src/common/log.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        src/common/log.cpp
   3 // Purpose:     Assorted wxLogXXX functions, and wxLog (sink for logs)
   4 // Author:      Vadim Zeitlin
   5 // Modified by:
   6 // Created:     29/01/98
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 // For compilers that support precompilation, includes "wx.h".
  21 #include "wx/wxprec.h"
  22
  23 #ifdef __BORLANDC__
  24     #pragma hdrstop
  25 #endif
  26
  27 #if wxUSE_LOG
  28
  29 // wxWidgets
  30 #ifndef WX_PRECOMP
  31     #include "wx/log.h"
  32     #include "wx/app.h"
  33     #include "wx/arrstr.h"
  34     #include "wx/intl.h"
  35     #include "wx/string.h"
  36     #include "wx/utils.h"
  37 #endif //WX_PRECOMP
  38
  39 #include "wx/apptrait.h"
  40 #include "wx/datetime.h"
  41 #include "wx/file.h"
  42 #include "wx/msgout.h"
  43 #include "wx/textfile.h"
  44 #include "wx/thread.h"
  45 #include "wx/crt.h"
  46
  47 // other standard headers
  48 #ifndef __WXWINCE__
  49 #include <errno.h>
  50 #endif
  51
  52 #include <stdlib.h>
  53
  54 #ifndef __WXWINCE__
  55 #include <time.h>
  56 #else
  57 #include "wx/msw/wince/time.h"
  58 #endif
  59
  60 #if defined(__WINDOWS__)
  61     #include "wx/msw/private.h" // includes windows.h
  62 #endif
  63
  64 // ----------------------------------------------------------------------------
  65 // non member functions
  66 // ----------------------------------------------------------------------------
  67
  68 // define this to enable wrapping of log messages
  69 //#define LOG_PRETTY_WRAP
  70
  71 #ifdef  LOG_PRETTY_WRAP
  72   static void wxLogWrap(FILE *f, const char *pszPrefix, const char *psz);
  73 #endif
  74
  75 // ============================================================================
  76 // implementation
  77 // ============================================================================
  78
  79 // ----------------------------------------------------------------------------
  80 // implementation of Log functions
  81 //
  82 // NB: unfortunately we need all these distinct functions, we can't make them
  83 //     macros and not all compilers inline vararg functions.
  84 // ----------------------------------------------------------------------------
  85
  86 // generic log function
  87 void wxVLogGeneric(wxLogLevel level, const wxString& format, va_list argptr)
  88 {
  89     if ( wxLog::IsEnabled() ) {
  90         wxLog::OnLog(level, wxString::FormatV(format, argptr), time(NULL));
  91     }
  92 }
  93
  94 #if !wxUSE_UTF8_LOCALE_ONLY
  95 void wxDoLogGenericWchar(wxLogLevel level, const wxChar *format, ...)
  96 {
  97     va_list argptr;
  98     va_start(argptr, format);
  99     wxVLogGeneric(level, format, argptr);
 100     va_end(argptr);
 101 }
 102 #endif // wxUSE_UTF8_LOCALE_ONLY
 103
 104 #if wxUSE_UNICODE_UTF8
 105 void wxDoLogGenericUtf8(wxLogLevel level, const char *format, ...)
 106 {
 107     va_list argptr;
 108     va_start(argptr, format);
 109     wxVLogGeneric(level, format, argptr);
 110     va_end(argptr);
 111 }
 112 #endif // wxUSE_UNICODE_UTF8
 113
 114 #if !wxUSE_UTF8_LOCALE_ONLY
 115     #define IMPLEMENT_LOG_FUNCTION_WCHAR(level)                         \
 116       void wxDoLog##level##Wchar(const wxChar *format, ...)             \
 117       {                                                                 \
 118         va_list argptr;                                                 \
 119         va_start(argptr, format);                                       \
 120         wxVLog##level(format, argptr);                                  \
 121         va_end(argptr);                                                 \
 122       }
 123 #else
 124     #define IMPLEMENT_LOG_FUNCTION_WCHAR(level)
 125 #endif
 126
