1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22 /* Copyright (c) 1988 AT&T */
23 /* All Rights Reserved */
24
25
26 /*
27 * Copyright (c) 1997, by Sun Microsystems, Inc.
28 * All rights reserved.
29 */
30
31 /*LINTLIBRARY*/
32
33 #include <sys/types.h>
34 #include "curses_inc.h"
35
36 /*
37 * Push a process code back into the input stream
38 */
39
40 int
ungetwch(wchar_t code)41 ungetwch(wchar_t code)
42 {
43 int i, n;
44 char buf[CSMAX];
45
46 n = _curs_wctomb(buf, code & TRIM);
47 for (i = n - 1; i >= 0; --i)
48 if (ungetch((unsigned char)buf[i]) == ERR) {
49 /* remove inserted characters */
50 for (i = i + 1; i < n; ++i)
51 (void) tgetch(0);
52 return (ERR);
53 }
54
55 return (OK);
56 }
57