71 lines
2.2 KiB
C
71 lines
2.2 KiB
C
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/* $NetBSD: wcio.h,v 1.3 2003/01/18 11:30:00 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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#ifndef _WCIO_H_
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#define _WCIO_H_
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#include <wchar.h> /* for mbstate_t and wchar_t */
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/* minimal requirement of SUSv2 */
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#define WCIO_UNGETWC_BUFSIZE 1
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struct wchar_io_data {
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mbstate_t wcio_mbstate_in;
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mbstate_t wcio_mbstate_out;
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wchar_t wcio_ungetwc_buf[WCIO_UNGETWC_BUFSIZE];
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size_t wcio_ungetwc_inbuf;
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int wcio_mode; /* orientation */
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};
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#define _SET_ORIENTATION(fp, mode) \
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do {\
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struct wchar_io_data *_wcio = WCIO_GET(fp);\
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if (_wcio && _wcio->wcio_mode == 0)\
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_wcio->wcio_mode = (mode);\
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} while (/*CONSTCOND*/0)
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/*
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* WCIO_FREE should be called by fclose
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*/
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#define WCIO_GET(fp) (&(_EXT(fp)->_wcio))
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#define WCIO_FREE(fp) \
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do {\
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_EXT(fp)->_wcio.wcio_mode = 0;\
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WCIO_FREEUB(fp);\
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} while (/*CONSTCOND*/0)
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#define WCIO_FREEUB(fp) \
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do {\
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_EXT(fp)->_wcio.wcio_ungetwc_inbuf = 0;\
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} while (/*CONSTCOND*/0)
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#endif /*_WCIO_H_*/
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