GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libcurses/base/lib_erase.c Lines: 0 15 0.0 %
Date: 2017-11-07 Branches: 0 16 0.0 %

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/* $OpenBSD: lib_erase.c,v 1.3 2010/01/12 23:22:05 nicm Exp $ */
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/****************************************************************************
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 * Copyright (c) 1998,2000,2001 Free Software Foundation, Inc.              *
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 *                                                                          *
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 * Permission is hereby granted, free of charge, to any person obtaining a  *
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 * copy of this software and associated documentation files (the            *
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 * "Software"), to deal in the Software without restriction, including      *
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 * without limitation the rights to use, copy, modify, merge, publish,      *
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 * distribute, distribute with modifications, sublicense, and/or sell       *
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 * copies of the Software, and to permit persons to whom the Software is    *
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 * furnished to do so, subject to the following conditions:                 *
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 *                                                                          *
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 * The above copyright notice and this permission notice shall be included  *
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 * in all copies or substantial portions of the Software.                   *
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 *                                                                          *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
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 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
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 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
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 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
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 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
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 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
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 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
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 *                                                                          *
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 * Except as contained in this notice, the name(s) of the above copyright   *
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 * holders shall not be used in advertising or otherwise to promote the     *
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 * sale, use or other dealings in this Software without prior written       *
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 * authorization.                                                           *
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 ****************************************************************************/
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/****************************************************************************
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 *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
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 *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
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 *     and: Thomas E. Dickey                        1996-on                 *
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 ****************************************************************************/
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/*
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**	lib_erase.c
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**
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**	The routine werase().
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**
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*/
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#include <curses.priv.h>
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MODULE_ID("$Id: lib_erase.c,v 1.3 2010/01/12 23:22:05 nicm Exp $")
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NCURSES_EXPORT(int)
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werase(WINDOW *win)
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{
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    int code = ERR;
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    int y;
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    NCURSES_CH_T blank;
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    NCURSES_CH_T *sp, *end, *start;
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    T((T_CALLED("werase(%p)"), win));
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    if (win) {
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	blank = win->_nc_bkgd;
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	for (y = 0; y <= win->_maxy; y++) {
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	    start = win->_line[y].text;
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	    end = &start[win->_maxx];
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	    /*
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	     * If this is a derived window, we have to handle the case where
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	     * a multicolumn character extends into the window that we are
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	     * erasing.
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	     */
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	    if_WIDEC({
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		if (isWidecExt(start[0])) {
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		    int x = (win->_parent != 0) ? (win->_begx) : 0;
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		    while (x-- > 0) {
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			if (isWidecBase(start[-1])) {
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			    --start;
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			    break;
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			}
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			--start;
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		    }
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		}
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	    });
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	    for (sp = start; sp <= end; sp++)
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		*sp = blank;
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	    win->_line[y].firstchar = 0;
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	    win->_line[y].lastchar = win->_maxx;
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	}
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	win->_curx = win->_cury = 0;
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	win->_flags &= ~_WRAPPED;
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	_nc_synchook(win);
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	code = OK;
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    }
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    returnCode(code);
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}