nextcloud / server

lib/private/TemplateLayout.php

Indentation +330 added lines, -330 removed lines

@@ -57,334 +57,334 @@
 use OCP\Util;
 
 class TemplateLayout extends \OC_Template {
-	private static $versionHash = '';
-
-	/** @var CSSResourceLocator|null */
-	public static $cssLocator = null;
-
-	/** @var JSResourceLocator|null */
-	public static $jsLocator = null;
-
-	/** @var IConfig */
-	private $config;
-
-	/** @var IInitialStateService */
-	private $initialState;
-
-	/** @var INavigationManager */
-	private $navigationManager;
-
-	/**
-	 * @param string $renderAs
-	 * @param string $appId application id
-	 */
-	public function __construct($renderAs, $appId = '') {
-
-		/** @var IConfig */
-		$this->config = \OC::$server->get(IConfig::class);
-
-		/** @var IInitialStateService */
-		$this->initialState = \OC::$server->get(IInitialStateService::class);
-
-		// Add fallback theming variables if theming is disabled
-		if ($renderAs !== TemplateResponse::RENDER_AS_USER
-			|| !\OC::$server->getAppManager()->isEnabledForUser('theming')) {
-			// TODO cache generated default theme if enabled for fallback if server is erroring ?
-			Util::addStyle('theming', 'default');
-		}
-
-		// Decide which page we show
-		if ($renderAs === TemplateResponse::RENDER_AS_USER) {
-			/** @var INavigationManager */
-			$this->navigationManager = \OC::$server->get(INavigationManager::class);
-
-			parent::__construct('core', 'layout.user');
-			if (in_array(\OC_App::getCurrentApp(), ['settings','admin', 'help']) !== false) {
-				$this->assign('bodyid', 'body-settings');
-			} else {
-				$this->assign('bodyid', 'body-user');
-			}
-
-			$this->initialState->provideInitialState('core', 'active-app', $this->navigationManager->getActiveEntry());
-			$this->initialState->provideInitialState('core', 'apps', $this->navigationManager->getAll());
-			$this->initialState->provideInitialState('unified-search', 'limit-default', (int)$this->config->getAppValue('core', 'unified-search.limit-default', (string)SearchQuery::LIMIT_DEFAULT));
-			$this->initialState->provideInitialState('unified-search', 'min-search-length', (int)$this->config->getAppValue('core', 'unified-search.min-search-length', (string)1));
-			$this->initialState->provideInitialState('unified-search', 'live-search', $this->config->getAppValue('core', 'unified-search.live-search', 'yes') === 'yes');
-			Util::addScript('core', 'unified-search', 'core');
-
-			// Set body data-theme
-			$this->assign('enabledThemes', []);
-			if (\OC::$server->getAppManager()->isEnabledForUser('theming') && class_exists('\OCA\Theming\Service\ThemesService')) {
-				/** @var \OCA\Theming\Service\ThemesService */
-				$themesService = \OC::$server->get(\OCA\Theming\Service\ThemesService::class);
-				$this->assign('enabledThemes', $themesService->getEnabledThemes());
-			}
-
-			// set logo link target
-			$logoUrl = $this->config->getSystemValueString('logo_url', '');
-			$this->assign('logoUrl', $logoUrl);
-
-			// Add navigation entry
-			$this->assign('application', '');
-			$this->assign('appid', $appId);
-
-			$navigation = $this->navigationManager->getAll();
-			$this->assign('navigation', $navigation);
-			$settingsNavigation = $this->navigationManager->getAll('settings');
