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/*
* CLoggerBase.h, part of VCMI engine
*
* Authors: listed in file AUTHORS in main folder
*
* License: GNU General Public License v2.0 or later
* Full text of license available in license.txt file, in main folder
*
*/
#pragma once
namespace ELogLevel
{
enum ELogLevel
{
NOT_SET = 0,
TRACE,
DEBUG,
INFO,
WARN,
ERROR
};
inline std::string to_string(ELogLevel level)
{
switch (level) {
case NOT_SET:
return "not set";
case TRACE:
return "trace";
case DEBUG:
return "debug";
case INFO:
return "info";
case WARN:
return "warn";
case ERROR:
return "error";
default:
return std::string("invalid (") + std::to_string(level) + ")";
}
}
}
namespace vstd
{
class DLL_LINKAGE CLoggerBase
{
public:
virtual ~CLoggerBase(){};
virtual void log(ELogLevel::ELogLevel level, const std::string & message) const = 0;
template<typename T, typename ... Args>
void log(ELogLevel::ELogLevel level, const std::string & format, T t, Args ... args) const
{
boost::format fmt(format);
makeFormat(fmt, t, args...);
log(level, fmt.str());
}
/// Log methods for various log levels
inline void error(const std::string & message) const
{
log(ELogLevel::ERROR, message);
};
template<typename T, typename ... Args>
void error(const std::string & format, T t, Args ... args) const
{
log(ELogLevel::ERROR, format, t, args...);
}
inline void warn(const std::string & message) const
{
log(ELogLevel::WARN, message);
};
template<typename T, typename ... Args>
void warn(const std::string & format, T t, Args ... args) const
{
log(ELogLevel::WARN, format, t, args...);
}
inline void info(const std::string & message) const
{
log(ELogLevel::INFO, message);
};
template<typename T, typename ... Args>
void info(const std::string & format, T t, Args ... args) const
{
log(ELogLevel::INFO, format, t, args...);
}
inline void debug(const std::string & message) const
{
log(ELogLevel::DEBUG, message);
};
template<typename T, typename ... Args>
void debug(const std::string & format, T t, Args ... args) const
{
log(ELogLevel::DEBUG, format, t, args...);
}
inline void trace(const std::string & message) const
{
log(ELogLevel::TRACE, message);
};
template<typename T, typename ... Args>
void trace(const std::string & format, T t, Args ... args) const
{
log(ELogLevel::TRACE, format, t, args...);
}
private:
template <typename T>
void makeFormat(boost::format & fmt, T t) const
{
fmt % t;
}
template <typename T, typename ... Args>
void makeFormat(boost::format & fmt, T t, Args ... args) const
{
fmt % t;
makeFormat(fmt, args...);
}
};
}
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