author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 17 Dec 2009 09:14:51 +0200 | |
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permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2003-2009 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: Log File Handler. |
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* |
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*/ |
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#ifndef __EVENTVIEWER2__ |
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#define __EVENTVIEWER2__ |
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#include <gdi.h> |
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#include <e32base.h> |
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#include <e32std.h> |
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#include <f32file.h> |
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#include <barsc.h> |
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#include <bautils.h> |
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//////////////////////////////////////////////////////// |
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// Literals |
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//////////////////////////////////////////////////////// |
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#include "eventmediatorapi.h" |
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#define LOG_ELEM_TRAILER_LTH 12 |
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#define LOG_ELEM_HEADER_LTH 32 |
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#define KBYTES_TO_BYTES 1024 |
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//efine ELEM_HEADER_LTH 8 |
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#define FILE_BEGIN 0 |
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#define END_MARK_1 0xefbeadde |
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#define END_MARK_2 0xeeabedfe |
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#define LOG_FILE_ID 0x474F4C45 // ELOG |
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|
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///////////////////////////////////////////////////////////////// |
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// Enumeration of log event categories. |
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//////////////////////////////////////////////////////////////// |
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enum TLogCategory2 |
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{ |
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ELogInfo, |
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ELogWarning, |
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ELogError, |
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ELogDebug |
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}; |
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///////////////////////////////////////////////////////// |
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// TEventProperties - data to be returned with the event |
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// text to the caller |
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///////////////////////////////////////////////////////// |
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struct TEventProperties |
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{ |
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TUint32 iSourceComponent; // Uid of source component |
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TTime iTimeStamp; // 64 bit time stamp |
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TLogCategory2 iCategory; // Info, Warning, Error, Debug |
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TUint32 iMsgId; // MsgId in localization file |
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TUint32 iEventNumber; // Event number |
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}; |
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///////////////////////////////////////////////////////// |
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// Packed File Header |
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///////////////////////////////////////////////////////// |
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class TFileHeader |
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{ |
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public: // Methods |
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inline TInt32 GetFileId() const {return ((TInt32)(u.iData32[0]));}; |
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inline TInt32 GetPositionOfNextFree() const {return ((TInt32)(u.iData32[1]));}; |
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inline TInt32 GetPositionOfWrapping() const {return ((TInt32)(u.iData32[2]));}; |
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inline TInt32 GetCurrEventNumber() const {return ((TInt32)(u.iData32[3]));}; |
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private: |
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union |
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{ |
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TUint32 iData32[4]; |
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} u; |
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}; |
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///////////////////////////////////////////////////////// |
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// Unpacked File Header |
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///////////////////////////////////////////////////////// |
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class TUnpackedFileHeader |
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{ |
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public: |
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TUint32 iFileId; // ELOG |
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TUint32 iPositionOfNextFree; |
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TUint32 iPositionOfWrapping; |
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TUint32 iCurrEventNumber; |
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}; |
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///////////////////////////////////////////////////////// |
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// Packed Log Element |
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/////////////////////////////////////////////////////// |
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class TLogElem |
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{ |
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public: // Methods |
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inline TInt32 GetEventLength() const {return ((TInt32)(u.iData32[0]));}; |
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inline TInt32 GetEventNumber() const {return ((TInt32)(u.iData32[1]));}; |
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inline TInt64 GetTimeStamp() const |
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{ |
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return MAKE_TINT64(u.iData32[3], u.iData32[2]);; |
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}; |
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inline TInt32 GetSourceComponent() const {return ((TInt32)(u.iData32[4]));}; |
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inline TLogCategory2 GetCategory() const {return ((TLogCategory2)(u.iData32[5]));}; |
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inline TInt32 GetMsgId() const {return ((TInt32)(u.iData32[6]));}; |
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inline TInt32 GetDescrCount() const {return ((TInt32)(u.iData32[7]));}; |
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|
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private: |
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union |
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{ |
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TUint32 iData32[8]; |
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} u; |
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}; |
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|
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///////////////////////////////////////////////////////// |
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// Unpacked Log Element |
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///////////////////////////////////////////////////////// |
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|
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class TUnpackedLogElem |
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{ |
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public: |
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TUint32 iEventLength; |
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TUint32 iEventNumber; |
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TInt64 iTimeStamp; |
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TUint32 iSourceComponent; |
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TLogCategory2 iCategory; |
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TUint32 iMsgId; |
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TUint32 iDescrCount; |
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}; |
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|
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///////////////////////////////////////////////////////// |
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// Packed Log Element trailer |
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///////////////////////////////////////////////////////// |
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class TLogElemTrailer |
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{ |
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public: // Methods |
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inline TInt32 GetEndMark1() const {return ((TInt32)(u.iData32[0]));}; |
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inline TInt32 GetEndMark2() const {return ((TInt32)(u.iData32[1]));}; |
