finch/getopt1.c

   1 /* getopt_long and getopt_long_only entry points for GNU getopt.
   2    Finch is the legal property of its developers, whose names are too numerous
   3    to list here.  Please refer to the COPYRIGHT file distributed with this
   4    source distribution.
   5
   6    This program is free software; you can redistribute it and/or modify it
   7    under the terms of the GNU General Public License as published by the
   8    Free Software Foundation; either version 2, or (at your option) any
   9    later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #include "getopt.h"
  25
  26 #if !__STDC__ && !defined(const) && IN_GCC
  27 #define const
  28 #endif
  29
  30 #include <stdio.h>
  31
  32 /* Comment out all this code if we are using the GNU C Library, and are not
  33    actually compiling the library itself.  This code is part of the GNU C
  34    Library, but also included in many other GNU distributions.  Compiling
  35    and linking in this code is a waste when using the GNU C library
  36    (especially if it is a shared library).  Rather than having every GNU
  37    program understand `configure --with-gnu-libc' and omit the object files,
  38    it is simpler to just do this in the source for each such file.  */
  39
  40 #if defined (_LIBC) || !defined (__GNU_LIBRARY__)
  41
  42
  43 /* This needs to come after some library #include
  44    to get __GNU_LIBRARY__ defined.  */
  45 #ifdef __GNU_LIBRARY__
  46 #include <stdlib.h>
  47 #else
  48 char *getenv ();
  49 #endif
  50
  51 #ifndef NULL
  52 #define NULL 0
  53 #endif
  54
  55 int
  56 getopt_long (argc, argv, options, long_options, opt_index)
  57      int argc;
  58      char *const *argv;
  59      const char *options;
  60      const struct option *long_options;
  61      int *opt_index;
  62 {
  63   return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
  64 }
  65
  66 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
  67    If an option that starts with '-' (not '--') doesn't match a long option,
  68    but does match a short option, it is parsed as a short option
  69    instead.  */
  70
  71 int
  72 getopt_long_only (argc, argv, options, long_options, opt_index)
  73      int argc;
  74      char *const *argv;
  75      const char *options;
  76      const struct option *long_options;
  77      int *opt_index;
  78 {
  79   return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
  80 }
  81
  82
  83 #endif  /* _LIBC or not __GNU_LIBRARY__.  */
  84
  85 #ifdef TEST
  86
  87 #include <stdio.h>
  88
  89 int
  90 main (argc, argv)
  91      int argc;
  92      char **argv;
  93 {
  94   int c;
  95   int digit_optind = 0;
  96
  97   while (1)
  98     {
  99       int this_option_optind = optind ? optind : 1;
 100       int option_index = 0;
 101       static struct option long_options[] =
 102       {
 103         {"add", 1, 0, 0},
 104         {"append", 0, 0, 0},
 105         {"delete", 1, 0, 0},
 106         {"verbose", 0, 0, 0},
 107         {"create", 0, 0, 0},
 108         {"file", 1, 0, 0},
 109         {0, 0, 0, 0}
 110       };
 111
 112       c = getopt_long (argc, argv, "abc:d:0123456789",
 113                        long_options, &option_index);
 114       if (c == EOF)
 115         break;
 116
 117       switch (c)
 118         {
 119         case 0:
 120           printf ("option %s", long_options[option_index].name);
 121           if (optarg)
 122             printf (" with arg %s", optarg);
 123           printf ("\n");
 124           break;
 125
 126         case '0':
 127         case '1':
 128         case '2':
 129         case '3':
 130         case '4':
 131         case '5':
 132         case '6':
 133         case '7':
 134         case '8':
 135         case '9':
 136           if (digit_optind != 0 && digit_optind != this_option_optind)
 137             printf ("digits occur in two different argv-elements.\n");
 138           digit_optind = this_option_optind;
 139           printf ("option %c\n", c);
 140           break;
 141
 142         case 'a':
 143           printf ("option a\n");
 144           break;
 145
 146         case 'b':
 147           printf ("option b\n");
 148           break;
 149
 150         case 'c':
 151           printf ("option c with value `%s'\n", optarg);
 152           break;
 153
 154         case 'd':
 155           printf ("option d with value `%s'\n", optarg);
 156           break;
 157
 158         case '?':
 159           break;
 160
 161         default:
 162           printf ("?? getopt returned character code 0%o ??\n", c);
 163         }
 164     }
 165
 166   if (optind < argc)
 167     {
 168       printf ("non-option ARGV-elements: ");
 169       while (optind < argc)
 170         printf ("%s ", argv[optind++]);
 171       printf ("\n");
 172     }
 173
 174   exit (0);
 175 }
 176
 177 #endif /* TEST */