cached_logger.hpp

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// -*- mode: c++; indent-tabs-mode: nil; -*-
//
//The Biomolecule Toolkit (BTK) is a C++ library for use in the
//modeling, analysis, and design of biological macromolecules.
//Copyright (C) 2006, Tim Robertson <kid50@users.sourceforge.net>
//
//This program is free software; you can redistribute it and/or modify
//it under the terms of the GNU Lesser General Public License as published
//by the Free Software Foundation; either version 2.1 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
//Lesser General Public License for more details.
//
//You should have received a copy of the GNU Lesser 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 BTK_IO_CACHED_LOGGER_HPP
#define BTK_IO_CACHED_LOGGER_HPP

#include <map>
#include <string>

#include <btk/core/io/logger.hpp>

namespace BTK {
namespace IO {
namespace LOGGING {

class CachedLogger : public LoggerInterface
{
 public:
  CachedLogger(LoggerInterface const & previous_logger) :
  _previous_logger(previous_logger) {}
  
  virtual ~CachedLogger() { flush(); }
  
  virtual void log(std::string const & msg,
                   LoggerLevel level) const;

  virtual void error(std::string const & msg) const
  {
    _previous_logger.error(msg);
  }

  void flush() const;

 private:
  LoggerInterface const & _previous_logger;
  mutable std::map<std::string,LoggerLevel> _messages;
};

} // namespace LOGGING
} // namespace IO
} // namespace BTK

#endif 

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