src/common/log.cpp

/////////////////////////////////////////////////////////////////////////////
// Name:        log.cpp
// Purpose:     Assorted wxLogXXX functions, and wxLog (sink for logs)
// Author:      Vadim Zeitlin
// Modified by:
// Created:     29/01/98
// RCS-ID:      $Id$
// Copyright:   (c) 1998 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
// Licence:     wxWindows license
/////////////////////////////////////////////////////////////////////////////

// ============================================================================
// declarations
// ============================================================================

// ----------------------------------------------------------------------------
// headers
// ----------------------------------------------------------------------------

#ifdef __GNUG__
  #pragma implementation "log.h"
#endif

// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"

#ifdef __BORLANDC__
  #pragma hdrstop
#endif

// wxWindows
#ifndef WX_PRECOMP
    #include "wx/string.h"
    #include "wx/intl.h"
    #include "wx/app.h"

    #if wxUSE_GUI
        #include "wx/window.h"
        #ifdef __WXMSW__
            #include "wx/msw/private.h"
        #endif
        #include "wx/msgdlg.h"
    #endif
#endif //WX_PRECOMP

#include  "wx/file.h"
#include  "wx/textfile.h"
#include  "wx/utils.h"
#include  "wx/wxchar.h"
#include  "wx/log.h"
#include  "wx/thread.h"

#if wxUSE_LOG

// other standard headers
#include  <errno.h>
#include  <stdlib.h>
#include  <time.h>

#ifdef  __WXMSW__
  #include  "wx/msw/private.h"      // includes windows.h for OutputDebugString
#else   //Unix
  #include  <signal.h>
#endif  //Win/Unix

// ----------------------------------------------------------------------------
// non member functions
// ----------------------------------------------------------------------------

// define this to enable wrapping of log messages
//#define LOG_PRETTY_WRAP

#ifdef  LOG_PRETTY_WRAP
  static void wxLogWrap(FILE *f, const char *pszPrefix, const char *psz);
#endif

// ============================================================================
// implementation
// ============================================================================

// ----------------------------------------------------------------------------
// globals
// ----------------------------------------------------------------------------

// log functions can't allocate memory (LogError("out of memory...") should
// work!), so we use a static buffer for all log messages
#define LOG_BUFFER_SIZE   (4096)

// static buffer for error messages
static wxChar s_szBuf[LOG_BUFFER_SIZE];

#if wxUSE_THREADS

// the critical section protecting the static buffer
static wxCriticalSection gs_csLogBuf;

#endif // wxUSE_THREADS

// ----------------------------------------------------------------------------
// implementation of Log functions
//
// NB: unfortunately we need all these distinct functions, we can't make them
//     macros and not all compilers inline vararg functions.
// ----------------------------------------------------------------------------

// generic log function
void wxLogGeneric(wxLogLevel level, const wxChar *szFormat, ...)
{
  if ( wxLog::GetActiveTarget() != NULL ) {
    wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);

    va_list argptr;
    va_start(argptr, szFormat);
    wxVsnprintf(s_szBuf, WXSIZEOF(s_szBuf), szFormat, argptr);
    va_end(argptr);

    wxLog::OnLog(level, s_szBuf, time(NULL));
  }
}

#define IMPLEMENT_LOG_FUNCTION(level)                             \
  void wxLog##level(const wxChar *szFormat, ...)                  \
  {                                                               \
    if ( wxLog::GetActiveTarget() != NULL ) {                     \
      wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);                    \
                                                                  \
      va_list argptr;                                             \
      va_start(argptr, szFormat);                                 \
      wxVsnprintf(s_szBuf, WXSIZEOF(s_szBuf), szFormat, argptr);  \
      va_end(argptr);                                             \
                                                                  \
      wxLog::OnLog(wxLOG_##level, s_szBuf, time(NULL));           \
    }                                                             \
  }

IMPLEMENT_LOG_FUNCTION(FatalError)
IMPLEMENT_LOG_FUNCTION(Error)
IMPLEMENT_LOG_FUNCTION(Warning)
IMPLEMENT_LOG_FUNCTION(Message)
IMPLEMENT_LOG_FUNCTION(Info)
IMPLEMENT_LOG_FUNCTION(Status)

// same as info, but only if 'verbose' mode is on
void wxLogVerbose(const wxChar *szFormat, ...)
{
  wxLog *pLog = wxLog::GetActiveTarget();
  if ( pLog != NULL && pLog->GetVerbose() ) {
    wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);

    va_list argptr;
    va_start(argptr, szFormat);
    wxVsnprintf(s_szBuf, WXSIZEOF(s_szBuf), szFormat, argptr);
    va_end(argptr);

    wxLog::OnLog(wxLOG_Info, s_szBuf, time(NULL));
  }
}

// debug functions
#ifdef __WXDEBUG__
#define IMPLEMENT_LOG_DEBUG_FUNCTION(level)                       \
  void wxLog##level(const wxChar *szFormat, ...)                  \
  {                                                               \
    if ( wxLog::GetActiveTarget() != NULL ) {                     \
      wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);                    \
                                                                  \
      va_list argptr;                                             \
      va_start(argptr, szFormat);                                 \
      wxVsnprintf(s_szBuf, WXSIZEOF(s_szBuf), szFormat, argptr);  \
      va_end(argptr);                                             \
                                                                  \
      wxLog::OnLog(wxLOG_##level, s_szBuf, time(NULL));           \
    }                                                             \
  }

  void wxLogTrace(const wxChar *mask, const wxChar *szFormat, ...)
  {
    wxLog *pLog = wxLog::GetActiveTarget();

    if ( pLog != NULL && wxLog::IsAllowedTraceMask(mask) ) {
      wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);

      wxChar *p = s_szBuf;
      size_t len = WXSIZEOF(s_szBuf);
      wxStrncpy(s_szBuf, _T("("), len);
      len -= 1; // strlen("(")
      p += 1;
      wxStrncat(p, mask, len);
      size_t lenMask = wxStrlen(mask);
      len -= lenMask;
      p += lenMask;

      wxStrncat(p, _T(") "), len);
      len -= 2;
      p += 2;

      va_list argptr;
      va_start(argptr, szFormat);
      wxVsnprintf(p, len, szFormat, argptr);
      va_end(argptr);

      wxLog::OnLog(wxLOG_Trace, s_szBuf, time(NULL));
    }
  }

  void wxLogTrace(wxTraceMask mask, const wxChar *szFormat, ...)
  {
    wxLog *pLog = wxLog::GetActiveTarget();

