clj.native-image CLI JSON-to-EDN example

README.md

GraalVM native image + deps.edn example

A CLI tool that reads JSON from stdin then writes it to stdout in EDN format.

Build

➜ clojure -A:native-image

Run

➜ echo "{\"foo\": [{\"bar\": 1.33}]}" | ./core
{:foo [{:bar 1.33}]}

core.clj

;; IMPORTANT! place this file under src directory
(ns core
  (:require
    [clojure.data.json :as json]
    [clojure.edn :as edn])
  (:gen-class))

(defn -main [& args]
  (if (string? (first args))
    (prn (json/read-str (slurp (first args)) :key-fn keyword))
    (prn (json/read *in* :key-fn keyword))))

deps.edn

{:deps {org.clojure/data.json {:mvn/version "0.2.6"}}
 :aliases {:native-image
           {:extra-deps
            :main-opts ["-m clj.native-image core"
                        "-H:Name=json2edn"]
            {clj.native-image
             #_{:local/root "/path/to/clj.native-image"}
             {:git/url "https://github.com/taylorwood/clj.native-image.git"
              :sha "0f113d46f9f0d07e8a29545c636431ddf5360a7d"
              :tag "v0.0.3"}}}}
 :jvm-opts ["-Dclojure.compiler.direct-linking=true"]}