1 /* $NetBSD: wwinschar.c,v 1.7 2003/08/07 11:17:40 agc Exp $ */
4 * Copyright (c) 1983, 1993
5 * The Regents of the University of California. All rights reserved.
7 * This code is derived from software contributed to Berkeley by
8 * Edward Wang at The University of California, Berkeley.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 #include <sys/cdefs.h>
38 static char sccsid[] = "@(#)wwinschar.c 8.1 (Berkeley) 6/6/93";
40 __RCSID("$NetBSD: wwinschar.c,v 1.7 2003/08/07 11:17:40 agc Exp $");
49 wwinschar(struct ww *w, int row, int col, char c, char m)
53 short x = c | m << WWC_MSHIFT;
56 * First, shift the line.
61 p = &w->ww_buf[row][w->ww_b.r];
63 for (i = w->ww_b.r - col; --i > 0;)
69 * If can't see it, just return.
71 if (row < w->ww_i.t || row >= w->ww_i.b
72 || w->ww_i.r <= 0 || w->ww_i.r <= col)
79 * Now find out how much is actually changed, and fix wwns.
89 smap = &wwsmap[row][col];
90 for (i = col; i < w->ww_i.r && *smap++ != w->ww_index; i++)
98 smap = &wwsmap[row][i];
99 touched = wwtouched[row];
100 for (; i < w->ww_i.r; i++) {
101 if (*smap++ != w->ww_index)
103 touched |= WWU_TOUCHED;
106 buf[i].c_w ^ win[i] << WWC_MSHIFT;
112 wwtouched[row] = touched;
116 * Can/Should we use delete character?
118 if ((tt.tt_inschar || tt.tt_insspace) && nvis > (wwncol - col) / 2) {
119 union ww_char *p, *q;
122 xxinschar(row, col, c, m);
124 xxinsspace(row, col);
127 p = &wwos[row][wwncol];
129 for (i = wwncol - col; --i > 0;)