1/*- 2 * Copyright (c) 2002-2004 Tim J. Robbins. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <sys/cdefs.h> 28__FBSDID("$FreeBSD: src/lib/libc/locale/mblen.c,v 1.9 2004/07/29 06:18:40 tjr Exp $"); 29 30#include "xlocale_private.h" 31 32#include <stdlib.h> 33#include <wchar.h> 34#include "mblocal.h" 35 36int 37mblen_l(const char *s, size_t n, locale_t loc) 38{ 39 static const mbstate_t initial; 40 size_t rval; 41 42 NORMALIZE_LOCALE(loc); 43 if (s == NULL) { 44 /* No support for state dependent encodings. */ 45 loc->__mbs_mblen = initial; 46 return (0); 47 } 48 rval = loc->__lc_ctype->__mbrtowc(NULL, s, n, &loc->__mbs_mblen, loc); 49 if (rval == (size_t)-1 || rval == (size_t)-2) 50 return (-1); 51 return ((int)rval); 52} 53 54int 55mblen(const char *s, size_t n) 56{ 57 return mblen_l(s, n, __current_locale()); 58} 59