/*

* Copyright (c) 2010 Ixonos Plc.

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the "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:

* Ixonos Plc

*

* Description:  

*

*/

#ifndef __LOGFILE_H__

#define __LOGFILE_H__

#include <eikapp.h>

#include <e32base.h>

#include <coemain.h>

// Link with the following libraries: EFSRV.LIB HAL.LIB CHARCONV.LIB           

#define LOG_INIT(name) CLogFile *log = CLogFile::NewL(_L(name), ETrue);

#define LOG_INIT2(name) CLogFile *log = CLogFile::NewL(_L(name), EFalse);

#define LOGL(event) \

	log->Log(_L(event));\

	log->LogNewline();

#define LOGNLN(event) \

	log->Log(_L(event));\

#define LOGS(event) \

	log->Log(event);\

	log->LogNewline();

#define LOGN(num) \

	TBuf<64> log_num;\

	log_num.AppendNum(num); \

	log->Log(log_num);\

	log->LogNewline();

#define LOGF(numf) \

	TBuf<16> log_float;\

	log_float.AppendNum(numf, TRealFormat());\

	log->Log(log_float);\

	log->LogNewline();

#define LOGN2(text, num) \

	TBuf<64> log_num;\

	log_num.AppendNum(num);\

	log->Log(_L(text));\

	log->Log(log_num);\

	log->LogNewline();

#define LOGF2(text, numf) \

	TBuf<16> log_float;\

	log_float.AppendNum(numf, TRealFormat());\

	log->Log(_L(text));\

	log->Log(log_float);\

	log->LogNewline();

#define LOG_END \

	delete log;\

	log = 0;

/*! 

  @class CLogFile

  @discussion Class to generate a text file containing logging information

  */

NONSHARABLE_CLASS( CLogFile ) : public CBase

    {

public:

/*!

  @function NewL

  @discussion Create a CLogFile object

  @param aFileName the name of the file to create

  @param aInitialiseLog if true, and the log file already exists, previous

  contents will be deleted. If false, append to any existing contents

  @result a pointer to the created instance of CLogFile

  */

    IMPORT_C static CLogFile* NewL(const TDesC& aFileName, TBool aInitialiseLog);

/*!

  @function NewLC

  @discussion Create a CLogFile object

  @param aFileName the name of the file to create

  @param aInitialiseLog if true, and the log file already exists, previous

  contents will be deleted. If false, append to any existing contents

  @result a pointer to the created instance of CLogFile

  */

    IMPORT_C static CLogFile* NewLC(const TDesC& aFileName, TBool aInitialiseLog);

/*!

  @function ~CLogFile

  @discussion Destroy the object and release all memory objects

  */

    IMPORT_C ~CLogFile();

/*!

  @function Log

  @discussion Append the byte to the log file (if not a printable char, it will be logged as ascii-hex)

  @param aByte the byte to log

  */

    IMPORT_C void Log(TUint8 aByte);

/*!

  @function Log

  @discussion Append the integer to the log file (logged as ascii-hex)

  @param aNumber the integer to log

  */

    IMPORT_C void Log(TUint aNumber);

/*!

  @function Log

  @discussion Append text to the log file

  @param aText the text to log

  */

    IMPORT_C void Log(const TDesC8& aText);

/*!

  @function Log

  @discussion Append text to the log file

  @param aText the text to log

  */

    IMPORT_C void Log(const TDesC& aText);

/*!

  @function LogTime

  @discussion Append a timestamp to the log file.

  Timestamps are in seconds with three decimal places (but resolution is limited to system timer tick period)

  */

    IMPORT_C void LogTime();

/*!

  @function LogBytes

  @discussion Append the bytes to the log file (non-printable bytes will be logged as ascii-hex)

  @param aBuffer the bytes to log

  */

    IMPORT_C void LogBytes(const TDesC8& aBuffer);

/*!

  @function LogNewline

  @discussion Start a newline in the log file

  */

    IMPORT_C void LogNewline();

/*!

  @function SetAutoFlush

  @discussion Turn AutoFlush on or off. AutoFlush will automatically flush the log file after each write

  @param aOn if true turns AutoFlush on

  */

    IMPORT_C void SetAutoFlush(TBool aOn);

/*!

