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wcio.h revision 1.2.2.2
      1  1.2.2.2  nathanw /* $NetBSD: wcio.h,v 1.2.2.2 2002/01/28 20:51:16 nathanw Exp $ */
      2  1.2.2.2  nathanw 
      3  1.2.2.2  nathanw /*-
      4  1.2.2.2  nathanw  * Copyright (c)2001 Citrus Project,
      5  1.2.2.2  nathanw  * All rights reserved.
      6  1.2.2.2  nathanw  *
      7  1.2.2.2  nathanw  * Redistribution and use in source and binary forms, with or without
      8  1.2.2.2  nathanw  * modification, are permitted provided that the following conditions
      9  1.2.2.2  nathanw  * are met:
     10  1.2.2.2  nathanw  * 1. Redistributions of source code must retain the above copyright
     11  1.2.2.2  nathanw  *    notice, this list of conditions and the following disclaimer.
     12  1.2.2.2  nathanw  * 2. Redistributions in binary form must reproduce the above copyright
     13  1.2.2.2  nathanw  *    notice, this list of conditions and the following disclaimer in the
     14  1.2.2.2  nathanw  *    documentation and/or other materials provided with the distribution.
     15  1.2.2.2  nathanw  *
     16  1.2.2.2  nathanw  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     17  1.2.2.2  nathanw  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  1.2.2.2  nathanw  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  1.2.2.2  nathanw  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     20  1.2.2.2  nathanw  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  1.2.2.2  nathanw  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  1.2.2.2  nathanw  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  1.2.2.2  nathanw  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  1.2.2.2  nathanw  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  1.2.2.2  nathanw  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  1.2.2.2  nathanw  * SUCH DAMAGE.
     27  1.2.2.2  nathanw  *
     28  1.2.2.2  nathanw  * $Citrus$
     29  1.2.2.2  nathanw  */
     30  1.2.2.2  nathanw 
     31  1.2.2.2  nathanw #ifndef _WCIO_H_
     32  1.2.2.2  nathanw #define _WCIO_H_
     33  1.2.2.2  nathanw 
     34  1.2.2.2  nathanw #include <wchar.h> /* for mbstate_t and wchar_t */
     35  1.2.2.2  nathanw 
     36  1.2.2.2  nathanw /* minimal requirement of SUSv2 */
     37  1.2.2.2  nathanw #define WCIO_UNGETWC_BUFSIZE 1
     38  1.2.2.2  nathanw 
     39  1.2.2.2  nathanw struct wchar_io_data {
     40  1.2.2.2  nathanw 	mbstate_t wcio_mbstate_in;
     41  1.2.2.2  nathanw 	mbstate_t wcio_mbstate_out;
     42  1.2.2.2  nathanw 
     43  1.2.2.2  nathanw 	wchar_t wcio_ungetwc_buf[WCIO_UNGETWC_BUFSIZE];
     44  1.2.2.2  nathanw 	size_t wcio_ungetwc_inbuf;
     45  1.2.2.2  nathanw 
     46  1.2.2.2  nathanw 	int wcio_mode; /* orientation */
     47  1.2.2.2  nathanw };
     48  1.2.2.2  nathanw 
     49  1.2.2.2  nathanw #define _SET_ORIENTATION(fp, mode) \
     50  1.2.2.2  nathanw do {\
     51  1.2.2.2  nathanw 	struct wchar_io_data *_wcio = WCIO_GET(fp);\
     52  1.2.2.2  nathanw 	if (_wcio && _wcio->wcio_mode == 0)\
     53  1.2.2.2  nathanw 		_wcio->wcio_mode = (mode);\
     54  1.2.2.2  nathanw } while (/*CONSTCOND*/0)
     55  1.2.2.2  nathanw 
     56  1.2.2.2  nathanw /*
     57  1.2.2.2  nathanw  * WCIO_FREE should be called by fclose
     58  1.2.2.2  nathanw  */
     59  1.2.2.2  nathanw #define WCIO_GET(fp) (&(_EXT(fp)->_wcio))
     60  1.2.2.2  nathanw #define WCIO_FREE(fp) \
     61  1.2.2.2  nathanw do {\
     62  1.2.2.2  nathanw 	_EXT(fp)->_wcio.wcio_mode = 0;\
     63  1.2.2.2  nathanw 	WCIO_FREEUB(fp);\
     64  1.2.2.2  nathanw } while (/*CONSTCOND*/0)
     65  1.2.2.2  nathanw #define WCIO_FREEUB(fp) \
     66  1.2.2.2  nathanw do {\
     67  1.2.2.2  nathanw 	_EXT(fp)->_wcio.wcio_ungetwc_inbuf = 0;\
     68  1.2.2.2  nathanw } while (/*CONSTCOND*/0)
     69  1.2.2.2  nathanw 
     70  1.2.2.2  nathanw #endif /*_WCIO_H_*/
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