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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 licence
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 #if wxUSE_LOG
32
33 // wxWindows
34 #ifndef WX_PRECOMP
35 #include "wx/app.h"
36 #include "wx/arrstr.h"
37 #include "wx/intl.h"
38 #include "wx/string.h"
39 #endif //WX_PRECOMP
40
41 #include "wx/apptrait.h"
42 #include "wx/file.h"
43 #include "wx/log.h"
44 #include "wx/msgout.h"
45 #include "wx/textfile.h"
46 #include "wx/thread.h"
47 #include "wx/utils.h"
48 #include "wx/wxchar.h"
49
50 // other standard headers
51 #ifndef __WXWINCE__
52 #include <errno.h>
53 #endif
54
55 #include <stdlib.h>
56
57 #ifndef __WXWINCE__
58 #include <time.h>
59 #else
60 #include "wx/msw/wince/time.h"
61 #endif
62
63 #if defined(__WINDOWS__)
64 #include "wx/msw/private.h" // includes windows.h
65 #endif
66
67 // ----------------------------------------------------------------------------
68 // non member functions
69 // ----------------------------------------------------------------------------
70
71 // define this to enable wrapping of log messages
72 //#define LOG_PRETTY_WRAP
73
74 #ifdef LOG_PRETTY_WRAP
75 static void wxLogWrap(FILE *f, const char *pszPrefix, const char *psz);
76 #endif
77
78 // ============================================================================
79 // implementation
80 // ============================================================================
81
82 // ----------------------------------------------------------------------------
83 // globals
84 // ----------------------------------------------------------------------------
85
86 // log functions can't allocate memory (LogError("out of memory...") should
87 // work!), so we use a static buffer for all log messages
88 #define LOG_BUFFER_SIZE (4096)
89
90 // static buffer for error messages
91 static wxChar s_szBufStatic[LOG_BUFFER_SIZE];
92
93 static wxChar *s_szBuf = s_szBufStatic;
94 static size_t s_szBufSize = WXSIZEOF( s_szBufStatic );
95
96 #if wxUSE_THREADS
97
98 // the critical section protecting the static buffer
99 static wxCriticalSection gs_csLogBuf;
100
101 #endif // wxUSE_THREADS
102
103 // return true if we have a non NULL non disabled log target
104 static inline bool IsLoggingEnabled()
105 {
106 return wxLog::IsEnabled() && (wxLog::GetActiveTarget() != NULL);
107 }
108
109 // ----------------------------------------------------------------------------
110 // implementation of Log functions
111 //
112 // NB: unfortunately we need all these distinct functions, we can't make them
113 // macros and not all compilers inline vararg functions.
114 // ----------------------------------------------------------------------------
115
116 // wrapper for wxVsnprintf(s_szBuf) which always NULL-terminates it
117 static inline void PrintfInLogBug(const wxChar *szFormat, va_list argptr)
118 {
119 if ( wxVsnprintf(s_szBuf, s_szBufSize, szFormat, argptr) < 0 )
120 {
121 // must NUL-terminate it manually
122 s_szBuf[s_szBufSize - 1] = _T('\0');
123 }
124 //else: NUL-terminated by vsnprintf()
125 }
126
127 // generic log function
128 void wxVLogGeneric(wxLogLevel level, const wxChar *szFormat, va_list argptr)
129 {
130 if ( IsLoggingEnabled() ) {
131 wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
132
133 PrintfInLogBug(szFormat, argptr);
134
135 wxLog::OnLog(level, s_szBuf, time(NULL));
136 }
137 }
138
139 void wxLogGeneric(wxLogLevel level, const wxChar *szFormat, ...)
