| 1 | /* $NetBSD: wcio.h,v 1.3 2003/01/18 11:30:00 thorpej Exp $ */
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| 2 |
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| 3 | /*-
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| 4 | * Copyright (c)2001 Citrus Project,
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| 5 | * All rights reserved.
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| 6 | *
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| 7 | * Redistribution and use in source and binary forms, with or without
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| 8 | * modification, are permitted provided that the following conditions
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| 9 | * are met:
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| 10 | * 1. Redistributions of source code must retain the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer.
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| 12 | * 2. Redistributions in binary form must reproduce the above copyright
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| 13 | * notice, this list of conditions and the following disclaimer in the
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| 14 | * documentation and/or other materials provided with the distribution.
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| 15 | *
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| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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| 17 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 18 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 19 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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| 20 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 21 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 22 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 23 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 24 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 25 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 26 | * SUCH DAMAGE.
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| 27 | *
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| 28 | * $Citrus$
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| 29 | */
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| 30 |
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| 31 | #ifndef _WCIO_H_
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| 32 | #define _WCIO_H_
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| 33 |
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| 34 | #include <wchar.h> /* for mbstate_t and wchar_t */
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| 35 |
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| 36 | /* minimal requirement of SUSv2 */
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| 37 | #define WCIO_UNGETWC_BUFSIZE 1
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| 38 |
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| 39 | #define WCIO_GET(fp) (&(_EXT(fp)->_wcio))
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| 40 |
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| 41 | struct wchar_io_data {
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| 42 | mbstate_t wcio_mbstate_in;
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| 43 | mbstate_t wcio_mbstate_out;
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| 44 |
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| 45 | wchar_t wcio_ungetwc_buf[WCIO_UNGETWC_BUFSIZE];
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| 46 | size_t wcio_ungetwc_inbuf;
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| 47 |
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| 48 | int wcio_mode; /* orientation */
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| 49 | };
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| 50 |
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| 51 | #define _SET_ORIENTATION(fp, mode) \
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| 52 | do {\
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| 53 | struct wchar_io_data *_wcio = WCIO_GET(fp);\
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| 54 | if (_wcio && _wcio->wcio_mode == 0)\
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| 55 | _wcio->wcio_mode = (mode);\
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| 56 | } while (/*CONSTCOND*/0)
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| 57 |
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| 58 | /*
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| 59 | * WCIO_FREE should be called by fclose
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| 60 | */
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| 61 | #define WCIO_FREE(fp) \
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| 62 | do {\
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| 63 | _EXT(fp)->_wcio.wcio_mode = 0;\
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| 64 | WCIO_FREEUB(fp);\
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| 65 | } while (/*CONSTCOND*/0)
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| 66 |
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| 67 | #define WCIO_FREEUB(fp) \
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| 68 | do {\
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| 69 | _EXT(fp)->_wcio.wcio_ungetwc_inbuf = 0;\
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| 70 | } while (/*CONSTCOND*/0)
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| 71 |
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| 72 | #endif /*_WCIO_H_*/
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