{

// Based on trick from: Nico Josuttis, C++17 - The Complete Guide

std::chrono::system_clock::duration dt = std::chrono::duration_cast<std::chrono::system_clock::duration>(tp - TP::clock::now());

return std::chrono::system_clock::to_time_t(std::chrono::system_clock::now() + dt);

{

std::string result;

result.reserve(9);

for (int i = 0; i < 9; ++i) {

result = ((static_cast<int>(prms) & (1 << i)) ? "xwrxwrxwr"[i] : '-') + result;

}

return result;

{

#ifdef GHC_FILESYSTEM_VERSION

fs::u8arguments u8guard(argc, argv);

if (!u8guard.valid()) {

std::cerr << "Invalid character encoding, UTF-8 based encoding needed." << std::endl;

std::exit(EXIT_FAILURE);

}

#endif

if (argc > 2) {

std::cerr << "USAGE: dir <path>" << std::endl;

exit(1);

}

fs::path dir{"."};

if (argc == 2) {

dir = fs::u8path(argv[1]);

}

for (auto de : fs::directory_iterator(dir)) {

auto ft = to_time_t(de.last_write_time());

auto ftm = *std::localtime(&ft);

std::cout << (de.is_directory() ? "d" : "-") << perm_to_str(de.symlink_status().permissions()) << " " << std::setw(8) << (de.is_directory() ? "-" : std::to_string(de.file_size())) << " " << std::put_time(&ftm, "%Y-%m-%d %H:%M:%S") << " "

<< de.path().filename().string() << std::endl;

}

return 0;