/////////////////////////////////////////////////////////////////////////////
-// 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 __LOGH__
-#define __LOGH__
+#ifndef _WX_LOG_H_
+#define _WX_LOG_H_
-#ifdef __GNUG__
-#pragma interface "log.h"
+#include "wx/defs.h"
+
+// ----------------------------------------------------------------------------
+// types
+// ----------------------------------------------------------------------------
+
+// NB: this is needed even if wxUSE_LOG == 0
+typedef unsigned long wxLogLevel;
+
+// the trace masks have been superseded by symbolic trace constants, they're
+// for compatibility only and will be removed soon - do NOT use them
+#if WXWIN_COMPATIBILITY_2_8
+ #define wxTraceMemAlloc 0x0001 // trace memory allocation (new/delete)
+ #define wxTraceMessages 0x0002 // trace window messages/X callbacks
+ #define wxTraceResAlloc 0x0004 // trace GDI resource allocation
+ #define wxTraceRefCount 0x0008 // trace various ref counting operations
+
+ #ifdef __WXMSW__
+ #define wxTraceOleCalls 0x0100 // OLE interface calls
+ #endif
+
+ typedef unsigned long wxTraceMask;
+#endif // WXWIN_COMPATIBILITY_2_8
+
+// ----------------------------------------------------------------------------
+// headers
+// ----------------------------------------------------------------------------
+
+#include "wx/string.h"
+#include "wx/strvararg.h"
+
+// ----------------------------------------------------------------------------
+// forward declarations
+// ----------------------------------------------------------------------------
+
+class WXDLLIMPEXP_FWD_BASE wxObject;
+
+#if wxUSE_GUI
+ class WXDLLIMPEXP_FWD_CORE wxFrame;
+#endif // wxUSE_GUI
+
+#if wxUSE_LOG
+
+#include "wx/arrstr.h"
+
+#ifndef __WXPALMOS5__
+#ifndef __WXWINCE__
+ #include <time.h> // for time_t
+#endif
+#endif // ! __WXPALMOS5__
+
+#include "wx/dynarray.h"
+#include "wx/hashmap.h"
+
+#if wxUSE_THREADS
+ #include "wx/thread.h"
+#endif // wxUSE_THREADS
+
+// wxUSE_LOG_DEBUG enables the debug log messages
+#ifndef wxUSE_LOG_DEBUG
+ #if wxDEBUG_LEVEL
+ #define wxUSE_LOG_DEBUG 1
+ #else // !wxDEBUG_LEVEL
+ #define wxUSE_LOG_DEBUG 0
+ #endif
+#endif
+
+// wxUSE_LOG_TRACE enables the trace messages, they are disabled by default
+#ifndef wxUSE_LOG_TRACE
+ #if wxDEBUG_LEVEL
+ #define wxUSE_LOG_TRACE 1
+ #else // !wxDEBUG_LEVEL
+ #define wxUSE_LOG_TRACE 0
+ #endif
+#endif // wxUSE_LOG_TRACE
+
+// wxLOG_COMPONENT identifies the component which generated the log record and
+// can be #define'd to a user-defined value when compiling the user code to use
+// component-based filtering (see wxLog::SetComponentLevel())
+#ifndef wxLOG_COMPONENT
+ // this is a variable and not a macro in order to allow the user code to
+ // just #define wxLOG_COMPONENT without #undef'ining it first
+ extern WXDLLIMPEXP_DATA_BASE(const char *) wxLOG_COMPONENT;
+
+ #ifdef WXBUILDING
+ #define wxLOG_COMPONENT "wx"
+ #endif
#endif
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// different standard log levels (you may also define your own)
-enum
+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_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
+ 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
};
-// meaning of different bits of the trace mask (which allows selectively
-// enable/disable some trace messages)
-#define wxTraceMemAlloc 0x0001 // trace memory allocation (new/delete)
-#define wxTraceMessages 0x0002 // trace window messages/X callbacks
-#define wxTraceResAlloc 0x0004 // trace GDI resource allocation
-#define wxTraceRefCount 0x0008 // trace various ref counting operations
+// 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 wxTraceOleCalls 0x0100 // OLE interface calls
+ #define wxTRACE_OleCalls wxT("ole") // OLE interface calls
#endif
-typedef unsigned long wxTraceMask;
-typedef unsigned long wxLogLevel;
+#include "wx/iosfwrap.h"
+
+// ----------------------------------------------------------------------------
+// information about a log record, i.e. unit of log output
+// ----------------------------------------------------------------------------
+
+class wxLogRecordInfo
+{
+public:
+ // default ctor creates an uninitialized object
+ wxLogRecordInfo()
+ {
+ memset(this, 0, sizeof(*this));
+ }
+
+ // normal ctor, used by wxLogger specifies the location of the log
+ // statement; its time stamp and thread id are set up here
+ wxLogRecordInfo(const char *filename_,
+ int line_,
+ const char *func_,
+ const char *component_)
+ {
+ filename = filename_;
+ func = func_;
+ line = line_;
+ component = component_;
+
+ timestamp = time(NULL);
+
+#if wxUSE_THREADS
+ threadId = wxThread::GetCurrentId();
+#endif // wxUSE_THREADS
+
+ m_data = NULL;
+ }
+
+ // we need to define copy ctor and assignment operator because of m_data
+ wxLogRecordInfo(const wxLogRecordInfo& other)
+ {
+ Copy(other);
+ }
+
+ wxLogRecordInfo& operator=(const wxLogRecordInfo& other)
+ {
+ if ( &other != this )
+ {
+ delete m_data;
+ Copy(other);
+ }
+
+ return *this;
+ }
+
+ // dtor is non-virtual, this class is not meant to be derived from
+ ~wxLogRecordInfo()
+ {
+ delete m_data;
+ }
+
+
+ // the file name and line number of the file where the log record was
+ // generated, if available or NULL and 0 otherwise
+ const char *filename;
+ int line;
+
+ // the name of the function where the log record was generated (may be NULL
+ // if the compiler doesn't support __FUNCTION__)
+ const char *func;
+
+ // the name of the component which generated this message, may be NULL if
+ // not set (i.e. wxLOG_COMPONENT not defined)
+ const char *component;
+
+ // time of record generation
+ time_t timestamp;
+
+#if wxUSE_THREADS
+ // id of the thread which logged this record
+ wxThreadIdType threadId;
+#endif // wxUSE_THREADS
+
+
+ // store an arbitrary value in this record context
+ //
+ // wxWidgets always uses keys starting with "wx.", e.g. "wx.sys_error"
+ void StoreValue(const wxString& key, wxUIntPtr val)
+ {
+ if ( !m_data )
+ m_data = new ExtraData;
+
+ m_data->numValues[key] = val;
+ }
+
+ void StoreValue(const wxString& key, const wxString& val)
+ {
+ if ( !m_data )
+ m_data = new ExtraData;
+
+ m_data->strValues[key] = val;
+ }
+
+
