Question

I have a string like:

str = "/some/path/to/some/file.ext"

The result should be like:

[path, dir, file]
=> ["/some/path/to", "some", "file.ext"]

My current code:

chunks = str.split '/'
=> ["", "some", "path", "to", "some", "file.ext"]

file = chunks.pop
=> "file.ext"

dir = chunks.pop
=> "some"

path = chunks.join '/'
=> "/some/path/to"

But it’s ugly and slow.

I also tried regular expressions and File.split, but I got an even uglier mess.

What is the solution?

Answer 1

Use pathname:

require 'pathname'

str = "/some/path/to/some/file.ext"

p = Pathname.new str

path, dir, file = [p.dirname.parent, p.parent.basename, p.basename].map(&:to_s)

p( [path, dir, file] )

It runs great on all versions.

Here you can see it in action.