src/common/log.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        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 license
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21   #pragma implementation "log.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28   #pragma hdrstop
  29 #endif
  30
  31 // wxWindows
  32 #ifndef WX_PRECOMP
  33     #include "wx/string.h"
  34     #include "wx/intl.h"
  35     #include "wx/app.h"
  36
  37     #if wxUSE_GUI
  38         #include "wx/window.h"
  39         #include "wx/msgdlg.h"
  40         #ifdef __WXMSW__
  41             #include "wx/msw/private.h"
  42         #endif
  43     #endif
  44 #endif //WX_PRECOMP
  45
  46 #include  "wx/file.h"
  47 #include  "wx/textfile.h"
  48 #include  "wx/utils.h"
  49 #include  "wx/wxchar.h"
  50 #include  "wx/log.h"
  51 #include  "wx/thread.h"
  52
  53 #if wxUSE_LOG
  54
  55 // other standard headers
  56 #include  <errno.h>
  57 #include  <stdlib.h>
  58 #include  <time.h>
  59
  60 #if defined(__WXMSW__)
  61   #include  "wx/msw/private.h"      // includes windows.h for OutputDebugString
  62 #endif
  63
  64 #if defined(__WXMAC__)
  65   #include  "wx/mac/private.h"  // includes mac headers
  66 #endif
  67
  68 // ----------------------------------------------------------------------------
  69 // non member functions
  70 // ----------------------------------------------------------------------------
  71
  72 // define this to enable wrapping of log messages
  73 //#define LOG_PRETTY_WRAP
  74
  75 #ifdef  LOG_PRETTY_WRAP
  76   static void wxLogWrap(FILE *f, const char *pszPrefix, const char *psz);
  77 #endif
  78
  79 // ============================================================================
  80 // implementation
  81 // ============================================================================
  82
  83 // ----------------------------------------------------------------------------
  84 // globals
  85 // ----------------------------------------------------------------------------
  86
  87 // log functions can't allocate memory (LogError("out of memory...") should
  88 // work!), so we use a static buffer for all log messages
  89 #define LOG_BUFFER_SIZE   (4096)
  90
  91 // static buffer for error messages
  92 static wxChar   s_szBufStatic[LOG_BUFFER_SIZE];
  93
  94 static wxChar  *s_szBuf     = s_szBufStatic;
  95 static size_t   s_szBufSize = WXSIZEOF( s_szBufStatic );
  96
  97 #if wxUSE_THREADS
  98
  99 // the critical section protecting the static buffer
 100 static wxCriticalSection gs_csLogBuf;
 101
 102 #endif // wxUSE_THREADS
 103
 104 // return true if we have a non NULL non disabled log target
 105 static inline bool IsLoggingEnabled()
 106 {
 107     return wxLog::IsEnabled() && (wxLog::GetActiveTarget() != NULL);
 108 }
 109
 110 // ----------------------------------------------------------------------------
 111 // implementation of Log functions
 112 //
 113 // NB: unfortunately we need all these distinct functions, we can't make them
 114 //     macros and not all compilers inline vararg functions.
 115 // ----------------------------------------------------------------------------
 116
 117 // generic log function
 118 void wxVLogGeneric(wxLogLevel level, const wxChar *szFormat, va_list argptr)
 119 {
 120     if ( IsLoggingEnabled() ) {
 121         wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
 122
 123         wxVsnprintf(s_szBuf, s_szBufSize, szFormat, argptr);
 124
 125         wxLog::OnLog(level, s_szBuf, time(NULL));
 126     }
 127 }
 128
 129 void wxLogGeneric(wxLogLevel level, const wxChar *szFormat, ...)
