/////////////////////////////////////////////////////////////////////////////
-// Name: log.h
+// Name: wx/log.h
// 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
+// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
-#ifndef _WX_LOG_H_
-#define _WX_LOG_H_
+#ifndef _WX_LOG_H_
+#define _WX_LOG_H_
-#ifdef __GNUG__
-#pragma interface "log.h"
-#endif
+#include "wx/defs.h"
// ----------------------------------------------------------------------------
-// constants
+// common constants for use in wxUSE_LOG/!wxUSE_LOG
// ----------------------------------------------------------------------------
-// different standard log levels (you may also define your own)
-enum
-{
- wxLOG_FatalError, // program can't continue, abort immediately
- wxLOG_Error, // a serious error, user must be informed about it
- wxLOG_Warning, // user is normally informed about it but may be ignored
- wxLOG_Message, // normal message (i.e. normal output of a non GUI app)
- wxLOG_Info, // informational message (a.k.a. 'Verbose')
- wxLOG_Status, // informational: might go to the status line of GUI app
- wxLOG_Debug, // never shown to the user, disabled in release mode
- wxLOG_Trace, // trace messages are also only enabled in debug mode
- wxLOG_Progress, // used for progress indicator (not yet)
- wxLOG_User = 100 // user defined levels start here
-};
+// the trace masks have been superceded by symbolic trace constants, they're
+// for compatibility only andwill be removed soon - do NOT use them
// meaning of different bits of the trace mask (which allows selectively
// enable/disable some trace messages)
#define wxTraceRefCount 0x0008 // trace various ref counting operations
#ifdef __WXMSW__
- #define wxTraceOleCalls 0x0100 // OLE interface calls
+ #define wxTraceOleCalls 0x0100 // OLE interface calls
#endif
+// ----------------------------------------------------------------------------
+// types
+// ----------------------------------------------------------------------------
+
+// NB: these types are needed even if wxUSE_LOG == 0
typedef unsigned long wxTraceMask;
typedef unsigned long wxLogLevel;
// ----------------------------------------------------------------------------
-// forward declarations
+// headers
// ----------------------------------------------------------------------------
-class WXDLLEXPORT wxTextCtrl;
-class WXDLLEXPORT wxLogFrame;
-class WXDLLEXPORT wxFrame;
-#if wxUSE_IOSTREAMH
-# include <ostream.h>
-#else
-# include <ostream>
-# ifdef _MSC_VER
- using namespace std;
+#include "wx/string.h"
+#include "wx/strvararg.h"
+
+#if wxUSE_LOG
+
+#include "wx/arrstr.h"
+
+#ifndef __WXPALMOS5__
+#ifndef __WXWINCE__
+ #include <time.h> // for time_t
+#endif
+#endif // ! __WXPALMOS5__
+
+#include "wx/dynarray.h"
+
+#ifndef wxUSE_LOG_DEBUG
+# ifdef __WXDEBUG__
+# define wxUSE_LOG_DEBUG 1
+# else // !__WXDEBUG__
+# define wxUSE_LOG_DEBUG 0
# endif
#endif
+// ----------------------------------------------------------------------------
+// forward declarations
+// ----------------------------------------------------------------------------
+
+#if wxUSE_GUI
+ class WXDLLIMPEXP_FWD_CORE wxTextCtrl;
+ class WXDLLIMPEXP_FWD_CORE wxLogFrame;
+ class WXDLLIMPEXP_FWD_CORE wxFrame;
+ class WXDLLIMPEXP_FWD_CORE wxWindow;
+#endif // wxUSE_GUI
+
+// ----------------------------------------------------------------------------
+// constants
+// ----------------------------------------------------------------------------
+
+// different standard log levels (you may also define your own)
+enum wxLogLevelValues
+{
+ wxLOG_FatalError, // program can't continue, abort immediately
+ wxLOG_Error, // a serious error, user must be informed about it
+ wxLOG_Warning, // user is normally informed about it but may be ignored
+ wxLOG_Message, // normal message (i.e. normal output of a non GUI app)
+ wxLOG_Status, // informational: might go to the status line of GUI app
+ wxLOG_Info, // informational message (a.k.a. 'Verbose')
+ wxLOG_Debug, // never shown to the user, disabled in release mode
+ wxLOG_Trace, // trace messages are also only enabled in debug mode
+ wxLOG_Progress, // used for progress indicator (not yet)
+ wxLOG_User = 100, // user defined levels start here
+ wxLOG_Max = 10000
+};
+
+// symbolic trace masks - wxLogTrace("foo", "some trace message...") will be
+// discarded unless the string "foo" has been added to the list of allowed
+// ones with AddTraceMask()
+
+#define wxTRACE_MemAlloc wxT("memalloc") // trace memory allocation (new/delete)
+#define wxTRACE_Messages wxT("messages") // trace window messages/X callbacks
+#define wxTRACE_ResAlloc wxT("resalloc") // trace GDI resource allocation
+#define wxTRACE_RefCount wxT("refcount") // trace various ref counting operations
+
+#ifdef __WXMSW__
+ #define wxTRACE_OleCalls wxT("ole") // OLE interface calls
+#endif
+
+#include "wx/iosfwrap.h"
+
// ----------------------------------------------------------------------------
// derive from this class to redirect (or suppress, or ...) log messages
// normally, only a single instance of this class exists but it's not enforced
// ----------------------------------------------------------------------------
-class WXDLLEXPORT wxLog
+
+class WXDLLIMPEXP_BASE wxLog
{
public:
- // ctor
- wxLog();
-
- // sink function
- static void OnLog(wxLogLevel level, const char *szString)
- {
- wxLog *pLogger = GetActiveTarget();
- if ( pLogger )
+ // ctor
+ wxLog(){}
+
+ // these functions allow to completely disable all log messages
+
+ // is logging disabled now?