-			$this->assign('settingsnavigation', $settingsNavigation);
-
-			foreach ($navigation as $entry) {
-				if ($entry['active']) {
-					$this->assign('application', $entry['name']);
-					break;
-				}
-			}
-
-			foreach ($settingsNavigation as $entry) {
-				if ($entry['active']) {
-					$this->assign('application', $entry['name']);
-					break;
-				}
-			}
-
-			$userDisplayName = false;
-			$user = \OC::$server->get(IUserSession::class)->getUser();
-			if ($user) {
-				$userDisplayName = $user->getDisplayName();
-			}
-			$this->assign('user_displayname', $userDisplayName);
-			$this->assign('user_uid', \OC_User::getUser());
-
-			if ($user === null) {
-				$this->assign('userAvatarSet', false);
-				$this->assign('userStatus', false);
-			} else {
-				$this->assign('userAvatarSet', true);
-				$this->assign('userAvatarVersion', $this->config->getUserValue(\OC_User::getUser(), 'avatar', 'version', 0));
-			}
-		} elseif ($renderAs === TemplateResponse::RENDER_AS_ERROR) {
-			parent::__construct('core', 'layout.guest', '', false);
-			$this->assign('bodyid', 'body-login');
-			$this->assign('user_displayname', '');
-			$this->assign('user_uid', '');
-		} elseif ($renderAs === TemplateResponse::RENDER_AS_GUEST) {
-			parent::__construct('core', 'layout.guest');
-			\OC_Util::addStyle('guest');
-			$this->assign('bodyid', 'body-login');
-
-			$userDisplayName = false;
-			$user = \OC::$server->get(IUserSession::class)->getUser();
-			if ($user) {
-				$userDisplayName = $user->getDisplayName();
-			}
-			$this->assign('user_displayname', $userDisplayName);
-			$this->assign('user_uid', \OC_User::getUser());
-		} elseif ($renderAs === TemplateResponse::RENDER_AS_PUBLIC) {
-			parent::__construct('core', 'layout.public');
-			$this->assign('appid', $appId);
-			$this->assign('bodyid', 'body-public');
-
-			/** @var IRegistry $subscription */
-			$subscription = \OC::$server->query(IRegistry::class);
-			$showSimpleSignup = $this->config->getSystemValueBool('simpleSignUpLink.shown', true);
-			if ($showSimpleSignup && $subscription->delegateHasValidSubscription()) {
-				$showSimpleSignup = false;
-			}
-			$this->assign('showSimpleSignUpLink', $showSimpleSignup);
-		} else {
-			parent::__construct('core', 'layout.base');
-		}
-		// Send the language and the locale to our layouts
-		$lang = \OC::$server->getL10NFactory()->findLanguage();
-		$locale = \OC::$server->getL10NFactory()->findLocale($lang);
-
-		$lang = str_replace('_', '-', $lang);
-		$this->assign('language', $lang);
-		$this->assign('locale', $locale);
-
-		if (\OC::$server->getSystemConfig()->getValue('installed', false)) {
-			if (empty(self::$versionHash)) {
-				$v = \OC_App::getAppVersions();
-				$v['core'] = implode('.', \OCP\Util::getVersion());
-				self::$versionHash = substr(md5(implode(',', $v)), 0, 8);
-			}
-		} else {
-			self::$versionHash = md5('not installed');
-		}
-
-		// Add the js files
-		// TODO: remove deprecated OC_Util injection
-		$jsFiles = self::findJavascriptFiles(array_merge(\OC_Util::$scripts, Util::getScripts()));
-		$this->assign('jsfiles', []);
-		if ($this->config->getSystemValue('installed', false) && $renderAs != TemplateResponse::RENDER_AS_ERROR) {
-			// this is on purpose outside of the if statement below so that the initial state is prefilled (done in the getConfig() call)
