posix/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 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA.  */
  19 \f
  20 #ifdef HAVE_CONFIG_H
  21 #include <config.h>
  22 #endif
  23
  24 #include "getopt.h"
  25
  26 #if !defined (__STDC__) || !__STDC__
  27 /* This is a separate conditional since some stdc systems
  28    reject `defined (const)'.  */
  29 #ifndef const
  30 #define const
  31 #endif
  32 #endif
  33
  34 #include <stdio.h>
  35
  36 /* Comment out all this code if we are using the GNU C Library, and are not
  37    actually compiling the library itself.  This code is part of the GNU C
  38    Library, but also included in many other GNU distributions.  Compiling
  39    and linking in this code is a waste when using the GNU C library
  40    (especially if it is a shared library).  Rather than having every GNU
  41    program understand `configure --with-gnu-libc' and omit the object files,
  42    it is simpler to just do this in the source for each such file.  */
  43
  44 #define GETOPT_INTERFACE_VERSION 2
  45 #if !defined (_LIBC) && defined (__GLIBC__) && __GLIBC__ >= 2
  46 #include <gnu-versions.h>
  47 #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
  48 #define ELIDE_CODE
  49 #endif
  50 #endif
  51
  52 #ifndef ELIDE_CODE
  53
  54
  55 /* This needs to come after some library #include
  56    to get __GNU_LIBRARY__ defined.  */
  57 #ifdef __GNU_LIBRARY__
  58 #include <stdlib.h>
  59 #endif
  60
  61 #ifndef NULL
  62 #define NULL 0
  63 #endif
  64
  65 int
  66 getopt_long (argc, argv, options, long_options, opt_index)
  67      int argc;
  68      char *const *argv;
  69      const char *options;
  70      const struct option *long_options;
  71      int *opt_index;
  72 {
  73   return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
  74 }
  75
  76 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
  77    If an option that starts with '-' (not '--') doesn't match a long option,
  78    but does match a short option, it is parsed as a short option
  79    instead.  */
  80
  81 int
  82 getopt_long_only (argc, argv, options, long_options, opt_index)
  83      int argc;
  84      char *const *argv;
  85      const char *options;
  86      const struct option *long_options;
  87      int *opt_index;
  88 {
  89   return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
  90 }
  91
  92
  93 #endif  /* Not ELIDE_CODE.  */
  94 \f
  95 #ifdef TEST
  96
  97 #include <stdio.h>
  98
  99 int
 100 main (argc, argv)
 101      int argc;
 102      char **argv;
 103 {
 104   int c;
 105   int digit_optind = 0;
 106
 107   while (1)
 108     {
 109       int this_option_optind = optind ? optind : 1;
 110       int option_index = 0;
 111       static struct option long_options[] =
 112       {
 113         {"add", 1, 0, 0},
 114         {"append", 0, 0, 0},
 115         {"delete", 1, 0, 0},
 116         {"verbose", 0, 0, 0},
 117         {"create", 0, 0, 0},
 118         {"file", 1, 0, 0},
 119         {0, 0, 0, 0}
 120       };
 121
 122       c = getopt_long (argc, argv, "abc:d:0123456789",
 123                        long_options, &option_index);
 124       if (c == -1)
 125         break;
 126
 127       switch (c)
 128         {
 129         case 0:
 130           printf ("option %s", long_options[option_index].name);
 131           if (optarg)
 132             printf (" with arg %s", optarg);
 133           printf ("\n");
 134           break;
 135
 136         case '0':
 137         case '1':
 138         case '2':
 139         case '3':
 140         case '4':
 141         case '5':
 142         case '6':
 143         case '7':
 144         case '8':
 145         case '9':
 146           if (digit_optind != 0 && digit_optind != this_option_optind)
 147             printf ("digits occur in two different argv-elements.\n");
 148           digit_optind = this_option_optind;
 149           printf ("option %c\n", c);
 150           break;
 151
 152         case 'a':
 153           printf ("option a\n");
 154           break;
 155
 156         case 'b':
 157           printf ("option b\n");
 158           break;
 159
 160         case 'c':
 161           printf ("option c with value `%s'\n", optarg);
 162           break;
 163
 164         case 'd':
 165           printf ("option d with value `%s'\n", optarg);
 166           break;
 167
 168         case '?':
 169           break;
 170
 171         default:
 172           printf ("?? getopt returned character code 0%o ??\n", c);
 173         }
 174     }
 175
 176   if (optind < argc)
 177     {
 178       printf ("non-option ARGV-elements: ");
 179       while (optind < argc)
 180         printf ("%s ", argv[optind++]);
 181       printf ("\n");
 182     }
 183
 184   exit (0);
 185 }
 186
 187 #endif /* TEST */