lib/getopt1.c

   1 /* getopt_long and getopt_long_only entry points for GNU getopt.
   2
   3    Copyright (C) 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1996,
   4    1997, 1998, 2003 Free Software Foundation, Inc.
   5
   6    This file is part of the GNU C Library.
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2, or (at your option)
  11    any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License along
  19    with this program; if not, write to the Free Software Foundation,
  20    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  21 \f
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #ifdef _LIBC
  27 # include <getopt.h>
  28 #else
  29 # include "getopt.h"
  30 #endif
  31
  32 #include <stdio.h>
  33
  34 /* Comment out all this code if we are using the GNU C Library, and are not
  35    actually compiling the library itself.  This code is part of the GNU C
  36    Library, but also included in many other GNU distributions.  Compiling
  37    and linking in this code is a waste when using the GNU C library
  38    (especially if it is a shared library).  Rather than having every GNU
  39    program understand `configure --with-gnu-libc' and omit the object files,
  40    it is simpler to just do this in the source for each such file.  */
  41
  42 #define GETOPT_INTERFACE_VERSION 2
  43 #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
  44 #include <gnu-versions.h>
  45 #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
  46 #define ELIDE_CODE
  47 #endif
  48 #endif
  49
  50 #ifndef ELIDE_CODE
  51
  52
  53 /* This needs to come after some library #include
  54    to get __GNU_LIBRARY__ defined.  */
  55 #ifdef __GNU_LIBRARY__
  56 #include <stdlib.h>
  57 #endif
  58
  59 #ifndef NULL
  60 #define NULL 0
  61 #endif
  62
  63 int
  64 getopt_long (int argc,
  65              char *const *argv,
  66              const char *options,
  67              const struct option *long_options,
  68              int *opt_index)
  69 {
  70   return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
  71 }
  72
  73 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
  74    If an option that starts with '-' (not '--') doesn't match a long option,
  75    but does match a short option, it is parsed as a short option
  76    instead.  */
  77
  78 int
  79 getopt_long_only (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, 1);
  86 }
  87
  88 # ifdef _LIBC
  89 libc_hidden_def (getopt_long)
  90 libc_hidden_def (getopt_long_only)
  91 # endif
  92
  93 #endif  /* Not ELIDE_CODE.  */
  94 \f
  95 #ifdef TEST
  96
  97 #include <stdio.h>
  98
  99 int
 100 main (int argc, char **argv)
 101 {
 102   int c;
 103   int digit_optind = 0;
 104
 105   while (1)
 106     {
 107       int this_option_optind = optind ? optind : 1;
 108       int option_index = 0;
 109       static struct option long_options[] =
 110       {
 111         {"add", 1, 0, 0},
 112         {"append", 0, 0, 0},
 113         {"delete", 1, 0, 0},
 114         {"verbose", 0, 0, 0},
 115         {"create", 0, 0, 0},
 116         {"file", 1, 0, 0},
 117         {0, 0, 0, 0}
 118       };
 119
 120       c = getopt_long (argc, argv, "abc:d:0123456789",
 121                        long_options, &option_index);
 122       if (c == -1)
 123         break;
 124
 125       switch (c)
 126         {
 127         case 0:
 128           printf ("option %s", long_options[option_index].name);
 129           if (optarg)
 130             printf (" with arg %s", optarg);
 131           printf ("\n");
 132           break;
 133
 134         case '0':
 135         case '1':
 136         case '2':
 137         case '3':
 138         case '4':
 139         case '5':
 140         case '6':
 141         case '7':
 142         case '8':
 143         case '9':
 144           if (digit_optind != 0 && digit_optind != this_option_optind)
 145             printf ("digits occur in two different argv-elements.\n");
 146           digit_optind = this_option_optind;
 147           printf ("option %c\n", c);
 148           break;
 149
 150         case 'a':
 151           printf ("option a\n");
 152           break;
 153
 154         case 'b':
 155           printf ("option b\n");
 156           break;
 157
 158         case 'c':
 159           printf ("option c with value `%s'\n", optarg);
 160           break;
 161
 162         case 'd':
 163           printf ("option d with value `%s'\n", optarg);
 164           break;
 165
 166         case '?':
 167           break;
 168
 169         default:
 170           printf ("?? getopt returned character code 0%o ??\n", c);
 171         }
 172     }
 173
 174   if (optind < argc)
 175     {
 176       printf ("non-option ARGV-elements: ");
 177       while (optind < argc)
 178         printf ("%s ", argv[optind++]);
 179       printf ("\n");
 180     }
 181
 182   exit (0);
 183 }
 184
 185 #endif /* TEST */