fs.hpp

   1 #ifndef FS_DOT_HPP
   2 #define FS_DOT_HPP
   3
   4 // Normally I would consider it rude to have a "using …" in a header
   5 // file, but in this case the whole point is to conditionally define a
   6 // short namespace that gives us a filesystem library.
   7
   8 #if __has_include(<filesystem>)
   9
  10 #include <filesystem>
  11 namespace fs = std::filesystem;
  12 using std::error_code;
  13
  14 // clang-format off
  15 #elif __has_include(<experimental/filesystem>)
  16 // clang-format on
  17
  18 #include <experimental/filesystem>
  19 namespace fs = std::experimental::filesystem;
  20 using std::error_code;
  21
  22 #else
  23
  24 #define BOOST_FILESYSTEM_NO_DEPRECATED
  25 #include <boost/filesystem.hpp>
  26 namespace fs = boost::filesystem;
  27 using boost::system::error_code;
  28
  29 #endif
  30
  31 #endif // FS_DOT_HPP