(import 'java.io.File)
(require '[clojure.zip :as zip])

(defn branch? [f]
  (.isDirectory f))

(defn children [f]
  (.listFiles f))

(defn iterzip [z]
  "Iterate over a zip, returns a sequence of the nodes"
  (when (not (zip/end? z))
    (cons (zip/node z) (lazy-seq (iterzip (zip/next z))))))

(defn iterdir [path]
  (iterzip (zip/zipper branch? children nil (File. path))))