1 /* $NetBSD: clrtoeol.c,v 1.18 2003/10/05 08:26:02 jdc 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "@(#)clrtoeol.c 8.2 (Berkeley) 5/4/94"; 36 #else 37 __RCSID("$NetBSD: clrtoeol.c,v 1.18 2003/10/05 08:26:02 jdc Exp $"); 38 #endif 39 #endif /* not lint */ 40 41 #include "curses.h" 42 #include "curses_private.h" 43 44 #ifndef _CURSES_USE_MACROS 45 46 /* 47 * clrtoeol -- 48 * Clear up to the end of line. 49 */ 50 int 51 clrtoeol(void) 52 { 53 return wclrtoeol(stdscr); 54 } 55 56 #endif 57 58 /* 59 * wclrtoeol -- 60 * Clear up to the end of line. 61 */ 62 int 63 wclrtoeol(WINDOW *win) 64 { 65 int minx, x, y; 66 __LDATA *end, *maxx, *sp; 67 68 y = win->cury; 69 x = win->curx; 70 if (win->lines[y]->flags & __ISPASTEOL) { 71 if (y < win->maxy - 1) { 72 win->lines[y]->flags &= ~__ISPASTEOL; 73 y++; 74 x = 0; 75 win->cury = y; 76 win->curx = x; 77 } else 78 return (OK); 79 } 80 end = &win->lines[y]->line[win->maxx]; 81 minx = -1; 82 maxx = &win->lines[y]->line[x]; 83 for (sp = maxx; sp < end; sp++) 84 if (sp->ch != ' ' || sp->attr != 0 || 85 sp->bch != win->bch || sp->battr != win->battr) { 86 maxx = sp; 87 if (minx == -1) 88 minx = sp - win->lines[y]->line; 89 sp->ch = ' '; 90 sp->bch = win->bch; 91 sp->attr = 0; 92 sp->battr = win->battr; 93 } 94 #ifdef DEBUG 95 __CTRACE("CLRTOEOL: minx = %d, maxx = %d, firstch = %d, lastch = %d\n", 96 minx, (int) (maxx - win->lines[y]->line), 97 *win->lines[y]->firstchp, *win->lines[y]->lastchp); 98 #endif 99 /* Update firstch and lastch for the line. */ 100 return (__touchline(win, y, x, (int) win->maxx - 1)); 101 } 102