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44c44c82a3fe5362bac5cc9536f06eeac52af00c
wxWidgets/src/common/log.cpp
Stefan Csomor 44c44c82a3 wxMac Unicode support 
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@19840 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
2003-03-27 20:21:51 +00:00

978 lines
27 KiB
C++
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/////////////////////////////////////////////////////////////////////////////
// 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 licence
/////////////////////////////////////////////////////////////////////////////
// ============================================================================
// 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"
#include "wx/msgdlg.h"
#ifdef __WXMSW__
#include "wx/msw/private.h"
#endif
#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>
#if defined(__WXMSW__)
#include "wx/msw/private.h" // includes windows.h for OutputDebugString
#endif
#if defined(__WXMAC__)
#include "wx/mac/private.h" // includes mac headers
#endif
// ----------------------------------------------------------------------------
// 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_szBufStatic[LOG_BUFFER_SIZE];
static wxChar *s_szBuf = s_szBufStatic;
static size_t s_szBufSize = WXSIZEOF( s_szBufStatic );
#if wxUSE_THREADS
// the critical section protecting the static buffer
static wxCriticalSection gs_csLogBuf;
#endif // wxUSE_THREADS
// return true if we have a non NULL non disabled log target
static inline bool IsLoggingEnabled()
{
return wxLog::IsEnabled() && (wxLog::GetActiveTarget() != NULL);
}
// ----------------------------------------------------------------------------
// 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 wxVLogGeneric(wxLogLevel level, const wxChar *szFormat, va_list argptr)
{
if ( IsLoggingEnabled() ) {
wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
wxVsnprintf(s_szBuf, s_szBufSize, szFormat, argptr);
wxLog::OnLog(level, s_szBuf, time(NULL));
}
}
void wxLogGeneric(wxLogLevel level, const wxChar *szFormat, ...)
{
va_list argptr;
va_start(argptr, szFormat);
wxVLogGeneric(level, szFormat, argptr);
va_end(argptr);
}
#define IMPLEMENT_LOG_FUNCTION(level) \
void wxVLog##level(const wxChar *szFormat, va_list argptr) \
{ \
if ( IsLoggingEnabled() ) { \
wxCRIT_SECT_LOCKER(locker, gs_csLogBuf); \
\
wxVsnprintf(s_szBuf, s_szBufSize, szFormat, argptr); \
\
wxLog::OnLog(wxLOG_##level, s_szBuf, time(NULL)); \
} \
} \
void wxLog##level(const wxChar *szFormat, ...) \
{ \
va_list argptr; \
va_start(argptr, szFormat); \
wxVLog##level(szFormat, argptr); \
va_end(argptr); \
}
IMPLEMENT_LOG_FUNCTION(Error)
IMPLEMENT_LOG_FUNCTION(Warning)
IMPLEMENT_LOG_FUNCTION(Message)
IMPLEMENT_LOG_FUNCTION(Info)
IMPLEMENT_LOG_FUNCTION(Status)
void wxSafeShowMessage(const wxString& title, const wxString& text)
{
#ifdef __WINDOWS__
::MessageBox(NULL, text, title, MB_OK | MB_ICONSTOP);
#else
wxFprintf(stderr, _T("%s: %s\n"), title.c_str(), text.c_str());
#endif
}
// fatal errors can't be suppressed nor handled by the custom log target and
// always terminate the program
void wxVLogFatalError(const wxChar *szFormat, va_list argptr)
{
wxVsnprintf(s_szBuf, s_szBufSize, szFormat, argptr);
wxSafeShowMessage(_T("Fatal Error"), s_szBuf);
abort();
}
void wxLogFatalError(const wxChar *szFormat, ...)
{
va_list argptr;
va_start(argptr, szFormat);
wxVLogFatalError(szFormat, argptr);
va_end(argptr);
}
// same as info, but only if 'verbose' mode is on
void wxVLogVerbose(const wxChar *szFormat, va_list argptr)
{
if ( IsLoggingEnabled() ) {
wxLog *pLog = wxLog::GetActiveTarget();
if ( pLog != NULL && pLog->GetVerbose() ) {
wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
wxVsnprintf(s_szBuf, s_szBufSize, szFormat, argptr);
wxLog::OnLog(wxLOG_Info, s_szBuf, time(NULL));
}
}
}
void wxLogVerbose(const wxChar *szFormat, ...)
