1 /* $NetBSD: clrtobot.c,v 1.8 1997/07/22 07:36:27 mikel Exp $ */ 2 3 /* 4 * Copyright (c) 1981, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "@(#)clrtobot.c 8.2 (Berkeley) 5/4/94"; 40 #else 41 __RCSID("$NetBSD: clrtobot.c,v 1.8 1997/07/22 07:36:27 mikel Exp $"); 42 #endif 43 #endif /* not lint */ 44 45 #include "curses.h" 46 47 /* 48 * wclrtobot -- 49 * Erase everything on the window. 50 */ 51 int 52 wclrtobot(win) 53 register WINDOW *win; 54 { 55 register int minx, startx, starty, y; 56 register __LDATA *sp, *end, *maxx; 57 58 #ifdef __GNUC__ 59 maxx = NULL; /* XXX gcc -Wuninitialized */ 60 #endif 61 if (win->lines[win->cury]->flags & __ISPASTEOL) { 62 starty = win->cury + 1; 63 startx = 0; 64 } else { 65 starty = win->cury; 66 startx = win->curx; 67 } 68 for (y = starty; y < win->maxy; y++) { 69 minx = -1; 70 end = &win->lines[y]->line[win->maxx]; 71 for (sp = &win->lines[y]->line[startx]; sp < end; sp++) 72 if (sp->ch != ' ' || sp->attr != 0) { 73 maxx = sp; 74 if (minx == -1) 75 minx = sp - win->lines[y]->line; 76 sp->ch = ' '; 77 sp->attr = 0; 78 } 79 if (minx != -1) 80 __touchline(win, y, minx, maxx - win->lines[y]->line, 81 0); 82 startx = 0; 83 } 84 return (OK); 85 } 86