140 {
141 va_list argptr;
142 va_start(argptr, szFormat);
143 wxVLogGeneric(level, szFormat, argptr);
144 va_end(argptr);
145 }
146
147 #define IMPLEMENT_LOG_FUNCTION(level) \
148 void wxVLog##level(const wxChar *szFormat, va_list argptr) \
149 { \
150 if ( IsLoggingEnabled() ) { \
151 wxCRIT_SECT_LOCKER(locker, gs_csLogBuf); \
152 \
153 PrintfInLogBug(szFormat, argptr); \
154 \
155 wxLog::OnLog(wxLOG_##level, s_szBuf, time(NULL)); \
156 } \
157 } \
158 \
159 void wxLog##level(const wxChar *szFormat, ...) \
160 { \
161 va_list argptr; \
162 va_start(argptr, szFormat); \
163 wxVLog##level(szFormat, argptr); \
164 va_end(argptr); \
165 }
166
167 IMPLEMENT_LOG_FUNCTION(Error)
168 IMPLEMENT_LOG_FUNCTION(Warning)
169 IMPLEMENT_LOG_FUNCTION(Message)
170 IMPLEMENT_LOG_FUNCTION(Info)
171 IMPLEMENT_LOG_FUNCTION(Status)
172
173 void wxSafeShowMessage(const wxString& title, const wxString& text)
174 {
175 #ifdef __WINDOWS__
176 ::MessageBox(NULL, text, title, MB_OK | MB_ICONSTOP);
177 #else
178 wxFprintf(stderr, _T("%s: %s\n"), title.c_str(), text.c_str());
179 #endif
180 }
181
182 // fatal errors can't be suppressed nor handled by the custom log target and
183 // always terminate the program
184 void wxVLogFatalError(const wxChar *szFormat, va_list argptr)
185 {
186 wxVsnprintf(s_szBuf, s_szBufSize, szFormat, argptr);
187
188 wxSafeShowMessage(_T("Fatal Error"), s_szBuf);
189
190 #ifdef __WXWINCE__
191 ExitThread(3);
192 #else
193 abort();
194 #endif
195 }
196
197 void wxLogFatalError(const wxChar *szFormat, ...)
198 {
199 va_list argptr;
200 va_start(argptr, szFormat);
201 wxVLogFatalError(szFormat, argptr);
202 va_end(argptr);
203 }
204
205 // same as info, but only if 'verbose' mode is on
206 void wxVLogVerbose(const wxChar *szFormat, va_list argptr)
207 {
208 if ( IsLoggingEnabled() ) {
209 wxLog *pLog = wxLog::GetActiveTarget();
210 if ( pLog != NULL && pLog->GetVerbose() ) {
211 wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
212
213 wxVsnprintf(s_szBuf, s_szBufSize, szFormat, argptr);
214
215 wxLog::OnLog(wxLOG_Info, s_szBuf, time(NULL));
216 }
217 }
218 }
219
220 void wxLogVerbose(const wxChar *szFormat, ...)
221 {
222 va_list argptr;
223 va_start(argptr, szFormat);
224 wxVLogVerbose(szFormat, argptr);
225 va_end(argptr);
226 }
227
228 // debug functions
229 #ifdef __WXDEBUG__
230 #define IMPLEMENT_LOG_DEBUG_FUNCTION(level) \
231 void wxVLog##level(const wxChar *szFormat, va_list argptr) \
232 { \
233 if ( IsLoggingEnabled() ) { \
234 wxCRIT_SECT_LOCKER(locker, gs_csLogBuf); \
235 \
236 wxVsnprintf(s_szBuf, s_szBufSize, szFormat, argptr); \
237 \
238 wxLog::OnLog(wxLOG_##level, s_szBuf, time(NULL)); \
239 } \
240 } \
241 void wxLog##level(const wxChar *szFormat, ...) \
242 { \
243 va_list argptr; \
244 va_start(argptr, szFormat); \
245 wxVLog##level(szFormat, argptr); \
246 va_end(argptr); \
247 }
248
249 void wxVLogTrace(const wxChar *mask, const wxChar *szFormat, va_list argptr)
250 {
251 if ( IsLoggingEnabled() && wxLog::IsAllowedTraceMask(mask) ) {
252 wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
253
254 wxChar *p = s_szBuf;
255 size_t len = s_szBufSize;
256 wxStrncpy(s_szBuf, _T("("), len);
257 len -= 1; // strlen("(")
258 p += 1;
259 wxStrncat(p, mask, len);
260 size_t lenMask = wxStrlen(mask);
261 len -= lenMask;
262 p += lenMask;
263
264 wxStrncat(p, _T(") "), len);
265 len -= 2;
266 p += 2;
267
268 wxVsnprintf(p, len, szFormat, argptr);
269
270 wxLog::OnLog(wxLOG_Trace, s_szBuf, time(NULL));
271 }
272 }
273
274 void wxLogTrace(const wxChar *mask, const wxChar *szFormat, ...)