{
va_list argptr;
va_start(argptr, szFormat);
wxVLogVerbose(szFormat, argptr);
va_end(argptr);
}
// debug functions
#ifdef __WXDEBUG__
#define IMPLEMENT_LOG_DEBUG_FUNCTION(level) \
void wxVLog##level(const wxChar *szFormat, va_list argptr) \
{ \
if ( IsLoggingEnabled() ) { \
wxCRIT_SECT_LOCKER(locker, gs_csLogBuf); \
\
wxVsnprintf(s_szBuf, s_szBufSize, szFormat, argptr); \
\
wxLog::OnLog(wxLOG_##level, s_szBuf, time(NULL)); \
} \
} \
void wxLog##level(const wxChar *szFormat, ...) \
{ \
va_list argptr; \
va_start(argptr, szFormat); \
wxVLog##level(szFormat, argptr); \
va_end(argptr); \
}
void wxVLogTrace(const wxChar *mask, const wxChar *szFormat, va_list argptr)
{
if ( IsLoggingEnabled() && wxLog::IsAllowedTraceMask(mask) ) {
wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
wxChar *p = s_szBuf;
size_t len = s_szBufSize;
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;
wxVsnprintf(p, len, szFormat, argptr);
wxLog::OnLog(wxLOG_Trace, s_szBuf, time(NULL));
}
}
void wxLogTrace(const wxChar *mask, const wxChar *szFormat, ...)
{
va_list argptr;
va_start(argptr, szFormat);
wxVLogTrace(mask, szFormat, argptr);
va_end(argptr);
}
void wxVLogTrace(wxTraceMask mask, const wxChar *szFormat, va_list argptr)
{
// 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 ( IsLoggingEnabled() && ((wxLog::GetTraceMask() & mask) == mask) ) {
wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
wxVsnprintf(s_szBuf, s_szBufSize, szFormat, argptr);
wxLog::OnLog(wxLOG_Trace, s_szBuf, time(NULL));
}
}
void wxLogTrace(wxTraceMask mask, const wxChar *szFormat, ...)
{
va_list argptr;
va_start(argptr, szFormat);
wxVLogTrace(mask, szFormat, argptr);
va_end(argptr);
}
#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, s_szBufSize - wxStrlen(s_szBuf));
wxLog::OnLog(wxLOG_Error, s_szBuf, time(NULL));
}
void WXDLLEXPORT wxVLogSysError(const wxChar *szFormat, va_list argptr)
{
if ( IsLoggingEnabled() ) {
wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
wxVsnprintf(s_szBuf, s_szBufSize, szFormat, argptr);
wxLogSysErrorHelper(wxSysErrorCode());
}
}
void WXDLLEXPORT wxLogSysError(const wxChar *szFormat, ...)
{
va_list argptr;
va_start(argptr, szFormat);
wxVLogSysError(szFormat, argptr);
va_end(argptr);
}
void WXDLLEXPORT wxVLogSysError(long lErrCode, const wxChar *szFormat, va_list argptr)
{
if ( IsLoggingEnabled() ) {
wxCRIT_SECT_LOCKER(locker, gs_csLogBuf);
wxVsnprintf(s_szBuf, s_szBufSize, szFormat, argptr);
wxLogSysErrorHelper(lErrCode);
}
}
void WXDLLEXPORT wxLogSysError(long lErrCode, const wxChar *szFormat, ...)
{
va_list argptr;
va_start(argptr, szFormat);
wxVLogSysError(lErrCode, szFormat, argptr);
va_end(argptr);
}
// ----------------------------------------------------------------------------
// wxLog class implementation
// ----------------------------------------------------------------------------
wxLog::wxLog()
{
}
wxChar *wxLog::SetLogBuffer( wxChar *buf, size_t size)
{
wxChar *oldbuf = s_szBuf;
if( buf == 0 )
{
s_szBuf = s_szBufStatic;
s_szBufSize = WXSIZEOF( s_szBufStatic );
}
else
{
s_szBuf = buf;
s_szBufSize = size;
}
return (oldbuf == s_szBufStatic ) ? 0 : oldbuf;
}
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::DontCreateOnDemand()
{
ms_bAutoCreate = FALSE;
// this is usually called at the end of the program and we assume that it
// is *always* called at the end - so we free memory here to avoid false
// memory leak reports from wxWin memory tracking code
ClearTraceMasks();
}
void wxLog::RemoveTraceMask(const wxString& str)
{
int index = ms_aTraceMasks.Index(str);
if ( index != wxNOT_FOUND )
ms_aTraceMasks.Remove((size_t)index);
}
void wxLog::ClearTraceMasks()
{
ms_aTraceMasks.Clear();
}
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()
{
// nothing to do here
}
// ----------------------------------------------------------------------------
// wxLogStderr class implementation
// ----------------------------------------------------------------------------
wxLogStderr::wxLogStderr(FILE *fp)
{
if ( fp == NULL )
m_fp = stderr;
else
m_fp = fp;
}
#if defined(__WXMAC__) && !defined(__DARWIN__) && defined(__MWERKS__) && (__MWERKS__ >= 0x2400)
// MetroNub stuff doesn't seem to work in CodeWarrior 5.3 Carbon builds...