+ // these functions retrieve the value of either numeric or string key,
+ // return false if not found
+ bool GetNumValue(const wxString& key, wxUIntPtr *val) const
+ {
+ if ( !m_data )
+ return false;
+
+ wxStringToNumHashMap::const_iterator it = m_data->numValues.find(key);
+ if ( it == m_data->numValues.end() )
+ return false;
+
+ *val = it->second;
+
+ return true;
+ }
+
+ bool GetStrValue(const wxString& key, wxString *val) const
+ {
+ if ( !m_data )
+ return false;
+
+ wxStringToStringHashMap::const_iterator it = m_data->strValues.find(key);
+ if ( it == m_data->strValues.end() )
+ return false;
+
+ *val = it->second;
+
+ return true;
+ }
+
+private:
+ void Copy(const wxLogRecordInfo& other)
+ {
+ memcpy(this, &other, sizeof(*this));
+ if ( other.m_data )
+ m_data = new ExtraData(*other.m_data);
+ }
+
+ // extra data associated with the log record: this is completely optional
+ // and can be used to pass information from the log function to the log
+ // sink (e.g. wxLogSysError() uses this to pass the error code)
+ struct ExtraData
+ {
+ wxStringToNumHashMap numValues;
+ wxStringToStringHashMap strValues;
+ };
+
+ // NULL if not used
+ ExtraData *m_data;
+};
+
+#define wxLOG_KEY_TRACE_MASK "wx.trace_mask"
+
+// ----------------------------------------------------------------------------
+// log record: a unit of log output
+// ----------------------------------------------------------------------------
+
+struct wxLogRecord
+{
+ wxLogRecord(wxLogLevel level_,
+ const wxString& msg_,
+ const wxLogRecordInfo& info_)
+ : level(level_),
+ msg(msg_),
+ info(info_)
+ {
+ }
+
+ wxLogLevel level;
+ wxString msg;
+ wxLogRecordInfo info;
+};
// ----------------------------------------------------------------------------
// 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)
- { if ( ms_pLogger != 0 ) ms_pLogger->DoLog(level, szString); }
-
- // 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
- static wxLog *GetActiveTarget();
- // change log target, pLogger = NULL disables logging,
- // returns the previous log target
- static wxLog *SetActiveTarget(wxLog *pLogger);
-
- // 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; }
- // trace mask (see wxTraceXXX constants for details)
- static void SetTraceMask(wxTraceMask ulMask) { ms_ulTraceMask = ulMask; }
-
- // accessors
- // gets the verbose status
- bool GetVerbose() const { return m_bVerbose; }
- // get current time format
- const char *GetTimeStampFormat() const { return m_szTimeFormat; }
- // get trace mask
- static wxTraceMask GetTraceMask() { return ms_ulTraceMask; }
-
- // make dtor virtual for all derived classes
- virtual ~wxLog() { }
+ // ctor
+ wxLog() { }
+
+ // make dtor virtual for all derived classes
+ virtual ~wxLog();
+
+
+ // log messages selection
+ // ----------------------
+
+ // these functions allow to completely disable all log messages or disable
+ // log messages at level less important than specified for the current
+ // thread
+
+ // is logging enabled at all now?
+ static bool IsEnabled()
+ {
+#if wxUSE_THREADS
+ if ( !wxThread::IsMain() )
+ return IsThreadLoggingEnabled();
+#endif // wxUSE_THREADS
+
+ return ms_doLog;
+ }
+
+ // change the flag state, return the previous one
+ static bool EnableLogging(bool enable = true)
+ {
+#if wxUSE_THREADS
+ if ( !wxThread::IsMain() )
+ return EnableThreadLogging(enable);
+#endif // wxUSE_THREADS
+
+ bool doLogOld = ms_doLog;
+ ms_doLog = enable;
+ return doLogOld;
+ }
+
+ // return the current global log level
+ static wxLogLevel GetLogLevel() { return ms_logLevel; }
+
+ // set global log level: messages with level > logLevel will not be logged
+ static void SetLogLevel(wxLogLevel logLevel) { ms_logLevel = logLevel; }
+
+ // set the log level for the given component
+ static void SetComponentLevel(const wxString& component, wxLogLevel level);
+
+ // return the effective log level for this component, falling back to
+ // parent component and to the default global log level if necessary
+ //
+ // NB: component argument is passed by value and not const reference in an
+ // attempt to encourage compiler to avoid an extra copy: as we modify
+ // the component internally, we'd create one anyhow and like this it
+ // can be avoided if the string is a temporary anyhow
+ static wxLogLevel GetComponentLevel(wxString component);
+
+
+ // is logging of messages from this component enabled at this level?
+ //
+ // usually always called with wxLOG_COMPONENT as second argument
+ static bool IsLevelEnabled(wxLogLevel level, wxString component)
+ {
+ return IsEnabled() && level <= GetComponentLevel(component);
+ }
+
+
+ // enable/disable messages at wxLOG_Verbose level (only relevant if the
+ // current log level is greater or equal to it)
+ //
+ // notice that verbose mode can be activated by the standard command-line
+ // '--verbose' option
+ static void SetVerbose(bool bVerbose = true) { ms_bVerbose = bVerbose; }
+
+ // check if verbose messages are enabled
+ static bool GetVerbose() { return ms_bVerbose; }
+
+
+ // message buffering
+ // -----------------
+
+ // flush shows all messages if they're not logged immediately (FILE
+ // and iostream logs don't need it, but wxLogGui does to avoid showing
+ // 17 modal dialogs one after another)
+ virtual void Flush();
+
+ // flush the active target if any and also output any pending messages from
+ // background threads
+ static void FlushActive();
+
+ // only one sink is active at each moment get current log target, will call
+ // wxAppTraits::CreateLogTarget() to create one if none exists
+ static wxLog *GetActiveTarget();
+
+ // change log target, logger may be NULL
+ static wxLog *SetActiveTarget(wxLog *logger);
+
+#if wxUSE_THREADS
+ // change log target for the current thread only, shouldn't be called from
+ // the main thread as it doesn't use thread-specific log target
+ static wxLog *SetThreadActiveTarget(wxLog *logger);
+#endif // wxUSE_THREADS
+
+ // 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--; }
+
+ // 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; }
+
+ // 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();
+
+ // 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); }
+
+
+ // is this trace mask in the list?
