[lttng-ust.git] / snprintf / wcio.h

/*	$OpenBSD: wcio.h,v 1.1 2005/06/17 20:40:32 espie Exp $	*/
/* $NetBSD: wcio.h,v 1.3 2003/01/18 11:30:00 thorpej 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.
 *
 * $Citrus$
 */

#ifndef _WCIO_H_
#define _WCIO_H_

/* minimal requirement of SUSv2 */
#define WCIO_UNGETWC_BUFSIZE 1

struct wchar_io_data {
	mbstate_t wcio_mbstate_in;
	mbstate_t wcio_mbstate_out;

	wchar_t wcio_ungetwc_buf[WCIO_UNGETWC_BUFSIZE];
	size_t wcio_ungetwc_inbuf;

	int wcio_mode; /* orientation */
};

#define WCIO_GET(fp) \
	(_EXT(fp) ? &(_EXT(fp)->_wcio) : (struct wchar_io_data *)0)

#define WCIO_GET_NONULL(fp) \
	(&(_EXT(fp)->_wcio))

#define _SET_ORIENTATION(fp, mode) \
do {\
	struct wchar_io_data *_wcio = WCIO_GET(fp); \
	if (_wcio && _wcio->wcio_mode == 0) \
		_wcio->wcio_mode = (mode);\
} while (0)

/*
 * WCIO_FREE should be called by fclose
 */
#define WCIO_FREE(fp) \
do {\
	struct wchar_io_data *_wcio = WCIO_GET(fp); \
	if (_wcio) { \
		_wcio->wcio_mode = 0;\
		_wcio->wcio_ungetwc_inbuf = 0;\
	} \
} while (0)

#define WCIO_FREEUB(fp) \
do {\
	struct wchar_io_data *_wcio = WCIO_GET(fp); \
	if (_wcio) { \
		_wcio->wcio_ungetwc_inbuf = 0;\
	} \
} while (0)

#define WCIO_INIT(fp) \
	memset(WCIO_GET_NONULL(fp), 0, sizeof(struct wchar_io_data))

#endif /*_WCIO_H_*/
Commit	Line	Data
	1	/* $OpenBSD: wcio.h,v 1.1 2005/06/17 20:40:32 espie Exp $ */
	2	/* $NetBSD: wcio.h,v 1.3 2003/01/18 11:30:00 thorpej Exp $ */
	3
	4	/*-
	5	* Copyright (c)2001 Citrus Project,
	6	* All rights reserved.
	7	*
	8	* Redistribution and use in source and binary forms, with or without
	9	* modification, are permitted provided that the following conditions
	10	* are met:
	11	* 1. Redistributions of source code must retain the above copyright
	12	* notice, this list of conditions and the following disclaimer.
	13	* 2. Redistributions in binary form must reproduce the above copyright
	14	* notice, this list of conditions and the following disclaimer in the
	15	* documentation and/or other materials provided with the distribution.
	16	*
	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
	18	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	19	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	20	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
	21	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	22	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	23	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	24	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	25	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	26	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	27	* SUCH DAMAGE.
	28	*
	29	* $Citrus$
	30	*/
	31
	32	#ifndef _WCIO_H_
	33	#define _WCIO_H_
	34
	35	/* minimal requirement of SUSv2 */
	36	#define WCIO_UNGETWC_BUFSIZE 1
	37
	38	struct wchar_io_data {
	39	mbstate_t wcio_mbstate_in;
	40	mbstate_t wcio_mbstate_out;
	41
	42	wchar_t wcio_ungetwc_buf[WCIO_UNGETWC_BUFSIZE];
	43	size_t wcio_ungetwc_inbuf;
	44
	45	int wcio_mode; /* orientation */
	46	};
	47
	48	#define WCIO_GET(fp) \
	49	(_EXT(fp) ? &(_EXT(fp)->_wcio) : (struct wchar_io_data *)0)
	50
	51	#define WCIO_GET_NONULL(fp) \
	52	(&(_EXT(fp)->_wcio))
	53
	54	#define _SET_ORIENTATION(fp, mode) \
	55	do {\
	56	struct wchar_io_data *_wcio = WCIO_GET(fp); \
	57	if (_wcio && _wcio->wcio_mode == 0) \
	58	_wcio->wcio_mode = (mode);\
	59	} while (0)
	60
	61	/*
	62	* WCIO_FREE should be called by fclose
	63	*/
	64	#define WCIO_FREE(fp) \
	65	do {\
	66	struct wchar_io_data *_wcio = WCIO_GET(fp); \
	67	if (_wcio) { \
	68	_wcio->wcio_mode = 0;\
	69	_wcio->wcio_ungetwc_inbuf = 0;\
	70	} \
	71	} while (0)
	72
	73	#define WCIO_FREEUB(fp) \
	74	do {\
	75	struct wchar_io_data *_wcio = WCIO_GET(fp); \
	76	if (_wcio) { \
	77	_wcio->wcio_ungetwc_inbuf = 0;\
	78	} \
	79	} while (0)
	80
	81	#define WCIO_INIT(fp) \
	82	memset(WCIO_GET_NONULL(fp), 0, sizeof(struct wchar_io_data))
	83
	84	#endif /_WCIO_H_/