534 lines
17 KiB
PHP
534 lines
17 KiB
PHP
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<?php
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/**
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* @copyright Copyright (c) 2016, John Molakvoæ (skjnldsv@protonmail.com)
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*
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* @author Christoph Wurst <christoph@winzerhof-wurst.at>
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* @author John Molakvoæ (skjnldsv) <skjnldsv@protonmail.com>
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* @author Julius Haertl <jus@bitgrid.net>
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* @author Julius Härtl <jus@bitgrid.net>
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* @author Morris Jobke <hey@morrisjobke.de>
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* @author Robin Appelman <robin@icewind.nl>
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* @author Roeland Jago Douma <roeland@famdouma.nl>
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* @author Roland Tapken <roland@bitarbeiter.net>
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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namespace OC\Template;
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use OC\AppConfig;
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use OC\Files\AppData\Factory;
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use OC\Memcache\NullCache;
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use OCP\AppFramework\Utility\ITimeFactory;
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use OCP\Files\IAppData;
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use OCP\Files\NotFoundException;
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use OCP\Files\NotPermittedException;
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use OCP\Files\SimpleFS\ISimpleFile;
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use OCP\Files\SimpleFS\ISimpleFolder;
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use OCP\ICache;
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use OCP\ICacheFactory;
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use OCP\IConfig;
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use OCP\ILogger;
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use OCP\IMemcache;
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use OCP\IURLGenerator;
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use ScssPhp\ScssPhp\Compiler;
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use ScssPhp\ScssPhp\Exception\ParserException;
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use ScssPhp\ScssPhp\Formatter\Crunched;
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use ScssPhp\ScssPhp\Formatter\Expanded;
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class SCSSCacher {
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/** @var ILogger */
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protected $logger;
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/** @var IAppData */
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protected $appData;
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/** @var IURLGenerator */
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protected $urlGenerator;
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/** @var IConfig */
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protected $config;
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/** @var \OC_Defaults */
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private $defaults;
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/** @var string */
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protected $serverRoot;
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/** @var ICache */
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protected $depsCache;
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/** @var null|string */
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private $injectedVariables;
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/** @var ICacheFactory */
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private $cacheFactory;
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/** @var IconsCacher */
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private $iconsCacher;
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/** @var ICache */
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private $isCachedCache;
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/** @var ITimeFactory */
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private $timeFactory;
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/** @var IMemcache */
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private $lockingCache;
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/** @var AppConfig */
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private $appConfig;
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/**
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* @param ILogger $logger
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* @param Factory $appDataFactory
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* @param IURLGenerator $urlGenerator
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* @param IConfig $config
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* @param \OC_Defaults $defaults
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* @param string $serverRoot
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* @param ICacheFactory $cacheFactory
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* @param IconsCacher $iconsCacher
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* @param ITimeFactory $timeFactory
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*/
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public function __construct(ILogger $logger,
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Factory $appDataFactory,
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IURLGenerator $urlGenerator,
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IConfig $config,
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\OC_Defaults $defaults,
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$serverRoot,
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ICacheFactory $cacheFactory,
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IconsCacher $iconsCacher,
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ITimeFactory $timeFactory,
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AppConfig $appConfig) {
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$this->logger = $logger;
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$this->appData = $appDataFactory->get('css');
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$this->urlGenerator = $urlGenerator;
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$this->config = $config;
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$this->defaults = $defaults;
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$this->serverRoot = $serverRoot;
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$this->cacheFactory = $cacheFactory;
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$this->depsCache = $cacheFactory->createDistributed('SCSS-deps-' . md5($this->urlGenerator->getBaseUrl()));
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$this->isCachedCache = $cacheFactory->createDistributed('SCSS-cached-' . md5($this->urlGenerator->getBaseUrl()));
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$lockingCache = $cacheFactory->createDistributed('SCSS-locks-' . md5($this->urlGenerator->getBaseUrl()));
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if (!($lockingCache instanceof IMemcache)) {
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$lockingCache = new NullCache();
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}
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$this->lockingCache = $lockingCache;
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$this->iconsCacher = $iconsCacher;
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$this->timeFactory = $timeFactory;
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$this->appConfig = $appConfig;