+ static bool IsAllowedTraceMask(const wxString& mask);
+
+ // get the current timestamp format string (maybe empty)
+ static const wxString& GetTimestamp() { return ms_timestamp; }
+
+
+
+ // helpers: all functions in this section are mostly for internal use only,
+ // don't call them from your code even if they are not formally deprecated
+
+ // put the time stamp into the string if ms_timestamp != NULL (don't
+ // change it otherwise)
+ static void TimeStamp(wxString *str);
+
+ // these methods should only be called from derived classes DoLogRecord(),
+ // DoLogTextAtLevel() and DoLogText() implementations respectively and
+ // shouldn't be called directly, use logging functions instead
+ void LogRecord(wxLogLevel level,
+ const wxString& msg,
+ const wxLogRecordInfo& info)
+ {
+ DoLogRecord(level, msg, info);
+ }
+
+ void LogTextAtLevel(wxLogLevel level, const wxString& msg)
+ {
+ DoLogTextAtLevel(level, msg);
+ }
+
+ void LogText(const wxString& msg)
+ {
+ DoLogText(msg);
+ }
+
+ // this is a helper used by wxLogXXX() functions, don't call it directly
+ // and see DoLog() for function to overload in the derived classes
+ static void OnLog(wxLogLevel level,
+ const wxString& msg,
+ const wxLogRecordInfo& info);
+
+ // version called when no information about the location of the log record
+ // generation is available (but the time stamp is), it mainly exists for
+ // backwards compatibility, don't use it in new code
+ static void OnLog(wxLogLevel level, const wxString& msg, time_t t);
+
+ // a helper calling the above overload with current time
+ static void OnLog(wxLogLevel level, const wxString& msg)
+ {
+ OnLog(level, msg, time(NULL));
+ }
+
+
+ // 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_INLINE(
+ static wxChar *SetLogBuffer(wxChar *, size_t = 0), return NULL;
+ );
+#endif // WXWIN_COMPATIBILITY_2_6
+
+ // don't use integer masks any more, use string trace masks instead
+#if WXWIN_COMPATIBILITY_2_8
+ wxDEPRECATED_INLINE( static void SetTraceMask(wxTraceMask ulMask),
+ ms_ulTraceMask = ulMask; )
+
+ // this one can't be marked deprecated as it's used in our own wxLogger
+ // below but it still is deprecated and shouldn't be used
+ static wxTraceMask GetTraceMask() { return ms_ulTraceMask; }
+#endif // WXWIN_COMPATIBILITY_2_8
protected:
- bool m_bHasMessages;
-
- bool m_bVerbose; // FALSE => ignore LogInfo messages
- const char *m_szTimeFormat; // format for strftime()
-
- // 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);
- // 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);
-
+ // the logging functions that can be overridden: DoLogRecord() is called
+ // for every "record", i.e. a unit of log output, to be logged and by
+ // default formats the message and passes it to DoLogTextAtLevel() which in
+ // turn passes it to DoLogText() by default
+
+ // override this method if you want to change message formatting or do
+ // dynamic filtering
+ virtual void DoLogRecord(wxLogLevel level,
+ const wxString& msg,
+ const wxLogRecordInfo& info);
+
+ // override this method to redirect output to different channels depending
+ // on its level only; if even the level doesn't matter, override
+ // DoLogText() instead
+ virtual void DoLogTextAtLevel(wxLogLevel level, const wxString& msg);
+
+ // this function is not pure virtual as it might not be needed if you do
+ // the logging in overridden DoLogRecord() or DoLogTextAtLevel() directly
+ // but if you do not override them in your derived class you must override
+ // this one as the default implementation of it simply asserts
+ virtual void DoLogText(const wxString& msg);
+
+
+ // the rest of the functions are for backwards compatibility only, don't
+ // use them in new code; if you're updating your existing code you need to
+ // switch to overriding DoLogRecord/Text() above (although as long as these
+ // functions exist, log classes using them will continue to work)
+#if WXWIN_COMPATIBILITY_2_8
+ 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)
+ );
+
+ // these shouldn't be used by new code
+ wxDEPRECATED_BUT_USED_INTERNALLY_INLINE(
+ virtual void DoLogString(const char *WXUNUSED(szString),
+ time_t WXUNUSED(t)),
+ wxEMPTY_PARAMETER_VALUE
+ )
+
+ wxDEPRECATED_BUT_USED_INTERNALLY_INLINE(
+ virtual void DoLogString(const wchar_t *WXUNUSED(wzString),
+ time_t WXUNUSED(t)),
+ wxEMPTY_PARAMETER_VALUE
+ )
+#endif // WXWIN_COMPATIBILITY_2_8
+
+
+ // log a message indicating the number of times the previous message was
+ // repeated if previous repetition counter is strictly positive, does
+ // nothing otherwise; return the old value of repetition counter
+ unsigned LogLastRepeatIfNeeded();
+
private:
- // static variables
- // ----------------
- static wxLog *ms_pLogger; // currently active log sink
- static bool ms_bInitialized; // any log targets created?