  @function SetAutoTimeStamp

  @discussion Turn AutoTimeStamp on or off. AutoTimeStamp will add a timestamp to the start of each new line in the log

  @param aOn if true turn AutoTimeStamp on

  */

    IMPORT_C void SetAutoTimeStamp(TBool aOn);

/*!

  @function SetAutoNewline

  @discussion Turn AutoNewline on or off. AutoNewline starts a new line after each log operation

  @param aOn if true turn AutoNewline on

  */

    IMPORT_C void SetAutoNewline(TBool aOn);

/*!

  @function StaticLogL

  @discussion Static option to append text to the log file (leaving version)

  @param aFileName the file to append to

  @param aText the text to append

  */

    IMPORT_C static void StaticLogL(const TDesC& aFileName, const TDesC8& aText);

/*!

  @function StaticLogL

  @discussion Static option to append text to the log file (leaving version)

  @param aFileName the file to append to

  @param aText the text to append

  */

    IMPORT_C static void StaticLogL(const TDesC& aFileName, const TDesC& aText);

/*!

  @function StaticLog

  @discussion Static option to append text to the log file (non-leaving version)

  @param aFileName the file to append to

  @param aText the text to append

  */

    IMPORT_C static void StaticLog(const TDesC& aFileName, const TDesC8& aText);

/*!

  @function StaticLog

  @discussion Static option to append text to the log file (non-leaving version)

  @param aFileName the file to append to

  @param aText the text to append

  */

    IMPORT_C static void StaticLog(const TDesC& aFileName, const TDesC& aText);

/*!

  @function FileName

  @discussion Get the file name and path of the file we are writing to

  @param aFileName

  */

    void GetFileName( TDes& aFileName ) const;

private:

/*!

  @function CLogFile

  @discussion Perform the first phase of two phase construction 

  */

    CLogFile();

/*!

  @function ConstructL

  @discussion  Perform the second phase construction of a CLogFile object

  @param aFileName the file to open

  @param aInitialiseLog if true, and the log file already exists, previous

  contents will be deleted. If false, append to any existing contents

  */

    void ConstructL(const TDesC& aFileName, TBool aInitialiseLog);

/*!

  @function LogTimeInternal

  @discussion Internal function to log time

  */

    void LogTimeInternal();

/*!

  @function LogTextInternal

  @discussion Internal function to log text

  @param aText the text to log

  */

    void LogTextInternal(const TDesC8& aText);

/*!

  @function LogByteInternal

  @discussion internal function to log a byte

  @param aByte the byte to log

  */

    void LogByteInternal(TUint8 aByte);

/*!

  @function LogIntInternal

  @discussion Internal function to log an integer

  @param aNumber the integer to log

  */

    void LogIntInternal(TUint aNumber);

/*!

  @function StartWrite

  @discussion Perform any initial operation before the main log operation

  */

    void StartWrite();

/*!

  @function EndWrite

  @discussion Perform any tidying up operations after the main log operation

  */

    void EndWrite();

/*!

  @function Write

  @discussion Do the actual writing, and associated error checking

  @param aText the text to write

  */

    void Write(const TDesC8& aText);

/*!

  @function DoLogTextL

  @discussion Leaving functions from void Log(const TDesC& aText)

  */

    void DoLogTextL(const TDesC& aText);

private:

/*!

  @var iLogFile handle to the log file

  */

    RFile       iLogFile;

/*!

  @var iSession file server session

  */

    RFs         iSession;

/*!

  @var iLogMillisecsPerTick number of millisecs per system timer tick

  */

    TInt        iLogMillisecsPerTick;

/*!

  @var iAutoFlush flag - AutoFlush on

  */

    TBool       iAutoFlush;

/*!

  @var iAutoTimestamp flag - AutoTimeStamp on

  */

    TBool       iAutoTimestamp;

/*!

  @var iAutoNewline flag - AutoNewline on

  */

    TBool       iAutoNewline;

/*!

  @var iCheckNestDepth internal to check StartWrite and EndWrite have been called correctly

  */

    TInt        iCheckNestDepth;

    };

#endif // __LOGFILE_H__