getopt.h revision 104128 
1/*	$NetBSD: getopt.h,v 1.4 2000/07/07 10:43:54 ad Exp $	*/
2/*	$FreeBSD: head/include/getopt.h 104128 2002-09-29 04:14:37Z eric $ */
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 * 3. All advertising materials mentioning features or use of this software
20 *    must display the following acknowledgement:
21 *        This product includes software developed by the NetBSD
22 *        Foundation, Inc. and its contributors.
23 * 4. Neither the name of The NetBSD Foundation nor the names of its
24 *    contributors may be used to endorse or promote products derived
25 *    from this software without specific prior written permission.
26 *
27 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
28 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
29 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
30 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
31 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
32 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
33 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
34 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
35 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
36 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
37 * POSSIBILITY OF SUCH DAMAGE.
38 */
39
40#ifndef _GETOPT_H_
41#define _GETOPT_H_
42
43#include <sys/cdefs.h>
44#include <unistd.h>
45
46/*
47 * Gnu like getopt_long() and BSD4.4 getsubopt()/optreset extensions
48 */
49#if !defined(_POSIX_SOURCE) && !defined(_XOPEN_SOURCE)
50#define no_argument        0
51#define required_argument  1
52#define optional_argument  2
53
54struct option {
55	/* name of long option */
56	const char *name;
57	/*
58	 * one of no_argument, required_argument, and optional_argument:
59	 * whether option takes an argument
60	 */
61	int has_arg;
62	/* if not NULL, set *flag to val when option found */
63	int *flag;
64	/* if flag not NULL, value to set *flag to; else return value */
65	int val;
66};
67
68__BEGIN_DECLS
69int getopt_long __P((int, char * const *, const char *,
70    const struct option *, int *));
71__END_DECLS
72#endif
73
74#endif /* !_GETOPT_H_ */
75