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/wxchar.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 void wxDoLogGeneric(wxLogLevel level, const wxString& format, ...)
  95 {
  96     va_list argptr;
  97     va_start(argptr, format);
  98     wxVLogGeneric(level, format, argptr);
  99     va_end(argptr);
 100 }
 101
 102 #define IMPLEMENT_LOG_FUNCTION(level)                               \
 103   void wxVLog##level(const wxString& format, va_list argptr)        \
 104   {                                                                 \
 105     if ( wxLog::IsEnabled() ) {                                     \
 106       wxLog::OnLog(wxLOG_##level,                                   \
 107                    wxString::FormatV(format, argptr), time(NULL));  \
 108     }                                                               \
 109   }                                                                 \
 110                                                                     \
 111   void wxDoLog##level(const wxString& format, ...)                  \
 112   {                                                                 \
 113     va_list argptr;                                                 \
 114     va_start(argptr, format);                                       \
 115     wxVLog##level(format, argptr);                                  \
 116     va_end(argptr);                                                 \
 117   }
 118
 119 IMPLEMENT_LOG_FUNCTION(Error)
 120 IMPLEMENT_LOG_FUNCTION(Warning)
 121 IMPLEMENT_LOG_FUNCTION(Message)
 122 IMPLEMENT_LOG_FUNCTION(Info)
 123 IMPLEMENT_LOG_FUNCTION(Status)
 124
 125 void wxSafeShowMessage(const wxString& title, const wxString& text)
 126 {
 127 #ifdef __WINDOWS__
 128     ::MessageBox(NULL, text, title, MB_OK | MB_ICONSTOP);
 129 #else
 130     wxFprintf(stderr, _T("%s: %s\n"), title.c_str(), text.c_str());
 131     fflush(stderr);
 132 #endif
 133 }
 134
 135 // fatal errors can't be suppressed nor handled by the custom log target and
 136 // always terminate the program
 137 void wxVLogFatalError(const wxString& format, va_list argptr)
 138 {
 139     wxSafeShowMessage(_T("Fatal Error"), wxString::FormatV(format, argptr));
 140
 141 #ifdef __WXWINCE__
 142     ExitThread(3);
 143 #else
 144     abort();
 145 #endif
 146 }
 147
 148 void wxDoLogFatalError(const wxString& format, ...)
 149 {
 150     va_list argptr;
 151     va_start(argptr, format);
 152     wxVLogFatalError(format, argptr);
 153
 154     // some compilers warn about unreachable code and it shouldn't matter
 155     // for the others anyhow...
 156     //va_end(argptr);
 157 }
 158
 159 // same as info, but only if 'verbose' mode is on
 160 void wxVLogVerbose(const wxString& format, va_list argptr)
 161 {
 162     if ( wxLog::IsEnabled() ) {
 163         if ( wxLog::GetActiveTarget() != NULL && wxLog::GetVerbose() ) {
 164             wxLog::OnLog(wxLOG_Info,
 165                          wxString::FormatV(format, argptr), time(NULL));
 166         }
 167     }
 168 }
 169
 170 void wxDoLogVerbose(const wxString& format, ...)
 171 {
 172     va_list argptr;
 173     va_start(argptr, format);
 174     wxVLogVerbose(format, argptr);
 175     va_end(argptr);
 176 }
 177
 178 // debug functions
 179 #ifdef __WXDEBUG__
 180 #define IMPLEMENT_LOG_DEBUG_FUNCTION(level)                         \
 181   void wxVLog##level(const wxString& format, va_list argptr)        \
 182   {                                                                 \
 183     if ( wxLog::IsEnabled() ) {                                     \
 184       wxLog::OnLog(wxLOG_##level,                                   \
 185                    wxString::FormatV(format, argptr), time(NULL));  \
 186     }                                                               \
 187   }                                                                 \
 188                                                                     \
 189   void wxDoLog##level(const wxString& format, ...)                  \
 190   {                                                                 \
 191     va_list argptr;                                                 \
 192     va_start(argptr, format);                                       \
 193     wxVLog##level(format, argptr);                                  \
 194     va_end(argptr);                                                 \
 195   }
 196
 197   void wxVLogTrace(const wxString& mask, const wxString& format, va_list argptr)
 198   {
 199     if ( wxLog::IsEnabled() && wxLog::IsAllowedTraceMask(mask) ) {
 200       wxString msg;
 201       msg << _T("(") << mask << _T(") ") << wxString::FormatV(format, argptr);
 202
 203       wxLog::OnLog(wxLOG_Trace, msg, time(NULL));
 204     }
 205   }
 206
 207   void wxDoLogTrace(const wxString& mask, const wxString& format, ...)
