1 /* $NetBSD: wwclreol.c,v 1.7 2003/08/07 11:17:37 agc Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * Edward Wang at The University of California, Berkeley. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 #include <sys/cdefs.h> 36 #ifndef lint 37 #if 0 38 static char sccsid[] = "@(#)wwclreol.c 8.1 (Berkeley) 6/6/93"; 39 #else 40 __RCSID("$NetBSD: wwclreol.c,v 1.7 2003/08/07 11:17:37 agc Exp $"); 41 #endif 42 #endif /* not lint */ 43 44 #include "ww.h" 45 #include "tt.h" 46 47 /* 48 * Clear w to the end of line. 49 * If cleared is true, then the screen line has already been cleared. 50 */ 51 void 52 wwclreol1(struct ww *w, int row, int col, char cleared) 53 { 54 int i; 55 56 /* 57 * Clear the buffer right off 58 */ 59 { 60 union ww_char *buf; 61 62 buf = &w->ww_buf[row][col]; 63 for (i = w->ww_b.r - col; --i >= 0;) 64 buf++->c_w = ' '; 65 } 66 67 /* 68 * If can't see it, just return. 69 */ 70 if (row < w->ww_i.t || row >= w->ww_i.b 71 || w->ww_i.r <= 0 || w->ww_i.r <= col) 72 return; 73 74 if (col < w->ww_i.l) 75 col = w->ww_i.l; 76 77 /* 78 * Now fix wwns. 79 */ 80 { 81 union ww_char *s; 82 unsigned char *smap; 83 char *win; 84 85 i = col; 86 smap = &wwsmap[row][i]; 87 s = &wwns[row][i]; 88 win = &w->ww_win[row][i]; 89 for (i = w->ww_i.r - i; --i >= 0;) 90 if (*smap++ == w->ww_index) 91 s++->c_w = ' ' | *win++ << WWC_MSHIFT; 92 else 93 s++, win++; 94 } 95 if (!cleared) 96 wwtouched[row] |= WWU_TOUCHED; 97 } 98