275 {
276 va_list argptr;
277 va_start(argptr, szFormat);
278 wxVLogTrace(mask, szFormat, argptr);
279 va_end(argptr);
280 }
281
282 void wxVLogTrace(wxTraceMask mask, const wxChar *szFormat, va_list argptr)
283 {
284 // we check that all of mask bits are set in the current mask, so
285 // that wxLogTrace(wxTraceRefCount | wxTraceOle) will only do something
286 // if both bits are set.
287 if ( IsLoggingEnabled() && ((wxLog::GetTraceMask() & mask) == mask) ) {
288 wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
289
290 wxVsnprintf(s_szBuf, s_szBufSize, szFormat, argptr);
291
292 wxLog::OnLog(wxLOG_Trace, s_szBuf, time(NULL));
293 }
294 }
295
296 void wxLogTrace(wxTraceMask mask, const wxChar *szFormat, ...)
297 {
298 va_list argptr;
299 va_start(argptr, szFormat);
300 wxVLogTrace(mask, szFormat, argptr);
301 va_end(argptr);
302 }
303
304 #else // release
305 #define IMPLEMENT_LOG_DEBUG_FUNCTION(level)
306 #endif
307
308 IMPLEMENT_LOG_DEBUG_FUNCTION(Debug)
309 IMPLEMENT_LOG_DEBUG_FUNCTION(Trace)
310
311 // wxLogSysError: one uses the last error code, for other you must give it
312 // explicitly
313
314 // common part of both wxLogSysError
315 void wxLogSysErrorHelper(long lErrCode)
316 {
317 wxChar szErrMsg[LOG_BUFFER_SIZE / 2];
318 wxSnprintf(szErrMsg, WXSIZEOF(szErrMsg),
319 _(" (error %ld: %s)"), lErrCode, wxSysErrorMsg(lErrCode));
320 wxStrncat(s_szBuf, szErrMsg, s_szBufSize - wxStrlen(s_szBuf));
321
322 wxLog::OnLog(wxLOG_Error, s_szBuf, time(NULL));
323 }
324
325 void WXDLLEXPORT wxVLogSysError(const wxChar *szFormat, va_list argptr)
326 {
327 if ( IsLoggingEnabled() ) {
328 wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
329
330 wxVsnprintf(s_szBuf, s_szBufSize, szFormat, argptr);
331
332 wxLogSysErrorHelper(wxSysErrorCode());
333 }
334 }
335
336 void WXDLLEXPORT wxLogSysError(const wxChar *szFormat, ...)
337 {
338 va_list argptr;
339 va_start(argptr, szFormat);
340 wxVLogSysError(szFormat, argptr);
341 va_end(argptr);
342 }
343
344 void WXDLLEXPORT wxVLogSysError(long lErrCode, const wxChar *szFormat, va_list argptr)
345 {
346 if ( IsLoggingEnabled() ) {
347 wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
348
349 wxVsnprintf(s_szBuf, s_szBufSize, szFormat, argptr);
350
351 wxLogSysErrorHelper(lErrCode);
352 }
353 }
354
355 void WXDLLEXPORT wxLogSysError(long lErrCode, const wxChar *szFormat, ...)
356 {
357 va_list argptr;
358 va_start(argptr, szFormat);
359 wxVLogSysError(lErrCode, szFormat, argptr);
360 va_end(argptr);
361 }
362
363 // ----------------------------------------------------------------------------
364 // wxLog class implementation
365 // ----------------------------------------------------------------------------
366
367 wxLog::wxLog()
368 {
369 }
370
371 wxChar *wxLog::SetLogBuffer( wxChar *buf, size_t size)
372 {
373 wxChar *oldbuf = s_szBuf;
374
375 if( buf == 0 )
376 {
377 s_szBuf = s_szBufStatic;
378 s_szBufSize = WXSIZEOF( s_szBufStatic );
379 }
380 else
381 {
382 s_szBuf = buf;
383 s_szBufSize = size;
384 }
385
386 return (oldbuf == s_szBufStatic ) ? 0 : oldbuf;
387 }
388
389 wxLog *wxLog::GetActiveTarget()
390 {
391 if ( ms_bAutoCreate && ms_pLogger == NULL ) {
392 // prevent infinite recursion if someone calls wxLogXXX() from
393 // wxApp::CreateLogTarget()
394 static bool s_bInGetActiveTarget = FALSE;
395 if ( !s_bInGetActiveTarget ) {
396 s_bInGetActiveTarget = TRUE;
397
398 // ask the application to create a log target for us
399 if ( wxTheApp != NULL )
400 ms_pLogger = wxTheApp->GetTraits()->CreateLogTarget();
401 else
402 ms_pLogger = new wxLogStderr;
403
404 s_bInGetActiveTarget = FALSE;
405
406 // do nothing if it fails - what can we do?