    // we check that all of mask bits are set in the current mask, so
    // that wxLogTrace(wxTraceRefCount | wxTraceOle) will only do something
    // if both bits are set.
    if ( pLog != NULL && ((pLog->GetTraceMask() & mask) == mask) ) {
      wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);

      va_list argptr;
      va_start(argptr, szFormat);
      wxVsnprintf(s_szBuf, WXSIZEOF(s_szBuf), szFormat, argptr);
      va_end(argptr);

      wxLog::OnLog(wxLOG_Trace, s_szBuf, time(NULL));
    }
  }

#else // release
  #define IMPLEMENT_LOG_DEBUG_FUNCTION(level)
#endif

IMPLEMENT_LOG_DEBUG_FUNCTION(Debug)
IMPLEMENT_LOG_DEBUG_FUNCTION(Trace)

// wxLogSysError: one uses the last error code, for other  you must give it
// explicitly

// common part of both wxLogSysError
void wxLogSysErrorHelper(long lErrCode)
{
    wxChar szErrMsg[LOG_BUFFER_SIZE / 2];
    wxSnprintf(szErrMsg, WXSIZEOF(szErrMsg),
               _(" (error %ld: %s)"), lErrCode, wxSysErrorMsg(lErrCode));
    wxStrncat(s_szBuf, szErrMsg, WXSIZEOF(s_szBuf) - wxStrlen(s_szBuf));

    wxLog::OnLog(wxLOG_Error, s_szBuf, time(NULL));
}

void WXDLLEXPORT wxLogSysError(const wxChar *szFormat, ...)
{
    wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);

    va_list argptr;
    va_start(argptr, szFormat);
    wxVsnprintf(s_szBuf, WXSIZEOF(s_szBuf), szFormat, argptr);
    va_end(argptr);

    wxLogSysErrorHelper(wxSysErrorCode());
}

void WXDLLEXPORT wxLogSysError(long lErrCode, const wxChar *szFormat, ...)
{
    wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);

    va_list argptr;
    va_start(argptr, szFormat);
    wxVsnprintf(s_szBuf, WXSIZEOF(s_szBuf), szFormat, argptr);
    va_end(argptr);

    wxLogSysErrorHelper(lErrCode);
}

// ----------------------------------------------------------------------------
// wxLog class implementation
// ----------------------------------------------------------------------------

wxLog::wxLog()
{
    m_bHasMessages = FALSE;
    m_bVerbose = FALSE;
}

wxLog *wxLog::GetActiveTarget()
{
    if ( ms_bAutoCreate && ms_pLogger == NULL ) {
        // prevent infinite recursion if someone calls wxLogXXX() from
        // wxApp::CreateLogTarget()
        static bool s_bInGetActiveTarget = FALSE;
        if ( !s_bInGetActiveTarget ) {
            s_bInGetActiveTarget = TRUE;

            // ask the application to create a log target for us
            if ( wxTheApp != NULL )
                ms_pLogger = wxTheApp->CreateLogTarget();
            else
                ms_pLogger = new wxLogStderr;

            s_bInGetActiveTarget = FALSE;

            // do nothing if it fails - what can we do?
        }
    }

    return ms_pLogger;
}

wxLog *wxLog::SetActiveTarget(wxLog *pLogger)
{
    if ( ms_pLogger != NULL ) {
        // flush the old messages before changing because otherwise they might
        // get lost later if this target is not restored
        ms_pLogger->Flush();
    }

    wxLog *pOldLogger = ms_pLogger;
    ms_pLogger = pLogger;

    return pOldLogger;
}

void wxLog::RemoveTraceMask(const wxString& str)
{
    int index = ms_aTraceMasks.Index(str);
    if ( index != wxNOT_FOUND )
        ms_aTraceMasks.Remove((size_t)index);
}

void wxLog::TimeStamp(wxString *str)
{
    if ( ms_timestamp )
    {
        wxChar buf[256];
        time_t timeNow;
        (void)time(&timeNow);
        wxStrftime(buf, WXSIZEOF(buf), ms_timestamp, localtime(&timeNow));

        str->Empty();
        *str << buf << wxT(": ");
    }
}

void wxLog::DoLog(wxLogLevel level, const wxChar *szString, time_t t)
{
    switch ( level ) {
        case wxLOG_FatalError:
            DoLogString(wxString(_("Fatal error: ")) + szString, t);
            DoLogString(_("Program aborted."), t);
            Flush();
            abort();
            break;

        case wxLOG_Error:
            DoLogString(wxString(_("Error: ")) + szString, t);
            break;

        case wxLOG_Warning:
            DoLogString(wxString(_("Warning: ")) + szString, t);
            break;

        case wxLOG_Info:
            if ( GetVerbose() )
        case wxLOG_Message:
        case wxLOG_Status:
        default:    // log unknown log levels too
                DoLogString(szString, t);
            break;

        case wxLOG_Trace:
        case wxLOG_Debug:
#ifdef __WXDEBUG__
            {
                wxString msg = level == wxLOG_Trace ? wxT("Trace: ")
                                                    : wxT("Debug: ");
                msg << szString;
                DoLogString(msg, t);
            }
#endif // Debug
            break;
    }
}

void wxLog::DoLogString(const wxChar *WXUNUSED(szString), time_t WXUNUSED(t))
{
    wxFAIL_MSG(wxT("DoLogString must be overriden if it's called."));
}

void wxLog::Flush()
{
    // do nothing
}

// ----------------------------------------------------------------------------
// wxLogStderr class implementation
// ----------------------------------------------------------------------------

wxLogStderr::wxLogStderr(FILE *fp)
{
    if ( fp == NULL )
        m_fp = stderr;
    else
        m_fp = fp;
}