 127 #if wxUSE_UNICODE_UTF8
 128     #define IMPLEMENT_LOG_FUNCTION_UTF8(level)                          \
 129       void wxDoLog##level##Utf8(const char *format, ...)                \
 130       {                                                                 \
 131         va_list argptr;                                                 \
 132         va_start(argptr, format);                                       \
 133         wxVLog##level(format, argptr);                                  \
 134         va_end(argptr);                                                 \
 135       }
 136 #else
 137     #define IMPLEMENT_LOG_FUNCTION_UTF8(level)
 138 #endif
 139
 140 #define IMPLEMENT_LOG_FUNCTION(level)                               \
 141   void wxVLog##level(const wxString& format, va_list argptr)        \
 142   {                                                                 \
 143     if ( wxLog::IsEnabled() ) {                                     \
 144       wxLog::OnLog(wxLOG_##level,                                   \
 145                    wxString::FormatV(format, argptr), time(NULL));  \
 146     }                                                               \
 147   }                                                                 \
 148   IMPLEMENT_LOG_FUNCTION_WCHAR(level)                               \
 149   IMPLEMENT_LOG_FUNCTION_UTF8(level)
 150
 151 IMPLEMENT_LOG_FUNCTION(Error)
 152 IMPLEMENT_LOG_FUNCTION(Warning)
 153 IMPLEMENT_LOG_FUNCTION(Message)
 154 IMPLEMENT_LOG_FUNCTION(Info)
 155 IMPLEMENT_LOG_FUNCTION(Status)
 156
 157 void wxSafeShowMessage(const wxString& title, const wxString& text)
 158 {
 159 #ifdef __WINDOWS__
 160     ::MessageBox(NULL, text.wx_str(), title.wx_str(), MB_OK | MB_ICONSTOP);
 161 #else
 162     wxFprintf(stderr, wxS("%s: %s\n"), title.c_str(), text.c_str());
 163     fflush(stderr);
 164 #endif
 165 }
 166
 167 // fatal errors can't be suppressed nor handled by the custom log target and
 168 // always terminate the program
 169 void wxVLogFatalError(const wxString& format, va_list argptr)
 170 {
 171     wxSafeShowMessage(wxS("Fatal Error"), wxString::FormatV(format, argptr));
 172
 173 #ifdef __WXWINCE__
 174     ExitThread(3);
 175 #else
 176     abort();
 177 #endif
 178 }
 179
 180 #if !wxUSE_UTF8_LOCALE_ONLY
 181 void wxDoLogFatalErrorWchar(const wxChar *format, ...)
 182 {
 183     va_list argptr;
 184     va_start(argptr, format);
 185     wxVLogFatalError(format, argptr);
 186
 187     // some compilers warn about unreachable code and it shouldn't matter
 188     // for the others anyhow...
 189     //va_end(argptr);
 190 }
 191 #endif // wxUSE_UTF8_LOCALE_ONLY
 192
 193 #if wxUSE_UNICODE_UTF8
 194 void wxDoLogFatalErrorUtf8(const char *format, ...)
 195 {
 196     va_list argptr;
 197     va_start(argptr, format);
 198     wxVLogFatalError(format, argptr);
 199
 200     // some compilers warn about unreachable code and it shouldn't matter
 201     // for the others anyhow...
 202     //va_end(argptr);
 203 }
 204 #endif // wxUSE_UNICODE_UTF8
 205
 206 // same as info, but only if 'verbose' mode is on
 207 void wxVLogVerbose(const wxString& format, va_list argptr)
 208 {
 209     if ( wxLog::IsEnabled() ) {
 210         if ( wxLog::GetActiveTarget() != NULL && wxLog::GetVerbose() ) {
 211             wxLog::OnLog(wxLOG_Info,
 212                          wxString::FormatV(format, argptr), time(NULL));
 213         }
 214     }
 215 }
 216
 217 #if !wxUSE_UTF8_LOCALE_ONLY
 218 void wxDoLogVerboseWchar(const wxChar *format, ...)
 219 {
 220     va_list argptr;
 221     va_start(argptr, format);
 222     wxVLogVerbose(format, argptr);
 223     va_end(argptr);
 224 }
 225 #endif // !wxUSE_UTF8_LOCALE_ONLY
 226
 227 #if wxUSE_UNICODE_UTF8
 228 void wxDoLogVerboseUtf8(const char *format, ...)
