CWE-ou-minkata/Sources/Plasma/PubUtilLib/plStatusLog/plStatusLog.h

/*==LICENSE==*

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*==LICENSE==*/
//////////////////////////////////////////////////////////////////////////////
//                                                                          //
//  plStatusLog Header                                                      //
//                                                                          //
//// Description /////////////////////////////////////////////////////////////
//                                                                          //
//  plStatusLogs are our new encapsulated method of outputting text logs    //
//  for status (or other things, like, say, errors). They do more than just //
//  output to the file, though; they maintain a scrolling buffer that       //
//  can be drawn on to the screen so you can actually view what's being     //
//  outputted to the log file (you can disable file writing if you wish).   //
//                                                                          //
//////////////////////////////////////////////////////////////////////////////

#ifndef _plStatusLog_h
#define _plStatusLog_h

#include "HeadSpin.h"
#include "hsThread.h"
#include "plFileSystem.h"

#include <string>

class plPipeline;

//// plStatusLog Definition //////////////////////////////////////////////////
//  Currently, they all display in the same location, so only one should 
//  really be visible at any given time.

class plStatusLogMgr;
class plStatusLogDrawerStub;
class plStatusLog
{
    friend class plStatusLogMgr;
    friend class plStatusLogDrawerStub;
    friend class plStatusLogDrawer;
    
    protected:


        mutable uint32_t      fFlags;     // Mutable so we can change it in IPrintLineToFile() internally
        uint32_t  fOrigFlags;

        uint32_t     fMaxNumLines;
        plFileName   fFilename;
        char**       fLines;
        uint32_t*    fColors;
        hsGlobalSemaphore* fSema;
        FILE*        fFileHandle;
        uint32_t     fSize;
        bool         fForceLog;

        plStatusLog *fNext, **fBack;

        plStatusLog **fDisplayPointer;      // Inside pfConsole
        
        void    IUnlink( void );
        void    ILink( plStatusLog **back );

        bool    IAddLine( const char *line, int32_t count, uint32_t color );
        bool    IPrintLineToFile( const char *line, uint32_t count );
        void    IParseFileName(plFileName &fileNoExt, plString &ext) const;

        void    IInit( void );
        void    IFini( void );
        bool    IReOpen( void );

        plStatusLog( uint8_t numDisplayLines, const plFileName &filename, uint32_t flags );

    public:

        static uint32_t fLoggingOff;
        enum StatusFlagType
        {
            kFilledBackground   = 0x00000001,
            kAppendToLast       = 0x00000002,
            kDontWriteFile      = 0x00000004,
            kDeleteForMe        = 0x00000008,   // BE CAREFUL USING THIS!!
                                                // kDeleteForMe instructs the statusLogMgr to delete
                                                // this log itself when it destructs, which is at the
                                                // very end of client shutdown (the manager is static).
                                                // Because of this, it's safe to use this so long as you'll
                                                // never reference it at the very end of shutdown (as an
                                                // object is deleted by the resManager, for example, is
                                                // okay because that's done in plClient::Shutdown(), not 
                                                // at the very end of app destruction). If you use this
                                                // and your log is deleted before you, your pointer will
                                                // NOT reflect this; it's up to you 
            kAlignToTop         = 0x00000010,
            kDebugOutput        = 0x00000020,   // Also write string to debug console
            kTimestamp          = 0x00000040,   // Write a timestamp in Local time with each entry.
            kStdout             = 0x00000080,   // Also write string to stdout
            kTimeInSeconds      = 0x00000100,   // Write timestamp as seconds since epoch
            kTimeAsDouble       = 0x00000200,   // Write timestamp as seconds.millis
            kDontRotateLogs     = 0x00000400,   // Don't rename/renumber log fileName
            kServerTimestamp    = 0x00000800,   // Timestamp each entry with the server's time
            kRawTimeStamp       = 0x00001000,   // hsTimer::GetSeconds()
            kThreadID           = 0x00002000,   // ID of current thread
            kTimestampGMT       = 0x00004000,   // Write a timestamp in GMT with each entry.
            kNonFlushedLog      = 0x00008000,   // Do not flush the log after each write
        };

        enum 
        {
            kRed    = 0xffff0000,
            kGreen  = 0xff00ff00,
            kBlue   = 0xff0000ff,
            kYellow = 0xffffff00,
            kWhite  = 0xffffffff
        };

        enum
        {
            kMaxFileSize    = 300000000,    // 300 megs
        };

