--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/crypto/weakcryptospi/test/tcryptospi/src/filecompare.cpp	Thu Sep 10 14:01:51 2009 +0300
@@ -0,0 +1,112 @@
+/*
+* Copyright (c) 2007-2009 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: 
+*
+*/
+
+
+/**
+ @file
+ @internalTechnology
+*/
+#include "filecompare.h"
+
+#include "cryptospi/cryptospidef.h"
+#include <e32std.h>
+#include <e32def.h>
+#include <f32file.h>
+
+const TInt KCompareBlockSize = 0xff;
+
+//const TInt KCompareEqual = 0;
+const TInt KCompareGreaterThan = 1;
+const TInt KCompareLessThan = -1;
+
+// a simple utility class to compare 2 files, returns
+TInt TFileCompare::CompareL(TPtrC aFile1Path, TPtrC aFile2Path)
+	{
+	// assume is all well, compare always 
+	TInt retVal = 0;
+
+	RFs 	rFs;
+	RFile	file1;
+	RFile	file2;
+
+	User::LeaveIfError(rFs.Connect());
+	CleanupClosePushL(rFs);
+	User::LeaveIfError(file1.Open(rFs, aFile1Path, EFileRead));
+	CleanupClosePushL(file1);
+	User::LeaveIfError(file2.Open(rFs, aFile2Path, EFileRead));
+	CleanupClosePushL(file2);
+	
+	TInt file1Size;
+	file1.Size(file1Size); 
+	
+	TInt file2Size;
+	file2.Size(file2Size);
+
+	// bail out if the sizes of the 2 files are different
+	if(file1Size == file2Size)
+		{
+				
+		TBuf8<KCompareBlockSize> tempBuf1;
+		TBuf8<KCompareBlockSize> tempBuf2;
+	
+		TInt compareBlockSize;
+		TInt loopCount;
+		
+		if(file1Size > KCompareBlockSize)
+		{
+			compareBlockSize = KCompareBlockSize;
+			loopCount = file1Size / compareBlockSize;
+		}
+		else
+		{
+			loopCount = 1;
+			compareBlockSize = file1Size;
+		}
+			
+	
+		// read through the files comparing each block
+		for(TInt i = 0; i < loopCount; i++)
+			{
+			
+			file1.Read(tempBuf1, compareBlockSize);
+			file2.Read(tempBuf2, compareBlockSize);
+			
+			// remember, 0 is return value for a successful comparison
+			
+			retVal = tempBuf1.Compare(tempBuf2);
+			if( retVal != 0 )
+				{
+				//if files fail to match, break out of the loop
+				break;
+				}		
+			}
+		}
+	else
+		{
+		if(file1Size > file2Size)
+			retVal = KCompareGreaterThan;
+		else
+			retVal = KCompareLessThan;
+		}
+
+	CleanupStack::PopAndDestroy(&file2);
+	CleanupStack::PopAndDestroy(&file1);
+	
+	CleanupStack::PopAndDestroy(&rFs);
+	
+	return retVal;		
+	}