haiku/headers/private/app/MessageAdapter.h

/*
 * Copyright 2007-2015, Haiku Inc. All rights reserved.
 * Distributed under the terms of the MIT License.
 *
 * Authors:
 *		Michael Lotz <mmlr@mlotz.ch>
 */
#ifndef _MESSAGE_ADAPTER_H_
#define _MESSAGE_ADAPTER_H_


#include <Message.h>
#include <util/KMessage.h>


// message formats
#define MESSAGE_FORMAT_R5				'FOB1'
#define MESSAGE_FORMAT_R5_SWAPPED		'1BOF'
#define MESSAGE_FORMAT_DANO				'FOB2'
#define MESSAGE_FORMAT_DANO_SWAPPED		'2BOF'
#define MESSAGE_FORMAT_HAIKU			'1FMH'
#define MESSAGE_FORMAT_HAIKU_SWAPPED	'HMF1'


namespace BPrivate {


class MessageAdapter {
public:
	static	ssize_t				FlattenedSize(uint32 format,
									const BMessage* from);

	static	status_t			Flatten(uint32 format, const BMessage* from,
									char* buffer, ssize_t* size);
	static	status_t			Flatten(uint32 format, const BMessage* from,
									BDataIO* stream, ssize_t* size);

	static	status_t			Unflatten(uint32 format, BMessage* into,
									const char* buffer);
	static	status_t			Unflatten(uint32 format, BMessage* into,
									BDataIO* stream);

	static	status_t			ConvertToKMessage(const BMessage* from,
									KMessage& to);

private:
	static	status_t			_ConvertFromKMessage(const KMessage* from,
									BMessage* to);

	static	ssize_t				_R5FlattenedSize(const BMessage* from);

	static	status_t			_FlattenR5Message(uint32 format,
									const BMessage* from, char* buffer,
									ssize_t* size);

	static	status_t			_UnflattenR5Message(uint32 format,
									BMessage* into, BDataIO* stream);
	static	status_t			_UnflattenDanoMessage(uint32 format,
									BMessage* into, BDataIO* stream);
};


} // namespace BPrivate


#endif // _MESSAGE_ADAPTER_H_