//
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// Copyright(c) 2016 spdlog
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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 "../common.h"
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#include "../details/null_mutex.h"
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#include "base_sink.h"
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#include <mutex>
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#include <string>
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#include <unordered_map>
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#include <wincon.h>
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namespace spdlog {
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namespace sinks {
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/*
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* Windows color console sink. Uses WriteConsoleA to write to the console with colors
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*/
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template<class Mutex>
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class wincolor_sink : public base_sink<Mutex>
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{
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public:
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const WORD BOLD = FOREGROUND_INTENSITY;
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const WORD RED = FOREGROUND_RED;
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const WORD CYAN = FOREGROUND_GREEN | FOREGROUND_BLUE;
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const WORD WHITE = FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE;
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const WORD YELLOW = FOREGROUND_RED | FOREGROUND_GREEN;
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wincolor_sink(HANDLE std_handle)
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: out_handle_(std_handle)
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{
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colors_[level::trace] = CYAN;
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colors_[level::debug] = CYAN;
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colors_[level::info] = WHITE | BOLD;
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colors_[level::warn] = YELLOW | BOLD;
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colors_[level::err] = RED | BOLD; // red bold
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colors_[level::critical] = BACKGROUND_RED | WHITE | BOLD; // white bold on red background
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colors_[level::off] = 0;
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}
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~wincolor_sink() override
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{
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this->flush();
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}
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wincolor_sink(const wincolor_sink &other) = delete;
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wincolor_sink &operator=(const wincolor_sink &other) = delete;
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// change the color for the given level
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void set_color(level::level_enum level, WORD color)
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{
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std::lock_guard<Mutex> lock(base_sink<Mutex>::_mutex);
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colors_[level] = color;
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}
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protected:
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void _sink_it(const details::log_msg &msg) override
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{
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auto color = colors_[msg.level];
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auto orig_attribs = set_console_attribs(color);
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WriteConsoleA(out_handle_, msg.formatted.data(), static_cast<DWORD>(msg.formatted.size()), nullptr, nullptr);
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SetConsoleTextAttribute(out_handle_, orig_attribs); // reset to orig colors
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}
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void _flush() override
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{
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// windows console always flushed?
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}
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private:
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HANDLE out_handle_;
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std::unordered_map<level::level_enum, WORD, level::level_hasher> colors_;
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// set color and return the orig console attributes (for resetting later)
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WORD set_console_attribs(WORD attribs)
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{
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CONSOLE_SCREEN_BUFFER_INFO orig_buffer_info;
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GetConsoleScreenBufferInfo(out_handle_, &orig_buffer_info);
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WORD back_color = orig_buffer_info.wAttributes;
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// retrieve the current background color
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back_color &= static_cast<WORD>(~(FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE | FOREGROUND_INTENSITY));
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// keep the background color unchanged
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SetConsoleTextAttribute(out_handle_, attribs | back_color);
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return orig_buffer_info.wAttributes; // return orig attribs
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}
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};
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//
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// windows color console to stdout
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//
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template<class Mutex>
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class wincolor_stdout_sink : public wincolor_sink<Mutex>
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{
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public:
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wincolor_stdout_sink()
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: wincolor_sink<Mutex>(GetStdHandle(STD_OUTPUT_HANDLE))
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{
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}
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};
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using wincolor_stdout_sink_mt = wincolor_stdout_sink<std::mutex>;
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using wincolor_stdout_sink_st = wincolor_stdout_sink<details::null_mutex>;
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//
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// windows color console to stderr
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//
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template<class Mutex>
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class wincolor_stderr_sink : public wincolor_sink<Mutex>
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{
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public:
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wincolor_stderr_sink()
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: wincolor_sink<Mutex>(GetStdHandle(STD_ERROR_HANDLE))
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{
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}
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};
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using wincolor_stderr_sink_mt = wincolor_stderr_sink<std::mutex>;
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using wincolor_stderr_sink_st = wincolor_stderr_sink<details::null_mutex>;
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} // namespace sinks
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} // namespace spdlog
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