1/*	$NetBSD: getopt.h,v 1.4 2000/07/07 10:43:54 ad Exp $	*/
2/*	$FreeBSD$ */
3
4/*-
5 * SPDX-License-Identifier: BSD-2-Clause-NetBSD
6 *
7 * Copyright (c) 2000 The NetBSD Foundation, Inc.
8 * All rights reserved.
9 *
10 * This code is derived from software contributed to The NetBSD Foundation
11 * by Dieter Baron and Thomas Klausner.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 *    notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 *    notice, this list of conditions and the following disclaimer in the
20 *    documentation and/or other materials provided with the distribution.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
25 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32 * POSSIBILITY OF SUCH DAMAGE.
33 */
34
35#ifndef _GETOPT_H_
36#define _GETOPT_H_
37
38#include <sys/cdefs.h>
39
40/*
41 * GNU-like getopt_long()/getopt_long_only() with 4.4BSD optreset extension.
42 * getopt() is declared here too for GNU programs.
43 */
44#define no_argument        0
45#define required_argument  1
46#define optional_argument  2
47
48struct option {
49	/* name of long option */
50	const char *name;
51	/*
52	 * one of no_argument, required_argument, and optional_argument:
53	 * whether option takes an argument
54	 */
55	int has_arg;
56	/* if not NULL, set *flag to val when option found */
57	int *flag;
58	/* if flag not NULL, value to set *flag to; else return value */
59	int val;
60};
61
62__BEGIN_DECLS
63int	getopt_long(int, char * const *, const char *,
64	const struct option *, int *);
65int	getopt_long_only(int, char * const *, const char *,
66	const struct option *, int *);
67#ifndef _GETOPT_DECLARED
68#define	_GETOPT_DECLARED
69int	 getopt(int, char * const [], const char *);
70
71extern char *optarg;			/* getopt(3) external variables */
72extern int optind, opterr, optopt;
73#endif
74#ifndef _OPTRESET_DECLARED
75#define	_OPTRESET_DECLARED
76extern int optreset;			/* getopt(3) external variable */
77#endif
78__END_DECLS
79
80#endif /* !_GETOPT_H_ */
81