gnu/dist/texinfo/lib/getopt1.c

   1 /*      $NetBSD$        */
   2
   3 /* getopt_long and getopt_long_only entry points for GNU getopt.
   4    Copyright (C) 1987,88,89,90,91,92,93,94,96,97,98,2004
   5      Free Software Foundation, Inc.
   6    This file is part of the GNU C Library.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2, or (at your option)
  11    any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License along
  19    with this program; if not, write to the Free Software Foundation,
  20    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  21 \f
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #ifdef _LIBC
  27 # include <getopt.h>
  28 #else
  29 # include "getopt.h"
  30 #endif
  31 #include "getopt_int.h"
  32
  33 #include <stdio.h>
  34
  35 /* This needs to come after some library #include
  36    to get __GNU_LIBRARY__ defined.  */
  37 #ifdef __GNU_LIBRARY__
  38 #include <stdlib.h>
  39 #endif
  40
  41 #ifndef NULL
  42 #define NULL 0
  43 #endif
  44
  45 int
  46 getopt_long (int argc, char *const *argv, const char *options,
  47              const struct option *long_options, int *opt_index)
  48 {
  49   return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
  50 }
  51
  52 int
  53 _getopt_long_r (int argc, char *const *argv, const char *options,
  54                 const struct option *long_options, int *opt_index,
  55                 struct _getopt_data *d)
  56 {
  57   return _getopt_internal_r (argc, argv, options, long_options, opt_index,
  58                              0, d);
  59 }
  60
  61 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
  62    If an option that starts with '-' (not '--') doesn't match a long option,
  63    but does match a short option, it is parsed as a short option
  64    instead.  */
  65
  66 int
  67 getopt_long_only (int argc, char *const *argv, const char *options,
  68                   const struct option *long_options, int *opt_index)
  69 {
  70   return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
  71 }
  72
  73 int
  74 _getopt_long_only_r (int argc, char *const *argv, const char *options,
  75                      const struct option *long_options, int *opt_index,
  76                      struct _getopt_data *d)
  77 {
  78   return _getopt_internal_r (argc, argv, options, long_options, opt_index,
  79                              1, d);
  80 }
  81
  82 \f
  83 #ifdef TEST
  84
  85 #include <stdio.h>
  86
  87 int
  88 main (int argc, char **argv)
  89 {
  90   int c;
  91   int digit_optind = 0;
  92
  93   while (1)
  94     {
  95       int this_option_optind = optind ? optind : 1;
  96       int option_index = 0;
  97       static struct option long_options[] =
  98       {
  99         {"add", 1, 0, 0},
 100         {"append", 0, 0, 0},
 101         {"delete", 1, 0, 0},
 102         {"verbose", 0, 0, 0},
 103         {"create", 0, 0, 0},
 104         {"file", 1, 0, 0},
 105         {0, 0, 0, 0}
 106       };
 107
 108       c = getopt_long (argc, argv, "abc:d:0123456789",
 109                        long_options, &option_index);
 110       if (c == -1)
 111         break;
 112
 113       switch (c)
 114         {
 115         case 0:
 116           printf ("option %s", long_options[option_index].name);
 117           if (optarg)
 118             printf (" with arg %s", optarg);
 119           printf ("\n");
 120           break;
 121
 122         case '0':
 123         case '1':
 124         case '2':
 125         case '3':
 126         case '4':
 127         case '5':
 128         case '6':
 129         case '7':
 130         case '8':
 131         case '9':
 132           if (digit_optind != 0 && digit_optind != this_option_optind)
 133             printf ("digits occur in two different argv-elements.\n");
 134           digit_optind = this_option_optind;
 135           printf ("option %c\n", c);
 136           break;
 137
 138         case 'a':
 139           printf ("option a\n");
 140           break;
 141
 142         case 'b':
 143           printf ("option b\n");
 144           break;
 145
 146         case 'c':
 147           printf ("option c with value `%s'\n", optarg);
 148           break;
 149
 150         case 'd':
 151           printf ("option d with value `%s'\n", optarg);
 152           break;
 153
 154         case '?':
 155           break;
 156
 157         default:
 158           printf ("?? getopt returned character code 0%o ??\n", c);
 159         }
 160     }
 161
 162   if (optind < argc)
 163     {
 164       printf ("non-option ARGV-elements: ");
 165       while (optind < argc)
 166         printf ("%s ", argv[optind++]);
 167       printf ("\n");
 168     }
 169
 170   exit (0);
 171 }
 172
 173 #endif /* TEST */