1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/os/security/crypto/weakcryptospi/test/tcryptospi/src/filecompare.cpp	Fri Jun 15 03:10:57 2012 +0200
     1.3 @@ -0,0 +1,112 @@
     1.4 +/*
     1.5 +* Copyright (c) 2007-2009 Nokia Corporation and/or its subsidiary(-ies).
     1.6 +* All rights reserved.
     1.7 +* This component and the accompanying materials are made available
     1.8 +* under the terms of the License "Eclipse Public License v1.0"
     1.9 +* which accompanies this distribution, and is available
    1.10 +* at the URL "http://www.eclipse.org/legal/epl-v10.html".
    1.11 +*
    1.12 +* Initial Contributors:
    1.13 +* Nokia Corporation - initial contribution.
    1.14 +*
    1.15 +* Contributors:
    1.16 +*
    1.17 +* Description: 
    1.18 +*
    1.19 +*/
    1.20 +
    1.21 +
    1.22 +/**
    1.23 + @file
    1.24 + @internalTechnology
    1.25 +*/
    1.26 +#include "filecompare.h"
    1.27 +
    1.28 +#include "cryptospi/cryptospidef.h"
    1.29 +#include <e32std.h>
    1.30 +#include <e32def.h>
    1.31 +#include <f32file.h>
    1.32 +
    1.33 +const TInt KCompareBlockSize = 0xff;
    1.34 +
    1.35 +//const TInt KCompareEqual = 0;
    1.36 +const TInt KCompareGreaterThan = 1;
    1.37 +const TInt KCompareLessThan = -1;
    1.38 +
    1.39 +// a simple utility class to compare 2 files, returns
    1.40 +TInt TFileCompare::CompareL(TPtrC aFile1Path, TPtrC aFile2Path)
    1.41 +	{
    1.42 +	// assume is all well, compare always 
    1.43 +	TInt retVal = 0;
    1.44 +
    1.45 +	RFs 	rFs;
    1.46 +	RFile	file1;
    1.47 +	RFile	file2;
    1.48 +
    1.49 +	User::LeaveIfError(rFs.Connect());
    1.50 +	CleanupClosePushL(rFs);
    1.51 +	User::LeaveIfError(file1.Open(rFs, aFile1Path, EFileRead));
    1.52 +	CleanupClosePushL(file1);
    1.53 +	User::LeaveIfError(file2.Open(rFs, aFile2Path, EFileRead));
    1.54 +	CleanupClosePushL(file2);
    1.55 +	
    1.56 +	TInt file1Size;
    1.57 +	file1.Size(file1Size); 
    1.58 +	
    1.59 +	TInt file2Size;
    1.60 +	file2.Size(file2Size);
    1.61 +
    1.62 +	// bail out if the sizes of the 2 files are different
    1.63 +	if(file1Size == file2Size)
    1.64 +		{
    1.65 +				
    1.66 +		TBuf8<KCompareBlockSize> tempBuf1;
    1.67 +		TBuf8<KCompareBlockSize> tempBuf2;
    1.68 +	
    1.69 +		TInt compareBlockSize;
    1.70 +		TInt loopCount;
    1.71 +		
    1.72 +		if(file1Size > KCompareBlockSize)
    1.73 +		{
    1.74 +			compareBlockSize = KCompareBlockSize;
    1.75 +			loopCount = file1Size / compareBlockSize;
    1.76 +		}
    1.77 +		else
    1.78 +		{
    1.79 +			loopCount = 1;
    1.80 +			compareBlockSize = file1Size;
    1.81 +		}
    1.82 +			
    1.83 +	
    1.84 +		// read through the files comparing each block
    1.85 +		for(TInt i = 0; i < loopCount; i++)
    1.86 +			{
    1.87 +			
    1.88 +			file1.Read(tempBuf1, compareBlockSize);
    1.89 +			file2.Read(tempBuf2, compareBlockSize);
    1.90 +			
    1.91 +			// remember, 0 is return value for a successful comparison
    1.92 +			
    1.93 +			retVal = tempBuf1.Compare(tempBuf2);
    1.94 +			if( retVal != 0 )
    1.95 +				{
    1.96 +				//if files fail to match, break out of the loop
    1.97 +				break;
    1.98 +				}		
    1.99 +			}
   1.100 +		}
   1.101 +	else
   1.102 +		{
   1.103 +		if(file1Size > file2Size)
   1.104 +			retVal = KCompareGreaterThan;
   1.105 +		else
   1.106 +			retVal = KCompareLessThan;
   1.107 +		}
   1.108 +
   1.109 +	CleanupStack::PopAndDestroy(&file2);
   1.110 +	CleanupStack::PopAndDestroy(&file1);
   1.111 +	
   1.112 +	CleanupStack::PopAndDestroy(&rFs);
   1.113 +	
   1.114 +	return retVal;		
   1.115 +	}