+ static bool IsEnabled() { return ms_doLog; }
+
+ // change the flag state, return the previous one
+ static bool EnableLogging(bool doIt = true)
+ { bool doLogOld = ms_doLog; ms_doLog = doIt; return doLogOld; }
+
+ // static sink function - see DoLog() for function to overload in the
+ // derived classes
+ static void OnLog(wxLogLevel level, const wxString& szString, time_t t);
+
+ // message buffering
+
+ // flush shows all messages if they're not logged immediately (FILE
+ // and iostream logs don't need it, but wxGuiLog does to avoid showing
+ // 17 modal dialogs one after another)
+ virtual void Flush();
+
+ // flush the active target if any
+ static void FlushActive()
{
- pLogger->DoLog(level, szString);
+ if ( !ms_suspendCount )
+ {
+ wxLog *log = GetActiveTarget();
+ if ( log )
+ log->Flush();
+ }
}
- }
-
- // message buffering
- // flush shows all messages if they're not logged immediately
- // (FILE and iostream logs don't need it, but wxGuiLog does to avoid
- // showing 17 modal dialogs one after another)
- virtual void Flush();
- // call to Flush() may be optimized: call it only if this function
- // returns true (although Flush() also returns immediately if there
- // is no messages, this functions is more efficient because inline)
- bool HasPendingMessages() const { return m_bHasMessages; }
-
- // only one sink is active at each moment
- // get current log target, will call wxApp::CreateLogTarget() to create one
- // if none exists
- static wxLog *GetActiveTarget();
- // change log target, pLogger = NULL disables logging. if bNoFlashOld is true,
- // the old log target isn't flashed which might lead to loss of messages!
- // returns the previous log target
- static wxLog *SetActiveTarget(wxLog *pLogger, bool bNoFlashOld = FALSE);
-
- // functions controlling the default wxLog behaviour
- // verbose mode is activated by standard command-line '-verbose' option
- void SetVerbose(bool bVerbose = TRUE) { m_bVerbose = bVerbose; }
- // sets the format for timestamp prepended by wxLog::DoLog(): it's
- // passed to strftime() function, see it's documentation for details.
- // no time stamp at all if szTF is NULL or empty
- // NB: the string is not copied, so it's lifetime must be long enough!
- void SetTimeStampFormat(const char *szTF) { m_szTimeFormat = szTF; }
+
+ // only one sink is active at each moment
+ // get current log target, will call wxApp::CreateLogTarget() to
+ // create one if none exists
+ static wxLog *GetActiveTarget();
+
+ // change log target, pLogger may be NULL
+ static wxLog *SetActiveTarget(wxLog *pLogger);
+
+ // suspend the message flushing of the main target until the next call
+ // to Resume() - this is mainly for internal use (to prevent wxYield()
+ // from flashing the messages)
+ static void Suspend() { ms_suspendCount++; }
+
+ // must be called for each Suspend()!
+ static void Resume() { ms_suspendCount--; }
+
+ // functions controlling the default wxLog behaviour
+ // verbose mode is activated by standard command-line '-verbose'
+ // option
+ static void SetVerbose(bool bVerbose = true) { ms_bVerbose = bVerbose; }
+
+ // Set log level. Log messages with level > logLevel will not be logged.
+ static void SetLogLevel(wxLogLevel logLevel) { ms_logLevel = logLevel; }
+
+ // should GetActiveTarget() try to create a new log object if the
+ // current is NULL?
+ static void DontCreateOnDemand();
+
+ // Make GetActiveTarget() create a new log object again.
+ static void DoCreateOnDemand();
+
+ // log the count of repeating messages instead of logging the messages
+ // multiple times
+ static void SetRepetitionCounting(bool bRepetCounting = true)
+ { ms_bRepetCounting = bRepetCounting; }
+
+ // gets duplicate counting status
+ static bool GetRepetitionCounting() { return ms_bRepetCounting; }
+
// trace mask (see wxTraceXXX constants for details)
- static void SetTraceMask(wxTraceMask ulMask) { ms_ulTraceMask = ulMask; }
- // should GetActiveTarget() try to create a new log object if the current
- // is NULL?
- static void DontCreateOnDemand() { ms_bAutoCreate = FALSE; }
+ static void SetTraceMask(wxTraceMask ulMask) { ms_ulTraceMask = ulMask; }
+
+ // add string trace mask
+ static void AddTraceMask(const wxString& str);
+
+ // add string trace mask
+ static void RemoveTraceMask(const wxString& str);
+
+ // remove all string trace masks
+ static void ClearTraceMasks();
+
+ // get string trace masks: note that this is MT-unsafe if other threads can
+ // call AddTraceMask() concurrently
+ static const wxArrayString& GetTraceMasks() { return ms_aTraceMasks; }
+
+ // sets the time stamp string format: this is used as strftime() format
+ // string for the log targets which add time stamps to the messages; set
+ // it to empty string to disable time stamping completely.
