lib/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    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library 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 GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20 #include <config.h>
  21 #if !defined(HAVE_GETOPT_H) || !defined(HAVE_GETOPT_LONG)
  22 \f
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #ifdef _LIBC
  28 # include <getopt.h>
  29 #else
  30 # include "getopt.h"
  31 #endif
  32
  33 #if !defined __STDC__ || !__STDC__
  34 /* This is a separate conditional since some stdc systems
  35    reject `defined (const)'.  */
  36 #ifndef const
  37 #define const
  38 #endif
  39 #endif
  40
  41 #include <stdio.h>
  42
  43 /* Comment out all this code if we are using the GNU C Library, and are not
  44    actually compiling the library itself.  This code is part of the GNU C
  45    Library, but also included in many other GNU distributions.  Compiling
  46    and linking in this code is a waste when using the GNU C library
  47    (especially if it is a shared library).  Rather than having every GNU
  48    program understand `configure --with-gnu-libc' and omit the object files,
  49    it is simpler to just do this in the source for each such file.  */
  50
  51 #define GETOPT_INTERFACE_VERSION 2
  52 #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
  53 #include <gnu-versions.h>
  54 #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
  55 #define ELIDE_CODE
  56 #endif
  57 #endif
  58
  59 /* Always compile for Sane */
  60 #if defined ELIDE_CODE
  61 #undef ELIDE_CODE
  62 #endif
  63
  64 #ifndef ELIDE_CODE
  65
  66
  67 /* This needs to come after some library #include
  68    to get __GNU_LIBRARY__ defined.  */
  69 #ifdef __GNU_LIBRARY__
  70 #include <stdlib.h>
  71 #endif
  72
  73 #ifndef NULL
  74 #define NULL 0
  75 #endif
  76
  77 int
  78 getopt_long (argc, argv, options, long_options, opt_index)
  79      int argc;
  80      char *const *argv;
  81      const char *options;
  82      const struct option *long_options;
  83      int *opt_index;
  84 {
  85   return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
  86 }
  87
  88 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
  89    If an option that starts with '-' (not '--') doesn't match a long option,
  90    but does match a short option, it is parsed as a short option
  91    instead.  */
  92
  93 int
  94 getopt_long_only (argc, argv, options, long_options, opt_index)
  95      int argc;
  96      char *const *argv;
  97      const char *options;
  98      const struct option *long_options;
  99      int *opt_index;
 100 {
 101   return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
 102 }
 103
 104 # ifdef _LIBC
 105 libc_hidden_def (getopt_long)
 106 libc_hidden_def (getopt_long_only)
 107 # endif
 108
 109 #endif  /* Not ELIDE_CODE.  */
 110 \f
 111 #ifdef TEST
 112
 113 #include <stdio.h>
 114
 115 int
 116 main (argc, argv)
 117      int argc;
 118      char **argv;
 119 {
 120   int c;
 121   int digit_optind = 0;
 122
 123   while (1)
 124     {
 125       int this_option_optind = optind ? optind : 1;
 126       int option_index = 0;
 127       static struct option long_options[] =
 128       {
 129         {"add", 1, 0, 0},
 130         {"append", 0, 0, 0},
 131         {"delete", 1, 0, 0},
 132         {"verbose", 0, 0, 0},
 133         {"create", 0, 0, 0},
 134         {"file", 1, 0, 0},
 135         {0, 0, 0, 0}
 136       };
 137
 138       c = getopt_long (argc, argv, "abc:d:0123456789",
 139                        long_options, &option_index);
 140       if (c == -1)
 141         break;
 142
 143       switch (c)
 144         {
 145         case 0:
 146           printf ("option %s", long_options[option_index].name);
 147           if (optarg)
 148             printf (" with arg %s", optarg);
 149           printf ("\n");
 150           break;
 151
 152         case '0':
 153         case '1':
 154         case '2':
 155         case '3':
 156         case '4':
 157         case '5':
 158         case '6':
 159         case '7':
 160         case '8':
 161         case '9':
 162           if (digit_optind != 0 && digit_optind != this_option_optind)
 163             printf ("digits occur in two different argv-elements.\n");
 164           digit_optind = this_option_optind;
 165           printf ("option %c\n", c);
 166           break;
 167
 168         case 'a':
 169           printf ("option a\n");
 170           break;
 171
 172         case 'b':
 173           printf ("option b\n");
 174           break;
 175
 176         case 'c':
 177           printf ("option c with value `%s'\n", optarg);
 178           break;
 179
 180         case 'd':
 181           printf ("option d with value `%s'\n", optarg);
 182           break;
 183
 184         case '?':
 185           break;
 186
 187         default:
 188           printf ("?? getopt returned character code 0%o ??\n", c);
 189         }
 190     }
 191
 192   if (optind < argc)
 193     {
 194       printf ("non-option ARGV-elements: ");
 195       while (optind < argc)
 196         printf ("%s ", argv[optind++]);
 197       printf ("\n");
 198     }
 199
 200   exit (0);
 201 }
 202
 203 #endif /* TEST */
 204 #endif /* HAVE_GETOPT_LONG */