1/*	$OpenBSD: getopt.h,v 1.2 2008/06/26 05:42:04 ray 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/*
37 * GNU-like getopt_long() and 4.4BSD getsubopt()/optreset extensions
38 */
39#define no_argument        0
40#define required_argument  1
41#define optional_argument  2
42
43#ifdef __cplusplus
44extern "C" {
45#endif
46
47struct option {
48	/* name of long option */
49	const char *name;
50	/*
51	 * one of no_argument, required_argument, and optional_argument:
52	 * whether option takes an argument
53	 */
54	int has_arg;
55	/* if not NULL, set *flag to val when option found */
56	int *flag;
57	/* if flag not NULL, value to set *flag to; else return value */
58	int val;
59};
60
61int	 getopt_long(int, char * const *, const char *,
62	    const struct option *, int *);
63int	 getopt_long_only(int, char * const *, const char *,
64	    const struct option *, int *);
65#ifndef _GETOPT_DEFINED_
66#define _GETOPT_DEFINED_
67int	 getopt(int, char * const *, const char *);
68int	 getsubopt(char **, char * const *, char **);
69
70extern   char *optarg;                  /* getopt(3) external variables */
71extern   int opterr;
72extern   int optind;
73extern   int optopt;
74extern   int optreset;
75extern   char *suboptarg;               /* getsubopt(3) external variable */
76#endif
77
78#ifdef __cplusplus
79}
80#endif
81
82#endif /* !_GETOPT_H_ */
83