--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/pkiutilities/DeviceToken/Inc/DevTokenNullStream.h	Tue Jan 26 15:20:08 2010 +0200
@@ -0,0 +1,72 @@
+/*
+* Copyright (c) 2006 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:   The header file of DevTokenNullStream
+*
+*/
+
+
+
+#ifndef __DEVTOKENNULLSTREAM_H__
+#define __DEVTOKENNULLSTREAM_H__
+
+#include <s32strm.h>
+#include <s32buf.h>
+
+/**
+ * Implementation of the MStreamBuf interface that throws away all data written
+ * to it.  It does not support reading
+ *
+ *  @lib DevTokenShared.dll
+ *  @since S60 v3.2.
+ */
+class TNullBuf : public MStreamBuf
+    {
+    public:
+    
+        TNullBuf();
+    
+        TUint BytesWritten();
+        
+    private:
+    
+        virtual void DoWriteL(const TAny* aPtr,TInt aLength);
+        
+    private:
+    
+        TUint iBytesWritten;
+    }; 
+
+
+/**
+ * A write stream that throws away all its input, but keeps track of how many
+ * bytes have been written to it.  It is used for determining the amount of
+ * memory needed to store externalised objects.
+ * 
+ *  @lib DevTokenShared.dll
+ *  @since S60 v3.2.
+ */
+class RNullWriteStream : public RWriteStream
+    {
+    public:
+        RNullWriteStream();
+        TUint BytesWritten();
+    
+    private:
+        TNullBuf iSink;
+    };
+
+#endif //__DEVTOKENNULLSTREAM_H__
+
+//EOF
+