libcruft-util/log.hpp

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2012-04-24 17:38:35 +10:00
/*
* This file is part of libgim.
*
* libgim 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 3 of the License, or (at your option) any later
* version.
*
* libgim 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 libgim. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright 2012 Danny Robson <danny@nerdcruft.net>
*/
#ifndef __UTIL_LOG_HPP
#define __UTIL_LOG_HPP
#include <iostream>
#include <string>
namespace util {
// rfc5424 log levels. It is assumed they are contiguous to simplify array
// indexing in logging code.
//
enum level_t {
EMERGENCY, /** system is unusable */
ALERT, /** action must be taken immediately */
CRITICAL, /** critical conditions */
ERROR, /** error conditions */
WARNING, /** warning conditions */
NOTICE, /** normal but significant condition */
INFORMATIONAL,
INFO = INFORMATIONAL, /** informational messages */
DEBUG, /** debug-level messages */
NUM_LEVELS
};
std::ostream&
operator<< (std::ostream&, level_t);
void log (level_t, const std::string &format);
template <typename ...tail>
void log (level_t, const std::string &format, tail ..._tail);
#define LOG_EMERGENCY(...) do { log(util::EMERGENCY, ##__VA_ARGS__); } while (0)
#define LOG_ALERT(...) do { log(util::ALERT, ##__VA_ARGS__); } while (0)
#define LOG_CRITICAL(...) do { log(util::CRITICAL, ##__VA_ARGS__); } while (0)
#define LOG_ERROR(...) do { log(util::ERROR, ##__VA_ARGS__); } while (0)
#define LOG_WARNING(...) do { log(util::WARNING, ##__VA_ARGS__); } while (0)
#define LOG_NOTICE(...) do { log(util::NOTICE, ##__VA_ARGS__); } while (0)
#define LOG_INFO(...) do { log(util::INFO, ##__VA_ARGS__); } while (0)
#define LOG_DEBUG(...) do { log(util::DEBUG, ##__VA_ARGS__); } while (0)
}
#include "log.ipp"
#endif