68 lines
2.0 KiB
C
68 lines
2.0 KiB
C
/* $NetBSD: fwide.c,v 1.1 2001/12/07 11:47:42 yamt 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 <assert.h>
|
|
#include <stdio.h>
|
|
#include <wchar.h>
|
|
#include "local.h"
|
|
#include "reentrant.h"
|
|
|
|
int
|
|
fwide(FILE *fp, int mode)
|
|
{
|
|
struct wchar_io_data *wcio;
|
|
|
|
_DIAGASSERT(fp != NULL);
|
|
|
|
/*
|
|
* this implementation use only -1, 0, 1
|
|
* for mode value.
|
|
* (we don't need to do this, but
|
|
* this can make things simpler.)
|
|
*/
|
|
if (mode > 0)
|
|
mode = 1;
|
|
else if (mode < 0)
|
|
mode = -1;
|
|
|
|
FLOCKFILE(fp);
|
|
wcio = WCIO_GET(fp);
|
|
if (!wcio)
|
|
return 0; /* XXX */
|
|
|
|
if (wcio->wcio_mode == 0 && mode != 0)
|
|
wcio->wcio_mode = mode;
|
|
else
|
|
mode = wcio->wcio_mode;
|
|
FUNLOCKFILE(fp);
|
|
|
|
return mode;
|
|
}
|