octave-kai/gnulib-hg: lib/regexec.c annotate

annotate lib/regexec.c @ 6173:0728607db20f

* lib/regexec.c (re_search_internal): Simplify update of rm_so and rm_eo by replacing "if (A == B) A += C - B;" with the equivalent of "if (A == B) A = C;". This will make the code more reliable once we port to 64-bit hosts. * config/srclist.txt: Add glibc bug 1279.

author	Paul Eggert <eggert@cs.ucla.edu>
date	Wed, 31 Aug 2005 19:55:29 +0000
parents	5862ee08bfc1
children	6039b763ad3c

rev	line source
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1 /* Extended regular expression matching and search library.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2 Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3 This file is part of the GNU C Library.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	5
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	6 This program is free software; you can redistribute it and/or modify
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	7 it under the terms of the GNU General Public License as published by
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	8 the Free Software Foundation; either version 2, or (at your option)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	9 any later version.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	10
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	11 This program is distributed in the hope that it will be useful,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	12 but WITHOUT ANY WARRANTY; without even the implied warranty of
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	14 GNU General Public License for more details.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	15
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	16 You should have received a copy of the GNU General Public License along
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	17 with this program; if not, write to the Free Software Foundation,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	18 Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	19
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	20 static reg_errcode_t match_ctx_init (re_match_context_t *cache, int eflags,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	21 int n) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	22 static void match_ctx_clean (re_match_context_t *mctx) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	23 static void match_ctx_free (re_match_context_t *cache) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	24 static reg_errcode_t match_ctx_add_entry (re_match_context_t *cache, int node,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	25 int str_idx, int from, int to)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	26 internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	27 static int search_cur_bkref_entry (re_match_context_t *mctx, int str_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	28 internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	29 static reg_errcode_t match_ctx_add_subtop (re_match_context_t *mctx, int node,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	30 int str_idx) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	31 static re_sub_match_last_t * match_ctx_add_sublast (re_sub_match_top_t *subtop,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	32 int node, int str_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	33 internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	34 static void sift_ctx_init (re_sift_context_t sctx, re_dfastate_t *sifted_sts,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	35 re_dfastate_t **limited_sts, int last_node,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	36 int last_str_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	37 internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	38 static reg_errcode_t re_search_internal (const regex_t *preg,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	39 const char *string, int length,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	40 int start, int range, int stop,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	41 size_t nmatch, regmatch_t pmatch[],
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	42 int eflags) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	43 static int re_search_2_stub (struct re_pattern_buffer *bufp,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	44 const char *string1, int length1,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	45 const char *string2, int length2,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	46 int start, int range, struct re_registers *regs,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	47 int stop, int ret_len) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	48 static int re_search_stub (struct re_pattern_buffer *bufp,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	49 const char *string, int length, int start,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	50 int range, int stop, struct re_registers *regs,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	51 int ret_len) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	52 static unsigned re_copy_regs (struct re_registers regs, regmatch_t pmatch,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	53 int nregs, int regs_allocated) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	54 static reg_errcode_t prune_impossible_nodes (re_match_context_t *mctx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	55 internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	56 static int check_matching (re_match_context_t *mctx, int fl_longest_match,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	57 int *p_match_first)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	58 internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	59 static int check_halt_state_context (const re_match_context_t *mctx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	60 const re_dfastate_t *state, int idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	61 internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	62 static void update_regs (re_dfa_t dfa, regmatch_t pmatch,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	63 regmatch_t *prev_idx_match, int cur_node,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	64 int cur_idx, int nmatch) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	65 static reg_errcode_t push_fail_stack (struct re_fail_stack_t *fs,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	66 int str_idx, int dest_node, int nregs,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	67 regmatch_t *regs,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	68 re_node_set *eps_via_nodes) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	69 static reg_errcode_t set_regs (const regex_t *preg,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	70 const re_match_context_t *mctx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	71 size_t nmatch, regmatch_t *pmatch,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	72 int fl_backtrack) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	73 static reg_errcode_t free_fail_stack_return (struct re_fail_stack_t *fs) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	74
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	75 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	76 static int sift_states_iter_mb (const re_match_context_t *mctx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	77 re_sift_context_t *sctx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	78 int node_idx, int str_idx, int max_str_idx) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	79 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	80 static reg_errcode_t sift_states_backward (re_match_context_t *mctx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	81 re_sift_context_t *sctx) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	82 static reg_errcode_t build_sifted_states (re_match_context_t *mctx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	83 re_sift_context_t *sctx, int str_idx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	84 re_node_set *cur_dest) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	85 static reg_errcode_t update_cur_sifted_state (re_match_context_t *mctx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	86 re_sift_context_t *sctx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	87 int str_idx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	88 re_node_set *dest_nodes) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	89 static reg_errcode_t add_epsilon_src_nodes (re_dfa_t *dfa,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	90 re_node_set *dest_nodes,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	91 const re_node_set *candidates) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	92 static int check_dst_limits (re_match_context_t mctx, re_node_set limits,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	93 int dst_node, int dst_idx, int src_node,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	94 int src_idx) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	95 static int check_dst_limits_calc_pos_1 (re_match_context_t *mctx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	96 int boundaries, int subexp_idx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	97 int from_node, int bkref_idx) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	98 static int check_dst_limits_calc_pos (re_match_context_t *mctx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	99 int limit, int subexp_idx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	100 int node, int str_idx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	101 int bkref_idx) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	102 static reg_errcode_t check_subexp_limits (re_dfa_t *dfa,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	103 re_node_set *dest_nodes,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	104 const re_node_set *candidates,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	105 re_node_set *limits,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	106 struct re_backref_cache_entry *bkref_ents,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	107 int str_idx) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	108 static reg_errcode_t sift_states_bkref (re_match_context_t *mctx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	109 re_sift_context_t *sctx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	110 int str_idx, const re_node_set *candidates) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	111 static reg_errcode_t merge_state_array (re_dfa_t dfa, re_dfastate_t *dst,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	112 re_dfastate_t **src, int num) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	113 static re_dfastate_t find_recover_state (reg_errcode_t err,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	114 re_match_context_t *mctx) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	115 static re_dfastate_t transit_state (reg_errcode_t err,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	116 re_match_context_t *mctx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	117 re_dfastate_t *state) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	118 static re_dfastate_t merge_state_with_log (reg_errcode_t err,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	119 re_match_context_t *mctx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	120 re_dfastate_t *next_state) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	121 static reg_errcode_t check_subexp_matching_top (re_match_context_t *mctx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	122 re_node_set *cur_nodes,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	123 int str_idx) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	124 #if 0
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	125 static re_dfastate_t transit_state_sb (reg_errcode_t err,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	126 re_match_context_t *mctx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	127 re_dfastate_t *pstate) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	128 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	129 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	130 static reg_errcode_t transit_state_mb (re_match_context_t *mctx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	131 re_dfastate_t *pstate) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	132 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	133 static reg_errcode_t transit_state_bkref (re_match_context_t *mctx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	134 const re_node_set *nodes) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	135 static reg_errcode_t get_subexp (re_match_context_t *mctx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	136 int bkref_node, int bkref_str_idx) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	137 static reg_errcode_t get_subexp_sub (re_match_context_t *mctx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	138 const re_sub_match_top_t *sub_top,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	139 re_sub_match_last_t *sub_last,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	140 int bkref_node, int bkref_str) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	141 static int find_subexp_node (const re_dfa_t dfa, const re_node_set nodes,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	142 int subexp_idx, int type) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	143 static reg_errcode_t check_arrival (re_match_context_t *mctx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	144 state_array_t *path, int top_node,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	145 int top_str, int last_node, int last_str,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	146 int type) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	147 static reg_errcode_t check_arrival_add_next_nodes (re_match_context_t *mctx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	148 int str_idx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	149 re_node_set *cur_nodes,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	150 re_node_set *next_nodes) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	151 static reg_errcode_t check_arrival_expand_ecl (re_dfa_t *dfa,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	152 re_node_set *cur_nodes,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	153 int ex_subexp, int type) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	154 static reg_errcode_t check_arrival_expand_ecl_sub (re_dfa_t *dfa,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	155 re_node_set *dst_nodes,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	156 int target, int ex_subexp,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	157 int type) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	158 static reg_errcode_t expand_bkref_cache (re_match_context_t *mctx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	159 re_node_set *cur_nodes, int cur_str,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	160 int subexp_num, int type) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	161 static int build_trtable (re_dfa_t *dfa,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	162 re_dfastate_t *state) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	163 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	164 static int check_node_accept_bytes (re_dfa_t *dfa, int node_idx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	165 const re_string_t *input, int idx) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	166 # ifdef _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	167 static unsigned int find_collation_sequence_value (const unsigned char *mbs,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	168 size_t name_len) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	169 # endif /* _LIBC */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	170 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	171 static int group_nodes_into_DFAstates (re_dfa_t *dfa,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	172 const re_dfastate_t *state,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	173 re_node_set *states_node,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	174 bitset *states_ch) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	175 static int check_node_accept (const re_match_context_t *mctx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	176 const re_token_t *node, int idx) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	177 static reg_errcode_t extend_buffers (re_match_context_t *mctx) internal_function;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	178
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	179 /* Entry point for POSIX code. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	180
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	181 /* regexec searches for a given pattern, specified by PREG, in the
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	182 string STRING.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	183
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	184 If NMATCH is zero or REG_NOSUB was set in the cflags argument to
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	185 `regcomp', we ignore PMATCH. Otherwise, we assume PMATCH has at
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	186 least NMATCH elements, and we set them to the offsets of the
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	187 corresponding matched substrings.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	188
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	189 EFLAGS specifies `execution flags' which affect matching: if
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	190 REG_NOTBOL is set, then ^ does not match at the beginning of the
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	191 string; if REG_NOTEOL is set, then $ does not match at the end.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	192
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	193 We return 0 if we find a match and REG_NOMATCH if not. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	194
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	195 int
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	196 regexec (const regex_t __restrict preg, const char __restrict string,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	197 size_t nmatch, regmatch_t pmatch[], int eflags)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	198 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	199 reg_errcode_t err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	200 int start, length;
6079 221ad521f976 * config/srclist.txt: Add glibc bug 1225. Paul Eggert <eggert@cs.ucla.edu> parents: 6076 diff changeset	201 #ifdef _LIBC
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	202 re_dfa_t dfa = (re_dfa_t ) preg->re_buffer;
6079 221ad521f976 * config/srclist.txt: Add glibc bug 1225. Paul Eggert <eggert@cs.ucla.edu> parents: 6076 diff changeset	203 #endif
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	204
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	205 if (eflags & ~(REG_NOTBOL \| REG_NOTEOL \| REG_STARTEND))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	206 return REG_BADPAT;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	207
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	208 if (eflags & REG_STARTEND)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	209 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	210 start = pmatch[0].rm_so;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	211 length = pmatch[0].rm_eo;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	212 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	213 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	214 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	215 start = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	216 length = strlen (string);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	217 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	218
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	219 __libc_lock_lock (dfa->lock);
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	220 if (preg->re_no_sub)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	221 err = re_search_internal (preg, string, length, start, length - start,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	222 length, 0, NULL, eflags);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	223 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	224 err = re_search_internal (preg, string, length, start, length - start,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	225 length, nmatch, pmatch, eflags);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	226 __libc_lock_unlock (dfa->lock);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	227 return err != REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	228 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	229
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	230 #ifdef _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	231 # include <shlib-compat.h>
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	232 versioned_symbol (libc, __regexec, regexec, GLIBC_2_3_4);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	233
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	234 # if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3_4)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	235 __typeof__ (__regexec) __compat_regexec;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	236
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	237 int
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	238 attribute_compat_text_section
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	239 __compat_regexec (const regex_t *__restrict preg,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	240 const char *__restrict string, size_t nmatch,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	241 regmatch_t pmatch[], int eflags)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	242 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	243 return regexec (preg, string, nmatch, pmatch,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	244 eflags & (REG_NOTBOL \| REG_NOTEOL));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	245 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	246 compat_symbol (libc, __compat_regexec, regexec, GLIBC_2_0);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	247 # endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	248 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	249
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	250 /* Entry points for GNU code. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	251
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	252 /* re_match, re_search, re_match_2, re_search_2
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	253
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	254 The former two functions operate on STRING with length LENGTH,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	255 while the later two operate on concatenation of STRING1 and STRING2
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	256 with lengths LENGTH1 and LENGTH2, respectively.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	257
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	258 re_match() matches the compiled pattern in BUFP against the string,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	259 starting at index START.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	260
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	261 re_search() first tries matching at index START, then it tries to match
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	262 starting from index START + 1, and so on. The last start position tried
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	263 is START + RANGE. (Thus RANGE = 0 forces re_search to operate the same
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	264 way as re_match().)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	265
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	266 The parameter STOP of re_{match,search}_2 specifies that no match exceeding
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	267 the first STOP characters of the concatenation of the strings should be
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	268 concerned.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	269
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	270 If REGS is not NULL, and BUFP->re_no_sub is not set, the offsets of the match
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	271 and all groups is stroed in REGS. (For the "_2" variants, the offsets are
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	272 computed relative to the concatenation, not relative to the individual
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	273 strings.)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	274
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	275 On success, re_match* functions return the length of the match, re_search*
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	276 return the position of the start of the match. Return value -1 means no
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	277 match was found and -2 indicates an internal error. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	278
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	279 int
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	280 re_match (struct re_pattern_buffer bufp, const char string,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	281 int length, int start, struct re_registers *regs)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	282 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	283 return re_search_stub (bufp, string, length, start, 0, length, regs, 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	284 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	285 #ifdef _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	286 weak_alias (__re_match, re_match)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	287 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	288
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	289 int
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	290 re_search (struct re_pattern_buffer bufp, const char string,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	291 int length, int start, int range, struct re_registers *regs)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	292 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	293 return re_search_stub (bufp, string, length, start, range, length, regs, 0);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	294 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	295 #ifdef _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	296 weak_alias (__re_search, re_search)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	297 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	298
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	299 int
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	300 re_match_2 (struct re_pattern_buffer *bufp,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	301 const char *string1, int length1,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	302 const char *string2, int length2,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	303 int start, struct re_registers *regs, int stop)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	304 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	305 return re_search_2_stub (bufp, string1, length1, string2, length2,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	306 start, 0, regs, stop, 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	307 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	308 #ifdef _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	309 weak_alias (__re_match_2, re_match_2)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	310 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	311
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	312 int
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	313 re_search_2 (struct re_pattern_buffer *bufp,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	314 const char *string1, int length1,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	315 const char *string2, int length2,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	316 int start, int range, struct re_registers *regs, int stop)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	317 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	318 return re_search_2_stub (bufp, string1, length1, string2, length2,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	319 start, range, regs, stop, 0);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	320 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	321 #ifdef _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	322 weak_alias (__re_search_2, re_search_2)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	323 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	324
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	325 static int
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	326 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	327 re_search_2_stub (struct re_pattern_buffer *bufp,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	328 const char *string1, int length1,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	329 const char *string2, int length2,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	330 int start, int range, struct re_registers *regs, int stop,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	331 int ret_len)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	332 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	333 const char *str;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	334 int rval;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	335 int len = length1 + length2;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	336 int free_str = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	337
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	338 if (BE (length1 < 0 \|\| length2 < 0 \|\| stop < 0, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	339 return -2;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	340
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	341 /* Concatenate the strings. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	342 if (length2 > 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	343 if (length1 > 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	344 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	345 char *s = re_malloc (char, len);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	346
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	347 if (BE (s == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	348 return -2;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	349 memcpy (s, string1, length1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	350 memcpy (s + length1, string2, length2);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	351 str = s;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	352 free_str = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	353 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	354 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	355 str = string2;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	356 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	357 str = string1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	358
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	359 rval = re_search_stub (bufp, str, len, start, range, stop, regs,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	360 ret_len);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	361 if (free_str)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	362 re_free ((char *) str);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	363 return rval;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	364 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	365
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	366 /* The parameters have the same meaning as those of re_search.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	367 Additional parameters:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	368 If RET_LEN is nonzero the length of the match is returned (re_match style);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	369 otherwise the position of the match is returned. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	370
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	371 static int
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	372 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	373 re_search_stub (struct re_pattern_buffer *bufp,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	374 const char *string, int length,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	375 int start, int range, int stop, struct re_registers *regs,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	376 int ret_len)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	377 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	378 reg_errcode_t result;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	379 regmatch_t *pmatch;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	380 int nregs, rval;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	381 int eflags = 0;
6079 221ad521f976 * config/srclist.txt: Add glibc bug 1225. Paul Eggert <eggert@cs.ucla.edu> parents: 6076 diff changeset	382 #ifdef _LIBC
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	383 re_dfa_t dfa = (re_dfa_t ) bufp->re_buffer;
6079 221ad521f976 * config/srclist.txt: Add glibc bug 1225. Paul Eggert <eggert@cs.ucla.edu> parents: 6076 diff changeset	384 #endif
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	385
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	386 /* Check for out-of-range. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	387 if (BE (start < 0 \|\| start > length, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	388 return -1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	389 if (BE (start + range > length, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	390 range = length - start;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	391 else if (BE (start + range < 0, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	392 range = -start;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	393
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	394 __libc_lock_lock (dfa->lock);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	395
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	396 eflags \|= (bufp->re_not_bol) ? REG_NOTBOL : 0;
c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	397 eflags \|= (bufp->re_not_eol) ? REG_NOTEOL : 0;
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	398
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	399 /* Compile fastmap if we haven't yet. */
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	400 if (range > 0 && bufp->re_fastmap != NULL && !bufp->re_fastmap_accurate)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	401 re_compile_fastmap (bufp);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	402
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	403 if (BE (bufp->re_no_sub, 0))
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	404 regs = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	405
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	406 /* We need at least 1 register. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	407 if (regs == NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	408 nregs = 1;
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	409 else if (BE (bufp->re_regs_allocated == REG_FIXED
c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	410 && regs->rm_num_regs < bufp->re_nsub + 1, 0))
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	411 {
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	412 nregs = regs->rm_num_regs;
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	413 if (BE (nregs < 1, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	414 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	415 /* Nothing can be copied to regs. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	416 regs = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	417 nregs = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	418 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	419 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	420 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	421 nregs = bufp->re_nsub + 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	422 pmatch = re_malloc (regmatch_t, nregs);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	423 if (BE (pmatch == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	424 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	425 rval = -2;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	426 goto out;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	427 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	428
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	429 result = re_search_internal (bufp, string, length, start, range, stop,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	430 nregs, pmatch, eflags);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	431
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	432 rval = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	433
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	434 /* I hope we needn't fill ther regs with -1's when no match was found. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	435 if (result != REG_NOERROR)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	436 rval = -1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	437 else if (regs != NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	438 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	439 /* If caller wants register contents data back, copy them. */
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	440 bufp->re_regs_allocated = re_copy_regs (regs, pmatch, nregs,
c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	441 bufp->re_regs_allocated);
c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	442 if (BE (bufp->re_regs_allocated == REG_UNALLOCATED, 0))
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	443 rval = -2;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	444 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	445
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	446 if (BE (rval == 0, 1))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	447 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	448 if (ret_len)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	449 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	450 assert (pmatch[0].rm_so == start);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	451 rval = pmatch[0].rm_eo - start;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	452 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	453 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	454 rval = pmatch[0].rm_so;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	455 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	456 re_free (pmatch);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	457 out:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	458 __libc_lock_unlock (dfa->lock);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	459 return rval;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	460 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	461
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	462 static unsigned
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	463 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	464 re_copy_regs (struct re_registers regs, regmatch_t pmatch, int nregs,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	465 int regs_allocated)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	466 {
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	467 int rval = REG_REALLOCATE;
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	468 int i;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	469 int need_regs = nregs + 1;
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	470 /* We need one extra element beyond `rm_num_regs' for the `-1' marker GNU code
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	471 uses. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	472
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	473 /* Have the register data arrays been allocated? */
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	474 if (regs_allocated == REG_UNALLOCATED)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	475 { /* No. So allocate them with malloc. */
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	476 regs->rm_start = re_malloc (regoff_t, need_regs);
c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	477 regs->rm_end = re_malloc (regoff_t, need_regs);
c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	478 if (BE (regs->rm_start == NULL, 0) \|\| BE (regs->rm_end == NULL, 0))
c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	479 return REG_UNALLOCATED;
c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	480 regs->rm_num_regs = need_regs;
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	481 }
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	482 else if (regs_allocated == REG_REALLOCATE)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	483 { /* Yes. If we need more elements than were already
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	484 allocated, reallocate them. If we need fewer, just
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	485 leave it alone. */
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	486 if (BE (need_regs > regs->rm_num_regs, 0))
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	487 {
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	488 regoff_t *new_start =
c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	489 re_realloc (regs->rm_start, regoff_t, need_regs);
c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	490 regoff_t *new_end = re_realloc (regs->rm_end, regoff_t, need_regs);
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	491 if (BE (new_start == NULL, 0) \|\| BE (new_end == NULL, 0))
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	492 return REG_UNALLOCATED;
c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	493 regs->rm_start = new_start;
c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	494 regs->rm_end = new_end;
c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	495 regs->rm_num_regs = need_regs;
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	496 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	497 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	498 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	499 {
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	500 assert (regs_allocated == REG_FIXED);
c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	501 /* This function may not be called with REG_FIXED and nregs too big. */
c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	502 assert (regs->rm_num_regs >= nregs);
c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	503 rval = REG_FIXED;
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	504 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	505
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	506 /* Copy the regs. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	507 for (i = 0; i < nregs; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	508 {
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	509 regs->rm_start[i] = pmatch[i].rm_so;
c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	510 regs->rm_end[i] = pmatch[i].rm_eo;
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	511 }
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	512 for ( ; i < regs->rm_num_regs; ++i)
c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	513 regs->rm_start[i] = regs->rm_end[i] = -1;
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	514
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	515 return rval;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	516 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	517
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	518 /* Set REGS to hold NUM_REGS registers, storing them in STARTS and
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	519 ENDS. Subsequent matches using PATTERN_BUFFER and REGS will use
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	520 this memory for recording register information. STARTS and ENDS
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	521 must be allocated using the malloc library routine, and must each
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	522 be at least NUM_REGS * sizeof (regoff_t) bytes long.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	523
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	524 If NUM_REGS == 0, then subsequent matches should allocate their own
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	525 register data.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	526
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	527 Unless this function is called, the first search or match using
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	528 PATTERN_BUFFER will allocate its own register data, without
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	529 freeing the old data. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	530
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	531 void
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	532 re_set_registers (struct re_pattern_buffer bufp, struct re_registers regs,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	533 unsigned int num_regs, regoff_t starts, regoff_t ends)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	534 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	535 if (num_regs)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	536 {
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	537 bufp->re_regs_allocated = REG_REALLOCATE;
c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	538 regs->rm_num_regs = num_regs;
c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	539 regs->rm_start = starts;
c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	540 regs->rm_end = ends;
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	541 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	542 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	543 {
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	544 bufp->re_regs_allocated = REG_UNALLOCATED;
c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	545 regs->rm_num_regs = 0;
c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	546 regs->rm_start = regs->rm_end = NULL;
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	547 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	548 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	549 #ifdef _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	550 weak_alias (__re_set_registers, re_set_registers)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	551 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	552
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	553 /* Entry points compatible with 4.2 BSD regex library. We don't define
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	554 them unless specifically requested. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	555
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	556 #if defined _REGEX_RE_COMP \|\| defined _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	557 int
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	558 # ifdef _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	559 weak_function
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	560 # endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	561 re_exec (s)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	562 const char *s;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	563 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	564 return 0 == regexec (&re_comp_buf, s, 0, NULL, 0);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	565 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	566 #endif /* _REGEX_RE_COMP */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	567
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	568 /* Internal entry point. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	569
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	570 /* Searches for a compiled pattern PREG in the string STRING, whose
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	571 length is LENGTH. NMATCH, PMATCH, and EFLAGS have the same
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	572 mingings with regexec. START, and RANGE have the same meanings
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	573 with re_search.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	574 Return REG_NOERROR if we find a match, and REG_NOMATCH if not,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	575 otherwise return the error code.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	576 Note: We assume front end functions already check ranges.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	577 (START + RANGE >= 0 && START + RANGE <= LENGTH) */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	578
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	579 static reg_errcode_t
