1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/persistentdata/persistentstorage/store/pcstore/src/desheader.h	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,75 @@
     1.4 +// Copyright (c) 2006-2009 Nokia Corporation and/or its subsidiary(-ies).
     1.5 +// All rights reserved.
     1.6 +// This component and the accompanying materials are made available
     1.7 +// under the terms of "Eclipse Public License v1.0"
     1.8 +// which accompanies this distribution, and is available
     1.9 +// at the URL "http://www.eclipse.org/legal/epl-v10.html".
    1.10 +//
    1.11 +// Initial Contributors:
    1.12 +// Nokia Corporation - initial contribution.
    1.13 +//
    1.14 +// Contributors:
    1.15 +//
    1.16 +// Description:
    1.17 +//
    1.18 +
    1.19 +#if !defined(__DESHEADER_H__)
    1.20 +#define __DESHEADER_H__
    1.21 +
    1.22 +#include <pcstore/pcstoredef.h>
    1.23 +
    1.24 +namespace PCStore
    1.25 +{
    1.26 +class CStoreWriteStream;
    1.27 +class CStoreReadStream;
    1.28 +class CDes8;
    1.29 +class CDes16;
    1.30 +
    1.31 +/**
    1.32 +@internalComponent
    1.33 +
    1.34 +Compact stream format for positive integer values in the range 0 to 536,870,911 ((2^29)-1). Values 
    1.35 +in the range 0-127 are stored in a single byte, 128-16383 in two bytes and other values in 4 bytes.
    1.36 +
    1.37 +The class provides conversion to and from TInt, and both externalization and internalization functions. 
    1.38 +*/
    1.39 +class TCardinality
    1.40 +	{
    1.41 +public:
    1.42 +	TCardinality(): iCount(0) {};
    1.43 +	TCardinality(TInt aCount);
    1.44 +
    1.45 +	void Externalize(CStoreWriteStream& aStream) const;
    1.46 +	void Internalize(CStoreReadStream& aStream);
    1.47 +	operator TInt() const;
    1.48 +
    1.49 +private:
    1.50 +	TUint iCount;
    1.51 +	};
    1.52 +
    1.53 +/**
    1.54 +@internalComponent
    1.55 +
    1.56 +Class for the header information of CDes8 and CDes16.
    1.57 +
    1.58 +The header information of CDes8 and CDes16 includes the data width (8 or 16 bits) and length. 
    1.59 +This class forms the header information from the given CDes8 or CDes16 data and stores it into 
    1.60 +a TCardinality object.  It also provides the member functions to externalize / internalize 
    1.61 +itself to / from a stream.
    1.62 +*/
    1.63 +class CDesHeader
    1.64 +	{
    1.65 +public:
    1.66 +	CDesHeader() {}
    1.67 +	CDesHeader(const CDes8& aDes8);
    1.68 +	CDesHeader(const CDes16& aDes16);
    1.69 +
    1.70 +	void Externalize(CStoreWriteStream& aStream) const;
    1.71 +	void Internalize(CStoreReadStream& aStream);
    1.72 +	TInt Length() const;
    1.73 +
    1.74 +private:
    1.75 +	TCardinality iVal;
    1.76 +	};
    1.77 +}
    1.78 +#endif // !defined(__DESHEADER_H__)