+ static void SetTimestamp(const wxString& ts) { ms_timestamp = ts; }
+
+ // disable time stamping of log messages
+ static void DisableTimestamp() { SetTimestamp(wxEmptyString); }
+
+
+ // accessors
- // accessors
// gets the verbose status
- bool GetVerbose() const { return m_bVerbose; }
- // get current time format
- const char *GetTimeStampFormat() const { return m_szTimeFormat; }
+ static bool GetVerbose() { return ms_bVerbose; }
+
// get trace mask
- static wxTraceMask GetTraceMask() { return ms_ulTraceMask; }
+ static wxTraceMask GetTraceMask() { return ms_ulTraceMask; }
- // make dtor virtual for all derived classes
- virtual ~wxLog() { }
+ // is this trace mask in the list?
+ static bool IsAllowedTraceMask(const wxString& mask);
+
+ // return the current loglevel limit
+ static wxLogLevel GetLogLevel() { return ms_logLevel; }
+
+ // get the current timestamp format string (may be NULL)
+ static const wxString& GetTimestamp() { return ms_timestamp; }
-protected:
- bool m_bHasMessages;
- bool m_bVerbose; // FALSE => ignore LogInfo messages
- const char *m_szTimeFormat; // format for strftime()
+ // helpers
+
+ // put the time stamp into the string if ms_timestamp != NULL (don't
+ // change it otherwise)
+ static void TimeStamp(wxString *str);
+
+ // make dtor virtual for all derived classes
+ virtual ~wxLog();
+
+
+ // this method exists for backwards compatibility only, don't use
+ bool HasPendingMessages() const { return true; }
+
+#if WXWIN_COMPATIBILITY_2_6
+ // this function doesn't do anything any more, don't call it
+ wxDEPRECATED( static wxChar *SetLogBuffer(wxChar *buf, size_t size = 0) );
+#endif
+
+protected:
+ // the logging functions that can be overriden
- // the logging functions that can be overriden
// default DoLog() prepends the time stamp and a prefix corresponding
// to the message to szString and then passes it to DoLogString()
- virtual void DoLog(wxLogLevel level, const char *szString);
+ virtual void DoLog(wxLogLevel level, const wxString& szString, time_t t);
+#if WXWIN_COMPATIBILITY_2_8
+ // these shouldn't be used by new code
+ wxDEPRECATED_BUT_USED_INTERNALLY(
+ virtual void DoLog(wxLogLevel level, const char *szString, time_t t)
+ );
+
+ wxDEPRECATED_BUT_USED_INTERNALLY(
+ virtual void DoLog(wxLogLevel level, const wchar_t *wzString, time_t t)
+ );
+#endif // WXWIN_COMPATIBILITY_2_8
+
+ void LogString(const wxString& szString, time_t t)
+ { DoLogString(szString, t); }
+
// default DoLogString does nothing but is not pure virtual because if
// you override DoLog() you might not need it at all
- virtual void DoLogString(const char *szString);
+ virtual void DoLogString(const wxString& szString, time_t t);
+#if WXWIN_COMPATIBILITY_2_8
+ // these shouldn't be used by new code
+ virtual void DoLogString(const char *WXUNUSED(szString),
+ time_t WXUNUSED(t)) {}
+ virtual void DoLogString(const wchar_t *WXUNUSED(szString),
+ time_t WXUNUSED(t)) {}
+#endif // WXWIN_COMPATIBILITY_2_8
+
+ // this macro should be used in the derived classes to avoid warnings about
+ // hiding the other DoLog() overloads when overriding DoLog(wxString) --
+ // but don't use it with MSVC which doesn't give this warning but does give
+ // warning when a deprecated function is overridden
+#if WXWIN_COMPATIBILITY_2_8 && !defined(__VISUALC__)
+ #define wxSUPPRESS_DOLOG_HIDE_WARNING() \
+ virtual void DoLog(wxLogLevel, const char *, time_t) { } \
+ virtual void DoLog(wxLogLevel, const wchar_t *, time_t) { }
+
+ #define wxSUPPRESS_DOLOGSTRING_HIDE_WARNING() \
+ virtual void DoLogString(const char *, time_t) { } \
+ virtual void DoLogString(const wchar_t *, time_t) { }
+#else
+ #define wxSUPPRESS_DOLOG_HIDE_WARNING()
+ #define wxSUPPRESS_DOLOGSTRING_HIDE_WARNING()
+#endif
- // helpers
- // put the time stamp in the current format into the string
- wxString TimeStamp() const;
+ // log a message indicating the number of times the previous message was
+ // repeated if ms_prevCounter > 0, does nothing otherwise; return the old
+ // value of ms_prevCounter
+ unsigned LogLastRepeatIfNeeded();
private:
- // static variables
- // ----------------
- static wxLog *ms_pLogger; // currently active log sink
- static bool ms_bAutoCreate; // automatically create new log targets?
- static wxTraceMask ms_ulTraceMask; // controls wxLogTrace behaviour
+ // implement of LogLastRepeatIfNeeded(): it assumes that the
+ // caller had already locked ms_prevCS
+ unsigned LogLastRepeatIfNeededUnlocked();
+
+ // static variables
+ // ----------------
+
+ // if true, don't log the same message multiple times, only log it once
+ // with the number of times it was repeated
+ static bool ms_bRepetCounting;
+
+ static wxString ms_prevString; // previous message that was logged
+ static unsigned ms_prevCounter; // how many times it was repeated
+ static time_t ms_prevTimeStamp;// timestamp of the previous message
+ static wxLogLevel ms_prevLevel; // level of the previous message
+
+ static wxLog *ms_pLogger; // currently active log sink
+ static bool ms_doLog; // false => all logging disabled
+ static bool ms_bAutoCreate; // create new log targets on demand?
