Moved cache drivers outside core to extensions (plugins)

plugins/cache-redis/Predis/Protocol/Text/Handler/StreamableMultiBulkResponse.php

@@ -0,0 +1,47 @@
+<?php
+
+/*
+ * This file is part of the Predis package.
+ *
+ * (c) Daniele Alessandri <suppakilla@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Predis\Protocol\Text\Handler;
+
+use Predis\CommunicationException;
+use Predis\Connection\CompositeConnectionInterface;
+use Predis\Protocol\ProtocolException;
+use Predis\Response\Iterator\MultiBulk as MultiBulkIterator;
+
+/**
+ * Handler for the multibulk response type in the standard Redis wire protocol.
+ * It returns multibulk responses as iterators that can stream bulk elements.
+ *
+ * Streamable multibulk responses are not globally supported by the abstractions
+ * built-in into Predis, such as transactions or pipelines. Use them with care!
+ *
+ * @link http://redis.io/topics/protocol
+ *
+ * @author Daniele Alessandri <suppakilla@gmail.com>
+ */
+class StreamableMultiBulkResponse implements ResponseHandlerInterface
+{
+    /**
+     * {@inheritdoc}
+     */
+    public function handle(CompositeConnectionInterface $connection, $payload)
+    {
+        $length = (int) $payload;
+
+        if ("$length" != $payload) {
+            CommunicationException::handle(new ProtocolException(
+                $connection, "Cannot parse '$payload' as a valid length for a multi-bulk response."
+            ));
+        }
+
+        return new MultiBulkIterator($connection, $length);
+    }
+}