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  *
   5  * NOTE: The canonical source of this file is maintained with the GNU C Library.
   6  * Bugs can be reported to bug-glibc@gnu.org.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by the
  10  * Free Software Foundation; either version 2, or (at your option) any
  11  * later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; see the file COPYING; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  21  */
  22
  23 #include <zebra.h>
  24 #include "getopt.h"
  25
  26 #if !defined __STDC__ || !__STDC__
  27 /* This is a separate conditional since some stdc systems
  28    reject `defined (const)'.  */
  29 #ifndef const
  30 #define const
  31 #endif
  32 #endif
  33
  34 #include <stdio.h>
  35
  36 /* Comment out all this code if we are using the GNU C Library, and are not
  37    actually compiling the library itself.  This code is part of the GNU C
  38    Library, but also included in many other GNU distributions.  Compiling
  39    and linking in this code is a waste when using the GNU C library
  40    (especially if it is a shared library).  Rather than having every GNU
  41    program understand `configure --with-gnu-libc' and omit the object files,
  42    it is simpler to just do this in the source for each such file.  */
  43
  44 #define GETOPT_INTERFACE_VERSION 2
  45 #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
  46 #include <gnu-versions.h>
  47 #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
  48 #define ELIDE_CODE
  49 #endif
  50 #endif
  51
  52 #ifndef ELIDE_CODE
  53
  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) int argc;
  66 char *const *argv;
  67 const char *options;
  68 const struct option *long_options;
  69 int *opt_index;
  70 {
  71         return _getopt_internal(argc, argv, options, long_options, opt_index,
  72                                 0);
  73 }
  74
  75 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
  76    If an option that starts with '-' (not '--') doesn't match a long option,
  77    but does match a short option, it is parsed as a short option
  78    instead.  */
  79
  80 int getopt_long_only(argc, argv, options, long_options, opt_index) int argc;
  81 char *const *argv;
  82 const char *options;
  83 const struct option *long_options;
  84 int *opt_index;
  85 {
  86         return _getopt_internal(argc, argv, options, long_options, opt_index,
  87                                 1);
  88 }
  89
  90
  91 #endif /* Not ELIDE_CODE.  */
  92
  93 #ifdef TEST
  94
  95 #include <stdio.h>
  96
  97 int main(argc, argv) int argc;
  98 char **argv;
  99 {
 100         int c;
 101         int digit_optind = 0;
 102
 103         while (1) {
 104                 int this_option_optind = optind ? optind : 1;
 105                 int option_index = 0;
 106                 static struct option long_options[] = {
 107                         {"add", 1, 0, 0},    {"append", 0, 0, 0},
 108                         {"delete", 1, 0, 0}, {"verbose", 0, 0, 0},
 109                         {"create", 0, 0, 0}, {"file", 1, 0, 0},
 110                         {0, 0, 0, 0}};
 111
 112                 c = getopt_long(argc, argv, "abc:d:0123456789", long_options,
 113                                 &option_index);
 114                 if (c == -1)
 115                         break;
 116
 117                 switch (c) {
 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
 136                             && digit_optind != this_option_optind)
 137                                 printf("digits occur in two different argv-elements.\n");
 138                         digit_optind = this_option_optind;
 139                         printf("option %c\n", c);
 140                         break;
 141
 142                 case 'a':
 143                         printf("option a\n");
 144                         break;
 145
 146                 case 'b':
 147                         printf("option b\n");
 148                         break;
 149
 150                 case 'c':
 151                         printf("option c with value `%s'\n", optarg);
 152                         break;
 153
 154                 case 'd':
 155                         printf("option d with value `%s'\n", optarg);
 156                         break;
 157
 158                 case '?':
 159                         break;
 160
 161                 default:
 162                         printf("?? getopt returned character code 0%o ??\n", c);
 163                 }
 164         }
 165
 166         if (optind < argc) {
 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 */