/*

* Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

#ifndef	DESERIALISER_H

#define	DESERIALISER_H

#include <iostream>

#include <stdexcept>

#include <istream>

#include <vector>

#include "serialisable.h"

#include "cardinality.h"

#include "ucmp.h"

#pragma warning (disable: 4800)

/**

* @file DESERIALISER.H

*

* @internalComponent

* @released

*/

class Deserialiser

	{

public:

	Deserialiser(std::istream& stream) : iStream(stream)

	{}

	Deserialiser& operator>>(Serialisable& val)

	{

	val.Internalize(*this);

	return *this;

	}

	// integer types

	Deserialiser& operator>>(TInt64& val)

	{ iStream.read(reinterpret_cast<char*>(&val),8); return *this; }

	Deserialiser& operator>>(TInt& val)

	{ iStream.read((char*)&val,4); return *this; }

	Deserialiser& operator>>(TInt16& val)

	{ iStream.read((char*)&val,2); return *this; }

	Deserialiser& operator>>(TInt8& val)

	{ iStream.read((char*)&val,1) ; return *this; }

	Deserialiser& operator>>(TUint64& val)

	{ iStream.read(reinterpret_cast<char*>(&val),8);  return *this; }

	Deserialiser& operator>>(TUint32& val)

	{ iStream.read((char*)&val,4);  return *this; }

	Deserialiser& operator>>(TUint16& val)

	{ iStream.read((char*)&val,2); return *this; }

	Deserialiser& operator>>(TUint8& val)

	{iStream.read((char*)&val,1); return *this; }

	Deserialiser& operator>>(bool& val)

	{

	TUint32 x = 0;

	iStream.read((char*)&x,4);

	val = (bool)x;

	return *this;

	}

	template <class T>

	Deserialiser& operator>>(std::vector<T>& val)

	{

	TUint32 size = 0;

	*this >> size;

	val.resize(size);

	for (TUint32 i = 0; i < size ; ++i)

		{

		*this >> val[i];

		}

	return *this;

	}

#ifndef _MSC_VER

	template <class T>

	Deserialiser& operator>>(std::vector<T*>& val)

	{

	TUint32 size = 0;

	*this >> size;

	val.resize(size);

	for (TUint32 i = 0; i < size ; ++i)

		{

		val[i] = new T;

		*this >> *val[i];

		}

	return *this;

	}

#endif

	Deserialiser& operator>>(std::string& val)

	{

	Cardinality card;

	*this >> card;

	TUint32 size = card;

	char* buff = 0;

	if (size & 0x01)

		{

		// 8-bit

		size = size >> 1;

		buff = new char[(int)size];

		iStream.read(buff, size);

		}

	else

		{

		throw std::runtime_error("Decoding unicode into std::string");

		}

	val.assign(buff, size);

	delete buff;

	return *this;

	}

	Deserialiser& operator>>(std::wstring& val)

	{

	Cardinality card;

	*this >> card;

	TUint32 size = card;

	wchar_t* buff = 0;

	if (size & 0x01)

		{

		throw std::runtime_error("Decoding 8bit text into std::wstring");

		}

	else

		{

		size = size >> 1;

		buff = new wchar_t[(int)size];

		TUnicodeExpander exp;

		TMemoryUnicodeSink sink((TUint16*)buff);

		exp.ExpandL(sink, *this ,size);

		}

	val.assign(buff, size);

	delete buff;

	return *this;

	}

	void read(TUint8* aDst, TUint32 aCount)

	{

	iStream.read((char*)aDst, aCount);

	}

private:

	std::istream& iStream;

	};

#endif	/* DESERIALISER_H */