Create a function to get the multisite name

config/services/multisite.yml

@@ -6,6 +6,6 @@ services:
       - { name: drupal.command }
   console.multisite_update:
     class: Drupal\Console\Command\Multisite\UpdateCommand
-    arguments: ['@app.root']
+    arguments: ['@app.root', '@console.site']
     tags:
       - { name: drupal.command }

src/Command/Generate/ModuleCommand.php

@@ -199,7 +199,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
         // Check that it is an absolute path or otherwise create an absolute path using appRoot
         $modulePath = $input->getOption('module-path');
         if(is_null($modulePath)) {
-            $uri = parse_url($input->getParameterOption(['--uri', '-l'], 'default'), PHP_URL_HOST);
+            $uri = $this->site->getMultisiteName($input);
             $defaultModulePath = 'modules/custom';
             $modulePath = $this->site->multisiteMode($uri)? 'sites/'.$this->site->getMultisiteDir($uri).'/'.$defaultModulePath : $defaultModulePath;
         }
@@ -315,7 +315,7 @@ function ($machine_name) use ($validator) {
 
         $modulePath = $input->getOption('module-path');
         if (!$modulePath) {
-            $uri = parse_url($input->getParameterOption(['--uri', '-l'], 'default'), PHP_URL_HOST);
+            $uri = $this->site->getMultisiteName($input);
             $defaultModulePath = 'modules/custom';
             $modulePath = $this->getIo()->ask(
                 $this->trans('commands.generate.module.questions.module-path'),

src/Command/Generate/ThemeCommand.php

@@ -195,7 +195,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
         // Check that it is an absolute path or otherwise create an absolute path using appRoot
         $theme_path = $input->getOption('theme-path');
         if(is_null($theme_path)) {
-            $uri = parse_url($input->getParameterOption(['--uri', '-l'], 'default'), PHP_URL_HOST);
+            $uri = $this->site->getMultisiteName($input);
             $defaultThemePath = 'themes/custom';
             $theme_path = $this->site->multisiteMode($uri)? 'sites/'.$this->site->getMultisiteDir($uri).'/'.$defaultThemePath : $defaultThemePath;
         }
@@ -291,7 +291,7 @@ function ($machine_name) {
 
         $theme_path = $input->getOption('theme-path');
         if (!$theme_path) {
-            $uri = parse_url($input->getParameterOption(['--uri', '-l'], 'default'), PHP_URL_HOST);
+            $uri = $this->site->getMultisiteName($input);
             $defaultThemePath = 'themes/custom';
             $theme_path = $this->getIo()->ask(
                 $this->trans('commands.generate.theme.questions.theme-path'),

src/Command/Generate/ThemeSettingCommand.php

@@ -170,13 +170,13 @@ protected function execute(InputInterface $input, OutputInterface $output)
         $theme = $this->validator->validateModuleName($input->getOption('theme'));
         $theme_path = $input->getOption('theme-path');
         if (is_null($theme_path)) {
-            $uri = parse_url($input->getParameterOption(['--uri', '-l'], 'default'), PHP_URL_HOST);
+            $uri = $this->site->getMultisiteName($input);
             $defaultThemePath = 'themes/custom';
             $theme_path = $this->site->multisiteMode($uri)? 'sites/'.$this->site->getMultisiteDir($uri).'/'.$defaultThemePath : $defaultThemePath;
         }
         $theme_path = Path::isAbsolute($theme_path) ? $theme_path : Path::makeAbsolute($theme_path, $this->appRoot);
         $theme_path = $this->validator->validateModulePath($theme_path, true);
-        
+
         $favicon = $input->getOption('favicon');
         $commentUserPicture = $input->getOption('comment-user-picture');
         $commentUserVerification = $input->getOption('comment-user-verification');

src/Command/Multisite/UpdateCommand.php

@@ -8,6 +8,7 @@
 namespace Drupal\Console\Command\Multisite;
 
 use Drupal\Console\Core\Command\Command;
+use Drupal\Console\Utils\Site;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Input\InputOption;
 use Symfony\Component\Console\Output\OutputInterface;
@@ -23,14 +24,21 @@ class UpdateCommand extends Command
 {
     protected $appRoot;
 
+    /**
+    * @var Site
+    */
+    protected $site;
+
     /**
      * DebugCommand constructor.
      *
      * @param $appRoot
+     * @param Site $site
      */
-    public function __construct($appRoot)
+    public function __construct($appRoot, Site $site)
     {
         $this->appRoot = $appRoot;
+        $this->site = $site;
         parent::__construct();
     }
 
@@ -81,7 +89,7 @@ public function configure()
      */
     protected function interact(InputInterface $input, OutputInterface $output)
     {
-        $this->uri = parse_url($input->getParameterOption(['--uri', '-l'], 'default'), PHP_URL_HOST);
+        $this->uri = $this->site->getMultisiteName($input);
 
         $sites = $this->getMultisite($this->uri);
         if ($this->uri == "default") {
@@ -113,7 +121,7 @@ protected function execute(InputInterface $input, OutputInterface $output)
         $this->fs = new Filesystem();
 
         if (empty($this->uri)) {
-            $uri =  parse_url($input->getParameterOption(['--uri', '-l'], 'default'), PHP_URL_HOST);
+            $uri =  $this->site->getMultisiteName($input);
             $sites = $this->getMultisite($uri);
             $this->uri = $sites[$uri];
         }

src/Command/Site/InstallCommand.php

@@ -287,7 +287,7 @@ function ($profile) {
             if ($dbType === 'sqlite') {
                 // --db-file option
                 if (!$input->getOption('db-file')) {
-                    $uri = parse_url($input->getParameterOption(['--uri', '-l'], 'default'), PHP_URL_HOST);
+                    $uri = $this->site->getMultisiteName($input);
                     $uriPath = $this->site->multisiteMode($uri) ? $this->site->getMultisiteDir($uri) : 'default';
                     $dbFile = $this->getIo()->ask(
                         $this->trans('commands.migrate.execute.questions.db-file'),
@@ -383,7 +383,7 @@ function ($profile) {
      */
     protected function execute(InputInterface $input, OutputInterface $output)
     {
-        $uri = parse_url($input->getParameterOption(['--uri', '-l'], 'default'), PHP_URL_HOST);
+        $uri = $this->site->getMultisiteName($input);
 
         if ($this->site->multisiteMode($uri)) {
             if (!$this->site->validMultisite($uri)) {

src/Utils/Site.php

@@ -179,6 +179,21 @@ public function getAutoload()
         return include $autoLoadFile;
     }
 
+    /**
+    * @param InputInterface $input
+    * @return string
+    */
+    public function getMultisiteName($input)
+    {
+        $uri = $input->getParameterOption(['--uri', '-l'], 'default');
+
+        if ($uri && !preg_match('/^(http|https):\/\//', $uri)) {
+            $uri = sprintf('http://%s', $uri);
+        }
+
+        return  parse_url($uri, PHP_URL_HOST);
+    }
+
     /**
      * @return boolean
      */