--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/realtimenetprots/sipfw/SigComp/CompDeflate/src/MessageWriter.cpp	Tue Feb 02 01:03:15 2010 +0200
@@ -0,0 +1,120 @@
+// Copyright (c) 2003-2009 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:
+// Name        : MessageWriter.cpp
+// Part of     : compressor
+// Interface   : 
+// SigComp message writer
+// Version     : 1.0
+//
+
+
+
+
+#include <e32base.h>
+#include <badesca.h>
+
+#include "MessageWriter.h"
+
+/** Message delimeter, appended whe streaming protocol is enabled */
+static const TUint16 KMessageDelimeter = 0xffff;
+
+CMessageWriter::CMessageWriter(CBufBase* aBuffer, TBool aStreamBasedProtocol)
+                :iBuffer(aBuffer), iStreamBasedProtocol(aStreamBasedProtocol),
+                iCount(0)
+    {
+    }
+
+void CMessageWriter::WriteByteL(TInt aByte)
+    {
+    TUint8 tmp;
+
+    if(iStreamBasedProtocol)
+        {
+        if(aByte == 0xFF)
+            {
+            iCount++;
+            }
+        else
+            {
+            if(iCount)
+                {
+                iCount--;
+
+                tmp = 0xFF;
+                iBuffer->InsertL(iBuffer->Size(), &tmp, 1);
+                tmp = static_cast<TUint8>(iCount);
+                iBuffer->InsertL(iBuffer->Size(), &tmp, 1);
+
+                for(TInt i=0; i<(iCount); i++)
+                    {
+                    tmp = 0xFF;
+                    iBuffer->InsertL(iBuffer->Size(), &tmp, 1);
+                    }
+
+                iCount = 0;
+                tmp = static_cast<TUint8>(aByte);
+                iBuffer->InsertL(iBuffer->Size(), &tmp, 1);
+                }
+            else
+                {
+                tmp = static_cast<TUint8>(aByte);
+                iBuffer->InsertL(iBuffer->Size(), &tmp, 1);
+                }
+            }
+        }
+    else
+        {
+        tmp = static_cast<TUint8>(aByte);
+        iBuffer->InsertL(iBuffer->Size(), &tmp, 1);
+        }
+    }
+
+void CMessageWriter::WriteBlockL(const TDesC8& aBlock)
+    {
+    for(TInt i=0; i<aBlock.Length(); i++)
+        {
+        WriteByteL(aBlock[i]);
+        }
+    }
+
+void CMessageWriter::FlushAndTerminateL()
+    {
+    if(iStreamBasedProtocol)
+        {
+        if(iCount)
+            {
+            TUint8 tmp;
+
+// this code is not covered, because there is no way for deflate compressor
+// to output FF at the end of compressed message, the EOS character encoding
+// flushes all FFs in WriteByteL()
+// I left the code there, as it may be usefull for other compressors.
+
+            iCount--;
+
+            tmp = 0xFF;
+            iBuffer->InsertL(iBuffer->Size(), &tmp, 1);
+            tmp = static_cast<TUint8>(iCount);
+            iBuffer->InsertL(iBuffer->Size(), &tmp, 1);
+
+            for(TInt i=0; i<(iCount); i++)
+                {
+                tmp = 0xFF;
+                iBuffer->InsertL(iBuffer->Size(), &tmp, 1);
+                }
+            iCount = 0;
+            }
+        iBuffer->InsertL(iBuffer->Size(), &KMessageDelimeter, 2);
+        }
+    }