/* $NetBSD: getopt.c,v 1.1 2009/03/22 22:33:13 joerg Exp $*/

/*  Modified by David Anderson to work with GNU/Linux and freebsd.

    Added {} for clarity.

    Switched to standard dwarfdump formatting.

    Treatment of : modified so that :: gets dwoptarg NULL

    if space follows the letter

    (the dwoptarg is set to null).

*/

/*

* Copyright (c) 1987, 1993, 1994

* The Regents of the University of California.  All rights reserved.

*

* Redistribution and use in source and binary forms, with or without

* modification, are permitted provided that the following conditions

* are met:

* 1. Redistributions of source code must retain the above copyright

*    notice, this list of conditions and the following disclaimer.

* 2. Redistributions in binary form must reproduce the above copyright

*    notice, this list of conditions and the following disclaimer in the

*    documentation and/or other materials provided with the distribution.

* 3. Neither the name of the University nor the names of its contributors

*    may be used to endorse or promote products derived from this software

*    without specific prior written permission.

*

* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND

* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

* ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE

* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

* SUCH DAMAGE.

*/

#ifdef __cplusplus

extern "C" {

#endif /* __cplusplus */

extern int  dwopterr;

extern int  dwoptind;

extern int  dwoptopt;

extern int  dwoptreset;

extern char *dwoptarg;

int dwgetopt(int nargc, char * const nargv[], const char *ostr);

/*  As of October 2017 it seems adviseable to allow

    long option names.  So based on a reading of

    'man 3 getopt' we reimplement a portion of GNU getopt_long().

    It's a wonderfully sensible design and all the credit

    should go to the original designers.

    We are not implementing all the features of GNU/Linux

    getopt_long(), just the features we wish to use.

    Specifically, we require val be 0 and flag

    be NULL and ignore those fields.

    We do not implement GNU digit_optind at all.

    Within these restrictions the interface behaves the same

    as GNU getopt_long() (or so it appears from the

    getopt documentation:

    release 4.04 of the Linux man-pages project,

    GETOPT(3),

    http://www.kernel.org/doc/man-pages/).

    */

struct dwoption {

    const char *name;

    int has_arg;

    int *flag;

    int val;

};

#define dwno_argument 0

#define dwrequired_argument 1

#define dwoptional_argument 2

int dwgetopt_long(int nargc, char *const nargv[],

    const char *ostr,

    const struct dwoption* longopts,

    int *longindex);

#ifdef __cplusplus

}

#endif /* __cplusplus */