Initial commit - Typo3 11.5.41

typo3conf/ext/news/Classes/Utility/ClassLoader.php

@@ -0,0 +1,153 @@
+<?php
+
+namespace GeorgRinger\News\Utility;
+
+use TYPO3\CMS\Core\Cache\CacheManager;
+use TYPO3\CMS\Core\Cache\Frontend\PhpFrontend;
+use TYPO3\CMS\Core\Information\Typo3Version;
+use TYPO3\CMS\Core\SingletonInterface;
+use TYPO3\CMS\Core\Utility\GeneralUtility;
+
+/**
+ * This file is part of the "news" Extension for TYPO3 CMS.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ */
+
+/**
+ * Class ClassLoader
+ */
+class ClassLoader implements SingletonInterface
+{
+
+    /**
+     * @var PhpFrontend
+     */
+    protected $classCache;
+
+    /** @var ClassCacheManager */
+    protected $classCacheManager;
+
+    /** @var bool */
+    protected $isValidInstance = false;
+
+    /**
+     * ClassLoader constructor.
+     *
+     * @param PhpFrontend $classCache
+     */
+    public function __construct(PhpFrontend $classCache = null, ClassCacheManager $classCacheManager = null)
+    {
+        $versionInformation = GeneralUtility::makeInstance(Typo3Version::class);
+        if ($versionInformation->getMajorVersion() === 10) {
+            // Use DI
+            // something might fail, e.g loading checks in Install Tool
+            if ($classCacheManager !== null) {
+                $this->classCacheManager = $classCacheManager;
+                $this->isValidInstance = true;
+            }
+        } else {
+            $this->classCacheManager = GeneralUtility::makeInstance(ClassCacheManager::class);
+            $this->isValidInstance = true;
+        }
+
+        if ($this->isValidInstance) {
+            if ($classCache === null) {
+                $this->classCache = GeneralUtility::makeInstance(CacheManager::class)->getCache('news');
+            } else {
+                $this->classCache = $classCache;
+            }
+        }
+    }
+
+    /**
+     * Register instance of this class as spl autoloader
+     *
+     * @return void
+     */
+    public static function registerAutoloader(): void
+    {
+        spl_autoload_register([GeneralUtility::makeInstance(self::class), 'loadClass'], true, true);
+    }
+
+    /**
+     * Loads php files containing classes or interfaces part of the
+     * classes directory of an extension.
+     *
+     * @param string $className Name of the class/interface to load
+     * @return bool
+     */
+    public function loadClass($className): bool
+    {
+        if (!$this->isValidInstance) {
+            return false;
+        }
+
+        $className = ltrim($className, '\\');
+
+        if (!$this->isValidClassName($className)) {
+            return false;
+        }
+        $cacheEntryIdentifier = 'tx_news_' . strtolower(str_replace('/', '_', $this->changeClassName($className)));
+
+        if (!$this->classCache->has($cacheEntryIdentifier)) {
+            $this->classCacheManager->reBuild();
+        }
+
+        $this->classCache->requireOnce($cacheEntryIdentifier);
+        return true;
+    }
+
+    /**
+     * Get extension key from namespaced classname
+     *
+     * @param string $className
+     *
+     * @return null|string
+     */
+    protected function getExtensionKey($className): ?string
+    {
+        $extensionKey = null;
+
+        if (strpos($className, '\\') !== false) {
+            $namespaceParts = GeneralUtility::trimExplode(
+                '\\',
+                $className,
+                0,
+                (substr($className, 0, 9) === 'TYPO3\\CMS' ? 4 : 3)
+            );
+            array_pop($namespaceParts);
+            $extensionKey = GeneralUtility::camelCaseToLowerCaseUnderscored(array_pop($namespaceParts));
+        }
+
+        return $extensionKey;
+    }
+
+    /**
+     * Find out if a class name is valid
+     *
+     * @param string $className
+     * @return bool
+     */
+    protected function isValidClassName($className): bool
+    {
+        if ($this->isFirstPartOfStr($className, 'GeorgRinger\\News\\Domain\\') || $this->isFirstPartOfStr($className, 'GeorgRinger\\News\\Controller\\')) {
+            $modifiedClassName = $this->changeClassName($className);
+            if (isset($GLOBALS['TYPO3_CONF_VARS']['EXT']['news']['classes'][$modifiedClassName])) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    protected function isFirstPartOfStr(string $str, string $partStr): bool
+    {
+        return $partStr !== '' && strpos($str, $partStr) === 0;
+    }
+
+    protected function changeClassName(string $className): string
+    {
+        return str_replace('\\', '/', str_replace('GeorgRinger\\News\\', '', $className));
+    }
+}