fix procedure syntax (#1131)

Author: xuwei-k

src/main/scala/com/typesafe/sbt/packager/debian/DebianPlugin.scala

@@ -380,7 +380,7 @@ trait DebianPluginLike {
     script
   }
 
-  private[debian] final def validateUserGroupNames(user: String, streams: TaskStreams) {
+  private[debian] final def validateUserGroupNames(user: String, streams: TaskStreams): Unit = {
     if ((UserNamePattern findFirstIn user).isEmpty) {
       streams.log.warn(
         "The user or group '" + user + "' may contain invalid characters for Debian based distributions"

src/main/scala/com/typesafe/sbt/packager/universal/ZipHelper.scala

@@ -153,7 +153,7 @@ object ZipHelper {
     * @param f: FileSystem => Unit, logic working in the filesystem
     * @see http://stackoverflow.com/questions/9873845/java-7-zip-file-system-provider-doesnt-seem-to-accept-spaces-in-uri
     */
-  def withZipFilesystem(zipFile: File, overwrite: Boolean = true)(f: FileSystem => Unit) {
+  def withZipFilesystem(zipFile: File, overwrite: Boolean = true)(f: FileSystem => Unit): Unit = {
     if (overwrite) Files deleteIfExists zipFile.toPath
     val env = Map("create" -> "true").asJava
     val uri = new URI("jar", zipFile.toPath.toUri().toString(), null)

src/sbt-test/debian/systemd-deb/src/main/scala/test/Main.scala

@@ -1,7 +1,7 @@
 package test
 
 object Main {
-  def main (args: Array[String]) {
+  def main (args: Array[String]): Unit = {
     //server app imitation
     while (true){
       Thread.sleep(1000L)

src/sbt-test/debian/test-executableScriptName/src/main/scala/test/Main.scala

@@ -1,7 +1,7 @@
 package test
 
 object Main {
-  def main (args: Array[String]) {
+  def main (args: Array[String]): Unit = {
     //server app imitation
     while (true){
       Thread.sleep(1000L)

src/sbt-test/rpm/path-override-rpm/src/main/scala/test/Main.scala

@@ -1,7 +1,7 @@
 package test
 
 object Main {
-  def main (args: Array[String]) {
+  def main (args: Array[String]): Unit = {
     //server app imitation
     while (true){
       Thread.sleep(1000L)

src/sbt-test/rpm/systemd-rpm/src/main/scala/test/Main.scala

@@ -1,7 +1,7 @@
 package test
 
 object Main {
-  def main (args: Array[String]) {
+  def main (args: Array[String]): Unit = {
     //server app imitation
     while (true){
       Thread.sleep(1000L)

src/sbt-test/rpm/test-executableScriptName/src/main/scala/test/Main.scala

@@ -1,7 +1,7 @@
 package test
 
 object Main {
-  def main (args: Array[String]) {
+  def main (args: Array[String]): Unit = {
     //server app imitation
     while (true){
       Thread.sleep(1000L)

src/test/scala/com/typesafe/sbt/packager/universal/ZipHelperSpec.scala

@@ -13,18 +13,17 @@ class ZipHelperSpec extends WordSpec with Matchers with BeforeAndAfterEach with
   var tmp: Path = _
   val toDelete = scala.collection.mutable.ListBuffer[Path]()
 
-  override def beforeEach {
+  override def beforeEach: Unit = {
     tmp = Files createTempDirectory "_sbt-native-packager"
     toDelete += tmp
   }
 
-  override def afterAll {
+  override def afterAll: Unit =
     toDelete foreach { dir =>
       scala.util.Try {
         Files.walkFileTree(dir, new DeleteDirectoryVisitor)
       }
     }
-  }
 
   "The ZipHelper.zip" should {
 
@@ -104,7 +103,7 @@ class ZipHelperSpec extends WordSpec with Matchers with BeforeAndAfterEach with
 
   private type Zipper = (Traversable[(File, String)], File) => Unit
 
-  private def zipSingleFile(zipper: Zipper) {
+  private def zipSingleFile(zipper: Zipper): Unit = {
     val out = tmp resolve "single.zip"
     val file = Files createFile (tmp resolve "single.txt")
 
@@ -117,7 +116,7 @@ class ZipHelperSpec extends WordSpec with Matchers with BeforeAndAfterEach with
 
   }
 
-  private def zipNestedFile(zipper: Zipper) {
+  private def zipNestedFile(zipper: Zipper): Unit = {
     // setup
     val out = tmp resolve "nested.zip"
     val dir = tmp resolve "dir"
@@ -137,7 +136,7 @@ class ZipHelperSpec extends WordSpec with Matchers with BeforeAndAfterEach with
     }
   }
 
-  private def zipNestedDirsWithFiles(zipper: Zipper) {
+  private def zipNestedDirsWithFiles(zipper: Zipper): Unit = {
     // setup
     val out = tmp resolve "nested-containing.zip"
     val dir = tmp resolve "dir"
@@ -158,7 +157,7 @@ class ZipHelperSpec extends WordSpec with Matchers with BeforeAndAfterEach with
     }
   }
 
-  private def createNecessaryDirectories(zipper: Zipper) {
+  private def createNecessaryDirectories(zipper: Zipper): Unit = {
     val out = tmp resolve "dir-creation.zip"
     val file = tmp resolve "dir-file.txt"
     Files createFile file
@@ -176,7 +175,7 @@ class ZipHelperSpec extends WordSpec with Matchers with BeforeAndAfterEach with
     }
   }
 
-  private def preserveExecutableBit(zipper: Zipper) {
+  private def preserveExecutableBit(zipper: Zipper): Unit = {
     val out = tmp resolve "exec.zip"
     val exec = tmp resolve "exec"
     Files createFile exec

test-project-simple/src/main/scala/ExampleApp.scala

@@ -16,7 +16,7 @@ object ExampleApp extends App {
 }
 
 case class HelloWorld(i: Int) extends Runnable {
-  def run() {
+  def run(): Unit = {
     println(s"[$i] Hello, world!")
   }
 }

test-project-windows/src/main/scala/ExampleApp.scala

@@ -16,7 +16,7 @@ object ExampleApp extends App {
 }
 
 case class HelloWorld(i: Int) extends Runnable {
-  def run() {
+  def run(): Unit = {
     println(s"[$i] Hello, world!")
   }
 }