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/*
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* Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of the License "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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/**
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@file
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@publishedAll
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@released
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*/
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#ifndef __CAF_METADATA_H__
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#define __CAF_METADATA_H__
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#include <e32base.h>
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#include <f32file.h>
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class RReadStream;
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class RWriteStream;
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namespace ContentAccess
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{
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/** Stores a field and data pair for use in a supplier import operation
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The field and data can be any values the application doing the import thinks
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the agent will find useful. Some information that could be included here are
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headers, eg:
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"Content Type", "application/vnd.oma.drm.dm"
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The application can include anything it likes, if the agent doesn't understand
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the header it can just ignore it, eg:
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"Colour", "Yellow"
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CMetaData can be used with 8-bit or unicode data and automatically performs
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conversions between the two.
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Applications should use the unicode functions whenever possible because it
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removes the risk of losing information during the unicode to 8 bit conversion.
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*/
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class CMetaData : public CBase
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{
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public:
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/** Construct a new CMetaData with 8 bit data
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The 8-bit data will be stored in CMetaData as unicode
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@param aField The name of the field
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@param aData The data associated with the field
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@return A CMetaData object populated with the given field and data
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*/
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static CMetaData* NewL(const TDesC8& aField, const TDesC8& aData);
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/** Construct a new CMetaData with unicode data
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@param aField The name of the field
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@param aData The data associated with the field
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@return A CMetaData object populated with the given field and data
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*/
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static CMetaData* NewL(const TDesC16& aField, const TDesC16& aData);
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/** Construct a new CMetaData from a data stream
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@param aStream The stream to read the CMetaData object from
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@return A CMetaData object read from the stream
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*/
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static CMetaData* NewL(RReadStream& aStream);
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/** destructor
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*/
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virtual ~CMetaData();
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/** The field name
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@return The field name
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*/
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IMPORT_C const TDesC& Field() const;
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/** The data value
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@return The data value
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*/
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IMPORT_C const TDesC& Data() const;
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/** The field name
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@return The field name
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*/
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IMPORT_C const TDesC8& Field8() const;
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/** The data value
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@return The data value
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*/
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IMPORT_C const TDesC8& Data8() const;
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/** Write the CMetaData to a data stream
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@param aStream The stream to write the CMetaData object to
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*/
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void ExternalizeL(RWriteStream& aStream) const;
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private:
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CMetaData(TBool aUnicode);
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void ConstructL(const TDesC8& aField, const TDesC8& aData);
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void ConstructL(const TDesC16& aField, const TDesC16& aData);
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/** Read the CMetaData from a data stream
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*/
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void InternalizeL(RReadStream& aStream);
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private:
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HBufC* iField;
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HBufC* iData;
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HBufC8* iField8;
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HBufC8* iData8;
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TBool iUnicode;
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};
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}
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#endif
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