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 the # of valid characters
40 */
41
42 int
mbcharlen(char * sp)43 mbcharlen(char *sp)
44 {
45 int n, m, k, ty;
46 chtype c;
47
48 n = 0;
49 for (; *sp != '\0'; ++sp, ++n)
50 if (ISMBIT(*sp)) {
51 c = RBYTE(*sp);
52 ty = TYPE(c & 0377);
53 m = cswidth[ty] - (ty == 0 ? 1 : 0);
54 for (sp += 1, k = 1; *sp != '\0' && k <= m; ++k,
55 ++sp) {
56 c = RBYTE(*sp);
57 if (TYPE(c) != 0)
58 break;
59 }
60 if (k <= m)
61 break;
62 }
63 return (n);
64 }
65