        ~plStatusLog();

        bool    AddLine( const char *line, uint32_t color = kWhite );

        /// printf-like functions

        bool    AddLineF( const char *format, ... );
        bool    AddLineF( uint32_t color, const char *format, ... );

        bool    AddLineV( const char *format, va_list arguments );
        bool    AddLineV( uint32_t color, const char *format, va_list arguments );

        /// Static functions that you give a filename to and it searches for a log based on that
        /// (or creates one if it isn't available)
        static bool AddLineS( const plFileName &filename, const char *format, ... );
        static bool AddLineS( const plFileName &filename, uint32_t color, const char *format, ... );

        void    Clear( void );

        // Clear and open a new file.
        void    Bounce( uint32_t flags=0 );

        const plFileName &GetFileName() const { return fFilename; }

        void SetForceLog(bool force) { fForceLog = force; }
};


//// Manager Class Definition ////////////////////////////////////////////////

class plStatusLogMgr
{
    friend class plStatusLog;

    private:

        plStatusLogMgr();
        static plStatusLogMgr   fManager;

    protected:

        plStatusLog     *fDisplays;
        plStatusLog     *fCurrDisplay;

        plStatusLogDrawerStub   *fDrawer;

        double fLastLogChangeTime;

        static plFileName IGetBasePath();

    public:

        enum
        {
            kDefaultNumLines    = 40
        };

        ~plStatusLogMgr();

        static plStatusLogMgr   &GetInstance( void );

        void        Draw( void );

        plStatusLog *CreateStatusLog( uint8_t numDisplayLines, const plFileName &filename, uint32_t flags = plStatusLog::kFilledBackground );
        void        ToggleStatusLog( plStatusLog *logToDisplay );
        void        NextStatusLog( void );
        void        PrevStatusLog( void );
        void        SetCurrStatusLog( const plFileName &logName );
        plStatusLog *FindLog( const plFileName &filename, bool createIfNotFound = true );

        void        SetDrawer( plStatusLogDrawerStub *drawer ) { fDrawer = drawer; }

        void        BounceLogs();

        // Create a new folder and copy all log files into it (returns false on failure)
        bool        DumpLogs( const plFileName &newFolderName );
};

//// plStatusLogDrawerStub Class ////////////////////////////////////////////
//  Sometimes, we want to be able to link to plStatusLog without having the
//  pipeline-drawing functionality. So we do it this way: we define a single
//  class of type plStatusLogDrawerStub. If it's allocated and we're given a
//  pointer to it (by, say, the pipeline), then we use it to draw and all
//  is happy. If not, we don't draw.

class plStatusLogDrawerStub
{
    protected:

        uint32_t      IGetMaxNumLines( plStatusLog *log ) const { return log->fMaxNumLines; }
        char        **IGetLines( plStatusLog *log ) const { return log->fLines; }
        plFileName    IGetFilename( plStatusLog *log ) const { return log->GetFileName(); }
        uint32_t     *IGetColors( plStatusLog *log ) const { return log->fColors; }
        uint32_t      IGetFlags( plStatusLog *log ) const { return log->fFlags; }
        
    public:
        virtual ~plStatusLogDrawerStub() {}

        virtual void    Draw(plStatusLog* curLog, plStatusLog* firstLog) {}
};

#endif //_plStatusLog_h