fix stream problem

app/apps.service.ts

@@ -72,6 +72,10 @@ export class AppsService {
         }
     }
 
+    private getTarStream(p: child_process.ChildProcessWithoutNullStreams) {
+        return process.platform === 'win32' ? p.stderr : p.stdout;
+    }
+
     private apps: Map<string, App>;
 
     constructor(private http: Http, private settingsService: SettingsService, private ref: ApplicationRef,
@@ -1009,10 +1013,11 @@ export class AppsService {
             Logger.info('Start to extract... Command Line: ' + this.tarPath, tarArgs.join(' '));
             let tarProcess = child_process.spawn(this.tarPath, tarArgs);
             let rl = readline.createInterface({
-                input: <ReadableStream>tarProcess.stderr,
+                input: this.getTarStream(tarProcess),
             });
             rl.on('line', (input: string) => {
-                observer.next(input.split(' ', 2)[1]);
+                const line = input.split(' ', 2).pop();
+                observer.next(line);
             });
             tarProcess.on('exit', (code) => {
                 if (code === 0) {