+ static bool ms_bVerbose; // false => ignore LogInfo messages
+
+ static wxLogLevel ms_logLevel; // limit logging to levels <= ms_logLevel
+
+ static size_t ms_suspendCount; // if positive, logs are not flushed
+
+ // format string for strftime(), if NULL, time stamping log messages is
+ // disabled
+ static wxString ms_timestamp;
+
+ static wxTraceMask ms_ulTraceMask; // controls wxLogTrace behaviour
+ static wxArrayString ms_aTraceMasks; // more powerful filter for wxLogTrace
};
// ----------------------------------------------------------------------------
// "trivial" derivations of wxLog
// ----------------------------------------------------------------------------
-// log everything to a "FILE *", stderr by default
-class WXDLLEXPORT wxLogStderr : public wxLog
+// log everything to a buffer
+class WXDLLIMPEXP_BASE wxLogBuffer : public wxLog
{
public:
- // redirect log output to a FILE
- wxLogStderr(FILE *fp = (FILE *) NULL);
+ wxLogBuffer() { }
+
+ // get the string contents with all messages logged
+ const wxString& GetBuffer() const { return m_str; }
+
+ // show the buffer contents to the user in the best possible way (this uses
+ // wxMessageOutputMessageBox) and clear it
+ virtual void Flush();
+
+protected:
+ virtual void DoLog(wxLogLevel level, const wxString& szString, time_t t);
+ virtual void DoLogString(const wxString& szString, time_t t);
+
+ wxSUPPRESS_DOLOG_HIDE_WARNING()
+ wxSUPPRESS_DOLOGSTRING_HIDE_WARNING()
private:
- // implement sink function
- virtual void DoLogString(const char *szString);
+ wxString m_str;
- FILE *m_fp;
+ DECLARE_NO_COPY_CLASS(wxLogBuffer)
};
-// log everything to an "ostream", cerr by default
-class WXDLLEXPORT wxLogStream : public wxLog
+
+// log everything to a "FILE *", stderr by default
+class WXDLLIMPEXP_BASE wxLogStderr : public wxLog
{
public:
- // redirect log output to an ostream
- wxLogStream(ostream *ostr = (ostream *) NULL);
+ // redirect log output to a FILE
+ wxLogStderr(FILE *fp = (FILE *) NULL);
protected:
- // implement sink function
- virtual void DoLogString(const char *szString);
+ // implement sink function
+ virtual void DoLogString(const wxString& szString, time_t t);
+
+ wxSUPPRESS_DOLOGSTRING_HIDE_WARNING()
+
+ FILE *m_fp;
- // @@ using ptr here to avoid including <iostream.h> from this file
- ostream *m_ostr;
+ DECLARE_NO_COPY_CLASS(wxLogStderr)
};
-#ifndef wxUSE_NOGUI
+#if wxUSE_STD_IOSTREAM
-// log everything to a text window (GUI only of course)
-class WXDLLEXPORT wxLogTextCtrl : public wxLogStream
+// log everything to an "ostream", cerr by default
+class WXDLLIMPEXP_BASE wxLogStream : public wxLog
{
public:
- // we just create an ostream from wxTextCtrl and use it in base class
- wxLogTextCtrl(wxTextCtrl *pTextCtrl);
- ~wxLogTextCtrl();
+ // redirect log output to an ostream
+ wxLogStream(wxSTD ostream *ostr = (wxSTD ostream *) NULL);
+
+protected:
+ // implement sink function
+ virtual void DoLogString(const wxString& szString, time_t t);
+
+ wxSUPPRESS_DOLOGSTRING_HIDE_WARNING()
+
+ // using ptr here to avoid including <iostream.h> from this file
+ wxSTD ostream *m_ostr;
};
+#endif // wxUSE_STD_IOSTREAM
+
// ----------------------------------------------------------------------------
-// GUI log target, the default one for wxWindows programs
+// /dev/null log target: suppress logging until this object goes out of scope
// ----------------------------------------------------------------------------
-class WXDLLEXPORT wxLogGui : public wxLog
-{
-public:
- // ctor
- wxLogGui();
- // show all messages that were logged since the last Flush()
- virtual void Flush();
+// example of usage:
+/*
+ void Foo()
+ {
+ wxFile file;
-protected:
- virtual void DoLog(wxLogLevel level, const char *szString);
+ // wxFile.Open() normally complains if file can't be opened, we don't
+ // want it
+ wxLogNull logNo;
+
+ if ( !file.Open("bar") )
+ ... process error ourselves ...
+
+ // ~wxLogNull called, old log sink restored
+ }
+ */
+class WXDLLIMPEXP_BASE wxLogNull
+{
+public:
+ wxLogNull() : m_flagOld(wxLog::EnableLogging(false)) { }
+ ~wxLogNull() { (void)wxLog::EnableLogging(m_flagOld); }
- wxArrayString m_aMessages;
- bool m_bErrors;
+private:
+ bool m_flagOld; // the previous value of the wxLog::ms_doLog
};
// ----------------------------------------------------------------------------
-// (background) log window: this class forwards all log messages to the log
-// target which was active when it was instantiated, but also collects them
-// to the log window. This window has it's own menu which allows the user to
-// close it, clear the log contents or save it to the file.