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	580 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	581 re_search_internal (const regex_t *preg,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	582 const char *string, int length,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	583 int start, int range, int stop,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	584 size_t nmatch, regmatch_t pmatch[],
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	585 int eflags)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	586 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	587 reg_errcode_t err;
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	588 re_dfa_t dfa = (re_dfa_t ) preg->re_buffer;
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	589 int left_lim, right_lim, incr;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	590 int fl_longest_match, match_first, match_kind, match_last = -1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	591 int extra_nmatch;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	592 int sb, ch;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	593 #if defined _LIBC \|\| (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	594 re_match_context_t mctx = { .dfa = dfa };
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	595 #else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	596 re_match_context_t mctx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	597 #endif
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	598 char *fastmap = (preg->re_fastmap != NULL && preg->re_fastmap_accurate
c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	599 && range && !preg->re_can_be_null) ? preg->re_fastmap : NULL;
c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	600 unsigned REG_TRANSLATE_TYPE t =
c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	601 (unsigned REG_TRANSLATE_TYPE) preg->re_translate;
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	602
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	603 #if !(defined _LIBC \|\| (defined __STDC_VERSION__ && __STDC_VERSION__ >= 199901L))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	604 memset (&mctx, '\0', sizeof (re_match_context_t));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	605 mctx.dfa = dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	606 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	607
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	608 extra_nmatch = (nmatch > preg->re_nsub) ? nmatch - (preg->re_nsub + 1) : 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	609 nmatch -= extra_nmatch;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	610
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	611 /* Check if the DFA haven't been compiled. */
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	612 if (BE (preg->re_used == 0 \|\| dfa->init_state == NULL
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	613 \|\| dfa->init_state_word == NULL \|\| dfa->init_state_nl == NULL
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	614 \|\| dfa->init_state_begbuf == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	615 return REG_NOMATCH;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	616
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	617 #ifdef DEBUG
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	618 /* We assume front-end functions already check them. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	619 assert (start + range >= 0 && start + range <= length);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	620 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	621
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	622 /* If initial states with non-begbuf contexts have no elements,
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	623 the regex must be anchored. If preg->re_newline_anchor is set,
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	624 we'll never use init_state_nl, so do not check it. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	625 if (dfa->init_state->nodes.nelem == 0
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	626 && dfa->init_state_word->nodes.nelem == 0
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	627 && (dfa->init_state_nl->nodes.nelem == 0
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	628 \|\| !preg->re_newline_anchor))
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	629 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	630 if (start != 0 && start + range != 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	631 return REG_NOMATCH;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	632 start = range = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	633 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	634
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	635 /* We must check the longest matching, if nmatch > 0. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	636 fl_longest_match = (nmatch != 0 \|\| dfa->nbackref);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	637
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	638 err = re_string_allocate (&mctx.input, string, length, dfa->nodes_len + 1,
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	639 preg->re_translate,
c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	640 preg->re_syntax & REG_IGNORE_CASE, dfa);
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	641 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	642 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	643 mctx.input.stop = stop;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	644 mctx.input.raw_stop = stop;
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	645 mctx.input.newline_anchor = preg->re_newline_anchor;
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	646
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	647 err = match_ctx_init (&mctx, eflags, dfa->nbackref * 2);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	648 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	649 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	650
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	651 /* We will log all the DFA states through which the dfa pass,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	652 if nmatch > 1, or this dfa has "multibyte node", which is a
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	653 back-reference or a node which can accept multibyte character or
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	654 multi character collating element. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	655 if (nmatch > 1 \|\| dfa->has_mb_node)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	656 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	657 mctx.state_log = re_malloc (re_dfastate_t *, mctx.input.bufs_len + 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	658 if (BE (mctx.state_log == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	659 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	660 err = REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	661 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	662 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	663 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	664 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	665 mctx.state_log = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	666
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	667 match_first = start;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	668 mctx.input.tip_context = (eflags & REG_NOTBOL) ? CONTEXT_BEGBUF
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	669 : CONTEXT_NEWLINE \| CONTEXT_BEGBUF;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	670
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	671 /* Check incrementally whether of not the input string match. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	672 incr = (range < 0) ? -1 : 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	673 left_lim = (range < 0) ? start + range : start;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	674 right_lim = (range < 0) ? start : start + range;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	675 sb = dfa->mb_cur_max == 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	676 match_kind =
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	677 (fastmap
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	678 ? ((sb \|\| !(preg->re_syntax & REG_IGNORE_CASE \|\| t) ? 4 : 0)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	679 \| (range >= 0 ? 2 : 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	680 \| (t != NULL ? 1 : 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	681 : 8);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	682
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	683 for (;; match_first += incr)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	684 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	685 err = REG_NOMATCH;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	686 if (match_first < left_lim \|\| right_lim < match_first)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	687 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	688
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	689 /* Advance as rapidly as possible through the string, until we
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	690 find a plausible place to start matching. This may be done
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	691 with varying efficiency, so there are various possibilities:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	692 only the most common of them are specialized, in order to
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	693 save on code size. We use a switch statement for speed. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	694 switch (match_kind)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	695 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	696 case 8:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	697 /* No fastmap. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	698 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	699
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	700 case 7:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	701 /* Fastmap with single-byte translation, match forward. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	702 while (BE (match_first < right_lim, 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	703 && !fastmap[t[(unsigned char) string[match_first]]])
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	704 ++match_first;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	705 goto forward_match_found_start_or_reached_end;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	706
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	707 case 6:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	708 /* Fastmap without translation, match forward. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	709 while (BE (match_first < right_lim, 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	710 && !fastmap[(unsigned char) string[match_first]])
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	711 ++match_first;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	712
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	713 forward_match_found_start_or_reached_end:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	714 if (BE (match_first == right_lim, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	715 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	716 ch = match_first >= length
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	717 ? 0 : (unsigned char) string[match_first];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	718 if (!fastmap[t ? t[ch] : ch])
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	719 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	720 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	721 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	722
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	723 case 4:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	724 case 5:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	725 /* Fastmap without multi-byte translation, match backwards. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	726 while (match_first >= left_lim)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	727 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	728 ch = match_first >= length
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	729 ? 0 : (unsigned char) string[match_first];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	730 if (fastmap[t ? t[ch] : ch])
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	731 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	732 --match_first;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	733 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	734 if (match_first < left_lim)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	735 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	736 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	737
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	738 default:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	739 /* In this case, we can't determine easily the current byte,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	740 since it might be a component byte of a multibyte
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	741 character. Then we use the constructed buffer instead. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	742 for (;;)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	743 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	744 /* If MATCH_FIRST is out of the valid range, reconstruct the
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	745 buffers. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	746 unsigned int offset = match_first - mctx.input.raw_mbs_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	747 if (BE (offset >= (unsigned int) mctx.input.valid_raw_len, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	748 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	749 err = re_string_reconstruct (&mctx.input, match_first,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	750 eflags);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	751 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	752 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	753
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	754 offset = match_first - mctx.input.raw_mbs_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	755 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	756 /* If MATCH_FIRST is out of the buffer, leave it as '\0'.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	757 Note that MATCH_FIRST must not be smaller than 0. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	758 ch = (match_first >= length
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	759 ? 0 : re_string_byte_at (&mctx.input, offset));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	760 if (fastmap[ch])
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	761 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	762 match_first += incr;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	763 if (match_first < left_lim \|\| match_first > right_lim)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	764 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	765 err = REG_NOMATCH;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	766 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	767 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	768 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	769 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	770 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	771
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	772 /* Reconstruct the buffers so that the matcher can assume that
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	773 the matching starts from the beginning of the buffer. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	774 err = re_string_reconstruct (&mctx.input, match_first, eflags);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	775 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	776 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	777
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	778 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	779 /* Don't consider this char as a possible match start if it part,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	780 yet isn't the head, of a multibyte character. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	781 if (!sb && !re_string_first_byte (&mctx.input, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	782 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	783 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	784
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	785 /* It seems to be appropriate one, then use the matcher. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	786 /* We assume that the matching starts from 0. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	787 mctx.state_log_top = mctx.nbkref_ents = mctx.max_mb_elem_len = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	788 match_last = check_matching (&mctx, fl_longest_match,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	789 range >= 0 ? &match_first : NULL);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	790 if (match_last != -1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	791 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	792 if (BE (match_last == -2, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	793 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	794 err = REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	795 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	796 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	797 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	798 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	799 mctx.match_last = match_last;
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	800 if ((!preg->re_no_sub && nmatch > 1) \|\| dfa->nbackref)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	801 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	802 re_dfastate_t *pstate = mctx.state_log[match_last];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	803 mctx.last_node = check_halt_state_context (&mctx, pstate,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	804 match_last);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	805 }
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	806 if ((!preg->re_no_sub && nmatch > 1 && dfa->has_plural_match)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	807 \|\| dfa->nbackref)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	808 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	809 err = prune_impossible_nodes (&mctx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	810 if (err == REG_NOERROR)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	811 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	812 if (BE (err != REG_NOMATCH, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	813 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	814 match_last = -1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	815 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	816 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	817 break; /* We found a match. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	818 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	819 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	820
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	821 match_ctx_clean (&mctx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	822 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	823
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	824 #ifdef DEBUG
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	825 assert (match_last != -1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	826 assert (err == REG_NOERROR);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	827 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	828
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	829 /* Set pmatch[] if we need. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	830 if (nmatch > 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	831 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	832 int reg_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	833
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	834 /* Initialize registers. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	835 for (reg_idx = 1; reg_idx < nmatch; ++reg_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	836 pmatch[reg_idx].rm_so = pmatch[reg_idx].rm_eo = -1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	837
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	838 /* Set the points where matching start/end. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	839 pmatch[0].rm_so = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	840 pmatch[0].rm_eo = mctx.match_last;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	841
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	842 if (!preg->re_no_sub && nmatch > 1)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	843 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	844 err = set_regs (preg, &mctx, nmatch, pmatch,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	845 dfa->has_plural_match && dfa->nbackref > 0);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	846 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	847 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	848 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	849
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	850 /* At last, add the offset to the each registers, since we slided
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	851 the buffers so that we could assume that the matching starts
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	852 from 0. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	853 for (reg_idx = 0; reg_idx < nmatch; ++reg_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	854 if (pmatch[reg_idx].rm_so != -1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	855 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	856 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	857 if (BE (mctx.input.offsets_needed != 0, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	858 {
6173 0728607db20f * lib/regexec.c (re_search_internal): Simplify update of Paul Eggert <eggert@cs.ucla.edu> parents: 6171 diff changeset	859 pmatch[reg_idx].rm_so =
0728607db20f * lib/regexec.c (re_search_internal): Simplify update of Paul Eggert <eggert@cs.ucla.edu> parents: 6171 diff changeset	860 (pmatch[reg_idx].rm_so == mctx.input.valid_len
0728607db20f * lib/regexec.c (re_search_internal): Simplify update of Paul Eggert <eggert@cs.ucla.edu> parents: 6171 diff changeset	861 ? mctx.input.valid_raw_len
0728607db20f * lib/regexec.c (re_search_internal): Simplify update of Paul Eggert <eggert@cs.ucla.edu> parents: 6171 diff changeset	862 : mctx.input.offsets[pmatch[reg_idx].rm_so]);
0728607db20f * lib/regexec.c (re_search_internal): Simplify update of Paul Eggert <eggert@cs.ucla.edu> parents: 6171 diff changeset	863 pmatch[reg_idx].rm_eo =
0728607db20f * lib/regexec.c (re_search_internal): Simplify update of Paul Eggert <eggert@cs.ucla.edu> parents: 6171 diff changeset	864 (pmatch[reg_idx].rm_eo == mctx.input.valid_len
0728607db20f * lib/regexec.c (re_search_internal): Simplify update of Paul Eggert <eggert@cs.ucla.edu> parents: 6171 diff changeset	865 ? mctx.input.valid_raw_len
0728607db20f * lib/regexec.c (re_search_internal): Simplify update of Paul Eggert <eggert@cs.ucla.edu> parents: 6171 diff changeset	866 : mctx.input.offsets[pmatch[reg_idx].rm_eo]);
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	867 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	868 #else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	869 assert (mctx.input.offsets_needed == 0);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	870 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	871 pmatch[reg_idx].rm_so += match_first;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	872 pmatch[reg_idx].rm_eo += match_first;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	873 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	874 for (reg_idx = 0; reg_idx < extra_nmatch; ++reg_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	875 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	876 pmatch[nmatch + reg_idx].rm_so = -1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	877 pmatch[nmatch + reg_idx].rm_eo = -1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	878 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	879
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	880 if (dfa->subexp_map)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	881 for (reg_idx = 0; reg_idx + 1 < nmatch; reg_idx++)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	882 if (dfa->subexp_map[reg_idx] != reg_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	883 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	884 pmatch[reg_idx + 1].rm_so
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	885 = pmatch[dfa->subexp_map[reg_idx] + 1].rm_so;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	886 pmatch[reg_idx + 1].rm_eo
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	887 = pmatch[dfa->subexp_map[reg_idx] + 1].rm_eo;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	888 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	889 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	890
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	891 free_return:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	892 re_free (mctx.state_log);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	893 if (dfa->nbackref)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	894 match_ctx_free (&mctx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	895 re_string_destruct (&mctx.input);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	896 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	897 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	898
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	899 static reg_errcode_t
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	900 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	901 prune_impossible_nodes (re_match_context_t *mctx)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	902 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	903 re_dfa_t *const dfa = mctx->dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	904 int halt_node, match_last;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	905 reg_errcode_t ret;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	906 re_dfastate_t **sifted_states;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	907 re_dfastate_t **lim_states = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	908 re_sift_context_t sctx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	909 #ifdef DEBUG
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	910 assert (mctx->state_log != NULL);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	911 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	912 match_last = mctx->match_last;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	913 halt_node = mctx->last_node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	914 sifted_states = re_malloc (re_dfastate_t *, match_last + 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	915 if (BE (sifted_states == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	916 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	917 ret = REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	918 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	919 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	920 if (dfa->nbackref)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	921 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	922 lim_states = re_malloc (re_dfastate_t *, match_last + 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	923 if (BE (lim_states == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	924 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	925 ret = REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	926 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	927 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	928 while (1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	929 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	930 memset (lim_states, '\0',
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	931 sizeof (re_dfastate_t ) (match_last + 1));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	932 sift_ctx_init (&sctx, sifted_states, lim_states, halt_node,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	933 match_last);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	934 ret = sift_states_backward (mctx, &sctx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	935 re_node_set_free (&sctx.limits);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	936 if (BE (ret != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	937 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	938 if (sifted_states[0] != NULL \|\| lim_states[0] != NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	939 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	940 do
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	941 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	942 --match_last;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	943 if (match_last < 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	944 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	945 ret = REG_NOMATCH;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	946 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	947 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	948 } while (mctx->state_log[match_last] == NULL
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	949 \|\| !mctx->state_log[match_last]->halt);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	950 halt_node = check_halt_state_context (mctx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	951 mctx->state_log[match_last],
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	952 match_last);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	953 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	954 ret = merge_state_array (dfa, sifted_states, lim_states,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	955 match_last + 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	956 re_free (lim_states);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	957 lim_states = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	958 if (BE (ret != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	959 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	960 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	961 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	962 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	963 sift_ctx_init (&sctx, sifted_states, lim_states, halt_node, match_last);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	964 ret = sift_states_backward (mctx, &sctx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	965 re_node_set_free (&sctx.limits);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	966 if (BE (ret != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	967 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	968 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	969 re_free (mctx->state_log);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	970 mctx->state_log = sifted_states;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	971 sifted_states = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	972 mctx->last_node = halt_node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	973 mctx->match_last = match_last;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	974 ret = REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	975 free_return:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	976 re_free (sifted_states);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	977 re_free (lim_states);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	978 return ret;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	979 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	980
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	981 /* Acquire an initial state and return it.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	982 We must select appropriate initial state depending on the context,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	983 since initial states may have constraints like "\<", "^", etc.. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	984
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	985 static inline re_dfastate_t *
6084 87075d885cc5 * config/srclist.txt: Add glibc bug 1231. Paul Eggert <eggert@cs.ucla.edu> parents: 6082 diff changeset	986 __attribute ((always_inline)) internal_function
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	987 acquire_init_state_context (reg_errcode_t err, const re_match_context_t mctx,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	988 int idx)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	989 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	990 re_dfa_t *const dfa = mctx->dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	991 if (dfa->init_state->has_constraint)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	992 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	993 unsigned int context;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	994 context = re_string_context_at (&mctx->input, idx - 1, mctx->eflags);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	995 if (IS_WORD_CONTEXT (context))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	996 return dfa->init_state_word;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	997 else if (IS_ORDINARY_CONTEXT (context))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	998 return dfa->init_state;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	999 else if (IS_BEGBUF_CONTEXT (context) && IS_NEWLINE_CONTEXT (context))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1000 return dfa->init_state_begbuf;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1001 else if (IS_NEWLINE_CONTEXT (context))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1002 return dfa->init_state_nl;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1003 else if (IS_BEGBUF_CONTEXT (context))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1004 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1005 /* It is relatively rare case, then calculate on demand. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1006 return re_acquire_state_context (err, dfa,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1007 dfa->init_state->entrance_nodes,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1008 context);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1009 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1010 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1011 /* Must not happen? */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1012 return dfa->init_state;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1013 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1014 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1015 return dfa->init_state;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1016 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1017
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1018 /* Check whether the regular expression match input string INPUT or not,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1019 and return the index where the matching end, return -1 if not match,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1020 or return -2 in case of an error.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1021 FL_LONGEST_MATCH means we want the POSIX longest matching.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1022 If P_MATCH_FIRST is not NULL, and the match fails, it is set to the
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1023 next place where we may want to try matching.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1024 Note that the matcher assume that the maching starts from the current
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1025 index of the buffer. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1026
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1027 static int
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1028 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1029 check_matching (re_match_context_t *mctx, int fl_longest_match,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1030 int *p_match_first)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1031 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1032 re_dfa_t *const dfa = mctx->dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1033 reg_errcode_t err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1034 int match = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1035 int match_last = -1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1036 int cur_str_idx = re_string_cur_idx (&mctx->input);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1037 re_dfastate_t *cur_state;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1038 int at_init_state = p_match_first != NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1039 int next_start_idx = cur_str_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1040
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1041 err = REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1042 cur_state = acquire_init_state_context (&err, mctx, cur_str_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1043 /* An initial state must not be NULL (invalid). */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1044 if (BE (cur_state == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1045 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1046 assert (err == REG_ESPACE);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1047 return -2;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1048 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1049
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1050 if (mctx->state_log != NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1051 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1052 mctx->state_log[cur_str_idx] = cur_state;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1053
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1054 /* Check OP_OPEN_SUBEXP in the initial state in case that we use them
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1055 later. E.g. Processing back references. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1056 if (BE (dfa->nbackref, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1057 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1058 at_init_state = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1059 err = check_subexp_matching_top (mctx, &cur_state->nodes, 0);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1060 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1061 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1062
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1063 if (cur_state->has_backref)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1064 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1065 err = transit_state_bkref (mctx, &cur_state->nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1066 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1067 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1068 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1069 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1070 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1071
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1072 /* If the RE accepts NULL string. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1073 if (BE (cur_state->halt, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1074 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1075 if (!cur_state->has_constraint
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1076 \|\| check_halt_state_context (mctx, cur_state, cur_str_idx))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1077 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1078 if (!fl_longest_match)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1079 return cur_str_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1080 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1081 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1082 match_last = cur_str_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1083 match = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1084 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1085 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1086 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1087
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1088 while (!re_string_eoi (&mctx->input))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1089 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1090 re_dfastate_t *old_state = cur_state;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1091 int next_char_idx = re_string_cur_idx (&mctx->input) + 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1092
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1093 if (BE (next_char_idx >= mctx->input.bufs_len, 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1094 \|\| (BE (next_char_idx >= mctx->input.valid_len, 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1095 && mctx->input.valid_len < mctx->input.len))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1096 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1097 err = extend_buffers (mctx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1098 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1099 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1100 assert (err == REG_ESPACE);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1101 return -2;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1102 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1103 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1104
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1105 cur_state = transit_state (&err, mctx, cur_state);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1106 if (mctx->state_log != NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1107 cur_state = merge_state_with_log (&err, mctx, cur_state);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1108
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1109 if (cur_state == NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1110 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1111 /* Reached the invalid state or an error. Try to recover a valid
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1112 state using the state log, if available and if we have not
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1113 already found a valid (even if not the longest) match. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1114 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1115 return -2;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1116
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1117 if (mctx->state_log == NULL
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1118 \|\| (match && !fl_longest_match)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1119 \|\| (cur_state = find_recover_state (&err, mctx)) == NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1120 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1121 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1122
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1123 if (BE (at_init_state, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1124 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1125 if (old_state == cur_state)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1126 next_start_idx = next_char_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1127 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1128 at_init_state = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1129 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1130
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1131 if (cur_state->halt)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1132 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1133 /* Reached a halt state.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1134 Check the halt state can satisfy the current context. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1135 if (!cur_state->has_constraint
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1136 \|\| check_halt_state_context (mctx, cur_state,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1137 re_string_cur_idx (&mctx->input)))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1138 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1139 /* We found an appropriate halt state. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1140 match_last = re_string_cur_idx (&mctx->input);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1141 match = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1142
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1143 /* We found a match, do not modify match_first below. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1144 p_match_first = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1145 if (!fl_longest_match)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1146 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1147 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1148 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1149 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1150
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1151 if (p_match_first)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1152 *p_match_first += next_start_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1153
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1154 return match_last;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1155 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1156
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1157 /* Check NODE match the current context. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1158
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1159 static int
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1160 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1161 check_halt_node_context (const re_dfa_t *dfa, int node, unsigned int context)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1162 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1163 re_token_type_t type = dfa->nodes[node].type;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1164 unsigned int constraint = dfa->nodes[node].constraint;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1165 if (type != END_OF_RE)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1166 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1167 if (!constraint)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1168 return 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1169 if (NOT_SATISFY_NEXT_CONSTRAINT (constraint, context))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1170 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1171 return 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1172 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1173
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1174 /* Check the halt state STATE match the current context.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1175 Return 0 if not match, if the node, STATE has, is a halt node and
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1176 match the context, return the node. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1177
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1178 static int
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1179 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1180 check_halt_state_context (const re_match_context_t *mctx,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1181 const re_dfastate_t *state, int idx)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1182 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1183 int i;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1184 unsigned int context;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1185 #ifdef DEBUG
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1186 assert (state->halt);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1187 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1188 context = re_string_context_at (&mctx->input, idx, mctx->eflags);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1189 for (i = 0; i < state->nodes.nelem; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1190 if (check_halt_node_context (mctx->dfa, state->nodes.elems[i], context))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1191 return state->nodes.elems[i];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1192 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1193 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1194
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1195 /* Compute the next node to which "NFA" transit from NODE("NFA" is a NFA
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1196 corresponding to the DFA).