 229 {
 230     va_list argptr;
 231     va_start(argptr, format);
 232     wxVLogVerbose(format, argptr);
 233     va_end(argptr);
 234 }
 235 #endif // wxUSE_UNICODE_UTF8
 236
 237 // debug functions
 238 #ifdef __WXDEBUG__
 239
 240 #if !wxUSE_UTF8_LOCALE_ONLY
 241     #define IMPLEMENT_LOG_DEBUG_FUNCTION_WCHAR(level)                   \
 242       void wxDoLog##level##Wchar(const wxChar *format, ...)             \
 243       {                                                                 \
 244         va_list argptr;                                                 \
 245         va_start(argptr, format);                                       \
 246         wxVLog##level(format, argptr);                                  \
 247         va_end(argptr);                                                 \
 248       }
 249 #else
 250     #define IMPLEMENT_LOG_DEBUG_FUNCTION_WCHAR(level)
 251 #endif
 252
 253 #if wxUSE_UNICODE_UTF8
 254     #define IMPLEMENT_LOG_DEBUG_FUNCTION_UTF8(level)                    \
 255       void wxDoLog##level##Utf8(const char *format, ...)                \
 256       {                                                                 \
 257         va_list argptr;                                                 \
 258         va_start(argptr, format);                                       \
 259         wxVLog##level(format, argptr);                                  \
 260         va_end(argptr);                                                 \
 261       }
 262 #else
 263     #define IMPLEMENT_LOG_DEBUG_FUNCTION_UTF8(level)
 264 #endif
 265
 266 #define IMPLEMENT_LOG_DEBUG_FUNCTION(level)                         \
 267   void wxVLog##level(const wxString& format, va_list argptr)        \
 268   {                                                                 \
 269     if ( wxLog::IsEnabled() ) {                                     \
 270       wxLog::OnLog(wxLOG_##level,                                   \
 271                    wxString::FormatV(format, argptr), time(NULL));  \
 272     }                                                               \
 273   }                                                                 \
 274   IMPLEMENT_LOG_DEBUG_FUNCTION_WCHAR(level)                         \
 275   IMPLEMENT_LOG_DEBUG_FUNCTION_UTF8(level)
 276
 277
 278   void wxVLogTrace(const wxString& mask, const wxString& format, va_list argptr)
 279   {
 280     if ( wxLog::IsEnabled() && wxLog::IsAllowedTraceMask(mask) ) {
 281       wxString msg;
 282       msg << wxS("(") << mask << wxS(") ") << wxString::FormatV(format, argptr);
 283
 284       wxLog::OnLog(wxLOG_Trace, msg, time(NULL));
 285     }
 286   }
 287
 288 #if !wxUSE_UTF8_LOCALE_ONLY
 289   void wxDoLogTraceWchar(const wxString& mask, const wxChar *format, ...)
 290   {
 291     va_list argptr;
 292     va_start(argptr, format);
 293     wxVLogTrace(mask, format, argptr);
 294     va_end(argptr);
 295   }
 296 #endif // !wxUSE_UTF8_LOCALE_ONLY
 297
 298 #if wxUSE_UNICODE_UTF8
 299   void wxDoLogTraceUtf8(const wxString& mask, const char *format, ...)
 300   {
 301     va_list argptr;
 302     va_start(argptr, format);
 303     wxVLogTrace(mask, format, argptr);
 304     va_end(argptr);
 305   }
 306 #endif // wxUSE_UNICODE_UTF8
 307
 308   void wxVLogTrace(wxTraceMask mask, const wxString& format, va_list argptr)
 309   {
 310     // we check that all of mask bits are set in the current mask, so
 311     // that wxLogTrace(wxTraceRefCount | wxTraceOle) will only do something
 312     // if both bits are set.
 313     if ( wxLog::IsEnabled() && ((wxLog::GetTraceMask() & mask) == mask) ) {
 314       wxLog::OnLog(wxLOG_Trace, wxString::FormatV(format, argptr), time(NULL));
 315     }
 316   }
 317
 318 #if !wxUSE_UTF8_LOCALE_ONLY
 319   void wxDoLogTraceWchar(wxTraceMask mask, const wxChar *format, ...)
 320   {
 321     va_list argptr;
 322     va_start(argptr, format);
 323     wxVLogTrace(mask, format, argptr);
 324     va_end(argptr);
 325   }
 326 #endif // !wxUSE_UTF8_LOCALE_ONLY
 327
 328 #if wxUSE_UNICODE_UTF8
 329   void wxDoLogTraceUtf8(wxTraceMask mask, const char *format, ...)
 330   {
 331     va_list argptr;
 332     va_start(argptr, format);
 333     wxVLogTrace(mask, format, argptr);
 334     va_end(argptr);
 335   }
 336 #endif // wxUSE_UNICODE_UTF8
 337
 338 #ifdef __WATCOMC__
 339   // workaround for http://bugzilla.openwatcom.org/show_bug.cgi?id=351
 340   void wxDoLogTraceWchar(int mask, const wxChar *format, ...)
 341   {
 342     va_list argptr;
 343     va_start(argptr, format);
 344     wxVLogTrace(mask, format, argptr);
 345     va_end(argptr);
 346   }
 347
 348   void wxDoLogTraceWchar(const char *mask, const wxChar *format, ...)
 349   {
 350     va_list argptr;
 351     va_start(argptr, format);
 352     wxVLogTrace(mask, format, argptr);
 353     va_end(argptr);
 354   }
 355
 356   void wxDoLogTraceWchar(const wchar_t *mask, const wxChar *format, ...)
