386BSD 0.1 development
[unix-history] / usr / src / lib / libcurses / insertln.c
CommitLineData
7c671adf
WJ
1/*
2 * Copyright (c) 1981 Regents of the University of California.
3 * 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
35static char sccsid[] = "@(#)insertln.c 5.4 (Berkeley) 6/1/90";
36#endif /* not lint */
37
38# include "curses.ext"
39
40/*
41 * This routine performs an insert-line on the window, leaving
42 * (_cury,_curx) unchanged.
43 *
44 */
45winsertln(win)
46reg WINDOW *win; {
47
48 reg char *temp;
49 reg int y;
50 reg char *end;
51 reg int x;
52
53#ifdef DEBUG
54 fprintf(outf, "INSERTLN(%0.2o)\n", win);
55#endif
56 if (win->_orig == NULL)
57 temp = win->_y[win->_maxy - 1];
58 for (y = win->_maxy - 1; y > win->_cury; --y) {
59 if (win->_orig == NULL)
60 win->_y[y] = win->_y[y - 1];
61 else
62 bcopy(win->_y[y - 1], win->_y[y], win->_maxx);
63 touchline(win, y, 0, win->_maxx - 1);
64 }
65 if (win->_orig == NULL)
66 win->_y[y] = temp;
67 else
68 temp = win->_y[y];
69 for (end = &temp[win->_maxx]; temp < end; )
70 *temp++ = ' ';
71 touchline(win, y, 0, win->_maxx - 1);
72 if (win->_orig == NULL)
73 _id_subwins(win);
74}