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1197 Return the destination node, and update EPS_VIA_NODES, return -1 in case
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1198 of errors. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1199
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1200 static int
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1201 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1202 proceed_next_node (const re_match_context_t *mctx,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1203 int nregs, regmatch_t regs, int pidx, int node,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1204 re_node_set eps_via_nodes, struct re_fail_stack_t fs)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1205 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1206 re_dfa_t *const dfa = mctx->dfa;
6069 b3ee77788435 (proceed_next_node): Redo local variables to avoid GCC shadowing warnings. Paul Eggert <eggert@cs.ucla.edu> parents: 5968 diff changeset	1207 int i, err;
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1208 if (IS_EPSILON_NODE (dfa->nodes[node].type))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1209 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1210 re_node_set cur_nodes = &mctx->state_log[pidx]->nodes;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1211 re_node_set *edests = &dfa->edests[node];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1212 int dest_node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1213 err = re_node_set_insert (eps_via_nodes, node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1214 if (BE (err < 0, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1215 return -2;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1216 /* Pick up a valid destination, or return -1 if none is found. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1217 for (dest_node = -1, i = 0; i < edests->nelem; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1218 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1219 int candidate = edests->elems[i];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1220 if (!re_node_set_contains (cur_nodes, candidate))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1221 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1222 if (dest_node == -1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1223 dest_node = candidate;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1224
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1225 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1226 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1227 /* In order to avoid infinite loop like "(a)", return the second
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1228 epsilon-transition if the first was already considered. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1229 if (re_node_set_contains (eps_via_nodes, dest_node))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1230 return candidate;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1231
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1232 /* Otherwise, push the second epsilon-transition on the fail stack. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1233 else if (fs != NULL
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1234 && push_fail_stack (fs, *pidx, candidate, nregs, regs,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1235 eps_via_nodes))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1236 return -2;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1237
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1238 /* We know we are going to exit. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1239 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1240 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1241 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1242 return dest_node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1243 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1244 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1245 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1246 int naccepted = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1247 re_token_type_t type = dfa->nodes[node].type;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1248
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1249 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1250 if (dfa->nodes[node].accept_mb)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1251 naccepted = check_node_accept_bytes (dfa, node, &mctx->input, *pidx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1252 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1253 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1254 if (type == OP_BACK_REF)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1255 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1256 int subexp_idx = dfa->nodes[node].opr.idx + 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1257 naccepted = regs[subexp_idx].rm_eo - regs[subexp_idx].rm_so;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1258 if (fs != NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1259 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1260 if (regs[subexp_idx].rm_so == -1 \|\| regs[subexp_idx].rm_eo == -1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1261 return -1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1262 else if (naccepted)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1263 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1264 char buf = (char ) re_string_get_buffer (&mctx->input);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1265 if (memcmp (buf + regs[subexp_idx].rm_so, buf + *pidx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1266 naccepted) != 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1267 return -1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1268 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1269 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1270
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1271 if (naccepted == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1272 {
6069 b3ee77788435 (proceed_next_node): Redo local variables to avoid GCC shadowing warnings. Paul Eggert <eggert@cs.ucla.edu> parents: 5968 diff changeset	1273 int dest_node;
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1274 err = re_node_set_insert (eps_via_nodes, node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1275 if (BE (err < 0, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1276 return -2;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1277 dest_node = dfa->edests[node].elems[0];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1278 if (re_node_set_contains (&mctx->state_log[*pidx]->nodes,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1279 dest_node))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1280 return dest_node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1281 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1282 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1283
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1284 if (naccepted != 0
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1285 \|\| check_node_accept (mctx, dfa->nodes + node, *pidx))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1286 {
6069 b3ee77788435 (proceed_next_node): Redo local variables to avoid GCC shadowing warnings. Paul Eggert <eggert@cs.ucla.edu> parents: 5968 diff changeset	1287 int dest_node = dfa->nexts[node];
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1288 pidx = (naccepted == 0) ? pidx + 1 : *pidx + naccepted;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1289 if (fs && (pidx > mctx->match_last \|\| mctx->state_log[pidx] == NULL
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1290 \|\| !re_node_set_contains (&mctx->state_log[*pidx]->nodes,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1291 dest_node)))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1292 return -1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1293 re_node_set_empty (eps_via_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1294 return dest_node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1295 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1296 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1297 return -1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1298 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1299
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1300 static reg_errcode_t
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1301 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1302 push_fail_stack (struct re_fail_stack_t *fs, int str_idx, int dest_node,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1303 int nregs, regmatch_t regs, re_node_set eps_via_nodes)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1304 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1305 reg_errcode_t err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1306 int num = fs->num++;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1307 if (fs->num == fs->alloc)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1308 {
6119 c3bf2ea44695 Make regex safe for g++. This fixes one real bug (an "err" Paul Eggert <eggert@cs.ucla.edu> parents: 6101 diff changeset	1309 struct re_fail_stack_ent_t *new_array =
c3bf2ea44695 Make regex safe for g++. This fixes one real bug (an "err" Paul Eggert <eggert@cs.ucla.edu> parents: 6101 diff changeset	1310 re_realloc (fs->stack, struct re_fail_stack_ent_t, fs->alloc * 2);
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1311 if (new_array == NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1312 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1313 fs->alloc *= 2;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1314 fs->stack = new_array;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1315 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1316 fs->stack[num].idx = str_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1317 fs->stack[num].node = dest_node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1318 fs->stack[num].regs = re_malloc (regmatch_t, nregs);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1319 if (fs->stack[num].regs == NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1320 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1321 memcpy (fs->stack[num].regs, regs, sizeof (regmatch_t) * nregs);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1322 err = re_node_set_init_copy (&fs->stack[num].eps_via_nodes, eps_via_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1323 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1324 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1325
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1326 static int
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1327 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1328 pop_fail_stack (struct re_fail_stack_t fs, int pidx,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1329 int nregs, regmatch_t regs, re_node_set eps_via_nodes)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1330 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1331 int num = --fs->num;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1332 assert (num >= 0);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1333 *pidx = fs->stack[num].idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1334 memcpy (regs, fs->stack[num].regs, sizeof (regmatch_t) * nregs);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1335 re_node_set_free (eps_via_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1336 re_free (fs->stack[num].regs);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1337 *eps_via_nodes = fs->stack[num].eps_via_nodes;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1338 return fs->stack[num].node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1339 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1340
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1341 /* Set the positions where the subexpressions are starts/ends to registers
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1342 PMATCH.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1343 Note: We assume that pmatch[0] is already set, and
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1344 pmatch[i].rm_so == pmatch[i].rm_eo == -1 for 0 < i < nmatch. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1345
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1346 static reg_errcode_t
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1347 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1348 set_regs (const regex_t preg, const re_match_context_t mctx,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1349 size_t nmatch, regmatch_t *pmatch, int fl_backtrack)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1350 {
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	1351 re_dfa_t dfa = (re_dfa_t ) preg->re_buffer;
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1352 int idx, cur_node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1353 re_node_set eps_via_nodes;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1354 struct re_fail_stack_t *fs;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1355 struct re_fail_stack_t fs_body = { 0, 2, NULL };
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1356 regmatch_t *prev_idx_match;
6125 4af02335816a * config/srclist.txt: Add glibc bug 1245. Paul Eggert <eggert@cs.ucla.edu> parents: 6119 diff changeset	1357 int prev_idx_match_malloced = 0;
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1358
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1359 #ifdef DEBUG
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1360 assert (nmatch > 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1361 assert (mctx->state_log != NULL);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1362 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1363 if (fl_backtrack)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1364 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1365 fs = &fs_body;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1366 fs->stack = re_malloc (struct re_fail_stack_ent_t, fs->alloc);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1367 if (fs->stack == NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1368 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1369 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1370 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1371 fs = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1372
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1373 cur_node = dfa->init_node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1374 re_node_set_init_empty (&eps_via_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1375
6125 4af02335816a * config/srclist.txt: Add glibc bug 1245. Paul Eggert <eggert@cs.ucla.edu> parents: 6119 diff changeset	1376 if (__libc_use_alloca (nmatch * sizeof (regmatch_t)))
4af02335816a * config/srclist.txt: Add glibc bug 1245. Paul Eggert <eggert@cs.ucla.edu> parents: 6119 diff changeset	1377 prev_idx_match = (regmatch_t ) alloca (nmatch sizeof (regmatch_t));
4af02335816a * config/srclist.txt: Add glibc bug 1245. Paul Eggert <eggert@cs.ucla.edu> parents: 6119 diff changeset	1378 else
4af02335816a * config/srclist.txt: Add glibc bug 1245. Paul Eggert <eggert@cs.ucla.edu> parents: 6119 diff changeset	1379 {
4af02335816a * config/srclist.txt: Add glibc bug 1245. Paul Eggert <eggert@cs.ucla.edu> parents: 6119 diff changeset	1380 prev_idx_match = re_malloc (regmatch_t, nmatch);
4af02335816a * config/srclist.txt: Add glibc bug 1245. Paul Eggert <eggert@cs.ucla.edu> parents: 6119 diff changeset	1381 if (prev_idx_match == NULL)
4af02335816a * config/srclist.txt: Add glibc bug 1245. Paul Eggert <eggert@cs.ucla.edu> parents: 6119 diff changeset	1382 {
4af02335816a * config/srclist.txt: Add glibc bug 1245. Paul Eggert <eggert@cs.ucla.edu> parents: 6119 diff changeset	1383 free_fail_stack_return (fs);
4af02335816a * config/srclist.txt: Add glibc bug 1245. Paul Eggert <eggert@cs.ucla.edu> parents: 6119 diff changeset	1384 return REG_ESPACE;
4af02335816a * config/srclist.txt: Add glibc bug 1245. Paul Eggert <eggert@cs.ucla.edu> parents: 6119 diff changeset	1385 }
4af02335816a * config/srclist.txt: Add glibc bug 1245. Paul Eggert <eggert@cs.ucla.edu> parents: 6119 diff changeset	1386 prev_idx_match_malloced = 1;
4af02335816a * config/srclist.txt: Add glibc bug 1245. Paul Eggert <eggert@cs.ucla.edu> parents: 6119 diff changeset	1387 }
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1388 memcpy (prev_idx_match, pmatch, sizeof (regmatch_t) * nmatch);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1389
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1390 for (idx = pmatch[0].rm_so; idx <= pmatch[0].rm_eo ;)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1391 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1392 update_regs (dfa, pmatch, prev_idx_match, cur_node, idx, nmatch);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1393
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1394 if (idx == pmatch[0].rm_eo && cur_node == mctx->last_node)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1395 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1396 int reg_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1397 if (fs)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1398 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1399 for (reg_idx = 0; reg_idx < nmatch; ++reg_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1400 if (pmatch[reg_idx].rm_so > -1 && pmatch[reg_idx].rm_eo == -1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1401 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1402 if (reg_idx == nmatch)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1403 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1404 re_node_set_free (&eps_via_nodes);
6125 4af02335816a * config/srclist.txt: Add glibc bug 1245. Paul Eggert <eggert@cs.ucla.edu> parents: 6119 diff changeset	1405 if (prev_idx_match_malloced)
4af02335816a * config/srclist.txt: Add glibc bug 1245. Paul Eggert <eggert@cs.ucla.edu> parents: 6119 diff changeset	1406 re_free (prev_idx_match);
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1407 return free_fail_stack_return (fs);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1408 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1409 cur_node = pop_fail_stack (fs, &idx, nmatch, pmatch,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1410 &eps_via_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1411 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1412 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1413 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1414 re_node_set_free (&eps_via_nodes);
6125 4af02335816a * config/srclist.txt: Add glibc bug 1245. Paul Eggert <eggert@cs.ucla.edu> parents: 6119 diff changeset	1415 if (prev_idx_match_malloced)
4af02335816a * config/srclist.txt: Add glibc bug 1245. Paul Eggert <eggert@cs.ucla.edu> parents: 6119 diff changeset	1416 re_free (prev_idx_match);
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1417 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1418 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1419 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1420
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1421 /* Proceed to next node. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1422 cur_node = proceed_next_node (mctx, nmatch, pmatch, &idx, cur_node,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1423 &eps_via_nodes, fs);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1424
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1425 if (BE (cur_node < 0, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1426 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1427 if (BE (cur_node == -2, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1428 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1429 re_node_set_free (&eps_via_nodes);
6125 4af02335816a * config/srclist.txt: Add glibc bug 1245. Paul Eggert <eggert@cs.ucla.edu> parents: 6119 diff changeset	1430 if (prev_idx_match_malloced)
4af02335816a * config/srclist.txt: Add glibc bug 1245. Paul Eggert <eggert@cs.ucla.edu> parents: 6119 diff changeset	1431 re_free (prev_idx_match);
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1432 free_fail_stack_return (fs);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1433 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1434 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1435 if (fs)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1436 cur_node = pop_fail_stack (fs, &idx, nmatch, pmatch,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1437 &eps_via_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1438 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1439 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1440 re_node_set_free (&eps_via_nodes);
6125 4af02335816a * config/srclist.txt: Add glibc bug 1245. Paul Eggert <eggert@cs.ucla.edu> parents: 6119 diff changeset	1441 if (prev_idx_match_malloced)
4af02335816a * config/srclist.txt: Add glibc bug 1245. Paul Eggert <eggert@cs.ucla.edu> parents: 6119 diff changeset	1442 re_free (prev_idx_match);
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1443 return REG_NOMATCH;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1444 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1445 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1446 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1447 re_node_set_free (&eps_via_nodes);
6125 4af02335816a * config/srclist.txt: Add glibc bug 1245. Paul Eggert <eggert@cs.ucla.edu> parents: 6119 diff changeset	1448 if (prev_idx_match_malloced)
4af02335816a * config/srclist.txt: Add glibc bug 1245. Paul Eggert <eggert@cs.ucla.edu> parents: 6119 diff changeset	1449 re_free (prev_idx_match);
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1450 return free_fail_stack_return (fs);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1451 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1452
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1453 static reg_errcode_t
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1454 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1455 free_fail_stack_return (struct re_fail_stack_t *fs)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1456 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1457 if (fs)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1458 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1459 int fs_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1460 for (fs_idx = 0; fs_idx < fs->num; ++fs_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1461 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1462 re_node_set_free (&fs->stack[fs_idx].eps_via_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1463 re_free (fs->stack[fs_idx].regs);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1464 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1465 re_free (fs->stack);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1466 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1467 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1468 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1469
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1470 static void
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1471 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1472 update_regs (re_dfa_t dfa, regmatch_t pmatch, regmatch_t *prev_idx_match,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1473 int cur_node, int cur_idx, int nmatch)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1474 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1475 int type = dfa->nodes[cur_node].type;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1476 if (type == OP_OPEN_SUBEXP)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1477 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1478 int reg_num = dfa->nodes[cur_node].opr.idx + 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1479
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1480 /* We are at the first node of this sub expression. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1481 if (reg_num < nmatch)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1482 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1483 pmatch[reg_num].rm_so = cur_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1484 pmatch[reg_num].rm_eo = -1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1485 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1486 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1487 else if (type == OP_CLOSE_SUBEXP)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1488 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1489 int reg_num = dfa->nodes[cur_node].opr.idx + 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1490 if (reg_num < nmatch)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1491 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1492 /* We are at the last node of this sub expression. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1493 if (pmatch[reg_num].rm_so < cur_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1494 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1495 pmatch[reg_num].rm_eo = cur_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1496 /* This is a non-empty match or we are not inside an optional
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1497 subexpression. Accept this right away. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1498 memcpy (prev_idx_match, pmatch, sizeof (regmatch_t) * nmatch);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1499 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1500 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1501 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1502 if (dfa->nodes[cur_node].opt_subexp
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1503 && prev_idx_match[reg_num].rm_so != -1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1504 /* We transited through an empty match for an optional
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1505 subexpression, like (a?)*, and this is not the subexp's
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1506 first match. Copy back the old content of the registers
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1507 so that matches of an inner subexpression are undone as
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1508 well, like in ((a?)). /
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1509 memcpy (pmatch, prev_idx_match, sizeof (regmatch_t) * nmatch);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1510 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1511 /* We completed a subexpression, but it may be part of
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1512 an optional one, so do not update PREV_IDX_MATCH. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1513 pmatch[reg_num].rm_eo = cur_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1514 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1515 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1516 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1517 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1518
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1519 /* This function checks the STATE_LOG from the SCTX->last_str_idx to 0
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1520 and sift the nodes in each states according to the following rules.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1521 Updated state_log will be wrote to STATE_LOG.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1522
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1523 Rules: We throw away the Node `a' in the STATE_LOG[STR_IDX] if...
