xref: /titanic_52/usr/src/lib/libxcurses/src/libc/xcurses/flushinp.c (revision 263f549e5da8b32c4922f586afb365b8ae388a6c)
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, by Sun Microsystems, Inc.
24  * All rights reserved.
25  */
26 
27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
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[] = "$Header: /rd/src/libc/xcurses/rcs/flushinp.c 1.1 1995/06/06 14:13:41 ant Exp $";
41 #endif
42 #endif
43 
44 #include <private.h>
45 
46 /*f
47  * Throw away any typeahead that has been typed by the user
48  * and has not yet been read by the program.
49  */
50 int
51 flushinp()
52 {
53 	int fd;
54 
55 #ifdef M_CURSES_TRACE
56 	__m_trace("flushinp(void)");
57 #endif
58 
59 	if (!ISEMPTY())
60 		RESET();
61 
62         if (cur_term->_flags & __TERM_ISATTY_IN)
63                 fd = cur_term->_ifd;
64         else if (cur_term->_flags & __TERM_ISATTY_OUT)
65                 fd = cur_term->_ofd;
66 	else
67 		fd = -1;
68 
69 	if (0 <= fd)
70 		(void) tcflush(fd, TCIFLUSH);
71 
72 	return __m_return_code("flushinp", OK);
73 }
74