MgaEventLogger.cpp

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// MgaEventLogger.cpp: implementation of the CMgaEventLogger class.
//

#include "stdafx.h"
#include "MgaEventLogger.h"

// Construction/Destruction

CMgaEventLogger::CMgaEventLogger():initialized(false),newLine(true)
{
}

CMgaEventLogger::~CMgaEventLogger()
{

}

STDMETHODIMP CMgaEventLogger::LogEvent(BSTR eventMsg)
{
        if(initialized)
        {
                CString s(eventMsg);
                if(newLine)
                {
                        CTime time = CTime::GetCurrentTime();
                        CString CurrentTime = time.Format(_T("%b %d, %H:%M:%S "));
                        _ftprintf(EventLog,CurrentTime);
                        newLine = false;
                }
                if(s.Find(_T("\r\n"))!=-1)
                {
                        newLine = true;
                }
                _ftprintf(EventLog, _T("%s"), static_cast<const TCHAR*>(s));
                fflush(EventLog);
        }
        return S_OK;
}

STDMETHODIMP CMgaEventLogger::StartLogging()
{
        if(!initialized) //if already initialized, don't do anything
        {
                CString path;
                TCHAR gmepath[MAX_PATH];
                if(SHGetSpecialFolderPath( NULL, gmepath, CSIDL_APPDATA, true)) //most likely C:\Documents and Settings<username>\Application Data
                {
                        path = CString(gmepath) + _T("\\GME"); // add \GME to the path
                        _tmkdir(path.GetBuffer(4)); //in case GME dir not there, make it, if this function fails because GME already exists, don't care
                        CTime time = CTime::GetCurrentTime(); //to make unique logfile names
                        CString CurrentTime = time.Format( _T("\\GME_%b-%d_%H.%M.%S.log") );
                        EventLog = _tfopen(path+CurrentTime,_T("w"));

                        if (EventLog != NULL) //fopen succeded
                        {       
                                initialized = true;
                                newLine = true;
                                CComBSTR b = L"CMgaEventLogger::StartLogging\r\n";
                                LogEvent(b);
                        }
                }
        }
        return S_OK;
}

STDMETHODIMP CMgaEventLogger::StopLogging()
{
        if(initialized)
        {
                CComBSTR b = L"CMgaEventLogger::StopLogging\r\n";
                LogEvent(b);
                fflush(EventLog);
                fclose(EventLog);
        }
        initialized = false;
        EventLog = NULL;
        return S_OK;
}

STDMETHODIMP CMgaEventLogger::EmergencyEvent()
{
        CComBSTR b = L"CMgaEventLogger::EmergencyEvent\r\n";
        LogEvent(b);
        StopLogging();
        return S_OK;
}