add zend feed 3rdparty component

3rdparty/.gitignore

@@ -0,0 +1,10 @@
+nbproject
+._*
+.~lock.*
+.buildpath
+.DS_Store
+.idea
+.project
+.settings
+composer.lock
+vendor/bin

3rdparty/.gitmodules

@@ -0,0 +1,3 @@
+[submodule "vendor/ZF2"]
+	path = vendor/ZF2
+	url = https://github.com/zendframework/zf2.git

3rdparty/ZendFeed/.gitignore

@@ -0,0 +1,10 @@
+nbproject
+._*
+.~lock.*
+.buildpath
+.DS_Store
+.idea
+.project
+.settings
+composer.lock
+vendor/bin

3rdparty/ZendFeed/.gitmodules

@@ -0,0 +1,3 @@
+[submodule "vendor/ZF2"]
+	path = vendor/ZF2
+	url = https://github.com/zendframework/zf2.git

3rdparty/ZendFeed/CONTRIBUTING.md

@@ -0,0 +1,3 @@
+# CONTRIBUTING
+
+Please don't open pull requests against this repository, please use https://github.com/zendframework/zf2.

3rdparty/ZendFeed/Exception/BadMethodCallException.php

@@ -0,0 +1,15 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Exception;
+
+class BadMethodCallException
+    extends \BadMethodCallException
+    implements ExceptionInterface
+{}

3rdparty/ZendFeed/Exception/ExceptionInterface.php

@@ -0,0 +1,13 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Exception;
+
+interface ExceptionInterface
+{}

3rdparty/ZendFeed/Exception/InvalidArgumentException.php

@@ -0,0 +1,15 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Exception;
+
+class InvalidArgumentException
+    extends \InvalidArgumentException
+    implements ExceptionInterface
+{}

3rdparty/ZendFeed/Exception/RuntimeException.php

@@ -0,0 +1,15 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Exception;
+
+class RuntimeException
+    extends \RuntimeException
+    implements ExceptionInterface
+{}

3rdparty/ZendFeed/PubSubHubbub/AbstractCallback.php

@@ -0,0 +1,291 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\PubSubHubbub;
+
+use Traversable;
+use Zend\Http\PhpEnvironment\Response as PhpResponse;
+use Zend\Stdlib\ArrayUtils;
+
+abstract class AbstractCallback implements CallbackInterface
+{
+    /**
+     * An instance of Zend\Feed\Pubsubhubbub\Model\SubscriptionPersistenceInterface
+     * used to background save any verification tokens associated with a subscription
+     * or other.
+     *
+     * @var Model\SubscriptionPersistenceInterface
+     */
+    protected $storage = null;
+
+    /**
+     * An instance of a class handling Http Responses. This is implemented in
+     * Zend\Feed\Pubsubhubbub\HttpResponse which shares an unenforced interface with
+     * (i.e. not inherited from) Zend\Controller\Response\Http.
+     *
+     * @var HttpResponse|PhpResponse
+     */
+    protected $httpResponse = null;
+
+    /**
+     * The number of Subscribers for which any updates are on behalf of.
+     *
+     * @var int
+     */
+    protected $subscriberCount = 1;
+
+    /**
+     * Constructor; accepts an array or Traversable object to preset
+     * options for the Subscriber without calling all supported setter
+     * methods in turn.
+     *
+     * @param  array|Traversable $options Options array or Traversable object
+     */
+    public function __construct($options = null)
+    {
+        if ($options !== null) {
+            $this->setOptions($options);
+        }
+    }
+
+    /**
+     * Process any injected configuration options
+     *
+     * @param  array|Traversable $options Options array or Traversable object
+     * @return AbstractCallback
+     * @throws Exception\InvalidArgumentException
+     */
+    public function setOptions($options)
+    {
+        if ($options instanceof Traversable) {
+            $options = ArrayUtils::iteratorToArray($options);
+        }
+
+        if (!is_array($options)) {
+            throw new Exception\InvalidArgumentException('Array or Traversable object'
+            . 'expected, got ' . gettype($options));
+        }
+
+        if (is_array($options)) {
+            $this->setOptions($options);
+        }
+
+        if (array_key_exists('storage', $options)) {
+            $this->setStorage($options['storage']);
+        }
+        return $this;
+    }
+
+    /**
+     * Send the response, including all headers.
+     * If you wish to handle this via Zend\Http, use the getter methods
+     * to retrieve any data needed to be set on your HTTP Response object, or
+     * simply give this object the HTTP Response instance to work with for you!
+     *
+     * @return void
+     */
+    public function sendResponse()
+    {
+        $this->getHttpResponse()->send();
+    }
+
+    /**
+     * Sets an instance of Zend\Feed\Pubsubhubbub\Model\SubscriptionPersistence used
+     * to background save any verification tokens associated with a subscription
+     * or other.
+     *
+     * @param  Model\SubscriptionPersistenceInterface $storage
+     * @return AbstractCallback
+     */
+    public function setStorage(Model\SubscriptionPersistenceInterface $storage)
+    {
+        $this->storage = $storage;
+        return $this;
+    }
+
+    /**
+     * Gets an instance of Zend\Feed\Pubsubhubbub\Model\SubscriptionPersistence used
+     * to background save any verification tokens associated with a subscription
+     * or other.
+     *
+     * @return Model\SubscriptionPersistenceInterface
+     * @throws Exception\RuntimeException
+     */
+    public function getStorage()
+    {
+        if ($this->storage === null) {
+            throw new Exception\RuntimeException('No storage object has been'
+                . ' set that subclasses Zend\Feed\Pubsubhubbub\Model\SubscriptionPersistence');
+        }
+        return $this->storage;
+    }
+
+    /**
+     * An instance of a class handling Http Responses. This is implemented in
+     * Zend\Feed\Pubsubhubbub\HttpResponse which shares an unenforced interface with
+     * (i.e. not inherited from) Zend\Controller\Response\Http.
+     *
+     * @param  HttpResponse|PhpResponse $httpResponse
+     * @return AbstractCallback
+     * @throws Exception\InvalidArgumentException
+     */
+    public function setHttpResponse($httpResponse)
+    {
+        if (!$httpResponse instanceof HttpResponse && !$httpResponse instanceof PhpResponse) {
+            throw new Exception\InvalidArgumentException('HTTP Response object must'
+                . ' implement one of Zend\Feed\Pubsubhubbub\HttpResponse or'
+                . ' Zend\Http\PhpEnvironment\Response');
+        }
+        $this->httpResponse = $httpResponse;
+        return $this;
+    }
+
+    /**
+     * An instance of a class handling Http Responses. This is implemented in
+     * Zend\Feed\Pubsubhubbub\HttpResponse which shares an unenforced interface with
+     * (i.e. not inherited from) Zend\Controller\Response\Http.
+     *
+     * @return HttpResponse|PhpResponse
+     */
+    public function getHttpResponse()
+    {
+        if ($this->httpResponse === null) {
+            $this->httpResponse = new HttpResponse;
+        }
+        return $this->httpResponse;
+    }
+
+    /**
+     * Sets the number of Subscribers for which any updates are on behalf of.
+     * In other words, is this class serving one or more subscribers? How many?
+     * Defaults to 1 if left unchanged.
+     *
+     * @param  string|int $count
+     * @return AbstractCallback
+     * @throws Exception\InvalidArgumentException
+     */
+    public function setSubscriberCount($count)
+    {
+        $count = intval($count);
+        if ($count <= 0) {
+            throw new Exception\InvalidArgumentException('Subscriber count must be'
+                . ' greater than zero');
+        }
+        $this->subscriberCount = $count;
+        return $this;
+    }
+
+    /**
+     * Gets the number of Subscribers for which any updates are on behalf of.
+     * In other words, is this class serving one or more subscribers? How many?
+     *
+     * @return int
+     */
+    public function getSubscriberCount()
+    {
+        return $this->subscriberCount;
+    }
+
+    /**
+     * Attempt to detect the callback URL (specifically the path forward)
+     * @return string
+     */
+    protected function _detectCallbackUrl()
+    {
+        $callbackUrl = '';
+        if (isset($_SERVER['HTTP_X_ORIGINAL_URL'])) {
+            $callbackUrl = $_SERVER['HTTP_X_ORIGINAL_URL'];
+        } elseif (isset($_SERVER['HTTP_X_REWRITE_URL'])) {
+            $callbackUrl = $_SERVER['HTTP_X_REWRITE_URL'];
+        } elseif (isset($_SERVER['REQUEST_URI'])) {
+            $callbackUrl = $_SERVER['REQUEST_URI'];
+            $scheme = 'http';
+            if ($_SERVER['HTTPS'] == 'on') {
+                $scheme = 'https';
+            }
+            $schemeAndHttpHost = $scheme . '://' . $this->_getHttpHost();
+            if (strpos($callbackUrl, $schemeAndHttpHost) === 0) {
+                $callbackUrl = substr($callbackUrl, strlen($schemeAndHttpHost));
+            }
+        } elseif (isset($_SERVER['ORIG_PATH_INFO'])) {
+            $callbackUrl= $_SERVER['ORIG_PATH_INFO'];
+            if (!empty($_SERVER['QUERY_STRING'])) {
+                $callbackUrl .= '?' . $_SERVER['QUERY_STRING'];
+            }
+        }
+        return $callbackUrl;
+    }
+
+    /**
+     * Get the HTTP host
+     *
+     * @return string
+     */
+    protected function _getHttpHost()
+    {
+        if (!empty($_SERVER['HTTP_HOST'])) {
+            return $_SERVER['HTTP_HOST'];
+        }
+        $scheme = 'http';
+        if ($_SERVER['HTTPS'] == 'on') {
+            $scheme = 'https';
+        }
+        $name = $_SERVER['SERVER_NAME'];
+        $port = $_SERVER['SERVER_PORT'];
+        if (($scheme == 'http' && $port == 80)
+            || ($scheme == 'https' && $port == 443)
+        ) {
+            return $name;
+        }
+
+        return $name . ':' . $port;
+    }
+
+    /**
+     * Retrieve a Header value from either $_SERVER or Apache
+     *
+     * @param string $header
+     * @return bool|string
+     */
+    protected function _getHeader($header)
+    {
+        $temp = strtoupper(str_replace('-', '_', $header));
+        if (!empty($_SERVER[$temp])) {
+            return $_SERVER[$temp];
+        }
+        $temp = 'HTTP_' . strtoupper(str_replace('-', '_', $header));
+        if (!empty($_SERVER[$temp])) {
+            return $_SERVER[$temp];
+        }
+        if (function_exists('apache_request_headers')) {
+            $headers = apache_request_headers();
+            if (!empty($headers[$header])) {
+                return $headers[$header];
+            }
+        }
+        return false;
+    }
+
+    /**
+     * Return the raw body of the request
+     *
+     * @return string|false Raw body, or false if not present
+     */
+    protected function _getRawBody()
+    {
+        $body = file_get_contents('php://input');
+        if (strlen(trim($body)) == 0 && isset($GLOBALS['HTTP_RAW_POST_DATA'])) {
+            $body = $GLOBALS['HTTP_RAW_POST_DATA'];
+        }
+        if (strlen(trim($body)) > 0) {
+            return $body;
+        }
+        return false;
+    }
+}

3rdparty/ZendFeed/PubSubHubbub/CallbackInterface.php

@@ -0,0 +1,51 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\PubSubHubbub;
+
+interface CallbackInterface
+{
+    /**
+     * Handle any callback from a Hub Server responding to a subscription or
+     * unsubscription request. This should be the Hub Server confirming the
+     * the request prior to taking action on it.
+     *
+     * @param array $httpData GET/POST data if available and not in $_GET/POST
+     * @param bool $sendResponseNow Whether to send response now or when asked
+     */
+    public function handle(array $httpData = null, $sendResponseNow = false);
+
+    /**
+     * Send the response, including all headers.
+     * If you wish to handle this via Zend\Mvc\Controller, use the getter methods
+     * to retrieve any data needed to be set on your HTTP Response object, or
+     * simply give this object the HTTP Response instance to work with for you!
+     *
+     * @return void
+     */
+    public function sendResponse();
+
+    /**
+     * An instance of a class handling Http Responses. This is implemented in
+     * Zend\Feed\Pubsubhubbub\HttpResponse which shares an unenforced interface with
+     * (i.e. not inherited from) Zend\Feed\Pubsubhubbub\AbstractCallback.
+     *
+     * @param HttpResponse|\Zend\Http\PhpEnvironment\Response $httpResponse
+     */
+    public function setHttpResponse($httpResponse);
+
+    /**
+     * An instance of a class handling Http Responses. This is implemented in
+     * Zend\Feed\Pubsubhubbub\HttpResponse which shares an unenforced interface with
+     * (i.e. not inherited from) Zend\Feed\Pubsubhubbub\AbstractCallback.
+     *
+     * @return HttpResponse|\Zend\Http\PhpEnvironment\Response
+     */
+    public function getHttpResponse();
+}

3rdparty/ZendFeed/PubSubHubbub/Exception/ExceptionInterface.php

@@ -0,0 +1,15 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\PubSubHubbub\Exception;
+
+use Zend\Feed\Exception\ExceptionInterface as Exception;
+
+interface ExceptionInterface extends Exception
+{}

3rdparty/ZendFeed/PubSubHubbub/Exception/InvalidArgumentException.php

@@ -0,0 +1,17 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\PubSubHubbub\Exception;
+
+use Zend\Feed\Exception;
+
+class InvalidArgumentException
+    extends Exception\InvalidArgumentException
+    implements ExceptionInterface
+{}

3rdparty/ZendFeed/PubSubHubbub/Exception/RuntimeException.php

@@ -0,0 +1,17 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\PubSubHubbub\Exception;
+
+use Zend\Feed\Exception;
+
+class RuntimeException
+    extends Exception\RuntimeException
+    implements ExceptionInterface
+{}

3rdparty/ZendFeed/PubSubHubbub/HttpResponse.php

@@ -0,0 +1,211 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\PubSubHubbub;
+
+class HttpResponse
+{
+    /**
+     * The body of any response to the current callback request
+     *
+     * @var string
+     */
+    protected $content = '';
+
+    /**
+     * Array of headers. Each header is an array with keys 'name' and 'value'
+     *
+     * @var array
+     */
+    protected $headers = array();
+
+    /**
+     * HTTP response code to use in headers
+     *
+     * @var int
+     */
+    protected $statusCode = 200;
+
+    /**
+     * Send the response, including all headers
+     *
+     * @return void
+     */
+    public function send()
+    {
+        $this->sendHeaders();
+        echo $this->getContent();
+    }
+
+    /**
+     * Send all headers
+     *
+     * Sends any headers specified. If an {@link setHttpResponseCode() HTTP response code}
+     * has been specified, it is sent with the first header.
+     *
+     * @return void
+     */
+    public function sendHeaders()
+    {
+        if (count($this->headers) || (200 != $this->statusCode)) {
+            $this->canSendHeaders(true);
+        } elseif (200 == $this->statusCode) {
+            return;
+        }
+        $httpCodeSent = false;
+        foreach ($this->headers as $header) {
+            if (!$httpCodeSent && $this->statusCode) {
+                header($header['name'] . ': ' . $header['value'], $header['replace'], $this->statusCode);
+                $httpCodeSent = true;
+            } else {
+                header($header['name'] . ': ' . $header['value'], $header['replace']);
+            }
+        }
+        if (!$httpCodeSent) {
+            header('HTTP/1.1 ' . $this->statusCode);
+        }
+    }
+
+    /**
+     * Set a header
+     *
+     * If $replace is true, replaces any headers already defined with that
+     * $name.
+     *
+     * @param  string $name
+     * @param  string $value
+     * @param  bool $replace
+     * @return \Zend\Feed\PubSubHubbub\HttpResponse
+     */
+    public function setHeader($name, $value, $replace = false)
+    {
+        $name  = $this->_normalizeHeader($name);
+        $value = (string) $value;
+        if ($replace) {
+            foreach ($this->headers as $key => $header) {
+                if ($name == $header['name']) {
+                    unset($this->headers[$key]);
+                }
+            }
+        }
+        $this->headers[] = array(
+            'name'    => $name,
+            'value'   => $value,
+            'replace' => $replace,
+        );
+
+        return $this;
+    }
+
+    /**
+     * Check if a specific Header is set and return its value
+     *
+     * @param  string $name
+     * @return string|null
+     */
+    public function getHeader($name)
+    {
+        $name = $this->_normalizeHeader($name);
+        foreach ($this->headers as $header) {
+            if ($header['name'] == $name) {
+                return $header['value'];
+            }
+        }
+    }
+
+    /**
+     * Return array of headers; see {@link $headers} for format
+     *
+     * @return array
+     */
+    public function getHeaders()
+    {
+        return $this->headers;
+    }
+
+    /**
+     * Can we send headers?
+     *
+     * @param  bool $throw Whether or not to throw an exception if headers have been sent; defaults to false
+     * @return HttpResponse
+     * @throws Exception\RuntimeException
+     */
+    public function canSendHeaders($throw = false)
+    {
+        $ok = headers_sent($file, $line);
+        if ($ok && $throw) {
+            throw new Exception\RuntimeException('Cannot send headers; headers already sent in ' . $file . ', line ' . $line);
+        }
+        return !$ok;
+    }
+
+    /**
+     * Set HTTP response code to use with headers
+     *
+     * @param  int $code
+     * @return HttpResponse
+     * @throws Exception\InvalidArgumentException
+     */
+    public function setStatusCode($code)
+    {
+        if (!is_int($code) || (100 > $code) || (599 < $code)) {
+            throw new Exception\InvalidArgumentException('Invalid HTTP response'
+            . ' code:' . $code);
+        }
+        $this->statusCode = $code;
+        return $this;
+    }
+
+    /**
+     * Retrieve HTTP response code
+     *
+     * @return int
+     */
+    public function getStatusCode()
+    {
+        return $this->statusCode;
+    }
+
+    /**
+     * Set body content
+     *
+     * @param  string $content
+     * @return \Zend\Feed\PubSubHubbub\HttpResponse
+     */
+    public function setContent($content)
+    {
+        $this->content = (string) $content;
+        $this->setHeader('content-length', strlen($content));
+        return $this;
+    }
+
+    /**
+     * Return the body content
+     *
+     * @return string
+     */
+    public function getContent()
+    {
+        return $this->content;
+    }
+
+    /**
+     * Normalizes a header name to X-Capitalized-Names
+     *
+     * @param  string $name
+     * @return string
+     */
+    protected function _normalizeHeader($name)
+    {
+        $filtered = str_replace(array('-', '_'), ' ', (string) $name);
+        $filtered = ucwords(strtolower($filtered));
+        $filtered = str_replace(' ', '-', $filtered);
+        return $filtered;
+    }
+}

3rdparty/ZendFeed/PubSubHubbub/Model/AbstractModel.php

@@ -0,0 +1,39 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\PubSubHubbub\Model;
+
+use Zend\Db\TableGateway\TableGateway;
+use Zend\Db\TableGateway\TableGatewayInterface;
+
+class AbstractModel
+{
+    /**
+     * Zend\Db\TableGateway\TableGatewayInterface instance to host database methods
+     *
+     * @var TableGatewayInterface
+     */
+    protected $db = null;
+
+    /**
+     * Constructor
+     *
+     * @param null|TableGatewayInterface $tableGateway
+     */
+    public function __construct(TableGatewayInterface $tableGateway = null)
+    {
+        if ($tableGateway === null) {
+            $parts = explode('\\', get_class($this));
+            $table = strtolower(array_pop($parts));
+            $this->db = new TableGateway($table, null);
+        } else {
+            $this->db = $tableGateway;
+        }
+    }
+}

