1 /* 2 * Copyright (c) 1983 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms are permitted 6 * provided that the above copyright notice and this paragraph are 7 * duplicated in all such forms and that any documentation, 8 * advertising materials, and other materials related to such 9 * distribution and use acknowledge that the software was developed 10 * by the University of California, Berkeley. The name of the 11 * University may not be used to endorse or promote products derived 12 * from this software without specific prior written permission. 13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 15 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 16 */ 17 18 #ifndef lint 19 static char sccsid[] = "@(#)wwclreol.c 3.18 (Berkeley) 08/04/88"; 20 #endif /* not lint */ 21 22 #include "ww.h" 23 #include "tt.h" 24 25 /* 26 * Clear w to the end of line. 27 * If cleared is true, then the screen line has already been cleared. 28 */ 29 wwclreol1(w, row, col, cleared) 30 register struct ww *w; 31 int row, col; 32 char cleared; 33 { 34 register i; 35 36 /* 37 * Clear the buffer right off 38 */ 39 { 40 register union ww_char *buf; 41 42 buf = &w->ww_buf[row][col]; 43 for (i = w->ww_b.r - col; --i >= 0;) 44 buf++->c_w = ' '; 45 } 46 47 /* 48 * If can't see it, just return. 49 */ 50 if (row < w->ww_i.t || row >= w->ww_i.b 51 || w->ww_i.r <= 0 || w->ww_i.r <= col) 52 return; 53 54 if (col < w->ww_i.l) 55 col = w->ww_i.l; 56 57 /* 58 * Now fix wwns. 59 */ 60 { 61 register union ww_char *s; 62 register char *smap, *win; 63 64 i = col; 65 smap = &wwsmap[row][i]; 66 s = &wwns[row][i]; 67 win = &w->ww_win[row][i]; 68 for (i = w->ww_i.r - i; --i >= 0;) 69 if (*smap++ == w->ww_index) 70 s++->c_w = ' ' | *win++ << WWC_MSHIFT; 71 else 72 s++, win++; 73 } 74 if (!cleared) 75 wwtouched[row] |= WWU_TOUCHED; 76 } 77