// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of "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:

// This file implements a logging facility for the loopback.csy.  The loopback

// file created by this log is C:\LOGS\ETEL\LOOPBACK.TXT.

// To turn on logging, create the folder C:\LOGS\ETEL.

// Note that this logging facility uses the Thread Local Storage for a thread.

// 

//

/**

 @file

*/

#include "LOGGER.H"

#ifdef __LOGGER__

#ifdef __EXE__

CETelLogger* ScriptLoggerContext=NULL;

#endif

_LIT(KHayesLogFileName,"C:\\LOGS\\ETEL\\LOOPBACK.TXT");

_LIT(KHayesLogFolder,"C:\\LOGS\\ETEL\\");

const TUint KLogBufferSize=700;

CETelLogger* CETelLogger::NewL()

/**

 * 2 Phase Constructor

 *

 * This method creates an instance of CETelLogger.

 *

 * @leave   Leaves if out-of-memory.

 * @return  pointer to the instance of "CETelLogger".

 */

	{

	CETelLogger* logger=new(ELeave) CETelLogger();

	CleanupStack::PushL(logger);

	logger->ConstructL();

	CleanupStack::Pop();

	return logger;

	}

CETelLogger::CETelLogger() : iValid(EFalse)

/**

 * This method is the constructor for CETelLogger.

 *

 * @param   None.

 * @return	None.

 * @note    Initializes private boolean "iValid" to False.

 */

	{}

void CETelLogger::ConstructL()

/**

 * This method is used to implement the 2 Phase Constructor for CETelLogger.

 * This method sets up the logfile.

 *

 * @leave     Leaves if file can not be created.

 * @note      Logging does not take place if the logging directory has not been created.

 * \note      In debug mode, the logfile is not deleted at start of new session,

 * \note      the logging for each session will be appended to the previous logfile.

 */

	{

	if (FolderExists())

		{

		iFs.Connect();

		TInt ret=KErrNone;

	#if !(defined (_DEBUG))

		ret=iFs.Delete(KHayesLogFileName);

		if(ret==KErrNone || ret==KErrNotFound)

			ret=iFile.Create(iFs,KHayesLogFileName,EFileShareAny|EFileWrite);

	#else

		ret=iFile.Open(iFs,KHayesLogFileName,EFileShareAny|EFileWrite);

		if(ret!=KErrNone)

			ret=iFile.Create(iFs,KHayesLogFileName,EFileShareAny|EFileWrite);

	#endif

		if(ret==KErrNone)

			{

			iValid=ETrue;

			TInt aPos=0;

			iFile.Seek(ESeekEnd,aPos);

			ret=iFile.Write(_L8("----------New Log----------\015\012"));

			}

		}

	}

void CETelLogger::Destruct()

/**

 * This method is used to delete the instantion of CETelLogger.

 *

 * @param   None.

 * @return	None.

 * @note	None.

 */

	{

#ifdef __EXE__

	CETelLogger* context=ScriptLoggerContext;

	delete context;

	ScriptLoggerContext=NULL;

#else

	CETelLogger* context=(CETelLogger*) Dll::Tls();

	delete context;

	Dll::SetTls(NULL);

#endif

	}

CETelLogger::~CETelLogger()

/**

 * This method is the Destructor for the CETelLogger class and as such, closes

 * the logfile.

 *

 * @param   None.

 * @return	None.

 * @note    None.

 */

	{

	if(iValid)

		iFile.Close();

	iFs.Close();

	}

void CETelLogger::WriteL(const TDesC8& aText)

/**

 * This is a static method that is used to write a record of information 

 * into the logfile.  This method is used to place a text string without

 * any variable arguments in the string of input into the logfile.  If an 

 * instance of the CETelLogger class does not exist, this method is used 

 * to create it.  This routine only creates one instance of CETelLogger 

 * for each session. 

 *

 * @param   reference to the text string to be written into the logfile.

 * @leave   Leaves when no memory to create CETelLogger.

 * @note    This is a static method.

