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
42int
43mbcharlen(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