missings/getopt.h

   1 /*  $NetBSD: getopt.h,v 1.4 2000/07/07 10:43:54 ad Exp $    */
   2 /*  $FreeBSD: src/include/getopt.h,v 1.6.34.1 2010/12/21 17:10:29 kensmith 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
  44 #ifdef __cplusplus
  45 extern "C" {
  46 #endif
  47
  48 /*
  49  * GNU-like getopt_long()/getopt_long_only() with 4.4BSD optreset extension.
  50  * getopt() is declared here too for GNU programs.
  51  */
  52 #define no_argument        0
  53 #define required_argument  1
  54 #define optional_argument  2
  55
  56 struct option {
  57     /* name of long option */
  58     const char *name;
  59     /*
  60      * one of no_argument, required_argument, and optional_argument:
  61      * whether option takes an argument
  62      */
  63     int has_arg;
  64     /* if not NULL, set *flag to val when option found */
  65     int *flag;
  66     /* if flag not NULL, value to set *flag to; else return value */
  67     int val;
  68 };
  69
  70 int getopt_long(int, char * const *, const char *,
  71     const struct option *, int *);
  72 int getopt_long_only(int, char * const *, const char *,
  73     const struct option *, int *);
  74 #ifndef _GETOPT_DECLARED
  75 #define _GETOPT_DECLARED
  76 int  getopt(int, char * const [], const char *);
  77
  78 extern char *optarg;            /* getopt(3) external variables */
  79 extern int optind, opterr, optopt;
  80 #endif
  81 #ifndef _OPTRESET_DECLARED
  82 #define _OPTRESET_DECLARED
  83 extern int optreset;            /* getopt(3) external variable */
  84 #endif
  85
  86 #ifdef __cplusplus
  87 }
  88 #endif
  89
  90 #endif /* !_GETOPT_H_ */