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1524 1. When STR_IDX == MATCH_LAST(the last index in the state_log):
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1525 If `a' isn't the LAST_NODE and `a' can't epsilon transit to
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1526 the LAST_NODE, we throw away the node `a'.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1527 2. When 0 <= STR_IDX < MATCH_LAST and `a' accepts
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1528 string `s' and transit to `b':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1529 i. If 'b' isn't in the STATE_LOG[STR_IDX+strlen('s')], we throw
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1530 away the node `a'.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1531 ii. If 'b' is in the STATE_LOG[STR_IDX+strlen('s')] but 'b' is
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1532 thrown away, we throw away the node `a'.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1533 3. When 0 <= STR_IDX < MATCH_LAST and 'a' epsilon transit to 'b':
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1534 i. If 'b' isn't in the STATE_LOG[STR_IDX], we throw away the
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1535 node `a'.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1536 ii. If 'b' is in the STATE_LOG[STR_IDX] but 'b' is thrown away,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1537 we throw away the node `a'. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1538
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1539 #define STATE_NODE_CONTAINS(state,node) \
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1540 ((state) != NULL && re_node_set_contains (&(state)->nodes, node))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1541
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1542 static reg_errcode_t
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1543 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1544 sift_states_backward (re_match_context_t mctx, re_sift_context_t sctx)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1545 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1546 reg_errcode_t err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1547 int null_cnt = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1548 int str_idx = sctx->last_str_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1549 re_node_set cur_dest;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1550
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1551 #ifdef DEBUG
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1552 assert (mctx->state_log != NULL && mctx->state_log[str_idx] != NULL);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1553 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1554
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1555 /* Build sifted state_log[str_idx]. It has the nodes which can epsilon
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1556 transit to the last_node and the last_node itself. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1557 err = re_node_set_init_1 (&cur_dest, sctx->last_node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1558 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1559 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1560 err = update_cur_sifted_state (mctx, sctx, str_idx, &cur_dest);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1561 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1562 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1563
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1564 /* Then check each states in the state_log. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1565 while (str_idx > 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1566 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1567 /* Update counters. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1568 null_cnt = (sctx->sifted_states[str_idx] == NULL) ? null_cnt + 1 : 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1569 if (null_cnt > mctx->max_mb_elem_len)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1570 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1571 memset (sctx->sifted_states, '\0',
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1572 sizeof (re_dfastate_t ) str_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1573 re_node_set_free (&cur_dest);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1574 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1575 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1576 re_node_set_empty (&cur_dest);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1577 --str_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1578
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1579 if (mctx->state_log[str_idx])
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1580 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1581 err = build_sifted_states (mctx, sctx, str_idx, &cur_dest);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1582 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1583 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1584 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1585
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1586 /* Add all the nodes which satisfy the following conditions:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1587 - It can epsilon transit to a node in CUR_DEST.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1588 - It is in CUR_SRC.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1589 And update state_log. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1590 err = update_cur_sifted_state (mctx, sctx, str_idx, &cur_dest);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1591 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1592 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1593 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1594 err = REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1595 free_return:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1596 re_node_set_free (&cur_dest);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1597 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1598 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1599
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1600 static reg_errcode_t
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1601 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1602 build_sifted_states (re_match_context_t mctx, re_sift_context_t sctx,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1603 int str_idx, re_node_set *cur_dest)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1604 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1605 re_dfa_t *const dfa = mctx->dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1606 re_node_set *cur_src = &mctx->state_log[str_idx]->non_eps_nodes;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1607 int i;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1608
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1609 /* Then build the next sifted state.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1610 We build the next sifted state on `cur_dest', and update
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1611 `sifted_states[str_idx]' with `cur_dest'.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1612 Note:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1613 `cur_dest' is the sifted state from `state_log[str_idx + 1]'.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1614 `cur_src' points the node_set of the old `state_log[str_idx]'
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1615 (with the epsilon nodes pre-filtered out). */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1616 for (i = 0; i < cur_src->nelem; i++)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1617 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1618 int prev_node = cur_src->elems[i];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1619 int naccepted = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1620 int ret;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1621
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1622 #ifdef DEBUG
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1623 re_token_type_t type = dfa->nodes[prev_node].type;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1624 assert (!IS_EPSILON_NODE (type));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1625 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1626 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1627 /* If the node may accept `multi byte'. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1628 if (dfa->nodes[prev_node].accept_mb)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1629 naccepted = sift_states_iter_mb (mctx, sctx, prev_node,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1630 str_idx, sctx->last_str_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1631 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1632
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1633 /* We don't check backreferences here.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1634 See update_cur_sifted_state(). */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1635 if (!naccepted
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1636 && check_node_accept (mctx, dfa->nodes + prev_node, str_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1637 && STATE_NODE_CONTAINS (sctx->sifted_states[str_idx + 1],
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1638 dfa->nexts[prev_node]))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1639 naccepted = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1640
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1641 if (naccepted == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1642 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1643
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1644 if (sctx->limits.nelem)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1645 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1646 int to_idx = str_idx + naccepted;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1647 if (check_dst_limits (mctx, &sctx->limits,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1648 dfa->nexts[prev_node], to_idx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1649 prev_node, str_idx))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1650 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1651 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1652 ret = re_node_set_insert (cur_dest, prev_node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1653 if (BE (ret == -1, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1654 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1655 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1656
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1657 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1658 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1659
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1660 /* Helper functions. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1661
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1662 static reg_errcode_t
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1663 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1664 clean_state_log_if_needed (re_match_context_t *mctx, int next_state_log_idx)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1665 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1666 int top = mctx->state_log_top;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1667
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1668 if (next_state_log_idx >= mctx->input.bufs_len
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1669 \|\| (next_state_log_idx >= mctx->input.valid_len
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1670 && mctx->input.valid_len < mctx->input.len))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1671 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1672 reg_errcode_t err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1673 err = extend_buffers (mctx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1674 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1675 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1676 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1677
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1678 if (top < next_state_log_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1679 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1680 memset (mctx->state_log + top + 1, '\0',
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1681 sizeof (re_dfastate_t ) (next_state_log_idx - top));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1682 mctx->state_log_top = next_state_log_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1683 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1684 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1685 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1686
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1687 static reg_errcode_t
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1688 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1689 merge_state_array (re_dfa_t dfa, re_dfastate_t dst, re_dfastate_t *src,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1690 int num)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1691 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1692 int st_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1693 reg_errcode_t err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1694 for (st_idx = 0; st_idx < num; ++st_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1695 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1696 if (dst[st_idx] == NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1697 dst[st_idx] = src[st_idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1698 else if (src[st_idx] != NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1699 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1700 re_node_set merged_set;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1701 err = re_node_set_init_union (&merged_set, &dst[st_idx]->nodes,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1702 &src[st_idx]->nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1703 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1704 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1705 dst[st_idx] = re_acquire_state (&err, dfa, &merged_set);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1706 re_node_set_free (&merged_set);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1707 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1708 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1709 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1710 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1711 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1712 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1713
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1714 static reg_errcode_t
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1715 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1716 update_cur_sifted_state (re_match_context_t mctx, re_sift_context_t sctx,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1717 int str_idx, re_node_set *dest_nodes)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1718 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1719 re_dfa_t *const dfa = mctx->dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1720 reg_errcode_t err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1721 const re_node_set *candidates;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1722 candidates = ((mctx->state_log[str_idx] == NULL) ? NULL
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1723 : &mctx->state_log[str_idx]->nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1724
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1725 if (dest_nodes->nelem == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1726 sctx->sifted_states[str_idx] = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1727 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1728 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1729 if (candidates)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1730 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1731 /* At first, add the nodes which can epsilon transit to a node in
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1732 DEST_NODE. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1733 err = add_epsilon_src_nodes (dfa, dest_nodes, candidates);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1734 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1735 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1736
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1737 /* Then, check the limitations in the current sift_context. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1738 if (sctx->limits.nelem)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1739 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1740 err = check_subexp_limits (dfa, dest_nodes, candidates, &sctx->limits,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1741 mctx->bkref_ents, str_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1742 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1743 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1744 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1745 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1746
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1747 sctx->sifted_states[str_idx] = re_acquire_state (&err, dfa, dest_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1748 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1749 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1750 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1751
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1752 if (candidates && mctx->state_log[str_idx]->has_backref)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1753 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1754 err = sift_states_bkref (mctx, sctx, str_idx, candidates);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1755 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1756 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1757 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1758 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1759 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1760
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1761 static reg_errcode_t
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1762 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1763 add_epsilon_src_nodes (re_dfa_t dfa, re_node_set dest_nodes,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1764 const re_node_set *candidates)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1765 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1766 reg_errcode_t err = REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1767 int i;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1768
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1769 re_dfastate_t *state = re_acquire_state (&err, dfa, dest_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1770 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1771 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1772
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1773 if (!state->inveclosure.alloc)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1774 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1775 err = re_node_set_alloc (&state->inveclosure, dest_nodes->nelem);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1776 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1777 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1778 for (i = 0; i < dest_nodes->nelem; i++)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1779 re_node_set_merge (&state->inveclosure,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1780 dfa->inveclosures + dest_nodes->elems[i]);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1781 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1782 return re_node_set_add_intersect (dest_nodes, candidates,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1783 &state->inveclosure);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1784 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1785
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1786 static reg_errcode_t
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1787 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1788 sub_epsilon_src_nodes (re_dfa_t dfa, int node, re_node_set dest_nodes,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1789 const re_node_set *candidates)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1790 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1791 int ecl_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1792 reg_errcode_t err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1793 re_node_set *inv_eclosure = dfa->inveclosures + node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1794 re_node_set except_nodes;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1795 re_node_set_init_empty (&except_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1796 for (ecl_idx = 0; ecl_idx < inv_eclosure->nelem; ++ecl_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1797 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1798 int cur_node = inv_eclosure->elems[ecl_idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1799 if (cur_node == node)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1800 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1801 if (IS_EPSILON_NODE (dfa->nodes[cur_node].type))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1802 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1803 int edst1 = dfa->edests[cur_node].elems[0];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1804 int edst2 = ((dfa->edests[cur_node].nelem > 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1805 ? dfa->edests[cur_node].elems[1] : -1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1806 if ((!re_node_set_contains (inv_eclosure, edst1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1807 && re_node_set_contains (dest_nodes, edst1))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1808 \|\| (edst2 > 0
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1809 && !re_node_set_contains (inv_eclosure, edst2)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1810 && re_node_set_contains (dest_nodes, edst2)))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1811 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1812 err = re_node_set_add_intersect (&except_nodes, candidates,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1813 dfa->inveclosures + cur_node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1814 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1815 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1816 re_node_set_free (&except_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1817 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1818 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1819 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1820 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1821 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1822 for (ecl_idx = 0; ecl_idx < inv_eclosure->nelem; ++ecl_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1823 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1824 int cur_node = inv_eclosure->elems[ecl_idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1825 if (!re_node_set_contains (&except_nodes, cur_node))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1826 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1827 int idx = re_node_set_contains (dest_nodes, cur_node) - 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1828 re_node_set_remove_at (dest_nodes, idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1829 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1830 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1831 re_node_set_free (&except_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1832 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1833 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1834
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1835 static int
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1836 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1837 check_dst_limits (re_match_context_t mctx, re_node_set limits,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1838 int dst_node, int dst_idx, int src_node, int src_idx)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1839 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1840 re_dfa_t *const dfa = mctx->dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1841 int lim_idx, src_pos, dst_pos;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1842
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1843 int dst_bkref_idx = search_cur_bkref_entry (mctx, dst_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1844 int src_bkref_idx = search_cur_bkref_entry (mctx, src_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1845 for (lim_idx = 0; lim_idx < limits->nelem; ++lim_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1846 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1847 int subexp_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1848 struct re_backref_cache_entry *ent;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1849 ent = mctx->bkref_ents + limits->elems[lim_idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1850 subexp_idx = dfa->nodes[ent->node].opr.idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1851
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1852 dst_pos = check_dst_limits_calc_pos (mctx, limits->elems[lim_idx],
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1853 subexp_idx, dst_node, dst_idx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1854 dst_bkref_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1855 src_pos = check_dst_limits_calc_pos (mctx, limits->elems[lim_idx],
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1856 subexp_idx, src_node, src_idx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1857 src_bkref_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1858
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1859 /* In case of:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1860 <src> <dst> ( <subexp> )
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1861 ( <subexp> ) <src> <dst>
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1862 ( <subexp1> <src> <subexp2> <dst> <subexp3> ) */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1863 if (src_pos == dst_pos)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1864 continue; /* This is unrelated limitation. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1865 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1866 return 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1867 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1868 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1869 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1870
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1871 static int
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1872 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1873 check_dst_limits_calc_pos_1 (re_match_context_t *mctx, int boundaries,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1874 int subexp_idx, int from_node, int bkref_idx)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1875 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1876 re_dfa_t *const dfa = mctx->dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1877 re_node_set *eclosures = dfa->eclosures + from_node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1878 int node_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1879
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1880 /* Else, we are on the boundary: examine the nodes on the epsilon
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1881 closure. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1882 for (node_idx = 0; node_idx < eclosures->nelem; ++node_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1883 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1884 int node = eclosures->elems[node_idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1885 switch (dfa->nodes[node].type)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1886 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1887 case OP_BACK_REF:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1888 if (bkref_idx != -1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1889 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1890 struct re_backref_cache_entry *ent = mctx->bkref_ents + bkref_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1891 do
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1892 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1893 int dst, cpos;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1894
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1895 if (ent->node != node)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1896 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1897
6171 5862ee08bfc1 * lib/regcomp.c (re_compile_fastmap_iter, init_dfa, init_word_char): Paul Eggert <eggert@cs.ucla.edu> parents: 6125 diff changeset	1898 if (subexp_idx
5862ee08bfc1 * lib/regcomp.c (re_compile_fastmap_iter, init_dfa, init_word_char): Paul Eggert <eggert@cs.ucla.edu> parents: 6125 diff changeset	1899 < CHAR_BIT * sizeof ent->eps_reachable_subexps_map
5862ee08bfc1 * lib/regcomp.c (re_compile_fastmap_iter, init_dfa, init_word_char): Paul Eggert <eggert@cs.ucla.edu> parents: 6125 diff changeset	1900 && !(ent->eps_reachable_subexps_map & (1u << subexp_idx)))
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1901 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1902
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1903 /* Recurse trying to reach the OP_OPEN_SUBEXP and
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1904 OP_CLOSE_SUBEXP cases below. But, if the
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1905 destination node is the same node as the source
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1906 node, don't recurse because it would cause an
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1907 infinite loop: a regex that exhibits this behavior
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1908 is ()\1\1 */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1909 dst = dfa->edests[node].elems[0];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1910 if (dst == from_node)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1911 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1912 if (boundaries & 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1913 return -1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1914 else /* if (boundaries & 2) */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1915 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1916 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1917
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1918 cpos =
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1919 check_dst_limits_calc_pos_1 (mctx, boundaries, subexp_idx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1920 dst, bkref_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1921 if (cpos == -1 /* && (boundaries & 1) */)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1922 return -1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1923 if (cpos == 0 && (boundaries & 2))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1924 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1925
6171 5862ee08bfc1 * lib/regcomp.c (re_compile_fastmap_iter, init_dfa, init_word_char): Paul Eggert <eggert@cs.ucla.edu> parents: 6125 diff changeset	1926 if (subexp_idx
5862ee08bfc1 * lib/regcomp.c (re_compile_fastmap_iter, init_dfa, init_word_char): Paul Eggert <eggert@cs.ucla.edu> parents: 6125 diff changeset	1927 < CHAR_BIT * sizeof ent->eps_reachable_subexps_map)
5862ee08bfc1 * lib/regcomp.c (re_compile_fastmap_iter, init_dfa, init_word_char): Paul Eggert <eggert@cs.ucla.edu> parents: 6125 diff changeset	1928 ent->eps_reachable_subexps_map &= ~(1u << subexp_idx);
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1929 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1930 while (ent++->more);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1931 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1932 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1933
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1934 case OP_OPEN_SUBEXP:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1935 if ((boundaries & 1) && subexp_idx == dfa->nodes[node].opr.idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1936 return -1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1937 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1938
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1939 case OP_CLOSE_SUBEXP:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1940 if ((boundaries & 2) && subexp_idx == dfa->nodes[node].opr.idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1941 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1942 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1943
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1944 default:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1945 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1946 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1947 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1948
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1949 return (boundaries & 2) ? 1 : 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1950 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1951
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1952 static int
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1953 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1954 check_dst_limits_calc_pos (re_match_context_t *mctx, int limit, int subexp_idx,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1955 int from_node, int str_idx, int bkref_idx)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1956 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1957 struct re_backref_cache_entry *lim = mctx->bkref_ents + limit;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1958 int boundaries;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1959
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1960 /* If we are outside the range of the subexpression, return -1 or 1. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1961 if (str_idx < lim->subexp_from)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1962 return -1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1963
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1964 if (lim->subexp_to < str_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1965 return 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1966
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1967 /* If we are within the subexpression, return 0. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1968 boundaries = (str_idx == lim->subexp_from);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1969 boundaries \|= (str_idx == lim->subexp_to) << 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1970 if (boundaries == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1971 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1972
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1973 /* Else, examine epsilon closure. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1974 return check_dst_limits_calc_pos_1 (mctx, boundaries, subexp_idx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1975 from_node, bkref_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1976 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1977
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1978 /* Check the limitations of sub expressions LIMITS, and remove the nodes
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1979 which are against limitations from DEST_NODES. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1980
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1981 static reg_errcode_t
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1982 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1983 check_subexp_limits (re_dfa_t dfa, re_node_set dest_nodes,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1984 const re_node_set candidates, re_node_set limits,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	1985 struct re_backref_cache_entry *bkref_ents, int str_idx)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1986 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1987 reg_errcode_t err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1988 int node_idx, lim_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1989
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1990 for (lim_idx = 0; lim_idx < limits->nelem; ++lim_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1991 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1992 int subexp_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1993 struct re_backref_cache_entry *ent;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1994 ent = bkref_ents + limits->elems[lim_idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1995
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1996 if (str_idx <= ent->subexp_from \|\| ent->str_idx < str_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1997 continue; /* This is unrelated limitation. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1998
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	1999 subexp_idx = dfa->nodes[ent->node].opr.idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2000 if (ent->subexp_to == str_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2001 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2002 int ops_node = -1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2003 int cls_node = -1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2004 for (node_idx = 0; node_idx < dest_nodes->nelem; ++node_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2005 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2006 int node = dest_nodes->elems[node_idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2007 re_token_type_t type = dfa->nodes[node].type;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2008 if (type == OP_OPEN_SUBEXP
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2009 && subexp_idx == dfa->nodes[node].opr.idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2010 ops_node = node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2011 else if (type == OP_CLOSE_SUBEXP
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2012 && subexp_idx == dfa->nodes[node].opr.idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2013 cls_node = node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2014 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2015
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2016 /* Check the limitation of the open subexpression. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2017 /* Note that (ent->subexp_to = str_idx != ent->subexp_from). */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2018 if (ops_node >= 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2019 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2020 err = sub_epsilon_src_nodes (dfa, ops_node, dest_nodes,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2021 candidates);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2022 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2023 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2024 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2025
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2026 /* Check the limitation of the close subexpression. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2027 if (cls_node >= 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2028 for (node_idx = 0; node_idx < dest_nodes->nelem; ++node_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2029 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2030 int node = dest_nodes->elems[node_idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2031 if (!re_node_set_contains (dfa->inveclosures + node,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2032 cls_node)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2033 && !re_node_set_contains (dfa->eclosures + node,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2034 cls_node))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2035 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2036 /* It is against this limitation.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2037 Remove it form the current sifted state. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2038 err = sub_epsilon_src_nodes (dfa, node, dest_nodes,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2039 candidates);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2040 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2041 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2042 --node_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2043 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2044 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2045 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2046 else /* (ent->subexp_to != str_idx) */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2047 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2048 for (node_idx = 0; node_idx < dest_nodes->nelem; ++node_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2049 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2050 int node = dest_nodes->elems[node_idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2051 re_token_type_t type = dfa->nodes[node].type;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2052 if (type == OP_CLOSE_SUBEXP \|\| type == OP_OPEN_SUBEXP)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2053 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2054 if (subexp_idx != dfa->nodes[node].opr.idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2055 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2056 /* It is against this limitation.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2057 Remove it form the current sifted state. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2058 err = sub_epsilon_src_nodes (dfa, node, dest_nodes,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2059 candidates);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2060 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2061 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2062 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2063 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2064 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2065 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2066 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2067 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2068
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2069 static reg_errcode_t