3rdparty/ZendFeed/PubSubHubbub/Model/Subscription.php

@@ -0,0 +1,142 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\PubSubHubbub\Model;
+
+use DateInterval;
+use DateTime;
+use Zend\Feed\PubSubHubbub;
+
+class Subscription extends AbstractModel implements SubscriptionPersistenceInterface
+{
+    /**
+     * Common DateTime object to assist with unit testing
+     *
+     * @var DateTime
+     */
+    protected $now;
+
+    /**
+     * Save subscription to RDMBS
+     *
+     * @param array $data
+     * @return bool
+     * @throws PubSubHubbub\Exception\InvalidArgumentException
+     */
+    public function setSubscription(array $data)
+    {
+        if (!isset($data['id'])) {
+            throw new PubSubHubbub\Exception\InvalidArgumentException(
+                'ID must be set before attempting a save'
+            );
+        }
+        $result = $this->db->select(array('id' => $data['id']));
+        if ($result && (0 < count($result))) {
+            $data['created_time'] = $result->current()->created_time;
+            $now = $this->getNow();
+            if (array_key_exists('lease_seconds', $data)
+                && $data['lease_seconds']
+            ) {
+                $data['expiration_time'] = $now->add(new DateInterval('PT' . $data['lease_seconds'] . 'S'))
+                    ->format('Y-m-d H:i:s');
+            }
+            $this->db->update(
+                $data,
+                array('id' => $data['id'])
+            );
+            return false;
+        }
+
+        $this->db->insert($data);
+        return true;
+    }
+
+    /**
+     * Get subscription by ID/key
+     *
+     * @param  string $key
+     * @return array
+     * @throws PubSubHubbub\Exception\InvalidArgumentException
+     */
+    public function getSubscription($key)
+    {
+        if (empty($key) || !is_string($key)) {
+            throw new PubSubHubbub\Exception\InvalidArgumentException('Invalid parameter "key"'
+                .' of "' . $key . '" must be a non-empty string');
+        }
+        $result = $this->db->select(array('id' => $key));
+        if (count($result)) {
+            return $result->current()->getArrayCopy();
+        }
+        return false;
+    }
+
+    /**
+     * Determine if a subscription matching the key exists
+     *
+     * @param  string $key
+     * @return bool
+     * @throws PubSubHubbub\Exception\InvalidArgumentException
+     */
+    public function hasSubscription($key)
+    {
+        if (empty($key) || !is_string($key)) {
+            throw new PubSubHubbub\Exception\InvalidArgumentException('Invalid parameter "key"'
+                .' of "' . $key . '" must be a non-empty string');
+        }
+        $result = $this->db->select(array('id' => $key));
+        if (count($result)) {
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * Delete a subscription
+     *
+     * @param string $key
+     * @return bool
+     */
+    public function deleteSubscription($key)
+    {
+        $result = $this->db->select(array('id' => $key));
+        if (count($result)) {
+            $this->db->delete(
+                array('id' => $key)
+            );
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * Get a new DateTime or the one injected for testing
+     *
+     * @return DateTime
+     */
+    public function getNow()
+    {
+        if (null === $this->now) {
+            return new DateTime();
+        }
+        return $this->now;
+    }
+
+    /**
+     * Set a DateTime instance for assisting with unit testing
+     *
+     * @param DateTime $now
+     * @return Subscription
+     */
+    public function setNow(DateTime $now)
+    {
+        $this->now = $now;
+        return $this;
+    }
+}

3rdparty/ZendFeed/PubSubHubbub/Model/SubscriptionPersistenceInterface.php

@@ -0,0 +1,47 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\PubSubHubbub\Model;
+
+interface SubscriptionPersistenceInterface
+{
+
+    /**
+     * Save subscription to RDMBS
+     *
+     * @param array $data The key must be stored here as a $data['id'] entry
+     * @return bool
+     */
+    public function setSubscription(array $data);
+
+    /**
+     * Get subscription by ID/key
+     *
+     * @param  string $key
+     * @return array
+     */
+    public function getSubscription($key);
+
+    /**
+     * Determine if a subscription matching the key exists
+     *
+     * @param  string $key
+     * @return bool
+     */
+    public function hasSubscription($key);
+
+    /**
+     * Delete a subscription
+     *
+     * @param string $key
+     * @return bool
+     */
+    public function deleteSubscription($key);
+
+}

3rdparty/ZendFeed/PubSubHubbub/PubSubHubbub.php

@@ -0,0 +1,147 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\PubSubHubbub;
+
+use Zend\Escaper\Escaper;
+use Zend\Feed\Reader;
+use Zend\Http;
+
+class PubSubHubbub
+{
+    /**
+     * Verification Modes
+     */
+    const VERIFICATION_MODE_SYNC  = 'sync';
+    const VERIFICATION_MODE_ASYNC = 'async';
+
+    /**
+     * Subscription States
+     */
+    const SUBSCRIPTION_VERIFIED    = 'verified';
+    const SUBSCRIPTION_NOTVERIFIED = 'not_verified';
+    const SUBSCRIPTION_TODELETE    = 'to_delete';
+
+    /**
+     * @var Escaper
+     */
+    protected static $escaper;
+
+    /**
+     * Singleton instance if required of the HTTP client
+     *
+     * @var Http\Client
+     */
+    protected static $httpClient = null;
+
+    /**
+     * Simple utility function which imports any feed URL and
+     * determines the existence of Hub Server endpoints. This works
+     * best if directly given an instance of Zend\Feed\Reader\Atom|Rss
+     * to leverage off.
+     *
+     * @param  \Zend\Feed\Reader\Feed\AbstractFeed|string $source
+     * @return array
+     * @throws Exception\InvalidArgumentException
+     */
+    public static function detectHubs($source)
+    {
+        if (is_string($source)) {
+            $feed = Reader\Reader::import($source);
+        } elseif ($source instanceof Reader\Feed\AbstractFeed) {
+            $feed = $source;
+        } else {
+            throw new Exception\InvalidArgumentException('The source parameter was'
+            . ' invalid, i.e. not a URL string or an instance of type'
+            . ' Zend\Feed\Reader\Feed\AbstractFeed');
+        }
+        return $feed->getHubs();
+    }
+
+    /**
+     * Allows the external environment to make ZendOAuth use a specific
+     * Client instance.
+     *
+     * @param  Http\Client $httpClient
+     * @return void
+     */
+    public static function setHttpClient(Http\Client $httpClient)
+    {
+        static::$httpClient = $httpClient;
+    }
+
+    /**
+     * Return the singleton instance of the HTTP Client. Note that
+     * the instance is reset and cleared of previous parameters GET/POST.
+     * Headers are NOT reset but handled by this component if applicable.
+     *
+     * @return Http\Client
+     */
+    public static function getHttpClient()
+    {
+        if (!isset(static::$httpClient)) {
+            static::$httpClient = new Http\Client;
+        } else {
+            static::$httpClient->resetParameters();
+        }
+        return static::$httpClient;
+    }
+
+    /**
+     * Simple mechanism to delete the entire singleton HTTP Client instance
+     * which forces a new instantiation for subsequent requests.
+     *
+     * @return void
+     */
+    public static function clearHttpClient()
+    {
+        static::$httpClient = null;
+    }
+
+    /**
+     * Set the Escaper instance
+     *
+     * If null, resets the instance
+     *
+     * @param  null|Escaper $escaper
+     */
+    public static function setEscaper(Escaper $escaper = null)
+    {
+        static::$escaper = $escaper;
+    }
+
+    /**
+     * Get the Escaper instance
+     *
+     * If none registered, lazy-loads an instance.
+     *
+     * @return Escaper
+     */
+    public static function getEscaper()
+    {
+        if (null === static::$escaper) {
+            static::setEscaper(new Escaper());
+        }
+        return static::$escaper;
+    }
+
+    /**
+     * RFC 3986 safe url encoding method
+     *
+     * @param  string $string
+     * @return string
+     */
+    public static function urlencode($string)
+    {
+        $escaper    = static::getEscaper();
+        $rawencoded = $escaper->escapeUrl($string);
+        $rfcencoded = str_replace('%7E', '~', $rawencoded);
+        return $rfcencoded;
+    }
+}

3rdparty/ZendFeed/PubSubHubbub/Publisher.php

@@ -0,0 +1,397 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\PubSubHubbub;
+
+use Traversable;
+use Zend\Feed\Uri;
+use Zend\Http\Request as HttpRequest;
+use Zend\Stdlib\ArrayUtils;
+
+class Publisher
+{
+    /**
+     * An array of URLs for all Hub Servers used by the Publisher, and to
+     * which all topic update notifications will be sent.
+     *
+     * @var array
+     */
+    protected $hubUrls = array();
+
+    /**
+     * An array of topic (Atom or RSS feed) URLs which have been updated and
+     * whose updated status will be notified to all Hub Servers.
+     *
+     * @var array
+     */
+    protected $updatedTopicUrls = array();
+
+    /**
+     * An array of any errors including keys for 'response', 'hubUrl'.
+     * The response is the actual Zend\Http\Response object.
+     *
+     * @var array
+     */
+    protected $errors = array();
+
+    /**
+     * An array of topic (Atom or RSS feed) URLs which have been updated and
+     * whose updated status will be notified to all Hub Servers.
+     *
+     * @var array
+     */
+    protected $parameters = array();
+
+    /**
+     * Constructor; accepts an array or Zend\Config\Config instance to preset
+     * options for the Publisher without calling all supported setter
+     * methods in turn.
+     *
+     * @param  array|Traversable $options
+     */
+    public function __construct($options = null)
+    {
+        if ($options !== null) {
+            $this->setOptions($options);
+        }
+    }
+
+    /**
+     * Process any injected configuration options
+     *
+     * @param  array|Traversable $options Options array or Traversable object
+     * @return Publisher
+     * @throws Exception\InvalidArgumentException
+     */
+    public function setOptions($options)
+    {
+        if ($options instanceof Traversable) {
+            $options = ArrayUtils::iteratorToArray($options);
+        }
+
+        if (!is_array($options)) {
+            throw new Exception\InvalidArgumentException('Array or Traversable object'
+                                . 'expected, got ' . gettype($options));
+        }
+        if (array_key_exists('hubUrls', $options)) {
+            $this->addHubUrls($options['hubUrls']);
+        }
+        if (array_key_exists('updatedTopicUrls', $options)) {
+            $this->addUpdatedTopicUrls($options['updatedTopicUrls']);
+        }
+        if (array_key_exists('parameters', $options)) {
+            $this->setParameters($options['parameters']);
+        }
+        return $this;
+    }
+
+    /**
+     * Add a Hub Server URL supported by Publisher
+     *
+     * @param  string $url
+     * @return Publisher
+     * @throws Exception\InvalidArgumentException
+     */
+    public function addHubUrl($url)
+    {
+        if (empty($url) || !is_string($url) || !Uri::factory($url)->isValid()) {
+            throw new Exception\InvalidArgumentException('Invalid parameter "url"'
+                . ' of "' . $url . '" must be a non-empty string and a valid'
+                . 'URL');
+        }
+        $this->hubUrls[] = $url;
+        return $this;
+    }
+
+    /**
+     * Add an array of Hub Server URLs supported by Publisher
+     *
+     * @param  array $urls
+     * @return Publisher
+     */
+    public function addHubUrls(array $urls)
+    {
+        foreach ($urls as $url) {
+            $this->addHubUrl($url);
+        }
+        return $this;
+    }
+
+    /**
+     * Remove a Hub Server URL
+     *
+     * @param  string $url
+     * @return Publisher
+     */
+    public function removeHubUrl($url)
+    {
+        if (!in_array($url, $this->getHubUrls())) {
+            return $this;
+        }
+        $key = array_search($url, $this->hubUrls);
+        unset($this->hubUrls[$key]);
+        return $this;
+    }
+
+    /**
+     * Return an array of unique Hub Server URLs currently available
+     *
+     * @return array
+     */
+    public function getHubUrls()
+    {
+        $this->hubUrls = array_unique($this->hubUrls);
+        return $this->hubUrls;
+    }
+
+    /**
+     * Add a URL to a topic (Atom or RSS feed) which has been updated
+     *
+     * @param  string $url
+     * @return Publisher
+     * @throws Exception\InvalidArgumentException
+     */
+    public function addUpdatedTopicUrl($url)
+    {
+        if (empty($url) || !is_string($url) || !Uri::factory($url)->isValid()) {
+            throw new Exception\InvalidArgumentException('Invalid parameter "url"'
+                . ' of "' . $url . '" must be a non-empty string and a valid'
+                . 'URL');
+        }
+        $this->updatedTopicUrls[] = $url;
+        return $this;
+    }
+
+    /**
+     * Add an array of Topic URLs which have been updated
+     *
+     * @param  array $urls
+     * @return Publisher
+     */
+    public function addUpdatedTopicUrls(array $urls)
+    {
+        foreach ($urls as $url) {
+            $this->addUpdatedTopicUrl($url);
+        }
+        return $this;
+    }
+
+    /**
+     * Remove an updated topic URL
+     *
+     * @param  string $url
+     * @return Publisher
+     */
+    public function removeUpdatedTopicUrl($url)
+    {
+        if (!in_array($url, $this->getUpdatedTopicUrls())) {
+            return $this;
+        }
+        $key = array_search($url, $this->updatedTopicUrls);
+        unset($this->updatedTopicUrls[$key]);
+        return $this;
+    }
+
+    /**
+     * Return an array of unique updated topic URLs currently available
+     *
+     * @return array
+     */
+    public function getUpdatedTopicUrls()
+    {
+        $this->updatedTopicUrls = array_unique($this->updatedTopicUrls);
+        return $this->updatedTopicUrls;
+    }
+
+    /**
+     * Notifies a single Hub Server URL of changes
+     *
+     * @param  string $url The Hub Server's URL
+     * @return void
+     * @throws Exception\InvalidArgumentException
+     * @throws Exception\RuntimeException
+     */
+    public function notifyHub($url)
+    {
+        if (empty($url) || !is_string($url) || !Uri::factory($url)->isValid()) {
+            throw new Exception\InvalidArgumentException('Invalid parameter "url"'
+                . ' of "' . $url . '" must be a non-empty string and a valid'
+                . 'URL');
+        }
+        $client = $this->_getHttpClient();
+        $client->setUri($url);
+        $response = $client->getResponse();
+        if ($response->getStatusCode() !== 204) {
+            throw new Exception\RuntimeException('Notification to Hub Server '
+                . 'at "' . $url . '" appears to have failed with a status code of "'
+                . $response->getStatusCode() . '" and message "'
+                . $response->getContent() . '"');
+        }
+    }
+
+    /**
+     * Notifies all Hub Server URLs of changes
+     *
+     * If a Hub notification fails, certain data will be retained in an
+     * an array retrieved using getErrors(), if a failure occurs for any Hubs
+     * the isSuccess() check will return FALSE. This method is designed not
+     * to needlessly fail with an Exception/Error unless from Zend\Http\Client.
+     *
+     * @return void
+     * @throws Exception\RuntimeException
+     */
+    public function notifyAll()
+    {
+        $client = $this->_getHttpClient();
+        $hubs   = $this->getHubUrls();
+        if (empty($hubs)) {
+            throw new Exception\RuntimeException('No Hub Server URLs'
+                . ' have been set so no notifications can be sent');
+        }
+        $this->errors = array();
+        foreach ($hubs as $url) {
+            $client->setUri($url);
+            $response = $client->getResponse();
+            if ($response->getStatusCode() !== 204) {
+                $this->errors[] = array(
+                    'response' => $response,
+                    'hubUrl' => $url
+                );
+            }
+        }
+    }
+
+    /**
+     * Add an optional parameter to the update notification requests
+     *
+     * @param  string $name
+     * @param  string|null $value
+     * @return Publisher
+     * @throws Exception\InvalidArgumentException
+     */
+    public function setParameter($name, $value = null)
+    {
+        if (is_array($name)) {
+            $this->setParameters($name);
+            return $this;
+        }
+        if (empty($name) || !is_string($name)) {
+            throw new Exception\InvalidArgumentException('Invalid parameter "name"'
+                . ' of "' . $name . '" must be a non-empty string');
+        }
+        if ($value === null) {
+            $this->removeParameter($name);
+            return $this;
+        }
+        if (empty($value) || (!is_string($value) && $value !== null)) {
+            throw new Exception\InvalidArgumentException('Invalid parameter "value"'
+                . ' of "' . $value . '" must be a non-empty string');
+        }
+        $this->parameters[$name] = $value;
+        return $this;
+    }
+
+    /**
+     * Add an optional parameter to the update notification requests
+     *
+     * @param  array $parameters
+     * @return Publisher
+     */
+    public function setParameters(array $parameters)
+    {
+        foreach ($parameters as $name => $value) {
+            $this->setParameter($name, $value);
+        }
+        return $this;
+    }
+
+    /**
+     * Remove an optional parameter for the notification requests
+     *
+     * @param  string $name
+     * @return Publisher
+     * @throws Exception\InvalidArgumentException
+     */
+    public function removeParameter($name)
+    {
+        if (empty($name) || !is_string($name)) {
+            throw new Exception\InvalidArgumentException('Invalid parameter "name"'
+                . ' of "' . $name . '" must be a non-empty string');
+        }
+        if (array_key_exists($name, $this->parameters)) {
+            unset($this->parameters[$name]);
+        }
+        return $this;
+    }
+
+    /**
+     * Return an array of optional parameters for notification requests
+     *
+     * @return array
+     */
+    public function getParameters()
+    {
+        return $this->parameters;
+    }
+
+    /**
+     * Returns a boolean indicator of whether the notifications to Hub
+     * Servers were ALL successful. If even one failed, FALSE is returned.
+     *
+     * @return bool
+     */
+    public function isSuccess()
+    {
+        return !(count($this->errors) != 0);
+    }
+
+    /**
+     * Return an array of errors met from any failures, including keys:
+     * 'response' => the Zend\Http\Response object from the failure
+     * 'hubUrl' => the URL of the Hub Server whose notification failed
+     *
+     * @return array
+     */
+    public function getErrors()
+    {
+        return $this->errors;
+    }
+
+    /**
+     * Get a basic prepared HTTP client for use
+     *
+     * @return \Zend\Http\Client
+     * @throws Exception\RuntimeException
+     */
+    protected function _getHttpClient()
+    {
+        $client = PubSubHubbub::getHttpClient();
+        $client->setMethod(HttpRequest::METHOD_POST);
+        $client->setOptions(array(
+            'useragent' => 'Zend_Feed_Pubsubhubbub_Publisher/' . Version::VERSION,
+        ));
+        $params   = array();
+        $params[] = 'hub.mode=publish';
+        $topics   = $this->getUpdatedTopicUrls();
+        if (empty($topics)) {
+            throw new Exception\RuntimeException('No updated topic URLs'
+                . ' have been set');
+        }
+        foreach ($topics as $topicUrl) {
+            $params[] = 'hub.url=' . urlencode($topicUrl);
+        }
+        $optParams = $this->getParameters();
+        foreach ($optParams as $name => $value) {
+            $params[] = urlencode($name) . '=' . urlencode($value);
+        }
+        $paramString = implode('&', $params);
+        $client->setRawBody($paramString);
+        return $client;
+    }
+}