-			// see https://github.com/nextcloud/server/pull/22636 for details
-			$jsConfigHelper = new JSConfigHelper(
-				\OC::$server->getL10N('lib'),
-				\OC::$server->query(Defaults::class),
-				\OC::$server->getAppManager(),
-				\OC::$server->getSession(),
-				\OC::$server->getUserSession()->getUser(),
-				$this->config,
-				\OC::$server->getGroupManager(),
-				\OC::$server->get(IniGetWrapper::class),
-				\OC::$server->getURLGenerator(),
-				\OC::$server->getCapabilitiesManager(),
-				\OC::$server->query(IInitialStateService::class)
-			);
-			$config = $jsConfigHelper->getConfig();
-			if (\OC::$server->getContentSecurityPolicyNonceManager()->browserSupportsCspV3()) {
-				$this->assign('inline_ocjs', $config);
-			} else {
-				$this->append('jsfiles', \OC::$server->getURLGenerator()->linkToRoute('core.OCJS.getConfig', ['v' => self::$versionHash]));
-			}
-		}
-		foreach ($jsFiles as $info) {
-			$web = $info[1];
-			$file = $info[2];
-			$this->append('jsfiles', $web.'/'.$file . $this->getVersionHashSuffix());
-		}
-
-		try {
-			$pathInfo = \OC::$server->getRequest()->getPathInfo();
-		} catch (\Exception $e) {
-			$pathInfo = '';
-		}
-
-		// Do not initialise scss appdata until we have a fully installed instance
-		// Do not load scss for update, errors, installation or login page
-		if (\OC::$server->getSystemConfig()->getValue('installed', false)
-			&& !\OCP\Util::needUpgrade()
-			&& $pathInfo !== ''
-			&& !preg_match('/^\/login/', $pathInfo)
-			&& $renderAs !== TemplateResponse::RENDER_AS_ERROR
-		) {
-			$cssFiles = self::findStylesheetFiles(\OC_Util::$styles);
-		} else {
-			// If we ignore the scss compiler,
-			// we need to load the guest css fallback
-			\OC_Util::addStyle('guest');
-			$cssFiles = self::findStylesheetFiles(\OC_Util::$styles, false);
-		}
-
-		$this->assign('cssfiles', []);
-		$this->assign('printcssfiles', []);
-		$this->assign('versionHash', self::$versionHash);
-		foreach ($cssFiles as $info) {
-			$web = $info[1];
-			$file = $info[2];
-
-			if (substr($file, -strlen('print.css')) === 'print.css') {
-				$this->append('printcssfiles', $web.'/'.$file . $this->getVersionHashSuffix());
-			} else {
-				$suffix = $this->getVersionHashSuffix($web, $file);
-
-				if (strpos($file, '?v=') == false) {
-					$this->append('cssfiles', $web.'/'.$file . $suffix);
-				} else {
-					$this->append('cssfiles', $web.'/'.$file . '-' . substr($suffix, 3));
-				}
-			}
-		}
-
-		$this->assign('initialStates', $this->initialState->getInitialStates());
-
-		$this->assign('id-app-content', $renderAs === TemplateResponse::RENDER_AS_USER ? '#app-content' : '#content');
-		$this->assign('id-app-navigation', $renderAs === TemplateResponse::RENDER_AS_USER ? '#app-navigation' : null);
-	}
-
-	/**
-	 * @param string $path
-	 * @param string $file
-	 * @return string
-	 */
-	protected function getVersionHashSuffix($path = false, $file = false) {
-		if ($this->config->getSystemValue('debug', false)) {
-			// allows chrome workspace mapping in debug mode
-			return "";
-		}
-		$themingSuffix = '';
-		$v = [];
-
-		if ($this->config->getSystemValue('installed', false)) {
-			if (\OC::$server->getAppManager()->isInstalled('theming')) {