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2070 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2071 sift_states_bkref (re_match_context_t mctx, re_sift_context_t sctx,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2072 int str_idx, const re_node_set *candidates)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2073 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2074 re_dfa_t *const dfa = mctx->dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2075 reg_errcode_t err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2076 int node_idx, node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2077 re_sift_context_t local_sctx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2078 int first_idx = search_cur_bkref_entry (mctx, str_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2079
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2080 if (first_idx == -1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2081 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2082
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2083 local_sctx.sifted_states = NULL; /* Mark that it hasn't been initialized. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2084
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2085 for (node_idx = 0; node_idx < candidates->nelem; ++node_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2086 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2087 int enabled_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2088 re_token_type_t type;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2089 struct re_backref_cache_entry *entry;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2090 node = candidates->elems[node_idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2091 type = dfa->nodes[node].type;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2092 /* Avoid infinite loop for the REs like "()\1+". */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2093 if (node == sctx->last_node && str_idx == sctx->last_str_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2094 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2095 if (type != OP_BACK_REF)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2096 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2097
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2098 entry = mctx->bkref_ents + first_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2099 enabled_idx = first_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2100 do
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2101 {
6082 f7e7f62a1516 * config/srclist.txt: Add glibc bug 1227. Paul Eggert <eggert@cs.ucla.edu> parents: 6079 diff changeset	2102 int subexp_len, to_idx, dst_node, ret;
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2103 re_dfastate_t *cur_state;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2104
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2105 if (entry->node != node)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2106 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2107 subexp_len = entry->subexp_to - entry->subexp_from;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2108 to_idx = str_idx + subexp_len;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2109 dst_node = (subexp_len ? dfa->nexts[node]
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2110 : dfa->edests[node].elems[0]);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2111
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2112 if (to_idx > sctx->last_str_idx
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2113 \|\| sctx->sifted_states[to_idx] == NULL
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2114 \|\| !STATE_NODE_CONTAINS (sctx->sifted_states[to_idx], dst_node)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2115 \|\| check_dst_limits (mctx, &sctx->limits, node,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2116 str_idx, dst_node, to_idx))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2117 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2118
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2119 if (local_sctx.sifted_states == NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2120 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2121 local_sctx = *sctx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2122 err = re_node_set_init_copy (&local_sctx.limits, &sctx->limits);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2123 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2124 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2125 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2126 local_sctx.last_node = node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2127 local_sctx.last_str_idx = str_idx;
6082 f7e7f62a1516 * config/srclist.txt: Add glibc bug 1227. Paul Eggert <eggert@cs.ucla.edu> parents: 6079 diff changeset	2128 ret = re_node_set_insert (&local_sctx.limits, enabled_idx);
f7e7f62a1516 * config/srclist.txt: Add glibc bug 1227. Paul Eggert <eggert@cs.ucla.edu> parents: 6079 diff changeset	2129 if (BE (ret < 0, 0))
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2130 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2131 err = REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2132 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2133 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2134 cur_state = local_sctx.sifted_states[str_idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2135 err = sift_states_backward (mctx, &local_sctx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2136 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2137 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2138 if (sctx->limited_states != NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2139 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2140 err = merge_state_array (dfa, sctx->limited_states,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2141 local_sctx.sifted_states,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2142 str_idx + 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2143 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2144 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2145 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2146 local_sctx.sifted_states[str_idx] = cur_state;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2147 re_node_set_remove (&local_sctx.limits, enabled_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2148
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2149 /* mctx->bkref_ents may have changed, reload the pointer. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2150 entry = mctx->bkref_ents + enabled_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2151 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2152 while (enabled_idx++, entry++->more);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2153 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2154 err = REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2155 free_return:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2156 if (local_sctx.sifted_states != NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2157 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2158 re_node_set_free (&local_sctx.limits);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2159 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2160
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2161 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2162 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2163
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2164
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2165 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2166 static int
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2167 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2168 sift_states_iter_mb (const re_match_context_t mctx, re_sift_context_t sctx,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2169 int node_idx, int str_idx, int max_str_idx)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2170 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2171 re_dfa_t *const dfa = mctx->dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2172 int naccepted;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2173 /* Check the node can accept `multi byte'. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2174 naccepted = check_node_accept_bytes (dfa, node_idx, &mctx->input, str_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2175 if (naccepted > 0 && str_idx + naccepted <= max_str_idx &&
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2176 !STATE_NODE_CONTAINS (sctx->sifted_states[str_idx + naccepted],
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2177 dfa->nexts[node_idx]))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2178 /* The node can't accept the `multi byte', or the
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2179 destination was already thrown away, then the node
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2180 could't accept the current input `multi byte'. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2181 naccepted = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2182 /* Otherwise, it is sure that the node could accept
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2183 `naccepted' bytes input. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2184 return naccepted;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2185 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2186 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2187
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2188
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2189 /* Functions for state transition. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2190
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2191 /* Return the next state to which the current state STATE will transit by
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2192 accepting the current input byte, and update STATE_LOG if necessary.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2193 If STATE can accept a multibyte char/collating element/back reference
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2194 update the destination of STATE_LOG. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2195
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2196 static re_dfastate_t *
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2197 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2198 transit_state (reg_errcode_t err, re_match_context_t mctx,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2199 re_dfastate_t *state)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2200 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2201 re_dfastate_t **trtable;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2202 unsigned char ch;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2203
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2204 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2205 /* If the current state can accept multibyte. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2206 if (BE (state->accept_mb, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2207 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2208 *err = transit_state_mb (mctx, state);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2209 if (BE (*err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2210 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2211 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2212 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2213
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2214 /* Then decide the next state with the single byte. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2215 #if 0
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2216 if (0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2217 /* don't use transition table */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2218 return transit_state_sb (err, mctx, state);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2219 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2220
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2221 /* Use transition table */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2222 ch = re_string_fetch_byte (&mctx->input);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2223 for (;;)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2224 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2225 trtable = state->trtable;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2226 if (BE (trtable != NULL, 1))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2227 return trtable[ch];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2228
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2229 trtable = state->word_trtable;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2230 if (BE (trtable != NULL, 1))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2231 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2232 unsigned int context;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2233 context
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2234 = re_string_context_at (&mctx->input,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2235 re_string_cur_idx (&mctx->input) - 1,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2236 mctx->eflags);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2237 if (IS_WORD_CONTEXT (context))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2238 return trtable[ch + SBC_MAX];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2239 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2240 return trtable[ch];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2241 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2242
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2243 if (!build_trtable (mctx->dfa, state))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2244 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2245 *err = REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2246 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2247 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2248
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2249 /* Retry, we now have a transition table. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2250 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2251 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2252
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2253 /* Update the state_log if we need */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2254 re_dfastate_t *
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2255 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2256 merge_state_with_log (reg_errcode_t err, re_match_context_t mctx,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2257 re_dfastate_t *next_state)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2258 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2259 re_dfa_t *const dfa = mctx->dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2260 int cur_idx = re_string_cur_idx (&mctx->input);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2261
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2262 if (cur_idx > mctx->state_log_top)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2263 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2264 mctx->state_log[cur_idx] = next_state;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2265 mctx->state_log_top = cur_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2266 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2267 else if (mctx->state_log[cur_idx] == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2268 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2269 mctx->state_log[cur_idx] = next_state;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2270 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2271 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2272 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2273 re_dfastate_t *pstate;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2274 unsigned int context;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2275 re_node_set next_nodes, log_nodes, table_nodes = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2276 /* If (state_log[cur_idx] != 0), it implies that cur_idx is
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2277 the destination of a multibyte char/collating element/
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2278 back reference. Then the next state is the union set of
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2279 these destinations and the results of the transition table. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2280 pstate = mctx->state_log[cur_idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2281 log_nodes = pstate->entrance_nodes;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2282 if (next_state != NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2283 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2284 table_nodes = next_state->entrance_nodes;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2285 *err = re_node_set_init_union (&next_nodes, table_nodes,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2286 log_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2287 if (BE (*err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2288 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2289 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2290 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2291 next_nodes = *log_nodes;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2292 /* Note: We already add the nodes of the initial state,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2293 then we don't need to add them here. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2294
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2295 context = re_string_context_at (&mctx->input,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2296 re_string_cur_idx (&mctx->input) - 1,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2297 mctx->eflags);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2298 next_state = mctx->state_log[cur_idx]
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2299 = re_acquire_state_context (err, dfa, &next_nodes, context);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2300 /* We don't need to check errors here, since the return value of
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2301 this function is next_state and ERR is already set. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2302
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2303 if (table_nodes != NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2304 re_node_set_free (&next_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2305 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2306
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2307 if (BE (dfa->nbackref, 0) && next_state != NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2308 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2309 /* Check OP_OPEN_SUBEXP in the current state in case that we use them
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2310 later. We must check them here, since the back references in the
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2311 next state might use them. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2312 *err = check_subexp_matching_top (mctx, &next_state->nodes,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2313 cur_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2314 if (BE (*err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2315 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2316
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2317 /* If the next state has back references. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2318 if (next_state->has_backref)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2319 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2320 *err = transit_state_bkref (mctx, &next_state->nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2321 if (BE (*err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2322 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2323 next_state = mctx->state_log[cur_idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2324 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2325 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2326
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2327 return next_state;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2328 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2329
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2330 /* Skip bytes in the input that correspond to part of a
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2331 multi-byte match, then look in the log for a state
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2332 from which to restart matching. */
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2333 static re_dfastate_t *
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2334 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2335 find_recover_state (reg_errcode_t err, re_match_context_t mctx)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2336 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2337 re_dfastate_t *cur_state = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2338 do
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2339 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2340 int max = mctx->state_log_top;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2341 int cur_str_idx = re_string_cur_idx (&mctx->input);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2342
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2343 do
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2344 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2345 if (++cur_str_idx > max)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2346 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2347 re_string_skip_bytes (&mctx->input, 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2348 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2349 while (mctx->state_log[cur_str_idx] == NULL);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2350
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2351 cur_state = merge_state_with_log (err, mctx, NULL);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2352 }
6119 c3bf2ea44695 Make regex safe for g++. This fixes one real bug (an "err" Paul Eggert <eggert@cs.ucla.edu> parents: 6101 diff changeset	2353 while (*err == REG_NOERROR && cur_state == NULL);
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2354 return cur_state;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2355 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2356
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2357 /* Helper functions for transit_state. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2358
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2359 /* From the node set CUR_NODES, pick up the nodes whose types are
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2360 OP_OPEN_SUBEXP and which have corresponding back references in the regular
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2361 expression. And register them to use them later for evaluating the
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2362 correspoding back references. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2363
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2364 static reg_errcode_t
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2365 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2366 check_subexp_matching_top (re_match_context_t mctx, re_node_set cur_nodes,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2367 int str_idx)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2368 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2369 re_dfa_t *const dfa = mctx->dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2370 int node_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2371 reg_errcode_t err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2372
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2373 /* TODO: This isn't efficient.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2374 Because there might be more than one nodes whose types are
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2375 OP_OPEN_SUBEXP and whose index is SUBEXP_IDX, we must check all
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2376 nodes.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2377 E.g. RE: (a){2} */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2378 for (node_idx = 0; node_idx < cur_nodes->nelem; ++node_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2379 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2380 int node = cur_nodes->elems[node_idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2381 if (dfa->nodes[node].type == OP_OPEN_SUBEXP
6171 5862ee08bfc1 * lib/regcomp.c (re_compile_fastmap_iter, init_dfa, init_word_char): Paul Eggert <eggert@cs.ucla.edu> parents: 6125 diff changeset	2382 && dfa->nodes[node].opr.idx < CHAR_BIT * sizeof dfa->used_bkref_map
5862ee08bfc1 * lib/regcomp.c (re_compile_fastmap_iter, init_dfa, init_word_char): Paul Eggert <eggert@cs.ucla.edu> parents: 6125 diff changeset	2383 && dfa->used_bkref_map & (1u << dfa->nodes[node].opr.idx))
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2384 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2385 err = match_ctx_add_subtop (mctx, node, str_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2386 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2387 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2388 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2389 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2390 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2391 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2392
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2393 #if 0
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2394 /* Return the next state to which the current state STATE will transit by
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2395 accepting the current input byte. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2396
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2397 static re_dfastate_t *
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2398 transit_state_sb (err, mctx, state)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2399 reg_errcode_t *err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2400 re_match_context_t *mctx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2401 re_dfastate_t *state;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2402 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2403 re_dfa_t *const dfa = mctx->dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2404 re_node_set next_nodes;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2405 re_dfastate_t *next_state;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2406 int node_cnt, cur_str_idx = re_string_cur_idx (&mctx->input);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2407 unsigned int context;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2408
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2409 *err = re_node_set_alloc (&next_nodes, state->nodes.nelem + 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2410 if (BE (*err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2411 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2412 for (node_cnt = 0; node_cnt < state->nodes.nelem; ++node_cnt)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2413 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2414 int cur_node = state->nodes.elems[node_cnt];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2415 if (check_node_accept (mctx, dfa->nodes + cur_node, cur_str_idx))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2416 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2417 *err = re_node_set_merge (&next_nodes,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2418 dfa->eclosures + dfa->nexts[cur_node]);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2419 if (BE (*err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2420 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2421 re_node_set_free (&next_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2422 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2423 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2424 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2425 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2426 context = re_string_context_at (&mctx->input, cur_str_idx, mctx->eflags);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2427 next_state = re_acquire_state_context (err, dfa, &next_nodes, context);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2428 /* We don't need to check errors here, since the return value of
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2429 this function is next_state and ERR is already set. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2430
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2431 re_node_set_free (&next_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2432 re_string_skip_bytes (&mctx->input, 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2433 return next_state;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2434 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2435 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2436
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2437 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2438 static reg_errcode_t
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2439 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2440 transit_state_mb (re_match_context_t mctx, re_dfastate_t pstate)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2441 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2442 re_dfa_t *const dfa = mctx->dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2443 reg_errcode_t err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2444 int i;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2445
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2446 for (i = 0; i < pstate->nodes.nelem; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2447 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2448 re_node_set dest_nodes, *new_nodes;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2449 int cur_node_idx = pstate->nodes.elems[i];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2450 int naccepted, dest_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2451 unsigned int context;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2452 re_dfastate_t *dest_state;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2453
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2454 if (!dfa->nodes[cur_node_idx].accept_mb)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2455 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2456
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2457 if (dfa->nodes[cur_node_idx].constraint)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2458 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2459 context = re_string_context_at (&mctx->input,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2460 re_string_cur_idx (&mctx->input),
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2461 mctx->eflags);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2462 if (NOT_SATISFY_NEXT_CONSTRAINT (dfa->nodes[cur_node_idx].constraint,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2463 context))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2464 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2465 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2466
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2467 /* How many bytes the node can accept? */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2468 naccepted = check_node_accept_bytes (dfa, cur_node_idx, &mctx->input,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2469 re_string_cur_idx (&mctx->input));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2470 if (naccepted == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2471 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2472
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2473 /* The node can accepts `naccepted' bytes. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2474 dest_idx = re_string_cur_idx (&mctx->input) + naccepted;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2475 mctx->max_mb_elem_len = ((mctx->max_mb_elem_len < naccepted) ? naccepted
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2476 : mctx->max_mb_elem_len);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2477 err = clean_state_log_if_needed (mctx, dest_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2478 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2479 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2480 #ifdef DEBUG
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2481 assert (dfa->nexts[cur_node_idx] != -1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2482 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2483 new_nodes = dfa->eclosures + dfa->nexts[cur_node_idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2484
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2485 dest_state = mctx->state_log[dest_idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2486 if (dest_state == NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2487 dest_nodes = *new_nodes;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2488 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2489 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2490 err = re_node_set_init_union (&dest_nodes,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2491 dest_state->entrance_nodes, new_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2492 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2493 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2494 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2495 context = re_string_context_at (&mctx->input, dest_idx - 1, mctx->eflags);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2496 mctx->state_log[dest_idx]
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2497 = re_acquire_state_context (&err, dfa, &dest_nodes, context);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2498 if (dest_state != NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2499 re_node_set_free (&dest_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2500 if (BE (mctx->state_log[dest_idx] == NULL && err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2501 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2502 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2503 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2504 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2505 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2506
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2507 static reg_errcode_t
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2508 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2509 transit_state_bkref (re_match_context_t mctx, const re_node_set nodes)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2510 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2511 re_dfa_t *const dfa = mctx->dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2512 reg_errcode_t err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2513 int i;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2514 int cur_str_idx = re_string_cur_idx (&mctx->input);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2515
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2516 for (i = 0; i < nodes->nelem; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2517 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2518 int dest_str_idx, prev_nelem, bkc_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2519 int node_idx = nodes->elems[i];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2520 unsigned int context;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2521 const re_token_t *node = dfa->nodes + node_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2522 re_node_set *new_dest_nodes;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2523
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2524 /* Check whether `node' is a backreference or not. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2525 if (node->type != OP_BACK_REF)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2526 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2527
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2528 if (node->constraint)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2529 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2530 context = re_string_context_at (&mctx->input, cur_str_idx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2531 mctx->eflags);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2532 if (NOT_SATISFY_NEXT_CONSTRAINT (node->constraint, context))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2533 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2534 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2535
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2536 /* `node' is a backreference.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2537 Check the substring which the substring matched. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2538 bkc_idx = mctx->nbkref_ents;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2539 err = get_subexp (mctx, node_idx, cur_str_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2540 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2541 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2542
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2543 /* And add the epsilon closures (which is `new_dest_nodes') of
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2544 the backreference to appropriate state_log. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2545 #ifdef DEBUG
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2546 assert (dfa->nexts[node_idx] != -1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2547 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2548 for (; bkc_idx < mctx->nbkref_ents; ++bkc_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2549 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2550 int subexp_len;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2551 re_dfastate_t *dest_state;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2552 struct re_backref_cache_entry *bkref_ent;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2553 bkref_ent = mctx->bkref_ents + bkc_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2554 if (bkref_ent->node != node_idx \|\| bkref_ent->str_idx != cur_str_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2555 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2556 subexp_len = bkref_ent->subexp_to - bkref_ent->subexp_from;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2557 new_dest_nodes = (subexp_len == 0
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2558 ? dfa->eclosures + dfa->edests[node_idx].elems[0]
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2559 : dfa->eclosures + dfa->nexts[node_idx]);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2560 dest_str_idx = (cur_str_idx + bkref_ent->subexp_to
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2561 - bkref_ent->subexp_from);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2562 context = re_string_context_at (&mctx->input, dest_str_idx - 1,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2563 mctx->eflags);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2564 dest_state = mctx->state_log[dest_str_idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2565 prev_nelem = ((mctx->state_log[cur_str_idx] == NULL) ? 0
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2566 : mctx->state_log[cur_str_idx]->nodes.nelem);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2567 /* Add `new_dest_node' to state_log. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2568 if (dest_state == NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2569 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2570 mctx->state_log[dest_str_idx]
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2571 = re_acquire_state_context (&err, dfa, new_dest_nodes,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2572 context);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2573 if (BE (mctx->state_log[dest_str_idx] == NULL
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2574 && err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2575 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2576 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2577 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2578 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2579 re_node_set dest_nodes;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2580 err = re_node_set_init_union (&dest_nodes,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2581 dest_state->entrance_nodes,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2582 new_dest_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2583 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2584 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2585 re_node_set_free (&dest_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2586 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2587 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2588 mctx->state_log[dest_str_idx]
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2589 = re_acquire_state_context (&err, dfa, &dest_nodes, context);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2590 re_node_set_free (&dest_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2591 if (BE (mctx->state_log[dest_str_idx] == NULL
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2592 && err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2593 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2594 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2595 /* We need to check recursively if the backreference can epsilon
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2596 transit. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2597 if (subexp_len == 0
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2598 && mctx->state_log[cur_str_idx]->nodes.nelem > prev_nelem)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2599 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2600 err = check_subexp_matching_top (mctx, new_dest_nodes,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2601 cur_str_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2602 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2603 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2604 err = transit_state_bkref (mctx, new_dest_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2605 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2606 goto free_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2607 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2608 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2609 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2610 err = REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2611 free_return:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2612 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2613 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2614
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2615 /* Enumerate all the candidates which the backreference BKREF_NODE can match
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2616 at BKREF_STR_IDX, and register them by match_ctx_add_entry().
