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// log.cc
// robert - programme du robot 2005. {{{
//
// Copyright (C) 2004 Nicolas Schodet
//
// Robot APB Team/Efrei 2005.
//        Web: http://assos.efrei.fr/robot/
//      Email: robot AT efrei DOT fr
//
// 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.
//
// }}}
#include "log.hh"

#include "config/config.hh"
#include "logger.hh"

#include <string>

/// Constructeur.
Log::Log (const char *module, const char *instance)
    : module_ (module), instance_ (instance)
{
    // Get Config
    Config &config = Config::getInstance ();
    // Get default level log
    std::string defaultLvl = config.get<std::string>("log.level.default",
						     "info");
    level_ = toLevel (defaultLvl);
    // Get private level if exist
    level_ = toLevel (config.get<std::string>
		      (std::string ("log.level.") + module_, defaultLvl));

    // Create the null logger
    loggerNull_ = Logger::create ("null");
    // Create the real logger
    logger_ = Logger::create (config.get<std::string>
			      (std::string ("log.logger.") + module_,
			       config.get<std::string>
			       (std::string ("log.logger.default"), "stdout")));
}

/// Cr�e un nouveau LogMessage.
LogMessage
Log::operator() (const char *msg, Level level/*info*/) const
{
    // Check level
    if (level <= getLevel())
	// Use real logger
	return LogMessage (*this, *logger_, msg, level);
    else
	// Use null logger
	return LogMessage (*this, *loggerNull_, msg, level);
}

/// Traduit le niveau de log.
std::string
Log::toString (Level level)
{
    switch (level)
      {
      case none:
	return "none";
      case fatal:
	return "fatal";
      case error:
	return "error";
      case warning:
	return "warning";
      case info:
	return "info";
      case debug:
	return "debug";
      case verydebug:
	return "verydebug";
      default:
	return "logunknown";
      }
}

/// Traduit le niveau de log.
Log::Level
Log::toLevel (const std::string &level)
{
    switch (level[0])
      {
      case 'n':
	return none;
      case 'f':
	return fatal;
      case 'e':
	return error;
      case 'w':
	return warning;
      case 'i':
	return info;
      case 'd':
	return debug;
      case 'v':
	return verydebug;
      default:
	return levelReserved;
      }
}

/// Change un niveau de log en masque.
Log::Level
Log::toLevelMask (Log::Level level)
{
    return static_cast <Level> ((level - 1) | level);
}