1/*	$NetBSD: getopt.h,v 1.4 2000/07/07 10:43:54 ad Exp $	*/
2
3/*-
4 * SPDX-License-Identifier: BSD-2-Clause
5 *
6 * Copyright (c) 2000 The NetBSD Foundation, Inc.
7 * All rights reserved.
8 *
9 * This code is derived from software contributed to The NetBSD Foundation
10 * by Dieter Baron and Thomas Klausner.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 *    notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 *    notice, this list of conditions and the following disclaimer in the
19 *    documentation and/or other materials provided with the distribution.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
24 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
31 * POSSIBILITY OF SUCH DAMAGE.
32 */
33
34#ifndef _GETOPT_H_
35#define _GETOPT_H_
36
37#include <sys/cdefs.h>
38
39/*
40 * GNU-like getopt_long()/getopt_long_only() with 4.4BSD optreset extension.
41 * getopt() is declared here too for GNU programs.
42 */
43#define no_argument        0
44#define required_argument  1
45#define optional_argument  2
46
47struct option {
48	/* name of long option */
49	const char *name;
50	/*
51	 * one of no_argument, required_argument, and optional_argument:
52	 * whether option takes an argument
53	 */
54	int has_arg;
55	/* if not NULL, set *flag to val when option found */
56	int *flag;
57	/* if flag not NULL, value to set *flag to; else return value */
58	int val;
59};
60
61__BEGIN_DECLS
62int	getopt_long(int, char * const *, const char *,
63	const struct option *, int *);
64int	getopt_long_only(int, char * const *, const char *,
65	const struct option *, int *);
66#ifndef _GETOPT_DECLARED
67#define	_GETOPT_DECLARED
68int	 getopt(int, char * const [], const char *);
69
70extern char *optarg;			/* getopt(3) external variables */
71extern int optind, opterr, optopt;
72#endif
73#ifndef _OPTRESET_DECLARED
74#define	_OPTRESET_DECLARED
75extern int optreset;			/* getopt(3) external variable */
76#endif
77__END_DECLS
78
79#endif /* !_GETOPT_H_ */
80