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Add first pass at logging code

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This commit is contained in:
Danny Robson 2012-04-24 17:38:35 +10:00
parent 73f483c06b
commit 99bdd49f2f
4 changed files with 200 additions and 0 deletions
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3
Makefile.am
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@ -46,6 +46,9 @@ UTIL_FILES = \
json.hpp \ json.hpp \
lerp.cpp \ lerp.cpp \
lerp.hpp \ lerp.hpp \
log.cpp \
log.hpp \
log.ipp \
maths.cpp \ maths.cpp \
maths.hpp \ maths.hpp \
maths/matrix.cpp \ maths/matrix.cpp \

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log.cpp Normal file
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/*
* 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>
*/
#include "log.hpp"
#include "debug.hpp"
#include "types.hpp"
#include <ctime>
#include <cstring>
#include <boost/format.hpp>
using namespace util;
using std::string;
void
check_level (level_t l)
{ check (l >= 0 && l < NUM_LEVELS); }
const string&
level_to_string (level_t l) {
check_level (l);
static const std::string level_names[] = {
"EMERGENCY",
"ALERT",
"CRITICAL",
"ERROR",
"WARNING",
"NOTICE",
"INFORMATIONAL",
"DEBUG"
};
return level_names[l];
}
std::ostream&
util::operator<< (std::ostream& os, level_t l) {
os << level_to_string (l);
return os;
}
void
util::log (level_t l, const std::string &format)
{ detail::log (l, boost::format (format)); }
void
util::detail::log (level_t level, boost::format &&format) {
static const boost::format LEVEL_FORMAT ("%s [%s] ");
char time_string[strlen("YYYY-mm-dd HHMMh") + 1];
time_t unix_time = time (nullptr);
if (0 == strftime (time_string,
elems (time_string),
"%Y-%m-%d %H%Mh",
localtime (&unix_time))) {
unusual ();
return;
}
std::cerr << boost::format (LEVEL_FORMAT)
% time_string
% level
<< format
<< "\n";
}

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log.hpp Normal file
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/*
* 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

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log.ipp Normal file
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/*
* 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_IPP
#define __UTIL_LOG_IPP
#include <boost/format.hpp>
namespace util {
namespace detail {
void
log (level_t l, boost::format &&format);
template <typename T, typename ...tail>
void
log (level_t l, boost::format &&format, const T &val, tail ..._tail) {
::util::detail::log (l, std::move (format % val), _tail...);
}
}
template <typename ...tail>
void log (level_t l, const std::string &format, tail ..._tail)
{ detail::log (l, std::move (boost::format (format)), _tail...); }
}
#endif