- static wxTraceMask ms_ulTraceMask; // controls wxLogTrace behaviour
+#if wxUSE_THREADS
+ // called from FlushActive() to really log any buffered messages logged
+ // from the other threads
+ void FlushThreadMessages();
+
+ // these functions are called for non-main thread only by IsEnabled() and
+ // EnableLogging() respectively
+ static bool IsThreadLoggingEnabled();
+ static bool EnableThreadLogging(bool enable = true);
+#endif // wxUSE_THREADS
+
+ // get the active log target for the main thread, auto-creating it if
+ // necessary
+ //
+ // this is called from GetActiveTarget() and OnLog() when they're called
+ // from the main thread
+ static wxLog *GetMainThreadActiveTarget();
+
+ // called from OnLog() if it's called from the main thread or if we have a
+ // (presumably MT-safe) thread-specific logger and by FlushThreadMessages()
+ // when it plays back the buffered messages logged from the other threads
+ void CallDoLogNow(wxLogLevel level,
+ const wxString& msg,
+ const wxLogRecordInfo& info);
+
+
+ // 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 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 empty, time stamping log messages is
+ // disabled
+ static wxString ms_timestamp;
+
+#if WXWIN_COMPATIBILITY_2_8
+ static wxTraceMask ms_ulTraceMask; // controls wxLogTrace behaviour
+#endif // WXWIN_COMPATIBILITY_2_8
};
// ----------------------------------------------------------------------------
// "trivial" derivations of wxLog
// ----------------------------------------------------------------------------
-// log everything to a "FILE *", stderr by default
-class WXDLLEXPORT wxLogStderr : public wxLog
+// log everything except for the debug/trace messages (which are passed to
+// wxMessageOutputDebug) to a buffer
+class WXDLLIMPEXP_BASE wxLogBuffer : public wxLog
{
public:
- // redirect log output to a FILE
- wxLogStderr(FILE *fp = 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 DoLogTextAtLevel(wxLogLevel level, const wxString& msg);
private:
- // implement sink function
- virtual void DoLogString(const char *szString);
+ wxString m_str;
+
+ wxDECLARE_NO_COPY_CLASS(wxLogBuffer);
+};
+
+
+// log everything to a "FILE *", stderr by default
+class WXDLLIMPEXP_BASE wxLogStderr : public wxLog
+{
+public:
+ // redirect log output to a FILE
+ wxLogStderr(FILE *fp = NULL);
- FILE *m_fp;
+protected:
+ // implement sink function
+ virtual void DoLogText(const wxString& msg);
+
+ FILE *m_fp;
+
+ wxDECLARE_NO_COPY_CLASS(wxLogStderr);
};
+#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 = NULL);
+ // redirect log output to an ostream
+ wxLogStream(wxSTD ostream *ostr = (wxSTD ostream *) NULL);
protected:
- // implement sink function
- virtual void DoLogString(const char *szString);
+ // implement sink function
+ virtual void DoLogText(const wxString& msg);
- // @@ using ptr here to avoid including <iostream.h> from this file
- ostream *m_ostr;
+ // using ptr here to avoid including <iostream.h> from this file
+ wxSTD ostream *m_ostr;
};
-// log everything to a text window (GUI only of course)
-class wxTextCtrl;
-class WXDLLEXPORT wxLogTextCtrl : public wxLogStream
+#endif // wxUSE_STD_IOSTREAM
+
+// ----------------------------------------------------------------------------
+// /dev/null log target: suppress logging until this object goes out of scope
+// ----------------------------------------------------------------------------
+
+// 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 WXDLLIMPEXP_BASE wxLogNull
{
public:
- // we just create an ostream from wxTextCtrl and use it in base class
- wxLogTextCtrl(wxTextCtrl *pTextCtrl);
- ~wxLogTextCtrl();
+ wxLogNull() : m_flagOld(wxLog::EnableLogging(false)) { }
+ ~wxLogNull() { (void)wxLog::EnableLogging(m_flagOld); }
+
+private:
+ bool m_flagOld; // the previous value of the wxLog::ms_doLog
};
// ----------------------------------------------------------------------------
-// GUI log target, the default one for wxWindows programs
+// 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 wxLogGui : public wxLog
+
+class WXDLLIMPEXP_BASE wxLogChain : public wxLog
{
public:
- // ctor
- wxLogGui();
+ 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; }
+
+ // return the previous log target (may be NULL)
+ wxLog *GetOldLog() const { return m_logOld; }
- // show all messages that were logged since the last Flush()
- virtual void Flush();
+ // override base class version to flush the old logger as well
+ virtual void Flush();
+
+ // call to avoid destroying the old log target
+ void DetachOldLog() { m_logOld = NULL; }
protected:
- virtual void DoLog(wxLogLevel level, const char *szString);
+ // pass the record to the old logger if needed
+ virtual void DoLogRecord(wxLogLevel level,
+ const wxString& msg,
+ const wxLogRecordInfo& info);
+
+private:
+ // the current log target
+ wxLog *m_logNew;
- wxArrayString m_aMessages;
- bool m_bErrors;
+ // the previous log target
+ wxLog *m_logOld;
+
+ // do we pass the messages to the old logger?
+ bool m_bPassMessages;
+
+ wxDECLARE_NO_COPY_CLASS(wxLogChain);
};
-// ----------------------------------------------------------------------------
-// (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.
-// ----------------------------------------------------------------------------
-class wxLogFrame;
-class WXDLLEXPORT wxLogWindow : public wxLog
+// a chain log target which uses itself as the new logger
+
+#define wxLogPassThrough wxLogInterposer
+
+class WXDLLIMPEXP_BASE wxLogInterposer : public wxLogChain
{
public:
- wxLogWindow(const char *szTitle, bool bShow = TRUE);
- ~wxLogWindow();
-
- // show/hide the log window
- void Show(bool bShow = TRUE);
+ wxLogInterposer();
- // accessors
- wxLog *GetOldLog() const { return m_pOldLog; }
+private:
+ wxDECLARE_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();
-protected:
- virtual void DoLog(wxLogLevel level, const char *szString);
- virtual void DoLogString(const char *szString);
-
private:
- wxLog *m_pOldLog; // previous log target
- wxLogFrame *m_pLogFrame; // the log frame
+ wxDECLARE_NO_COPY_CLASS(wxLogInterposerTemp);
};
+#if wxUSE_GUI
+ // include GUI log targets:
+ #include "wx/generic/logg.h"
+#endif // wxUSE_GUI
+
// ----------------------------------------------------------------------------
-// /dev/null log target: suppress logging until this object goes out of scope
+// wxLogger
// ----------------------------------------------------------------------------
-// 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
+// wxLogger is a helper class used by wxLogXXX() functions implementation,
+// don't use it directly as it's experimental and subject to change (OTOH it
+// might become public in the future if it's deemed to be useful enough)
+
+// contains information about the context from which a log message originates
+// and provides Log() vararg method which forwards to wxLog::OnLog() and passes
+// this context to it
+class wxLogger
{
public:
