Mercurial > hg > octave-kai > gnulib-hg
annotate regex.c @ 1157:5aa89bba935d
(GROW_FAIL_STACK): Fix previous change:
update (fail_stack).size properly.
| author | Karl Heuer <kwzh@gnu.org> |
|---|---|
| date | Tue, 09 Dec 1997 23:04:38 +0000 |
| parents | 8e1cbb305ddc |
| children | 282562802f46 |
| rev | line source |
|---|---|
| 679 | 1 /* Extended regular expression matching and search library, version |
| 2 0.12. (Implements POSIX draft P10003.2/D11.2, except for | |
| 2 | 3 internationalization features.) |
| 4 | |
| 939 | 5 Copyright (C) 1993, 1994, 1995, 1996, 1997 Free Software Foundation, Inc. |
| 2 | 6 |
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7 This program is free software; you can redistribute it and/or modify |
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8 it under the terms of the GNU General Public License as published by |
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9 the Free Software Foundation; either version 2, or (at your option) |
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10 any later version. |
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11 |
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12 This program is distributed in the hope that it will be useful, |
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13 but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 941 | 14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
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15 GNU General Public License for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with this program; if not, write to the Free Software |
| 542 | 19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
| 941 | 20 USA. */ |
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21 |
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22 /* AIX requires this to be the first thing in the file. */ |
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23 #if defined (_AIX) && !defined (REGEX_MALLOC) |
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24 #pragma alloca |
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25 #endif |
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26 |
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27 #undef _GNU_SOURCE |
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28 #define _GNU_SOURCE |
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29 |
| 941 | 30 /* Converts the pointer to the char to BEG-based offset from the start. */ |
| 31 #define PTR_TO_OFFSET(d) \ | |
| 939 | 32 POS_AS_IN_BUFFER (MATCHING_IN_FIRST_STRING \ |
| 33 ? (d) - string1 : (d) - (string2 - size1)) | |
| 34 #define POS_AS_IN_BUFFER(p) ((p) + 1) | |
| 35 | |
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36 #ifdef HAVE_CONFIG_H |
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37 #include <config.h> |
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38 #endif |
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39 |
| 941 | 40 /* We need this for `regex.h', and perhaps for the Emacs include files. */ |
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41 #include <sys/types.h> |
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42 |
| 941 | 43 /* This is for other GNU distributions with internationalized messages. */ |
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44 #if HAVE_LIBINTL_H || defined (_LIBC) |
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45 # include <libintl.h> |
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46 #else |
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47 # define gettext(msgid) (msgid) |
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48 #endif |
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49 |
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50 #ifndef gettext_noop |
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51 /* This define is so xgettext can find the internationalizable |
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52 strings. */ |
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53 #define gettext_noop(String) String |
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54 #endif |
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55 |
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56 /* The `emacs' switch turns on certain matching commands |
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57 that make sense only in Emacs. */ |
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58 #ifdef emacs |
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59 |
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60 #include "lisp.h" |
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61 #include "buffer.h" |
| 939 | 62 |
| 63 /* Make syntax table lookup grant data in gl_state. */ | |
| 64 #define SYNTAX_ENTRY_VIA_PROPERTY | |
| 65 | |
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66 #include "syntax.h" |
| 939 | 67 #include "charset.h" |
| 68 #include "category.h" | |
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69 |
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70 #define malloc xmalloc |
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71 #define free xfree |
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72 |
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73 #else /* not emacs */ |
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74 |
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75 /* If we are not linking with Emacs proper, |
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76 we can't use the relocating allocator |
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77 even if config.h says that we can. */ |
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78 #undef REL_ALLOC |
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79 |
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80 #if defined (STDC_HEADERS) || defined (_LIBC) |
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81 #include <stdlib.h> |
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82 #else |
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83 char *malloc (); |
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84 char *realloc (); |
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85 #endif |
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86 |
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87 /* When used in Emacs's lib-src, we need to get bzero and bcopy somehow. |
| 941 | 88 If nothing else has been done, use the method below. */ |
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89 #ifdef INHIBIT_STRING_HEADER |
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90 #if !(defined (HAVE_BZERO) && defined (HAVE_BCOPY)) |
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91 #if !defined (bzero) && !defined (bcopy) |
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92 #undef INHIBIT_STRING_HEADER |
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93 #endif |
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94 #endif |
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95 #endif |
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96 |
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97 /* This is the normal way of making sure we have a bcopy and a bzero. |
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98 This is used in most programs--a few other programs avoid this |
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99 by defining INHIBIT_STRING_HEADER. */ |
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100 #ifndef INHIBIT_STRING_HEADER |
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101 #if defined (HAVE_STRING_H) || defined (STDC_HEADERS) || defined (_LIBC) |
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102 #include <string.h> |
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103 #ifndef bcmp |
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104 #define bcmp(s1, s2, n) memcmp ((s1), (s2), (n)) |
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105 #endif |
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106 #ifndef bcopy |
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107 #define bcopy(s, d, n) memcpy ((d), (s), (n)) |
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108 #endif |
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109 #ifndef bzero |
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110 #define bzero(s, n) memset ((s), 0, (n)) |
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111 #endif |
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112 #else |
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113 #include <strings.h> |
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114 #endif |
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115 #endif |
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116 |
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117 /* Define the syntax stuff for \<, \>, etc. */ |
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118 |
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119 /* This must be nonzero for the wordchar and notwordchar pattern |
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120 commands in re_match_2. */ |
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121 #ifndef Sword |
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122 #define Sword 1 |
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123 #endif |
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124 |
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125 #ifdef SWITCH_ENUM_BUG |
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126 #define SWITCH_ENUM_CAST(x) ((int)(x)) |
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127 #else |
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128 #define SWITCH_ENUM_CAST(x) (x) |
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129 #endif |
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130 |
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131 #ifdef SYNTAX_TABLE |
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132 |
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133 extern char *re_syntax_table; |
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134 |
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135 #else /* not SYNTAX_TABLE */ |
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136 |
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137 /* How many characters in the character set. */ |
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138 #define CHAR_SET_SIZE 256 |
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139 |
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140 static char re_syntax_table[CHAR_SET_SIZE]; |
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141 |
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142 static void |
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143 init_syntax_once () |
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144 { |
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145 register int c; |
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146 static int done = 0; |
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147 |
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148 if (done) |
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149 return; |
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150 |
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151 bzero (re_syntax_table, sizeof re_syntax_table); |
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152 |
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153 for (c = 'a'; c <= 'z'; c++) |
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154 re_syntax_table[c] = Sword; |
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155 |
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156 for (c = 'A'; c <= 'Z'; c++) |
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157 re_syntax_table[c] = Sword; |
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158 |
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159 for (c = '0'; c <= '9'; c++) |
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160 re_syntax_table[c] = Sword; |
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161 |
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162 re_syntax_table['_'] = Sword; |
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163 |
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164 done = 1; |
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165 } |
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166 |
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167 #endif /* not SYNTAX_TABLE */ |
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168 |
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169 #define SYNTAX(c) re_syntax_table[c] |
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170 |
| 939 | 171 /* Dummy macro for non emacs environments. */ |
| 172 #define BASE_LEADING_CODE_P(c) (0) | |
| 173 #define WORD_BOUNDARY_P(c1, c2) (0) | |
| 174 #define CHAR_HEAD_P(p) (1) | |
| 175 #define SINGLE_BYTE_CHAR_P(c) (1) | |
| 176 #define SAME_CHARSET_P(c1, c2) (1) | |
| 177 #define MULTIBYTE_FORM_LENGTH(p, s) (1) | |
| 178 #define STRING_CHAR(p, s) (*(p)) | |
| 179 #define STRING_CHAR_AND_LENGTH(p, s, actual_len) ((actual_len) = 1, *(p)) | |
| 180 #define GET_CHAR_AFTER_2(c, p, str1, end1, str2, end2) \ | |
| 181 (c = ((p) == (end1) ? *(str2) : *(p))) | |
| 182 #define GET_CHAR_BEFORE_2(c, p, str1, end1, str2, end2) \ | |
| 183 (c = ((p) == (str2) ? *((end1) - 1) : *((p) - 1))) | |
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184 #endif /* not emacs */ |
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185 |
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186 /* Get the interface, including the syntax bits. */ |
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187 #include "regex.h" |
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188 |
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189 /* isalpha etc. are used for the character classes. */ |
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190 #include <ctype.h> |
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191 |
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192 /* Jim Meyering writes: |
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193 |
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194 "... Some ctype macros are valid only for character codes that |
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195 isascii says are ASCII (SGI's IRIX-4.0.5 is one such system --when |
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196 using /bin/cc or gcc but without giving an ansi option). So, all |
| 941 | 197 ctype uses should be through macros like ISPRINT... If |
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198 STDC_HEADERS is defined, then autoconf has verified that the ctype |
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199 macros don't need to be guarded with references to isascii. ... |
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200 Defining isascii to 1 should let any compiler worth its salt |
| 941 | 201 eliminate the && through constant folding." */ |
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202 |
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203 #if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII)) |
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204 #define ISASCII(c) 1 |
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205 #else |
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206 #define ISASCII(c) isascii(c) |
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207 #endif |
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208 |
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209 #ifdef isblank |
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210 #define ISBLANK(c) (ISASCII (c) && isblank (c)) |
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211 #else |
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212 #define ISBLANK(c) ((c) == ' ' || (c) == '\t') |
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213 #endif |
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214 #ifdef isgraph |
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215 #define ISGRAPH(c) (ISASCII (c) && isgraph (c)) |
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216 #else |
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217 #define ISGRAPH(c) (ISASCII (c) && isprint (c) && !isspace (c)) |
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218 #endif |
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219 |
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220 #define ISPRINT(c) (ISASCII (c) && isprint (c)) |
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221 #define ISDIGIT(c) (ISASCII (c) && isdigit (c)) |
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222 #define ISALNUM(c) (ISASCII (c) && isalnum (c)) |
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223 #define ISALPHA(c) (ISASCII (c) && isalpha (c)) |
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224 #define ISCNTRL(c) (ISASCII (c) && iscntrl (c)) |
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225 #define ISLOWER(c) (ISASCII (c) && islower (c)) |
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226 #define ISPUNCT(c) (ISASCII (c) && ispunct (c)) |
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227 #define ISSPACE(c) (ISASCII (c) && isspace (c)) |
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228 #define ISUPPER(c) (ISASCII (c) && isupper (c)) |
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229 #define ISXDIGIT(c) (ISASCII (c) && isxdigit (c)) |
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230 |
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231 #ifndef NULL |
| 447 | 232 #define NULL (void *)0 |
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233 #endif |
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234 |
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235 /* We remove any previous definition of `SIGN_EXTEND_CHAR', |
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236 since ours (we hope) works properly with all combinations of |
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237 machines, compilers, `char' and `unsigned char' argument types. |
| 941 | 238 (Per Bothner suggested the basic approach.) */ |
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239 #undef SIGN_EXTEND_CHAR |
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240 #if __STDC__ |
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241 #define SIGN_EXTEND_CHAR(c) ((signed char) (c)) |
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242 #else /* not __STDC__ */ |
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243 /* As in Harbison and Steele. */ |
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244 #define SIGN_EXTEND_CHAR(c) ((((unsigned char) (c)) ^ 128) - 128) |
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245 #endif |
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246 |
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247 /* Should we use malloc or alloca? If REGEX_MALLOC is not defined, we |
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248 use `alloca' instead of `malloc'. This is because using malloc in |
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249 re_search* or re_match* could cause memory leaks when C-g is used in |
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250 Emacs; also, malloc is slower and causes storage fragmentation. On |
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251 the other hand, malloc is more portable, and easier to debug. |
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252 |
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253 Because we sometimes use alloca, some routines have to be macros, |
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254 not functions -- `alloca'-allocated space disappears at the end of the |
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255 function it is called in. */ |
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256 |
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257 #ifdef REGEX_MALLOC |
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258 |
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259 #define REGEX_ALLOCATE malloc |
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260 #define REGEX_REALLOCATE(source, osize, nsize) realloc (source, nsize) |
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261 #define REGEX_FREE free |
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262 |
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263 #else /* not REGEX_MALLOC */ |
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264 |
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265 /* Emacs already defines alloca, sometimes. */ |
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266 #ifndef alloca |
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267 |
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268 /* Make alloca work the best possible way. */ |
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269 #ifdef __GNUC__ |
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270 #define alloca __builtin_alloca |
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271 #else /* not __GNUC__ */ |
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272 #if HAVE_ALLOCA_H |
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273 #include <alloca.h> |
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274 #else /* not __GNUC__ or HAVE_ALLOCA_H */ |
| 503 | 275 #if 0 /* It is a bad idea to declare alloca. We always cast the result. */ |
| 941 | 276 #ifndef _AIX /* Already did AIX, up at the top. */ |
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277 char *alloca (); |
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278 #endif /* not _AIX */ |
| 503 | 279 #endif |
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280 #endif /* not HAVE_ALLOCA_H */ |
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281 #endif /* not __GNUC__ */ |
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282 |
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283 #endif /* not alloca */ |
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284 |
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285 #define REGEX_ALLOCATE alloca |
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286 |
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287 /* Assumes a `char *destination' variable. */ |
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288 #define REGEX_REALLOCATE(source, osize, nsize) \ |
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289 (destination = (char *) alloca (nsize), \ |
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290 bcopy (source, destination, osize), \ |
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291 destination) |
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292 |
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293 /* No need to do anything to free, after alloca. */ |
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294 #define REGEX_FREE(arg) ((void)0) /* Do nothing! But inhibit gcc warning. */ |
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295 |
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296 #endif /* not REGEX_MALLOC */ |
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297 |
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298 /* Define how to allocate the failure stack. */ |
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299 |
| 463 | 300 #if defined (REL_ALLOC) && defined (REGEX_MALLOC) |
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301 |
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302 #define REGEX_ALLOCATE_STACK(size) \ |
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303 r_alloc (&failure_stack_ptr, (size)) |
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304 #define REGEX_REALLOCATE_STACK(source, osize, nsize) \ |
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305 r_re_alloc (&failure_stack_ptr, (nsize)) |
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306 #define REGEX_FREE_STACK(ptr) \ |
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307 r_alloc_free (&failure_stack_ptr) |
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308 |
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309 #else /* not using relocating allocator */ |
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310 |
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311 #ifdef REGEX_MALLOC |
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312 |
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313 #define REGEX_ALLOCATE_STACK malloc |
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314 #define REGEX_REALLOCATE_STACK(source, osize, nsize) realloc (source, nsize) |
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315 #define REGEX_FREE_STACK free |
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316 |
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317 #else /* not REGEX_MALLOC */ |
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318 |
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319 #define REGEX_ALLOCATE_STACK alloca |
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320 |
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321 #define REGEX_REALLOCATE_STACK(source, osize, nsize) \ |
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322 REGEX_REALLOCATE (source, osize, nsize) |
| 941 | 323 /* No need to explicitly free anything. */ |
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324 #define REGEX_FREE_STACK(arg) |
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325 |
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326 #endif /* not REGEX_MALLOC */ |
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327 #endif /* not using relocating allocator */ |
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328 |
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329 |
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330 /* True if `size1' is non-NULL and PTR is pointing anywhere inside |
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331 `string1' or just past its end. This works if PTR is NULL, which is |
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332 a good thing. */ |
| 941 | 333 #define FIRST_STRING_P(ptr) \ |
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334 (size1 && string1 <= (ptr) && (ptr) <= string1 + size1) |
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335 |
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336 /* (Re)Allocate N items of type T using malloc, or fail. */ |
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337 #define TALLOC(n, t) ((t *) malloc ((n) * sizeof (t))) |
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338 #define RETALLOC(addr, n, t) ((addr) = (t *) realloc (addr, (n) * sizeof (t))) |
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339 #define RETALLOC_IF(addr, n, t) \ |
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340 if (addr) RETALLOC((addr), (n), t); else (addr) = TALLOC ((n), t) |
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341 #define REGEX_TALLOC(n, t) ((t *) REGEX_ALLOCATE ((n) * sizeof (t))) |
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342 |
| 941 | 343 #define BYTEWIDTH 8 /* In bits. */ |
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344 |
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345 #define STREQ(s1, s2) ((strcmp (s1, s2) == 0)) |
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346 |
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347 #undef MAX |
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348 #undef MIN |
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349 #define MAX(a, b) ((a) > (b) ? (a) : (b)) |
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350 #define MIN(a, b) ((a) < (b) ? (a) : (b)) |
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351 |
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352 typedef char boolean; |
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353 #define false 0 |
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354 #define true 1 |
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355 |
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356 static int re_match_2_internal (); |
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357 |
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358 /* These are the command codes that appear in compiled regular |
| 941 | 359 expressions. Some opcodes are followed by argument bytes. A |
|
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360 command code can specify any interpretation whatsoever for its |
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361 arguments. Zero bytes may appear in the compiled regular expression. */ |
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362 |
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363 typedef enum |
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364 { |
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365 no_op = 0, |
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366 |
| 941 | 367 /* Succeed right away--no more backtracking. */ |
|
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368 succeed, |
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369 |
| 941 | 370 /* Followed by one byte giving n, then by n literal bytes. */ |
|
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371 exactn, |
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372 |
| 941 | 373 /* Matches any (more or less) character. */ |
|
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374 anychar, |
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375 |
| 941 | 376 /* Matches any one char belonging to specified set. First |
| 377 following byte is number of bitmap bytes. Then come bytes | |
| 378 for a bitmap saying which chars are in. Bits in each byte | |
| 379 are ordered low-bit-first. A character is in the set if its | |
| 380 bit is 1. A character too large to have a bit in the map is | |
| 381 automatically not in the set. */ | |
|
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382 charset, |
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383 |
| 941 | 384 /* Same parameters as charset, but match any character that is |
| 385 not one of those specified. */ | |
|
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386 charset_not, |
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387 |
| 941 | 388 /* Start remembering the text that is matched, for storing in a |
| 389 register. Followed by one byte with the register number, in | |
| 390 the range 0 to one less than the pattern buffer's re_nsub | |
| 391 field. Then followed by one byte with the number of groups | |
| 392 inner to this one. (This last has to be part of the | |
| 393 start_memory only because we need it in the on_failure_jump | |
| 394 of re_match_2.) */ | |
|
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395 start_memory, |
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396 |
| 941 | 397 /* Stop remembering the text that is matched and store it in a |
| 398 memory register. Followed by one byte with the register | |
| 399 number, in the range 0 to one less than `re_nsub' in the | |
| 400 pattern buffer, and one byte with the number of inner groups, | |
| 401 just like `start_memory'. (We need the number of inner | |
| 402 groups here because we don't have any easy way of finding the | |
| 403 corresponding start_memory when we're at a stop_memory.) */ | |
|
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404 stop_memory, |
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405 |
| 941 | 406 /* Match a duplicate of something remembered. Followed by one |
| 407 byte containing the register number. */ | |
|
441
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408 duplicate, |
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409 |
| 941 | 410 /* Fail unless at beginning of line. */ |
|
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411 begline, |
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412 |
| 941 | 413 /* Fail unless at end of line. */ |
|
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414 endline, |
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415 |
| 941 | 416 /* Succeeds if at beginning of buffer (if emacs) or at beginning |
| 417 of string to be matched (if not). */ | |
|
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418 begbuf, |
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419 |
| 941 | 420 /* Analogously, for end of buffer/string. */ |
|
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421 endbuf, |
|
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422 |
| 941 | 423 /* Followed by two byte relative address to which to jump. */ |
|
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424 jump, |
|
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425 |
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426 /* Same as jump, but marks the end of an alternative. */ |
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427 jump_past_alt, |
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428 |
| 941 | 429 /* Followed by two-byte relative address of place to resume at |
| 430 in case of failure. */ | |
|
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431 on_failure_jump, |
|
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432 |
| 941 | 433 /* Like on_failure_jump, but pushes a placeholder instead of the |
| 434 current string position when executed. */ | |
|
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435 on_failure_keep_string_jump, |
|
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436 |
| 941 | 437 /* Throw away latest failure point and then jump to following |
| 438 two-byte relative address. */ | |
|
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439 pop_failure_jump, |
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440 |
| 941 | 441 /* Change to pop_failure_jump if know won't have to backtrack to |
| 442 match; otherwise change to jump. This is used to jump | |
| 443 back to the beginning of a repeat. If what follows this jump | |
| 444 clearly won't match what the repeat does, such that we can be | |
| 445 sure that there is no use backtracking out of repetitions | |
| 446 already matched, then we change it to a pop_failure_jump. | |
| 447 Followed by two-byte address. */ | |
|
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448 maybe_pop_jump, |
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449 |
| 941 | 450 /* Jump to following two-byte address, and push a dummy failure |
| 451 point. This failure point will be thrown away if an attempt | |
| 452 is made to use it for a failure. A `+' construct makes this | |
| 453 before the first repeat. Also used as an intermediary kind | |
| 454 of jump when compiling an alternative. */ | |
|
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455 dummy_failure_jump, |
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456 |
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457 /* Push a dummy failure point and continue. Used at the end of |
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458 alternatives. */ |
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459 push_dummy_failure, |
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460 |
| 941 | 461 /* Followed by two-byte relative address and two-byte number n. |
| 462 After matching N times, jump to the address upon failure. */ | |
|
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463 succeed_n, |
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464 |
| 941 | 465 /* Followed by two-byte relative address, and two-byte number n. |
| 466 Jump to the address N times, then fail. */ | |
|
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467 jump_n, |
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468 |
| 941 | 469 /* Set the following two-byte relative address to the |
| 470 subsequent two-byte number. The address *includes* the two | |
| 471 bytes of number. */ | |
|
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472 set_number_at, |
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473 |
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474 wordchar, /* Matches any word-constituent character. */ |
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475 notwordchar, /* Matches any char that is not a word-constituent. */ |
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476 |
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477 wordbeg, /* Succeeds if at word beginning. */ |
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478 wordend, /* Succeeds if at word end. */ |
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479 |
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480 wordbound, /* Succeeds if at a word boundary. */ |
| 941 | 481 notwordbound /* Succeeds if not at a word boundary. */ |
|
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482 |
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483 #ifdef emacs |
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484 ,before_dot, /* Succeeds if before point. */ |
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485 at_dot, /* Succeeds if at point. */ |
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486 after_dot, /* Succeeds if after point. */ |
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487 |
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488 /* Matches any character whose syntax is specified. Followed by |
| 941 | 489 a byte which contains a syntax code, e.g., Sword. */ |
|
441
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490 syntaxspec, |
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491 |
|
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492 /* Matches any character whose syntax is not that specified. */ |
| 939 | 493 notsyntaxspec, |
| 494 | |
| 495 /* Matches any character whose category-set contains the specified | |
| 941 | 496 category. The operator is followed by a byte which contains a |
| 497 category code (mnemonic ASCII character). */ | |
| 939 | 498 categoryspec, |
| 499 | |
| 500 /* Matches any character whose category-set does not contain the | |
| 501 specified category. The operator is followed by a byte which | |
| 502 contains the category code (mnemonic ASCII character). */ | |
| 503 notcategoryspec | |
|
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504 #endif /* emacs */ |
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505 } re_opcode_t; |
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506 |
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507 /* Common operations on the compiled pattern. */ |
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508 |
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509 /* Store NUMBER in two contiguous bytes starting at DESTINATION. */ |
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510 |
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511 #define STORE_NUMBER(destination, number) \ |
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512 do { \ |
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513 (destination)[0] = (number) & 0377; \ |
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514 (destination)[1] = (number) >> 8; \ |
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515 } while (0) |
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516 |
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517 /* Same as STORE_NUMBER, except increment DESTINATION to |
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518 the byte after where the number is stored. Therefore, DESTINATION |
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519 must be an lvalue. */ |
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520 |
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521 #define STORE_NUMBER_AND_INCR(destination, number) \ |
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522 do { \ |
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523 STORE_NUMBER (destination, number); \ |
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524 (destination) += 2; \ |
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525 } while (0) |
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526 |
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527 /* Put into DESTINATION a number stored in two contiguous bytes starting |
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528 at SOURCE. */ |
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529 |
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530 #define EXTRACT_NUMBER(destination, source) \ |
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531 do { \ |
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532 (destination) = *(source) & 0377; \ |
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533 (destination) += SIGN_EXTEND_CHAR (*((source) + 1)) << 8; \ |
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534 } while (0) |
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535 |
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536 #ifdef DEBUG |
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537 static void |
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538 extract_number (dest, source) |
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539 int *dest; |
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540 unsigned char *source; |
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541 { |
|
515
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542 int temp = SIGN_EXTEND_CHAR (*(source + 1)); |
|
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543 *dest = *source & 0377; |
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544 *dest += temp << 8; |
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545 } |
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546 |
| 941 | 547 #ifndef EXTRACT_MACROS /* To debug the macros. */ |
|
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548 #undef EXTRACT_NUMBER |
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549 #define EXTRACT_NUMBER(dest, src) extract_number (&dest, src) |
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550 #endif /* not EXTRACT_MACROS */ |
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551 |
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552 #endif /* DEBUG */ |
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553 |
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554 /* Same as EXTRACT_NUMBER, except increment SOURCE to after the number. |
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555 SOURCE must be an lvalue. */ |
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556 |
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557 #define EXTRACT_NUMBER_AND_INCR(destination, source) \ |
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558 do { \ |
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559 EXTRACT_NUMBER (destination, source); \ |
| 941 | 560 (source) += 2; \ |
|
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561 } while (0) |
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562 |
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563 #ifdef DEBUG |
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564 static void |
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565 extract_number_and_incr (destination, source) |
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566 int *destination; |
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567 unsigned char **source; |
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568 { |
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569 extract_number (destination, *source); |
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570 *source += 2; |
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571 } |
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572 |
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573 #ifndef EXTRACT_MACROS |
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574 #undef EXTRACT_NUMBER_AND_INCR |
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575 #define EXTRACT_NUMBER_AND_INCR(dest, src) \ |
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576 extract_number_and_incr (&dest, &src) |
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577 #endif /* not EXTRACT_MACROS */ |
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578 |
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579 #endif /* DEBUG */ |
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580 |
| 939 | 581 /* Store a multibyte character in three contiguous bytes starting |
| 582 DESTINATION, and increment DESTINATION to the byte after where the | |
| 941 | 583 character is stored. Therefore, DESTINATION must be an lvalue. */ |
| 939 | 584 |
| 585 #define STORE_CHARACTER_AND_INCR(destination, character) \ | |
| 586 do { \ | |
| 587 (destination)[0] = (character) & 0377; \ | |
| 588 (destination)[1] = ((character) >> 8) & 0377; \ | |
| 589 (destination)[2] = (character) >> 16; \ | |
| 590 (destination) += 3; \ | |
| 591 } while (0) | |
| 592 | |
| 593 /* Put into DESTINATION a character stored in three contiguous bytes | |
| 941 | 594 starting at SOURCE. */ |
| 939 | 595 |
| 596 #define EXTRACT_CHARACTER(destination, source) \ | |
| 597 do { \ | |
| 598 (destination) = ((source)[0] \ | |
| 599 | ((source)[1] << 8) \ | |
| 600 | ((source)[2] << 16)); \ | |
| 601 } while (0) | |
| 602 | |
| 603 | |
| 604 /* Macros for charset. */ | |
| 605 | |
| 606 /* Size of bitmap of charset P in bytes. P is a start of charset, | |
| 607 i.e. *P is (re_opcode_t) charset or (re_opcode_t) charset_not. */ | |
| 608 #define CHARSET_BITMAP_SIZE(p) ((p)[1] & 0x7F) | |
| 609 | |
| 610 /* Nonzero if charset P has range table. */ | |
| 941 | 611 #define CHARSET_RANGE_TABLE_EXISTS_P(p) ((p)[1] & 0x80) |
| 939 | 612 |
| 613 /* Return the address of range table of charset P. But not the start | |
| 614 of table itself, but the before where the number of ranges is | |
| 941 | 615 stored. `2 +' means to skip re_opcode_t and size of bitmap. */ |
| 939 | 616 #define CHARSET_RANGE_TABLE(p) (&(p)[2 + CHARSET_BITMAP_SIZE (p)]) |
| 617 | |
| 618 /* Test if C is listed in the bitmap of charset P. */ | |
| 619 #define CHARSET_LOOKUP_BITMAP(p, c) \ | |
| 620 ((c) < CHARSET_BITMAP_SIZE (p) * BYTEWIDTH \ | |
| 621 && (p)[2 + (c) / BYTEWIDTH] & (1 << ((c) % BYTEWIDTH))) | |
| 622 | |
| 623 /* Return the address of end of RANGE_TABLE. COUNT is number of | |
| 941 | 624 ranges (which is a pair of (start, end)) in the RANGE_TABLE. `* 2' |
| 625 is start of range and end of range. `* 3' is size of each start | |
| 939 | 626 and end. */ |
| 627 #define CHARSET_RANGE_TABLE_END(range_table, count) \ | |
| 628 ((range_table) + (count) * 2 * 3) | |
| 629 | |
| 941 | 630 /* Test if C is in RANGE_TABLE. A flag NOT is negated if C is in. |
| 939 | 631 COUNT is number of ranges in RANGE_TABLE. */ |
| 632 #define CHARSET_LOOKUP_RANGE_TABLE_RAW(not, c, range_table, count) \ | |
| 633 do \ | |
| 634 { \ | |
| 635 int range_start, range_end; \ | |
| 636 unsigned char *p; \ | |
| 637 unsigned char *range_table_end \ | |
| 638 = CHARSET_RANGE_TABLE_END ((range_table), (count)); \ | |
| 639 \ | |
| 640 for (p = (range_table); p < range_table_end; p += 2 * 3) \ | |
| 641 { \ | |
| 642 EXTRACT_CHARACTER (range_start, p); \ | |
| 643 EXTRACT_CHARACTER (range_end, p + 3); \ | |
| 644 \ | |
| 645 if (range_start <= (c) && (c) <= range_end) \ | |
| 646 { \ | |
| 647 (not) = !(not); \ | |
| 648 break; \ | |
| 649 } \ | |
| 650 } \ | |
| 651 } \ | |
| 652 while (0) | |
| 653 | |
| 654 /* Test if C is in range table of CHARSET. The flag NOT is negated if | |
| 655 C is listed in it. */ | |
| 656 #define CHARSET_LOOKUP_RANGE_TABLE(not, c, charset) \ | |
| 657 do \ | |
| 658 { \ | |
| 659 /* Number of ranges in range table. */ \ | |
| 660 int count; \ | |
| 661 unsigned char *range_table = CHARSET_RANGE_TABLE (charset); \ | |
| 662 \ | |
| 663 EXTRACT_NUMBER_AND_INCR (count, range_table); \ | |
| 664 CHARSET_LOOKUP_RANGE_TABLE_RAW ((not), (c), range_table, count); \ | |
| 665 } \ | |
| 666 while (0) | |
| 667 | |
|
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668 /* If DEBUG is defined, Regex prints many voluminous messages about what |
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669 it is doing (if the variable `debug' is nonzero). If linked with the |
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670 main program in `iregex.c', you can enter patterns and strings |
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671 interactively. And if linked with the main program in `main.c' and |
| 941 | 672 the other test files, you can run the already-written tests. */ |
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673 |
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674 #ifdef DEBUG |
|
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675 |
|
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676 /* We use standard I/O for debugging. */ |
|
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677 #include <stdio.h> |
|
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678 |
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679 /* It is useful to test things that ``must'' be true when debugging. */ |
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680 #include <assert.h> |
|
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681 |
|
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682 static int debug = 0; |
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683 |
|
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684 #define DEBUG_STATEMENT(e) e |
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685 #define DEBUG_PRINT1(x) if (debug) printf (x) |
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686 #define DEBUG_PRINT2(x1, x2) if (debug) printf (x1, x2) |
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687 #define DEBUG_PRINT3(x1, x2, x3) if (debug) printf (x1, x2, x3) |
|
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688 #define DEBUG_PRINT4(x1, x2, x3, x4) if (debug) printf (x1, x2, x3, x4) |
| 941 | 689 #define DEBUG_PRINT_COMPILED_PATTERN(p, s, e) \ |
|
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690 if (debug) print_partial_compiled_pattern (s, e) |
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|
691 #define DEBUG_PRINT_DOUBLE_STRING(w, s1, sz1, s2, sz2) \ |
|
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|
692 if (debug) print_double_string (w, s1, sz1, s2, sz2) |
|
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changeset
|
693 |
|
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|
694 |
|
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|
695 /* Print the fastmap in human-readable form. */ |
|
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changeset
|
696 |
|
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697 void |
|
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|
698 print_fastmap (fastmap) |
|
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changeset
|
699 char *fastmap; |
|
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700 { |
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changeset
|
701 unsigned was_a_range = 0; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
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511
diff
changeset
|
702 unsigned i = 0; |
|
69ba3b63e1d1
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parents:
511
diff
changeset
|
703 |
|
441
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diff
changeset
|
704 while (i < (1 << BYTEWIDTH)) |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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|
705 { |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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changeset
|
706 if (fastmap[i++]) |
|
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changeset
|
707 { |
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|
708 was_a_range = 0; |
| 941 | 709 putchar (i - 1); |
| 710 while (i < (1 << BYTEWIDTH) && fastmap[i]) | |
| 711 { | |
| 712 was_a_range = 1; | |
| 713 i++; | |
| 714 } | |
|
441
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changeset
|
715 if (was_a_range) |
| 941 | 716 { |
| 717 printf ("-"); | |
| 718 putchar (i - 1); | |
| 719 } | |
| 720 } | |
|
441
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|
721 } |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
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511
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changeset
|
722 putchar ('\n'); |
|
441
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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diff
changeset
|
723 } |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
724 |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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changeset
|
725 |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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changeset
|
726 /* Print a compiled pattern string in human-readable form, starting at |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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changeset
|
727 the START pointer into it and ending just before the pointer END. */ |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
728 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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diff
changeset
|
729 void |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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diff
changeset
|
730 print_partial_compiled_pattern (start, end) |
|
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diff
changeset
|
731 unsigned char *start; |
|
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changeset
|
732 unsigned char *end; |
|
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diff
changeset
|
733 { |
|
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diff
changeset
|
734 int mcnt, mcnt2; |
|
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diff
changeset
|
735 unsigned char *p = start; |
|
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diff
changeset
|
736 unsigned char *pend = end; |
|
403b2dfdfa0b
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438
diff
changeset
|
737 |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
738 if (start == NULL) |
|
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diff
changeset
|
739 { |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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diff
changeset
|
740 printf ("(null)\n"); |
|
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Roland McGrath <roland@gnu.org>
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diff
changeset
|
741 return; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
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diff
changeset
|
742 } |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
743 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
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diff
changeset
|
744 /* Loop over pattern commands. */ |
|
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Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
745 while (p < pend) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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diff
changeset
|
746 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
747 printf ("%d:\t", p - start); |
|
403b2dfdfa0b
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Roland McGrath <roland@gnu.org>
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diff
changeset
|
748 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
749 switch ((re_opcode_t) *p++) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
750 { |
| 941 | 751 case no_op: |
| 752 printf ("/no_op"); | |
| 753 break; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
754 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
755 case exactn: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
756 mcnt = *p++; |
| 941 | 757 printf ("/exactn/%d", mcnt); |
| 758 do | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
759 { |
| 941 | 760 putchar ('/'); |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
761 putchar (*p++); |
| 941 | 762 } |
| 763 while (--mcnt); | |
| 764 break; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
765 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
766 case start_memory: |
| 941 | 767 mcnt = *p++; |
| 768 printf ("/start_memory/%d/%d", mcnt, *p++); | |
| 769 break; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
770 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
771 case stop_memory: |
| 941 | 772 mcnt = *p++; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
773 printf ("/stop_memory/%d/%d", mcnt, *p++); |
| 941 | 774 break; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
775 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
776 case duplicate: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
777 printf ("/duplicate/%d", *p++); |
|
403b2dfdfa0b
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Roland McGrath <roland@gnu.org>
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diff
changeset
|
778 break; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
779 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
780 case anychar: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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parents:
438
diff
changeset
|
781 printf ("/anychar"); |
|
403b2dfdfa0b
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Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
782 break; |
|
403b2dfdfa0b
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Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
783 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
784 case charset: |
| 941 | 785 case charset_not: |
| 786 { | |
| 787 register int c, last = -100; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
788 register int in_range = 0; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
789 |
|
403b2dfdfa0b
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Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
790 printf ("/charset [%s", |
| 941 | 791 (re_opcode_t) *(p - 1) == charset_not ? "^" : ""); |
| 792 | |
| 793 assert (p + *p < pend); | |
| 794 | |
| 795 for (c = 0; c < 256; c++) | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
796 if (c / 8 < *p |
|
403b2dfdfa0b
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Roland McGrath <roland@gnu.org>
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438
diff
changeset
|
797 && (p[1 + (c/8)] & (1 << (c % 8)))) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
798 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
799 /* Are we starting a range? */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
800 if (last + 1 == c && ! in_range) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
801 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
802 putchar ('-'); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
803 in_range = 1; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
804 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
805 /* Have we broken a range? */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
806 else if (last + 1 != c && in_range) |
| 941 | 807 { |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
808 putchar (last); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
809 in_range = 0; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
810 } |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
811 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
812 if (! in_range) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
813 putchar (c); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
814 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
815 last = c; |
| 941 | 816 } |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
817 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
818 if (in_range) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
819 putchar (last); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
820 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
821 putchar (']'); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
822 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
823 p += 1 + *p; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
824 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
825 break; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
826 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
827 case begline: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
828 printf ("/begline"); |
| 941 | 829 break; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
830 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
831 case endline: |
| 941 | 832 printf ("/endline"); |
| 833 break; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
834 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
835 case on_failure_jump: |
| 941 | 836 extract_number_and_incr (&mcnt, &p); |
| 837 printf ("/on_failure_jump to %d", p + mcnt - start); | |
| 838 break; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
839 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
840 case on_failure_keep_string_jump: |
| 941 | 841 extract_number_and_incr (&mcnt, &p); |
| 842 printf ("/on_failure_keep_string_jump to %d", p + mcnt - start); | |
| 843 break; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
844 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
845 case dummy_failure_jump: |
| 941 | 846 extract_number_and_incr (&mcnt, &p); |
| 847 printf ("/dummy_failure_jump to %d", p + mcnt - start); | |
| 848 break; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
849 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
850 case push_dummy_failure: |
| 941 | 851 printf ("/push_dummy_failure"); |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
852 break; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
853 |
| 941 | 854 case maybe_pop_jump: |
| 855 extract_number_and_incr (&mcnt, &p); | |
| 856 printf ("/maybe_pop_jump to %d", p + mcnt - start); | |
| 857 break; | |
| 858 | |
| 859 case pop_failure_jump: | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
860 extract_number_and_incr (&mcnt, &p); |
| 941 | 861 printf ("/pop_failure_jump to %d", p + mcnt - start); |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
862 break; |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
863 |
| 941 | 864 case jump_past_alt: |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
865 extract_number_and_incr (&mcnt, &p); |
| 941 | 866 printf ("/jump_past_alt to %d", p + mcnt - start); |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
867 break; |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
868 |
| 941 | 869 case jump: |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
870 extract_number_and_incr (&mcnt, &p); |
| 941 | 871 printf ("/jump to %d", p + mcnt - start); |
| 679 | 872 break; |
| 873 | |
| 941 | 874 case succeed_n: |
| 875 extract_number_and_incr (&mcnt, &p); | |