-				$themingSuffix = '-' . $this->config->getAppValue('theming', 'cachebuster', '0');
-			}
-			$v = \OC_App::getAppVersions();
-		}
-
-		// Try the webroot path for a match
-		if ($path !== false && $path !== '') {
-			$appName = $this->getAppNamefromPath($path);
-			if (array_key_exists($appName, $v)) {
-				$appVersion = $v[$appName];
-				return '?v=' . substr(md5($appVersion), 0, 8) . $themingSuffix;
-			}
-		}
-		// fallback to the file path instead
-		if ($file !== false && $file !== '') {
-			$appName = $this->getAppNamefromPath($file);
-			if (array_key_exists($appName, $v)) {
-				$appVersion = $v[$appName];
-				return '?v=' . substr(md5($appVersion), 0, 8) . $themingSuffix;
-			}
-		}
-
-		return '?v=' . self::$versionHash . $themingSuffix;
-	}
-
-	/**
-	 * @param array $styles
-	 * @return array
-	 */
-	public static function findStylesheetFiles($styles, $compileScss = true) {
-		if (!self::$cssLocator) {
-			self::$cssLocator = \OCP\Server::get(CSSResourceLocator::class);
-		}
-		self::$cssLocator->find($styles);
-		return self::$cssLocator->getResources();
-	}
-
-	/**
-	 * @param string $path
-	 * @return string|boolean
-	 */
-	public function getAppNamefromPath($path) {
-		if ($path !== '' && is_string($path)) {
-			$pathParts = explode('/', $path);
-			if ($pathParts[0] === 'css') {
-				// This is a scss request
-				return $pathParts[1];
-			}
-			return end($pathParts);
-		}
-		return false;
-	}
-
-	/**
-	 * @param array $scripts
-	 * @return array
-	 */
-	public static function findJavascriptFiles($scripts) {
-		if (!self::$jsLocator) {
-			self::$jsLocator = \OCP\Server::get(JSResourceLocator::class);
-		}
-		self::$jsLocator->find($scripts);
-		return self::$jsLocator->getResources();
-	}
-
-	/**
-	 * Converts the absolute file path to a relative path from \OC::$SERVERROOT
-	 * @param string $filePath Absolute path
-	 * @return string Relative path
-	 * @throws \Exception If $filePath is not under \OC::$SERVERROOT
-	 */
-	public static function convertToRelativePath($filePath) {
-		$relativePath = explode(\OC::$SERVERROOT, $filePath);
-		if (count($relativePath) !== 2) {
-			throw new \Exception('$filePath is not under the \OC::$SERVERROOT');
-		}
-
-		return $relativePath[1];
-	}
+    private static $versionHash = '';
+
+    /** @var CSSResourceLocator|null */
+    public static $cssLocator = null;
+
+    /** @var JSResourceLocator|null */
+    public static $jsLocator = null;
+
+    /** @var IConfig */
+    private $config;
+
+    /** @var IInitialStateService */
+    private $initialState;
+
+    /** @var INavigationManager */
+    private $navigationManager;
+
+    /**
+     * @param string $renderAs
+     * @param string $appId application id
+     */
+    public function __construct($renderAs, $appId = '') {
+
+        /** @var IConfig */
+        $this->config = \OC::$server->get(IConfig::class);
+
+        /** @var IInitialStateService */
+        $this->initialState = \OC::$server->get(IInitialStateService::class);
+
+        // Add fallback theming variables if theming is disabled
+        if ($renderAs !== TemplateResponse::RENDER_AS_USER
+            || !\OC::$server->getAppManager()->isEnabledForUser('theming')) {
+            // TODO cache generated default theme if enabled for fallback if server is erroring ?