 * @note    Logging does not take place if the logging directory does not exist.

 * @note	The logfile is not deleted at start of a new test session, the

 * @note    logging for each test session will be appended in the logfile.

 */

	{

#ifdef __EXE__

	CETelLogger* context=ScriptLoggerContext;

#else

	CETelLogger* context=(CETelLogger*) Dll::Tls();

#endif

	if(context==NULL)

		{

		context=CETelLogger::NewL();

#ifdef __EXE__

		ScriptLoggerContext=context;

#else

		Dll::SetTls(context);

#endif

		}

	if(context->iValid)

		context->WriteRecord(aText);

	}

void CETelLogger::Write(const TText8* aText)

/**

 * Static method used as the entry point to write information into the logfile.

 *

 * @param   pointer to the text string to be written into the logfile.

 * @return	None.

 * @note    This is a static method.

 */

	{

	TPtrC8 text(aText);

	// failure is probably due to OOM - in which case we just don't get logging

	TRAP_IGNORE(WriteL(text));

	}

void CETelLogger::WriteFormat(TRefByValue<const TDesC8> aFmt,...)

/**

 * This is a static method that is used to write a record of information 

 * into the logfile.  This method is used to place a text string with 

 * one or more variable arguments in the string of input into the logfile.

 * If an instance of the CETelLogger class does not exist, this method is 

 * used to create it.  This routine only creates one instance of 

 * CETelLogger for each session. 

 *

 * @param   variable argument list for the text and data in the string

 * @return	None.

 * @note    This is a static method.

 * @note    Logging does not take place if the logging directory does not exist.

 * @note	The logfile is not deleted at start of a new test session, the

 * @note    logging for each test session will be appended in the logfile.

 */

	{

	TBuf8<KLogBufferSize> buf;

    VA_LIST list;

    VA_START(list,aFmt);

    buf.FormatList(aFmt,list);

	TChar tmpchar;

	for(TInt i=0;i<buf.Length();i++)

		{

		tmpchar=buf[i];

		if(!((tmpchar.IsPrint()) || (tmpchar=='\n') || (tmpchar=='\r') || (tmpchar=='\t')))

			buf[i]='.';

		}

#ifdef __EXE__

	CETelLogger* context=ScriptLoggerContext;

#else

	CETelLogger* context=(CETelLogger*) Dll::Tls();

#endif

	if(context==NULL)

		{

		// failure is probably due to OOM - in which case we just don't get logging

		TRAP_IGNORE(context=CETelLogger::NewL());		// trap but ignore leaves

#ifdef __EXE__

		ScriptLoggerContext=context;

#else

		Dll::SetTls(context);

#endif

		}

	if(context->iValid)

		context->WriteRecord(buf);

	}

void CETelLogger::WriteRecord(const TDesC8& aText)

/**

 * This method is used to add date and time information to the text string 

 * and input it as a record into the logfile.

 *

 * @param   reference to the text string to be written into the logfile.

 * @return	None.

 * @note    This is a static method.

 */

	{

	if(iValid)

		{

		TBuf8<KLogBufferSize> buf;

		TTime now;

		now.UniversalTime();

		TDateTime dateTime;

		dateTime = now.DateTime();

		buf.Format(_L8 ("%02d.%02d:%02d:%06d "),dateTime.Hour(),dateTime.Minute(),dateTime.Second(),dateTime.MicroSecond());

		buf.AppendFormat(_L8("%S\015\012"),&aText);

		iFile.Write(buf);

		iFile.Flush();

		}

	}

TBool CETelLogger::FolderExists()

/**

 * This method determines if the folder c:\logs\Etel exists.

 *

 * @param   None.

 * @return	boolean value of ETrue if folder and EFalse if folder does not exist.

 * @note    This is a static method.

 */

	{

	TUint n;

	iFs.Connect();

	TInt ret=iFs.Att(KHayesLogFolder,n);

	iFs.Close();

	if (ret==KErrNone)

		return ETrue;

	return EFalse;

	}

#endif