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}
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/**
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* Process the caching process if needed
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*
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* @param string $root Root path to the nextcloud installation
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* @param string $file
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* @param string $app The app name
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* @return boolean
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* @throws NotPermittedException
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*/
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public function process(string $root, string $file, string $app): bool {
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$path = explode('/', $root . '/' . $file);
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$fileNameSCSS = array_pop($path);
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$fileNameCSS = $this->prependVersionPrefix($this->prependBaseurlPrefix(str_replace('.scss', '.css', $fileNameSCSS)), $app);
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$path = implode('/', $path);
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$webDir = $this->getWebDir($path, $app, $this->serverRoot, \OC::$WEBROOT);
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$this->logger->debug('SCSSCacher::process ordinary check follows', ['app' => 'scss_cacher']);
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if (!$this->variablesChanged() && $this->isCached($fileNameCSS, $app)) {
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// Inject icons vars css if any
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return $this->injectCssVariablesIfAny();
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}
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try {
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$folder = $this->appData->getFolder($app);
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} catch (NotFoundException $e) {
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// creating css appdata folder
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$folder = $this->appData->newFolder($app);
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}
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$lockKey = $webDir . '/' . $fileNameSCSS;
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if (!$this->lockingCache->add($lockKey, 'locked!', 120)) {
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$this->logger->debug('SCSSCacher::process could not get lock for ' . $lockKey . ' and will wait 10 seconds for cached file to be available', ['app' => 'scss_cacher']);
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$retry = 0;
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sleep(1);
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while ($retry < 10) {
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$this->appConfig->clearCachedConfig();
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$this->logger->debug('SCSSCacher::process check in while loop follows', ['app' => 'scss_cacher']);
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if (!$this->variablesChanged() && $this->isCached($fileNameCSS, $app)) {
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// Inject icons vars css if any
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$this->logger->debug("SCSSCacher::process cached file for app '$app' and file '$fileNameCSS' is now available after $retry s. Moving on...", ['app' => 'scss_cacher']);
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return $this->injectCssVariablesIfAny();
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}
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sleep(1);
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$retry++;
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}
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$this->logger->debug('SCSSCacher::process Giving up scss caching for ' . $lockKey, ['app' => 'scss_cacher']);
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return false;
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}
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$this->logger->debug('SCSSCacher::process Lock acquired for ' . $lockKey, ['app' => 'scss_cacher']);
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try {
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$cached = $this->cache($path, $fileNameCSS, $fileNameSCSS, $folder, $webDir);
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} catch (\Exception $e) {
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$this->lockingCache->remove($lockKey);
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throw $e;
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}
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// Cleaning lock
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$this->lockingCache->remove($lockKey);
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$this->logger->debug('SCSSCacher::process Lock removed for ' . $lockKey, ['app' => 'scss_cacher']);
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// Inject icons vars css if any
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if ($this->iconsCacher->getCachedCSS() && $this->iconsCacher->getCachedCSS()->getSize() > 0) {
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$this->iconsCacher->injectCss();
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}
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return $cached;
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}
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/**
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* @param $appName
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* @param $fileName
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* @return ISimpleFile
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*/
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public function getCachedCSS(string $appName, string $fileName): ISimpleFile {
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$folder = $this->appData->getFolder($appName);
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$cachedFileName = $this->prependVersionPrefix($this->prependBaseurlPrefix($fileName), $appName);
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return $folder->getFile($cachedFileName);
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}
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/**
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* Check if the file is cached or not
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* @param string $fileNameCSS
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* @param string $app
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* @return boolean
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*/
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private function isCached(string $fileNameCSS, string $app) {
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$key = $this->config->getSystemValue('version') . '/' . $app . '/' . $fileNameCSS;
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// If the file mtime is more recent than our cached one,
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// let's consider the file is properly cached
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if ($cacheValue = $this->isCachedCache->get($key)) {
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if ($cacheValue > $this->timeFactory->getTime()) {
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return true;
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}
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}
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$this->logger->debug("SCSSCacher::isCached $fileNameCSS isCachedCache is expired or unset", ['app' => 'scss_cacher']);
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// Creating file cache if none for further checks
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try {
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$folder = $this->appData->getFolder($app);
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} catch (NotFoundException $e) {
