Moved cache drivers outside core to extensions (plugins)

plugins/cache-redis/Predis/Response/Iterator/MultiBulk.php

@@ -0,0 +1,77 @@
+<?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\Response\Iterator;
+
+use Predis\Connection\NodeConnectionInterface;
+
+/**
+ * Streamable multibulk response.
+ *
+ * @author Daniele Alessandri <suppakilla@gmail.com>
+ */
+class MultiBulk extends MultiBulkIterator
+{
+    private $connection;
+
+    /**
+     * @param NodeConnectionInterface $connection Connection to Redis.
+     * @param int                     $size       Number of elements of the multibulk response.
+     */
+    public function __construct(NodeConnectionInterface $connection, $size)
+    {
+        $this->connection = $connection;
+        $this->size = $size;
+        $this->position = 0;
+        $this->current = $size > 0 ? $this->getValue() : null;
+    }
+
+    /**
+     * Handles the synchronization of the client with the Redis protocol when
+     * the garbage collector kicks in (e.g. when the iterator goes out of the
+     * scope of a foreach or it is unset).
+     */
+    public function __destruct()
+    {
+        $this->drop(true);
+    }
+
+    /**
+     * Drop queued elements that have not been read from the connection either
+     * by consuming the rest of the multibulk response or quickly by closing the
+     * underlying connection.
+     *
+     * @param bool $disconnect Consume the iterator or drop the connection.
+     */
+    public function drop($disconnect = false)
+    {
+        if ($disconnect) {
+            if ($this->valid()) {
+                $this->position = $this->size;
+                $this->connection->disconnect();
+            }
+        } else {
+            while ($this->valid()) {
+                $this->next();
+            }
+        }
+    }
+
+    /**
+     * Reads the next item of the multibulk response from the connection.
+     *
+     * @return mixed
+     */
+    protected function getValue()
+    {
+        return $this->connection->read();
+    }
+}