1 /* $OpenBSD: lib_insdel.c,v 1.4 2023/10/17 09:52:08 nicm Exp $ */
2
3 /****************************************************************************
4 * Copyright 2020 Thomas E. Dickey *
5 * Copyright 1998-2003,2009 Free Software Foundation, Inc. *
6 * *
7 * Permission is hereby granted, free of charge, to any person obtaining a *
8 * copy of this software and associated documentation files (the *
9 * "Software"), to deal in the Software without restriction, including *
10 * without limitation the rights to use, copy, modify, merge, publish, *
11 * distribute, distribute with modifications, sublicense, and/or sell *
12 * copies of the Software, and to permit persons to whom the Software is *
13 * furnished to do so, subject to the following conditions: *
14 * *
15 * The above copyright notice and this permission notice shall be included *
16 * in all copies or substantial portions of the Software. *
17 * *
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
21 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
24 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
25 * *
26 * Except as contained in this notice, the name(s) of the above copyright *
27 * holders shall not be used in advertising or otherwise to promote the *
28 * sale, use or other dealings in this Software without prior written *
29 * authorization. *
30 ****************************************************************************/
31
32 /****************************************************************************
33 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
34 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
35 ****************************************************************************/
36
37 /*
38 ** lib_insdel.c
39 **
40 ** The routine winsdelln(win, n).
41 ** positive n insert n lines above current line
42 ** negative n delete n lines starting from current line
43 **
44 */
45
46 #include <curses.priv.h>
47
48 MODULE_ID("$Id: lib_insdel.c,v 1.4 2023/10/17 09:52:08 nicm Exp $")
49
NCURSES_EXPORT(int)50 NCURSES_EXPORT(int)
51 winsdelln(WINDOW *win, int n)
52 {
53 int code = ERR;
54
55 T((T_CALLED("winsdelln(%p,%d)"), (void *) win, n));
56
57 if (win) {
58 if (n != 0) {
59 _nc_scroll_window(win, -n, win->_cury, win->_maxy,
60 win->_nc_bkgd);
61 _nc_synchook(win);
62 }
63 code = OK;
64 }
65 returnCode(code);
66 }
67