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2617 Note that we might collect inappropriate candidates here.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2618 However, the cost of checking them strictly here is too high, then we
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2619 delay these checking for prune_impossible_nodes(). */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2620
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2621 static reg_errcode_t
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2622 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2623 get_subexp (re_match_context_t *mctx, int bkref_node, int bkref_str_idx)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2624 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2625 re_dfa_t *const dfa = mctx->dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2626 int subexp_num, sub_top_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2627 const char buf = (const char ) re_string_get_buffer (&mctx->input);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2628 /* Return if we have already checked BKREF_NODE at BKREF_STR_IDX. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2629 int cache_idx = search_cur_bkref_entry (mctx, bkref_str_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2630 if (cache_idx != -1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2631 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2632 const struct re_backref_cache_entry *entry = mctx->bkref_ents + cache_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2633 do
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2634 if (entry->node == bkref_node)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2635 return REG_NOERROR; /* We already checked it. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2636 while (entry++->more);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2637 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2638
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2639 subexp_num = dfa->nodes[bkref_node].opr.idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2640
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2641 /* For each sub expression */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2642 for (sub_top_idx = 0; sub_top_idx < mctx->nsub_tops; ++sub_top_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2643 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2644 reg_errcode_t err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2645 re_sub_match_top_t *sub_top = mctx->sub_tops[sub_top_idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2646 re_sub_match_last_t *sub_last;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2647 int sub_last_idx, sl_str, bkref_str_off;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2648
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2649 if (dfa->nodes[sub_top->node].opr.idx != subexp_num)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2650 continue; /* It isn't related. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2651
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2652 sl_str = sub_top->str_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2653 bkref_str_off = bkref_str_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2654 /* At first, check the last node of sub expressions we already
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2655 evaluated. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2656 for (sub_last_idx = 0; sub_last_idx < sub_top->nlasts; ++sub_last_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2657 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2658 int sl_str_diff;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2659 sub_last = sub_top->lasts[sub_last_idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2660 sl_str_diff = sub_last->str_idx - sl_str;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2661 /* The matched string by the sub expression match with the substring
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2662 at the back reference? */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2663 if (sl_str_diff > 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2664 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2665 if (BE (bkref_str_off + sl_str_diff > mctx->input.valid_len, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2666 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2667 /* Not enough chars for a successful match. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2668 if (bkref_str_off + sl_str_diff > mctx->input.len)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2669 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2670
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2671 err = clean_state_log_if_needed (mctx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2672 bkref_str_off
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2673 + sl_str_diff);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2674 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2675 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2676 buf = (const char *) re_string_get_buffer (&mctx->input);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2677 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2678 if (memcmp (buf + bkref_str_off, buf + sl_str, sl_str_diff) != 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2679 break; /* We don't need to search this sub expression any more. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2680 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2681 bkref_str_off += sl_str_diff;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2682 sl_str += sl_str_diff;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2683 err = get_subexp_sub (mctx, sub_top, sub_last, bkref_node,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2684 bkref_str_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2685
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2686 /* Reload buf, since the preceding call might have reallocated
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2687 the buffer. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2688 buf = (const char *) re_string_get_buffer (&mctx->input);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2689
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2690 if (err == REG_NOMATCH)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2691 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2692 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2693 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2694 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2695
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2696 if (sub_last_idx < sub_top->nlasts)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2697 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2698 if (sub_last_idx > 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2699 ++sl_str;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2700 /* Then, search for the other last nodes of the sub expression. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2701 for (; sl_str <= bkref_str_idx; ++sl_str)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2702 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2703 int cls_node, sl_str_off;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2704 const re_node_set *nodes;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2705 sl_str_off = sl_str - sub_top->str_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2706 /* The matched string by the sub expression match with the substring
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2707 at the back reference? */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2708 if (sl_str_off > 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2709 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2710 if (BE (bkref_str_off >= mctx->input.valid_len, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2711 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2712 /* If we are at the end of the input, we cannot match. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2713 if (bkref_str_off >= mctx->input.len)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2714 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2715
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2716 err = extend_buffers (mctx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2717 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2718 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2719
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2720 buf = (const char *) re_string_get_buffer (&mctx->input);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2721 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2722 if (buf [bkref_str_off++] != buf[sl_str - 1])
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2723 break; /* We don't need to search this sub expression
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2724 any more. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2725 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2726 if (mctx->state_log[sl_str] == NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2727 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2728 /* Does this state have a ')' of the sub expression? */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2729 nodes = &mctx->state_log[sl_str]->nodes;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2730 cls_node = find_subexp_node (dfa, nodes, subexp_num, OP_CLOSE_SUBEXP);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2731 if (cls_node == -1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2732 continue; /* No. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2733 if (sub_top->path == NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2734 {
6119 c3bf2ea44695 Make regex safe for g++. This fixes one real bug (an "err" Paul Eggert <eggert@cs.ucla.edu> parents: 6101 diff changeset	2735 sub_top->path = re_calloc (state_array_t,
c3bf2ea44695 Make regex safe for g++. This fixes one real bug (an "err" Paul Eggert <eggert@cs.ucla.edu> parents: 6101 diff changeset	2736 sl_str - sub_top->str_idx + 1);
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2737 if (sub_top->path == NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2738 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2739 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2740 /* Can the OP_OPEN_SUBEXP node arrive the OP_CLOSE_SUBEXP node
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2741 in the current context? */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2742 err = check_arrival (mctx, sub_top->path, sub_top->node,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2743 sub_top->str_idx, cls_node, sl_str, OP_CLOSE_SUBEXP);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2744 if (err == REG_NOMATCH)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2745 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2746 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2747 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2748 sub_last = match_ctx_add_sublast (sub_top, cls_node, sl_str);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2749 if (BE (sub_last == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2750 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2751 err = get_subexp_sub (mctx, sub_top, sub_last, bkref_node,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2752 bkref_str_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2753 if (err == REG_NOMATCH)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2754 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2755 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2756 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2757 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2758 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2759
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2760 /* Helper functions for get_subexp(). */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2761
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2762 /* Check SUB_LAST can arrive to the back reference BKREF_NODE at BKREF_STR.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2763 If it can arrive, register the sub expression expressed with SUB_TOP
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2764 and SUB_LAST. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2765
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2766 static reg_errcode_t
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2767 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2768 get_subexp_sub (re_match_context_t mctx, const re_sub_match_top_t sub_top,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2769 re_sub_match_last_t *sub_last, int bkref_node, int bkref_str)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2770 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2771 reg_errcode_t err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2772 int to_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2773 /* Can the subexpression arrive the back reference? */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2774 err = check_arrival (mctx, &sub_last->path, sub_last->node,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2775 sub_last->str_idx, bkref_node, bkref_str, OP_OPEN_SUBEXP);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2776 if (err != REG_NOERROR)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2777 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2778 err = match_ctx_add_entry (mctx, bkref_node, bkref_str, sub_top->str_idx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2779 sub_last->str_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2780 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2781 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2782 to_idx = bkref_str + sub_last->str_idx - sub_top->str_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2783 return clean_state_log_if_needed (mctx, to_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2784 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2785
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2786 /* Find the first node which is '(' or ')' and whose index is SUBEXP_IDX.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2787 Search '(' if FL_OPEN, or search ')' otherwise.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2788 TODO: This function isn't efficient...
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2789 Because there might be more than one nodes whose types are
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2790 OP_OPEN_SUBEXP and whose index is SUBEXP_IDX, we must check all
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2791 nodes.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2792 E.g. RE: (a){2} */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2793
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2794 static int
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2795 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2796 find_subexp_node (const re_dfa_t dfa, const re_node_set nodes,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2797 int subexp_idx, int type)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2798 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2799 int cls_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2800 for (cls_idx = 0; cls_idx < nodes->nelem; ++cls_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2801 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2802 int cls_node = nodes->elems[cls_idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2803 const re_token_t *node = dfa->nodes + cls_node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2804 if (node->type == type
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2805 && node->opr.idx == subexp_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2806 return cls_node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2807 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2808 return -1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2809 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2810
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2811 /* Check whether the node TOP_NODE at TOP_STR can arrive to the node
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2812 LAST_NODE at LAST_STR. We record the path onto PATH since it will be
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2813 heavily reused.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2814 Return REG_NOERROR if it can arrive, or REG_NOMATCH otherwise. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2815
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2816 static reg_errcode_t
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2817 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2818 check_arrival (re_match_context_t mctx, state_array_t path,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2819 int top_node, int top_str, int last_node, int last_str,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2820 int type)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2821 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2822 re_dfa_t *const dfa = mctx->dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2823 reg_errcode_t err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2824 int subexp_num, backup_cur_idx, str_idx, null_cnt;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2825 re_dfastate_t *cur_state = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2826 re_node_set *cur_nodes, next_nodes;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2827 re_dfastate_t **backup_state_log;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2828 unsigned int context;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2829
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2830 subexp_num = dfa->nodes[top_node].opr.idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2831 /* Extend the buffer if we need. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2832 if (BE (path->alloc < last_str + mctx->max_mb_elem_len + 1, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2833 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2834 re_dfastate_t **new_array;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2835 int old_alloc = path->alloc;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2836 path->alloc += last_str + mctx->max_mb_elem_len + 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2837 new_array = re_realloc (path->array, re_dfastate_t *, path->alloc);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2838 if (new_array == NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2839 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2840 path->alloc = old_alloc;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2841 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2842 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2843 path->array = new_array;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2844 memset (new_array + old_alloc, '\0',
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2845 sizeof (re_dfastate_t ) (path->alloc - old_alloc));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2846 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2847
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2848 str_idx = path->next_idx == 0 ? top_str : path->next_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2849
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2850 /* Temporary modify MCTX. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2851 backup_state_log = mctx->state_log;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2852 backup_cur_idx = mctx->input.cur_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2853 mctx->state_log = path->array;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2854 mctx->input.cur_idx = str_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2855
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2856 /* Setup initial node set. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2857 context = re_string_context_at (&mctx->input, str_idx - 1, mctx->eflags);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2858 if (str_idx == top_str)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2859 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2860 err = re_node_set_init_1 (&next_nodes, top_node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2861 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2862 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2863 err = check_arrival_expand_ecl (dfa, &next_nodes, subexp_num, type);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2864 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2865 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2866 re_node_set_free (&next_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2867 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2868 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2869 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2870 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2871 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2872 cur_state = mctx->state_log[str_idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2873 if (cur_state && cur_state->has_backref)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2874 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2875 err = re_node_set_init_copy (&next_nodes, &cur_state->nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2876 if (BE ( err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2877 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2878 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2879 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2880 re_node_set_init_empty (&next_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2881 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2882 if (str_idx == top_str \|\| (cur_state && cur_state->has_backref))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2883 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2884 if (next_nodes.nelem)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2885 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2886 err = expand_bkref_cache (mctx, &next_nodes, str_idx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2887 subexp_num, type);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2888 if (BE ( err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2889 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2890 re_node_set_free (&next_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2891 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2892 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2893 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2894 cur_state = re_acquire_state_context (&err, dfa, &next_nodes, context);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2895 if (BE (cur_state == NULL && err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2896 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2897 re_node_set_free (&next_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2898 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2899 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2900 mctx->state_log[str_idx] = cur_state;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2901 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2902
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2903 for (null_cnt = 0; str_idx < last_str && null_cnt <= mctx->max_mb_elem_len;)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2904 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2905 re_node_set_empty (&next_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2906 if (mctx->state_log[str_idx + 1])
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2907 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2908 err = re_node_set_merge (&next_nodes,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2909 &mctx->state_log[str_idx + 1]->nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2910 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2911 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2912 re_node_set_free (&next_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2913 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2914 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2915 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2916 if (cur_state)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2917 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2918 err = check_arrival_add_next_nodes (mctx, str_idx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2919 &cur_state->non_eps_nodes, &next_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2920 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2921 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2922 re_node_set_free (&next_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2923 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2924 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2925 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2926 ++str_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2927 if (next_nodes.nelem)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2928 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2929 err = check_arrival_expand_ecl (dfa, &next_nodes, subexp_num, type);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2930 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2931 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2932 re_node_set_free (&next_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2933 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2934 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2935 err = expand_bkref_cache (mctx, &next_nodes, str_idx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2936 subexp_num, type);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2937 if (BE ( err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2938 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2939 re_node_set_free (&next_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2940 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2941 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2942 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2943 context = re_string_context_at (&mctx->input, str_idx - 1, mctx->eflags);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2944 cur_state = re_acquire_state_context (&err, dfa, &next_nodes, context);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2945 if (BE (cur_state == NULL && err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2946 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2947 re_node_set_free (&next_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2948 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2949 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2950 mctx->state_log[str_idx] = cur_state;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2951 null_cnt = cur_state == NULL ? null_cnt + 1 : 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2952 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2953 re_node_set_free (&next_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2954 cur_nodes = (mctx->state_log[last_str] == NULL ? NULL
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2955 : &mctx->state_log[last_str]->nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2956 path->next_idx = str_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2957
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2958 /* Fix MCTX. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2959 mctx->state_log = backup_state_log;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2960 mctx->input.cur_idx = backup_cur_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2961
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2962 /* Then check the current node set has the node LAST_NODE. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2963 if (cur_nodes != NULL && re_node_set_contains (cur_nodes, last_node))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2964 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2965
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2966 return REG_NOMATCH;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2967 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2968
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2969 /* Helper functions for check_arrival. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2970
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2971 /* Calculate the destination nodes of CUR_NODES at STR_IDX, and append them
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2972 to NEXT_NODES.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2973 TODO: This function is similar to the functions transit_state*(),
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2974 however this function has many additional works.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2975 Can't we unify them? */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2976
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2977 static reg_errcode_t
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2978 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2979 check_arrival_add_next_nodes (re_match_context_t *mctx, int str_idx,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2980 re_node_set *cur_nodes,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	2981 re_node_set *next_nodes)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2982 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2983 re_dfa_t *const dfa = mctx->dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2984 int result;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2985 int cur_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2986 reg_errcode_t err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2987 re_node_set union_set;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2988 re_node_set_init_empty (&union_set);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2989 for (cur_idx = 0; cur_idx < cur_nodes->nelem; ++cur_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2990 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2991 int naccepted = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2992 int cur_node = cur_nodes->elems[cur_idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2993 #ifdef DEBUG
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2994 re_token_type_t type = dfa->nodes[cur_node].type;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2995 assert (!IS_EPSILON_NODE (type));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2996 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2997 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2998 /* If the node may accept `multi byte'. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	2999 if (dfa->nodes[cur_node].accept_mb)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3000 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3001 naccepted = check_node_accept_bytes (dfa, cur_node, &mctx->input,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3002 str_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3003 if (naccepted > 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3004 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3005 re_dfastate_t *dest_state;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3006 int next_node = dfa->nexts[cur_node];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3007 int next_idx = str_idx + naccepted;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3008 dest_state = mctx->state_log[next_idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3009 re_node_set_empty (&union_set);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3010 if (dest_state)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3011 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3012 err = re_node_set_merge (&union_set, &dest_state->nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3013 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3014 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3015 re_node_set_free (&union_set);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3016 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3017 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3018 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3019 result = re_node_set_insert (&union_set, next_node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3020 if (BE (result < 0, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3021 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3022 re_node_set_free (&union_set);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3023 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3024 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3025 mctx->state_log[next_idx] = re_acquire_state (&err, dfa,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3026 &union_set);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3027 if (BE (mctx->state_log[next_idx] == NULL
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3028 && err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3029 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3030 re_node_set_free (&union_set);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3031 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3032 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3033 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3034 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3035 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3036 if (naccepted
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3037 \|\| check_node_accept (mctx, dfa->nodes + cur_node, str_idx))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3038 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3039 result = re_node_set_insert (next_nodes, dfa->nexts[cur_node]);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3040 if (BE (result < 0, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3041 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3042 re_node_set_free (&union_set);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3043 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3044 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3045 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3046 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3047 re_node_set_free (&union_set);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3048 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3049 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3050
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3051 /* For all the nodes in CUR_NODES, add the epsilon closures of them to
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3052 CUR_NODES, however exclude the nodes which are:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3053 - inside the sub expression whose number is EX_SUBEXP, if FL_OPEN.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3054 - out of the sub expression whose number is EX_SUBEXP, if !FL_OPEN.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3055 */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3056
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3057 static reg_errcode_t
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	3058 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	3059 check_arrival_expand_ecl (re_dfa_t dfa, re_node_set cur_nodes,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	3060 int ex_subexp, int type)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3061 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3062 reg_errcode_t err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3063 int idx, outside_node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3064 re_node_set new_nodes;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3065 #ifdef DEBUG
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3066 assert (cur_nodes->nelem);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3067 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3068 err = re_node_set_alloc (&new_nodes, cur_nodes->nelem);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3069 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3070 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3071 /* Create a new node set NEW_NODES with the nodes which are epsilon
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3072 closures of the node in CUR_NODES. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3073
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3074 for (idx = 0; idx < cur_nodes->nelem; ++idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3075 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3076 int cur_node = cur_nodes->elems[idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3077 re_node_set *eclosure = dfa->eclosures + cur_node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3078 outside_node = find_subexp_node (dfa, eclosure, ex_subexp, type);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3079 if (outside_node == -1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3080 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3081 /* There are no problematic nodes, just merge them. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3082 err = re_node_set_merge (&new_nodes, eclosure);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3083 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3084 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3085 re_node_set_free (&new_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3086 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3087 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3088 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3089 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3090 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3091 /* There are problematic nodes, re-calculate incrementally. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3092 err = check_arrival_expand_ecl_sub (dfa, &new_nodes, cur_node,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3093 ex_subexp, type);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3094 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3095 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3096 re_node_set_free (&new_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3097 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3098 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3099 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3100 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3101 re_node_set_free (cur_nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3102 *cur_nodes = new_nodes;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3103 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3104 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3105
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3106 /* Helper function for check_arrival_expand_ecl.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3107 Check incrementally the epsilon closure of TARGET, and if it isn't
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3108 problematic append it to DST_NODES. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3109
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3110 static reg_errcode_t
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	3111 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	3112 check_arrival_expand_ecl_sub (re_dfa_t dfa, re_node_set dst_nodes,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	3113 int target, int ex_subexp, int type)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3114 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3115 int cur_node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3116 for (cur_node = target; !re_node_set_contains (dst_nodes, cur_node);)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3117 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3118 int err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3119
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3120 if (dfa->nodes[cur_node].type == type
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3121 && dfa->nodes[cur_node].opr.idx == ex_subexp)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3122 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3123 if (type == OP_CLOSE_SUBEXP)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3124 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3125 err = re_node_set_insert (dst_nodes, cur_node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3126 if (BE (err == -1, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3127 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3128 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3129 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3130 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3131 err = re_node_set_insert (dst_nodes, cur_node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3132 if (BE (err == -1, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3133 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3134 if (dfa->edests[cur_node].nelem == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3135 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3136 if (dfa->edests[cur_node].nelem == 2)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3137 {
6119 c3bf2ea44695 Make regex safe for g++. This fixes one real bug (an "err" Paul Eggert <eggert@cs.ucla.edu> parents: 6101 diff changeset	3138 reg_errcode_t ret =
c3bf2ea44695 Make regex safe for g++. This fixes one real bug (an "err" Paul Eggert <eggert@cs.ucla.edu> parents: 6101 diff changeset	3139 check_arrival_expand_ecl_sub (dfa, dst_nodes,
c3bf2ea44695 Make regex safe for g++. This fixes one real bug (an "err" Paul Eggert <eggert@cs.ucla.edu> parents: 6101 diff changeset	3140 dfa->edests[cur_node].elems[1],
c3bf2ea44695 Make regex safe for g++. This fixes one real bug (an "err" Paul Eggert <eggert@cs.ucla.edu> parents: 6101 diff changeset	3141 ex_subexp, type);
c3bf2ea44695 Make regex safe for g++. This fixes one real bug (an "err" Paul Eggert <eggert@cs.ucla.edu> parents: 6101 diff changeset	3142 if (BE (ret != REG_NOERROR, 0))
c3bf2ea44695 Make regex safe for g++. This fixes one real bug (an "err" Paul Eggert <eggert@cs.ucla.edu> parents: 6101 diff changeset	3143 return ret;
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3144 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3145 cur_node = dfa->edests[cur_node].elems[0];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3146 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3147 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3148 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3149
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3150
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3151 /* For all the back references in the current state, calculate the
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3152 destination of the back references by the appropriate entry
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3153 in MCTX->BKREF_ENTS. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3154
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3155 static reg_errcode_t
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	3156 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	3157 expand_bkref_cache (re_match_context_t mctx, re_node_set cur_nodes,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	3158 int cur_str, int subexp_num, int type)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3159 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3160 re_dfa_t *const dfa = mctx->dfa;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3161 reg_errcode_t err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3162 int cache_idx_start = search_cur_bkref_entry (mctx, cur_str);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3163 struct re_backref_cache_entry *ent;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3164
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3165 if (cache_idx_start == -1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3166 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3167
