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//
// Copyright(c) 2017 spdlog authors.
// Distributed under the MIT License (http://opensource.org/licenses/MIT)
//
#pragma once
#include "../common.h"
#include "../details/os.h"
#include "base_sink.h"
#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<class Mutex>
class ansicolor_sink : public base_sink<Mutex>
{
public:
explicit ansicolor_sink(FILE *file)
: target_file_(file)
{
should_do_colors_ = details::os::in_terminal(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
{
_flush();
}
void set_color(level::level_enum color_level, const std::string &color)
{
std::lock_guard<Mutex> lock(base_sink<Mutex>::_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";
protected:
void _sink_it(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.
if (should_do_colors_ && msg.color_range_end > msg.color_range_start)
{
// before color range
_print_range(msg, 0, msg.color_range_start);
// in color range
_print_ccode(colors_[msg.level]);
_print_range(msg, msg.color_range_start, msg.color_range_end);
_print_ccode(reset);
// after color range
_print_range(msg, msg.color_range_end, msg.formatted.size());
}
else
{
_print_range(msg, 0, msg.formatted.size());
}
_flush();
}
void _flush() override
{
fflush(target_file_);
}
private:
void _print_ccode(const std::string &color_code)
{
fwrite(color_code.data(), sizeof(char), color_code.size(), target_file_);
}
void _print_range(const details::log_msg &msg, size_t start, size_t end)
{
fwrite(msg.formatted.data() + start, sizeof(char), end - start, target_file_);
}
FILE *target_file_;
bool should_do_colors_;
std::unordered_map<level::level_enum, std::string, level::level_hasher> colors_;
};
template<class Mutex>
class ansicolor_stdout_sink : public ansicolor_sink<Mutex>
{
public:
ansicolor_stdout_sink()
: ansicolor_sink<Mutex>(stdout)
{
}
};
using ansicolor_stdout_sink_mt = ansicolor_stdout_sink<std::mutex>;
using ansicolor_stdout_sink_st = ansicolor_stdout_sink<details::null_mutex>;
template<class Mutex>
class ansicolor_stderr_sink : public ansicolor_sink<Mutex>
{
public:
ansicolor_stderr_sink()
: ansicolor_sink<Mutex>(stderr)
{
}
};
using ansicolor_stderr_sink_mt = ansicolor_stderr_sink<std::mutex>;
using ansicolor_stderr_sink_st = ansicolor_stderr_sink<details::null_mutex>;
} // namespace sinks
} // namespace spdlog
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