 130 {
 131     va_list argptr;
 132     va_start(argptr, szFormat);
 133     wxVLogGeneric(level, szFormat, argptr);
 134     va_end(argptr);
 135 }
 136
 137 #define IMPLEMENT_LOG_FUNCTION(level)                               \
 138   void wxVLog##level(const wxChar *szFormat, va_list argptr)        \
 139   {                                                                 \
 140     if ( IsLoggingEnabled() ) {                                     \
 141       wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);                      \
 142                                                                     \
 143       wxVsnprintf(s_szBuf, s_szBufSize, szFormat, argptr);    \
 144                                                                     \
 145       wxLog::OnLog(wxLOG_##level, s_szBuf, time(NULL));             \
 146     }                                                               \
 147   }                                                                 \
 148   void wxLog##level(const wxChar *szFormat, ...)                    \
 149   {                                                                 \
 150     va_list argptr;                                                 \
 151     va_start(argptr, szFormat);                                     \
 152     wxVLog##level(szFormat, argptr);                                \
 153     va_end(argptr);                                                 \
 154   }
 155
 156 IMPLEMENT_LOG_FUNCTION(Error)
 157 IMPLEMENT_LOG_FUNCTION(Warning)
 158 IMPLEMENT_LOG_FUNCTION(Message)
 159 IMPLEMENT_LOG_FUNCTION(Info)
 160 IMPLEMENT_LOG_FUNCTION(Status)
 161
 162 // fatal errors can't be suppressed nor handled by the custom log target and
 163 // always terminate the program
 164 void wxVLogFatalError(const wxChar *szFormat, va_list argptr)
 165 {
 166     wxVsnprintf(s_szBuf, s_szBufSize, szFormat, argptr);
 167
 168 #if wxUSE_GUI
 169     wxMessageBox(s_szBuf, _("Fatal Error"), wxID_OK | wxICON_STOP);
 170 #else
 171     fprintf(stderr, _("Fatal error: %s\n"), s_szBuf);
 172 #endif
 173
 174     abort();
 175 }
 176
 177 void wxLogFatalError(const wxChar *szFormat, ...)
 178 {
 179     va_list argptr;
 180     va_start(argptr, szFormat);
 181     wxVLogFatalError(szFormat, argptr);
 182     va_end(argptr);
 183 }
 184
 185 // same as info, but only if 'verbose' mode is on
 186 void wxVLogVerbose(const wxChar *szFormat, va_list argptr)
 187 {
 188     if ( IsLoggingEnabled() ) {
 189         wxLog *pLog = wxLog::GetActiveTarget();
 190         if ( pLog != NULL && pLog->GetVerbose() ) {
 191             wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
 192
 193             wxVsnprintf(s_szBuf, s_szBufSize, szFormat, argptr);
 194
 195             wxLog::OnLog(wxLOG_Info, s_szBuf, time(NULL));
 196         }
 197     }
 198 }
 199
 200 void wxLogVerbose(const wxChar *szFormat, ...)
 201 {
 202     va_list argptr;
 203     va_start(argptr, szFormat);
 204     wxVLogVerbose(szFormat, argptr);
 205     va_end(argptr);
 206 }
 207
 208 // debug functions
 209 #ifdef __WXDEBUG__
 210 #define IMPLEMENT_LOG_DEBUG_FUNCTION(level)                         \
 211   void wxVLog##level(const wxChar *szFormat, va_list argptr)        \
 212   {                                                                 \
 213     if ( IsLoggingEnabled() ) {                                     \
 214       wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);                      \
 215                                                                     \
 216       wxVsnprintf(s_szBuf, s_szBufSize, szFormat, argptr);    \
 217                                                                     \
 218       wxLog::OnLog(wxLOG_##level, s_szBuf, time(NULL));             \
 219     }                                                               \
 220   }                                                                 \
 221   void wxLog##level(const wxChar *szFormat, ...)                    \
 222   {                                                                 \
 223     va_list argptr;                                                 \
 224     va_start(argptr, szFormat);                                     \
 225     wxVLog##level(szFormat, argptr);                                \
 226     va_end(argptr);                                                 \
 227   }
 228
 229   void wxVLogTrace(const wxChar *mask, const wxChar *szFormat, va_list argptr)
 230   {
 231     if ( IsLoggingEnabled() && wxLog::IsAllowedTraceMask(mask) ) {
 232       wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
 233
 234       wxChar *p = s_szBuf;
 235       size_t len = s_szBufSize;
 236       wxStrncpy(s_szBuf, _T("("), len);
 237       len -= 1; // strlen("(")
 238       p += 1;
 239       wxStrncat(p, mask, len);
 240       size_t lenMask = wxStrlen(mask);
 241       len -= lenMask;
 242       p += lenMask;
 243
 244       wxStrncat(p, _T(") "), len);
 245       len -= 2;
 246       p += 2;
 247
 248       wxVsnprintf(p, len, szFormat, argptr);
 249
 250       wxLog::OnLog(wxLOG_Trace, s_szBuf, time(NULL));
 251     }
 252   }
 253
 254   void wxLogTrace(const wxChar *mask, const wxChar *szFormat, ...)