 208   {
 209     va_list argptr;
 210     va_start(argptr, format);
 211     wxVLogTrace(mask, format, argptr);
 212     va_end(argptr);
 213   }
 214
 215   void wxVLogTrace(wxTraceMask mask, const wxString& format, va_list argptr)
 216   {
 217     // we check that all of mask bits are set in the current mask, so
 218     // that wxLogTrace(wxTraceRefCount | wxTraceOle) will only do something
 219     // if both bits are set.
 220     if ( wxLog::IsEnabled() && ((wxLog::GetTraceMask() & mask) == mask) ) {
 221       wxLog::OnLog(wxLOG_Trace, wxString::FormatV(format, argptr), time(NULL));
 222     }
 223   }
 224
 225   void wxDoLogTrace(wxTraceMask mask, const wxString& format, ...)
 226   {
 227     va_list argptr;
 228     va_start(argptr, format);
 229     wxVLogTrace(mask, format, argptr);
 230     va_end(argptr);
 231   }
 232
 233 #ifdef __WATCOMC__
 234   // workaround for http://bugzilla.openwatcom.org/show_bug.cgi?id=351
 235   void wxDoLogTrace(int mask, const wxString& format, ...)
 236   {
 237     va_list argptr;
 238     va_start(argptr, format);
 239     wxVLogTrace(mask, format, argptr);
 240     va_end(argptr);
 241   }
 242
 243   void wxDoLogTrace(const char *mask, const wxString& format, ...)
 244   {
 245     va_list argptr;
 246     va_start(argptr, format);
 247     wxVLogTrace(mask, format, argptr);
 248     va_end(argptr);
 249   }
 250
 251   void wxDoLogTrace(const wchar_t *mask, const wxString& format, ...)
 252   {
 253     va_list argptr;
 254     va_start(argptr, format);
 255     wxVLogTrace(mask, format, argptr);
 256     va_end(argptr);
 257   }
 258
 259   void wxVLogTrace(int mask, const wxString& format, va_list argptr)
 260     { wxVLogTrace((wxTraceMask)mask, format, argptr); }
 261   void wxVLogTrace(const char *mask, const wxString& format, va_list argptr)
 262     { wxVLogTrace(wxString(mask), format, argptr); }
 263   void wxVLogTrace(const wchar_t *mask, const wxString& format, va_list argptr)
 264     { wxVLogTrace(wxString(mask), format, argptr); }
 265 #endif // __WATCOMC__
 266
 267 #else // release
 268   #define IMPLEMENT_LOG_DEBUG_FUNCTION(level)
 269 #endif
 270
 271 IMPLEMENT_LOG_DEBUG_FUNCTION(Debug)
 272 IMPLEMENT_LOG_DEBUG_FUNCTION(Trace)
 273
 274 // wxLogSysError: one uses the last error code, for other  you must give it
 275 // explicitly
 276
 277 // return the system error message description
 278 static inline wxString wxLogSysErrorHelper(long err)
 279 {
 280     return wxString::Format(_(" (error %ld: %s)"), err, wxSysErrorMsg(err));
 281 }
 282
 283 void WXDLLEXPORT wxVLogSysError(const wxString& format, va_list argptr)
 284 {
 285     wxVLogSysError(wxSysErrorCode(), format, argptr);
 286 }
 287
 288 void WXDLLEXPORT wxDoLogSysError(const wxString& format, ...)
