Function LOG

utils/logging.hpp:51–84

#ifndef NO_LOG
  template <typename... Args>
  inline void LOG(Logger &logger, int level, const char *message, ...)
  {
    static const char *orange = "\033[0;33m";
    static const char *red = "\033[0;31m";
    static const char *white = "\033[0;37m";
    static const char *gray = "\033[0;90m";
    static const char *reset = "\033[0m";
    static const char *logColors[] = {red, red, orange, gray};
    if (level <= logger.level)
    {
      va_list args;
      va_list args2;
      va_start(args, message);
      va_copy(args2, args);

      int size = vsnprintf(nullptr, 0, message, args) + 1;
      std::unique_ptr<char[]> buffer(new char[size]);

#ifdef _WIN32
      _vsnprintf_s(buffer.get(), size, _TRUNCATE, message, args2);
#else
      vsnprintf(buffer.get(), size, message, args2);
#endif

      // Brackets and messages are white.
      // Log levels are red for error and warning, orange for info, and grey for trace.
      // Then the color is reset.
      logger.stream << white << "[" << logColors[level] << kLevelStr[level] << white << "] ";
      logger.stream << buffer.get();
      logger.stream << reset << std::endl;
      va_end(args);
      va_end(args2);
    }
  }
#else
  template <typename... Args>
  inline void LOG(Logger &logger, int level, const char *message, Args... args)