--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/secureswitools/swisistools/source/rscparser/dictionarycompression.h	Fri May 14 15:58:48 2010 +0300
@@ -0,0 +1,60 @@
+// Copyright (c) 2010 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:
+// dictionarycompression.h
+//
+/** 
+* @file dictionarycompression.h
+*
+* @internalComponent
+* @released
+*/
+#if !defined(__DICTIONARYCOMPRESSION_H__)
+#define __DICTIONARYCOMPRESSION_H__
+
+#include <string>
+#include "commontypes.h"
+#include <cassert>
+
+/**
+This class implements a stream of bits (least significant bit first) as used by the code reading dictionary-compressed resource-files
+@internalComponent
+*/
+class RDictionaryCompressionBitStream
+	{
+public:
+	RDictionaryCompressionBitStream();
+	void OpenL(
+		TInt aNumberOfBitsUsedForDictionaryTokens,
+		TInt aOffsetToFirstBit,
+		TInt aOffsetOnePastLastBit,
+		TBool aTransferringOwnershipOfBuffer,
+		TUint8* aBuffer);
+	void Close();
+	TBool EndOfStreamL() const;
+	TInt IndexOfDictionaryEntryL(); // increments the current bit-position if it returns a value >=0; returns a negative value if the next thing in the stream is plain data rather than the index of a dictionary entry
+ 	void ReadL(Ptr8 aBufferToAppendTo,TBool aCalypsoFileFormat); // can only be called if IndexOfDictionaryEntry returned a negative value
+private:
+	TBool CurrentBitIsOn() const; // does not increment the current bit-position
+	TUint ReadIntegerL(TInt aNumberOfBits); // increments the current bit-position
+private:
+	TInt iNumberOfBitsUsedForDictionaryTokens;
+	TInt iOffsetToFirstBit;
+	TInt iOffsetToCurrentBit;
+	TInt iOffsetOnePastLastBit;
+	TBool iOwnsBitBuffer;
+	TUint8* iBuffer;
+	};
+
+#endif
+