/***************************************************************/
/*                                                             */
/* mygetopt.cpp                                                */
/* Copyright (C) 1989,90,91,92,93,94,96,97                     */
/*                              Free Software Foundation, Inc. */
/*                                                             */
/* (c)1999-2024 | Juraj Vidéky | videky@breviar.sk             */
/*                                                             */
/***************************************************************/

#include "vstudio.h"

#ifndef __GETOPT_H_
#define __GETOPT_H_

#include <stdio.h>

/* Declarations for getopt.
	Copyright (C) 1989,90,91,92,93,94,96,97 Free Software Foundation, Inc.

NOTE: The canonical source of this file is maintained with the GNU C Library.
Bugs can be reported to bug-glibc@prep.ai.mit.edu.

This program is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2, or (at your option) any
later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
USA.  */

#ifdef	__cplusplus
extern "C" {
#endif

/* For communication from `getopt' to the caller.
   When `getopt' finds an option that takes an argument,
   the argument value is returned here.
   Also, when `ordering' is RETURN_IN_ORDER,
   each non-option ARGV-element is returned here.  */

extern
const char* optarg;

/* Index in ARGV of the next element to be scanned.
	This is used for communication to and from the caller
	and for communication between successive calls to `getopt'.

	On entry to `getopt', zero means this is the first call; initialize.

	When `getopt' returns -1, this is the index of the first of the
	non-option elements that the caller should itself scan.

	Otherwise, `optind' communicates from one call to the next
	how much of ARGV has been scanned so far.  */

extern
int optind;

/* Callers store zero here to inhibit the error message `getopt' prints
	for unrecognized options.  */

extern
int opterr;

/* Set to an option character which was unrecognized.  */

extern
int optopt;

/* Describe the long-named options requested by the application.
	The LONG_OPTIONS argument to getopt_long or getopt_long_only is a vector
	of `struct option' terminated by an element containing a name which is
	zero.

   The field `has_arg' is:
   no_argument		(or 0) if the option does not take an argument,
   required_argument	(or 1) if the option requires an argument,
   optional_argument 	(or 2) if the option takes an optional argument.

   If the field `flag' is not NULL, it points to a variable that is set
   to the value given in the field `val' when the option is found, but
   left unchanged if the option is not found.

   To have a long-named option do something other than set an `int' to
   a compiled-in constant, such as set a value from `optarg', set the
   option's `flag' field to zero and its `val' field to a nonzero
   value (the equivalent single-letter option character, if there is
   one).  For long options that have a zero `flag' field, `getopt'
   returns the contents of the `val' field.  */

struct option
{
  char *name;
  /* has_arg can't be an enum because some compilers complain about
     type mismatches in all the code that assumes it is an int.  */
  int has_arg;
  int *flag;
  int val;
};

/* Names for the values of the `has_arg' field of `struct option'.  */

#define no_argument		0
#define required_argument	1
#define optional_argument	2

#ifdef	__cplusplus
}
#endif

// added by JUV
int getopt(
	int argc,
	const char* const *argv,
	const char* optstring);

#endif /* __GETOPT_H_ */