1 /* @(#)wwclreol.c 8.1 (Berkeley) 6/6/93 */ 2 /* $NetBSD: wwclreol.c,v 1.7 2003/08/07 11:17:37 agc Exp $ */ 3 4 /* 5 * Copyright (c) 1983, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * This code is derived from software contributed to Berkeley by 9 * Edward Wang at The University of California, Berkeley. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted provided that the following conditions 13 * are met: 14 * 1. Redistributions of source code must retain the above copyright 15 * notice, this list of conditions and the following disclaimer. 16 * 2. Redistributions in binary form must reproduce the above copyright 17 * notice, this list of conditions and the following disclaimer in the 18 * documentation and/or other materials provided with the distribution. 19 * 3. 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 "ww.h" 37 #include "tt.h" 38 39 /* 40 * Clear w to the end of line. 41 * If cleared is true, then the screen line has already been cleared. 42 */ 43 void 44 wwclreol1(struct ww *w, int row, int col, char cleared) 45 { 46 int i; 47 48 /* 49 * Clear the buffer right off 50 */ 51 { 52 union ww_char *buf; 53 54 buf = &w->ww_buf[row][col]; 55 for (i = w->ww_b.r - col; --i >= 0;) 56 buf++->c_w = ' '; 57 } 58 59 /* 60 * If can't see it, just return. 61 */ 62 if (row < w->ww_i.t || row >= w->ww_i.b 63 || w->ww_i.r <= 0 || w->ww_i.r <= col) 64 return; 65 66 if (col < w->ww_i.l) 67 col = w->ww_i.l; 68 69 /* 70 * Now fix wwns. 71 */ 72 { 73 union ww_char *s; 74 unsigned char *smap; 75 char *win; 76 77 i = col; 78 smap = &wwsmap[row][i]; 79 s = &wwns[row][i]; 80 win = &w->ww_win[row][i]; 81 for (i = w->ww_i.r - i; --i >= 0;) 82 if (*smap++ == w->ww_index) 83 s++->c_w = ' ' | *win++ << WWC_MSHIFT; 84 else 85 s++, win++; 86 } 87 if (!cleared) 88 wwtouched[row] |= WWU_TOUCHED; 89 } 90