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rippled/modules/beast_core/logging/Logger.h
2013-09-23 10:13:24 -07:00

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3.3 KiB
C++

//------------------------------------------------------------------------------
/*
This file is part of Beast: https://github.com/vinniefalco/Beast
Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
Portions of this file are from JUCE.
Copyright (c) 2013 - Raw Material Software Ltd.
Please visit http://www.juce.com
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
//==============================================================================
#ifndef BEAST_LOGGER_H_INCLUDED
#define BEAST_LOGGER_H_INCLUDED
//==============================================================================
/**
Acts as an application-wide logging class.
A subclass of Logger can be created and passed into the Logger::setCurrentLogger
method and this will then be used by all calls to writeToLog.
The logger class also contains methods for writing messages to the debugger's
output stream.
@see FileLogger
*/
class BEAST_API Logger
{
public:
//==============================================================================
/** Destructor. */
virtual ~Logger();
//==============================================================================
/** Sets the current logging class to use.
Note that the object passed in will not be owned or deleted by the logger, so
the caller must make sure that it is not deleted while still being used.
A null pointer can be passed-in to disable any logging.
*/
static void BEAST_CALLTYPE setCurrentLogger (Logger* newLogger) noexcept;
/** Returns the current logger, or nullptr if none has been set. */
static Logger* getCurrentLogger() noexcept;
/** Writes a string to the current logger.
This will pass the string to the logger's logMessage() method if a logger
has been set.
@see logMessage
*/
static void BEAST_CALLTYPE writeToLog (const String& message);
//==============================================================================
/** Writes a message to the standard error stream.
This can be called directly, or by using the DBG() macro in
CompilerConfig.h (which will avoid calling the method in non-debug builds).
*/
static void BEAST_CALLTYPE outputDebugString (const String& text);
protected:
//==============================================================================
Logger();
/** This is overloaded by subclasses to implement custom logging behaviour.
@see setCurrentLogger
*/
virtual void logMessage (const String& message) = 0;
private:
static Logger* currentLogger;
};
#endif // BEAST_LOGGER_H_INCLUDED