mdw@git.distorted.org.uk Git - secnet/blob - getopt1.c

   1 /* getopt_long and getopt_long_only entry points for GNU getopt.
   2    Copyright (C) 1987, 88, 89, 90, 91, 92, 1993
   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 !__STDC__ && !defined(const) && IN_GCC
  26 #define const
  27 #endif
  28
  29 #include <stdio.h>
  30
  31 /* Comment out all this code if we are using the GNU C Library, and are not
  32    actually compiling the library itself.  This code is part of the GNU C
  33    Library, but also included in many other GNU distributions.  Compiling
  34    and linking in this code is a waste when using the GNU C library
  35    (especially if it is a shared library).  Rather than having every GNU
  36    program understand `configure --with-gnu-libc' and omit the object files,
  37    it is simpler to just do this in the source for each such file.  */
  38
  39 #if defined (_LIBC) || !defined (__GNU_LIBRARY__)
  40
  41
  42 /* This needs to come after some library #include
  43    to get __GNU_LIBRARY__ defined.  */
  44 #ifdef __GNU_LIBRARY__
  45 #include <stdlib.h>
  46 #else
  47 char *getenv ();
  48 #endif
  49
  50 #ifndef NULL
  51 #define NULL 0
  52 #endif
  53
  54 int
  55 getopt_long (argc, argv, options, long_options, opt_index)
  56      int argc;
  57      char *const *argv;
  58      const char *options;
  59      const struct option *long_options;
  60      int *opt_index;
  61 {
  62   return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
  63 }
  64
  65 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
  66    If an option that starts with '-' (not '--') doesn't match a long option,
  67    but does match a short option, it is parsed as a short option
  68    instead.  */
  69
  70 int
  71 getopt_long_only (argc, argv, options, long_options, opt_index)
  72      int argc;
  73      char *const *argv;
  74      const char *options;
  75      const struct option *long_options;
  76      int *opt_index;
  77 {
  78   return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
  79 }
  80
  81
  82 #endif  /* _LIBC or not __GNU_LIBRARY__.  */
  83 \f
  84 #ifdef TEST
  85
  86 #include <stdio.h>
  87
  88 int
  89 main (argc, argv)
  90      int argc;
  91      char **argv;
  92 {
  93   int c;
  94   int digit_optind = 0;
  95
  96   while (1)
  97     {
  98       int this_option_optind = optind ? optind : 1;
  99       int option_index = 0;
 100       static struct option long_options[] =
 101       {
 102         {"add", 1, 0, 0},
 103         {"append", 0, 0, 0},
 104         {"delete", 1, 0, 0},
 105         {"verbose", 0, 0, 0},
 106         {"create", 0, 0, 0},
 107         {"file", 1, 0, 0},
 108         {0, 0, 0, 0}
 109       };
 110
 111       c = getopt_long (argc, argv, "abc:d:0123456789",
 112                        long_options, &option_index);
 113       if (c == EOF)
 114         break;
 115
 116       switch (c)
 117         {
 118         case 0:
 119           printf ("option %s", long_options[option_index].name);
 120           if (optarg)
 121             printf (" with arg %s", optarg);
 122           printf ("\n");
 123           break;
 124
 125         case '0':
 126         case '1':
 127         case '2':
 128         case '3':
 129         case '4':
 130         case '5':
 131         case '6':
 132         case '7':
 133         case '8':
 134         case '9':
 135           if (digit_optind != 0 && digit_optind != this_option_optind)
 136             printf ("digits occur in two different argv-elements.\n");
 137           digit_optind = this_option_optind;
 138           printf ("option %c\n", c);
 139           break;
 140
 141         case 'a':
 142           printf ("option a\n");
 143           break;
 144
 145         case 'b':
 146           printf ("option b\n");
 147           break;
 148
 149         case 'c':
 150           printf ("option c with value `%s'\n", optarg);
 151           break;
 152
 153         case 'd':
 154           printf ("option d with value `%s'\n", optarg);
 155           break;
 156
 157         case '?':
 158           break;
 159
 160         default:
 161           printf ("?? getopt returned character code 0%o ??\n", c);
 162         }
 163     }
 164
 165   if (optind < argc)
 166     {
 167       printf ("non-option ARGV-elements: ");
 168       while (optind < argc)
 169         printf ("%s ", argv[optind++]);
 170       printf ("\n");
 171     }
 172
 173   exit (0);
 174 }
 175
 176 #endif /* TEST */