source: trunk/MagicSoft/Mars/mbase/MLog.h@ 8741

Last change on this file since 8741 was 8315, checked in by tbretz, 18 years ago
*** empty log message ***
File size: 7.5 KB
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1/* ======================================================================== *\
2! $Name: not supported by cvs2svn $:$Id: MLog.h,v 1.37 2007-02-13 11:06:53 tbretz Exp $
3\* ======================================================================== */
4#ifndef MARS_MLog
5#define MARS_MLog
6
7#ifndef ROOT_TObject
8#include <TObject.h>
9#endif
10#ifndef ROOT_TString
11#include <TString.h>
12#endif
13#ifndef ROOT_TSystem
14#include <TSystem.h>
15#endif
16
17#include <iostream> // base classes for MLog
18
19class MArgs;
20
21class TEnv;
22class TMutex;
23class TGTextView;
24
25class MLogPlugin;
26
27class MLog : public std::streambuf, public std::ostream, public TObject
28{
29public:
30 typedef enum _flags {
31 eStdout = 0x001,
32 eStderr = 0x002,
33 eFile = 0x004,
34 eGui = 0x008,
35 eNoColors = 0x400 //BIT(15)
36 } Flags_t;
37
38 enum ELogBits {
39 kHasChanged = BIT(14) // if gui has changed
40 };
41
42 enum ELogType {
43 kDefault,
44 kColor,
45 kBlackWhite
46 };
47
48private:
49 enum {
50 kIsUnderlined = BIT(15)//, kIsAutoIntro = BIT(16)
51 };
52 static const char kESC;
53 static const char *const kEsc;
54 static const char *const kReset;
55 static const char *const kRed;
56 static const char *const kGreen;
57 static const char *const kYellow;
58 static const char *const kBlue;
59 static const char *const kUnderline;
60 static const char *const kBlink;
61 static const char *const kBright;
62 static const char *const kDark;
63
64 static const int fgBufferSize = 160; // two standard lines
65
66 char fBuffer; //!
67 char fBase[fgBufferSize+1]; //! Buffer to store the data in
68 char *fPPtr; //! Pointer to present position in buffer
69 const char *fEPtr; //! Pointer to end of buffer
70
71 UInt_t fOutputLevel; //! Present output level of the stream
72 UInt_t fDebugLevel; //! Present global debug level
73 UInt_t fDevice; //! Flag to indicate the present streams
74
75 Bool_t fIsNull; //! Switch output completely off
76
77 ofstream *fOut; //! possible file output stream
78 Bool_t fOutAllocated; //! flag if fout is created by MLogging
79 TGTextView *fGui; //! Text View output
80
81 Bool_t fIsDirectGui; //! Pipe text directly to the GUI (for single threaded environments)
82 TString **fGuiLines; //! Lines to pipe to gui
83 Int_t fNumLines; //!
84 TString fGuiLine; //!
85
86#ifdef _REENTRANT
87 TMutex *fMuxGui; //! Mutex locking access of TGListBox
88 TMutex *fMuxStream; //! Mutex locking access to streaming
89#endif
90
91 TList *fPlugins;
92
93 void Init();
94
95 void WriteBuffer();
96 int sync();
97 int overflow(int i); // i=EOF means not a real overflow
98
99 void AllocateFile(const char *f);
100 void DeallocateFile();
101 void ReallocateFile(const char *f);
102 void CheckFlag(Flags_t chk, int flag);
103 void Output(ostream &out, int len);
104 void AddGuiLine(const TString& line);
105
106 // User defined error handling (see TError.h)
107 static bool ErrorHandlerIgnore(Int_t level);
108 static void ErrorHandlerPrint(Int_t level, const char *location, const char *msg);
109 static void ErrorHandlerCol(Int_t level, Bool_t abort, const char *location, const char *msg);
110 static void ErrorHandlerAll(Int_t level, Bool_t abort, const char *location, const char *msg);
111
112public:
113
114 MLog(int i=eStdout);
115 MLog(ofstream &out);
116 MLog(TGTextView &out);
117 MLog(const char *fname, int flag=-1);
118
119 MLog(MLog const& log) : std::ios(), std::streambuf(), ostream((std::streambuf*)&log), TObject()
120 {
121 fOutputLevel = log.fOutputLevel;
122 fDebugLevel = log.fDebugLevel;
123 fDevice = log.fDevice;