3rdparty/ZendFeed/PubSubHubbub/Subscriber.php

@@ -0,0 +1,837 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\PubSubHubbub;
+
+use DateInterval;
+use DateTime;
+use Traversable;
+use Zend\Feed\Uri;
+use Zend\Http\Request as HttpRequest;
+use Zend\Stdlib\ArrayUtils;
+
+class Subscriber
+{
+    /**
+     * An array of URLs for all Hub Servers to subscribe/unsubscribe.
+     *
+     * @var array
+     */
+    protected $hubUrls = array();
+
+    /**
+     * An array of optional parameters to be included in any
+     * (un)subscribe requests.
+     *
+     * @var array
+     */
+    protected $parameters = array();
+
+    /**
+     * The URL of the topic (Rss or Atom feed) which is the subject of
+     * our current intent to subscribe to/unsubscribe from updates from
+     * the currently configured Hub Servers.
+     *
+     * @var string
+     */
+    protected $topicUrl = '';
+
+    /**
+     * The URL Hub Servers must use when communicating with this Subscriber
+     *
+     * @var string
+     */
+    protected $callbackUrl = '';
+
+    /**
+     * The number of seconds for which the subscriber would like to have the
+     * subscription active. Defaults to null, i.e. not sent, to setup a
+     * permanent subscription if possible.
+     *
+     * @var int
+     */
+    protected $leaseSeconds = null;
+
+    /**
+     * The preferred verification mode (sync or async). By default, this
+     * Subscriber prefers synchronous verification, but is considered
+     * desirable to support asynchronous verification if possible.
+     *
+     * Zend\Feed\Pubsubhubbub\Subscriber will always send both modes, whose
+     * order of occurrence in the parameter list determines this preference.
+     *
+     * @var string
+     */
+    protected $preferredVerificationMode = PubSubHubbub::VERIFICATION_MODE_SYNC;
+
+    /**
+     * An array of any errors including keys for 'response', 'hubUrl'.
+     * The response is the actual Zend\Http\Response object.
+     *
+     * @var array
+     */
+    protected $errors = array();
+
+    /**
+     * An array of Hub Server URLs for Hubs operating at this time in
+     * asynchronous verification mode.
+     *
+     * @var array
+     */
+    protected $asyncHubs = array();
+
+    /**
+     * An instance of Zend\Feed\Pubsubhubbub\Model\SubscriptionPersistence used to background
+     * save any verification tokens associated with a subscription or other.
+     *
+     * @var \Zend\Feed\PubSubHubbub\Model\SubscriptionPersistenceInterface
+     */
+    protected $storage = null;
+
+    /**
+     * An array of authentication credentials for HTTP Basic Authentication
+     * if required by specific Hubs. The array is indexed by Hub Endpoint URI
+     * and the value is a simple array of the username and password to apply.
+     *
+     * @var array
+     */
+    protected $authentications = array();
+
+    /**
+     * Tells the Subscriber to append any subscription identifier to the path
+     * of the base Callback URL. E.g. an identifier "subkey1" would be added
+     * to the callback URL "http://www.example.com/callback" to create a subscription
+     * specific Callback URL of "http://www.example.com/callback/subkey1".
+     *
+     * This is required for all Hubs using the Pubsubhubbub 0.1 Specification.
+     * It should be manually intercepted and passed to the Callback class using
+     * Zend\Feed\Pubsubhubbub\Subscriber\Callback::setSubscriptionKey(). Will
+     * require a route in the form "callback/:subkey" to allow the parameter be
+     * retrieved from an action using the Zend\Controller\Action::\getParam()
+     * method.
+     *
+     * @var string
+     */
+    protected $usePathParameter = false;
+
+    /**
+     * Constructor; accepts an array or Traversable instance to preset
+     * options for the Subscriber without calling all supported setter
+     * methods in turn.
+     *
+     * @param  array|Traversable $options
+     */
+    public function __construct($options = null)
+    {
+        if ($options !== null) {
+            $this->setOptions($options);
+        }
+    }
+
+    /**
+     * Process any injected configuration options
+     *
+     * @param  array|Traversable $options
+     * @return Subscriber
+     * @throws Exception\InvalidArgumentException
+     */
+    public function setOptions($options)
+    {
+        if ($options instanceof Traversable) {
+            $options = ArrayUtils::iteratorToArray($options);
+        }
+
+        if (!is_array($options)) {
+            throw new Exception\InvalidArgumentException('Array or Traversable object'
+                                . 'expected, got ' . gettype($options));
+        }
+        if (array_key_exists('hubUrls', $options)) {
+            $this->addHubUrls($options['hubUrls']);
+        }
+        if (array_key_exists('callbackUrl', $options)) {
+            $this->setCallbackUrl($options['callbackUrl']);
+        }
+        if (array_key_exists('topicUrl', $options)) {
+            $this->setTopicUrl($options['topicUrl']);
+        }
+        if (array_key_exists('storage', $options)) {
+            $this->setStorage($options['storage']);
+        }
+        if (array_key_exists('leaseSeconds', $options)) {
+            $this->setLeaseSeconds($options['leaseSeconds']);
+        }
+        if (array_key_exists('parameters', $options)) {
+            $this->setParameters($options['parameters']);
+        }
+        if (array_key_exists('authentications', $options)) {
+            $this->addAuthentications($options['authentications']);
+        }
+        if (array_key_exists('usePathParameter', $options)) {
+            $this->usePathParameter($options['usePathParameter']);
+        }
+        if (array_key_exists('preferredVerificationMode', $options)) {
+            $this->setPreferredVerificationMode(
+                $options['preferredVerificationMode']
+            );
+        }
+        return $this;
+    }
+
+    /**
+     * Set the topic URL (RSS or Atom feed) to which the intended (un)subscribe
+     * event will relate
+     *
+     * @param  string $url
+     * @return Subscriber
+     * @throws Exception\InvalidArgumentException
+     */
+    public function setTopicUrl($url)
+    {
+        if (empty($url) || !is_string($url) || !Uri::factory($url)->isValid()) {
+            throw new Exception\InvalidArgumentException('Invalid parameter "url"'
+                .' of "' . $url . '" must be a non-empty string and a valid'
+                .' URL');
+        }
+        $this->topicUrl = $url;
+        return $this;
+    }
+
+    /**
+     * Set the topic URL (RSS or Atom feed) to which the intended (un)subscribe
+     * event will relate
+     *
+     * @return string
+     * @throws Exception\RuntimeException
+     */
+    public function getTopicUrl()
+    {
+        if (empty($this->topicUrl)) {
+            throw new Exception\RuntimeException('A valid Topic (RSS or Atom'
+                . ' feed) URL MUST be set before attempting any operation');
+        }
+        return $this->topicUrl;
+    }
+
+    /**
+     * Set the number of seconds for which any subscription will remain valid
+     *
+     * @param  int $seconds
+     * @return Subscriber
+     * @throws Exception\InvalidArgumentException
+     */
+    public function setLeaseSeconds($seconds)
+    {
+        $seconds = intval($seconds);
+        if ($seconds <= 0) {
+            throw new Exception\InvalidArgumentException('Expected lease seconds'
+                . ' must be an integer greater than zero');
+        }
+        $this->leaseSeconds = $seconds;
+        return $this;
+    }
+
+    /**
+     * Get the number of lease seconds on subscriptions
+     *
+     * @return int
+     */
+    public function getLeaseSeconds()
+    {
+        return $this->leaseSeconds;
+    }
+
+    /**
+     * Set the callback URL to be used by Hub Servers when communicating with
+     * this Subscriber
+     *
+     * @param  string $url
+     * @return Subscriber
+     * @throws Exception\InvalidArgumentException
+     */
+    public function setCallbackUrl($url)
+    {
+        if (empty($url) || !is_string($url) || !Uri::factory($url)->isValid()) {
+            throw new Exception\InvalidArgumentException('Invalid parameter "url"'
+                . ' of "' . $url . '" must be a non-empty string and a valid'
+                . ' URL');
+        }
+        $this->callbackUrl = $url;
+        return $this;
+    }
+
+    /**
+     * Get the callback URL to be used by Hub Servers when communicating with
+     * this Subscriber
+     *
+     * @return string
+     * @throws Exception\RuntimeException
+     */
+    public function getCallbackUrl()
+    {
+        if (empty($this->callbackUrl)) {
+            throw new Exception\RuntimeException('A valid Callback URL MUST be'
+                . ' set before attempting any operation');
+        }
+        return $this->callbackUrl;
+    }
+
+    /**
+     * Set preferred verification mode (sync or async). By default, this
+     * Subscriber prefers synchronous verification, but does support
+     * asynchronous if that's the Hub Server's utilised mode.
+     *
+     * Zend\Feed\Pubsubhubbub\Subscriber will always send both modes, whose
+     * order of occurrence in the parameter list determines this preference.
+     *
+     * @param  string $mode Should be 'sync' or 'async'
+     * @return Subscriber
+     * @throws Exception\InvalidArgumentException
+     */
+    public function setPreferredVerificationMode($mode)
+    {
+        if ($mode !== PubSubHubbub::VERIFICATION_MODE_SYNC
+            && $mode !== PubSubHubbub::VERIFICATION_MODE_ASYNC
+        ) {
+            throw new Exception\InvalidArgumentException('Invalid preferred'
+                . ' mode specified: "' . $mode . '" but should be one of'
+                . ' Zend\Feed\Pubsubhubbub::VERIFICATION_MODE_SYNC or'
+                . ' Zend\Feed\Pubsubhubbub::VERIFICATION_MODE_ASYNC');
+        }
+        $this->preferredVerificationMode = $mode;
+        return $this;
+    }
+
+    /**
+     * Get preferred verification mode (sync or async).
+     *
+     * @return string
+     */
+    public function getPreferredVerificationMode()
+    {
+        return $this->preferredVerificationMode;
+    }
+
+    /**
+     * Add a Hub Server URL supported by Publisher
+     *
+     * @param  string $url
+     * @return Subscriber
+     * @throws Exception\InvalidArgumentException
+     */
+    public function addHubUrl($url)
+    {
+        if (empty($url) || !is_string($url) || !Uri::factory($url)->isValid()) {
+            throw new Exception\InvalidArgumentException('Invalid parameter "url"'
+                . ' of "' . $url . '" must be a non-empty string and a valid'
+                . ' URL');
+        }
+        $this->hubUrls[] = $url;
+        return $this;
+    }
+
+    /**
+     * Add an array of Hub Server URLs supported by Publisher
+     *
+     * @param  array $urls
+     * @return Subscriber
+     */
+    public function addHubUrls(array $urls)
+    {
+        foreach ($urls as $url) {
+            $this->addHubUrl($url);
+        }
+        return $this;
+    }
+
+    /**
+     * Remove a Hub Server URL
+     *
+     * @param  string $url
+     * @return Subscriber
+     */
+    public function removeHubUrl($url)
+    {
+        if (!in_array($url, $this->getHubUrls())) {
+            return $this;
+        }
+        $key = array_search($url, $this->hubUrls);
+        unset($this->hubUrls[$key]);
+        return $this;
+    }
+
+    /**
+     * Return an array of unique Hub Server URLs currently available
+     *
+     * @return array
+     */
+    public function getHubUrls()
+    {
+        $this->hubUrls = array_unique($this->hubUrls);
+        return $this->hubUrls;
+    }
+
+    /**
+     * Add authentication credentials for a given URL
+     *
+     * @param  string $url
+     * @param  array $authentication
+     * @return Subscriber
+     * @throws Exception\InvalidArgumentException
+     */
+    public function addAuthentication($url, array $authentication)
+    {
+        if (empty($url) || !is_string($url) || !Uri::factory($url)->isValid()) {
+            throw new Exception\InvalidArgumentException('Invalid parameter "url"'
+                . ' of "' . $url . '" must be a non-empty string and a valid'
+                . ' URL');
+        }
+        $this->authentications[$url] = $authentication;
+        return $this;
+    }
+
+    /**
+     * Add authentication credentials for hub URLs
+     *
+     * @param  array $authentications
+     * @return Subscriber
+     */
+    public function addAuthentications(array $authentications)
+    {
+        foreach ($authentications as $url => $authentication) {
+            $this->addAuthentication($url, $authentication);
+        }
+        return $this;
+    }
+
+    /**
+     * Get all hub URL authentication credentials
+     *
+     * @return array
+     */
+    public function getAuthentications()
+    {
+        return $this->authentications;
+    }
+
+    /**
+     * Set flag indicating whether or not to use a path parameter
+     *
+     * @param  bool $bool
+     * @return Subscriber
+     */
+    public function usePathParameter($bool = true)
+    {
+        $this->usePathParameter = $bool;
+        return $this;
+    }
+
+    /**
+     * Add an optional parameter to the (un)subscribe requests
+     *
+     * @param  string $name
+     * @param  string|null $value
+     * @return Subscriber
+     * @throws Exception\InvalidArgumentException
+     */
+    public function setParameter($name, $value = null)
+    {
+        if (is_array($name)) {
+            $this->setParameters($name);
+            return $this;
+        }
+        if (empty($name) || !is_string($name)) {
+            throw new Exception\InvalidArgumentException('Invalid parameter "name"'
+                . ' of "' . $name . '" must be a non-empty string');
+        }
+        if ($value === null) {
+            $this->removeParameter($name);
+            return $this;
+        }
+        if (empty($value) || (!is_string($value) && $value !== null)) {
+            throw new Exception\InvalidArgumentException('Invalid parameter "value"'
+                . ' of "' . $value . '" must be a non-empty string');
+        }
+        $this->parameters[$name] = $value;
+        return $this;
+    }
+
+    /**
+     * Add an optional parameter to the (un)subscribe requests
+     *
+     * @param  array $parameters
+     * @return Subscriber
+     */
+    public function setParameters(array $parameters)
+    {
+        foreach ($parameters as $name => $value) {
+            $this->setParameter($name, $value);
+        }
+        return $this;
+    }
+
+    /**
+     * Remove an optional parameter for the (un)subscribe requests
+     *
+     * @param  string $name
+     * @return Subscriber
+     * @throws Exception\InvalidArgumentException
+     */
+    public function removeParameter($name)
+    {
+        if (empty($name) || !is_string($name)) {
+            throw new Exception\InvalidArgumentException('Invalid parameter "name"'
+                . ' of "' . $name . '" must be a non-empty string');
+        }
+        if (array_key_exists($name, $this->parameters)) {
+            unset($this->parameters[$name]);
+        }
+        return $this;
+    }
+
+    /**
+     * Return an array of optional parameters for (un)subscribe requests
+     *
+     * @return array
+     */
+    public function getParameters()
+    {
+        return $this->parameters;
+    }
+
+    /**
+     * Sets an instance of Zend\Feed\Pubsubhubbub\Model\SubscriptionPersistence used to background
+     * save any verification tokens associated with a subscription or other.
+     *
+     * @param  Model\SubscriptionPersistenceInterface $storage
+     * @return Subscriber
+     */
+    public function setStorage(Model\SubscriptionPersistenceInterface $storage)
+    {
+        $this->storage = $storage;
+        return $this;
+    }
+
+    /**
+     * Gets an instance of Zend\Feed\Pubsubhubbub\Storage\StoragePersistence used
+     * to background save any verification tokens associated with a subscription
+     * or other.
+     *
+     * @return Model\SubscriptionPersistenceInterface
+     * @throws Exception\RuntimeException
+     */
+    public function getStorage()
+    {
+        if ($this->storage === null) {
+            throw new Exception\RuntimeException('No storage vehicle '
+                . 'has been set.');
+        }
+        return $this->storage;
+    }
+
+    /**
+     * Subscribe to one or more Hub Servers using the stored Hub URLs
+     * for the given Topic URL (RSS or Atom feed)
+     *
+     * @return void
+     */
+    public function subscribeAll()
+    {
+        $this->_doRequest('subscribe');
+    }
+
+    /**
+     * Unsubscribe from one or more Hub Servers using the stored Hub URLs
+     * for the given Topic URL (RSS or Atom feed)
+     *
+     * @return void
+     */
+    public function unsubscribeAll()
+    {
+        $this->_doRequest('unsubscribe');
+    }
+
+    /**
+     * Returns a boolean indicator of whether the notifications to Hub
+     * Servers were ALL successful. If even one failed, FALSE is returned.
+     *
+     * @return bool
+     */
+    public function isSuccess()
+    {
+        if (count($this->errors) > 0) {
+            return false;
+        }
+        return true;
+    }
+
+    /**
+     * Return an array of errors met from any failures, including keys:
+     * 'response' => the Zend\Http\Response object from the failure
+     * 'hubUrl' => the URL of the Hub Server whose notification failed
+     *
+     * @return array
+     */
+    public function getErrors()
+    {
+        return $this->errors;
+    }
+
+    /**
+     * Return an array of Hub Server URLs who returned a response indicating
+     * operation in Asynchronous Verification Mode, i.e. they will not confirm
+     * any (un)subscription immediately but at a later time (Hubs may be
+     * doing this as a batch process when load balancing)
+     *
+     * @return array
+     */
+    public function getAsyncHubs()
+    {
+        return $this->asyncHubs;
+    }
+
+    /**
+     * Executes an (un)subscribe request
+     *
+     * @param  string $mode
+     * @return void
+     * @throws Exception\RuntimeException
+     */
+    protected function _doRequest($mode)
+    {
+        $client = $this->_getHttpClient();
+        $hubs   = $this->getHubUrls();
+        if (empty($hubs)) {
+            throw new Exception\RuntimeException('No Hub Server URLs'
+                . ' have been set so no subscriptions can be attempted');
+        }
+        $this->errors = array();
+        $this->asyncHubs = array();
+        foreach ($hubs as $url) {
+            if (array_key_exists($url, $this->authentications)) {
+                $auth = $this->authentications[$url];
+                $client->setAuth($auth[0], $auth[1]);
+            }
+            $client->setUri($url);
+            $client->setRawBody($params = $this->_getRequestParameters($url, $mode));
+            $response = $client->send();
+            if ($response->getStatusCode() !== 204
+                && $response->getStatusCode() !== 202
+            ) {
+                $this->errors[] = array(
+                    'response' => $response,
+                    'hubUrl'   => $url,
+                );
+            /**
+             * At first I thought it was needed, but the backend storage will
+             * allow tracking async without any user interference. It's left
+             * here in case the user is interested in knowing what Hubs
+             * are using async verification modes so they may update Models and
+             * move these to asynchronous processes.
+             */
+            } elseif ($response->getStatusCode() == 202) {
+                $this->asyncHubs[] = array(
+                    'response' => $response,
+                    'hubUrl'   => $url,
+                );
+            }
+        }
+    }
+
+    /**
+     * Get a basic prepared HTTP client for use
+     *
+     * @return \Zend\Http\Client
+     */
+    protected function _getHttpClient()
+    {
+        $client = PubSubHubbub::getHttpClient();
+        $client->setMethod(HttpRequest::METHOD_POST);
+        $client->setOptions(array('useragent' => 'Zend_Feed_Pubsubhubbub_Subscriber/'
+            . Version::VERSION));
+        return $client;
+    }
+
+    /**
+     * Return a list of standard protocol/optional parameters for addition to
+     * client's POST body that are specific to the current Hub Server URL
+     *
+     * @param  string $hubUrl
+     * @param  string $mode
+     * @return string
+     * @throws Exception\InvalidArgumentException
+     */
+    protected function _getRequestParameters($hubUrl, $mode)
+    {
+        if (!in_array($mode, array('subscribe', 'unsubscribe'))) {
+            throw new Exception\InvalidArgumentException('Invalid mode specified: "'
+                . $mode . '" which should have been "subscribe" or "unsubscribe"');
+        }
+
+        $params = array(
+            'hub.mode'  => $mode,
+            'hub.topic' => $this->getTopicUrl(),
+        );
+
+        if ($this->getPreferredVerificationMode()
+                == PubSubHubbub::VERIFICATION_MODE_SYNC
+        ) {
+            $vmodes = array(
+                PubSubHubbub::VERIFICATION_MODE_SYNC,
+                PubSubHubbub::VERIFICATION_MODE_ASYNC,
+            );
+        } else {
+            $vmodes = array(
+                PubSubHubbub::VERIFICATION_MODE_ASYNC,
+                PubSubHubbub::VERIFICATION_MODE_SYNC,
+            );
+        }
+        $params['hub.verify'] = array();
+        foreach ($vmodes as $vmode) {
+            $params['hub.verify'][] = $vmode;
+        }
+
+        /**
+         * Establish a persistent verify_token and attach key to callback
+         * URL's path/query_string
+         */
+        $key   = $this->_generateSubscriptionKey($params, $hubUrl);
+        $token = $this->_generateVerifyToken();
+        $params['hub.verify_token'] = $token;
+
+        // Note: query string only usable with PuSH 0.2 Hubs
+        if (!$this->usePathParameter) {
+            $params['hub.callback'] = $this->getCallbackUrl()
+                . '?xhub.subscription=' . PubSubHubbub::urlencode($key);
+        } else {
+            $params['hub.callback'] = rtrim($this->getCallbackUrl(), '/')
+                . '/' . PubSubHubbub::urlencode($key);
+        }
+        if ($mode == 'subscribe' && $this->getLeaseSeconds() !== null) {
+            $params['hub.lease_seconds'] = $this->getLeaseSeconds();
+        }
+
+        // hub.secret not currently supported
+        $optParams = $this->getParameters();
+        foreach ($optParams as $name => $value) {
+            $params[$name] = $value;
+        }
+
+        // store subscription to storage
+        $now = new DateTime();
+        $expires = null;
+        if (isset($params['hub.lease_seconds'])) {
+            $expires = $now->add(new DateInterval('PT' . $params['hub.lease_seconds'] . 'S'))
+                ->format('Y-m-d H:i:s');
+        }
+        $data = array(
+            'id'                 => $key,
+            'topic_url'          => $params['hub.topic'],
+            'hub_url'            => $hubUrl,
+            'created_time'       => $now->format('Y-m-d H:i:s'),
+            'lease_seconds'      => $params['hub.lease_seconds'],
+            'verify_token'       => hash('sha256', $params['hub.verify_token']),
+            'secret'             => null,
+            'expiration_time'    => $expires,
+            'subscription_state' => ($mode == 'unsubscribe')? PubSubHubbub::SUBSCRIPTION_TODELETE : PubSubHubbub::SUBSCRIPTION_NOTVERIFIED,
+        );
+        $this->getStorage()->setSubscription($data);
+
+        return $this->_toByteValueOrderedString(
+            $this->_urlEncode($params)
+        );
+    }
+
+    /**
+     * Simple helper to generate a verification token used in (un)subscribe
+     * requests to a Hub Server. Follows no particular method, which means
+     * it might be improved/changed in future.
+     *
+     * @return string
+     */
+    protected function _generateVerifyToken()
+    {
+        if (!empty($this->testStaticToken)) {
+            return $this->testStaticToken;
+        }
+        return uniqid(rand(), true) . time();
+    }
+
+    /**
+     * Simple helper to generate a verification token used in (un)subscribe
+     * requests to a Hub Server.
+     *
+     * @param array   $params
+     * @param string $hubUrl The Hub Server URL for which this token will apply
+     * @return string
+     */
+    protected function _generateSubscriptionKey(array $params, $hubUrl)
+    {
+        $keyBase = $params['hub.topic'] . $hubUrl;
+        $key     = md5($keyBase);
+
+        return $key;
+    }
+
+    /**
+     * URL Encode an array of parameters
+     *
+     * @param  array $params
+     * @return array
+     */
+    protected function _urlEncode(array $params)
+    {
+        $encoded = array();
+        foreach ($params as $key => $value) {
+            if (is_array($value)) {
+                $ekey = PubSubHubbub::urlencode($key);
+                $encoded[$ekey] = array();
+                foreach ($value as $duplicateKey) {
+                    $encoded[$ekey][]
+                        = PubSubHubbub::urlencode($duplicateKey);
+                }
+            } else {
+                $encoded[PubSubHubbub::urlencode($key)]
+                    = PubSubHubbub::urlencode($value);
+            }
+        }
+        return $encoded;
+    }
+
+    /**
+     * Order outgoing parameters
+     *
+     * @param  array $params
+     * @return array
+     */
+    protected function _toByteValueOrderedString(array $params)
+    {
+        $return = array();
+        uksort($params, 'strnatcmp');
+        foreach ($params as $key => $value) {
+            if (is_array($value)) {
+                foreach ($value as $keyduplicate) {
+                    $return[] = $key . '=' . $keyduplicate;
+                }
+            } else {
+                $return[] = $key . '=' . $value;
+            }
+        }
+        return implode('&', $return);
+    }
+
+    /**
+     * This is STRICTLY for testing purposes only...
+     */
+    protected $testStaticToken = null;
+
+    final public function setTestStaticToken($token)
+    {
+        $this->testStaticToken = (string) $token;
+    }
+}

