loggingservices/filelogger/INC/FLOGGER.H
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 22 Jan 2010 11:06:30 +0200
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Revision: 201003 Kit: 201003
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// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
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// All rights reserved.
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// This component and the accompanying materials are made available
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// under the terms of "Eclipse Public License v1.0"
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// which accompanies this distribution, and is available
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// at the URL "http://www.eclipse.org/legal/epl-v10.html".
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//
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// Initial Contributors:
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// Nokia Corporation - initial contribution.
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//
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// Contributors:
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//
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// Description:
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// FLogger Client side header
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// 
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//
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/**
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 @file
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 @internalTechnology
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*/
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#ifndef __FLOGGER_H__
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#define __FLOGGER_H__
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#include <e32base.h>
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/** Maximum log buffer size.
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@internalTechnology */
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const TInt KLogBufferSize=150;
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// [All of this start up stuff copied from DBMS]
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class FLogger
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/** Controls the flogger server.
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@internalComponent */
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	{
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public:
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	class TSignal
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/**
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@internalComponent
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*/
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		{
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		friend class FLogger;
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	public:
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		inline TSignal() {}
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		inline TInt Set(const TDesC& aCommand);
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		inline TSignal(TRequestStatus& aStatus);
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		inline TPtrC Command() const;
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	private:
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		TRequestStatus* iStatus;
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		TThreadId iId;
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		};
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public:
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	static TInt Start();
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	IMPORT_C static TInt Run(TSignal& aSignal);
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private:
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	static TInt Init();
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	};
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/** The mode used to write to the log file.
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@internalTechnology */
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enum TFileLoggingMode 
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	{
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	/** Log file mode has not been explicitly set. */
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	EFileLoggingModeUnknown =0,
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	/** Open the log file in append mode. */
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	EFileLoggingModeAppend,
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	/** Open the log file in overwrite mode. */
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	EFileLoggingModeOverwrite,
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	EFileLoggingModeAppendRaw,
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	EFileLoggingModeOverwriteRaw	
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	};
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NONSHARABLE_CLASS(TLogFormatter16Overflow) :public TDes16Overflow
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/** Unicode overflow handler.
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@internalComponent */
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	{
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public:
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	virtual void Overflow(TDes16& aDes);
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	};
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NONSHARABLE_CLASS(TLogFormatter8Overflow) :public TDes8Overflow
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/** Overflow handler.
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@internalComponent */
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	{
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public:
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	virtual void Overflow(TDes8& aDes);
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	};
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class TLogFormatter
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/** Formatting methods for log file data.
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@internalComponent */
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	{
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public:
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	TLogFormatter();
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	void SetDateAndTime(TBool aUseDate,TBool aUseTime);
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	TInt FormatTextToWritableBuffer(TDes8& aBuf, const TDesC16& aText) const;
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	TInt FormatTextToWritableBuffer(TDes8& aBuf, const TDesC8& aText) const;
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	TInt ConvertToWritableBuffer(TDes8& aBuf, TRefByValue<const TDesC16> aFmt, VA_LIST& aList);
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	TInt ConvertToWritableBuffer(TDes8& aBuf, TRefByValue<const TDesC8> aFmt, VA_LIST& aList);
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private:
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	void GetDateAndTimeL(TDes& aDate, TDes& aTime) const;
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	void WriteL(TDes8& aTrg, const TDesC16& aSrc) const;
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	void WriteL(TDes8& aTrg, const TDesC8& aSrc) const;
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private:
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	TBool iUseDate;
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	TBool iUseTime;
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	TLogFormatter16Overflow iOverflow16;
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	TLogFormatter8Overflow iOverflow8;
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	};
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class TLogFile
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/** General access to packaged log files.
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@internalComponent */
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	{
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public:
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	TLogFile();
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	TLogFile(const TDesC& aDir, const TDesC& aName, TFileLoggingMode aMode);
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	TBool operator==(const TLogFile& aLogFile) const;
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	void Set(const TDesC& aDir, const TDesC& aName, TFileLoggingMode aMode);
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	inline TBool Valid() const;
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	inline TFileName Directory() const;
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	inline TFileName Name() const;
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	inline TFileLoggingMode Mode() const;
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	inline void SetValid(TBool aValid);
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private:
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	TBool iValid;
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	TFileName iDirectory;
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	TFileName iName;
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	TFileLoggingMode iMode;
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	};
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#include <flogger.inl>
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class RFileLogger : public RSessionBase
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/** Provides access methods to file logging.