124 }
125 ~MLog();
126
127 static TString Intro();
128 static void RedirectErrorHandler(ELogType typ=kColor);
129
130 bool LockUpdate(const char *msg);
131 bool UnLockUpdate(const char *msg);
132
133 bool Lock(const char *msg="");
134 bool UnLock(const char *msg="");
135
136 void EnableDirectGui() { fIsDirectGui = kTRUE; }
137 void DisableDirectGui() { fIsDirectGui = kFALSE; }
138 void UpdateGui();
139
140 void Underline();
141
142 void SetDebugLevel(int i) { fDebugLevel = i; }
143 int GetDebugLevel() const { return fDebugLevel; }
144 void SetOutputLevel(int i) { fOutputLevel = i; }
145 void SetOutputDevice(int i) { fDevice = i; }
146 void EnableOutputDevice(Flags_t f) { fDevice |= f; }
147 void DisableOutputDevice(Flags_t f) { fDevice &= ~f; }
148 void operator=(ofstream &sout) { SetOutputFile(sout); }
149 void operator=(TGTextView *sout) { SetOutputGui(sout); }
150 //void SetAutoIntro(Bool_t b=kTRUE) { b ? SetBit(kIsAutoIntro) : SetBit(kIsAutoIntro); }
151
152 Bool_t IsNullOutput() const { return fIsNull; }
153 Bool_t IsOutputDeviceEnabled(int i) const { return fDevice & i; }
154
155 void SetOutputGui(TGTextView *sout, int flag=-1)
156 {
157 fGui = sout;
158 CheckFlag(eGui, flag);
159 }
160
161 void SetOutputFile(ofstream &sout, int flag=-1)
162 {
163 //
164 // Set new output file by a given stream. The new output
165 // file is not deleted automatically. If no flag is specified
166 // the state of the file-device stream is unchanged.
167 // if the a flag is specified the state is changed
168 // in correspondance to the flag
169 //
170 DeallocateFile();
171 fOut = &sout;
172 CheckFlag(eFile, flag);
173 }
174
175 void SetOutputFile(const char *f=NULL, int flag=-1)
176 {
177 //
178 // Set new output file by name. The new output file must
179 // not be deleted by the user. If no flag is specified
180 // the state of the file-device stream is unchanged.
181 // if the a flag is specified the state is changed
182 // in correspondance to the flag
183 //
184 ReallocateFile(f);
185 CheckFlag(eFile, flag);
186 }
187
188 ofstream &GetOutputFile()
189 {
190 //
191 // Get the file output stream from MLogging
192 // if no file output stream is existing yet it will be created.
193 // For the creating a C-Temporary file name is used.
194 // if the stream is created here the user must not delete it
195 //
196 // What a pitty, but it seems, that there is now way to ask
197 // an ofstream for the corresponding file name. Elsewhise
198 // I would implement a GetFileName-function, too.
199 //
200 if (!fOut)
201 ReallocateFile(NULL);
202 return *fOut;
203 }
204
205 // FIXME: Switch off colors when on....
206 void SetNullOutput(Bool_t n=kTRUE) { fIsNull = n; }
207
208 void SetNoColors(Bool_t flag=kTRUE) { flag ? SetBit(eNoColors) : ResetBit(eNoColors); }
209
210 void Setup(MArgs &arg);
211 void Usage();
212
213 void ReadEnv(const TEnv &env, TString prefix="", Bool_t print=kFALSE);
214 void WriteEnv(TEnv &env, TString prefix="", Bool_t print=kFALSE) const;
215
216 MLog &Separator(TString str="", int outlvl=0)
217 {
218 if (!str.IsNull())
219 {
220 const Int_t l = (78-str.Length())/2-3;
221 str.Prepend("={ ");
222 str.Prepend('-', l<1?1:l);
223 str.Append(" }=");
224 str.Append('-', l<1?1:l);
225 }
226 if (str.Length()<78)
227 str.Append('-', 78-str.Length());
228
229 const int save = fOutputLevel;
230 SetOutputLevel(outlvl);
231 (*this) << str << std::endl;
232 fOutputLevel = save;
233
234 return *this;
235 }
236
237 void AddPlugin(MLogPlugin *plug);
238
239 ClassDef(MLog, 0) // This is what we call 'The logging system'
240};
241
242//
243// This is the definition of a global output stream, which by
244// default pipes all output to the stdout
245//
246R__EXTERN MLog gLog;
247
248#endif
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