- // ctor saves old log target, dtor restores it
- wxLogNull() { m_pPrevLogger = wxLog::SetActiveTarget(NULL); }
- ~wxLogNull() { (void)wxLog::SetActiveTarget(m_pPrevLogger); }
+ // ctor takes the basic information about the log record
+ wxLogger(wxLogLevel level,
+ const char *filename,
+ int line,
+ const char *func,
+ const char *component)
+ : m_level(level),
+ m_info(filename, line, func, component)
+ {
+ }
+
+ // store extra data in our log record and return this object itself (so
+ // that further calls to its functions could be chained)
+ template <typename T>
+ wxLogger& Store(const wxString& key, T val)
+ {
+ m_info.StoreValue(key, val);
+ return *this;
+ }
+
+ // hack for "overloaded" wxLogXXX() functions: calling this method
+ // indicates that we may have an extra first argument preceding the format
+ // string and that if we do have it, we should store it in m_info using the
+ // given key (while by default 0 value will be used)
+ wxLogger& MaybeStore(const wxString& key, wxUIntPtr value = 0)
+ {
+ wxASSERT_MSG( m_optKey.empty(), "can only have one optional value" );
+ m_optKey = key;
+
+ m_info.StoreValue(key, value);
+ return *this;
+ }
+
+
+ // non-vararg function used by wxVLogXXX():
+
+ // log the message at the level specified in the ctor if this log message
+ // is enabled
+ void LogV(const wxString& format, va_list argptr)
+ {
+ // remember that fatal errors can't be disabled
+ if ( m_level == wxLOG_FatalError ||
+ wxLog::IsLevelEnabled(m_level, m_info.component) )
+ DoCallOnLog(format, argptr);
+ }
+
+ // overloads used by functions with optional leading arguments (whose
+ // values are stored in the key passed to MaybeStore())
+ void LogV(long num, const wxString& format, va_list argptr)
+ {
+ Store(m_optKey, num);
+
+ LogV(format, argptr);
+ }
+
+ void LogV(void *ptr, const wxString& format, va_list argptr)
+ {
+ Store(m_optKey, wxPtrToUInt(ptr));
+
+ LogV(format, argptr);
+ }
+
+ void LogVTrace(const wxString& mask, const wxString& format, va_list argptr)
+ {
+ if ( !wxLog::IsAllowedTraceMask(mask) )
+ return;
+
+ Store(wxLOG_KEY_TRACE_MASK, mask);
+
+ LogV(format, argptr);
+ }
+
+
+ // vararg functions used by wxLogXXX():
+
+ // will log the message at the level specified in the ctor
+ //
+ // notice that this function supposes that the caller already checked that
+ // the level was enabled and does no checks itself
+ WX_DEFINE_VARARG_FUNC_VOID
+ (
+ Log,
+ 1, (const wxFormatString&),
+ DoLog, DoLogUtf8
+ )
+
+ // same as Log() but with an extra numeric or pointer parameters: this is
+ // used to pass an optional value by storing it in m_info under the name
+ // passed to MaybeStore() and is required to support "overloaded" versions
+ // of wxLogStatus() and wxLogSysError()
+ WX_DEFINE_VARARG_FUNC_VOID
+ (
+ Log,
+ 2, (long, const wxFormatString&),
+ DoLogWithNum, DoLogWithNumUtf8
+ )
+
+ // unfortunately we can't use "void *" here as we get overload ambiguities
+ // with Log(wxFormatString, ...) when the first argument is a "char *" or
+ // "wchar_t *" then -- so we only allow passing wxObject here, which is
+ // ugly but fine in practice as this overload is only used by wxLogStatus()
+ // whose first argument is a wxFrame
+ WX_DEFINE_VARARG_FUNC_VOID
+ (
+ Log,
+ 2, (wxObject *, const wxFormatString&),
+ DoLogWithPtr, DoLogWithPtrUtf8
+ )
+
+ // log the message at the level specified as its first argument
+ //
+ // as the macros don't have access to the level argument in this case, this
+ // function does check that the level is enabled itself
+ WX_DEFINE_VARARG_FUNC_VOID
+ (
+ LogAtLevel,
+ 2, (wxLogLevel, const wxFormatString&),
+ DoLogAtLevel, DoLogAtLevelUtf8
+ )
+
+ // special versions for wxLogTrace() which is passed either string or
+ // integer mask as first argument determining whether the message should be
+ // logged or not
+ WX_DEFINE_VARARG_FUNC_VOID
+ (
+ LogTrace,
+ 2, (const wxString&, const wxFormatString&),
+ DoLogTrace, DoLogTraceUtf8
+ )
+
+#if WXWIN_COMPATIBILITY_2_8
+ WX_DEFINE_VARARG_FUNC_VOID
+ (
+ LogTrace,
+ 2, (wxTraceMask, const wxFormatString&),
+ DoLogTraceMask, DoLogTraceMaskUtf8
+ )
+#endif // WXWIN_COMPATIBILITY_2_8
+
+#ifdef __WATCOMC__
+ // workaround for http://bugzilla.openwatcom.org/show_bug.cgi?id=351
+ WX_VARARG_WATCOM_WORKAROUND(void, Log,
+ 1, (const wxString&),
+ (wxFormatString(f1)))
+ WX_VARARG_WATCOM_WORKAROUND(void, Log,
+ 1, (const wxCStrData&),
+ (wxFormatString(f1)))
+ WX_VARARG_WATCOM_WORKAROUND(void, Log,
+ 1, (const char*),
+ (wxFormatString(f1)))
+ WX_VARARG_WATCOM_WORKAROUND(void, Log,
+ 1, (const wchar_t*),
+ (wxFormatString(f1)))
+
+ WX_VARARG_WATCOM_WORKAROUND(void, Log,
+ 2, (long, const wxString&),
+ (f1, wxFormatString(f2)))
+ WX_VARARG_WATCOM_WORKAROUND(void, Log,
+ 2, (long, const wxCStrData&),
+ (f1, wxFormatString(f2)))
+ WX_VARARG_WATCOM_WORKAROUND(void, Log,
+ 2, (long, const char *),
+ (f1, wxFormatString(f2)))
+ WX_VARARG_WATCOM_WORKAROUND(void, Log,
+ 2, (long, const wchar_t *),
+ (f1, wxFormatString(f2)))
+
+ WX_VARARG_WATCOM_WORKAROUND(void, Log,
+ 2, (wxObject *, const wxString&),
+ (f1, wxFormatString(f2)))
+ WX_VARARG_WATCOM_WORKAROUND(void, Log,
+ 2, (wxObject *, const wxCStrData&),
+ (f1, wxFormatString(f2)))
+ WX_VARARG_WATCOM_WORKAROUND(void, Log,
+ 2, (wxObject *, const char *),
+ (f1, wxFormatString(f2)))
+ WX_VARARG_WATCOM_WORKAROUND(void, Log,
+ 2, (wxObject *, const wchar_t *),
+ (f1, wxFormatString(f2)))
+
+ WX_VARARG_WATCOM_WORKAROUND(void, LogAtLevel,
+ 2, (wxLogLevel, const wxString&),
+ (f1, wxFormatString(f2)))
+ WX_VARARG_WATCOM_WORKAROUND(void, LogAtLevel,
+ 2, (wxLogLevel, const wxCStrData&),
+ (f1, wxFormatString(f2)))
+ WX_VARARG_WATCOM_WORKAROUND(void, LogAtLevel,
+ 2, (wxLogLevel, const char *),
+ (f1, wxFormatString(f2)))
+ WX_VARARG_WATCOM_WORKAROUND(void, LogAtLevel,
+ 2, (wxLogLevel, const wchar_t *),
+ (f1, wxFormatString(f2)))
+
+ WX_VARARG_WATCOM_WORKAROUND(void, LogTrace,
+ 2, (const wxString&, const wxString&),
+ (f1, wxFormatString(f2)))
+ WX_VARARG_WATCOM_WORKAROUND(void, LogTrace,
+ 2, (const wxString&, const wxCStrData&),
+ (f1, wxFormatString(f2)))
+ WX_VARARG_WATCOM_WORKAROUND(void, LogTrace,
+ 2, (const wxString&, const char *),
+ (f1, wxFormatString(f2)))
+ WX_VARARG_WATCOM_WORKAROUND(void, LogTrace,
+ 2, (const wxString&, const wchar_t *),
+ (f1, wxFormatString(f2)))
+
+#if WXWIN_COMPATIBILITY_2_8
+ WX_VARARG_WATCOM_WORKAROUND(void, LogTrace,
+ 2, (wxTraceMask, wxTraceMask),
+ (f1, wxFormatString(f2)))
+ WX_VARARG_WATCOM_WORKAROUND(void, LogTrace,
+ 2, (wxTraceMask, const wxCStrData&),
+ (f1, wxFormatString(f2)))
+ WX_VARARG_WATCOM_WORKAROUND(void, LogTrace,
+ 2, (wxTraceMask, const char *),
+ (f1, wxFormatString(f2)))
+ WX_VARARG_WATCOM_WORKAROUND(void, LogTrace,
+ 2, (wxTraceMask, const wchar_t *),
+ (f1, wxFormatString(f2)))
+#endif // WXWIN_COMPATIBILITY_2_8
+#endif // __WATCOMC__
private:
- wxLog *m_pPrevLogger; // old log target
+#if !wxUSE_UTF8_LOCALE_ONLY
+ void DoLog(const wxChar *format, ...)
