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 Free Software Foundation, Inc.
   3
   4    the C library, however.  The master source lives in /gd/gnu/lib.
   5
   6 NOTE: The canonical source of this file is maintained with the GNU C Library.
   7 Bugs can be reported to bug-glibc@prep.ai.mit.edu.
   8
   9 This program is free software; you can redistribute it and/or modify it
  10 under the terms of the GNU General Public License as published by the
  11 Free Software Foundation; either version 2, or (at your option) any
  12 later version.
  13
  14 This program is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 GNU General Public License for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with this program; if not, write to the Free Software
  21 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  22 USA.  */
  23 \f
  24 #ifdef HAVE_CONFIG_H
  25 #include <config.h>
  26 #endif
  27
  28 #include "getopt.h"
  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
  97 #endif  /* Not ELIDE_CODE.  */
  98 \f
  99 #ifdef TEST
 100
 101 #include <stdio.h>
 102
 103 int
 104 main (argc, argv)
 105      int argc;
 106      char **argv;
 107 {
 108   int c;
 109   int digit_optind = 0;
 110
 111   while (1)
 112     {
 113       int this_option_optind = optind ? optind : 1;
 114       int option_index = 0;
 115       static struct option long_options[] =
 116       {
 117         {"add", 1, 0, 0},
 118         {"append", 0, 0, 0},
 119         {"delete", 1, 0, 0},
 120         {"verbose", 0, 0, 0},
 121         {"create", 0, 0, 0},
 122         {"file", 1, 0, 0},
 123         {0, 0, 0, 0}
 124       };
 125
 126       c = getopt_long (argc, argv, "abc:d:0123456789",
 127                        long_options, &option_index);
 128       if (c == -1)
 129         break;
 130
 131       switch (c)
 132         {
 133         case 0:
 134           printf ("option %s", long_options[option_index].name);
 135           if (optarg)
 136             printf (" with arg %s", optarg);
 137           printf ("\n");
 138           break;
 139
 140         case '0':
 141         case '1':
 142         case '2':
 143         case '3':
 144         case '4':
 145         case '5':
 146         case '6':
 147         case '7':
 148         case '8':
 149         case '9':
 150           if (digit_optind != 0 && digit_optind != this_option_optind)
 151             printf ("digits occur in two different argv-elements.\n");
 152           digit_optind = this_option_optind;
 153           printf ("option %c\n", c);
 154           break;
 155
 156         case 'a':
 157           printf ("option a\n");
 158           break;
 159
 160         case 'b':
 161           printf ("option b\n");
 162           break;
 163
 164         case 'c':
 165           printf ("option c with value `%s'\n", optarg);
 166           break;
 167
 168         case 'd':
 169           printf ("option d with value `%s'\n", optarg);
 170           break;
 171
 172         case '?':
 173           break;
 174
 175         default:
 176           printf ("?? getopt returned character code 0%o ??\n", c);
 177         }
 178     }
 179
 180   if (optind < argc)
 181     {
 182       printf ("non-option ARGV-elements: ");
 183       while (optind < argc)
 184         printf ("%s ", argv[optind++]);
 185       printf ("\n");
 186     }
 187
 188   exit (0);
 189 }
 190
 191 #endif /* TEST */