+            Util::addStyle('theming', 'default');
+        }
+
+        // Decide which page we show
+        if ($renderAs === TemplateResponse::RENDER_AS_USER) {
+            /** @var INavigationManager */
+            $this->navigationManager = \OC::$server->get(INavigationManager::class);
+
+            parent::__construct('core', 'layout.user');
+            if (in_array(\OC_App::getCurrentApp(), ['settings','admin', 'help']) !== false) {
+                $this->assign('bodyid', 'body-settings');
+            } else {
+                $this->assign('bodyid', 'body-user');
+            }
+
+            $this->initialState->provideInitialState('core', 'active-app', $this->navigationManager->getActiveEntry());
+            $this->initialState->provideInitialState('core', 'apps', $this->navigationManager->getAll());
+            $this->initialState->provideInitialState('unified-search', 'limit-default', (int)$this->config->getAppValue('core', 'unified-search.limit-default', (string)SearchQuery::LIMIT_DEFAULT));
+            $this->initialState->provideInitialState('unified-search', 'min-search-length', (int)$this->config->getAppValue('core', 'unified-search.min-search-length', (string)1));
+            $this->initialState->provideInitialState('unified-search', 'live-search', $this->config->getAppValue('core', 'unified-search.live-search', 'yes') === 'yes');
+            Util::addScript('core', 'unified-search', 'core');
+
+            // Set body data-theme
+            $this->assign('enabledThemes', []);
+            if (\OC::$server->getAppManager()->isEnabledForUser('theming') && class_exists('\OCA\Theming\Service\ThemesService')) {
+                /** @var \OCA\Theming\Service\ThemesService */
+                $themesService = \OC::$server->get(\OCA\Theming\Service\ThemesService::class);
+                $this->assign('enabledThemes', $themesService->getEnabledThemes());
+            }
+
+            // set logo link target
+            $logoUrl = $this->config->getSystemValueString('logo_url', '');
+            $this->assign('logoUrl', $logoUrl);
+
+            // Add navigation entry
+            $this->assign('application', '');
+            $this->assign('appid', $appId);
+
+            $navigation = $this->navigationManager->getAll();
+            $this->assign('navigation', $navigation);
+            $settingsNavigation = $this->navigationManager->getAll('settings');
+            $this->assign('settingsnavigation', $settingsNavigation);
+
+            foreach ($navigation as $entry) {
+                if ($entry['active']) {
+                    $this->assign('application', $entry['name']);
+                    break;
+                }
+            }
+
+            foreach ($settingsNavigation as $entry) {
+                if ($entry['active']) {
+                    $this->assign('application', $entry['name']);
+                    break;
+                }
+            }
+
+            $userDisplayName = false;
+            $user = \OC::$server->get(IUserSession::class)->getUser();
+            if ($user) {
+                $userDisplayName = $user->getDisplayName();
+            }
+            $this->assign('user_displayname', $userDisplayName);
+            $this->assign('user_uid', \OC_User::getUser());
+
+            if ($user === null) {
+                $this->assign('userAvatarSet', false);
+                $this->assign('userStatus', false);
+            } else {
+                $this->assign('userAvatarSet', true);
+                $this->assign('userAvatarVersion', $this->config->getUserValue(\OC_User::getUser(), 'avatar', 'version', 0));
+            }
+        } elseif ($renderAs === TemplateResponse::RENDER_AS_ERROR) {
+            parent::__construct('core', 'layout.guest', '', false);
+            $this->assign('bodyid', 'body-login');
+            $this->assign('user_displayname', '');
+            $this->assign('user_uid', '');
+        } elseif ($renderAs === TemplateResponse::RENDER_AS_GUEST) {
+            parent::__construct('core', 'layout.guest');
+            \OC_Util::addStyle('guest');
+            $this->assign('bodyid', 'body-login');
+
+            $userDisplayName = false;
+            $user = \OC::$server->get(IUserSession::class)->getUser();
+            if ($user) {
+                $userDisplayName = $user->getDisplayName();
