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  1. /* Utility to accept --help and --version options as unobtrusively as possible.
  2.  
  3.    Copyright (C) 1993-1994, 1998-2000, 2002-2006, 2009-2016 Free Software
  4.    Foundation, Inc.
  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 3 of the License, or
  9.    (at your option) 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
  17.    along with this program.  If not, see <http://w...content-available-to-author-only...u.org/licenses/>.  */
  18.  
  19. /* Written by Jim Meyering.  */
  20.  
  21. #include <config.h>
  22.  
  23. /* Specification.  */
  24. #include "long-options.h"
  25.  
  26. #include <stdarg.h>
  27. #include <stdio.h>
  28. #include <stdlib.h>
  29. #include <getopt.h>
  30.  
  31. #include "version-etc.h"
  32.  
  33. static struct option const long_options[] =
  34. {
  35.   {"help", no_argument, NULL, 'h'},
  36.   {"version", no_argument, NULL, 'v'},
  37.   {NULL, 0, NULL, 0}
  38. };
  39.  
  40. /* Process long options --help and --version, but only if argc == 2.
  41.    Be careful not to gobble up "--".  */
  42.  
  43. void
  44. parse_long_options (int argc,
  45.                     char **argv,
  46.                     const char *command_name,
  47.                     const char *package,
  48.                     const char *version,
  49.                     void (*usage_func) (int),
  50.                     /* const char *author1, ...*/ ...)
  51. {
  52.   int c;
  53.   int saved_opterr;
  54.  
  55.   saved_opterr = opterr;
  56.  
  57.   /* Don't print an error message for unrecognized options.  */
  58.   opterr = 0;
  59.  
  60.   if (argc == 2
  61.       && (c = getopt_long (argc, argv, "+", long_options, NULL)) != -1)
  62.     {
  63.       switch (c)
  64.         {
  65.         case 'h':
  66.           (*usage_func) (EXIT_SUCCESS);
  67.           break;
  68.  
  69.         case 'v':
  70.           {
  71.             va_list authors;
  72.             va_start (authors, usage_func);
  73.             version_etc_va (stdout, command_name, package, version, authors);
  74.             exit (0);
  75.           }
  76.  
  77.         default:
  78.           /* Don't process any other long-named options.  */
  79.           break;
  80.         }
  81.     }
  82.  
  83.   /* Restore previous value.  */
  84.   opterr = saved_opterr;
  85.  
  86.   /* Reset this to zero so that getopt internals get initialized from
  87.      the probably-new parameters when/if getopt is called later.  */
  88.   optind = 0;
  89. }
  90.  
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin
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Standard input is empty
compilation info 
prog.c:21:10: fatal error: 'config.h' file not found
#include <config.h>
         ^~~~~~~~~~
1 error generated.
stdout
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Standard output is empty
https://ideone.com/nns5Zt
language:
C (clang 8.0)
created:
6 years ago
visibility:
public

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