+// chaining log target: installs itself as a log target and passes all
+// messages to the real log target given to it in the ctor but also forwards
+// them to the previously active one
+//
+// note that you don't have to call SetActiveTarget() with this class, it
+// does it itself in its ctor
// ----------------------------------------------------------------------------
-class WXDLLEXPORT wxLogWindow : public wxLog
+
+class WXDLLIMPEXP_BASE wxLogChain : public wxLog
{
public:
- wxLogWindow(wxFrame *pParent, // the parent frame (can be NULL)
- const char *szTitle, // the title of the frame
- bool bShow = TRUE, // show window immediately?
- bool bPassToOld = TRUE); // pass log messages to the old target?
- ~wxLogWindow();
-
- // window operations
- // show/hide the log window
- void Show(bool bShow = TRUE);
- // retrieve the pointer to the frame
- wxFrame *GetFrame() const;
-
- // accessors
- // the previous log target (may be NULL)
- wxLog *GetOldLog() const { return m_pOldLog; }
+ wxLogChain(wxLog *logger);
+ virtual ~wxLogChain();
+
+ // change the new log target
+ void SetLog(wxLog *logger);
+
+ // this can be used to temporarily disable (and then reenable) passing
+ // messages to the old logger (by default we do pass them)
+ void PassMessages(bool bDoPass) { m_bPassMessages = bDoPass; }
+
// are we passing the messages to the previous log target?
- bool IsPassingMessages() const { return m_bPassMessages; }
+ bool IsPassingMessages() const { return m_bPassMessages; }
- // we can pass the messages to the previous log target (we're in this mode by
- // default: we collect all messages in the window, but also let the default
- // processing take place)
- void PassMessages(bool bDoPass) { m_bPassMessages = bDoPass; }
+ // return the previous log target (may be NULL)
+ wxLog *GetOldLog() const { return m_logOld; }
- // base class virtuals
- // we don't need it ourselves, but we pass it to the previous logger
- virtual void Flush();
+ // override base class version to flush the old logger as well
+ virtual void Flush();
- // overridables
- // called immediately after the log frame creation allowing for
- // any extra initializations
- virtual void OnFrameCreate(wxFrame *frame);
- // called right before the log frame is going to be deleted
- virtual void OnFrameDelete(wxFrame *frame);
+ // call to avoid destroying the old log target
+ void DetachOldLog() { m_logOld = NULL; }
protected:
- virtual void DoLog(wxLogLevel level, const char *szString);
- virtual void DoLogString(const char *szString);
+ // pass the chain to the old logger if needed
+ virtual void DoLog(wxLogLevel level, const wxString& szString, time_t t);
+
+ wxSUPPRESS_DOLOG_HIDE_WARNING()
private:
- bool m_bPassMessages; // pass messages to m_pOldLog?
- wxLog *m_pOldLog; // previous log target
- wxLogFrame *m_pLogFrame; // the log frame
+ // the current log target
+ wxLog *m_logNew;
+
+ // the previous log target
+ wxLog *m_logOld;
+
+ // do we pass the messages to the old logger?
+ bool m_bPassMessages;
+
+ DECLARE_NO_COPY_CLASS(wxLogChain)
};
-#endif // wxUSE_NOGUI
+// a chain log target which uses itself as the new logger
-// ----------------------------------------------------------------------------
-// /dev/null log target: suppress logging until this object goes out of scope
-// ----------------------------------------------------------------------------
+#define wxLogPassThrough wxLogInterposer
-// example of usage:
-/*
-void Foo() {
- wxFile file;
-
- // wxFile.Open() normally complains if file can't be opened, we don't want it
- wxLogNull logNo;
- if ( !file.Open("bar") )
- ... process error ourselves ...
-
- // ~wxLogNull called, old log sink restored
-}
-*/
-class WXDLLEXPORT wxLogNull
+class WXDLLIMPEXP_BASE wxLogInterposer : public wxLogChain
{
public:
- // ctor saves old log target, dtor restores it
- wxLogNull() { m_pPrevLogger = wxLog::SetActiveTarget((wxLog *)NULL, TRUE); }
- ~wxLogNull() { (void)wxLog::SetActiveTarget(m_pPrevLogger); }
+ wxLogInterposer();
private:
- wxLog *m_pPrevLogger; // old log target
+ DECLARE_NO_COPY_CLASS(wxLogInterposer)
};
+// a temporary interposer which doesn't destroy the old log target
+// (calls DetachOldLog)
+
