Mercurial > hgrepos > Python2 > PyMuPDF

annotate mupdf-source/thirdparty/jbig2dec/getopt.h @ 46:7ee69f120f19 default tip

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>>>>> tag v1.26.5+1 for changeset b74429b0f5c4
author Franz Glasner <fzglas.hg@dom66.de>
date Sat, 11 Oct 2025 17:17:30 +0200
parents b50eed0cc0ef
children
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1 /* Declarations for getopt.
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2 Copyright (C) 1989-1994, 1996-1999, 2001 Free Software Foundation, Inc.
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3 This file is part of the GNU C Library.
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4
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5 The GNU C Library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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10 The GNU C Library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with the GNU C Library; if not, write to the Free
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17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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18 02111-1307 USA. */
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20 #ifndef _GETOPT_H
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22 #ifndef __need_getopt
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23 # define _GETOPT_H 1
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24 #endif
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26 /* If __GNU_LIBRARY__ is not already defined, either we are being used
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27 standalone, or this is the first header included in the source file.
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28 If we are being used with glibc, we need to include <features.h>, but
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29 that does not exist if we are standalone. So: if __GNU_LIBRARY__ is
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30 not defined, include <ctype.h>, which will pull in <features.h> for us
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31 if it's from glibc. (Why ctype.h? It's guaranteed to exist and it
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32 doesn't flood the namespace with stuff the way some other headers do.) */
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33 #if !defined __GNU_LIBRARY__
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34 # include <ctype.h>
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35 #endif
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37 #ifdef __cplusplus
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38 extern "C"
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39 {
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40 #endif
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42 /* For communication from `getopt' to the caller.
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43 When `getopt' finds an option that takes an argument,
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44 the argument value is returned here.
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45 Also, when `ordering' is RETURN_IN_ORDER,
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46 each non-option ARGV-element is returned here. */
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48 extern char *optarg;
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50 /* Index in ARGV of the next element to be scanned.
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51 This is used for communication to and from the caller
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52 and for communication between successive calls to `getopt'.
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54 On entry to `getopt', zero means this is the first call; initialize.
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56 When `getopt' returns -1, this is the index of the first of the
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57 non-option elements that the caller should itself scan.
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59 Otherwise, `optind' communicates from one call to the next
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60 how much of ARGV has been scanned so far. */
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62 extern int optind;
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64 /* Callers store zero here to inhibit the error message `getopt' prints
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65 for unrecognized options. */
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67 extern int opterr;
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69 /* Set to an option character which was unrecognized. */
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71 extern int optopt;
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73 #ifndef __need_getopt
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74 /* Describe the long-named options requested by the application.
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75 The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
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76 of `struct option' terminated by an element containing a name which is
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77 zero.
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79 The field `has_arg' is:
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80 no_argument (or 0) if the option does not take an argument,
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81 required_argument (or 1) if the option requires an argument,
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82 optional_argument (or 2) if the option takes an optional argument.
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84 If the field `flag' is not NULL, it points to a variable that is set
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85 to the value given in the field `val' when the option is found, but
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86 left unchanged if the option is not found.
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88 To have a long-named option do something other than set an `int' to
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89 a compiled-in constant, such as set a value from `optarg', set the
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90 option's `flag' field to zero and its `val' field to a nonzero
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91 value (the equivalent single-letter option character, if there is
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92 one). For long options that have a zero `flag' field, `getopt'
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93 returns the contents of the `val' field. */
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95 struct option {
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96 # if (defined __STDC__ && __STDC__) || defined __cplusplus
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97 const char *name;
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98 # else
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99 char *name;
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100 # endif
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101 /* has_arg can't be an enum because some compilers complain about
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102 type mismatches in all the code that assumes it is an int. */
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103 int has_arg;
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104 int *flag;
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105 int val;
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106 };
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107
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108 /* Names for the values of the `has_arg' field of `struct option'. */
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109
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110 # define no_argument 0
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111 # define required_argument 1
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112 # define optional_argument 2
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113 #endif /* need getopt */
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114
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115 /* Get definitions and prototypes for functions to process the
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116 arguments in ARGV (ARGC of them, minus the program name) for
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117 options given in OPTS.
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118
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119 Return the option character from OPTS just read. Return -1 when
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120 there are no more options. For unrecognized options, or options
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121 missing arguments, `optopt' is set to the option letter, and '?' is
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122 returned.
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123
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124 The OPTS string is a list of characters which are recognized option
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125 letters, optionally followed by colons, specifying that that letter
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126 takes an argument, to be placed in `optarg'.
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127
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128 If a letter in OPTS is followed by two colons, its argument is
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129 optional. This behavior is specific to the GNU `getopt'.
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130
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131 The argument `--' causes premature termination of argument
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132 scanning, explicitly telling `getopt' that there are no more
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133 options.
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134
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135 If OPTS begins with `--', then non-option arguments are treated as
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136 arguments to the option '\0'. This behavior is specific to the GNU
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137 `getopt'. */
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138
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139 #if (defined __STDC__ && __STDC__) || defined __cplusplus
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140 # ifdef __GNU_LIBRARY__
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141 /* Many other libraries have conflicting prototypes for getopt, with
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142 differences in the consts, in stdlib.h. To avoid compilation
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143 errors, only prototype getopt for the GNU C library. */
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144 extern int getopt(int __argc, char *const *__argv, const char *__shortopts);
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145 # else /* not __GNU_LIBRARY__ */
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146 extern int getopt();
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147 # endif /* __GNU_LIBRARY__ */
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148
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149 # ifndef __need_getopt
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150 extern int getopt_long(int __argc, char *const *__argv, const char *__shortopts, const struct option *__longopts, int *__longind);
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151 extern int getopt_long_only(int __argc, char *const *__argv, const char *__shortopts, const struct option *__longopts, int *__longind);
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152
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153 /* Internal only. Users should not call this directly. */
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154 extern int _getopt_internal(int __argc, char *const *__argv, const char *__shortopts, const struct option *__longopts, int *__longind, int __long_only);
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155 # endif
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156 #else /* not __STDC__ */
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157 extern int getopt();
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158 # ifndef __need_getopt
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159 extern int getopt_long();
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160 extern int getopt_long_only();
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161
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162 extern int _getopt_internal();
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163 # endif
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164 #endif /* __STDC__ */
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165
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166 #ifdef __cplusplus
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167 }
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168 #endif
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169
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170 /* Make sure we later can get all the definitions and declarations. */
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171 #undef __need_getopt
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172
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173 #endif /* getopt.h */