 357   {
 358     va_list argptr;
 359     va_start(argptr, format);
 360     wxVLogTrace(mask, format, argptr);
 361     va_end(argptr);
 362   }
 363
 364   void wxVLogTrace(int mask, const wxString& format, va_list argptr)
 365     { wxVLogTrace((wxTraceMask)mask, format, argptr); }
 366   void wxVLogTrace(const char *mask, const wxString& format, va_list argptr)
 367     { wxVLogTrace(wxString(mask), format, argptr); }
 368   void wxVLogTrace(const wchar_t *mask, const wxString& format, va_list argptr)
 369     { wxVLogTrace(wxString(mask), format, argptr); }
 370 #endif // __WATCOMC__
 371
 372 #else // release
 373   #define IMPLEMENT_LOG_DEBUG_FUNCTION(level)
 374 #endif
 375
 376 IMPLEMENT_LOG_DEBUG_FUNCTION(Debug)
 377 IMPLEMENT_LOG_DEBUG_FUNCTION(Trace)
 378
 379 // wxLogSysError: one uses the last error code, for other  you must give it
 380 // explicitly
 381
 382 // return the system error message description
 383 static inline wxString wxLogSysErrorHelper(long err)
 384 {
 385     return wxString::Format(_(" (error %ld: %s)"), err, wxSysErrorMsg(err));
 386 }
 387
 388 void WXDLLIMPEXP_BASE wxVLogSysError(const wxString& format, va_list argptr)
 389 {
 390     wxVLogSysError(wxSysErrorCode(), format, argptr);
 391 }
 392
 393 #if !wxUSE_UTF8_LOCALE_ONLY
 394 void WXDLLIMPEXP_BASE wxDoLogSysErrorWchar(const wxChar *format, ...)
 395 {
 396     va_list argptr;
 397     va_start(argptr, format);
 398     wxVLogSysError(format, argptr);
 399     va_end(argptr);
 400 }
 401 #endif // !wxUSE_UTF8_LOCALE_ONLY
 402
 403 #if wxUSE_UNICODE_UTF8
 404 void WXDLLIMPEXP_BASE wxDoLogSysErrorUtf8(const char *format, ...)
 405 {
 406     va_list argptr;
 407     va_start(argptr, format);
 408     wxVLogSysError(format, argptr);
 409     va_end(argptr);
 410 }
 411 #endif // wxUSE_UNICODE_UTF8
 412
 413 void WXDLLIMPEXP_BASE wxVLogSysError(long err, const wxString& format, va_list argptr)
 414 {
 415     if ( wxLog::IsEnabled() ) {
 416         wxLog::OnLog(wxLOG_Error,
 417                      wxString::FormatV(format, argptr) + wxLogSysErrorHelper(err),
 418                      time(NULL));
 419     }
 420 }
 421
 422 #if !wxUSE_UTF8_LOCALE_ONLY
 423 void WXDLLIMPEXP_BASE wxDoLogSysErrorWchar(long lErrCode, const wxChar *format, ...)
 424 {
 425     va_list argptr;
 426     va_start(argptr, format);
 427     wxVLogSysError(lErrCode, format, argptr);
 428     va_end(argptr);
 429 }
 430 #endif // !wxUSE_UTF8_LOCALE_ONLY
 431
 432 #if wxUSE_UNICODE_UTF8
 433 void WXDLLIMPEXP_BASE wxDoLogSysErrorUtf8(long lErrCode, const char *format, ...)
 434 {
 435     va_list argptr;
 436     va_start(argptr, format);
 437     wxVLogSysError(lErrCode, format, argptr);
 438     va_end(argptr);
 439 }
 440 #endif // wxUSE_UNICODE_UTF8
 441
 442 #ifdef __WATCOMC__
 443 // workaround for http://bugzilla.openwatcom.org/show_bug.cgi?id=351
 444 void WXDLLIMPEXP_BASE wxDoLogSysErrorWchar(unsigned long lErrCode, const wxChar *format, ...)
 445 {
 446     va_list argptr;
 447     va_start(argptr, format);
 448     wxVLogSysError(lErrCode, format, argptr);
 449     va_end(argptr);
 450 }
 451
 452 void WXDLLIMPEXP_BASE wxVLogSysError(unsigned long err, const wxString& format, va_list argptr)
 453     { wxVLogSysError((long)err, format, argptr); }
 454 #endif // __WATCOMC__
 455
 456 // ----------------------------------------------------------------------------
 457 // wxLog class implementation
 458 // ----------------------------------------------------------------------------
 459
 460 unsigned wxLog::LogLastRepeatIfNeeded()
 461 {
 462     wxCRIT_SECT_LOCKER(lock, ms_prevCS);
 463
 464     return LogLastRepeatIfNeededUnlocked();
 465 }
 466
 467 unsigned wxLog::LogLastRepeatIfNeededUnlocked()
 468 {
 469     const unsigned count = ms_prevCounter;
 470
 471     if ( ms_prevCounter )
 472     {
 473         wxString msg;
 474 #if wxUSE_INTL
 475         msg.Printf(wxPLURAL("The previous message repeated once.",
 476                             "The previous message repeated %lu times.",
 477                             ms_prevCounter),
 478                    ms_prevCounter);
 479 #else
 480         msg.Printf(wxS("The previous message was repeated %lu times."),
 481                    ms_prevCounter);
 482 #endif
 483         ms_prevCounter = 0;
 484         ms_prevString.clear();
 485         DoLog(ms_prevLevel, msg, ms_prevTimeStamp);
 486     }
 487
 488     return count;
 489 }
 490
 491 wxLog::~wxLog()
 492 {
 493     LogLastRepeatIfNeeded();
 494 }
 495
 496 /* static */
 497 void wxLog::OnLog(wxLogLevel level, const wxString& szString, time_t t)
 498 {
 499     if ( IsEnabled() && ms_logLevel >= level )
