third-party libs
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Benjamin Palko
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332
third-party/BugTrap-1.3-57bd515/source/XmlLogFile.cpp
vendored
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332
third-party/BugTrap-1.3-57bd515/source/XmlLogFile.cpp
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/*
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* This is a part of the BugTrap package.
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* Copyright (c) 2005-2009 IntelleSoft.
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* All rights reserved.
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*
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* Description: XML log file.
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* Author: Maksim Pyatkovskiy.
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*
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* This source code is only intended as a supplement to the
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* BugTrap package reference and related electronic documentation
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* provided with the product. See these sources for detailed
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* information regarding the BugTrap package.
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*/
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#include "StdAfx.h"
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#include "XmlLogFile.h"
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#include "FileStream.h"
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#include "XmlReader.h"
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#include "XmlWriter.h"
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#ifdef _DEBUG
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#define new DEBUG_NEW
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#endif
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CXmlLogFile::CStrLogRecord::CStrLogRecord(void) :
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m_strLogLevel(8),
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m_strTimeStatistics(32),
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m_strEntryText(1024)
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{
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}
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void CXmlLogFile::CStrLogRecord::Reset(void)
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{
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m_strLogLevel.Reset();
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m_strTimeStatistics.Reset();
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m_strEntryText.Reset();
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}
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void CXmlLogFile::CPtrLogRecord::Reset(void)
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{
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m_pszLogLevel = _T("");
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m_pszTimeStatistics = _T("");
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m_pszEntryText = _T("");
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}
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/**
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* @return true if the log was loaded successfully.
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*/
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BOOL CXmlLogFile::LoadEntries(void)
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{
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#ifdef _DEBUG
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DWORD dwStartTime = GetTickCount();
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#endif
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BOOL bResult = FALSE;
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PCTSTR pszLogFileName = GetLogFileName();
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CFileStream FileStream;
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if (FileStream.Open(pszLogFileName, OPEN_EXISTING, GENERIC_READ, FILE_SHARE_READ))
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{
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size_t nFileSize = FileStream.GetLength();
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if (nFileSize == 0)
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{
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// ignore empty files
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return TRUE;
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}
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CXmlReader XmlReader(&FileStream);
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CXmlReader::CXmlNode XmlNode;
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int iResult = XmlReader.GotoNextElement(_T("log"), XmlNode, CXmlReader::XGF_ALLOW_ELEMENT_END);
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if (iResult < 0)
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goto end;
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if (iResult > 0 && XmlNode.GetNodeType() == CXmlReader::CXmlNode::XNT_ELEMENT_BEGIN)
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{
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CStrLogRecord LogRecord;
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for (;;)
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{
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iResult = XmlReader.GotoNextElement(_T("entry"), XmlNode, CXmlReader::XGF_ALLOW_ELEMENT_END);
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if (iResult <= 0)
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goto end;
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if (XmlNode.GetNodeType() == CXmlReader::CXmlNode::XNT_ELEMENT_END)
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break;
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_ASSERTE(XmlNode.GetNodeType() == CXmlReader::CXmlNode::XNT_ELEMENT_BEGIN);
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LogRecord.Reset();
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iResult = XmlReader.GotoNextElement(_T("level"), XmlNode, 0);
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if (iResult <= 0)
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goto end;
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_ASSERTE(
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XmlNode.GetNodeType() == CXmlReader::CXmlNode::XNT_ELEMENT_BEGIN ||
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XmlNode.GetNodeType() == CXmlReader::CXmlNode::XNT_ELEMENT);
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// enforce constraint: log level is required field
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if (XmlNode.GetNodeType() != CXmlReader::CXmlNode::XNT_ELEMENT_BEGIN)
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goto end;
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iResult = XmlReader.GotoText(XmlNode, 0);
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if (iResult <= 0)
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goto end;
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_ASSERTE(XmlNode.GetNodeType() == CXmlReader::CXmlNode::XNT_TEXT);
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LogRecord.SetLogLevel(XmlNode.GetNodeValue());
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iResult = XmlReader.GotoNextElementEnd(XmlNode, 0);
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if (iResult <= 0)
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goto end;
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iResult = XmlReader.GotoNextElement(_T("time"), XmlNode, 0);
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if (iResult <= 0)
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goto end;
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_ASSERTE(
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XmlNode.GetNodeType() == CXmlReader::CXmlNode::XNT_ELEMENT_BEGIN ||
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XmlNode.GetNodeType() == CXmlReader::CXmlNode::XNT_ELEMENT);
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// enforce constraint: time statistics is required field
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if (XmlNode.GetNodeType() != CXmlReader::CXmlNode::XNT_ELEMENT_BEGIN)
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goto end;
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iResult = XmlReader.GotoText(XmlNode, 0);
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if (iResult <= 0)
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goto end;
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_ASSERTE(XmlNode.GetNodeType() == CXmlReader::CXmlNode::XNT_TEXT);
