Annotation of src/usr.bin/window/wwclreol.c, Revision 1.1.1.1
1.1 deraadt 1: /* $NetBSD: wwclreol.c,v 1.3 1995/09/28 10:35:15 tls 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. All advertising materials mentioning features or use of this software
19: * must display the following acknowledgement:
20: * This product includes software developed by the University of
21: * California, Berkeley and its contributors.
22: * 4. Neither the name of the University nor the names of its contributors
23: * may be used to endorse or promote products derived from this software
24: * without specific prior written permission.
25: *
26: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
27: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
28: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
29: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
30: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
31: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
32: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
33: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
34: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
35: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
36: * SUCH DAMAGE.
37: */
38:
39: #ifndef lint
40: #if 0
41: static char sccsid[] = "@(#)wwclreol.c 8.1 (Berkeley) 6/6/93";
42: #else
43: static char rcsid[] = "$NetBSD: wwclreol.c,v 1.3 1995/09/28 10:35:15 tls Exp $";
44: #endif
45: #endif /* not lint */
46:
47: #include "ww.h"
48: #include "tt.h"
49:
50: /*
51: * Clear w to the end of line.
52: * If cleared is true, then the screen line has already been cleared.
53: */
54: wwclreol1(w, row, col, cleared)
55: register struct ww *w;
56: int row, col;
57: char cleared;
58: {
59: register i;
60:
61: /*
62: * Clear the buffer right off
63: */
64: {
65: register union ww_char *buf;
66:
67: buf = &w->ww_buf[row][col];
68: for (i = w->ww_b.r - col; --i >= 0;)
69: buf++->c_w = ' ';
70: }
71:
72: /*
73: * If can't see it, just return.
74: */
75: if (row < w->ww_i.t || row >= w->ww_i.b
76: || w->ww_i.r <= 0 || w->ww_i.r <= col)
77: return;
78:
79: if (col < w->ww_i.l)
80: col = w->ww_i.l;
81:
82: /*
83: * Now fix wwns.
84: */
85: {
86: register union ww_char *s;
87: register char *smap, *win;
88:
89: i = col;
90: smap = &wwsmap[row][i];
91: s = &wwns[row][i];
92: win = &w->ww_win[row][i];
93: for (i = w->ww_i.r - i; --i >= 0;)
94: if (*smap++ == w->ww_index)
95: s++->c_w = ' ' | *win++ << WWC_MSHIFT;
96: else
97: s++, win++;
98: }
99: if (!cleared)
100: wwtouched[row] |= WWU_TOUCHED;
101: }