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      1 /* getopt_long and getopt_long_only entry points for GNU getopt.
      2    Copyright (C) 1987-1994, 1996-1998, 2004, 2006, 2009-2012 Free Software
      3    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 3 of the License, or
      9    (at your option) 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
     17    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
     18 
     19 #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, d, 0);
     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, d, 0);
     78 }
     79 
     80 
     81 #ifdef TEST
     83 
     84 #include <stdio.h>
     85 
     86 int
     87 main (int argc, char **argv)
     88 {
     89   int c;
     90   int digit_optind = 0;
     91 
     92   while (1)
     93     {
     94       int this_option_optind = optind ? optind : 1;
     95       int option_index = 0;
     96       static const struct option long_options[] =
     97       {
     98         {"add", 1, 0, 0},
     99         {"append", 0, 0, 0},
    100         {"delete", 1, 0, 0},
    101         {"verbose", 0, 0, 0},
    102         {"create", 0, 0, 0},
    103         {"file", 1, 0, 0},
    104         {0, 0, 0, 0}
    105       };
    106 
    107       c = getopt_long (argc, argv, "abc:d:0123456789",
    108                        long_options, &option_index);
    109       if (c == -1)
    110         break;
    111 
    112       switch (c)
    113         {
    114         case 0:
    115           printf ("option %s", long_options[option_index].name);
    116           if (optarg)
    117             printf (" with arg %s", optarg);
    118           printf ("\n");
    119           break;
    120 
    121         case '0':
    122         case '1':
    123         case '2':
    124         case '3':
    125         case '4':
    126         case '5':
    127         case '6':
    128         case '7':
    129         case '8':
    130         case '9':
    131           if (digit_optind != 0 && digit_optind != this_option_optind)
    132             printf ("digits occur in two different argv-elements.\n");
    133           digit_optind = this_option_optind;
    134           printf ("option %c\n", c);
    135           break;
    136 
    137         case 'a':
    138           printf ("option a\n");
    139           break;
    140 
    141         case 'b':
    142           printf ("option b\n");
    143           break;
    144 
    145         case 'c':
    146           printf ("option c with value '%s'\n", optarg);
    147           break;
    148 
    149         case 'd':
    150           printf ("option d with value '%s'\n", optarg);
    151           break;
    152 
    153         case '?':
    154           break;
    155 
    156         default:
    157           printf ("?? getopt returned character code 0%o ??\n", c);
    158         }
    159     }
    160 
    161   if (optind < argc)
    162     {
    163       printf ("non-option ARGV-elements: ");
    164       while (optind < argc)
    165         printf ("%s ", argv[optind++]);
    166       printf ("\n");
    167     }
    168 
    169   exit (0);
    170 }
    171 
    172 #endif /* TEST */
    173