 255   {
 256     va_list argptr;
 257     va_start(argptr, szFormat);
 258     wxVLogTrace(mask, szFormat, argptr);
 259     va_end(argptr);
 260   }
 261
 262   void wxVLogTrace(wxTraceMask mask, const wxChar *szFormat, va_list argptr)
 263   {
 264     // we check that all of mask bits are set in the current mask, so
 265     // that wxLogTrace(wxTraceRefCount | wxTraceOle) will only do something
 266     // if both bits are set.
 267     if ( IsLoggingEnabled() && ((wxLog::GetTraceMask() & mask) == mask) ) {
 268       wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
 269
 270       wxVsnprintf(s_szBuf, s_szBufSize, szFormat, argptr);
 271
 272       wxLog::OnLog(wxLOG_Trace, s_szBuf, time(NULL));
 273     }
 274   }
 275
 276   void wxLogTrace(wxTraceMask mask, const wxChar *szFormat, ...)
 277   {
 278     va_list argptr;
 279     va_start(argptr, szFormat);
 280     wxVLogTrace(mask, szFormat, argptr);
 281     va_end(argptr);
 282   }
 283
 284 #else // release
 285   #define IMPLEMENT_LOG_DEBUG_FUNCTION(level)
 286 #endif
 287
 288 IMPLEMENT_LOG_DEBUG_FUNCTION(Debug)
 289 IMPLEMENT_LOG_DEBUG_FUNCTION(Trace)
 290
 291 // wxLogSysError: one uses the last error code, for other  you must give it
 292 // explicitly
 293
 294 // common part of both wxLogSysError
 295 void wxLogSysErrorHelper(long lErrCode)
 296 {
 297     wxChar szErrMsg[LOG_BUFFER_SIZE / 2];
 298     wxSnprintf(szErrMsg, WXSIZEOF(szErrMsg),
 299                _(" (error %ld: %s)"), lErrCode, wxSysErrorMsg(lErrCode));
 300     wxStrncat(s_szBuf, szErrMsg, s_szBufSize - wxStrlen(s_szBuf));
 301
 302     wxLog::OnLog(wxLOG_Error, s_szBuf, time(NULL));
 303 }
 304
 305 void WXDLLEXPORT wxVLogSysError(const wxChar *szFormat, va_list argptr)
 306 {
 307     if ( IsLoggingEnabled() ) {
 308         wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
 309
 310         wxVsnprintf(s_szBuf, s_szBufSize, szFormat, argptr);
 311
 312         wxLogSysErrorHelper(wxSysErrorCode());
 313     }
 314 }
 315
 316 void WXDLLEXPORT wxLogSysError(const wxChar *szFormat, ...)
 317 {
 318     va_list argptr;
 319     va_start(argptr, szFormat);
 320     wxVLogSysError(szFormat, argptr);
 321     va_end(argptr);
 322 }
 323
 324 void WXDLLEXPORT wxVLogSysError(long lErrCode, const wxChar *szFormat, va_list argptr)
 325 {
 326     if ( IsLoggingEnabled() ) {
 327         wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
 328
 329         wxVsnprintf(s_szBuf, s_szBufSize, szFormat, argptr);
 330
 331         wxLogSysErrorHelper(lErrCode);
 332     }
 333 }
 334
 335 void WXDLLEXPORT wxLogSysError(long lErrCode, const wxChar *szFormat, ...)
