Annotation of src/usr.bin/window/wwinsline.c, Revision 1.3
1.3 ! downsj 1: /* $OpenBSD$ */
1.1 deraadt 2: /* $NetBSD: wwinsline.c,v 1.3 1995/09/28 10:35:36 tls 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. All advertising materials mentioning features or use of this software
20: * must display the following acknowledgement:
21: * This product includes software developed by the University of
22: * California, Berkeley and its contributors.
23: * 4. Neither the name of the University nor the names of its contributors
24: * may be used to endorse or promote products derived from this software
25: * without specific prior written permission.
26: *
27: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
28: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
29: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
30: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
31: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
32: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
33: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
34: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
35: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
36: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
37: * SUCH DAMAGE.
38: */
39:
40: #ifndef lint
41: #if 0
42: static char sccsid[] = "@(#)wwinsline.c 8.1 (Berkeley) 6/6/93";
43: #else
1.3 ! downsj 44: static char rcsid[] = "$OpenBSD$";
1.1 deraadt 45: #endif
46: #endif /* not lint */
47:
48: #include "ww.h"
49:
50: wwinsline(w, row)
51: register struct ww *w;
52: int row;
53: {
54: register i;
55: register union ww_char **cpp, **cqq;
56: register union ww_char *cp;
57: int row1, row2;
58: char deleted;
59: int visible;
60:
61: /*
62: * Scroll first.
63: */
64: if ((row1 = row) < w->ww_i.t) {
65: row1 = w->ww_i.t;
66: visible = 0;
67: } else
68: visible = 1;
69: if ((row2 = w->ww_b.b) > w->ww_i.b) {
70: row2 = w->ww_i.b;
71: }
72: deleted = wwscroll1(w, row1, row2, -1, visible);
73:
74: /*
75: * Fix the buffer.
76: * But leave clearing the last line for wwclreol().
77: */
78: cpp = &w->ww_buf[w->ww_b.b];
79: cqq = cpp - 1;
80: cp = *cqq;
81: for (i = w->ww_b.b - row; --i > 0;)
82: *--cpp = *--cqq;
83: *cqq = cp;
84:
85: /*
86: * Now clear the last line.
87: */
88: if (visible)
89: wwclreol1(w, row, w->ww_b.l, deleted);
90: else {
91: cp += w->ww_b.l;
92: for (i = w->ww_b.nc; --i >= 0;)
93: cp++->c_w = ' ';
94: }
95: }