//********************************************************
// The following code example is taken from the book
//  C++20 - The Complete Guide
//  by Nicolai M. Josuttis (www.josuttis.com)
//  http://www.cppstd20.com
//
// The code is licensed under a
//  Creative Commons Attribution 4.0 International License
//  http://creativecommons.org/licenses/by/4.0/
//********************************************************


#include <iostream>
#include <sstream>
#include <chrono>

int main()
{
  namespace chr = std::chrono;

  // initialize a utc_time<> with a leap second:
  chr::utc_time<chr::utc_clock::duration> tp;
  std::istringstream{"2015-6-30 23:59:60"}
    >> chr::parse(std::string{"%F %T"}, tp);

  // convert it to other clocks and print that out:
  auto tpUtc = chr::clock_cast<chr::utc_clock>(tp);
  std::cout << "utc_time:  " << std::format("{:%F %T %Z}", tpUtc) << '\n';
  auto tpSys = chr::clock_cast<chr::system_clock>(tp);
  std::cout << "sys_time:  " << std::format("{:%F %T %Z}", tpSys) << '\n';
  auto tpGps = chr::clock_cast<chr::gps_clock>(tp);
  std::cout << "gps_time:  " << std::format("{:%F %T %Z}", tpGps) << '\n';
  auto tpTai = chr::clock_cast<chr::tai_clock>(tp);
  std::cout << "tai_time:  " << std::format("{:%F %T %Z}", tpTai) << '\n';
  auto tpFile = chr::clock_cast<chr::file_clock>(tp);
  std::cout << "file_time: " << std::format("{:%F %T %Z}", tpFile) << '\n';
}