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
   3      Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library 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 GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20 \f
  21 #ifdef HAVE_CONFIG_H
  22 #include <config.h>
  23 #endif
  24
  25 #include "getopt.h"
  26
  27 #if !defined __STDC__ || !__STDC__
  28 /* This is a separate conditional since some stdc systems
  29    reject `defined (const)'.  */
  30 #ifndef const
  31 #define const
  32 #endif
  33 #endif
  34
  35 #include <stdio.h>
  36
  37 /* Comment out all this code if we are using the GNU C Library, and are not
  38    actually compiling the library itself.  This code is part of the GNU C
  39    Library, but also included in many other GNU distributions.  Compiling
  40    and linking in this code is a waste when using the GNU C library
  41    (especially if it is a shared library).  Rather than having every GNU
  42    program understand `configure --with-gnu-libc' and omit the object files,
  43    it is simpler to just do this in the source for each such file.  */
  44
  45 #define GETOPT_INTERFACE_VERSION 2
  46 #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
  47 #include <gnu-versions.h>
  48 #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
  49 #define ELIDE_CODE
  50 #endif
  51 #endif
  52
  53 #ifndef ELIDE_CODE
  54
  55 /* This needs to come after some library #include
  56    to get __GNU_LIBRARY__ defined.  */
  57 #ifdef __GNU_LIBRARY__
  58 #include <stdlib.h>
  59 #endif
  60
  61 #ifndef NULL
  62 #define NULL 0
  63 #endif
  64
  65 int getopt_long(argc, argv, options, long_options, opt_index)
  66 int argc;
  67 char *const *argv;
  68 const char *options;
  69 const struct option *long_options;
  70 int *opt_index;
  71 {
  72         return _getopt_internal(argc, argv, options, long_options, opt_index,
  73                                 0);
  74 }
  75
  76 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
  77    If an option that starts with '-' (not '--') doesn't match a long option,
  78    but does match a short option, it is parsed as a short option
  79    instead.  */
  80
  81 int getopt_long_only(argc, argv, options, long_options, opt_index)
  82 int argc;
  83 char *const *argv;
  84 const char *options;
  85 const struct option *long_options;
  86 int *opt_index;
  87 {
  88         return _getopt_internal(argc, argv, options, long_options, opt_index,
  89                                 1);
  90 }
  91
  92 #endif /* Not ELIDE_CODE.  */
  93 \f
  94 #ifdef TEST
  95
  96 #include <stdio.h>
  97
  98 int main(argc, argv)
  99 int argc;
 100 char **argv;
 101 {
 102         int c;
 103         int digit_optind = 0;
 104
 105         while (1) {
 106                 int this_option_optind = optind ? optind : 1;
 107                 int option_index = 0;
 108                 static struct option long_options[] = {
 109                         {"add", 1, 0, 0},
 110                         {"append", 0, 0, 0},
 111                         {"delete", 1, 0, 0},
 112                         {"verbose", 0, 0, 0},
 113                         {"create", 0, 0, 0},
 114                         {"file", 1, 0, 0},
 115                         {0, 0, 0, 0}
 116                 };
 117
 118                 c = getopt_long(argc, argv, "abc:d:0123456789",
 119                                 long_options, &option_index);
 120                 if (c == -1)
 121                         break;
 122
 123                 switch (c) {
 124                 case 0:
 125                         printf("option %s", long_options[option_index].name);
 126                         if (optarg)
 127                                 printf(" with arg %s", optarg);
 128                         printf("\n");
 129                         break;
 130
 131                 case '0':
 132                 case '1':
 133                 case '2':
 134                 case '3':
 135                 case '4':
 136                 case '5':
 137                 case '6':
 138                 case '7':
 139                 case '8':
 140                 case '9':
 141                         if (digit_optind != 0
 142                             && digit_optind != this_option_optind)
 143                                 printf
 144                                     ("digits occur in two different argv-elements.\n");
 145                         digit_optind = this_option_optind;
 146                         printf("option %c\n", c);
 147                         break;
 148
 149                 case 'a':
 150                         printf("option a\n");
 151                         break;
 152
 153                 case 'b':
 154                         printf("option b\n");
 155                         break;
 156
 157                 case 'c':
 158                         printf("option c with value `%s'\n", optarg);
 159                         break;
 160
 161                 case 'd':
 162                         printf("option d with value `%s'\n", optarg);
 163                         break;
 164
 165                 case '?':
 166                         break;
 167
 168                 default:
 169                         printf("?? getopt returned character code 0%o ??\n", c);
 170                 }
 171         }
 172
 173         if (optind < argc) {
 174                 printf("non-option ARGV-elements: ");
 175                 while (optind < argc)
 176                         printf("%s ", argv[optind++]);
 177                 printf("\n");
 178         }
 179
 180         exit(0);
 181 }
 182
 183 #endif /* TEST */