/*
 * This file is part of the UCB release of Plan 9. It is subject to the license
 * terms in the LICENSE file found in the top-level directory of this
 * distribution and at http://akaros.cs.berkeley.edu/files/Plan9License. No
 * part of the UCB release of Plan 9, including this file, may be copied,
 * modified, propagated, or distributed except according to the terms contained
 * in the LICENSE file.
 */

#include <u.h>
#include <libc.h>

int
jehanne_utflen(const char *s)
{
	int c;
	int32_t n;
	Rune rune;

	n = 0;
	for(;;) {
		c = *(uint8_t*)s;
		if(c < Runeself) {
			if(c == 0)
				return n;
			s++;
		} else
			s += jehanne_chartorune(&rune, s);
		n++;
	}
}