[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 $ */

/*
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (C)2001 Citrus Project,
 * All rights reserved.
 *
 * $Citrus$
 */

#ifndef _WCIO_H_
#define _WCIO_H_

#include <stddef.h>
#include <wchar.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
bf0d695d PMF	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
c0c0989a MJ	4	/*
c0c0989a MJ	5	* SPDX-License-Identifier: BSD-2-Clause
bf0d695d	6	*
c0c0989a MJ	7	* Copyright (C)2001 Citrus Project,
c0c0989a MJ	8	* All rights reserved.
bf0d695d PMF	9	*
	10	* $Citrus$
	11	*/
	12
	13	#ifndef _WCIO_H_
	14	#define _WCIO_H_
	15
b4051ad8	16	#include <stddef.h>
9f18918b	17	#include <wchar.h>
b4051ad8	18
bf0d695d PMF	19	/* minimal requirement of SUSv2 */
	20	#define WCIO_UNGETWC_BUFSIZE 1
	21
	22	struct wchar_io_data {
	23	mbstate_t wcio_mbstate_in;
	24	mbstate_t wcio_mbstate_out;
	25
	26	wchar_t wcio_ungetwc_buf[WCIO_UNGETWC_BUFSIZE];
	27	size_t wcio_ungetwc_inbuf;
	28
	29	int wcio_mode; /* orientation */
	30	};
	31
	32	#define WCIO_GET(fp) \
	33	(_EXT(fp) ? &(_EXT(fp)->_wcio) : (struct wchar_io_data *)0)
	34
240578ad PMF	35	#define WCIO_GET_NONULL(fp) \
	36	(&(_EXT(fp)->_wcio))
	37
bf0d695d PMF	38	#define _SET_ORIENTATION(fp, mode) \
	39	do {\
	40	struct wchar_io_data *_wcio = WCIO_GET(fp); \
	41	if (_wcio && _wcio->wcio_mode == 0) \
	42	_wcio->wcio_mode = (mode);\
	43	} while (0)
	44
	45	/*
	46	* WCIO_FREE should be called by fclose
	47	*/
	48	#define WCIO_FREE(fp) \
	49	do {\
	50	struct wchar_io_data *_wcio = WCIO_GET(fp); \
	51	if (_wcio) { \
	52	_wcio->wcio_mode = 0;\
	53	_wcio->wcio_ungetwc_inbuf = 0;\
	54	} \
	55	} while (0)
	56
	57	#define WCIO_FREEUB(fp) \
	58	do {\
	59	struct wchar_io_data *_wcio = WCIO_GET(fp); \
	60	if (_wcio) { \
	61	_wcio->wcio_ungetwc_inbuf = 0;\
	62	} \
	63	} while (0)
	64
	65	#define WCIO_INIT(fp) \
240578ad	66	memset(WCIO_GET_NONULL(fp), 0, sizeof(struct wchar_io_data))
bf0d695d PMF	67
bf0d695d PMF	68	#endif /_WCIO_H_/