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/* Utility to accept --help and --version options as unobtrusively as possible.
Copyright (C) 1993 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., 675 Mass Ave, Cambridge, MA 02139, USA. */
/* Jim Meyering (meyering@comco.com) */
#ifdef HAVE_CONFIG_H
#if defined (CONFIG_BROKETS)
/* We use <config.h> instead of "config.h" so that a compilation
using -I. -I$srcdir will use ./config.h rather than $srcdir/config.h
(which it would do because it found this file in $srcdir). */
#include <config.h>
#else
#include "config.h"
#endif
#endif
#include <stdio.h>
#include <getopt.h>
#include <sys/types.h>
#include "system.h"
#include "version.h"
#include "long-options.h"
static 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 `--'. */
void
parse_long_options (argc, argv, usage)
int argc;
char **argv;
void (*usage)();
{
int c;
int saved_opterr;
int saved_optind;
saved_opterr = opterr;
saved_optind = optind;
/* Don't print an error message for unrecognized options. */
opterr = 0;
if (argc == 2
&& (c = getopt_long (argc, argv, "+", long_options, (int *) 0)) != EOF)
{
switch (c)
{
case 'h':
usage (0);
case 'v':
printf ("%s\n", version_string);
exit (0);
default:
/* Don't process any other long-named options. */
break;
}
}
/* Restore previous value. */
opterr = saved_opterr;
/* Restore optind in case it has advanced past a leading `--'. */
optind = saved_optind;
}
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