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, 2002
   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
  17    along 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 #include "getopt.h"
  25 #include <stdio.h>
  26
  27 /* Comment out all this code if we are using the GNU C Library, and are not
  28    actually compiling the library itself.  This code is part of the GNU C
  29    Library, but also included in many other GNU distributions.  Compiling
  30    and linking in this code is a waste when using the GNU C library
  31    (especially if it is a shared library).  Rather than having every GNU
  32    program understand `configure --with-gnu-libc' and omit the object files,
  33    it is simpler to just do this in the source for each such file.  */
  34
  35 #define GETOPT_INTERFACE_VERSION 2
  36 #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
  37 #include <gnu-versions.h>
  38 #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
  39 #define ELIDE_CODE
  40 #endif
  41 #endif
  42
  43 #ifndef ELIDE_CODE
  44
  45
  46 /* This needs to come after some library #include
  47    to get __GNU_LIBRARY__ defined.  */
  48 #ifdef __GNU_LIBRARY__
  49 #include <stdlib.h>
  50 #endif
  51
  52 #ifndef NULL
  53 #define NULL 0
  54 #endif
  55
  56 int
  57 getopt_long (argc, argv, options, long_options, opt_index)
  58      int argc;
  59      char *const *argv;
  60      const char *options;
  61      const struct option *long_options;
  62      int *opt_index;
  63 {
  64   return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
  65 }
  66
  67 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
  68    If an option that starts with '-' (not '--') doesn't match a long option,
  69    but does match a short option, it is parsed as a short option
  70    instead.  */
  71
  72 int
  73 getopt_long_only (argc, argv, options, long_options, opt_index)
  74      int argc;
  75      char *const *argv;
  76      const char *options;
  77      const struct option *long_options;
  78      int *opt_index;
  79 {
  80   return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
  81 }
  82
  83
  84 #endif  /* Not ELIDE_CODE.  */
  85 \f
  86 #ifdef TEST
  87
  88 #include <stdio.h>
  89
  90 int
  91 main (argc, argv)
  92      int argc;
  93      char **argv;
  94 {
  95   int c;
  96   int digit_optind = 0;
  97
  98   while (1)
  99     {
 100       int this_option_optind = optind ? optind : 1;
 101       int option_index = 0;
 102       static struct option long_options[] =
 103       {
 104         {"add", 1, 0, 0},
 105         {"append", 0, 0, 0},
 106         {"delete", 1, 0, 0},
 107         {"verbose", 0, 0, 0},
 108         {"create", 0, 0, 0},
 109         {"file", 1, 0, 0},
 110         {0, 0, 0, 0}
 111       };
 112
 113       c = getopt_long (argc, argv, "abc:d:0123456789",
 114                        long_options, &option_index);
 115       if (c == -1)
 116         break;
 117
 118       switch (c)
 119         {
 120         case 0:
 121           printf ("option %s", long_options[option_index].name);
 122           if (optarg)
 123             printf (" with arg %s", optarg);
 124           printf ("\n");
 125           break;
 126
 127         case '0':
 128         case '1':
 129         case '2':
 130         case '3':
 131         case '4':
 132         case '5':
 133         case '6':
 134         case '7':
 135         case '8':
 136         case '9':
 137           if (digit_optind != 0 && digit_optind != this_option_optind)
 138             printf ("digits occur in two different argv-elements.\n");
 139           digit_optind = this_option_optind;
 140           printf ("option %c\n", c);
 141           break;
 142
 143         case 'a':
 144           printf ("option a\n");
 145           break;
 146
 147         case 'b':
 148           printf ("option b\n");
 149           break;
 150
 151         case 'c':
 152           printf ("option c with value `%s'\n", optarg);
 153           break;
 154
 155         case 'd':
 156           printf ("option d with value `%s'\n", optarg);
 157           break;
 158
 159         case '?':
 160           break;
 161
 162         default:
 163           printf ("?? getopt returned character code 0%o ??\n", c);
 164         }
 165     }
 166
 167   if (optind < argc)
 168     {
 169       printf ("non-option ARGV-elements: ");
 170       while (optind < argc)
 171         printf ("%s ", argv[optind++]);
 172       printf ("\n");
 173     }
 174
 175   exit (0);
 176 }
 177
 178 #endif /* TEST */