407 }
408 }
409
410 return ms_pLogger;
411 }
412
413 wxLog *wxLog::SetActiveTarget(wxLog *pLogger)
414 {
415 if ( ms_pLogger != NULL ) {
416 // flush the old messages before changing because otherwise they might
417 // get lost later if this target is not restored
418 ms_pLogger->Flush();
419 }
420
421 wxLog *pOldLogger = ms_pLogger;
422 ms_pLogger = pLogger;
423
424 return pOldLogger;
425 }
426
427 void wxLog::DontCreateOnDemand()
428 {
429 ms_bAutoCreate = FALSE;
430
431 // this is usually called at the end of the program and we assume that it
432 // is *always* called at the end - so we free memory here to avoid false
433 // memory leak reports from wxWin memory tracking code
434 ClearTraceMasks();
435 }
436
437 void wxLog::RemoveTraceMask(const wxString& str)
438 {
439 int index = ms_aTraceMasks.Index(str);
440 if ( index != wxNOT_FOUND )
441 ms_aTraceMasks.RemoveAt((size_t)index);
442 }
443
444 void wxLog::ClearTraceMasks()
445 {
446 ms_aTraceMasks.Clear();
447 }
448
449 void wxLog::TimeStamp(wxString *str)
450 {
451 if ( ms_timestamp )
452 {
453 wxChar buf[256];
454 time_t timeNow;
455 (void)time(&timeNow);
456 wxStrftime(buf, WXSIZEOF(buf), ms_timestamp, localtime(&timeNow));
457
458 str->Empty();
459 *str << buf << wxT(": ");
460 }
461 }
462
463 void wxLog::DoLog(wxLogLevel level, const wxChar *szString, time_t t)
464 {
465 switch ( level ) {
466 case wxLOG_FatalError:
467 DoLogString(wxString(_("Fatal error: ")) + szString, t);
468 DoLogString(_("Program aborted."), t);
469 Flush();
470 #ifdef __WXWINCE__
471 ExitThread(3);
472 #else
473 abort();
474 #endif
475 break;
476
477 case wxLOG_Error:
478 DoLogString(wxString(_("Error: ")) + szString, t);
479 break;
480
481 case wxLOG_Warning:
482 DoLogString(wxString(_("Warning: ")) + szString, t);
483 break;
484
485 case wxLOG_Info:
486 if ( GetVerbose() )
487 case wxLOG_Message:
488 case wxLOG_Status:
489 default: // log unknown log levels too
490 DoLogString(szString, t);
491 break;
492
493 case wxLOG_Trace:
494 case wxLOG_Debug:
495 #ifdef __WXDEBUG__
496 {
497 wxString msg = level == wxLOG_Trace ? wxT("Trace: ")
498 : wxT("Debug: ");
499 msg << szString;
500 DoLogString(msg, t);
501 }
502 #endif // Debug
503 break;
504 }
505 }
506
507 void wxLog::DoLogString(const wxChar *WXUNUSED(szString), time_t WXUNUSED(t))
508 {
509 wxFAIL_MSG(wxT("DoLogString must be overriden if it's called."));
510 }
511
512 void wxLog::Flush()
513 {
514 // nothing to do here
515 }
516
517 /*static*/ bool wxLog::IsAllowedTraceMask(const wxChar *mask)
518 {
519 for ( wxArrayString::iterator it = ms_aTraceMasks.begin(),
520 en = ms_aTraceMasks.end();
521 it != en; ++it )
522 if ( *it == mask)
523 return true;
524 return false;
525 }
526
527 // ----------------------------------------------------------------------------
528 // wxLogStderr class implementation
529 // ----------------------------------------------------------------------------
530
531 wxLogStderr::wxLogStderr(FILE *fp)
532 {
533 if ( fp == NULL )
534 m_fp = stderr;
535 else
536 m_fp = fp;
537 }
538
539 void wxLogStderr::DoLogString(const wxChar *szString, time_t WXUNUSED(t))
540 {
541 wxString str;
542 TimeStamp(&str);
543 str << szString;
544
545 fputs(str.mb_str(), m_fp);
546 fputc(_T('\n'), m_fp);
547 fflush(m_fp);
548
549 // under GUI systems such as Windows or Mac, programs usually don't have
550 // stderr at all, so show the messages also somewhere else, typically in
551 // the debugger window so that they go at least somewhere instead of being
552 // simply lost
553 if ( m_fp == stderr )
554 {
555 wxAppTraits *traits = wxTheApp ? wxTheApp->GetTraits() : NULL;
556 if ( traits && !traits->HasStderr() )
557 {