3rdparty/ZendFeed/PubSubHubbub/Subscriber/Callback.php

@@ -0,0 +1,316 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\PubSubHubbub\Subscriber;
+
+use Zend\Feed\PubSubHubbub;
+use Zend\Feed\PubSubHubbub\Exception;
+use Zend\Feed\Uri;
+
+class Callback extends PubSubHubbub\AbstractCallback
+{
+    /**
+     * Contains the content of any feeds sent as updates to the Callback URL
+     *
+     * @var string
+     */
+    protected $feedUpdate = null;
+
+    /**
+     * Holds a manually set subscription key (i.e. identifies a unique
+     * subscription) which is typical when it is not passed in the query string
+     * but is part of the Callback URL path, requiring manual retrieval e.g.
+     * using a route and the \Zend\Mvc\Router\RouteMatch::getParam() method.
+     *
+     * @var string
+     */
+    protected $subscriptionKey = null;
+
+    /**
+     * After verification, this is set to the verified subscription's data.
+     *
+     * @var array
+     */
+    protected $currentSubscriptionData = null;
+
+    /**
+     * Set a subscription key to use for the current callback request manually.
+     * Required if usePathParameter is enabled for the Subscriber.
+     *
+     * @param  string $key
+     * @return \Zend\Feed\PubSubHubbub\Subscriber\Callback
+     */
+    public function setSubscriptionKey($key)
+    {
+        $this->subscriptionKey = $key;
+        return $this;
+    }
+
+    /**
+     * Handle any callback from a Hub Server responding to a subscription or
+     * unsubscription request. This should be the Hub Server confirming the
+     * the request prior to taking action on it.
+     *
+     * @param  array $httpGetData GET data if available and not in $_GET
+     * @param  bool $sendResponseNow Whether to send response now or when asked
+     * @return void
+     */
+    public function handle(array $httpGetData = null, $sendResponseNow = false)
+    {
+        if ($httpGetData === null) {
+            $httpGetData = $_GET;
+        }
+
+        /**
+         * Handle any feed updates (sorry for the mess :P)
+         *
+         * This DOES NOT attempt to process a feed update. Feed updates
+         * SHOULD be validated/processed by an asynchronous process so as
+         * to avoid holding up responses to the Hub.
+         */
+        $contentType = $this->_getHeader('Content-Type');
+        if (strtolower($_SERVER['REQUEST_METHOD']) == 'post'
+            && $this->_hasValidVerifyToken(null, false)
+            && (stripos($contentType, 'application/atom+xml') === 0
+                || stripos($contentType, 'application/rss+xml') === 0
+                || stripos($contentType, 'application/xml') === 0
+                || stripos($contentType, 'text/xml') === 0
+                || stripos($contentType, 'application/rdf+xml') === 0)
+        ) {
+            $this->setFeedUpdate($this->_getRawBody());
+            $this->getHttpResponse()->setHeader('X-Hub-On-Behalf-Of', $this->getSubscriberCount());
+        /**
+         * Handle any (un)subscribe confirmation requests
+         */
+        } elseif ($this->isValidHubVerification($httpGetData)) {
+            $this->getHttpResponse()->setContent($httpGetData['hub_challenge']);
+
+            switch (strtolower($httpGetData['hub_mode'])) {
+                case 'subscribe':
+                    $data = $this->currentSubscriptionData;
+                    $data['subscription_state'] = PubSubHubbub\PubSubHubbub::SUBSCRIPTION_VERIFIED;
+                    if (isset($httpGetData['hub_lease_seconds'])) {
+                        $data['lease_seconds'] = $httpGetData['hub_lease_seconds'];
+                    }
+                    $this->getStorage()->setSubscription($data);
+                    break;
+                case 'unsubscribe':
+                    $verifyTokenKey = $this->_detectVerifyTokenKey($httpGetData);
+                    $this->getStorage()->deleteSubscription($verifyTokenKey);
+                    break;
+                default:
+                    throw new Exception\RuntimeException(sprintf(
+                        'Invalid hub_mode ("%s") provided',
+                        $httpGetData['hub_mode']
+                    ));
+            }
+        /**
+         * Hey, C'mon! We tried everything else!
+         */
+        } else {
+            $this->getHttpResponse()->setStatusCode(404);
+        }
+
+        if ($sendResponseNow) {
+            $this->sendResponse();
+        }
+    }
+
+    /**
+     * Checks validity of the request simply by making a quick pass and
+     * confirming the presence of all REQUIRED parameters.
+     *
+     * @param  array $httpGetData
+     * @return bool
+     */
+    public function isValidHubVerification(array $httpGetData)
+    {
+        /**
+         * As per the specification, the hub.verify_token is OPTIONAL. This
+         * implementation of Pubsubhubbub considers it REQUIRED and will
+         * always send a hub.verify_token parameter to be echoed back
+         * by the Hub Server. Therefore, its absence is considered invalid.
+         */
+        if (strtolower($_SERVER['REQUEST_METHOD']) !== 'get') {
+            return false;
+        }
+        $required = array(
+            'hub_mode',
+            'hub_topic',
+            'hub_challenge',
+            'hub_verify_token',
+        );
+        foreach ($required as $key) {
+            if (!array_key_exists($key, $httpGetData)) {
+                return false;
+            }
+        }
+        if ($httpGetData['hub_mode'] !== 'subscribe'
+            && $httpGetData['hub_mode'] !== 'unsubscribe'
+        ) {
+            return false;
+        }
+        if ($httpGetData['hub_mode'] == 'subscribe'
+            && !array_key_exists('hub_lease_seconds', $httpGetData)
+        ) {
+            return false;
+        }
+        if (!Uri::factory($httpGetData['hub_topic'])->isValid()) {
+            return false;
+        }
+
+        /**
+         * Attempt to retrieve any Verification Token Key attached to Callback
+         * URL's path by our Subscriber implementation
+         */
+        if (!$this->_hasValidVerifyToken($httpGetData)) {
+            return false;
+        }
+        return true;
+    }
+
+    /**
+     * Sets a newly received feed (Atom/RSS) sent by a Hub as an update to a
+     * Topic we've subscribed to.
+     *
+     * @param  string $feed
+     * @return \Zend\Feed\PubSubHubbub\Subscriber\Callback
+     */
+    public function setFeedUpdate($feed)
+    {
+        $this->feedUpdate = $feed;
+        return $this;
+    }
+
+    /**
+     * Check if any newly received feed (Atom/RSS) update was received
+     *
+     * @return bool
+     */
+    public function hasFeedUpdate()
+    {
+        if ($this->feedUpdate === null) {
+            return false;
+        }
+        return true;
+    }
+
+    /**
+     * Gets a newly received feed (Atom/RSS) sent by a Hub as an update to a
+     * Topic we've subscribed to.
+     *
+     * @return string
+     */
+    public function getFeedUpdate()
+    {
+        return $this->feedUpdate;
+    }
+
+    /**
+     * Check for a valid verify_token. By default attempts to compare values
+     * with that sent from Hub, otherwise merely ascertains its existence.
+     *
+     * @param  array $httpGetData
+     * @param  bool $checkValue
+     * @return bool
+     */
+    protected function _hasValidVerifyToken(array $httpGetData = null, $checkValue = true)
+    {
+        $verifyTokenKey = $this->_detectVerifyTokenKey($httpGetData);
+        if (empty($verifyTokenKey)) {
+            return false;
+        }
+        $verifyTokenExists = $this->getStorage()->hasSubscription($verifyTokenKey);
+        if (!$verifyTokenExists) {
+            return false;
+        }
+        if ($checkValue) {
+            $data = $this->getStorage()->getSubscription($verifyTokenKey);
+            $verifyToken = $data['verify_token'];
+            if ($verifyToken !== hash('sha256', $httpGetData['hub_verify_token'])) {
+                return false;
+            }
+            $this->currentSubscriptionData = $data;
+            return true;
+        }
+        return true;
+    }
+
+    /**
+     * Attempt to detect the verification token key. This would be passed in
+     * the Callback URL (which we are handling with this class!) as a URI
+     * path part (the last part by convention).
+     *
+     * @param  null|array $httpGetData
+     * @return false|string
+     */
+    protected function _detectVerifyTokenKey(array $httpGetData = null)
+    {
+        /**
+         * Available when sub keys encoding in Callback URL path
+         */
+        if (isset($this->subscriptionKey)) {
+            return $this->subscriptionKey;
+        }
+
+        /**
+         * Available only if allowed by PuSH 0.2 Hubs
+         */
+        if (is_array($httpGetData)
+            && isset($httpGetData['xhub_subscription'])
+        ) {
+            return $httpGetData['xhub_subscription'];
+        }
+
+        /**
+         * Available (possibly) if corrupted in transit and not part of $_GET
+         */
+        $params = $this->_parseQueryString();
+        if (isset($params['xhub.subscription'])) {
+            return rawurldecode($params['xhub.subscription']);
+        }
+
+        return false;
+    }
+
+    /**
+     * Build an array of Query String parameters.
+     * This bypasses $_GET which munges parameter names and cannot accept
+     * multiple parameters with the same key.
+     *
+     * @return array|void
+     */
+    protected function _parseQueryString()
+    {
+        $params      = array();
+        $queryString = '';
+        if (isset($_SERVER['QUERY_STRING'])) {
+            $queryString = $_SERVER['QUERY_STRING'];
+        }
+        if (empty($queryString)) {
+            return array();
+        }
+        $parts = explode('&', $queryString);
+        foreach ($parts as $kvpair) {
+            $pair  = explode('=', $kvpair);
+            $key   = rawurldecode($pair[0]);
+            $value = rawurldecode($pair[1]);
+            if (isset($params[$key])) {
+                if (is_array($params[$key])) {
+                    $params[$key][] = $value;
+                } else {
+                    $params[$key] = array($params[$key], $value);
+                }
+            } else {
+                $params[$key] = $value;
+            }
+        }
+        return $params;
+    }
+}

3rdparty/ZendFeed/PubSubHubbub/Version.php

@@ -0,0 +1,15 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\PubSubHubbub;
+
+abstract class Version
+{
+    const VERSION = '2';
+}

3rdparty/ZendFeed/README.md

@@ -0,0 +1,15 @@
+Feed Component from ZF2
+=======================
+
+This is the Feed component for ZF2.
+
+- File issues at https://github.com/zendframework/zf2/issues
+- Create pull requests against https://github.com/zendframework/zf2
+- Documentation is at http://framework.zend.com/docs
+
+LICENSE
+-------
+
+The files in this archive are released under the [Zend Framework
+license](http://framework.zend.com/license), which is a 3-clause BSD license.
+

3rdparty/ZendFeed/Reader/AbstractEntry.php

@@ -0,0 +1,224 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader;
+
+use DOMDocument;
+use DOMElement;
+use DOMXPath;
+
+abstract class AbstractEntry
+{
+    /**
+     * Feed entry data
+     *
+     * @var array
+     */
+    protected $data = array();
+
+    /**
+     * DOM document object
+     *
+     * @var DOMDocument
+     */
+    protected $domDocument = null;
+
+    /**
+     * Entry instance
+     *
+     * @var DOMElement
+     */
+    protected $entry = null;
+
+    /**
+     * Pointer to the current entry
+     *
+     * @var int
+     */
+    protected $entryKey = 0;
+
+    /**
+     * XPath object
+     *
+     * @var DOMXPath
+     */
+    protected $xpath = null;
+
+    /**
+     * Registered extensions
+     *
+     * @var array
+     */
+    protected $extensions = array();
+
+    /**
+     * Constructor
+     *
+     * @param  DOMElement $entry
+     * @param  int $entryKey
+     * @param  null|string $type
+     */
+    public function __construct(DOMElement $entry, $entryKey, $type = null)
+    {
+        $this->entry       = $entry;
+        $this->entryKey    = $entryKey;
+        $this->domDocument = $entry->ownerDocument;
+        if ($type !== null) {
+            $this->data['type'] = $type;
+        } else {
+            $this->data['type'] = Reader::detectType($entry);
+        }
+        $this->_loadExtensions();
+    }
+
+    /**
+     * Get the DOM
+     *
+     * @return DOMDocument
+     */
+    public function getDomDocument()
+    {
+        return $this->domDocument;
+    }
+
+    /**
+     * Get the entry element
+     *
+     * @return DOMElement
+     */
+    public function getElement()
+    {
+        return $this->entry;
+    }
+
+    /**
+     * Get the Entry's encoding
+     *
+     * @return string
+     */
+    public function getEncoding()
+    {
+        $assumed = $this->getDomDocument()->encoding;
+        if (empty($assumed)) {
+            $assumed = 'UTF-8';
+        }
+        return $assumed;
+    }
+
+    /**
+     * Get entry as xml
+     *
+     * @return string
+     */
+    public function saveXml()
+    {
+        $dom = new DOMDocument('1.0', $this->getEncoding());
+        $entry = $dom->importNode($this->getElement(), true);
+        $dom->appendChild($entry);
+        return $dom->saveXml();
+    }
+
+    /**
+     * Get the entry type
+     *
+     * @return string
+     */
+    public function getType()
+    {
+        return $this->data['type'];
+    }
+
+    /**
+     * Get the XPath query object
+     *
+     * @return DOMXPath
+     */
+    public function getXpath()
+    {
+        if (!$this->xpath) {
+            $this->setXpath(new DOMXPath($this->getDomDocument()));
+        }
+        return $this->xpath;
+    }
+
+    /**
+     * Set the XPath query
+     *
+     * @param  DOMXPath $xpath
+     * @return \Zend\Feed\Reader\AbstractEntry
+     */
+    public function setXpath(DOMXPath $xpath)
+    {
+        $this->xpath = $xpath;
+        return $this;
+    }
+
+    /**
+     * Get registered extensions
+     *
+     * @return array
+     */
+    public function getExtensions()
+    {
+        return $this->extensions;
+    }
+
+    /**
+     * Return an Extension object with the matching name (postfixed with _Entry)
+     *
+     * @param string $name
+     * @return \Zend\Feed\Reader\Extension\AbstractEntry
+     */
+    public function getExtension($name)
+    {
+        if (array_key_exists($name . '\Entry', $this->extensions)) {
+            return $this->extensions[$name . '\Entry'];
+        }
+        return null;
+    }
+
+    /**
+     * Method overloading: call given method on first extension implementing it
+     *
+     * @param  string $method
+     * @param  array $args
+     * @return mixed
+     * @throws Exception\BadMethodCallException if no extensions implements the method
+     */
+    public function __call($method, $args)
+    {
+        foreach ($this->extensions as $extension) {
+            if (method_exists($extension, $method)) {
+                return call_user_func_array(array($extension, $method), $args);
+            }
+        }
+        throw new Exception\BadMethodCallException('Method: ' . $method
+            . 'does not exist and could not be located on a registered Extension');
+    }
+
+    /**
+     * Load extensions from Zend\Feed\Reader\Reader
+     *
+     * @return void
+     */
+    protected function _loadExtensions()
+    {
+        $all = Reader::getExtensions();
+        $feed = $all['entry'];
+        foreach ($feed as $extension) {
+            if (in_array($extension, $all['core'])) {
+                continue;
+            }
+            $className = Reader::getPluginLoader()->getClassName($extension);
+            $this->extensions[$extension] = new $className(
+                $this->getElement(), $this->entryKey, $this->data['type']
+            );
+        }
+    }
+}

3rdparty/ZendFeed/Reader/AbstractFeed.php

@@ -0,0 +1,300 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader;
+
+use DOMDocument;
+use DOMElement;
+use DOMXPath;
+
+abstract class AbstractFeed implements Feed\FeedInterface
+{
+    /**
+     * Parsed feed data
+     *
+     * @var array
+     */
+    protected $data = array();
+
+    /**
+     * Parsed feed data in the shape of a DOMDocument
+     *
+     * @var DOMDocument
+     */
+    protected $domDocument = null;
+
+    /**
+     * An array of parsed feed entries
+     *
+     * @var array
+     */
+    protected $entries = array();
+
+    /**
+     * A pointer for the iterator to keep track of the entries array
+     *
+     * @var int
+     */
+    protected $entriesKey = 0;
+
+    /**
+     * The base XPath query used to retrieve feed data
+     *
+     * @var DOMXPath
+     */
+    protected $xpath = null;
+
+    /**
+     * Array of loaded extensions
+     *
+     * @var array
+     */
+    protected $extensions = array();
+
+    /**
+     * Original Source URI (set if imported from a URI)
+     *
+     * @var string
+     */
+    protected $originalSourceUri = null;
+
+    /**
+     * Constructor
+     *
+     * @param DomDocument $domDocument The DOM object for the feed's XML
+     * @param string $type Feed type
+     */
+    public function __construct(DOMDocument $domDocument, $type = null)
+    {
+        $this->domDocument = $domDocument;
+        $this->xpath = new DOMXPath($this->domDocument);
+
+        if ($type !== null) {
+            $this->data['type'] = $type;
+        } else {
+            $this->data['type'] = Reader::detectType($this->domDocument);
+        }
+        $this->registerNamespaces();
+        $this->indexEntries();
+        $this->loadExtensions();
+    }
+
+    /**
+     * Set an original source URI for the feed being parsed. This value
+     * is returned from getFeedLink() method if the feed does not carry
+     * a self-referencing URI.
+     *
+     * @param string $uri
+     */
+    public function setOriginalSourceUri($uri)
+    {
+        $this->originalSourceUri = $uri;
+    }
+
+    /**
+     * Get an original source URI for the feed being parsed. Returns null if
+     * unset or the feed was not imported from a URI.
+     *
+     * @return string|null
+     */
+    public function getOriginalSourceUri()
+    {
+        return $this->originalSourceUri;
+    }
+
+    /**
+     * Get the number of feed entries.
+     * Required by the Iterator interface.
+     *
+     * @return int
+     */
+    public function count()
+    {
+        return count($this->entries);
+    }
+
+    /**
+     * Return the current entry
+     *
+     * @return \Zend\Feed\Reader\AbstractEntry
+     */
+    public function current()
+    {
+        if (substr($this->getType(), 0, 3) == 'rss') {
+            $reader = new Entry\RSS($this->entries[$this->key()], $this->key(), $this->getType());
+        } else {
+            $reader = new Entry\Atom($this->entries[$this->key()], $this->key(), $this->getType());
+        }
+
+        $reader->setXpath($this->xpath);
+
+        return $reader;
+    }
+
+    /**
+     * Get the DOM
+     *
+     * @return DOMDocument
+     */
+    public function getDomDocument()
+    {
+        return $this->domDocument;
+    }
+
+    /**
+     * Get the Feed's encoding
+     *
+     * @return string
+     */
+    public function getEncoding()
+    {
+        $assumed = $this->getDomDocument()->encoding;
+        if (empty($assumed)) {
+            $assumed = 'UTF-8';
+        }
+        return $assumed;
+    }
+
+    /**
+     * Get feed as xml
+     *
+     * @return string
+     */
+    public function saveXml()
+    {
+          return $this->getDomDocument()->saveXml();
+    }
+
+    /**
+     * Get the DOMElement representing the items/feed element
+     *
+     * @return DOMElement
+     */
+    public function getElement()
+    {
+          return $this->getDomDocument()->documentElement;
+    }
+
+    /**
+     * Get the DOMXPath object for this feed
+     *
+     * @return DOMXPath
+     */
+    public function getXpath()
+    {
+          return $this->xpath;
+    }
+
+    /**
+     * Get the feed type
+     *
+     * @return string
+     */
+    public function getType()
+    {
+        return $this->data['type'];
+    }
+
+    /**
+     * Return the current feed key
+     *
+     * @return int
+     */
+    public function key()
+    {
+        return $this->entriesKey;
+    }
+
+    /**
+     * Move the feed pointer forward
+     *
+     */
+    public function next()
+    {
+        ++$this->entriesKey;
+    }
+
+    /**
+     * Reset the pointer in the feed object
+     *
+     */
+    public function rewind()
+    {
+        $this->entriesKey = 0;
+    }
+
+    /**
+     * Check to see if the iterator is still valid
+     *
+     * @return bool
+     */
+    public function valid()
+    {
+        return 0 <= $this->entriesKey && $this->entriesKey < $this->count();
+    }
+
+    public function getExtensions()
+    {
+        return $this->extensions;
+    }
+
+    public function __call($method, $args)
+    {
+        foreach ($this->extensions as $extension) {
+            if (method_exists($extension, $method)) {
+                return call_user_func_array(array($extension, $method), $args);
+            }
+        }
+        throw new Exception\BadMethodCallException('Method: ' . $method
+        . 'does not exist and could not be located on a registered Extension');
+    }
+
+    /**
+     * Return an Extension object with the matching name (postfixed with _Feed)
+     *
+     * @param string $name
+     * @return \Zend\Feed\Reader\Extension\AbstractFeed
+     */
+    public function getExtension($name)
+    {
+        if (array_key_exists($name . '\Feed', $this->extensions)) {
+            return $this->extensions[$name . '\Feed'];
+        }
+        return null;
+    }
+
+    protected function loadExtensions()
+    {
+        $all     = Reader::getExtensions();
+        $manager = Reader::getExtensionManager();
+        $feed    = $all['feed'];
+        foreach ($feed as $extension) {
+            if (in_array($extension, $all['core'])) {
+                continue;
+            }
+            $plugin = $manager->get($extension);
+            $plugin->setDomDocument($this->getDomDocument());
+            $plugin->setType($this->data['type']);
+            $plugin->setXpath($this->xpath);
+            $this->extensions[$extension] = $plugin;
+        }
+    }
+
+    /**
+     * Read all entries to the internal entries array
+     *
+     */
+    abstract protected function indexEntries();
+
+    /**
+     * Register the default namespaces for the current feed format
+     *
+     */
+    abstract protected function registerNamespaces();
+}

