// Copyright (c) 2005-2009 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:

//

/**

 @file

*/

#include "CConfigFileParserUtils.h"

#include <f32file.h>

const TInt KFileBufferSize = 1024;

_LIT8(KComment,"*#*");

CConfigFileParserUtils* CConfigFileParserUtils::NewL(const TDesC& aFileName)

	{

	CConfigFileParserUtils* self = new (ELeave) CConfigFileParserUtils();

	CleanupStack::PushL(self);

	self->ConstructL(aFileName);

	CleanupStack::Pop();

	return self;

	}

CConfigFileParserUtils::CConfigFileParserUtils()

	{

	}

CConfigFileParserUtils::~CConfigFileParserUtils()

	{

	iName.ResetAndDestroy();

	iContent.ResetAndDestroy();

	iContent8.ResetAndDestroy();

	}

void CConfigFileParserUtils::ConstructL(const TDesC& aFileName)

	{

	RFs fs;

	fs.Connect();

	RFile file;

	User::LeaveIfError(file.Open(fs,aFileName,EFileRead));

	TInt eof = EFalse;

	TInt fileOffset = 0;

	TBuf8<KFileBufferSize> fileBuffer;

	while (!eof)

		{

		fileBuffer.SetLength(0);

		User::LeaveIfError(file.Read(fileOffset,fileBuffer,KFileBufferSize));

		TInt read = fileBuffer.Length();

		if (read < KFileBufferSize)

			{

			fileBuffer.Append('\n');

			eof = ETrue;

			}

		TInt lineOverflow = fileBuffer.Locate('\n');

		if ((lineOverflow == KErrNotFound) && (read == KFileBufferSize))

			User::Leave(KErrOverflow);

		TInt eol = EFalse;

		while (!eol)

			{

			TInt lineFeedLocation = fileBuffer.Locate('\n');

			if (lineFeedLocation == KErrNotFound)

				eol = ETrue;

			else

				{

				fileOffset += lineFeedLocation + 1;

				TInt lineLength;

				if ((lineFeedLocation != 0) && (fileBuffer[lineFeedLocation-1] == '\r'))

					lineLength = lineFeedLocation-1;

				else

					lineLength = lineFeedLocation;

				TPtrC8 line  = fileBuffer.Left(lineLength);

				TInt commentLocation = line.Match(KComment);

				if (commentLocation != KErrNotFound)

					{

					TPtrC8 skipComment = line.Left(commentLocation);

					line.Set(skipComment);

					}

				TInt seperatorLocation = line.Locate('=');

				if (seperatorLocation != KErrNotFound)

					if ((seperatorLocation == 0) || (seperatorLocation == line.Length()-1))

						seperatorLocation = KErrNotFound;

				if (seperatorLocation != KErrNotFound)

					{

					TPtrC8 namePtr = line.Left(seperatorLocation);

					HBufC8* nameBuf8 = HBufC8::NewL(namePtr.Length());

					CleanupStack::PushL(nameBuf8);

					TPtr8 name8 = nameBuf8->Des();

					name8.Copy(namePtr);

					name8.Trim();

					HBufC* nameBuf16 = HBufC::NewL(namePtr.Length());

					TPtr name16 = nameBuf16->Des();

					name16.Copy(name8);

					iName.Append(nameBuf16);

					CleanupStack::PopAndDestroy(nameBuf8);

					TPtrC8 contentPtr = line.Mid(seperatorLocation+1);

					HBufC8* contentBuf8 = HBufC8::NewL(contentPtr.Length());

					CleanupStack::PushL(contentBuf8);

					TPtr8 content8 = contentBuf8->Des();

					content8.Copy(contentPtr);

					content8.Trim();

					HBufC* contentBuf16 = HBufC::NewL(contentPtr.Length());

					TPtr content16 = contentBuf16->Des();

					content16.Copy(content8);

					iContent.Append(contentBuf16);

					iContent8.Append(contentBuf8);

					CleanupStack::Pop(contentBuf8);

					}

				TPtrC8 theRest = fileBuffer.Mid(lineFeedLocation+1);

				fileBuffer.Copy(theRest);

				}

			}

		}

	fs.Close();

	}

TInt CConfigFileParserUtils::GetFieldAsInteger(const TDesC& aFieldName,TInt& aValue)

	{

	TInt count = iName.Count();

	for (TInt i=0; i<count; i++)

		{

		if (iName[i]->Compare(aFieldName) == 0)

			{ 

			TPtrC content = iContent[i]->Des();

			TLex lex(content);

			lex.Val(aValue);

			return (KErrNone);

			}

		}

	return (KErrNotFound);

	}

TInt CConfigFileParserUtils::GetFieldAsString(const TDesC& aFieldName,TPtrC& aString)

	{

	TInt count = iName.Count();

	for (TInt i=0; i<count; i++)

		{

		if (iName[i]->Compare(aFieldName) == 0)

			{ 

			aString.Set(*iContent[i]);

			return (KErrNone);

			}

		}

	return (KErrNotFound);

	}

TInt CConfigFileParserUtils::GetFieldAsString8(const TDesC& aFieldName,TPtrC8& aString)

	{

	TInt count = iName.Count();

	for (TInt i=0; i<count; i++)

		{

		if (iName[i]->Compare(aFieldName) == 0)

			{ 

			aString.Set(*iContent8[i]);

			return (KErrNone);

			}

		}

	return (KErrNotFound);

	}