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