NetBSD/lib/libcurses/clrtobot.c

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/* $NetBSD: clrtobot.c,v 1.10 1999/04/13 14:08:17 mrg Exp $ */
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/*
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* Copyright (c) 1981, 1993, 1994
* The Regents of the University of California. All rights reserved.
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*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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.
*/
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)clrtobot.c 8.2 (Berkeley) 5/4/94";
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#else
__RCSID("$NetBSD: clrtobot.c,v 1.10 1999/04/13 14:08:17 mrg Exp $");
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#endif
#endif /* not lint */
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#include "curses.h"
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/*
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* wclrtobot --
* Erase everything on the window.
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*/
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int
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wclrtobot(win)
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WINDOW *win;
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{
int minx, startx, starty, y;
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__LDATA *sp, *end, *maxx;
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#ifdef __GNUC__
maxx = NULL; /* XXX gcc -Wuninitialized */
#endif
if (win->lines[win->cury]->flags & __ISPASTEOL) {
starty = win->cury + 1;
startx = 0;
} else {
starty = win->cury;
startx = win->curx;
}
for (y = starty; y < win->maxy; y++) {
minx = -1;
end = &win->lines[y]->line[win->maxx];
for (sp = &win->lines[y]->line[startx]; sp < end; sp++)
if (sp->ch != ' ' || sp->attr != 0) {
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maxx = sp;
if (minx == -1)
minx = sp - win->lines[y]->line;
sp->ch = ' ';
sp->attr = 0;
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}
if (minx != -1)
__touchline(win, y, minx, maxx - win->lines[y]->line,
0);
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startx = 0;
}
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return (OK);
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}