1 /****************************************************************************
2  * Copyright (c) 2002-2007,2009 Free Software Foundation, Inc.              *
3  *                                                                          *
4  * Permission is hereby granted, free of charge, to any person obtaining a  *
5  * copy of this software and associated documentation files (the            *
6  * "Software"), to deal in the Software without restriction, including      *
7  * without limitation the rights to use, copy, modify, merge, publish,      *
8  * distribute, distribute with modifications, sublicense, and/or sell       *
9  * copies of the Software, and to permit persons to whom the Software is    *
10  * furnished to do so, subject to the following conditions:                 *
11  *                                                                          *
12  * The above copyright notice and this permission notice shall be included  *
13  * in all copies or substantial portions of the Software.                   *
14  *                                                                          *
15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
16  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
17  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
18  * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
21  * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
22  *                                                                          *
23  * Except as contained in this notice, the name(s) of the above copyright   *
24  * holders shall not be used in advertising or otherwise to promote the     *
25  * sale, use or other dealings in this Software without prior written       *
26  * authorization.                                                           *
27  ****************************************************************************/
28 
29 /****************************************************************************
30  * Author: Thomas Dickey                                                    *
31  ****************************************************************************/
32 
33 /*
34 **	lib_in_wchnstr.c
35 **
36 **	The routine win_wchnstr().
37 **
38 */
39 
40 #include <curses.priv.h>
41 
42 MODULE_ID("$Id: lib_in_wchnstr.c,v 1.8 2009/10/24 22:37:48 tom Exp $")
43 
44 NCURSES_EXPORT(int)
45 win_wchnstr(WINDOW *win, cchar_t *wchstr, int n)
46 {
47     int code = OK;
48 
49     T((T_CALLED("win_wchnstr(%p,%p,%d)"), (void *) win, (void *) wchstr, n));
50     if (win != 0
51 	&& wchstr != 0) {
52 	NCURSES_CH_T *src;
53 	int row, col;
54 	int j, k, limit;
55 
56 	getyx(win, row, col);
57 	limit = getmaxx(win) - col;
58 	src = &(win->_line[row].text[col]);
59 
60 	if (n < 0) {
61 	    n = limit;
62 	} else if (n > limit) {
63 	    n = limit;
64 	}
65 	for (j = k = 0; j < n; ++j) {
66 	    if (j == 0 || !WidecExt(src[j]) || isWidecBase(src[j])) {
67 		wchstr[k++] = src[j];
68 	    }
69 	}
70 	memset(&(wchstr[k]), 0, sizeof(*wchstr));
71 	T(("result = %s", _nc_viscbuf(wchstr, n)));
72     } else {
73 	code = ERR;
74     }
75     returnCode(code);
76 }
77