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428
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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 Free Software Foundation, Inc.
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3
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4 NOTE: The canonical source of this file is maintained with the GNU C Library.
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5 Bugs can be reported to bug-glibc@prep.ai.mit.edu.
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6
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7 This program is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by the
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9 Free Software Foundation; either version 2, or (at your option) any
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10 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
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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
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19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
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20 USA. */
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21
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22 #ifdef HAVE_CONFIG_H
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23 #include <../src/config.h>
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24 #endif
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25
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26 #include "getopt.h"
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27
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28 #include <stdio.h>
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29
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30 /* Comment out all this code if we are using the GNU C Library, and are not
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31 actually compiling the library itself. This code is part of the GNU C
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32 Library, but also included in many other GNU distributions. Compiling
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33 and linking in this code is a waste when using the GNU C library
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34 (especially if it is a shared library). Rather than having every GNU
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35 program understand `configure --with-gnu-libc' and omit the object files,
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36 it is simpler to just do this in the source for each such file. */
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37
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38 #define GETOPT_INTERFACE_VERSION 2
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39 #if !defined (_LIBC) && defined (__GLIBC__) && __GLIBC__ >= 2
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40 #include <gnu-versions.h>
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41 #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
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42 #define ELIDE_CODE
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43 #endif
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44 #endif
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45
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46 #ifndef ELIDE_CODE
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47
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48
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49 /* This needs to come after some library #include
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50 to get __GNU_LIBRARY__ defined. */
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51 #ifdef __GNU_LIBRARY__
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52 #include <stdlib.h>
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53 #endif
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54
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55 #ifndef NULL
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56 #define NULL 0
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57 #endif
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58
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59 int
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60 getopt_long (int argc, char *const *argv, const char *options,
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61 const struct option *long_options, int *opt_index)
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62 {
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63 return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
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64 }
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65
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66 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
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67 If an option that starts with '-' (not '--') doesn't match a long option,
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68 but does match a short option, it is parsed as a short option
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69 instead. */
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70
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71 int
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72 getopt_long_only (int argc, char *const *argv, const char *options,
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73 const struct option *long_options, int *opt_index)
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74 {
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75 return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
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76 }
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77
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78
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79 #endif /* Not ELIDE_CODE. */
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80
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81 #ifdef TEST
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82
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83 #include <stdio.h>
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84
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85 int
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86 main (int argc, char **argv)
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87 {
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88 int c;
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89 int digit_optind = 0;
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90
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91 while (1)
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92 {
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93 int this_option_optind = optind ? optind : 1;
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94 int option_index = 0;
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95 static struct option long_options[] =
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96 {
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97 {"add", 1, 0, 0},
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98 {"append", 0, 0, 0},
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99 {"delete", 1, 0, 0},
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100 {"verbose", 0, 0, 0},
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101 {"create", 0, 0, 0},
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102 {"file", 1, 0, 0},
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103 {0, 0, 0, 0}
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104 };
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105
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106 c = getopt_long (argc, argv, "abc:d:0123456789",
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107 long_options, &option_index);
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108 if (c == -1)
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109 break;
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110
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111 switch (c)
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112 {
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113 case 0:
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114 printf ("option %s", long_options[option_index].name);
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115 if (optarg)
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116 printf (" with arg %s", optarg);
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117 printf ("\n");
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118 break;
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119
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120 case '0':
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121 case '1':
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122 case '2':
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123 case '3':
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124 case '4':
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125 case '5':
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126 case '6':
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127 case '7':
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128 case '8':
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129 case '9':
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130 if (digit_optind != 0 && digit_optind != this_option_optind)
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131 printf ("digits occur in two different argv-elements.\n");
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132 digit_optind = this_option_optind;
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133 printf ("option %c\n", c);
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134 break;
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135
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136 case 'a':
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137 printf ("option a\n");
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138 break;
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139
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140 case 'b':
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141 printf ("option b\n");
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142 break;
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143
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144 case 'c':
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145 printf ("option c with value `%s'\n", optarg);
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146 break;
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147
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148 case 'd':
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149 printf ("option d with value `%s'\n", optarg);
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150 break;
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151
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152 case '?':
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153 break;
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154
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155 default:
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156 printf ("?? getopt returned character code 0%o ??\n", c);
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157 }
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158 }
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159
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160 if (optind < argc)
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161 {
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162 printf ("non-option ARGV-elements: ");
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163 while (optind < argc)
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164 printf ("%s ", argv[optind++]);
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165 printf ("\n");
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166 }
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167
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168 exit (0);
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169 }
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170
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171 #endif /* TEST */
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