1/* $NetBSD: getopt.h,v 1.4 2000/07/07 10:43:54 ad Exp $ */
2/* $FreeBSD: src/include/getopt.h,v 1.6 2004/02/24 08:09:20 ache 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 * 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 <_bounds.h>
45#include <unistd.h>
46
47_LIBC_SINGLE_BY_DEFAULT()
48
49/*
50 * GNU-like getopt_long()/getopt_long_only() with 4.4BSD optreset extension.
51 * getopt() is declared here too for GNU programs.
52 */
53#define no_argument 0
54#define required_argument 1
55#define optional_argument 2
56
57struct option {
58 /* name of long option */
59 const char *name;
60 /*
61 * one of no_argument, required_argument, and optional_argument:
62 * whether option takes an argument
63 */
64 int has_arg;
65 /* if not NULL, set *flag to val when option found */
66 int *flag;
67 /* if flag not NULL, value to set *flag to; else return value */
68 int val;
69};
70
71__BEGIN_DECLS
72int getopt_long(int __argc, char *_LIBC_CSTR const *_LIBC_COUNT(__argc), const char *,
73 const struct option *, int *);
74int getopt_long_only(int __argc, char * const *_LIBC_COUNT(__argc), const char *,
75 const struct option *, int *);
76#ifndef _GETOPT
77#define _GETOPT
78int getopt(int __argc, char *_LIBC_CSTR const [_LIBC_COUNT(__argc)], const char *) __DARWIN_ALIAS(getopt);
79
80extern char *_LIBC_CSTR optarg; /* getopt(3) external variables */
81extern int optind, opterr, optopt;
82#endif
83#ifndef _OPTRESET
84#define _OPTRESET
85extern int optreset; /* getopt(3) external variable */
86#endif
87__END_DECLS
88
89#endif /* !_GETOPT_H_ */