diff -r 877f952ae2bd -r 6b6c2214f778 web/lib/Zend/Service/Twitter/Response.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/Zend/Service/Twitter/Response.php	Thu Mar 21 19:52:38 2013 +0100
@@ -0,0 +1,179 @@
+<?php
+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@zend.com so we can send you a copy immediately.
+ *
+ * @category   Zend
+ * @package    Zend_Service
+ * @subpackage Twitter
+ * @copyright  Copyright (c) 2005-2013 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ * @version    $Id$
+ */
+
+/**
+ * @see Zend_Http_Response
+ */
+require_once 'Zend/Http/Response.php';
+
+/**
+ * @see Zend_Json
+ */
+require_once 'Zend/Json.php';
+
+/**
+ * Representation of a response from Twitter.
+ *
+ * Provides:
+ *
+ * - method for testing if we have a successful call
+ * - method for retrieving errors, if any
+ * - method for retrieving the raw JSON
+ * - method for retrieving the decoded response
+ * - proxying to elements of the decoded response via property overloading
+ *
+ * @category   Zend
+ * @package    Zend_Service
+ * @subpackage Twitter
+ * @copyright  Copyright (c) 2005-2013 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+class Zend_Service_Twitter_Response
+{
+    /**
+     * @var Zend_Http_Response
+     */
+    protected $httpResponse;
+
+    /**
+     * @var array|stdClass
+     */
+    protected $jsonBody;
+
+    /**
+     * @var string
+     */
+    protected $rawBody;
+
+    /**
+     * Constructor
+     *
+     * Assigns the HTTP response to a property, as well as the body
+     * representation. It then attempts to decode the body as JSON.
+     *
+     * @param  Zend_Http_Response $httpResponse
+     * @throws Zend_Service_Twitter_Exception if unable to decode JSON response
+     */
+    public function __construct(Zend_Http_Response $httpResponse)
+    {
+        $this->httpResponse = $httpResponse;
+        $this->rawBody      = $httpResponse->getBody();
+        try {
+            $jsonBody = Zend_Json::decode($this->rawBody, Zend_Json::TYPE_OBJECT);
+            $this->jsonBody = $jsonBody;
+        } catch (Zend_Json_Exception $e) {
+            require_once 'Zend/Service/Twitter/Exception.php';
+            throw new Zend_Service_Twitter_Exception(sprintf(
+                'Unable to decode response from twitter: %s',
+                $e->getMessage()
+            ), 0, $e);
+        }
+    }
+
+    /**
+     * Property overloading to JSON elements
+     *
+     * If a named property exists within the JSON response returned,
+     * proxies to it. Otherwise, returns null.
+     *
+     * @param  string $name
+     * @return mixed
+     */
+    public function __get($name)
+    {
+        if (null === $this->jsonBody) {
+            return null;
+        }
+        if (!isset($this->jsonBody->{$name})) {
+            return null;
+        }
+        return $this->jsonBody->{$name};
+    }
+
+    /**
+     * Was the request successful?
+     *
+     * @return bool
+     */
+    public function isSuccess()
+    {
+        return $this->httpResponse->isSuccessful();
+    }
+
+    /**
+     * Did an error occur in the request?
+     *
+     * @return bool
+     */
+    public function isError()
+    {
+        return !$this->httpResponse->isSuccessful();
+    }
+
+    /**
+     * Retrieve the errors.
+     *
+     * Twitter _should_ return a standard error object, which contains an
+     * "errors" property pointing to an array of errors. This method will
+     * return that array if present, and raise an exception if not detected.
+     *
+     * If the response was successful, an empty array is returned.
+     *
+     * @return array
+     * @throws Exception\DomainException if unable to detect structure of error response
+     */
+    public function getErrors()
+    {
+        if (!$this->isError()) {
+            return array();
+        }
+        if (null === $this->jsonBody
+            || !isset($this->jsonBody->errors)
+        ) {
+            require_once 'Zend/Service/Twitter/Exception.php';
+            throw new Zend_Service_Twitter_Exception(
+                'Either no JSON response received, or JSON error response is malformed; cannot return errors'
+            );
+        }
+        return $this->jsonBody->errors;
+    }
+
+    /**
+     * Retrieve the raw response body
+     *
+     * @return string
+     */
+    public function getRawResponse()
+    {
+        return $this->rawBody;
+    }
+
+    /**
+     * Retun the decoded response body
+     *
+     * @return array|stdClass
+     */
+    public function toValue()
+    {
+        return $this->jsonBody;
+    }
+}