xref: /illumos-gate/usr/src/lib/libcurses/screen/wgetwch.c (revision 88f8b78a88cbdc6d8c1af5c3e54bc49d25095c98)
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  *	Get a process code
40  */
41 
42 int
43 wgetwch(WINDOW *win)
44 {
45 	int	c, n, type, width;
46 	char	buf[CSMAX];
47 	wchar_t	wchar;
48 
49 	/* get the first byte */
50 	if ((c = wgetch(win)) == ERR)
51 		return (ERR);
52 
53 	if (c >= KEY_MIN)
54 		return (c);
55 
56 	type = TYPE(c);
57 	width = cswidth[type] - ((type == 1 || type == 2) ? 0 : 1);
58 	/* LINTED */
59 	buf[0] = (char)c;
60 	for (n = 1; n <= width; ++n) {
61 		if ((c = wgetch(win)) == ERR)
62 			return (ERR);
63 		if (TYPE(c) != 0)
64 			return (ERR);
65 		/* LINTED */
66 		buf[n] = (char)c;
67 	}
68 
69 	/* translate it to process code */
70 	if ((_curs_mbtowc(&wchar, buf, n)) < 0)
71 		return (ERR);
72 	return ((int)wchar);
73 	}
74