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[dragonfly.git] / include / getopt.h
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984168ec 1/* $NetBSD: getopt.h,v 1.5 2003/04/28 23:16:13 bjh21 Exp $ */
6fb80e22 2/* $DragonFly: src/include/getopt.h,v 1.2 2005/01/10 16:45:15 joerg Exp $ */
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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#define no_argument 0
50#define required_argument 1
51#define optional_argument 2
52
53struct option {
54 /* name of long option */
55 const char *name;
56 /*
57 * one of no_argument, required_argument, and optional_argument:
58 * whether option takes an argument
59 */
60 int has_arg;
61 /* if not NULL, set *flag to val when option found */
62 int *flag;
63 /* if flag not NULL, value to set *flag to; else return value */
64 int val;
65};
66
67__BEGIN_DECLS
68int getopt_long(int, char * const *, const char *,
69 const struct option *, int *);
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70int getopt_long_only(int, char * const *, const char *,
71 const struct option *, int *);
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72__END_DECLS
73
74#endif /* !_GETOPT_H_ */