X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/dd85fc6b89333821b22ae76808914d8e1d508095..ac776ec973b7dfbbdc586d1cc5da1b3b7f4a3f6c:/include/wx/log.h diff --git a/include/wx/log.h b/include/wx/log.h index 31f283dfdb..f57a0ddb55 100644 --- a/include/wx/log.h +++ b/include/wx/log.h @@ -1,31 +1,34 @@ ///////////////////////////////////////////////////////////////////////////// -// 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 -// Licence: wxWindows license +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// -#ifndef _WX_LOG_H_ -#define _WX_LOG_H_ +#ifndef _WX_LOG_H_ +#define _WX_LOG_H_ -#ifdef __GNUG__ +#if defined(__GNUG__) && !defined(__APPLE__) #pragma interface "log.h" #endif -#include "wx/setup.h" #include "wx/string.h" +#if wxUSE_LOG + // ---------------------------------------------------------------------------- // forward declarations // ---------------------------------------------------------------------------- -class WXDLLEXPORT wxTextCtrl; -class WXDLLEXPORT wxLogFrame; -class WXDLLEXPORT wxFrame; +#if wxUSE_GUI + class WXDLLIMPEXP_CORE wxTextCtrl; + class WXDLLIMPEXP_CORE wxLogFrame; + class WXDLLIMPEXP_CORE wxFrame; +#endif // wxUSE_GUI // ---------------------------------------------------------------------------- // types @@ -38,12 +41,20 @@ typedef unsigned long wxLogLevel; // headers // ---------------------------------------------------------------------------- -#if wxUSE_LOG - +#ifndef __WXWINCE__ #include // for time_t +#endif #include "wx/dynarray.h" +#ifndef wxUSE_LOG_DEBUG +# ifdef __WXDEBUG__ +# define wxUSE_LOG_DEBUG 1 +# else // !__WXDEBUG__ +# define wxUSE_LOG_DEBUG 0 +# endif +#endif + // ---------------------------------------------------------------------------- // constants // ---------------------------------------------------------------------------- @@ -55,25 +66,26 @@ enum 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_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_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 "memalloc" // trace memory allocation (new/delete) -#define wxTRACE_Messages "messages" // trace window messages/X callbacks -#define wxTRACE_ResAlloc "resalloc" // trace GDI resource allocation -#define wxTRACE_RefCount "refcount" // trace various ref counting operations +#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 "ole" // OLE interface calls + #define wxTRACE_OleCalls wxT("ole") // OLE interface calls #endif // the trace masks have been superceded by symbolic trace constants, they're @@ -90,19 +102,25 @@ enum #define wxTraceOleCalls 0x0100 // OLE interface calls #endif -#include "wx/ioswrap.h" +#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(); + // Internal buffer. + // Allow replacement of the fixed size static buffer with + // a user allocated one. Pass in NULL to restore the + // built in static buffer. + static wxChar *SetLogBuffer( wxChar *buf, size_t size = 0 ); + // these functions allow to completely disable all log messages // is logging disabled now? static bool IsEnabled() { return ms_doLog; } @@ -114,7 +132,7 @@ public: // derived classes static void OnLog(wxLogLevel level, const wxChar *szString, time_t t) { - if ( IsEnabled() ) { + if ( IsEnabled() && ms_logLevel >= level ) { wxLog *pLogger = GetActiveTarget(); if ( pLogger ) pLogger->DoLog(level, szString, t); @@ -126,10 +144,17 @@ public: // 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; } + + // flush the active target if any + static void FlushActive() + { + if ( !ms_suspendCount ) + { + wxLog *log = GetActiveTarget(); + if ( log ) + log->Flush(); + } + } // only one sink is active at each moment // get current log target, will call wxApp::CreateLogTarget() to @@ -138,13 +163,24 @@ public: // 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 - void SetVerbose(bool bVerbose = TRUE) { m_bVerbose = bVerbose; } + 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() { ms_bAutoCreate = FALSE; } + static void DontCreateOnDemand(); // trace mask (see wxTraceXXX constants