source/texk/kpathsea/getopt1.c

   1 /* getopt_long and getopt_long_only entry points for GNU getopt.
   2
   3    Copyright 2008, 2010 Karl Berry.
   4    Copyright (C) 1987,88,89,90,91,92,93,94,96,97 Free Software Foundation, Inc.
   5
   6    The original version of this file was part of the GNU C Library.
   7    It has been modified for use with libkpathsea.
   8
   9    This library is free software; you can redistribute it and/or
  10    modify it under the terms of the GNU Lesser General Public
  11    License as published by the Free Software Foundation; either
  12    version 2.1 of the License, or (at your option) any later version.
  13
  14    This library is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17    Lesser General Public License for more details.
  18
  19    You should have received a copy of the GNU Lesser General Public License
  20    along with this library; if not, see <http://www.gnu.org/licenses/>.  */
  21
  22 \f
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include "getopt.h"
  28
  29 #include <stdio.h>
  30
  31 /* Comment out all this code if we are using the GNU C Library, and are not
  32    actually compiling the library itself.  This code is part of the GNU C
  33    Library, but also included in many other GNU distributions.  Compiling
  34    and linking in this code is a waste when using the GNU C library
  35    (especially if it is a shared library).  Rather than having every GNU
  36    program understand `configure --with-gnu-libc' and omit the object files,
  37    it is simpler to just do this in the source for each such file.  */
  38
  39 #define GETOPT_INTERFACE_VERSION 2
  40 #if !defined (_LIBC) && defined (__GLIBC__) && __GLIBC__ >= 2
  41 #include <gnu-versions.h>
  42 #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
  43 #define ELIDE_CODE
  44 #endif
  45 #endif
  46
  47 #ifndef ELIDE_CODE
  48
  49
  50 /* This needs to come after some library #include
  51    to get __GNU_LIBRARY__ defined.  */
  52 #ifdef __GNU_LIBRARY__
  53 #include <stdlib.h>
  54 #endif
  55
  56 #ifndef NULL
  57 #define NULL 0
  58 #endif
  59
  60 int getopt_long(
  61      int argc,
  62      char *const *argv,
  63      const char *options,
  64      const struct option *long_options,
  65      int *opt_index
  66 ){
  67   return _getopt_internal (argc, argv, options, long_options, opt_index, 0);
  68 }
  69
  70 /* Like getopt_long, but '-' as well as '--' can indicate a long option.
  71    If an option that starts with '-' (not '--') doesn't match a long option,
  72    but does match a short option, it is parsed as a short option
  73    instead.  */
  74
  75 int getopt_long_only(
  76      int argc,
  77      char *const *argv,
  78      const char *options,
  79      const struct option *long_options,
  80      int *opt_index
  81 ){
  82   return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
  83 }
  84
  85
  86 #endif  /* Not ELIDE_CODE.  */
  87 \f
  88 #ifdef TEST
  89
  90 #include <stdio.h>
  91
  92 int main(int argc, char **argv)
  93 {
  94   int c;
  95   int digit_optind = 0;
  96
  97   while (1)
  98     {
  99       int this_option_optind = optind ? optind : 1;
 100       int option_index = 0;
 101       static struct option long_options[] =
 102       {
 103         {"add", 1, 0, 0},
 104         {"append", 0, 0, 0},
 105         {"delete", 1, 0, 0},
 106         {"verbose", 0, 0, 0},
 107         {"create", 0, 0, 0},
 108         {"file", 1, 0, 0},
 109         {0, 0, 0, 0}
 110       };
 111
 112       c = getopt_long (argc, argv, "abc:d:0123456789",
 113                        long_options, &option_index);
 114       if (c == -1)
 115         break;
 116
 117       switch (c)
 118         {
 119         case 0:
 120           printf ("option %s", long_options[option_index].name);
 121           if (optarg)
 122             printf (" with arg %s", optarg);
 123           printf ("\n");
 124           break;
 125
 126         case '0':
 127         case '1':
 128         case '2':
 129         case '3':
 130         case '4':
 131         case '5':
 132         case '6':
 133         case '7':
 134         case '8':
 135         case '9':
 136           if (digit_optind != 0 && 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     {
 168       printf ("non-option ARGV-elements: ");
 169       while (optind < argc)
 170         printf ("%s ", argv[optind++]);
 171       printf ("\n");
 172     }
 173
 174   exit (0);
 175 }
 176
 177 #endif /* TEST */