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//
// Copyright(c) 2017 spdlog authors.
// Distributed under the MIT License (http://opensource.org/licenses/MIT)
//
#pragma once
#ifndef SPDLOG_H
#include "spdlog/spdlog.h"
#endif
#include "spdlog/details/console_globals.h"
#include "spdlog/details/null_mutex.h"
#include "spdlog/details/os.h"
#include "spdlog/sinks/sink.h"
#include <memory>
#include <mutex>
#include <string>
#include <unordered_map>
namespace spdlog {
namespace sinks {
/**
* This sink prefixes the output with an ANSI escape sequence color code
* depending on the severity
* of the message.
* If no color terminal detected, omit the escape codes.
*/
template<typename TargetStream, class ConsoleMutex>
class ansicolor_sink final : public sink
{
public:
using mutex_t = typename ConsoleMutex::mutex_t;
ansicolor_sink()
: target_file_(TargetStream::stream())
, mutex_(ConsoleMutex::mutex())
{
should_do_colors_ = details::os::in_terminal(target_file_) && details::os::is_color_terminal();
colors_[level::trace] = white;
colors_[level::debug] = cyan;
colors_[level::info] = green;
colors_[level::warn] = yellow + bold;
colors_[level::err] = red + bold;
colors_[level::critical] = bold + on_red;
colors_[level::off] = reset;
}
~ansicolor_sink() override = default;
ansicolor_sink(const ansicolor_sink &other) = delete;
ansicolor_sink &operator=(const ansicolor_sink &other) = delete;
void set_color(level::level_enum color_level, const std::string &color)
{
std::lock_guard<mutex_t> lock(mutex_);
colors_[color_level] = color;
}
/// Formatting codes
const std::string reset = "\033[m";
const std::string bold = "\033[1m";
const std::string dark = "\033[2m";
const std::string underline = "\033[4m";
const std::string blink = "\033[5m";
const std::string reverse = "\033[7m";
const std::string concealed = "\033[8m";
const std::string clear_line = "\033[K";
// Foreground colors
const std::string black = "\033[30m";
const std::string red = "\033[31m";
const std::string green = "\033[32m";
const std::string yellow = "\033[33m";
const std::string blue = "\033[34m";
const std::string magenta = "\033[35m";
const std::string cyan = "\033[36m";
const std::string white = "\033[37m";
/// Background colors
const std::string on_black = "\033[40m";
const std::string on_red = "\033[41m";
const std::string on_green = "\033[42m";
const std::string on_yellow = "\033[43m";
const std::string on_blue = "\033[44m";
const std::string on_magenta = "\033[45m";
const std::string on_cyan = "\033[46m";
const std::string on_white = "\033[47m";
void log(const details::log_msg &msg) override
{
// Wrap the originally formatted message in color codes.
// If color is not supported in the terminal, log as is instead.
std::lock_guard<mutex_t> lock(mutex_);
fmt::memory_buffer formatted;
formatter_->format(msg, formatted);
if (should_do_colors_ && msg.color_range_end > msg.color_range_start)
{
// before color range
print_range_(formatted, 0, msg.color_range_start);
// in color range
print_ccode_(colors_[msg.level]);
print_range_(formatted, msg.color_range_start, msg.color_range_end);
print_ccode_(reset);
// after color range
print_range_(formatted, msg.color_range_end, formatted.size());
}
else // no color
{
print_range_(formatted, 0, formatted.size());
}
fflush(target_file_);
}
void flush() override
{
std::lock_guard<mutex_t> lock(mutex_);
fflush(target_file_);
}
void set_pattern(const std::string &pattern) final
{
std::lock_guard<mutex_t> lock(mutex_);
formatter_ = std::unique_ptr<spdlog::formatter>(new pattern_formatter(pattern));
}
void set_formatter(std::unique_ptr<spdlog::formatter> sink_formatter) override
{
std::lock_guard<mutex_t> lock(mutex_);
formatter_ = std::move(sink_formatter);
}
private:
void print_ccode_(const std::string &color_code)
{
fwrite(color_code.data(), sizeof(char), color_code.size(), target_file_);
}
void print_range_(const fmt::memory_buffer &formatted, size_t start, size_t end)
{
fwrite(formatted.data() + start, sizeof(char), end - start, target_file_);
}
FILE *target_file_;
mutex_t &mutex_;
bool should_do_colors_;
std::unordered_map<level::level_enum, std::string, level::level_hasher> colors_;
};
using ansicolor_stdout_sink_mt = ansicolor_sink<details::console_stdout, details::console_mutex>;
using ansicolor_stdout_sink_st = ansicolor_sink<details::console_stdout, details::console_nullmutex>;
using ansicolor_stderr_sink_mt = ansicolor_sink<details::console_stderr, details::console_mutex>;
using ansicolor_stderr_sink_st = ansicolor_sink<details::console_stderr, details::console_nullmutex>;
} // namespace sinks
} // namespace spdlog
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