barrier/lib/base/LogOutputters.h

/*
 * synergy -- mouse and keyboard sharing utility
 * Copyright (C) 2002 Chris Schoeneman
 * 
 * This package is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * found in the file COPYING that should have accompanied this file.
 * 
 * This package is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#ifndef LOGOUTPUTTERS_H
#define LOGOUTPUTTERS_H

#include "ILogOutputter.h"

//! Stop traversing log chain outputter
/*!
This outputter performs no output and returns false from \c write(),
causing the logger to stop traversing the outputter chain.  Insert
this to prevent already inserted outputters from writing.
*/
class CStopLogOutputter : public ILogOutputter {
public:
	CStopLogOutputter();
	virtual ~CStopLogOutputter();

	// ILogOutputter overrides
	virtual void		open(const char* title);
	virtual void		close();
	virtual bool		write(ELevel level, const char* message);
	virtual const char*	getNewline() const;
};

//! Write log to console
/*!
This outputter writes output to the console.  The level for each
message is ignored.
*/
class CConsoleLogOutputter : public ILogOutputter {
public:
	CConsoleLogOutputter();
	virtual ~CConsoleLogOutputter();

	// ILogOutputter overrides
	virtual void		open(const char* title);
	virtual void		close();
	virtual bool		write(ELevel level, const char* message);
	virtual const char*	getNewline() const;
};

//! Write log to system log
/*!
This outputter writes output to the system log.
*/
class CSystemLogOutputter : public ILogOutputter {
public:
	CSystemLogOutputter();
	virtual ~CSystemLogOutputter();

	// ILogOutputter overrides
	virtual void		open(const char* title);
	virtual void		close();
	virtual bool		write(ELevel level, const char* message);
	virtual const char*	getNewline() const;
};

#endif