1 /*
2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Edward Wang at The University of California, Berkeley.
7 *
8 * %sccs.include.redist.c%
9 */
10
11 #ifndef lint
12 static char sccsid[] = "@(#)wwclreol.c 8.1 (Berkeley) 06/06/93";
13 #endif /* not lint */
14
15 #include "ww.h"
16 #include "tt.h"
17
18 /*
19 * Clear w to the end of line.
20 * If cleared is true, then the screen line has already been cleared.
21 */
wwclreol1(w,row,col,cleared)22 wwclreol1(w, row, col, cleared)
23 register struct ww *w;
24 int row, col;
25 char cleared;
26 {
27 register i;
28
29 /*
30 * Clear the buffer right off
31 */
32 {
33 register union ww_char *buf;
34
35 buf = &w->ww_buf[row][col];
36 for (i = w->ww_b.r - col; --i >= 0;)
37 buf++->c_w = ' ';
38 }
39
40 /*
41 * If can't see it, just return.
42 */
43 if (row < w->ww_i.t || row >= w->ww_i.b
44 || w->ww_i.r <= 0 || w->ww_i.r <= col)
45 return;
46
47 if (col < w->ww_i.l)
48 col = w->ww_i.l;
49
50 /*
51 * Now fix wwns.
52 */
53 {
54 register union ww_char *s;
55 register char *smap, *win;
56
57 i = col;
58 smap = &wwsmap[row][i];
59 s = &wwns[row][i];
60 win = &w->ww_win[row][i];
61 for (i = w->ww_i.r - i; --i >= 0;)
62 if (*smap++ == w->ww_index)
63 s++->c_w = ' ' | *win++ << WWC_MSHIFT;
64 else
65 s++, win++;
66 }
67 if (!cleared)
68 wwtouched[row] |= WWU_TOUCHED;
69 }
70