3rdparty/ZendFeed/Reader/Collection.php

@@ -0,0 +1,17 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader;
+
+use ArrayObject;
+
+class Collection extends ArrayObject
+{
+
+}

3rdparty/ZendFeed/Reader/Collection/AbstractCollection.php

@@ -0,0 +1,27 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Collection;
+
+use ArrayObject;
+
+abstract class AbstractCollection extends ArrayObject
+{
+
+    /**
+     * Return a simple array of the most relevant slice of
+     * the collection values. For example, feed categories contain
+     * the category name, domain/URI, and other data. This method would
+     * merely return the most useful data - i.e. the category names.
+     *
+     * @return array
+     */
+    abstract public function getValues();
+
+}

3rdparty/ZendFeed/Reader/Collection/Author.php

@@ -0,0 +1,29 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Collection;
+
+class Author extends AbstractCollection
+{
+
+    /**
+     * Return a simple array of the most relevant slice of
+     * the author values, i.e. all author names.
+     *
+     * @return array
+     */
+    public function getValues()
+    {
+        $authors = array();
+        foreach ($this->getIterator() as $element) {
+            $authors[] = $element['name'];
+        }
+        return array_unique($authors);
+    }
+}

3rdparty/ZendFeed/Reader/Collection/Category.php

@@ -0,0 +1,35 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Collection;
+
+class Category extends AbstractCollection
+{
+
+    /**
+     * Return a simple array of the most relevant slice of
+     * the collection values. For example, feed categories contain
+     * the category name, domain/URI, and other data. This method would
+     * merely return the most useful data - i.e. the category names.
+     *
+     * @return array
+     */
+    public function getValues()
+    {
+        $categories = array();
+        foreach ($this->getIterator() as $element) {
+            if (isset($element['label']) && !empty($element['label'])) {
+                $categories[] = $element['label'];
+            } else {
+                $categories[] = $element['term'];
+            }
+        }
+        return array_unique($categories);
+    }
+}

3rdparty/ZendFeed/Reader/Collection/Collection.php

@@ -0,0 +1,17 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Collection;
+
+use ArrayObject;
+
+class Collection extends ArrayObject
+{
+
+}

3rdparty/ZendFeed/Reader/Entry/AbstractEntry.php

@@ -0,0 +1,230 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Entry;
+
+use DOMDocument;
+use DOMElement;
+use DOMXPath;
+use Zend\Feed\Reader;
+use Zend\Feed\Reader\Exception;
+
+abstract class AbstractEntry
+{
+    /**
+     * Feed entry data
+     *
+     * @var array
+     */
+    protected $data = array();
+
+    /**
+     * DOM document object
+     *
+     * @var DOMDocument
+     */
+    protected $domDocument = null;
+
+    /**
+     * Entry instance
+     *
+     * @var DOMElement
+     */
+    protected $entry = null;
+
+    /**
+     * Pointer to the current entry
+     *
+     * @var int
+     */
+    protected $entryKey = 0;
+
+    /**
+     * XPath object
+     *
+     * @var DOMXPath
+     */
+    protected $xpath = null;
+
+    /**
+     * Registered extensions
+     *
+     * @var array
+     */
+    protected $extensions = array();
+
+    /**
+     * Constructor
+     *
+     * @param  DOMElement $entry
+     * @param  int $entryKey
+     * @param  string $type
+     */
+    public function __construct(DOMElement $entry, $entryKey, $type = null)
+    {
+        $this->entry       = $entry;
+        $this->entryKey    = $entryKey;
+        $this->domDocument = $entry->ownerDocument;
+        if ($type !== null) {
+            $this->data['type'] = $type;
+        } elseif ($this->domDocument !== null) {
+            $this->data['type'] = Reader\Reader::detectType($this->domDocument);
+        } else {
+            $this->data['type'] = Reader\Reader::TYPE_ANY;
+        }
+        $this->loadExtensions();
+    }
+
+    /**
+     * Get the DOM
+     *
+     * @return DOMDocument
+     */
+    public function getDomDocument()
+    {
+        return $this->domDocument;
+    }
+
+    /**
+     * Get the entry element
+     *
+     * @return DOMElement
+     */
+    public function getElement()
+    {
+        return $this->entry;
+    }
+
+    /**
+     * Get the Entry's encoding
+     *
+     * @return string
+     */
+    public function getEncoding()
+    {
+        $assumed = $this->getDomDocument()->encoding;
+        if (empty($assumed)) {
+            $assumed = 'UTF-8';
+        }
+        return $assumed;
+    }
+
+    /**
+     * Get entry as xml
+     *
+     * @return string
+     */
+    public function saveXml()
+    {
+        $dom = new DOMDocument('1.0', $this->getEncoding());
+        $entry = $dom->importNode($this->getElement(), true);
+        $dom->appendChild($entry);
+        return $dom->saveXml();
+    }
+
+    /**
+     * Get the entry type
+     *
+     * @return string
+     */
+    public function getType()
+    {
+        return $this->data['type'];
+    }
+
+    /**
+     * Get the XPath query object
+     *
+     * @return DOMXPath
+     */
+    public function getXpath()
+    {
+        if (!$this->xpath) {
+            $this->setXpath(new DOMXPath($this->getDomDocument()));
+        }
+        return $this->xpath;
+    }
+
+    /**
+     * Set the XPath query
+     *
+     * @param  DOMXPath $xpath
+     * @return AbstractEntry
+     */
+    public function setXpath(DOMXPath $xpath)
+    {
+        $this->xpath = $xpath;
+        return $this;
+    }
+
+    /**
+     * Get registered extensions
+     *
+     * @return array
+     */
+    public function getExtensions()
+    {
+        return $this->extensions;
+    }
+
+    /**
+     * Return an Extension object with the matching name (postfixed with _Entry)
+     *
+     * @param string $name
+     * @return Reader\Extension\AbstractEntry
+     */
+    public function getExtension($name)
+    {
+        if (array_key_exists($name . '\\Entry', $this->extensions)) {
+            return $this->extensions[$name . '\\Entry'];
+        }
+        return null;
+    }
+
+    /**
+     * Method overloading: call given method on first extension implementing it
+     *
+     * @param  string $method
+     * @param  array $args
+     * @return mixed
+     * @throws Exception\RuntimeException if no extensions implements the method
+     */
+    public function __call($method, $args)
+    {
+        foreach ($this->extensions as $extension) {
+            if (method_exists($extension, $method)) {
+                return call_user_func_array(array($extension, $method), $args);
+            }
+        }
+        throw new Exception\RuntimeException('Method: ' . $method
+            . ' does not exist and could not be located on a registered Extension');
+    }
+
+    /**
+     * Load extensions from Zend\Feed\Reader\Reader
+     *
+     * @return void
+     */
+    protected function loadExtensions()
+    {
+        $all     = Reader\Reader::getExtensions();
+        $manager = Reader\Reader::getExtensionManager();
+        $feed    = $all['entry'];
+        foreach ($feed as $extension) {
+            if (in_array($extension, $all['core'])) {
+                continue;
+            }
+            $plugin = $manager->get($extension);
+            $plugin->setEntryElement($this->getElement());
+            $plugin->setEntryKey($this->entryKey);
+            $plugin->setType($this->data['type']);
+            $this->extensions[$extension] = $plugin;
+        }
+    }
+}

3rdparty/ZendFeed/Reader/Entry/Atom.php

@@ -0,0 +1,370 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Entry;
+
+use DOMElement;
+use DOMXPath;
+use Zend\Feed\Reader;
+
+class Atom extends AbstractEntry implements EntryInterface
+{
+    /**
+     * XPath query
+     *
+     * @var string
+     */
+    protected $xpathQuery = '';
+
+    /**
+     * Constructor
+     *
+     * @param  DOMElement $entry
+     * @param  int $entryKey
+     * @param  string $type
+     */
+    public function __construct(DOMElement $entry, $entryKey, $type = null)
+    {
+        parent::__construct($entry, $entryKey, $type);
+
+        // Everyone by now should know XPath indices start from 1 not 0
+        $this->xpathQuery = '//atom:entry[' . ($this->entryKey + 1) . ']';
+
+        $manager    = Reader\Reader::getExtensionManager();
+        $extensions = array('Atom\Entry', 'Thread\Entry', 'DublinCore\Entry');
+
+        foreach ($extensions as $name) {
+            $extension = $manager->get($name);
+            $extension->setEntryElement($entry);
+            $extension->setEntryKey($entryKey);
+            $extension->setType($type);
+            $this->extensions[$name] = $extension;
+        }
+    }
+
+    /**
+     * Get the specified author
+     *
+     * @param  int $index
+     * @return string|null
+     */
+    public function getAuthor($index = 0)
+    {
+        $authors = $this->getAuthors();
+
+        if (isset($authors[$index])) {
+            return $authors[$index];
+        }
+
+        return null;
+    }
+
+    /**
+     * Get an array with feed authors
+     *
+     * @return array
+     */
+    public function getAuthors()
+    {
+        if (array_key_exists('authors', $this->data)) {
+            return $this->data['authors'];
+        }
+
+        $people = $this->getExtension('Atom')->getAuthors();
+
+        $this->data['authors'] = $people;
+
+        return $this->data['authors'];
+    }
+
+    /**
+     * Get the entry content
+     *
+     * @return string
+     */
+    public function getContent()
+    {
+        if (array_key_exists('content', $this->data)) {
+            return $this->data['content'];
+        }
+
+        $content = $this->getExtension('Atom')->getContent();
+
+        $this->data['content'] = $content;
+
+        return $this->data['content'];
+    }
+
+    /**
+     * Get the entry creation date
+     *
+     * @return string
+     */
+    public function getDateCreated()
+    {
+        if (array_key_exists('datecreated', $this->data)) {
+            return $this->data['datecreated'];
+        }
+
+        $dateCreated = $this->getExtension('Atom')->getDateCreated();
+
+        $this->data['datecreated'] = $dateCreated;
+
+        return $this->data['datecreated'];
+    }
+
+    /**
+     * Get the entry modification date
+     *
+     * @return string
+     */
+    public function getDateModified()
+    {
+        if (array_key_exists('datemodified', $this->data)) {
+            return $this->data['datemodified'];
+        }
+
+        $dateModified = $this->getExtension('Atom')->getDateModified();
+
+        $this->data['datemodified'] = $dateModified;
+
+        return $this->data['datemodified'];
+    }
+
+    /**
+     * Get the entry description
+     *
+     * @return string
+     */
+    public function getDescription()
+    {
+        if (array_key_exists('description', $this->data)) {
+            return $this->data['description'];
+        }
+
+        $description = $this->getExtension('Atom')->getDescription();
+
+        $this->data['description'] = $description;
+
+        return $this->data['description'];
+    }
+
+    /**
+     * Get the entry enclosure
+     *
+     * @return string
+     */
+    public function getEnclosure()
+    {
+        if (array_key_exists('enclosure', $this->data)) {
+            return $this->data['enclosure'];
+        }
+
+        $enclosure = $this->getExtension('Atom')->getEnclosure();
+
+        $this->data['enclosure'] = $enclosure;
+
+        return $this->data['enclosure'];
+    }
+
+    /**
+     * Get the entry ID
+     *
+     * @return string
+     */
+    public function getId()
+    {
+        if (array_key_exists('id', $this->data)) {
+            return $this->data['id'];
+        }
+
+        $id = $this->getExtension('Atom')->getId();
+
+        $this->data['id'] = $id;
+
+        return $this->data['id'];
+    }
+
+    /**
+     * Get a specific link
+     *
+     * @param  int $index
+     * @return string
+     */
+    public function getLink($index = 0)
+    {
+        if (!array_key_exists('links', $this->data)) {
+            $this->getLinks();
+        }
+
+        if (isset($this->data['links'][$index])) {
+            return $this->data['links'][$index];
+        }
+
+        return null;
+    }
+
+    /**
+     * Get all links
+     *
+     * @return array
+     */
+    public function getLinks()
+    {
+        if (array_key_exists('links', $this->data)) {
+            return $this->data['links'];
+        }
+
+        $links = $this->getExtension('Atom')->getLinks();
+
+        $this->data['links'] = $links;
+
+        return $this->data['links'];
+    }
+
+    /**
+     * Get a permalink to the entry
+     *
+     * @return string
+     */
+    public function getPermalink()
+    {
+        return $this->getLink(0);
+    }
+
+    /**
+     * Get the entry title
+     *
+     * @return string
+     */
+    public function getTitle()
+    {
+        if (array_key_exists('title', $this->data)) {
+            return $this->data['title'];
+        }
+
+        $title = $this->getExtension('Atom')->getTitle();
+
+        $this->data['title'] = $title;
+
+        return $this->data['title'];
+    }
+
+    /**
+     * Get the number of comments/replies for current entry
+     *
+     * @return int
+     */
+    public function getCommentCount()
+    {
+        if (array_key_exists('commentcount', $this->data)) {
+            return $this->data['commentcount'];
+        }
+
+        $commentcount = $this->getExtension('Thread')->getCommentCount();
+
+        if (!$commentcount) {
+            $commentcount = $this->getExtension('Atom')->getCommentCount();
+        }
+
+        $this->data['commentcount'] = $commentcount;
+
+        return $this->data['commentcount'];
+    }
+
+    /**
+     * Returns a URI pointing to the HTML page where comments can be made on this entry
+     *
+     * @return string
+     */
+    public function getCommentLink()
+    {
+        if (array_key_exists('commentlink', $this->data)) {
+            return $this->data['commentlink'];
+        }
+
+        $commentlink = $this->getExtension('Atom')->getCommentLink();
+
+        $this->data['commentlink'] = $commentlink;
+
+        return $this->data['commentlink'];
+    }
+
+    /**
+     * Returns a URI pointing to a feed of all comments for this entry
+     *
+     * @return string
+     */
+    public function getCommentFeedLink()
+    {
+        if (array_key_exists('commentfeedlink', $this->data)) {
+            return $this->data['commentfeedlink'];
+        }
+
+        $commentfeedlink = $this->getExtension('Atom')->getCommentFeedLink();
+
+        $this->data['commentfeedlink'] = $commentfeedlink;
+
+        return $this->data['commentfeedlink'];
+    }
+
+    /**
+     * Get category data as a Reader\Reader_Collection_Category object
+     *
+     * @return Reader\Collection\Category
+     */
+    public function getCategories()
+    {
+        if (array_key_exists('categories', $this->data)) {
+            return $this->data['categories'];
+        }
+
+        $categoryCollection = $this->getExtension('Atom')->getCategories();
+
+        if (count($categoryCollection) == 0) {
+            $categoryCollection = $this->getExtension('DublinCore')->getCategories();
+        }
+
+        $this->data['categories'] = $categoryCollection;
+
+        return $this->data['categories'];
+    }
+
+    /**
+     * Get source feed metadata from the entry
+     *
+     * @return Reader\Feed\Atom\Source|null
+     */
+    public function getSource()
+    {
+        if (array_key_exists('source', $this->data)) {
+            return $this->data['source'];
+        }
+
+        $source = $this->getExtension('Atom')->getSource();
+
+        $this->data['source'] = $source;
+
+        return $this->data['source'];
+    }
+
+    /**
+     * Set the XPath query (incl. on all Extensions)
+     *
+     * @param DOMXPath $xpath
+     * @return void
+     */
+    public function setXpath(DOMXPath $xpath)
+    {
+        parent::setXpath($xpath);
+        foreach ($this->extensions as $extension) {
+            $extension->setXpath($this->xpath);
+        }
+    }
+}

3rdparty/ZendFeed/Reader/Entry/EntryInterface.php

@@ -0,0 +1,129 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Entry;
+
+use Zend\Feed\Reader\Collection\Category;
+
+interface EntryInterface
+{
+    /**
+     * Get the specified author
+     *
+     * @param  int $index
+     * @return string|null
+     */
+    public function getAuthor($index = 0);
+
+    /**
+     * Get an array with feed authors
+     *
+     * @return array
+     */
+    public function getAuthors();
+
+    /**
+     * Get the entry content
+     *
+     * @return string
+     */
+    public function getContent();
+
+    /**
+     * Get the entry creation date
+     *
+     * @return string
+     */
+    public function getDateCreated();
+
+    /**
+     * Get the entry modification date
+     *
+     * @return string
+     */
+    public function getDateModified();
+
+    /**
+     * Get the entry description
+     *
+     * @return string
+     */
+    public function getDescription();
+
+    /**
+     * Get the entry enclosure
+     *
+     * @return \stdClass
+     */
+    public function getEnclosure();
+
+    /**
+     * Get the entry ID
+     *
+     * @return string
+     */
+    public function getId();
+
+    /**
+     * Get a specific link
+     *
+     * @param  int $index
+     * @return string
+     */
+    public function getLink($index = 0);
+
+    /**
+     * Get all links
+     *
+     * @return array
+     */
+    public function getLinks();
+
+    /**
+     * Get a permalink to the entry
+     *
+     * @return string
+     */
+    public function getPermalink();
+
+    /**
+     * Get the entry title
+     *
+     * @return string
+     */
+    public function getTitle();
+
+    /**
+     * Get the number of comments/replies for current entry
+     *
+     * @return int
+     */
+    public function getCommentCount();
+
+    /**
+     * Returns a URI pointing to the HTML page where comments can be made on this entry
+     *
+     * @return string
+     */
+    public function getCommentLink();
+
+    /**
+     * Returns a URI pointing to a feed of all comments for this entry
+     *
+     * @return string
+     */
+    public function getCommentFeedLink();
+
+    /**
+     * Get all categories
+     *
+     * @return Category
+     */
+    public function getCategories();
+}

