gnu/dist/diffutils/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
   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
  19    along 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 #include "getopt.h"
  27
  28 #if !defined __STDC__ || !__STDC__
  29 /* This is a separate conditional since some stdc systems
  30    reject `defined (const)'.  */
  31 #ifndef const
  32 #define const
  33 #endif
  34 #endif
  35
  36 #include <stdio.h>
  37
  38 /* Comment out all this code if we are using the GNU C Library, and are not
  39    actually compiling the library itself.  This code is part of the GNU C
  40    Library, but also included in many other GNU distributions.  Compiling
  41    and linking in this code is a waste when using the GNU C library
  42    (especially if it is a shared library).  Rather than having every GNU
  43    program understand `configure --with-gnu-libc' and omit the object files,
  44    it is simpler to just do this in the source for each such file.  */
  45
  46 #define GETOPT_INTERFACE_VERSION 2
  47 #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
  48 #include <gnu-versions.h>
  49 #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
  50 #define ELIDE_CODE
  51 #endif
  52 #endif
  53
  54 #ifndef ELIDE_CODE
  55
  56
  57 /* This needs to come after some library #include
  58    to get __GNU_LIBRARY__ defined.  */
  59 #ifdef __GNU_LIBRARY__
  60 #include <stdlib.h>
  61 #endif
  62
  63 #ifndef NULL
  64 #define NULL 0
  65 #endif
  66
  67 int
  68 getopt_long (argc, argv, options, long_options, opt_index)
  69      int argc;
  70      char *const *argv;
  71      const char *options;
  72      const struct option *long_options;
  73      int *opt_index;
  74 {
  75   return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
  76 }
  77
  78 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
  79    If an option that starts with '-' (not '--') doesn't match a long option,
  80    but does match a short option, it is parsed as a short option
  81    instead.  */
  82
  83 int
  84 getopt_long_only (argc, argv, options, long_options, opt_index)
  85      int argc;
  86      char *const *argv;
  87      const char *options;
  88      const struct option *long_options;
  89      int *opt_index;
  90 {
  91   return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
  92 }
  93
  94
  95 #endif  /* Not ELIDE_CODE.  */
  96 \f
  97 #ifdef TEST
  98
  99 #include <stdio.h>
 100
 101 int
 102 main (argc, argv)
 103      int argc;
 104      char **argv;
 105 {
 106   int c;
 107   int digit_optind = 0;
 108
 109   while (1)
 110     {
 111       int this_option_optind = optind ? optind : 1;
 112       int option_index = 0;
 113       static struct option long_options[] =
 114       {
 115         {"add", 1, 0, 0},
 116         {"append", 0, 0, 0},
 117         {"delete", 1, 0, 0},
 118         {"verbose", 0, 0, 0},
 119         {"create", 0, 0, 0},
 120         {"file", 1, 0, 0},
 121         {0, 0, 0, 0}
 122       };
 123
 124       c = getopt_long (argc, argv, "abc:d:0123456789",
 125                        long_options, &option_index);
 126       if (c == -1)
 127         break;
 128
 129       switch (c)
 130         {
 131         case 0:
 132           printf ("option %s", long_options[option_index].name);
 133           if (optarg)
 134             printf (" with arg %s", optarg);
 135           printf ("\n");
 136           break;
 137
 138         case '0':
 139         case '1':
 140         case '2':
 141         case '3':
 142         case '4':
 143         case '5':
 144         case '6':
 145         case '7':
 146         case '8':
 147         case '9':
 148           if (digit_optind != 0 && digit_optind != this_option_optind)
 149             printf ("digits occur in two different argv-elements.\n");
 150           digit_optind = this_option_optind;
 151           printf ("option %c\n", c);
 152           break;
 153
 154         case 'a':
 155           printf ("option a\n");
 156           break;
 157
 158         case 'b':
 159           printf ("option b\n");
 160           break;
 161
 162         case 'c':
 163           printf ("option c with value `%s'\n", optarg);
 164           break;
 165
 166         case 'd':
 167           printf ("option d with value `%s'\n", optarg);
 168           break;
 169
 170         case '?':
 171           break;
 172
 173         default:
 174           printf ("?? getopt returned character code 0%o ??\n", c);
 175         }
 176     }
 177
 178   if (optind < argc)
 179     {
 180       printf ("non-option ARGV-elements: ");
 181       while (optind < argc)
 182         printf ("%s ", argv[optind++]);
 183       printf ("\n");
 184     }
 185
 186   exit (0);
 187 }
 188
 189 #endif /* TEST */