chore: copy ep_products and ep_theme from EP/website@9593cc8

Copied unchanged from public/typo3conf/ext/ of EP/website at
9593cc8631354f8a363d6609de8b7433f669a9a0 (Git-tracked files only).
History stays in the old repository. Only composer.json files are
added so the extensions install as path packages.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

packages/ep_theme/Classes/ViewHelpers/ArgumentPrefixViewHelper.php

@@ -0,0 +1,70 @@
+<?php
+
+namespace EP\EpTheme\ViewHelpers;
+
+/***************************************************************
+ *
+ *  Copyright notice
+ *
+ *  (c) 2018 Björn Fromme <[email protected]>, dreipunktnull
+ *
+ *  All rights reserved
+ *
+ *  This script is part of the TYPO3 project. The TYPO3 project is
+ *  free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  The GNU General Public License can be found at
+ *  http://www.gnu.org/copyleft/gpl.html.
+ *
+ *  This script is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  This copyright notice MUST APPEAR in all copies of the script!
+ ***************************************************************/
+
+use TYPO3Fluid\Fluid\Core\Rendering\RenderingContextInterface;
+use TYPO3Fluid\Fluid\Core\ViewHelper\AbstractViewHelper;
+use TYPO3Fluid\Fluid\Core\ViewHelper\Traits\CompileWithRenderStatic;
+
+class ArgumentPrefixViewHelper extends AbstractViewHelper
+{
+    use CompileWithRenderStatic;
+
+    public function initializeArguments()
+    {
+        parent::initializeArguments();
+
+        $this->registerArgument('pluginName', 'string', 'Plugin name');
+        $this->registerArgument('extensionName', 'string', 'Extension name');
+    }
+
+    /**
+     * @param array $arguments
+     * @param \Closure $renderChildrenClosure
+     * @param RenderingContextInterface $renderingContext
+     * @return mixed
+     */
+    public static function renderStatic(
+        array $arguments,
+        \Closure $renderChildrenClosure,
+        RenderingContextInterface $renderingContext
+    )
+    {
+        $request = $renderingContext->getControllerContext()->getRequest();
+        $pluginName = $arguments['pluginName'];
+        if ($pluginName === null) {
+            $pluginName = $request->getPluginName();
+        }
+        $extensionName = $arguments['extensionName'];
+        if ($extensionName === null) {
+            $extensionName = $request->getControllerExtensionName();
+        }
+        return strtolower(implode('_', ['tx', $extensionName, $pluginName]));
+    }
+
+}