3rdparty/ZendFeed/Reader/Entry/Rss.php

@@ -0,0 +1,599 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Entry;
+
+use DateTime;
+use DOMElement;
+use DOMXPath;
+use Zend\Feed\Reader;
+use Zend\Feed\Reader\Exception;
+
+class Rss extends AbstractEntry implements EntryInterface
+{
+
+    /**
+     * XPath query for RDF
+     *
+     * @var string
+     */
+    protected $xpathQueryRdf = '';
+
+    /**
+     * XPath query for RSS
+     *
+     * @var string
+     */
+    protected $xpathQueryRss = '';
+
+    /**
+     * Constructor
+     *
+     * @param  DOMElement $entry
+     * @param  string $entryKey
+     * @param  string $type
+     */
+    public function __construct(DOMElement $entry, $entryKey, $type = null)
+    {
+        parent::__construct($entry, $entryKey, $type);
+        $this->xpathQueryRss = '//item[' . ($this->entryKey+1) . ']';
+        $this->xpathQueryRdf = '//rss:item[' . ($this->entryKey+1) . ']';
+
+        $manager    = Reader\Reader::getExtensionManager();
+        $extensions = array(
+            'DublinCore\Entry',
+            'Content\Entry',
+            'Atom\Entry',
+            'WellFormedWeb\Entry',
+            'Slash\Entry',
+            'Thread\Entry',
+        );
+        foreach ($extensions as $name) {
+            $extension = $manager->get($name);
+            $extension->setEntryElement($entry);
+            $extension->setEntryKey($entryKey);
+            $extension->setType($type);
+            $this->extensions[$name] = $extension;
+        }
+    }
+
+    /**
+     * Get an author entry
+     *
+     * @param int $index
+     * @return string
+     */
+    public function getAuthor($index = 0)
+    {
+        $authors = $this->getAuthors();
+
+        if (isset($authors[$index])) {
+            return $authors[$index];
+        }
+
+        return null;
+    }
+
+    /**
+     * Get an array with feed authors
+     *
+     * @return array
+     */
+    public function getAuthors()
+    {
+        if (array_key_exists('authors', $this->data)) {
+            return $this->data['authors'];
+        }
+
+        $authors = array();
+        $authorsDc = $this->getExtension('DublinCore')->getAuthors();
+        if (!empty($authorsDc)) {
+            foreach ($authorsDc as $author) {
+                $authors[] = array(
+                    'name' => $author['name']
+                );
+            }
+        }
+
+        if ($this->getType() !== Reader\Reader::TYPE_RSS_10
+        && $this->getType() !== Reader\Reader::TYPE_RSS_090) {
+            $list = $this->xpath->query($this->xpathQueryRss . '//author');
+        } else {
+            $list = $this->xpath->query($this->xpathQueryRdf . '//rss:author');
+        }
+        if ($list->length) {
+            foreach ($list as $author) {
+                $string = trim($author->nodeValue);
+                $email = null;
+                $name = null;
+                $data = array();
+                // Pretty rough parsing - but it's a catchall
+                if (preg_match("/^.*@[^ ]*/", $string, $matches)) {
+                    $data['email'] = trim($matches[0]);
+                    if (preg_match("/\((.*)\)$/", $string, $matches)) {
+                        $data['name'] = $matches[1];
+                    }
+                    $authors[] = $data;
+                }
+            }
+        }
+
+        if (count($authors) == 0) {
+            $authors = $this->getExtension('Atom')->getAuthors();
+        } else {
+            $authors = new Reader\Collection\Author(
+                Reader\Reader::arrayUnique($authors)
+            );
+        }
+
+        if (count($authors) == 0) {
+            $authors = null;
+        }
+
+        $this->data['authors'] = $authors;
+
+        return $this->data['authors'];
+    }
+
+    /**
+     * Get the entry content
+     *
+     * @return string
+     */
+    public function getContent()
+    {
+        if (array_key_exists('content', $this->data)) {
+            return $this->data['content'];
+        }
+
+        $content = $this->getExtension('Content')->getContent();
+
+        if (!$content) {
+            $content = $this->getDescription();
+        }
+
+        if (empty($content)) {
+            $content = $this->getExtension('Atom')->getContent();
+        }
+
+        $this->data['content'] = $content;
+
+        return $this->data['content'];
+    }
+
+    /**
+     * Get the entry's date of creation
+     *
+     * @return string
+     */
+    public function getDateCreated()
+    {
+        return $this->getDateModified();
+    }
+
+    /**
+     * Get the entry's date of modification
+     *
+     * @throws Exception\RuntimeException
+     * @return string
+     */
+    public function getDateModified()
+    {
+        if (array_key_exists('datemodified', $this->data)) {
+            return $this->data['datemodified'];
+        }
+
+        $dateModified = null;
+        $date = null;
+
+        if ($this->getType() !== Reader\Reader::TYPE_RSS_10
+            && $this->getType() !== Reader\Reader::TYPE_RSS_090
+        ) {
+            $dateModified = $this->xpath->evaluate('string(' . $this->xpathQueryRss . '/pubDate)');
+            if ($dateModified) {
+                $dateModifiedParsed = strtotime($dateModified);
+                if ($dateModifiedParsed) {
+                    $date = new DateTime('@' . $dateModifiedParsed);
+                } else {
+                    $dateStandards = array(DateTime::RSS, DateTime::RFC822,
+                                           DateTime::RFC2822, null);
+                    foreach ($dateStandards as $standard) {
+                        try {
+                            $date = date_create_from_format($standard, $dateModified);
+                            break;
+                        } catch (\Exception $e) {
+                            if ($standard == null) {
+                                throw new Exception\RuntimeException(
+                                    'Could not load date due to unrecognised'
+                                    .' format (should follow RFC 822 or 2822):'
+                                    . $e->getMessage(),
+                                    0, $e
+                                );
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
+        if (!$date) {
+            $date = $this->getExtension('DublinCore')->getDate();
+        }
+
+        if (!$date) {
+            $date = $this->getExtension('Atom')->getDateModified();
+        }
+
+        if (!$date) {
+            $date = null;
+        }
+
+        $this->data['datemodified'] = $date;
+
+        return $this->data['datemodified'];
+    }
+
+    /**
+     * Get the entry description
+     *
+     * @return string
+     */
+    public function getDescription()
+    {
+        if (array_key_exists('description', $this->data)) {
+            return $this->data['description'];
+        }
+
+        $description = null;
+
+        if ($this->getType() !== Reader\Reader::TYPE_RSS_10
+            && $this->getType() !== Reader\Reader::TYPE_RSS_090
+        ) {
+            $description = $this->xpath->evaluate('string(' . $this->xpathQueryRss . '/description)');
+        } else {
+            $description = $this->xpath->evaluate('string(' . $this->xpathQueryRdf . '/rss:description)');
+        }
+
+        if (!$description) {
+            $description = $this->getExtension('DublinCore')->getDescription();
+        }
+
+        if (empty($description)) {
+            $description = $this->getExtension('Atom')->getDescription();
+        }
+
+        if (!$description) {
+            $description = null;
+        }
+
+        $this->data['description'] = $description;
+
+        return $this->data['description'];
+    }
+
+    /**
+     * Get the entry enclosure
+     * @return string
+     */
+    public function getEnclosure()
+    {
+        if (array_key_exists('enclosure', $this->data)) {
+            return $this->data['enclosure'];
+        }
+
+        $enclosure = null;
+
+        if ($this->getType() == Reader\Reader::TYPE_RSS_20) {
+            $nodeList = $this->xpath->query($this->xpathQueryRss . '/enclosure');
+
+            if ($nodeList->length > 0) {
+                $enclosure = new \stdClass();
+                $enclosure->url    = $nodeList->item(0)->getAttribute('url');
+                $enclosure->length = $nodeList->item(0)->getAttribute('length');
+                $enclosure->type   = $nodeList->item(0)->getAttribute('type');
+            }
+        }
+
+        if (!$enclosure) {
+            $enclosure = $this->getExtension('Atom')->getEnclosure();
+        }
+
+        $this->data['enclosure'] = $enclosure;
+
+        return $this->data['enclosure'];
+    }
+
+    /**
+     * Get the entry ID
+     *
+     * @return string
+     */
+    public function getId()
+    {
+        if (array_key_exists('id', $this->data)) {
+            return $this->data['id'];
+        }
+
+        $id = null;
+
+        if ($this->getType() !== Reader\Reader::TYPE_RSS_10
+            && $this->getType() !== Reader\Reader::TYPE_RSS_090
+        ) {
+            $id = $this->xpath->evaluate('string(' . $this->xpathQueryRss . '/guid)');
+        }
+
+        if (!$id) {
+            $id = $this->getExtension('DublinCore')->getId();
+        }
+
+        if (empty($id)) {
+            $id = $this->getExtension('Atom')->getId();
+        }
+
+        if (!$id) {
+            if ($this->getPermalink()) {
+                $id = $this->getPermalink();
+            } elseif ($this->getTitle()) {
+                $id = $this->getTitle();
+            } else {
+                $id = null;
+            }
+        }
+
+        $this->data['id'] = $id;
+
+        return $this->data['id'];
+    }
+
+    /**
+     * Get a specific link
+     *
+     * @param  int $index
+     * @return string
+     */
+    public function getLink($index = 0)
+    {
+        if (!array_key_exists('links', $this->data)) {
+            $this->getLinks();
+        }
+
+        if (isset($this->data['links'][$index])) {
+            return $this->data['links'][$index];
+        }
+
+        return null;
+    }
+
+    /**
+     * Get all links
+     *
+     * @return array
+     */
+    public function getLinks()
+    {
+        if (array_key_exists('links', $this->data)) {
+            return $this->data['links'];
+        }
+
+        $links = array();
+
+        if ($this->getType() !== Reader\Reader::TYPE_RSS_10 &&
+            $this->getType() !== Reader\Reader::TYPE_RSS_090) {
+            $list = $this->xpath->query($this->xpathQueryRss . '//link');
+        } else {
+            $list = $this->xpath->query($this->xpathQueryRdf . '//rss:link');
+        }
+
+        if (!$list->length) {
+            $links = $this->getExtension('Atom')->getLinks();
+        } else {
+            foreach ($list as $link) {
+                $links[] = $link->nodeValue;
+            }
+        }
+
+        $this->data['links'] = $links;
+
+        return $this->data['links'];
+    }
+
+    /**
+     * Get all categories
+     *
+     * @return Reader\Collection\Category
+     */
+    public function getCategories()
+    {
+        if (array_key_exists('categories', $this->data)) {
+            return $this->data['categories'];
+        }
+
+        if ($this->getType() !== Reader\Reader::TYPE_RSS_10 &&
+            $this->getType() !== Reader\Reader::TYPE_RSS_090) {
+            $list = $this->xpath->query($this->xpathQueryRss . '//category');
+        } else {
+            $list = $this->xpath->query($this->xpathQueryRdf . '//rss:category');
+        }
+
+        if ($list->length) {
+            $categoryCollection = new Reader\Collection\Category;
+            foreach ($list as $category) {
+                $categoryCollection[] = array(
+                    'term' => $category->nodeValue,
+                    'scheme' => $category->getAttribute('domain'),
+                    'label' => $category->nodeValue,
+                );
+            }
+        } else {
+            $categoryCollection = $this->getExtension('DublinCore')->getCategories();
+        }
+
+        if (count($categoryCollection) == 0) {
+            $categoryCollection = $this->getExtension('Atom')->getCategories();
+        }
+
+        $this->data['categories'] = $categoryCollection;
+
+        return $this->data['categories'];
+    }
+
+    /**
+     * Get a permalink to the entry
+     *
+     * @return string
+     */
+    public function getPermalink()
+    {
+        return $this->getLink(0);
+    }
+
+    /**
+     * Get the entry title
+     *
+     * @return string
+     */
+    public function getTitle()
+    {
+        if (array_key_exists('title', $this->data)) {
+            return $this->data['title'];
+        }
+
+        $title = null;
+
+        if ($this->getType() !== Reader\Reader::TYPE_RSS_10
+            && $this->getType() !== Reader\Reader::TYPE_RSS_090
+        ) {
+            $title = $this->xpath->evaluate('string(' . $this->xpathQueryRss . '/title)');
+        } else {
+            $title = $this->xpath->evaluate('string(' . $this->xpathQueryRdf . '/rss:title)');
+        }
+
+        if (!$title) {
+            $title = $this->getExtension('DublinCore')->getTitle();
+        }
+
+        if (!$title) {
+            $title = $this->getExtension('Atom')->getTitle();
+        }
+
+        if (!$title) {
+            $title = null;
+        }
+
+        $this->data['title'] = $title;
+
+        return $this->data['title'];
+    }
+
+    /**
+     * Get the number of comments/replies for current entry
+     *
+     * @return string|null
+     */
+    public function getCommentCount()
+    {
+        if (array_key_exists('commentcount', $this->data)) {
+            return $this->data['commentcount'];
+        }
+
+        $commentcount = $this->getExtension('Slash')->getCommentCount();
+
+        if (!$commentcount) {
+            $commentcount = $this->getExtension('Thread')->getCommentCount();
+        }
+
+        if (!$commentcount) {
+            $commentcount = $this->getExtension('Atom')->getCommentCount();
+        }
+
+        if (!$commentcount) {
+            $commentcount = null;
+        }
+
+        $this->data['commentcount'] = $commentcount;
+
+        return $this->data['commentcount'];
+    }
+
+    /**
+     * Returns a URI pointing to the HTML page where comments can be made on this entry
+     *
+     * @return string
+     */
+    public function getCommentLink()
+    {
+        if (array_key_exists('commentlink', $this->data)) {
+            return $this->data['commentlink'];
+        }
+
+        $commentlink = null;
+
+        if ($this->getType() !== Reader\Reader::TYPE_RSS_10
+            && $this->getType() !== Reader\Reader::TYPE_RSS_090
+        ) {
+            $commentlink = $this->xpath->evaluate('string(' . $this->xpathQueryRss . '/comments)');
+        }
+
+        if (!$commentlink) {
+            $commentlink = $this->getExtension('Atom')->getCommentLink();
+        }
+
+        if (!$commentlink) {
+            $commentlink = null;
+        }
+
+        $this->data['commentlink'] = $commentlink;
+
+        return $this->data['commentlink'];
+    }
+
+    /**
+     * Returns a URI pointing to a feed of all comments for this entry
+     *
+     * @return string
+     */
+    public function getCommentFeedLink()
+    {
+        if (array_key_exists('commentfeedlink', $this->data)) {
+            return $this->data['commentfeedlink'];
+        }
+
+        $commentfeedlink = $this->getExtension('WellFormedWeb')->getCommentFeedLink();
+
+        if (!$commentfeedlink) {
+            $commentfeedlink = $this->getExtension('Atom')->getCommentFeedLink('rss');
+        }
+
+        if (!$commentfeedlink) {
+            $commentfeedlink = $this->getExtension('Atom')->getCommentFeedLink('rdf');
+        }
+
+        if (!$commentfeedlink) {
+            $commentfeedlink = null;
+        }
+
+        $this->data['commentfeedlink'] = $commentfeedlink;
+
+        return $this->data['commentfeedlink'];
+    }
+
+    /**
+     * Set the XPath query (incl. on all Extensions)
+     *
+     * @param DOMXPath $xpath
+     * @return void
+     */
+    public function setXpath(DOMXPath $xpath)
+    {
+        parent::setXpath($xpath);
+        foreach ($this->extensions as $extension) {
+            $extension->setXpath($this->xpath);
+        }
+    }
+}

3rdparty/ZendFeed/Reader/Exception/BadMethodCallException.php

@@ -0,0 +1,17 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Exception;
+
+use Zend\Feed\Exception;
+
+class BadMethodCallException
+    extends Exception\BadMethodCallException
+    implements ExceptionInterface
+{}

3rdparty/ZendFeed/Reader/Exception/ExceptionInterface.php

@@ -0,0 +1,15 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Exception;
+
+use Zend\Feed\Exception\ExceptionInterface as Exception;
+
+interface ExceptionInterface extends Exception
+{}

3rdparty/ZendFeed/Reader/Exception/InvalidArgumentException.php

@@ -0,0 +1,17 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Exception;
+
+use Zend\Feed\Exception;
+
+class InvalidArgumentException
+    extends Exception\InvalidArgumentException
+    implements ExceptionInterface
+{}

3rdparty/ZendFeed/Reader/Exception/RuntimeException.php

@@ -0,0 +1,17 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Exception;
+
+use Zend\Feed\Exception;
+
+class RuntimeException
+    extends Exception\RuntimeException
+    implements ExceptionInterface
+{}

3rdparty/ZendFeed/Reader/Extension/AbstractEntry.php

@@ -0,0 +1,233 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Extension;
+
+use DOMDocument;
+use DOMElement;
+use DOMXPath;
+use Zend\Feed\Reader;
+
+abstract class AbstractEntry
+{
+    /**
+     * Feed entry data
+     *
+     * @var array
+     */
+    protected $data = array();
+
+    /**
+     * DOM document object
+     *
+     * @var DOMDocument
+     */
+    protected $domDocument = null;
+
+    /**
+     * Entry instance
+     *
+     * @var DOMElement
+     */
+    protected $entry = null;
+
+    /**
+     * Pointer to the current entry
+     *
+     * @var int
+     */
+    protected $entryKey = 0;
+
+    /**
+     * XPath object
+     *
+     * @var DOMXPath
+     */
+    protected $xpath = null;
+
+    /**
+     * XPath query
+     *
+     * @var string
+     */
+    protected $xpathPrefix = '';
+
+    /**
+     * Set the entry DOMElement
+     *
+     * Has side effect of setting the DOMDocument for the entry.
+     *
+     * @param  DOMElement $entry
+     * @return AbstractEntry
+     */
+    public function setEntryElement(DOMElement $entry)
+    {
+        $this->entry = $entry;
+        $this->domDocument = $entry->ownerDocument;
+        return $this;
+    }
+
+    /**
+     * Get the entry DOMElement
+     *
+     * @return DOMElement
+     */
+    public function getEntryElement()
+    {
+        return $this->entry;
+    }
+
+    /**
+     * Set the entry key
+     *
+     * @param  string $entryKey
+     * @return AbstractEntry
+     */
+    public function setEntryKey($entryKey)
+    {
+        $this->entryKey = $entryKey;
+        return $this;
+    }
+
+    /**
+     * Get the DOM
+     *
+     * @return DOMDocument
+     */
+    public function getDomDocument()
+    {
+        return $this->domDocument;
+    }
+
+    /**
+     * Get the Entry's encoding
+     *
+     * @return string
+     */
+    public function getEncoding()
+    {
+        $assumed = $this->getDomDocument()->encoding;
+        return $assumed;
+    }
+
+    /**
+     * Set the entry type
+     *
+     * Has side effect of setting xpath prefix
+     *
+     * @param  string $type
+     * @return AbstractEntry
+     */
+    public function setType($type)
+    {
+        if (null === $type) {
+            $this->data['type'] = null;
+            return $this;
+        }
+
+        $this->data['type'] = $type;
+        if ($type === Reader\Reader::TYPE_RSS_10
+            || $type === Reader\Reader::TYPE_RSS_090
+        ) {
+            $this->setXpathPrefix('//rss:item[' . ($this->entryKey + 1) . ']');
+            return $this;
+        }
+
+        if ($type === Reader\Reader::TYPE_ATOM_10
+            || $type === Reader\Reader::TYPE_ATOM_03
+        ) {
+            $this->setXpathPrefix('//atom:entry[' . ($this->entryKey + 1) . ']');
+            return $this;
+        }
+
+        $this->setXpathPrefix('//item[' . ($this->entryKey + 1) . ']');
+        return $this;
+    }
+
+    /**
+     * Get the entry type
+     *
+     * @return string
+     */
+    public function getType()
+    {
+        $type = $this->data['type'];
+        if ($type === null) {
+            $type = Reader\Reader::detectType($this->getEntryElement(), true);
+            $this->setType($type);
+        }
+
+        return $type;
+    }
+
+    /**
+     * Set the XPath query
+     *
+     * @param  DOMXPath $xpath
+     * @return AbstractEntry
+     */
+    public function setXpath(DOMXPath $xpath)
+    {
+        $this->xpath = $xpath;
+        $this->registerNamespaces();
+        return $this;
+    }
+
+    /**
+     * Get the XPath query object
+     *
+     * @return DOMXPath
+     */
+    public function getXpath()
+    {
+        if (!$this->xpath) {
+            $this->setXpath(new DOMXPath($this->getDomDocument()));
+        }
+        return $this->xpath;
+    }
+
+    /**
+     * Serialize the entry to an array
+     *
+     * @return array
+     */
+    public function toArray()
+    {
+        return $this->data;
+    }
+
+    /**
+     * Get the XPath prefix
+     *
+     * @return string
+     */
+    public function getXpathPrefix()
+    {
+        return $this->xpathPrefix;
+    }
+
+    /**
+     * Set the XPath prefix
+     *
+     * @param  string $prefix
+     * @return AbstractEntry
+     */
+    public function setXpathPrefix($prefix)
+    {
+        $this->xpathPrefix = $prefix;
+        return $this;
+    }
+
+    /**
+     * Register XML namespaces
+     *
+     * @return void
+     */
+    abstract protected function registerNamespaces();
+}

3rdparty/ZendFeed/Reader/Extension/AbstractFeed.php

@@ -0,0 +1,176 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Extension;
+
+use DOMDocument;
+use DOMXPath;
+use Zend\Feed\Reader;
+
+abstract class AbstractFeed
+{
+    /**
+     * Parsed feed data
+     *
+     * @var array
+     */
+    protected $data = array();
+
+    /**
+     * Parsed feed data in the shape of a DOMDocument
+     *
+     * @var DOMDocument
+     */
+    protected $domDocument = null;
+
+    /**
+     * The base XPath query used to retrieve feed data
+     *
+     * @var DOMXPath
+     */
+    protected $xpath = null;
+
+    /**
+     * The XPath prefix
+     *
+     * @var string
+     */
+    protected $xpathPrefix = '';
+
+    /**
+     * Set the DOM document
+     *
+     * @param  DOMDocument $dom
+     * @return AbstractFeed
+     */
+    public function setDomDocument(DOMDocument $dom)
+    {
+        $this->domDocument = $dom;
+        return $this;
+    }
+
+    /**
+     * Get the DOM
+     *
+     * @return DOMDocument
+     */
+    public function getDomDocument()
+    {
+        return $this->domDocument;
+    }
+
+    /**
+     * Get the Feed's encoding
+     *
+     * @return string
+     */
+    public function getEncoding()
+    {
+        $assumed = $this->getDomDocument()->encoding;
+        return $assumed;
+    }
+
+    /**
+     * Set the feed type
+     *
+     * @param  string $type
+     * @return AbstractFeed
+     */
+    public function setType($type)
+    {
+        $this->data['type'] = $type;
+        return $this;
+    }
+
+    /**
+     * Get the feed type
+     *
+     * If null, it will attempt to autodetect the type.
+     *
+     * @return string
+     */
+    public function getType()
+    {
+        $type = $this->data['type'];
+        if (null === $type) {
+            $type = Reader\Reader::detectType($this->getDomDocument());
+            $this->setType($type);
+        }
+        return $type;
+    }
+
+
+    /**
+     * Return the feed as an array
+     *
+     * @return array
+     */
+    public function toArray() // untested
+    {
+        return $this->data;
+    }
+
+    /**
+     * Set the XPath query
+     *
+     * @param  DOMXPath $xpath
+     * @return AbstractEntry
+     */
+    public function setXpath(DOMXPath $xpath = null)
+    {
+        if (null === $xpath) {
+            $this->xpath = null;
+            return $this;
+        }
+
+        $this->xpath = $xpath;
+        $this->registerNamespaces();
+        return $this;
+    }
+
+    /**
+     * Get the DOMXPath object
+     *
+     * @return string
+     */
+    public function getXpath()
+    {
+        if (null === $this->xpath) {
+            $this->setXpath(new DOMXPath($this->getDomDocument()));
+        }
+
+        return $this->xpath;
+    }
+
+    /**
+     * Get the XPath prefix
+     *
+     * @return string
+     */
+    public function getXpathPrefix()
+    {
+        return $this->xpathPrefix;
+    }
+
+    /**
+     * Set the XPath prefix
+     *
+     * @param string $prefix
+     * @return void
+     */
+    public function setXpathPrefix($prefix)
+    {
+        $this->xpathPrefix = $prefix;
+    }
+
+    /**
+     * Register the default namespaces for the current feed format
+     */
+    abstract protected function registerNamespaces();
+}

