sl@0: /*
sl@0: * Copyright (c) 2005-2009 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 "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: *
sl@0: */
sl@0: 
sl@0: #include "T_ActiveCallbackIO.h"
sl@0: 
sl@0: /*@{*/
sl@0: _LIT(KStrNull,								" ");
sl@0: 
sl@0: _LIT(KLogErrorFileNotFound,					"File '%S' Not Found. Error %d");
sl@0: _LIT(KLogErrorFileNotOpened,				"File '%S' Not Opened. Error %d");
sl@0: _LIT(KLogErrorFormatError,					"Format Error");
sl@0: /*@}*/
sl@0: 
sl@0: CT_ActiveCallbackIO* CT_ActiveCallbackIO::NewL(CDataWrapperBase& aCallback, TInt aPriority)
sl@0: 	{
sl@0: 	CT_ActiveCallbackIO*	self=new(ELeave) CT_ActiveCallbackIO(aCallback, aPriority);
sl@0: 	CleanupStack::PushL(self);
sl@0: 	self->ConstructL();
sl@0: 	CleanupStack::Pop();
sl@0: 	return self;
sl@0: 	}
sl@0: 
sl@0: CT_ActiveCallbackIO::~CT_ActiveCallbackIO()
sl@0: 	{
sl@0: 	delete iBuffer;
sl@0: 	iBuffer=NULL;
sl@0: 	}
sl@0: 
sl@0: CT_ActiveCallbackIO::CT_ActiveCallbackIO(CDataWrapperBase& aCallback, TInt aPriority)
sl@0: :	CActiveCallbackBase(aCallback, aPriority)
sl@0: ,	iBuffer(NULL)
sl@0: 	{
sl@0: 	}
sl@0: 
sl@0: 
sl@0: TInt CT_ActiveCallbackIO::BufferLength()
sl@0: 	{
sl@0: 	return iBuffer->Length();
sl@0: 	}
sl@0: 
sl@0: const TDesC8& CT_ActiveCallbackIO::Buffer()
sl@0: 	{
sl@0: 	return *iBuffer;
sl@0: 	}
sl@0: 
sl@0: void CT_ActiveCallbackIO::PrepareFromStringL(TInt aRepeat, const TDesC& aString)
sl@0: 	{
sl@0: 	delete iBuffer;
sl@0: 	iBuffer=NULL;
sl@0: 
sl@0: 	TInt	bufferLength=aString.Length()*aRepeat;
sl@0: 	iBuffer=HBufC8::NewL(bufferLength);
sl@0: 	iBuffer->Des().Copy(aString);
sl@0: 	ConvertAndRepeatBuffer(aRepeat);
sl@0: 	}
sl@0: 
sl@0: void CT_ActiveCallbackIO::PrepareFromFileL(TInt aRepeat, const TDesC& aFilename)
sl@0: 	{
sl@0: 	delete iBuffer;
sl@0: 	iBuffer=NULL;
sl@0: 
sl@0: 	TFindFile	findFile(iDataWrapperBase.FileServer());
sl@0: 	TInt		err=findFile.FindByDir(aFilename, KStrNull);
sl@0: 	if ( err!=KErrNone )
sl@0: 		{
sl@0: 		iDataWrapperBase.ERR_PRINTF3(KLogErrorFileNotFound, &aFilename, err);
sl@0: 		iDataWrapperBase.SetBlockResult(EFail);
sl@0: 		}
sl@0: 	else
sl@0: 		{
sl@0: 		const TDesC&	fileName=findFile.File();
sl@0: 		RFile			file;
sl@0: 		err=file.Open(iDataWrapperBase.FileServer(), fileName, EFileRead|EFileShareAny);
sl@0: 		if ( err!=KErrNone )
sl@0: 			{
sl@0: 			iDataWrapperBase.ERR_PRINTF3(KLogErrorFileNotOpened, &aFilename, err);
sl@0: 			iDataWrapperBase.SetBlockResult(EFail);
sl@0: 			}
sl@0: 		else
sl@0: 			{
sl@0: 			CleanupClosePushL(file);
sl@0: 			iDataWrapperBase.INFO_PRINTF1(_L("File Opened."));
sl@0: 
sl@0: 			// get size
sl@0: 			TInt	bufferLength;
sl@0: 			User::LeaveIfError(file.Size(bufferLength));
sl@0: 			bufferLength*=aRepeat;
sl@0: 			iDataWrapperBase.INFO_PRINTF2(_L("File Size=%d."), bufferLength);
sl@0: 
sl@0: 			// read file
sl@0: 			iBuffer=HBufC8::NewL(bufferLength);
sl@0: 			iDataWrapperBase.INFO_PRINTF1(_L("Buffer created."));
sl@0: 
sl@0: 			TPtr8	fileData = iBuffer->Des();
sl@0: 			User::LeaveIfError(file.Read(fileData));
