project64/Source/Common/Log.h

#pragma once
#include "File.h"
#include <stdarg.h>
#include <string>

class CLog
{
public:
    enum LOG_OPEN_MODE
    {
        Log_New,
        Log_Append
    };

    enum
    {
        MB = 1024 * 1024
    };
    enum
    {
        MAX_FILE_SIZE = 10 * MB
    };

    CLog(void);
    ~CLog(void);

    bool Open(const char * FileName, LOG_OPEN_MODE mode = Log_New);
    void Log(const char * Message);
    void LogF(const char * Message, ...);
    void LogArgs(const char * Message, va_list & args);
    bool Empty(void);
    void Close(void);

    inline void SetMaxFileSize(uint32_t Size)
    {
        m_MaxFileSize = Size;
        m_FileChangeSize = (uint32_t)(Size * 0.1);
    }
    inline void SetTruncateFile(bool Truncate)
    {
        m_TruncateFileLog = Truncate;
    }
    inline void SetFlush(bool Always)
    {
        m_FlushOnWrite = Always;
    }
    inline bool IsOpen(void) const
    {
        return m_hLogFile.IsOpen();
    }
    inline bool Flush(void)
    {
        return m_hLogFile.Flush();
    }
    inline const std::string & FileName(void) const
    {
        return m_FileName;
    }

private:
    CLog(const CLog &);
    CLog & operator=(const CLog &);

    CFile m_hLogFile;
    bool m_FlushOnWrite;
    std::string m_FileName;
    bool m_TruncateFileLog;
    uint32_t m_FileSize;
    uint32_t m_MaxFileSize;
    uint32_t m_FileChangeSize;
};