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3168 restart:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3169 ent = mctx->bkref_ents + cache_idx_start;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3170 do
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3171 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3172 int to_idx, next_node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3173
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3174 /* Is this entry ENT is appropriate? */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3175 if (!re_node_set_contains (cur_nodes, ent->node))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3176 continue; /* No. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3177
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3178 to_idx = cur_str + ent->subexp_to - ent->subexp_from;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3179 /* Calculate the destination of the back reference, and append it
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3180 to MCTX->STATE_LOG. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3181 if (to_idx == cur_str)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3182 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3183 /* The backreference did epsilon transit, we must re-check all the
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3184 node in the current state. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3185 re_node_set new_dests;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3186 reg_errcode_t err2, err3;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3187 next_node = dfa->edests[ent->node].elems[0];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3188 if (re_node_set_contains (cur_nodes, next_node))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3189 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3190 err = re_node_set_init_1 (&new_dests, next_node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3191 err2 = check_arrival_expand_ecl (dfa, &new_dests, subexp_num, type);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3192 err3 = re_node_set_merge (cur_nodes, &new_dests);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3193 re_node_set_free (&new_dests);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3194 if (BE (err != REG_NOERROR \|\| err2 != REG_NOERROR
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3195 \|\| err3 != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3196 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3197 err = (err != REG_NOERROR ? err
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3198 : (err2 != REG_NOERROR ? err2 : err3));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3199 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3200 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3201 /* TODO: It is still inefficient... */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3202 goto restart;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3203 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3204 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3205 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3206 re_node_set union_set;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3207 next_node = dfa->nexts[ent->node];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3208 if (mctx->state_log[to_idx])
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3209 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3210 int ret;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3211 if (re_node_set_contains (&mctx->state_log[to_idx]->nodes,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3212 next_node))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3213 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3214 err = re_node_set_init_copy (&union_set,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3215 &mctx->state_log[to_idx]->nodes);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3216 ret = re_node_set_insert (&union_set, next_node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3217 if (BE (err != REG_NOERROR \|\| ret < 0, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3218 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3219 re_node_set_free (&union_set);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3220 err = err != REG_NOERROR ? err : REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3221 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3222 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3223 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3224 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3225 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3226 err = re_node_set_init_1 (&union_set, next_node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3227 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3228 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3229 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3230 mctx->state_log[to_idx] = re_acquire_state (&err, dfa, &union_set);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3231 re_node_set_free (&union_set);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3232 if (BE (mctx->state_log[to_idx] == NULL
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3233 && err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3234 return err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3235 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3236 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3237 while (ent++->more);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3238 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3239 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3240
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3241 /* Build transition table for the state.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3242 Return 1 if succeeded, otherwise return NULL. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3243
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3244 static int
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	3245 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	3246 build_trtable (re_dfa_t dfa, re_dfastate_t state)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3247 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3248 reg_errcode_t err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3249 int i, j, ch, need_word_trtable = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3250 unsigned int elem, mask;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3251 int dests_node_malloced = 0, dest_states_malloced = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3252 int ndests; /* Number of the destination states from `state'. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3253 re_dfastate_t **trtable;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3254 re_dfastate_t dest_states = NULL, dest_states_word, **dest_states_nl;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3255 re_node_set follows, *dests_node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3256 bitset *dests_ch;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3257 bitset acceptable;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3258
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3259 /* We build DFA states which corresponds to the destination nodes
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3260 from `state'. `dests_node[i]' represents the nodes which i-th
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3261 destination state contains, and `dests_ch[i]' represents the
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3262 characters which i-th destination state accepts. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3263 if (__libc_use_alloca ((sizeof (re_node_set) + sizeof (bitset)) * SBC_MAX))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3264 dests_node = (re_node_set *)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3265 alloca ((sizeof (re_node_set) + sizeof (bitset)) * SBC_MAX);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3266 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3267 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3268 dests_node = (re_node_set *)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3269 malloc ((sizeof (re_node_set) + sizeof (bitset)) * SBC_MAX);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3270 if (BE (dests_node == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3271 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3272 dests_node_malloced = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3273 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3274 dests_ch = (bitset *) (dests_node + SBC_MAX);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3275
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3276 /* Initialize transiton table. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3277 state->word_trtable = state->trtable = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3278
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3279 /* At first, group all nodes belonging to `state' into several
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3280 destinations. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3281 ndests = group_nodes_into_DFAstates (dfa, state, dests_node, dests_ch);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3282 if (BE (ndests <= 0, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3283 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3284 if (dests_node_malloced)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3285 free (dests_node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3286 /* Return 0 in case of an error, 1 otherwise. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3287 if (ndests == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3288 {
6119 c3bf2ea44695 Make regex safe for g++. This fixes one real bug (an "err" Paul Eggert <eggert@cs.ucla.edu> parents: 6101 diff changeset	3289 state->trtable = re_calloc (re_dfastate_t *, SBC_MAX);
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3290 return 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3291 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3292 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3293 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3294
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3295 err = re_node_set_alloc (&follows, ndests + 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3296 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3297 goto out_free;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3298
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3299 if (__libc_use_alloca ((sizeof (re_node_set) + sizeof (bitset)) * SBC_MAX
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3300 + ndests * 3 * sizeof (re_dfastate_t *)))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3301 dest_states = (re_dfastate_t **)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3302 alloca (ndests * 3 * sizeof (re_dfastate_t *));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3303 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3304 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3305 dest_states = (re_dfastate_t **)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3306 malloc (ndests * 3 * sizeof (re_dfastate_t *));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3307 if (BE (dest_states == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3308 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3309 out_free:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3310 if (dest_states_malloced)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3311 free (dest_states);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3312 re_node_set_free (&follows);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3313 for (i = 0; i < ndests; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3314 re_node_set_free (dests_node + i);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3315 if (dests_node_malloced)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3316 free (dests_node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3317 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3318 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3319 dest_states_malloced = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3320 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3321 dest_states_word = dest_states + ndests;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3322 dest_states_nl = dest_states_word + ndests;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3323 bitset_empty (acceptable);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3324
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3325 /* Then build the states for all destinations. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3326 for (i = 0; i < ndests; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3327 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3328 int next_node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3329 re_node_set_empty (&follows);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3330 /* Merge the follows of this destination states. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3331 for (j = 0; j < dests_node[i].nelem; ++j)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3332 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3333 next_node = dfa->nexts[dests_node[i].elems[j]];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3334 if (next_node != -1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3335 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3336 err = re_node_set_merge (&follows, dfa->eclosures + next_node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3337 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3338 goto out_free;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3339 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3340 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3341 dest_states[i] = re_acquire_state_context (&err, dfa, &follows, 0);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3342 if (BE (dest_states[i] == NULL && err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3343 goto out_free;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3344 /* If the new state has context constraint,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3345 build appropriate states for these contexts. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3346 if (dest_states[i]->has_constraint)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3347 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3348 dest_states_word[i] = re_acquire_state_context (&err, dfa, &follows,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3349 CONTEXT_WORD);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3350 if (BE (dest_states_word[i] == NULL && err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3351 goto out_free;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3352
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3353 if (dest_states[i] != dest_states_word[i] && dfa->mb_cur_max > 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3354 need_word_trtable = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3355
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3356 dest_states_nl[i] = re_acquire_state_context (&err, dfa, &follows,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3357 CONTEXT_NEWLINE);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3358 if (BE (dest_states_nl[i] == NULL && err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3359 goto out_free;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3360 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3361 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3362 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3363 dest_states_word[i] = dest_states[i];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3364 dest_states_nl[i] = dest_states[i];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3365 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3366 bitset_merge (acceptable, dests_ch[i]);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3367 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3368
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3369 if (!BE (need_word_trtable, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3370 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3371 /* We don't care about whether the following character is a word
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3372 character, or we are in a single-byte character set so we can
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3373 discern by looking at the character code: allocate a
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3374 256-entry transition table. */
6119 c3bf2ea44695 Make regex safe for g++. This fixes one real bug (an "err" Paul Eggert <eggert@cs.ucla.edu> parents: 6101 diff changeset	3375 trtable = state->trtable = re_calloc (re_dfastate_t *, SBC_MAX);
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3376 if (BE (trtable == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3377 goto out_free;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3378
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3379 /* For all characters ch...: */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3380 for (i = 0; i < BITSET_UINTS; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3381 for (ch = i * UINT_BITS, elem = acceptable[i], mask = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3382 elem;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3383 mask <<= 1, elem >>= 1, ++ch)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3384 if (BE (elem & 1, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3385 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3386 /* There must be exactly one destination which accepts
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3387 character ch. See group_nodes_into_DFAstates. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3388 for (j = 0; (dests_ch[j][i] & mask) == 0; ++j)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3389 ;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3390
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3391 /* j-th destination accepts the word character ch. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3392 if (dfa->word_char[i] & mask)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3393 trtable[ch] = dest_states_word[j];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3394 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3395 trtable[ch] = dest_states[j];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3396 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3397 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3398 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3399 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3400 /* We care about whether the following character is a word
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3401 character, and we are in a multi-byte character set: discern
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3402 by looking at the character code: build two 256-entry
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3403 transition tables, one starting at trtable[0] and one
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3404 starting at trtable[SBC_MAX]. */
6119 c3bf2ea44695 Make regex safe for g++. This fixes one real bug (an "err" Paul Eggert <eggert@cs.ucla.edu> parents: 6101 diff changeset	3405 trtable = state->word_trtable = re_calloc (re_dfastate_t , 2 SBC_MAX);
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3406 if (BE (trtable == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3407 goto out_free;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3408
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3409 /* For all characters ch...: */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3410 for (i = 0; i < BITSET_UINTS; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3411 for (ch = i * UINT_BITS, elem = acceptable[i], mask = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3412 elem;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3413 mask <<= 1, elem >>= 1, ++ch)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3414 if (BE (elem & 1, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3415 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3416 /* There must be exactly one destination which accepts
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3417 character ch. See group_nodes_into_DFAstates. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3418 for (j = 0; (dests_ch[j][i] & mask) == 0; ++j)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3419 ;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3420
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3421 /* j-th destination accepts the word character ch. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3422 trtable[ch] = dest_states[j];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3423 trtable[ch + SBC_MAX] = dest_states_word[j];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3424 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3425 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3426
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3427 /* new line */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3428 if (bitset_contain (acceptable, NEWLINE_CHAR))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3429 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3430 /* The current state accepts newline character. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3431 for (j = 0; j < ndests; ++j)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3432 if (bitset_contain (dests_ch[j], NEWLINE_CHAR))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3433 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3434 /* k-th destination accepts newline character. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3435 trtable[NEWLINE_CHAR] = dest_states_nl[j];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3436 if (need_word_trtable)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3437 trtable[NEWLINE_CHAR + SBC_MAX] = dest_states_nl[j];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3438 /* There must be only one destination which accepts
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3439 newline. See group_nodes_into_DFAstates. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3440 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3441 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3442 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3443
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3444 if (dest_states_malloced)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3445 free (dest_states);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3446
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3447 re_node_set_free (&follows);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3448 for (i = 0; i < ndests; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3449 re_node_set_free (dests_node + i);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3450
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3451 if (dests_node_malloced)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3452 free (dests_node);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3453
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3454 return 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3455 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3456
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3457 /* Group all nodes belonging to STATE into several destinations.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3458 Then for all destinations, set the nodes belonging to the destination
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3459 to DESTS_NODE[i] and set the characters accepted by the destination
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3460 to DEST_CH[i]. This function return the number of destinations. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3461
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3462 static int
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	3463 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	3464 group_nodes_into_DFAstates (re_dfa_t dfa, const re_dfastate_t state,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	3465 re_node_set dests_node, bitset dests_ch)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3466 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3467 reg_errcode_t err;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3468 int result;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3469 int i, j, k;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3470 int ndests; /* Number of the destinations from `state'. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3471 bitset accepts; /* Characters a node can accept. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3472 const re_node_set *cur_nodes = &state->nodes;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3473 bitset_empty (accepts);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3474 ndests = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3475
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3476 /* For all the nodes belonging to `state', */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3477 for (i = 0; i < cur_nodes->nelem; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3478 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3479 re_token_t *node = &dfa->nodes[cur_nodes->elems[i]];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3480 re_token_type_t type = node->type;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3481 unsigned int constraint = node->constraint;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3482
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3483 /* Enumerate all single byte character this node can accept. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3484 if (type == CHARACTER)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3485 bitset_set (accepts, node->opr.c);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3486 else if (type == SIMPLE_BRACKET)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3487 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3488 bitset_merge (accepts, node->opr.sbcset);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3489 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3490 else if (type == OP_PERIOD)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3491 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3492 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3493 if (dfa->mb_cur_max > 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3494 bitset_merge (accepts, dfa->sb_char);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3495 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3496 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3497 bitset_set_all (accepts);
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	3498 if (!(dfa->syntax & REG_DOT_NEWLINE))
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3499 bitset_clear (accepts, '\n');
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	3500 if (dfa->syntax & REG_DOT_NOT_NULL)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3501 bitset_clear (accepts, '\0');
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3502 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3503 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3504 else if (type == OP_UTF8_PERIOD)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3505 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3506 memset (accepts, 255, sizeof (unsigned int) * BITSET_UINTS / 2);
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	3507 if (!(dfa->syntax & REG_DOT_NEWLINE))
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3508 bitset_clear (accepts, '\n');
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	3509 if (dfa->syntax & REG_DOT_NOT_NULL)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3510 bitset_clear (accepts, '\0');
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3511 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3512 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3513 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3514 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3515
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3516 /* Check the `accepts' and sift the characters which are not
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3517 match it the context. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3518 if (constraint)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3519 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3520 if (constraint & NEXT_NEWLINE_CONSTRAINT)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3521 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3522 int accepts_newline = bitset_contain (accepts, NEWLINE_CHAR);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3523 bitset_empty (accepts);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3524 if (accepts_newline)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3525 bitset_set (accepts, NEWLINE_CHAR);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3526 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3527 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3528 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3529 if (constraint & NEXT_ENDBUF_CONSTRAINT)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3530 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3531 bitset_empty (accepts);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3532 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3533 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3534
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3535 if (constraint & NEXT_WORD_CONSTRAINT)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3536 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3537 unsigned int any_set = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3538 if (type == CHARACTER && !node->word_char)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3539 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3540 bitset_empty (accepts);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3541 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3542 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3543 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3544 if (dfa->mb_cur_max > 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3545 for (j = 0; j < BITSET_UINTS; ++j)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3546 any_set \|= (accepts[j] &= (dfa->word_char[j] \| ~dfa->sb_char[j]));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3547 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3548 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3549 for (j = 0; j < BITSET_UINTS; ++j)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3550 any_set \|= (accepts[j] &= dfa->word_char[j]);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3551 if (!any_set)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3552 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3553 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3554 if (constraint & NEXT_NOTWORD_CONSTRAINT)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3555 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3556 unsigned int any_set = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3557 if (type == CHARACTER && node->word_char)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3558 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3559 bitset_empty (accepts);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3560 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3561 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3562 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3563 if (dfa->mb_cur_max > 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3564 for (j = 0; j < BITSET_UINTS; ++j)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3565 any_set \|= (accepts[j] &= ~(dfa->word_char[j] & dfa->sb_char[j]));
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3566 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3567 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3568 for (j = 0; j < BITSET_UINTS; ++j)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3569 any_set \|= (accepts[j] &= ~dfa->word_char[j]);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3570 if (!any_set)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3571 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3572 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3573 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3574
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3575 /* Then divide `accepts' into DFA states, or create a new
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3576 state. Above, we make sure that accepts is not empty. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3577 for (j = 0; j < ndests; ++j)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3578 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3579 bitset intersec; /* Intersection sets, see below. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3580 bitset remains;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3581 /* Flags, see below. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3582 int has_intersec, not_subset, not_consumed;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3583
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3584 /* Optimization, skip if this state doesn't accept the character. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3585 if (type == CHARACTER && !bitset_contain (dests_ch[j], node->opr.c))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3586 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3587
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3588 /* Enumerate the intersection set of this state and `accepts'. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3589 has_intersec = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3590 for (k = 0; k < BITSET_UINTS; ++k)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3591 has_intersec \|= intersec[k] = accepts[k] & dests_ch[j][k];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3592 /* And skip if the intersection set is empty. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3593 if (!has_intersec)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3594 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3595
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3596 /* Then check if this state is a subset of `accepts'. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3597 not_subset = not_consumed = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3598 for (k = 0; k < BITSET_UINTS; ++k)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3599 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3600 not_subset \|= remains[k] = ~accepts[k] & dests_ch[j][k];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3601 not_consumed \|= accepts[k] = accepts[k] & ~dests_ch[j][k];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3602 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3603
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3604 /* If this state isn't a subset of `accepts', create a
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3605 new group state, which has the `remains'. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3606 if (not_subset)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3607 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3608 bitset_copy (dests_ch[ndests], remains);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3609 bitset_copy (dests_ch[j], intersec);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3610 err = re_node_set_init_copy (dests_node + ndests, &dests_node[j]);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3611 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3612 goto error_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3613 ++ndests;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3614 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3615
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3616 /* Put the position in the current group. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3617 result = re_node_set_insert (&dests_node[j], cur_nodes->elems[i]);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3618 if (BE (result < 0, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3619 goto error_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3620
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3621 /* If all characters are consumed, go to next node. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3622 if (!not_consumed)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3623 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3624 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3625 /* Some characters remain, create a new group. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3626 if (j == ndests)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3627 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3628 bitset_copy (dests_ch[ndests], accepts);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3629 err = re_node_set_init_1 (dests_node + ndests, cur_nodes->elems[i]);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3630 if (BE (err != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3631 goto error_return;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3632 ++ndests;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3633 bitset_empty (accepts);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3634 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3635 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3636 return ndests;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3637 error_return:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3638 for (j = 0; j < ndests; ++j)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3639 re_node_set_free (dests_node + j);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3640 return -1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3641 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3642
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3643 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3644 /* Check how many bytes the node `dfa->nodes[node_idx]' accepts.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3645 Return the number of the bytes the node accepts.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3646 STR_IDX is the current index of the input string.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3647
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3648 This function handles the nodes which can accept one character, or
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3649 one collating element like '.', '[a-z]', opposite to the other nodes
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3650 can only accept one byte. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3651
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3652 static int
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	3653 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	3654 check_node_accept_bytes (re_dfa_t *dfa, int node_idx,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	3655 const re_string_t *input, int str_idx)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3656 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3657 const re_token_t *node = dfa->nodes + node_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3658 int char_len, elem_len;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3659 int i;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3660
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3661 if (BE (node->type == OP_UTF8_PERIOD, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3662 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3663 unsigned char c = re_string_byte_at (input, str_idx), d;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3664 if (BE (c < 0xc2, 1))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3665 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3666
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3667 if (str_idx + 2 > input->len)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3668 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3669
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3670 d = re_string_byte_at (input, str_idx + 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3671 if (c < 0xe0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3672 return (d < 0x80 \|\| d > 0xbf) ? 0 : 2;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3673 else if (c < 0xf0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3674 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3675 char_len = 3;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3676 if (c == 0xe0 && d < 0xa0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3677 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3678 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3679 else if (c < 0xf8)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3680 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3681 char_len = 4;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3682 if (c == 0xf0 && d < 0x90)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3683 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3684 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3685 else if (c < 0xfc)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3686 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3687 char_len = 5;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3688 if (c == 0xf8 && d < 0x88)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3689 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3690 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3691 else if (c < 0xfe)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3692 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3693 char_len = 6;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3694 if (c == 0xfc && d < 0x84)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3695 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3696 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3697 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3698 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3699
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3700 if (str_idx + char_len > input->len)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3701 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3702
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3703 for (i = 1; i < char_len; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3704 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3705 d = re_string_byte_at (input, str_idx + i);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3706 if (d < 0x80 \|\| d > 0xbf)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3707 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3708 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3709 return char_len;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3710 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3711
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3712 char_len = re_string_char_size_at (input, str_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3713 if (node->type == OP_PERIOD)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3714 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3715 if (char_len <= 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3716 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3717 /* FIXME: I don't think this if is needed, as both '\n'
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3718 and '\0' are char_len == 1. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3719 /* '.' accepts any one character except the following two cases. */
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	3720 if ((!(dfa->syntax & REG_DOT_NEWLINE) &&
