code.delx.au - gnu-emacs/blob - lib-src/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    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 2, or (at your option)
   9    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 along
  17    with this program; if not, write to the Free Software Foundation,
  18    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  19 \f
  20 #ifdef HAVE_CONFIG_H
  21 #include <config.h>
  22 #endif
  23
  24 #ifdef _LIBC
  25 # include <getopt.h>
  26 #else
  27 # include "getopt.h"
  28 #endif
  29
  30 #if !defined __STDC__ || !__STDC__
  31 /* This is a separate conditional since some stdc systems
  32    reject `defined (const)'.  */
  33 #ifndef const
  34 #define const
  35 #endif
  36 #endif
  37
  38 #include <stdio.h>
  39
  40 /* Comment out all this code if we are using the GNU C Library, and are not
  41    actually compiling the library itself.  This code is part of the GNU C
  42    Library, but also included in many other GNU distributions.  Compiling
  43    and linking in this code is a waste when using the GNU C library
  44    (especially if it is a shared library).  Rather than having every GNU
  45    program understand `configure --with-gnu-libc' and omit the object files,
  46    it is simpler to just do this in the source for each such file.  */
  47
  48 #define GETOPT_INTERFACE_VERSION 2
  49 #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
  50 #include <gnu-versions.h>
  51 #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
  52 #define ELIDE_CODE
  53 #endif
  54 #endif
  55
  56 #ifndef ELIDE_CODE
  57
  58
  59 /* This needs to come after some library #include
  60    to get __GNU_LIBRARY__ defined.  */
  61 #ifdef __GNU_LIBRARY__
  62 #include <stdlib.h>
  63 #endif
  64
  65 #ifndef NULL
  66 #define NULL 0
  67 #endif
  68
  69 int
  70 getopt_long (argc, argv, options, long_options, opt_index)
  71      int argc;
  72      char *const *argv;
  73      const char *options;
  74      const struct option *long_options;
  75      int *opt_index;
  76 {
  77   return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
  78 }
  79
  80 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
  81    If an option that starts with '-' (not '--') doesn't match a long option,
  82    but does match a short option, it is parsed as a short option
  83    instead.  */
  84
  85 int
  86 getopt_long_only (argc, argv, options, long_options, opt_index)
  87      int argc;
  88      char *const *argv;
  89      const char *options;
  90      const struct option *long_options;
  91      int *opt_index;
  92 {
  93   return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
  94 }
  95
  96 # ifdef _LIBC
  97 libc_hidden_def (getopt_long)
  98 libc_hidden_def (getopt_long_only)
  99 # endif
 100
 101 #endif  /* Not ELIDE_CODE.  */
 102 \f
 103 #ifdef TEST
 104
 105 #include <stdio.h>
 106
 107 int
 108 main (argc, argv)
 109      int argc;
 110      char **argv;
 111 {
 112   int c;
 113   int digit_optind = 0;
 114
 115   while (1)
 116     {
 117       int this_option_optind = optind ? optind : 1;
 118       int option_index = 0;
 119       static struct option long_options[] =
 120       {
 121         {"add", 1, 0, 0},
 122         {"append", 0, 0, 0},
 123         {"delete", 1, 0, 0},
 124         {"verbose", 0, 0, 0},
 125         {"create", 0, 0, 0},
 126         {"file", 1, 0, 0},
 127         {0, 0, 0, 0}
 128       };
 129
 130       c = getopt_long (argc, argv, "abc:d:0123456789",
 131                        long_options, &option_index);
 132       if (c == -1)
 133         break;
 134
 135       switch (c)
 136         {
 137         case 0:
 138           printf ("option %s", long_options[option_index].name);
 139           if (optarg)
 140             printf (" with arg %s", optarg);
 141           printf ("\n");
 142           break;
 143
 144         case '0':
 145         case '1':
 146         case '2':
 147         case '3':
 148         case '4':
 149         case '5':
 150         case '6':
 151         case '7':
 152         case '8':
 153         case '9':
 154           if (digit_optind != 0 && digit_optind != this_option_optind)
 155             printf ("digits occur in two different argv-elements.\n");
 156           digit_optind = this_option_optind;
 157           printf ("option %c\n", c);
 158           break;
 159
 160         case 'a':
 161           printf ("option a\n");
 162           break;
 163
 164         case 'b':
 165           printf ("option b\n");
 166           break;
 167
 168         case 'c':
 169           printf ("option c with value `%s'\n", optarg);
 170           break;
 171
 172         case 'd':
 173           printf ("option d with value `%s'\n", optarg);
 174           break;
 175
 176         case '?':
 177           break;
 178
 179         default:
 180           printf ("?? getopt returned character code 0%o ??\n", c);
 181         }
 182     }
 183
 184   if (optind < argc)
 185     {
 186       printf ("non-option ARGV-elements: ");
 187       while (optind < argc)
 188         printf ("%s ", argv[optind++]);
 189       printf ("\n");
 190     }
 191
 192   exit (0);
 193 }
 194
 195 #endif /* TEST */
 196
 197 /* arch-tag: 28a5c558-b0c0-4bff-b5bc-e2e20291d4b6
 198    (do not change this comment) */