for details) static void SetTraceMask(wxTraceMask ulMask) { ms_ulTraceMask = ulMask; } @@ -152,24 +188,32 @@ public: static void AddTraceMask(const wxString& str) { ms_aTraceMasks.Add(str); } // add string trace mask static void RemoveTraceMask(const wxString& str); + // remove all string trace masks + static void ClearTraceMasks(); + // get string trace masks + static const wxArrayString &GetTraceMasks() { return ms_aTraceMasks; } // sets the timestamp string: this is used as strftime() format string // for the log targets which add time stamps to the messages - set it // to NULL to disable time stamping completely. static void SetTimestamp(const wxChar *ts) { ms_timestamp = ts; } + // accessors // gets the verbose status - bool GetVerbose() const { return m_bVerbose; } + static bool GetVerbose() { return ms_bVerbose; } // get trace mask static wxTraceMask GetTraceMask() { return ms_ulTraceMask; } // is this trace mask in the list? static bool IsAllowedTraceMask(const wxChar *mask) { return ms_aTraceMasks.Index(mask) != wxNOT_FOUND; } + // return the current loglevel limit + static wxLogLevel GetLogLevel() { return ms_logLevel; } // get the current timestamp format string (may be NULL) static const wxChar *GetTimestamp() { return ms_timestamp; } + // helpers // put the time stamp into the string if ms_timestamp != NULL (don't // change it otherwise) @@ -178,10 +222,11 @@ public: // make dtor virtual for all derived classes virtual ~wxLog() { } -protected: - bool m_bHasMessages; // any messages in the queue? - bool m_bVerbose; // FALSE => ignore LogInfo messages + // this method exists for backwards compatibility only, don't use + bool HasPendingMessages() const { return TRUE; } + +protected: // 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() @@ -197,6 +242,11 @@ private: 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 @@ -211,13 +261,15 @@ private: // ---------------------------------------------------------------------------- // log everything to a "FILE *", stderr by default -class WXDLLEXPORT wxLogStderr : public wxLog +class WXDLLIMPEXP_BASE wxLogStderr : public wxLog { + DECLARE_NO_COPY_CLASS(wxLogStderr) + public: // redirect log output to a FILE wxLogStderr(FILE *fp = (FILE *) NULL); -private: +protected: // implement sink function virtual void DoLogString(const wxChar *szString, time_t t); @@ -225,148 +277,114 @@ private: }; #if wxUSE_STD_IOSTREAM + // log everything to an "ostream", cerr by default -class WXDLLEXPORT wxLogStream : public wxLog +class WXDLLIMPEXP_BASE wxLogStream : public wxLog { public: // redirect log output to an ostream - wxLogStream(ostream *ostr = (ostream *) NULL); + wxLogStream(wxSTD ostream *ostr = (wxSTD ostream *) NULL); protected: // implement sink function virtual void DoLogString(const wxChar *szString, time_t t); // using ptr here to avoid including from this file - ostream *m_ostr; + wxSTD ostream *m_ostr; }; -#endif -// the following log targets are only compiled in if the we're compiling the -// GUI part (andnot just the base one) of the library, they're implemented in -// src/generic/logg.cpp *and not src/common/log.cpp unlike all the rest) +#endif // wxUSE_STD_IOSTREAM -#ifndef wxUSE_NOGUI +// ---------------------------------------------------------------------------- +// /dev/null log target: suppress logging until this object goes out of scope +// ---------------------------------------------------------------------------- -// log everything to a text window (GUI only of course) -class WXDLLEXPORT wxLogTextCtrl : public wxLog -{ -public: - wxLogTextCtrl(wxTextCtrl *pTextCtrl); +// example of usage: +/* + void Foo() + { + wxFile file; -private: - // implement sink function - virtual void DoLogString(const wxChar *szString, time_t t); + // wxFile.Open() normally complains if file can't be opened, we don't + // want it + wxLogNull logNo; - // the control we use - wxTextCtrl *m_pTextCtrl; -}; + if ( !file.Open("bar") ) + ... process error ourselves ... -// ---------------------------------------------------------------------------- -// GUI log target, the default one for wxWindows programs -// ---------------------------------------------------------------------------- -class WXDLLEXPORT wxLogGui : public wxLog + // ~wxLogNull called, old log sink restored + } + */ +class WXDLLIMPEXP_BASE wxLogNull { public: - // ctor - wxLogGui(); - - // show all messages that were logged since the last Flush() - virtual void Flush(); + wxLogNull() : m_flagOld(wxLog::EnableLogging(FALSE)) { } + ~wxLogNull() { (void)wxLog::EnableLogging(m_flagOld); } -protected: - virtual void DoLog(wxLogLevel level, const wxChar *szString, time_t t); - - // empty everything - void Clear(); - - wxArrayString m_aMessages; - wxArrayLong m_aTimes; - bool m_bErrors, // do we have any errors? - m_bWarnings; // any warnings? +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 wxChar *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; + 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; } - // accessors - // the previous log target (may be NULL) - wxLog *GetOldLog() const { return m_pOldLog; } // are we passing the messages to the previous log target? 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 + // 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); - protected: + // pass the chain to the old logger if needed virtual void DoLog(wxLogLevel level, const wxChar *szString, time_t t); - virtual void DoLogString(const wxChar *szString, time_t t); private: - bool m_bPassMessages; // pass messages to m_pOldLog? - wxLog *m_pOldLog; // previous log target - wxLogFrame *m_pLogFrame; // the log frame -}; - -#endif // wxUSE_NOGUI + // the current log target + wxLog *m_logNew; -// ---------------------------------------------------------------------------- -// /dev/null log target: suppress logging until this object goes out of scope -// ---------------------------------------------------------------------------- + // the previous log target + wxLog *m_logOld; -// example of usage: -/* - void Foo() { - wxFile file; + // do we pass the messages to the old logger? + bool m_bPassMessages; -// wxFile.Open() normally complains if file can't be opened, we don't want it -wxLogNull logNo; -if ( !file.Open("bar") ) -... process error ourselves ... + DECLARE_NO_COPY_CLASS(wxLogChain) +}; -// ~wxLogNull called, old log sink restored -} - */ -class WXDLLEXPORT wxLogNull +// a chain log target which uses itself as the new logger +class WXDLLIMPEXP_BASE wxLogPassThrough : public wxLogChain { public: - wxLogNull() { m_flagOld = wxLog::EnableLogging(FALSE); } - ~wxLogNull() { (void)wxLog::EnableLogging(m_flagOld); } - -private: - bool m_flagOld; // the previous value of the wxLog::ms_doLog + wxLogPassThrough(); }; +#if wxUSE_GUI + // include GUI log targets: + #include "wx/generic/logg.h" +#endif // wxUSE_GUI + // ============================================================================ // global functions // ============================================================================ @@ -376,36 +394,58 @@ private: // for log messages for easy redirection // ---------------------------------------------------------------------------- -// 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 -WXDLLEXPORT unsigned long wxSysErrorCode(); +WXDLLIMPEXP_BASE unsigned long wxSysErrorCode(); + // return the error message for given (or last if 0) error code -WXDLLEXPORT const wxChar* wxSysErrorMsg(unsigned long nErrCode = 0); +WXDLLIMPEXP_BASE const wxChar* wxSysErrorMsg(unsigned long nErrCode = 0); +// ---------------------------------------------------------------------------- // define wxLog -// ------------------- +// ---------------------------------------------------------------------------- -#define DECLARE_LOG_FUNCTION(level) \ -extern void WXDLLEXPORT wxLog##level(const wxChar *szFormat, ...) -#define DECLARE_LOG_FUNCTION2(level, arg1) \ -extern void WXDLLEXPORT wxLog##level(arg1, const wxChar *szFormat, ...) +#define DECLARE_LOG_FUNCTION(level) \ +extern void