 289 {
 290     va_list argptr;
 291     va_start(argptr, format);
 292     wxVLogSysError(format, argptr);
 293     va_end(argptr);
 294 }
 295
 296 void WXDLLEXPORT wxVLogSysError(long err, const wxString& format, va_list argptr)
 297 {
 298     if ( wxLog::IsEnabled() ) {
 299         wxLog::OnLog(wxLOG_Error,
 300                      wxString::FormatV(format, argptr) + wxLogSysErrorHelper(err),
 301                      time(NULL));
 302     }
 303 }
 304
 305 void WXDLLEXPORT wxDoLogSysError(long lErrCode, const wxString& format, ...)
 306 {
 307     va_list argptr;
 308     va_start(argptr, format);
 309     wxVLogSysError(lErrCode, format, argptr);
 310     va_end(argptr);
 311 }
 312
 313 #ifdef __WATCOMC__
 314 // workaround for http://bugzilla.openwatcom.org/show_bug.cgi?id=351
 315 void WXDLLEXPORT wxDoLogSysError(unsigned long lErrCode, const wxString& format, ...)
 316 {
 317     va_list argptr;
 318     va_start(argptr, format);
 319     wxVLogSysError(lErrCode, format, argptr);
 320     va_end(argptr);
 321 }
 322
 323 void WXDLLEXPORT wxVLogSysError(unsigned long err, const wxString& format, va_list argptr)
 324     { wxVLogSysError((long)err, format, argptr); }
 325 #endif // __WATCOMC__
 326
 327 // ----------------------------------------------------------------------------
 328 // wxLog class implementation
 329 // ----------------------------------------------------------------------------
 330
 331 /* static */
 332 unsigned wxLog::DoLogNumberOfRepeats()
 333 {
 334     long retval = ms_prevCounter;
 335     wxLog *pLogger = GetActiveTarget();
 336     if ( pLogger && ms_prevCounter > 0 )
 337     {
 338         wxString msg;
 339 #if wxUSE_INTL
 340         msg.Printf(wxPLURAL("The previous message repeated once.",
 341                             "The previous message repeated %lu times.",
 342                             ms_prevCounter),
 343                    ms_prevCounter);
 344 #else
 345         msg.Printf(wxT("The previous message was repeated."));
 346 #endif
 347         ms_prevCounter = 0;
 348         ms_prevString.clear();
 349         pLogger->DoLog(ms_prevLevel, msg.c_str(), ms_prevTimeStamp);
 350     }
 351     return retval;
 352 }
 353
 354 wxLog::~wxLog()
 355 {
 356     if ( ms_prevCounter > 0 )
 357     {
 358         // looks like the repeat count has not been logged yet,
 359         // so let's do it now
 360         wxLog::DoLogNumberOfRepeats();
 361     }
 362 }
 363
 364 /* static */
 365 void wxLog::OnLog(wxLogLevel level, const wxChar *szString, time_t t)
 366 {
 367     if ( IsEnabled() && ms_logLevel >= level )
 368     {
 369         wxLog *pLogger = GetActiveTarget();
 370         if ( pLogger )
 371         {
 372             if ( GetRepetitionCounting() && ms_prevString == szString )
 373             {
 374                 ms_prevCounter++;
 375             }
 376             else
 377             {
 378                 if ( GetRepetitionCounting() )
 379                 {
 380                     DoLogNumberOfRepeats();
 381                 }
 382                 ms_prevString = szString;
 383                 ms_prevLevel = level;
 384                 ms_prevTimeStamp = t;
 385                 pLogger->DoLog(level, szString, t);
 386             }
 387         }
 388     }
 389 }
 390
 391 // deprecated function
 392 #if WXWIN_COMPATIBILITY_2_6
 393
 394 wxChar *wxLog::SetLogBuffer(wxChar * WXUNUSED(buf), size_t WXUNUSED(size))
 395 {
 396     return NULL;
 397 }
 398
 399 #endif // WXWIN_COMPATIBILITY_2_6
 400
 401 wxLog *wxLog::GetActiveTarget()
 402 {
 403     if ( ms_bAutoCreate && ms_pLogger == NULL ) {
 404         // prevent infinite recursion if someone calls wxLogXXX() from
 405         // wxApp::CreateLogTarget()
 406         static bool s_bInGetActiveTarget = false;
 407         if ( !s_bInGetActiveTarget ) {
 408             s_bInGetActiveTarget = true;
 409
 410             // ask the application to create a log target for us
 411             if ( wxTheApp != NULL )
 412                 ms_pLogger = wxTheApp->GetTraits()->CreateLogTarget();
 413             else
 414                 ms_pLogger = new wxLogStderr;
 415
 416             s_bInGetActiveTarget = false;
 417
 418             // do nothing if it fails - what can we do?