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LogRecord.SetTimeStatistics(XmlNode.GetNodeValue());
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iResult = XmlReader.GotoNextElementEnd(XmlNode, 0);
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if (iResult <= 0)
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goto end;
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iResult = XmlReader.GotoNextElement(_T("text"), XmlNode, 0);
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if (iResult <= 0)
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goto end;
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_ASSERTE(
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XmlNode.GetNodeType() == CXmlReader::CXmlNode::XNT_ELEMENT_BEGIN ||
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XmlNode.GetNodeType() == CXmlReader::CXmlNode::XNT_ELEMENT);
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// entry text is optional field
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if (XmlNode.GetNodeType() == CXmlReader::CXmlNode::XNT_ELEMENT_BEGIN)
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{
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iResult = XmlReader.GotoText(XmlNode, CXmlReader::XGF_ALLOW_ELEMENT_END);
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if (iResult <= 0)
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goto end;
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_ASSERTE(
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XmlNode.GetNodeType() == CXmlReader::CXmlNode::XNT_TEXT ||
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XmlNode.GetNodeType() == CXmlReader::CXmlNode::XNT_ELEMENT_END);
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if (XmlNode.GetNodeType() == CXmlReader::CXmlNode::XNT_TEXT)
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{
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LogRecord.SetEntryText(XmlNode.GetNodeValue());
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iResult = XmlReader.GotoNextElementEnd(XmlNode, 0);
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if (iResult <= 0)
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goto end;
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}
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}
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if (! AddToTail(LogRecord))
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goto end;
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iResult = XmlReader.GotoNextElementEnd(XmlNode, 0);
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if (iResult <= 0)
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goto end;
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}
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}
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bResult = TRUE;
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end:
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if (! bResult)
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FreeEntries();
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}
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else
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{
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DWORD dwLastError = FileStream.GetLastError();
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if (dwLastError == ERROR_FILE_NOT_FOUND ||
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dwLastError == ERROR_PATH_NOT_FOUND ||
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GetFileAttributes(pszLogFileName) == INVALID_FILE_ATTRIBUTES)
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{
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bResult = TRUE; // ignore missing files
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}
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}
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#ifdef _DEBUG
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DWORD dwEndTime = GetTickCount();
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TCHAR szMessage[128];
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_stprintf_s(szMessage, countof(szMessage), _T("CXmlLogFile::LoadEntries(): %lu entries, %lu bytes, %lu milliseconds\r\n"), GetNumEntries(), GetNumBytes(), dwEndTime - dwStartTime);
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OutputDebugString(szMessage);
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#endif
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return bResult;
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}
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/**
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* @param bCrash - true if crash has occurred.
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* @return true if the log was saved successfully.
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*/
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BOOL CXmlLogFile::SaveEntries(BOOL /*bCrash*/)
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{
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#ifdef _DEBUG
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DWORD dwStartTime = GetTickCount();
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#endif
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PCTSTR pszLogFileName = GetLogFileName();
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CFileStream FileStream(1024);
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if (! FileStream.Open(pszLogFileName, CREATE_ALWAYS, GENERIC_WRITE))
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return FALSE;
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CXmlWriter XmlWriter(&FileStream);
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XmlWriter.SetIndentation(_T(' '), 2);
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XmlWriter.WriteStartDocument();
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XmlWriter.WriteStartElement(_T("log")); // <log>
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CLogEntry* pLogEntry = GetFirstEntry();
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while (pLogEntry)
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{
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CXmlLogEntry* pXmlLogEntry = (CXmlLogEntry*)pLogEntry;
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PTCHAR pchPointer = pXmlLogEntry->m_pchData;
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_ASSERTE(pchPointer != NULL);
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PCTSTR pszLogLevel = pchPointer;
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pchPointer += _tcslen(pchPointer) + 1;
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PCTSTR pszTimeStatistics = pchPointer;
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pchPointer += _tcslen(pchPointer) + 1;
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PCTSTR pszEntry = pchPointer;
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//pchPointer += _tcslen(pchPointer) + 1;
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XmlWriter.WriteStartElement(_T("entry")); // <entry>
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XmlWriter.WriteElementString(_T("level"), pszLogLevel); // <level>...</level>
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XmlWriter.WriteElementString(_T("time"), pszTimeStatistics); // <time>...</time>
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XmlWriter.WriteElementString(_T("text"), pszEntry); // <text>...</text>
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XmlWriter.WriteEndElement(); // </entry>
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pLogEntry = pLogEntry->m_pNextEntry;
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}
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XmlWriter.WriteEndElement(); // </log>
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XmlWriter.WriteEndDocument();
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#ifdef _DEBUG
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DWORD dwEndTime = GetTickCount();
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TCHAR szMessage[128];
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_stprintf_s(szMessage, countof(szMessage), _T("CXmlLogFile::SaveEntries(): %lu entries, %lu bytes, %lu milliseconds\r\n"), GetNumEntries(), GetNumBytes(), dwEndTime - dwStartTime);
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OutputDebugString(szMessage);
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#endif
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return TRUE;
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}
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/**
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* @param rLogRecord - reference the log record.
