engine_logger.hpp

/*
 * MIT License
 *
 * Copyright (c) 2024 Giovanni Santini
 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */
 
#pragma once
 
#include "utils_types.hpp"
 
#include <fstream>
#include <iostream>
#include <string>
 
#define DEBUG(...)                                                             \
    Brenta::Utils::Logger::Log(Brenta::Types::LogLevel::DEBUG, __VA_ARGS__)
#define INFO(...)                                                              \
    Brenta::Utils::Logger::Log(Brenta::Types::LogLevel::INFO, __VA_ARGS__)
#define WARNING(...)                                                           \
    Brenta::Utils::Logger::Log(Brenta::Types::LogLevel::WARNING, __VA_ARGS__)
#define ERROR(...)                                                             \
    Brenta::Utils::Logger::Log(Brenta::Types::LogLevel::ERROR, __VA_ARGS__)
 
namespace Brenta
{
 
namespace Utils
{
 
class Logger
{
  public:
    static Brenta::Types::LogLevel level;
    static std::ofstream log_file;
 
    static void Init();
    static void SetLogLevel(Brenta::Types::LogLevel level);
    static void SetLogFile(const std::string &file);
    static void Close();
 
    template <typename T, typename... Args>
    static void LogToStdout(T message, Args... args)
    {
        std::cout << message;
        LogToStdout(args...);
    }
 
    template <typename T, typename... Args>
    static void LogToFile(T message, Args... args)
    {
        log_file << message;
        LogToFile(args...);
    }
    template <typename... Args>
    static void Log(Brenta::Types::LogLevel level, Args... args)
    {
        if (Logger::level > level)
            return;
        LogToStdout(level, ": ", args...);
        if (Logger::log_file.is_open())
            LogToFile(level, ": ", args...);
    }
 
  private:
    /* Base cases */
    template <typename T> static void LogToStdout(T message)
    {
        std::cout << message << std::endl;
    }
    template <typename T> static void LogToFile(T message)
    {
        log_file << message << std::endl;
    }
};
 
} // namespace Utils
 
} // namespace Brenta