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core.clj
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core.clj
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(ns file-traverse.core)
(declare traverse ltraverse execute)
(defn traverse
"execute func for all files in pathname, including files in sub directories"
([pathname func]
(traverse pathname func (fn [x] true)))
([pathname func filter_file]
(traverse pathname func filter_file (fn [x] true)))
([pathname func filter_file filter_dir]
(let [path (java.io.File. pathname)]
(execute path func filter_file filter_dir))))
(defmulti execute
"if path is a file, exec (func path), if path is a directory recursive call for path"
(fn [path func filter_file filter_dir]
(if (.isFile path) :file :directory)))
(defmethod execute
:file
;;; exec (func path)
[path func filter_file filter_dir]
(when (filter_file path)
(func path)))
(defmethod execute
:directory
;;; recursive call for path
[path func filter_file filter_dir]
(when (filter_dir path)
(doseq [p (.listFiles path)]
(execute p func filter_file filter_dir))))
(defn ltraverse
"execute func for all files in pathname, not including files in sub directories"
([pathname func]
(ltraverse pathname func (fn [x] true)))
([pathname func filter_file]
(let [path (java.io.File. pathname)]
(if (.isFile path)
(when (filter_file path)
(func path))
(doseq [path1 (.listFiles path)]
(if (.isFile path1)
(when (filter_file path1)
(func path1))))))))