| 876 extract_number_and_incr (&mcnt2, &p); | |
| 939 | 877 printf ("/succeed_n to %d, %d times", p + mcnt - start, mcnt2); |
| 941 | 878 break; |
| 879 | |
| 880 case jump_n: | |
| 881 extract_number_and_incr (&mcnt, &p); | |
| 882 extract_number_and_incr (&mcnt2, &p); | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
883 printf ("/jump_n to %d, %d times", p + mcnt - start, mcnt2); |
| 941 | 884 break; |
| 885 | |
| 886 case set_number_at: | |
| 887 extract_number_and_incr (&mcnt, &p); | |
| 888 extract_number_and_incr (&mcnt2, &p); | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
889 printf ("/set_number_at location %d to %d", p + mcnt - start, mcnt2); |
| 941 | 890 break; |
| 891 | |
| 892 case wordbound: | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
893 printf ("/wordbound"); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
894 break; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
895 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
896 case notwordbound: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
897 printf ("/notwordbound"); |
| 941 | 898 break; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
899 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
900 case wordbeg: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
901 printf ("/wordbeg"); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
902 break; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
903 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
904 case wordend: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
905 printf ("/wordend"); |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
906 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
907 #ifdef emacs |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
908 case before_dot: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
909 printf ("/before_dot"); |
| 941 | 910 break; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
911 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
912 case at_dot: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
913 printf ("/at_dot"); |
| 941 | 914 break; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
915 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
916 case after_dot: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
917 printf ("/after_dot"); |
| 941 | 918 break; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
919 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
920 case syntaxspec: |
| 941 | 921 printf ("/syntaxspec"); |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
922 mcnt = *p++; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
923 printf ("/%d", mcnt); |
| 941 | 924 break; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
925 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
926 case notsyntaxspec: |
| 941 | 927 printf ("/notsyntaxspec"); |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
928 mcnt = *p++; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
929 printf ("/%d", mcnt); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
930 break; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
931 #endif /* emacs */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
932 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
933 case wordchar: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
934 printf ("/wordchar"); |
| 941 | 935 break; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
936 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
937 case notwordchar: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
938 printf ("/notwordchar"); |
| 941 | 939 break; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
940 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
941 case begbuf: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
942 printf ("/begbuf"); |
| 941 | 943 break; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
944 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
945 case endbuf: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
946 printf ("/endbuf"); |
| 941 | 947 break; |
| 948 | |
| 949 default: | |
| 950 printf ("?%d", *(p-1)); | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
951 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
952 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
953 putchar ('\n'); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
954 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
955 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
956 printf ("%d:\tend of pattern.\n", p - start); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
957 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
958 |
|
403b2dfdfa0b
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|
959 |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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diff
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|
960 void |
|
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|
961 print_compiled_pattern (bufp) |
|
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|
962 struct re_pattern_buffer *bufp; |
|
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|
963 { |
|
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|
964 unsigned char *buffer = bufp->buffer; |
|
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|
965 |
|
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|
966 print_partial_compiled_pattern (buffer, buffer + bufp->used); |
|
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|
967 printf ("%d bytes used/%d bytes allocated.\n", bufp->used, bufp->allocated); |
|
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|
968 |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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|
969 if (bufp->fastmap_accurate && bufp->fastmap) |
|
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|
970 { |
|
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|
971 printf ("fastmap: "); |
|
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|
972 print_fastmap (bufp->fastmap); |
|
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|
973 } |
|
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diff
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|
974 |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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|
975 printf ("re_nsub: %d\t", bufp->re_nsub); |
|
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diff
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|
976 printf ("regs_alloc: %d\t", bufp->regs_allocated); |
|
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|
977 printf ("can_be_null: %d\t", bufp->can_be_null); |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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|
978 printf ("newline_anchor: %d\n", bufp->newline_anchor); |
|
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|
979 printf ("no_sub: %d\t", bufp->no_sub); |
|
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|
980 printf ("not_bol: %d\t", bufp->not_bol); |
|
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|
981 printf ("not_eol: %d\t", bufp->not_eol); |
|
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|
982 printf ("syntax: %d\n", bufp->syntax); |
|
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|
983 /* Perhaps we should print the translate table? */ |
|
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|
984 } |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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|
985 |
|
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diff
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|
986 |
|
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diff
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|
987 void |
|
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Roland McGrath <roland@gnu.org>
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|
988 print_double_string (where, string1, size1, string2, size2) |
|
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|
989 const char *where; |
|
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|
990 const char *string1; |
|
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|
991 const char *string2; |
|
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|
992 int size1; |
|
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|
993 int size2; |
|
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994 { |
|
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|
995 unsigned this_char; |
|
515
69ba3b63e1d1
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|
996 |
|
441
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|
997 if (where == NULL) |
|
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|
998 printf ("(null)"); |
|
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|
999 else |
|
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|
1000 { |
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|
1001 if (FIRST_STRING_P (where)) |
| 941 | 1002 { |
| 1003 for (this_char = where - string1; this_char < size1; this_char++) | |
| 1004 putchar (string1[this_char]); | |
| 1005 | |
| 1006 where = string2; | |
| 1007 } | |
|
441
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1008 |
|
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1009 for (this_char = where - string2; this_char < size2; this_char++) |
| 941 | 1010 putchar (string2[this_char]); |
|
441
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1011 } |
|
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1012 } |
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1013 |
|
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1014 #else /* not DEBUG */ |
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1015 |
|
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|
1016 #undef assert |
|
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1017 #define assert(e) |
|
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1018 |
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1019 #define DEBUG_STATEMENT(e) |
|
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1020 #define DEBUG_PRINT1(x) |
|
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1021 #define DEBUG_PRINT2(x1, x2) |
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1022 #define DEBUG_PRINT3(x1, x2, x3) |
|
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1023 #define DEBUG_PRINT4(x1, x2, x3, x4) |
|
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1024 #define DEBUG_PRINT_COMPILED_PATTERN(p, s, e) |
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1025 #define DEBUG_PRINT_DOUBLE_STRING(w, s1, sz1, s2, sz2) |
|
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|
1026 |
|
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1027 #endif /* not DEBUG */ |
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1028 |
|
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|
1029 /* Set by `re_set_syntax' to the current regexp syntax to recognize. Can |
|
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1030 also be assigned to arbitrarily: each pattern buffer stores its own |
|
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1031 syntax, so it can be changed between regex compilations. */ |
|
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1032 /* This has no initializer because initialized variables in Emacs |
|
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1033 become read-only after dumping. */ |
|
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1034 reg_syntax_t re_syntax_options; |
|
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|
1035 |
|
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|
1036 |
|
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|
1037 /* Specify the precise syntax of regexps for compilation. This provides |
|
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|
1038 for compatibility for various utilities which historically have |
|
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|
1039 different, incompatible syntaxes. |
|
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|
1040 |
|
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|
1041 The argument SYNTAX is a bit mask comprised of the various bits |
| 941 | 1042 defined in regex.h. We return the old syntax. */ |
|
441
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|
1043 |
|
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|
1044 reg_syntax_t |
|
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|
1045 re_set_syntax (syntax) |
|
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|
1046 reg_syntax_t syntax; |
|
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|
1047 { |
|
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|
1048 reg_syntax_t ret = re_syntax_options; |
|
515
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|
1049 |
|
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|
1050 re_syntax_options = syntax; |
|
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|
1051 return ret; |
|
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1052 } |
|
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|
1053 |
|
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|
1054 /* This table gives an error message for each of the error codes listed |
| 941 | 1055 in regex.h. Obviously the order here has to be same as there. |
|
441
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|
1056 POSIX doesn't require that we do anything for REG_NOERROR, |
| 941 | 1057 but why not be nice? */ |
|
441
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|
1058 |
|
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|
1059 static const char *re_error_msgid[] = |
|
515
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|
1060 { |
|
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|
1061 gettext_noop ("Success"), /* REG_NOERROR */ |
|
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|
1062 gettext_noop ("No match"), /* REG_NOMATCH */ |
|
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|
1063 gettext_noop ("Invalid regular expression"), /* REG_BADPAT */ |
|
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|
1064 gettext_noop ("Invalid collation character"), /* REG_ECOLLATE */ |
|
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|
1065 gettext_noop ("Invalid character class name"), /* REG_ECTYPE */ |
|
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|
1066 gettext_noop ("Trailing backslash"), /* REG_EESCAPE */ |
|
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|
1067 gettext_noop ("Invalid back reference"), /* REG_ESUBREG */ |
|
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1068 gettext_noop ("Unmatched [ or [^"), /* REG_EBRACK */ |
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1069 gettext_noop ("Unmatched ( or \\("), /* REG_EPAREN */ |
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1070 gettext_noop ("Unmatched \\{"), /* REG_EBRACE */ |
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1071 gettext_noop ("Invalid content of \\{\\}"), /* REG_BADBR */ |
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1072 gettext_noop ("Invalid range end"), /* REG_ERANGE */ |
|
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1073 gettext_noop ("Memory exhausted"), /* REG_ESPACE */ |
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1074 gettext_noop ("Invalid preceding regular expression"), /* REG_BADRPT */ |
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1075 gettext_noop ("Premature end of regular expression"), /* REG_EEND */ |
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1076 gettext_noop ("Regular expression too big"), /* REG_ESIZE */ |
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1077 gettext_noop ("Unmatched ) or \\)"), /* REG_ERPAREN */ |
|
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1078 }; |
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1079 |
| 941 | 1080 /* Avoiding alloca during matching, to placate r_alloc. */ |
|
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1081 |
|
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1082 /* Define MATCH_MAY_ALLOCATE unless we need to make sure that the |
|
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1083 searching and matching functions should not call alloca. On some |
|
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1084 systems, alloca is implemented in terms of malloc, and if we're |
|
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1085 using the relocating allocator routines, then malloc could cause a |
|
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1086 relocation, which might (if the strings being searched are in the |
|
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1087 ralloc heap) shift the data out from underneath the regexp |
|
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1088 routines. |
|
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1089 |
|
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1090 Here's another reason to avoid allocation: Emacs |
|
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1091 processes input from X in a signal handler; processing X input may |
|
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1092 call malloc; if input arrives while a matching routine is calling |
|
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1093 malloc, then we're scrod. But Emacs can't just block input while |
|
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1094 calling matching routines; then we don't notice interrupts when |
|
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1095 they come in. So, Emacs blocks input around all regexp calls |
|
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1096 except the matching calls, which it leaves unprotected, in the |
|
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1097 faith that they will not malloc. */ |
|
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1098 |
|
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1099 /* Normally, this is fine. */ |
|
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1100 #define MATCH_MAY_ALLOCATE |
|
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1101 |
|
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1102 /* When using GNU C, we are not REALLY using the C alloca, no matter |
|
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1103 what config.h may say. So don't take precautions for it. */ |
|
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|
1104 #ifdef __GNUC__ |
|
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1105 #undef C_ALLOCA |
|
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1106 #endif |
|
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1107 |
|
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1108 /* The match routines may not allocate if (1) they would do it with malloc |
|
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1109 and (2) it's not safe for them to use malloc. |
|
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1110 Note that if REL_ALLOC is defined, matching would not use malloc for the |
|
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1111 failure stack, but we would still use it for the register vectors; |
| 941 | 1112 so REL_ALLOC should not affect this. */ |
|
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1113 #if (defined (C_ALLOCA) || defined (REGEX_MALLOC)) && defined (emacs) |
|
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1114 #undef MATCH_MAY_ALLOCATE |
|
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1115 #endif |
|
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1116 |
|
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1117 |
|
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1118 /* Failure stack declarations and macros; both re_compile_fastmap and |
|
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1119 re_match_2 use a failure stack. These have to be macros because of |
|
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1120 REGEX_ALLOCATE_STACK. */ |
|
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1121 |
|
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|
1122 |
|
1156
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
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|
1123 /* Approximate number of failure points for which to initially allocate space |
|
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1124 when matching. If this number is exceeded, we allocate more |
|
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1125 space, so it is not a hard limit. */ |
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1126 #ifndef INIT_FAILURE_ALLOC |
|
1156
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|
1127 #define INIT_FAILURE_ALLOC 20 |
|
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1128 #endif |
|
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1129 |
|
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|
1130 /* Roughly the maximum number of failure points on the stack. Would be |
|
1156
8e1cbb305ddc
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|
1131 exactly that if always used TYPICAL_FAILURE_SIZE items each time we failed. |
|
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1132 This is a variable only so users of regex can assign to it; we never |
| 941 | 1133 change it ourselves. */ |
|
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|
1134 #if defined (MATCH_MAY_ALLOCATE) |
|
1156
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|
1135 /* Note that 4400 is enough to cause a crash on Alpha OSF/1, |
|
8e1cbb305ddc
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|
1136 whose default stack limit is 2mb. In order for a larger |
|
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
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|
1137 value to work reliably, you have to try to make it accord |
|
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
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|
1138 with the process stack limit. */ |
|
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
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|
1139 int re_max_failures = 40000; |
|
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1140 #else |
|
1156
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(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
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1141 int re_max_failures = 4000; |
|
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1142 #endif |
|
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1143 |
|
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1144 union fail_stack_elt |
|
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1145 { |
|
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1146 unsigned char *pointer; |
|
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1147 int integer; |
|
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1148 }; |
|
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1149 |
|
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1150 typedef union fail_stack_elt fail_stack_elt_t; |
|
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1151 |
|
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1152 typedef struct |
|
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1153 { |
|
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1154 fail_stack_elt_t *stack; |
|
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1155 unsigned size; |
|
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1156 unsigned avail; /* Offset of next open position. */ |
|
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1157 } fail_stack_type; |
|
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1158 |
|
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1159 #define FAIL_STACK_EMPTY() (fail_stack.avail == 0) |
|
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1160 #define FAIL_STACK_PTR_EMPTY() (fail_stack_ptr->avail == 0) |
|
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1161 #define FAIL_STACK_FULL() (fail_stack.avail == fail_stack.size) |
|
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1162 |
|
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1163 |
|
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1164 /* Define macros to initialize and free the failure stack. |
|
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1165 Do `return -2' if the alloc fails. */ |
|
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1166 |
|
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1167 #ifdef MATCH_MAY_ALLOCATE |
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1168 #define INIT_FAIL_STACK() \ |
|
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1169 do { \ |
|
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|
1170 fail_stack.stack = (fail_stack_elt_t *) \ |
|
1156
8e1cbb305ddc
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Karl Heuer <kwzh@gnu.org>
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|
1171 REGEX_ALLOCATE_STACK (INIT_FAILURE_ALLOC * TYPICAL_FAILURE_SIZE \ |
|
8e1cbb305ddc
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diff
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|
1172 * sizeof (fail_stack_elt_t)); \ |
|
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|
1173 \ |
|
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|
1174 if (fail_stack.stack == NULL) \ |
|
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|
1175 return -2; \ |
|
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Roland McGrath <roland@gnu.org>
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|
1176 \ |
|
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|
1177 fail_stack.size = INIT_FAILURE_ALLOC; \ |
|
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|
1178 fail_stack.avail = 0; \ |
|
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diff
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|
1179 } while (0) |
|
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diff
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|
1180 |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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diff
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|
1181 #define RESET_FAIL_STACK() REGEX_FREE_STACK (fail_stack.stack) |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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diff
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|
1182 #else |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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diff
changeset
|
1183 #define INIT_FAIL_STACK() \ |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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diff
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|
1184 do { \ |
|
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|
1185 fail_stack.avail = 0; \ |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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diff
changeset
|
1186 } while (0) |
|
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diff
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|
1187 |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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diff
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|
1188 #define RESET_FAIL_STACK() |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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|
1189 #endif |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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|
1190 |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
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|
1191 |
|
1156
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
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|
1192 /* Double the size of FAIL_STACK, up to a limit |
|
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
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diff
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|
1193 which allows approximately `re_max_failures' items. |
|
441
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|
1194 |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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diff
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|
1195 Return 1 if succeeds, and 0 if either ran out of memory |
|
515
69ba3b63e1d1
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Roland McGrath <roland@gnu.org>
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511
diff
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|
1196 allocating space for it or it was already too large. |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
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511
diff
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|
1197 |
| 941 | 1198 REGEX_REALLOCATE_STACK requires `destination' be declared. */ |
|
441
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diff
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|
1199 |
|
1156
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1200 /* Factor to increase the failure stack size by |
|
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1201 when we increase it. |
|
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1202 This used to be 2, but 2 was too wasteful |
|
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1203 because the old discarded stacks added up to as much space |
|
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1204 were as ultimate, maximum-size stack. */ |
|
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1205 #define FAIL_STACK_GROWTH_FACTOR 4 |
|
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1206 |
|
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1207 #define GROW_FAIL_STACK(fail_stack) \ |
|
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1208 ((fail_stack).size >= re_max_failures * TYPICAL_FAILURE_SIZE \ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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diff
changeset
|
1209 ? 0 \ |
|
1156
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1210 : ((fail_stack).stack \ |
|
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1211 = (fail_stack_elt_t *) \ |
| 941 | 1212 REGEX_REALLOCATE_STACK ((fail_stack).stack, \ |
| 1213 (fail_stack).size * sizeof (fail_stack_elt_t), \ | |
|
1156
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1214 MIN (re_max_failures * TYPICAL_FAILURE_SIZE, \ |
|
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1215 ((fail_stack).size * sizeof (fail_stack_elt_t) \ |
|
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1216 * FAIL_STACK_GROWTH_FACTOR))), \ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
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|
1217 \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
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|
1218 (fail_stack).stack == NULL \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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438
diff
changeset
|
1219 ? 0 \ |
|
1157
5aa89bba935d
(GROW_FAIL_STACK): Fix previous change:
Karl Heuer <kwzh@gnu.org>
parents:
1156
diff
changeset
|
1220 : ((fail_stack).size \ |
|
5aa89bba935d
(GROW_FAIL_STACK): Fix previous change:
Karl Heuer <kwzh@gnu.org>
parents:
1156
diff
changeset
|
1221 = (MIN (re_max_failures * TYPICAL_FAILURE_SIZE, \ |
|
5aa89bba935d
(GROW_FAIL_STACK): Fix previous change:
Karl Heuer <kwzh@gnu.org>
parents:
1156
diff
changeset
|
1222 ((fail_stack).size * sizeof (fail_stack_elt_t) \ |
|
5aa89bba935d
(GROW_FAIL_STACK): Fix previous change:
Karl Heuer <kwzh@gnu.org>
parents:
1156
diff
changeset
|
1223 * FAIL_STACK_GROWTH_FACTOR)) \ |
|
5aa89bba935d
(GROW_FAIL_STACK): Fix previous change:
Karl Heuer <kwzh@gnu.org>
parents:
1156
diff
changeset
|
1224 / sizeof (fail_stack_elt_t)), \ |
| 941 | 1225 1))) |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1226 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1227 |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1228 /* Push pointer POINTER on FAIL_STACK. |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1229 Return 1 if was able to do so and 0 if ran out of memory allocating |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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438
diff
changeset
|
1230 space to do so. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1231 #define PUSH_PATTERN_OP(POINTER, FAIL_STACK) \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1232 ((FAIL_STACK_FULL () \ |
|
1156
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1233 && !GROW_FAIL_STACK (FAIL_STACK)) \ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1234 ? 0 \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1235 : ((FAIL_STACK).stack[(FAIL_STACK).avail++].pointer = POINTER, \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1236 1)) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1237 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1238 /* Push a pointer value onto the failure stack. |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1239 Assumes the variable `fail_stack'. Probably should only |
| 941 | 1240 be called from within `PUSH_FAILURE_POINT'. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1241 #define PUSH_FAILURE_POINTER(item) \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1242 fail_stack.stack[fail_stack.avail++].pointer = (unsigned char *) (item) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1243 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1244 /* This pushes an integer-valued item onto the failure stack. |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1245 Assumes the variable `fail_stack'. Probably should only |
| 941 | 1246 be called from within `PUSH_FAILURE_POINT'. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1247 #define PUSH_FAILURE_INT(item) \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1248 fail_stack.stack[fail_stack.avail++].integer = (item) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1249 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1250 /* Push a fail_stack_elt_t value onto the failure stack. |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1251 Assumes the variable `fail_stack'. Probably should only |
| 941 | 1252 be called from within `PUSH_FAILURE_POINT'. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1253 #define PUSH_FAILURE_ELT(item) \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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438
diff
changeset
|
1254 fail_stack.stack[fail_stack.avail++] = (item) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1255 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1256 /* These three POP... operations complement the three PUSH... operations. |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1257 All assume that `fail_stack' is nonempty. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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438
diff
changeset
|
1258 #define POP_FAILURE_POINTER() fail_stack.stack[--fail_stack.avail].pointer |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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438
diff
changeset
|
1259 #define POP_FAILURE_INT() fail_stack.stack[--fail_stack.avail].integer |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1260 #define POP_FAILURE_ELT() fail_stack.stack[--fail_stack.avail] |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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438
diff
changeset
|
1261 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1262 /* Used to omit pushing failure point id's when we're not debugging. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1263 #ifdef DEBUG |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1264 #define DEBUG_PUSH PUSH_FAILURE_INT |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
1265 #define DEBUG_POP(item_addr) *(item_addr) = POP_FAILURE_INT () |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
1266 #else |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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438
diff
changeset
|
1267 #define DEBUG_PUSH(item) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
1268 #define DEBUG_POP(item_addr) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
1269 #endif |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1270 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1271 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1272 /* Push the information about the state we will need |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1273 if we ever fail back to it. |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1274 |
|
441
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diff
changeset
|
1275 Requires variables fail_stack, regstart, regend, reg_info, and |
|
1156
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1276 num_regs be declared. GROW_FAIL_STACK requires `destination' be |
|
441
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
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diff
changeset
|
1277 declared. |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1278 |
|
441
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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438
diff
changeset
|
1279 Does `return FAILURE_CODE' if runs out of memory. */ |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
1280 |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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438
diff
changeset
|
1281 #define PUSH_FAILURE_POINT(pattern_place, string_place, failure_code) \ |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
1282 do { \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
1283 char *destination; \ |
|
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Roland McGrath <roland@gnu.org>
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438
diff
changeset
|
1284 /* Must be int, so when we don't save any registers, the arithmetic \ |
|
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Roland McGrath <roland@gnu.org>
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diff
changeset
|
1285 of 0 + -1 isn't done as unsigned. */ \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
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diff
changeset
|
1286 int this_reg; \ |
| 941 | 1287 \ |
|
441
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Roland McGrath <roland@gnu.org>
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diff
changeset
|
1288 DEBUG_STATEMENT (failure_id++); \ |
|
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Roland McGrath <roland@gnu.org>
parents:
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diff
changeset
|
1289 DEBUG_STATEMENT (nfailure_points_pushed++); \ |
|
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Roland McGrath <roland@gnu.org>
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diff
changeset
|
1290 DEBUG_PRINT2 ("\nPUSH_FAILURE_POINT #%u:\n", failure_id); \ |
|
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Roland McGrath <roland@gnu.org>
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diff
changeset
|
1291 DEBUG_PRINT2 (" Before push, next avail: %d\n", (fail_stack).avail);\ |
| 941 | 1292 DEBUG_PRINT2 (" size: %d\n", (fail_stack).size);\ |
|
441
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diff
changeset
|
1293 \ |
|
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Roland McGrath <roland@gnu.org>
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diff
changeset
|
1294 DEBUG_PRINT2 (" slots needed: %d\n", NUM_FAILURE_ITEMS); \ |
| 941 | 1295 DEBUG_PRINT2 (" available: %d\n", REMAINING_AVAIL_SLOTS); \ |
|
441
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Roland McGrath <roland@gnu.org>
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diff
changeset
|
1296 \ |
|
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Roland McGrath <roland@gnu.org>
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438
diff
changeset
|
1297 /* Ensure we have enough space allocated for what we will push. */ \ |
|
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Roland McGrath <roland@gnu.org>
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diff
changeset
|
1298 while (REMAINING_AVAIL_SLOTS < NUM_FAILURE_ITEMS) \ |
|
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Roland McGrath <roland@gnu.org>
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diff
changeset
|
1299 { \ |
|
1156
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1300 if (!GROW_FAIL_STACK (fail_stack)) \ |
| 941 | 1301 return failure_code; \ |
|
441
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Roland McGrath <roland@gnu.org>
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diff
changeset
|
1302 \ |
| 941 | 1303 DEBUG_PRINT2 ("\n Doubled stack; size now: %d\n", \ |
|
441
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Roland McGrath <roland@gnu.org>
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diff
changeset
|
1304 (fail_stack).size); \ |
| 941 | 1305 DEBUG_PRINT2 (" slots available: %d\n", REMAINING_AVAIL_SLOTS);\ |
|
441
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Roland McGrath <roland@gnu.org>
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diff
changeset
|
1306 } \ |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
1307 \ |
|
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Roland McGrath <roland@gnu.org>
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diff
changeset
|
1308 /* Push the info, starting with the registers. */ \ |
|
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Roland McGrath <roland@gnu.org>
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diff
changeset
|
1309 DEBUG_PRINT1 ("\n"); \ |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
1310 \ |
|
511
799190471f84
(NUM_FAILURE_ITEMS, POP_FAILURE_POINT, PUSH_FAILURE_POINT):
Richard Stallman <rms@gnu.org>
parents:
506
diff
changeset
|
1311 if (1) \ |
|
480
998dc67883fb
(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
parents:
463
diff
changeset
|
1312 for (this_reg = lowest_active_reg; this_reg <= highest_active_reg; \ |
|
998dc67883fb
(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
parents:
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diff
changeset
|
1313 this_reg++) \ |
|
998dc67883fb
(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
parents:
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diff
changeset
|
1314 { \ |
|
998dc67883fb
(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
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diff
changeset
|
1315 DEBUG_PRINT2 (" Pushing reg: %d\n", this_reg); \ |
|
998dc67883fb
(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
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|
1316 DEBUG_STATEMENT (num_regs_pushed++); \ |
|
441
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Roland McGrath <roland@gnu.org>
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diff
changeset
|
1317 \ |
|
480
998dc67883fb
(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
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diff
changeset
|
1318 DEBUG_PRINT2 (" start: 0x%x\n", regstart[this_reg]); \ |
|
998dc67883fb
(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
parents:
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changeset
|
1319 PUSH_FAILURE_POINTER (regstart[this_reg]); \ |
|
441
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Roland McGrath <roland@gnu.org>
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|
1320 \ |
|
480
998dc67883fb
(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
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diff
changeset
|
1321 DEBUG_PRINT2 (" end: 0x%x\n", regend[this_reg]); \ |
|
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(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
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changeset
|
1322 PUSH_FAILURE_POINTER (regend[this_reg]); \ |
|
998dc67883fb
(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
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|
1323 \ |
|
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(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
parents:
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diff
changeset
|
1324 DEBUG_PRINT2 (" info: 0x%x\n ", reg_info[this_reg]); \ |
|
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(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
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|
1325 DEBUG_PRINT2 (" match_null=%d", \ |
|
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(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
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diff
changeset
|
1326 REG_MATCH_NULL_STRING_P (reg_info[this_reg])); \ |
|
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(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
parents:
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diff
changeset
|
1327 DEBUG_PRINT2 (" active=%d", IS_ACTIVE (reg_info[this_reg])); \ |
|
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(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
parents:
463
diff
changeset
|
1328 DEBUG_PRINT2 (" matched_something=%d", \ |
|
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(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
parents:
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diff
changeset
|
1329 MATCHED_SOMETHING (reg_info[this_reg])); \ |
|
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(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
parents:
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diff
changeset
|
1330 DEBUG_PRINT2 (" ever_matched=%d", \ |
|
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(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
parents:
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diff
changeset
|
1331 EVER_MATCHED_SOMETHING (reg_info[this_reg])); \ |
|
998dc67883fb
(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
parents:
463
diff
changeset
|
1332 DEBUG_PRINT1 ("\n"); \ |
|
998dc67883fb
(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
parents:
463
diff
changeset
|
1333 PUSH_FAILURE_ELT (reg_info[this_reg].word); \ |
|
998dc67883fb
(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
parents:
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diff
changeset
|
1334 } \ |
|
441
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Roland McGrath <roland@gnu.org>
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diff
changeset
|
1335 \ |
|
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Roland McGrath <roland@gnu.org>
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438
diff
changeset
|
1336 DEBUG_PRINT2 (" Pushing low active reg: %d\n", lowest_active_reg);\ |
|
403b2dfdfa0b
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Roland McGrath <roland@gnu.org>
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diff
changeset
|
1337 PUSH_FAILURE_INT (lowest_active_reg); \ |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
1338 \ |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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438
diff
changeset
|
1339 DEBUG_PRINT2 (" Pushing high active reg: %d\n", highest_active_reg);\ |
|
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Roland McGrath <roland@gnu.org>
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438
diff
changeset
|
1340 PUSH_FAILURE_INT (highest_active_reg); \ |
|
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diff
changeset
|
1341 \ |
|
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diff
changeset
|
1342 DEBUG_PRINT2 (" Pushing pattern 0x%x: ", pattern_place); \ |
|
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Roland McGrath <roland@gnu.org>
parents:
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diff
changeset
|
1343 DEBUG_PRINT_COMPILED_PATTERN (bufp, pattern_place, pend); \ |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1344 PUSH_FAILURE_POINTER (pattern_place); \ |
|
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Roland McGrath <roland@gnu.org>
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diff
changeset
|
1345 \ |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1346 DEBUG_PRINT2 (" Pushing string 0x%x: `", string_place); \ |
| 941 | 1347 DEBUG_PRINT_DOUBLE_STRING (string_place, string1, size1, string2, \ |
|
441
403b2dfdfa0b
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Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1348 size2); \ |
|
403b2dfdfa0b
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Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1349 DEBUG_PRINT1 ("'\n"); \ |
|
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Roland McGrath <roland@gnu.org>
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438
diff
changeset
|
1350 PUSH_FAILURE_POINTER (string_place); \ |
|
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Roland McGrath <roland@gnu.org>
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diff
changeset
|
1351 \ |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
1352 DEBUG_PRINT2 (" Pushing failure id: %u\n", failure_id); \ |
|
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diff
changeset
|
1353 DEBUG_PUSH (failure_id); \ |
|
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Roland McGrath <roland@gnu.org>
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diff
changeset
|
1354 } while (0) |
|
403b2dfdfa0b
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Roland McGrath <roland@gnu.org>
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diff
changeset
|
1355 |
|
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parents:
438
diff
changeset
|
1356 /* This is the number of items that are pushed and popped on the stack |
|
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Roland McGrath <roland@gnu.org>
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diff
changeset
|
1357 for each register. */ |
|
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Roland McGrath <roland@gnu.org>
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diff
changeset
|
1358 #define NUM_REG_ITEMS 3 |
|
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diff
changeset
|
1359 |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
1360 /* Individual items aside from the registers. */ |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
1361 #ifdef DEBUG |
|
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Roland McGrath <roland@gnu.org>
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438
diff
changeset
|
1362 #define NUM_NONREG_ITEMS 5 /* Includes failure point id. */ |
|
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diff
changeset
|
1363 #else |
|
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diff
changeset
|
1364 #define NUM_NONREG_ITEMS 4 |
|
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diff
changeset
|
1365 #endif |
|
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diff
changeset
|
1366 |
|
1156
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1367 /* Estimate the size of data pushed by a typical failure stack entry. |
|
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1368 An estimate is all we need, because all we use this for |
|
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1369 is to choose a limit for how big to make the failure stack. */ |
|
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1370 |
|
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
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992
diff
changeset
|
1371 #define TYPICAL_FAILURE_SIZE 20 |
|
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
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parents:
992
diff
changeset
|
1372 |
|
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
1373 /* This is how many items we actually use for a failure point. |
|
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
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diff
changeset
|
1374 It depends on the regexp. */ |
|
480
998dc67883fb
(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
parents:
463
diff
changeset
|
1375 #define NUM_FAILURE_ITEMS \ |
|
511
799190471f84
(NUM_FAILURE_ITEMS, POP_FAILURE_POINT, PUSH_FAILURE_POINT):
Richard Stallman <rms@gnu.org>
parents:
506
diff
changeset
|
1376 (((0 \ |
|
480
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(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
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diff
changeset
|
1377 ? 0 : highest_active_reg - lowest_active_reg + 1) \ |
|
998dc67883fb
(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
parents:
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diff
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|
1378 * NUM_REG_ITEMS) \ |
|
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Richard Stallman <rms@gnu.org>
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|
1379 + NUM_NONREG_ITEMS) |
|
441
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diff
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|
1380 |
|
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Roland McGrath <roland@gnu.org>
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diff
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|
1381 /* How many items can still be added to the stack without overflowing it. */ |
|
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diff
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|
1382 #define REMAINING_AVAIL_SLOTS ((fail_stack).size - (fail_stack).avail) |
|
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diff
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|
1383 |
|
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diff
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|
1384 |
|
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diff
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|
1385 /* Pops what PUSH_FAIL_STACK pushes. |
|
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|
1386 |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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diff
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|
1387 We restore into the parameters, all of which should be lvalues: |
|
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|
1388 STR -- the saved data position. |
|
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|
1389 PAT -- the saved pattern position. |
|
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diff
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|
1390 LOW_REG, HIGH_REG -- the highest and lowest active registers. |
|
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diff
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|
1391 REGSTART, REGEND -- arrays of string positions. |
|
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diff
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|
1392 REG_INFO -- array of information about each subexpression. |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
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parents:
511
diff
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|
1393 |
|
441
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diff
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|
1394 Also assumes the variables `fail_stack' and (if debugging), `bufp', |
| 941 | 1395 `pend', `string1', `size1', `string2', and `size2'. */ |
|
441
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diff
changeset
|
1396 |
|
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diff
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|
1397 #define POP_FAILURE_POINT(str, pat, low_reg, high_reg, regstart, regend, reg_info)\ |
|
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|
1398 { \ |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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|
1399 DEBUG_STATEMENT (fail_stack_elt_t failure_id;) \ |
|
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|
1400 int this_reg; \ |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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diff
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|
1401 const unsigned char *string_temp; \ |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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diff
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|
1402 \ |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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diff
changeset
|
1403 assert (!FAIL_STACK_EMPTY ()); \ |
|
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diff
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|
1404 \ |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
1405 /* Remove failure points and point to how many regs pushed. */ \ |
|
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diff
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|
1406 DEBUG_PRINT1 ("POP_FAILURE_POINT:\n"); \ |
|
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diff
changeset
|
1407 DEBUG_PRINT2 (" Before pop, next avail: %d\n", fail_stack.avail); \ |
| 941 | 1408 DEBUG_PRINT2 (" size: %d\n", fail_stack.size); \ |
|
441
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Roland McGrath <roland@gnu.org>
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diff
changeset
|
1409 \ |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
1410 assert (fail_stack.avail >= NUM_NONREG_ITEMS); \ |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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diff
changeset
|
1411 \ |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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diff
changeset
|
1412 DEBUG_POP (&failure_id); \ |
|
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diff
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|
1413 DEBUG_PRINT2 (" Popping failure id: %u\n", failure_id); \ |
|
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diff
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|
1414 \ |
|
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Roland McGrath <roland@gnu.org>
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diff
changeset
|
1415 /* If the saved string location is NULL, it came from an \ |
|
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Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1416 on_failure_keep_string_jump opcode, and we want to throw away the \ |
|
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Roland McGrath <roland@gnu.org>
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438
diff
changeset
|
1417 saved NULL, thus retaining our current position in the string. */ \ |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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diff
changeset
|
1418 string_temp = POP_FAILURE_POINTER (); \ |
|
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Roland McGrath <roland@gnu.org>
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diff
changeset
|
1419 if (string_temp != NULL) \ |
|
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diff
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|
1420 str = (const char *) string_temp; \ |
|
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diff
changeset
|
1421 \ |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
1422 DEBUG_PRINT2 (" Popping string 0x%x: `", str); \ |
|
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Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1423 DEBUG_PRINT_DOUBLE_STRING (str, string1, size1, string2, size2); \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
1424 DEBUG_PRINT1 ("'\n"); \ |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1425 \ |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1426 pat = (unsigned char *) POP_FAILURE_POINTER (); \ |
|
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Roland McGrath <roland@gnu.org>
parents:
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diff
changeset
|
1427 DEBUG_PRINT2 (" Popping pattern 0x%x: ", pat); \ |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
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diff
changeset
|
1428 DEBUG_PRINT_COMPILED_PATTERN (bufp, pat, pend); \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1429 \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1430 /* Restore register info. */ \ |
|
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Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1431 high_reg = (unsigned) POP_FAILURE_INT (); \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
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diff
changeset
|
1432 DEBUG_PRINT2 (" Popping high active reg: %d\n", high_reg); \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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diff
changeset
|
1433 \ |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1434 low_reg = (unsigned) POP_FAILURE_INT (); \ |
|
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Roland McGrath <roland@gnu.org>
parents:
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diff
changeset
|
1435 DEBUG_PRINT2 (" Popping low active reg: %d\n", low_reg); \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1436 \ |
|
511
799190471f84
(NUM_FAILURE_ITEMS, POP_FAILURE_POINT, PUSH_FAILURE_POINT):
Richard Stallman <rms@gnu.org>
parents:
506
diff
changeset
|
1437 if (1) \ |
|
480
998dc67883fb
(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
parents:
463
diff
changeset
|
1438 for (this_reg = high_reg; this_reg >= low_reg; this_reg--) \ |
|
998dc67883fb
(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
parents:
463
diff
changeset
|
1439 { \ |
| 941 | 1440 DEBUG_PRINT2 (" Popping reg: %d\n", this_reg); \ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1441 \ |
|
480
998dc67883fb
(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
parents:
463
diff
changeset
|
1442 reg_info[this_reg].word = POP_FAILURE_ELT (); \ |
| 941 | 1443 DEBUG_PRINT2 (" info: 0x%x\n", reg_info[this_reg]); \ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1444 \ |
|
480
998dc67883fb
(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
parents:
463
diff
changeset
|
1445 regend[this_reg] = (const char *) POP_FAILURE_POINTER (); \ |
| 941 | 1446 DEBUG_PRINT2 (" end: 0x%x\n", regend[this_reg]); \ |
|
480
998dc67883fb
(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
parents:
463
diff
changeset
|
1447 \ |
|
998dc67883fb
(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
parents:
463
diff
changeset
|
1448 regstart[this_reg] = (const char *) POP_FAILURE_POINTER (); \ |
| 941 | 1449 DEBUG_PRINT2 (" start: 0x%x\n", regstart[this_reg]); \ |
|
480
998dc67883fb
(PUSH_FAILURE_POINT, POP_FAILURE_POINT): Don't push or pop
Richard Stallman <rms@gnu.org>
parents:
463
diff
changeset
|
1450 } \ |
|
501
f29b13c2cefd
(TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents:
490
diff
changeset
|
1451 else \ |
|
f29b13c2cefd
(TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents:
490
diff
changeset
|
1452 { \ |
|
f29b13c2cefd
(TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents:
490
diff
changeset
|
1453 for (this_reg = highest_active_reg; this_reg > high_reg; this_reg--) \ |
|
f29b13c2cefd
(TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents:
490
diff
changeset
|
1454 { \ |
|
506
b2984f830b57
(POP_FAILURE_POINT): Use .word.integer.
