getopt.h revision 126155 
1/*	$NetBSD: getopt.h,v 1.4 2000/07/07 10:43:54 ad Exp $	*/
2/*	$FreeBSD: head/include/getopt.h 126155 2004-02-23 08:14:18Z ache $ */
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
45/*
46 * GNU-like getopt_long() with 4.4BSD optreset extension.
47 * getopt() is declared here too for GNU programs.
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 *);
70#ifndef _GETOPT_DECLARED
71#define	_GETOPT_DECLARED
72int	 getopt(int, char * const [], const char *);
73
74extern char *optarg;			/* getopt(3) external variables */
75extern int optind, opterr, optopt;
76#endif
77#ifndef _OPTRESET_DECLARED
78#define	_OPTRESET_DECLARED
79extern int optreset;			/* getopt(3) external variable */
80#endif
81__END_DECLS
82
83#endif /* !_GETOPT_H_ */
84