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/* $OpenBSD: fwide.c,v 1.5 2015/08/31 02:53:57 guenther Exp $ */ |
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/* $NetBSD: fwide.c,v 1.2 2003/01/18 11:29:54 thorpej Exp $ */ |
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/*- |
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* Copyright (c)2001 Citrus Project, |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* |
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* $Citrus$ |
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*/ |
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#include <stdio.h> |
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#include <wchar.h> |
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#include "local.h" |
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int |
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fwide(FILE *fp, int mode) |
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{ |
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struct wchar_io_data *wcio; |
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/* |
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* this implementation use only -1, 0, 1 |
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* for mode value. |
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* (we don't need to do this, but |
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* this can make things simpler.) |
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*/ |
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if (mode > 0) |
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mode = 1; |
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else if (mode < 0) |
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mode = -1; |
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FLOCKFILE(fp); |
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wcio = WCIO_GET(fp); |
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if (!wcio) |
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return 0; /* XXX */ |
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if (wcio->wcio_mode == 0 && mode != 0) |
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wcio->wcio_mode = mode; |
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else |
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mode = wcio->wcio_mode; |
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FUNLOCKFILE(fp); |
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return mode; |
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} |
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DEF_STRONG(fwide); |