1 /* $OpenBSD: lib_in_wchnstr.c,v 1.2 2023/10/17 09:52:09 nicm Exp $ */
2
3 /****************************************************************************
4 * Copyright 2020 Thomas E. Dickey *
5 * Copyright 2002-2007,2009 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: Thomas Dickey *
34 ****************************************************************************/
35
36 /*
37 ** lib_in_wchnstr.c
38 **
39 ** The routine win_wchnstr().
40 **
41 */
42
43 #include <curses.priv.h>
44
45 MODULE_ID("$Id: lib_in_wchnstr.c,v 1.2 2023/10/17 09:52:09 nicm Exp $")
46
NCURSES_EXPORT(int)47 NCURSES_EXPORT(int)
48 win_wchnstr(WINDOW *win, cchar_t *wchstr, int n)
49 {
50 int code = OK;
51
52 T((T_CALLED("win_wchnstr(%p,%p,%d)"), (void *) win, (void *) wchstr, n));
53 if (win != 0
54 && wchstr != 0) {
55 NCURSES_CH_T *src;
56 int row, col;
57 int j, k, limit;
58
59 getyx(win, row, col);
60 limit = getmaxx(win) - col;
61 src = &(win->_line[row].text[col]);
62
63 if (n < 0) {
64 n = limit;
65 } else if (n > limit) {
66 n = limit;
67 }
68 for (j = k = 0; j < n; ++j) {
69 if (j == 0 || !WidecExt(src[j]) || isWidecBase(src[j])) {
70 wchstr[k++] = src[j];
71 }
72 }
73 memset(&(wchstr[k]), 0, sizeof(*wchstr));
74 T(("result = %s", _nc_viscbuf(wchstr, n)));
75 } else {
76 code = ERR;
77 }
78 returnCode(code);
79 }
80