Merge pull request #1033 from nextcloud/fix_theming_autoloader_magic

Fix theming autoloader magic

apps/theming/lib/Settings/Admin.php

@@ -29,21 +29,20 @@
 use OCP\IL10N;
 use OCP\IURLGenerator;
 use OCP\Settings\ISettings;
-use \OC_Defaults;
 
 class Admin implements ISettings {
 	/** @var IConfig */
 	private $config;
 	/** @var IL10N */
 	private $l;
-	/** @var ThemingDefaults|OC_Defaults */
+	/** @var ThemingDefaults */
 	private $themingDefaults;
 	/** @var IURLGenerator */
 	private $urlGenerator;
 
 	public function __construct(IConfig $config,
 								IL10N $l,
-								OC_Defaults $themingDefaults,
+								ThemingDefaults $themingDefaults,
 								IURLGenerator $urlGenerator) {
 		$this->config = $config;
 		$this->l = $l;

lib/private/Server.php

@@ -643,10 +643,16 @@ public function __construct($webRoot, \OC\Config $config) {
 			return $factory->getManager();
 		});
 		$this->registerService('ThemingDefaults', function(Server $c) {
-			try {
-				$classExists = class_exists('OCA\Theming\ThemingDefaults');
-			} catch (\OCP\AutoloadNotAllowedException $e) {
-				// App disabled or in maintenance mode
+			/*
+			 * Dark magic for autoloader.
+			 * If we do a class_exists it will try to load the class which will
+			 * make composer cache the result. Resulting in errors when enabling
+			 * the theming app.
+			 */
+			$prefixes = \OC::$composerAutoloader->getPrefixesPsr4();
+			if (isset($prefixes['OCA\\Theming\\'])) {
+				$classExists = true;
+			} else {
 				$classExists = false;
 			}