logger.hpp

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/*
  CLAW - a C++ Library Absolutely Wonderful
 
  CLAW is a free library without any particular aim but being useful to
  anyone.
 
  Copyright (C) 2005-2011 Julien Jorge
 
  This library 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 library 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 library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 
  contact: julien.jorge@stuff-o-matic.com
*/
#ifndef __CLAW_LOGGER_HPP__
#define __CLAW_LOGGER_HPP__
 
#include <claw/logger/log_level.hpp>
#include <claw/logger/log_stream.hpp>
 
#include <list>
#include <mutex>
#include <ostream>
#include <string>
 
#ifndef CLAW_LOGGER_EXPORT
#ifdef CLAW_LOGGER_NO_EXPORT
#define CLAW_LOGGER_EXPORT
#else
#ifdef _WIN32
#ifdef claw_logger_EXPORTS
#define CLAW_LOGGER_EXPORT __declspec(dllexport)
#else
#define CLAW_LOGGER_EXPORT __declspec(dllimport)
#endif // def claw_logger_EXPORTS
#else  // def _WIN32
#define CLAW_LOGGER_EXPORT
#endif // def _WIN32
#endif // def CLAW_LOGGER_NO_EXPORT
#endif // ndef CLAW_LOGGER_EXPORT
 
namespace claw
{
  class log_system
  {
  public:
    typedef log_stream stream_type;
    typedef std::list<stream_type*> stream_list_type;
 
  public:
    CLAW_LOGGER_EXPORT log_system();
    CLAW_LOGGER_EXPORT ~log_system();
    CLAW_LOGGER_EXPORT void clear();
 
    CLAW_LOGGER_EXPORT void merge(stream_type* s);
    CLAW_LOGGER_EXPORT void remove(const stream_type* s);
    CLAW_LOGGER_EXPORT void set(stream_type* s);
    CLAW_LOGGER_EXPORT void set_level(int lvl);
    CLAW_LOGGER_EXPORT void set_level(const log_level& lvl);
 
    CLAW_LOGGER_EXPORT void flush();
 
    template <typename T>
    log_system& operator<<(const T& that);
 
    CLAW_LOGGER_EXPORT log_system& operator<<(const log_level& that);
    CLAW_LOGGER_EXPORT log_system& operator<<(log_system& (*pf)(log_system&));
 
  private:
    void print(const std::string& s);
 
  private:
    std::mutex m_mutex;

    int m_log_level;

    int m_message_level;

    stream_list_type m_stream;
 
  }; // class log_system
 
  CLAW_LOGGER_EXPORT extern log_system logger;
 
  CLAW_LOGGER_EXPORT log_system& lendl(log_system& log);
 
}
 
namespace std
{
  CLAW_LOGGER_EXPORT claw::log_system& endl(claw::log_system& log);
}
 
// template methods
#include <claw/logger/logger.tpp>
 
#endif // __CLAW_LOGGER_HPP__