basic_file_sink.h

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//
// Copyright(c) 2015-2018 Gabi Melman.
// Distributed under the MIT License (http://opensource.org/licenses/MIT)
//
 
#pragma once
 
#ifndef SPDLOG_H
#include "spdlog/spdlog.h"
#endif
 
#include "spdlog/details/file_helper.h"
#include "spdlog/details/null_mutex.h"
#include "spdlog/sinks/base_sink.h"
 
#include <mutex>
#include <string>
 
namespace spdlog {
namespace sinks {
/*
 * Trivial file sink with single file as target
 */
template<typename Mutex>
class basic_file_sink final : public base_sink<Mutex>
{
public:
    explicit basic_file_sink(const filename_t &filename, bool truncate = false)
    {
        file_helper_.open(filename, truncate);
    }
 
    const filename_t &filename() const
    {
        return file_helper_.filename();
    }
 
protected:
    void sink_it_(const details::log_msg &msg) override
    {
        fmt::memory_buffer formatted;
        sink::formatter_->format(msg, formatted);
        file_helper_.write(formatted);
    }
 
    void flush_() override
    {
        file_helper_.flush();
    }
 
private:
    details::file_helper file_helper_;
};
 
using basic_file_sink_mt = basic_file_sink<std::mutex>;
using basic_file_sink_st = basic_file_sink<details::null_mutex>;
 
} // namespace sinks
 
//
// factory functions
//
template<typename Factory = default_factory>
inline std::shared_ptr<logger> basic_logger_mt(const std::string &logger_name, const filename_t &filename, bool truncate = false)
{
    return Factory::template create<sinks::basic_file_sink_mt>(logger_name, filename, truncate);
}
 
template<typename Factory = default_factory>
inline std::shared_ptr<logger> basic_logger_st(const std::string &logger_name, const filename_t &filename, bool truncate = false)
{
    return Factory::template create<sinks::basic_file_sink_st>(logger_name, filename, truncate);
}
 
} // namespace spdlog