 500     {
 501         wxLog *pLogger = GetActiveTarget();
 502         if ( pLogger )
 503         {
 504             if ( GetRepetitionCounting() )
 505             {
 506                 wxCRIT_SECT_LOCKER(lock, ms_prevCS);
 507
 508                 if ( szString == ms_prevString )
 509                 {
 510                     ms_prevCounter++;
 511
 512                     // nothing else to do, in particular, don't log the
 513                     // repeated message
 514                     return;
 515                 }
 516
 517                 pLogger->LogLastRepeatIfNeededUnlocked();
 518
 519                 // reset repetition counter for a new message
 520                 ms_prevString = szString;
 521                 ms_prevLevel = level;
 522                 ms_prevTimeStamp = t;
 523             }
 524
 525             pLogger->DoLog(level, szString, t);
 526         }
 527     }
 528 }
 529
 530 // deprecated function
 531 #if WXWIN_COMPATIBILITY_2_6
 532
 533 wxChar *wxLog::SetLogBuffer(wxChar * WXUNUSED(buf), size_t WXUNUSED(size))
 534 {
 535     return NULL;
 536 }
 537
 538 #endif // WXWIN_COMPATIBILITY_2_6
 539
 540 #if WXWIN_COMPATIBILITY_2_8
 541
 542 void wxLog::DoLog(wxLogLevel WXUNUSED(level),
 543                   const char *WXUNUSED(szString),
 544                   time_t WXUNUSED(t))
 545 {
 546 }
 547
 548 void wxLog::DoLog(wxLogLevel WXUNUSED(level),
 549                   const wchar_t *WXUNUSED(wzString),
 550                   time_t WXUNUSED(t))
 551 {
 552 }
 553
 554 #endif // WXWIN_COMPATIBILITY_2_8
 555
 556 wxLog *wxLog::GetActiveTarget()
 557 {
 558     if ( ms_bAutoCreate && ms_pLogger == NULL ) {
 559         // prevent infinite recursion if someone calls wxLogXXX() from
 560         // wxApp::CreateLogTarget()
 561         static bool s_bInGetActiveTarget = false;
 562         if ( !s_bInGetActiveTarget ) {
 563             s_bInGetActiveTarget = true;
 564
 565             // ask the application to create a log target for us
 566             if ( wxTheApp != NULL )
 567                 ms_pLogger = wxTheApp->GetTraits()->CreateLogTarget();
 568             else
 569                 ms_pLogger = new wxLogStderr;
 570
 571             s_bInGetActiveTarget = false;
 572
 573             // do nothing if it fails - what can we do?
 574         }
 575     }
 576
 577     return ms_pLogger;
 578 }
 579
 580 wxLog *wxLog::SetActiveTarget(wxLog *pLogger)
 581 {
 582     if ( ms_pLogger != NULL ) {
 583         // flush the old messages before changing because otherwise they might
 584         // get lost later if this target is not restored
 585         ms_pLogger->Flush();
 586     }
 587
 588     wxLog *pOldLogger = ms_pLogger;
 589     ms_pLogger = pLogger;
 590
 591     return pOldLogger;
 592 }
 593
 594 void wxLog::DontCreateOnDemand()
 595 {
 596     ms_bAutoCreate = false;
 597
 598     // this is usually called at the end of the program and we assume that it
 599     // is *always* called at the end - so we free memory here to avoid false
 600     // memory leak reports from wxWin  memory tracking code
 601     ClearTraceMasks();
 602 }
 603
 604 void wxLog::DoCreateOnDemand()
 605 {
 606     ms_bAutoCreate = true;
 607 }
 608
 609 void wxLog::RemoveTraceMask(const wxString& str)
 610 {
 611     int index = ms_aTraceMasks.Index(str);
 612     if ( index != wxNOT_FOUND )
 613         ms_aTraceMasks.RemoveAt((size_t)index);
 614 }
 615
 616 void wxLog::ClearTraceMasks()
 617 {
 618     ms_aTraceMasks.Clear();
 619 }
 620
 621 void wxLog::TimeStamp(wxString *str)
 622 {
 623 #if wxUSE_DATETIME
 624     if ( !ms_timestamp.empty() )
 625     {
 626         wxChar buf[256];
 627         time_t timeNow;
 628         (void)time(&timeNow);
 629
 630         struct tm tm;
 631         wxStrftime(buf, WXSIZEOF(buf),
 632                     ms_timestamp, wxLocaltime_r(&timeNow, &tm));
 633
 634         str->Empty();
 635         *str << buf << wxS(": ");
 636     }
 637 #endif // wxUSE_DATETIME
 638 }
 639
 640 void wxLog::DoLog(wxLogLevel level, const wxString& szString, time_t t)
 641 {
 642 #if WXWIN_COMPATIBILITY_2_8
 643     // DoLog() signature changed since 2.8, so we call the old versions here
 644     // so that existing custom log classes still work:
 645     DoLog(level, (const char*)szString.mb_str(), t);
 646     DoLog(level, (const wchar_t*)szString.wc_str(), t);
 647 #endif
 648
 649     switch ( level ) {
 650         case wxLOG_FatalError:
 651             LogString(_("Fatal error: ") + szString, t);
 652             LogString(_("Program aborted."), t);
 653             Flush();
 654 #ifdef __WXWINCE__
