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 #pragma ident "%Z%%M% %I% %E% SMI"
32
33 /*LINTLIBRARY*/
34
35 #include <sys/types.h>
36 #include "curses_inc.h"
37
38 /*
39 * Push a process code back into the input stream
40 */
41
42 int
ungetwch(wchar_t code)43 ungetwch(wchar_t code)
44 {
45 int i, n;
46 char buf[CSMAX];
47
48 n = _curs_wctomb(buf, code & TRIM);
49 for (i = n - 1; i >= 0; --i)
50 if (ungetch((unsigned char)buf[i]) == ERR) {
51 /* remove inserted characters */
52 for (i = i + 1; i < n; ++i)
53 (void) tgetch(0);
54 return (ERR);
55 }
56
57 return (OK);
58 }
59