first steps with bb

bb.edn

@@ -0,0 +1,2 @@
+{:deps {dda/dda-devops-build {:local/root "."}}}
+

dda-devops-build.sh

@@ -0,0 +1,6 @@
+#!/usr/bin/env bb
+
+(require '[dda.devops-build.main :as build])
+
+(when (= *file* (System/getProperty "babashka.file"))
+  (apply build/-main *command-line-args*))

deps.edn

@@ -0,0 +1,3 @@
+{:paths ["src/main/clj"]
+ :deps {org.clojure/spec.alpha {:mvn/version "0.4.233"}
+        orchestra {:mvn/version "2021.01.01-1"}}}

src/main/clj/dda/devops_build/main.clj

@@ -0,0 +1,17 @@
+(ns dda.devops-build.main)
+(require '[clojure.spec.alpha :as s])
+
+(s/def ::options (s/* #{"-h"}))
+(s/def ::cmd-args (s/cat :options ::options
+                         :args any?))
+
+(defn invalid-args-msg
+  [spec args]
+  (s/explain spec args)
+  (println (str "Bad commandline arguments\n")))
+
+(defn -main [& cmd-args]
+  (let [parsed-args-cmd (s/conform ::cmd-args cmd-args)]
+    (if (= ::s/invalid parsed-args-cmd)
+      (invalid-args-msg ::cmd-args cmd-args)
+      (println parsed-args-cmd))))