1 /* $NetBSD: getopt.h,v 1.4 2000/07/07 10:43:54 ad Exp $ */ 2 /* $FreeBSD$ */ 3 4 /*- 5 * SPDX-License-Identifier: BSD-2-Clause 6 * 7 * Copyright (c) 2000 The NetBSD Foundation, Inc. 8 * All rights reserved. 9 * 10 * This code is derived from software contributed to The NetBSD Foundation 11 * by Dieter Baron and Thomas Klausner. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 24 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 25 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 26 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 32 * POSSIBILITY OF SUCH DAMAGE. 33 */ 34 35 #ifndef _GETOPT_H_ 36 #define _GETOPT_H_ 37 38 #include <sys/cdefs.h> 39 40 /* 41 * GNU-like getopt_long()/getopt_long_only() with 4.4BSD optreset extension. 42 * getopt() is declared here too for GNU programs. 43 */ 44 #define no_argument 0 45 #define required_argument 1 46 #define optional_argument 2 47 48 struct option { 49 /* name of long option */ 50 const char *name; 51 /* 52 * one of no_argument, required_argument, and optional_argument: 53 * whether option takes an argument 54 */ 55 int has_arg; 56 /* if not NULL, set *flag to val when option found */ 57 int *flag; 58 /* if flag not NULL, value to set *flag to; else return value */ 59 int val; 60 }; 61 62 __BEGIN_DECLS 63 int getopt_long(int, char * const *, const char *, 64 const struct option *, int *); 65 int getopt_long_only(int, char * const *, const char *, 66 const struct option *, int *); 67 #ifndef _GETOPT_DECLARED 68 #define _GETOPT_DECLARED 69 int getopt(int, char * const [], const char *); 70 71 extern char *optarg; /* getopt(3) external variables */ 72 extern int optind, opterr, optopt; 73 #endif 74 #ifndef _OPTRESET_DECLARED 75 #define _OPTRESET_DECLARED 76 extern int optreset; /* getopt(3) external variable */ 77 #endif 78 __END_DECLS 79 80 #endif /* !_GETOPT_H_ */ 81