| 1 | #ifndef MARS_MLog
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| 2 | #define MARS_MLog
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| 3 |
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| 4 | #ifndef ROOT_TObject
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| 5 | #include <TObject.h>
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| 6 | #endif
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| 7 |
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| 8 | #include <iostream.h> // base classes for MLog
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| 9 |
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| 10 | #define bsz 160 // two standard lines
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| 11 |
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| 12 | enum ELogBits {
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| 13 | kHasChanged = BIT(14) // if gui has changed
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| 14 | };
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| 15 |
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| 16 |
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| 17 | class TGListBox;
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| 18 |
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| 19 | class MLog : public streambuf, public ostream, public TObject
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| 20 | {
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| 21 | public:
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| 22 | typedef enum _flags { eStdout = 0x1, eStderr = 0x2, eFile = 0x4, eGui = 0x8 } Flags_t;
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| 23 |
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| 24 | private:
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| 25 | char fBuffer; //!
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| 26 | char fBase[bsz]; //! Buffer to store the data in
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| 27 | char *fPPtr; //! Pointer to present position in buffer
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| 28 | const char *fEPtr; //! Pointer to end of buffer
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| 29 |
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| 30 | UInt_t fOutputLevel; //! Present output level of the stream
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| 31 | UInt_t fDebugLevel; //! Present global debug level
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| 32 | UInt_t fDevice; //! Flag to indicate the present streams
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| 33 |
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| 34 | Bool_t fIsNull; //! Switch output completely off
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| 35 |
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| 36 | Int_t fGuiLineId;
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| 37 |
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| 38 | ofstream *fout; //! possible file output stream
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| 39 | Bool_t fOutAllocated; //! flag if fout is created by MLogging
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| 40 | TGListBox *fgui; //! Listbox output
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| 41 |
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| 42 | Bool_t fIsDirectGui; //! Pipe text directly to the GUI (for single threaded environments)
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| 43 | char **fGuiLines; //! Lines to pipe to gui
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| 44 | Int_t fNumLines;
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| 45 |
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| 46 | void *fMuxGui; //! Mutex locking access of TGListBox
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| 47 |
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| 48 | void Init();
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| 49 |
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| 50 | void WriteBuffer();
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| 51 | int sync();
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| 52 | int overflow(int i); // i=EOF means not a real overflow
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| 53 |
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| 54 | void AllocateFile(const char *f);
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| 55 | void DeallocateFile();
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| 56 | void ReallocateFile(const char *f);
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| 57 | void CheckFlag(Flags_t chk, int flag);
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| 58 |
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| 59 | public:
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| 60 | MLog(int i=eStdout);
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| 61 | MLog(ofstream &out);
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| 62 | MLog(TGListBox &out);
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| 63 | MLog(const char *fname, int flag=-1);
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| 64 |
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| 65 | MLog(MLog &log);
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| 66 | ~MLog();
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| 67 |
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| 68 | void Lock();
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| 69 | void UnLock();
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| 70 |
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| 71 | void EnableDirectGui() { fIsDirectGui = kTRUE; }
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| 72 | void DisableDirectGui() { fIsDirectGui = kFALSE; }
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| 73 | void UpdateGui();
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| 74 |
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| 75 | void SetDebugLevel(int i) { fDebugLevel = i; }
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| 76 | int GetDebugLevel() const { return fDebugLevel; }
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| 77 | void SetOutputLevel(int i) { fOutputLevel = i; }
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| 78 | void SetOutputDevice(int i) { fDevice = i; }
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| 79 | void EnableOutputDevice(Flags_t f) { fDevice |= f; }
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| 80 | void DisableOutputDevice(Flags_t f) { fDevice &= ~f; }
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| 81 | void operator=(ofstream &out) { SetOutputFile(out); }
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| 82 | void operator=(TGListBox *out) { SetOutputGui(out); }
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| 83 |
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| 84 | Bool_t IsOutputDeviceEnabled(int i) const { return fDevice & i; }
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| 85 |
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| 86 | void SetOutputGui(TGListBox *out, int flag=-1)
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| 87 | {
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| 88 | fgui = out;
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| 89 | CheckFlag(eGui, flag);
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| 90 | }
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| 91 |
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| 92 | void SetOutputFile(ofstream &out, int flag=-1)
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| 93 | {
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| 94 | //
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| 95 | // Set new output file by a given stream. The new output
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| 96 | // file is not deleted automatically. If no flag is specified
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| 97 | // the state of the file-device stream is unchanged.
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| 98 | // if the a flag is specified the state is changed
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| 99 | // in correspondance to the flag
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| 100 | //
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| 101 | DeallocateFile();
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| 102 | fout = &out;
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| 103 | CheckFlag(eFile, flag);
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| 104 | }
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| 105 |
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| 106 | void SetOutputFile(const char *f=NULL, int flag=-1)
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| 107 | {
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| 108 | //
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| 109 | // Set new output file by name. The new output file must
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| 110 | // not be deleted by the user. If no flag is specified
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| 111 | // the state of the file-device stream is unchanged.
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| 112 | // if the a flag is specified the state is changed
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| 113 | // in correspondance to the flag
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| 114 | //
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| 115 | ReallocateFile(f);
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| 116 | CheckFlag(eFile, flag);
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| 117 | }
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| 118 |
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| 119 | ofstream &GetOutputFile()
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| 120 | {
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| 121 | //
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| 122 | // Get the file output stream from MLogging
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| 123 | // if no file output stream is existing yet it will be created.
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| 124 | // For the creating a C-Temporary file name is used.
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| 125 | // if the stream is created here the user must not delete it
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| 126 | //
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| 127 | // What a pitty, but it seems, that there is now way to ask
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| 128 | // an ofstream for the corresponding file name. Elsewhise
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| 129 | // I would implement a GetFileName-function, too.
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| 130 | //
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| 131 | if (!fout)
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| 132 | ReallocateFile(NULL);
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| 133 | return *fout;
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| 134 | }
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| 135 |
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| 136 | void SetNullOutput(Bool_t n=kTRUE) { fIsNull = n; }
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| 137 |
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| 138 | ClassDef(MLog, 0) // This is what we call 'The logging system'
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| 139 | };
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| 140 |
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| 141 | #endif
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