#if defined(__WXMAC__)
#define kDebuggerSignature		'MWDB'

static Boolean FindProcessBySignature(OSType signature, ProcessInfoRec* info)
{
	OSErr err;
	ProcessSerialNumber psn;
	Boolean found = false;
	psn.highLongOfPSN = 0;
	psn.lowLongOfPSN = kNoProcess;

	if (!info) return false;

	info->processInfoLength = sizeof(ProcessInfoRec);
	info->processName = NULL;
	info->processAppSpec = NULL;

	err = noErr;
	while (!found && err == noErr)
	{
		err = GetNextProcess(&psn);
		if (err == noErr)
		{
			err = GetProcessInformation(&psn, info);
			found = err == noErr && info->processSignature == signature;
		}
	}
	return found;
}

pascal Boolean MWDebuggerIsRunning(void)
{
	ProcessInfoRec info;
	return FindProcessBySignature(kDebuggerSignature, &info);
}

pascal OSErr AmIBeingMWDebugged(Boolean* result)
{
	OSErr err;
	ProcessSerialNumber psn;
	OSType sig = kDebuggerSignature;
	AppleEvent	theAE = {typeNull, NULL};
	AppleEvent	theReply = {typeNull, NULL};
	AEAddressDesc addr  = {typeNull, NULL};
	DescType actualType;
	Size actualSize;

	if (!result) return paramErr;

	err = AECreateDesc(typeApplSignature, &sig, sizeof(sig), &addr);
	if (err != noErr) goto exit;

	err = AECreateAppleEvent('MWDB', 'Dbg?', &addr,
				kAutoGenerateReturnID, kAnyTransactionID, &theAE);
	if (err != noErr) goto exit;

	GetCurrentProcess(&psn);
	err = AEPutParamPtr(&theAE, keyDirectObject, typeProcessSerialNumber,
			&psn, sizeof(psn));
	if (err != noErr) goto exit;

	err = AESend(&theAE, &theReply, kAEWaitReply, kAENormalPriority,
					kAEDefaultTimeout, NULL, NULL);
	if (err != noErr) goto exit;

	err = AEGetParamPtr(&theReply, keyAEResult, typeBoolean, &actualType, result,
				sizeof(Boolean), &actualSize);

exit:
	if (addr.dataHandle)
		AEDisposeDesc(&addr);
	if (theAE.dataHandle)
		AEDisposeDesc(&theAE);
	if (theReply.dataHandle)
		AEDisposeDesc(&theReply);

	return err;
}
#endif

void wxLogStderr::DoLogString(const wxChar *szString, time_t WXUNUSED(t))
{
    wxString str;
    TimeStamp(&str);
    str << szString;

    fputs(str.mb_str(), m_fp);
    fputc(_T('\n'), m_fp);
    fflush(m_fp);

    // under Windows, programs usually don't have stderr at all, so show the
    // messages also under debugger - unless it's a console program
#if defined(__WXMSW__) && wxUSE_GUI
    str += wxT("\r\n") ;
    OutputDebugString(str.c_str());
#endif // MSW
#if defined(__WXMAC__) && wxUSE_GUI
	Str255 pstr ;
	strcpy( (char*) pstr , str.c_str() ) ;
	strcat( (char*) pstr , ";g" ) ;
	c2pstr( (char*) pstr ) ;
#if __WXDEBUG__
	Boolean running = false ;

/*
	if ( MWDebuggerIsRunning() )
	{
		AmIBeingMWDebugged( &running ) ;
	}
*/
	if (running)
	{
	#ifdef __powerc
		DebugStr(pstr);
	#else
		SysBreakStr(pstr);
	#endif
	}
	else
#endif
	{
	#ifdef __powerc
		DebugStr(pstr);
	#else
		DebugStr(pstr);
	#endif
	}
#endif // MSW
}

// ----------------------------------------------------------------------------
// wxLogStream implementation
// ----------------------------------------------------------------------------

#if wxUSE_STD_IOSTREAM
wxLogStream::wxLogStream(ostream *ostr)
{
    if ( ostr == NULL )
        m_ostr = &cerr;
    else
        m_ostr = ostr;
}

void wxLogStream::DoLogString(const wxChar *szString, time_t WXUNUSED(t))
{
    (*m_ostr) << wxConvertWX2MB(szString) << endl;
}
#endif // wxUSE_STD_IOSTREAM

// ============================================================================
// Global functions/variables
// ============================================================================

// ----------------------------------------------------------------------------
// static variables
// ----------------------------------------------------------------------------

wxLog          *wxLog::ms_pLogger      = (wxLog *)NULL;
bool            wxLog::ms_doLog        = TRUE;
bool            wxLog::ms_bAutoCreate  = TRUE;

size_t          wxLog::ms_suspendCount = 0;

#if wxUSE_GUI
    const wxChar *wxLog::ms_timestamp  = wxT("%X");  // time only, no date
#else
    const wxChar *wxLog::ms_timestamp  = NULL;       // save space
#endif

wxTraceMask     wxLog::ms_ulTraceMask  = (wxTraceMask)0;
wxArrayString   wxLog::ms_aTraceMasks;

// ----------------------------------------------------------------------------
// stdout error logging helper
// ----------------------------------------------------------------------------

// helper function: wraps the message and justifies it under given position
// (looks more pretty on the terminal). Also adds newline at the end.
//
// TODO this is now disabled until I find a portable way of determining the
//      terminal window size (ok, I found it but does anybody really cares?)
#ifdef LOG_PRETTY_WRAP
static void wxLogWrap(FILE *f, const char *pszPrefix, const char *psz)
{
    size_t nMax = 80; // FIXME
    size_t nStart = strlen(pszPrefix);
    fputs(pszPrefix, f);

    size_t n;
    while ( *psz != '\0' ) {
        for ( n = nStart; (n < nMax) && (*psz != '\0'); n++ )
            putc(*psz++, f);

        // wrapped?
        if ( *psz != '\0' ) {
            /*putc('\n', f);*/
            for ( n = 0; n < nStart; n++ )
                putc(' ', f);

            // as we wrapped, squeeze all white space
            while ( isspace(*psz) )
                psz++;
        }
    }

    putc('\n', f);
}
#endif  //LOG_PRETTY_WRAP

// ----------------------------------------------------------------------------
// error code/error message retrieval functions
// ----------------------------------------------------------------------------

// get error code from syste
unsigned long wxSysErrorCode()
{
#ifdef  __WXMSW__
#ifdef  __WIN32__
    return ::GetLastError();
#else   //WIN16
    // TODO what to do on Windows 3.1?
    return 0;
#endif  //WIN16/32
#else   //Unix
    return errno;
#endif  //Win/Unix
}

