Better use of Console component features

src/Symfony/Installer/NewCommand.php

@@ -60,15 +60,18 @@ protected function configure()
         ;
     }
 
-    protected function execute(InputInterface $input, OutputInterface $output)
+    protected function initialize(InputInterface $input, OutputInterface $output)
     {
         $this->fs = new Filesystem();
         $directory = rtrim(trim($input->getArgument('directory')), DIRECTORY_SEPARATOR);
         $this->projectDir = $this->fs->isAbsolutePath($directory) ? $directory : getcwd().DIRECTORY_SEPARATOR.$directory;
         $this->projectName = basename($directory);
         $this->version = trim($input->getArgument('version'));
         $this->output = $output;
+    }
 
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
         try {
             $this
                 ->checkProjectName()

src/Symfony/Installer/SelfUpdateCommand.php

@@ -37,6 +37,14 @@ protected function configure()
         ;
     }
 
+    /**
+     * The self-update command is only available when using the installer via the PHAR file.
+     */
+    public function isEnabled()
+    {
+        return 'phar://' === substr(__DIR__, 0, 7);
+    }
+
     protected function execute(InputInterface $input, OutputInterface $output)
     {
         $fs = new Filesystem();

symfony

@@ -23,11 +23,7 @@ $appVersion = '0.6.0-DEV';
 $app = new Symfony\Component\Console\Application('Symfony Installer', $appVersion);
 $app->add(new Symfony\Installer\AboutCommand($appVersion));
 $app->add(new Symfony\Installer\NewCommand());
-
-// enable the self-update command only when using the PHAR file
-if ('phar://' === substr(__DIR__, 0, 7)) {
-    $app->add(new Symfony\Installer\SelfUpdateCommand());
-}
+$app->add(new Symfony\Installer\SelfUpdateCommand());
 
 $app->setDefaultCommand('about');