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3721 re_string_byte_at (input, str_idx) == '\n') \|\|
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	3722 ((dfa->syntax & REG_DOT_NOT_NULL) &&
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3723 re_string_byte_at (input, str_idx) == '\0'))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3724 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3725 return char_len;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3726 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3727
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3728 elem_len = re_string_elem_size_at (input, str_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3729 if ((elem_len <= 1 && char_len <= 1) \|\| char_len == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3730 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3731
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3732 if (node->type == COMPLEX_BRACKET)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3733 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3734 const re_charset_t *cset = node->opr.mbcset;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3735 # ifdef _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3736 const unsigned char *pin
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3737 = ((const unsigned char *) re_string_get_buffer (input) + str_idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3738 int j;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3739 uint32_t nrules;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3740 # endif /* _LIBC */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3741 int match_len = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3742 wchar_t wc = ((cset->nranges \|\| cset->nchar_classes \|\| cset->nmbchars)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3743 ? re_string_wchar_at (input, str_idx) : 0);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3744
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3745 /* match with multibyte character? */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3746 for (i = 0; i < cset->nmbchars; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3747 if (wc == cset->mbchars[i])
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3748 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3749 match_len = char_len;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3750 goto check_node_accept_bytes_match;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3751 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3752 /* match with character_class? */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3753 for (i = 0; i < cset->nchar_classes; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3754 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3755 wctype_t wt = cset->char_classes[i];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3756 if (__iswctype (wc, wt))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3757 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3758 match_len = char_len;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3759 goto check_node_accept_bytes_match;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3760 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3761 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3762
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3763 # ifdef _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3764 nrules = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3765 if (nrules != 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3766 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3767 unsigned int in_collseq = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3768 const int32_t table, indirect;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3769 const unsigned char weights, extra;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3770 const char *collseqwc;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3771 int32_t idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3772 /* This #include defines a local function! */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3773 # include <locale/weight.h>
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3774
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3775 /* match with collating_symbol? */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3776 if (cset->ncoll_syms)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3777 extra = (const unsigned char *)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3778 _NL_CURRENT (LC_COLLATE, _NL_COLLATE_SYMB_EXTRAMB);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3779 for (i = 0; i < cset->ncoll_syms; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3780 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3781 const unsigned char *coll_sym = extra + cset->coll_syms[i];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3782 /* Compare the length of input collating element and
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3783 the length of current collating element. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3784 if (*coll_sym != elem_len)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3785 continue;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3786 /* Compare each bytes. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3787 for (j = 0; j < *coll_sym; j++)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3788 if (pin[j] != coll_sym[1 + j])
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3789 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3790 if (j == *coll_sym)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3791 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3792 /* Match if every bytes is equal. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3793 match_len = j;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3794 goto check_node_accept_bytes_match;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3795 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3796 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3797
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3798 if (cset->nranges)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3799 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3800 if (elem_len <= char_len)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3801 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3802 collseqwc = _NL_CURRENT (LC_COLLATE, _NL_COLLATE_COLLSEQWC);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3803 in_collseq = __collseq_table_lookup (collseqwc, wc);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3804 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3805 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3806 in_collseq = find_collation_sequence_value (pin, elem_len);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3807 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3808 /* match with range expression? */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3809 for (i = 0; i < cset->nranges; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3810 if (cset->range_starts[i] <= in_collseq
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3811 && in_collseq <= cset->range_ends[i])
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3812 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3813 match_len = elem_len;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3814 goto check_node_accept_bytes_match;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3815 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3816
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3817 /* match with equivalence_class? */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3818 if (cset->nequiv_classes)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3819 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3820 const unsigned char *cp = pin;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3821 table = (const int32_t *)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3822 _NL_CURRENT (LC_COLLATE, _NL_COLLATE_TABLEMB);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3823 weights = (const unsigned char *)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3824 _NL_CURRENT (LC_COLLATE, _NL_COLLATE_WEIGHTMB);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3825 extra = (const unsigned char *)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3826 _NL_CURRENT (LC_COLLATE, _NL_COLLATE_EXTRAMB);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3827 indirect = (const int32_t *)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3828 _NL_CURRENT (LC_COLLATE, _NL_COLLATE_INDIRECTMB);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3829 idx = findidx (&cp);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3830 if (idx > 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3831 for (i = 0; i < cset->nequiv_classes; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3832 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3833 int32_t equiv_class_idx = cset->equiv_classes[i];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3834 size_t weight_len = weights[idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3835 if (weight_len == weights[equiv_class_idx])
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3836 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3837 int cnt = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3838 while (cnt <= weight_len
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3839 && (weights[equiv_class_idx + 1 + cnt]
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3840 == weights[idx + 1 + cnt]))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3841 ++cnt;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3842 if (cnt > weight_len)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3843 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3844 match_len = elem_len;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3845 goto check_node_accept_bytes_match;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3846 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3847 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3848 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3849 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3850 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3851 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3852 # endif /* _LIBC */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3853 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3854 /* match with range expression? */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3855 #if __GNUC__ >= 2
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3856 wchar_t cmp_buf[] = {L'\0', L'\0', wc, L'\0', L'\0', L'\0'};
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3857 #else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3858 wchar_t cmp_buf[] = {L'\0', L'\0', L'\0', L'\0', L'\0', L'\0'};
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3859 cmp_buf[2] = wc;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3860 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3861 for (i = 0; i < cset->nranges; ++i)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3862 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3863 cmp_buf[0] = cset->range_starts[i];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3864 cmp_buf[4] = cset->range_ends[i];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3865 if (wcscoll (cmp_buf, cmp_buf + 2) <= 0
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3866 && wcscoll (cmp_buf + 2, cmp_buf + 4) <= 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3867 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3868 match_len = char_len;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3869 goto check_node_accept_bytes_match;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3870 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3871 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3872 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3873 check_node_accept_bytes_match:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3874 if (!cset->non_match)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3875 return match_len;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3876 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3877 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3878 if (match_len > 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3879 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3880 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3881 return (elem_len > char_len) ? elem_len : char_len;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3882 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3883 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3884 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3885 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3886
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3887 # ifdef _LIBC
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3888 static unsigned int
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3889 find_collation_sequence_value (mbs, mbs_len)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3890 const unsigned char *mbs;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3891 size_t mbs_len;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3892 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3893 uint32_t nrules = _NL_CURRENT_WORD (LC_COLLATE, _NL_COLLATE_NRULES);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3894 if (nrules == 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3895 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3896 if (mbs_len == 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3897 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3898 /* No valid character. Match it as a single byte character. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3899 const unsigned char collseq = (const unsigned char )
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3900 _NL_CURRENT (LC_COLLATE, _NL_COLLATE_COLLSEQMB);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3901 return collseq[mbs[0]];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3902 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3903 return UINT_MAX;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3904 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3905 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3906 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3907 int32_t idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3908 const unsigned char extra = (const unsigned char )
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3909 _NL_CURRENT (LC_COLLATE, _NL_COLLATE_SYMB_EXTRAMB);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3910 int32_t extrasize = (const unsigned char *)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3911 _NL_CURRENT (LC_COLLATE, _NL_COLLATE_SYMB_EXTRAMB + 1) - extra;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3912
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3913 for (idx = 0; idx < extrasize;)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3914 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3915 int mbs_cnt, found = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3916 int32_t elem_mbs_len;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3917 /* Skip the name of collating element name. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3918 idx = idx + extra[idx] + 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3919 elem_mbs_len = extra[idx++];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3920 if (mbs_len == elem_mbs_len)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3921 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3922 for (mbs_cnt = 0; mbs_cnt < elem_mbs_len; ++mbs_cnt)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3923 if (extra[idx + mbs_cnt] != mbs[mbs_cnt])
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3924 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3925 if (mbs_cnt == elem_mbs_len)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3926 /* Found the entry. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3927 found = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3928 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3929 /* Skip the byte sequence of the collating element. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3930 idx += elem_mbs_len;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3931 /* Adjust for the alignment. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3932 idx = (idx + 3) & ~3;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3933 /* Skip the collation sequence value. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3934 idx += sizeof (uint32_t);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3935 /* Skip the wide char sequence of the collating element. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3936 idx = idx + sizeof (uint32_t) * (extra[idx] + 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3937 /* If we found the entry, return the sequence value. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3938 if (found)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3939 return (uint32_t ) (extra + idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3940 /* Skip the collation sequence value. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3941 idx += sizeof (uint32_t);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3942 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3943 return UINT_MAX;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3944 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3945 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3946 # endif /* _LIBC */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3947 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3948
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3949 /* Check whether the node accepts the byte which is IDX-th
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3950 byte of the INPUT. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3951
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3952 static int
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	3953 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	3954 check_node_accept (const re_match_context_t mctx, const re_token_t node,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	3955 int idx)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3956 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3957 unsigned char ch;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3958 ch = re_string_byte_at (&mctx->input, idx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3959 switch (node->type)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3960 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3961 case CHARACTER:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3962 if (node->opr.c != ch)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3963 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3964 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3965
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3966 case SIMPLE_BRACKET:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3967 if (!bitset_contain (node->opr.sbcset, ch))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3968 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3969 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3970
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3971 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3972 case OP_UTF8_PERIOD:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3973 if (ch >= 0x80)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3974 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3975 /* FALLTHROUGH */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3976 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3977 case OP_PERIOD:
6101 c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	3978 if ((ch == '\n' && !(mctx->dfa->syntax & REG_DOT_NEWLINE))
c9bcd4ba6b3f * config/srclist.txt: Add glibc bug 1237. Paul Eggert <eggert@cs.ucla.edu> parents: 6084 diff changeset	3979 \|\| (ch == '\0' && (mctx->dfa->syntax & REG_DOT_NOT_NULL)))
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3980 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3981 break;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3982
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3983 default:
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3984 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3985 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3986
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3987 if (node->constraint)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3988 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3989 /* The node has constraints. Check whether the current context
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3990 satisfies the constraints. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3991 unsigned int context = re_string_context_at (&mctx->input, idx,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3992 mctx->eflags);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3993 if (NOT_SATISFY_NEXT_CONSTRAINT (node->constraint, context))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3994 return 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3995 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3996
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3997 return 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3998 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	3999
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4000 /* Extend the buffers, if the buffers have run out. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4001
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4002 static reg_errcode_t
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	4003 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	4004 extend_buffers (re_match_context_t *mctx)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4005 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4006 reg_errcode_t ret;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4007 re_string_t *pstr = &mctx->input;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4008
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4009 /* Double the lengthes of the buffers. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4010 ret = re_string_realloc_buffers (pstr, pstr->bufs_len * 2);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4011 if (BE (ret != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4012 return ret;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4013
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4014 if (mctx->state_log != NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4015 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4016 /* And double the length of state_log. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4017 /* XXX We have no indication of the size of this buffer. If this
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4018 allocation fail we have no indication that the state_log array
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4019 does not have the right size. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4020 re_dfastate_t *new_array = re_realloc (mctx->state_log, re_dfastate_t ,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4021 pstr->bufs_len + 1);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4022 if (BE (new_array == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4023 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4024 mctx->state_log = new_array;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4025 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4026
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4027 /* Then reconstruct the buffers. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4028 if (pstr->icase)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4029 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4030 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4031 if (pstr->mb_cur_max > 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4032 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4033 ret = build_wcs_upper_buffer (pstr);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4034 if (BE (ret != REG_NOERROR, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4035 return ret;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4036 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4037 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4038 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4039 build_upper_buffer (pstr);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4040 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4041 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4042 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4043 #ifdef RE_ENABLE_I18N
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4044 if (pstr->mb_cur_max > 1)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4045 build_wcs_buffer (pstr);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4046 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4047 #endif /* RE_ENABLE_I18N */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4048 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4049 if (pstr->trans != NULL)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4050 re_string_translate_buffer (pstr);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4051 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4052 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4053 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4054 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4055
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4056
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4057 /* Functions for matching context. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4058
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4059 /* Initialize MCTX. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4060
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4061 static reg_errcode_t
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	4062 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	4063 match_ctx_init (re_match_context_t *mctx, int eflags, int n)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4064 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4065 mctx->eflags = eflags;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4066 mctx->match_last = -1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4067 if (n > 0)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4068 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4069 mctx->bkref_ents = re_malloc (struct re_backref_cache_entry, n);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4070 mctx->sub_tops = re_malloc (re_sub_match_top_t *, n);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4071 if (BE (mctx->bkref_ents == NULL \|\| mctx->sub_tops == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4072 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4073 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4074 /* Already zero-ed by the caller.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4075 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4076 mctx->bkref_ents = NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4077 mctx->nbkref_ents = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4078 mctx->nsub_tops = 0; */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4079 mctx->abkref_ents = n;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4080 mctx->max_mb_elem_len = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4081 mctx->asub_tops = n;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4082 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4083 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4084
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4085 /* Clean the entries which depend on the current input in MCTX.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4086 This function must be invoked when the matcher changes the start index
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4087 of the input, or changes the input string. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4088
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4089 static void
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	4090 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	4091 match_ctx_clean (re_match_context_t *mctx)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4092 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4093 int st_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4094 for (st_idx = 0; st_idx < mctx->nsub_tops; ++st_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4095 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4096 int sl_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4097 re_sub_match_top_t *top = mctx->sub_tops[st_idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4098 for (sl_idx = 0; sl_idx < top->nlasts; ++sl_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4099 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4100 re_sub_match_last_t *last = top->lasts[sl_idx];
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4101 re_free (last->path.array);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4102 re_free (last);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4103 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4104 re_free (top->lasts);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4105 if (top->path)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4106 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4107 re_free (top->path->array);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4108 re_free (top->path);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4109 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4110 free (top);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4111 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4112
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4113 mctx->nsub_tops = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4114 mctx->nbkref_ents = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4115 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4116
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4117 /* Free all the memory associated with MCTX. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4118
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4119 static void
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	4120 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	4121 match_ctx_free (re_match_context_t *mctx)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4122 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4123 /* First, free all the memory associated with MCTX->SUB_TOPS. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4124 match_ctx_clean (mctx);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4125 re_free (mctx->sub_tops);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4126 re_free (mctx->bkref_ents);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4127 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4128
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4129 /* Add a new backreference entry to MCTX.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4130 Note that we assume that caller never call this function with duplicate
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4131 entry, and call with STR_IDX which isn't smaller than any existing entry.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4132 */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4133
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4134 static reg_errcode_t
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	4135 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	4136 match_ctx_add_entry (re_match_context_t *mctx, int node, int str_idx,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	4137 int from, int to)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4138 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4139 if (mctx->nbkref_ents >= mctx->abkref_ents)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4140 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4141 struct re_backref_cache_entry* new_entry;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4142 new_entry = re_realloc (mctx->bkref_ents, struct re_backref_cache_entry,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4143 mctx->abkref_ents * 2);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4144 if (BE (new_entry == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4145 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4146 re_free (mctx->bkref_ents);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4147 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4148 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4149 mctx->bkref_ents = new_entry;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4150 memset (mctx->bkref_ents + mctx->nbkref_ents, '\0',
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4151 sizeof (struct re_backref_cache_entry) * mctx->abkref_ents);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4152 mctx->abkref_ents *= 2;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4153 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4154 if (mctx->nbkref_ents > 0
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4155 && mctx->bkref_ents[mctx->nbkref_ents - 1].str_idx == str_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4156 mctx->bkref_ents[mctx->nbkref_ents - 1].more = 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4157
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4158 mctx->bkref_ents[mctx->nbkref_ents].node = node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4159 mctx->bkref_ents[mctx->nbkref_ents].str_idx = str_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4160 mctx->bkref_ents[mctx->nbkref_ents].subexp_from = from;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4161 mctx->bkref_ents[mctx->nbkref_ents].subexp_to = to;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4162
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4163 /* This is a cache that saves negative results of check_dst_limits_calc_pos.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4164 If bit N is clear, means that this entry won't epsilon-transition to
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4165 an OP_OPEN_SUBEXP or OP_CLOSE_SUBEXP for the N+1-th subexpression. If
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4166 it is set, check_dst_limits_calc_pos_1 will recurse and try to find one
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4167 such node.
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4168
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4169 A backreference does not epsilon-transition unless it is empty, so set
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4170 to all zeros if FROM != TO. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4171 mctx->bkref_ents[mctx->nbkref_ents].eps_reachable_subexps_map
6171 5862ee08bfc1 * lib/regcomp.c (re_compile_fastmap_iter, init_dfa, init_word_char): Paul Eggert <eggert@cs.ucla.edu> parents: 6125 diff changeset	4172 = (from == to ? -1 : 0);
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4173
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4174 mctx->bkref_ents[mctx->nbkref_ents++].more = 0;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4175 if (mctx->max_mb_elem_len < to - from)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4176 mctx->max_mb_elem_len = to - from;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4177 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4178 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4179
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4180 /* Search for the first entry which has the same str_idx, or -1 if none is
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4181 found. Note that MCTX->BKREF_ENTS is already sorted by MCTX->STR_IDX. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4182
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4183 static int
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	4184 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	4185 search_cur_bkref_entry (re_match_context_t *mctx, int str_idx)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4186 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4187 int left, right, mid, last;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4188 last = right = mctx->nbkref_ents;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4189 for (left = 0; left < right;)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4190 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4191 mid = (left + right) / 2;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4192 if (mctx->bkref_ents[mid].str_idx < str_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4193 left = mid + 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4194 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4195 right = mid;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4196 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4197 if (left < last && mctx->bkref_ents[left].str_idx == str_idx)
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4198 return left;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4199 else
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4200 return -1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4201 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4202
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4203 /* Register the node NODE, whose type is OP_OPEN_SUBEXP, and which matches
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4204 at STR_IDX. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4205
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4206 static reg_errcode_t
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	4207 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	4208 match_ctx_add_subtop (re_match_context_t *mctx, int node, int str_idx)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4209 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4210 #ifdef DEBUG
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4211 assert (mctx->sub_tops != NULL);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4212 assert (mctx->asub_tops > 0);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4213 #endif
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4214 if (BE (mctx->nsub_tops == mctx->asub_tops, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4215 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4216 int new_asub_tops = mctx->asub_tops * 2;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4217 re_sub_match_top_t **new_array = re_realloc (mctx->sub_tops,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4218 re_sub_match_top_t *,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4219 new_asub_tops);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4220 if (BE (new_array == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4221 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4222 mctx->sub_tops = new_array;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4223 mctx->asub_tops = new_asub_tops;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4224 }
6119 c3bf2ea44695 Make regex safe for g++. This fixes one real bug (an "err" Paul Eggert <eggert@cs.ucla.edu> parents: 6101 diff changeset	4225 mctx->sub_tops[mctx->nsub_tops] = re_calloc (re_sub_match_top_t, 1);
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4226 if (BE (mctx->sub_tops[mctx->nsub_tops] == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4227 return REG_ESPACE;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4228 mctx->sub_tops[mctx->nsub_tops]->node = node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4229 mctx->sub_tops[mctx->nsub_tops++]->str_idx = str_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4230 return REG_NOERROR;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4231 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4232
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4233 /* Register the node NODE, whose type is OP_CLOSE_SUBEXP, and which matches
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4234 at STR_IDX, whose corresponding OP_OPEN_SUBEXP is SUB_TOP. */
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4235
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4236 static re_sub_match_last_t *
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	4237 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	4238 match_ctx_add_sublast (re_sub_match_top_t *subtop, int node, int str_idx)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4239 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4240 re_sub_match_last_t *new_entry;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4241 if (BE (subtop->nlasts == subtop->alasts, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4242 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4243 int new_alasts = 2 * subtop->alasts + 1;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4244 re_sub_match_last_t **new_array = re_realloc (subtop->lasts,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4245 re_sub_match_last_t *,
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4246 new_alasts);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4247 if (BE (new_array == NULL, 0))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4248 return NULL;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4249 subtop->lasts = new_array;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4250 subtop->alasts = new_alasts;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4251 }
6119 c3bf2ea44695 Make regex safe for g++. This fixes one real bug (an "err" Paul Eggert <eggert@cs.ucla.edu> parents: 6101 diff changeset	4252 new_entry = re_calloc (re_sub_match_last_t, 1);
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4253 if (BE (new_entry != NULL, 1))
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4254 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4255 subtop->lasts[subtop->nlasts] = new_entry;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4256 new_entry->node = node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4257 new_entry->str_idx = str_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4258 ++subtop->nlasts;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4259 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4260 return new_entry;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4261 }
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4262
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4263 static void
6076 e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	4264 internal_function
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	4265 sift_ctx_init (re_sift_context_t *sctx,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	4266 re_dfastate_t **sifted_sts,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	4267 re_dfastate_t **limited_sts,
e2dd51f6e259 * config/srclist.txt: Add glibc bugs 1220, 1221, 1222. Paul Eggert <eggert@cs.ucla.edu> parents: 6069 diff changeset	4268 int last_node, int last_str_idx)
5968 541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4269 {
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4270 sctx->sifted_states = sifted_sts;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4271 sctx->limited_states = limited_sts;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4272 sctx->last_node = last_node;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4273 sctx->last_str_idx = last_str_idx;
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4274 re_node_set_init_empty (&sctx->limits);
541fed6ae301 * modules/regex (Files): Add lib/regex_internal.c, Paul Eggert <eggert@cs.ucla.edu> parents: diff changeset	4275 }

Mercurial > hg > octave-kai > gnulib-hg

annotate lib/regexec.c @ 6173:0728607db20f