 419         }
 420     }
 421
 422     return ms_pLogger;
 423 }
 424
 425 wxLog *wxLog::SetActiveTarget(wxLog *pLogger)
 426 {
 427     if ( ms_pLogger != NULL ) {
 428         // flush the old messages before changing because otherwise they might
 429         // get lost later if this target is not restored
 430         ms_pLogger->Flush();
 431     }
 432
 433     wxLog *pOldLogger = ms_pLogger;
 434     ms_pLogger = pLogger;
 435
 436     return pOldLogger;
 437 }
 438
 439 void wxLog::DontCreateOnDemand()
 440 {
 441     ms_bAutoCreate = false;
 442
 443     // this is usually called at the end of the program and we assume that it
 444     // is *always* called at the end - so we free memory here to avoid false
 445     // memory leak reports from wxWin  memory tracking code
 446     ClearTraceMasks();
 447 }
 448
 449 void wxLog::RemoveTraceMask(const wxString& str)
 450 {
 451     int index = ms_aTraceMasks.Index(str);
 452     if ( index != wxNOT_FOUND )
 453         ms_aTraceMasks.RemoveAt((size_t)index);
 454 }
 455
 456 void wxLog::ClearTraceMasks()
 457 {
 458     ms_aTraceMasks.Clear();
 459 }
 460
 461 void wxLog::TimeStamp(wxString *str)
 462 {
 463 #if wxUSE_DATETIME
 464     if ( ms_timestamp )
 465     {
 466         wxChar buf[256];
 467         time_t timeNow;
 468         (void)time(&timeNow);
 469
 470         struct tm tm;
 471         wxStrftime(buf, WXSIZEOF(buf),
 472                     ms_timestamp, wxLocaltime_r(&timeNow, &tm));
 473
 474         str->Empty();
 475         *str << buf << wxT(": ");
 476     }
 477 #endif // wxUSE_DATETIME
 478 }
 479
 480 void wxLog::DoLog(wxLogLevel level, const wxChar *szString, time_t t)
 481 {
 482     switch ( level ) {
 483         case wxLOG_FatalError:
 484             DoLogString(wxString(_("Fatal error: ")) + szString, t);
 485             DoLogString(_("Program aborted."), t);
 486             Flush();
 487 #ifdef __WXWINCE__
 488             ExitThread(3);
 489 #else
 490             abort();
 491 #endif
 492             break;
 493
 494         case wxLOG_Error:
 495             DoLogString(wxString(_("Error: ")) + szString, t);
 496             break;
 497
 498         case wxLOG_Warning:
 499             DoLogString(wxString(_("Warning: ")) + szString, t);
 500             break;
 501
 502         case wxLOG_Info:
 503             if ( GetVerbose() )
 504         case wxLOG_Message:
 505         case wxLOG_Status:
 506         default:    // log unknown log levels too
 507                 DoLogString(szString, t);
 508             break;
 509
 510         case wxLOG_Trace:
 511         case wxLOG_Debug:
 512 #ifdef __WXDEBUG__
 513             {
 514                 wxString msg = level == wxLOG_Trace ? wxT("Trace: ")
 515                                                     : wxT("Debug: ");
 516                 msg << szString;
 517                 DoLogString(msg, t);
 518             }
 519 #endif // Debug
 520             break;
 521     }
 522 }
 523
 524 void wxLog::DoLogString(const wxChar *WXUNUSED(szString), time_t WXUNUSED(t))
 525 {
 526     wxFAIL_MSG(wxT("DoLogString must be overriden if it's called."));
 527 }
 528
 529 void wxLog::Flush()
 530 {
 531     // nothing to do here
 532 }
 533
 534 /*static*/ bool wxLog::IsAllowedTraceMask(const wxChar *mask)
 535 {
 536     for ( wxArrayString::iterator it = ms_aTraceMasks.begin(),
 537                                   en = ms_aTraceMasks.end();
 538          it != en; ++it )
 539         if ( *it == mask)
