/* Utility to accept --help and --version options as unobtrusively as possible.   Copyright (C) 1993, 1994, 1998, 1999, 2000 Free Software Foundation, Inc.   This program is free software; you can redistribute it and/or modify   it under the terms of the GNU General Public License as published by   the Free Software Foundation; either version 2, or (at your option)   any later version.   This program is distributed in the hope that it will be useful,   but WITHOUT ANY WARRANTY; without even the implied warranty of   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the   GNU General Public License for more details.   You should have received a copy of the GNU General Public License   along with this program; if not, write to the Free Software Foundation,   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  *//* Written by Jim Meyering.  */#if HAVE_CONFIG_H# include <config.h>#endif#include <stdio.h>#include <getopt.h>#if HAVE_STDLIB_H# include <stdlib.h>#endif#include "long-options.h"#include "version-etc.h"#if ENABLE_NLS# include <libintl.h># define _(Text) gettext (Text)#else# define _(Text) Text#endifstatic struct option const long_options[] ={  {"help", no_argument, 0, 'h'},  {"version", no_argument, 0, 'v'},  {0, 0, 0, 0}};/* Process long options --help and --version, but only if argc == 2.   Be careful not to gobble up `--'.  */voidparse_long_options (int argc,		    char **argv,		    const char *command_name,		    const char *package,		    const char *version,		    const char *authors,		    void (*usage_func)()){  int c;  int saved_opterr;  saved_opterr = opterr;  /* Don't print an error message for unrecognized options.  */  opterr = 0;  if (argc == 2      && (c = getopt_long (argc, argv, "+", long_options, NULL)) != -1)    {      switch (c)	{	case 'h':	  (*usage_func) (0);	case 'v':	  version_etc (stdout, command_name, package, version, authors);	  exit (0);	default:	  /* Don't process any other long-named options.  */	  break;	}    }  /* Restore previous value.  */  opterr = saved_opterr;  /* Reset this to zero so that getopt internals get initialized from     the probably-new parameters when/if getopt is called later.  */  optind = 0;}