// get error message from system
const wxChar *wxSysErrorMsg(unsigned long nErrCode)
{
    if ( nErrCode == 0 )
        nErrCode = wxSysErrorCode();

#ifdef  __WXMSW__
#ifdef  __WIN32__
    static wxChar s_szBuf[LOG_BUFFER_SIZE / 2];

    // get error message from system
    LPVOID lpMsgBuf;
    FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
            NULL, nErrCode,
            MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
            (LPTSTR)&lpMsgBuf,
            0, NULL);

    // copy it to our buffer and free memory
    wxStrncpy(s_szBuf, (const wxChar *)lpMsgBuf, WXSIZEOF(s_szBuf) - 1);
    s_szBuf[WXSIZEOF(s_szBuf) - 1] = wxT('\0');
    LocalFree(lpMsgBuf);

    // returned string is capitalized and ended with '\r\n' - bad
    s_szBuf[0] = (wxChar)wxTolower(s_szBuf[0]);
    size_t len = wxStrlen(s_szBuf);
    if ( len > 0 ) {
        // truncate string
        if ( s_szBuf[len - 2] == wxT('\r') )
            s_szBuf[len - 2] = wxT('\0');
    }

    return s_szBuf;
#else   //Win16
    // TODO
    return NULL;
#endif // Win16/32
#else   // Unix
#if wxUSE_UNICODE
    static wxChar s_szBuf[LOG_BUFFER_SIZE / 2];
    wxConvCurrent->MB2WC(s_szBuf, strerror(nErrCode), WXSIZEOF(s_szBuf) -1);
    return s_szBuf;
#else
    return strerror((int)nErrCode);
#endif
#endif  // Win/Unix
}

// ----------------------------------------------------------------------------
// debug helper
// ----------------------------------------------------------------------------

#ifdef  __WXDEBUG__

// break into the debugger
void Trap()
{
#ifdef __WXMSW__
    DebugBreak();
#elif defined(__WXMAC__)
#if __powerc
    Debugger();
#else
    SysBreak();
#endif
#elif defined(__UNIX__)
    raise(SIGTRAP);
#else
    // TODO
#endif // Win/Unix
}

// this function is called when an assert fails
void wxOnAssert(const wxChar *szFile, int nLine, const wxChar *szMsg)
{
    // this variable can be set to true to suppress "assert failure" messages
    static bool s_bNoAsserts = FALSE;
    static bool s_bInAssert = FALSE;        // FIXME MT-unsafe

    if ( s_bInAssert ) {
        // He-e-e-e-elp!! we're trapped in endless loop
        Trap();

        s_bInAssert = FALSE;

        return;
    }

    s_bInAssert = TRUE;

    wxChar szBuf[LOG_BUFFER_SIZE];

    // make life easier for people using VC++ IDE: clicking on the message
    // will take us immediately to the place of the failed assert
    wxSnprintf(szBuf, WXSIZEOF(szBuf),
#ifdef __VISUALC__
               wxT("%s(%d): assert failed"),
#else  // !VC++
    // make the error message more clear for all the others
               wxT("Assert failed in file %s at line %d"),
#endif // VC/!VC
               szFile, nLine);

    if ( szMsg != NULL ) {
        wxStrcat(szBuf, wxT(": "));
        wxStrcat(szBuf, szMsg);
    }
    else {
        wxStrcat(szBuf, wxT("."));
    }

    if ( !s_bNoAsserts ) {
        // send it to the normal log destination
        wxLogDebug(szBuf);

#if wxUSE_GUI || defined(__WXMSW__)
        // this message is intentionally not translated - it is for
        // developpers only
        wxStrcat(szBuf, wxT("\nDo you want to stop the program?\nYou can also choose [Cancel] to suppress further warnings."));

        // use the native message box if available: this is more robust than
        // using our own
#ifdef __WXMSW__
        switch ( ::MessageBox(NULL, szBuf, _T("Debug"),
                              MB_YESNOCANCEL | MB_ICONSTOP ) ) {
            case IDYES:
                Trap();
                break;

            case IDCANCEL:
                s_bNoAsserts = TRUE;
                break;

            //case IDNO: nothing to do
        }
#else // !MSW
        switch ( wxMessageBox(szBuf, wxT("Debug"),
                              wxYES_NO | wxCANCEL | wxICON_STOP ) ) {
            case wxYES:
                Trap();
                break;

            case wxCANCEL:
                s_bNoAsserts = TRUE;
                break;

