/*

* Copyright (c) 2004 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:  This class implements an 3gp metadata parser as specified in

*                www.3gpp.org (specification 3GPP TS 26.244 V6.0.0).

*

*/

#ifndef CMetaDataParserDcf_H

#define CMetaDataParserDcf_H

// INCLUDES

#include <e32base.h>

#include "MetaDataSourceFile.h"

#include "MetaDataParser.h"

#include "MetaDataFieldContainer.h"

#include "MetaDataField.h"

// CONSTANTS

// CLASS DECLARATION

/**

*  This class implements an 3gp metadata parser.

*

*  @lib MetaDataUtility.lib

*  @since 3.0

*/

class CMetaDataParserDcf : public CMetaDataParser

	{

    public:  // Constructors and destructor

        /**

        * Two-phased constructor.

        * @return A pointer to a new instance of parser; NULL if parser is not created.

        */

        static CMetaDataParserDcf* NewL();

        /**

        * Destructor.

        */

        virtual ~CMetaDataParserDcf();

    public: // Functions from base classes

        /**

        * From CMetaDataParser

        * Parses the source and if metadata is found, the metadata fields are

        * inserted into the container.

        * @since 3.0

		* @param aWantedFields An array of TMetaDataFieldId's. Empty array is interpreted as all fields.

        * @param aContainer On return, metadata found in aSource is stored here

		* @return void

        */

		void ParseL( const RArray<TMetaDataFieldId>& aWantedFields, CMetaDataFieldContainer& aContainer );

    public: // New functions

        /**

        * Initializes the parser with the specified file.

        * @since 3.0

		* @param aFileName The name of the file

		* @return void

        */

		void InitializeFileL( CMetaDataSource* aSource );

	private:

        /**

        * C++ default constructor.

        */

		CMetaDataParserDcf();

        /**

        * By default Symbian 2nd phase constructor is private.

        */

		void ConstructL();

		/**

		* Validates whether this is valid DCF source or not.

		* @return ETrue if valid, EFalse otherwise.

		*/

		TBool ValidateL();

        /**

        * Converts to unicode.

		* @param aDesc Source to be converted to unicode.

		* @param aUnicode Contains the converted unicode on return.

        * @return The number of unconverted characters left at the end of the input descriptor

        *	(e.g. because the output descriptor is not long enough to hold all the text),

        *	or one of the error values defined in TError.

		*/

		TInt ConvertToUnicodeL( const TDesC8& aDesc, TDes16& aUnicode );

	private:

        /**

        * Reads meta data from DCF header. Leaves on error.

		* @param aEntryName name of header field to read.

		* @param aFieldId field id defined in MetaDataField.hrh.

        * @return void

		*/

		void ReadMetaDataEntryL(TInt aEntryName, TMetaDataFieldId aFieldId);

 	private:	// Data

		// source

		CMetaDataSource* iSource;

    };

#endif      // CMetaDataParserDcf_H

// End of File