3rdparty/ZendFeed/Reader/Extension/Atom/Entry.php

@@ -0,0 +1,628 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Extension\Atom;
+
+use DateTime;
+use DOMDocument;
+use DOMElement;
+use stdClass;
+use Zend\Feed\Reader;
+use Zend\Feed\Reader\Collection;
+use Zend\Feed\Reader\Extension;
+use Zend\Feed\Uri;
+
+class Entry extends Extension\AbstractEntry
+{
+    /**
+     * Get the specified author
+     *
+     * @param  int $index
+     * @return string|null
+     */
+    public function getAuthor($index = 0)
+    {
+        $authors = $this->getAuthors();
+
+        if (isset($authors[$index])) {
+            return $authors[$index];
+        }
+
+        return null;
+    }
+
+    /**
+     * Get an array with feed authors
+     *
+     * @return Collection\Author
+     */
+    public function getAuthors()
+    {
+        if (array_key_exists('authors', $this->data)) {
+            return $this->data['authors'];
+        }
+
+        $authors = array();
+        $list = $this->getXpath()->query($this->getXpathPrefix() . '//atom:author');
+
+        if (!$list->length) {
+            /**
+             * TODO: Limit query to feed level els only!
+             */
+            $list = $this->getXpath()->query('//atom:author');
+        }
+
+        if ($list->length) {
+            foreach ($list as $author) {
+                $author = $this->getAuthorFromElement($author);
+                if (!empty($author)) {
+                    $authors[] = $author;
+                }
+            }
+        }
+
+        if (count($authors) == 0) {
+            $authors = new Collection\Author();
+        } else {
+            $authors = new Collection\Author(
+                Reader\Reader::arrayUnique($authors)
+            );
+        }
+
+        $this->data['authors'] = $authors;
+        return $this->data['authors'];
+    }
+
+    /**
+     * Get the entry content
+     *
+     * @return string
+     */
+    public function getContent()
+    {
+        if (array_key_exists('content', $this->data)) {
+            return $this->data['content'];
+        }
+
+        $content = null;
+
+        $el = $this->getXpath()->query($this->getXpathPrefix() . '/atom:content');
+        if ($el->length > 0) {
+            $el = $el->item(0);
+            $type = $el->getAttribute('type');
+            switch ($type) {
+                case '':
+                case 'text':
+                case 'text/plain':
+                case 'html':
+                case 'text/html':
+                    $content = $el->nodeValue;
+                break;
+                case 'xhtml':
+                    $this->getXpath()->registerNamespace('xhtml', 'http://www.w3.org/1999/xhtml');
+                    $xhtml = $this->getXpath()->query(
+                        $this->getXpathPrefix() . '/atom:content/xhtml:div'
+                    )->item(0);
+                    $d = new DOMDocument('1.0', $this->getEncoding());
+                    $xhtmls = $d->importNode($xhtml, true);
+                    $d->appendChild($xhtmls);
+                    $content = $this->collectXhtml(
+                        $d->saveXML(),
+                        $d->lookupPrefix('http://www.w3.org/1999/xhtml')
+                    );
+                break;
+            }
+        }
+
+        if (!$content) {
+            $content = $this->getDescription();
+        }
+
+        $this->data['content'] = trim($content);
+
+        return $this->data['content'];
+    }
+
+    /**
+     * Parse out XHTML to remove the namespacing
+     *
+     * @param $xhtml
+     * @param $prefix
+     * @return mixed
+     */
+    protected function collectXhtml($xhtml, $prefix)
+    {
+        if (!empty($prefix)) $prefix = $prefix . ':';
+        $matches = array(
+            "/<\?xml[^<]*>[^<]*<" . $prefix . "div[^<]*/",
+            "/<\/" . $prefix . "div>\s*$/"
+        );
+        $xhtml = preg_replace($matches, '', $xhtml);
+        if (!empty($prefix)) {
+            $xhtml = preg_replace("/(<[\/]?)" . $prefix . "([a-zA-Z]+)/", '$1$2', $xhtml);
+        }
+        return $xhtml;
+    }
+
+    /**
+     * Get the entry creation date
+     *
+     * @return string
+     */
+    public function getDateCreated()
+    {
+        if (array_key_exists('datecreated', $this->data)) {
+            return $this->data['datecreated'];
+        }
+
+        $date = null;
+
+        if ($this->getAtomType() === Reader\Reader::TYPE_ATOM_03) {
+            $dateCreated = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/atom:created)');
+        } else {
+            $dateCreated = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/atom:published)');
+        }
+
+        if ($dateCreated) {
+            $date = new DateTime($dateCreated);
+        }
+
+        $this->data['datecreated'] = $date;
+
+        return $this->data['datecreated'];
+    }
+
+    /**
+     * Get the entry modification date
+     *
+     * @return string
+     */
+    public function getDateModified()
+    {
+        if (array_key_exists('datemodified', $this->data)) {
+            return $this->data['datemodified'];
+        }
+
+        $date = null;
+
+        if ($this->getAtomType() === Reader\Reader::TYPE_ATOM_03) {
+            $dateModified = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/atom:modified)');
+        } else {
+            $dateModified = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/atom:updated)');
+        }
+
+        if ($dateModified) {
+            $date = new DateTime($dateModified);
+        }
+
+        $this->data['datemodified'] = $date;
+
+        return $this->data['datemodified'];
+    }
+
+    /**
+     * Get the entry description
+     *
+     * @return string
+     */
+    public function getDescription()
+    {
+        if (array_key_exists('description', $this->data)) {
+            return $this->data['description'];
+        }
+
+        $description = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/atom:summary)');
+
+        if (!$description) {
+            $description = null;
+        }
+
+        $this->data['description'] = $description;
+
+        return $this->data['description'];
+    }
+
+    /**
+     * Get the entry enclosure
+     *
+     * @return string
+     */
+    public function getEnclosure()
+    {
+        if (array_key_exists('enclosure', $this->data)) {
+            return $this->data['enclosure'];
+        }
+
+        $enclosure = null;
+
+        $nodeList = $this->getXpath()->query($this->getXpathPrefix() . '/atom:link[@rel="enclosure"]');
+
+        if ($nodeList->length > 0) {
+            $enclosure         = new stdClass();
+            $enclosure->url    = $nodeList->item(0)->getAttribute('href');
+            $enclosure->length = $nodeList->item(0)->getAttribute('length');
+            $enclosure->type   = $nodeList->item(0)->getAttribute('type');
+        }
+
+        $this->data['enclosure'] = $enclosure;
+
+        return $this->data['enclosure'];
+    }
+
+    /**
+     * Get the entry ID
+     *
+     * @return string
+     */
+    public function getId()
+    {
+        if (array_key_exists('id', $this->data)) {
+            return $this->data['id'];
+        }
+
+        $id = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/atom:id)');
+
+        if (!$id) {
+            if ($this->getPermalink()) {
+                $id = $this->getPermalink();
+            } elseif ($this->getTitle()) {
+                $id = $this->getTitle();
+            } else {
+                $id = null;
+            }
+        }
+
+        $this->data['id'] = $id;
+
+        return $this->data['id'];
+    }
+
+    /**
+     * Get the base URI of the feed (if set).
+     *
+     * @return string|null
+     */
+    public function getBaseUrl()
+    {
+        if (array_key_exists('baseUrl', $this->data)) {
+            return $this->data['baseUrl'];
+        }
+
+        $baseUrl = $this->getXpath()->evaluate('string('
+            . $this->getXpathPrefix() . '/@xml:base[1]'
+        . ')');
+
+        if (!$baseUrl) {
+            $baseUrl = $this->getXpath()->evaluate('string(//@xml:base[1])');
+        }
+
+        if (!$baseUrl) {
+            $baseUrl = null;
+        }
+
+        $this->data['baseUrl'] = $baseUrl;
+
+        return $this->data['baseUrl'];
+    }
+
+    /**
+     * Get a specific link
+     *
+     * @param  int $index
+     * @return string
+     */
+    public function getLink($index = 0)
+    {
+        if (!array_key_exists('links', $this->data)) {
+            $this->getLinks();
+        }
+
+        if (isset($this->data['links'][$index])) {
+            return $this->data['links'][$index];
+        }
+
+        return null;
+    }
+
+    /**
+     * Get all links
+     *
+     * @return array
+     */
+    public function getLinks()
+    {
+        if (array_key_exists('links', $this->data)) {
+            return $this->data['links'];
+        }
+
+        $links = array();
+
+        $list = $this->getXpath()->query(
+            $this->getXpathPrefix() . '//atom:link[@rel="alternate"]/@href' . '|' .
+            $this->getXpathPrefix() . '//atom:link[not(@rel)]/@href'
+        );
+
+        if ($list->length) {
+            foreach ($list as $link) {
+                $links[] = $this->absolutiseUri($link->value);
+            }
+        }
+
+        $this->data['links'] = $links;
+
+        return $this->data['links'];
+    }
+
+    /**
+     * Get a permalink to the entry
+     *
+     * @return string
+     */
+    public function getPermalink()
+    {
+        return $this->getLink(0);
+    }
+
+    /**
+     * Get the entry title
+     *
+     * @return string
+     */
+    public function getTitle()
+    {
+        if (array_key_exists('title', $this->data)) {
+            return $this->data['title'];
+        }
+
+        $title = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/atom:title)');
+
+        if (!$title) {
+            $title = null;
+        }
+
+        $this->data['title'] = $title;
+
+        return $this->data['title'];
+    }
+
+    /**
+     * Get the number of comments/replies for current entry
+     *
+     * @return int
+     */
+    public function getCommentCount()
+    {
+        if (array_key_exists('commentcount', $this->data)) {
+            return $this->data['commentcount'];
+        }
+
+        $count = null;
+
+        $this->getXpath()->registerNamespace('thread10', 'http://purl.org/syndication/thread/1.0');
+        $list = $this->getXpath()->query(
+            $this->getXpathPrefix() . '//atom:link[@rel="replies"]/@thread10:count'
+        );
+
+        if ($list->length) {
+            $count = $list->item(0)->value;
+        }
+
+        $this->data['commentcount'] = $count;
+
+        return $this->data['commentcount'];
+    }
+
+    /**
+     * Returns a URI pointing to the HTML page where comments can be made on this entry
+     *
+     * @return string
+     */
+    public function getCommentLink()
+    {
+        if (array_key_exists('commentlink', $this->data)) {
+            return $this->data['commentlink'];
+        }
+
+        $link = null;
+
+        $list = $this->getXpath()->query(
+            $this->getXpathPrefix() . '//atom:link[@rel="replies" and @type="text/html"]/@href'
+        );
+
+        if ($list->length) {
+            $link = $list->item(0)->value;
+            $link = $this->absolutiseUri($link);
+        }
+
+        $this->data['commentlink'] = $link;
+
+        return $this->data['commentlink'];
+    }
+
+    /**
+     * Returns a URI pointing to a feed of all comments for this entry
+     *
+     * @param string $type
+     * @return string
+     */
+    public function getCommentFeedLink($type = 'atom')
+    {
+        if (array_key_exists('commentfeedlink', $this->data)) {
+            return $this->data['commentfeedlink'];
+        }
+
+        $link = null;
+
+        $list = $this->getXpath()->query(
+            $this->getXpathPrefix() . '//atom:link[@rel="replies" and @type="application/' . $type.'+xml"]/@href'
+        );
+
+        if ($list->length) {
+            $link = $list->item(0)->value;
+            $link = $this->absolutiseUri($link);
+        }
+
+        $this->data['commentfeedlink'] = $link;
+
+        return $this->data['commentfeedlink'];
+    }
+
+    /**
+     * Get all categories
+     *
+     * @return Collection\Category
+     */
+    public function getCategories()
+    {
+        if (array_key_exists('categories', $this->data)) {
+            return $this->data['categories'];
+        }
+
+        if ($this->getAtomType() == Reader\Reader::TYPE_ATOM_10) {
+            $list = $this->getXpath()->query($this->getXpathPrefix() . '//atom:category');
+        } else {
+            /**
+             * Since Atom 0.3 did not support categories, it would have used the
+             * Dublin Core extension. However there is a small possibility Atom 0.3
+             * may have been retrofitted to use Atom 1.0 instead.
+             */
+            $this->getXpath()->registerNamespace('atom10', Reader\Reader::NAMESPACE_ATOM_10);
+            $list = $this->getXpath()->query($this->getXpathPrefix() . '//atom10:category');
+        }
+
+        if ($list->length) {
+            $categoryCollection = new Collection\Category;
+            foreach ($list as $category) {
+                $categoryCollection[] = array(
+                    'term' => $category->getAttribute('term'),
+                    'scheme' => $category->getAttribute('scheme'),
+                    'label' => $category->getAttribute('label')
+                );
+            }
+        } else {
+            return new Collection\Category;
+        }
+
+        $this->data['categories'] = $categoryCollection;
+
+        return $this->data['categories'];
+    }
+
+    /**
+     * Get source feed metadata from the entry
+     *
+     * @return Reader\Feed\Atom\Source|null
+     */
+    public function getSource()
+    {
+        if (array_key_exists('source', $this->data)) {
+            return $this->data['source'];
+        }
+
+        $source = null;
+        // TODO: Investigate why _getAtomType() fails here. Is it even needed?
+        if ($this->getType() == Reader\Reader::TYPE_ATOM_10) {
+            $list = $this->getXpath()->query($this->getXpathPrefix() . '/atom:source[1]');
+            if ($list->length) {
+                $element = $list->item(0);
+                $source = new Reader\Feed\Atom\Source($element, $this->getXpathPrefix());
+            }
+        }
+
+        $this->data['source'] = $source;
+        return $this->data['source'];
+    }
+
+    /**
+     *  Attempt to absolutise the URI, i.e. if a relative URI apply the
+     *  xml:base value as a prefix to turn into an absolute URI.
+     *
+     * @param $link
+     * @return string
+     */
+    protected function absolutiseUri($link)
+    {
+        if (!Uri::factory($link)->isAbsolute()) {
+            if ($this->getBaseUrl() !== null) {
+                $link = $this->getBaseUrl() . $link;
+                if (!Uri::factory($link)->isValid()) {
+                    $link = null;
+                }
+            }
+        }
+        return $link;
+    }
+
+    /**
+     * Get an author entry
+     *
+     * @param DOMElement $element
+     * @return string
+     */
+    protected function getAuthorFromElement(DOMElement $element)
+    {
+        $author = array();
+
+        $emailNode = $element->getElementsByTagName('email');
+        $nameNode  = $element->getElementsByTagName('name');
+        $uriNode   = $element->getElementsByTagName('uri');
+
+        if ($emailNode->length && strlen($emailNode->item(0)->nodeValue) > 0) {
+            $author['email'] = $emailNode->item(0)->nodeValue;
+        }
+
+        if ($nameNode->length && strlen($nameNode->item(0)->nodeValue) > 0) {
+            $author['name'] = $nameNode->item(0)->nodeValue;
+        }
+
+        if ($uriNode->length && strlen($uriNode->item(0)->nodeValue) > 0) {
+            $author['uri'] = $uriNode->item(0)->nodeValue;
+        }
+
+        if (empty($author)) {
+            return null;
+        }
+        return $author;
+    }
+
+    /**
+     * Register the default namespaces for the current feed format
+     */
+    protected function registerNamespaces()
+    {
+        switch ($this->getAtomType()) {
+            case Reader\Reader::TYPE_ATOM_03:
+                $this->getXpath()->registerNamespace('atom', Reader\Reader::NAMESPACE_ATOM_03);
+                break;
+            default:
+                $this->getXpath()->registerNamespace('atom', Reader\Reader::NAMESPACE_ATOM_10);
+                break;
+        }
+    }
+
+    /**
+     * Detect the presence of any Atom namespaces in use
+     *
+     * @return string
+     */
+    protected function getAtomType()
+    {
+        $dom = $this->getDomDocument();
+        $prefixAtom03 = $dom->lookupPrefix(Reader\Reader::NAMESPACE_ATOM_03);
+        $prefixAtom10 = $dom->lookupPrefix(Reader\Reader::NAMESPACE_ATOM_10);
+        if ($dom->isDefaultNamespace(Reader\Reader::NAMESPACE_ATOM_03)
+        || !empty($prefixAtom03)) {
+            return Reader\Reader::TYPE_ATOM_03;
+        }
+        if ($dom->isDefaultNamespace(Reader\Reader::NAMESPACE_ATOM_10)
+        || !empty($prefixAtom10)) {
+            return Reader\Reader::TYPE_ATOM_10;
+        }
+    }
+}