 655             ExitThread(3);
 656 #else
 657             abort();
 658 #endif
 659             break;
 660
 661         case wxLOG_Error:
 662             LogString(_("Error: ") + szString, t);
 663             break;
 664
 665         case wxLOG_Warning:
 666             LogString(_("Warning: ") + szString, t);
 667             break;
 668
 669         case wxLOG_Info:
 670             if ( GetVerbose() )
 671         case wxLOG_Message:
 672         case wxLOG_Status:
 673         default:    // log unknown log levels too
 674                 LogString(szString, t);
 675             break;
 676
 677         case wxLOG_Trace:
 678         case wxLOG_Debug:
 679 #ifdef __WXDEBUG__
 680             {
 681                 wxString msg = level == wxLOG_Trace ? wxS("Trace: ")
 682                                                     : wxS("Debug: ");
 683                 msg << szString;
 684                 LogString(msg, t);
 685             }
 686 #endif // Debug
 687             break;
 688     }
 689 }
 690
 691 void wxLog::DoLogString(const wxString& szString, time_t t)
 692 {
 693 #if WXWIN_COMPATIBILITY_2_8
 694     // DoLogString() signature changed since 2.8, so we call the old versions
 695     // here so that existing custom log classes still work; unfortunately this
 696     // also means that we can't have the wxFAIL_MSG below in compat mode
 697     DoLogString((const char*)szString.mb_str(), t);
 698     DoLogString((const wchar_t*)szString.wc_str(), t);
 699 #else
 700     wxFAIL_MSG(wxS("DoLogString must be overriden if it's called."));
 701     wxUnusedVar(szString);
 702     wxUnusedVar(t);
 703 #endif
 704 }
 705
 706 void wxLog::Flush()
 707 {
 708     // nothing to do here
 709 }
 710
 711 /*static*/ bool wxLog::IsAllowedTraceMask(const wxString& mask)
 712 {
 713     for ( wxArrayString::iterator it = ms_aTraceMasks.begin(),
 714                                   en = ms_aTraceMasks.end();
 715          it != en; ++it )
 716         if ( *it == mask)
 717             return true;
 718     return false;
 719 }
 720
 721 // ----------------------------------------------------------------------------
 722 // wxLogBuffer implementation
 723 // ----------------------------------------------------------------------------
 724
 725 void wxLogBuffer::Flush()
 726 {
 727     if ( !m_str.empty() )
 728     {
 729         wxMessageOutputBest out;
 730         out.Printf(wxS("%s"), m_str.c_str());
 731         m_str.clear();
 732     }
 733 }
 734
 735 void wxLogBuffer::DoLog(wxLogLevel level, const wxString& szString, time_t t)
 736 {
 737     switch ( level )
 738     {
 739         case wxLOG_Trace:
 740         case wxLOG_Debug:
 741 #ifdef __WXDEBUG__
 742             // don't put debug messages in the buffer, we don't want to show
 743             // them to the user in a msg box, log them immediately
 744             {
 745                 wxString str;
 746                 TimeStamp(&str);
 747                 str += szString;
 748
 749                 wxMessageOutputDebug dbgout;
 750                 dbgout.Printf(wxS("%s\n"), str.c_str());
 751             }
 752 #endif // __WXDEBUG__
 753             break;
 754
 755         default:
 756             wxLog::DoLog(level, szString, t);
 757     }
 758 }
 759
 760 void wxLogBuffer::DoLogString(const wxString& szString, time_t WXUNUSED(t))
 761 {
 762     m_str << szString << wxS("\n");
 763 }
 764
 765 // ----------------------------------------------------------------------------
 766 // wxLogStderr class implementation
 767 // ----------------------------------------------------------------------------
 768
 769 wxLogStderr::wxLogStderr(FILE *fp)
 770 {
 771     if ( fp == NULL )
 772         m_fp = stderr;
 773     else
 774         m_fp = fp;
 775 }
 776
 777 void wxLogStderr::DoLogString(const wxString& szString, time_t WXUNUSED(t))
 778 {
 779     wxString str;
 780     TimeStamp(&str);
 781     str << szString;
 782
 783     wxFputs(str, m_fp);
 784     wxFputc(wxS('\n'), m_fp);
 785     fflush(m_fp);
 786
 787     // under GUI systems such as Windows or Mac, programs usually don't have
 788     // stderr at all, so show the messages also somewhere else, typically in
 789     // the debugger window so that they go at least somewhere instead of being
 790     // simply lost
 791     if ( m_fp == stderr )
 792     {
 793         wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL;
 794         if ( traits && !traits->HasStderr() )
 795         {
 796             wxMessageOutputDebug dbgout;
 797             dbgout.Printf(wxS("%s\n"), str.c_str());
 798         }
 799     }
 800 }
 801
