getopt1.c

   1 /* getopt_long and getopt_long_only entry points for GNU getopt.
   2    Copyright (C) 1987,88,89,90,91,92,93,94,96,97,98
   3      Free Software Foundation, Inc.
   4
   5    NOTE: The canonical source of this file is maintained with the GNU C Library.
   6    Bugs can be reported to bug-glibc@prep.ai.mit.edu.
   7
   8    This program is free software; you can redistribute it and/or modify it
   9    under the terms of the GNU General Public License as published by the
  10    Free Software Foundation; either version 2, or (at your option) any
  11    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
  20    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  21    USA.  */
  22 \f
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include "getopt.h"
  28
  29 #if !defined __STDC__ || !__STDC__
  30 /* This is a separate conditional since some stdc systems
  31    reject `defined (const)'.  */
  32 #ifndef const
  33 #define const
  34 #endif
  35 #endif
  36
  37 #include <stdio.h>
  38
  39 /* Comment out all this code if we are using the GNU C Library, and are not
  40    actually compiling the library itself.  This code is part of the GNU C
  41    Library, but also included in many other GNU distributions.  Compiling
  42    and linking in this code is a waste when using the GNU C library
  43    (especially if it is a shared library).  Rather than having every GNU
  44    program understand `configure --with-gnu-libc' and omit the object files,
  45    it is simpler to just do this in the source for each such file.  */
  46
  47 #define GETOPT_INTERFACE_VERSION 2
  48 #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
  49 #include <gnu-versions.h>
  50 #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
  51 #define ELIDE_CODE
  52 #endif
  53 #endif
  54
  55 #ifndef ELIDE_CODE
  56
  57
  58 /* This needs to come after some library #include
  59    to get __GNU_LIBRARY__ defined.  */
  60 #ifdef __GNU_LIBRARY__
  61 #include <stdlib.h>
  62 #endif
  63
  64 #ifndef NULL
  65 #define NULL 0
  66 #endif
  67
  68 int
  69 getopt_long (argc, argv, options, long_options, opt_index)
  70      int argc;
  71      char *const *argv;
  72      const char *options;
  73      const struct option *long_options;
  74      int *opt_index;
  75 {
  76   return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
  77 }
  78
  79 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
  80    If an option that starts with '-' (not '--') doesn't match a long option,
  81    but does match a short option, it is parsed as a short option
  82    instead.  */
  83
  84 int
  85 getopt_long_only (argc, argv, options, long_options, opt_index)
  86      int argc;
  87      char *const *argv;
  88      const char *options;
  89      const struct option *long_options;
  90      int *opt_index;
  91 {
  92   return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
  93 }
  94
  95
  96 #endif  /* Not ELIDE_CODE.  */
  97 \f
  98 #ifdef TEST
  99
 100 #include <stdio.h>
 101
 102 int
 103 main (argc, argv)
 104      int argc;
 105      char **argv;
 106 {
 107   int c;
 108   int digit_optind = 0;
 109
 110   while (1)
 111     {
 112       int this_option_optind = optind ? optind : 1;
 113       int option_index = 0;
 114       static struct option long_options[] =
 115       {
 116         {"add", 1, 0, 0},
 117         {"append", 0, 0, 0},
 118         {"delete", 1, 0, 0},
 119         {"verbose", 0, 0, 0},
 120         {"create", 0, 0, 0},
 121         {"file", 1, 0, 0},
 122         {0, 0, 0, 0}
 123       };
 124
 125       c = getopt_long (argc, argv, "abc:d:0123456789",
 126                        long_options, &option_index);
 127       if (c == -1)
 128         break;
 129
 130       switch (c)
 131         {
 132         case 0:
 133           printf ("option %s", long_options[option_index].name);
 134           if (optarg)
 135             printf (" with arg %s", optarg);
 136           printf ("\n");
 137           break;
 138
 139         case '0':
 140         case '1':
 141         case '2':
 142         case '3':
 143         case '4':
 144         case '5':
 145         case '6':
 146         case '7':
 147         case '8':
 148         case '9':
 149           if (digit_optind != 0 && digit_optind != this_option_optind)
 150             printf ("digits occur in two different argv-elements.\n");
 151           digit_optind = this_option_optind;
 152           printf ("option %c\n", c);
 153           break;
 154
 155         case 'a':
 156           printf ("option a\n");
 157           break;
 158
 159         case 'b':
 160           printf ("option b\n");
 161           break;
 162
 163         case 'c':
 164           printf ("option c with value `%s'\n", optarg);
 165           break;
 166
 167         case 'd':
 168           printf ("option d with value `%s'\n", optarg);
 169           break;
 170
 171         case '?':
 172           break;
 173
 174         default:
 175           printf ("?? getopt returned character code 0%o ??\n", c);
 176         }
 177     }
 178
 179   if (optind < argc)
 180     {
 181       printf ("non-option ARGV-elements: ");
 182       while (optind < argc)
 183         printf ("%s ", argv[optind++]);
 184       printf ("\n");
 185     }
 186
 187   exit (0);
 188 }
 189
 190 #endif /* TEST */