+            }
+            $this->assign('user_displayname', $userDisplayName);
+            $this->assign('user_uid', \OC_User::getUser());
+        } elseif ($renderAs === TemplateResponse::RENDER_AS_PUBLIC) {
+            parent::__construct('core', 'layout.public');
+            $this->assign('appid', $appId);
+            $this->assign('bodyid', 'body-public');
+
+            /** @var IRegistry $subscription */
+            $subscription = \OC::$server->query(IRegistry::class);
+            $showSimpleSignup = $this->config->getSystemValueBool('simpleSignUpLink.shown', true);
+            if ($showSimpleSignup && $subscription->delegateHasValidSubscription()) {
+                $showSimpleSignup = false;
+            }
+            $this->assign('showSimpleSignUpLink', $showSimpleSignup);
+        } else {
+            parent::__construct('core', 'layout.base');
+        }
+        // Send the language and the locale to our layouts
+        $lang = \OC::$server->getL10NFactory()->findLanguage();
+        $locale = \OC::$server->getL10NFactory()->findLocale($lang);
+
+        $lang = str_replace('_', '-', $lang);
+        $this->assign('language', $lang);
+        $this->assign('locale', $locale);
+
+        if (\OC::$server->getSystemConfig()->getValue('installed', false)) {
+            if (empty(self::$versionHash)) {
+                $v = \OC_App::getAppVersions();
+                $v['core'] = implode('.', \OCP\Util::getVersion());
+                self::$versionHash = substr(md5(implode(',', $v)), 0, 8);
+            }
+        } else {
+            self::$versionHash = md5('not installed');
+        }
+
+        // Add the js files
+        // TODO: remove deprecated OC_Util injection
+        $jsFiles = self::findJavascriptFiles(array_merge(\OC_Util::$scripts, Util::getScripts()));
+        $this->assign('jsfiles', []);
+        if ($this->config->getSystemValue('installed', false) && $renderAs != TemplateResponse::RENDER_AS_ERROR) {
+            // this is on purpose outside of the if statement below so that the initial state is prefilled (done in the getConfig() call)
+            // see https://github.com/nextcloud/server/pull/22636 for details
+            $jsConfigHelper = new JSConfigHelper(
+                \OC::$server->getL10N('lib'),
+                \OC::$server->query(Defaults::class),
+                \OC::$server->getAppManager(),
+                \OC::$server->getSession(),
+                \OC::$server->getUserSession()->getUser(),
+                $this->config,
+                \OC::$server->getGroupManager(),
+                \OC::$server->get(IniGetWrapper::class),
+                \OC::$server->getURLGenerator(),
+                \OC::$server->getCapabilitiesManager(),
+                \OC::$server->query(IInitialStateService::class)
+            );
+            $config = $jsConfigHelper->getConfig();
+            if (\OC::$server->getContentSecurityPolicyNonceManager()->browserSupportsCspV3()) {
+                $this->assign('inline_ocjs', $config);
+            } else {
+                $this->append('jsfiles', \OC::$server->getURLGenerator()->linkToRoute('core.OCJS.getConfig', ['v' => self::$versionHash]));
+            }
+        }
+        foreach ($jsFiles as $info) {
+            $web = $info[1];
+            $file = $info[2];
+            $this->append('jsfiles', $web.'/'.$file . $this->getVersionHashSuffix());
+        }
+
+        try {
+            $pathInfo = \OC::$server->getRequest()->getPathInfo();
+        } catch (\Exception $e) {
+            $pathInfo = '';
+        }
+
+        // Do not initialise scss appdata until we have a fully installed instance
+        // Do not load scss for update, errors, installation or login page
+        if (\OC::$server->getSystemConfig()->getValue('installed', false)
+            && !\OCP\Util::needUpgrade()
+            && $pathInfo !== ''
+            && !preg_match('/^\/login/', $pathInfo)
+            && $renderAs !== TemplateResponse::RENDER_AS_ERROR
+        ) {
+            $cssFiles = self::findStylesheetFiles(\OC_Util::$styles);
+        } else {
+            // If we ignore the scss compiler,
+            // we need to load the guest css fallback
+            \OC_Util::addStyle('guest');
+            $cssFiles = self::findStylesheetFiles(\OC_Util::$styles, false);
