Adds rule to build GenerateInterfaces as a binary.

Author: damonkohler

message_generation/build.gradle

@@ -24,3 +24,5 @@ dependencies {
   compile project(':gradle_plugins')
 }
 
+apply plugin: "application"
+mainClassName = "org.ros.internal.message.GenerateInterfaces"

message_generation/src/main/java/org/ros/internal/message/GenerateInterfaces.java

@@ -1,12 +1,12 @@
 /*
  * Copyright (C) 2011 Google Inc.
- * 
+ *
  * 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
@@ -161,12 +161,12 @@ public static void main(String[] args) {
     String rosPackagePath = System.getenv(ROS_PACKAGE_PATH);
     // Overwrite with a supplied package path if specified (--package-path=)
     for (ListIterator<String> iter = arguments.listIterator(); iter.hasNext(); ) {
-    	String arg = iter.next();
-    	if (arg.contains("--package-path=")) {
-    		rosPackagePath = arg.replace("--package-path=", "");
-    		iter.remove();
-    		break;
-    	}
+      String arg = iter.next();
+      if (arg.contains("--package-path=")) {
+        rosPackagePath = arg.replace("--package-path=", "");
+        iter.remove();
+        break;
+      }
     }
     Collection<File> packagePath = Lists.newArrayList();
     for (String path : rosPackagePath.split(File.pathSeparator)) {