 336 {
 337     va_list argptr;
 338     va_start(argptr, szFormat);
 339     wxVLogSysError(lErrCode, szFormat, argptr);
 340     va_end(argptr);
 341 }
 342
 343 // ----------------------------------------------------------------------------
 344 // wxLog class implementation
 345 // ----------------------------------------------------------------------------
 346
 347 wxLog::wxLog()
 348 {
 349     m_bHasMessages = FALSE;
 350 }
 351
 352 wxChar *wxLog::SetLogBuffer( wxChar *buf, size_t size)
 353 {
 354     wxChar *oldbuf = s_szBuf;
 355
 356     if( buf == 0 )
 357     {
 358         s_szBuf = s_szBufStatic;
 359         s_szBufSize = WXSIZEOF( s_szBufStatic );
 360     }
 361     else
 362     {
 363         s_szBuf = buf;
 364         s_szBufSize = size;
 365     }
 366
 367     return (oldbuf == s_szBufStatic ) ? 0 : oldbuf;
 368 }
 369
 370 wxLog *wxLog::GetActiveTarget()
 371 {
 372     if ( ms_bAutoCreate && ms_pLogger == NULL ) {
 373         // prevent infinite recursion if someone calls wxLogXXX() from
 374         // wxApp::CreateLogTarget()
 375         static bool s_bInGetActiveTarget = FALSE;
 376         if ( !s_bInGetActiveTarget ) {
 377             s_bInGetActiveTarget = TRUE;
 378
 379             // ask the application to create a log target for us
 380             if ( wxTheApp != NULL )
 381                 ms_pLogger = wxTheApp->CreateLogTarget();
 382             else
 383                 ms_pLogger = new wxLogStderr;
 384
 385             s_bInGetActiveTarget = FALSE;
 386
 387             // do nothing if it fails - what can we do?
 388         }
 389     }
 390
 391     return ms_pLogger;
 392 }
 393
 394 wxLog *wxLog::SetActiveTarget(wxLog *pLogger)
 395 {
 396     if ( ms_pLogger != NULL ) {
 397         // flush the old messages before changing because otherwise they might
 398         // get lost later if this target is not restored
 399         ms_pLogger->Flush();
 400     }
 401
 402     wxLog *pOldLogger = ms_pLogger;
 403     ms_pLogger = pLogger;
 404
 405     return pOldLogger;
 406 }
 407
 408 void wxLog::DontCreateOnDemand()
 409 {
 410     ms_bAutoCreate = FALSE;
 411
 412     // this is usually called at the end of the program and we assume that it
 413     // is *always* called at the end - so we free memory here to avoid false
 414     // memory leak reports from wxWin  memory tracking code
 415     ClearTraceMasks();
 416 }
 417
 418 void wxLog::RemoveTraceMask(const wxString& str)
 419 {
 420     int index = ms_aTraceMasks.Index(str);
 421     if ( index != wxNOT_FOUND )
 422         ms_aTraceMasks.Remove((size_t)index);
 423 }
 424
 425 void wxLog::ClearTraceMasks()
 426 {
 427     ms_aTraceMasks.Clear();
 428 }
 429
 430 void wxLog::TimeStamp(wxString *str)
 431 {
 432     if ( ms_timestamp )
 433     {
 434         wxChar buf[256];
 435         time_t timeNow;
 436         (void)time(&timeNow);
 437         wxStrftime(buf, WXSIZEOF(buf), ms_timestamp, localtime(&timeNow));
 438
 439         str->Empty();
 440         *str << buf << wxT(": ");
 441     }
 442 }
 443
 444 void wxLog::DoLog(wxLogLevel level, const wxChar *szString, time_t t)
 445 {
 446     switch ( level ) {
 447         case wxLOG_FatalError:
 448             DoLogString(wxString(_("Fatal error: ")) + szString, t);
 449             DoLogString(_("Program aborted."), t);
 450             Flush();
 451             abort();
 452             break;
 453
 454         case wxLOG_Error:
 455             DoLogString(wxString(_("Error: ")) + szString, t);
 456             break;
 457
 458         case wxLOG_Warning:
 459             DoLogString(wxString(_("Warning: ")) + szString, t);
 460             break;
 461
 462         case wxLOG_Info:
 463             if ( GetVerbose() )
 464         case wxLOG_Message:
 465         case wxLOG_Status:
 466         default:    // log unknown log levels too
 467                 DoLogString(szString, t);
 468             break;
 469
 470         case wxLOG_Trace:
 471         case wxLOG_Debug:
 472 #ifdef __WXDEBUG__
 473             {
 474                 wxString msg = level == wxLOG_Trace ? wxT("Trace: ")
 475                                                     : wxT("Debug: ");
 476                 msg << szString;
 477                 DoLogString(msg, t);
 478             }
 479 #endif // Debug
 480             break;
 481     }
 482 }
 483
 484 void wxLog::DoLogString(const wxChar *WXUNUSED(szString), time_t WXUNUSED(t))
 485 {
 486     wxFAIL_MSG(wxT("DoLogString must be overriden if it's called."));
 487 }
 488
 489 void wxLog::Flush()
 490 {
 491     // remember that we don't have any more messages to show
 492     m_bHasMessages = FALSE;
 493 }
 494
 495 // ----------------------------------------------------------------------------
 496 // wxLogStderr class implementation
 497 // ----------------------------------------------------------------------------
 498
 499 wxLogStderr::wxLogStderr(FILE *fp)
 500 {
 501     if ( fp == NULL )
 502         m_fp = stderr;
 503     else
 504         m_fp = fp;
 505 }
 506
 507 #if defined(__WXMAC__) && !defined(__DARWIN__) && (__MWERKS__ > 0x5300)
 508
 509 #if !TARGET_API_MAC_CARBON
 510 // MetroNub stuff doesn't seem to work in CodeWarrior 5.3 Carbon builds...
