libiberty/getopt1.c

   1 /* getopt_long and getopt_long_only entry points for GNU getopt.
   2    Copyright (C) 1987,88,89,90,91,92,93,94,96,97,98,2005
   3      Free Software Foundation, Inc.
   4
   5    NOTE: This source is derived from an old version taken from the GNU C
   6    Library (glibc).
   7
   8    This program is free software; you can redistribute it and/or modify it
   9    under the terms of the GNU General Public License as published by the
  10    Free Software Foundation; either version 2, or (at your option) any
  11    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
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301,
  21    USA.  */
  22 \f
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #if !defined __STDC__ || !__STDC__
  28 /* This is a separate conditional since some stdc systems
  29    reject `defined (const)'.  */
  30 #ifndef const
  31 #define const
  32 #endif
  33 #endif
  34
  35 #include <stdio.h>
  36
  37 #include "getopt.h"
  38
  39 /* Comment out all this code if we are using the GNU C Library, and are not
  40    actually compiling the library itself.  This code is part of the GNU C
  41    Library, but also included in many other GNU distributions.  Compiling
  42    and linking in this code is a waste when using the GNU C library
  43    (especially if it is a shared library).  Rather than having every GNU
  44    program understand `configure --with-gnu-libc' and omit the object files,
  45    it is simpler to just do this in the source for each such file.  */
  46
  47 #define GETOPT_INTERFACE_VERSION 2
  48 #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
  49 #include <gnu-versions.h>
  50 #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
  51 #define ELIDE_CODE
  52 #endif
  53 #endif
  54
  55 #ifndef ELIDE_CODE
  56
  57
  58 /* This needs to come after some library #include
  59    to get __GNU_LIBRARY__ defined.  */
  60 #ifdef __GNU_LIBRARY__
  61 #include <stdlib.h>
  62 #endif
  63
  64 #ifndef NULL
  65 #define NULL 0
  66 #endif
  67
  68 int
  69 getopt_long (int argc,  char *const *argv,  const char *options,
  70              const struct option *long_options, int *opt_index)
  71 {
  72   return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
  73 }
  74
  75 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
  76    If an option that starts with '-' (not '--') doesn't match a long option,
  77    but does match a short option, it is parsed as a short option
  78    instead.  */
  79
  80 int
  81 getopt_long_only (int argc, char *const *argv, const char *options,
  82                   const struct option *long_options, int *opt_index)
  83 {
  84   return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
  85 }
  86
  87
  88 #endif  /* Not ELIDE_CODE.  */
  89 \f
  90 #ifdef TEST
  91
  92 #include <stdio.h>
  93
  94 int
  95 main (int argc, char **argv)
  96 {
  97   int c;
  98   int digit_optind = 0;
  99
 100   while (1)
 101     {
 102       int this_option_optind = optind ? optind : 1;
 103       int option_index = 0;
 104       static struct option long_options[] =
 105       {
 106         {"add", 1, 0, 0},
 107         {"append", 0, 0, 0},
 108         {"delete", 1, 0, 0},
 109         {"verbose", 0, 0, 0},
 110         {"create", 0, 0, 0},
 111         {"file", 1, 0, 0},
 112         {0, 0, 0, 0}
 113       };
 114
 115       c = getopt_long (argc, argv, "abc:d:0123456789",
 116                        long_options, &option_index);
 117       if (c == -1)
 118         break;
 119
 120       switch (c)
 121         {
 122         case 0:
 123           printf ("option %s", long_options[option_index].name);
 124           if (optarg)
 125             printf (" with arg %s", optarg);
 126           printf ("\n");
 127           break;
 128
 129         case '0':
 130         case '1':
 131         case '2':
 132         case '3':
 133         case '4':
 134         case '5':
 135         case '6':
 136         case '7':
 137         case '8':
 138         case '9':
 139           if (digit_optind != 0 && digit_optind != this_option_optind)
 140             printf ("digits occur in two different argv-elements.\n");
 141           digit_optind = this_option_optind;
 142           printf ("option %c\n", c);
 143           break;
 144
 145         case 'a':
 146           printf ("option a\n");
 147           break;
 148
 149         case 'b':
 150           printf ("option b\n");
 151           break;
 152
 153         case 'c':
 154           printf ("option c with value `%s'\n", optarg);
 155           break;
 156
 157         case 'd':
 158           printf ("option d with value `%s'\n", optarg);
 159           break;
 160
 161         case '?':
 162           break;
 163
 164         default:
 165           printf ("?? getopt returned character code 0%o ??\n", c);
 166         }
 167     }
 168
 169   if (optind < argc)
 170     {
 171       printf ("non-option ARGV-elements: ");
 172       while (optind < argc)
 173         printf ("%s ", argv[optind++]);
 174       printf ("\n");
 175     }
 176
 177   exit (0);
 178 }
 179
 180 #endif /* TEST */