// Copyright (c) 2004-2009 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 contains internal classes for comparing two URIs to determine

// if they identify the same resource

// 

//

/**

 @file TEquiv.h

 @see Uri8.h

*/

#ifndef __TEQUIV_H__

#define __TEQUIV_H__

#include <uri8.h>

#include <delimitedparser8.h>

/**

	Comments : 

	@internalComponent

	@released

*/

class TEquiv

	{

public:

	enum THeaderType

		{

		EHeaderNormal,

		EHeaderId,

		EHeaderContact,

		EHeaderEncoding,

		EHeaderLength,

		EHeaderType,

		EHeaderFrom,

		EHeaderSubject,

		EHeaderTo

		};

public:

	TEquiv(const TUriC8& aLhs, const TUriC8& aRhs);

	TInt EquivalentL() const;

protected:

	// Default implementation is for network schemes

	// Overide the following methods where appropriate for other schemes

	virtual TBool IsMatchSchemeL() const;

	virtual TBool IsMatchUserInfoL() const;

	virtual TBool IsMatchHostL() const;

	virtual TBool IsMatchPortL() const;

	virtual TBool IsMatchPathL() const;

	virtual TBool IsMatchQueryL() const;

	virtual TBool IsMatchFragmentL() const;

	// general utility methods

	HBufC8* DecodedSegmentLC(const TUriC8& aUri, TUriComponent aSegmentType) const;

	inline TBool IsMatchCaseless(const TDesC8& aLhs, const TDesC8& aRhs) const;

	inline TBool IsMatchCaseSensitive(const TDesC8& aLhs, const TDesC8& aRhs) const;

protected:

	const TUriC8& iLhs;

	const TUriC8& iRhs;

	};

/**

	Comments : This class provides the functionality for Comparing SIP URIs.

	@internalComponent

	@released

*/

class TEquivSip: public TEquiv

	{

public:

	TEquivSip(const TUriC8& aLhs, const TUriC8& aRhs);

	// from TEquiv

private:

	virtual TBool IsMatchHostL() const;

	virtual TBool IsMatchPathL() const;

	virtual TBool IsMatchQueryL() const;

	virtual TBool IsMatchFragmentL() const;

	// supporting methods

	void RemoveLeadingZeros(TPtr8 aHost) const;

	TBool IsMatchHostL(const TDesC8& aLhs, const TDesC8& aRhs) const;

	TBool IsParamCompatibleL(const TDesC8& aLhsName, const TDesC8& aLhsValue, const TDesC8& aRhsName, const TDesC8& aRhsValue) const;

	TBool IsParamListCompatibleL(const TDelimitedParserBase8& aLhsParser, const TDelimitedParserBase8& aRhsParser) const;

	TInt ListLength(const TDelimitedParserBase8& aParser) const;

	TBool HasMoreParameters(const TDelimitedParserBase8& aLhsParser, const TDelimitedParserBase8& aRhsParser) const;

	THeaderType HeaderType(const TDesC8& aHeaderName) const;

	TBool IsMatchHeader(const TDesC8& aLhs, const TDesC8& aRhs) const;

	TBool IsQueryListCompatible(const TDelimitedParserBase8& aLhsParser, const TDelimitedParserBase8& aRhsParser) const;

};

inline TBool TEquiv::IsMatchCaseless(const TDesC8& aLhs, const TDesC8& aRhs) const

	{

	return (aLhs.CompareF(aRhs) == 0);

	}

inline TBool TEquiv::IsMatchCaseSensitive(const TDesC8& aLhs, const TDesC8& aRhs) const

	{

	return (aLhs.Compare(aRhs) == 0);

	}

#endif	// __TEQUIV_H__