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Re: [SG16-Unicode] filesystem::path_view::compare()

From: Niall Douglas <s_sourceforge_at_[hidden]>
Date: Fri, 23 Aug 2019 13:27:14 +0100
> Since different components of a path can be on different filesystems and
> different filesystems have different rules for storing path, can we
> innovate a bit here?

Sure. Using LLFIO:

bool path_equality(path_view a, path_view b)
  expected<file_handle, file_io_error> a = catch(file({}, a, :mode::none));
  expected<file_handle, file_io_error> b = catch(file({}, b, :mode::none));
  return a.has_value() && b.has_value() && a->unique_id() == b->unique_id();

This is the only feasible, and correct, way of performing filesystem
path equality comparison. This is what we ought to do.


Received on 2019-08-23 14:27:19