1 /*- 2 * Copyright (c) 2002-2004 Tim J. Robbins. 3 * All rights reserved. 4 * 5 * Copyright (c) 2011 The FreeBSD Foundation 6 * All rights reserved. 7 * Portions of this software were developed by David Chisnall 8 * under sponsorship from the FreeBSD Foundation. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * $FreeBSD: head/lib/libc/locale/mbtowc.c 227753 2011-11-20 14:45:42Z theraven $ 32 */ 33 34 35 #include <errno.h> 36 #include <stdlib.h> 37 #include <wchar.h> 38 #include "mblocal.h" 39 40 int 41 mbtowc_l(wchar_t * __restrict pwc, const char * __restrict s, size_t n, locale_t locale) 42 { 43 static const mbstate_t initial; 44 size_t rval; 45 FIX_LOCALE(locale); 46 47 if (s == NULL) { 48 /* No support for state dependent encodings. */ 49 locale->mbtowc = initial; 50 return (0); 51 } 52 rval = XLOCALE_CTYPE(locale)->__mbrtowc(pwc, s, n, &locale->mbtowc); 53 switch (rval) { 54 case (size_t)-2: 55 errno = EILSEQ; 56 /* FALLTHROUGH */ 57 case (size_t)-1: 58 return (-1); 59 default: 60 return ((int)rval); 61 } 62 } 63 int 64 mbtowc(wchar_t * __restrict pwc, const char * __restrict s, size_t n) 65 { 66 return mbtowc_l(pwc, s, n, __get_locale()); 67 } 68