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getopt1.c revision 1.1.1.1 
      1 /* getopt_long and getopt_long_only entry points for GNU getopt.
      2    Copyright (C) 1987,88,89,90,91,92,93,94,96,97,98,2004,2006
      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 
     20 #ifdef _LIBC
     22 # include <getopt.h>
     23 #else
     24 # include <config.h>
     25 # include "getopt.h"
     26 #endif
     27 #include "getopt_int.h"
     28 
     29 #include <stdio.h>
     30 
     31 /* This needs to come after some library #include
     32    to get __GNU_LIBRARY__ defined.  */
     33 #ifdef __GNU_LIBRARY__
     34 #include <stdlib.h>
     35 #endif
     36 
     37 #ifndef	NULL
     38 #define NULL 0
     39 #endif
     40 
     41 int
     42 getopt_long (int argc, char *__getopt_argv_const *argv, const char *options,
     43 	     const struct option *long_options, int *opt_index)
     44 {
     45   return _getopt_internal (argc, (char **) argv, options, long_options,
     46 			   opt_index, 0, 0);
     47 }
     48 
     49 int
     50 _getopt_long_r (int argc, char **argv, const char *options,
     51 		const struct option *long_options, int *opt_index,
     52 		struct _getopt_data *d)
     53 {
     54   return _getopt_internal_r (argc, argv, options, long_options, opt_index,
     55 			     0, 0, d);
     56 }
     57 
     58 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
     59    If an option that starts with '-' (not '--') doesn't match a long option,
     60    but does match a short option, it is parsed as a short option
     61    instead.  */
     62 
     63 int
     64 getopt_long_only (int argc, char *__getopt_argv_const *argv,
     65 		  const char *options,
     66 		  const struct option *long_options, int *opt_index)
     67 {
     68   return _getopt_internal (argc, (char **) argv, options, long_options,
     69 			   opt_index, 1, 0);
     70 }
     71 
     72 int
     73 _getopt_long_only_r (int argc, char **argv, const char *options,
     74 		     const struct option *long_options, int *opt_index,
     75 		     struct _getopt_data *d)
     76 {
     77   return _getopt_internal_r (argc, argv, options, long_options, opt_index,
     78 			     1, 0, d);
     79 }
     80 
     81 
     82 #ifdef TEST
     84 
     85 #include <stdio.h>
     86 
     87 int
     88 main (int argc, char **argv)
     89 {
     90   int c;
     91   int digit_optind = 0;
     92 
     93   while (1)
     94     {
     95       int this_option_optind = optind ? optind : 1;
     96       int option_index = 0;
     97       static struct option long_options[] =
     98       {
     99 	{"add", 1, 0, 0},
    100 	{"append", 0, 0, 0},
    101 	{"delete", 1, 0, 0},
    102 	{"verbose", 0, 0, 0},
    103 	{"create", 0, 0, 0},
    104 	{"file", 1, 0, 0},
    105 	{0, 0, 0, 0}
    106       };
    107 
    108       c = getopt_long (argc, argv, "abc:d:0123456789",
    109 		       long_options, &option_index);
    110       if (c == -1)
    111 	break;
    112 
    113       switch (c)
    114 	{
    115 	case 0:
    116 	  printf ("option %s", long_options[option_index].name);
    117 	  if (optarg)
    118 	    printf (" with arg %s", optarg);
    119 	  printf ("\n");
    120 	  break;
    121 
    122 	case '0':
    123 	case '1':
    124 	case '2':
    125 	case '3':
    126 	case '4':
    127 	case '5':
    128 	case '6':
    129 	case '7':
    130 	case '8':
    131 	case '9':
    132 	  if (digit_optind != 0 && digit_optind != this_option_optind)
    133 	    printf ("digits occur in two different argv-elements.\n");
    134 	  digit_optind = this_option_optind;
    135 	  printf ("option %c\n", c);
    136 	  break;
    137 
    138 	case 'a':
    139 	  printf ("option a\n");
    140 	  break;
    141 
    142 	case 'b':
    143 	  printf ("option b\n");
    144 	  break;
    145 
    146 	case 'c':
    147 	  printf ("option c with value `%s'\n", optarg);
    148 	  break;
    149 
    150 	case 'd':
    151 	  printf ("option d with value `%s'\n", optarg);
    152 	  break;
    153 
    154 	case '?':
    155 	  break;
    156 
    157 	default:
    158 	  printf ("?? getopt returned character code 0%o ??\n", c);
    159 	}
    160     }
    161 
    162   if (optind < argc)
    163     {
    164       printf ("non-option ARGV-elements: ");
    165       while (optind < argc)
    166 	printf ("%s ", argv[optind++]);
    167       printf ("\n");
    168     }
    169 
    170   exit (0);
    171 }
    172 
    173 #endif /* TEST */
    174