/*

* Copyright (c) 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: 

*

*/

#ifndef __CHARVESTERM3UPLAYLISTPARSER_H__

#define __CHARVESTERM3UPLAYLISTPARSER_H__

#include <charconv.h>

//

// CAudioMDParser

//

class CHarvesterM3UPlaylistParser : public CBase

	{

	public:

		static CHarvesterM3UPlaylistParser* NewL( RFs& aFs,

		        CArrayFix<CCnvCharacterSetConverter::SCharacterSet>* aAvailableCharacterSet,

		        CArrayFix<CCnvCharacterSetConverter::SCharacterSet>* aTopCharacterSet );

		virtual ~CHarvesterM3UPlaylistParser();

        TBool ParseL( const TDesC& aFileName, RPointerArray<HBufC>& aUriArray );

        void Reset();

	private:

        CHarvesterM3UPlaylistParser( RFs& aFs,

                CArrayFix<CCnvCharacterSetConverter::SCharacterSet>* aAvailableCharacterSet,

                CArrayFix<CCnvCharacterSetConverter::SCharacterSet>* aTopCharacterSet );

        /**

        * Reads data from playlist file to the buffer

        */

        void ReadPlaylistFileToBufferL();

        /**

        * Parses the buffer where playlist file was read to.

        */

        void ParsePlaylistBufferL(

        		RPointerArray<HBufC>& aPlaylist,

                TInt& aInvalidItemCount);

        /**

        * Auto detects the character encoding from the supplied character

        * set

        * @param aSample a sample of the file

        * @param aCharSetId auto-detected character set for the supplied

        *        sample

        * @param aCharacterSet a character set to detect the encoding from

        * @return KErrNone if a character set is found; otherwise

        *         KErrNotFound.

        */

        TInt DetectCharacterSetL(

            const TDesC8& aSample,

            const CArrayFix<CCnvCharacterSetConverter::SCharacterSet>& aCharacterSet,

            TUint& aCharSetId );

        /**

        * Reads next line from iBuffer and stores it to iLine. Returns EFalse

        * if there are no more new lines.

        */

        TBool ReadNextLineL();

        /**

        * Decides what to do with an iLine read from iBuffer

        */

        void ProcessLineL(

        		RPointerArray<HBufC>& aPlaylist,

                TInt& aInvalidItemCount);

        /**

        * Parses path or extended info from an iLine and stores them to iItem

        */

        TInt ParseLineL(

                TFileName& aItem,

                TInt& aInvalidItemCount);

        /**

        * Parses and returns an absolute path if aPath is relative to playlist

        * file's path. If path is not valid or it doesn't exist, error code is

        * returned in aError.

        *

        * caller assumes ownership of the returned HBufC

        */

        HBufC* ParseAbsolutePathLC(

                const TDesC& aPath,

                TInt& aError);

    private:

        RFs& iFs;

        TPtrC iPlaylistFilePath;

        TInt iInvalidItems;

        HBufC* iBuffer;

        TPtrC iBufferPtr;

        // Not owned.

        CArrayFix<CCnvCharacterSetConverter::SCharacterSet>* iAvailableCharacterSet;

        CArrayFix<CCnvCharacterSetConverter::SCharacterSet>* iTopCharacterSet;

        TInt iEndLineNumber;  

        TInt iCurrentLineNumber;

        HBufC* iLine;

        TBool iExtendedFormat;

        TFileName iItem;

	};

#endif  // __CHARVESTERM3UPLAYLISTPARSER_H__