Remove the redundant code used to load an interface

Fix #211

Author: Minggang Wang

index.js

@@ -166,16 +166,7 @@ let rcl = {
    * @return {object} - the object of the required package/interface.
    */
   require(name) {
-    if (typeof (name.package) === 'string' && typeof (name.type) === 'string' && typeof (name.message) === 'string') {
-      return loader.loadInterface(name.package, name.type, name.message);
-    }
-
-    if (name.indexOf('/') !== -1) {
-      let [packageName, type, messageName] = name.split('/');
-      return loader.loadInterface(packageName, type, messageName);
-    }
-
-    return loader.loadInterfaceInPackage(name);
+    return loader.loadInterface(name);
   },
 
   /**

lib/interface_loader.js

@@ -46,18 +46,22 @@ let interfaceLoader = {
       return this.loadInterface(packageName, type, messageName);
     }
 
+    // Suppose the name is a package, and traverse the path to collect the IDL files.
+    let packagePath = path.join(generator.generatedRoot, name);
+
+    // eslint-disable-next-line
+    let interfaces = fs.readdirSync(packagePath);
+    if (interfaces.length > 0) {
+      return this.loadInterfaceByPath(packagePath, interfaces);
+    }
+
     throw new TypeError('A string argument in expected in "package/type/message" format');
   },
 
-  loadInterfaceInPackage(packageName) {
-    let packagePath = path.join(generator.generatedRoot, packageName);
-    // The files under the package folder are limited, so it will not cost too
-    // much time and result in blocking the main thread.
-    // eslint-disable-next-line
-    let files = fs.readdirSync(packagePath);
+  loadInterfaceByPath(packagePath, interfaces) {
     let interfaceInfos = [];
 
-    files.forEach((file) => {
+    interfaces.forEach((file) => {
       let results = file.match(/\w+__(\w+)__(\w+).js$/);
       let type = results[1];
       let name = results[2];