.. _program_listing_file_src_sparsebase_utils_logger.cc:

Program Listing for File logger.cc
==================================

|exhale_lsh| :ref:`Return to documentation for file <file_src_sparsebase_utils_logger.cc>` (``src/sparsebase/utils/logger.cc``)

.. |exhale_lsh| unicode:: U+021B0 .. UPWARDS ARROW WITH TIP LEFTWARDS

.. code-block:: cpp

   #include "logger.h"
   
   #include <algorithm>
   #include <ctime>
   #include <iostream>
   #include <sstream>
   #include <string>
   #include <typeindex>
   
   #include "utils.h"
   namespace sparsebase::utils {
   
   Logger::Logger(std::type_index root_type) {
     root_ = utils::demangle(root_type);
     root_.erase(std::remove(root_.begin(), root_.end(), '*'), root_.end());
     if (!Logger::filename_.empty()) file_.open(filename_);
   }
   
   Logger::Logger() {
     if (!Logger::filename_.empty()) file_.open(filename_);
   }
   
   Logger::~Logger() {
     if (file_.is_open()) file_.close();
   }
   
   void Logger::Log(const std::string& message, LogLevel msg_level) {
     if (msg_level < Logger::level_) {
       return;
     }
   
     std::time_t current = std::time(0);
     auto now_tm = std::localtime(&current);
     char buffer[30];
     size_t size = strftime(buffer, 30, "%x %X", now_tm);
     std::string now_str(buffer, buffer + size);
   
     std::stringstream ss;
     ss << "[" << now_str << "]"
        << " ";
   
     std::string level_str = "INFO";
     if (msg_level == LOG_LVL_WARNING) {
       level_str = "WARNING";
     }
     ss << "[" << level_str << "]"
        << " ";
   
     ss << "[" << root_ << "]"
        << " ";
   
     ss << message;
   
     std::string log = ss.str();
   
     if (file_.is_open()) file_ << log << std::endl;
     if (Logger::use_stdout_) std::cout << log << std::endl;
     if (Logger::use_stderr_) std::cerr << log << std::endl;
   }
   
   LogLevel Logger::level_ = LOG_LVL_WARNING;
   std::string Logger::filename_;
   bool Logger::use_stdout_ = true;
   bool Logger::use_stderr_ = false;
   }  // namespace sparsebase::utils