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$this->logger->debug("SCSSCacher::isCached app data folder for $app could not be fetched", ['app' => 'scss_cacher']);
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return false;
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}
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// Checking if file size is coherent
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// and if one of the css dependency changed
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try {
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$cachedFile = $folder->getFile($fileNameCSS);
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if ($cachedFile->getSize() > 0) {
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$depFileName = $fileNameCSS . '.deps';
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$deps = $this->depsCache->get($folder->getName() . '-' . $depFileName);
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if ($deps === null) {
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$depFile = $folder->getFile($depFileName);
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$deps = $depFile->getContent();
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// Set to memcache for next run
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$this->depsCache->set($folder->getName() . '-' . $depFileName, $deps);
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}
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$deps = json_decode($deps, true);
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foreach ((array) $deps as $file => $mtime) {
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if (!file_exists($file) || filemtime($file) > $mtime) {
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$this->logger->debug("SCSSCacher::isCached $fileNameCSS is not considered as cached due to deps file $file", ['app' => 'scss_cacher']);
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return false;
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}
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}
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$this->logger->debug("SCSSCacher::isCached $fileNameCSS dependencies successfully cached for 5 minutes", ['app' => 'scss_cacher']);
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// It would probably make sense to adjust this timeout to something higher and see if that has some effect then
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$this->isCachedCache->set($key, $this->timeFactory->getTime() + 5 * 60);
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return true;
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}
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$this->logger->debug("SCSSCacher::isCached $fileNameCSS is not considered as cached cacheValue: $cacheValue", ['app' => 'scss_cacher']);
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return false;
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} catch (NotFoundException $e) {
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$this->logger->debug("SCSSCacher::isCached NotFoundException " . $e->getMessage(), ['app' => 'scss_cacher']);
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return false;
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}
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}
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/**
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* Check if the variables file has changed
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* @return bool
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*/
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private function variablesChanged(): bool {
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$injectedVariables = $this->getInjectedVariables();
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if ($this->config->getAppValue('core', 'theming.variables') !== md5($injectedVariables)) {
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$this->logger->debug('SCSSCacher::variablesChanged storedVariables: ' . json_encode($this->config->getAppValue('core', 'theming.variables')) . ' currentInjectedVariables: ' . json_encode($injectedVariables), ['app' => 'scss_cacher']);
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$this->config->setAppValue('core', 'theming.variables', md5($injectedVariables));
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$this->resetCache();
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return true;
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}
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return false;
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}
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/**
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* Cache the file with AppData
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*
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* @param string $path
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* @param string $fileNameCSS
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* @param string $fileNameSCSS
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* @param ISimpleFolder $folder
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* @param string $webDir
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* @return boolean
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* @throws NotPermittedException
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*/
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private function cache(string $path, string $fileNameCSS, string $fileNameSCSS, ISimpleFolder $folder, string $webDir) {
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$scss = new Compiler();
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$scss->setImportPaths([
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$path,
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$this->serverRoot . '/core/css/'
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]);
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// Continue after throw
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$scss->setIgnoreErrors(true);
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if ($this->config->getSystemValue('debug')) {
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// Debug mode
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$scss->setFormatter(Expanded::class);
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$scss->setLineNumberStyle(Compiler::LINE_COMMENTS);
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} else {
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// Compression
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$scss->setFormatter(Crunched::class);
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}
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try {
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$cachedfile = $folder->getFile($fileNameCSS);
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} catch (NotFoundException $e) {
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$cachedfile = $folder->newFile($fileNameCSS);
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}
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$depFileName = $fileNameCSS . '.deps';
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try {
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$depFile = $folder->getFile($depFileName);
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} catch (NotFoundException $e) {
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$depFile = $folder->newFile($depFileName);
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}
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// Compile
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try {
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$compiledScss = $scss->compile(
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'$webroot: \'' . $this->getRoutePrefix() . '\';' .
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$this->getInjectedVariables() .
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'@import "variables.scss";' .
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'@import "functions.scss";' .