#ifndef __MetroNubUtils__
#include "MetroNubUtils.h"
#endif
#ifdef __cplusplus
extern "C" {
#endif
#ifndef __GESTALT__
#include <Gestalt.h>
#endif
#ifndef true
#define true 1
#endif
#ifndef false
#define false 0
#endif
#if TARGET_API_MAC_CARBON
#include <CodeFragments.h>
EXTERN_API_C( long )
CallUniversalProc(UniversalProcPtr theProcPtr, ProcInfoType procInfo, ...);
ProcPtr gCallUniversalProc_Proc = NULL;
#endif
static MetroNubUserEntryBlock* gMetroNubEntry = NULL;
static long fRunOnce = false;
Boolean IsCompatibleVersion(short inVersion);
/* ---------------------------------------------------------------------------
IsCompatibleVersion
--------------------------------------------------------------------------- */
Boolean IsCompatibleVersion(short inVersion)
{
Boolean result = false;
if (fRunOnce)
{
MetroNubUserEntryBlock* block = (MetroNubUserEntryBlock *)result;
result = (inVersion <= block->apiHiVersion);
}
return result;
}
/* ---------------------------------------------------------------------------
IsMetroNubInstalled
--------------------------------------------------------------------------- */
Boolean IsMetroNubInstalled()
{
if (!fRunOnce)
{
long result, value;
fRunOnce = true;
gMetroNubEntry = NULL;
if (Gestalt(gestaltSystemVersion, &value) == noErr && value < 0x1000)
{
/* look for MetroNub's Gestalt selector */
if (Gestalt(kMetroNubUserSignature, &result) == noErr)
{
#if TARGET_API_MAC_CARBON
if (gCallUniversalProc_Proc == NULL)
{
CFragConnectionID connectionID;
Ptr mainAddress;
Str255 errorString;
ProcPtr symbolAddress;
OSErr err;
CFragSymbolClass symbolClass;
symbolAddress = NULL;
err = GetSharedLibrary("\pInterfaceLib", kPowerPCCFragArch, kFindCFrag,
&connectionID, &mainAddress, errorString);
if (err != noErr)
{
gCallUniversalProc_Proc = NULL;
goto end;
}
err = FindSymbol(connectionID, "\pCallUniversalProc",
(Ptr *) &gCallUniversalProc_Proc, &symbolClass);
if (err != noErr)
{
gCallUniversalProc_Proc = NULL;
goto end;
}
}
#endif
{
MetroNubUserEntryBlock* block = (MetroNubUserEntryBlock *)result;
/* make sure the version of the API is compatible */
if (block->apiLowVersion <= kMetroNubUserAPIVersion &&
kMetroNubUserAPIVersion <= block->apiHiVersion)
gMetroNubEntry = block; /* success! */
}
}
}
}
end:
#if TARGET_API_MAC_CARBON
return (gMetroNubEntry != NULL && gCallUniversalProc_Proc != NULL);
#else
return (gMetroNubEntry != NULL);
#endif
}
/* ---------------------------------------------------------------------------
IsMWDebuggerRunning [v1 API]
--------------------------------------------------------------------------- */
Boolean IsMWDebuggerRunning()
{
if (IsMetroNubInstalled())
return CallIsDebuggerRunningProc(gMetroNubEntry->isDebuggerRunning);
else
return false;
}
/* ---------------------------------------------------------------------------
AmIBeingMWDebugged [v1 API]
--------------------------------------------------------------------------- */
Boolean AmIBeingMWDebugged()
{
if (IsMetroNubInstalled())
return CallAmIBeingDebuggedProc(gMetroNubEntry->amIBeingDebugged);
else
return false;
}
/* ---------------------------------------------------------------------------
UserSetWatchPoint [v2 API]
--------------------------------------------------------------------------- */
OSErr UserSetWatchPoint (Ptr address, long length, WatchPointIDT* watchPointID)
{
if (IsMetroNubInstalled() && IsCompatibleVersion(kMetroNubUserAPIVersion))
return CallUserSetWatchPointProc(gMetroNubEntry->userSetWatchPoint,
address, length, watchPointID);
else
return errProcessIsNotClient;
}
/* ---------------------------------------------------------------------------
ClearWatchPoint [v2 API]
--------------------------------------------------------------------------- */
OSErr ClearWatchPoint (WatchPointIDT watchPointID)
{
if (IsMetroNubInstalled() && IsCompatibleVersion(kMetroNubUserAPIVersion))
return CallClearWatchPointProc(gMetroNubEntry->clearWatchPoint, watchPointID);
else