Richard Stallman <rms@gnu.org>
parents:
503
diff
changeset
|
1455 reg_info[this_reg].word.integer = 0; \ |
|
501
f29b13c2cefd
(TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents:
490
diff
changeset
|
1456 regend[this_reg] = 0; \ |
|
f29b13c2cefd
(TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents:
490
diff
changeset
|
1457 regstart[this_reg] = 0; \ |
|
f29b13c2cefd
(TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents:
490
diff
changeset
|
1458 } \ |
|
f29b13c2cefd
(TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents:
490
diff
changeset
|
1459 highest_active_reg = high_reg; \ |
|
f29b13c2cefd
(TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents:
490
diff
changeset
|
1460 } \ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1461 \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1462 set_regs_matched_done = 0; \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1463 DEBUG_STATEMENT (nfailure_points_popped++); \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1464 } /* POP_FAILURE_POINT */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
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438
diff
changeset
|
1465 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1466 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1467 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1468 /* Structure for per-register (a.k.a. per-group) information. |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1469 Other register information, such as the |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1470 starting and ending positions (which are addresses), and the list of |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1471 inner groups (which is a bits list) are maintained in separate |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1472 variables. |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1473 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1474 We are making a (strictly speaking) nonportable assumption here: that |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1475 the compiler will pack our bit fields into something that fits into |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1476 the type of `word', i.e., is something that fits into one item on the |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1477 failure stack. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1478 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1479 typedef union |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1480 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1481 fail_stack_elt_t word; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1482 struct |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1483 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1484 /* This field is one if this group can match the empty string, |
| 941 | 1485 zero if not. If not yet determined, `MATCH_NULL_UNSET_VALUE'. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1486 #define MATCH_NULL_UNSET_VALUE 3 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1487 unsigned match_null_string_p : 2; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1488 unsigned is_active : 1; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1489 unsigned matched_something : 1; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1490 unsigned ever_matched_something : 1; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1491 } bits; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1492 } register_info_type; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1493 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1494 #define REG_MATCH_NULL_STRING_P(R) ((R).bits.match_null_string_p) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1495 #define IS_ACTIVE(R) ((R).bits.is_active) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1496 #define MATCHED_SOMETHING(R) ((R).bits.matched_something) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1497 #define EVER_MATCHED_SOMETHING(R) ((R).bits.ever_matched_something) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1498 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1499 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1500 /* Call this when have matched a real character; it sets `matched' flags |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1501 for the subexpressions which we are currently inside. Also records |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1502 that those subexprs have matched. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1503 #define SET_REGS_MATCHED() \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1504 do \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1505 { \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1506 if (!set_regs_matched_done) \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1507 { \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1508 unsigned r; \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1509 set_regs_matched_done = 1; \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1510 for (r = lowest_active_reg; r <= highest_active_reg; r++) \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1511 { \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1512 MATCHED_SOMETHING (reg_info[r]) \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1513 = EVER_MATCHED_SOMETHING (reg_info[r]) \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1514 = 1; \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1515 } \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1516 } \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1517 } \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1518 while (0) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1519 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1520 /* Registers are set to a sentinel when they haven't yet matched. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1521 static char reg_unset_dummy; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1522 #define REG_UNSET_VALUE (®_unset_dummy) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1523 #define REG_UNSET(e) ((e) == REG_UNSET_VALUE) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1524 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1525 /* Subroutine declarations and macros for regex_compile. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1526 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1527 static void store_op1 (), store_op2 (); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1528 static void insert_op1 (), insert_op2 (); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1529 static boolean at_begline_loc_p (), at_endline_loc_p (); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1530 static boolean group_in_compile_stack (); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1531 static reg_errcode_t compile_range (); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1532 |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1533 /* Fetch the next character in the uncompiled pattern---translating it |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1534 if necessary. Also cast from a signed character in the constant |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1535 string passed to us by the user to an unsigned char that we can use |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1536 as an array index (in, e.g., `translate'). */ |
|
501
f29b13c2cefd
(TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents:
490
diff
changeset
|
1537 #ifndef PATFETCH |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1538 #define PATFETCH(c) \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1539 do {if (p == pend) return REG_EEND; \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1540 c = (unsigned char) *p++; \ |
|
501
f29b13c2cefd
(TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents:
490
diff
changeset
|
1541 if (translate) c = (unsigned char) translate[c]; \ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1542 } while (0) |
|
501
f29b13c2cefd
(TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents:
490
diff
changeset
|
1543 #endif |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1544 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1545 /* Fetch the next character in the uncompiled pattern, with no |
| 941 | 1546 translation. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1547 #define PATFETCH_RAW(c) \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1548 do {if (p == pend) return REG_EEND; \ |
| 941 | 1549 c = (unsigned char) *p++; \ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1550 } while (0) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1551 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1552 /* Go backwards one character in the pattern. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1553 #define PATUNFETCH p-- |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1554 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1555 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1556 /* If `translate' is non-null, return translate[D], else just D. We |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1557 cast the subscript to translate because some data is declared as |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1558 `char *', to avoid warnings when a string constant is passed. But |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1559 when we use a character as a subscript we must make it unsigned. */ |
|
501
f29b13c2cefd
(TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents:
490
diff
changeset
|
1560 #ifndef TRANSLATE |
|
f29b13c2cefd
(TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents:
490
diff
changeset
|
1561 #define TRANSLATE(d) \ |
|
963
ed0235161e4b
(TRANSLATE, re_search_2, re_match_2_internal,bcmp_translate):
Richard Stallman <rms@gnu.org>
parents:
961
diff
changeset
|
1562 (translate ? (unsigned char) RE_TRANSLATE (translate, (unsigned char) (d)) : (d)) |
|
501
f29b13c2cefd
(TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents:
490
diff
changeset
|
1563 #endif |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1564 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1565 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1566 /* Macros for outputting the compiled pattern into `buffer'. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1567 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1568 /* If the buffer isn't allocated when it comes in, use this. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1569 #define INIT_BUF_SIZE 32 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1570 |
| 941 | 1571 /* Make sure we have at least N more bytes of space in buffer. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1572 #define GET_BUFFER_SPACE(n) \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1573 while (b - bufp->buffer + (n) > bufp->allocated) \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1574 EXTEND_BUFFER () |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1575 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1576 /* Make sure we have one more byte of buffer space and then add C to it. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1577 #define BUF_PUSH(c) \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1578 do { \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1579 GET_BUFFER_SPACE (1); \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1580 *b++ = (unsigned char) (c); \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1581 } while (0) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1582 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1583 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1584 /* Ensure we have two more bytes of buffer space and then append C1 and C2. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1585 #define BUF_PUSH_2(c1, c2) \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1586 do { \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1587 GET_BUFFER_SPACE (2); \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1588 *b++ = (unsigned char) (c1); \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1589 *b++ = (unsigned char) (c2); \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1590 } while (0) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1591 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1592 |
| 941 | 1593 /* As with BUF_PUSH_2, except for three bytes. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1594 #define BUF_PUSH_3(c1, c2, c3) \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1595 do { \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1596 GET_BUFFER_SPACE (3); \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1597 *b++ = (unsigned char) (c1); \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1598 *b++ = (unsigned char) (c2); \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1599 *b++ = (unsigned char) (c3); \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1600 } while (0) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1601 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1602 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1603 /* Store a jump with opcode OP at LOC to location TO. We store a |
| 941 | 1604 relative address offset by the three bytes the jump itself occupies. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1605 #define STORE_JUMP(op, loc, to) \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1606 store_op1 (op, loc, (to) - (loc) - 3) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1607 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1608 /* Likewise, for a two-argument jump. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1609 #define STORE_JUMP2(op, loc, to, arg) \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1610 store_op2 (op, loc, (to) - (loc) - 3, arg) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1611 |
| 941 | 1612 /* Like `STORE_JUMP', but for inserting. Assume `b' is the buffer end. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1613 #define INSERT_JUMP(op, loc, to) \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1614 insert_op1 (op, loc, (to) - (loc) - 3, b) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1615 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1616 /* Like `STORE_JUMP2', but for inserting. Assume `b' is the buffer end. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1617 #define INSERT_JUMP2(op, loc, to, arg) \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1618 insert_op2 (op, loc, (to) - (loc) - 3, arg, b) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1619 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1620 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1621 /* This is not an arbitrary limit: the arguments which represent offsets |
| 941 | 1622 into the pattern are two bytes long. So if 2^16 bytes turns out to |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1623 be too small, many things would have to change. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1624 #define MAX_BUF_SIZE (1L << 16) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1625 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1626 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1627 /* Extend the buffer by twice its current size via realloc and |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1628 reset the pointers that pointed into the old block to point to the |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1629 correct places in the new one. If extending the buffer results in it |
| 941 | 1630 being larger than MAX_BUF_SIZE, then flag memory exhausted. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1631 #define EXTEND_BUFFER() \ |
| 941 | 1632 do { \ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1633 unsigned char *old_buffer = bufp->buffer; \ |
| 941 | 1634 if (bufp->allocated == MAX_BUF_SIZE) \ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1635 return REG_ESIZE; \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1636 bufp->allocated <<= 1; \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1637 if (bufp->allocated > MAX_BUF_SIZE) \ |
| 941 | 1638 bufp->allocated = MAX_BUF_SIZE; \ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1639 bufp->buffer = (unsigned char *) realloc (bufp->buffer, bufp->allocated);\ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1640 if (bufp->buffer == NULL) \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1641 return REG_ESPACE; \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1642 /* If the buffer moved, move all the pointers into it. */ \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1643 if (old_buffer != bufp->buffer) \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1644 { \ |
| 941 | 1645 b = (b - old_buffer) + bufp->buffer; \ |
| 1646 begalt = (begalt - old_buffer) + bufp->buffer; \ | |
| 1647 if (fixup_alt_jump) \ | |
| 1648 fixup_alt_jump = (fixup_alt_jump - old_buffer) + bufp->buffer;\ | |
| 1649 if (laststart) \ | |
| 1650 laststart = (laststart - old_buffer) + bufp->buffer; \ | |
| 1651 if (pending_exact) \ | |
| 1652 pending_exact = (pending_exact - old_buffer) + bufp->buffer; \ | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1653 } \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1654 } while (0) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1655 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1656 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1657 /* Since we have one byte reserved for the register number argument to |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1658 {start,stop}_memory, the maximum number of groups we can report |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1659 things about is what fits in that byte. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1660 #define MAX_REGNUM 255 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1661 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1662 /* But patterns can have more than `MAX_REGNUM' registers. We just |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1663 ignore the excess. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1664 typedef unsigned regnum_t; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1665 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1666 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1667 /* Macros for the compile stack. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1668 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1669 /* Since offsets can go either forwards or backwards, this type needs to |
| 941 | 1670 be able to hold values from -(MAX_BUF_SIZE - 1) to MAX_BUF_SIZE - 1. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1671 typedef int pattern_offset_t; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1672 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1673 typedef struct |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1674 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1675 pattern_offset_t begalt_offset; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1676 pattern_offset_t fixup_alt_jump; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1677 pattern_offset_t inner_group_offset; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
1678 pattern_offset_t laststart_offset; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1679 regnum_t regnum; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1680 } compile_stack_elt_t; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1681 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1682 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1683 typedef struct |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1684 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1685 compile_stack_elt_t *stack; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1686 unsigned size; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1687 unsigned avail; /* Offset of next open position. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1688 } compile_stack_type; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1689 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1690 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1691 #define INIT_COMPILE_STACK_SIZE 32 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1692 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1693 #define COMPILE_STACK_EMPTY (compile_stack.avail == 0) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
1694 #define COMPILE_STACK_FULL (compile_stack.avail == compile_stack.size) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
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diff
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1695 |
| 941 | 1696 /* The next available element. */ |
|
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1697 #define COMPILE_STACK_TOP (compile_stack.stack[compile_stack.avail]) |
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1698 |
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1699 |
| 939 | 1700 /* Structure to manage work area for range table. */ |
| 1701 struct range_table_work_area | |
| 1702 { | |
| 1703 int *table; /* actual work area. */ | |
| 1704 int allocated; /* allocated size for work area in bytes. */ | |
| 941 | 1705 int used; /* actually used size in words. */ |
| 939 | 1706 }; |
| 1707 | |
| 1708 /* Make sure that WORK_AREA can hold more N multibyte characters. */ | |
| 1709 #define EXTEND_RANGE_TABLE_WORK_AREA(work_area, n) \ | |
| 1710 do { \ | |
| 1711 if (((work_area).used + (n)) * sizeof (int) > (work_area).allocated) \ | |
| 1712 { \ | |
| 1713 (work_area).allocated += 16 * sizeof (int); \ | |
| 1714 if ((work_area).table) \ | |
| 1715 (work_area).table \ | |
| 1716 = (int *) realloc ((work_area).table, (work_area).allocated); \ | |
| 1717 else \ | |
| 1718 (work_area).table \ | |
| 1719 = (int *) malloc ((work_area).allocated); \ | |
| 1720 if ((work_area).table == 0) \ | |
| 1721 FREE_STACK_RETURN (REG_ESPACE); \ | |
| 1722 } \ | |
| 1723 } while (0) | |
| 1724 | |
| 1725 /* Set a range (RANGE_START, RANGE_END) to WORK_AREA. */ | |
| 1726 #define SET_RANGE_TABLE_WORK_AREA(work_area, range_start, range_end) \ | |
| 1727 do { \ | |
| 1728 EXTEND_RANGE_TABLE_WORK_AREA ((work_area), 2); \ | |
| 1729 (work_area).table[(work_area).used++] = (range_start); \ | |
| 1730 (work_area).table[(work_area).used++] = (range_end); \ | |
| 1731 } while (0) | |
| 1732 | |
| 941 | 1733 /* Free allocated memory for WORK_AREA. */ |
| 939 | 1734 #define FREE_RANGE_TABLE_WORK_AREA(work_area) \ |
| 1735 do { \ | |
| 1736 if ((work_area).table) \ | |
| 1737 free ((work_area).table); \ | |
| 1738 } while (0) | |
| 1739 | |
| 1740 #define CLEAR_RANGE_TABLE_WORK_USED(work_area) ((work_area).used = 0) | |
| 1741 #define RANGE_TABLE_WORK_USED(work_area) ((work_area).used) | |
| 1742 #define RANGE_TABLE_WORK_ELT(work_area, i) ((work_area).table[i]) | |
| 1743 | |
| 1744 | |
|
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1745 /* Set the bit for character C in a list. */ |
| 941 | 1746 #define SET_LIST_BIT(c) \ |
| 1747 (b[((unsigned char) (c)) / BYTEWIDTH] \ | |
|
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1748 |= 1 << (((unsigned char) c) % BYTEWIDTH)) |
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1749 |
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1750 |
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|
1751 /* Get the next unsigned number in the uncompiled pattern. */ |
| 941 | 1752 #define GET_UNSIGNED_NUMBER(num) \ |
|
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|
1753 { if (p != pend) \ |
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|
1754 { \ |
| 941 | 1755 PATFETCH (c); \ |
| 1756 while (ISDIGIT (c)) \ | |
| 1757 { \ | |
| 1758 if (num < 0) \ | |
| 1759 num = 0; \ | |
| 1760 num = num * 10 + c - '0'; \ | |
| 1761 if (p == pend) \ | |
| 1762 break; \ | |
| 1763 PATFETCH (c); \ | |
| 1764 } \ | |
| 1765 } \ | |
|
515
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|
1766 } |
|
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|
1767 |
|
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|
1768 #define CHAR_CLASS_MAX_LENGTH 6 /* Namely, `xdigit'. */ |
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1769 |
|
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|
1770 #define IS_CHAR_CLASS(string) \ |
|
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|
1771 (STREQ (string, "alpha") || STREQ (string, "upper") \ |
|
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1772 || STREQ (string, "lower") || STREQ (string, "digit") \ |
|
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|
1773 || STREQ (string, "alnum") || STREQ (string, "xdigit") \ |
|
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|
1774 || STREQ (string, "space") || STREQ (string, "print") \ |
|
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1775 || STREQ (string, "punct") || STREQ (string, "graph") \ |
|
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|
1776 || STREQ (string, "cntrl") || STREQ (string, "blank")) |
|
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|
1777 |
|
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|
1778 #ifndef MATCH_MAY_ALLOCATE |
|
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|
1779 |
|
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|
1780 /* If we cannot allocate large objects within re_match_2_internal, |
|
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|
1781 we make the fail stack and register vectors global. |
|
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|
1782 The fail stack, we grow to the maximum size when a regexp |
|
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|
1783 is compiled. |
|
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Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
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|
1784 The register vectors, we adjust in size each time we |
|
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|
1785 compile a regexp, according to the number of registers it needs. */ |
|
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|
1786 |
|
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|
1787 static fail_stack_type fail_stack; |
|
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|
1788 |
|
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|
1789 /* Size with which the following vectors are currently allocated. |
|
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|
1790 That is so we can make them bigger as needed, |
| 941 | 1791 but never make them smaller. */ |
|
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|
1792 static int regs_allocated_size; |
|
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|
1793 |
| 941 | 1794 static const char ** regstart, ** regend; |
|
441
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|
1795 static const char ** old_regstart, ** old_regend; |
|
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|
1796 static const char **best_regstart, **best_regend; |
|
515
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|
1797 static register_info_type *reg_info; |
|
441
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|
1798 static const char **reg_dummy; |
|
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|
1799 static register_info_type *reg_info_dummy; |
|
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|
1800 |
|
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|
1801 /* Make the register vectors big enough for NUM_REGS registers, |
| 941 | 1802 but don't make them smaller. */ |
|
441
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|
1803 |
|
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|
1804 static |
|
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|
1805 regex_grow_registers (num_regs) |
|
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|
1806 int num_regs; |
|
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|
1807 { |
|
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|
1808 if (num_regs > regs_allocated_size) |
|
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|
1809 { |
|
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|
1810 RETALLOC_IF (regstart, num_regs, const char *); |
|
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|
1811 RETALLOC_IF (regend, num_regs, const char *); |
|
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|
1812 RETALLOC_IF (old_regstart, num_regs, const char *); |
|
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|
1813 RETALLOC_IF (old_regend, num_regs, const char *); |
|
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|
1814 RETALLOC_IF (best_regstart, num_regs, const char *); |
|
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|
1815 RETALLOC_IF (best_regend, num_regs, const char *); |
|
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1816 RETALLOC_IF (reg_info, num_regs, register_info_type); |
|
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1817 RETALLOC_IF (reg_dummy, num_regs, const char *); |
|
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|
1818 RETALLOC_IF (reg_info_dummy, num_regs, register_info_type); |
|
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|
1819 |
|
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1820 regs_allocated_size = num_regs; |
|
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1821 } |
|
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1822 } |
|
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1823 |
|
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1824 #endif /* not MATCH_MAY_ALLOCATE */ |
|
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1825 |
|
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|
1826 /* `regex_compile' compiles PATTERN (of length SIZE) according to SYNTAX. |
|
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1827 Returns one of error codes defined in `regex.h', or zero for success. |
|
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|
1828 |
|
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1829 Assumes the `allocated' (and perhaps `buffer') and `translate' |
|
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1830 fields are set in BUFP on entry. |
|
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1831 |
|
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1832 If it succeeds, results are put in BUFP (if it returns an error, the |
|
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1833 contents of BUFP are undefined): |
|
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1834 `buffer' is the compiled pattern; |
|
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1835 `syntax' is set to SYNTAX; |
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1836 `used' is set to the length of the compiled pattern; |
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1837 `fastmap_accurate' is zero; |
|
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1838 `re_nsub' is the number of subexpressions in PATTERN; |
|
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|
1839 `not_bol' and `not_eol' are zero; |
|
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|
1840 |
|
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|
1841 The `fastmap' and `newline_anchor' fields are neither |
|
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|
1842 examined nor set. */ |
|
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1843 |
|
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1844 /* Return, freeing storage we allocated. */ |
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1845 #define FREE_STACK_RETURN(value) \ |
| 939 | 1846 do { \ |
| 1847 FREE_RANGE_TABLE_WORK_AREA (range_table_work); \ | |
| 1848 free (compile_stack.stack); \ | |
| 1849 return value; \ | |
| 1850 } while (0) | |
|
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1851 |
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1852 static reg_errcode_t |
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1853 regex_compile (pattern, size, syntax, bufp) |
|
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1854 const char *pattern; |
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1855 int size; |
|
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1856 reg_syntax_t syntax; |
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1857 struct re_pattern_buffer *bufp; |
|
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1858 { |
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1859 /* We fetch characters from PATTERN here. Even though PATTERN is |
|
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1860 `char *' (i.e., signed), we declare these variables as unsigned, so |
|
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1861 they can be reliably used as array indices. */ |
| 939 | 1862 register unsigned int c, c1; |
|
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1863 |
|
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1864 /* A random temporary spot in PATTERN. */ |
|
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1865 const char *p1; |
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1866 |
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1867 /* Points to the end of the buffer, where we should append. */ |
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1868 register unsigned char *b; |
|
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1869 |
|
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1870 /* Keeps track of unclosed groups. */ |
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1871 compile_stack_type compile_stack; |
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1872 |
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1873 /* Points to the current (ending) position in the pattern. */ |
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1874 const char *p = pattern; |
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1875 const char *pend = pattern + size; |
|
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1876 |
|
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1877 /* How to translate the characters in the pattern. */ |
|
501
f29b13c2cefd
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1878 RE_TRANSLATE_TYPE translate = bufp->translate; |
|
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1879 |
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1880 /* Address of the count-byte of the most recently inserted `exactn' |
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1881 command. This makes it possible to tell if a new exact-match |
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1882 character can be added to that command or if the character requires |
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1883 a new `exactn' command. */ |
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1884 unsigned char *pending_exact = 0; |
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1885 |
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1886 /* Address of start of the most recently finished expression. |
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1887 This tells, e.g., postfix * where to find the start of its |
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1888 operand. Reset at the beginning of groups and alternatives. */ |
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1889 unsigned char *laststart = 0; |
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1890 |
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1891 /* Address of beginning of regexp, or inside of last group. */ |
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1892 unsigned char *begalt; |
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1893 |
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1894 /* Place in the uncompiled pattern (i.e., the {) to |
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1895 which to go back if the interval is invalid. */ |
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1896 const char *beg_interval; |
|
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1897 |
|
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1898 /* Address of the place where a forward jump should go to the end of |
| 941 | 1899 the containing expression. Each alternative of an `or' -- except the |
|
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1900 last -- ends with a forward jump of this sort. */ |
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1901 unsigned char *fixup_alt_jump = 0; |
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1902 |
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1903 /* Counts open-groups as they are encountered. Remembered for the |
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1904 matching close-group on the compile stack, so the same register |
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1905 number is put in the stop_memory as the start_memory. */ |
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1906 regnum_t regnum = 0; |
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1907 |
| 939 | 1908 /* Work area for range table of charset. */ |
| 1909 struct range_table_work_area range_table_work; | |
| 1910 | |
|
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1911 #ifdef DEBUG |
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1912 DEBUG_PRINT1 ("\nCompiling pattern: "); |
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1913 if (debug) |
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1914 { |
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1915 unsigned debug_count; |
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1916 |
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1917 for (debug_count = 0; debug_count < size; debug_count++) |
| 941 | 1918 putchar (pattern[debug_count]); |
|
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1919 putchar ('\n'); |
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1920 } |
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1921 #endif /* DEBUG */ |
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1922 |
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1923 /* Initialize the compile stack. */ |
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1924 compile_stack.stack = TALLOC (INIT_COMPILE_STACK_SIZE, compile_stack_elt_t); |
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1925 if (compile_stack.stack == NULL) |
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1926 return REG_ESPACE; |
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1927 |
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1928 compile_stack.size = INIT_COMPILE_STACK_SIZE; |
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1929 compile_stack.avail = 0; |
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1930 |
| 939 | 1931 range_table_work.table = 0; |
| 1932 range_table_work.allocated = 0; | |
| 1933 | |
|
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1934 /* Initialize the pattern buffer. */ |
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1935 bufp->syntax = syntax; |
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1936 bufp->fastmap_accurate = 0; |
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1937 bufp->not_bol = bufp->not_eol = 0; |
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1938 |
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1939 /* Set `used' to zero, so that if we return an error, the pattern |
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1940 printer (for debugging) will think there's no pattern. We reset it |
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1941 at the end. */ |
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1942 bufp->used = 0; |
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1943 |
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1944 /* Always count groups, whether or not bufp->no_sub is set. */ |
|
