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 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37 #ifndef lint
38 static char sccsid[] = "@(#)wwclreol.c 8.1 (Berkeley) 6/6/93";
39 static char rcsid[] =
40 "$FreeBSD: head/usr.bin/window/wwclreol.c 76736 2001-05-17 09:38:49Z obrien $";
41 #endif /* not lint */
42
43 #include "ww.h"
44 #include "tt.h"
45
46 /*
47 * Clear w to the end of line.
48 * If cleared is true, then the screen line has already been cleared.
49 */
wwclreol1(w,row,col,cleared)50 wwclreol1(w, row, col, cleared)
51 register struct ww *w;
52 int row, col;
53 char cleared;
54 {
55 register i;
56
57 /*
58 * Clear the buffer right off
59 */
60 {
61 register union ww_char *buf;
62
63 buf = &w->ww_buf[row][col];
64 for (i = w->ww_b.r - col; --i >= 0;)
65 buf++->c_w = ' ';
66 }
67
68 /*
69 * If can't see it, just return.
70 */
71 if (row < w->ww_i.t || row >= w->ww_i.b
72 || w->ww_i.r <= 0 || w->ww_i.r <= col)
73 return;
74
75 if (col < w->ww_i.l)
76 col = w->ww_i.l;
77
78 /*
79 * Now fix wwns.
80 */
81 {
82 register union ww_char *s;
83 register char *smap, *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