 540             return true;
 541     return false;
 542 }
 543
 544 // ----------------------------------------------------------------------------
 545 // wxLogBuffer implementation
 546 // ----------------------------------------------------------------------------
 547
 548 void wxLogBuffer::Flush()
 549 {
 550     if ( !m_str.empty() )
 551     {
 552         wxMessageOutputBest out;
 553         out.Printf(_T("%s"), m_str.c_str());
 554         m_str.clear();
 555     }
 556 }
 557
 558 void wxLogBuffer::DoLog(wxLogLevel level, const wxChar *szString, time_t t)
 559 {
 560     switch ( level )
 561     {
 562         case wxLOG_Trace:
 563         case wxLOG_Debug:
 564 #ifdef __WXDEBUG__
 565             // don't put debug messages in the buffer, we don't want to show
 566             // them to the user in a msg box, log them immediately
 567             {
 568                 wxString str;
 569                 TimeStamp(&str);
 570                 str += szString;
 571
 572                 wxMessageOutputDebug dbgout;
 573                 dbgout.Printf(_T("%s\n"), str.c_str());
 574             }
 575 #endif // __WXDEBUG__
 576             break;
 577
 578         default:
 579             wxLog::DoLog(level, szString, t);
 580     }
 581 }
 582
 583 void wxLogBuffer::DoLogString(const wxChar *szString, time_t WXUNUSED(t))
 584 {
 585     m_str << szString << _T("\n");
 586 }
 587
 588 // ----------------------------------------------------------------------------
 589 // wxLogStderr class implementation
 590 // ----------------------------------------------------------------------------
 591
 592 wxLogStderr::wxLogStderr(FILE *fp)
 593 {
 594     if ( fp == NULL )
 595         m_fp = stderr;
 596     else
 597         m_fp = fp;
 598 }
 599
 600 void wxLogStderr::DoLogString(const wxChar *szString, time_t WXUNUSED(t))
 601 {
 602     wxString str;
 603     TimeStamp(&str);
 604     str << szString;
 605
 606     wxFputs(str, m_fp);
 607     wxFputc(_T('\n'), m_fp);
 608     fflush(m_fp);
 609
 610     // under GUI systems such as Windows or Mac, programs usually don't have
 611     // stderr at all, so show the messages also somewhere else, typically in
 612     // the debugger window so that they go at least somewhere instead of being
 613     // simply lost
 614     if ( m_fp == stderr )
 615     {
 616         wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL;
 617         if ( traits && !traits->HasStderr() )
 618         {
 619             wxMessageOutputDebug dbgout;
 620             dbgout.Printf(_T("%s\n"), str.c_str());
 621         }
 622     }
 623 }
 624
 625 // ----------------------------------------------------------------------------
 626 // wxLogStream implementation
 627 // ----------------------------------------------------------------------------
 628
 629 #if wxUSE_STD_IOSTREAM
 630 #include "wx/ioswrap.h"
 631 wxLogStream::wxLogStream(wxSTD ostream *ostr)
 632 {
 633     if ( ostr == NULL )
 634         m_ostr = &wxSTD cerr;
 635     else
 636         m_ostr = ostr;
 637 }
 638
 639 void wxLogStream::DoLogString(const wxChar *szString, time_t WXUNUSED(t))
 640 {
 641     wxString str;
 642     TimeStamp(&str);
 643     (*m_ostr) << wxConvertWX2MB(str) << wxConvertWX2MB(szString) << wxSTD endl;
 644 }
 645 #endif // wxUSE_STD_IOSTREAM
 646
 647 // ----------------------------------------------------------------------------
 648 // wxLogChain
 649 // ----------------------------------------------------------------------------
 650
