xref: /illumos-gate/usr/src/lib/libcurses/screen/wgetwch.c (revision ddb365bfc9e868ad24ccdcb0dc91af18b10df082)
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  *	Get a process code
38  */
39 
40 int
41 wgetwch(WINDOW *win)
42 {
43 	int	c, n, type, width;
44 	char	buf[CSMAX];
45 	wchar_t	wchar;
46 
47 	/* get the first byte */
48 	if ((c = wgetch(win)) == ERR)
49 		return (ERR);
50 
51 	if (c >= KEY_MIN)
52 		return (c);
53 
54 	type = TYPE(c);
55 	width = cswidth[type] - ((type == 1 || type == 2) ? 0 : 1);
56 	/* LINTED */
57 	buf[0] = (char)c;
58 	for (n = 1; n <= width; ++n) {
59 		if ((c = wgetch(win)) == ERR)
60 			return (ERR);
61 		if (TYPE(c) != 0)
62 			return (ERR);
63 		/* LINTED */
64 		buf[n] = (char)c;
65 	}
66 
67 	/* translate it to process code */
68 	if ((_curs_mbtowc(&wchar, buf, n)) < 0)
69 		return (ERR);
70 	return ((int)wchar);
71 	}
72