b6cbf7203b
This patch imports the unmodified current version of NetBSD libc. The NetBSD includes are in /nbsd_include, while the libc code itself is split between lib/nbsd_libc and common/lib/libc.
102 lines
2.6 KiB
C
102 lines
2.6 KiB
C
/* $NetBSD: fgetwc.c,v 1.11 2009/10/25 20:44:13 christos Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c)2001 Citrus Project,
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $Citrus$
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
__RCSID("$NetBSD: fgetwc.c,v 1.11 2009/10/25 20:44:13 christos Exp $");
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
#include <assert.h>
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <wchar.h>
|
|
#include "reentrant.h"
|
|
#include "local.h"
|
|
|
|
wint_t
|
|
__fgetwc_unlock(FILE *fp)
|
|
{
|
|
struct wchar_io_data *wcio;
|
|
wchar_t wc;
|
|
size_t nr;
|
|
|
|
_DIAGASSERT(fp != NULL);
|
|
|
|
_SET_ORIENTATION(fp, 1);
|
|
wcio = WCIO_GET(fp);
|
|
_DIAGASSERT(wcio != NULL);
|
|
|
|
/* if there're ungetwc'ed wchars, use them */
|
|
if (wcio->wcio_ungetwc_inbuf)
|
|
return wcio->wcio_ungetwc_buf[--wcio->wcio_ungetwc_inbuf];
|
|
|
|
if (fp->_r <= 0) {
|
|
restart:
|
|
if (__srefill(fp) != 0)
|
|
return WEOF;
|
|
}
|
|
nr = mbrtowc(&wc, (const char *)fp->_p,
|
|
(size_t)fp->_r, &wcio->wcio_mbstate_in);
|
|
if (nr == (size_t)-1) {
|
|
fp->_flags |= __SERR;
|
|
return WEOF;
|
|
} else if (nr == (size_t)-2) {
|
|
fp->_p += fp->_r;
|
|
fp->_r = 0;
|
|
goto restart;
|
|
}
|
|
if (wc == L'\0') {
|
|
while (*fp->_p != '\0') {
|
|
++fp->_p;
|
|
--fp->_r;
|
|
}
|
|
nr = 1;
|
|
}
|
|
fp->_p += nr;
|
|
fp->_r -= nr;
|
|
|
|
return wc;
|
|
}
|
|
|
|
wint_t
|
|
fgetwc(FILE *fp)
|
|
{
|
|
wint_t r;
|
|
|
|
_DIAGASSERT(fp != NULL);
|
|
|
|
FLOCKFILE(fp);
|
|
r = __fgetwc_unlock(fp);
|
|
FUNLOCKFILE(fp);
|
|
|
|
return (r);
|
|
}
|
|
|