Updates

README.md

@@ -2,13 +2,15 @@
 
 `ymlgen` lets you generate yaml files in a declarative way. You can for example use it to manage your Kubernetes manifests.
 
-It leverages the [EDN](https://github.com/edn-format/edn) format and the [Aero](https://github.com/juxt/aero) to do so.
+It supports including parts of definitions into other ones, variables, generating files with a different shape based on a `profile`, reading values from environment variables... All of this allows you to manage your YAML files in an effective way.
 
-Why `ymlgen` ? It's simple (< 170 lines of code including namespaces declarations, line breaks...), powerful and extensible.
+The tool leverages the [EDN](https://github.com/edn-format/edn) format and the [Aero](https://github.com/juxt/aero) library.
+
+Why `ymlgen` ? It's simple, powerful and extensible.
 
 ## Install
 
-For Linux (amd64), download the `ymlgen` binary and put it in your PATH. This binary is built using [GraalVM](https://www.graalvm.org/) so more targets may be added soon.
+For Linux (x86-64), download the `ymlgen` binary and put it in your PATH. This binary is built using [GraalVM](https://www.graalvm.org/) so more targets may be added soon (help welcome).
 
 You can alternatively download the `jar` file and then run it with `java -jar ymlgen.jar` (Java 17 needed).
 
@@ -187,3 +189,39 @@ As you can see, ref allows you to reference another part of your edn file.
 
 Don't hesitate to check the Aero [documentation](https://github.com/juxt/aero#tag-literals) for more examples !
 
+## Generate EDN from YAML
+
+You can use `ymlgen` to convert an existing YAML file to EDN. This can help you to get started with the tool by using existing YAML files. An example with this file named `pod.yml`:
+
+```yaml
+---
+apiVersion: v1
+kind: Pod
+metadata:
+  name: dnsutils
+  namespace: default
+spec:
+  containers:
+  - name: dnsutils
+    image: k8s.gcr.io/e2e-test-images/jessie-dnsutils:1.3
+    command:
+    - sleep
+    - '3600'
+    imagePullPolicy: ifNotPresent
+  restartPolicy: Always
+```
+
+`ymlgen edn --template pod.yaml` will produce:
+
+```clojure
+[{:apiVersion "v1",
+  :kind "Pod",
+  :metadata {:name "dnsutils", :namespace "default"},
+  :spec
+  {:containers
+   [{:name "dnsutils",
+     :image "k8s.gcr.io/e2e-test-images/jessie-dnsutils:1.3",
+     :command ["sleep" "3600"],
+     :imagePullPolicy "ifNotPresent"}],
+   :restartPolicy "Always"}}]
+```

release.sh

@@ -15,4 +15,4 @@ native-image --report-unsupported-elements-at-runtime \
              --initialize-at-build-time \
              --no-server \
              -jar ./target/uberjar/ymlgen-*-standalone.jar \
-             -H:Name=./target/ymlgen
+             -H:Name=./target/ymlgen-${tag}

src/ymlgen/commands/edn.clj

@@ -3,6 +3,12 @@
             [clojure.java.io :as io]
             [clojure.pprint :as pprint]))
 
+(extend-protocol yaml/YAMLCodec
+  java.util.ArrayList
+  (decode [data keywords]
+    (mapv #(yaml/decode % keywords) data))
+  )
+
 (defn parse-string-all
   [^String string & {:keys [unsafe mark keywords max-aliases-for-collections allow-recursive-keys allow-duplicate-keys] :or {keywords true}}]
   (for [v (.loadAll (yaml/make-yaml :unsafe unsafe
@@ -17,7 +23,7 @@
 (defn yaml->edn
   "Converts a yaml string to edn"
   [yaml-string]
-  (parse-string-all yaml-string :keywords true))
+  (vec (parse-string-all yaml-string :keywords true)))
 
 (defn gen-edn
   "Generates edn from a yaml file"

test/resources/yaml/f1.yaml

@@ -1,2 +1,3 @@
 ---
 foo: bar
+list: [1, 2, 3]

test/ymlgen/commands/edn_test.clj

@@ -10,7 +10,8 @@
   (is (= [{:foo "bar" :test 1} {:a true}] (edn/yaml->edn "---\nfoo: bar\ntest: 1\n---\na: true"))))
 
 (deftest gen-edn-test
-  (is (= [{:foo "bar"}]
+  (is (= [{:foo "bar"
+           :list [1 2 3]}]
          (edn/gen-edn {:template-path (.getPath (io/resource "yaml/f1.yaml"))})))
   (is (= [{:foo "bar"}
           {:test {:bar "baz" :bool true :int 3}}]