Add Config view helper.

module/VuFind/src/VuFind/View/Helper/Root/Config.php

+<?php
+/**
+ * Config view helper
+ *
+ * PHP version 5
+ *
+ * Copyright (C) Villanova University 2018.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2,
+ * as published by the Free Software Foundation.
+ *
+ * This program 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category VuFind
+ * @package  View_Helpers
+ * @author   Demian Katz <demian.katz@villanova.edu>
+ * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
+ * @link     https://vufind.org/wiki/development Wiki
+ */
+namespace VuFind\View\Helper\Root;
+
+use VuFind\Config\PluginManager;
+
+/**
+ * Config view helper
+ *
+ * @category VuFind
+ * @package  View_Helpers
+ * @author   Demian Katz <demian.katz@villanova.edu>
+ * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
+ * @link     https://vufind.org/wiki/development Wiki
+ */
+class Config extends \Zend\View\Helper\AbstractHelper
+{
+    /**
+     * Configuration plugin manager
+     *
+     * @var PluginManager
+     */
+    protected $configLoader;
+
+    /**
+     * Constructor
+     *
+     * @param Helper $helper Capabilities helper
+     */
+    public function __construct(PluginManager $configLoader)
+    {
+        $this->configLoader = $configLoader;
+    }
+
+    /**
+     * Get the specified configuration.
+     *
+     * @param string $config Name of configuration
+     *
+     * @return \Zend\Config\Config
+     */
+    public function get($config)
+    {
+        return $this->configLoader->get($config);
+    }
+}

module/VuFind/src/VuFind/View/Helper/Root/ConfigFactory.php

+<?php
+/**
+ * Config helper factory.
+ *
+ * PHP version 5
+ *
+ * Copyright (C) Villanova University 2018.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2,
+ * as published by the Free Software Foundation.
+ *
+ * This program 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.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category VuFind
+ * @package  View_Helpers
+ * @author   Demian Katz <demian.katz@villanova.edu>
+ * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
+ * @link     https://vufind.org/wiki/development Wiki
+ */
+namespace VuFind\View\Helper\Root;
+
+use Interop\Container\ContainerInterface;
+use Zend\ServiceManager\Factory\FactoryInterface;
+
+/**
+ * Config helper factory.
+ *
+ * @category VuFind
+ * @package  View_Helpers
+ * @author   Demian Katz <demian.katz@villanova.edu>
+ * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
+ * @link     https://vufind.org/wiki/development Wiki
+ */
+class ConfigFactory implements FactoryInterface
+{
+    /**
+     * Create an object
+     *
+     * @param ContainerInterface $container     Service manager
+     * @param string             $requestedName Service being created
+     * @param null|array         $options       Extra options (optional)
+     *
+     * @return object
+     *
+     * @throws ServiceNotFoundException if unable to resolve the service.
+     * @throws ServiceNotCreatedException if an exception is raised when
+     * creating a service.
+     * @throws ContainerException if any other error occurs
+     */
+    public function __invoke(ContainerInterface $container, $requestedName,
+        array $options = null
+    ) {
+        if (!empty($options)) {
+            throw new \Exception('Unexpected options sent to factory.');
+        }
+        return new $requestedName($container->get('VuFind\Config\PluginManager'));
+    }
+}

themes/root/theme.config.php

@@ -12,6 +12,7 @@ return [
             'VuFind\View\Helper\Root\Browse' => 'Zend\ServiceManager\Factory\InvokableFactory',
             'VuFind\View\Helper\Root\Cart' => 'VuFind\View\Helper\Root\Factory::getCart',
             'VuFind\View\Helper\Root\Citation' => 'VuFind\View\Helper\Root\Factory::getCitation',
+            'VuFind\View\Helper\Root\Config' => 'VuFind\View\Helper\Root\ConfigFactory',
             'VuFind\View\Helper\Root\Context' => 'Zend\ServiceManager\Factory\InvokableFactory',
             'VuFind\View\Helper\Root\CurrentPath' => 'Zend\ServiceManager\Factory\InvokableFactory',
             'VuFind\View\Helper\Root\DateTime' => 'VuFind\View\Helper\Root\Factory::getDateTime',
@@ -68,6 +69,7 @@ return [
             'browse' => 'VuFind\View\Helper\Root\Browse',
             'cart' => 'VuFind\View\Helper\Root\Cart',
             'citation' => 'VuFind\View\Helper\Root\Citation',
+            'config' => 'VuFind\View\Helper\Root\Config',
             'context' => 'VuFind\View\Helper\Root\Context',
             'currentPath' => 'VuFind\View\Helper\Root\CurrentPath',
             'dateTime' => 'VuFind\View\Helper\Root\DateTime',