1 /****************************************************************************
2 * Copyright 2020 Thomas E. Dickey *
3 * Copyright 2002-2007,2009 Free Software Foundation, Inc. *
4 * *
5 * Permission is hereby granted, free of charge, to any person obtaining a *
6 * copy of this software and associated documentation files (the *
7 * "Software"), to deal in the Software without restriction, including *
8 * without limitation the rights to use, copy, modify, merge, publish, *
9 * distribute, distribute with modifications, sublicense, and/or sell *
10 * copies of the Software, and to permit persons to whom the Software is *
11 * furnished to do so, subject to the following conditions: *
12 * *
13 * The above copyright notice and this permission notice shall be included *
14 * in all copies or substantial portions of the Software. *
15 * *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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28 ****************************************************************************/
29
30 /****************************************************************************
31 * Author: Thomas Dickey *
32 ****************************************************************************/
33
34 /*
35 ** lib_in_wchnstr.c
36 **
37 ** The routine win_wchnstr().
38 **
39 */
40
41 #include <curses.priv.h>
42
43 MODULE_ID("$Id: lib_in_wchnstr.c,v 1.9 2020/02/02 23:34:34 tom Exp $")
44
NCURSES_EXPORT(int)45 NCURSES_EXPORT(int)
46 win_wchnstr(WINDOW *win, cchar_t *wchstr, int n)
47 {
48 int code = OK;
49
50 T((T_CALLED("win_wchnstr(%p,%p,%d)"), (void *) win, (void *) wchstr, n));
51 if (win != 0
52 && wchstr != 0) {
53 NCURSES_CH_T *src;
54 int row, col;
55 int j, k, limit;
56
57 getyx(win, row, col);
58 limit = getmaxx(win) - col;
59 src = &(win->_line[row].text[col]);
60
61 if (n < 0) {
62 n = limit;
63 } else if (n > limit) {
64 n = limit;
65 }
66 for (j = k = 0; j < n; ++j) {
67 if (j == 0 || !WidecExt(src[j]) || isWidecBase(src[j])) {
68 wchstr[k++] = src[j];
69 }
70 }
71 memset(&(wchstr[k]), 0, sizeof(*wchstr));
72 T(("result = %s", _nc_viscbuf(wchstr, n)));
73 } else {
74 code = ERR;
75 }
76 returnCode(code);
77 }
78