/**

* 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 "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 XmlParsing.h

*/

#ifndef _XMLPARSING_H_

#define _XMLPARSING_H_

#include <xml/contenthandler.h>

#include <xml/documentparameters.h>

#include <xml/taginfo.h>

#include <xml/attribute.h>

#include <elements/sd_mintercept.h>

static const TUint KXmlParsingBufferMaxLength = 128;

typedef TBuf8<KXmlParsingBufferMaxLength> TXmlTempBuf8;

_LIT8(KXmlMimeType, "text/xml");

class TLookupTableEntry8

	{

public:

	TPtrC8 iIdentifier;

	TUint iValue;

	};

class CExpressionXmlHandler : public Xml::MContentHandler

	{

	// MContentHandler

protected:

	void OnStartDocumentL(const Xml::RDocumentParameters& /*aDocParam*/, TInt /*aErrorCode*/) {}

	void OnEndDocumentL(TInt /*aErrorCode*/) {}

	void OnStartElementL(const Xml::RTagInfo& /*aElement*/, const Xml::RAttributeArray& /*aAttributes*/, TInt /*aErrorCode*/) {}

	void OnEndElementL(const Xml::RTagInfo& /*aElement*/, TInt /*aErrorCode*/) {}

	void OnContentL(const TDesC8& /*aBytes*/, TInt /*aErrorCode*/){}

	void OnStartPrefixMappingL(const RString& /*aPrefix*/, const RString& /*aUri*/, TInt /*aErrorCode*/){}

	void OnEndPrefixMappingL(const RString& /*aPrefix*/, TInt /*aErrorCode*/){}

	void OnIgnorableWhiteSpaceL(const TDesC8& /*aBytes*/, TInt /*aErrorCode*/){}

	void OnSkippedEntityL(const RString& /*aName*/, TInt /*aErrorCode*/) {}

	void OnProcessingInstructionL(const TDesC8& /*aTarget*/, const TDesC8& /*aData*/, TInt /*aErrorCode*/){}

	void OnExtensionL(const RString& /*aData*/, TInt /*aToken*/, TInt /*aErrorCode*/){}

	void OnError(TInt /*aErrorCode*/){}

	TAny* GetExtendedInterface(const TInt32 /*aUid*/){return NULL;}

	void FetchAttributeValueByNameL(

		const Xml::RAttributeArray& aAttributes,

		const TDesC8& aAttributeTag,

		TDes8& aAttributeValue);

	enum TLookupTableType {EUidTable, EMessageIdTable, ETierIdTable, EAccessPointIdTable, EErrorCodeTable, EActionTypeTable, ERealmIdTable};

	void ParseIdentifierValueL(const TDesC8& aBuffer, TDes8& aIdentifier);

	void ParseHexValueL(const TDesC8& aBuffer, TUint& aHexValue);

	void LookupValueByNameL(TLookupTableType aLookupType, const TDesC8& aName, TUint& aValue);

	void FetchValueOrNamedValueL(TLookupTableType aType, const TDesC8& aBuffer, TUint& aValue);

	};

class CActionXmlHandler : public CExpressionXmlHandler

	{

	public:

		CActionXmlHandler();

		CActionXmlHandler(Den::TAction& aParsedAction) : iAction(aParsedAction) {}

		virtual ~CActionXmlHandler() {}

	private:

		// From MContentHandler

		void OnStartElementL(const Xml::RTagInfo& aElement, const Xml::RAttributeArray& aAttributes, TInt aErrorCode);

		void ParseActionTypeAttributeL(const Xml::RAttributeArray& aAttributes, Den::TAction::TActionType& aActionType);

		void ParseActionErrorCodeAttributeL(const Xml::RAttributeArray& aAttributes, TInt& aError);

		Den::TAction& iAction;

	};

class CEventExpressionXmlHandler : public CExpressionXmlHandler

	{

	public:

		CEventExpressionXmlHandler();

		CEventExpressionXmlHandler(Den::TEventExpression& aEventExpression) :

			iEventExpression(aEventExpression),

			iParseState(EEventElement) {}

		virtual ~CEventExpressionXmlHandler() {}

	private:

		// From MContentHandler

		void OnStartElementL(const Xml::RTagInfo& aElement, const Xml::RAttributeArray& aAttributes, TInt aErrorCode);

		void OnEndElementL(const Xml::RTagInfo& /*aElement*/, TInt /*aErrorCode*/);

		void ParseProviderInfoAttributeL(const Xml::RAttributeArray& aAttributes, TUid& aTierId, TUint& aAPId);

		void ParseUidAttributeL(const Xml::RAttributeArray& aAttributes, TUid& aUid);

		void ParseNodeTagAttributeL(const Xml::RAttributeArray& aAttributes, TDes8& aTagToApply);

		void ParseNodeTagToApplyAttributeL(const Xml::RAttributeArray& aAttributes, TDes8& aTagToApply);

		void ParseNodeExpressionElementL(

			const Xml::RTagInfo& aElementName,

			const Xml::RAttributeArray& aAttributes,

			Den::TNodeExpression& aNodeExpression);

		void ParseMessageElementL(

			const Xml::RTagInfo& aElementName,

			const Xml::RAttributeArray& aAttributes,

			Den::TMsgExpression& aMessage);

		void ParseNamedNumericAttributeL(

			const TDesC8& aAttribName,

			const Xml::RAttributeArray& aAttributes,

			TLookupTableType aTableId,

			TUint& aParsedValue);

		Den::TNodeExpression iSender;

		Den::TMsgExpression iMessage;

		Den::TNodeExpression iReceiver;

		Den::TEventExpression& iEventExpression;

		enum TParseState {EEventElement, ESenderNodeElement, EMsgElement, EReceiverNodeElement, EDone};

		TParseState iParseState;

	};

#endif // _XMLPARSING_H_