wutil_log.h

// wutil_log.h
//
// CLog interface - Provides basic logging functionality
//
//
// Copyright (c) 2002-2004 Rob Wiskow
// rob-dev@boxedchaos.com
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//


#ifndef _WUTIL_LOG_H_
#define _WUTIL_LOG_H_

#include <string>
#include <time.h>
#include <list>

namespace wUtil
{



class CLog
{
public:
     struct SLogEntry
     {
          SLogEntry(time_t TimeStamp, unsigned int iSeverity, const std::wstring& sMessage) :
               m_TimeStamp(TimeStamp), m_iSeverity(iSeverity), m_sMessage(sMessage) { }

          SLogEntry(void) : m_TimeStamp(0), m_iSeverity(0) { }

          time_t m_TimeStamp;  
          unsigned int m_iSeverity;  
          std::wstring m_sMessage;  
     };

     typedef std::list<SLogEntry> t_LogList;  

     void AddLogEntry(const std::wstring& sMessage, unsigned int iSeverity, time_t TimeStamp)
          { m_LogList.push_back(SLogEntry(TimeStamp, iSeverity, sMessage)); }

     void AddLogEntry(const std::wstring& sMessage, unsigned int iSeverity = 5)
          { AddLogEntry(sMessage, iSeverity, time(0)); }

     t_LogList GetLogEntries(unsigned int iSeverity = 0) const;

     t_LogList GetLogEntries(unsigned int iHighSeverity, unsigned int iLowSeverity) const;

     void WriteToFile(const std::wstring& sFilename, bool bAppend = true, const std::wstring& sLogHeader = L"") const;

     void Clear(void)
          { m_LogList.clear(); }

protected:
     t_LogList m_LogList;  
};

};


#include "unit_tests/wutil_log_unittests.h"

#endif  // _WUTIL_LOG_H_

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