1 /* $NetBSD: fgetwc.c,v 1.4 2005/06/12 05:21:27 lukem Exp $ */
2 /* $DragonFly: src/lib/libc/stdio/fgetwc.c,v 1.1 2005/07/25 00:37:41 joerg Exp $ */
5 * Copyright (c)2001 Citrus Project,
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 #include "namespace.h"
37 #include "un-namespace.h"
39 #include "libc_private.h"
41 #include "priv_stdio.h"
44 __fgetwc_unlock(FILE *fp)
46 struct wchar_io_data *wcio;
51 _DIAGASSERT(fp != NULL);
53 _SET_ORIENTATION(fp, 1);
60 /* if there're ungetwc'ed wchars, use them */
61 if (wcio->wcio_ungetwc_inbuf) {
62 wc = wcio->wcio_ungetwc_buf[--wcio->wcio_ungetwc_inbuf];
67 st = &wcio->wcio_mbstate_in;
78 size = mbrtowc(&wc, &c, 1, st);
79 if (size == (size_t)-1) {
83 } while (size == (size_t)-2);
85 _DIAGASSERT(size == 1);
95 _DIAGASSERT(fp != NULL);
98 r = __fgetwc_unlock(fp);