/**************************************************************************************************
	$Id: getoptstr.c,v 1.11 2005/04/20 16:49:11 bboy Exp $

	Copyright (C) 2002-2005  Don Moore <bboy@bboy.net>

	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 of the License, 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
**************************************************************************************************/

#include "mydnsutil.h"


/**************************************************************************************************
	GETOPTSTR
	Given a list of long opts, constructs the opt string automatically, since I always forget to
	update it.
**************************************************************************************************/
char *
getoptstr(struct option const longopts[])
{
	static char optstr[128];
	char *c;
	register int n, opts;

	/* Count number of options */
	for (opts = 0; longopts[opts].name; opts++)
		;

	/* Allocate optstr */
	memset(optstr, 0, sizeof(optstr));

	/* Build optstr */
	for (c = optstr, n = 0; n < opts && c - optstr < sizeof(optstr)-1; n++)
	{
		if (longopts[n].val)
		{
			*c++ = longopts[n].val;
			if (longopts[n].has_arg == required_argument)
				*c++ = ':';
			else if (longopts[n].has_arg == optional_argument)
			{
				*c++ = ':';
				*c++ = ':';
			}
		}
	}
	return (optstr);
}
/*--- getoptstr() -------------------------------------------------------------------------------*/

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