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1945 bufp->re_nsub = 0; |
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1946 |
| 939 | 1947 #ifdef emacs |
| 1948 /* bufp->multibyte is set before regex_compile is called, so don't alter | |
| 1949 it. */ | |
| 1950 #else /* not emacs */ | |
| 1951 /* Nothing is recognized as a multibyte character. */ | |
| 1952 bufp->multibyte = 0; | |
| 1953 #endif | |
| 1954 | |
|
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1955 #if !defined (emacs) && !defined (SYNTAX_TABLE) |
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1956 /* Initialize the syntax table. */ |
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1957 init_syntax_once (); |
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1958 #endif |
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1959 |
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1960 if (bufp->allocated == 0) |
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1961 { |
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1962 if (bufp->buffer) |
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1963 { /* If zero allocated, but buffer is non-null, try to realloc |
| 941 | 1964 enough space. This loses if buffer's address is bogus, but |
| 1965 that is the user's responsibility. */ | |
| 1966 RETALLOC (bufp->buffer, INIT_BUF_SIZE, unsigned char); | |
| 1967 } | |
|
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1968 else |
| 941 | 1969 { /* Caller did not allocate a buffer. Do it for them. */ |
| 1970 bufp->buffer = TALLOC (INIT_BUF_SIZE, unsigned char); | |
| 1971 } | |
|
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1972 if (!bufp->buffer) FREE_STACK_RETURN (REG_ESPACE); |
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1973 |
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1974 bufp->allocated = INIT_BUF_SIZE; |
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1975 } |
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1976 |
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1977 begalt = b = bufp->buffer; |
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1978 |
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1979 /* Loop through the uncompiled pattern until we're at the end. */ |
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1980 while (p != pend) |
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1981 { |
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1982 PATFETCH (c); |
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1983 |
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1984 switch (c) |
| 941 | 1985 { |
| 1986 case '^': | |
| 1987 { | |
| 1988 if ( /* If at start of pattern, it's an operator. */ | |
| 1989 p == pattern + 1 | |
| 1990 /* If context independent, it's an operator. */ | |
| 1991 || syntax & RE_CONTEXT_INDEP_ANCHORS | |
| 1992 /* Otherwise, depends on what's come before. */ | |
| 1993 || at_begline_loc_p (pattern, p, syntax)) | |
| 1994 BUF_PUSH (begline); | |
| 1995 else | |
| 1996 goto normal_char; | |
| 1997 } | |
| 1998 break; | |
| 1999 | |
| 2000 | |
| 2001 case '$': | |
| 2002 { | |
| 2003 if ( /* If at end of pattern, it's an operator. */ | |
| 2004 p == pend | |
| 2005 /* If context independent, it's an operator. */ | |
| 2006 || syntax & RE_CONTEXT_INDEP_ANCHORS | |
| 2007 /* Otherwise, depends on what's next. */ | |
| 2008 || at_endline_loc_p (p, pend, syntax)) | |
| 2009 BUF_PUSH (endline); | |
| 2010 else | |
| 2011 goto normal_char; | |
| 2012 } | |
| 2013 break; | |
|
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2014 |
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2015 |
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2016 case '+': |
| 941 | 2017 case '?': |
| 2018 if ((syntax & RE_BK_PLUS_QM) | |
| 2019 || (syntax & RE_LIMITED_OPS)) | |
| 2020 goto normal_char; | |
| 2021 handle_plus: | |
| 2022 case '*': | |
| 2023 /* If there is no previous pattern... */ | |
| 2024 if (!laststart) | |
| 2025 { | |
| 2026 if (syntax & RE_CONTEXT_INVALID_OPS) | |
| 2027 FREE_STACK_RETURN (REG_BADRPT); | |
| 2028 else if (!(syntax & RE_CONTEXT_INDEP_OPS)) | |
| 2029 goto normal_char; | |
| 2030 } | |
| 2031 | |
| 2032 { | |
| 2033 /* Are we optimizing this jump? */ | |
| 2034 boolean keep_string_p = false; | |
| 2035 | |
| 2036 /* 1 means zero (many) matches is allowed. */ | |
| 2037 char zero_times_ok = 0, many_times_ok = 0; | |
| 2038 | |
| 2039 /* If there is a sequence of repetition chars, collapse it | |
| 2040 down to just one (the right one). We can't combine | |
| 2041 interval operators with these because of, e.g., `a{2}*', | |
| 2042 which should only match an even number of `a's. */ | |
| 2043 | |
| 2044 for (;;) | |
| 2045 { | |
| 2046 zero_times_ok |= c != '+'; | |
| 2047 many_times_ok |= c != '?'; | |
| 2048 | |
| 2049 if (p == pend) | |
| 2050 break; | |
| 2051 | |
| 2052 PATFETCH (c); | |
| 2053 | |
| 2054 if (c == '*' | |
| 2055 || (!(syntax & RE_BK_PLUS_QM) && (c == '+' || c == '?'))) | |
| 2056 ; | |
| 2057 | |
| 2058 else if (syntax & RE_BK_PLUS_QM && c == '\\') | |
| 2059 { | |
| 2060 if (p == pend) FREE_STACK_RETURN (REG_EESCAPE); | |
| 2061 | |
| 2062 PATFETCH (c1); | |
| 2063 if (!(c1 == '+' || c1 == '?')) | |
| 2064 { | |
| 2065 PATUNFETCH; | |
| 2066 PATUNFETCH; | |
| 2067 break; | |
| 2068 } | |
| 2069 | |
| 2070 c = c1; | |
| 2071 } | |
| 2072 else | |
| 2073 { | |
| 2074 PATUNFETCH; | |
| 2075 break; | |
| 2076 } | |
| 2077 | |
| 2078 /* If we get here, we found another repeat character. */ | |
| 2079 } | |
| 2080 | |
| 2081 /* Star, etc. applied to an empty pattern is equivalent | |
| 2082 to an empty pattern. */ | |
| 2083 if (!laststart) | |
| 2084 break; | |
| 2085 | |
| 2086 /* Now we know whether or not zero matches is allowed | |
| 2087 and also whether or not two or more matches is allowed. */ | |
| 2088 if (many_times_ok) | |
| 2089 { /* More than one repetition is allowed, so put in at the | |
| 2090 end a backward relative jump from `b' to before the next | |
| 2091 jump we're going to put in below (which jumps from | |
| 2092 laststart to after this jump). | |
| 2093 | |
| 2094 But if we are at the `*' in the exact sequence `.*\n', | |
| 2095 insert an unconditional jump backwards to the ., | |
| 2096 instead of the beginning of the loop. This way we only | |
| 2097 push a failure point once, instead of every time | |
| 2098 through the loop. */ | |
| 2099 assert (p - 1 > pattern); | |
| 2100 | |
| 2101 /* Allocate the space for the jump. */ | |
| 2102 GET_BUFFER_SPACE (3); | |
| 2103 | |
| 2104 /* We know we are not at the first character of the pattern, | |
| 2105 because laststart was nonzero. And we've already | |
| 2106 incremented `p', by the way, to be the character after | |
| 2107 the `*'. Do we have to do something analogous here | |
| 2108 for null bytes, because of RE_DOT_NOT_NULL? */ | |
| 2109 if (TRANSLATE (*(p - 2)) == TRANSLATE ('.') | |
|
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2110 && zero_times_ok |
| 941 | 2111 && p < pend && TRANSLATE (*p) == TRANSLATE ('\n') |
| 2112 && !(syntax & RE_DOT_NEWLINE)) | |
| 2113 { /* We have .*\n. */ | |
| 2114 STORE_JUMP (jump, b, laststart); | |
| 2115 keep_string_p = true; | |
| 2116 } | |
| 2117 else | |
| 2118 /* Anything else. */ | |
| 2119 STORE_JUMP (maybe_pop_jump, b, laststart - 3); | |
| 2120 | |
| 2121 /* We've added more stuff to the buffer. */ | |
| 2122 b += 3; | |
| 2123 } | |
| 2124 | |
| 2125 /* On failure, jump from laststart to b + 3, which will be the | |
| 2126 end of the buffer after this jump is inserted. */ | |
| 2127 GET_BUFFER_SPACE (3); | |
| 2128 INSERT_JUMP (keep_string_p ? on_failure_keep_string_jump | |
| 2129 : on_failure_jump, | |
| 2130 laststart, b + 3); | |
| 2131 pending_exact = 0; | |
| 2132 b += 3; | |
| 2133 | |
| 2134 if (!zero_times_ok) | |
| 2135 { | |
| 2136 /* At least one repetition is required, so insert a | |
| 2137 `dummy_failure_jump' before the initial | |
| 2138 `on_failure_jump' instruction of the loop. This | |
| 2139 effects a skip over that instruction the first time | |
| 2140 we hit that loop. */ | |
| 2141 GET_BUFFER_SPACE (3); | |
| 2142 INSERT_JUMP (dummy_failure_jump, laststart, laststart + 6); | |
| 2143 b += 3; | |
| 2144 } | |
| 2145 } | |
|
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2146 break; |
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2147 |
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2148 |
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2149 case '.': |
| 941 | 2150 laststart = b; |
| 2151 BUF_PUSH (anychar); | |
| 2152 break; | |
| 2153 | |
| 2154 | |
| 2155 case '[': | |
| 2156 { | |
| 939 | 2157 CLEAR_RANGE_TABLE_WORK_USED (range_table_work); |
| 2158 | |
| 941 | 2159 if (p == pend) FREE_STACK_RETURN (REG_EBRACK); |
| 2160 | |
| 2161 /* Ensure that we have enough space to push a charset: the | |
| 2162 opcode, the length count, and the bitset; 34 bytes in all. */ | |
|
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2163 GET_BUFFER_SPACE (34); |
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2164 |
| 941 | 2165 laststart = b; |
| 2166 | |
| 2167 /* We test `*p == '^' twice, instead of using an if | |
| 2168 statement, so we only need one BUF_PUSH. */ | |
| 2169 BUF_PUSH (*p == '^' ? charset_not : charset); | |
| 2170 if (*p == '^') | |
| 2171 p++; | |
| 2172 | |
| 2173 /* Remember the first position in the bracket expression. */ | |
| 2174 p1 = p; | |
| 2175 | |
| 2176 /* Push the number of bytes in the bitmap. */ | |
| 2177 BUF_PUSH ((1 << BYTEWIDTH) / BYTEWIDTH); | |
| 2178 | |
| 2179 /* Clear the whole map. */ | |
| 2180 bzero (b, (1 << BYTEWIDTH) / BYTEWIDTH); | |
| 2181 | |
| 2182 /* charset_not matches newline according to a syntax bit. */ | |
| 2183 if ((re_opcode_t) b[-2] == charset_not | |
| 2184 && (syntax & RE_HAT_LISTS_NOT_NEWLINE)) | |
| 2185 SET_LIST_BIT ('\n'); | |
| 2186 | |
| 2187 /* Read in characters and ranges, setting map bits. */ | |
| 2188 for (;;) | |
| 2189 { | |
| 939 | 2190 int len; |
| 2191 boolean escaped_char = false; | |
| 2192 | |
| 941 | 2193 if (p == pend) FREE_STACK_RETURN (REG_EBRACK); |
| 2194 | |
| 2195 PATFETCH (c); | |
| 2196 | |
| 2197 /* \ might escape characters inside [...] and [^...]. */ | |
| 2198 if ((syntax & RE_BACKSLASH_ESCAPE_IN_LISTS) && c == '\\') | |
| 2199 { | |
| 2200 if (p == pend) FREE_STACK_RETURN (REG_EESCAPE); | |
| 679 | 2201 |
| 2202 PATFETCH (c); | |
| 939 | 2203 escaped_char = true; |
| 941 | 2204 } |
| 939 | 2205 else |
| 2206 { | |
| 992 | 2207 /* Could be the end of the bracket expression. If it's |
| 2208 not (i.e., when the bracket expression is `[]' so | |
| 2209 far), the ']' character bit gets set way below. */ | |
| 2210 if (c == ']' && p != p1 + 1) | |
| 2211 break; | |
| 941 | 2212 } |
| 939 | 2213 |
| 2214 /* If C indicates start of multibyte char, get the | |
| 2215 actual character code in C, and set the pattern | |
| 2216 pointer P to the next character boundary. */ | |
| 2217 if (bufp->multibyte && BASE_LEADING_CODE_P (c)) | |
| 2218 { | |
| 2219 PATUNFETCH; | |
| 2220 c = STRING_CHAR_AND_LENGTH (p, pend - p, len); | |
| 2221 p += len; | |
| 941 | 2222 } |
| 939 | 2223 /* What should we do for the character which is |
| 2224 greater than 0x7F, but not BASE_LEADING_CODE_P? | |
| 2225 XXX */ | |
| 2226 | |
| 941 | 2227 /* See if we're at the beginning of a possible character |
| 2228 class. */ | |
| 939 | 2229 |
| 2230 else if (!escaped_char && | |
| 2231 syntax & RE_CHAR_CLASSES && c == '[' && *p == ':') | |
| 992 | 2232 { |
| 2233 /* Leave room for the null. */ | |
| 941 | 2234 char str[CHAR_CLASS_MAX_LENGTH + 1]; |
| 2235 | |
| 2236 PATFETCH (c); | |
| 2237 c1 = 0; | |
| 2238 | |
| 2239 /* If pattern is `[[:'. */ | |
| 2240 if (p == pend) FREE_STACK_RETURN (REG_EBRACK); | |
| 2241 | |
| 2242 for (;;) | |
| 2243 { | |
| 2244 PATFETCH (c); | |
| 2245 if (c == ':' || c == ']' || p == pend | |
| 2246 || c1 == CHAR_CLASS_MAX_LENGTH) | |
| 2247 break; | |
| 2248 str[c1++] = c; | |
| 2249 } | |
| 2250 str[c1] = '\0'; | |
| 939 | 2251 |
| 2252 /* If isn't a word bracketed by `[:' and `:]': | |
| 2253 undo the ending character, the letters, and | |
| 2254 leave the leading `:' and `[' (but set bits for | |
| 2255 them). */ | |
| 941 | 2256 if (c == ':' && *p == ']') |
| 2257 { | |
| 2258 int ch; | |
| 2259 boolean is_alnum = STREQ (str, "alnum"); | |
| 2260 boolean is_alpha = STREQ (str, "alpha"); | |
| 2261 boolean is_blank = STREQ (str, "blank"); | |
| 2262 boolean is_cntrl = STREQ (str, "cntrl"); | |
| 2263 boolean is_digit = STREQ (str, "digit"); | |
| 2264 boolean is_graph = STREQ (str, "graph"); | |
| 2265 boolean is_lower = STREQ (str, "lower"); | |
| 2266 boolean is_print = STREQ (str, "print"); | |
| 2267 boolean is_punct = STREQ (str, "punct"); | |
| 2268 boolean is_space = STREQ (str, "space"); | |
| 2269 boolean is_upper = STREQ (str, "upper"); | |
| 2270 boolean is_xdigit = STREQ (str, "xdigit"); | |
| 2271 | |
| 2272 if (!IS_CHAR_CLASS (str)) | |
|
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2273 FREE_STACK_RETURN (REG_ECTYPE); |
|
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|
2274 |
| 941 | 2275 /* Throw away the ] at the end of the character |
| 2276 class. */ | |
| 2277 PATFETCH (c); | |
| 2278 | |
| 2279 if (p == pend) FREE_STACK_RETURN (REG_EBRACK); | |
| 2280 | |
| 2281 for (ch = 0; ch < 1 << BYTEWIDTH; ch++) | |
| 2282 { | |
|
692
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|
2283 int translated = TRANSLATE (ch); |
|
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2284 /* This was split into 3 if's to |
|
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|
2285 avoid an arbitrary limit in some compiler. */ |
| 941 | 2286 if ( (is_alnum && ISALNUM (ch)) |
| 2287 || (is_alpha && ISALPHA (ch)) | |
| 2288 || (is_blank && ISBLANK (ch)) | |
| 2289 || (is_cntrl && ISCNTRL (ch))) | |
|
692
1036844e8833
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|
2290 SET_LIST_BIT (translated); |
|
441
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|
2291 if ( (is_digit && ISDIGIT (ch)) |
| 941 | 2292 || (is_graph && ISGRAPH (ch)) |
| 2293 || (is_lower && ISLOWER (ch)) | |
| 2294 || (is_print && ISPRINT (ch))) | |
|
692
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|
2295 SET_LIST_BIT (translated); |
|
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2296 if ( (is_punct && ISPUNCT (ch)) |
| 941 | 2297 || (is_space && ISSPACE (ch)) |
| 2298 || (is_upper && ISUPPER (ch)) | |
| 2299 || (is_xdigit && ISXDIGIT (ch))) | |
|
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|
2300 SET_LIST_BIT (translated); |
| 941 | 2301 } |
| 939 | 2302 |
| 2303 /* Repeat the loop. */ | |
| 2304 continue; | |
| 941 | 2305 } |
| 2306 else | |
| 2307 { | |
| 2308 c1++; | |
| 2309 while (c1--) | |
| 2310 PATUNFETCH; | |
| 2311 SET_LIST_BIT ('['); | |
| 939 | 2312 |
| 2313 /* Because the `:' may starts the range, we | |
| 2314 can't simply set bit and repeat the loop. | |
| 941 | 2315 Instead, just set it to C and handle below. */ |
| 939 | 2316 c = ':'; |
| 941 | 2317 } |
| 2318 } | |
| 939 | 2319 |
| 2320 if (p < pend && p[0] == '-' && p[1] != ']') | |
| 2321 { | |
| 2322 | |
| 2323 /* Discard the `-'. */ | |
| 2324 PATFETCH (c1); | |
| 2325 | |
| 2326 /* Fetch the character which ends the range. */ | |
| 2327 PATFETCH (c1); | |
| 2328 if (bufp->multibyte && BASE_LEADING_CODE_P (c1)) | |
| 2329 { | |
| 2330 PATUNFETCH; | |
| 2331 c1 = STRING_CHAR_AND_LENGTH (p, pend - p, len); | |
| 2332 p += len; | |
| 2333 } | |
| 2334 | |
| 2335 if (!SAME_CHARSET_P (c, c1)) | |
| 2336 FREE_STACK_RETURN (REG_ERANGE); | |
| 2337 } | |
| 941 | 2338 else |
| 939 | 2339 /* Range from C to C. */ |
| 2340 c1 = c; | |
| 2341 | |
| 2342 /* Set the range ... */ | |
| 2343 if (SINGLE_BYTE_CHAR_P (c)) | |
| 2344 /* ... into bitmap. */ | |
| 941 | 2345 { |
| 939 | 2346 unsigned this_char; |
| 2347 int range_start = c, range_end = c1; | |
| 2348 | |
| 2349 /* If the start is after the end, the range is empty. */ | |
| 2350 if (range_start > range_end) | |
| 2351 { | |
| 2352 if (syntax & RE_NO_EMPTY_RANGES) | |
| 2353 FREE_STACK_RETURN (REG_ERANGE); | |
| 2354 /* Else, repeat the loop. */ | |
| 679 | 2355 } |
| 2356 else | |
| 2357 { | |
| 939 | 2358 for (this_char = range_start; this_char <= range_end; |
| 2359 this_char++) | |
| 2360 SET_LIST_BIT (TRANSLATE (this_char)); | |
| 941 | 2361 } |
| 2362 } | |
| 679 | 2363 else |
| 939 | 2364 /* ... into range table. */ |
| 2365 SET_RANGE_TABLE_WORK_AREA (range_table_work, c, c1); | |
| 679 | 2366 } |
| 2367 | |
| 941 | 2368 /* Discard any (non)matching list bytes that are all 0 at the |
| 2369 end of the map. Decrease the map-length byte too. */ | |
| 2370 while ((int) b[-1] > 0 && b[b[-1] - 1] == 0) | |
| 2371 b[-1]--; | |
| 2372 b += b[-1]; | |
| 939 | 2373 |
| 2374 /* Build real range table from work area. */ | |
| 2375 if (RANGE_TABLE_WORK_USED (range_table_work)) | |
| 2376 { | |
| 2377 int i; | |
| 2378 int used = RANGE_TABLE_WORK_USED (range_table_work); | |
| 2379 | |
| 2380 /* Allocate space for COUNT + RANGE_TABLE. Needs two | |
| 941 | 2381 bytes for COUNT and three bytes for each character. */ |
| 939 | 2382 GET_BUFFER_SPACE (2 + used * 3); |
| 2383 | |
| 2384 /* Indicate the existence of range table. */ | |
| 2385 laststart[1] |= 0x80; | |
| 2386 | |
| 2387 STORE_NUMBER_AND_INCR (b, used / 2); | |
| 2388 for (i = 0; i < used; i++) | |
| 2389 STORE_CHARACTER_AND_INCR | |
| 2390 (b, RANGE_TABLE_WORK_ELT (range_table_work, i)); | |
| 2391 } | |
| 941 | 2392 } |
| 2393 break; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2394 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2395 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2396 case '(': |
| 941 | 2397 if (syntax & RE_NO_BK_PARENS) |
| 2398 goto handle_open; | |
| 2399 else | |
| 2400 goto normal_char; | |
| 2401 | |
| 2402 | |
| 2403 case ')': | |
| 2404 if (syntax & RE_NO_BK_PARENS) | |
| 2405 goto handle_close; | |
| 2406 else | |
| 2407 goto normal_char; | |
| 2408 | |
| 2409 | |
| 2410 case '\n': | |
| 2411 if (syntax & RE_NEWLINE_ALT) | |
| 2412 goto handle_alt; | |
| 2413 else | |
| 2414 goto normal_char; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2415 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2416 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2417 case '|': |
| 941 | 2418 if (syntax & RE_NO_BK_VBAR) |
| 2419 goto handle_alt; | |
| 2420 else | |
| 2421 goto normal_char; | |
| 2422 | |
| 2423 | |
| 2424 case '{': | |
| 2425 if (syntax & RE_INTERVALS && syntax & RE_NO_BK_BRACES) | |
| 2426 goto handle_interval; | |
| 2427 else | |
| 2428 goto normal_char; | |
| 2429 | |
| 2430 | |
| 2431 case '\\': | |
| 2432 if (p == pend) FREE_STACK_RETURN (REG_EESCAPE); | |
| 2433 | |
| 2434 /* Do not translate the character after the \, so that we can | |
| 2435 distinguish, e.g., \B from \b, even if we normally would | |
| 2436 translate, e.g., B to b. */ | |
| 2437 PATFETCH_RAW (c); | |
| 2438 | |
| 2439 switch (c) | |
| 2440 { | |
| 2441 case '(': | |
| 2442 if (syntax & RE_NO_BK_PARENS) | |
| 2443 goto normal_backslash; | |
| 2444 | |
| 2445 handle_open: | |
| 2446 bufp->re_nsub++; | |
| 2447 regnum++; | |
| 2448 | |
| 2449 if (COMPILE_STACK_FULL) | |
| 2450 { | |
| 2451 RETALLOC (compile_stack.stack, compile_stack.size << 1, | |
| 2452 compile_stack_elt_t); | |
| 2453 if (compile_stack.stack == NULL) return REG_ESPACE; | |
| 2454 | |
| 2455 compile_stack.size <<= 1; | |
| 2456 } | |
| 2457 | |
| 2458 /* These are the values to restore when we hit end of this | |
| 2459 group. They are all relative offsets, so that if the | |
| 2460 whole pattern moves because of realloc, they will still | |
| 2461 be valid. */ | |
| 2462 COMPILE_STACK_TOP.begalt_offset = begalt - bufp->buffer; | |
| 2463 COMPILE_STACK_TOP.fixup_alt_jump | |
| 2464 = fixup_alt_jump ? fixup_alt_jump - bufp->buffer + 1 : 0; | |
| 2465 COMPILE_STACK_TOP.laststart_offset = b - bufp->buffer; | |
| 2466 COMPILE_STACK_TOP.regnum = regnum; | |
| 2467 | |
| 2468 /* We will eventually replace the 0 with the number of | |
| 2469 groups inner to this one. But do not push a | |
| 2470 start_memory for groups beyond the last one we can | |
| 2471 represent in the compiled pattern. */ | |
| 2472 if (regnum <= MAX_REGNUM) | |
| 2473 { | |
| 2474 COMPILE_STACK_TOP.inner_group_offset = b - bufp->buffer + 2; | |
| 2475 BUF_PUSH_3 (start_memory, regnum, 0); | |
| 2476 } | |
| 2477 | |
| 2478 compile_stack.avail++; | |
| 2479 | |
| 2480 fixup_alt_jump = 0; | |
| 2481 laststart = 0; | |
| 2482 begalt = b; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2483 /* If we've reached MAX_REGNUM groups, then this open |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2484 won't actually generate any code, so we'll have to |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2485 clear pending_exact explicitly. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2486 pending_exact = 0; |
| 941 | 2487 break; |
| 2488 | |
| 2489 | |
| 2490 case ')': | |
| 2491 if (syntax & RE_NO_BK_PARENS) goto normal_backslash; | |
| 2492 | |
| 2493 if (COMPILE_STACK_EMPTY) | |
| 2494 if (syntax & RE_UNMATCHED_RIGHT_PAREN_ORD) | |
| 2495 goto normal_backslash; | |
| 2496 else | |
| 2497 FREE_STACK_RETURN (REG_ERPAREN); | |
| 2498 | |
| 2499 handle_close: | |
| 2500 if (fixup_alt_jump) | |
| 2501 { /* Push a dummy failure point at the end of the | |
| 2502 alternative for a possible future | |
| 2503 `pop_failure_jump' to pop. See comments at | |
| 2504 `push_dummy_failure' in `re_match_2'. */ | |
| 2505 BUF_PUSH (push_dummy_failure); | |
| 2506 | |
| 2507 /* We allocated space for this jump when we assigned | |
| 2508 to `fixup_alt_jump', in the `handle_alt' case below. */ | |
| 2509 STORE_JUMP (jump_past_alt, fixup_alt_jump, b - 1); | |
| 2510 } | |
| 2511 | |
| 2512 /* See similar code for backslashed left paren above. */ | |
| 2513 if (COMPILE_STACK_EMPTY) | |
| 2514 if (syntax & RE_UNMATCHED_RIGHT_PAREN_ORD) | |
| 2515 goto normal_char; | |
| 2516 else | |
| 2517 FREE_STACK_RETURN (REG_ERPAREN); | |
| 2518 | |
| 2519 /* Since we just checked for an empty stack above, this | |
| 2520 ``can't happen''. */ | |
| 2521 assert (compile_stack.avail != 0); | |
| 2522 { | |
| 2523 /* We don't just want to restore into `regnum', because | |
| 2524 later groups should continue to be numbered higher, | |
| 2525 as in `(ab)c(de)' -- the second group is #2. */ | |
| 2526 regnum_t this_group_regnum; | |
| 2527 | |
| 2528 compile_stack.avail--; | |
| 2529 begalt = bufp->buffer + COMPILE_STACK_TOP.begalt_offset; | |
| 2530 fixup_alt_jump | |
| 2531 = COMPILE_STACK_TOP.fixup_alt_jump | |
| 2532 ? bufp->buffer + COMPILE_STACK_TOP.fixup_alt_jump - 1 | |
| 2533 : 0; | |
| 2534 laststart = bufp->buffer + COMPILE_STACK_TOP.laststart_offset; | |
| 2535 this_group_regnum = COMPILE_STACK_TOP.regnum; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2536 /* If we've reached MAX_REGNUM groups, then this open |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2537 won't actually generate any code, so we'll have to |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2538 clear pending_exact explicitly. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2539 pending_exact = 0; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2540 |
| 941 | 2541 /* We're at the end of the group, so now we know how many |
| 2542 groups were inside this one. */ | |
| 2543 if (this_group_regnum <= MAX_REGNUM) | |
| 2544 { | |
| 2545 unsigned char *inner_group_loc | |
| 2546 = bufp->buffer + COMPILE_STACK_TOP.inner_group_offset; | |
| 2547 | |
| 2548 *inner_group_loc = regnum - this_group_regnum; | |
| 2549 BUF_PUSH_3 (stop_memory, this_group_regnum, | |
| 2550 regnum - this_group_regnum); | |
| 2551 } | |
| 2552 } | |
| 2553 break; | |
| 2554 | |
| 2555 | |
| 2556 case '|': /* `\|'. */ | |
| 2557 if (syntax & RE_LIMITED_OPS || syntax & RE_NO_BK_VBAR) | |
| 2558 goto normal_backslash; | |
| 2559 handle_alt: | |
| 2560 if (syntax & RE_LIMITED_OPS) | |
| 2561 goto normal_char; | |
| 2562 | |
| 2563 /* Insert before the previous alternative a jump which | |
| 2564 jumps to this alternative if the former fails. */ | |
| 2565 GET_BUFFER_SPACE (3); | |
| 2566 INSERT_JUMP (on_failure_jump, begalt, b + 6); | |
| 2567 pending_exact = 0; | |
| 2568 b += 3; | |
| 2569 | |
| 2570 /* The alternative before this one has a jump after it | |
| 2571 which gets executed if it gets matched. Adjust that | |
| 2572 jump so it will jump to this alternative's analogous | |
| 2573 jump (put in below, which in turn will jump to the next | |
| 2574 (if any) alternative's such jump, etc.). The last such | |
| 2575 jump jumps to the correct final destination. A picture: | |
| 2576 _____ _____ | |
| 2577 | | | | | |
| 2578 | v | v | |
| 2579 a | b | c | |
| 2580 | |
| 2581 If we are at `b', then fixup_alt_jump right now points to a | |
| 2582 three-byte space after `a'. We'll put in the jump, set | |
| 2583 fixup_alt_jump to right after `b', and leave behind three | |
| 2584 bytes which we'll fill in when we get to after `c'. */ | |
| 2585 | |
| 2586 if (fixup_alt_jump) | |
| 2587 STORE_JUMP (jump_past_alt, fixup_alt_jump, b); | |
| 2588 | |
| 2589 /* Mark and leave space for a jump after this alternative, | |
| 2590 to be filled in later either by next alternative or | |
| 2591 when know we're at the end of a series of alternatives. */ | |
| 2592 fixup_alt_jump = b; | |
| 2593 GET_BUFFER_SPACE (3); | |
| 2594 b += 3; | |
| 2595 | |
| 2596 laststart = 0; | |
| 2597 begalt = b; | |
| 2598 break; | |
| 2599 | |
| 2600 | |
| 2601 case '{': | |
| 2602 /* If \{ is a literal. */ | |
| 2603 if (!(syntax & RE_INTERVALS) | |
| 2604 /* If we're at `\{' and it's not the open-interval | |
| 2605 operator. */ | |
| 2606 || ((syntax & RE_INTERVALS) && (syntax & RE_NO_BK_BRACES)) | |
| 2607 || (p - 2 == pattern && p == pend)) | |
| 2608 goto normal_backslash; | |
| 2609 | |
| 2610 handle_interval: | |
| 2611 { | |
| 2612 /* If got here, then the syntax allows intervals. */ | |
| 2613 | |
| 2614 /* At least (most) this many matches must be made. */ | |
| 2615 int lower_bound = -1, upper_bound = -1; | |
| 2616 | |
| 2617 beg_interval = p - 1; | |
| 2618 | |
| 2619 if (p == pend) | |
| 2620 { | |
| 2621 if (syntax & RE_NO_BK_BRACES) | |
| 2622 goto unfetch_interval; | |
| 2623 else | |
| 2624 FREE_STACK_RETURN (REG_EBRACE); | |
| 2625 } | |
| 2626 | |
| 2627 GET_UNSIGNED_NUMBER (lower_bound); | |
| 2628 | |
| 2629 if (c == ',') | |
| 2630 { | |
| 2631 GET_UNSIGNED_NUMBER (upper_bound); | |
| 2632 if (upper_bound < 0) upper_bound = RE_DUP_MAX; | |
| 2633 } | |
| 2634 else | |
| 2635 /* Interval such as `{1}' => match exactly once. */ | |
| 2636 upper_bound = lower_bound; | |
| 2637 | |
| 2638 if (lower_bound < 0 || upper_bound > RE_DUP_MAX | |
| 2639 || lower_bound > upper_bound) | |
| 2640 { | |
| 2641 if (syntax & RE_NO_BK_BRACES) | |
| 2642 goto unfetch_interval; | |
| 2643 else | |
| 2644 FREE_STACK_RETURN (REG_BADBR); | |
| 2645 } | |
| 2646 | |
| 2647 if (!(syntax & RE_NO_BK_BRACES)) | |
| 2648 { | |
| 2649 if (c != '\\') FREE_STACK_RETURN (REG_EBRACE); | |
| 2650 | |
| 2651 PATFETCH (c); | |
| 2652 } | |
| 2653 | |
| 2654 if (c != '}') | |
| 2655 { | |
| 2656 if (syntax & RE_NO_BK_BRACES) | |
| 2657 goto unfetch_interval; | |
| 2658 else | |
| 2659 FREE_STACK_RETURN (REG_BADBR); | |
| 2660 } | |
| 2661 | |
| 2662 /* We just parsed a valid interval. */ | |
| 2663 | |
| 2664 /* If it's invalid to have no preceding re. */ | |
| 2665 if (!laststart) | |
| 2666 { | |
| 2667 if (syntax & RE_CONTEXT_INVALID_OPS) | |
| 2668 FREE_STACK_RETURN (REG_BADRPT); | |
| 2669 else if (syntax & RE_CONTEXT_INDEP_OPS) | |
| 2670 laststart = b; | |
| 2671 else | |
| 2672 goto unfetch_interval; | |
| 2673 } | |
| 2674 | |
| 2675 /* If the upper bound is zero, don't want to succeed at | |
| 2676 all; jump from `laststart' to `b + 3', which will be | |
| 2677 the end of the buffer after we insert the jump. */ | |
| 2678 if (upper_bound == 0) | |
| 2679 { | |
| 2680 GET_BUFFER_SPACE (3); | |
| 2681 INSERT_JUMP (jump, laststart, b + 3); | |
| 2682 b += 3; | |
| 2683 } | |
| 2684 | |
| 2685 /* Otherwise, we have a nontrivial interval. When | |
| 2686 we're all done, the pattern will look like: | |
| 2687 set_number_at <jump count> <upper bound> | |
| 2688 set_number_at <succeed_n count> <lower bound> | |
| 2689 succeed_n <after jump addr> <succeed_n count> | |
| 2690 <body of loop> | |
| 2691 jump_n <succeed_n addr> <jump count> | |
| 2692 (The upper bound and `jump_n' are omitted if | |
| 2693 `upper_bound' is 1, though.) */ | |
| 2694 else | |
| 2695 { /* If the upper bound is > 1, we need to insert | |
| 2696 more at the end of the loop. */ | |
| 2697 unsigned nbytes = 10 + (upper_bound > 1) * 10; | |
| 2698 | |
| 2699 GET_BUFFER_SPACE (nbytes); | |
| 2700 | |
| 2701 /* Initialize lower bound of the `succeed_n', even | |
| 2702 though it will be set during matching by its | |
| 2703 attendant `set_number_at' (inserted next), | |
| 2704 because `re_compile_fastmap' needs to know. | |
| 2705 Jump to the `jump_n' we might insert below. */ | |
| 2706 INSERT_JUMP2 (succeed_n, laststart, | |
| 2707 b + 5 + (upper_bound > 1) * 5, | |
| 2708 lower_bound); | |
| 2709 b += 5; | |
| 2710 | |
| 2711 /* Code to initialize the lower bound. Insert | |
| 2712 before the `succeed_n'. The `5' is the last two | |
| 2713 bytes of this `set_number_at', plus 3 bytes of | |
| 2714 the following `succeed_n'. */ | |
| 2715 insert_op2 (set_number_at, laststart, 5, lower_bound, b); | |
| 2716 b += 5; | |
| 2717 | |
| 2718 if (upper_bound > 1) | |
| 2719 { /* More than one repetition is allowed, so | |
| 2720 append a backward jump to the `succeed_n' | |
| 2721 that starts this interval. | |
| 2722 | |
| 2723 When we've reached this during matching, | |
| 2724 we'll have matched the interval once, so | |
| 2725 jump back only `upper_bound - 1' times. */ | |
| 2726 STORE_JUMP2 (jump_n, b, laststart + 5, | |
| 2727 upper_bound - 1); | |
| 2728 b += 5; | |
| 2729 | |
| 2730 /* The location we want to set is the second | |
| 2731 parameter of the `jump_n'; that is `b-2' as | |
| 2732 an absolute address. `laststart' will be | |
| 2733 the `set_number_at' we're about to insert; | |
| 2734 `laststart+3' the number to set, the source | |
| 2735 for the relative address. But we are | |
| 2736 inserting into the middle of the pattern -- | |
| 2737 so everything is getting moved up by 5. | |
| 2738 Conclusion: (b - 2) - (laststart + 3) + 5, | |
| 2739 i.e., b - laststart. | |
| 2740 | |
| 2741 We insert this at the beginning of the loop | |
| 2742 so that if we fail during matching, we'll | |
| 2743 reinitialize the bounds. */ | |
| 2744 insert_op2 (set_number_at, laststart, b - laststart, | |
| 2745 upper_bound - 1, b); | |
| 2746 b += 5; | |
| 2747 } | |
| 2748 } | |
| 2749 pending_exact = 0; | |
| 2750 beg_interval = NULL; | |
| 2751 } | |
| 2752 break; | |
| 2753 | |
| 2754 unfetch_interval: | |
| 2755 /* If an invalid interval, match the characters as literals. */ | |
| 2756 assert (beg_interval); | |
| 2757 p = beg_interval; | |
| 2758 beg_interval = NULL; | |
| 2759 | |
| 2760 /* normal_char and normal_backslash need `c'. */ | |
| 2761 PATFETCH (c); | |
| 2762 | |
| 2763 if (!(syntax & RE_NO_BK_BRACES)) | |
| 2764 { | |
| 2765 if (p > pattern && p[-1] == '\\') | |
| 2766 goto normal_backslash; | |
| 2767 } | |
| 2768 goto normal_char; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2769 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2770 #ifdef emacs |
| 941 | 2771 /* There is no way to specify the before_dot and after_dot |
| 2772 operators. rms says this is ok. --karl */ | |
| 2773 case '=': | |
| 2774 BUF_PUSH (at_dot); | |
| 2775 break; | |
| 2776 | |
| 2777 case 's': | |
| 2778 laststart = b; | |
| 2779 PATFETCH (c); | |
| 2780 BUF_PUSH_2 (syntaxspec, syntax_spec_code[c]); | |
| 2781 break; | |
| 2782 | |
| 2783 case 'S': | |
| 2784 laststart = b; | |
| 2785 PATFETCH (c); | |
| 2786 BUF_PUSH_2 (notsyntaxspec, syntax_spec_code[c]); | |
| 2787 break; | |
| 939 | 2788 |
| 2789 case 'c': | |
| 679 | 2790 laststart = b; |
| 939 | 2791 PATFETCH_RAW (c); |
| 2792 BUF_PUSH_2 (categoryspec, c); | |
| 679 | 2793 break; |
| 2794 | |
| 939 | 2795 case 'C': |
| 679 | 2796 laststart = b; |
| 939 | 2797 PATFETCH_RAW (c); |
| 2798 BUF_PUSH_2 (notcategoryspec, c); | |
| 679 | 2799 break; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2800 #endif /* emacs */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2801 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2802 |
| 941 | 2803 case 'w': |
| 2804 laststart = b; | |
| 2805 BUF_PUSH (wordchar); | |
| 2806 break; | |
| 2807 | |
| 2808 | |
| 2809 case 'W': | |
| 2810 laststart = b; | |
| 2811 BUF_PUSH (notwordchar); | |
| 2812 break; | |
| 2813 | |
| 2814 | |
| 2815 case '<': | |
| 2816 BUF_PUSH (wordbeg); | |
| 2817 break; | |
| 2818 | |
| 2819 case '>': | |
| 2820 BUF_PUSH (wordend); | |
| 2821 break; | |
| 2822 | |
| 2823 case 'b': | |
| 2824 BUF_PUSH (wordbound); | |
| 2825 break; | |
| 2826 | |
| 2827 case 'B': | |
| 2828 BUF_PUSH (notwordbound); | |
| 2829 break; | |
| 2830 | |
| 2831 case '`': | |
| 2832 BUF_PUSH (begbuf); | |
| 2833 break; | |
| 2834 | |
| 2835 case '\'': | |
| 2836 BUF_PUSH (endbuf); | |
| 2837 break; | |
| 2838 | |
| 2839 case '1': case '2': case '3': case '4': case '5': | |
| 2840 case '6': case '7': case '8': case '9': | |
| 2841 if (syntax & RE_NO_BK_REFS) | |
| 2842 goto normal_char; | |
| 2843 | |
| 2844 c1 = c - '0'; | |
| 2845 | |
| 2846 if (c1 > regnum) | |
| 2847 FREE_STACK_RETURN (REG_ESUBREG); | |
| 2848 | |
| 2849 /* Can't back reference to a subexpression if inside of it. */ | |
| 2850 if (group_in_compile_stack (compile_stack, c1)) | |
| 2851 goto normal_char; | |
| 2852 | |
| 2853 laststart = b; | |
| 2854 BUF_PUSH_2 (duplicate, c1); | |
| 2855 break; | |
| 2856 | |
| 2857 | |
| 2858 case '+': | |
| 2859 case '?': | |
| 2860 if (syntax & RE_BK_PLUS_QM) | |
| 2861 goto handle_plus; | |
| 2862 else | |
| 2863 goto normal_backslash; | |
| 2864 | |
| 2865 default: | |
| 2866 normal_backslash: | |
| 2867 /* You might think it would be useful for \ to mean | |
| 2868 not to translate; but if we don't translate it | |
| 2869 it will never match anything. */ | |
| 2870 c = TRANSLATE (c); | |
| 2871 goto normal_char; | |
| 2872 } | |
| 2873 break; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2874 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2875 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2876 default: |
| 941 | 2877 /* Expects the character in `c'. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2878 normal_char: |
| 939 | 2879 p1 = p - 1; /* P1 points the head of C. */ |
| 2880 #ifdef emacs | |
| 2881 if (bufp->multibyte) | |
| 2882 /* Set P to the next character boundary. */ | |
| 2883 p += MULTIBYTE_FORM_LENGTH (p1, pend - p1) - 1; | |
| 2884 #endif | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2885 /* If no exactn currently being built. */ |
| 941 | 2886 if (!pending_exact |
| 2887 | |
| 2888 /* If last exactn not at current position. */ | |
| 2889 || pending_exact + *pending_exact + 1 != b | |
| 2890 | |
| 2891 /* We have only one byte following the exactn for the count. */ | |
| 939 | 2892 || *pending_exact >= (1 << BYTEWIDTH) - (p - p1) |
| 2893 | |
| 941 | 2894 /* If followed by a repetition operator. */ |
| 2895 || *p == '*' || *p == '^' | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2896 || ((syntax & RE_BK_PLUS_QM) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2897 ? *p == '\\' && (p[1] == '+' || p[1] == '?') |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2898 : (*p == '+' || *p == '?')) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2899 || ((syntax & RE_INTERVALS) |
| 941 | 2900 && ((syntax & RE_NO_BK_BRACES) |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2901 ? *p == '{' |
| 941 | 2902 : (p[0] == '\\' && p[1] == '{')))) |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2903 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2904 /* Start building a new exactn. */ |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
2905 |
| 941 | 2906 laststart = b; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2907 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2908 BUF_PUSH_2 (exactn, 0); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2909 pending_exact = b - 1; |
| 941 | 2910 } |
| 939 | 2911 |
| 2912 /* Here, C may translated, therefore C may not equal to *P1. */ | |
| 2913 while (1) | |
| 2914 { | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2915 BUF_PUSH (c); |
| 941 | 2916 (*pending_exact)++; |
| 939 | 2917 if (++p1 == p) |
| 2918 break; | |
| 2919 | |
| 2920 /* Rest of multibyte form should be copied literally. */ | |
| 2921 c = *(unsigned char *)p1; | |
| 2922 } | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2923 break; |
| 941 | 2924 } /* switch (c) */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2925 } /* while p != pend */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2926 |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
2927 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2928 /* Through the pattern now. */ |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
2929 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2930 if (fixup_alt_jump) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2931 STORE_JUMP (jump_past_alt, fixup_alt_jump, b); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2932 |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
2933 if (!COMPILE_STACK_EMPTY) |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2934 FREE_STACK_RETURN (REG_EPAREN); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2935 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2936 /* If we don't want backtracking, force success |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2937 the first time we reach the end of the compiled pattern. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2938 if (syntax & RE_NO_POSIX_BACKTRACKING) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2939 BUF_PUSH (succeed); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2940 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2941 free (compile_stack.stack); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2942 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2943 /* We have succeeded; set the length of the buffer. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2944 bufp->used = b - bufp->buffer; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2945 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2946 #ifdef DEBUG |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2947 if (debug) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2948 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2949 DEBUG_PRINT1 ("\nCompiled pattern: \n"); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2950 print_compiled_pattern (bufp); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2951 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2952 #endif /* DEBUG */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2953 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2954 #ifndef MATCH_MAY_ALLOCATE |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2955 /* Initialize the failure stack to the largest possible stack. This |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2956 isn't necessary unless we're trying to avoid calling alloca in |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2957 the search and match routines. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2958 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2959 int num_regs = bufp->re_nsub + 1; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2960 |
|
1156
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
2961 if (fail_stack.size < re_max_failures * TYPICAL_FAILURE_SIZE) |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2962 { |
|
1156
8e1cbb305ddc
(TYPICAL_FAILURE_SIZE): Renamed from MAX_FAILURE_ITEMS.