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'@import "' . $fileNameSCSS . '";');
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} catch (ParserException $e) {
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$this->logger->logException($e, ['app' => 'scss_cacher']);
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return false;
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}
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// Parse Icons and create related css variables
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$compiledScss = $this->iconsCacher->setIconsCss($compiledScss);
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// Gzip file
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try {
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$gzipFile = $folder->getFile($fileNameCSS . '.gzip'); # Safari doesn't like .gz
|
||
|
|
} catch (NotFoundException $e) {
|
||
|
|
$gzipFile = $folder->newFile($fileNameCSS . '.gzip'); # Safari doesn't like .gz
|
||
|
|
}
|
||
|
|
|
||
|
|
try {
|
||
|
|
$data = $this->rebaseUrls($compiledScss, $webDir);
|
||
|
|
$cachedfile->putContent($data);
|
||
|
|
$deps = json_encode($scss->getParsedFiles());
|
||
|
|
$depFile->putContent($deps);
|
||
|
|
$this->depsCache->set($folder->getName() . '-' . $depFileName, $deps);
|
||
|
|
$gzipFile->putContent(gzencode($data, 9));
|
||
|
|
$this->logger->debug('SCSSCacher::cache ' . $webDir . '/' . $fileNameSCSS . ' compiled and successfully cached', ['app' => 'scss_cacher']);
|
||
|
|
|
||
|
|
return true;
|
||
|
|
} catch (NotPermittedException $e) {
|
||
|
|
$this->logger->error('SCSSCacher::cache unable to cache: ' . $fileNameSCSS, ['app' => 'scss_cacher']);
|
||
|
|
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Reset scss cache by deleting all generated css files
|
||
|
|
* We need to regenerate all files when variables change
|
||
|
|
*/
|
||
|
|
public function resetCache() {
|
||
|
|
$this->logger->debug('SCSSCacher::resetCache', ['app' => 'scss_cacher']);
|
||
|
|
if (!$this->lockingCache->add('resetCache', 'locked!', 120)) {
|
||
|
|
$this->logger->debug('SCSSCacher::resetCache Locked', ['app' => 'scss_cacher']);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
$this->logger->debug('SCSSCacher::resetCache Lock acquired', ['app' => 'scss_cacher']);
|
||
|
|
$this->injectedVariables = null;
|
||
|
|
|
||
|
|
// do not clear locks
|
||
|
|
$this->cacheFactory->createDistributed('SCSS-deps-')->clear();
|
||
|
|
$this->cacheFactory->createDistributed('SCSS-cached-')->clear();
|
||
|
|
|
||
|
|
$appDirectory = $this->appData->getDirectoryListing();
|
||
|
|
foreach ($appDirectory as $folder) {
|
||
|
|
foreach ($folder->getDirectoryListing() as $file) {
|
||
|
|
try {
|
||
|
|
$file->delete();
|
||
|
|
} catch (NotPermittedException $e) {
|
||
|
|
$this->logger->logException($e, ['message' => 'SCSSCacher::resetCache unable to delete file: ' . $file->getName(), 'app' => 'scss_cacher']);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$this->logger->debug('SCSSCacher::resetCache css cache cleared!', ['app' => 'scss_cacher']);
|
||
|
|
$this->lockingCache->remove('resetCache');
|
||
|
|
$this->logger->debug('SCSSCacher::resetCache Locking removed', ['app' => 'scss_cacher']);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @return string SCSS code for variables from OC_Defaults
|
||
|
|
*/
|
||
|
|
private function getInjectedVariables(): string {
|
||
|
|
if ($this->injectedVariables !== null) {
|
||
|
|
return $this->injectedVariables;
|
||
|
|
}
|
||
|
|
$variables = '';
|
||
|
|
foreach ($this->defaults->getScssVariables() as $key => $value) {
|
||
|
|
$variables .= '$' . $key . ': ' . $value . ' !default;';
|
||
|
|
}
|
||
|
|
|
||
|
|
// check for valid variables / otherwise fall back to defaults
|
||
|
|
try {
|
||
|
|
$scss = new Compiler();
|
||
|
|
$scss->compile($variables);
|
||
|
|
$this->injectedVariables = $variables;
|
||
|
|
} catch (ParserException $e) {
|
||
|
|
$this->logger->logException($e, ['app' => 'scss_cacher']);