+class WXDLLIMPEXP_BASE wxLogInterposerTemp : public wxLogChain
+{
+public:
+ wxLogInterposerTemp();
+
+private:
+ DECLARE_NO_COPY_CLASS(wxLogInterposerTemp)
+};
+
+#if wxUSE_GUI
+ // include GUI log targets:
+ #include "wx/generic/logg.h"
+#endif // wxUSE_GUI
+
// ============================================================================
// global functions
// ============================================================================
// for log messages for easy redirection
// ----------------------------------------------------------------------------
+// ----------------------------------------------------------------------------
+// get error code/error message from system in a portable way
+// ----------------------------------------------------------------------------
+
+// return the last system error code
+WXDLLIMPEXP_BASE unsigned long wxSysErrorCode();
+
+// return the error message for given (or last if 0) error code
+WXDLLIMPEXP_BASE const wxChar* wxSysErrorMsg(unsigned long nErrCode = 0);
+
+// ----------------------------------------------------------------------------
// define wxLog<level>
-// -------------------
+// ----------------------------------------------------------------------------
+
+#define DECLARE_LOG_FUNCTION(level) \
+ extern void WXDLLIMPEXP_BASE \
+ wxDoLog##level##Wchar(const wxChar *format, ...); \
+ extern void WXDLLIMPEXP_BASE \
+ wxDoLog##level##Utf8(const char *format, ...); \
+ WX_DEFINE_VARARG_FUNC_VOID(wxLog##level, \
+ 1, (const wxFormatString&), \
+ wxDoLog##level##Wchar, wxDoLog##level##Utf8) \
+ DECLARE_LOG_FUNCTION_WATCOM(level) \
+ extern void WXDLLIMPEXP_BASE wxVLog##level(const wxString& format, \
+ va_list argptr)
+
+#ifdef __WATCOMC__
+ // workaround for http://bugzilla.openwatcom.org/show_bug.cgi?id=351;
+ // can't use WX_WATCOM_ONLY_CODE here because the macro would expand to
+ // something too big for Borland C++ to handle
+ #define DECLARE_LOG_FUNCTION_WATCOM(level) \
+ WX_VARARG_WATCOM_WORKAROUND(void, wxLog##level, \
+ 1, (const wxString&), \
+ (wxFormatString(f1))) \
+ WX_VARARG_WATCOM_WORKAROUND(void, wxLog##level, \
+ 1, (const wxCStrData&), \
+ (wxFormatString(f1))) \
+ WX_VARARG_WATCOM_WORKAROUND(void, wxLog##level, \
+ 1, (const char*), \
+ (wxFormatString(f1))) \
+ WX_VARARG_WATCOM_WORKAROUND(void, wxLog##level, \
+ 1, (const wchar_t*), \
+ (wxFormatString(f1)))
+#else
+ #define DECLARE_LOG_FUNCTION_WATCOM(level)
+#endif
+
+
+#define DECLARE_LOG_FUNCTION2_EXP(level, argclass, arg, expdecl) \
+ extern void expdecl wxDoLog##level##Wchar(argclass arg, \
+ const wxChar *format, ...); \
+ extern void expdecl wxDoLog##level##Utf8(argclass arg, \
+ const char *format, ...); \
+ WX_DEFINE_VARARG_FUNC_VOID(wxLog##level, \
+ 2, (argclass, const wxFormatString&), \
+ wxDoLog##level##Wchar, wxDoLog##level##Utf8) \
+ DECLARE_LOG_FUNCTION2_EXP_WATCOM(level, argclass, arg, expdecl) \
+ extern void expdecl wxVLog##level(argclass arg, \
+ const wxString& format, \
+ va_list argptr)
+
+#ifdef __WATCOMC__
+ // workaround for http://bugzilla.openwatcom.org/show_bug.cgi?id=351;
+ // can't use WX_WATCOM_ONLY_CODE here because the macro would expand to
+ // something too big for Borland C++ to handle
+ #define DECLARE_LOG_FUNCTION2_EXP_WATCOM(level, argclass, arg, expdecl) \
+ WX_VARARG_WATCOM_WORKAROUND(void, wxLog##level, \
+ 2, (argclass, const wxString&), \
+ (f1, wxFormatString(f2))) \
+ WX_VARARG_WATCOM_WORKAROUND(void, wxLog##level, \
+ 2, (argclass, const wxCStrData&), \
+ (f1, wxFormatString(f2))) \
+ WX_VARARG_WATCOM_WORKAROUND(void, wxLog##level, \
+ 2, (argclass, const char*), \
+ (f1, wxFormatString(f2))) \
+ WX_VARARG_WATCOM_WORKAROUND(void, wxLog##level, \
+ 2, (argclass, const wchar_t*), \
+ (f1, wxFormatString(f2)))
+#else
+ #define DECLARE_LOG_FUNCTION2_EXP_WATCOM(level, argclass, arg, expdecl)
+#endif
+
+
+#else // !wxUSE_LOG
+
+#ifdef __WATCOMC__
+ // workaround for http://bugzilla.openwatcom.org/show_bug.cgi?id=351
+ #define WX_WATCOM_ONLY_CODE( x ) x
+#else
+ #define WX_WATCOM_ONLY_CODE( x )
+#endif
-#define DECLARE_LOG_FUNCTION(level) \
- extern void WXDLLEXPORT wxLog##level(const char *szFormat, ...)
-#define DECLARE_LOG_FUNCTION2(level, arg1) \
- extern void WXDLLEXPORT wxLog##level(arg1, const char *szFormat, ...)
