Log.h

[詳解]

// ----------------------------------------------------------------------------
 
#pragma once
 
#include "File.h"
#include "FileUtility.h"
#include "TString.h"
#include "CriticalSection.h"
 
namespace alt
{
    enum class LogLevel
    {
        Fatal,
        Error,
        Warn,
        Info,
        Debug,
        Trace
    };
 
    class DLL_DECLSPEC Log : public WindowsLibrary
    {
    public:
        APIENTRY Log ();
 
        APIENTRY Log (
            LogLevel logLevel, LPCTSTR fileName, SHORT sRotation,
            DWORD dwFileSize);
 
        APIENTRY ~Log ();
 
        BOOL APIENTRY Init (
            LogLevel logLevel, LPCTSTR fileName, SHORT sRotation,
            DWORD dwFileSize);
 
        VOID APIENTRY Fatal (LPCTSTR message, DWORD dwThreadID = GetCurrentThreadId ());
 
        VOID APIENTRY Error (LPCTSTR message, DWORD dwThreadID = GetCurrentThreadId ());
 
        VOID APIENTRY Warn (LPCTSTR message, DWORD dwThreadID = GetCurrentThreadId ());
 
        VOID APIENTRY Info (LPCTSTR message, DWORD dwThreadID = GetCurrentThreadId ());
 
        VOID APIENTRY Debug (LPCTSTR message, DWORD dwThreadID = GetCurrentThreadId ());
 
        VOID APIENTRY Trace (LPCTSTR message, DWORD dwThreadID = GetCurrentThreadId ());
 
    protected:
        BOOL APIENTRY AppendLog ();
        BOOL APIENTRY CreateLog ();
        BOOL APIENTRY OpenLog ();
        VOID APIENTRY FindHistory ();
        VOID APIENTRY RotateLogFile ();
        LPCTSTR APIENTRY GetLogLevelString (LogLevel logLevel);
 
    private:
        VOID APIENTRY LogWrite (
            LogLevel logLevel, LPCTSTR pctszMessage, DWORD dwThreadID);
 
        File _file;                 
        LogLevel _level;            
        TString _baseFileName;      
        TString _logFileName;       
        SYSTEMTIME _localTime;      
        DWORD _dwCurrentWriteSize;  
        SHORT _sFileCount;          
        SHORT _sRotation;           
        DWORD _dwFileSize;          
        CriticalSection _lock;      
        LPCTSTR _format = _T ("%04d/%02d/%02d %02d:%02d:%02d.%03d %5d %5s %s\r\n");
 
        LPCTSTR _lpctszExtension = _T (".log");
        LPCTSTR _lpctszLogFileName = _T ("%s.log");
        LPCTSTR _lpctszSearchKeyword = _T ("??.log");
        LPCTSTR _lpctszRotationFileName = _T ("%s%02d.log");
 
        LPCTSTR _lpctszLogLevelFatal = _T ("Fatal");
        LPCTSTR _lpctszLogLevelError = _T ("Error");
        LPCTSTR _lpctszLogLevelWarn = _T ("Warn ");
        LPCTSTR _lpctszLogLevelInfo = _T ("Info ");
        LPCTSTR _lpctszLoglevelDebug = _T ("Debug");
        LPCTSTR _lpctszLogLevelTrace = _T ("Trace");
    };
}