diff -r e1b950c65cb4 -r 837f303aceeb epoc32/include/pcstore/descriptors.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/epoc32/include/pcstore/descriptors.h	Wed Mar 31 12:33:34 2010 +0100
@@ -0,0 +1,122 @@
+// Copyright (c) 2006-2009 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:
+//
+
+#if !defined(__DESCRIPTORS_H__)
+#define __DESCRIPTORS_H__
+
+#include <pcstore/pcstoredef.h>
+
+namespace PCStore
+{
+class CMemoryBlock;
+/**
+@internalAll
+
+Class to represent 8-bit descriptors.
+
+This class implements a subset of 8-bit descriptor's behaviour, which are necessary 
+for the externalization and internalization of 8-bit descriptors. It encapsulates 
+the data members containing the data, its maximum length and actual length. It also 
+provides member functions to append and reset the data, as well as get the pointer of 
+the data. However, there is no method to partly modify the data.
+
+The constructors, Set, Append, and assignment methods take a copy of the data they're 
+given, which means it allocates memory to hold the data and releases it when needed.
+Data represented by this class is treated as a contiguous set of 8-bit 
+(i.e. single byte) values or data items.
+*/
+class CDes8
+	{
+public:
+	CDes8();
+	CDes8(const CDes8& aDes);
+	explicit CDes8(TInt32 aMaxLength);
+	CDes8(const TUint8* aPtr);
+	CDes8(const TUint8* aPtr, TInt32 aLength);
+	CDes8(const TUint8* aPtr, TInt32 aLength, TInt32 aMaxLength);
+	~CDes8();
+	
+	const TUint8* Ptr() const;
+	TInt32 Length() const;
+	TInt32 MaxLength() const ;
+	TInt32 Size() const;
+	
+	void SetLength(TInt32 aLength);
+	void Set(const CDes8& aDes);
+	void Set(const TUint8* aPtr, TInt32 aLength);
+	void Set(const TUint8* aPtr, TInt32 aLength, TInt32 aMaxLength);
+	void Append(const CDes8& aDes);
+	void Append(const TUint8* aPtr, TInt32 aLength);
+
+	CDes8& operator=(const CDes8& aDes);
+	TBool operator==(const CDes8& aDes) const;
+	TBool operator!=(const CDes8& aDes) const;	
+
+
+private:
+	CMemoryBlock* iMemoryBlock;
+	TInt32 iLength;
+	};
+
+
+/**
+@internalAll
+
+Class to represent 16-bit descriptor.
+
+This class implements a subset of 16-bit descriptor's behaviour, which are necessary 
+for the externalization and internalization of 16-bit descriptors. It encapsulates 
+the data members containing the data, its maximum length and actual length. It also 
+provides member functions to access and reset, but not modify, the data.
+
+The constructors, Set, Append, and assignment methods take a copy of the data they're 
+given, which means it allocates memory to hold the data and releases it when needed.
+Data represented by this class is treated as a contiguous set of 16-bit 
+(i.e. 2-byte word) values or data items.
+*/
+class CDes16
+	{
+
+public:
+	CDes16();
+	CDes16(const CDes16& aDes);
+	explicit CDes16(TInt32 aMaxLength);
+	CDes16(const TUint16* aPtr);
+	CDes16(const TUint16* aPtr, TInt32 aLength);
+	CDes16(const TUint16* aPtr, TInt32 aLength, TInt32 aMaxLength);
+	~CDes16();
+
+	const TUint16* Ptr() const;
+	TInt32 Length() const;
+	TInt32 MaxLength() const ;
+	TInt32 Size() const;
+	
+	void SetLength(TInt32 aLength);
+	void Set(const CDes16& aDes);
+	void Set(const TUint16* aPtr, TInt32 aLength);
+	void Set(const TUint16* aPtr, TInt32 aLength, TInt32 aMaxLength);
+	void Append(const CDes16& aDes);
+	void Append(const TUint16* aPtr, TInt32 aLength);
+
+	CDes16& operator=(const CDes16& aDes);
+	TBool operator==(const CDes16& aDes) const;
+	TBool operator!=(const CDes16& aDes) const;	
+
+private:
+	CMemoryBlock* iMemoryBlock;
+	TInt32 iLength;
+	};
+}
+#endif // !defined(__DESCRIPTORS_H__)