+ {
+ va_list argptr;
+ va_start(argptr, format);
+ DoCallOnLog(format, argptr);
+ va_end(argptr);
+ }
+
+ void DoLogWithNum(long num, const wxChar *format, ...)
+ {
+ Store(m_optKey, num);
+
+ va_list argptr;
+ va_start(argptr, format);
+ DoCallOnLog(format, argptr);
+ va_end(argptr);
+ }
+
+ void DoLogWithPtr(void *ptr, const wxChar *format, ...)
+ {
+ Store(m_optKey, wxPtrToUInt(ptr));
+
+ va_list argptr;
+ va_start(argptr, format);
+ DoCallOnLog(format, argptr);
+ va_end(argptr);
+ }
+
+ void DoLogAtLevel(wxLogLevel level, const wxChar *format, ...)
+ {
+ if ( !wxLog::IsLevelEnabled(level, m_info.component) )
+ return;
+
+ va_list argptr;
+ va_start(argptr, format);
+ DoCallOnLog(level, format, argptr);
+ va_end(argptr);
+ }
+
+ void DoLogTrace(const wxString& mask, const wxChar *format, ...)
+ {
+ if ( !wxLog::IsAllowedTraceMask(mask) )
+ return;
+
+ Store(wxLOG_KEY_TRACE_MASK, mask);
+
+ va_list argptr;
+ va_start(argptr, format);
+ DoCallOnLog(format, argptr);
+ va_end(argptr);
+ }
+
+#if WXWIN_COMPATIBILITY_2_8
+ void DoLogTraceMask(wxTraceMask mask, const wxChar *format, ...)
+ {
+ if ( (wxLog::GetTraceMask() & mask) != mask )
+ return;
+
+ Store(wxLOG_KEY_TRACE_MASK, mask);
+
+ va_list argptr;
+ va_start(argptr, format);
+ DoCallOnLog(format, argptr);
+ va_end(argptr);
+ }
+#endif // WXWIN_COMPATIBILITY_2_8
+#endif // !wxUSE_UTF8_LOCALE_ONLY
+
+#if wxUSE_UNICODE_UTF8
+ void DoLogUtf8(const char *format, ...)
+ {
+ va_list argptr;
+ va_start(argptr, format);
+ DoCallOnLog(format, argptr);
+ va_end(argptr);
+ }
+
+ void DoLogWithNumUtf8(long num, const char *format, ...)
+ {
+ Store(m_optKey, num);
+
+ va_list argptr;
+ va_start(argptr, format);
+ DoCallOnLog(format, argptr);
+ va_end(argptr);
+ }
+
+ void DoLogWithPtrUtf8(void *ptr, const char *format, ...)
+ {
+ Store(m_optKey, wxPtrToUInt(ptr));
+
+ va_list argptr;
+ va_start(argptr, format);
+ DoCallOnLog(format, argptr);
+ va_end(argptr);
+ }
+
+ void DoLogAtLevelUtf8(wxLogLevel level, const char *format, ...)
+ {
+ if ( !wxLog::IsLevelEnabled(level, m_info.component) )
+ return;
+
+ va_list argptr;
+ va_start(argptr, format);
+ DoCallOnLog(level, format, argptr);
+ va_end(argptr);
+ }
+
+ void DoLogTraceUtf8(const wxString& mask, const char *format, ...)
+ {
+ if ( !wxLog::IsAllowedTraceMask(mask) )
+ return;
+
+ Store(wxLOG_KEY_TRACE_MASK, mask);
+
+ va_list argptr;
+ va_start(argptr, format);
+ DoCallOnLog(format, argptr);
+ va_end(argptr);
+ }
+
+#if WXWIN_COMPATIBILITY_2_8
+ void DoLogTraceMaskUtf8(wxTraceMask mask, const char *format, ...)
+ {
+ if ( (wxLog::GetTraceMask() & mask) != mask )
+ return;
+
+ Store(wxLOG_KEY_TRACE_MASK, mask);
+
+ va_list argptr;
+ va_start(argptr, format);
+ DoCallOnLog(format, argptr);
+ va_end(argptr);
+ }
+#endif // WXWIN_COMPATIBILITY_2_8
+#endif // wxUSE_UNICODE_UTF8
+
+ void DoCallOnLog(wxLogLevel level, const wxString& format, va_list argptr)
+ {
+ wxLog::OnLog(level, wxString::FormatV(format, argptr), m_info);
+ }
+
+ void DoCallOnLog(const wxString& format, va_list argptr)
+ {
+ DoCallOnLog(m_level, format, argptr);
+ }
+
+
+ const wxLogLevel m_level;
+ wxLogRecordInfo m_info;
+
+ wxString m_optKey;
+
+ wxDECLARE_NO_COPY_CLASS(wxLogger);
};
// ============================================================================
// ============================================================================
// ----------------------------------------------------------------------------
-// Log functions should be used by application instead of stdio, iostream &c
-// 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>() functions which can be used by application instead of
+// stdio, iostream &c for log messages for easy redirection
// ----------------------------------------------------------------------------
-// define wxLog<level>
-// -------------------
-
-#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, ...)
-
-// a generic function for all levels (level is passes as parameter)
-DECLARE_LOG_FUNCTION2(Generic, wxLogLevel level);
-
-// one function per each level
-DECLARE_LOG_FUNCTION(FatalError);
-DECLARE_LOG_FUNCTION(Error);
-DECLARE_LOG_FUNCTION(Warning);
-DECLARE_LOG_FUNCTION(Message);
-DECLARE_LOG_FUNCTION(Info);
-DECLARE_LOG_FUNCTION(Status);
-DECLARE_LOG_FUNCTION(Verbose);
-
-// additional one: as wxLogError, but also logs last system call error code
-// and the corresponding error message if available
-DECLARE_LOG_FUNCTION(SysError);
-
-// 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);
-
-// 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 *, ...) { }
+/*
+ The code below is unreadable because it (unfortunately unavoidably)
+ contains a lot of macro magic but all it does is to define wxLogXXX() such
+ that you can call them as vararg functions to log a message at the
+ corresponding level.