+#if defined(__WATCOMC__) || defined(__MINGW32__)
+ // Mingw has similar problem with wxLogSysError:
+ #define WX_WATCOM_OR_MINGW_ONLY_CODE( x ) x
+#else
+ #define WX_WATCOM_OR_MINGW_ONLY_CODE( x )
+#endif
+
+// log functions do nothing at all
+#define DECLARE_LOG_FUNCTION(level) \
+ WX_DEFINE_VARARG_FUNC_NOP(wxLog##level, 1, (const wxString&)) \
+ WX_WATCOM_ONLY_CODE( \
+ WX_DEFINE_VARARG_FUNC_NOP(wxLog##level, 1, (const char*)) \
+ WX_DEFINE_VARARG_FUNC_NOP(wxLog##level, 1, (const wchar_t*)) \
+ WX_DEFINE_VARARG_FUNC_NOP(wxLog##level, 1, (const wxCStrData&)) \
+ ) \
+ inline void wxVLog##level(const wxString& WXUNUSED(format), \
+ va_list WXUNUSED(argptr)) { } \
+
+#define DECLARE_LOG_FUNCTION2_EXP(level, argclass, arg, expdecl) \
+ WX_DEFINE_VARARG_FUNC_NOP(wxLog##level, 2, (argclass, const wxString&)) \
+ WX_WATCOM_OR_MINGW_ONLY_CODE( \
+ WX_DEFINE_VARARG_FUNC_NOP(wxLog##level, 2, (argclass, const char*)) \
+ WX_DEFINE_VARARG_FUNC_NOP(wxLog##level, 2, (argclass, const wchar_t*)) \
+ WX_DEFINE_VARARG_FUNC_NOP(wxLog##level, 2, (argclass, const wxCStrData&)) \
+ ) \
+ inline void wxVLog##level(argclass WXUNUSED(arg), \
+ const wxString& WXUNUSED(format), \
+ va_list WXUNUSED(argptr)) {}
+
+// Empty Class to fake wxLogNull
+class WXDLLIMPEXP_BASE wxLogNull
+{
+public:
+ wxLogNull() { }
+};
+
+// Dummy macros to replace some functions.
+#define wxSysErrorCode() (unsigned long)0
+#define wxSysErrorMsg( X ) (const wxChar*)NULL
+
+// Fake symbolic trace masks... for those that are used frequently
+#define wxTRACE_OleCalls wxEmptyString // OLE interface calls
+
+#endif // wxUSE_LOG/!wxUSE_LOG
+
+#define DECLARE_LOG_FUNCTION2(level, argclass, arg) \
+ DECLARE_LOG_FUNCTION2_EXP(level, argclass, arg, WXDLLIMPEXP_BASE)
+
+// VC6 produces a warning if we a macro expanding to nothing to
+// DECLARE_LOG_FUNCTION2:
+#if defined(__VISUALC__) && __VISUALC__ < 1300
+ // "not enough actual parameters for macro 'DECLARE_LOG_FUNCTION2_EXP'"
+ #pragma warning(disable:4003)
+#endif
// a generic function for all levels (level is passes as parameter)
-DECLARE_LOG_FUNCTION2(Generic, wxLogLevel level);
+DECLARE_LOG_FUNCTION2(Generic, wxLogLevel, level);
// one function per each level
DECLARE_LOG_FUNCTION(FatalError);
// application frame, if any
DECLARE_LOG_FUNCTION(Status);
-// this one is the same as previous except that it allows to explicitly
-// specify the frame to which the output should go
-DECLARE_LOG_FUNCTION2(Status, wxFrame *pFrame);
+#if wxUSE_GUI
+ // this one is the same as previous except that it allows to explicitly
+ class WXDLLIMPEXP_FWD_CORE wxFrame;
+ // specify the frame to which the output should go
+ DECLARE_LOG_FUNCTION2_EXP(Status, wxFrame *, pFrame, WXDLLIMPEXP_CORE);
+#endif // wxUSE_GUI
// additional one: as wxLogError, but also logs last system call error code
// and the corresponding error message if available
// and another one which also takes the error code (for those broken APIs
// that don't set the errno (like registry APIs in Win32))
-DECLARE_LOG_FUNCTION2(SysError, long lErrCode);
+DECLARE_LOG_FUNCTION2(SysError, long, lErrCode);
+#ifdef __WATCOMC__
+// workaround for http://bugzilla.openwatcom.org/show_bug.cgi?id=351
+DECLARE_LOG_FUNCTION2(SysError, unsigned long, lErrCode);
+#endif
// debug functions do nothing in release mode
-#ifdef __WXDEBUG__
- DECLARE_LOG_FUNCTION(Debug);
-
- // first king of LogTrace is uncoditional: it doesn't check the level,
- // while the second one does nothing if all of level bits are not set
- // in wxLog::GetActive()->GetTraceMask().
