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