// Copyright (c) 1997-2009 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:

//

#include "agmutil.h"

_LIT(KAgendaPanicString, "Agenda Model");

const TInt KInitialHashValue = 5381; // start with a big prime number for the hash algorithm  

EXPORT_C void Panic(TAgmPanic aPanic)

/**

@internalAll

*/

	{

	User::Panic(KAgendaPanicString, aPanic);

	}

/** Hash a Guid

Uses the Djb2 Hash Algorithm

@internalAll

@released

*/

EXPORT_C TUint32 GenerateHash8L(const TDesC8& aString)

	{

	__ASSERT_ALWAYS(aString.Length() > 0, User::Leave(KErrArgument));

	// Uses the Djb2 Hash Algorithm

	TUint32 hash(KInitialHashValue); 

	const TInt KLen = aString.Length();

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

		{

		hash = ((hash << 5) + hash) + aString[i];

		}

	return (hash);

	}

/** Hash a Guid

Uses the Djb2 Hash Algorithm

@internalAll

@released

*/

EXPORT_C TUint32 FoldAndGenerateHashL(const TDesC& aFileName)

	{

	__ASSERT_ALWAYS(aFileName.Length() > 0, User::Leave(KErrArgument));

	// Uses the Djb2 Hash Algorithm

	TUint32 hash(KInitialHashValue);

	const TInt KLen = aFileName.Length();

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

		{

		TChar thisChar = aFileName[i];

		thisChar.Fold(); // fold as this function only used for file names

		hash = ((hash << 5) + hash) + thisChar;

		}

	return (hash);

	}