NetBSD/lib/libcurses/clrtobot.c

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1993-03-21 12:45:37 +03:00
/*
* Copyright (c) 1981 Regents of the University of California.
* All rights reserved.
*
* 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.
*/
#ifndef lint
static char sccsid[] = "@(#)clrtobot.c 5.5 (Berkeley) 6/1/90";
#endif /* not lint */
# include "curses.ext"
/*
* This routine erases everything on the window.
*
*/
wclrtobot(win)
reg WINDOW *win; {
reg int y;
reg char *sp, *end, *maxx;
reg int startx, minx;
startx = win->_curx;
for (y = win->_cury; y < win->_maxy; y++) {
minx = _NOCHANGE;
end = &win->_y[y][win->_maxx];
for (sp = &win->_y[y][startx]; sp < end; sp++)
if (*sp != ' ') {
maxx = sp;
if (minx == _NOCHANGE)
minx = sp - win->_y[y];
*sp = ' ';
}
if (minx != _NOCHANGE)
touchline(win, y, minx, maxx - &win->_y[y][0]);
startx = 0;
}
}