Karl Heuer <kwzh@gnu.org>
parents:
992
diff
changeset
|
2963 fail_stack.size = re_max_failures * TYPICAL_FAILURE_SIZE); |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2964 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2965 #ifdef emacs |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2966 if (! fail_stack.stack) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2967 fail_stack.stack |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
2968 = (fail_stack_elt_t *) xmalloc (fail_stack.size |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2969 * sizeof (fail_stack_elt_t)); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2970 else |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2971 fail_stack.stack |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2972 = (fail_stack_elt_t *) xrealloc (fail_stack.stack, |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2973 (fail_stack.size |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2974 * sizeof (fail_stack_elt_t))); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2975 #else /* not emacs */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2976 if (! fail_stack.stack) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2977 fail_stack.stack |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
2978 = (fail_stack_elt_t *) malloc (fail_stack.size |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2979 * sizeof (fail_stack_elt_t)); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2980 else |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2981 fail_stack.stack |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2982 = (fail_stack_elt_t *) realloc (fail_stack.stack, |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2983 (fail_stack.size |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2984 * sizeof (fail_stack_elt_t))); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2985 #endif /* not emacs */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2986 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2987 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2988 regex_grow_registers (num_regs); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2989 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2990 #endif /* not MATCH_MAY_ALLOCATE */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2991 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2992 return REG_NOERROR; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2993 } /* regex_compile */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2994 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2995 /* Subroutines for `regex_compile'. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2996 |
| 941 | 2997 /* Store OP at LOC followed by two-byte integer parameter ARG. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2998 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
2999 static void |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3000 store_op1 (op, loc, arg) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3001 re_opcode_t op; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3002 unsigned char *loc; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3003 int arg; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3004 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3005 *loc = (unsigned char) op; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3006 STORE_NUMBER (loc + 1, arg); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3007 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3008 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3009 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3010 /* Like `store_op1', but for two two-byte parameters ARG1 and ARG2. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3011 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3012 static void |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3013 store_op2 (op, loc, arg1, arg2) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3014 re_opcode_t op; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3015 unsigned char *loc; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3016 int arg1, arg2; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3017 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3018 *loc = (unsigned char) op; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3019 STORE_NUMBER (loc + 1, arg1); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3020 STORE_NUMBER (loc + 3, arg2); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3021 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3022 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3023 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3024 /* Copy the bytes from LOC to END to open up three bytes of space at LOC |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3025 for OP followed by two-byte integer parameter ARG. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3026 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3027 static void |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3028 insert_op1 (op, loc, arg, end) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3029 re_opcode_t op; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3030 unsigned char *loc; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3031 int arg; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3032 unsigned char *end; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3033 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3034 register unsigned char *pfrom = end; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3035 register unsigned char *pto = end + 3; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3036 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3037 while (pfrom != loc) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3038 *--pto = *--pfrom; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3039 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3040 store_op1 (op, loc, arg); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3041 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3042 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3043 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3044 /* Like `insert_op1', but for two two-byte parameters ARG1 and ARG2. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3045 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3046 static void |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3047 insert_op2 (op, loc, arg1, arg2, end) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3048 re_opcode_t op; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3049 unsigned char *loc; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3050 int arg1, arg2; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3051 unsigned char *end; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3052 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3053 register unsigned char *pfrom = end; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3054 register unsigned char *pto = end + 5; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3055 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3056 while (pfrom != loc) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3057 *--pto = *--pfrom; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3058 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3059 store_op2 (op, loc, arg1, arg2); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3060 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3061 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3062 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3063 /* P points to just after a ^ in PATTERN. Return true if that ^ comes |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3064 after an alternative or a begin-subexpression. We assume there is at |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3065 least one character before the ^. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3066 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3067 static boolean |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3068 at_begline_loc_p (pattern, p, syntax) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3069 const char *pattern, *p; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3070 reg_syntax_t syntax; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3071 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3072 const char *prev = p - 2; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3073 boolean prev_prev_backslash = prev > pattern && prev[-1] == '\\'; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3074 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3075 return |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3076 /* After a subexpression? */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3077 (*prev == '(' && (syntax & RE_NO_BK_PARENS || prev_prev_backslash)) |
| 941 | 3078 /* After an alternative? */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3079 || (*prev == '|' && (syntax & RE_NO_BK_VBAR || prev_prev_backslash)); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3080 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3081 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3082 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3083 /* The dual of at_begline_loc_p. This one is for $. We assume there is |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3084 at least one character after the $, i.e., `P < PEND'. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3085 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3086 static boolean |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3087 at_endline_loc_p (p, pend, syntax) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3088 const char *p, *pend; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3089 int syntax; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3090 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3091 const char *next = p; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3092 boolean next_backslash = *next == '\\'; |
|
449
c29f67a3f852
(at_endline_loc_p): Use 0, not NULL, in ?: for next_next.
Karl Heuer <kwzh@gnu.org>
parents:
447
diff
changeset
|
3093 const char *next_next = p + 1 < pend ? p + 1 : 0; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3094 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3095 return |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3096 /* Before a subexpression? */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3097 (syntax & RE_NO_BK_PARENS ? *next == ')' |
| 941 | 3098 : next_backslash && next_next && *next_next == ')') |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3099 /* Before an alternative? */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3100 || (syntax & RE_NO_BK_VBAR ? *next == '|' |
| 941 | 3101 : next_backslash && next_next && *next_next == '|'); |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3102 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3103 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3104 |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3105 /* Returns true if REGNUM is in one of COMPILE_STACK's elements and |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3106 false if it's not. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3107 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3108 static boolean |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3109 group_in_compile_stack (compile_stack, regnum) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3110 compile_stack_type compile_stack; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3111 regnum_t regnum; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3112 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3113 int this_element; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3114 |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3115 for (this_element = compile_stack.avail - 1; |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3116 this_element >= 0; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3117 this_element--) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3118 if (compile_stack.stack[this_element].regnum == regnum) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3119 return true; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3120 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3121 return false; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3122 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3123 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3124 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3125 /* Read the ending character of a range (in a bracket expression) from the |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3126 uncompiled pattern *P_PTR (which ends at PEND). We assume the |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3127 starting character is in `P[-2]'. (`P[-1]' is the character `-'.) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3128 Then we set the translation of all bits between the starting and |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3129 ending characters (inclusive) in the compiled pattern B. |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3130 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3131 Return an error code. |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3132 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3133 We use these short variable names so we can use the same macros as |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3134 `regex_compile' itself. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3135 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3136 static reg_errcode_t |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3137 compile_range (p_ptr, pend, translate, syntax, b) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3138 const char **p_ptr, *pend; |
|
501
f29b13c2cefd
(TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents:
490
diff
changeset
|
3139 RE_TRANSLATE_TYPE translate; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3140 reg_syntax_t syntax; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3141 unsigned char *b; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3142 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3143 unsigned this_char; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3144 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3145 const char *p = *p_ptr; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3146 int range_start, range_end; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3147 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3148 if (p == pend) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3149 return REG_ERANGE; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3150 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3151 /* Even though the pattern is a signed `char *', we need to fetch |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3152 with unsigned char *'s; if the high bit of the pattern character |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3153 is set, the range endpoints will be negative if we fetch using a |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3154 signed char *. |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3155 |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3156 We also want to fetch the endpoints without translating them; the |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3157 appropriate translation is done in the bit-setting loop below. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3158 /* The SVR4 compiler on the 3B2 had trouble with unsigned const char *. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3159 range_start = ((const unsigned char *) p)[-2]; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3160 range_end = ((const unsigned char *) p)[0]; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3161 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3162 /* Have to increment the pointer into the pattern string, so the |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3163 caller isn't still at the ending character. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3164 (*p_ptr)++; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3165 |
| 941 | 3166 /* If the start is after the end, the range is empty. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3167 if (range_start > range_end) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3168 return syntax & RE_NO_EMPTY_RANGES ? REG_ERANGE : REG_NOERROR; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3169 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3170 /* Here we see why `this_char' has to be larger than an `unsigned |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3171 char' -- the range is inclusive, so if `range_end' == 0xff |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3172 (assuming 8-bit characters), we would otherwise go into an infinite |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3173 loop, since all characters <= 0xff. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3174 for (this_char = range_start; this_char <= range_end; this_char++) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3175 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3176 SET_LIST_BIT (TRANSLATE (this_char)); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3177 } |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3178 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3179 return REG_NOERROR; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3180 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3181 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3182 /* re_compile_fastmap computes a ``fastmap'' for the compiled pattern in |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3183 BUFP. A fastmap records which of the (1 << BYTEWIDTH) possible |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3184 characters can start a string that matches the pattern. This fastmap |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3185 is used by re_search to skip quickly over impossible starting points. |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3186 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3187 The caller must supply the address of a (1 << BYTEWIDTH)-byte data |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3188 area as BUFP->fastmap. |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3189 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3190 We set the `fastmap', `fastmap_accurate', and `can_be_null' fields in |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3191 the pattern buffer. |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3192 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3193 Returns 0 if we succeed, -2 if an internal error. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3194 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3195 int |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3196 re_compile_fastmap (bufp) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3197 struct re_pattern_buffer *bufp; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3198 { |
| 939 | 3199 int i, j, k; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3200 #ifdef MATCH_MAY_ALLOCATE |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3201 fail_stack_type fail_stack; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3202 #endif |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3203 #ifndef REGEX_MALLOC |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3204 char *destination; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3205 #endif |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3206 /* We don't push any register information onto the failure stack. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3207 unsigned num_regs = 0; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3208 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3209 register char *fastmap = bufp->fastmap; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3210 unsigned char *pattern = bufp->buffer; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3211 unsigned long size = bufp->used; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3212 unsigned char *p = pattern; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3213 register unsigned char *pend = pattern + size; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3214 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3215 /* This holds the pointer to the failure stack, when |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3216 it is allocated relocatably. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3217 fail_stack_elt_t *failure_stack_ptr; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3218 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3219 /* Assume that each path through the pattern can be null until |
| 941 | 3220 proven otherwise. We set this false at the bottom of switch |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3221 statement, to which we get only if a particular path doesn't |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3222 match the empty string. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3223 boolean path_can_be_null = true; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3224 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3225 /* We aren't doing a `succeed_n' to begin with. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3226 boolean succeed_n_p = false; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3227 |
| 939 | 3228 /* If all elements for base leading-codes in fastmap is set, this |
| 941 | 3229 flag is set true. */ |
| 939 | 3230 boolean match_any_multibyte_characters = false; |
| 3231 | |
| 3232 /* Maximum code of simple (single byte) character. */ | |
| 3233 int simple_char_max; | |
| 3234 | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3235 assert (fastmap != NULL && p != NULL); |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3236 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3237 INIT_FAIL_STACK (); |
| 941 | 3238 bzero (fastmap, 1 << BYTEWIDTH); /* Assume nothing's valid. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3239 bufp->fastmap_accurate = 1; /* It will be when we're done. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3240 bufp->can_be_null = 0; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3241 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3242 while (1) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3243 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3244 if (p == pend || *p == succeed) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3245 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3246 /* We have reached the (effective) end of pattern. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3247 if (!FAIL_STACK_EMPTY ()) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3248 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3249 bufp->can_be_null |= path_can_be_null; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3250 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3251 /* Reset for next path. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3252 path_can_be_null = true; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3253 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3254 p = fail_stack.stack[--fail_stack.avail].pointer; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3255 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3256 continue; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3257 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3258 else |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3259 break; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3260 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3261 |
| 941 | 3262 /* We should never be about to go beyond the end of the pattern. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3263 assert (p < pend); |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3264 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3265 switch (SWITCH_ENUM_CAST ((re_opcode_t) *p++)) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3266 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3267 |
| 941 | 3268 /* I guess the idea here is to simply not bother with a fastmap |
| 3269 if a backreference is used, since it's too hard to figure out | |
| 3270 the fastmap for the corresponding group. Setting | |
| 3271 `can_be_null' stops `re_search_2' from using the fastmap, so | |
| 3272 that is all we do. */ | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3273 case duplicate: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3274 bufp->can_be_null = 1; |
| 941 | 3275 goto done; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3276 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3277 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3278 /* Following are the cases which match a character. These end |
| 941 | 3279 with `break'. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3280 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3281 case exactn: |
| 941 | 3282 fastmap[p[1]] = 1; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3283 break; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3284 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3285 |
| 939 | 3286 #ifndef emacs |
| 941 | 3287 case charset: |
| 3288 for (j = *p++ * BYTEWIDTH - 1; j >= 0; j--) | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3289 if (p[j / BYTEWIDTH] & (1 << (j % BYTEWIDTH))) |
| 941 | 3290 fastmap[j] = 1; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3291 break; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3292 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3293 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3294 case charset_not: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3295 /* Chars beyond end of map must be allowed. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3296 for (j = *p * BYTEWIDTH; j < (1 << BYTEWIDTH); j++) |
| 941 | 3297 fastmap[j] = 1; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3298 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3299 for (j = *p++ * BYTEWIDTH - 1; j >= 0; j--) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3300 if (!(p[j / BYTEWIDTH] & (1 << (j % BYTEWIDTH)))) |
| 941 | 3301 fastmap[j] = 1; |
| 3302 break; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3303 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3304 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3305 case wordchar: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3306 for (j = 0; j < (1 << BYTEWIDTH); j++) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3307 if (SYNTAX (j) == Sword) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3308 fastmap[j] = 1; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3309 break; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3310 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3311 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3312 case notwordchar: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3313 for (j = 0; j < (1 << BYTEWIDTH); j++) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3314 if (SYNTAX (j) != Sword) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3315 fastmap[j] = 1; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3316 break; |
| 939 | 3317 #else /* emacs */ |
| 3318 case charset: | |
| 3319 for (j = CHARSET_BITMAP_SIZE (&p[-1]) * BYTEWIDTH - 1, p++; | |
| 3320 j >= 0; j--) | |
| 3321 if (p[j / BYTEWIDTH] & (1 << (j % BYTEWIDTH))) | |
| 3322 fastmap[j] = 1; | |
| 3323 | |
| 3324 if (CHARSET_RANGE_TABLE_EXISTS_P (&p[-2]) | |
| 3325 && match_any_multibyte_characters == false) | |
| 3326 { | |
| 3327 /* Set fastmap[I] 1 where I is a base leading code of each | |
| 3328 multibyte character in the range table. */ | |
| 3329 int c, count; | |
| 3330 | |
| 3331 /* Make P points the range table. */ | |
| 3332 p += CHARSET_BITMAP_SIZE (&p[-2]); | |
| 3333 | |
| 3334 /* Extract the number of ranges in range table into | |
| 941 | 3335 COUNT. */ |
| 939 | 3336 EXTRACT_NUMBER_AND_INCR (count, p); |
| 3337 for (; count > 0; count--, p += 2 * 3) /* XXX */ | |
| 3338 { | |
| 3339 /* Extract the start of each range. */ | |
| 3340 EXTRACT_CHARACTER (c, p); | |
| 3341 j = CHAR_CHARSET (c); | |
| 3342 fastmap[CHARSET_LEADING_CODE_BASE (j)] = 1; | |
| 3343 } | |
| 3344 } | |
| 3345 break; | |
| 3346 | |
| 3347 | |
| 3348 case charset_not: | |
| 3349 /* Chars beyond end of map must be allowed. End of map is | |
| 3350 `127' if bufp->multibyte is nonzero. */ | |
| 3351 simple_char_max = bufp->multibyte ? 0x80 : (1 << BYTEWIDTH); | |
| 3352 for (j = CHARSET_BITMAP_SIZE (&p[-1]) * BYTEWIDTH; | |
| 3353 j < simple_char_max; j++) | |
| 3354 fastmap[j] = 1; | |
| 3355 | |
| 3356 for (j = CHARSET_BITMAP_SIZE (&p[-1]) * BYTEWIDTH - 1, p++; | |
| 3357 j >= 0; j--) | |
| 3358 if (!(p[j / BYTEWIDTH] & (1 << (j % BYTEWIDTH)))) | |
| 3359 fastmap[j] = 1; | |
| 3360 | |
| 3361 if (bufp->multibyte) | |
| 3362 /* Any character set can possibly contain a character | |
| 3363 which doesn't match the specified set of characters. */ | |
| 3364 { | |
| 3365 set_fastmap_for_multibyte_characters: | |
| 3366 if (match_any_multibyte_characters == false) | |
| 3367 { | |
| 3368 for (j = 0x80; j < 0xA0; j++) /* XXX */ | |
| 3369 if (BASE_LEADING_CODE_P (j)) | |
| 3370 fastmap[j] = 1; | |
| 3371 match_any_multibyte_characters = true; | |
| 3372 } | |
| 3373 } | |
| 3374 break; | |
| 3375 | |
| 3376 | |
| 3377 case wordchar: | |
| 3378 simple_char_max = bufp->multibyte ? 0x80 : (1 << BYTEWIDTH); | |
| 3379 for (j = 0; j < simple_char_max; j++) | |
| 3380 if (SYNTAX (j) == Sword) | |
| 3381 fastmap[j] = 1; | |
| 3382 | |
| 3383 if (bufp->multibyte) | |
| 3384 /* Any character set can possibly contain a character | |
| 941 | 3385 whose syntax is `Sword'. */ |
| 939 | 3386 goto set_fastmap_for_multibyte_characters; |
| 3387 break; | |
| 3388 | |
| 3389 | |
| 3390 case notwordchar: | |
| 3391 simple_char_max = bufp->multibyte ? 0x80 : (1 << BYTEWIDTH); | |
| 3392 for (j = 0; j < simple_char_max; j++) | |
| 3393 if (SYNTAX (j) != Sword) | |
| 3394 fastmap[j] = 1; | |
| 3395 | |
| 3396 if (bufp->multibyte) | |
| 3397 /* Any character set can possibly contain a character | |
| 3398 whose syntax is not `Sword'. */ | |
| 3399 goto set_fastmap_for_multibyte_characters; | |
| 3400 break; | |
| 3401 #endif | |
| 3402 | |
| 941 | 3403 case anychar: |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3404 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3405 int fastmap_newline = fastmap['\n']; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3406 |
| 939 | 3407 /* `.' matches anything (but if bufp->multibyte is |
| 3408 nonzero, matches `\000' .. `\127' and possible multibyte | |
| 3409 character) ... */ | |
| 3410 if (bufp->multibyte) | |
| 3411 { | |
| 3412 simple_char_max = 0x80; | |
| 3413 | |
| 3414 for (j = 0x80; j < 0xA0; j++) | |
| 3415 if (BASE_LEADING_CODE_P (j)) | |
| 3416 fastmap[j] = 1; | |
| 3417 match_any_multibyte_characters = true; | |
| 3418 } | |
| 3419 else | |
| 3420 simple_char_max = (1 << BYTEWIDTH); | |
| 3421 | |
| 3422 for (j = 0; j < simple_char_max; j++) | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3423 fastmap[j] = 1; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3424 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3425 /* ... except perhaps newline. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3426 if (!(bufp->syntax & RE_DOT_NEWLINE)) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3427 fastmap['\n'] = fastmap_newline; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3428 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3429 /* Return if we have already set `can_be_null'; if we have, |
| 941 | 3430 then the fastmap is irrelevant. Something's wrong here. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3431 else if (bufp->can_be_null) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3432 goto done; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3433 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3434 /* Otherwise, have to check alternative paths. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3435 break; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3436 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3437 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3438 #ifdef emacs |
| 939 | 3439 case wordbound: |
| 3440 case notwordbound: | |
| 3441 case wordbeg: | |
| 3442 case wordend: | |
| 3443 case notsyntaxspec: | |
| 941 | 3444 case syntaxspec: |
| 939 | 3445 /* This match depends on text properties. These end with |
| 3446 aborting optimizations. */ | |
| 3447 bufp->can_be_null = 1; | |
| 941 | 3448 goto done; |
| 939 | 3449 #if 0 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3450 k = *p++; |
| 939 | 3451 simple_char_max = bufp->multibyte ? 0x80 : (1 << BYTEWIDTH); |
| 3452 for (j = 0; j < simple_char_max; j++) | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3453 if (SYNTAX (j) == (enum syntaxcode) k) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3454 fastmap[j] = 1; |
| 939 | 3455 |
| 3456 if (bufp->multibyte) | |
| 3457 /* Any character set can possibly contain a character | |
| 3458 whose syntax is K. */ | |
| 3459 goto set_fastmap_for_multibyte_characters; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3460 break; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3461 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3462 case notsyntaxspec: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3463 k = *p++; |
| 939 | 3464 simple_char_max = bufp->multibyte ? 0x80 : (1 << BYTEWIDTH); |
| 3465 for (j = 0; j < simple_char_max; j++) | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3466 if (SYNTAX (j) != (enum syntaxcode) k) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3467 fastmap[j] = 1; |
| 939 | 3468 |
| 3469 if (bufp->multibyte) | |
| 3470 /* Any character set can possibly contain a character | |
| 3471 whose syntax is not K. */ | |
| 3472 goto set_fastmap_for_multibyte_characters; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3473 break; |
| 939 | 3474 #endif |
| 3475 | |
| 3476 | |
| 3477 case categoryspec: | |
| 3478 k = *p++; | |
| 3479 simple_char_max = bufp->multibyte ? 0x80 : (1 << BYTEWIDTH); | |
| 3480 for (j = 0; j < simple_char_max; j++) | |
| 3481 if (CHAR_HAS_CATEGORY (j, k)) | |
| 3482 fastmap[j] = 1; | |
| 3483 | |
| 3484 if (bufp->multibyte) | |
| 3485 /* Any character set can possibly contain a character | |
| 3486 whose category is K. */ | |
| 3487 goto set_fastmap_for_multibyte_characters; | |
| 3488 break; | |
| 3489 | |
| 3490 | |
| 3491 case notcategoryspec: | |
| 3492 k = *p++; | |
| 3493 simple_char_max = bufp->multibyte ? 0x80 : (1 << BYTEWIDTH); | |
| 3494 for (j = 0; j < simple_char_max; j++) | |
| 3495 if (!CHAR_HAS_CATEGORY (j, k)) | |
| 3496 fastmap[j] = 1; | |
| 3497 | |
| 3498 if (bufp->multibyte) | |
| 3499 /* Any character set can possibly contain a character | |
| 941 | 3500 whose category is not K. */ |
| 939 | 3501 goto set_fastmap_for_multibyte_characters; |
| 3502 break; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3503 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3504 /* All cases after this match the empty string. These end with |
| 941 | 3505 `continue'. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3506 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3507 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3508 case before_dot: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3509 case at_dot: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3510 case after_dot: |
| 941 | 3511 continue; |
|
481
35afc74165b7
(re_search_2): If pattern starts with \=, optimize search.
Richard Stallman <rms@gnu.org>
parents:
480
diff
changeset
|
3512 #endif /* emacs */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3513 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3514 |
| 941 | 3515 case no_op: |
| 3516 case begline: | |
| 3517 case endline: | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3518 case begbuf: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3519 case endbuf: |
| 939 | 3520 #ifndef emacs |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3521 case wordbound: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3522 case notwordbound: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3523 case wordbeg: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3524 case wordend: |
| 941 | 3525 #endif |
| 3526 case push_dummy_failure: | |
| 3527 continue; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3528 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3529 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3530 case jump_n: |
| 941 | 3531 case pop_failure_jump: |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3532 case maybe_pop_jump: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3533 case jump: |
| 941 | 3534 case jump_past_alt: |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3535 case dummy_failure_jump: |
| 941 | 3536 EXTRACT_NUMBER_AND_INCR (j, p); |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3537 p += j; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3538 if (j > 0) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3539 continue; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3540 |
| 941 | 3541 /* Jump backward implies we just went through the body of a |
| 3542 loop and matched nothing. Opcode jumped to should be | |
| 3543 `on_failure_jump' or `succeed_n'. Just treat it like an | |
| 3544 ordinary jump. For a * loop, it has pushed its failure | |
| 3545 point already; if so, discard that as redundant. */ | |
| 3546 if ((re_opcode_t) *p != on_failure_jump | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3547 && (re_opcode_t) *p != succeed_n) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3548 continue; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3549 |
| 941 | 3550 p++; |
| 3551 EXTRACT_NUMBER_AND_INCR (j, p); | |
| 3552 p += j; | |
| 3553 | |
| 3554 /* If what's on the stack is where we are now, pop it. */ | |
| 3555 if (!FAIL_STACK_EMPTY () | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3556 && fail_stack.stack[fail_stack.avail - 1].pointer == p) |
| 941 | 3557 fail_stack.avail--; |
| 3558 | |
| 3559 continue; | |
| 3560 | |
| 3561 | |
| 3562 case on_failure_jump: | |
| 3563 case on_failure_keep_string_jump: | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3564 handle_on_failure_jump: |
| 941 | 3565 EXTRACT_NUMBER_AND_INCR (j, p); |
| 3566 | |
| 3567 /* For some patterns, e.g., `(a?)?', `p+j' here points to the | |
| 3568 end of the pattern. We don't want to push such a point, | |
| 3569 since when we restore it above, entering the switch will | |
| 3570 increment `p' past the end of the pattern. We don't need | |
| 3571 to push such a point since we obviously won't find any more | |
| 3572 fastmap entries beyond `pend'. Such a pattern can match | |
| 3573 the null string, though. */ | |
| 3574 if (p + j < pend) | |
| 3575 { | |
| 3576 if (!PUSH_PATTERN_OP (p + j, fail_stack)) | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3577 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3578 RESET_FAIL_STACK (); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3579 return -2; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3580 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3581 } |
| 941 | 3582 else |
| 3583 bufp->can_be_null = 1; | |
| 3584 | |
| 3585 if (succeed_n_p) | |
| 3586 { | |
| 3587 EXTRACT_NUMBER_AND_INCR (k, p); /* Skip the n. */ | |
| 3588 succeed_n_p = false; | |
| 3589 } | |
| 3590 | |
| 3591 continue; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3592 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3593 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3594 case succeed_n: |
| 941 | 3595 /* Get to the number of times to succeed. */ |
| 3596 p += 2; | |
| 3597 | |
| 3598 /* Increment p past the n for when k != 0. */ | |
| 3599 EXTRACT_NUMBER_AND_INCR (k, p); | |
| 3600 if (k == 0) | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3601 { |
| 941 | 3602 p -= 4; |
| 3603 succeed_n_p = true; /* Spaghetti code alert. */ | |
| 3604 goto handle_on_failure_jump; | |
| 3605 } | |
| 3606 continue; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3607 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3608 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3609 case set_number_at: |
| 941 | 3610 p += 4; |
| 3611 continue; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3612 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3613 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3614 case start_memory: |
| 941 | 3615 case stop_memory: |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3616 p += 2; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3617 continue; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3618 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3619 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3620 default: |
| 941 | 3621 abort (); /* We have listed all the cases. */ |
| 3622 } /* switch *p++ */ | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3623 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3624 /* Getting here means we have found the possible starting |
| 941 | 3625 characters for one path of the pattern -- and that the empty |
| 3626 string does not match. We need not follow this path further. | |
| 3627 Instead, look at the next alternative (remembered on the | |
| 3628 stack), or quit if no more. The test at the top of the loop | |
| 3629 does these things. */ | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3630 path_can_be_null = false; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3631 p = pend; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3632 } /* while p */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3633 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3634 /* Set `can_be_null' for the last path (also the first path, if the |
| 941 | 3635 pattern is empty). */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3636 bufp->can_be_null |= path_can_be_null; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3637 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3638 done: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3639 RESET_FAIL_STACK (); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3640 return 0; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3641 } /* re_compile_fastmap */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3642 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3643 /* Set REGS to hold NUM_REGS registers, storing them in STARTS and |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3644 ENDS. Subsequent matches using PATTERN_BUFFER and REGS will use |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3645 this memory for recording register information. STARTS and ENDS |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3646 must be allocated using the malloc library routine, and must each |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3647 be at least NUM_REGS * sizeof (regoff_t) bytes long. |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3648 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3649 If NUM_REGS == 0, then subsequent matches should allocate their own |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3650 register data. |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3651 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3652 Unless this function is called, the first search or match using |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3653 PATTERN_BUFFER will allocate its own register data, without |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3654 freeing the old data. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3655 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3656 void |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3657 re_set_registers (bufp, regs, num_regs, starts, ends) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3658 struct re_pattern_buffer *bufp; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3659 struct re_registers *regs; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3660 unsigned num_regs; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3661 regoff_t *starts, *ends; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3662 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3663 if (num_regs) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3664 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3665 bufp->regs_allocated = REGS_REALLOCATE; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3666 regs->num_regs = num_regs; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3667 regs->start = starts; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3668 regs->end = ends; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3669 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3670 else |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3671 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3672 bufp->regs_allocated = REGS_UNALLOCATED; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3673 regs->num_regs = 0; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3674 regs->start = regs->end = (regoff_t *) 0; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3675 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3676 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3677 |
| 941 | 3678 /* Searching routines. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3679 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3680 /* Like re_search_2, below, but only one string is specified, and |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3681 doesn't let you say where to stop matching. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3682 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3683 int |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3684 re_search (bufp, string, size, startpos, range, regs) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3685 struct re_pattern_buffer *bufp; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3686 const char *string; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3687 int size, startpos, range; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3688 struct re_registers *regs; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3689 { |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3690 return re_search_2 (bufp, NULL, 0, string, size, startpos, range, |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3691 regs, size); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3692 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3693 |
| 939 | 3694 /* End address of virtual concatenation of string. */ |
| 3695 #define STOP_ADDR_VSTRING(P) \ | |
| 3696 (((P) >= size1 ? string2 + size2 : string1 + size1)) | |
| 3697 | |
| 3698 /* Address of POS in the concatenation of virtual string. */ | |
| 3699 #define POS_ADDR_VSTRING(POS) \ | |
| 3700 (((POS) >= size1 ? string2 - size1 : string1) + (POS)) | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3701 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3702 /* Using the compiled pattern in BUFP->buffer, first tries to match the |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3703 virtual concatenation of STRING1 and STRING2, starting first at index |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3704 STARTPOS, then at STARTPOS + 1, and so on. |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3705 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3706 STRING1 and STRING2 have length SIZE1 and SIZE2, respectively. |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3707 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3708 RANGE is how far to scan while trying to match. RANGE = 0 means try |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3709 only at STARTPOS; in general, the last start tried is STARTPOS + |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3710 RANGE. |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3711 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3712 In REGS, return the indices of the virtual concatenation of STRING1 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3713 and STRING2 that matched the entire BUFP->buffer and its contained |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3714 subexpressions. |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3715 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3716 Do not consider matching one past the index STOP in the virtual |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3717 concatenation of STRING1 and STRING2. |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3718 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3719 We return either the position in the strings at which the match was |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3720 found, -1 if no match, or -2 if error (such as failure |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3721 stack overflow). */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3722 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3723 int |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3724 re_search_2 (bufp, string1, size1, string2, size2, startpos, range, regs, stop) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3725 struct re_pattern_buffer *bufp; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3726 const char *string1, *string2; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3727 int size1, size2; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3728 int startpos; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3729 int range; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3730 struct re_registers *regs; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3731 int stop; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3732 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3733 int val; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3734 register char *fastmap = bufp->fastmap; |
|
501
f29b13c2cefd
(TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents:
490
diff
changeset
|
3735 register RE_TRANSLATE_TYPE translate = bufp->translate; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3736 int total_size = size1 + size2; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3737 int endpos = startpos + range; |
|
678
bd677f8ba924
(re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents:
677
diff
changeset
|
3738 int anchored_start = 0; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3739 |
| 941 | 3740 /* Nonzero if we have to concern multibyte character. */ |
| 939 | 3741 int multibyte = bufp->multibyte; |
| 3742 | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3743 /* Check for out-of-range STARTPOS. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3744 if (startpos < 0 || startpos > total_size) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3745 return -1; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3746 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3747 /* Fix up RANGE if it might eventually take us outside |
|
490
985fe9826996
(re_search_2): Use 0, not -1, as the lower bound
Richard Stallman <rms@gnu.org>
parents:
481
diff
changeset
|
3748 the virtual concatenation of STRING1 and STRING2. |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3749 Make sure we won't move STARTPOS below 0 or above TOTAL_SIZE. */ |
|
490
985fe9826996
(re_search_2): Use 0, not -1, as the lower bound
Richard Stallman <rms@gnu.org>
parents:
481
diff
changeset
|
3750 if (endpos < 0) |
|
985fe9826996
(re_search_2): Use 0, not -1, as the lower bound
Richard Stallman <rms@gnu.org>
parents:
481
diff
changeset
|
3751 range = 0 - startpos; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3752 else if (endpos > total_size) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3753 range = total_size - startpos; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3754 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3755 /* If the search isn't to be a backwards one, don't waste time in a |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3756 search for a pattern that must be anchored. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3757 if (bufp->used > 0 && (re_opcode_t) bufp->buffer[0] == begbuf && range > 0) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3758 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3759 if (startpos > 0) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3760 return -1; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3761 else |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3762 range = 1; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3763 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3764 |
|
481
35afc74165b7
(re_search_2): If pattern starts with \=, optimize search.
Richard Stallman <rms@gnu.org>
parents:
480
diff
changeset
|
3765 #ifdef emacs |
|
35afc74165b7
(re_search_2): If pattern starts with \=, optimize search.
Richard Stallman <rms@gnu.org>
parents:
480
diff
changeset
|
3766 /* In a forward search for something that starts with \=. |
|
35afc74165b7
(re_search_2): If pattern starts with \=, optimize search.
Richard Stallman <rms@gnu.org>
parents:
480
diff
changeset
|
3767 don't keep searching past point. */ |
|
35afc74165b7
(re_search_2): If pattern starts with \=, optimize search.
Richard Stallman <rms@gnu.org>
parents:
480
diff
changeset
|
3768 if (bufp->used > 0 && (re_opcode_t) bufp->buffer[0] == at_dot && range > 0) |
|
35afc74165b7
(re_search_2): If pattern starts with \=, optimize search.
Richard Stallman <rms@gnu.org>
parents:
480
diff
changeset
|
3769 { |
|
35afc74165b7
(re_search_2): If pattern starts with \=, optimize search.
Richard Stallman <rms@gnu.org>
parents:
480
diff
changeset
|
3770 range = PT - startpos; |
|
35afc74165b7
(re_search_2): If pattern starts with \=, optimize search.
Richard Stallman <rms@gnu.org>
parents:
480
diff
changeset
|
3771 if (range <= 0) |
|
35afc74165b7
(re_search_2): If pattern starts with \=, optimize search.
Richard Stallman <rms@gnu.org>
parents:
480
diff
changeset
|
3772 return -1; |
|
35afc74165b7
(re_search_2): If pattern starts with \=, optimize search.
Richard Stallman <rms@gnu.org>
parents:
480
diff
changeset
|
3773 } |
|
35afc74165b7
(re_search_2): If pattern starts with \=, optimize search.
Richard Stallman <rms@gnu.org>
parents:
480
diff
changeset
|
3774 #endif /* emacs */ |
|
35afc74165b7
(re_search_2): If pattern starts with \=, optimize search.
Richard Stallman <rms@gnu.org>
parents:
480
diff
changeset
|
3775 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3776 /* Update the fastmap now if not correct already. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3777 if (fastmap && !bufp->fastmap_accurate) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3778 if (re_compile_fastmap (bufp) == -2) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3779 return -2; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3780 |
|
678
bd677f8ba924
(re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents:
677
diff
changeset
|
3781 /* See whether the pattern is anchored. */ |
|
bd677f8ba924
(re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents:
677
diff
changeset
|
3782 if (bufp->buffer[0] == begline) |
|
bd677f8ba924
(re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents:
677
diff
changeset
|
3783 anchored_start = 1; |
|
bd677f8ba924
(re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents:
677
diff
changeset
|
3784 |
| 939 | 3785 #ifdef emacs |
| 3786 SETUP_SYNTAX_TABLE_FOR_OBJECT (re_match_object, | |
| 941 | 3787 POS_AS_IN_BUFFER (startpos > 0 |
| 939 | 3788 ? startpos - 1 : startpos), |
| 3789 1); | |
| 3790 #endif | |
| 3791 | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3792 /* Loop through the string, looking for a place to start matching. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3793 for (;;) |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3794 { |
|
678
bd677f8ba924
(re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents:
677
diff
changeset
|
3795 /* If the pattern is anchored, |
|
bd677f8ba924
(re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents:
677
diff
changeset
|
3796 skip quickly past places we cannot match. |
|
bd677f8ba924
(re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents:
677
diff
changeset
|
3797 We don't bother to treat startpos == 0 specially |
|
bd677f8ba924
(re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents:
677
diff
changeset
|
3798 because that case doesn't repeat. */ |
|
bd677f8ba924
(re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents:
677
diff
changeset
|
3799 if (anchored_start && startpos > 0) |
|
bd677f8ba924
(re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents:
677
diff
changeset
|
3800 { |
|
bd677f8ba924
(re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents:
677
diff
changeset
|
3801 if (! (bufp->newline_anchor |
|
bd677f8ba924
(re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents:
677
diff
changeset
|
3802 && ((startpos <= size1 ? string1[startpos - 1] |
|
bd677f8ba924
(re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents:
677
diff
changeset
|
3803 : string2[startpos - size1 - 1]) |
|
bd677f8ba924
(re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents:
677
diff
changeset
|
3804 == '\n'))) |
|
bd677f8ba924
(re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents:
677
diff
changeset
|
3805 goto advance; |
|
bd677f8ba924
(re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents:
677
diff
changeset
|
3806 } |
|
bd677f8ba924
(re_search_2): Optimize regexp that starts with ^.
Richard Stallman <rms@gnu.org>
parents:
677
diff
changeset
|
3807 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3808 /* If a fastmap is supplied, skip quickly over characters that |
| 941 | 3809 cannot be the start of a match. If the pattern can match the |
| 3810 null string, however, we don't need to skip characters; we want | |
| 3811 the first null string. */ | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3812 if (fastmap && startpos < total_size && !bufp->can_be_null) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3813 { |
| 941 | 3814 if (range > 0) /* Searching forwards. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3815 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3816 register const char *d; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3817 register int lim = 0; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3818 int irange = range; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3819 |
| 941 | 3820 if (startpos < size1 && startpos + range >= size1) |
| 3821 lim = range - (size1 - startpos); | |
| 939 | 3822 |
| 3823 d = POS_ADDR_VSTRING (startpos); | |
| 3824 | |
| 941 | 3825 /* Written out as an if-else to avoid testing `translate' |
| 3826 inside the loop. */ | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3827 if (translate) |
| 941 | 3828 while (range > lim |
| 3829 && !fastmap[(unsigned char) | |
|
963
ed0235161e4b
(TRANSLATE, re_search_2, re_match_2_internal,bcmp_translate):
Richard Stallman <rms@gnu.org>
parents:
961
diff
changeset
|
3830 RE_TRANSLATE (translate, (unsigned char) *d++)]) |
| 941 | 3831 range--; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3832 else |
| 941 | 3833 while (range > lim && !fastmap[(unsigned char) *d++]) |
| 3834 range--; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3835 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3836 startpos += irange - range; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3837 } |
| 941 | 3838 else /* Searching backwards. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3839 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3840 register char c = (size1 == 0 || startpos >= size1 |
| 941 | 3841 ? string2[startpos - size1] |
| 3842 : string1[startpos]); | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3843 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3844 if (!fastmap[(unsigned char) TRANSLATE (c)]) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3845 goto advance; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3846 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3847 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3848 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3849 /* If can't match the null string, and that's all we have left, fail. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3850 if (range >= 0 && startpos == total_size && fastmap |
| 941 | 3851 && !bufp->can_be_null) |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3852 return -1; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3853 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3854 val = re_match_2_internal (bufp, string1, size1, string2, size2, |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3855 startpos, regs, stop); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3856 #ifndef REGEX_MALLOC |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3857 #ifdef C_ALLOCA |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3858 alloca (0); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3859 #endif |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3860 #endif |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3861 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3862 if (val >= 0) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3863 return startpos; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3864 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3865 if (val == -2) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3866 return -2; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3867 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3868 advance: |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3869 if (!range) |
| 941 | 3870 break; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3871 else if (range > 0) |
| 941 | 3872 { |
| 939 | 3873 /* Update STARTPOS to the next character boundary. */ |
| 3874 if (multibyte) | |
| 3875 { | |
|
961
6959c7741ed2
(re_search_2): Cast result of POS_ADDR_VSTRING.