 511
 512 #ifndef __MetroNubUtils__
 513 #include "MetroNubUtils.h"
 514 #endif
 515
 516 #ifdef __cplusplus
 517     extern "C" {
 518 #endif
 519
 520 #ifndef __GESTALT__
 521 #include <Gestalt.h>
 522 #endif
 523
 524 #ifndef true
 525 #define true 1
 526 #endif
 527
 528 #ifndef false
 529 #define false 0
 530 #endif
 531
 532 #if TARGET_API_MAC_CARBON
 533
 534     #include <CodeFragments.h>
 535
 536     EXTERN_API_C( long )
 537     CallUniversalProc(UniversalProcPtr theProcPtr, ProcInfoType procInfo, ...);
 538
 539     ProcPtr gCallUniversalProc_Proc = NULL;
 540
 541 #endif
 542
 543 static MetroNubUserEntryBlock*    gMetroNubEntry = NULL;
 544
 545 static long fRunOnce = false;
 546
 547 Boolean IsCompatibleVersion(short inVersion);
 548
 549 /* ---------------------------------------------------------------------------
 550         IsCompatibleVersion
 551    --------------------------------------------------------------------------- */
 552
 553 Boolean IsCompatibleVersion(short inVersion)
 554 {
 555     Boolean result = false;
 556
 557     if (fRunOnce)
 558     {
 559         MetroNubUserEntryBlock* block = (MetroNubUserEntryBlock *)result;
 560
 561         result = (inVersion <= block->apiHiVersion);
 562     }
 563
 564     return result;
 565 }
 566
 567 /* ---------------------------------------------------------------------------
 568         IsMetroNubInstalled
 569    --------------------------------------------------------------------------- */
 570
 571 Boolean IsMetroNubInstalled()
 572 {
 573     if (!fRunOnce)
 574     {
 575         long result, value;
 576
 577         fRunOnce = true;
 578         gMetroNubEntry = NULL;
 579
 580         if (Gestalt(gestaltSystemVersion, &value) == noErr && value < 0x1000)
 581         {
 582             /* look for MetroNub's Gestalt selector */
 583             if (Gestalt(kMetroNubUserSignature, &result) == noErr)
 584             {
 585
 586             #if TARGET_API_MAC_CARBON
 587                 if (gCallUniversalProc_Proc == NULL)
 588                 {
 589                     CFragConnectionID   connectionID;
 590                     Ptr                 mainAddress;
 591                     Str255              errorString;
 592                     ProcPtr             symbolAddress;
 593                     OSErr               err;
 594                     CFragSymbolClass    symbolClass;
 595
 596                     symbolAddress = NULL;
 597                     err = GetSharedLibrary("\pInterfaceLib", kPowerPCCFragArch, kFindCFrag,
 598                                            &connectionID, &mainAddress, errorString);
 599
 600                     if (err != noErr)
 601                     {
 602                         gCallUniversalProc_Proc = NULL;
 603                         goto end;
 604                     }
 605
 606                     err = FindSymbol(connectionID, "\pCallUniversalProc",
 607                                     (Ptr *) &gCallUniversalProc_Proc, &symbolClass);
 608
 609                     if (err != noErr)
 610                     {
 611                         gCallUniversalProc_Proc = NULL;
 612                         goto end;
 613                     }
 614                 }
 615             #endif
 616
 617                 {
 618                     MetroNubUserEntryBlock* block = (MetroNubUserEntryBlock *)result;
 619
 620                     /* make sure the version of the API is compatible */
 621                     if (block->apiLowVersion <= kMetroNubUserAPIVersion &&
 622                         kMetroNubUserAPIVersion <= block->apiHiVersion)
 623                         gMetroNubEntry = block;        /* success! */
 624                 }
 625
 626             }
 627         }
 628     }
 629
 630 end:
 631