WXDLLIMPEXP_BASE wxVLog##level(const wxChar *szFormat, \ + va_list argptr); \ +extern void WXDLLIMPEXP_BASE wxLog##level(const wxChar *szFormat, \ + ...) ATTRIBUTE_PRINTF_1 +#define DECLARE_LOG_FUNCTION2_EXP(level, arg, expdecl) \ +extern void expdecl wxVLog##level(arg, const wxChar *szFormat, \ + va_list argptr); \ +extern void expdecl wxLog##level(arg, const wxChar *szFormat, \ + ...) ATTRIBUTE_PRINTF_2 +#define DECLARE_LOG_FUNCTION2(level, arg) \ + DECLARE_LOG_FUNCTION2_EXP(level, arg, WXDLLIMPEXP_BASE) #else // !wxUSE_LOG // log functions do nothing at all -#define DECLARE_LOG_FUNCTION(level) \ -inline void WXDLLEXPORT wxLog##level(const wxChar *szFormat, ...) {} -#define DECLARE_LOG_FUNCTION2(level, arg1) \ -inline void WXDLLEXPORT wxLog##level(arg1, const wxChar *szFormat, ...) {} +#define DECLARE_LOG_FUNCTION(level) \ +inline void wxVLog##level(const wxChar *szFormat, \ + va_list argptr) { } \ +inline void wxLog##level(const wxChar *szFormat, ...) { } +#define DECLARE_LOG_FUNCTION2(level, arg) \ +inline void wxVLog##level(arg, const wxChar *szFormat, \ + va_list argptr) {} \ +inline void wxLog##level(arg, const wxChar *szFormat, ...) { } + +// 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 wxT("") // OLE interface calls #endif // wxUSE_LOG/!wxUSE_LOG @@ -424,9 +464,11 @@ DECLARE_LOG_FUNCTION(Verbose); // 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 + // 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 @@ -437,15 +479,15 @@ DECLARE_LOG_FUNCTION(SysError); DECLARE_LOG_FUNCTION2(SysError, long lErrCode); // debug functions do nothing in release mode -#ifdef __WXDEBUG__ +#if wxUSE_LOG_DEBUG DECLARE_LOG_FUNCTION(Debug); - // first king of LogTrace is uncoditional: it doesn't check the level, + // first kind of LogTrace is unconditional: it doesn't check the level, DECLARE_LOG_FUNCTION(Trace); // this second version will only log the message if the mask had been // added to the list of masks with AddTraceMask() - DECLARE_LOG_FUNCTION2(Trace, const char *mask); + DECLARE_LOG_FUNCTION2(Trace, const wxChar *mask); // the last one does nothing if all of level bits are not set // in wxLog::GetActive()->GetTraceMask() - it's deprecated in favour of @@ -453,35 +495,39 @@ DECLARE_LOG_FUNCTION2(SysError, long lErrCode); DECLARE_LOG_FUNCTION2(Trace, wxTraceMask mask); #else //!debug // these functions do nothing in release builds + inline void wxVLogDebug(const wxChar *, va_list) { } inline void wxLogDebug(const wxChar *, ...) { } + inline void wxVLogTrace(const wxChar *, va_list) { } inline void wxLogTrace(const wxChar *, ...) { } + inline void wxVLogTrace(wxTraceMask, const wxChar *, va_list) { } inline void wxLogTrace(wxTraceMask, const wxChar *, ...) { } + inline void wxVLogTrace(const wxChar *, const wxChar *, va_list) { } inline void wxLogTrace(const wxChar *, const wxChar *, ...) { } #endif // debug/!debug +// 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 // ---------------------------------------------------------------------------- -#ifndef __TFILE__ - #define __XFILE__(x) _T(x) - #define __TFILE__ __XFILE__(__FILE__) -#endif - #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(_T("%s(%d): '%s' failed with error 0x%08lx (%s)."), \ - __TFILE__, __LINE__, api, \ - rc, wxSysErrorMsg(rc)) + #define wxLogApiError(api, rc) \ + wxLogDebug(wxT("%s(%d): '%s' failed with error 0x%08lx (%s)."), \ + __TFILE__, __LINE__, api, \ + (long)rc, wxSysErrorMsg(rc)) #else // !VC++ - #define wxLogApiError(api, rc) \ - wxLogDebug(_T("In file %s at line %d: '%s' failed with " \ - "error 0x%08lx (%s)."), \ - __TFILE__, __LINE__, api, \ - rc, wxSysErrorMsg(rc)) + #define wxLogApiError(api, rc) \ + wxLogDebug(wxT("In file %s at line %d: '%s' failed with " \ + "error 0x%08lx (%s)."), \ + __TFILE__, __LINE__, api, \ + (long)rc, wxSysErrorMsg(rc)) #endif // VC++/!VC++ #define wxLogLastError(api) wxLogApiError(api, wxSysErrorCode()) @@ -492,3 +538,4 @@ DECLARE_LOG_FUNCTION2(SysError, long lErrCode); #endif //debug/!debug #endif // _WX_LOG_H_ +