Richard Stallman <rms@gnu.org>
parents:
942
diff
changeset
|
3876 const unsigned char *p |
|
6959c7741ed2
(re_search_2): Cast result of POS_ADDR_VSTRING.
Richard Stallman <rms@gnu.org>
parents:
942
diff
changeset
|
3877 = (const unsigned char *) POS_ADDR_VSTRING (startpos); |
|
6959c7741ed2
(re_search_2): Cast result of POS_ADDR_VSTRING.
Richard Stallman <rms@gnu.org>
parents:
942
diff
changeset
|
3878 const unsigned char *pend |
|
6959c7741ed2
(re_search_2): Cast result of POS_ADDR_VSTRING.
Richard Stallman <rms@gnu.org>
parents:
942
diff
changeset
|
3879 = (const unsigned char *) STOP_ADDR_VSTRING (startpos); |
| 939 | 3880 int len = MULTIBYTE_FORM_LENGTH (p, pend - p); |
| 3881 | |
| 3882 range -= len; | |
| 3883 if (range < 0) | |
| 3884 break; | |
| 3885 startpos += len; | |
| 3886 } | |
| 3887 else | |
| 3888 { | |
|
961
6959c7741ed2
(re_search_2): Cast result of POS_ADDR_VSTRING.
Richard Stallman <rms@gnu.org>
parents:
942
diff
changeset
|
3889 range--; |
|
6959c7741ed2
(re_search_2): Cast result of POS_ADDR_VSTRING.
Richard Stallman <rms@gnu.org>
parents:
942
diff
changeset
|
3890 startpos++; |
|
6959c7741ed2
(re_search_2): Cast result of POS_ADDR_VSTRING.
Richard Stallman <rms@gnu.org>
parents:
942
diff
changeset
|
3891 } |
| 679 | 3892 } |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3893 else |
| 941 | 3894 { |
| 3895 range++; | |
| 3896 startpos--; | |
| 939 | 3897 |
| 3898 /* Update STARTPOS to the previous character boundary. */ | |
| 3899 if (multibyte) | |
| 3900 { | |
|
961
6959c7741ed2
(re_search_2): Cast result of POS_ADDR_VSTRING.
Richard Stallman <rms@gnu.org>
parents:
942
diff
changeset
|
3901 const unsigned char *p |
|
6959c7741ed2
(re_search_2): Cast result of POS_ADDR_VSTRING.
Richard Stallman <rms@gnu.org>
parents:
942
diff
changeset
|
3902 = (const unsigned char *) POS_ADDR_VSTRING (startpos); |
| 939 | 3903 int len = 0; |
| 3904 | |
| 3905 /* Find the head of multibyte form. */ | |
| 3906 while (!CHAR_HEAD_P (p)) | |
| 3907 p--, len++; | |
| 3908 | |
| 3909 /* Adjust it. */ | |
| 3910 #if 0 /* XXX */ | |
| 3911 if (MULTIBYTE_FORM_LENGTH (p, len + 1) != (len + 1)) | |
| 3912 ; | |
| 3913 else | |
| 3914 #endif | |
| 3915 { | |
| 3916 range += len; | |
| 3917 if (range > 0) | |
| 3918 break; | |
| 3919 | |
| 3920 startpos -= len; | |
| 3921 } | |
| 3922 } | |
| 941 | 3923 } |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3924 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3925 return -1; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3926 } /* re_search_2 */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3927 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3928 /* Declarations and macros for re_match_2. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3929 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3930 static int bcmp_translate (); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3931 static boolean alt_match_null_string_p (), |
| 941 | 3932 common_op_match_null_string_p (), |
| 3933 group_match_null_string_p (); | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3934 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3935 /* This converts PTR, a pointer into one of the search strings `string1' |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3936 and `string2' into an offset from the beginning of that string. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3937 #define POINTER_TO_OFFSET(ptr) \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3938 (FIRST_STRING_P (ptr) \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3939 ? ((regoff_t) ((ptr) - string1)) \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3940 : ((regoff_t) ((ptr) - string2 + size1))) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3941 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3942 /* Macros for dealing with the split strings in re_match_2. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3943 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3944 #define MATCHING_IN_FIRST_STRING (dend == end_match_1) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3945 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3946 /* Call before fetching a character with *d. This switches over to |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3947 string2 if necessary. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3948 #define PREFETCH() \ |
| 941 | 3949 while (d == dend) \ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3950 { \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3951 /* End of string2 => fail. */ \ |
| 941 | 3952 if (dend == end_match_2) \ |
| 3953 goto fail; \ | |
| 3954 /* End of string1 => advance to string2. */ \ | |
| 3955 d = string2; \ | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3956 dend = end_match_2; \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3957 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3958 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3959 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3960 /* Test if at very beginning or at very end of the virtual concatenation |
| 941 | 3961 of `string1' and `string2'. If only one string, it's `string2'. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3962 #define AT_STRINGS_BEG(d) ((d) == (size1 ? string1 : string2) || !size2) |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
3963 #define AT_STRINGS_END(d) ((d) == end2) |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3964 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3965 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3966 /* Test if D points to a character which is word-constituent. We have |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3967 two special cases to check for: if past the end of string1, look at |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3968 the first character in string2; and if before the beginning of |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3969 string2, look at the last character in string1. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3970 #define WORDCHAR_P(d) \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3971 (SYNTAX ((d) == end1 ? *string2 \ |
| 941 | 3972 : (d) == string2 - 1 ? *(end1 - 1) : *(d)) \ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3973 == Sword) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3974 |
|
521
7089c3a3a164
(AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents:
515
diff
changeset
|
3975 /* Disabled due to a compiler bug -- see comment at case wordbound */ |
| 939 | 3976 |
| 3977 /* The comment at case wordbound is following one, but we don't use | |
| 3978 AT_WORD_BOUNDARY anymore to support multibyte form. | |
| 3979 | |
| 3980 The DEC Alpha C compiler 3.x generates incorrect code for the | |
| 941 | 3981 test WORDCHAR_P (d - 1) != WORDCHAR_P (d) in the expansion of |
| 3982 AT_WORD_BOUNDARY, so this code is disabled. Expanding the | |
| 939 | 3983 macro and introducing temporary variables works around the bug. */ |
| 3984 | |
|
521
7089c3a3a164
(AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents:
515
diff
changeset
|
3985 #if 0 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3986 /* Test if the character before D and the one at D differ with respect |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3987 to being word-constituent. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3988 #define AT_WORD_BOUNDARY(d) \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3989 (AT_STRINGS_BEG (d) || AT_STRINGS_END (d) \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3990 || WORDCHAR_P (d - 1) != WORDCHAR_P (d)) |
|
521
7089c3a3a164
(AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents:
515
diff
changeset
|
3991 #endif |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3992 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3993 /* Free everything we malloc. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3994 #ifdef MATCH_MAY_ALLOCATE |
| 942 | 3995 #define FREE_VAR(var) if (var) { REGEX_FREE (var); var = NULL; } else |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3996 #define FREE_VARIABLES() \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3997 do { \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3998 REGEX_FREE_STACK (fail_stack.stack); \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
3999 FREE_VAR (regstart); \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4000 FREE_VAR (regend); \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4001 FREE_VAR (old_regstart); \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4002 FREE_VAR (old_regend); \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4003 FREE_VAR (best_regstart); \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4004 FREE_VAR (best_regend); \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4005 FREE_VAR (reg_info); \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4006 FREE_VAR (reg_dummy); \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4007 FREE_VAR (reg_info_dummy); \ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4008 } while (0) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4009 #else |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4010 #define FREE_VARIABLES() ((void)0) /* Do nothing! But inhibit gcc warning. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4011 #endif /* not MATCH_MAY_ALLOCATE */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4012 |
| 941 | 4013 /* These values must meet several constraints. They must not be valid |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4014 register values; since we have a limit of 255 registers (because |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4015 we use only one byte in the pattern for the register number), we can |
| 941 | 4016 use numbers larger than 255. They must differ by 1, because of |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4017 NUM_FAILURE_ITEMS above. And the value for the lowest register must |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4018 be larger than the value for the highest register, so we do not try |
| 941 | 4019 to actually save any registers when none are active. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4020 #define NO_HIGHEST_ACTIVE_REG (1 << BYTEWIDTH) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4021 #define NO_LOWEST_ACTIVE_REG (NO_HIGHEST_ACTIVE_REG + 1) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4022 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4023 /* Matching routines. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4024 |
| 941 | 4025 #ifndef emacs /* Emacs never uses this. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4026 /* re_match is like re_match_2 except it takes only a single string. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4027 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4028 int |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4029 re_match (bufp, string, size, pos, regs) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4030 struct re_pattern_buffer *bufp; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4031 const char *string; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4032 int size, pos; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4033 struct re_registers *regs; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4034 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4035 int result = re_match_2_internal (bufp, NULL, 0, string, size, |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4036 pos, regs, size); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4037 alloca (0); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4038 return result; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4039 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4040 #endif /* not emacs */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4041 |
| 939 | 4042 #ifdef emacs |
| 4043 /* In Emacs, this is the string or buffer in which we | |
| 941 | 4044 are matching. It is used for looking up syntax properties. */ |
| 939 | 4045 Lisp_Object re_match_object; |
| 4046 #endif | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4047 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4048 /* re_match_2 matches the compiled pattern in BUFP against the |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4049 the (virtual) concatenation of STRING1 and STRING2 (of length SIZE1 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4050 and SIZE2, respectively). We start matching at POS, and stop |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4051 matching at STOP. |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4052 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4053 If REGS is non-null and the `no_sub' field of BUFP is nonzero, we |
| 941 | 4054 store offsets for the substring each group matched in REGS. See the |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4055 documentation for exactly how many groups we fill. |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4056 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4057 We return -1 if no match, -2 if an internal error (such as the |
| 941 | 4058 failure stack overflowing). Otherwise, we return the length of the |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4059 matched substring. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4060 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4061 int |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4062 re_match_2 (bufp, string1, size1, string2, size2, pos, regs, stop) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4063 struct re_pattern_buffer *bufp; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4064 const char *string1, *string2; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4065 int size1, size2; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4066 int pos; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4067 struct re_registers *regs; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4068 int stop; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4069 { |
| 939 | 4070 int result; |
| 941 | 4071 |
| 939 | 4072 #ifdef emacs |
| 941 | 4073 SETUP_SYNTAX_TABLE_FOR_OBJECT (re_match_object, |
| 4074 POS_AS_IN_BUFFER (pos > 0 ? pos - 1 : pos), | |
| 939 | 4075 1); |
| 4076 #endif | |
| 4077 | |
| 4078 result = re_match_2_internal (bufp, string1, size1, string2, size2, | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4079 pos, regs, stop); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4080 alloca (0); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4081 return result; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4082 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4083 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4084 /* This is a separate function so that we can force an alloca cleanup |
| 941 | 4085 afterwards. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4086 static int |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4087 re_match_2_internal (bufp, string1, size1, string2, size2, pos, regs, stop) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4088 struct re_pattern_buffer *bufp; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4089 const char *string1, *string2; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4090 int size1, size2; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4091 int pos; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4092 struct re_registers *regs; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4093 int stop; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4094 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4095 /* General temporaries. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4096 int mcnt; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4097 unsigned char *p1; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4098 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4099 /* Just past the end of the corresponding string. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4100 const char *end1, *end2; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4101 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4102 /* Pointers into string1 and string2, just past the last characters in |
| 941 | 4103 each to consider matching. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4104 const char *end_match_1, *end_match_2; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4105 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4106 /* Where we are in the data, and the end of the current string. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4107 const char *d, *dend; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4108 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4109 /* Where we are in the pattern, and the end of the pattern. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4110 unsigned char *p = bufp->buffer; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4111 register unsigned char *pend = p + bufp->used; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4112 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4113 /* Mark the opcode just after a start_memory, so we can test for an |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4114 empty subpattern when we get to the stop_memory. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4115 unsigned char *just_past_start_mem = 0; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4116 |
| 941 | 4117 /* We use this to map every character in the string. */ |
|
501
f29b13c2cefd
(TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents:
490
diff
changeset
|
4118 RE_TRANSLATE_TYPE translate = bufp->translate; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4119 |
| 941 | 4120 /* Nonzero if we have to concern multibyte character. */ |
| 939 | 4121 int multibyte = bufp->multibyte; |
| 4122 | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4123 /* Failure point stack. Each place that can handle a failure further |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4124 down the line pushes a failure point on this stack. It consists of |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4125 restart, regend, and reg_info for all registers corresponding to |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4126 the subexpressions we're currently inside, plus the number of such |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4127 registers, and, finally, two char *'s. The first char * is where |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4128 to resume scanning the pattern; the second one is where to resume |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4129 scanning the strings. If the latter is zero, the failure point is |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4130 a ``dummy''; if a failure happens and the failure point is a dummy, |
| 941 | 4131 it gets discarded and the next next one is tried. */ |
| 4132 #ifdef MATCH_MAY_ALLOCATE /* otherwise, this is global. */ | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4133 fail_stack_type fail_stack; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4134 #endif |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4135 #ifdef DEBUG |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4136 static unsigned failure_id = 0; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4137 unsigned nfailure_points_pushed = 0, nfailure_points_popped = 0; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4138 #endif |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4139 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4140 /* This holds the pointer to the failure stack, when |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4141 it is allocated relocatably. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4142 fail_stack_elt_t *failure_stack_ptr; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4143 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4144 /* We fill all the registers internally, independent of what we |
| 941 | 4145 return, for use in backreferences. The number here includes |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4146 an element for register zero. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4147 unsigned num_regs = bufp->re_nsub + 1; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4148 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4149 /* The currently active registers. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4150 unsigned lowest_active_reg = NO_LOWEST_ACTIVE_REG; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4151 unsigned highest_active_reg = NO_HIGHEST_ACTIVE_REG; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4152 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4153 /* Information on the contents of registers. These are pointers into |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4154 the input strings; they record just what was matched (on this |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4155 attempt) by a subexpression part of the pattern, that is, the |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4156 regnum-th regstart pointer points to where in the pattern we began |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4157 matching and the regnum-th regend points to right after where we |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4158 stopped matching the regnum-th subexpression. (The zeroth register |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4159 keeps track of what the whole pattern matches.) */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4160 #ifdef MATCH_MAY_ALLOCATE /* otherwise, these are global. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4161 const char **regstart, **regend; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4162 #endif |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4163 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4164 /* If a group that's operated upon by a repetition operator fails to |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4165 match anything, then the register for its start will need to be |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4166 restored because it will have been set to wherever in the string we |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4167 are when we last see its open-group operator. Similarly for a |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4168 register's end. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4169 #ifdef MATCH_MAY_ALLOCATE /* otherwise, these are global. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4170 const char **old_regstart, **old_regend; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4171 #endif |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4172 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4173 /* The is_active field of reg_info helps us keep track of which (possibly |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4174 nested) subexpressions we are currently in. The matched_something |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4175 field of reg_info[reg_num] helps us tell whether or not we have |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4176 matched any of the pattern so far this time through the reg_num-th |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4177 subexpression. These two fields get reset each time through any |
| 941 | 4178 loop their register is in. */ |
| 4179 #ifdef MATCH_MAY_ALLOCATE /* otherwise, this is global. */ | |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4180 register_info_type *reg_info; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4181 #endif |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4182 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4183 /* The following record the register info as found in the above |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4184 variables when we find a match better than any we've seen before. |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4185 This happens as we backtrack through the failure points, which in |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4186 turn happens only if we have not yet matched the entire string. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4187 unsigned best_regs_set = false; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4188 #ifdef MATCH_MAY_ALLOCATE /* otherwise, these are global. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4189 const char **best_regstart, **best_regend; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4190 #endif |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4191 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4192 /* Logically, this is `best_regend[0]'. But we don't want to have to |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4193 allocate space for that if we're not allocating space for anything |
| 941 | 4194 else (see below). Also, we never need info about register 0 for |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4195 any of the other register vectors, and it seems rather a kludge to |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4196 treat `best_regend' differently than the rest. So we keep track of |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4197 the end of the best match so far in a separate variable. We |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4198 initialize this to NULL so that when we backtrack the first time |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4199 and need to test it, it's not garbage. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4200 const char *match_end = NULL; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4201 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4202 /* This helps SET_REGS_MATCHED avoid doing redundant work. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4203 int set_regs_matched_done = 0; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4204 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4205 /* Used when we pop values we don't care about. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4206 #ifdef MATCH_MAY_ALLOCATE /* otherwise, these are global. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4207 const char **reg_dummy; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4208 register_info_type *reg_info_dummy; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4209 #endif |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4210 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4211 #ifdef DEBUG |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4212 /* Counts the total number of registers pushed. */ |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4213 unsigned num_regs_pushed = 0; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4214 #endif |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4215 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4216 DEBUG_PRINT1 ("\n\nEntering re_match_2.\n"); |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4217 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4218 INIT_FAIL_STACK (); |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4219 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4220 #ifdef MATCH_MAY_ALLOCATE |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4221 /* Do not bother to initialize all the register variables if there are |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4222 no groups in the pattern, as it takes a fair amount of time. If |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4223 there are groups, we include space for register 0 (the whole |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4224 pattern), even though we never use it, since it simplifies the |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4225 array indexing. We should fix this. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4226 if (bufp->re_nsub) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4227 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4228 regstart = REGEX_TALLOC (num_regs, const char *); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4229 regend = REGEX_TALLOC (num_regs, const char *); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4230 old_regstart = REGEX_TALLOC (num_regs, const char *); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4231 old_regend = REGEX_TALLOC (num_regs, const char *); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4232 best_regstart = REGEX_TALLOC (num_regs, const char *); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4233 best_regend = REGEX_TALLOC (num_regs, const char *); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4234 reg_info = REGEX_TALLOC (num_regs, register_info_type); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4235 reg_dummy = REGEX_TALLOC (num_regs, const char *); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4236 reg_info_dummy = REGEX_TALLOC (num_regs, register_info_type); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4237 |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4238 if (!(regstart && regend && old_regstart && old_regend && reg_info |
| 941 | 4239 && best_regstart && best_regend && reg_dummy && reg_info_dummy)) |
| 4240 { | |
| 4241 FREE_VARIABLES (); | |
| 4242 return -2; | |
| 4243 } | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4244 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4245 else |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4246 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4247 /* We must initialize all our variables to NULL, so that |
| 941 | 4248 `FREE_VARIABLES' doesn't try to free them. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4249 regstart = regend = old_regstart = old_regend = best_regstart |
| 941 | 4250 = best_regend = reg_dummy = NULL; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4251 reg_info = reg_info_dummy = (register_info_type *) NULL; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4252 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4253 #endif /* MATCH_MAY_ALLOCATE */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4254 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4255 /* The starting position is bogus. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4256 if (pos < 0 || pos > size1 + size2) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4257 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4258 FREE_VARIABLES (); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4259 return -1; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4260 } |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4261 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4262 /* Initialize subexpression text positions to -1 to mark ones that no |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4263 start_memory/stop_memory has been seen for. Also initialize the |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4264 register information struct. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4265 for (mcnt = 1; mcnt < num_regs; mcnt++) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4266 { |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4267 regstart[mcnt] = regend[mcnt] |
| 941 | 4268 = old_regstart[mcnt] = old_regend[mcnt] = REG_UNSET_VALUE; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4269 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4270 REG_MATCH_NULL_STRING_P (reg_info[mcnt]) = MATCH_NULL_UNSET_VALUE; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4271 IS_ACTIVE (reg_info[mcnt]) = 0; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4272 MATCHED_SOMETHING (reg_info[mcnt]) = 0; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4273 EVER_MATCHED_SOMETHING (reg_info[mcnt]) = 0; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4274 } |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4275 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4276 /* We move `string1' into `string2' if the latter's empty -- but not if |
| 941 | 4277 `string1' is null. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4278 if (size2 == 0 && string1 != NULL) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4279 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4280 string2 = string1; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4281 size2 = size1; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4282 string1 = 0; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4283 size1 = 0; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4284 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4285 end1 = string1 + size1; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4286 end2 = string2 + size2; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4287 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4288 /* Compute where to stop matching, within the two strings. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4289 if (stop <= size1) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4290 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4291 end_match_1 = string1 + stop; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4292 end_match_2 = string2; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4293 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4294 else |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4295 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4296 end_match_1 = end1; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4297 end_match_2 = string2 + stop - size1; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4298 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4299 |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4300 /* `p' scans through the pattern as `d' scans through the data. |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4301 `dend' is the end of the input string that `d' points within. `d' |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4302 is advanced into the following input string whenever necessary, but |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4303 this happens before fetching; therefore, at the beginning of the |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4304 loop, `d' can be pointing at the end of a string, but it cannot |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4305 equal `string2'. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4306 if (size1 > 0 && pos <= size1) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4307 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4308 d = string1 + pos; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4309 dend = end_match_1; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4310 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4311 else |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4312 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4313 d = string2 + pos - size1; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4314 dend = end_match_2; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4315 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4316 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4317 DEBUG_PRINT1 ("The compiled pattern is: "); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4318 DEBUG_PRINT_COMPILED_PATTERN (bufp, p, pend); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4319 DEBUG_PRINT1 ("The string to match is: `"); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4320 DEBUG_PRINT_DOUBLE_STRING (d, string1, size1, string2, size2); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4321 DEBUG_PRINT1 ("'\n"); |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4322 |
| 941 | 4323 /* This loops over pattern commands. It exits by returning from the |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4324 function if the match is complete, or it drops through if the match |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4325 fails at this starting point in the input data. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4326 for (;;) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4327 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4328 DEBUG_PRINT2 ("\n0x%x: ", p); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4329 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4330 if (p == pend) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4331 { /* End of pattern means we might have succeeded. */ |
| 941 | 4332 DEBUG_PRINT1 ("end of pattern ... "); |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4333 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4334 /* If we haven't matched the entire string, and we want the |
| 941 | 4335 longest match, try backtracking. */ |
| 4336 if (d != end_match_2) | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4337 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4338 /* 1 if this match ends in the same string (string1 or string2) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4339 as the best previous match. */ |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4340 boolean same_str_p = (FIRST_STRING_P (match_end) |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4341 == MATCHING_IN_FIRST_STRING); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4342 /* 1 if this match is the best seen so far. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4343 boolean best_match_p; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4344 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4345 /* AIX compiler got confused when this was combined |
| 941 | 4346 with the previous declaration. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4347 if (same_str_p) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4348 best_match_p = d > match_end; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4349 else |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4350 best_match_p = !MATCHING_IN_FIRST_STRING; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4351 |
| 941 | 4352 DEBUG_PRINT1 ("backtracking.\n"); |
| 4353 | |
| 4354 if (!FAIL_STACK_EMPTY ()) | |
| 4355 { /* More failure points to try. */ | |
| 4356 | |
| 4357 /* If exceeds best match so far, save it. */ | |
| 4358 if (!best_regs_set || best_match_p) | |
| 4359 { | |
| 4360 best_regs_set = true; | |
| 4361 match_end = d; | |
| 4362 | |
| 4363 DEBUG_PRINT1 ("\nSAVING match as best so far.\n"); | |
| 4364 | |
| 4365 for (mcnt = 1; mcnt < num_regs; mcnt++) | |
| 4366 { | |
| 4367 best_regstart[mcnt] = regstart[mcnt]; | |
| 4368 best_regend[mcnt] = regend[mcnt]; | |
| 4369 } | |
| 4370 } | |
| 4371 goto fail; | |
| 4372 } | |
| 4373 | |
| 4374 /* If no failure points, don't restore garbage. And if | |
| 4375 last match is real best match, don't restore second | |
| 4376 best one. */ | |
| 4377 else if (best_regs_set && !best_match_p) | |
| 4378 { | |
| 4379 restore_best_regs: | |
| 4380 /* Restore best match. It may happen that `dend == | |
| 4381 end_match_1' while the restored d is in string2. | |
| 4382 For example, the pattern `x.*y.*z' against the | |
| 4383 strings `x-' and `y-z-', if the two strings are | |
| 4384 not consecutive in memory. */ | |
| 4385 DEBUG_PRINT1 ("Restoring best registers.\n"); | |
| 4386 | |
| 4387 d = match_end; | |
| 4388 dend = ((d >= string1 && d <= end1) | |
| 4389 ? end_match_1 : end_match_2); | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4390 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4391 for (mcnt = 1; mcnt < num_regs; mcnt++) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4392 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4393 regstart[mcnt] = best_regstart[mcnt]; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4394 regend[mcnt] = best_regend[mcnt]; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4395 } |
| 941 | 4396 } |
| 4397 } /* d != end_match_2 */ | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4398 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4399 succeed_label: |
| 941 | 4400 DEBUG_PRINT1 ("Accepting match.\n"); |
| 4401 | |
| 4402 /* If caller wants register contents data back, do it. */ | |
| 4403 if (regs && !bufp->no_sub) | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4404 { |
| 941 | 4405 /* Have the register data arrays been allocated? */ |
| 4406 if (bufp->regs_allocated == REGS_UNALLOCATED) | |
| 4407 { /* No. So allocate them with malloc. We need one | |
| 4408 extra element beyond `num_regs' for the `-1' marker | |
| 4409 GNU code uses. */ | |
| 4410 regs->num_regs = MAX (RE_NREGS, num_regs + 1); | |
| 4411 regs->start = TALLOC (regs->num_regs, regoff_t); | |
| 4412 regs->end = TALLOC (regs->num_regs, regoff_t); | |
| 4413 if (regs->start == NULL || regs->end == NULL) | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4414 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4415 FREE_VARIABLES (); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4416 return -2; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4417 } |
| 941 | 4418 bufp->regs_allocated = REGS_REALLOCATE; |
| 4419 } | |
| 4420 else if (bufp->regs_allocated == REGS_REALLOCATE) | |
| 4421 { /* Yes. If we need more elements than were already | |
| 4422 allocated, reallocate them. If we need fewer, just | |
| 4423 leave it alone. */ | |
| 4424 if (regs->num_regs < num_regs + 1) | |
| 4425 { | |
| 4426 regs->num_regs = num_regs + 1; | |
| 4427 RETALLOC (regs->start, regs->num_regs, regoff_t); | |
| 4428 RETALLOC (regs->end, regs->num_regs, regoff_t); | |
| 4429 if (regs->start == NULL || regs->end == NULL) | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4430 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4431 FREE_VARIABLES (); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4432 return -2; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4433 } |
| 941 | 4434 } |
| 4435 } | |
| 4436 else | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4437 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4438 /* These braces fend off a "empty body in an else-statement" |
| 941 | 4439 warning under GCC when assert expands to nothing. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4440 assert (bufp->regs_allocated == REGS_FIXED); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4441 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4442 |
| 941 | 4443 /* Convert the pointer data in `regstart' and `regend' to |
| 4444 indices. Register zero has to be set differently, | |
| 4445 since we haven't kept track of any info for it. */ | |
| 4446 if (regs->num_regs > 0) | |
| 4447 { | |
| 4448 regs->start[0] = pos; | |
| 4449 regs->end[0] = (MATCHING_IN_FIRST_STRING | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4450 ? ((regoff_t) (d - string1)) |
| 941 | 4451 : ((regoff_t) (d - string2 + size1))); |
| 4452 } | |
| 4453 | |
| 4454 /* Go through the first `min (num_regs, regs->num_regs)' | |
| 4455 registers, since that is all we initialized. */ | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4456 for (mcnt = 1; mcnt < MIN (num_regs, regs->num_regs); mcnt++) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4457 { |
| 941 | 4458 if (REG_UNSET (regstart[mcnt]) || REG_UNSET (regend[mcnt])) |
| 4459 regs->start[mcnt] = regs->end[mcnt] = -1; | |
| 4460 else | |
| 4461 { | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4462 regs->start[mcnt] |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4463 = (regoff_t) POINTER_TO_OFFSET (regstart[mcnt]); |
| 941 | 4464 regs->end[mcnt] |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4465 = (regoff_t) POINTER_TO_OFFSET (regend[mcnt]); |
| 941 | 4466 } |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4467 } |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4468 |
| 941 | 4469 /* If the regs structure we return has more elements than |
| 4470 were in the pattern, set the extra elements to -1. If | |
| 4471 we (re)allocated the registers, this is the case, | |
| 4472 because we always allocate enough to have at least one | |
| 4473 -1 at the end. */ | |
| 4474 for (mcnt = num_regs; mcnt < regs->num_regs; mcnt++) | |
| 4475 regs->start[mcnt] = regs->end[mcnt] = -1; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4476 } /* regs && !bufp->no_sub */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4477 |
| 941 | 4478 DEBUG_PRINT4 ("%u failure points pushed, %u popped (%u remain).\n", |
| 4479 nfailure_points_pushed, nfailure_points_popped, | |
| 4480 nfailure_points_pushed - nfailure_points_popped); | |
| 4481 DEBUG_PRINT2 ("%u registers pushed.\n", num_regs_pushed); | |
| 4482 | |
| 4483 mcnt = d - pos - (MATCHING_IN_FIRST_STRING | |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4484 ? string1 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4485 : string2 - size1); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4486 |
| 941 | 4487 DEBUG_PRINT2 ("Returning %d from re_match_2.\n", mcnt); |
| 4488 | |
| 4489 FREE_VARIABLES (); | |
| 4490 return mcnt; | |
| 4491 } | |
| 4492 | |
| 4493 /* Otherwise match next pattern command. */ | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4494 switch (SWITCH_ENUM_CAST ((re_opcode_t) *p++)) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4495 { |
| 941 | 4496 /* Ignore these. Used to ignore the n of succeed_n's which |
| 4497 currently have n == 0. */ | |
| 4498 case no_op: | |
| 4499 DEBUG_PRINT1 ("EXECUTING no_op.\n"); | |
| 4500 break; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4501 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4502 case succeed: |