- DECLARE_LOG_FUNCTION(Trace);
- DECLARE_LOG_FUNCTION2(Trace, wxTraceMask mask);
-#else //!debug
- // these functions do nothing
- inline void wxLogDebug(const char *, ...) { }
- inline void wxLogTrace(const char *, ...) { }
- inline void wxLogTrace(wxTraceMask, const char *, ...) { }
+#if wxUSE_LOG && wxUSE_LOG_DEBUG
+ DECLARE_LOG_FUNCTION(Debug);
+
+ // there is no more unconditional LogTrace: it is not different from
+ // LogDebug and it creates overload ambiguities
+ //DECLARE_LOG_FUNCTION(Trace);
+
+ // this version only logs the message if the mask had been added to the
+ // list of masks with AddTraceMask()
+ DECLARE_LOG_FUNCTION2(Trace, const wxString&, mask);
+#ifdef __WATCOMC__
+ // workaround for http://bugzilla.openwatcom.org/show_bug.cgi?id=351
+ DECLARE_LOG_FUNCTION2(Trace, const char*, mask);
+ DECLARE_LOG_FUNCTION2(Trace, const wchar_t*, mask);
#endif
+ // and this one does nothing if all of level bits are not set in
+ // wxLog::GetActive()->GetTraceMask() -- it's deprecated in favour of
+ // string identifiers
+ DECLARE_LOG_FUNCTION2(Trace, wxTraceMask, mask);
+#ifdef __WATCOMC__
+ // workaround for http://bugzilla.openwatcom.org/show_bug.cgi?id=351
+ DECLARE_LOG_FUNCTION2(Trace, int, mask);
+#endif
+#else //!debug || !wxUSE_LOG
+ // these functions do nothing in release builds, but don't define them as
+ // nothing as it could result in different code structure in debug and
+ // release and this could result in trouble when these macros are used
+ // inside if/else
+ //
+ // note that making wxVLogDebug/Trace() themselves (empty inline) functions
+ // is a bad idea as some compilers are stupid enough to not inline even
+ // empty functions if their parameters are complicated enough, but by
+ // defining them as an empty inline function we ensure that even dumbest
+ // compilers optimise them away
+ inline void wxLogNop() { }
+
+ #define wxVLogDebug(fmt, valist) wxLogNop()
+ #define wxVLogTrace(mask, fmt, valist) wxLogNop()
+
+ #ifdef HAVE_VARIADIC_MACROS
+ // unlike the inline functions below, this completely removes the
+ // wxLogXXX calls from the object file:
+ #define wxLogDebug(fmt, ...) wxLogNop()
+ #define wxLogTrace(mask, fmt, ...) wxLogNop()
+ #else // !HAVE_VARIADIC_MACROS
+ //inline void wxLogDebug(const wxString& fmt, ...) {}
+ WX_DEFINE_VARARG_FUNC_NOP(wxLogDebug, 1, (const wxString&))
+ //inline void wxLogTrace(wxTraceMask, const wxString& fmt, ...) {}
+ //inline void wxLogTrace(const wxString&, const wxString& fmt, ...) {}
+ WX_DEFINE_VARARG_FUNC_NOP(wxLogTrace, 2, (wxTraceMask, const wxString&))
+ WX_DEFINE_VARARG_FUNC_NOP(wxLogTrace, 2, (const wxString&, const wxString&))
+ #ifdef __WATCOMC__
+ // workaround for http://bugzilla.openwatcom.org/show_bug.cgi?id=351
+ WX_DEFINE_VARARG_FUNC_NOP(wxLogTrace, 2, (const char*, const char*))
+ WX_DEFINE_VARARG_FUNC_NOP(wxLogTrace, 2, (const wchar_t*, const wchar_t*))
+ #endif
+ #endif // HAVE_VARIADIC_MACROS/!HAVE_VARIADIC_MACROS
+#endif // debug/!debug
+
+#if defined(__VISUALC__) && __VISUALC__ < 1300
+ #pragma warning(default:4003)
+#endif
-// are we in 'verbose' mode?
-// (note that it's often handy to change this var manually from the
-// debugger, thus enabling/disabling verbose reporting for some
-// parts of the program only)
-WXDLLEXPORT_DATA(extern bool) g_bVerbose;
-
-// ----------------------------------------------------------------------------
-// get error code/error message from system in a portable way
-// ----------------------------------------------------------------------------
-
-// return the last system error code
-unsigned long WXDLLEXPORT wxSysErrorCode();
-// return the error message for given (or last if 0) error code
-const char* WXDLLEXPORT wxSysErrorMsg(unsigned long nErrCode = 0);
+// wxLogFatalError helper: show the (fatal) error to the user in a safe way,
+// i.e. without using wxMessageBox() for example because it could crash
+void WXDLLIMPEXP_BASE
+wxSafeShowMessage(const wxString& title, const wxString& text);
// ----------------------------------------------------------------------------
// debug only logging functions: use them with API name and error code
// ----------------------------------------------------------------------------
-#ifdef __WXDEBUG__
- #define wxLogApiError(api, rc) \
- wxLogDebug("At %s(%d) '%s' failed with error %lx (%s).", \
- __FILE__, __LINE__, api, \
- rc, wxSysErrorMsg(rc))
- #define wxLogLastError(api) wxLogApiError(api, wxSysErrorCode())
+#ifdef __WXDEBUG__
+ // make life easier for people using VC++ IDE: clicking on the message
+ // will take us immediately to the place of the failed API
+#ifdef __VISUALC__
+ #define wxLogApiError(api, rc) \
+ wxLogDebug(wxT("%s(%d): '%s' failed with error 0x%08lx (%s)."), \
+ __FILE__, __LINE__, api, \
+ (long)rc, wxSysErrorMsg(rc))
+#else // !VC++
+ #define wxLogApiError(api, rc) \
+ wxLogDebug(wxT("In file %s at line %d: '%s' failed with ") \
+ wxT("error 0x%08lx (%s)."), \
+ __FILE__, __LINE__, api, \
+ (long)rc, wxSysErrorMsg(rc))
+#endif // VC++/!VC++
+
+ #define wxLogLastError(api) wxLogApiError(api, wxSysErrorCode())
+
#else //!debug
- inline void wxLogApiError(const char *, long) { }
- inline void wxLogLastError(const char *) { }
+ #define wxLogApiError(api, err) wxLogNop()
+ #define wxLogLastError(api) wxLogNop()
#endif //debug/!debug
+// wxCocoa has additiional trace masks
+#if defined(__WXCOCOA__)
+#include "wx/cocoa/log.h"
+#endif
+
+#ifdef WX_WATCOM_ONLY_CODE
+ #undef WX_WATCOM_ONLY_CODE
+#endif
+
#endif // _WX_LOG_H_
+
projects / wxWidgets.git / blobdiff