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_H_ 34 #define _GETOPT_H_ 35 36 #include <sys/cdefs.h> 37 38 /* 39 * GNU-like getopt_long()/getopt_long_only() with 4.4BSD optreset extension. 40 * getopt() is declared here too for GNU programs. 41 */ 42 #define no_argument 0 43 #define required_argument 1 44 #define optional_argument 2 45 46 struct option { 47 /* name of long option */ 48 const char *name; 49 /* 50 * one of no_argument, required_argument, and optional_argument: 51 * whether option takes an argument 52 */ 53 int has_arg; 54 /* if not NULL, set *flag to val when option found */ 55 int *flag; 56 /* if flag not NULL, value to set *flag to; else return value */ 57 int val; 58 }; 59 60 __BEGIN_DECLS 61 int getopt_long(int, char * const *, const char *, 62 const struct option *, int *); 63 int getopt_long_only(int, char * const *, const char *, 64 const struct option *, int *); 65 #ifndef _GETOPT_DECLARED 66 #define _GETOPT_DECLARED 67 int getopt(int, char * const [], const char *); 68 69 extern char *optarg; /* getopt(3) external variables */ 70 extern int optind, opterr, optopt; 71 #endif 72 #ifndef _OPTRESET_DECLARED 73 #define _OPTRESET_DECLARED 74 extern int optreset; /* getopt(3) external variable */ 75 #endif 76 __END_DECLS 77 78 #endif /* !_GETOPT_H_ */ 79