lib/getopt1.c

   1 /* getopt_long and getopt_long_only entry points for GNU getopt.
   2    Copyright (C) 1987, 88, 89, 90, 91, 92, 1993, 1994
   3         Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify it
   6    under the terms of the GNU General Public License as published by the
   7    Free Software Foundation; either version 2, or (at your option) any
   8    later version.
   9
  10    This program 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
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program; if not, write to the Free Software
  17    Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  18 \f
  19 #ifdef HAVE_CONFIG_H
  20 #include <config.h>
  21 #endif
  22
  23 #include "getopt.h"
  24
  25 #if !defined (__STDC__) || !__STDC__
  26 /* This is a separate conditional since some stdc systems
  27    reject `defined (const)'.  */
  28 #ifndef const
  29 #define const
  30 #endif
  31 #endif
  32
  33 #include <stdio.h>
  34
  35 /* Comment out all this code if we are using the GNU C Library, and are not
  36    actually compiling the library itself.  This code is part of the GNU C
  37    Library, but also included in many other GNU distributions.  Compiling
  38    and linking in this code is a waste when using the GNU C library
  39    (especially if it is a shared library).  Rather than having every GNU
  40    program understand `configure --with-gnu-libc' and omit the object files,
  41    it is simpler to just do this in the source for each such file.  */
  42
  43 #if defined (_LIBC) || !defined (__GNU_LIBRARY__)
  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  /* _LIBC or not __GNU_LIBRARY__.  */
  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 == EOF)
 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 */