gnu/dist/groff/src/libs/libgroff/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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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 *__getopt_argv_const *argv, const char *options,
  47              const struct option *long_options, int *opt_index)
  48 {
  49   return _getopt_internal (argc, (char **) argv, options, long_options,
  50                            opt_index, 0, 0);
  51 }
  52
  53 int
  54 _getopt_long_r (int argc, char **argv, const char *options,
  55                 const struct option *long_options, int *opt_index,
  56                 struct _getopt_data *d)
  57 {
  58   return _getopt_internal_r (argc, argv, options, long_options, opt_index,
  59                              0, 0, d);
  60 }
  61
  62 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
  63    If an option that starts with '-' (not '--') doesn't match a long option,
  64    but does match a short option, it is parsed as a short option
  65    instead.  */
  66
  67 int
  68 getopt_long_only (int argc, char *__getopt_argv_const *argv,
  69                   const char *options,
  70                   const struct option *long_options, int *opt_index)
  71 {
  72   return _getopt_internal (argc, (char **) argv, options, long_options,
  73                            opt_index, 1, 0);
  74 }
  75
  76 int
  77 _getopt_long_only_r (int argc, char **argv, const char *options,
  78                      const struct option *long_options, int *opt_index,
  79                      struct _getopt_data *d)
  80 {
  81   return _getopt_internal_r (argc, argv, options, long_options, opt_index,
  82                              1, 0, d);
  83 }
  84
  85 \f
  86 #ifdef TEST
  87
  88 #include <stdio.h>
  89
  90 int
  91 main (int argc, char **argv)
  92 {
  93   int c;
  94   int digit_optind = 0;
  95
  96   while (1)
  97     {
  98       int this_option_optind = optind ? optind : 1;
  99       int option_index = 0;
 100       static struct option long_options[] =
 101       {
 102         {"add", 1, 0, 0},
 103         {"append", 0, 0, 0},
 104         {"delete", 1, 0, 0},
 105         {"verbose", 0, 0, 0},
 106         {"create", 0, 0, 0},
 107         {"file", 1, 0, 0},
 108         {0, 0, 0, 0}
 109       };
 110
 111       c = getopt_long (argc, argv, "abc:d:0123456789",
 112                        long_options, &option_index);
 113       if (c == -1)
 114         break;
 115
 116       switch (c)
 117         {
 118         case 0:
 119           printf ("option %s", long_options[option_index].name);
 120           if (optarg)
 121             printf (" with arg %s", optarg);
 122           printf ("\n");
 123           break;
 124
 125         case '0':
 126         case '1':
 127         case '2':
 128         case '3':
 129         case '4':
 130         case '5':
 131         case '6':
 132         case '7':
 133         case '8':
 134         case '9':
 135           if (digit_optind != 0 && digit_optind != this_option_optind)
 136             printf ("digits occur in two different argv-elements.\n");
 137           digit_optind = this_option_optind;
 138           printf ("option %c\n", c);
 139           break;
 140
 141         case 'a':
 142           printf ("option a\n");
 143           break;
 144
 145         case 'b':
 146           printf ("option b\n");
 147           break;
 148
 149         case 'c':
 150           printf ("option c with value `%s'\n", optarg);
 151           break;
 152
 153         case 'd':
 154           printf ("option d with value `%s'\n", optarg);
 155           break;
 156
 157         case '?':
 158           break;
 159
 160         default:
 161           printf ("?? getopt returned character code 0%o ??\n", c);
 162         }
 163     }
 164
 165   if (optind < argc)
 166     {
 167       printf ("non-option ARGV-elements: ");
 168       while (optind < argc)
 169         printf ("%s ", argv[optind++]);
 170       printf ("\n");
 171     }
 172
 173   exit (0);
 174 }
 175
 176 #endif /* TEST */