/*
 * 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 <kernel/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_