            //case wxNO: nothing to do
        }
#endif // GUI or MSW

#else // !GUI
        Trap();
#endif // GUI/!GUI
    }

    s_bInAssert = FALSE;
}

#endif  //WXDEBUG

#endif //wxUSE_LOG
Commit	Line	Data
	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	#ifdef __WXMSW__
	40	#include "wx/msw/private.h"
	41	#endif
	42	#include "wx/msgdlg.h"
	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	#ifdef __WXMSW__
	61	#include "wx/msw/private.h" // includes windows.h for OutputDebugString
	62	#else //Unix
	63	#include <signal.h>
	64	#endif //Win/Unix
	65
	66	// ----------------------------------------------------------------------------
	67	// non member functions
	68	// ----------------------------------------------------------------------------
	69
	70	// define this to enable wrapping of log messages
	71	//#define LOG_PRETTY_WRAP
	72
	73	#ifdef LOG_PRETTY_WRAP
	74	static void wxLogWrap(FILE f, const char pszPrefix, const char *psz);
	75	#endif
	76
	77	// ============================================================================
	78	// implementation
	79	// ============================================================================
	80
	81	// ----------------------------------------------------------------------------
	82	// globals
	83	// ----------------------------------------------------------------------------
	84
	85	// log functions can't allocate memory (LogError("out of memory...") should
	86	// work!), so we use a static buffer for all log messages
	87	#define LOG_BUFFER_SIZE (4096)
	88
	89	// static buffer for error messages
	90	static wxChar s_szBuf[LOG_BUFFER_SIZE];
	91
	92	#if wxUSE_THREADS
	93
	94	// the critical section protecting the static buffer
	95	static wxCriticalSection gs_csLogBuf;
	96
	97	#endif // wxUSE_THREADS
	98
	99	// ----------------------------------------------------------------------------
	100	// implementation of Log functions
	101	//
	102	// NB: unfortunately we need all these distinct functions, we can't make them
	103	// macros and not all compilers inline vararg functions.
	104	// ----------------------------------------------------------------------------
	105
	106	// generic log function
	107	void wxLogGeneric(wxLogLevel level, const wxChar *szFormat, ...)
	108	{
	109	if ( wxLog::GetActiveTarget() != NULL ) {
	110	wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
	111
	112	va_list argptr;
	113	va_start(argptr, szFormat);
	114	wxVsnprintf(s_szBuf, WXSIZEOF(s_szBuf), szFormat, argptr);
	115	va_end(argptr);
	116
	117	wxLog::OnLog(level, s_szBuf, time(NULL));
	118	}
	119	}
	120
	121	#define IMPLEMENT_LOG_FUNCTION(level) \
	122	void wxLog##level(const wxChar *szFormat, ...) \
	123	{ \
	124	if ( wxLog::GetActiveTarget() != NULL ) { \
	125	wxCRIT_SECT_LOCKER(locker, gs_csLogBuf); \
	126	\
	127	va_list argptr; \
	128	va_start(argptr, szFormat); \
	129	wxVsnprintf(s_szBuf, WXSIZEOF(s_szBuf), szFormat, argptr); \
	130	va_end(argptr); \
	131	\
	132	wxLog::OnLog(wxLOG_##level, s_szBuf, time(NULL)); \
	133	} \
	134	}
	135
	136	IMPLEMENT_LOG_FUNCTION(FatalError)
	137	IMPLEMENT_LOG_FUNCTION(Error)
	138	IMPLEMENT_LOG_FUNCTION(Warning)
	139	IMPLEMENT_LOG_FUNCTION(Message)
	140	IMPLEMENT_LOG_FUNCTION(Info)
	141	IMPLEMENT_LOG_FUNCTION(Status)
	142
	143	// same as info, but only if 'verbose' mode is on
	144	void wxLogVerbose(const wxChar *szFormat, ...)
	145	{
	146	wxLog *pLog = wxLog::GetActiveTarget();
	147	if ( pLog != NULL && pLog->GetVerbose() ) {
	148	wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
	149
	150	va_list argptr;
	151	va_start(argptr, szFormat);
	152	wxVsnprintf(s_szBuf, WXSIZEOF(s_szBuf), szFormat, argptr);
	153	va_end(argptr);
	154
	155	wxLog::OnLog(wxLOG_Info, s_szBuf, time(NULL));
	156	}
	157	}
	158
	159	// debug functions
	160	#ifdef __WXDEBUG__
	161	#define IMPLEMENT_LOG_DEBUG_FUNCTION(level) \
	162	void wxLog##level(const wxChar *szFormat, ...) \
	163	{ \
	164	if ( wxLog::GetActiveTarget() != NULL ) { \
	165	wxCRIT_SECT_LOCKER(locker, gs_csLogBuf); \
	166	\
	167	va_list argptr; \
	168	va_start(argptr, szFormat); \
	169	wxVsnprintf(s_szBuf, WXSIZEOF(s_szBuf), szFormat, argptr); \
	170	va_end(argptr); \
	171	\
	172	wxLog::OnLog(wxLOG_##level, s_szBuf, time(NULL)); \
	173	} \
	174	}
	175
	176	void wxLogTrace(const wxChar mask, const wxChar szFormat, ...)
	177	{
	178	wxLog *pLog = wxLog::GetActiveTarget();
	179
	180	if ( pLog != NULL && wxLog::IsAllowedTraceMask(mask) ) {
	181	wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
	182
	183	wxChar *p = s_szBuf;
	184	size_t len = WXSIZEOF(s_szBuf);
	185	wxStrncpy(s_szBuf, _T("("), len);
	186	len -= 1; // strlen("(")
	187	p += 1;
	188	wxStrncat(p, mask, len);
	189	size_t lenMask = wxStrlen(mask);
	190	len -= lenMask;
	191	p += lenMask;
	192
	193	wxStrncat(p, _T(") "), len);
	194	len -= 2;
	195	p += 2;
	196
	197	va_list argptr;
	198	va_start(argptr, szFormat);
	199	wxVsnprintf(p, len, szFormat, argptr);
	200	va_end(argptr);
	201
	202	wxLog::OnLog(wxLOG_Trace, s_szBuf, time(NULL));
	203	}
	204	}
	205
	206	void wxLogTrace(wxTraceMask mask, const wxChar *szFormat, ...)
	207	{
	208	wxLog *pLog = wxLog::GetActiveTarget();
	209
	210	// we check that all of mask bits are set in the current mask, so
	211	// that wxLogTrace(wxTraceRefCount \| wxTraceOle) will only do something