558 wxMessageOutputDebug().Printf(_T("%s"), str.c_str());
559 }
560 }
561 }
562
563 // ----------------------------------------------------------------------------
564 // wxLogStream implementation
565 // ----------------------------------------------------------------------------
566
567 #if wxUSE_STD_IOSTREAM
568 #include "wx/ioswrap.h"
569 wxLogStream::wxLogStream(wxSTD ostream *ostr)
570 {
571 if ( ostr == NULL )
572 m_ostr = &wxSTD cerr;
573 else
574 m_ostr = ostr;
575 }
576
577 void wxLogStream::DoLogString(const wxChar *szString, time_t WXUNUSED(t))
578 {
579 wxString str;
580 TimeStamp(&str);
581 (*m_ostr) << str << wxConvertWX2MB(szString) << wxSTD endl;
582 }
583 #endif // wxUSE_STD_IOSTREAM
584
585 // ----------------------------------------------------------------------------
586 // wxLogChain
587 // ----------------------------------------------------------------------------
588
589 wxLogChain::wxLogChain(wxLog *logger)
590 {
591 m_bPassMessages = TRUE;
592
593 m_logNew = logger;
594 m_logOld = wxLog::SetActiveTarget(this);
595 }
596
597 wxLogChain::~wxLogChain()
598 {
599 delete m_logOld;
600
601 if ( m_logNew != this )
602 delete m_logNew;
603 }
604
605 void wxLogChain::SetLog(wxLog *logger)
606 {
607 if ( m_logNew != this )
608 delete m_logNew;
609
610 m_logNew = logger;
611 }
612
613 void wxLogChain::Flush()
614 {
615 if ( m_logOld )
616 m_logOld->Flush();
617
618 // be careful to avoid infinite recursion
619 if ( m_logNew && m_logNew != this )
620 m_logNew->Flush();
621 }
622
623 void wxLogChain::DoLog(wxLogLevel level, const wxChar *szString, time_t t)
624 {
625 // let the previous logger show it
626 if ( m_logOld && IsPassingMessages() )
627 {
628 // bogus cast just to access protected DoLog
629 ((wxLogChain *)m_logOld)->DoLog(level, szString, t);
630 }
631
632 if ( m_logNew && m_logNew != this )
633 {
634 // as above...
635 ((wxLogChain *)m_logNew)->DoLog(level, szString, t);
636 }
637 }
638
639 // ----------------------------------------------------------------------------
640 // wxLogPassThrough
641 // ----------------------------------------------------------------------------
642
643 #ifdef __VISUALC__
644 // "'this' : used in base member initializer list" - so what?
645 #pragma warning(disable:4355)
646 #endif // VC++
647
648 wxLogPassThrough::wxLogPassThrough()
649 : wxLogChain(this)
650 {
651 }
652
653 #ifdef __VISUALC__
654 #pragma warning(default:4355)
655 #endif // VC++
656
657 // ============================================================================
658 // Global functions/variables
659 // ============================================================================
660
661 // ----------------------------------------------------------------------------
662 // static variables
663 // ----------------------------------------------------------------------------
664
665 wxLog *wxLog::ms_pLogger = (wxLog *)NULL;
666 bool wxLog::ms_doLog = TRUE;
667 bool wxLog::ms_bAutoCreate = TRUE;
668 bool wxLog::ms_bVerbose = FALSE;
669
670 wxLogLevel wxLog::ms_logLevel = wxLOG_Max; // log everything by default
671
672 size_t wxLog::ms_suspendCount = 0;
673
674 const wxChar *wxLog::ms_timestamp = wxT("%X"); // time only, no date
675
676 wxTraceMask wxLog::ms_ulTraceMask = (wxTraceMask)0;
677 wxArrayString wxLog::ms_aTraceMasks;
678
679 // ----------------------------------------------------------------------------
680 // stdout error logging helper
681 // ----------------------------------------------------------------------------
682
683 // helper function: wraps the message and justifies it under given position
684 // (looks more pretty on the terminal). Also adds newline at the end.