 802 // ----------------------------------------------------------------------------
 803 // wxLogStream implementation
 804 // ----------------------------------------------------------------------------
 805
 806 #if wxUSE_STD_IOSTREAM
 807 #include "wx/ioswrap.h"
 808 wxLogStream::wxLogStream(wxSTD ostream *ostr)
 809 {
 810     if ( ostr == NULL )
 811         m_ostr = &wxSTD cerr;
 812     else
 813         m_ostr = ostr;
 814 }
 815
 816 void wxLogStream::DoLogString(const wxString& szString, time_t WXUNUSED(t))
 817 {
 818     wxString stamp;
 819     TimeStamp(&stamp);
 820     (*m_ostr) << stamp << szString << wxSTD endl;
 821 }
 822 #endif // wxUSE_STD_IOSTREAM
 823
 824 // ----------------------------------------------------------------------------
 825 // wxLogChain
 826 // ----------------------------------------------------------------------------
 827
 828 wxLogChain::wxLogChain(wxLog *logger)
 829 {
 830     m_bPassMessages = true;
 831
 832     m_logNew = logger;
 833     m_logOld = wxLog::SetActiveTarget(this);
 834 }
 835
 836 wxLogChain::~wxLogChain()
 837 {
 838     delete m_logOld;
 839
 840     if ( m_logNew != this )
 841         delete m_logNew;
 842 }
 843
 844 void wxLogChain::SetLog(wxLog *logger)
 845 {
 846     if ( m_logNew != this )
 847         delete m_logNew;
 848
 849     m_logNew = logger;
 850 }
 851
 852 void wxLogChain::Flush()
 853 {
 854     if ( m_logOld )
 855         m_logOld->Flush();
 856
 857     // be careful to avoid infinite recursion
 858     if ( m_logNew && m_logNew != this )
 859         m_logNew->Flush();
 860 }
 861
 862 void wxLogChain::DoLog(wxLogLevel level, const wxString& szString, time_t t)
 863 {
 864     // let the previous logger show it
 865     if ( m_logOld && IsPassingMessages() )
 866     {
 867         // bogus cast just to access protected DoLog
 868         ((wxLogChain *)m_logOld)->DoLog(level, szString, t);
 869     }
 870
 871     if ( m_logNew && m_logNew != this )
 872     {
 873         // as above...
 874         ((wxLogChain *)m_logNew)->DoLog(level, szString, t);
 875     }
 876 }
 877
 878 #ifdef __VISUALC__
 879     // "'this' : used in base member initializer list" - so what?
 880     #pragma warning(disable:4355)
 881 #endif // VC++
 882
 883 // ----------------------------------------------------------------------------
 884 // wxLogInterposer
 885 // ----------------------------------------------------------------------------
 886
 887 wxLogInterposer::wxLogInterposer()
 888                 : wxLogChain(this)
 889 {
 890 }
 891
 892 // ----------------------------------------------------------------------------
 893 // wxLogInterposerTemp
 894 // ----------------------------------------------------------------------------
 895
 896 wxLogInterposerTemp::wxLogInterposerTemp()
 897                 : wxLogChain(this)
 898 {
 899         DetachOldLog();
 900 }
 901
 902 #ifdef __VISUALC__
 903     #pragma warning(default:4355)
 904 #endif // VC++
 905
 906 // ============================================================================
 907 // Global functions/variables
 908 // ============================================================================
 909
 910 // ----------------------------------------------------------------------------
 911 // static variables
 912 // ----------------------------------------------------------------------------
 913
 914 #if wxUSE_THREADS
 915 wxCriticalSection wxLog::ms_prevCS;
 916 #endif // wxUSE_THREADS
 917 bool            wxLog::ms_bRepetCounting = false;
 918 wxString        wxLog::ms_prevString;
 919 unsigned int    wxLog::ms_prevCounter = 0;
 920 time_t          wxLog::ms_prevTimeStamp= 0;
 921 wxLogLevel      wxLog::ms_prevLevel;
 922
 923 wxLog          *wxLog::ms_pLogger      = (wxLog *)NULL;
 924 bool            wxLog::ms_doLog        = true;
 925 bool            wxLog::ms_bAutoCreate  = true;
 926 bool            wxLog::ms_bVerbose     = false;
 927
 928 wxLogLevel      wxLog::ms_logLevel     = wxLOG_Max;  // log everything by default
 929
 930 size_t          wxLog::ms_suspendCount = 0;
 931
 932 wxString        wxLog::ms_timestamp(wxS("%X"));  // time only, no date
 933
 934 wxTraceMask     wxLog::ms_ulTraceMask  = (wxTraceMask)0;
 935 wxArrayString   wxLog::ms_aTraceMasks;
 936
 937 // ----------------------------------------------------------------------------
 938 // stdout error logging helper
 939 // ----------------------------------------------------------------------------
 940
 941 // helper function: wraps the message and justifies it under given position
 942 // (looks more pretty on the terminal). Also adds newline at the end.
