BSD 4_4_Lite1 release
[unix-history] / usr / src / contrib / nvi.1.14 / PORT / curses / insertln.c
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1/*
2 * Copyright (c) 1981, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
c0567266
KB
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.
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32 */
33
34#ifndef lint
35static char sccsid[] = "@(#)insertln.c 8.1 (Berkeley) 6/4/93";
36#endif /* not lint */
37
38#include <curses.h>
39#include <string.h>
40
41/*
42 * winsertln --
43 * Do an insert-line on the window, leaving (cury, curx) unchanged.
44 */
45int
46winsertln(win)
47 register WINDOW *win;
48{
49
50 register int y, i;
51 register __LINE *temp;
52
53#ifdef DEBUG
54 __CTRACE("insertln: (%0.2o)\n", win);
55#endif
56 if (win->orig == NULL)
57 temp = win->lines[win->maxy - 1];
58 for (y = win->maxy - 1; y > win->cury; --y) {
59 win->lines[y]->flags &= ~__ISPASTEOL;
60 win->lines[y - 1]->flags &= ~__ISPASTEOL;
61 if (win->orig == NULL)
62 win->lines[y] = win->lines[y - 1];
63 else
64 (void)memcpy(win->lines[y]->line,
65 win->lines[y - 1]->line,
66 win->maxx * __LDATASIZE);
67 __touchline(win, y, 0, win->maxx - 1, 0);
68 }
69 if (win->orig == NULL)
70 win->lines[y] = temp;
71 else
72 temp = win->lines[y];
73 for(i = 0; i < win->maxx; i++) {
74 temp->line[i].ch = ' ';
75 temp->line[i].attr = 0;
76 }
77 __touchline(win, y, 0, win->maxx - 1, 0);
78 if (win->orig == NULL)
79 __id_subwins(win);
80 return (OK);
81}