clrtobot.c revision 1.3
1/* 2 * Copyright (c) 1981 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34#ifndef lint 35/*static char sccsid[] = "from: @(#)clrtobot.c 5.5 (Berkeley) 6/1/90";*/ 36static char rcsid[] = "$Id: clrtobot.c,v 1.3 1993/08/01 18:35:52 mycroft Exp $"; 37#endif /* not lint */ 38 39# include "curses.ext" 40 41/* 42 * This routine erases everything on the window. 43 * 44 */ 45wclrtobot(win) 46reg WINDOW *win; { 47 48 reg int y; 49 reg chtype *sp, *end, *maxx; 50 reg int startx, minx; 51 52 startx = win->_curx; 53 for (y = win->_cury; y < win->_maxy; y++) { 54 minx = _NOCHANGE; 55 end = &win->_y[y][win->_maxx]; 56 for (sp = &win->_y[y][startx]; sp < end; sp++) 57 if (*sp != ' ') { 58 maxx = sp; 59 if (minx == _NOCHANGE) 60 minx = sp - win->_y[y]; 61 *sp = ' '; 62 } 63 if (minx != _NOCHANGE) 64 touchline(win, y, minx, maxx - &win->_y[y][0]); 65 startx = 0; 66 } 67} 68