1/*	$OpenBSD: getopt.h,v 1.3 2013/11/22 21:32:49 millert Exp $	*/
2/*	$NetBSD: getopt.h,v 1.4 2000/07/07 10:43:54 ad Exp $	*/
3
4/*-
5 * Copyright (c) 2000 The NetBSD Foundation, Inc.
6 * All rights reserved.
7 *
8 * This code is derived from software contributed to The NetBSD Foundation
9 * by Dieter Baron and Thomas Klausner.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 *    notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 *    notice, this list of conditions and the following disclaimer in the
18 *    documentation and/or other materials provided with the distribution.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#ifndef _GETOPT_H_
34#define _GETOPT_H_
35
36#include <sys/cdefs.h>
37
38/*
39 * GNU-like getopt_long()
40 */
41#define no_argument        0
42#define required_argument  1
43#define optional_argument  2
44
45struct option {
46	/* name of long option */
47	const char *name;
48	/*
49	 * one of no_argument, required_argument, and optional_argument:
50	 * whether option takes an argument
51	 */
52	int has_arg;
53	/* if not NULL, set *flag to val when option found */
54	int *flag;
55	/* if flag not NULL, value to set *flag to; else return value */
56	int val;
57};
58
59__BEGIN_DECLS
60int	 getopt_long(int, char * const *, const char *,
61	    const struct option *, int *);
62int	 getopt_long_only(int, char * const *, const char *,
63	    const struct option *, int *);
64#ifndef _GETOPT_DEFINED_
65#define _GETOPT_DEFINED_
66int	 getopt(int, char * const *, const char *);
67
68extern   char *optarg;                  /* getopt(3) external variables */
69extern   int opterr;
70extern   int optind;
71extern   int optopt;
72extern   int optreset;
73#endif
74__END_DECLS
75
76#endif /* !_GETOPT_H_ */
77