	212	// if both bits are set.
	213	if ( pLog != NULL && ((pLog->GetTraceMask() & mask) == mask) ) {
	214	wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
	215
	216	va_list argptr;
	217	va_start(argptr, szFormat);
	218	wxVsnprintf(s_szBuf, WXSIZEOF(s_szBuf), szFormat, argptr);
	219	va_end(argptr);
	220
	221	wxLog::OnLog(wxLOG_Trace, s_szBuf, time(NULL));
	222	}
	223	}
	224
	225	#else // release
	226	#define IMPLEMENT_LOG_DEBUG_FUNCTION(level)
	227	#endif
	228
	229	IMPLEMENT_LOG_DEBUG_FUNCTION(Debug)
	230	IMPLEMENT_LOG_DEBUG_FUNCTION(Trace)
	231
	232	// wxLogSysError: one uses the last error code, for other you must give it
	233	// explicitly
	234
	235	// common part of both wxLogSysError
	236	void wxLogSysErrorHelper(long lErrCode)
	237	{
	238	wxChar szErrMsg[LOG_BUFFER_SIZE / 2];
	239	wxSnprintf(szErrMsg, WXSIZEOF(szErrMsg),
	240	_(" (error %ld: %s)"), lErrCode, wxSysErrorMsg(lErrCode));
	241	wxStrncat(s_szBuf, szErrMsg, WXSIZEOF(s_szBuf) - wxStrlen(s_szBuf));
	242
	243	wxLog::OnLog(wxLOG_Error, s_szBuf, time(NULL));
	244	}
	245
	246	void WXDLLEXPORT wxLogSysError(const wxChar *szFormat, ...)
	247	{
	248	wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
	249
	250	va_list argptr;
	251	va_start(argptr, szFormat);
	252	wxVsnprintf(s_szBuf, WXSIZEOF(s_szBuf), szFormat, argptr);
	253	va_end(argptr);
	254
	255	wxLogSysErrorHelper(wxSysErrorCode());
	256	}
	257
	258	void WXDLLEXPORT wxLogSysError(long lErrCode, const wxChar *szFormat, ...)
	259	{
	260	wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
	261
	262	va_list argptr;
	263	va_start(argptr, szFormat);
	264	wxVsnprintf(s_szBuf, WXSIZEOF(s_szBuf), szFormat, argptr);
	265	va_end(argptr);
	266
	267	wxLogSysErrorHelper(lErrCode);
	268	}
	269
	270	// ----------------------------------------------------------------------------
	271	// wxLog class implementation
	272	// ----------------------------------------------------------------------------
	273
	274	wxLog::wxLog()
	275	{
	276	m_bHasMessages = FALSE;
	277	m_bVerbose = FALSE;
	278	}
	279
	280	wxLog *wxLog::GetActiveTarget()
	281	{
	282	if ( ms_bAutoCreate && ms_pLogger == NULL ) {
	283	// prevent infinite recursion if someone calls wxLogXXX() from
	284	// wxApp::CreateLogTarget()
	285	static bool s_bInGetActiveTarget = FALSE;
	286	if ( !s_bInGetActiveTarget ) {
	287	s_bInGetActiveTarget = TRUE;
	288
	289	// ask the application to create a log target for us
	290	if ( wxTheApp != NULL )
	291	ms_pLogger = wxTheApp->CreateLogTarget();
	292	else
	293	ms_pLogger = new wxLogStderr;
	294
	295	s_bInGetActiveTarget = FALSE;
	296
	297	// do nothing if it fails - what can we do?
	298	}
	299	}
	300
	301	return ms_pLogger;
	302	}
	303
	304	wxLog wxLog::SetActiveTarget(wxLog pLogger)
	305	{
	306	if ( ms_pLogger != NULL ) {
	307	// flush the old messages before changing because otherwise they might
	308	// get lost later if this target is not restored
	309	ms_pLogger->Flush();
	310	}
	311
	312	wxLog *pOldLogger = ms_pLogger;
	313	ms_pLogger = pLogger;
	314
	315	return pOldLogger;
	316	}
	317
	318	void wxLog::RemoveTraceMask(const wxString& str)
	319	{
	320	int index = ms_aTraceMasks.Index(str);
	321	if ( index != wxNOT_FOUND )
	322	ms_aTraceMasks.Remove((size_t)index);
	323	}
	324
	325	void wxLog::TimeStamp(wxString *str)
	326	{
	327	if ( ms_timestamp )
	328	{
	329	wxChar buf[256];
	330	time_t timeNow;
	331	(void)time(&timeNow);
	332	wxStrftime(buf, WXSIZEOF(buf), ms_timestamp, localtime(&timeNow));
	333
	334	str->Empty();
	335	*str << buf << wxT(": ");
	336	}
	337	}
	338
	339	void wxLog::DoLog(wxLogLevel level, const wxChar *szString, time_t t)
	340	{
	341	switch ( level ) {
	342	case wxLOG_FatalError:
	343	DoLogString(wxString(_("Fatal error: ")) + szString, t);
	344	DoLogString(_("Program aborted."), t);
	345	Flush();
	346	abort();
	347	break;
	348
	349	case wxLOG_Error:
	350	DoLogString(wxString(_("Error: ")) + szString, t);
	351	break;
	352
	353	case wxLOG_Warning:
	354	DoLogString(wxString(_("Warning: ")) + szString, t);
	355	break;
	356
	357	case wxLOG_Info:
	358	if ( GetVerbose() )
	359	case wxLOG_Message:
	360	case wxLOG_Status:
	361	default: // log unknown log levels too
	362	DoLogString(szString, t);
	363	break;
	364
	365	case wxLOG_Trace:
	366	case wxLOG_Debug:
	367	#ifdef __WXDEBUG__
	368	{
	369	wxString msg = level == wxLOG_Trace ? wxT("Trace: ")
	370	: wxT("Debug: ");
	371	msg << szString;
	372	DoLogString(msg, t);
	373	}
	374	#endif // Debug
	375	break;
	376	}
	377	}
	378
	379	void wxLog::DoLogString(const wxChar *WXUNUSED(szString), time_t WXUNUSED(t))
	380	{
	381	wxFAIL_MSG(wxT("DoLogString must be overriden if it's called."));
	382	}
	383
	384	void wxLog::Flush()
	385	{
	386	// do nothing
	387	}
	388
	389	// ----------------------------------------------------------------------------
	390	// wxLogStderr class implementation
	391	// ----------------------------------------------------------------------------
	392
	393	wxLogStderr::wxLogStderr(FILE *fp)
	394	{
	395	if ( fp == NULL )
	396	m_fp = stderr;
	397	else
	398	m_fp = fp;
	399	}
	400
	401	#if defined(__WXMAC__)
	402	#define kDebuggerSignature 'MWDB'
	403
	404	static Boolean FindProcessBySignature(OSType signature, ProcessInfoRec* info)
	405	{
	406	OSErr err;
