/*

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

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "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: 

*

*/

// disable "identifier was truncated to '255' characters in the browser information" warning

#pragma warning (disable:4786)

// disable "decorated name length exceeded, name was truncated" warning	

#pragma warning (disable:4503)

#include "MifHandler.h"

#include <fstream>

#include <CdlCompilerToolkit/CdlTkUtil.h>

using namespace std;

using namespace CdlCompilerToolkit;

void MifHandler::Read(const string& mifName)

	{

	ifstream file;

	CdlTkUtil::OpenInput(file, mifName, ios::binary);

	file.seekg(0, ios::end);

	int fileSize = file.tellg();

	file.seekg(0);

	if (!file.read((char*)&iHeader.iV2, sizeof(iHeader.iV2)))

		throw CdlTkAssert(mifName + " - header read failed");

	if (iHeader.iV2.iVersion < 2)

		throw CdlTkAssert(mifName + " - cannot convert old mif file");

	if (iHeader.iV2.iVersion > 2)

		throw CdlTkAssert(mifName + " - mif file already converted");

	iIndex.resize(iHeader.iV2.iArrayLen);

	iIndexBytes = iHeader.iV2.iArrayLen * sizeof(MifIdx);

	if (!file.read((char*)&iIndex[0], iIndexBytes))

		throw CdlTkAssert(mifName + " - index read failed");

	iDataBytes = fileSize - sizeof(iHeader.iV2) - iIndexBytes;

	iData.resize(iDataBytes+1);

	if (!file.read(&iData[0], iDataBytes))

		throw CdlTkAssert(mifName + " - data read failed");

	file.close();

	}

const MifIndex& MifHandler::Index()

	{

	return iIndex;

	}

void MifHandler::Modify(const string& dllUid)

	{

	int uid = CdlTkUtil::ParseInt(dllUid);

	iHeader.iV2.iVersion = 3;

	iHeader.iV2.iOffset = sizeof(iHeader);

	iHeader.iV3.iIndexDllUid = uid;

	// added on an extra header field, but removed the index table

	int offsetShift = sizeof(MifHeaderV3) - iIndexBytes;

	for (int i=0; i<iIndex.size(); i++)

		{

		MifIdx& index = iIndex[i];

		if (index.iOffset > 0)

			index.iOffset += offsetShift;

		}

	}

void MifHandler::Write(const string& mifName)

	{

	BackupOriginal(mifName);

	ofstream file;

	CdlTkUtil::OpenOutput(file, mifName, ios::binary);

	file.write((char*)&iHeader, sizeof(iHeader));

	file.write(&iData[0], iDataBytes);

	file.close();

	}

void MifHandler::BackupOriginal(const string& mifName)

	{

	CdlTkUtil::CopyFile(mifName, mifName+".orig", ios::binary);

	}