+
+ More precisely, it defines:
+
+ - wxLog{FatalError,Error,Warning,Message,Verbose,Debug}() functions
+ taking the format string and additional vararg arguments if needed.
+ - wxLogGeneric(wxLogLevel level, const wxString& format, ...) which
+ takes the log level explicitly.
+ - wxLogSysError(const wxString& format, ...) and wxLogSysError(long
+ err, const wxString& format, ...) which log a wxLOG_Error severity
+ message with the error message corresponding to the system error code
+ err or the last error.
+ - wxLogStatus(const wxString& format, ...) which logs the message into
+ the status bar of the main application window and its overload
+ wxLogStatus(wxFrame *frame, const wxString& format, ...) which logs it
+ into the status bar of the specified frame.
+ - wxLogTrace(Mask mask, const wxString& format, ...) which only logs
+ the message is the specified mask is enabled. This comes in two kinds:
+ Mask can be a wxString or a long. Both are deprecated.
+
+ In addition, wxVLogXXX() versions of all the functions above are also
+ defined. They take a va_list argument instead of "...".
+ */
+
+// creates wxLogger object for the current location
+#define wxMAKE_LOGGER(level) \
+ wxLogger(wxLOG_##level, __FILE__, __LINE__, __WXFUNCTION__, wxLOG_COMPONENT)
+
+// this macro generates the expression which logs whatever follows it in
+// parentheses at the level specified as argument
+#define wxDO_LOG(level) wxMAKE_LOGGER(level).Log
+
+// this is the non-vararg equivalent
+#define wxDO_LOGV(level, format, argptr) \
+ wxMAKE_LOGGER(level).LogV(format, argptr)
+
+// this macro declares wxLog<level>() macro which logs whatever follows it if
+// logging at specified level is enabled (notice that if it is false, the
+// following arguments are not even evaluated which is good as it avoids
+// unnecessary overhead)
+//
+// Note: the strange if/else construct is needed to make the following code
+//
+// if ( cond )
+// wxLogError("!!!");
+// else
+// ...
+//
+// work as expected, without it the second "else" would match the "if"
+// inside wxLogError(). Unfortunately code like
+//
+// if ( cond )
+// wxLogError("!!!");
+//
+// now provokes "suggest explicit braces to avoid ambiguous 'else'"
+// warnings from g++ 4.3 and later with -Wparentheses on but they can be
+// easily fixed by adding curly braces around wxLogError() and at least
+// the code still does do the right thing.
+#define wxDO_LOG_IF_ENABLED(level) \
+ if ( !wxLog::IsLevelEnabled(wxLOG_##level, wxLOG_COMPONENT) ) \
+ {} \
+ else \
+ wxDO_LOG(level)
+
+// wxLogFatalError() is special as it can't be disabled
+#define wxLogFatalError wxDO_LOG(FatalError)
+#define wxVLogFatalError(format, argptr) wxDO_LOGV(FatalError, format, argptr)
+
+#define wxLogError wxDO_LOG_IF_ENABLED(Error)
+#define wxVLogError(format, argptr) wxDO_LOGV(Error, format, argptr)
+
+#define wxLogWarning wxDO_LOG_IF_ENABLED(Warning)
+#define wxVLogWarning(format, argptr) wxDO_LOGV(Warning, format, argptr)
+
+#define wxLogMessage wxDO_LOG_IF_ENABLED(Message)
+#define wxVLogMessage(format, argptr) wxDO_LOGV(Message, format, argptr)
+
+// this one is special as it only logs if we're in verbose mode
+#define wxLogVerbose \
+ if ( !(wxLog::IsLevelEnabled(wxLOG_Info, wxLOG_COMPONENT) && \
+ wxLog::GetVerbose()) ) \
+ {} \
+ else \
+ wxDO_LOG(Info)
+#define wxVLogVerbose(format, argptr) \
+ if ( !(wxLog::IsLevelEnabled(wxLOG_Info, wxLOG_COMPONENT) && \
+ wxLog::GetVerbose()) ) \
+ {} \
+ else \
+ wxDO_LOGV(Info, format, argptr)
+
+// deprecated synonyms for wxLogVerbose() and wxVLogVerbose()
+#define wxLogInfo wxLogVerbose
+#define wxVLogInfo wxVLogVerbose
+
+
+// another special case: the level is passed as first argument of the function
+// and so is not available to the macro
+//
+// notice that because of this, arguments of wxLogGeneric() are currently
+// always evaluated, unlike for the other log functions
+#define wxLogGeneric wxMAKE_LOGGER(Max).LogAtLevel
+#define wxVLogGeneric(level, format, argptr) \
+ if ( !wxLog::IsLevelEnabled(wxLOG_##level, wxLOG_COMPONENT) ) \
+ {} \
+ else \
+ wxDO_LOGV(level, format, argptr)
+
+
+// wxLogSysError() needs to stash the error code value in the log record info
+// so it needs special handling too; additional complications arise because the
+// error code may or not be present as the first argument
+//
+// notice that we unfortunately can't avoid the call to wxSysErrorCode() even
+// though it may be unneeded if an explicit error code is passed to us because
+// the message might not be logged immediately (e.g. it could be queued for
+// logging from the main thread later) and so we can't to wait until it is
+// logged to determine whether we have last error or not as it will be too late
+// and it will have changed already by then (in fact it even changes when
+// wxString::Format() is called because of vsnprintf() inside it so it can
+// change even much sooner)
+#define wxLOG_KEY_SYS_ERROR_CODE "wx.sys_error"
+
+#define wxLogSysError \
+ if ( !wxLog::IsLevelEnabled(wxLOG_Error, wxLOG_COMPONENT) ) \
+ {} \
+ else \
+ wxMAKE_LOGGER(Error).MaybeStore(wxLOG_KEY_SYS_ERROR_CODE, \
+ wxSysErrorCode()).Log
+
+// unfortunately we can't have overloaded macros so we can't define versions
+// both with and without error code argument and have to rely on LogV()
