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1 /* getopt_long and getopt_long_only entry points for GNU getopt.
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2 Copyright (C) 1987,88,89,90,91,92,93,94,96,97,98,2005
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3 Free Software Foundation, Inc.
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4
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5 NOTE: This source is derived from an old version taken from the GNU C
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6 Library (glibc).
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7
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8 This program is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published by the
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10 Free Software Foundation; either version 2, or (at your option) any
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11 later version.
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12
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13 This program is distributed in the hope that it will be useful,
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14 but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 GNU General Public License for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with this program; if not, write to the Free Software
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20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301,
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21 USA. */
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22
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23 #ifdef HAVE_CONFIG_H
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24 #include <config.h>
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25 #endif
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26
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27 #if !defined __STDC__ || !__STDC__
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28 /* This is a separate conditional since some stdc systems
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29 reject `defined (const)'. */
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30 #ifndef const
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31 #define const
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32 #endif
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33 #endif
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34
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35 #include <stdio.h>
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36
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37 #include "getopt.h"
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38
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39 /* Comment out all this code if we are using the GNU C Library, and are not
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40 actually compiling the library itself. This code is part of the GNU C
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41 Library, but also included in many other GNU distributions. Compiling
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42 and linking in this code is a waste when using the GNU C library
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43 (especially if it is a shared library). Rather than having every GNU
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44 program understand `configure --with-gnu-libc' and omit the object files,
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45 it is simpler to just do this in the source for each such file. */
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46
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47 #define GETOPT_INTERFACE_VERSION 2
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48 #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
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49 #include <gnu-versions.h>
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50 #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
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51 #define ELIDE_CODE
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52 #endif
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53 #endif
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54
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55 #ifndef ELIDE_CODE
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56
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57
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58 /* This needs to come after some library #include
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59 to get __GNU_LIBRARY__ defined. */
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60 #ifdef __GNU_LIBRARY__
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61 #include <stdlib.h>
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62 #endif
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63
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64 #ifndef NULL
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65 #define NULL 0
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66 #endif
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67
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68 int
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69 getopt_long (int argc, char *const *argv, const char *options,
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70 const struct option *long_options, int *opt_index)
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71 {
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72 return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
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73 }
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74
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75 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
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76 If an option that starts with '-' (not '--') doesn't match a long option,
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77 but does match a short option, it is parsed as a short option
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78 instead. */
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79
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80 int
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81 getopt_long_only (int argc, char *const *argv, const char *options,
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82 const struct option *long_options, int *opt_index)
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83 {
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84 return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
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85 }
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86
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87
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88 #endif /* Not ELIDE_CODE. */
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89
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90 #ifdef TEST
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91
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92 #include <stdio.h>
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93
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94 int
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95 main (int argc, char **argv)
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96 {
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97 int c;
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98 int digit_optind = 0;
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99
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100 while (1)
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101 {
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102 int this_option_optind = optind ? optind : 1;
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103 int option_index = 0;
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104 static struct option long_options[] =
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105 {
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106 {"add", 1, 0, 0},
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107 {"append", 0, 0, 0},
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108 {"delete", 1, 0, 0},
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109 {"verbose", 0, 0, 0},
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110 {"create", 0, 0, 0},
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111 {"file", 1, 0, 0},
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112 {0, 0, 0, 0}
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113 };
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114
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115 c = getopt_long (argc, argv, "abc:d:0123456789",
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116 long_options, &option_index);
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117 if (c == -1)
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118 break;
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119
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120 switch (c)
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121 {
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122 case 0:
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123 printf ("option %s", long_options[option_index].name);
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124 if (optarg)
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125 printf (" with arg %s", optarg);
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126 printf ("\n");
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127 break;
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128
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129 case '0':
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130 case '1':
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131 case '2':
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132 case '3':
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133 case '4':
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134 case '5':
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135 case '6':
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136 case '7':
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137 case '8':
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138 case '9':
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139 if (digit_optind != 0 && digit_optind != this_option_optind)
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140 printf ("digits occur in two different argv-elements.\n");
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141 digit_optind = this_option_optind;
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142 printf ("option %c\n", c);
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143 break;
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144
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145 case 'a':
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146 printf ("option a\n");
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147 break;
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148
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149 case 'b':
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150 printf ("option b\n");
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151 break;
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152
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153 case 'c':
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154 printf ("option c with value `%s'\n", optarg);
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155 break;
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156
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157 case 'd':
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158 printf ("option d with value `%s'\n", optarg);
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159 break;
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160
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161 case '?':
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162 break;
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163
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164 default:
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165 printf ("?? getopt returned character code 0%o ??\n", c);
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166 }
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167 }
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168
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169 if (optind < argc)
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170 {
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171 printf ("non-option ARGV-elements: ");
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172 while (optind < argc)
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173 printf ("%s ", argv[optind++]);
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174 printf ("\n");
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175 }
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176
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177 exit (0);
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178 }
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179
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180 #endif /* TEST */
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