 632 #if TARGET_API_MAC_CARBON
 633     return (gMetroNubEntry != NULL && gCallUniversalProc_Proc != NULL);
 634 #else
 635     return (gMetroNubEntry != NULL);
 636 #endif
 637 }
 638
 639 /* ---------------------------------------------------------------------------
 640         IsMWDebuggerRunning                                            [v1 API]
 641    --------------------------------------------------------------------------- */
 642
 643 Boolean IsMWDebuggerRunning()
 644 {
 645     if (IsMetroNubInstalled())
 646         return CallIsDebuggerRunningProc(gMetroNubEntry->isDebuggerRunning);
 647     else
 648         return false;
 649 }
 650
 651 /* ---------------------------------------------------------------------------
 652         AmIBeingMWDebugged                                            [v1 API]
 653    --------------------------------------------------------------------------- */
 654
 655 Boolean AmIBeingMWDebugged()
 656 {
 657     if (IsMetroNubInstalled())
 658         return CallAmIBeingDebuggedProc(gMetroNubEntry->amIBeingDebugged);
 659     else
 660         return false;
 661 }
 662
 663 /* ---------------------------------------------------------------------------
 664         UserSetWatchPoint                                            [v2 API]
 665    --------------------------------------------------------------------------- */
 666
 667 OSErr UserSetWatchPoint (Ptr address, long length, WatchPointIDT* watchPointID)
 668 {
 669     if (IsMetroNubInstalled() && IsCompatibleVersion(kMetroNubUserAPIVersion))
 670         return CallUserSetWatchPointProc(gMetroNubEntry->userSetWatchPoint,
 671                                          address, length, watchPointID);
 672     else
 673         return errProcessIsNotClient;
 674 }
 675
 676 /* ---------------------------------------------------------------------------
 677         ClearWatchPoint                                                [v2 API]
 678    --------------------------------------------------------------------------- */
 679
 680 OSErr ClearWatchPoint (WatchPointIDT watchPointID)
 681 {
 682     if (IsMetroNubInstalled() && IsCompatibleVersion(kMetroNubUserAPIVersion))
 683         return CallClearWatchPointProc(gMetroNubEntry->clearWatchPoint, watchPointID);
 684     else
 685         return errProcessIsNotClient;
 686 }
 687
 688 #ifdef __cplusplus
 689     }
 690 #endif
 691
 692 #endif // !TARGET_API_MAC_CARBON
 693
 694 #endif // defined(__WXMAC__) && !defined(__DARWIN__) && (__MWERKS__ > 0x5300)
 695
 696 void wxLogStderr::DoLogString(const wxChar *szString, time_t WXUNUSED(t))
 697 {
 698     wxString str;
 699     TimeStamp(&str);
 700     str << szString;
 701
 702     fputs(str.mb_str(), m_fp);
 703     fputc(_T('\n'), m_fp);
 704     fflush(m_fp);
 705
 706     // under Windows, programs usually don't have stderr at all, so show the
 707     // messages also under debugger - unless it's a console program
 708 #if defined(__WXMSW__) && wxUSE_GUI && !defined(__WXMICROWIN__)
 709     str += wxT("\r\n") ;
 710     OutputDebugString(str.c_str());
 711 #endif // MSW
 712 #if defined(__WXMAC__) && !defined(__DARWIN__) && wxUSE_GUI
 713     Str255 pstr ;
 714     strcpy( (char*) pstr , str.c_str() ) ;
 715     strcat( (char*) pstr , ";g" ) ;
 716     c2pstr( (char*) pstr ) ;
 717
 718     Boolean running = false ;
 719
 720 #if !TARGET_API_MAC_CARBON && (__MWERKS__ > 0x5300)
 721
 722     if ( IsMWDebuggerRunning() && AmIBeingMWDebugged() )
 723     {
 724         running = true ;
 725     }
 726
 727 #endif
 728
 729     if (running)
 730     {
 731 #ifdef __powerc
 732         DebugStr(pstr);
 733 #else
 734         SysBreakStr(pstr);
 735 #endif
 736     }
 737 #endif // Mac
 738 }
 739
 740 // ----------------------------------------------------------------------------
