(defmodule Filepath

  (use Array)

  (doc dir-from-path "removes the file name part of a path to a file, similar to the `basename` utility in Shell scripting.")
  (defn dir-from-path [path]
    (let [segments (split-by path &[\/])
          n (dec (length &segments))
          without-last (prefix &segments n)]
      (concat &(copy-map &(fn [s] (str* s "/")) &without-last))))

  (doc file-from-path "removes the base name part of a path to a file, similar to the `filename` utility in Shell scripting.")
  (defn file-from-path [path]
    (let [segments (split-by path &[\/])]
      ; this is actually safe here, because split by will return an array of
      ; length > 0
      @(unsafe-last &segments)))
  )