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1 office 1 /* $NetBSD: getopt.h,v 1.4 2000/07/07 10:43:54 ad Exp $ */
2 /* $FreeBSD$ */
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_LONG_H_
34 #define _GETOPT_LONG_H_
35  
36 /*
37 * GNU-like getopt_long()/getopt_long_only() with 4.4BSD optreset extension.
38 * getopt() is declared here too for GNU programs.
39 */
40 #define no_argument 0
41 #define required_argument 1
42 #define optional_argument 2
43  
44 struct option {
45 /* name of long option */
46 const char *name;
47 /*
48 * one of no_argument, required_argument, and optional_argument:
49 * whether option takes an argument
50 */
51 int has_arg;
52 /* if not NULL, set *flag to val when option found */
53 int *flag;
54 /* if flag not NULL, value to set *flag to; else return value */
55 int val;
56 };
57  
58 int getopt_long(int, char * const *, const char *,
59 const struct option *, int *);
60 int getopt_long_only(int, char * const *, const char *,
61 const struct option *, int *);
62  
63 extern char *optarg; /* getopt(3) external variables */
64 extern int optind, opterr, optopt;
65  
66 #endif /* !_GETOPT_LONG_H_ */