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