added an abstract factory for configs

library/Zend/Config/AbstractConfigFactory.php

@@ -0,0 +1,60 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2013 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Config;
+
+use Zend\ServiceManager;
+
+/**
+ * Class AbstractConfigFactory
+ */
+class AbstractConfigFactory implements ServiceManager\AbstractFactoryInterface
+{
+    /**
+     * @var string
+     */
+    protected $pattern = '#^(.*)\\\\Config$#i';
+
+    /**
+     * Determine if we can create a service with name
+     *
+     * @param ServiceManager\ServiceLocatorInterface $serviceLocator
+     * @param string $name
+     * @param string $requestedName
+     * @return bool
+     */
+    public function canCreateServiceWithName(ServiceManager\ServiceLocatorInterface $serviceLocator, $name, $requestedName)
+    {
+        if (!preg_match($this->pattern, $requestedName, $matches)) {
+            return false;
+        }
+
+        $config = $serviceLocator->get('Config');
+        if (!isset($config[$matches[1]])) {
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * Create service with name
+     *
+     * @param ServiceManager\ServiceLocatorInterface $serviceLocator
+     * @param string $name
+     * @param string $requestedName
+     * @return mixed
+     */
+    public function createServiceWithName(ServiceManager\ServiceLocatorInterface $serviceLocator, $name, $requestedName)
+    {
+        preg_match($this->pattern, $requestedName, $matches);
+        $config = $serviceLocator->get('Config');
+        return new Config($config[$matches[1]]);
+    }
+}