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 /*
23  * Copyright (c) 1995-1998 by Sun Microsystems, Inc.
24  * All rights reserved.
25  */
26 
27 /* LINTLIBRARY */
28 
29 /*
30  * flushinp.c
31  *
32  * XCurses Library
33  *
34  * Copyright 1990, 1995 by Mortice Kern Systems Inc.  All rights reserved.
35  *
36  */
37 
38 #ifdef M_RCSID
39 #ifndef lint
40 static char rcsID[] =
41 "$Header: /team/ps/sun_xcurses/archive/local_changes/xcurses/src/lib/"
42 "libxcurses/src/libc/xcurses/rcs/flushinp.c 1.2 1998/04/24 17:17:33 "
43 "cbates Exp $";
44 #endif
45 #endif
46 
47 #include <private.h>
48 
49 /*
50  * Throw away any typeahead that has been typed by the user
51  * and has not yet been read by the program.
52  */
53 int
flushinp(void)54 flushinp(void)
55 {
56 	int fd;
57 
58 	if (!iqIsEmpty())
59 		iqReset();
60 
61 	if (cur_term->_flags & __TERM_ISATTY_IN)
62 		fd = cur_term->_ifd;
63 	else if (cur_term->_flags & __TERM_ISATTY_OUT)
64 		fd = cur_term->_ofd;
65 	else
66 		fd = -1;
67 
68 	if (0 <= fd)
69 		(void) tcflush(fd, TCIFLUSH);
70 
71 	return (OK);
72 }
73