1 /*
2 * Copyright (c) 1981, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34 #ifndef lint
35 static char sccsid[] = "@(#)insch.c 8.1 (Berkeley) 6/4/93";
36 #endif /* not lint */
37
38 #include <curses.h>
39 #include <string.h>
40
41 /*
42 * winsch --
43 * Do an insert-char on the line, leaving (cury, curx) unchanged.
44 */
45 int
winsch(win,ch)46 winsch(win, ch)
47 register WINDOW *win;
48 int ch;
49 {
50
51 register __LDATA *end, *temp1, *temp2;
52
53 end = &win->lines[win->cury]->line[win->curx];
54 temp1 = &win->lines[win->cury]->line[win->maxx - 1];
55 temp2 = temp1 - 1;
56 while (temp1 > end) {
57 (void)memcpy(temp1, temp2, sizeof(__LDATA));
58 temp1--, temp2--;
59 }
60 temp1->ch = ch;
61 temp1->attr &= ~__STANDOUT;
62 __touchline(win, win->cury, win->curx, win->maxx - 1, 0);
63 if (win->cury == LINES - 1 &&
64 (win->lines[LINES - 1]->line[COLS - 1].ch != ' ' ||
65 win->lines[LINES -1]->line[COLS - 1].attr != 0))
66 if (win->flags & __SCROLLOK) {
67 wrefresh(win);
68 scroll(win);
69 win->cury--;
70 } else
71 return (ERR);
72 return (OK);
73 }
74