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/* NewNet - A networking framework in C++
Copyright (C) 2006-2007 Ingmar K. Steen (iksteen@gmail.com)
Copyright 2008 little blue poney <lbponey@users.sourceforge.net>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program 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.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef NEWNET_LOG_H
#define NEWNET_LOG_H
#include <string>
#include <vector>
#include <iostream>
#include "nnevent.h"
namespace NewNet
{
//! Controllable logging class
/*! This class will let you output messages to the console in a controlled
fashion. It works by enabling and disabling domains where events
can happen. */
class Log {
public:
typedef struct
{
std::string domain;
std::string message;
} LogNotify;
//! Print a message.
/*! Print a message if the specified domain is enabled. */
void operator() (const std::string & domain, const char*, ...);
//! Enable a message domain.
/*! This will enable printing messages of that domain. A special
case is 'ALL' in which case all messages will be printed. */
void enable(const std::string & domain);
//! Disable a message domain.
/*! This will disable printing messages of that domain. */
void disable(const std::string & domain);
//! Invoked when a message is logged.
/*! This will be invoked when a message is logged in a domain that's
enabled. */
NewNet::Event<const LogNotify *> logEvent;
private:
bool m_AllEnabled;
std::vector<std::string> m_EnabledDomains;
};
//! Console output class.
/*! Connect an instance of this class to Log's logEvent event to output
log messages to stderr. */
class ConsoleOutput : public Event<const Log::LogNotify *>::Callback
{
public:
#ifndef DOXYGEN_UNDOCUMENTED
void operator()(const Log::LogNotify * notice)
{
std::cout << "[" << notice->domain << "] " << notice->message << std::endl;
}
#endif
};
//! Global logger instance.
/*! Global logger instance, you can also reference this using the convenient
NNLOG preprocessor definition. */
extern Log log;
}
#define NNLOG NewNet::log
#endif // NEWNET_LOG_H
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