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getopt1.c revision 1.1 
      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
      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 
     20 #ifdef HAVE_CONFIG_H
     22 # include <config.h>
     23 #endif
     24 
     25 #ifdef _LIBC
     26 # include <getopt.h>
     27 #else
     28 # include "getopt.h"
     29 #endif
     30 #include "getopt_int.h"
     31 
     32 #include <stdio.h>
     33 
     34 /* This needs to come after some library #include
     35    to get __GNU_LIBRARY__ defined.  */
     36 #ifdef __GNU_LIBRARY__
     37 #include <stdlib.h>
     38 #endif
     39 
     40 #ifndef	NULL
     41 #define NULL 0
     42 #endif
     43 
     44 int
     45 getopt_long (int argc, char *__getopt_argv_const *argv, const char *options,
     46 	     const struct option *long_options, int *opt_index)
     47 {
     48   return _getopt_internal (argc, (char **) argv, options, long_options,
     49 			   opt_index, 0, 0);
     50 }
     51 
     52 int
     53 _getopt_long_r (int argc, char **argv, const char *options,
     54 		const struct option *long_options, int *opt_index,
     55 		struct _getopt_data *d)
     56 {
     57   return _getopt_internal_r (argc, argv, options, long_options, opt_index,
     58 			     0, 0, d);
     59 }
     60 
     61 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
     62    If an option that starts with '-' (not '--') doesn't match a long option,
     63    but does match a short option, it is parsed as a short option
     64    instead.  */
     65 
     66 int
     67 getopt_long_only (int argc, char *__getopt_argv_const *argv,
     68 		  const char *options,
     69 		  const struct option *long_options, int *opt_index)
     70 {
     71   return _getopt_internal (argc, (char **) argv, options, long_options,
     72 			   opt_index, 1, 0);
     73 }
     74 
     75 int
     76 _getopt_long_only_r (int argc, char **argv, const char *options,
     77 		     const struct option *long_options, int *opt_index,
     78 		     struct _getopt_data *d)
     79 {
     80   return _getopt_internal_r (argc, argv, options, long_options, opt_index,
     81 			     1, 0, d);
     82 }
     83 
     84 
     85 #ifdef TEST
     87 
     88 #include <stdio.h>
     89 
     90 int
     91 main (int argc, 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 == -1)
    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 */
    177