return errProcessIsNotClient;
}
#ifdef __cplusplus
}
#endif
#endif // defined(__WXMAC__) && !defined(__DARWIN__) && (__MWERKS__ >= 0x2400)
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 which does
// have stderr or unless this is a file logger which doesn't use stderr at
// all)
#if defined(__WXMSW__) && wxUSE_GUI && !defined(__WXMICROWIN__)
if ( m_fp == stderr )
{
str += wxT("\r\n") ;
OutputDebugString(str.c_str());
}
#endif // MSW
#if defined(__WXMAC__) && !defined(__DARWIN__) && wxUSE_GUI
Str255 pstr ;
wxString output = str + wxT(";g") ;
wxMacStringToPascal( output.c_str() , pstr ) ;
Boolean running = false ;
#if defined(__MWERKS__) && (__MWERKS__ >= 0x2400)
if ( IsMWDebuggerRunning() && AmIBeingMWDebugged() )
{
running = true ;
}
#endif
if (running)
{
#ifdef __powerc
DebugStr(pstr);
#else
SysBreakStr(pstr);
#endif
}
#endif // Mac
}
// ----------------------------------------------------------------------------
// wxLogStream implementation
// ----------------------------------------------------------------------------
#if wxUSE_STD_IOSTREAM
#include "wx/ioswrap.h"
wxLogStream::wxLogStream(wxSTD ostream *ostr)
{
if ( ostr == NULL )
m_ostr = &wxSTD cerr;
else
m_ostr = ostr;
}
void wxLogStream::DoLogString(const wxChar *szString, time_t WXUNUSED(t))
{
wxString str;
TimeStamp(&str);
(*m_ostr) << str << wxConvertWX2MB(szString) << wxSTD endl;
}
#endif // wxUSE_STD_IOSTREAM
// ----------------------------------------------------------------------------
// wxLogChain
// ----------------------------------------------------------------------------
wxLogChain::wxLogChain(wxLog *logger)
{
m_bPassMessages = TRUE;
m_logNew = logger;
m_logOld = wxLog::SetActiveTarget(this);
}
wxLogChain::~wxLogChain()
{
delete m_logOld;
if ( m_logNew != this )
delete m_logNew;
}
void wxLogChain::SetLog(wxLog *logger)
{
if ( m_logNew != this )
delete m_logNew;
m_logNew = logger;
}
void wxLogChain::Flush()
{
if ( m_logOld )
m_logOld->Flush();
// be careful to avoid infinite recursion
if ( m_logNew && m_logNew != this )
m_logNew->Flush();
}
void wxLogChain::DoLog(wxLogLevel level, const wxChar *szString, time_t t)
{
// let the previous logger show it
if ( m_logOld && IsPassingMessages() )
{
// bogus cast just to access protected DoLog
((wxLogChain *)m_logOld)->DoLog(level, szString, t);
}
if ( m_logNew && m_logNew != this )
{
// as above...
((wxLogChain *)m_logNew)->DoLog(level, szString, t);
}
}
// ----------------------------------------------------------------------------
// wxLogPassThrough
// ----------------------------------------------------------------------------
#ifdef __VISUALC__
// "'this' : used in base member initializer list" - so what?
#pragma warning(disable:4355)
#endif // VC++
wxLogPassThrough::wxLogPassThrough()
: wxLogChain(this)
{
}
#ifdef __VISUALC__
#pragma warning(default:4355)
#endif // VC++
// ============================================================================
// Global functions/variables
// ============================================================================
// ----------------------------------------------------------------------------
// static variables
// ----------------------------------------------------------------------------
wxLog *wxLog::ms_pLogger = (wxLog *)NULL;
bool wxLog::ms_doLog = TRUE;
bool wxLog::ms_bAutoCreate = TRUE;
bool wxLog::ms_bVerbose = FALSE;
wxLogLevel wxLog::ms_logLevel = wxLOG_Max; // log everything by default
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()
{
#if defined(__WXMSW__) && !defined(__WXMICROWIN__)
#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();
#if defined(__WXMSW__) && !defined(__WXMICROWIN__)
#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
if( lpMsgBuf != 0 ) {
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');
}
}
else {
s_szBuf[0] = 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
}
#endif //wxUSE_LOG
// vi:sts=4:sw=4:et
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