+// overloads in wxLogger to select between them
+#define wxVLogSysError \
+ wxMAKE_LOGGER(Error).MaybeStore(wxLOG_KEY_SYS_ERROR_CODE, \
+ wxSysErrorCode()).LogV
+
+#if wxUSE_GUI
+ // wxLogStatus() is similar to wxLogSysError() as it allows to optionally
+ // specify the frame to which the message should go
+ #define wxLOG_KEY_FRAME "wx.frame"
+
+ #define wxLogStatus \
+ if ( !wxLog::IsLevelEnabled(wxLOG_Status, wxLOG_COMPONENT) ) \
+ {} \
+ else \
+ wxMAKE_LOGGER(Status).MaybeStore(wxLOG_KEY_FRAME).Log
+
+ #define wxVLogStatus(format, argptr) \
+ wxMAKE_LOGGER(Status).MaybeStore(wxLOG_KEY_FRAME).LogV
+#endif // wxUSE_GUI
+
+
+#else // !wxUSE_LOG
+
+#undef wxUSE_LOG_DEBUG
+#define wxUSE_LOG_DEBUG 0
+
+#undef wxUSE_LOG_TRACE
+#define wxUSE_LOG_TRACE 0
+
+#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
+// define macros for defining log functions which do nothing at all
+//
+// WX_WATCOM_ONLY_CODE is needed to work around
+// http://bugzilla.openwatcom.org/show_bug.cgi?id=351
+#define wxDEFINE_EMPTY_LOG_FUNCTION(level) \
+ WX_DEFINE_VARARG_FUNC_NOP(wxLog##level, 1, (const wxFormatString&)) \
+ 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 wxFormatString& WXUNUSED(format), \
+ va_list WXUNUSED(argptr)) { } \
-// 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;
+#define wxDEFINE_EMPTY_LOG_FUNCTION2(level, argclass) \
+ WX_DEFINE_VARARG_FUNC_NOP(wxLog##level, 2, (argclass, const wxFormatString&)) \
+ 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 wxFormatString& WXUNUSED(format), \
+ va_list WXUNUSED(argptr)) {}
-// fwd decl to avoid including iostream.h here
-class ostream;
+wxDEFINE_EMPTY_LOG_FUNCTION(FatalError);
+wxDEFINE_EMPTY_LOG_FUNCTION(Error);
+wxDEFINE_EMPTY_LOG_FUNCTION(SysError);
+wxDEFINE_EMPTY_LOG_FUNCTION2(SysError, long);
+wxDEFINE_EMPTY_LOG_FUNCTION(Warning);
+wxDEFINE_EMPTY_LOG_FUNCTION(Message);
+wxDEFINE_EMPTY_LOG_FUNCTION(Info);
+wxDEFINE_EMPTY_LOG_FUNCTION(Verbose);
-// ----------------------------------------------------------------------------
-// get error code/error message from system in a portable way
-// ----------------------------------------------------------------------------
+wxDEFINE_EMPTY_LOG_FUNCTION2(Generic, wxLogLevel);
-// 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);
+#if wxUSE_GUI
+ wxDEFINE_EMPTY_LOG_FUNCTION(Status);
+ wxDEFINE_EMPTY_LOG_FUNCTION2(Status, wxFrame *);
+#endif // wxUSE_GUI
+
+// 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
+
+
+// debug functions can be completely disabled in optimized builds
+
+// if these log functions are disabled, we prefer to define them as (empty)
+// variadic macros as this completely removes them and their argument
+// evaluation from the object code but if this is not supported by compiler we
+// use empty inline functions instead (defining them as nothing would result in
+// compiler warnings)
+//
+// 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
+#ifdef __BORLANDC__
+ // but Borland gives "W8019: Code has no effect" for wxLogNop() so we need
+ // to define it differently for it to avoid these warnings (same problem as
+ // with wxUnusedVar())
+ #define wxLogNop() { }
+#else
+ inline void wxLogNop() { }
+#endif
+
+#if wxUSE_LOG_DEBUG
+ #define wxLogDebug wxDO_LOG_IF_ENABLED(Debug)
+ #define wxVLogDebug(format, argptr) wxDO_LOGV(Debug, format, argptr)
+#else // !wxUSE_LOG_DEBUG
+ #define wxVLogDebug(fmt, valist) wxLogNop()
+
+ #ifdef HAVE_VARIADIC_MACROS
+ #define wxLogDebug(fmt, ...) wxLogNop()
+ #else // !HAVE_VARIADIC_MACROS
+ WX_DEFINE_VARARG_FUNC_NOP(wxLogDebug, 1, (const wxFormatString&))
+ #endif
+#endif // wxUSE_LOG_DEBUG/!wxUSE_LOG_DEBUG
+
+#if wxUSE_LOG_TRACE
+ #define wxLogTrace \
+ if ( !wxLog::IsLevelEnabled(wxLOG_Trace, wxLOG_COMPONENT) ) \
+ {} \
+ else \
+ wxMAKE_LOGGER(Trace).LogTrace
+ #define wxVLogTrace \
+ if ( !wxLog::IsLevelEnabled(wxLOG_Trace, wxLOG_COMPONENT) ) \
+ {} \
+ else \
+ wxMAKE_LOGGER(Trace).LogVTrace
+#else // !wxUSE_LOG_TRACE
+ #define wxVLogTrace(mask, fmt, valist) wxLogNop()
+
+ #ifdef HAVE_VARIADIC_MACROS
+ #define wxLogTrace(mask, fmt, ...) wxLogNop()
+ #else // !HAVE_VARIADIC_MACROS
+ #if WXWIN_COMPATIBILITY_2_8
+ WX_DEFINE_VARARG_FUNC_NOP(wxLogTrace, 2, (wxTraceMask, const wxFormatString&))
+ #endif
+ WX_DEFINE_VARARG_FUNC_NOP(wxLogTrace, 2, (const wxString&, const wxFormatString&))
+ #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 // wxUSE_LOG_TRACE/!wxUSE_LOG_TRACE
+
+// 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())
-#else //!debug
- inline void wxLogApiError(const char *, long) { }
- inline void wxLogLastError(const char *) { }
-#endif //debug/!debug
-
-#endif //__LOGH__
+#if wxUSE_LOG_DEBUG
+ // 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 // !wxUSE_LOG_DEBUG
+ #define wxLogApiError(api, err) wxLogNop()
+ #define wxLogLastError(api) wxLogNop()
+#endif // wxUSE_LOG_DEBUG/!wxUSE_LOG_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
+
+// macro which disables debug logging in release builds: this is done by
+// default by IMPLEMENT_APP() so usually it doesn't need to be used explicitly
+#ifdef NDEBUG
+ #define wxDISABLE_DEBUG_LOGGING_IN_RELEASE_BUILD() \
+ wxLog::SetLogLevel(wxLOG_Info)
+#else // !NDEBUG
+ #define wxDISABLE_DEBUG_LOGGING_IN_RELEASE_BUILD()
+#endif // NDEBUG/!NDEBUG
+
+#endif // _WX_LOG_H_
+
projects / wxWidgets.git / blobdiff