lib/getopt1.c

   1 /* getopt_long and getopt_long_only entry points for GNU getopt.
   2    Copyright (C) 1987-1994, 1996-1998, 2004, 2006, 2009-2016 Free Software
   3    Foundation, Inc.
   4    This file is part of the GNU C Library.
   5
   6    This program is free software: you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  18 \f
  19 #ifdef _LIBC
  20 # include <getopt.h>
  21 #else
  22 # include <config.h>
  23 # include "getopt.h"
  24 #endif
  25 #include "getopt_int.h"
  26
  27 #include <stdio.h>
  28
  29 /* This needs to come after some library #include
  30    to get __GNU_LIBRARY__ defined.  */
  31 #ifdef __GNU_LIBRARY__
  32 #include <stdlib.h>
  33 #endif
  34
  35 #ifndef NULL
  36 #define NULL 0
  37 #endif
  38
  39 int
  40 getopt_long (int argc, char *__getopt_argv_const *argv, const char *options,
  41              const struct option *long_options, int *opt_index)
  42 {
  43   return _getopt_internal (argc, (char **) argv, options, long_options,
  44                            opt_index, 0, 0);
  45 }
  46
  47 int
  48 _getopt_long_r (int argc, char **argv, const char *options,
  49                 const struct option *long_options, int *opt_index,
  50                 struct _getopt_data *d)
  51 {
  52   return _getopt_internal_r (argc, argv, options, long_options, opt_index,
  53                              0, d, 0);
  54 }
  55
  56 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
  57    If an option that starts with '-' (not '--') doesn't match a long option,
  58    but does match a short option, it is parsed as a short option
  59    instead.  */
  60
  61 int
  62 getopt_long_only (int argc, char *__getopt_argv_const *argv,
  63                   const char *options,
  64                   const struct option *long_options, int *opt_index)
  65 {
  66   return _getopt_internal (argc, (char **) argv, options, long_options,
  67                            opt_index, 1, 0);
  68 }
  69
  70 int
  71 _getopt_long_only_r (int argc, char **argv, const char *options,
  72                      const struct option *long_options, int *opt_index,
  73                      struct _getopt_data *d)
  74 {
  75   return _getopt_internal_r (argc, argv, options, long_options, opt_index,
  76                              1, d, 0);
  77 }
  78
  79 \f
  80 #ifdef TEST
  81
  82 #include <stdio.h>
  83
  84 int
  85 main (int argc, char **argv)
  86 {
  87   int c;
  88   int digit_optind = 0;
  89
  90   while (1)
  91     {
  92       int this_option_optind = optind ? optind : 1;
  93       int option_index = 0;
  94       static const struct option long_options[] =
  95       {
  96         {"add", 1, 0, 0},
  97         {"append", 0, 0, 0},
  98         {"delete", 1, 0, 0},
  99         {"verbose", 0, 0, 0},
 100         {"create", 0, 0, 0},
 101         {"file", 1, 0, 0},
 102         {0, 0, 0, 0}
 103       };
 104
 105       c = getopt_long (argc, argv, "abc:d:0123456789",
 106                        long_options, &option_index);
 107       if (c == -1)
 108         break;
 109
 110       switch (c)
 111         {
 112         case 0:
 113           printf ("option %s", long_options[option_index].name);
 114           if (optarg)
 115             printf (" with arg %s", optarg);
 116           printf ("\n");
 117           break;
 118
 119         case '0':
 120         case '1':
 121         case '2':
 122         case '3':
 123         case '4':
 124         case '5':
 125         case '6':
 126         case '7':
 127         case '8':
 128         case '9':
 129           if (digit_optind != 0 && digit_optind != this_option_optind)
 130             printf ("digits occur in two different argv-elements.\n");
 131           digit_optind = this_option_optind;
 132           printf ("option %c\n", c);
 133           break;
 134
 135         case 'a':
 136           printf ("option a\n");
 137           break;
 138
 139         case 'b':
 140           printf ("option b\n");
 141           break;
 142
 143         case 'c':
 144           printf ("option c with value '%s'\n", optarg);
 145           break;
 146
 147         case 'd':
 148           printf ("option d with value '%s'\n", optarg);
 149           break;
 150
 151         case '?':
 152           break;
 153
 154         default:
 155           printf ("?? getopt returned character code 0%o ??\n", c);
 156         }
 157     }
 158
 159   if (optind < argc)
 160     {
 161       printf ("non-option ARGV-elements: ");
 162       while (optind < argc)
 163         printf ("%s ", argv[optind++]);
 164       printf ("\n");
 165     }
 166
 167   exit (0);
 168 }
 169
 170 #endif /* TEST */