First proper draft of DSL for Groovy Commands

Users can declare or Command, OptionHandler classes in an init script
or they can use a DSL, e.g.

command("foo") { args -> println "Do stuff with ${args} array" }

or

command("foo") {
  options { option "bar", "Help text for bar option" ithOptionArg() ofType Integer }
  run { options -> println "Do stuff with ${options.valueOf('bar')}" }
}

spring-boot-cli/src/test/resources/scripts/closure.groovy

@@ -0,0 +1,24 @@
+/*
+ * Copyright 2012-2013 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+def foo() {
+	"Foo"
+}
+ 
+command("foo") { options ->
+	def foo = foo()
+	println "Hello ${foo} ${options.nonOptionArguments()}: ${options.has('foo')} ${options.valueOf('bar')}"
+}

spring-boot-cli/src/test/resources/scripts/commands.groovy

@@ -0,0 +1,21 @@
+/*
+ * Copyright 2012-2013 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+command("foo") { args ->
+
+	println "Hello Command"
+
+}

spring-boot-cli/src/test/resources/scripts/options.groovy

@@ -14,8 +14,10 @@
  * limitations under the License.
  */
 
-command("foo") { args ->
-
-	println "Hello Command"
-
+command("foo") {
+	options {
+		option "foo", "Some foo description" withOptionalArg()
+		option "bar", "Some bar" withOptionalArg()
+	}
+	run { options -> println "Hello ${options.nonOptionArguments()}: ${options.has('foo')} ${options.valueOf('bar')}" }
 }