 741 // wxLogStream implementation
 742 // ----------------------------------------------------------------------------
 743
 744 #if wxUSE_STD_IOSTREAM
 745 wxLogStream::wxLogStream(wxSTD ostream *ostr)
 746 {
 747     if ( ostr == NULL )
 748         m_ostr = &wxSTD cerr;
 749     else
 750         m_ostr = ostr;
 751 }
 752
 753 void wxLogStream::DoLogString(const wxChar *szString, time_t WXUNUSED(t))
 754 {
 755     wxString str;
 756     TimeStamp(&str);
 757     (*m_ostr) << str << wxConvertWX2MB(szString) << wxSTD endl;
 758 }
 759 #endif // wxUSE_STD_IOSTREAM
 760
 761 // ----------------------------------------------------------------------------
 762 // wxLogChain
 763 // ----------------------------------------------------------------------------
 764
 765 wxLogChain::wxLogChain(wxLog *logger)
 766 {
 767     m_logNew = logger;
 768     m_logOld = wxLog::SetActiveTarget(this);
 769 }
 770
 771 void wxLogChain::SetLog(wxLog *logger)
 772 {
 773     if ( m_logNew != this )
 774         delete m_logNew;
 775
 776     wxLog::SetActiveTarget(logger);
 777
 778     m_logNew = logger;
 779 }
 780
 781 void wxLogChain::Flush()
 782 {
 783     if ( m_logOld )
 784         m_logOld->Flush();
 785
 786     // be careful to avoid inifinite recursion
 787     if ( m_logNew && m_logNew != this )
 788         m_logNew->Flush();
 789 }
 790
 791 void wxLogChain::DoLog(wxLogLevel level, const wxChar *szString, time_t t)
 792 {
 793     // let the previous logger show it
 794     if ( m_logOld && IsPassingMessages() )
 795     {
 796         // bogus cast just to access protected DoLog
 797         ((wxLogChain *)m_logOld)->DoLog(level, szString, t);
 798     }
 799
 800     if ( m_logNew && m_logNew != this )
 801     {
 802         // as above...
 803         ((wxLogChain *)m_logNew)->DoLog(level, szString, t);
 804     }
 805 }
 806
 807 // ----------------------------------------------------------------------------
 808 // wxLogPassThrough
 809 // ----------------------------------------------------------------------------
 810
 811 #ifdef __VISUALC__
 812     // "'this' : used in base member initializer list" - so what?
 813     #pragma warning(disable:4355)
 814 #endif // VC++
 815
 816 wxLogPassThrough::wxLogPassThrough()
 817                 : wxLogChain(this)
 818 {
 819 }
 820
 821 #ifdef __VISUALC__
 822     #pragma warning(default:4355)
 823 #endif // VC++
 824
 825 // ============================================================================
 826 // Global functions/variables
 827 // ============================================================================
 828
 829 // ----------------------------------------------------------------------------
 830 // static variables
 831 // ----------------------------------------------------------------------------
 832
 833 wxLog          *wxLog::ms_pLogger      = (wxLog *)NULL;
 834 bool            wxLog::ms_doLog        = TRUE;
 835 bool            wxLog::ms_bAutoCreate  = TRUE;
 836 bool            wxLog::ms_bVerbose     = FALSE;
 837
 838 size_t          wxLog::ms_suspendCount = 0;
 839
 840 #if wxUSE_GUI
 841     const wxChar *wxLog::ms_timestamp  = wxT("%X");  // time only, no date
 842 #else
 843     const wxChar *wxLog::ms_timestamp  = NULL;       // save space
 844 #endif
 845
 846 wxTraceMask     wxLog::ms_ulTraceMask  = (wxTraceMask)0;
 847 wxArrayString   wxLog::ms_aTraceMasks;
 848
 849 // ----------------------------------------------------------------------------
 850 // stdout error logging helper
 851 // ----------------------------------------------------------------------------
 852
 853 // helper function: wraps the message and justifies it under given position
 854 // (looks more pretty on the terminal). Also adds newline at the end.
