90 lines
3.1 KiB
C
90 lines
3.1 KiB
C
/* $NetBSD: getopt.h,v 1.4 2000/07/07 10:43:54 ad Exp $ */
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/* $FreeBSD$ */
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/*-
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* Copyright (c) 2000 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Dieter Baron and Thomas Klausner.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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/**
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* @file getopt.h
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* @brief The getopt() and getopt_long() functions.
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*/
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#include <sys/cdefs.h>
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#include <bits/getopt.h>
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/** A `has_arg` value for `struct option`. */
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#define no_argument 0
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/** A `has_arg` value for `struct option`. */
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#define required_argument 1
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/** A `has_arg` value for `struct option`. */
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#define optional_argument 2
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struct option {
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/**
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* Name of long option. Options must have a non-NULL name.
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* A NULL name signals the end of the options array.
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*/
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const char * _Nullable name;
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/**
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* One of `no_argument`, `required_argument`, or `optional_argument`.
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*/
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int has_arg;
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/** If not NULL, set `*flag` to val when option found. */
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int* _Nullable flag;
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/** If `flag` not NULL, the value to assign to `*flag`; otherwise the return value. */
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int val;
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};
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__BEGIN_DECLS
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/**
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* [getopt_long(3)](http://man7.org/linux/man-pages/man3/getopt.3.html) parses command-line options.
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*/
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int getopt_long(int __argc, char* _Nonnull const* _Nonnull __argv, const char* _Nonnull __options, const struct option* _Nonnull __long_options, int* _Nullable __long_index);
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/**
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* [getopt_long_only(3)](http://man7.org/linux/man-pages/man3/getopt.3.html) parses command-line options.
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*/
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int getopt_long_only(int __argc, char* _Nonnull const* _Nonnull __argv, const char* _Nonnull __options, const struct option* _Nonnull __long_options, int* _Nullable __long_index);
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#ifndef _OPTRESET_DECLARED
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#define _OPTRESET_DECLARED
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/**
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* Must be set to 1 to reset the `getopt` functions before scanning a new argument vector.
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*/
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extern int optreset;
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#endif
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__END_DECLS
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