1 /****************************************************************************
2 * Copyright (c) 2002,2003 Free Software Foundation, Inc. *
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: *
12 * The above copyright notice and this permission notice shall be included *
13 * in all copies or substantial portions of the Software. *
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. *
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 *
27 ****************************************************************************/
29 /****************************************************************************
30 * Author: Thomas E. Dickey 2002 *
31 ****************************************************************************/
36 ** The routine unget_wch().
40 #include <curses.priv.h>
42 MODULE_ID("$Id: lib_unget_wch.c,v 1.5 2003/07/05 19:46:51 tom Exp $")
45 unget_wch(const wchar_t wch)
52 T((T_CALLED("unget_wch(%#lx)"), (unsigned long) wch));
54 memset(&state, 0, sizeof(state));
55 length = wcrtomb(0, wch, &state);
57 if (length != (size_t) (-1)
61 if ((string = (char *) malloc(length)) != 0) {
62 memset(&state, 0, sizeof(state));
63 wcrtomb(string, wch, &state);
65 for (n = (int) (length - 1); n >= 0; --n) {
66 if (ungetch(string[n]) != OK) {