2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
5 * This code is derived from software contributed to Berkeley by
6 * Edward Wang at The University of California, Berkeley.
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
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
38 static char sccsid[] = "@(#)wwadd.c 8.1 (Berkeley) 6/6/93";
40 "$FreeBSD: src/usr.bin/window/wwadd.c,v 1.1.1.1.14.1 2001/05/17 09:45:01 obrien Exp $";
49 register struct ww *w1;
53 register struct ww *w;
55 w1->ww_order = w2->ww_order + 1;
57 w1->ww_forw = w2->ww_forw;
58 w2->ww_forw->ww_back = w1;
61 for (w = w1->ww_forw; w != &wwhead; w = w->ww_forw)
63 for (i = w1->ww_i.t; i < w1->ww_i.b; i++) {
65 register char *smap = wwsmap[i];
66 register char *win = w1->ww_win[i];
67 union ww_char *ns = wwns[i];
68 union ww_char *buf = w1->ww_buf[i];
72 for (j = w1->ww_i.l; j < w1->ww_i.r; j++) {
74 if (w1->ww_order > w->ww_order)
78 if (w != &wwnobody && w->ww_win[i][j] == 0)
80 smap[j] = w1->ww_index;
83 ns[j].c_w = buf[j].c_w ^ win[j] << WWC_MSHIFT;
87 wwtouched[i] |= WWU_TOUCHED;
88 w1->ww_nvis[i] = nvis;