/*	$OpenBSD: lib_redrawln.c,v 1.3 1998/10/31 06:30:30 millert Exp $	*/

/****************************************************************************
 * Copyright (c) 1998 Free Software Foundation, Inc.                        *
 *                                                                          *
 * Permission is hereby granted, free of charge, to any person obtaining a  *
 * copy of this software and associated documentation files (the            *
 * "Software"), to deal in the Software without restriction, including      *
 * without limitation the rights to use, copy, modify, merge, publish,      *
 * distribute, distribute with modifications, sublicense, and/or sell       *
 * copies of the Software, and to permit persons to whom the Software is    *
 * furnished to do so, subject to the following conditions:                 *
 *                                                                          *
 * The above copyright notice and this permission notice shall be included  *
 * in all copies or substantial portions of the Software.                   *
 *                                                                          *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
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 ****************************************************************************/

/****************************************************************************
 *  Author: Thomas E. Dickey <dickey@clark.net> 1997                        *
 ****************************************************************************/

/*
 *	lib_redrawln.c
 *
 *	The routine wredrawln().
 *
 */

#include <curses.priv.h>

MODULE_ID("$From: lib_redrawln.c,v 1.7 1998/09/19 20:09:50 Alexander.V.Lukyanov Exp $")

int wredrawln(WINDOW *win, int beg, int num)
{
	int i;
	int end;
	size_t len = (win->_maxx + 1) * sizeof(chtype);

	T((T_CALLED("wredrawln(%p,%d,%d)"), win, beg, num));

	if (beg < 0)
		beg = 0;

	if (touchline (win, beg, num) == ERR)
		returnCode(ERR);

	end = beg + num;
	if (end > win->_maxy + 1)
		end = win->_maxy + 1;

	for (i = beg; i < end; i++)
	{
		memset (curscr->_line[i+win->_begy].text+win->_begx, 0, len);
		_nc_make_oldhash(i+win->_begy);
	}

	returnCode(OK);
}