.. _program_listing_file_include_dx2_logging.hpp:

Program Listing for File logging.hpp
====================================

|exhale_lsh| :ref:`Return to documentation for file <file_include_dx2_logging.hpp>` (``include/dx2/logging.hpp``)

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

.. code-block:: cpp

   #pragma once
   
   #include <cstdlib>
   #include <fmt/color.h>
   #include <fmt/core.h>
   #include <string_view>
   
   namespace dx2_log {
   
   // Returns true if DX2_DEBUG is set
   inline bool is_debug_enabled() { return std::getenv("DX2_DEBUG") != nullptr; }
   
   inline void info(std::string_view msg) {
     fmt::print(fg(fmt::color::green) | fmt::emphasis::bold, "[INFO] ");
     fmt::print("{}\n", msg);
   }
   
   inline void warning(std::string_view msg) {
     fmt::print(stderr, fg(fmt::color::yellow) | fmt::emphasis::bold,
                "[WARNING] ");
     fmt::print(stderr, "{}\n", msg);
   }
   
   inline void error(std::string_view msg) {
     fmt::print(stderr, fg(fmt::color::red) | fmt::emphasis::bold, "[ERROR] ");
     fmt::print(stderr, "{}\n", msg);
   }
   
   inline void debug(std::string_view msg) {
     if (is_debug_enabled()) {
       fmt::print(fg(fmt::color::blue) | fmt::emphasis::bold, "[DEBUG] ");
       fmt::print("{}\n", msg);
     }
   }
   
   // Optionally, overloads that support format-style args:
   template <typename... Args>
   inline void debug(fmt::format_string<Args...> fmt_str, Args &&...args) {
     if (is_debug_enabled()) {
       fmt::print(fg(fmt::color::blue) | fmt::emphasis::bold, "[DEBUG] ");
       fmt::print(fmt_str, std::forward<Args>(args)...);
       fmt::print("\n");
     }
   }
   
   } // namespace dx2_log