1 /* Utility to accept --help and --version options as unobtrusively as possible.
2 Copyright (C) 1993, 1994 Free Software Foundation, Inc.
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2, or (at your option)
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
18 /* Jim Meyering (meyering@comco.com) */
21 * $DragonFly: src/gnu/usr.bin/sort/long-options.c,v 1.2 2007/11/25 01:28:22 swildner Exp $
31 #include "long-options.h"
33 static struct option
const long_options
[] =
35 {"help", no_argument
, 0, 'h'},
36 {"version", no_argument
, 0, 'v'},
40 /* Process long options --help and --version, but only if argc == 2.
41 Be careful not to gobble up `--'. */
44 parse_long_options (argc
, argv
, command_name
, version_string
, usage
)
47 const char *command_name
;
48 const char *version_string
;
55 saved_opterr
= opterr
;
56 saved_optind
= optind
;
58 /* Don't print an error message for unrecognized options. */
62 && (c
= getopt_long (argc
, argv
, "+", long_options
, (int *) 0)) != EOF
)
70 printf ("%s - %s\n", command_name
, version_string
);
74 /* Don't process any other long-named options. */
79 /* Restore previous value. */
80 opterr
= saved_opterr
;
82 /* Restore optind in case it has advanced past a leading `--'. */
83 optind
= saved_optind
;