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  1. /* getopt_long and getopt_long_only entry points for GNU getopt.
  2.    Copyright (C) 1987,88,89,90,91,92,93,94,96,97,98,2005
  3.      Free Software Foundation, Inc.
  4.  
  5.    NOTE: This source is derived from an old version taken from the GNU C
  6.    Library (glibc).
  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
  19.    along with this program; if not, write to the Free Software
  20.    Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301,
  21.    USA.  */
  23. #ifdef HAVE_CONFIG_H
  24. #include <config.h>
  25. #endif
  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. #include "getopt.h"
  38.  
  39. /* Comment out all this code if we are using the GNU C Library, and are not
  40.    actually compiling the library itself.  This code is part of the GNU C
  41.    Library, but also included in many other GNU distributions.  Compiling
  42.    and linking in this code is a waste when using the GNU C library
  43.    (especially if it is a shared library).  Rather than having every GNU
  44.    program understand `configure --with-gnu-libc' and omit the object files,
  45.    it is simpler to just do this in the source for each such file.  */
  46.  
  47. #define GETOPT_INTERFACE_VERSION 2
  48. #if !defined _LIBC && defined __GLIBC__ && __GLIBC__ >= 2
  49. #include <gnu-versions.h>
  50. #if _GNU_GETOPT_INTERFACE_VERSION == GETOPT_INTERFACE_VERSION
  51. #define ELIDE_CODE
  52. #endif
  53. #endif
  54.  
  55. #ifndef ELIDE_CODE
  56.  
  57.  
  58. /* This needs to come after some library #include
  59.    to get __GNU_LIBRARY__ defined.  */
  60. #ifdef __GNU_LIBRARY__
  61. #include <stdlib.h>
  62. #endif
  63.  
  64. #ifndef NULL
  65. #define NULL 0
  66. #endif
  67.  
  68. int
  69. getopt_long (int argc,  char *const *argv,  const char *options,
  70.              const struct option *long_options, int *opt_index)
  71. {
  72.   return _getopt_internal (argc, argv, options, long_options, opt_index, 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
  81. getopt_long_only (int argc, char *const *argv, const char *options,
  82.                   const struct option *long_options, int *opt_index)
  83. {
  84.   return _getopt_internal (argc, argv, options, long_options, opt_index, 1);
  85. }
  86.  
  87.  
  88. #endif  /* Not ELIDE_CODE.  */
  90. #ifdef TEST
  91.  
  92. #include <stdio.h>
  93.  
  94. int
  95. main (int argc, char **argv)
  96. {
  97.   int c;
  98.   int digit_optind = 0;
  99.  
  100.   while (1)
  101.     {
  102.       int this_option_optind = optind ? optind : 1;
  103.       int option_index = 0;
  104.       static struct option long_options[] =
  105.       {
  106.         {"add", 1, 0, 0},
  107.         {"append", 0, 0, 0},
  108.         {"delete", 1, 0, 0},
  109.         {"verbose", 0, 0, 0},
  110.         {"create", 0, 0, 0},
  111.         {"file", 1, 0, 0},
  112.         {0, 0, 0, 0}
  113.       };
  114.  
  115.       c = getopt_long (argc, argv, "abc:d:0123456789",
  116.                        long_options, &option_index);
  117.       if (c == -1)
  118.         break;
  119.  
  120.       switch (c)
  121.         {
  122.         case 0:
  123.           printf ("option %s", long_options[option_index].name);
  124.           if (optarg)
  125.             printf (" with arg %s", optarg);
  126.           printf ("\n");
  127.           break;
  128.  
  129.         case '0':
  130.         case '1':
  131.         case '2':
  132.         case '3':
  133.         case '4':
  134.         case '5':
  135.         case '6':
  136.         case '7':
  137.         case '8':
  138.         case '9':
  139.           if (digit_optind != 0 && digit_optind != this_option_optind)
  140.             printf ("digits occur in two different argv-elements.\n");
  141.           digit_optind = this_option_optind;
  142.           printf ("option %c\n", c);
  143.           break;
  144.  
  145.         case 'a':
  146.           printf ("option a\n");
  147.           break;
  148.  
  149.         case 'b':
  150.           printf ("option b\n");
  151.           break;
  152.  
  153.         case 'c':
  154.           printf ("option c with value `%s'\n", optarg);
  155.           break;
  156.  
  157.         case 'd':
  158.           printf ("option d with value `%s'\n", optarg);
  159.           break;
  160.  
  161.         case '?':
  162.           break;
  163.  
  164.         default:
  165.           printf ("?? getopt returned character code 0%o ??\n", c);
  166.         }
  167.     }
  168.  
  169.   if (optind < argc)
  170.     {
  171.       printf ("non-option ARGV-elements: ");
  172.       while (optind < argc)
  173.         printf ("%s ", argv[optind++]);
  174.       printf ("\n");
  175.     }
  176.  
  177.   exit (0);
  178. }
  179.  
  180. #endif /* TEST */
  181.