	407	ProcessSerialNumber psn;
	408	Boolean found = false;
	409	psn.highLongOfPSN = 0;
	410	psn.lowLongOfPSN = kNoProcess;
	411
	412	if (!info) return false;
	413
	414	info->processInfoLength = sizeof(ProcessInfoRec);
	415	info->processName = NULL;
	416	info->processAppSpec = NULL;
	417
	418	err = noErr;
	419	while (!found && err == noErr)
	420	{
	421	err = GetNextProcess(&psn);
	422	if (err == noErr)
	423	{
	424	err = GetProcessInformation(&psn, info);
	425	found = err == noErr && info->processSignature == signature;
	426	}
	427	}
	428	return found;
	429	}
	430
	431	pascal Boolean MWDebuggerIsRunning(void)
	432	{
	433	ProcessInfoRec info;
	434	return FindProcessBySignature(kDebuggerSignature, &info);
	435	}
	436
	437	pascal OSErr AmIBeingMWDebugged(Boolean* result)
	438	{
	439	OSErr err;
	440	ProcessSerialNumber psn;
	441	OSType sig = kDebuggerSignature;
	442	AppleEvent theAE = {typeNull, NULL};
	443	AppleEvent theReply = {typeNull, NULL};
	444	AEAddressDesc addr = {typeNull, NULL};
	445	DescType actualType;
	446	Size actualSize;
	447
	448	if (!result) return paramErr;
	449
	450	err = AECreateDesc(typeApplSignature, &sig, sizeof(sig), &addr);
	451	if (err != noErr) goto exit;
	452
	453	err = AECreateAppleEvent('MWDB', 'Dbg?', &addr,
	454	kAutoGenerateReturnID, kAnyTransactionID, &theAE);
	455	if (err != noErr) goto exit;
	456
	457	GetCurrentProcess(&psn);
	458	err = AEPutParamPtr(&theAE, keyDirectObject, typeProcessSerialNumber,
	459	&psn, sizeof(psn));
	460	if (err != noErr) goto exit;
	461
	462	err = AESend(&theAE, &theReply, kAEWaitReply, kAENormalPriority,
	463	kAEDefaultTimeout, NULL, NULL);
	464	if (err != noErr) goto exit;
	465
	466	err = AEGetParamPtr(&theReply, keyAEResult, typeBoolean, &actualType, result,
	467	sizeof(Boolean), &actualSize);
	468
	469	exit:
	470	if (addr.dataHandle)
	471	AEDisposeDesc(&addr);
	472	if (theAE.dataHandle)
	473	AEDisposeDesc(&theAE);
	474	if (theReply.dataHandle)
	475	AEDisposeDesc(&theReply);
	476
	477	return err;
	478	}
	479	#endif
	480
	481	void wxLogStderr::DoLogString(const wxChar *szString, time_t WXUNUSED(t))
	482	{
	483	wxString str;
	484	TimeStamp(&str);
	485	str << szString;
	486
	487	fputs(str.mb_str(), m_fp);
	488	fputc(_T('\n'), m_fp);
	489	fflush(m_fp);
	490
	491	// under Windows, programs usually don't have stderr at all, so show the
	492	// messages also under debugger - unless it's a console program
	493	#if defined(__WXMSW__) && wxUSE_GUI
	494	str += wxT("\r\n") ;
	495	OutputDebugString(str.c_str());
	496	#endif // MSW
	497	#if defined(__WXMAC__) && wxUSE_GUI
	498	Str255 pstr ;
	499	strcpy( (char*) pstr , str.c_str() ) ;
	500	strcat( (char*) pstr , ";g" ) ;
	501	c2pstr( (char*) pstr ) ;
	502	#if __WXDEBUG__
	503	Boolean running = false ;
	504
	505	/*
	506	if ( MWDebuggerIsRunning() )
	507	{
	508	AmIBeingMWDebugged( &running ) ;
	509	}
	510	*/
	511	if (running)
	512	{
	513	#ifdef __powerc
	514	DebugStr(pstr);
	515	#else
	516	SysBreakStr(pstr);
	517	#endif
	518	}
	519	else
	520	#endif
	521	{
	522	#ifdef __powerc
	523	DebugStr(pstr);
	524	#else
	525	DebugStr(pstr);
	526	#endif
	527	}
	528	#endif // MSW
	529	}
	530
	531	// ----------------------------------------------------------------------------
	532	// wxLogStream implementation
	533	// ----------------------------------------------------------------------------
	534
	535	#if wxUSE_STD_IOSTREAM
	536	wxLogStream::wxLogStream(ostream *ostr)
	537	{
	538	if ( ostr == NULL )
	539	m_ostr = &cerr;
	540	else
	541	m_ostr = ostr;
	542	}
	543
	544	void wxLogStream::DoLogString(const wxChar *szString, time_t WXUNUSED(t))
	545	{
	546	(*m_ostr) << wxConvertWX2MB(szString) << endl;
	547	}
	548	#endif // wxUSE_STD_IOSTREAM
	549
	550	// ============================================================================
	551	// Global functions/variables
	552	// ============================================================================
	553
	554	// ----------------------------------------------------------------------------
	555	// static variables
	556	// ----------------------------------------------------------------------------
	557
	558	wxLog wxLog::ms_pLogger = (wxLog )NULL;
	559	bool wxLog::ms_doLog = TRUE;
	560	bool wxLog::ms_bAutoCreate = TRUE;
	561
	562	size_t wxLog::ms_suspendCount = 0;
	563
	564	#if wxUSE_GUI
	565	const wxChar *wxLog::ms_timestamp = wxT("%X"); // time only, no date
	566	#else
	567	const wxChar *wxLog::ms_timestamp = NULL; // save space
	568	#endif
	569
	570	wxTraceMask wxLog::ms_ulTraceMask = (wxTraceMask)0;
	571	wxArrayString wxLog::ms_aTraceMasks;
	572
	573	// ----------------------------------------------------------------------------
	574	// stdout error logging helper
	575	// ----------------------------------------------------------------------------
	576
	577	// helper function: wraps the message and justifies it under given position
	578	// (looks more pretty on the terminal). Also adds newline at the end.
	579	//
	580	// TODO this is now disabled until I find a portable way of determining the
	581	// terminal window size (ok, I found it but does anybody really cares?)
	582	#ifdef LOG_PRETTY_WRAP
	583	static void wxLogWrap(FILE f, const char pszPrefix, const char *psz)
	584	{
	585	size_t nMax = 80; // FIXME
	586	size_t nStart = strlen(pszPrefix);
