diff -r 000000000000 -r ba25891c3a9e installationservices/swi/source/sisxrecognizer/recsisx.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/installationservices/swi/source/sisxrecognizer/recsisx.cpp	Thu Dec 17 08:51:10 2009 +0200
@@ -0,0 +1,109 @@
+/*
+* Copyright (c) 2004-2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "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: 
+*
+*/
+
+
+#include "recsisx.h"
+#include "dessisdataprovider.h"
+#include "swicommon.h"
+#include <apadef.h>
+#include "patchdata.h"
+#include <ecom/ecom.h>
+#include <ecom/implementationproxy.h>
+#include <u32hal.h> 
+
+using namespace Swi;
+
+CApaSisxRecognizer::CApaSisxRecognizer() : CApaDataRecognizerType (KApaSisx, 
+																   CApaDataRecognizerType::ENormal)
+	{
+	iCountDataTypes = KSupportedDataTypesTotal;
+	}
+
+TUint CApaSisxRecognizer::PreferredBufSize ()
+	{
+	return sizeof(TCheckedUid);
+	}
+
+TDataType CApaSisxRecognizer::SupportedDataTypeL (TInt /*aIndex*/) const
+	{
+	return TDataType(KDataTypeSisx);
+	}
+
+void CApaSisxRecognizer::DoRecognizeL (const TDesC& aName, const TDesC8& aBuffer)
+	{
+    iDataType = TDataType(KDataTypeSisx);
+    iConfidence = ENotRecognized;
+	if (aBuffer.Size() < sizeof(TCheckedUid))
+		{
+		return;
+		}	
+	TCheckedUid checkedUID(aBuffer.Mid(0, sizeof(TCheckedUid)) );
+	if (checkedUID.UidType()[0] != KUidSisxFile) 
+		return;
+
+	const TInt positionOfExtDelimiter=aName.LocateReverse(TChar(KExtDelimiter));
+	TUint8 patchableConst = KSisxRecognizerConst;
+	
+#ifdef __WINS__
+// For the emulator allow the constant to be patched via epoc.ini
+UserSvr::HalFunction(EHalGroupEmulator, EEmulatorHalIntProperty,
+	(TAny*)"KSisxRecognizerConst", &patchableConst); // read emulator property (if present)
+#endif
+
+	if (patchableConst)
+		{
+		if (positionOfExtDelimiter >= 0)
+	    	{
+	    	if ((aName.Mid(positionOfExtDelimiter).CompareF(KFileExtensionSisx) == 0) ||
+	    		(aName.Mid(positionOfExtDelimiter).CompareF(KFileExtensionLegacySis) == 0))
+	        	{
+	        	iConfidence = ECertain;
+	        	}
+			// All other extentions will be set to ENotRecognized
+	    	}
+		}
+    else
+	    {
+   		// When KSisxRecognizerConst is zero, use the following method to recognise file extentions
+	    if ((positionOfExtDelimiter >= 0) &&
+        	(aName.Mid(positionOfExtDelimiter).CompareF(KFileExtensionSisx) == 0))
+	        {
+	        iConfidence = ECertain;
+	        }
+	    else
+	    	{
+	    	iConfidence = EPossible;
+	    	}
+	    }
+	}
+
+CApaDataRecognizerType* CApaSisxRecognizer::CreateRecognizerL()
+	{
+	return new (ELeave) CApaSisxRecognizer();
+	}
+
+const TImplementationProxy ImplementationTable[] = 
+	{
+		IMPLEMENTATION_PROXY_ENTRY(0x10204FC7, CApaSisxRecognizer::CreateRecognizerL)
+	};
+
+EXPORT_C const TImplementationProxy* ImplementationGroupProxy(TInt& aTableCount)
+	{
+	aTableCount = sizeof(ImplementationTable) / sizeof(TImplementationProxy);
+	return ImplementationTable;
+	}	
+