+        }
+
+        $this->assign('cssfiles', []);
+        $this->assign('printcssfiles', []);
+        $this->assign('versionHash', self::$versionHash);
+        foreach ($cssFiles as $info) {
+            $web = $info[1];
+            $file = $info[2];
+
+            if (substr($file, -strlen('print.css')) === 'print.css') {
+                $this->append('printcssfiles', $web.'/'.$file . $this->getVersionHashSuffix());
+            } else {
+                $suffix = $this->getVersionHashSuffix($web, $file);
+
+                if (strpos($file, '?v=') == false) {
+                    $this->append('cssfiles', $web.'/'.$file . $suffix);
+                } else {
+                    $this->append('cssfiles', $web.'/'.$file . '-' . substr($suffix, 3));
+                }
+            }
+        }
+
+        $this->assign('initialStates', $this->initialState->getInitialStates());
+
+        $this->assign('id-app-content', $renderAs === TemplateResponse::RENDER_AS_USER ? '#app-content' : '#content');
+        $this->assign('id-app-navigation', $renderAs === TemplateResponse::RENDER_AS_USER ? '#app-navigation' : null);
+    }
+
+    /**
+     * @param string $path
+     * @param string $file
+     * @return string
+     */
+    protected function getVersionHashSuffix($path = false, $file = false) {
+        if ($this->config->getSystemValue('debug', false)) {
+            // allows chrome workspace mapping in debug mode
+            return "";
+        }
+        $themingSuffix = '';
+        $v = [];
+
+        if ($this->config->getSystemValue('installed', false)) {
+            if (\OC::$server->getAppManager()->isInstalled('theming')) {
+                $themingSuffix = '-' . $this->config->getAppValue('theming', 'cachebuster', '0');
+            }
+            $v = \OC_App::getAppVersions();
+        }
+
+        // Try the webroot path for a match
+        if ($path !== false && $path !== '') {
+            $appName = $this->getAppNamefromPath($path);
+            if (array_key_exists($appName, $v)) {
+                $appVersion = $v[$appName];
+                return '?v=' . substr(md5($appVersion), 0, 8) . $themingSuffix;
+            }
+        }
+        // fallback to the file path instead
+        if ($file !== false && $file !== '') {
+            $appName = $this->getAppNamefromPath($file);
+            if (array_key_exists($appName, $v)) {
+                $appVersion = $v[$appName];
+                return '?v=' . substr(md5($appVersion), 0, 8) . $themingSuffix;
+            }
+        }
+
+        return '?v=' . self::$versionHash . $themingSuffix;
+    }
+
+    /**
+     * @param array $styles
+     * @return array
+     */
+    public static function findStylesheetFiles($styles, $compileScss = true) {
+        if (!self::$cssLocator) {
+            self::$cssLocator = \OCP\Server::get(CSSResourceLocator::class);
+        }
+        self::$cssLocator->find($styles);
+        return self::$cssLocator->getResources();
+    }
+
+    /**
+     * @param string $path
+     * @return string|boolean
+     */
+    public function getAppNamefromPath($path) {
+        if ($path !== '' && is_string($path)) {
+            $pathParts = explode('/', $path);
+            if ($pathParts[0] === 'css') {
+                // This is a scss request
+                return $pathParts[1];
+            }
+            return end($pathParts);
+        }
+        return false;
+    }
+
+    /**
+     * @param array $scripts
+     * @return array
+     */
+    public static function findJavascriptFiles($scripts) {
+        if (!self::$jsLocator) {
+            self::$jsLocator = \OCP\Server::get(JSResourceLocator::class);
+        }
+        self::$jsLocator->find($scripts);
+        return self::$jsLocator->getResources();
+    }
+
+    /**
+     * Converts the absolute file path to a relative path from \OC::$SERVERROOT
+     * @param string $filePath Absolute path
+     * @return string Relative path
+     * @throws \Exception If $filePath is not under \OC::$SERVERROOT
+     */
+    public static function convertToRelativePath($filePath) {
+        $relativePath = explode(\OC::$SERVERROOT, $filePath);
+        if (count($relativePath) !== 2) {
+            throw new \Exception('$filePath is not under the \OC::$SERVERROOT');
+        }
+
+        return $relativePath[1];
+    }
 }