Boot CLI for converting EDN to JSON. E.g. $ cat ledger.edn | ./edn2json

edn2json

#!/usr/bin/env boot

(set-env! :dependencies '[[org.clojure/data.json "0.2.6"]
                          [org.clojure/clojure "1.8.0"]])

(require '[boot.cli :refer [defclifn]])
(require '[clojure.java.io :as io])
(require '[clojure.data.json :as json])

(defclifn -main
  [t transform VAL str "A literal function to transform each EDN element with before JSON-writing."]
  (let [xf (eval (read-string (get *opts* :transform "identity")))]
    (with-open [r (io/reader *in*)]
      (->> (line-seq r)
           (map (comp println json/write-str xf read-string))
           (dorun)))))

;; To get this running, you need boot:
;;   $ sudo bash -c "cd /usr/local/bin && curl -fsSLo boot https://github.com/boot-clj/boot-bin/releases/download/latest/boot.sh && chmod 755 boot"
;; Then you need this file saved as edn2json
;;   $ chmod +x edn2json
;;   $ echo "{:foo :bar}" | ./edn2json