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annotate lib/getopt_int.h @ 18029:e4a13d95b503

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mgetgroups: port to strict OS X * doc/glibc-functions/getgrouplist.texi (getgrouplist): Document the getgrouplist problem. * lib/mgetgroups.c (getgrouplist_gids) [HAVE_GETGROUPLIST]: New macro. (mgetgroups): Use it. * m4/mgetgroups.m4 (gl_MGETGROUPS): Check for OS X signature for getgrouplist.
author Paul Eggert <eggert@cs.ucla.edu>
date Sun, 28 Jun 2015 23:43:35 -0700
parents ab58d4870664
children
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1 /* Internal declarations for getopt.
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2 Copyright (C) 1989-1994, 1996-1999, 2001, 2003-2004, 2009-2015 Free Software
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3 Foundation, Inc.
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4 This file is part of the GNU C Library.
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5
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6 This program is free software: you can redistribute it and/or modify
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7 it under the terms of the GNU General Public License as published by
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8 the Free Software Foundation; either version 3 of the License, or
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9 (at your option) any later version.
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10
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11 This program is distributed in the hope that it will be useful,
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12 but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 GNU General Public License for more details.
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15
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16 You should have received a copy of the GNU General Public License
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17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
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18
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19 #ifndef _GETOPT_INT_H
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20 #define _GETOPT_INT_H 1
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21
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22 #include <getopt.h>
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23
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24 extern int _getopt_internal (int ___argc, char **___argv,
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25 const char *__shortopts,
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26 const struct option *__longopts, int *__longind,
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27 int __long_only, int __posixly_correct);
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30 /* Reentrant versions which can handle parsing multiple argument
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31 vectors at the same time. */
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32
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33 /* Describe how to deal with options that follow non-option ARGV-elements.
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34
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35 If the caller did not specify anything,
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36 the default is REQUIRE_ORDER if the environment variable
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37 POSIXLY_CORRECT is defined, PERMUTE otherwise.
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38
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39 REQUIRE_ORDER means don't recognize them as options;
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40 stop option processing when the first non-option is seen.
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41 This is what Unix does.
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42 This mode of operation is selected by either setting the environment
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43 variable POSIXLY_CORRECT, or using '+' as the first character
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44 of the list of option characters, or by calling getopt.
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45
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46 PERMUTE is the default. We permute the contents of ARGV as we
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47 scan, so that eventually all the non-options are at the end.
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48 This allows options to be given in any order, even with programs
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49 that were not written to expect this.
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50
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51 RETURN_IN_ORDER is an option available to programs that were
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52 written to expect options and other ARGV-elements in any order
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53 and that care about the ordering of the two. We describe each
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54 non-option ARGV-element as if it were the argument of an option
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55 with character code 1. Using '-' as the first character of the
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56 list of option characters selects this mode of operation.
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57
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58 The special argument '--' forces an end of option-scanning regardless
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59 of the value of 'ordering'. In the case of RETURN_IN_ORDER, only
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60 '--' can cause 'getopt' to return -1 with 'optind' != ARGC. */
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61
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62 enum __ord
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63 {
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64 REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER
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65 };
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66
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67 /* Data type for reentrant functions. */
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68 struct _getopt_data
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69 {
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70 /* These have exactly the same meaning as the corresponding global
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71 variables, except that they are used for the reentrant
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72 versions of getopt. */
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73 int optind;
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74 int opterr;
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75 int optopt;
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76 char *optarg;
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77
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78 /* Internal members. */
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79
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80 /* True if the internal members have been initialized. */
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81 int __initialized;
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82
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83 /* The next char to be scanned in the option-element
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84 in which the last option character we returned was found.
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85 This allows us to pick up the scan where we left off.
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86
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87 If this is zero, or a null string, it means resume the scan
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88 by advancing to the next ARGV-element. */
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89 char *__nextchar;
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90
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91 /* See __ord above. */
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92 enum __ord __ordering;
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93
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94 /* If the POSIXLY_CORRECT environment variable is set
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95 or getopt was called. */
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96 int __posixly_correct;
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97
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98
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99 /* Handle permutation of arguments. */
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100
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101 /* Describe the part of ARGV that contains non-options that have
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102 been skipped. 'first_nonopt' is the index in ARGV of the first
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103 of them; 'last_nonopt' is the index after the last of them. */
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104
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105 int __first_nonopt;
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106 int __last_nonopt;
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107
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108 #if defined _LIBC && defined USE_NONOPTION_FLAGS
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109 int __nonoption_flags_max_len;
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110 int __nonoption_flags_len;
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111 #endif
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112 };
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113
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114 /* The initializer is necessary to set OPTIND and OPTERR to their
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115 default values and to clear the initialization flag. */
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116 #define _GETOPT_DATA_INITIALIZER { 1, 1 }
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117
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118 extern int _getopt_internal_r (int ___argc, char **___argv,
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119 const char *__shortopts,
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120 const struct option *__longopts, int *__longind,
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121 int __long_only, struct _getopt_data *__data,
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122 int __posixly_correct);
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123
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124 extern int _getopt_long_r (int ___argc, char **___argv,
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125 const char *__shortopts,
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126 const struct option *__longopts, int *__longind,
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127 struct _getopt_data *__data);
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128
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129 extern int _getopt_long_only_r (int ___argc, char **___argv,
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130 const char *__shortopts,
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131 const struct option *__longopts,
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132 int *__longind,
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133 struct _getopt_data *__data);
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134
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135 #endif /* getopt_int.h */