 943 //
 944 // TODO this is now disabled until I find a portable way of determining the
 945 //      terminal window size (ok, I found it but does anybody really cares?)
 946 #ifdef LOG_PRETTY_WRAP
 947 static void wxLogWrap(FILE *f, const char *pszPrefix, const char *psz)
 948 {
 949     size_t nMax = 80; // FIXME
 950     size_t nStart = strlen(pszPrefix);
 951     fputs(pszPrefix, f);
 952
 953     size_t n;
 954     while ( *psz != '\0' ) {
 955         for ( n = nStart; (n < nMax) && (*psz != '\0'); n++ )
 956             putc(*psz++, f);
 957
 958         // wrapped?
 959         if ( *psz != '\0' ) {
 960             /*putc('\n', f);*/
 961             for ( n = 0; n < nStart; n++ )
 962                 putc(' ', f);
 963
 964             // as we wrapped, squeeze all white space
 965             while ( isspace(*psz) )
 966                 psz++;
 967         }
 968     }
 969
 970     putc('\n', f);
 971 }
 972 #endif  //LOG_PRETTY_WRAP
 973
 974 // ----------------------------------------------------------------------------
 975 // error code/error message retrieval functions
 976 // ----------------------------------------------------------------------------
 977
 978 // get error code from syste
 979 unsigned long wxSysErrorCode()
 980 {
 981 #if defined(__WXMSW__) && !defined(__WXMICROWIN__)
 982     return ::GetLastError();
 983 #else   //Unix
 984     return errno;
 985 #endif  //Win/Unix
 986 }
 987
 988 // get error message from system
 989 const wxChar *wxSysErrorMsg(unsigned long nErrCode)
 990 {
 991     if ( nErrCode == 0 )
 992         nErrCode = wxSysErrorCode();
 993
 994 #if defined(__WXMSW__) && !defined(__WXMICROWIN__)
 995     static wxChar s_szBuf[1024];
 996
 997     // get error message from system
 998     LPVOID lpMsgBuf;
 999     if ( ::FormatMessage
1000          (
1001             FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
1002             NULL,
1003             nErrCode,
1004             MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
1005             (LPTSTR)&lpMsgBuf,
1006             0,
1007             NULL
1008          ) == 0 )
1009     {
1010         // if this happens, something is seriously wrong, so don't use _() here
1011         // for safety
1012         wxSprintf(s_szBuf, wxS("unknown error %lx"), nErrCode);
1013         return s_szBuf;
1014     }
1015
1016
1017     // copy it to our buffer and free memory
1018     // Crashes on SmartPhone (FIXME)
1019 #if !defined(__SMARTPHONE__) /* of WinCE */
1020     if( lpMsgBuf != 0 )
1021     {
1022         wxStrncpy(s_szBuf, (const wxChar *)lpMsgBuf, WXSIZEOF(s_szBuf) - 1);
1023         s_szBuf[WXSIZEOF(s_szBuf) - 1] = wxS('\0');
1024
1025         LocalFree(lpMsgBuf);
1026
1027         // returned string is capitalized and ended with '\r\n' - bad
1028         s_szBuf[0] = (wxChar)wxTolower(s_szBuf[0]);
1029         size_t len = wxStrlen(s_szBuf);
1030         if ( len > 0 ) {
1031             // truncate string
1032             if ( s_szBuf[len - 2] == wxS('\r') )
1033                 s_szBuf[len - 2] = wxS('\0');
1034         }
1035     }
1036     else
1037 #endif // !__SMARTPHONE__
1038     {
1039         s_szBuf[0] = wxS('\0');
1040     }
1041
1042     return s_szBuf;
1043 #else // !__WXMSW__
1044     #if wxUSE_UNICODE
1045         static wchar_t s_wzBuf[1024];
1046         wxConvCurrent->MB2WC(s_wzBuf, strerror((int)nErrCode),
1047                              WXSIZEOF(s_wzBuf) - 1);
1048         return s_wzBuf;
1049     #else
1050         return strerror((int)nErrCode);
1051     #endif
1052 #endif  // __WXMSW__/!__WXMSW__
1053 }
1054
1055 #endif // wxUSE_LOG