 651 wxLogChain::wxLogChain(wxLog *logger)
 652 {
 653     m_bPassMessages = true;
 654
 655     m_logNew = logger;
 656     m_logOld = wxLog::SetActiveTarget(this);
 657 }
 658
 659 wxLogChain::~wxLogChain()
 660 {
 661     delete m_logOld;
 662
 663     if ( m_logNew != this )
 664         delete m_logNew;
 665 }
 666
 667 void wxLogChain::SetLog(wxLog *logger)
 668 {
 669     if ( m_logNew != this )
 670         delete m_logNew;
 671
 672     m_logNew = logger;
 673 }
 674
 675 void wxLogChain::Flush()
 676 {
 677     if ( m_logOld )
 678         m_logOld->Flush();
 679
 680     // be careful to avoid infinite recursion
 681     if ( m_logNew && m_logNew != this )
 682         m_logNew->Flush();
 683 }
 684
 685 void wxLogChain::DoLog(wxLogLevel level, const wxChar *szString, time_t t)
 686 {
 687     // let the previous logger show it
 688     if ( m_logOld && IsPassingMessages() )
 689     {
 690         // bogus cast just to access protected DoLog
 691         ((wxLogChain *)m_logOld)->DoLog(level, szString, t);
 692     }
 693
 694     if ( m_logNew && m_logNew != this )
 695     {
 696         // as above...
 697         ((wxLogChain *)m_logNew)->DoLog(level, szString, t);
 698     }
 699 }
 700
 701 // ----------------------------------------------------------------------------
 702 // wxLogPassThrough
 703 // ----------------------------------------------------------------------------
 704
 705 #ifdef __VISUALC__
 706     // "'this' : used in base member initializer list" - so what?
 707     #pragma warning(disable:4355)
 708 #endif // VC++
 709
 710 wxLogPassThrough::wxLogPassThrough()
 711                 : wxLogChain(this)
 712 {
 713 }
 714
 715 #ifdef __VISUALC__
 716     #pragma warning(default:4355)
 717 #endif // VC++
 718
 719 // ============================================================================
 720 // Global functions/variables
 721 // ============================================================================
 722
 723 // ----------------------------------------------------------------------------
 724 // static variables
 725 // ----------------------------------------------------------------------------
 726
 727 bool            wxLog::ms_bRepetCounting = false;
 728 wxString        wxLog::ms_prevString;
 729 unsigned int    wxLog::ms_prevCounter = 0;
 730 time_t          wxLog::ms_prevTimeStamp= 0;
 731 wxLogLevel      wxLog::ms_prevLevel;
 732
 733 wxLog          *wxLog::ms_pLogger      = (wxLog *)NULL;
 734 bool            wxLog::ms_doLog        = true;
 735 bool            wxLog::ms_bAutoCreate  = true;
 736 bool            wxLog::ms_bVerbose     = false;
 737
 738 wxLogLevel      wxLog::ms_logLevel     = wxLOG_Max;  // log everything by default
 739
 740 size_t          wxLog::ms_suspendCount = 0;
 741
 742 const wxChar   *wxLog::ms_timestamp    = wxT("%X");  // time only, no date
 743
 744 wxTraceMask     wxLog::ms_ulTraceMask  = (wxTraceMask)0;
 745 wxArrayString   wxLog::ms_aTraceMasks;
 746
 747 // ----------------------------------------------------------------------------
 748 // stdout error logging helper
 749 // ----------------------------------------------------------------------------
 750
 751 // helper function: wraps the message and justifies it under given position
 752 // (looks more pretty on the terminal). Also adds newline at the end.
 753 //
 754 // TODO this is now disabled until I find a portable way of determining the
 755 //      terminal window size (ok, I found it but does anybody really cares?)