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* @return pointer to the new entry.
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*/
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CXmlLogFile::CXmlLogEntry* CXmlLogFile::AllocLogEntry(const CBaseLogRecord& rLogRecord)
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{
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PCTSTR pszLogLevel = rLogRecord.GetLogLevel();
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DWORD dwLogLevelSize = rLogRecord.GetLogLevelLength() + 1;
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PCTSTR pszTimeStatistics = rLogRecord.GetTimeStatistics();
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DWORD dwTimeStatisticsSize = rLogRecord.GetTimeStatisticsLength() + 1;
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PCTSTR pszEntryText = rLogRecord.GetEntryText();
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DWORD dwEntryTextSize = rLogRecord.GetEntryTextLength() + 1;
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DWORD dwLogRecordSize = dwLogLevelSize + dwTimeStatisticsSize + dwEntryTextSize + 1;
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CXmlLogEntry* pLogEntry = (CXmlLogEntry*)new BYTE[sizeof(CXmlLogEntry) + dwLogRecordSize * sizeof(TCHAR)];
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if (pLogEntry)
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{
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PTCHAR pchPointer = pLogEntry->m_pchData;
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_ASSERTE(pchPointer != NULL);
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_tcscpy_s(pchPointer, dwLogLevelSize, pszLogLevel);
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pchPointer += dwLogLevelSize;
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dwLogLevelSize = (DWORD)GetStringSizeInUTF8(pszLogLevel);
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_tcscpy_s(pchPointer, dwTimeStatisticsSize, pszTimeStatistics);
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pchPointer += dwTimeStatisticsSize;
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dwTimeStatisticsSize = (DWORD)GetStringSizeInUTF8(pszTimeStatistics);
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_tcscpy_s(pchPointer, dwEntryTextSize, pszEntryText);
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pchPointer += dwEntryTextSize;
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dwEntryTextSize = (DWORD)GetStringSizeInUTF8(pszEntryText);
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*pchPointer = _T('\0');
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pLogEntry->m_dwSize = dwLogLevelSize + dwTimeStatisticsSize + dwEntryTextSize +
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sizeof(" <entry>\r\n"
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" <level></level>\r\n"
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" <time></time>\r\n"
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" <text></text>\r\n"
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" </entry>\r\n") - 1;
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}
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return pLogEntry;
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}
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/**
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* @param rLogRecord - reference the log record.
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* @return true if entry was added.
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*/
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BOOL CXmlLogFile::AddToHead(const CBaseLogRecord& rLogRecord)
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{
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CXmlLogEntry* pLogEntry = AllocLogEntry(rLogRecord);
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if (pLogEntry)
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{
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CInMemLogFile::AddToHead(pLogEntry);
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return TRUE;
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}
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else
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return FALSE;
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}
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/**
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* @param rLogRecord - reference the log record.
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* @return true if entry was added.
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*/
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BOOL CXmlLogFile::AddToTail(const CBaseLogRecord& rLogRecord)
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{
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CXmlLogEntry* pLogEntry = AllocLogEntry(rLogRecord);
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if (pLogEntry)
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{
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CInMemLogFile::AddToTail(pLogEntry);
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return TRUE;
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}
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else
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return FALSE;
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}
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/**
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* @param eLogLevel - log level number.
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* @param eEntryMode - entry mode.
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* @param rcsConsoleAccess - provides synchronous access to the console.
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* @param pszEntry - log entry text.
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* @return true if operation was completed successfully.
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*/
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BOOL CXmlLogFile::WriteLogEntry(BUGTRAP_LOGLEVEL eLogLevel, ENTRY_MODE eEntryMode, CRITICAL_SECTION& rcsConsoleAccess, PCTSTR pszEntry)
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{
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BOOL bResult = TRUE;
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BUGTRAP_LOGLEVEL eLogFileLevel = GetLogLevel();
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if (eLogLevel <= eLogFileLevel)
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{
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SYSTEMTIME st;
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GetLocalTime(&st);
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WriteLogEntryToConsole(eLogLevel, &st, rcsConsoleAccess, pszEntry);
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PCTSTR pszLogLevelPrefix = GetLogLevelPrefix(eLogLevel);
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TCHAR szTimeStatistics[32];
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GetTimeStatistics(&st, szTimeStatistics, countof(szTimeStatistics));
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CPtrLogRecord LogRecord;
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LogRecord.SetLogLevel(pszLogLevelPrefix);
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LogRecord.SetTimeStatistics(szTimeStatistics);
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LogRecord.SetEntryText(pszEntry);
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switch (eEntryMode)
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{
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case EM_APPEND:
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AddToTail(LogRecord);
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break;
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case EM_INSERT:
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AddToHead(LogRecord);
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break;
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default:
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_ASSERT(FALSE);
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bResult = FALSE;
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}
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}
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return bResult;
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}
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