1 /* $NetBSD: clrtoeol.c,v 1.16 2002/08/04 14:13:49 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. 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[] = "@(#)clrtoeol.c 8.2 (Berkeley) 5/4/94"; 40 #else 41 __RCSID("$NetBSD: clrtoeol.c,v 1.16 2002/08/04 14:13:49 jdc Exp $"); 42 #endif 43 #endif /* not lint */ 44 45 #include "curses.h" 46 #include "curses_private.h" 47 48 #ifndef _CURSES_USE_MACROS 49 50 /* 51 * clrtoeol -- 52 * Clear up to the end of line. 53 */ 54 int 55 clrtoeol(void) 56 { 57 return wclrtoeol(stdscr); 58 } 59 60 #endif 61 62 /* 63 * wclrtoeol -- 64 * Clear up to the end of line. 65 */ 66 int 67 wclrtoeol(WINDOW *win) 68 { 69 int minx, x, y; 70 __LDATA *end, *maxx, *sp; 71 72 y = win->cury; 73 x = win->curx; 74 if (win->lines[y]->flags & __ISPASTEOL) { 75 if (y < win->maxy - 1) { 76 win->lines[y]->flags &= ~__ISPASTEOL; 77 y++; 78 x = 0; 79 win->cury = y; 80 win->curx = x; 81 } else 82 return (OK); 83 } 84 end = &win->lines[y]->line[win->maxx]; 85 minx = -1; 86 maxx = &win->lines[y]->line[x]; 87 for (sp = maxx; sp < end; sp++) 88 if (sp->ch != ' ' || sp->attr != 0 || 89 sp->bch != win->bch || sp->battr != win->battr) { 90 maxx = sp; 91 if (minx == -1) 92 minx = sp - win->lines[y]->line; 93 sp->ch = ' '; 94 sp->bch = win->bch; 95 sp->attr = 0; 96 sp->battr = win->battr; 97 } 98 #ifdef DEBUG 99 __CTRACE("CLRTOEOL: minx = %d, maxx = %d, firstch = %d, lastch = %d\n", 100 minx, maxx - win->lines[y]->line, *win->lines[y]->firstchp, 101 *win->lines[y]->lastchp); 102 #endif 103 /* Update firstch and lastch for the line. */ 104 return (__touchline(win, y, x, (int) win->maxx - 1)); 105 } 106