| 941 | 4503 DEBUG_PRINT1 ("EXECUTING succeed.\n"); |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4504 goto succeed_label; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4505 |
| 941 | 4506 /* Match the next n pattern characters exactly. The following |
| 4507 byte in the pattern defines n, and the n bytes after that | |
| 4508 are the characters to match. */ | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4509 case exactn: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4510 mcnt = *p++; |
| 941 | 4511 DEBUG_PRINT2 ("EXECUTING exactn %d.\n", mcnt); |
| 4512 | |
| 4513 /* This is written out as an if-else so we don't waste time | |
| 4514 testing `translate' inside the loop. */ | |
| 4515 if (translate) | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4516 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4517 do |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4518 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4519 PREFETCH (); |
|
963
ed0235161e4b
(TRANSLATE, re_search_2, re_match_2_internal,bcmp_translate):
Richard Stallman <rms@gnu.org>
parents:
961
diff
changeset
|
4520 if ((unsigned char) RE_TRANSLATE (translate, (unsigned char) *d++) |
|
501
f29b13c2cefd
(TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents:
490
diff
changeset
|
4521 != (unsigned char) *p++) |
| 941 | 4522 goto fail; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4523 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4524 while (--mcnt); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4525 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4526 else |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4527 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4528 do |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4529 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4530 PREFETCH (); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4531 if (*d++ != (char) *p++) goto fail; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4532 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4533 while (--mcnt); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4534 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4535 SET_REGS_MATCHED (); |
| 941 | 4536 break; |
| 4537 | |
| 4538 | |
| 4539 /* Match any character except possibly a newline or a null. */ | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4540 case anychar: |
| 941 | 4541 DEBUG_PRINT1 ("EXECUTING anychar.\n"); |
| 4542 | |
| 4543 PREFETCH (); | |
| 4544 | |
| 4545 if ((!(bufp->syntax & RE_DOT_NEWLINE) && TRANSLATE (*d) == '\n') | |
| 4546 || (bufp->syntax & RE_DOT_NOT_NULL && TRANSLATE (*d) == '\000')) | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4547 goto fail; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4548 |
| 941 | 4549 SET_REGS_MATCHED (); |
| 4550 DEBUG_PRINT2 (" Matched `%d'.\n", *d); | |
| 939 | 4551 d += multibyte ? MULTIBYTE_FORM_LENGTH (d, dend - d) : 1; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4552 break; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4553 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4554 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4555 case charset: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4556 case charset_not: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4557 { |
| 939 | 4558 register unsigned int c; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4559 boolean not = (re_opcode_t) *(p - 1) == charset_not; |
| 939 | 4560 int len; |
| 4561 | |
| 4562 /* Start of actual range_table, or end of bitmap if there is no | |
| 4563 range table. */ | |
| 4564 unsigned char *range_table; | |
| 4565 | |
| 941 | 4566 /* Nonzero if there is range table. */ |
| 939 | 4567 int range_table_exists; |
| 4568 | |
| 941 | 4569 /* Number of ranges of range table. Not in bytes. */ |
| 939 | 4570 int count; |
| 4571 | |
| 941 | 4572 DEBUG_PRINT2 ("EXECUTING charset%s.\n", not ? "_not" : ""); |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4573 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4574 PREFETCH (); |
| 939 | 4575 c = (unsigned char) *d; |
| 4576 | |
| 4577 range_table = CHARSET_RANGE_TABLE (&p[-1]); /* Past the bitmap. */ | |
| 4578 range_table_exists = CHARSET_RANGE_TABLE_EXISTS_P (&p[-1]); | |
| 4579 if (range_table_exists) | |
| 4580 EXTRACT_NUMBER_AND_INCR (count, range_table); | |
| 4581 else | |
| 4582 count = 0; | |
| 4583 | |
| 4584 if (multibyte && BASE_LEADING_CODE_P (c)) | |
| 4585 c = STRING_CHAR_AND_LENGTH (d, dend - d, len); | |
| 4586 | |
| 4587 if (SINGLE_BYTE_CHAR_P (c)) | |
| 4588 { /* Lookup bitmap. */ | |
| 4589 c = TRANSLATE (c); /* The character to match. */ | |
| 4590 len = 1; | |
| 4591 | |
| 4592 /* Cast to `unsigned' instead of `unsigned char' in | |
| 4593 case the bit list is a full 32 bytes long. */ | |
| 4594 if (c < (unsigned) (CHARSET_BITMAP_SIZE (&p[-1]) * BYTEWIDTH) | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4595 && p[1 + c / BYTEWIDTH] & (1 << (c % BYTEWIDTH))) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4596 not = !not; |
| 939 | 4597 } |
| 4598 else if (range_table_exists) | |
| 4599 CHARSET_LOOKUP_RANGE_TABLE_RAW (not, c, range_table, count); | |
| 4600 | |
| 4601 p = CHARSET_RANGE_TABLE_END (range_table, count); | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4602 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4603 if (!not) goto fail; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4604 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4605 SET_REGS_MATCHED (); |
| 939 | 4606 d += len; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4607 break; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4608 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4609 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4610 |
| 941 | 4611 /* The beginning of a group is represented by start_memory. |
| 4612 The arguments are the register number in the next byte, and the | |
| 4613 number of groups inner to this one in the next. The text | |
| 4614 matched within the group is recorded (in the internal | |
| 4615 registers data structure) under the register number. */ | |
| 4616 case start_memory: | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4617 DEBUG_PRINT3 ("EXECUTING start_memory %d (%d):\n", *p, p[1]); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4618 |
| 941 | 4619 /* Find out if this group can match the empty string. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4620 p1 = p; /* To send to group_match_null_string_p. */ |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4621 |
| 941 | 4622 if (REG_MATCH_NULL_STRING_P (reg_info[*p]) == MATCH_NULL_UNSET_VALUE) |
| 4623 REG_MATCH_NULL_STRING_P (reg_info[*p]) | |
| 4624 = group_match_null_string_p (&p1, pend, reg_info); | |
| 4625 | |
| 4626 /* Save the position in the string where we were the last time | |
| 4627 we were at this open-group operator in case the group is | |
| 4628 operated upon by a repetition operator, e.g., with `(a*)*b' | |
| 4629 against `ab'; then we want to ignore where we are now in | |
| 4630 the string in case this attempt to match fails. */ | |
| 4631 old_regstart[*p] = REG_MATCH_NULL_STRING_P (reg_info[*p]) | |
| 4632 ? REG_UNSET (regstart[*p]) ? d : regstart[*p] | |
| 4633 : regstart[*p]; | |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4634 DEBUG_PRINT2 (" old_regstart: %d\n", |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4635 POINTER_TO_OFFSET (old_regstart[*p])); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4636 |
| 941 | 4637 regstart[*p] = d; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4638 DEBUG_PRINT2 (" regstart: %d\n", POINTER_TO_OFFSET (regstart[*p])); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4639 |
| 941 | 4640 IS_ACTIVE (reg_info[*p]) = 1; |
| 4641 MATCHED_SOMETHING (reg_info[*p]) = 0; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4642 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4643 /* Clear this whenever we change the register activity status. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4644 set_regs_matched_done = 0; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4645 |
| 941 | 4646 /* This is the new highest active register. */ |
| 4647 highest_active_reg = *p; | |
| 4648 | |
| 4649 /* If nothing was active before, this is the new lowest active | |
| 4650 register. */ | |
| 4651 if (lowest_active_reg == NO_LOWEST_ACTIVE_REG) | |
| 4652 lowest_active_reg = *p; | |
| 4653 | |
| 4654 /* Move past the register number and inner group count. */ | |
| 4655 p += 2; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4656 just_past_start_mem = p; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4657 |
| 941 | 4658 break; |
| 4659 | |
| 4660 | |
| 4661 /* The stop_memory opcode represents the end of a group. Its | |
| 4662 arguments are the same as start_memory's: the register | |
| 4663 number, and the number of inner groups. */ | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4664 case stop_memory: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4665 DEBUG_PRINT3 ("EXECUTING stop_memory %d (%d):\n", *p, p[1]); |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4666 |
| 941 | 4667 /* We need to save the string position the last time we were at |
| 4668 this close-group operator in case the group is operated | |
| 4669 upon by a repetition operator, e.g., with `((a*)*(b*)*)*' | |
| 4670 against `aba'; then we want to ignore where we are now in | |
| 4671 the string in case this attempt to match fails. */ | |
| 4672 old_regend[*p] = REG_MATCH_NULL_STRING_P (reg_info[*p]) | |
| 4673 ? REG_UNSET (regend[*p]) ? d : regend[*p] | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4674 : regend[*p]; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4675 DEBUG_PRINT2 (" old_regend: %d\n", |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4676 POINTER_TO_OFFSET (old_regend[*p])); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4677 |
| 941 | 4678 regend[*p] = d; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4679 DEBUG_PRINT2 (" regend: %d\n", POINTER_TO_OFFSET (regend[*p])); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4680 |
| 941 | 4681 /* This register isn't active anymore. */ |
| 4682 IS_ACTIVE (reg_info[*p]) = 0; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4683 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4684 /* Clear this whenever we change the register activity status. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4685 set_regs_matched_done = 0; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4686 |
| 941 | 4687 /* If this was the only register active, nothing is active |
| 4688 anymore. */ | |
| 4689 if (lowest_active_reg == highest_active_reg) | |
| 4690 { | |
| 4691 lowest_active_reg = NO_LOWEST_ACTIVE_REG; | |
| 4692 highest_active_reg = NO_HIGHEST_ACTIVE_REG; | |
| 4693 } | |
| 4694 else | |
| 4695 { /* We must scan for the new highest active register, since | |
| 4696 it isn't necessarily one less than now: consider | |
| 4697 (a(b)c(d(e)f)g). When group 3 ends, after the f), the | |
| 4698 new highest active register is 1. */ | |
| 4699 unsigned char r = *p - 1; | |
| 4700 while (r > 0 && !IS_ACTIVE (reg_info[r])) | |
| 4701 r--; | |
| 4702 | |
| 4703 /* If we end up at register zero, that means that we saved | |
| 4704 the registers as the result of an `on_failure_jump', not | |
| 4705 a `start_memory', and we jumped to past the innermost | |
| 4706 `stop_memory'. For example, in ((.)*) we save | |
| 4707 registers 1 and 2 as a result of the *, but when we pop | |
| 4708 back to the second ), we are at the stop_memory 1. | |
| 4709 Thus, nothing is active. */ | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4710 if (r == 0) |
| 941 | 4711 { |
| 4712 lowest_active_reg = NO_LOWEST_ACTIVE_REG; | |
| 4713 highest_active_reg = NO_HIGHEST_ACTIVE_REG; | |
| 4714 } | |
| 4715 else | |
| 4716 highest_active_reg = r; | |
| 4717 } | |
| 4718 | |
| 4719 /* If just failed to match something this time around with a | |
| 4720 group that's operated on by a repetition operator, try to | |
| 4721 force exit from the ``loop'', and restore the register | |
| 4722 information for this group that we had before trying this | |
| 4723 last match. */ | |
| 4724 if ((!MATCHED_SOMETHING (reg_info[*p]) | |
| 4725 || just_past_start_mem == p - 1) | |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4726 && (p + 2) < pend) |
| 941 | 4727 { |
| 4728 boolean is_a_jump_n = false; | |
| 4729 | |
| 4730 p1 = p + 2; | |
| 4731 mcnt = 0; | |
| 4732 switch ((re_opcode_t) *p1++) | |
| 4733 { | |
| 4734 case jump_n: | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4735 is_a_jump_n = true; |
| 941 | 4736 case pop_failure_jump: |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4737 case maybe_pop_jump: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4738 case jump: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4739 case dummy_failure_jump: |
| 941 | 4740 EXTRACT_NUMBER_AND_INCR (mcnt, p1); |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4741 if (is_a_jump_n) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4742 p1 += 2; |
| 941 | 4743 break; |
| 4744 | |
| 4745 default: | |
| 4746 /* do nothing */ ; | |
| 4747 } | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4748 p1 += mcnt; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4749 |
| 941 | 4750 /* If the next operation is a jump backwards in the pattern |
| 4751 to an on_failure_jump right before the start_memory | |
| 4752 corresponding to this stop_memory, exit from the loop | |
| 4753 by forcing a failure after pushing on the stack the | |
| 4754 on_failure_jump's jump in the pattern, and d. */ | |
| 4755 if (mcnt < 0 && (re_opcode_t) *p1 == on_failure_jump | |
| 4756 && (re_opcode_t) p1[3] == start_memory && p1[4] == *p) | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4757 { |
| 941 | 4758 /* If this group ever matched anything, then restore |
| 4759 what its registers were before trying this last | |
| 4760 failed match, e.g., with `(a*)*b' against `ab' for | |
| 4761 regstart[1], and, e.g., with `((a*)*(b*)*)*' | |
| 4762 against `aba' for regend[3]. | |
| 4763 | |
| 4764 Also restore the registers for inner groups for, | |
| 4765 e.g., `((a*)(b*))*' against `aba' (register 3 would | |
| 4766 otherwise get trashed). */ | |
| 4767 | |
| 4768 if (EVER_MATCHED_SOMETHING (reg_info[*p])) | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4769 { |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4770 unsigned r; |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4771 |
| 941 | 4772 EVER_MATCHED_SOMETHING (reg_info[*p]) = 0; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4773 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4774 /* Restore this and inner groups' (if any) registers. */ |
| 941 | 4775 for (r = *p; r < *p + *(p + 1); r++) |
| 4776 { | |
| 4777 regstart[r] = old_regstart[r]; | |
| 4778 | |
| 4779 /* xx why this test? */ | |
| 4780 if (old_regend[r] >= regstart[r]) | |
| 4781 regend[r] = old_regend[r]; | |
| 4782 } | |
| 4783 } | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4784 p1++; |
| 941 | 4785 EXTRACT_NUMBER_AND_INCR (mcnt, p1); |
| 4786 PUSH_FAILURE_POINT (p1 + mcnt, d, -2); | |
| 4787 | |
| 4788 goto fail; | |
| 4789 } | |
| 4790 } | |
| 4791 | |
| 4792 /* Move past the register number and the inner group count. */ | |
| 4793 p += 2; | |
| 4794 break; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4795 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4796 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4797 /* \<digit> has been turned into a `duplicate' command which is |
| 941 | 4798 followed by the numeric value of <digit> as the register number. */ |
| 4799 case duplicate: | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4800 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4801 register const char *d2, *dend2; |
| 941 | 4802 int regno = *p++; /* Get which register to match against. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4803 DEBUG_PRINT2 ("EXECUTING duplicate %d.\n", regno); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4804 |
| 941 | 4805 /* Can't back reference a group which we've never matched. */ |
| 4806 if (REG_UNSET (regstart[regno]) || REG_UNSET (regend[regno])) | |
| 4807 goto fail; | |
| 4808 | |
| 4809 /* Where in input to try to start matching. */ | |
| 4810 d2 = regstart[regno]; | |
| 4811 | |
| 4812 /* Where to stop matching; if both the place to start and | |
| 4813 the place to stop matching are in the same string, then | |
| 4814 set to the place to stop, otherwise, for now have to use | |
| 4815 the end of the first string. */ | |
| 4816 | |
| 4817 dend2 = ((FIRST_STRING_P (regstart[regno]) | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4818 == FIRST_STRING_P (regend[regno])) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4819 ? regend[regno] : end_match_1); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4820 for (;;) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4821 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4822 /* If necessary, advance to next segment in register |
| 941 | 4823 contents. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4824 while (d2 == dend2) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4825 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4826 if (dend2 == end_match_2) break; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4827 if (dend2 == regend[regno]) break; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4828 |
| 941 | 4829 /* End of string1 => advance to string2. */ |
| 4830 d2 = string2; | |
| 4831 dend2 = regend[regno]; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4832 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4833 /* At end of register contents => success */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4834 if (d2 == dend2) break; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4835 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4836 /* If necessary, advance to next segment in data. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4837 PREFETCH (); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4838 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4839 /* How many characters left in this segment to match. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4840 mcnt = dend - d; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4841 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4842 /* Want how many consecutive characters we can match in |
| 941 | 4843 one shot, so, if necessary, adjust the count. */ |
| 4844 if (mcnt > dend2 - d2) | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4845 mcnt = dend2 - d2; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4846 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4847 /* Compare that many; failure if mismatch, else move |
| 941 | 4848 past them. */ |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4849 if (translate |
| 941 | 4850 ? bcmp_translate (d, d2, mcnt, translate) |
| 4851 : bcmp (d, d2, mcnt)) | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4852 goto fail; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4853 d += mcnt, d2 += mcnt; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4854 |
| 941 | 4855 /* Do this because we've match some characters. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4856 SET_REGS_MATCHED (); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4857 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4858 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4859 break; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4860 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4861 |
| 941 | 4862 /* begline matches the empty string at the beginning of the string |
| 4863 (unless `not_bol' is set in `bufp'), and, if | |
| 4864 `newline_anchor' is set, after newlines. */ | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4865 case begline: |
| 941 | 4866 DEBUG_PRINT1 ("EXECUTING begline.\n"); |
| 4867 | |
| 4868 if (AT_STRINGS_BEG (d)) | |
| 4869 { | |
| 4870 if (!bufp->not_bol) break; | |
| 4871 } | |
| 4872 else if (d[-1] == '\n' && bufp->newline_anchor) | |
| 4873 { | |
| 4874 break; | |
| 4875 } | |
| 4876 /* In all other cases, we fail. */ | |
| 4877 goto fail; | |
| 4878 | |
| 4879 | |
| 4880 /* endline is the dual of begline. */ | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4881 case endline: |
| 941 | 4882 DEBUG_PRINT1 ("EXECUTING endline.\n"); |
| 4883 | |
| 4884 if (AT_STRINGS_END (d)) | |
| 4885 { | |
| 4886 if (!bufp->not_eol) break; | |
| 4887 } | |
| 4888 | |
| 4889 /* We have to ``prefetch'' the next character. */ | |
| 4890 else if ((d == end1 ? *string2 : *d) == '\n' | |
| 4891 && bufp->newline_anchor) | |
| 4892 { | |
| 4893 break; | |
| 4894 } | |
| 4895 goto fail; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4896 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4897 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4898 /* Match at the very beginning of the data. */ |
| 941 | 4899 case begbuf: |
| 4900 DEBUG_PRINT1 ("EXECUTING begbuf.\n"); | |
| 4901 if (AT_STRINGS_BEG (d)) | |
| 4902 break; | |
| 4903 goto fail; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4904 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4905 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4906 /* Match at the very end of the data. */ |
| 941 | 4907 case endbuf: |
| 4908 DEBUG_PRINT1 ("EXECUTING endbuf.\n"); | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4909 if (AT_STRINGS_END (d)) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4910 break; |
| 941 | 4911 goto fail; |
| 4912 | |
| 4913 | |
| 4914 /* on_failure_keep_string_jump is used to optimize `.*\n'. It | |
| 4915 pushes NULL as the value for the string on the stack. Then | |
| 4916 `pop_failure_point' will keep the current value for the | |
| 4917 string, instead of restoring it. To see why, consider | |
| 4918 matching `foo\nbar' against `.*\n'. The .* matches the foo; | |
| 4919 then the . fails against the \n. But the next thing we want | |
| 4920 to do is match the \n against the \n; if we restored the | |
| 4921 string value, we would be back at the foo. | |
| 4922 | |
| 4923 Because this is used only in specific cases, we don't need to | |
| 4924 check all the things that `on_failure_jump' does, to make | |
| 4925 sure the right things get saved on the stack. Hence we don't | |
| 4926 share its code. The only reason to push anything on the | |
| 4927 stack at all is that otherwise we would have to change | |
| 4928 `anychar's code to do something besides goto fail in this | |
| 4929 case; that seems worse than this. */ | |
| 4930 case on_failure_keep_string_jump: | |
| 4931 DEBUG_PRINT1 ("EXECUTING on_failure_keep_string_jump"); | |
| 4932 | |
| 4933 EXTRACT_NUMBER_AND_INCR (mcnt, p); | |
| 4934 DEBUG_PRINT3 (" %d (to 0x%x):\n", mcnt, p + mcnt); | |
| 4935 | |
| 4936 PUSH_FAILURE_POINT (p + mcnt, NULL, -2); | |
| 4937 break; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4938 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4939 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4940 /* Uses of on_failure_jump: |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
4941 |
| 941 | 4942 Each alternative starts with an on_failure_jump that points |
| 4943 to the beginning of the next alternative. Each alternative | |
| 4944 except the last ends with a jump that in effect jumps past | |
| 4945 the rest of the alternatives. (They really jump to the | |
| 4946 ending jump of the following alternative, because tensioning | |
| 4947 these jumps is a hassle.) | |
| 4948 | |
| 4949 Repeats start with an on_failure_jump that points past both | |
| 4950 the repetition text and either the following jump or | |
| 4951 pop_failure_jump back to this on_failure_jump. */ | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4952 case on_failure_jump: |
| 941 | 4953 on_failure: |
| 4954 DEBUG_PRINT1 ("EXECUTING on_failure_jump"); | |
| 4955 | |
| 4956 EXTRACT_NUMBER_AND_INCR (mcnt, p); | |
| 4957 DEBUG_PRINT3 (" %d (to 0x%x)", mcnt, p + mcnt); | |
| 4958 | |
| 4959 /* If this on_failure_jump comes right before a group (i.e., | |
| 4960 the original * applied to a group), save the information | |
| 4961 for that group and all inner ones, so that if we fail back | |
| 4962 to this point, the group's information will be correct. | |
| 4963 For example, in \(a*\)*\1, we need the preceding group, | |
| 4964 and in \(zz\(a*\)b*\)\2, we need the inner group. */ | |
| 4965 | |
| 4966 /* We can't use `p' to check ahead because we push | |
| 4967 a failure point to `p + mcnt' after we do this. */ | |
| 4968 p1 = p; | |
| 4969 | |
| 4970 /* We need to skip no_op's before we look for the | |
| 4971 start_memory in case this on_failure_jump is happening as | |
| 4972 the result of a completed succeed_n, as in \(a\)\{1,3\}b\1 | |
| 4973 against aba. */ | |
| 4974 while (p1 < pend && (re_opcode_t) *p1 == no_op) | |
| 4975 p1++; | |
| 4976 | |
| 4977 if (p1 < pend && (re_opcode_t) *p1 == start_memory) | |
| 4978 { | |
| 4979 /* We have a new highest active register now. This will | |
| 4980 get reset at the start_memory we are about to get to, | |
| 4981 but we will have saved all the registers relevant to | |
| 4982 this repetition op, as described above. */ | |
| 4983 highest_active_reg = *(p1 + 1) + *(p1 + 2); | |
| 4984 if (lowest_active_reg == NO_LOWEST_ACTIVE_REG) | |
| 4985 lowest_active_reg = *(p1 + 1); | |
| 4986 } | |
| 4987 | |
| 4988 DEBUG_PRINT1 (":\n"); | |
| 4989 PUSH_FAILURE_POINT (p + mcnt, d, -2); | |
| 4990 break; | |
| 4991 | |
| 4992 | |
| 4993 /* A smart repeat ends with `maybe_pop_jump'. | |
| 4994 We change it to either `pop_failure_jump' or `jump'. */ | |
| 4995 case maybe_pop_jump: | |
| 4996 EXTRACT_NUMBER_AND_INCR (mcnt, p); | |
| 4997 DEBUG_PRINT2 ("EXECUTING maybe_pop_jump %d.\n", mcnt); | |
| 4998 { | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
4999 register unsigned char *p2 = p; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5000 |
| 941 | 5001 /* Compare the beginning of the repeat with what in the |
| 5002 pattern follows its end. If we can establish that there | |
| 5003 is nothing that they would both match, i.e., that we | |
| 5004 would have to backtrack because of (as in, e.g., `a*a') | |
| 5005 then we can change to pop_failure_jump, because we'll | |
| 5006 never have to backtrack. | |
| 5007 | |
| 5008 This is not true in the case of alternatives: in | |
| 5009 `(a|ab)*' we do need to backtrack to the `ab' alternative | |
| 5010 (e.g., if the string was `ab'). But instead of trying to | |
| 5011 detect that here, the alternative has put on a dummy | |
| 5012 failure point which is what we will end up popping. */ | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5013 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5014 /* Skip over open/close-group commands. |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5015 If what follows this loop is a ...+ construct, |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5016 look at what begins its body, since we will have to |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5017 match at least one of that. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5018 while (1) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5019 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5020 if (p2 + 2 < pend |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5021 && ((re_opcode_t) *p2 == stop_memory |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5022 || (re_opcode_t) *p2 == start_memory)) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5023 p2 += 3; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5024 else if (p2 + 6 < pend |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5025 && (re_opcode_t) *p2 == dummy_failure_jump) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5026 p2 += 6; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5027 else |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5028 break; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5029 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5030 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5031 p1 = p + mcnt; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5032 /* p1[0] ... p1[2] are the `on_failure_jump' corresponding |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5033 to the `maybe_finalize_jump' of this case. Examine what |
| 941 | 5034 follows. */ |
| 5035 | |
| 5036 /* If we're at the end of the pattern, we can change. */ | |
| 5037 if (p2 == pend) | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5038 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5039 /* Consider what happens when matching ":\(.*\)" |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5040 against ":/". I don't really understand this code |
| 941 | 5041 yet. */ |
| 5042 p[-3] = (unsigned char) pop_failure_jump; | |
| 5043 DEBUG_PRINT1 | |
| 5044 (" End of pattern: change to `pop_failure_jump'.\n"); | |
| 5045 } | |
| 5046 | |
| 5047 else if ((re_opcode_t) *p2 == exactn | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5048 || (bufp->newline_anchor && (re_opcode_t) *p2 == endline)) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5049 { |
| 939 | 5050 register unsigned int c |
| 941 | 5051 = *p2 == (unsigned char) endline ? '\n' : p2[2]; |
| 939 | 5052 |
| 5053 if ((re_opcode_t) p1[3] == exactn) | |
| 679 | 5054 { |
| 939 | 5055 if (!(multibyte /* && (c != '\n') */ |
| 5056 && BASE_LEADING_CODE_P (c)) | |
| 5057 ? c != p1[5] | |
| 5058 : (STRING_CHAR (&p2[2], pend - &p2[2]) | |
| 5059 != STRING_CHAR (&p1[5], pend - &p1[5]))) | |
| 941 | 5060 { |
| 5061 p[-3] = (unsigned char) pop_failure_jump; | |
| 5062 DEBUG_PRINT3 (" %c != %c => pop_failure_jump.\n", | |
| 5063 c, p1[5]); | |
| 5064 } | |
| 679 | 5065 } |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5066 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5067 else if ((re_opcode_t) p1[3] == charset |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5068 || (re_opcode_t) p1[3] == charset_not) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5069 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5070 int not = (re_opcode_t) p1[3] == charset_not; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5071 |
| 939 | 5072 if (multibyte /* && (c != '\n') */ |
| 5073 && BASE_LEADING_CODE_P (c)) | |
| 5074 c = STRING_CHAR (&p2[2], pend - &p2[2]); | |
| 5075 | |
| 5076 /* Test if C is listed in charset (or charset_not) | |
| 5077 at `&p1[3]'. */ | |
| 5078 if (SINGLE_BYTE_CHAR_P (c)) | |
| 5079 { | |
| 5080 if (c < CHARSET_BITMAP_SIZE (&p1[3]) * BYTEWIDTH | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5081 && p1[5 + c / BYTEWIDTH] & (1 << (c % BYTEWIDTH))) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5082 not = !not; |
| 939 | 5083 } |
| 5084 else if (CHARSET_RANGE_TABLE_EXISTS_P (&p1[3])) | |
| 5085 CHARSET_LOOKUP_RANGE_TABLE (not, c, &p1[3]); | |
| 5086 | |
| 941 | 5087 /* `not' is equal to 1 if c would match, which means |
| 5088 that we can't change to pop_failure_jump. */ | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5089 if (!not) |
| 941 | 5090 { |
| 5091 p[-3] = (unsigned char) pop_failure_jump; | |
| 5092 DEBUG_PRINT1 (" No match => pop_failure_jump.\n"); | |
| 5093 } | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5094 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5095 } |
| 941 | 5096 else if ((re_opcode_t) *p2 == charset) |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5097 { |
| 939 | 5098 if ((re_opcode_t) p1[3] == exactn) |
| 679 | 5099 { |
| 939 | 5100 register unsigned int c = p1[5]; |
| 5101 int not = 0; | |
| 5102 | |
| 5103 if (multibyte && BASE_LEADING_CODE_P (c)) | |
| 5104 c = STRING_CHAR (&p1[5], pend - &p1[5]); | |
| 5105 | |
| 941 | 5106 /* Test if C is listed in charset at `p2'. */ |
| 939 | 5107 if (SINGLE_BYTE_CHAR_P (c)) |
| 5108 { | |
| 5109 if (c < CHARSET_BITMAP_SIZE (p2) * BYTEWIDTH | |
| 5110 && (p2[2 + c / BYTEWIDTH] | |
| 5111 & (1 << (c % BYTEWIDTH)))) | |
| 5112 not = !not; | |
| 5113 } | |
| 5114 else if (CHARSET_RANGE_TABLE_EXISTS_P (p2)) | |
| 5115 CHARSET_LOOKUP_RANGE_TABLE (not, c, p2); | |
| 5116 | |
| 5117 if (!not) | |
| 941 | 5118 { |
| 5119 p[-3] = (unsigned char) pop_failure_jump; | |
| 5120 DEBUG_PRINT1 (" No match => pop_failure_jump.\n"); | |
| 939 | 5121 } |
| 941 | 5122 } |
| 939 | 5123 |
| 5124 /* It is hard to list up all the character in charset | |
| 5125 P2 if it includes multibyte character. Give up in | |
| 5126 such case. */ | |
| 5127 else if (!multibyte || !CHARSET_RANGE_TABLE_EXISTS_P (p2)) | |
| 5128 { | |
| 5129 /* Now, we are sure that P2 has no range table. | |
| 5130 So, for the size of bitmap in P2, `p2[1]' is | |
| 941 | 5131 enough. But P1 may have range table, so the |
| 939 | 5132 size of bitmap table of P1 is extracted by |
| 5133 using macro `CHARSET_BITMAP_SIZE'. | |
| 5134 | |
| 5135 Since we know that all the character listed in | |
| 5136 P2 is ASCII, it is enough to test only bitmap | |
| 5137 table of P1. */ | |
| 941 | 5138 |
| 939 | 5139 if ((re_opcode_t) p1[3] == charset_not) |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5140 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5141 int idx; |
| 939 | 5142 /* We win if the charset_not inside the loop lists |
| 941 | 5143 every character listed in the charset after. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5144 for (idx = 0; idx < (int) p2[1]; idx++) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5145 if (! (p2[2 + idx] == 0 |
| 939 | 5146 || (idx < CHARSET_BITMAP_SIZE (&p1[3]) |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5147 && ((p2[2 + idx] & ~ p1[5 + idx]) == 0)))) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5148 break; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5149 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5150 if (idx == p2[1]) |
| 941 | 5151 { |
| 5152 p[-3] = (unsigned char) pop_failure_jump; | |
| 5153 DEBUG_PRINT1 (" No match => pop_failure_jump.\n"); | |
| 5154 } | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5155 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5156 else if ((re_opcode_t) p1[3] == charset) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5157 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5158 int idx; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5159 /* We win if the charset inside the loop |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5160 has no overlap with the one after the loop. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5161 for (idx = 0; |
| 939 | 5162 (idx < (int) p2[1] |
| 5163 && idx < CHARSET_BITMAP_SIZE (&p1[3])); | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5164 idx++) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5165 if ((p2[2 + idx] & p1[5 + idx]) != 0) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5166 break; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5167 |
| 939 | 5168 if (idx == p2[1] |
| 5169 || idx == CHARSET_BITMAP_SIZE (&p1[3])) | |
| 941 | 5170 { |
| 5171 p[-3] = (unsigned char) pop_failure_jump; | |
| 5172 DEBUG_PRINT1 (" No match => pop_failure_jump.\n"); | |
| 5173 } | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5174 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5175 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5176 } |
| 939 | 5177 } |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5178 p -= 2; /* Point at relative address again. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5179 if ((re_opcode_t) p[-1] != pop_failure_jump) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5180 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5181 p[-1] = (unsigned char) jump; |
| 941 | 5182 DEBUG_PRINT1 (" Match => jump.\n"); |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5183 goto unconditional_jump; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5184 } |
| 941 | 5185 /* Note fall through. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5186 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5187 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5188 /* The end of a simple repeat has a pop_failure_jump back to |
| 941 | 5189 its matching on_failure_jump, where the latter will push a |
| 5190 failure point. The pop_failure_jump takes off failure | |
| 5191 points put on by this pop_failure_jump's matching | |
| 5192 on_failure_jump; we got through the pattern to here from the | |
| 5193 matching on_failure_jump, so didn't fail. */ | |
| 5194 case pop_failure_jump: | |
| 5195 { | |
| 5196 /* We need to pass separate storage for the lowest and | |
| 5197 highest registers, even though we don't care about the | |
| 5198 actual values. Otherwise, we will restore only one | |
| 5199 register from the stack, since lowest will == highest in | |
| 5200 `pop_failure_point'. */ | |
| 5201 unsigned dummy_low_reg, dummy_high_reg; | |
| 5202 unsigned char *pdummy; | |
| 5203 const char *sdummy; | |
| 5204 | |
| 5205 DEBUG_PRINT1 ("EXECUTING pop_failure_jump.\n"); | |
| 5206 POP_FAILURE_POINT (sdummy, pdummy, | |
| 5207 dummy_low_reg, dummy_high_reg, | |
| 5208 reg_dummy, reg_dummy, reg_info_dummy); | |
| 5209 } | |
| 5210 /* Note fall through. */ | |
| 5211 | |
| 5212 | |
| 5213 /* Unconditionally jump (without popping any failure points). */ | |
| 5214 case jump: | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5215 unconditional_jump: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5216 EXTRACT_NUMBER_AND_INCR (mcnt, p); /* Get the amount to jump. */ |
| 941 | 5217 DEBUG_PRINT2 ("EXECUTING jump %d ", mcnt); |
| 5218 p += mcnt; /* Do the jump. */ | |
| 5219 DEBUG_PRINT2 ("(to 0x%x).\n", p); | |
| 5220 break; | |
| 5221 | |
| 5222 | |
| 5223 /* We need this opcode so we can detect where alternatives end | |
| 5224 in `group_match_null_string_p' et al. */ | |
| 5225 case jump_past_alt: | |
| 5226 DEBUG_PRINT1 ("EXECUTING jump_past_alt.\n"); | |
| 5227 goto unconditional_jump; | |
| 5228 | |
| 5229 | |
| 5230 /* Normally, the on_failure_jump pushes a failure point, which | |
| 5231 then gets popped at pop_failure_jump. We will end up at | |
| 5232 pop_failure_jump, also, and with a pattern of, say, `a+', we | |
| 5233 are skipping over the on_failure_jump, so we have to push | |
| 5234 something meaningless for pop_failure_jump to pop. */ | |
| 5235 case dummy_failure_jump: | |
| 5236 DEBUG_PRINT1 ("EXECUTING dummy_failure_jump.\n"); | |
| 5237 /* It doesn't matter what we push for the string here. What | |
| 5238 the code at `fail' tests is the value for the pattern. */ | |
| 5239 PUSH_FAILURE_POINT (0, 0, -2); | |
| 5240 goto unconditional_jump; | |
| 5241 | |
| 5242 | |
| 5243 /* At the end of an alternative, we need to push a dummy failure | |
| 5244 point in case we are followed by a `pop_failure_jump', because | |
| 5245 we don't want the failure point for the alternative to be | |
| 5246 popped. For example, matching `(a|ab)*' against `aab' | |
| 5247 requires that we match the `ab' alternative. */ | |
| 5248 case push_dummy_failure: | |
| 5249 DEBUG_PRINT1 ("EXECUTING push_dummy_failure.\n"); | |
| 5250 /* See comments just above at `dummy_failure_jump' about the | |
| 5251 two zeroes. */ | |
| 5252 PUSH_FAILURE_POINT (0, 0, -2); | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5253 break; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5254 |
| 941 | 5255 /* Have to succeed matching what follows at least n times. |
| 5256 After that, handle like `on_failure_jump'. */ | |
| 5257 case succeed_n: | |
| 5258 EXTRACT_NUMBER (mcnt, p + 2); | |
| 5259 DEBUG_PRINT2 ("EXECUTING succeed_n %d.\n", mcnt); | |
| 5260 | |
| 5261 assert (mcnt >= 0); | |
| 5262 /* Originally, this is how many times we HAVE to succeed. */ | |
| 5263 if (mcnt > 0) | |
| 5264 { | |
| 5265 mcnt--; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5266 p += 2; |
| 941 | 5267 STORE_NUMBER_AND_INCR (p, mcnt); |
| 5268 DEBUG_PRINT3 (" Setting 0x%x to %d.\n", p, mcnt); | |
| 5269 } | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5270 else if (mcnt == 0) |
| 941 | 5271 { |
| 5272 DEBUG_PRINT2 (" Setting two bytes from 0x%x to no_op.\n", p+2); | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5273 p[2] = (unsigned char) no_op; |
| 941 | 5274 p[3] = (unsigned char) no_op; |
| 5275 goto on_failure; | |
| 5276 } | |
| 5277 break; | |
| 5278 | |
| 5279 case jump_n: | |
| 5280 EXTRACT_NUMBER (mcnt, p + 2); | |
| 5281 DEBUG_PRINT2 ("EXECUTING jump_n %d.\n", mcnt); | |
| 5282 | |
| 5283 /* Originally, this is how many times we CAN jump. */ | |
| 5284 if (mcnt) | |
| 5285 { | |
| 5286 mcnt--; | |
| 5287 STORE_NUMBER (p + 2, mcnt); | |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5288 goto unconditional_jump; |
| 941 | 5289 } |
| 5290 /* If don't have to jump any more, skip over the rest of command. */ | |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5291 else |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5292 p += 4; |
| 941 | 5293 break; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5294 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5295 case set_number_at: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5296 { |
| 941 | 5297 DEBUG_PRINT1 ("EXECUTING set_number_at.\n"); |
| 5298 | |
| 5299 EXTRACT_NUMBER_AND_INCR (mcnt, p); | |
| 5300 p1 = p + mcnt; | |
| 5301 EXTRACT_NUMBER_AND_INCR (mcnt, p); | |
| 5302 DEBUG_PRINT3 (" Setting 0x%x to %d.\n", p1, mcnt); | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5303 STORE_NUMBER (p1, mcnt); |
| 941 | 5304 break; |
| 5305 } | |
|
521
7089c3a3a164
(AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents:
515
diff
changeset
|
5306 |
|
7089c3a3a164
(AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents:
515
diff
changeset
|
5307 case wordbound: |
|
7089c3a3a164
(AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents:
515
diff
changeset
|
5308 DEBUG_PRINT1 ("EXECUTING wordbound.\n"); |
| 939 | 5309 |
| 5310 /* We SUCCEED in one of the following cases: */ | |
| 5311 | |
| 5312 /* Case 1: D is at the beginning or the end of string. */ | |
|
521
7089c3a3a164
(AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents:
515
diff
changeset
|
5313 if (AT_STRINGS_BEG (d) || AT_STRINGS_END (d)) |
|
7089c3a3a164
(AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents:
515
diff
changeset
|
5314 break; |
| 939 | 5315 else |
| 5316 { | |
| 5317 /* C1 is the character before D, S1 is the syntax of C1, C2 | |
| 5318 is the character at D, and S2 is the syntax of C2. */ | |
| 5319 int c1, c2, s1, s2; | |
| 5320 int pos1 = PTR_TO_OFFSET (d - 1); | |
| 5321 | |
| 5322 GET_CHAR_BEFORE_2 (c1, d, string1, end1, string2, end2); | |
| 5323 GET_CHAR_AFTER_2 (c2, d, string1, end1, string2, end2); | |
| 5324 #ifdef emacs | |
| 5325 UPDATE_SYNTAX_TABLE (pos1 ? pos1 : 1); | |
| 941 | 5326 #endif |
| 939 | 5327 s1 = SYNTAX (c1); |
| 5328 #ifdef emacs | |
| 5329 UPDATE_SYNTAX_TABLE_FORWARD (pos1 + 1); | |
| 941 | 5330 #endif |
| 939 | 5331 s2 = SYNTAX (c2); |
| 5332 | |
| 5333 if (/* Case 2: Only one of S1 and S2 is Sword. */ | |
| 5334 ((s1 == Sword) != (s2 == Sword)) | |
| 5335 /* Case 3: Both of S1 and S2 are Sword, and macro | |
| 941 | 5336 WORD_BOUNDARY_P (C1, C2) returns nonzero. */ |
| 939 | 5337 || ((s1 == Sword) && WORD_BOUNDARY_P (c1, c2))) |
|
521
7089c3a3a164
(AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents:
515
diff
changeset
|
5338 break; |
| 939 | 5339 } |
|
521
7089c3a3a164
(AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents:
515
diff
changeset
|
5340 goto fail; |
|
7089c3a3a164
(AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents:
515
diff
changeset
|
5341 |
|
7089c3a3a164
(AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents:
515
diff
changeset
|
5342 case notwordbound: |
|
7089c3a3a164
(AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents:
515
diff
changeset
|
5343 DEBUG_PRINT1 ("EXECUTING notwordbound.\n"); |
| 939 | 5344 |
| 5345 /* We FAIL in one of the following cases: */ | |
| 5346 | |
| 5347 /* Case 1: D is at the beginning or the end of string. */ | |
|
521
7089c3a3a164
(AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents:
515
diff
changeset
|
5348 if (AT_STRINGS_BEG (d) || AT_STRINGS_END (d)) |
|
7089c3a3a164
(AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents:
515
diff
changeset
|
5349 goto fail; |
| 939 | 5350 else |
| 5351 { | |
| 5352 /* C1 is the character before D, S1 is the syntax of C1, C2 | |
| 5353 is the character at D, and S2 is the syntax of C2. */ | |
| 5354 int c1, c2, s1, s2; | |
| 5355 int pos1 = PTR_TO_OFFSET (d - 1); | |
| 5356 | |
| 5357 GET_CHAR_BEFORE_2 (c1, d, string1, end1, string2, end2); | |
| 5358 GET_CHAR_AFTER_2 (c2, d, string1, end1, string2, end2); | |
| 5359 #ifdef emacs | |
| 5360 UPDATE_SYNTAX_TABLE (pos1); | |
| 941 | 5361 #endif |
| 939 | 5362 s1 = SYNTAX (c1); |
| 5363 #ifdef emacs | |
| 5364 UPDATE_SYNTAX_TABLE_FORWARD (pos1 + 1); | |
| 941 | 5365 #endif |
| 939 | 5366 s2 = SYNTAX (c2); |
| 5367 | |
| 5368 if (/* Case 2: Only one of S1 and S2 is Sword. */ | |
| 5369 ((s1 == Sword) != (s2 == Sword)) | |
| 5370 /* Case 3: Both of S1 and S2 are Sword, and macro | |
| 941 | 5371 WORD_BOUNDARY_P (C1, C2) returns nonzero. */ |
| 939 | 5372 || ((s1 == Sword) && WORD_BOUNDARY_P (c1, c2))) |
|
521
7089c3a3a164
(AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents:
515
diff
changeset
|
5373 goto fail; |
| 939 | 5374 } |
|
521
7089c3a3a164
(AT_WORD_BOUNDARY): Disable macro.
