diff -r 000000000000 -r 71ca22bcf22a mmserv/metadatautility/Src/MetaDataSource.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mmserv/metadatautility/Src/MetaDataSource.h	Tue Feb 02 01:08:46 2010 +0200
@@ -0,0 +1,106 @@
+/*
+* 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 provides base class for metadata source classes used
+*                by different parsers.
+*
+*/
+
+
+
+#ifndef CMETADATASOURCE_H
+#define CMETADATASOURCE_H
+
+// INCLUDES
+#include <e32base.h>
+
+// CLASS DECLARATION
+
+/**
+*  This class implements base class for metadata sources such as files or descriptors.
+*
+*  @lib MetaDataUtility.lib
+*  @since 3.0
+*/
+class CMetaDataSource : public CBase
+	{
+	public:  // Destructor
+
+		/**
+		* Destructor.
+		*/
+		virtual ~CMetaDataSource();
+
+	protected:  // Constructor
+
+        /**
+        * C++ default constructor.
+        */
+		CMetaDataSource();
+
+    public: // New functions
+
+        /**
+        * Reads sufficient data from the source to fill the specified 8-bit descriptor
+        * up to its maximum length.
+        * @since 3.0
+        * @param aDes Contains the data that was read
+		* @param aLength How many bytes will be read
+        * @return KErrNone, or one of the systemwide error codes.
+		*/
+		virtual void ReadL( TDes8& aDes ) = 0;
+
+        /**
+        * Reads data of specified length from the source into the specified 8-bit descriptor.
+        * @since 3.0
+        * @param aDes Contains the data that was read. Note that the descriptor
+		*        length must be at least aLength!
+		* @param aLength How many bytes will be read
+        * @return KErrNone, or one of the systemwide error codes.
+		*/
+		virtual void ReadL( TDes8& aDes, TInt aLength ) = 0;
+
+        /**
+        * Reads data from specified position in the source into the specified 8-bit descriptor
+        * up to its maximum length.
+        * @since 3.0
+        * @param aPos Offset from current position
+		* @param aDes Contains the data that was read
+        * @return KErrNone, or one of the systemwide error codes.
+		*/
+		virtual void ReadL( TInt aPos, TDes8& aDes ) = 0;
+
+        /**
+        * Reads data from specified position in the source into the specified 8-bit descriptor
+        * up to its maximum length.
+        * @since 3.0
+        * @param aPos Offset from current position
+		* @param aDes Contains the data that was read
+		* @param aLength How many bytes will be read
+        * @return KErrNone, or one of the systemwide error codes.
+		*/
+		virtual void ReadL( TInt aPos, TDes8& aDes, TInt aLength ) = 0;
+
+        /**
+        * Returns the size of the source in bytes.
+        * @since 3.0
+        * @param aSize On return, the size is stored here.
+        * @return KErrNone, or one of the systemwide error codes.
+		*/
+		virtual TInt Size( TInt& aSize ) const = 0;
+
+	};
+
+#endif      // CMETADATASOURCE_H
+
+// End of File