lib/getopt1.c

   1 /* getopt_long and getopt_long_only entry points for GNU getopt.
   2    Copyright (C) 1987,88,89,90,91,92,93,94,96,97,98,2004,2006
   3      Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2, or (at your option)
   9    any 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 along
  17    with this program; if not, write to the Free Software Foundation,
  18    Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
  19 \f
  20 #ifdef _LIBC
  21 # include <getopt.h>
  22 #else
  23 # include <config.h>
  24 # include "getopt.h"
  25 #endif
  26 #include "getopt_int.h"
  27
  28 #include <stdio.h>
  29
  30 /* This needs to come after some library #include
  31    to get __GNU_LIBRARY__ defined.  */
  32 #ifdef __GNU_LIBRARY__
  33 #include <stdlib.h>
  34 #endif
  35
  36 #ifndef NULL
  37 #define NULL 0
  38 #endif
  39
  40 int
  41 getopt_long (int argc, char *__getopt_argv_const *argv, const char *options,
  42              const struct option *long_options, int *opt_index)
  43 {
  44   return _getopt_internal (argc, (char **) argv, options, long_options,
  45                            opt_index, 0, 0);
  46 }
  47
  48 int
  49 _getopt_long_r (int argc, char **argv, const char *options,
  50                 const struct option *long_options, int *opt_index,
  51                 struct _getopt_data *d)
  52 {
  53   return _getopt_internal_r (argc, argv, options, long_options, opt_index,
  54                              0, 0, d);
  55 }
  56
  57 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
  58    If an option that starts with '-' (not '--') doesn't match a long option,
  59    but does match a short option, it is parsed as a short option
  60    instead.  */
  61
  62 int
  63 getopt_long_only (int argc, char *__getopt_argv_const *argv,
  64                   const char *options,
  65                   const struct option *long_options, int *opt_index)
  66 {
  67   return _getopt_internal (argc, (char **) argv, options, long_options,
  68                            opt_index, 1, 0);
  69 }
  70
  71 int
  72 _getopt_long_only_r (int argc, char **argv, const char *options,
  73                      const struct option *long_options, int *opt_index,
  74                      struct _getopt_data *d)
  75 {
  76   return _getopt_internal_r (argc, argv, options, long_options, opt_index,
  77                              1, 0, d);
  78 }
  79
  80 \f
  81 #ifdef TEST
  82
  83 #include <stdio.h>
  84
  85 int
  86 main (int argc, char **argv)
  87 {
  88   int c;
  89   int digit_optind = 0;
  90
  91   while (1)
  92     {
  93       int this_option_optind = optind ? optind : 1;
  94       int option_index = 0;
  95       static struct option long_options[] =
  96       {
  97         {"add", 1, 0, 0},
  98         {"append", 0, 0, 0},
  99         {"delete", 1, 0, 0},
 100         {"verbose", 0, 0, 0},
 101         {"create", 0, 0, 0},
 102         {"file", 1, 0, 0},
 103         {0, 0, 0, 0}
 104       };
 105
 106       c = getopt_long (argc, argv, "abc:d:0123456789",
 107                        long_options, &option_index);
 108       if (c == -1)
 109         break;
 110
 111       switch (c)
 112         {
 113         case 0:
 114           printf ("option %s", long_options[option_index].name);
 115           if (optarg)
 116             printf (" with arg %s", optarg);
 117           printf ("\n");
 118           break;
 119
 120         case '0':
 121         case '1':
 122         case '2':
 123         case '3':
 124         case '4':
 125         case '5':
 126         case '6':
 127         case '7':
 128         case '8':
 129         case '9':
 130           if (digit_optind != 0 && digit_optind != this_option_optind)
 131             printf ("digits occur in two different argv-elements.\n");
 132           digit_optind = this_option_optind;
 133           printf ("option %c\n", c);
 134           break;
 135
 136         case 'a':
 137           printf ("option a\n");
 138           break;
 139
 140         case 'b':
 141           printf ("option b\n");
 142           break;
 143
 144         case 'c':
 145           printf ("option c with value `%s'\n", optarg);
 146           break;
 147
 148         case 'd':
 149           printf ("option d with value `%s'\n", optarg);
 150           break;
 151
 152         case '?':
 153           break;
 154
 155         default:
 156           printf ("?? getopt returned character code 0%o ??\n", c);
 157         }
 158     }
 159
 160   if (optind < argc)
 161     {
 162       printf ("non-option ARGV-elements: ");
 163       while (optind < argc)
 164         printf ("%s ", argv[optind++]);
 165       printf ("\n");
 166     }
 167
 168   exit (0);
 169 }
 170
 171 #endif /* TEST */