sl@0: /*
sl@0: * Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
sl@0: * All rights reserved.
sl@0: * This component and the accompanying materials are made available
sl@0: * under the terms of the License "Eclipse Public License v1.0"
sl@0: * which accompanies this distribution, and is available
sl@0: * at the URL "http://www.eclipse.org/legal/epl-v10.html".
sl@0: *
sl@0: * Initial Contributors:
sl@0: * Nokia Corporation - initial contribution.
sl@0: *
sl@0: * Contributors:
sl@0: *
sl@0: * Description: 
sl@0: * Contains miscellaneous utility functions that can be used by any code in security component
sl@0: *
sl@0: */
sl@0: 
sl@0: 
sl@0: /**
sl@0:  @file
sl@0: */
sl@0: 
sl@0: #include "miscutil.h"
sl@0: 
sl@0: namespace MiscUtil
sl@0: {
sl@0: /*
sl@0:  * Function used to extract lines of text from a buffer. Note that this only works for non-unicode text. It skips
sl@0:  * over blank lines and the characters '\n' or '\r' are treated as end-of-line markers.
sl@0:  *
sl@0:  * @param aBuffer		Input buffer
sl@0:  * @param aPos		Starting index into aBuffer
sl@0:  * @return			ETrue if a line was successfully extracted from the buffer, EFalse if end of buffer reached
sl@0:  */
sl@0: 
sl@0: EXPORT_C TBool ReadNonEmptyLineL(const TDesC8& aBuffer, TInt& aPos, TPtrC8& aLine)
sl@0: 	{
sl@0: 	TBool lineIdentified = ETrue;
sl@0: 	aLine.Set(NULL, 0);
sl@0: 
sl@0: 	TInt bufferLength = aBuffer.Length();
sl@0: 	__ASSERT_ALWAYS(aPos >=0 && aPos <= bufferLength, User::Leave(KErrArgument));
sl@0: 
sl@0: 	// Skip blank lines
sl@0: 	while (aPos < bufferLength)
sl@0: 		{
sl@0: 		TChar  c = aBuffer[aPos];
sl@0: 		if (c != '\r' && c != '\n')
sl@0: 			{
sl@0: 			break;
sl@0: 			}
sl@0: 		aPos++;
sl@0: 		}
sl@0: 
sl@0: 	// Find the position of the next delimter
sl@0: 	TInt endPos = aPos;
sl@0: 	while (endPos < bufferLength)
sl@0: 		{
sl@0: 		TChar c = aBuffer[endPos];
sl@0: 		if (c == '\n' || c == '\r') 	// Find end of line
sl@0: 			{
sl@0: 			break;
sl@0: 			}
sl@0: 		endPos++;
sl@0: 		}
sl@0: 
sl@0: 	if (endPos != aPos)
sl@0: 		{
sl@0: 		TInt tokenLen = endPos - aPos;
sl@0: 		aLine.Set(&aBuffer[aPos], tokenLen);
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		lineIdentified = EFalse; // End of buffer
sl@0: 		}
sl@0: 
sl@0: 	aPos = endPos;
sl@0: 	return lineIdentified;
sl@0: 	}
sl@0: 
sl@0: /*
sl@0:  * Recursively deletes all folders in the path (as long as they are empty)
sl@0:  *
sl@0:  * @param aFs		Connected  filesystem session
sl@0:  * @param aPath		Fully qualified path to start the recursive delete
sl@0:  */
sl@0: EXPORT_C void DeletePathIfEmpty(RFs& aFs, const TDesC& aPath)
sl@0: 	{
sl@0: 	TParse path;
sl@0: 	path.Set(aPath,NULL,NULL);
sl@0: 
sl@0: 	if (path.PathPresent())
sl@0: 		{
sl@0: 		while ((aFs.RmDir(path.DriveAndPath()) == KErrNone) && (path.PopDir() == KErrNone))
sl@0: 			;
sl@0: 		}		
sl@0: 	}
sl@0: 
sl@0: }	// namespace MiscUtil