	587	fputs(pszPrefix, f);
	588
	589	size_t n;
	590	while ( *psz != '\0' ) {
	591	for ( n = nStart; (n < nMax) && (*psz != '\0'); n++ )
	592	putc(*psz++, f);
	593
	594	// wrapped?
	595	if ( *psz != '\0' ) {
	596	/putc('\n', f);/
	597	for ( n = 0; n < nStart; n++ )
	598	putc(' ', f);
	599
	600	// as we wrapped, squeeze all white space
	601	while ( isspace(*psz) )
	602	psz++;
	603	}
	604	}
	605
	606	putc('\n', f);
	607	}
	608	#endif //LOG_PRETTY_WRAP
	609
	610	// ----------------------------------------------------------------------------
	611	// error code/error message retrieval functions
	612	// ----------------------------------------------------------------------------
	613
	614	// get error code from syste
	615	unsigned long wxSysErrorCode()
	616	{
	617	#ifdef __WXMSW__
	618	#ifdef __WIN32__
	619	return ::GetLastError();
	620	#else //WIN16
	621	// TODO what to do on Windows 3.1?
	622	return 0;
	623	#endif //WIN16/32
	624	#else //Unix
	625	return errno;
	626	#endif //Win/Unix
	627	}
	628
	629	// get error message from system
	630	const wxChar *wxSysErrorMsg(unsigned long nErrCode)
	631	{
	632	if ( nErrCode == 0 )
	633	nErrCode = wxSysErrorCode();
	634
	635	#ifdef __WXMSW__
	636	#ifdef __WIN32__
	637	static wxChar s_szBuf[LOG_BUFFER_SIZE / 2];
	638
	639	// get error message from system
	640	LPVOID lpMsgBuf;
	641	FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER \| FORMAT_MESSAGE_FROM_SYSTEM,
	642	NULL, nErrCode,
	643	MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
	644	(LPTSTR)&lpMsgBuf,
	645	0, NULL);
	646
	647	// copy it to our buffer and free memory
	648	wxStrncpy(s_szBuf, (const wxChar *)lpMsgBuf, WXSIZEOF(s_szBuf) - 1);
	649	s_szBuf[WXSIZEOF(s_szBuf) - 1] = wxT('\0');
	650	LocalFree(lpMsgBuf);
	651
	652	// returned string is capitalized and ended with '\r\n' - bad
	653	s_szBuf[0] = (wxChar)wxTolower(s_szBuf[0]);
	654	size_t len = wxStrlen(s_szBuf);
	655	if ( len > 0 ) {
	656	// truncate string
	657	if ( s_szBuf[len - 2] == wxT('\r') )
	658	s_szBuf[len - 2] = wxT('\0');
	659	}
	660
	661	return s_szBuf;
	662	#else //Win16
	663	// TODO
	664	return NULL;
	665	#endif // Win16/32
	666	#else // Unix
	667	#if wxUSE_UNICODE
	668	static wxChar s_szBuf[LOG_BUFFER_SIZE / 2];
	669	wxConvCurrent->MB2WC(s_szBuf, strerror(nErrCode), WXSIZEOF(s_szBuf) -1);
	670	return s_szBuf;
	671	#else
	672	return strerror((int)nErrCode);
	673	#endif
	674	#endif // Win/Unix
	675	}
	676
	677	// ----------------------------------------------------------------------------
	678	// debug helper
	679	// ----------------------------------------------------------------------------
	680
	681	#ifdef __WXDEBUG__
	682
	683	// break into the debugger
	684	void Trap()
	685	{
	686	#ifdef __WXMSW__
	687	DebugBreak();
	688	#elif defined(__WXMAC__)
	689	#if __powerc
	690	Debugger();
	691	#else
	692	SysBreak();
	693	#endif
	694	#elif defined(__UNIX__)
	695	raise(SIGTRAP);
	696	#else
	697	// TODO
	698	#endif // Win/Unix
	699	}
	700
	701	// this function is called when an assert fails
	702	void wxOnAssert(const wxChar szFile, int nLine, const wxChar szMsg)
	703	{
	704	// this variable can be set to true to suppress "assert failure" messages
	705	static bool s_bNoAsserts = FALSE;
	706	static bool s_bInAssert = FALSE; // FIXME MT-unsafe
	707
	708	if ( s_bInAssert ) {
	709	// He-e-e-e-elp!! we're trapped in endless loop
	710	Trap();
	711
	712	s_bInAssert = FALSE;
	713
	714	return;
	715	}
	716
	717	s_bInAssert = TRUE;
	718
	719	wxChar szBuf[LOG_BUFFER_SIZE];
	720
	721	// make life easier for people using VC++ IDE: clicking on the message
	722	// will take us immediately to the place of the failed assert
	723	wxSnprintf(szBuf, WXSIZEOF(szBuf),
	724	#ifdef __VISUALC__
	725	wxT("%s(%d): assert failed"),
	726	#else // !VC++
	727	// make the error message more clear for all the others
	728	wxT("Assert failed in file %s at line %d"),
	729	#endif // VC/!VC
	730	szFile, nLine);
	731
	732	if ( szMsg != NULL ) {
	733	wxStrcat(szBuf, wxT(": "));
	734	wxStrcat(szBuf, szMsg);
	735	}
	736	else {
	737	wxStrcat(szBuf, wxT("."));
	738	}
	739
	740	if ( !s_bNoAsserts ) {
	741	// send it to the normal log destination
	742	wxLogDebug(szBuf);
	743
	744	#if wxUSE_GUI \|\| defined(__WXMSW__)
	745	// this message is intentionally not translated - it is for
	746	// developpers only
	747	wxStrcat(szBuf, wxT("\nDo you want to stop the program?\nYou can also choose [Cancel] to suppress further warnings."));
	748
	749	// use the native message box if available: this is more robust than
	750	// using our own
	751	#ifdef __WXMSW__
	752	switch ( ::MessageBox(NULL, szBuf, _T("Debug"),
	753	MB_YESNOCANCEL \| MB_ICONSTOP ) ) {
	754	case IDYES:
	755	Trap();
	756	break;
	757
	758	case IDCANCEL:
	759	s_bNoAsserts = TRUE;
	760	break;
	761
	762	//case IDNO: nothing to do
	763	}
	764	#else // !MSW
	765	switch ( wxMessageBox(szBuf, wxT("Debug"),
	766	wxYES_NO \| wxCANCEL \| wxICON_STOP ) ) {
	767	case wxYES:
	768	Trap();
	769	break;
	770
	771	case wxCANCEL:
	772	s_bNoAsserts = TRUE;
	773	break;
	774
	775	//case wxNO: nothing to do
	776	}
	777	#endif // GUI or MSW
	778
	779	#else // !GUI
	780	Trap();
	781	#endif // GUI/!GUI
	782	}
	783
	784	s_bInAssert = FALSE;
	785	}
	786
	787	#endif //WXDEBUG
	788
	789	#endif //wxUSE_LOG