 756 #ifdef LOG_PRETTY_WRAP
 757 static void wxLogWrap(FILE *f, const char *pszPrefix, const char *psz)
 758 {
 759     size_t nMax = 80; // FIXME
 760     size_t nStart = strlen(pszPrefix);
 761     fputs(pszPrefix, f);
 762
 763     size_t n;
 764     while ( *psz != '\0' ) {
 765         for ( n = nStart; (n < nMax) && (*psz != '\0'); n++ )
 766             putc(*psz++, f);
 767
 768         // wrapped?
 769         if ( *psz != '\0' ) {
 770             /*putc('\n', f);*/
 771             for ( n = 0; n < nStart; n++ )
 772                 putc(' ', f);
 773
 774             // as we wrapped, squeeze all white space
 775             while ( isspace(*psz) )
 776                 psz++;
 777         }
 778     }
 779
 780     putc('\n', f);
 781 }
 782 #endif  //LOG_PRETTY_WRAP
 783
 784 // ----------------------------------------------------------------------------
 785 // error code/error message retrieval functions
 786 // ----------------------------------------------------------------------------
 787
 788 // get error code from syste
 789 unsigned long wxSysErrorCode()
 790 {
 791 #if defined(__WXMSW__) && !defined(__WXMICROWIN__)
 792     return ::GetLastError();
 793 #else   //Unix
 794     return errno;
 795 #endif  //Win/Unix
 796 }
 797
 798 // get error message from system
 799 const wxChar *wxSysErrorMsg(unsigned long nErrCode)
 800 {
 801     if ( nErrCode == 0 )
 802         nErrCode = wxSysErrorCode();
 803
 804 #if defined(__WXMSW__) && !defined(__WXMICROWIN__)
 805     static wxChar s_szBuf[1024];
 806
 807     // get error message from system
 808     LPVOID lpMsgBuf;
 809     if ( ::FormatMessage
 810          (
 811             FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
 812             NULL,
 813             nErrCode,
 814             MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
 815             (LPTSTR)&lpMsgBuf,
 816             0,
 817             NULL
 818          ) == 0 )
 819     {
 820         // if this happens, something is seriously wrong, so don't use _() here
 821         // for safety
 822         wxSprintf(s_szBuf, _T("unknown error %lx"), nErrCode);
 823         return s_szBuf;
 824     }
 825
 826
 827     // copy it to our buffer and free memory
 828     // Crashes on SmartPhone (FIXME)
 829 #if !defined(__SMARTPHONE__) /* of WinCE */
 830     if( lpMsgBuf != 0 )
 831     {
 832         wxStrncpy(s_szBuf, (const wxChar *)lpMsgBuf, WXSIZEOF(s_szBuf) - 1);
 833         s_szBuf[WXSIZEOF(s_szBuf) - 1] = wxT('\0');
 834
 835         LocalFree(lpMsgBuf);
 836
 837         // returned string is capitalized and ended with '\r\n' - bad
 838         s_szBuf[0] = (wxChar)wxTolower(s_szBuf[0]);
 839         size_t len = wxStrlen(s_szBuf);
 840         if ( len > 0 ) {
 841             // truncate string
 842             if ( s_szBuf[len - 2] == wxT('\r') )
 843                 s_szBuf[len - 2] = wxT('\0');
 844         }
 845     }
 846     else
 847 #endif // !__SMARTPHONE__
 848     {
 849         s_szBuf[0] = wxT('\0');
 850     }
 851
 852     return s_szBuf;
 853 #else // !__WXMSW__
 854     #if wxUSE_UNICODE
 855         static wchar_t s_wzBuf[1024];
 856         wxConvCurrent->MB2WC(s_wzBuf, strerror((int)nErrCode),
 857                              WXSIZEOF(s_wzBuf) - 1);
 858         return s_wzBuf;
 859     #else
 860         return strerror((int)nErrCode);
 861     #endif
 862 #endif  // __WXMSW__/!__WXMSW__
 863 }
 864
 865 #endif // wxUSE_LOG