|
||
|
|
}
|
||
|
|
|
||
|
|
return $variables;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Add the correct uri prefix to make uri valid again
|
||
|
|
* @param string $css
|
||
|
|
* @param string $webDir
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
private function rebaseUrls(string $css, string $webDir): string {
|
||
|
|
$re = '/url\([\'"]([^\/][\.\w?=\/-]*)[\'"]\)/x';
|
||
|
|
$subst = 'url(\'' . $webDir . '/$1\')';
|
||
|
|
|
||
|
|
return preg_replace($re, $subst, $css);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Return the cached css file uri
|
||
|
|
* @param string $appName the app name
|
||
|
|
* @param string $fileName
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
public function getCachedSCSS(string $appName, string $fileName): string {
|
||
|
|
$tmpfileLoc = explode('/', $fileName);
|
||
|
|
$fileName = array_pop($tmpfileLoc);
|
||
|
|
$fileName = $this->prependVersionPrefix($this->prependBaseurlPrefix(str_replace('.scss', '.css', $fileName)), $appName);
|
||
|
|
|
||
|
|
return substr($this->urlGenerator->linkToRoute('core.Css.getCss', [
|
||
|
|
'fileName' => $fileName,
|
||
|
|
'appName' => $appName,
|
||
|
|
'v' => $this->config->getAppValue('core', 'theming.variables', '0')
|
||
|
|
]), \strlen(\OC::$WEBROOT) + 1);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Prepend hashed base url to the css file
|
||
|
|
* @param string $cssFile
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
private function prependBaseurlPrefix(string $cssFile): string {
|
||
|
|
return substr(md5($this->urlGenerator->getBaseUrl() . $this->getRoutePrefix()), 0, 4) . '-' . $cssFile;
|
||
|
|
}
|
||
|
|
|
||
|
|
private function getRoutePrefix() {
|
||
|
|
$frontControllerActive = ($this->config->getSystemValue('htaccess.IgnoreFrontController', false) === true || getenv('front_controller_active') === 'true');
|
||
|
|
$prefix = \OC::$WEBROOT . '/index.php';
|
||
|
|
if ($frontControllerActive) {
|
||
|
|
$prefix = \OC::$WEBROOT;
|
||
|
|
}
|
||
|
|
return $prefix;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Prepend hashed app version hash
|
||
|
|
* @param string $cssFile
|
||
|
|
* @param string $appId
|
||
|
|
* @return string
|
||
|
|
*/
|
||
|
|
private function prependVersionPrefix(string $cssFile, string $appId): string {
|
||
|
|
$appVersion = \OC_App::getAppVersion($appId);
|
||
|
|
if ($appVersion !== '0') {
|
||
|
|
return substr(md5($appVersion), 0, 4) . '-' . $cssFile;
|
||
|
|
}
|
||
|
|
$coreVersion = \OC_Util::getVersionString();
|
||
|
|
|
||
|
|
return substr(md5($coreVersion), 0, 4) . '-' . $cssFile;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get WebDir root
|
||
|
|
* @param string $path the css file path
|
||
|
|
* @param string $appName the app name
|
||
|
|
* @param string $serverRoot the server root path
|
||
|
|
* @param string $webRoot the nextcloud installation root path
|
||
|
|
* @return string the webDir
|
||
|
|
*/
|
||
|
|
private function getWebDir(string $path, string $appName, string $serverRoot, string $webRoot): string {
|
||
|
|
// Detect if path is within server root AND if path is within an app path
|
||
|
|
if (strpos($path, $serverRoot) === false && $appWebPath = \OC_App::getAppWebPath($appName)) {
|
||
|
|
// Get the file path within the app directory
|
||
|
|
$appDirectoryPath = explode($appName, $path)[1];
|
||
|
|
// Remove the webroot
|
||
|
|
|
||
|
|
return str_replace($webRoot, '', $appWebPath . $appDirectoryPath);
|
||
|
|
}
|
||
|
|
|
||
|
|
return $webRoot . substr($path, strlen($serverRoot));
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Add the icons css cache in the header if needed
|
||
|
|
*
|
||
|
|
* @return boolean true
|
||
|
|
*/
|
||
|
|
private function injectCssVariablesIfAny() {
|
||
|
|
// Inject icons vars css if any
|
||
|
|
if ($this->iconsCacher->getCachedCSS() && $this->iconsCacher->getCachedCSS()->getSize() > 0) {
|
||
|
|
$this->iconsCacher->injectCss();
|
||
|
|
}
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|