2 * Copyright (c) 2002-2004 Tim J. Robbins.
5 * Copyright (c) 2011 The FreeBSD Foundation
7 * Portions of this software were developed by David Chisnall
8 * under sponsorship from the FreeBSD Foundation.
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
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.
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
32 #include <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
35 #include "namespace.h"
40 #include "un-namespace.h"
41 #include "libc_private.h"
44 #include "xlocale_private.h"
50 fgetwc_l(FILE *fp, locale_t locale)
57 r = __fgetwc(fp, locale);
65 return fgetwc_l(fp, __get_locale());
69 * Non-MT-safe version.
72 __fgetwc(FILE *fp, locale_t locale)
76 struct xlocale_ctype *l = XLOCALE_CTYPE(locale);
78 if (fp->_r <= 0 && __srefill(fp))
80 if (MB_CUR_MAX == 1) {
81 /* Fast path for single-byte encodings. */
87 nconv = l->__mbrtowc(&wc, fp->_p, fp->_r, &fp->_mbstate);
88 if (nconv == (size_t)-1)
90 else if (nconv == (size_t)-2)
92 else if (nconv == 0) {
94 * Assume that the only valid representation of
95 * the null wide character is a single null byte.
105 } while (__srefill(fp) == 0);
106 fp->_flags |= __SERR;