DateTimeUtils.hpp

Go to the documentation of this file.

#pragma once
#include <ctime>
#include <iomanip>
#include <sstream>
#include <string>
 
namespace tgbotxx {
  namespace DateTimeUtils {
    [[nodiscard]] static std::string toString(const std::time_t& time, const std::string_view& format = "%Y-%m-%d %H:%M:%S") {
      char buffer[128]{};
      tm tm_{};
#ifdef _WIN32
      localtime_s(&tm_, &time);
#else
      tm_ = *std::localtime(&time);
#endif
      std::strftime(buffer, sizeof(buffer), format.data(), &tm_);
      return std::string{buffer};
    }
 
    [[nodiscard]] static std::time_t fromString(const std::string& dateTimeStr, const std::string_view& format = "%Y-%m-%d %H:%M:%S") {
      std::tm tm{};
      std::istringstream iss{dateTimeStr};
      iss >> std::get_time(&tm, format.data());
      tm.tm_isdst = -1; // let mktime() determine DST correctly
      return std::mktime(&tm);
    }
 
    [[nodiscard]] static std::string now(const std::string_view& format = "%Y-%m-%d %H:%M:%S") {
      const std::time_t tm = std::time(nullptr);
      return toString(tm, format);
    }
 
    [[deprecated("Use DateTimeUtils::now() instead")]]
    [[nodiscard]] static std::string currentDateTime(const std::string_view& format = "%Y-%m-%d %H:%M:%S") {
      return now(format);
    }
 
  }
}