685 //
686 // TODO this is now disabled until I find a portable way of determining the
687 // terminal window size (ok, I found it but does anybody really cares?)
688 #ifdef LOG_PRETTY_WRAP
689 static void wxLogWrap(FILE *f, const char *pszPrefix, const char *psz)
690 {
691 size_t nMax = 80; // FIXME
692 size_t nStart = strlen(pszPrefix);
693 fputs(pszPrefix, f);
694
695 size_t n;
696 while ( *psz != '\0' ) {
697 for ( n = nStart; (n < nMax) && (*psz != '\0'); n++ )
698 putc(*psz++, f);
699
700 // wrapped?
701 if ( *psz != '\0' ) {
702 /*putc('\n', f);*/
703 for ( n = 0; n < nStart; n++ )
704 putc(' ', f);
705
706 // as we wrapped, squeeze all white space
707 while ( isspace(*psz) )
708 psz++;
709 }
710 }
711
712 putc('\n', f);
713 }
714 #endif //LOG_PRETTY_WRAP
715
716 // ----------------------------------------------------------------------------
717 // error code/error message retrieval functions
718 // ----------------------------------------------------------------------------
719
720 // get error code from syste
721 unsigned long wxSysErrorCode()
722 {
723 #if defined(__WXMSW__) && !defined(__WXMICROWIN__)
724 #ifdef __WIN32__
725 return ::GetLastError();
726 #else //WIN16
727 // TODO what to do on Windows 3.1?
728 return 0;
729 #endif //WIN16/32
730 #else //Unix
731 return errno;
732 #endif //Win/Unix
733 }
734
735 // get error message from system
736 const wxChar *wxSysErrorMsg(unsigned long nErrCode)
737 {
738 if ( nErrCode == 0 )
739 nErrCode = wxSysErrorCode();
740
741 #if defined(__WXMSW__) && !defined(__WXMICROWIN__)
742 #ifdef __WIN32__
743 static wxChar s_szBuf[LOG_BUFFER_SIZE / 2];
744
745 // get error message from system
746 LPVOID lpMsgBuf;
747 FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
748 NULL, nErrCode,
749 MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
750 (LPTSTR)&lpMsgBuf,
751 0, NULL);
752
753 // copy it to our buffer and free memory
754 if( lpMsgBuf != 0 ) {
755 wxStrncpy(s_szBuf, (const wxChar *)lpMsgBuf, WXSIZEOF(s_szBuf) - 1);
756 s_szBuf[WXSIZEOF(s_szBuf) - 1] = wxT('\0');
757
758 LocalFree(lpMsgBuf);
759
760 // returned string is capitalized and ended with '\r\n' - bad
761 s_szBuf[0] = (wxChar)wxTolower(s_szBuf[0]);
762 size_t len = wxStrlen(s_szBuf);
763 if ( len > 0 ) {
764 // truncate string
765 if ( s_szBuf[len - 2] == wxT('\r') )
766 s_szBuf[len - 2] = wxT('\0');
767 }
768 }
769 else {
770 s_szBuf[0] = wxT('\0');
771 }
772
773 return s_szBuf;
774 #else //Win16
775 // TODO
776 return NULL;
777 #endif // Win16/32
778 #else // Unix
779 #if wxUSE_UNICODE
780 static wxChar s_szBuf[LOG_BUFFER_SIZE / 2];
781 wxConvCurrent->MB2WC(s_szBuf, strerror(nErrCode), WXSIZEOF(s_szBuf) -1);
782 return s_szBuf;
783 #else
784 return strerror((int)nErrCode);
785 #endif
786 #endif // Win/Unix
787 }
788
789 #endif // wxUSE_LOG
790