formatter for clojure using cljfmt

build.boot

;; boot fmt -f myfile.clj
;; boot fmt -f src
;; -- it will change files inplace 

(set-env! :dependencies '[[cljfmt "0.3.0"]])

(require '[cljfmt.core :as fmt]
         '[clojure.java.io :as io])

(defn fmt-file [f]
  (println "formatting" (.getName f))
  (spit f (fmt/reformat-string (slurp f))))

(defn clj-file? [f]
  (and (.exists f) (.isFile f) (not (.isHidden f))
       (contains? #{"clj" "cljs" "cljc" "cljx" "boot"} 
                  (last (.split (.toLowerCase (.getName f)) "\\.")))))

(deftask fmt [f files VAL str "file(s) to format"]
  (let [f (io/file files)]
    (when (.exists f)
      (doall (map fmt-file (filter clj-file? (if (.isDirectory f) (file-seq f) [f])))))))