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inline TInt32 GetEventLength() const {return ((TInt32)(u.iData32[2]));}; |
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|
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private: |
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union |
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{ |
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TUint32 iData32[3]; |
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} u; |
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}; |
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|
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///////////////////////////////////////////////////////// |
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// Unpacked Element trailer |
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///////////////////////////////////////////////////////// |
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|
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class TUnpackedLogElemTrailer |
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{ |
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public: |
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TUint32 iEndMark1; |
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TUint32 iEndMark2; |
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TUint32 iEventLength; |
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}; |
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|
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|
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///////////////////////////////////////////////////////// |
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// EventViewer Class |
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///////////////////////////////////////////////////////// |
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class CEventViewer : public CBase |
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{ |
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|
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|
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// |
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// EventViewer API in EventViewer.cpp |
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// |
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public: |
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IMPORT_C static CEventViewer* NewL(); |
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IMPORT_C ~CEventViewer(); |
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void ConstructL(); |
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|
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IMPORT_C TInt GetMostRecentEvent (HBufC*& aEventText, |
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TEventProperties& aEventProperties); |
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|
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IMPORT_C TInt GetNextEvent (HBufC*& aEventText, |
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TEventProperties& aEventProperties); |
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|
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IMPORT_C TInt GetPreviousEvent (HBufC*& aEventText, |
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TEventProperties& aEventProperties); |
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|
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IMPORT_C TInt GetEventUsingEventNumber( |
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HBufC*& aEventText, |
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TUint32 aEventNumber, |
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TEventProperties& aEventProperties); |
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|
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IMPORT_C TInt GetOldestEvent (HBufC*& aEventText, |
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TEventProperties& aEventProperties); |
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IMPORT_C TInt DeleteLogFile(); |
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// |
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// EventViewer internal functions in EventViewer.cpp |
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// |
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private: |
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TInt GetRequestedEvent( HBufC*& aEventText, |
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TEventProperties& aEventProperties, |
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TUint32 aEventNumber, |
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TInt aMethodId); |
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TInt GetRequestedEventL( HBufC*& aEventText, |
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TEventProperties& aEventProperties, |
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TUint32 aEventNumber, |
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TInt aMethodId); |
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// |
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// EventViewer internal functions in LogFileHandler.cpp |
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// |
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private: |
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TInt OpenLogFile(); |
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void CloseLogFile(); |
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void TakeCopyOfFileHeader(TUnpackedFileHeader& asrc, |
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TUnpackedFileHeader& adest); |
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void OpenResourceFileL(); |
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TInt ReadWholeLogFileToMemoryBuffer(); |
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TInt ReadLogFileHeader(); |
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TInt CopyPackedFileHeaderToUnpackedObject( TDesC8& aFileHeader); |
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TBool IsLogFileModified(); |
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TInt EventLookup(TUint32 aEventNumber); |
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TInt GetStartPositionOfLogElem(TUint32 aEndOfLogElemPosition, |
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TUint32* aLogElemPosition); |
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void CopyPackedLogElemToUnpackedObject(TUint32 iPositionOfCurrLogElem); |
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HBufC* SearchEventTextL( TUint32 aMsgId); |
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HBufC* ModifyEventText(HBufC* aEventTextSrc, |
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TUint32 aDescrCount, // Count of descriptor elements |
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TUint32 aDescrDataPosition); // Descriptors: lth data lth data.... |
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HBufC* FormatEvent(TInt aDescrCount, // Count of lth/data pairs |
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const TDesC8& aDescrList, // lth lth ... data data ... |
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const TDesC& aEventString); // string got from localisation file |
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TInt AnalyseConvSpec( |
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const TDesC& SourceBuf, // |
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TInt& aOffset, // offset of conversion spec element |
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TUint32& aConvType, // U or N (KConvTypex) |
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TUint32& aSeqNumber); // Seq number included to conv spec elem |
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HBufC* GetDescriptorData ( |
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TUint32 aDescrCount, // Count of lth/data pairs |
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const TDesC8& aDescrList, // lth lth ... data data ... |
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TUint32 aConvType, // KConvTypeN or KConvTypeU |
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TUint32 aDescrNumber); // Seq number of lth/data pair |
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TInt BufferAppend(HBufC*& aDestBuf, |
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const TDesC& aString); |
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void DoDeleteLogFileL(); // In LogFileHandler.cpp |
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private: |
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RFs iFS; |
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REventMediator iEventMediator; |
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TUnpackedFileHeader iCurrFileHeader; |
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TUnpackedFileHeader iPreviousFileHeader; |
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TUnpackedLogElem iUnpackedLogElem; |
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TUnpackedLogElemTrailer iLogElemTrailer; |
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TUint32 iRequestedEventNumber; |
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HBufC8* iLogFileBuf; |
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TInt iLogFileSize; |
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TInt iWrappingOccured; |
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TUint32 iPositionOfCurrLogElem; |
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RResourceFile iResourceFile; |
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HBufC* iResultBuf; // Formatted event is build to this buffer |
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// |
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// Current API call parameters |
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// |
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HBufC** iEventText; |
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TEventProperties* iEventProperties; |
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}; |
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#endif |