TYPO3 v15 dev-main snapshot ()

src/Plugin/Util/ExtensionKeyResolver.php

@@ -0,0 +1,49 @@
+<?php
+declare(strict_types=1);
+
+/*
+ * This file is part of the TYPO3 project.
+ *
+ * It is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, either version 2
+ * of the License, or any later version.
+ *
+ * For the full copyright and license information, please read the
+ * LICENSE.txt file that was distributed with this source code.
+ *
+ * The TYPO3 project - inspiring people to share!
+ */
+
+namespace TYPO3\CMS\Composer\Plugin\Util;
+
+use Composer\Package\PackageInterface;
+
+/**
+ * Resolves an extension key from a package
+ */
+class ExtensionKeyResolver
+{
+    /**
+     * Resolves the extension key from extra section
+     *
+     * @param PackageInterface $package
+     * @throws \RuntimeException
+     * @return string
+     */
+    public static function resolve(PackageInterface $package): string
+    {
+        $extra = $package->getExtra();
+        if (empty($extra['typo3/cms']['extension-key']) && str_starts_with($package->getType(), 'typo3-cms-')) {
+            // The only reason this is enforced, is to ease the transition of extensions of type "typo3-cms-*"
+            // Since the logic is removed how to derive the extension key from package name, we must enforce
+            // the extension key to be set to avoid ambiguity of the extension key between previous installers versions and this one
+            // e.g. package "foo/bar" previously was resolved to extension key "bar" and would now be resolved to "foo/bar"
+            // The only way to avoid this, is to enforce the deprecation and require an extension key to be set.
+            // This is important, as dependents of such extensions can reference paths using the key and this key must not
+            // differ from different versions of the composer installers package.
+            throw new \RuntimeException(sprintf('Extension with package name "%s" does not define an extension key.', $package->getName()), 1501195043);
+        }
+
+        return $extra['typo3/cms']['extension-key'] ?? $package->getName();
+    }
+}