Karl Heuer <kwzh@gnu.org>
parents:
515
diff
changeset
|
5375 break; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5376 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5377 case wordbeg: |
| 941 | 5378 DEBUG_PRINT1 ("EXECUTING wordbeg.\n"); |
| 939 | 5379 |
| 5380 /* We FAIL in one of the following cases: */ | |
| 5381 | |
| 941 | 5382 /* Case 1: D is at the end of string. */ |
| 939 | 5383 if (AT_STRINGS_END (d)) |
| 941 | 5384 goto fail; |
| 939 | 5385 else |
| 5386 { | |
| 5387 /* C1 is the character before D, S1 is the syntax of C1, C2 | |
| 5388 is the character at D, and S2 is the syntax of C2. */ | |
| 5389 int c1, c2, s1, s2; | |
| 5390 int pos1 = PTR_TO_OFFSET (d); | |
| 5391 | |
| 5392 GET_CHAR_AFTER_2 (c2, d, string1, end1, string2, end2); | |
| 5393 #ifdef emacs | |
| 5394 UPDATE_SYNTAX_TABLE (pos1); | |
| 941 | 5395 #endif |
| 939 | 5396 s2 = SYNTAX (c2); |
| 941 | 5397 |
| 939 | 5398 /* Case 2: S2 is not Sword. */ |
| 5399 if (s2 != Sword) | |
| 5400 goto fail; | |
| 5401 | |
| 5402 /* Case 3: D is not at the beginning of string ... */ | |
| 5403 if (!AT_STRINGS_BEG (d)) | |
| 5404 { | |
| 5405 GET_CHAR_BEFORE_2 (c1, d, string1, end1, string2, end2); | |
| 5406 #ifdef emacs | |
| 5407 UPDATE_SYNTAX_TABLE_BACKWARD (pos1 - 1); | |
| 941 | 5408 #endif |
| 939 | 5409 s1 = SYNTAX (c1); |
| 5410 | |
| 5411 /* ... and S1 is Sword, and WORD_BOUNDARY_P (C1, C2) | |
| 941 | 5412 returns 0. */ |
| 939 | 5413 if ((s1 == Sword) && !WORD_BOUNDARY_P (c1, c2)) |
| 5414 goto fail; | |
| 5415 } | |
| 5416 } | |
| 5417 break; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5418 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5419 case wordend: |
| 941 | 5420 DEBUG_PRINT1 ("EXECUTING wordend.\n"); |
| 939 | 5421 |
| 5422 /* We FAIL in one of the following cases: */ | |
| 5423 | |
| 5424 /* Case 1: D is at the beginning of string. */ | |
| 5425 if (AT_STRINGS_BEG (d)) | |
| 5426 goto fail; | |
| 5427 else | |
| 5428 { | |
| 5429 /* C1 is the character before D, S1 is the syntax of C1, C2 | |
| 5430 is the character at D, and S2 is the syntax of C2. */ | |
| 5431 int c1, c2, s1, s2; | |
| 5432 | |
| 5433 GET_CHAR_BEFORE_2 (c1, d, string1, end1, string2, end2); | |
| 5434 s1 = SYNTAX (c1); | |
| 5435 | |
| 5436 /* Case 2: S1 is not Sword. */ | |
| 5437 if (s1 != Sword) | |
| 5438 goto fail; | |
| 5439 | |
| 5440 /* Case 3: D is not at the end of string ... */ | |
| 5441 if (!AT_STRINGS_END (d)) | |
| 5442 { | |
| 5443 GET_CHAR_AFTER_2 (c2, d, string1, end1, string2, end2); | |
| 5444 s2 = SYNTAX (c2); | |
| 5445 | |
| 5446 /* ... and S2 is Sword, and WORD_BOUNDARY_P (C1, C2) | |
| 941 | 5447 returns 0. */ |
| 939 | 5448 if ((s2 == Sword) && !WORD_BOUNDARY_P (c1, c2)) |
| 941 | 5449 goto fail; |
| 939 | 5450 } |
| 5451 } | |
| 5452 break; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5453 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5454 #ifdef emacs |
| 941 | 5455 case before_dot: |
| 5456 DEBUG_PRINT1 ("EXECUTING before_dot.\n"); | |
|
680
d794d4ea2333
(re_match_2_internal) [emacs]: Use PT, not point.
Karl Heuer <kwzh@gnu.org>
parents:
679
diff
changeset
|
5457 if (PTR_CHAR_POS ((unsigned char *) d) >= PT) |
| 941 | 5458 goto fail; |
| 5459 break; | |
| 5460 | |
| 5461 case at_dot: | |
| 5462 DEBUG_PRINT1 ("EXECUTING at_dot.\n"); | |
|
680
d794d4ea2333
(re_match_2_internal) [emacs]: Use PT, not point.
Karl Heuer <kwzh@gnu.org>
parents:
679
diff
changeset
|
5463 if (PTR_CHAR_POS ((unsigned char *) d) != PT) |
| 941 | 5464 goto fail; |
| 5465 break; | |
| 5466 | |
| 5467 case after_dot: | |
| 5468 DEBUG_PRINT1 ("EXECUTING after_dot.\n"); | |
|
680
d794d4ea2333
(re_match_2_internal) [emacs]: Use PT, not point.
Karl Heuer <kwzh@gnu.org>
parents:
679
diff
changeset
|
5469 if (PTR_CHAR_POS ((unsigned char *) d) <= PT) |
| 941 | 5470 goto fail; |
| 5471 break; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5472 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5473 case syntaxspec: |
| 941 | 5474 DEBUG_PRINT2 ("EXECUTING syntaxspec %d.\n", mcnt); |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5475 mcnt = *p++; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5476 goto matchsyntax; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5477 |
| 941 | 5478 case wordchar: |
| 5479 DEBUG_PRINT1 ("EXECUTING Emacs wordchar.\n"); | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5480 mcnt = (int) Sword; |
| 941 | 5481 matchsyntax: |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5482 PREFETCH (); |
| 939 | 5483 #ifdef emacs |
| 5484 { | |
| 5485 int pos1 = PTR_TO_OFFSET (d); | |
| 5486 UPDATE_SYNTAX_TABLE (pos1); | |
| 5487 } | |
| 941 | 5488 #endif |
| 939 | 5489 { |
| 5490 int c, len; | |
| 5491 | |
| 5492 if (multibyte) | |
| 5493 /* we must concern about multibyte form, ... */ | |
| 5494 c = STRING_CHAR_AND_LENGTH (d, dend - d, len); | |
| 5495 else | |
| 5496 /* everything should be handled as ASCII, even though it | |
| 5497 looks like multibyte form. */ | |
| 5498 c = *d, len = 1; | |
| 5499 | |
| 5500 if (SYNTAX (c) != (enum syntaxcode) mcnt) | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5501 goto fail; |
| 939 | 5502 d += len; |
| 5503 } | |
| 941 | 5504 SET_REGS_MATCHED (); |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5505 break; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5506 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5507 case notsyntaxspec: |
| 941 | 5508 DEBUG_PRINT2 ("EXECUTING notsyntaxspec %d.\n", mcnt); |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5509 mcnt = *p++; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5510 goto matchnotsyntax; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5511 |
| 941 | 5512 case notwordchar: |
| 5513 DEBUG_PRINT1 ("EXECUTING Emacs notwordchar.\n"); | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5514 mcnt = (int) Sword; |
| 941 | 5515 matchnotsyntax: |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5516 PREFETCH (); |
| 939 | 5517 #ifdef emacs |
| 5518 { | |
| 5519 int pos1 = PTR_TO_OFFSET (d); | |
| 5520 UPDATE_SYNTAX_TABLE (pos1); | |
| 5521 } | |
| 941 | 5522 #endif |
| 939 | 5523 { |
| 5524 int c, len; | |
| 5525 | |
| 5526 if (multibyte) | |
| 5527 c = STRING_CHAR_AND_LENGTH (d, dend - d, len); | |
| 5528 else | |
| 5529 c = *d, len = 1; | |
| 5530 | |
| 5531 if (SYNTAX (c) == (enum syntaxcode) mcnt) | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5532 goto fail; |
| 939 | 5533 d += len; |
| 5534 } | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5535 SET_REGS_MATCHED (); |
| 679 | 5536 break; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5537 |
| 939 | 5538 case categoryspec: |
| 5539 DEBUG_PRINT2 ("EXECUTING categoryspec %d.\n", *p); | |
| 5540 mcnt = *p++; | |
| 5541 PREFETCH (); | |
| 5542 { | |
| 5543 int c, len; | |
| 5544 | |
| 5545 if (multibyte) | |
| 5546 c = STRING_CHAR_AND_LENGTH (d, dend - d, len); | |
| 5547 else | |
| 5548 c = *d, len = 1; | |
| 5549 | |
| 5550 if (!CHAR_HAS_CATEGORY (c, mcnt)) | |
| 5551 goto fail; | |
| 5552 d += len; | |
| 5553 } | |
| 5554 SET_REGS_MATCHED (); | |
| 5555 break; | |
| 5556 | |
| 5557 case notcategoryspec: | |
| 5558 DEBUG_PRINT2 ("EXECUTING notcategoryspec %d.\n", *p); | |
| 5559 mcnt = *p++; | |
| 5560 PREFETCH (); | |
| 5561 { | |
| 5562 int c, len; | |
| 5563 | |
| 5564 if (multibyte) | |
| 5565 c = STRING_CHAR_AND_LENGTH (d, dend - d, len); | |
| 5566 else | |
| 5567 c = *d, len = 1; | |
| 5568 | |
| 5569 if (CHAR_HAS_CATEGORY (c, mcnt)) | |
| 5570 goto fail; | |
| 5571 d += len; | |
| 5572 } | |
| 5573 SET_REGS_MATCHED (); | |
| 5574 break; | |
| 5575 | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5576 #else /* not emacs */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5577 case wordchar: |
| 939 | 5578 DEBUG_PRINT1 ("EXECUTING non-Emacs wordchar.\n"); |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5579 PREFETCH (); |
| 939 | 5580 if (!WORDCHAR_P (d)) |
| 5581 goto fail; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5582 SET_REGS_MATCHED (); |
| 939 | 5583 d++; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5584 break; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5585 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5586 case notwordchar: |
| 939 | 5587 DEBUG_PRINT1 ("EXECUTING non-Emacs notwordchar.\n"); |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5588 PREFETCH (); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5589 if (WORDCHAR_P (d)) |
| 939 | 5590 goto fail; |
| 5591 SET_REGS_MATCHED (); | |
| 5592 d++; | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5593 break; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5594 #endif /* not emacs */ |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5595 |
| 939 | 5596 default: |
| 5597 abort (); | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5598 } |
| 939 | 5599 continue; /* Successfully executed one pattern command; keep going. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5600 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5601 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5602 /* We goto here if a matching operation fails. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5603 fail: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5604 if (!FAIL_STACK_EMPTY ()) |
| 939 | 5605 { /* A restart point is known. Restore to that state. */ |
| 5606 DEBUG_PRINT1 ("\nFAIL:\n"); | |
| 5607 POP_FAILURE_POINT (d, p, | |
| 5608 lowest_active_reg, highest_active_reg, | |
| 5609 regstart, regend, reg_info); | |
| 5610 | |
| 5611 /* If this failure point is a dummy, try the next one. */ | |
| 5612 if (!p) | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5613 goto fail; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5614 |
| 939 | 5615 /* If we failed to the end of the pattern, don't examine *p. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5616 assert (p <= pend); |
| 939 | 5617 if (p < pend) |
| 5618 { | |
| 5619 boolean is_a_jump_n = false; | |
| 5620 | |
| 5621 /* If failed to a backwards jump that's part of a repetition | |
| 5622 loop, need to pop this failure point and use the next one. */ | |
| 5623 switch ((re_opcode_t) *p) | |
| 5624 { | |
| 5625 case jump_n: | |
| 5626 is_a_jump_n = true; | |
| 5627 case maybe_pop_jump: | |
| 5628 case pop_failure_jump: | |
| 5629 case jump: | |
| 5630 p1 = p + 1; | |
| 5631 EXTRACT_NUMBER_AND_INCR (mcnt, p1); | |
| 5632 p1 += mcnt; | |
| 5633 | |
| 5634 if ((is_a_jump_n && (re_opcode_t) *p1 == succeed_n) | |
| 5635 || (!is_a_jump_n | |
| 5636 && (re_opcode_t) *p1 == on_failure_jump)) | |
| 5637 goto fail; | |
| 5638 break; | |
| 5639 default: | |
| 5640 /* do nothing */ ; | |
| 5641 } | |
| 5642 } | |
| 5643 | |
| 5644 if (d >= string1 && d <= end1) | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5645 dend = end_match_1; |
| 939 | 5646 } |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5647 else |
| 939 | 5648 break; /* Matching at this starting point really fails. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5649 } /* for (;;) */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5650 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5651 if (best_regs_set) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5652 goto restore_best_regs; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5653 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5654 FREE_VARIABLES (); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5655 |
| 939 | 5656 return -1; /* Failure to match. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5657 } /* re_match_2 */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5658 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5659 /* Subroutine definitions for re_match_2. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5660 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5661 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5662 /* We are passed P pointing to a register number after a start_memory. |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5663 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5664 Return true if the pattern up to the corresponding stop_memory can |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5665 match the empty string, and false otherwise. |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5666 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5667 If we find the matching stop_memory, sets P to point to one past its number. |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5668 Otherwise, sets P to an undefined byte less than or equal to END. |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5669 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5670 We don't handle duplicates properly (yet). */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5671 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5672 static boolean |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5673 group_match_null_string_p (p, end, reg_info) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5674 unsigned char **p, *end; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5675 register_info_type *reg_info; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5676 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5677 int mcnt; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5678 /* Point to after the args to the start_memory. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5679 unsigned char *p1 = *p + 2; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5680 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5681 while (p1 < end) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5682 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5683 /* Skip over opcodes that can match nothing, and return true or |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5684 false, as appropriate, when we get to one that can't, or to the |
| 939 | 5685 matching stop_memory. */ |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5686 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5687 switch ((re_opcode_t) *p1) |
| 939 | 5688 { |
| 5689 /* Could be either a loop or a series of alternatives. */ | |
| 5690 case on_failure_jump: | |
| 5691 p1++; | |
| 5692 EXTRACT_NUMBER_AND_INCR (mcnt, p1); | |
| 5693 | |
| 5694 /* If the next operation is not a jump backwards in the | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5695 pattern. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5696 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5697 if (mcnt >= 0) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5698 { |
| 939 | 5699 /* Go through the on_failure_jumps of the alternatives, |
| 5700 seeing if any of the alternatives cannot match nothing. | |
| 5701 The last alternative starts with only a jump, | |
| 5702 whereas the rest start with on_failure_jump and end | |
| 5703 with a jump, e.g., here is the pattern for `a|b|c': | |
| 5704 | |
| 5705 /on_failure_jump/0/6/exactn/1/a/jump_past_alt/0/6 | |
| 5706 /on_failure_jump/0/6/exactn/1/b/jump_past_alt/0/3 | |
| 5707 /exactn/1/c | |
| 5708 | |
| 5709 So, we have to first go through the first (n-1) | |
| 5710 alternatives and then deal with the last one separately. */ | |
| 5711 | |
| 5712 | |
| 5713 /* Deal with the first (n-1) alternatives, which start | |
| 5714 with an on_failure_jump (see above) that jumps to right | |
| 5715 past a jump_past_alt. */ | |
| 5716 | |
| 5717 while ((re_opcode_t) p1[mcnt-3] == jump_past_alt) | |
| 5718 { | |
| 5719 /* `mcnt' holds how many bytes long the alternative | |
| 5720 is, including the ending `jump_past_alt' and | |
| 5721 its number. */ | |
| 5722 | |
| 5723 if (!alt_match_null_string_p (p1, p1 + mcnt - 3, | |
| 5724 reg_info)) | |
| 5725 return false; | |
| 5726 | |
| 5727 /* Move to right after this alternative, including the | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5728 jump_past_alt. */ |
| 939 | 5729 p1 += mcnt; |
| 5730 | |
| 5731 /* Break if it's the beginning of an n-th alternative | |
| 5732 that doesn't begin with an on_failure_jump. */ | |
| 5733 if ((re_opcode_t) *p1 != on_failure_jump) | |
| 5734 break; | |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5735 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5736 /* Still have to check that it's not an n-th |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5737 alternative that starts with an on_failure_jump. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5738 p1++; |
| 939 | 5739 EXTRACT_NUMBER_AND_INCR (mcnt, p1); |
| 5740 if ((re_opcode_t) p1[mcnt-3] != jump_past_alt) | |
| 5741 { | |
| 5742 /* Get to the beginning of the n-th alternative. */ | |
| 5743 p1 -= 3; | |
| 5744 break; | |
| 5745 } | |
| 5746 } | |
| 5747 | |
| 5748 /* Deal with the last alternative: go back and get number | |
| 5749 of the `jump_past_alt' just before it. `mcnt' contains | |
| 5750 the length of the alternative. */ | |
| 5751 EXTRACT_NUMBER (mcnt, p1 - 2); | |
| 5752 | |
| 5753 if (!alt_match_null_string_p (p1, p1 + mcnt, reg_info)) | |
| 5754 return false; | |
| 5755 | |
| 5756 p1 += mcnt; /* Get past the n-th alternative. */ | |
| 5757 } /* if mcnt > 0 */ | |
| 5758 break; | |
| 5759 | |
| 5760 | |
| 5761 case stop_memory: | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5762 assert (p1[1] == **p); |
| 939 | 5763 *p = p1 + 2; |
| 5764 return true; | |
| 5765 | |
| 5766 | |
| 5767 default: | |
| 5768 if (!common_op_match_null_string_p (&p1, end, reg_info)) | |
| 5769 return false; | |
| 5770 } | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5771 } /* while p1 < end */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5772 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5773 return false; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5774 } /* group_match_null_string_p */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5775 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5776 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5777 /* Similar to group_match_null_string_p, but doesn't deal with alternatives: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5778 It expects P to be the first byte of a single alternative and END one |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5779 byte past the last. The alternative can contain groups. */ |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5780 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5781 static boolean |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5782 alt_match_null_string_p (p, end, reg_info) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5783 unsigned char *p, *end; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5784 register_info_type *reg_info; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5785 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5786 int mcnt; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5787 unsigned char *p1 = p; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5788 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5789 while (p1 < end) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5790 { |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5791 /* Skip over opcodes that can match nothing, and break when we get |
| 939 | 5792 to one that can't. */ |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5793 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5794 switch ((re_opcode_t) *p1) |
| 939 | 5795 { |
| 5796 /* It's a loop. */ | |
| 5797 case on_failure_jump: | |
| 5798 p1++; | |
| 5799 EXTRACT_NUMBER_AND_INCR (mcnt, p1); | |
| 5800 p1 += mcnt; | |
| 5801 break; | |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5802 |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5803 default: |
| 939 | 5804 if (!common_op_match_null_string_p (&p1, end, reg_info)) |
| 5805 return false; | |
| 5806 } | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5807 } /* while p1 < end */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5808 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5809 return true; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5810 } /* alt_match_null_string_p */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5811 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5812 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5813 /* Deals with the ops common to group_match_null_string_p and |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5814 alt_match_null_string_p. |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5815 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5816 Sets P to one after the op and its arguments, if any. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5817 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5818 static boolean |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5819 common_op_match_null_string_p (p, end, reg_info) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5820 unsigned char **p, *end; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5821 register_info_type *reg_info; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5822 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5823 int mcnt; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5824 boolean ret; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5825 int reg_no; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5826 unsigned char *p1 = *p; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5827 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5828 switch ((re_opcode_t) *p1++) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5829 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5830 case no_op: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5831 case begline: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5832 case endline: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5833 case begbuf: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5834 case endbuf: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5835 case wordbeg: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5836 case wordend: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5837 case wordbound: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5838 case notwordbound: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5839 #ifdef emacs |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5840 case before_dot: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5841 case at_dot: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5842 case after_dot: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5843 #endif |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5844 break; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5845 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5846 case start_memory: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5847 reg_no = *p1; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5848 assert (reg_no > 0 && reg_no <= MAX_REGNUM); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5849 ret = group_match_null_string_p (&p1, end, reg_info); |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5850 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5851 /* Have to set this here in case we're checking a group which |
| 939 | 5852 contains a group and a back reference to it. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5853 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5854 if (REG_MATCH_NULL_STRING_P (reg_info[reg_no]) == MATCH_NULL_UNSET_VALUE) |
| 939 | 5855 REG_MATCH_NULL_STRING_P (reg_info[reg_no]) = ret; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5856 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5857 if (!ret) |
| 939 | 5858 return false; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5859 break; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5860 |
| 939 | 5861 /* If this is an optimized succeed_n for zero times, make the jump. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5862 case jump: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5863 EXTRACT_NUMBER_AND_INCR (mcnt, p1); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5864 if (mcnt >= 0) |
| 939 | 5865 p1 += mcnt; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5866 else |
| 939 | 5867 return false; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5868 break; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5869 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5870 case succeed_n: |
| 939 | 5871 /* Get to the number of times to succeed. */ |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5872 p1 += 2; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5873 EXTRACT_NUMBER_AND_INCR (mcnt, p1); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5874 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5875 if (mcnt == 0) |
| 939 | 5876 { |
| 5877 p1 -= 4; | |
| 5878 EXTRACT_NUMBER_AND_INCR (mcnt, p1); | |
| 5879 p1 += mcnt; | |
| 5880 } | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5881 else |
| 939 | 5882 return false; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5883 break; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5884 |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5885 case duplicate: |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5886 if (!REG_MATCH_NULL_STRING_P (reg_info[*p1])) |
| 939 | 5887 return false; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5888 break; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5889 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5890 case set_number_at: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5891 p1 += 4; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5892 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5893 default: |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5894 /* All other opcodes mean we cannot match the empty string. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5895 return false; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5896 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5897 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5898 *p = p1; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5899 return true; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5900 } /* common_op_match_null_string_p */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5901 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5902 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5903 /* Return zero if TRANSLATE[S1] and TRANSLATE[S2] are identical for LEN |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5904 bytes; nonzero otherwise. */ |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5905 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5906 static int |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5907 bcmp_translate (s1, s2, len, translate) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5908 unsigned char *s1, *s2; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5909 register int len; |
|
501
f29b13c2cefd
(TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents:
490
diff
changeset
|
5910 RE_TRANSLATE_TYPE translate; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5911 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5912 register unsigned char *p1 = s1, *p2 = s2; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5913 while (len) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5914 { |
|
963
ed0235161e4b
(TRANSLATE, re_search_2, re_match_2_internal,bcmp_translate):
Richard Stallman <rms@gnu.org>
parents:
961
diff
changeset
|
5915 if (RE_TRANSLATE (translate, *p1++) != RE_TRANSLATE (translate, *p2++)) |
|
ed0235161e4b
(TRANSLATE, re_search_2, re_match_2_internal,bcmp_translate):
Richard Stallman <rms@gnu.org>
parents:
961
diff
changeset
|
5916 return 1; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5917 len--; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5918 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5919 return 0; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5920 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5921 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5922 /* Entry points for GNU code. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5923 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5924 /* re_compile_pattern is the GNU regular expression compiler: it |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5925 compiles PATTERN (of length SIZE) and puts the result in BUFP. |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5926 Returns 0 if the pattern was valid, otherwise an error string. |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5927 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5928 Assumes the `allocated' (and perhaps `buffer') and `translate' fields |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5929 are set in BUFP on entry. |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5930 |
| 939 | 5931 We call regex_compile to do the actual compilation. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5932 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5933 const char * |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5934 re_compile_pattern (pattern, length, bufp) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5935 const char *pattern; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5936 int length; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5937 struct re_pattern_buffer *bufp; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5938 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5939 reg_errcode_t ret; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5940 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5941 /* GNU code is written to assume at least RE_NREGS registers will be set |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5942 (and at least one extra will be -1). */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5943 bufp->regs_allocated = REGS_UNALLOCATED; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5944 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5945 /* And GNU code determines whether or not to get register information |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5946 by passing null for the REGS argument to re_match, etc., not by |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5947 setting no_sub. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5948 bufp->no_sub = 0; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5949 |
| 939 | 5950 /* Match anchors at newline. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5951 bufp->newline_anchor = 1; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5952 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5953 ret = regex_compile (pattern, length, re_syntax_options, bufp); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5954 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5955 if (!ret) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5956 return NULL; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5957 return gettext (re_error_msgid[(int) ret]); |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5958 } |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5959 |
| 939 | 5960 /* Entry points compatible with 4.2 BSD regex library. We don't define |
| 5961 them unless specifically requested. */ | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5962 |
|
622
152fc00ed9b5
Tue May 21 19:18:05 1996 Roland McGrath <roland@delasyd.gnu.ai.mit.edu>
Roland McGrath <roland@gnu.org>
parents:
607
diff
changeset
|
5963 #if defined (_REGEX_RE_COMP) || defined (_LIBC) |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5964 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5965 /* BSD has one and only one pattern buffer. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5966 static struct re_pattern_buffer re_comp_buf; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5967 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5968 char * |
|
636
ddd029a89661
[_LIBC] (re_comp, re_exec): Use `weak_function' keyword in defn instead of
Roland McGrath <roland@gnu.org>
parents:
631
diff
changeset
|
5969 #ifdef _LIBC |
|
ddd029a89661
[_LIBC] (re_comp, re_exec): Use `weak_function' keyword in defn instead of
Roland McGrath <roland@gnu.org>
parents:
631
diff
changeset
|
5970 /* Make these definitions weak in libc, so POSIX programs can redefine |
|
ddd029a89661
[_LIBC] (re_comp, re_exec): Use `weak_function' keyword in defn instead of
Roland McGrath <roland@gnu.org>
parents:
631
diff
changeset
|
5971 these names if they don't use our functions, and still use |
|
ddd029a89661
[_LIBC] (re_comp, re_exec): Use `weak_function' keyword in defn instead of
Roland McGrath <roland@gnu.org>
parents:
631
diff
changeset
|
5972 regcomp/regexec below without link errors. */ |
|
ddd029a89661
[_LIBC] (re_comp, re_exec): Use `weak_function' keyword in defn instead of
Roland McGrath <roland@gnu.org>
parents:
631
diff
changeset
|
5973 weak_function |
|
ddd029a89661
[_LIBC] (re_comp, re_exec): Use `weak_function' keyword in defn instead of
Roland McGrath <roland@gnu.org>
parents:
631
diff
changeset
|
5974 #endif |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5975 re_comp (s) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5976 const char *s; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5977 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5978 reg_errcode_t ret; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
5979 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5980 if (!s) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5981 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5982 if (!re_comp_buf.buffer) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5983 return gettext ("No previous regular expression"); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5984 return 0; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5985 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5986 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5987 if (!re_comp_buf.buffer) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5988 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5989 re_comp_buf.buffer = (unsigned char *) malloc (200); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5990 if (re_comp_buf.buffer == NULL) |
| 939 | 5991 return gettext (re_error_msgid[(int) REG_ESPACE]); |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5992 re_comp_buf.allocated = 200; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5993 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5994 re_comp_buf.fastmap = (char *) malloc (1 << BYTEWIDTH); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5995 if (re_comp_buf.fastmap == NULL) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5996 return gettext (re_error_msgid[(int) REG_ESPACE]); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5997 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5998 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
5999 /* Since `re_exec' always passes NULL for the `regs' argument, we |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6000 don't need to initialize the pattern buffer fields which affect it. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6001 |
| 939 | 6002 /* Match anchors at newlines. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6003 re_comp_buf.newline_anchor = 1; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6004 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6005 ret = regex_compile (s, strlen (s), re_syntax_options, &re_comp_buf); |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
6006 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6007 if (!ret) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6008 return NULL; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6009 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6010 /* Yes, we're discarding `const' here if !HAVE_LIBINTL. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6011 return (char *) gettext (re_error_msgid[(int) ret]); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6012 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6013 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6014 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6015 int |
|
636
ddd029a89661
[_LIBC] (re_comp, re_exec): Use `weak_function' keyword in defn instead of
Roland McGrath <roland@gnu.org>
parents:
631
diff
changeset
|
6016 #ifdef _LIBC |
|
ddd029a89661
[_LIBC] (re_comp, re_exec): Use `weak_function' keyword in defn instead of
Roland McGrath <roland@gnu.org>
parents:
631
diff
changeset
|
6017 weak_function |
|
ddd029a89661
[_LIBC] (re_comp, re_exec): Use `weak_function' keyword in defn instead of
Roland McGrath <roland@gnu.org>
parents:
631
diff
changeset
|
6018 #endif |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6019 re_exec (s) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6020 const char *s; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6021 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6022 const int len = strlen (s); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6023 return |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6024 0 <= re_search (&re_comp_buf, s, len, 0, len, (struct re_registers *) 0); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6025 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6026 #endif /* _REGEX_RE_COMP */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6027 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6028 /* POSIX.2 functions. Don't define these for Emacs. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6029 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6030 #ifndef emacs |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6031 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6032 /* regcomp takes a regular expression as a string and compiles it. |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6033 |
| 939 | 6034 PREG is a regex_t *. We do not expect any fields to be initialized, |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6035 since POSIX says we shouldn't. Thus, we set |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6036 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6037 `buffer' to the compiled pattern; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6038 `used' to the length of the compiled pattern; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6039 `syntax' to RE_SYNTAX_POSIX_EXTENDED if the |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6040 REG_EXTENDED bit in CFLAGS is set; otherwise, to |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6041 RE_SYNTAX_POSIX_BASIC; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6042 `newline_anchor' to REG_NEWLINE being set in CFLAGS; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6043 `fastmap' and `fastmap_accurate' to zero; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6044 `re_nsub' to the number of subexpressions in PATTERN. |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6045 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6046 PATTERN is the address of the pattern string. |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6047 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6048 CFLAGS is a series of bits which affect compilation. |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6049 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6050 If REG_EXTENDED is set, we use POSIX extended syntax; otherwise, we |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6051 use POSIX basic syntax. |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6052 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6053 If REG_NEWLINE is set, then . and [^...] don't match newline. |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6054 Also, regexec will try a match beginning after every newline. |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6055 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6056 If REG_ICASE is set, then we considers upper- and lowercase |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6057 versions of letters to be equivalent when matching. |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6058 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6059 If REG_NOSUB is set, then when PREG is passed to regexec, that |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6060 routine will report only success or failure, and nothing about the |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6061 registers. |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6062 |
| 939 | 6063 It returns 0 if it succeeds, nonzero if it doesn't. (See regex.h for |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6064 the return codes and their meanings.) */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6065 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6066 int |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6067 regcomp (preg, pattern, cflags) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6068 regex_t *preg; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
6069 const char *pattern; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6070 int cflags; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6071 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6072 reg_errcode_t ret; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6073 unsigned syntax |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6074 = (cflags & REG_EXTENDED) ? |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6075 RE_SYNTAX_POSIX_EXTENDED : RE_SYNTAX_POSIX_BASIC; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6076 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6077 /* regex_compile will allocate the space for the compiled pattern. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6078 preg->buffer = 0; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6079 preg->allocated = 0; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6080 preg->used = 0; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
6081 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6082 /* Don't bother to use a fastmap when searching. This simplifies the |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6083 REG_NEWLINE case: if we used a fastmap, we'd have to put all the |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6084 characters after newlines into the fastmap. This way, we just try |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6085 every character. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6086 preg->fastmap = 0; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
6087 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6088 if (cflags & REG_ICASE) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6089 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6090 unsigned i; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
6091 |
|
501
f29b13c2cefd
(TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents:
490
diff
changeset
|
6092 preg->translate |
|
f29b13c2cefd
(TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents:
490
diff
changeset
|
6093 = (RE_TRANSLATE_TYPE) malloc (CHAR_SET_SIZE |
|
f29b13c2cefd
(TRANSLATE, PATFETCH): Cast elt of `translate'.
Richard Stallman <rms@gnu.org>
parents:
490
diff
changeset
|
6094 * sizeof (*(RE_TRANSLATE_TYPE)0)); |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6095 if (preg->translate == NULL) |
| 939 | 6096 return (int) REG_ESPACE; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6097 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6098 /* Map uppercase characters to corresponding lowercase ones. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6099 for (i = 0; i < CHAR_SET_SIZE; i++) |
| 939 | 6100 preg->translate[i] = ISUPPER (i) ? tolower (i) : i; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6101 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6102 else |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6103 preg->translate = NULL; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6104 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6105 /* If REG_NEWLINE is set, newlines are treated differently. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6106 if (cflags & REG_NEWLINE) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6107 { /* REG_NEWLINE implies neither . nor [^...] match newline. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6108 syntax &= ~RE_DOT_NEWLINE; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6109 syntax |= RE_HAT_LISTS_NOT_NEWLINE; |
| 939 | 6110 /* It also changes the matching behavior. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6111 preg->newline_anchor = 1; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6112 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6113 else |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6114 preg->newline_anchor = 0; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6115 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6116 preg->no_sub = !!(cflags & REG_NOSUB); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6117 |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
6118 /* POSIX says a null character in the pattern terminates it, so we |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6119 can use strlen here in compiling the pattern. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6120 ret = regex_compile (pattern, strlen (pattern), syntax, preg); |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
6121 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6122 /* POSIX doesn't distinguish between an unmatched open-group and an |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6123 unmatched close-group: both are REG_EPAREN. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6124 if (ret == REG_ERPAREN) ret = REG_EPAREN; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
6125 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6126 return (int) ret; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6127 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6128 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6129 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6130 /* regexec searches for a given pattern, specified by PREG, in the |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6131 string STRING. |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
6132 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6133 If NMATCH is zero or REG_NOSUB was set in the cflags argument to |
| 939 | 6134 `regcomp', we ignore PMATCH. Otherwise, we assume PMATCH has at |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6135 least NMATCH elements, and we set them to the offsets of the |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6136 corresponding matched substrings. |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
6137 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6138 EFLAGS specifies `execution flags' which affect matching: if |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6139 REG_NOTBOL is set, then ^ does not match at the beginning of the |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6140 string; if REG_NOTEOL is set, then $ does not match at the end. |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
6141 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6142 We return 0 if we find a match and REG_NOMATCH if not. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6143 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6144 int |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6145 regexec (preg, string, nmatch, pmatch, eflags) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6146 const regex_t *preg; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
6147 const char *string; |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
6148 size_t nmatch; |
|
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
6149 regmatch_t pmatch[]; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6150 int eflags; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6151 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6152 int ret; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6153 struct re_registers regs; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6154 regex_t private_preg; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6155 int len = strlen (string); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6156 boolean want_reg_info = !preg->no_sub && nmatch > 0; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6157 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6158 private_preg = *preg; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
6159 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6160 private_preg.not_bol = !!(eflags & REG_NOTBOL); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6161 private_preg.not_eol = !!(eflags & REG_NOTEOL); |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
6162 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6163 /* The user has told us exactly how many registers to return |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6164 information about, via `nmatch'. We have to pass that on to the |
| 939 | 6165 matching routines. */ |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6166 private_preg.regs_allocated = REGS_FIXED; |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
6167 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6168 if (want_reg_info) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6169 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6170 regs.num_regs = nmatch; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6171 regs.start = TALLOC (nmatch, regoff_t); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6172 regs.end = TALLOC (nmatch, regoff_t); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6173 if (regs.start == NULL || regs.end == NULL) |
| 939 | 6174 return (int) REG_NOMATCH; |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6175 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6176 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6177 /* Perform the searching operation. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6178 ret = re_search (&private_preg, string, len, |
| 939 | 6179 /* start: */ 0, /* range: */ len, |
| 6180 want_reg_info ? ®s : (struct re_registers *) 0); | |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
6181 |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6182 /* Copy the register information to the POSIX structure. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6183 if (want_reg_info) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6184 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6185 if (ret >= 0) |
| 939 | 6186 { |
| 6187 unsigned r; | |
| 6188 | |
| 6189 for (r = 0; r < nmatch; r++) | |
| 6190 { | |
| 6191 pmatch[r].rm_so = regs.start[r]; | |
| 6192 pmatch[r].rm_eo = regs.end[r]; | |
| 6193 } | |
| 6194 } | |
| 6195 | |
| 6196 /* If we needed the temporary register info, free the space now. */ | |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6197 free (regs.start); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6198 free (regs.end); |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6199 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6200 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6201 /* We want zero return to mean success, unlike `re_search'. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6202 return ret >= 0 ? (int) REG_NOERROR : (int) REG_NOMATCH; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6203 } |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6204 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6205 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6206 /* Returns a message corresponding to an error code, ERRCODE, returned |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6207 from either regcomp or regexec. We don't use PREG here. */ |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6208 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6209 size_t |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6210 regerror (errcode, preg, errbuf, errbuf_size) |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6211 int errcode; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6212 const regex_t *preg; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6213 char *errbuf; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6214 size_t errbuf_size; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6215 { |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6216 const char *msg; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6217 size_t msg_size; |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6218 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6219 if (errcode < 0 |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6220 || errcode >= (sizeof (re_error_msgid) / sizeof (re_error_msgid[0]))) |
|
515
69ba3b63e1d1
(gettext_noop): New macro, identity fn.
Roland McGrath <roland@gnu.org>
parents:
511
diff
changeset
|
6221 /* Only error codes returned by the rest of the code should be passed |
| 939 | 6222 to this routine. If we are given anything else, or if other regex |
|
441
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
438
diff
changeset
|
6223 code generates an invalid error code, then the program has a bug. |
|
403b2dfdfa0b
Add `#ifdef _LIBC' in a few places, so this can be compiled in libc.
Roland McGrath <roland@gnu.org>
parents:
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6224 Dump core so we can fix it. */ |
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6225 abort (); |
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6226 |
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6227 msg = gettext (re_error_msgid[errcode]); |
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6228 |
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6229 msg_size = strlen (msg) + 1; /* Includes the null. */ |
|
515
69ba3b63e1d1
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6230 |
|
441
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6231 if (errbuf_size != 0) |
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6232 { |
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6233 if (msg_size > errbuf_size) |
| 939 | 6234 { |
| 6235 strncpy (errbuf, msg, errbuf_size - 1); | |
| 6236 errbuf[errbuf_size - 1] = 0; | |
| 6237 } | |
|
441
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6238 else |
| 939 | 6239 strcpy (errbuf, msg); |
|
441
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6240 } |
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6241 |
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6242 return msg_size; |
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6243 } |
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6244 |
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6245 |
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6246 /* Free dynamically allocated space used by PREG. */ |
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6247 |
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6248 void |
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6249 regfree (preg) |
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6250 regex_t *preg; |
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6251 { |
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6252 if (preg->buffer != NULL) |
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6253 free (preg->buffer); |
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6254 preg->buffer = NULL; |
|
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6255 |
|
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6256 preg->allocated = 0; |
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6257 preg->used = 0; |
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6258 |
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6259 if (preg->fastmap != NULL) |
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6260 free (preg->fastmap); |
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6261 preg->fastmap = NULL; |
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6262 preg->fastmap_accurate = 0; |
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6263 |
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6264 if (preg->translate != NULL) |
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6265 free (preg->translate); |
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6266 preg->translate = NULL; |
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6267 } |
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6268 |
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6269 #endif /* not emacs */ |