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#pragma once
#include <cstdio>
#include <map>
#include <string>
#include <thread>
#include <utility>
#include "common.hpp"
#include "settings.hpp"
#ifndef STDOUT_FILENO
#define STDOUT_FILENO 1
#endif
#ifndef STDERR_FILENO
#define STDERR_FILENO 2
#endif
POLYBAR_NS
enum class loglevel {
NONE = 0,
ERROR,
WARNING,
NOTICE,
INFO,
TRACE,
};
class logger {
public:
using make_type = const logger&;
static make_type make(loglevel level = loglevel::NONE);
explicit logger(loglevel level);
const logger& operator=(const logger&) const {
return *this;
}
static loglevel parse_verbosity(const string& name, loglevel fallback = loglevel::NONE);
void verbosity(loglevel level);
#ifdef DEBUG_LOGGER // {{{
template <typename... Args>
void trace(const string& message, Args&&... args) const {
output(loglevel::TRACE, message, std::forward<Args>(args)...);
}
#ifdef DEBUG_LOGGER_VERBOSE
template <typename... Args>
void trace_x(const string& message, Args&&... args) const {
output(loglevel::TRACE, message, std::forward<Args>(args)...);
}
#else
template <typename... Args>
void trace_x(Args&&...) const {}
#endif
#else
template <typename... Args>
void trace(Args&&...) const {}
template <typename... Args>
void trace_x(Args&&...) const {}
#endif // }}}
/**
* Output an info message
*/
template <typename... Args>
void info(const string& message, Args&&... args) const {
output(loglevel::INFO, message, std::forward<Args>(args)...);
}
/**
* Output a notice
*/
template <typename... Args>
void notice(const string& message, Args&&... args) const {
output(loglevel::NOTICE, message, std::forward<Args>(args)...);
}
/**
* Output a warning message
*/
template <typename... Args>
void warn(const string& message, Args&&... args) const {
output(loglevel::WARNING, message, std::forward<Args>(args)...);
}
/**
* Output an error message
*/
template <typename... Args>
void err(const string& message, Args&&... args) const {
output(loglevel::ERROR, message, std::forward<Args>(args)...);
}
protected:
template <typename T>
decltype(auto) convert(T&& arg) const {
return forward<T>(arg);
}
/**
* Convert string
*/
const char* convert(string& arg) const;
const char* convert(const string& arg) const;
/**
* Convert thread id
*/
size_t convert(std::thread::id arg) const;
/**
* Write the log message to the output channel
* if the defined verbosity level allows it
*/
template <typename... Args>
void output(loglevel level, const string& format, Args&&... values) const {
if (level > m_level) {
return;
}
#if defined(__clang__) // {{{
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wformat-security"
#elif defined(__GNUC__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wformat-security"
#endif // }}}
dprintf(m_fd, (m_prefixes.at(level) + format + m_suffixes.at(level) + "\n").c_str(), convert(values)...);
#if defined(__clang__) // {{{
#pragma clang diagnostic pop
#elif defined(__GNUC__)
#pragma GCC diagnostic pop
#endif // }}}
}
private:
/**
* Logger verbosity level
*/
loglevel m_level{loglevel::TRACE};
/**
* File descriptor used when writing the log messages
*/
int m_fd{STDERR_FILENO};
/**
* Loglevel specific prefixes
*/
std::map<loglevel, string> m_prefixes;
/**
* Loglevel specific suffixes
*/
std::map<loglevel, string> m_suffixes;
};
POLYBAR_NS_END
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