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Use tree-seq to make iterate-dir lazy #105

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Use tree-seq to make iterate-dir lazy #105

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7 changes: 3 additions & 4 deletions src/me/raynes/fs.clj
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Original file line number Diff line number Diff line change
Expand Up @@ -414,9 +414,8 @@
(.listFiles f))

(defn- iterate-dir* [path]
(let [root (file path)
nodes (butlast (iterzip (zip/zipper f-dir? f-children nil root)))]
(filter f-dir? nodes)))
(let [root (file path)]
(filter f-dir? (tree-seq f-dir? f-children root))))

(defn- walk-map-fn [root]
(let [kids (f-children root)
Expand All @@ -425,7 +424,7 @@
[root dirs files]))

(defn iterate-dir
"Return a sequence `[root dirs files]`, starting from `path` in depth-first order"
"Return a lazy sequence `[root dirs files]`, starting from `path` in depth-first order"
[path]
(map walk-map-fn (iterate-dir* path)))

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