sl@0: 			CleanupStack::PopAndDestroy(&file);
sl@0: 
sl@0: 			ConvertAndRepeatBuffer(aRepeat);
sl@0: 			}
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: void CT_ActiveCallbackIO::ConvertAndRepeatBuffer(TInt aRepeat)
sl@0: 	{
sl@0: 	ConvertEscapeChars(iBuffer->Des());
sl@0: 
sl@0: 	TPtr8	ptr=iBuffer->Des();
sl@0: 
sl@0: 	for ( TInt index=1; index<aRepeat; ++index )
sl@0: 		{
sl@0: 		iBuffer->Des().Append(ptr);
sl@0: 		}
sl@0: 	}
sl@0: 
sl@0: void CT_ActiveCallbackIO::ConvertEscapeChars(TPtr8 aBuffer)
sl@0: 	{
sl@0: 	TInt	ret=KErrNone;
sl@0: 	TInt	length=aBuffer.Length();
sl@0: 	TInt	position=0;
sl@0: 	TBool	escapeFound=EFalse;
sl@0: 
sl@0: 	for ( TInt index=0; index<length; ++index )
sl@0: 		{
sl@0: 		TChar	nextChar=aBuffer[index];
sl@0: 		if ( escapeFound )
sl@0: 			{
sl@0: 			switch ( nextChar )
sl@0: 				{
sl@0: 			case 'x':
sl@0: 				{
sl@0: 				//	Check that we have a further 2 characters
sl@0: 				if ( (index+2)<length )
sl@0: 					{
sl@0: 					++index;
sl@0: 					TUint charCode = 0;
sl@0: 					TLex8 lex(aBuffer.Mid(index,2));
sl@0: 					ret = lex.Val(charCode ,EHex);
sl@0: 					aBuffer[position++]=TChar(charCode);
sl@0: 					++index;
sl@0: 					nextChar = aBuffer[index];
sl@0: 					}
sl@0: 				else
sl@0: 					{
sl@0: 					ret=KErrArgument;
sl@0: 					}
sl@0: 				escapeFound=EFalse;
sl@0: 				}
sl@0: 				break;
sl@0: 			case 'n':
sl@0: 				//	\n found newline
sl@0: 				{
sl@0: 				aBuffer[position++]='\n';
sl@0: 				escapeFound=EFalse;
sl@0: 				}
sl@0: 				break;
sl@0: 			case 't':
sl@0: 				//	\t found horizontal tab
sl@0: 				{
sl@0: 				aBuffer[position++]='\t';
sl@0: 				escapeFound=EFalse;
sl@0: 				}
sl@0: 				break;
sl@0: 			case 'v':
sl@0: 				//	\v found vertical tab
sl@0: 				{
sl@0: 				aBuffer[position++]='\v';
sl@0: 				escapeFound=EFalse;
sl@0: 				}
sl@0: 				break;
sl@0: 			case 'b':
sl@0: 				//	\b found backspace
sl@0: 				{
sl@0: 				aBuffer[position++]='\b';
sl@0: 				escapeFound=EFalse;
sl@0: 				}
sl@0: 				break;
sl@0: 			case 'r':
sl@0: 				//	\r found carriage return
sl@0: 				{
sl@0: 				aBuffer[position++]='\r';
sl@0: 				escapeFound=EFalse;
sl@0: 				}
sl@0: 				break;
sl@0: 			case 'f':
sl@0: 				//	\f found form feed
sl@0: 				{
sl@0: 				aBuffer[position++]='\f';
sl@0: 				escapeFound=EFalse;
sl@0: 				}
sl@0: 				break;
sl@0: 			case 'a':
sl@0: 				//	\a found audible alert (bell)
sl@0: 				{
sl@0: 				aBuffer[position++]='\a';
sl@0: 				escapeFound=EFalse;
sl@0: 				}
sl@0: 				break;
sl@0: 			default:
sl@0: 				aBuffer[position++]=nextChar;
sl@0: 				escapeFound=EFalse;
sl@0: 				break;
sl@0: 				}
sl@0: 			}
sl@0: 		else
sl@0: 			{
sl@0: 			if ( aBuffer[index]=='\\' )
sl@0: 				{
sl@0: 				escapeFound=ETrue;
sl@0: 				}
sl@0: 			else
sl@0: 				{
sl@0: 				aBuffer[position++]=aBuffer[index];
sl@0: 				}
sl@0: 			}
sl@0: 		}
sl@0: 
sl@0: 	if ( ret!=KErrNone )
sl@0: 		{
sl@0: 		iDataWrapperBase.ERR_PRINTF1(KLogErrorFormatError);
sl@0: 		iDataWrapperBase.SetBlockResult(EFail);
sl@0: 		}
sl@0: 
sl@0: 	aBuffer.SetLength(position);
sl@0: 	}