 855 //
 856 // TODO this is now disabled until I find a portable way of determining the
 857 //      terminal window size (ok, I found it but does anybody really cares?)
 858 #ifdef LOG_PRETTY_WRAP
 859 static void wxLogWrap(FILE *f, const char *pszPrefix, const char *psz)
 860 {
 861     size_t nMax = 80; // FIXME
 862     size_t nStart = strlen(pszPrefix);
 863     fputs(pszPrefix, f);
 864
 865     size_t n;
 866     while ( *psz != '\0' ) {
 867         for ( n = nStart; (n < nMax) && (*psz != '\0'); n++ )
 868             putc(*psz++, f);
 869
 870         // wrapped?
 871         if ( *psz != '\0' ) {
 872             /*putc('\n', f);*/
 873             for ( n = 0; n < nStart; n++ )
 874                 putc(' ', f);
 875
 876             // as we wrapped, squeeze all white space
 877             while ( isspace(*psz) )
 878                 psz++;
 879         }
 880     }
 881
 882     putc('\n', f);
 883 }
 884 #endif  //LOG_PRETTY_WRAP
 885
 886 // ----------------------------------------------------------------------------
 887 // error code/error message retrieval functions
 888 // ----------------------------------------------------------------------------
 889
 890 // get error code from syste
 891 unsigned long wxSysErrorCode()
 892 {
 893 #if defined(__WXMSW__) && !defined(__WXMICROWIN__)
 894 #ifdef  __WIN32__
 895     return ::GetLastError();
 896 #else   //WIN16
 897     // TODO what to do on Windows 3.1?
 898     return 0;
 899 #endif  //WIN16/32
 900 #else   //Unix
 901     return errno;
 902 #endif  //Win/Unix
 903 }
 904
 905 // get error message from system
 906 const wxChar *wxSysErrorMsg(unsigned long nErrCode)
 907 {
 908     if ( nErrCode == 0 )
 909         nErrCode = wxSysErrorCode();
 910
 911 #if defined(__WXMSW__) && !defined(__WXMICROWIN__)
 912 #ifdef  __WIN32__
 913     static wxChar s_szBuf[LOG_BUFFER_SIZE / 2];
 914
 915     // get error message from system
 916     LPVOID lpMsgBuf;
 917     FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
 918             NULL, nErrCode,
 919             MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
 920             (LPTSTR)&lpMsgBuf,
 921             0, NULL);
 922
 923     // copy it to our buffer and free memory
 924     if( lpMsgBuf != 0 ) {
 925         wxStrncpy(s_szBuf, (const wxChar *)lpMsgBuf, WXSIZEOF(s_szBuf) - 1);
 926         s_szBuf[WXSIZEOF(s_szBuf) - 1] = wxT('\0');
 927
 928         LocalFree(lpMsgBuf);
 929
 930         // returned string is capitalized and ended with '\r\n' - bad
 931         s_szBuf[0] = (wxChar)wxTolower(s_szBuf[0]);
 932         size_t len = wxStrlen(s_szBuf);
 933         if ( len > 0 ) {
 934             // truncate string
 935             if ( s_szBuf[len - 2] == wxT('\r') )
 936                 s_szBuf[len - 2] = wxT('\0');
 937         }
 938     }
 939     else {
 940         s_szBuf[0] = wxT('\0');
 941     }
 942
 943     return s_szBuf;
 944 #else   //Win16
 945     // TODO
 946     return NULL;
 947 #endif // Win16/32
 948 #else   // Unix
 949 #if wxUSE_UNICODE
 950     static wxChar s_szBuf[LOG_BUFFER_SIZE / 2];
 951     wxConvCurrent->MB2WC(s_szBuf, strerror(nErrCode), WXSIZEOF(s_szBuf) -1);
 952     return s_szBuf;
 953 #else
 954     return strerror((int)nErrCode);
 955 #endif
 956 #endif  // Win/Unix
 957 }
 958
 959 #endif //wxUSE_LOG
 960
 961 // vi:sts=4:sw=4:et