134 lines
3.8 KiB
C++
134 lines
3.8 KiB
C++
//
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// Copyright(c) 2017 spdlog authors.
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// Distributed under the MIT License (http://opensource.org/licenses/MIT)
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//
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#pragma once
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#include "spdlog/sinks/base_sink.h"
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#include "spdlog/common.h"
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#include "spdlog/details/os.h"
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#include <string>
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#include <map>
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namespace spdlog
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{
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namespace sinks
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{
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/**
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* This sink prefixes the output with an ANSI escape sequence color code depending on the severity
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* of the message.
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* If no color terminal detected, omit the escape codes.
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*/
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template <class Mutex>
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class ansicolor_sink: public base_sink<Mutex>
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{
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public:
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ansicolor_sink(FILE* file): target_file_(file)
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{
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should_do_colors_ = details::os::in_terminal(file) && details::os::is_color_terminal();
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colors_[level::trace] = cyan;
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colors_[level::debug] = cyan;
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colors_[level::info] = reset;
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colors_[level::warn] = yellow + bold;
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colors_[level::err] = red + bold;
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colors_[level::critical] = bold + on_red;
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colors_[level::off] = reset;
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}
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virtual ~ansicolor_sink()
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{
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_flush();
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}
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void set_color(level::level_enum color_level, const std::string& color)
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{
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std::lock_guard<Mutex> lock(base_sink<Mutex>::_mutex);
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colors_[color_level] = color;
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}
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/// Formatting codes
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const std::string reset = "\033[00m";
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const std::string bold = "\033[1m";
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const std::string dark = "\033[2m";
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const std::string underline = "\033[4m";
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const std::string blink = "\033[5m";
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const std::string reverse = "\033[7m";
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const std::string concealed = "\033[8m";
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// Foreground colors
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const std::string grey = "\033[30m";
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const std::string red = "\033[31m";
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const std::string green = "\033[32m";
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const std::string yellow = "\033[33m";
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const std::string blue = "\033[34m";
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const std::string magenta = "\033[35m";
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const std::string cyan = "\033[36m";
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const std::string white = "\033[37m";
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/// Background colors
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const std::string on_grey = "\033[40m";
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const std::string on_red = "\033[41m";
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const std::string on_green = "\033[42m";
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const std::string on_yellow = "\033[43m";
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const std::string on_blue = "\033[44m";
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const std::string on_magenta = "\033[45m";
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const std::string on_cyan = "\033[46m";
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const std::string on_white = "\033[47m";
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protected:
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virtual void _sink_it(const details::log_msg& msg) override
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{
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// Wrap the originally formatted message in color codes.
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// If color is not supported in the terminal, log as is instead.
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if (should_do_colors_)
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{
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const std::string& prefix = colors_[msg.level];
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fwrite(prefix.data(), sizeof(char), prefix.size(), target_file_);
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fwrite(msg.formatted.data(), sizeof(char), msg.formatted.size(), target_file_);
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fwrite(reset.data(), sizeof(char), reset.size(), target_file_);
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}
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else
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{
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fwrite(msg.formatted.data(), sizeof(char), msg.formatted.size(), target_file_);
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}
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_flush();
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}
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void _flush() override
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{
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fflush(target_file_);
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}
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FILE* target_file_;
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bool should_do_colors_;
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std::map<level::level_enum, std::string> colors_;
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};
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template<class Mutex>
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class ansicolor_stdout_sink: public ansicolor_sink<Mutex>
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{
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public:
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ansicolor_stdout_sink(): ansicolor_sink<Mutex>(stdout)
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{}
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};
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template<class Mutex>
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class ansicolor_stderr_sink: public ansicolor_sink<Mutex>
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{
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public:
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ansicolor_stderr_sink(): ansicolor_sink<Mutex>(stderr)
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{}
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};
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typedef ansicolor_stdout_sink<std::mutex> ansicolor_stdout_sink_mt;
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typedef ansicolor_stdout_sink<details::null_mutex> ansicolor_stdout_sink_st;
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typedef ansicolor_stderr_sink<std::mutex> ansicolor_stderr_sink_mt;
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typedef ansicolor_stderr_sink<details::null_mutex> ansicolor_stderr_sink_st;
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} // namespace sinks
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} // namespace spdlog
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