//********************************************************
// The following code example is taken from the book
//  C++17 - The Complete Guide
//  by Nicolai M. Josuttis (www.josuttis.com)
//  http://www.cppstd17.com
//
// The code is licensed under a
//  Creative Commons Attribution 4.0 International License
//  http://creativecommons.org/licenses/by/4.0/
//********************************************************


#include <string>
#include <chrono>
#include <filesystem>

std::string asString(const std::filesystem::perms& pm)
{
  using perms = std::filesystem::perms;
  std::string s;
  s.resize(9);
  s[0] = (pm & perms::owner_read)   != perms::none ? 'r' : '-';
  s[1] = (pm & perms::owner_write)  != perms::none ? 'w' : '-';
  s[2] = (pm & perms::owner_exec)   != perms::none ? 'x' : '-';
  s[3] = (pm & perms::group_read)   != perms::none ? 'r' : '-';
  s[4] = (pm & perms::group_write)  != perms::none ? 'w' : '-';
  s[5] = (pm & perms::group_exec)   != perms::none ? 'x' : '-';
  s[6] = (pm & perms::others_read)  != perms::none ? 'r' : '-';
  s[7] = (pm & perms::others_write) != perms::none ? 'w' : '-';
  s[8] = (pm & perms::others_exec)  != perms::none ? 'x' : '-';
  return s;
}