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The file logger API contains both static and non-static versions of access 
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functions to the file logging system. 
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@internalTechnology */
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	{
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public:
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	IMPORT_C RFileLogger();
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	IMPORT_C ~RFileLogger();
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	IMPORT_C TVersion Version() const;
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	IMPORT_C TInt Connect();
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	IMPORT_C void SetDateAndTime(TBool aUseDate,TBool aUseTime);
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	IMPORT_C void CreateLog(const TDesC& aDir, const TDesC& aName, TFileLoggingMode aMode);
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	IMPORT_C void CloseLog();
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	IMPORT_C void Write(const TDesC16& aText);
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	IMPORT_C void WriteFormat(TRefByValue<const TDesC16> aFmt,...);
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	IMPORT_C void WriteFormat(TRefByValue<const TDesC16> aFmt, VA_LIST& aList);
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	IMPORT_C void Write(const TDesC8& aText);
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	IMPORT_C void WriteFormat(TRefByValue<const TDesC8> aFmt,...);
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	IMPORT_C void WriteFormat(TRefByValue<const TDesC8> aFmt, VA_LIST& aList);
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	IMPORT_C void HexDump(const TText* aHeader, const TText* aMargin, const TUint8* aPtr, TInt aLen);
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	IMPORT_C static void Write(const TDesC& aDir, const TDesC& aName, TFileLoggingMode aMode, const TDesC16& aText);
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	IMPORT_C static void WriteFormat(const TDesC& aDir, const TDesC& aName, TFileLoggingMode aMode, TRefByValue<const TDesC16> aFmt,...);
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	IMPORT_C static void WriteFormat(const TDesC& aDir, const TDesC& aName, TFileLoggingMode aMode, TRefByValue<const TDesC16> aFmt, VA_LIST& aList);
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	IMPORT_C static void Write(const TDesC& aDir, const TDesC& aName, TFileLoggingMode aMode, const TDesC8& aText);
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	IMPORT_C static void WriteFormat(const TDesC& aDir, const TDesC& aName, TFileLoggingMode aMode, TRefByValue<const TDesC8> aFmt,...);
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	IMPORT_C static void WriteFormat(const TDesC& aDir, const TDesC& aName, TFileLoggingMode aMode, TRefByValue<const TDesC8> aFmt, VA_LIST& aList);
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	IMPORT_C static void HexDump(const TDesC& aDir, const TDesC& aName, TFileLoggingMode aMode, const TText* aHeader, const TText* aMargin, const TUint8* aPtr, TInt aLen);
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	IMPORT_C TInt LastError() const;
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	IMPORT_C TBool LogValid() const;
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	IMPORT_C TBool LogSTI() const;
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private:
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	TInt DoConnect();
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	void DoWrite(const TDesC8& aBuf);
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	void DoStaticWrite(const TDesC8& aBuf);
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	void DoWriteFormat(TRefByValue<const TDesC16> aFmt, VA_LIST& aList);
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	void DoWriteFormat(TRefByValue<const TDesC8> aFmt, VA_LIST& aList);
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	static void DoStaticWriteFormat(const TDesC& aDir, const TDesC& aName, TFileLoggingMode aMode, TRefByValue<const TDesC16> aFmt, VA_LIST& aList);
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	static void DoStaticWriteFormat(const TDesC& aDir, const TDesC& aName, TFileLoggingMode aMode, TRefByValue<const TDesC8> aFmt, VA_LIST& aList);
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	void DoHexDump(const TText* aHeader, const TText* aMargin, const TUint8* aPtr, TInt aLen);
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private:
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	TLogFormatter iFormatter;
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	TLogFile iLogFile;
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	TInt iLastError;
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	TBool iLogSTI;	/* CR1688  	Flogger to use RDebug::Print */
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	};
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#endif