3rdparty/ZendFeed/Reader/Extension/Atom/Feed.php

@@ -0,0 +1,536 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Extension\Atom;
+
+use DateTime;
+use DOMElement;
+use Zend\Feed\Reader;
+use Zend\Feed\Reader\Collection;
+use Zend\Feed\Reader\Extension;
+use Zend\Feed\Uri;
+
+class Feed extends Extension\AbstractFeed
+{
+    /**
+     * Get a single author
+     *
+     * @param  int $index
+     * @return string|null
+     */
+    public function getAuthor($index = 0)
+    {
+        $authors = $this->getAuthors();
+
+        if (isset($authors[$index])) {
+            return $authors[$index];
+        }
+
+        return null;
+    }
+
+    /**
+     * Get an array with feed authors
+     *
+     * @return Collection\Author
+     */
+    public function getAuthors()
+    {
+        if (array_key_exists('authors', $this->data)) {
+            return $this->data['authors'];
+        }
+
+        $list = $this->xpath->query('//atom:author');
+
+        $authors = array();
+
+        if ($list->length) {
+            foreach ($list as $author) {
+                $author = $this->getAuthorFromElement($author);
+                if (!empty($author)) {
+                    $authors[] = $author;
+                }
+            }
+        }
+
+        if (count($authors) == 0) {
+            $authors = new Collection\Author();
+        } else {
+            $authors = new Collection\Author(
+                Reader\Reader::arrayUnique($authors)
+            );
+        }
+
+        $this->data['authors'] = $authors;
+
+        return $this->data['authors'];
+    }
+
+    /**
+     * Get the copyright entry
+     *
+     * @return string|null
+     */
+    public function getCopyright()
+    {
+        if (array_key_exists('copyright', $this->data)) {
+            return $this->data['copyright'];
+        }
+
+        $copyright = null;
+
+        if ($this->getType() === Reader\Reader::TYPE_ATOM_03) {
+            $copyright = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/atom:copyright)');
+        } else {
+            $copyright = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/atom:rights)');
+        }
+
+        if (!$copyright) {
+            $copyright = null;
+        }
+
+        $this->data['copyright'] = $copyright;
+
+        return $this->data['copyright'];
+    }
+
+    /**
+     * Get the feed creation date
+     *
+     * @return DateTime|null
+     */
+    public function getDateCreated()
+    {
+        if (array_key_exists('datecreated', $this->data)) {
+            return $this->data['datecreated'];
+        }
+
+        $date = null;
+
+        if ($this->getType() === Reader\Reader::TYPE_ATOM_03) {
+            $dateCreated = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/atom:created)');
+        } else {
+            $dateCreated = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/atom:published)');
+        }
+
+        if ($dateCreated) {
+            $date = new DateTime($dateCreated);
+        }
+
+        $this->data['datecreated'] = $date;
+
+        return $this->data['datecreated'];
+    }
+
+    /**
+     * Get the feed modification date
+     *
+     * @return DateTime|null
+     */
+    public function getDateModified()
+    {
+        if (array_key_exists('datemodified', $this->data)) {
+            return $this->data['datemodified'];
+        }
+
+        $date = null;
+
+        if ($this->getType() === Reader\Reader::TYPE_ATOM_03) {
+            $dateModified = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/atom:modified)');
+        } else {
+            $dateModified = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/atom:updated)');
+        }
+
+        if ($dateModified) {
+            $date = new DateTime($dateModified);
+        }
+
+        $this->data['datemodified'] = $date;
+
+        return $this->data['datemodified'];
+    }
+
+    /**
+     * Get the feed description
+     *
+     * @return string|null
+     */
+    public function getDescription()
+    {
+        if (array_key_exists('description', $this->data)) {
+            return $this->data['description'];
+        }
+
+        $description = null;
+
+        if ($this->getType() === Reader\Reader::TYPE_ATOM_03) {
+            $description = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/atom:tagline)');
+        } else {
+            $description = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/atom:subtitle)');
+        }
+
+        if (!$description) {
+            $description = null;
+        }
+
+        $this->data['description'] = $description;
+
+        return $this->data['description'];
+    }
+
+    /**
+     * Get the feed generator entry
+     *
+     * @return string|null
+     */
+    public function getGenerator()
+    {
+        if (array_key_exists('generator', $this->data)) {
+            return $this->data['generator'];
+        }
+        // TODO: Add uri support
+        $generator = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/atom:generator)');
+
+        if (!$generator) {
+            $generator = null;
+        }
+
+        $this->data['generator'] = $generator;
+
+        return $this->data['generator'];
+    }
+
+    /**
+     * Get the feed ID
+     *
+     * @return string|null
+     */
+    public function getId()
+    {
+        if (array_key_exists('id', $this->data)) {
+            return $this->data['id'];
+        }
+
+        $id = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/atom:id)');
+
+        if (!$id) {
+            if ($this->getLink()) {
+                $id = $this->getLink();
+            } elseif ($this->getTitle()) {
+                $id = $this->getTitle();
+            } else {
+                $id = null;
+            }
+        }
+
+        $this->data['id'] = $id;
+
+        return $this->data['id'];
+    }
+
+    /**
+     * Get the feed language
+     *
+     * @return string|null
+     */
+    public function getLanguage()
+    {
+        if (array_key_exists('language', $this->data)) {
+            return $this->data['language'];
+        }
+
+        $language = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/atom:lang)');
+
+        if (!$language) {
+            $language = $this->xpath->evaluate('string(//@xml:lang[1])');
+        }
+
+        if (!$language) {
+            $language = null;
+        }
+
+        $this->data['language'] = $language;
+
+        return $this->data['language'];
+    }
+
+    /**
+     * Get the feed image
+     *
+     * @return array|null
+     */
+    public function getImage()
+    {
+        if (array_key_exists('image', $this->data)) {
+            return $this->data['image'];
+        }
+
+        $imageUrl = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/atom:logo)');
+
+        if (!$imageUrl) {
+            $image = null;
+        } else {
+            $image = array('uri' => $imageUrl);
+        }
+
+        $this->data['image'] = $image;
+
+        return $this->data['image'];
+    }
+
+    /**
+     * Get the base URI of the feed (if set).
+     *
+     * @return string|null
+     */
+    public function getBaseUrl()
+    {
+        if (array_key_exists('baseUrl', $this->data)) {
+            return $this->data['baseUrl'];
+        }
+
+        $baseUrl = $this->xpath->evaluate('string(//@xml:base[1])');
+
+        if (!$baseUrl) {
+            $baseUrl = null;
+        }
+        $this->data['baseUrl'] = $baseUrl;
+
+        return $this->data['baseUrl'];
+    }
+
+    /**
+     * Get a link to the source website
+     *
+     * @return string|null
+     */
+    public function getLink()
+    {
+        if (array_key_exists('link', $this->data)) {
+            return $this->data['link'];
+        }
+
+        $link = null;
+
+        $list = $this->xpath->query(
+            $this->getXpathPrefix() . '/atom:link[@rel="alternate"]/@href' . '|' .
+            $this->getXpathPrefix() . '/atom:link[not(@rel)]/@href'
+        );
+
+        if ($list->length) {
+            $link = $list->item(0)->nodeValue;
+            $link = $this->absolutiseUri($link);
+        }
+
+        $this->data['link'] = $link;
+
+        return $this->data['link'];
+    }
+
+    /**
+     * Get a link to the feed's XML Url
+     *
+     * @return string|null
+     */
+    public function getFeedLink()
+    {
+        if (array_key_exists('feedlink', $this->data)) {
+            return $this->data['feedlink'];
+        }
+
+        $link = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/atom:link[@rel="self"]/@href)');
+
+        $link = $this->absolutiseUri($link);
+
+        $this->data['feedlink'] = $link;
+
+        return $this->data['feedlink'];
+    }
+
+    /**
+     * Get an array of any supported Pusubhubbub endpoints
+     *
+     * @return array|null
+     */
+    public function getHubs()
+    {
+        if (array_key_exists('hubs', $this->data)) {
+            return $this->data['hubs'];
+        }
+        $hubs = array();
+
+        $list = $this->xpath->query($this->getXpathPrefix()
+            . '//atom:link[@rel="hub"]/@href');
+
+        if ($list->length) {
+            foreach ($list as $uri) {
+                $hubs[] = $this->absolutiseUri($uri->nodeValue);
+            }
+        } else {
+            $hubs = null;
+        }
+
+        $this->data['hubs'] = $hubs;
+
+        return $this->data['hubs'];
+    }
+
+    /**
+     * Get the feed title
+     *
+     * @return string|null
+     */
+    public function getTitle()
+    {
+        if (array_key_exists('title', $this->data)) {
+            return $this->data['title'];
+        }
+
+        $title = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/atom:title)');
+
+        if (!$title) {
+            $title = null;
+        }
+
+        $this->data['title'] = $title;
+
+        return $this->data['title'];
+    }
+
+    /**
+     * Get all categories
+     *
+     * @return Collection\Category
+     */
+    public function getCategories()
+    {
+        if (array_key_exists('categories', $this->data)) {
+            return $this->data['categories'];
+        }
+
+        if ($this->getType() == Reader\Reader::TYPE_ATOM_10) {
+            $list = $this->xpath->query($this->getXpathPrefix() . '/atom:category');
+        } else {
+            /**
+             * Since Atom 0.3 did not support categories, it would have used the
+             * Dublin Core extension. However there is a small possibility Atom 0.3
+             * may have been retrofittied to use Atom 1.0 instead.
+             */
+            $this->xpath->registerNamespace('atom10', Reader\Reader::NAMESPACE_ATOM_10);
+            $list = $this->xpath->query($this->getXpathPrefix() . '/atom10:category');
+        }
+
+        if ($list->length) {
+            $categoryCollection = new Collection\Category;
+            foreach ($list as $category) {
+                $categoryCollection[] = array(
+                    'term' => $category->getAttribute('term'),
+                    'scheme' => $category->getAttribute('scheme'),
+                    'label' => $category->getAttribute('label')
+                );
+            }
+        } else {
+            return new Collection\Category;
+        }
+
+        $this->data['categories'] = $categoryCollection;
+
+        return $this->data['categories'];
+    }
+
+    /**
+     * Get an author entry in RSS format
+     *
+     * @param  DOMElement $element
+     * @return string
+     */
+    protected function getAuthorFromElement(DOMElement $element)
+    {
+        $author = array();
+
+        $emailNode = $element->getElementsByTagName('email');
+        $nameNode  = $element->getElementsByTagName('name');
+        $uriNode   = $element->getElementsByTagName('uri');
+
+        if ($emailNode->length && strlen($emailNode->item(0)->nodeValue) > 0) {
+            $author['email'] = $emailNode->item(0)->nodeValue;
+        }
+
+        if ($nameNode->length && strlen($nameNode->item(0)->nodeValue) > 0) {
+            $author['name'] = $nameNode->item(0)->nodeValue;
+        }
+
+        if ($uriNode->length && strlen($uriNode->item(0)->nodeValue) > 0) {
+            $author['uri'] = $uriNode->item(0)->nodeValue;
+        }
+
+        if (empty($author)) {
+            return null;
+        }
+        return $author;
+    }
+
+    /**
+     *  Attempt to absolutise the URI, i.e. if a relative URI apply the
+     *  xml:base value as a prefix to turn into an absolute URI.
+     */
+    protected function absolutiseUri($link)
+    {
+        if (!Uri::factory($link)->isAbsolute()) {
+            if ($this->getBaseUrl() !== null) {
+                $link = $this->getBaseUrl() . $link;
+                if (!Uri::factory($link)->isValid()) {
+                    $link = null;
+                }
+            }
+        }
+        return $link;
+    }
+
+    /**
+     * Register the default namespaces for the current feed format
+     */
+    protected function registerNamespaces()
+    {
+        if ($this->getType() == Reader\Reader::TYPE_ATOM_10
+            || $this->getType() == Reader\Reader::TYPE_ATOM_03
+        ) {
+            return; // pre-registered at Feed level
+        }
+        $atomDetected = $this->getAtomType();
+        switch ($atomDetected) {
+            case Reader\Reader::TYPE_ATOM_03:
+                $this->xpath->registerNamespace('atom', Reader\Reader::NAMESPACE_ATOM_03);
+                break;
+            default:
+                $this->xpath->registerNamespace('atom', Reader\Reader::NAMESPACE_ATOM_10);
+                break;
+        }
+    }
+
+    /**
+     * Detect the presence of any Atom namespaces in use
+     */
+    protected function getAtomType()
+    {
+        $dom = $this->getDomDocument();
+        $prefixAtom03 = $dom->lookupPrefix(Reader\Reader::NAMESPACE_ATOM_03);
+        $prefixAtom10 = $dom->lookupPrefix(Reader\Reader::NAMESPACE_ATOM_10);
+        if ($dom->isDefaultNamespace(Reader\Reader::NAMESPACE_ATOM_10)
+            || !empty($prefixAtom10)
+        ) {
+            return Reader\Reader::TYPE_ATOM_10;
+        }
+        if ($dom->isDefaultNamespace(Reader\Reader::NAMESPACE_ATOM_03)
+            || !empty($prefixAtom03)
+        ) {
+            return Reader\Reader::TYPE_ATOM_03;
+        }
+    }
+}

3rdparty/ZendFeed/Reader/Extension/Content/Entry.php

@@ -0,0 +1,37 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Extension\Content;
+
+use Zend\Feed\Reader;
+use Zend\Feed\Reader\Extension;
+
+class Entry extends Extension\AbstractEntry
+{
+
+    public function getContent()
+    {
+        if ($this->getType() !== Reader\Reader::TYPE_RSS_10
+            && $this->getType() !== Reader\Reader::TYPE_RSS_090
+        ) {
+            $content = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/content:encoded)');
+        } else {
+            $content = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/content:encoded)');
+        }
+        return $content;
+    }
+
+    /**
+     * Register RSS Content Module namespace
+     */
+    protected function registerNamespaces()
+    {
+        $this->xpath->registerNamespace('content', 'http://purl.org/rss/1.0/modules/content/');
+    }
+}

3rdparty/ZendFeed/Reader/Extension/CreativeCommons/Entry.php

@@ -0,0 +1,73 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Extension\CreativeCommons;
+
+use Zend\Feed\Reader;
+use Zend\Feed\Reader\Extension;
+
+class Entry extends Extension\AbstractEntry
+{
+    /**
+     * Get the entry license
+     *
+     * @param int $index
+     * @return string|null
+     */
+    public function getLicense($index = 0)
+    {
+        $licenses = $this->getLicenses();
+
+        if (isset($licenses[$index])) {
+            return $licenses[$index];
+        }
+
+        return null;
+    }
+
+    /**
+     * Get the entry licenses
+     *
+     * @return array
+     */
+    public function getLicenses()
+    {
+        $name = 'licenses';
+        if (array_key_exists($name, $this->data)) {
+            return $this->data[$name];
+        }
+
+        $licenses = array();
+        $list = $this->xpath->evaluate($this->getXpathPrefix() . '//cc:license');
+
+        if ($list->length) {
+            foreach ($list as $license) {
+                    $licenses[] = $license->nodeValue;
+            }
+
+            $licenses = array_unique($licenses);
+        } else {
+            $cc = new Feed();
+            $licenses = $cc->getLicenses();
+        }
+
+        $this->data[$name] = $licenses;
+
+        return $this->data[$name];
+    }
+
+    /**
+     * Register Creative Commons namespaces
+     *
+     */
+    protected function registerNamespaces()
+    {
+        $this->xpath->registerNamespace('cc', 'http://backend.userland.com/creativeCommonsRssModule');
+    }
+}

3rdparty/ZendFeed/Reader/Extension/CreativeCommons/Feed.php

@@ -0,0 +1,71 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Extension\CreativeCommons;
+
+use Zend\Feed\Reader;
+use Zend\Feed\Reader\Extension;
+
+class Feed extends Extension\AbstractFeed
+{
+    /**
+     * Get the entry license
+     *
+     * @param int $index
+     * @return string|null
+     */
+    public function getLicense($index = 0)
+    {
+        $licenses = $this->getLicenses();
+
+        if (isset($licenses[$index])) {
+            return $licenses[$index];
+        }
+
+        return null;
+    }
+
+    /**
+     * Get the entry licenses
+     *
+     * @return array
+     */
+    public function getLicenses()
+    {
+        $name = 'licenses';
+        if (array_key_exists($name, $this->data)) {
+            return $this->data[$name];
+        }
+
+        $licenses = array();
+        $list = $this->xpath->evaluate('channel/cc:license');
+
+        if ($list->length) {
+            foreach ($list as $license) {
+                $licenses[] = $license->nodeValue;
+            }
+
+            $licenses = array_unique($licenses);
+        }
+
+        $this->data[$name] = $licenses;
+
+        return $this->data[$name];
+    }
+
+    /**
+     * Register Creative Commons namespaces
+     *
+     * @return void
+     */
+    protected function registerNamespaces()
+    {
+        $this->xpath->registerNamespace('cc', 'http://backend.userland.com/creativeCommonsRssModule');
+    }
+}

3rdparty/ZendFeed/Reader/Extension/DublinCore/Entry.php

@@ -0,0 +1,238 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Extension\DublinCore;
+
+use DateTime;
+use Zend\Feed\Reader;
+use Zend\Feed\Reader\Collection;
+use Zend\Feed\Reader\Extension;
+
+class Entry extends Extension\AbstractEntry
+{
+    /**
+     * Get an author entry
+     *
+     * @param int $index
+     * @return string
+     */
+    public function getAuthor($index = 0)
+    {
+        $authors = $this->getAuthors();
+
+        if (isset($authors[$index])) {
+            return $authors[$index];
+        }
+
+        return null;
+    }
+
+    /**
+     * Get an array with feed authors
+     *
+     * @return array
+     */
+    public function getAuthors()
+    {
+        if (array_key_exists('authors', $this->data)) {
+            return $this->data['authors'];
+        }
+
+        $authors = array();
+        $list = $this->getXpath()->evaluate($this->getXpathPrefix() . '//dc11:creator');
+
+        if (!$list->length) {
+            $list = $this->getXpath()->evaluate($this->getXpathPrefix() . '//dc10:creator');
+        }
+        if (!$list->length) {
+            $list = $this->getXpath()->evaluate($this->getXpathPrefix() . '//dc11:publisher');
+
+            if (!$list->length) {
+                $list = $this->getXpath()->evaluate($this->getXpathPrefix() . '//dc10:publisher');
+            }
+        }
+
+        if ($list->length) {
+            foreach ($list as $author) {
+                $authors[] = array(
+                    'name' => $author->nodeValue
+                );
+            }
+            $authors = new Collection\Author(
+                Reader\Reader::arrayUnique($authors)
+            );
+        } else {
+            $authors = null;
+        }
+
+        $this->data['authors'] = $authors;
+
+        return $this->data['authors'];
+    }
+
+    /**
+     * Get categories (subjects under DC)
+     *
+     * @return Collection\Category
+     */
+    public function getCategories()
+    {
+        if (array_key_exists('categories', $this->data)) {
+            return $this->data['categories'];
+        }
+
+        $list = $this->getXpath()->evaluate($this->getXpathPrefix() . '//dc11:subject');
+
+        if (!$list->length) {
+            $list = $this->getXpath()->evaluate($this->getXpathPrefix() . '//dc10:subject');
+        }
+
+        if ($list->length) {
+            $categoryCollection = new Collection\Category;
+            foreach ($list as $category) {
+                $categoryCollection[] = array(
+                    'term' => $category->nodeValue,
+                    'scheme' => null,
+                    'label' => $category->nodeValue,
+                );
+            }
+        } else {
+            $categoryCollection = new Collection\Category;
+        }
+
+        $this->data['categories'] = $categoryCollection;
+        return $this->data['categories'];
+    }
+
+
+    /**
+     * Get the entry content
+     *
+     * @return string
+     */
+    public function getContent()
+    {
+        return $this->getDescription();
+    }
+
+    /**
+     * Get the entry description
+     *
+     * @return string
+     */
+    public function getDescription()
+    {
+        if (array_key_exists('description', $this->data)) {
+            return $this->data['description'];
+        }
+
+        $description = null;
+        $description = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc11:description)');
+
+        if (!$description) {
+            $description = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc10:description)');
+        }
+
+        if (!$description) {
+            $description = null;
+        }
+
+        $this->data['description'] = $description;
+
+        return $this->data['description'];
+    }
+
+    /**
+     * Get the entry ID
+     *
+     * @return string
+     */
+    public function getId()
+    {
+        if (array_key_exists('id', $this->data)) {
+            return $this->data['id'];
+        }
+
+        $id = null;
+        $id = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc11:identifier)');
+
+        if (!$id) {
+            $id = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc10:identifier)');
+        }
+
+        $this->data['id'] = $id;
+
+        return $this->data['id'];
+    }
+
+    /**
+     * Get the entry title
+     *
+     * @return string
+     */
+    public function getTitle()
+    {
+        if (array_key_exists('title', $this->data)) {
+            return $this->data['title'];
+        }
+
+        $title = null;
+        $title = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc11:title)');
+
+        if (!$title) {
+            $title = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc10:title)');
+        }
+
+        if (!$title) {
+            $title = null;
+        }
+
+        $this->data['title'] = $title;
+
+        return $this->data['title'];
+    }
+
+    /**
+     *
+     *
+     * @return DateTime|null
+     */
+    public function getDate()
+    {
+        if (array_key_exists('date', $this->data)) {
+            return $this->data['date'];
+        }
+
+        $d    = null;
+        $date = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc11:date)');
+
+        if (!$date) {
+            $date = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc10:date)');
+        }
+
+        if ($date) {
+            $d = new DateTime($date);
+        }
+
+        $this->data['date'] = $d;
+
+        return $this->data['date'];
+    }
+
+    /**
+     * Register DC namespaces
+     *
+     * @return void
+     */
+    protected function registerNamespaces()
+    {
+        $this->getXpath()->registerNamespace('dc10', 'http://purl.org/dc/elements/1.0/');
+        $this->getXpath()->registerNamespace('dc11', 'http://purl.org/dc/elements/1.1/');
+    }
+}

3rdparty/ZendFeed/Reader/Extension/DublinCore/Feed.php

@@ -0,0 +1,281 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Extension\DublinCore;
+
+use DateTime;
+use Zend\Feed\Reader;
+use Zend\Feed\Reader\Collection;
+use Zend\Feed\Reader\Extension;
+
+class Feed extends Extension\AbstractFeed
+{
+    /**
+     * Get a single author
+     *
+     * @param  int $index
+     * @return string|null
+     */
+    public function getAuthor($index = 0)
+    {
+        $authors = $this->getAuthors();
+
+        if (isset($authors[$index])) {
+            return $authors[$index];
+        }
+
+        return null;
+    }
+
+    /**
+     * Get an array with feed authors
+     *
+     * @return array
+     */
+    public function getAuthors()
+    {
+        if (array_key_exists('authors', $this->data)) {
+            return $this->data['authors'];
+        }
+
+        $authors = array();
+        $list    = $this->getXpath()->query('//dc11:creator');
+
+        if (!$list->length) {
+            $list = $this->getXpath()->query('//dc10:creator');
+        }
+        if (!$list->length) {
+            $list = $this->getXpath()->query('//dc11:publisher');
+
+            if (!$list->length) {
+                $list = $this->getXpath()->query('//dc10:publisher');
+            }
+        }
+
+        if ($list->length) {
+            foreach ($list as $author) {
+                $authors[] = array(
+                    'name' => $author->nodeValue
+                );
+            }
+            $authors = new Collection\Author(
+                Reader\Reader::arrayUnique($authors)
+            );
+        } else {
+            $authors = null;
+        }
+
+        $this->data['authors'] = $authors;
+
+        return $this->data['authors'];
+    }
+
+    /**
+     * Get the copyright entry
+     *
+     * @return string|null
+     */
+    public function getCopyright()
+    {
+        if (array_key_exists('copyright', $this->data)) {
+            return $this->data['copyright'];
+        }
+
+        $copyright = null;
+        $copyright = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc11:rights)');
+
+        if (!$copyright) {
+            $copyright = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc10:rights)');
+        }
+
+        if (!$copyright) {
+            $copyright = null;
+        }
+
+        $this->data['copyright'] = $copyright;
+
+        return $this->data['copyright'];
+    }
+
+    /**
+     * Get the feed description
+     *
+     * @return string|null
+     */
+    public function getDescription()
+    {
+        if (array_key_exists('description', $this->data)) {
+            return $this->data['description'];
+        }
+
+        $description = null;
+        $description = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc11:description)');
+
+        if (!$description) {
+            $description = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc10:description)');
+        }
+
+        if (!$description) {
+            $description = null;
+        }
+
+        $this->data['description'] = $description;
+
+        return $this->data['description'];
+    }
+
+    /**
+     * Get the feed ID
+     *
+     * @return string|null
+     */
+    public function getId()
+    {
+        if (array_key_exists('id', $this->data)) {
+            return $this->data['id'];
+        }
+
+        $id = null;
+        $id = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc11:identifier)');
+
+        if (!$id) {
+            $id = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc10:identifier)');
+        }
+
+        $this->data['id'] = $id;
+
+        return $this->data['id'];
+    }
+
+    /**
+     * Get the feed language
+     *
+     * @return string|null
+     */
+    public function getLanguage()
+    {
+        if (array_key_exists('language', $this->data)) {
+            return $this->data['language'];
+        }
+
+        $language = null;
+        $language = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc11:language)');
+
+        if (!$language) {
+            $language = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc10:language)');
+        }
+
+        if (!$language) {
+            $language = null;
+        }
+
+        $this->data['language'] = $language;
+
+        return $this->data['language'];
+    }
+
+    /**
+     * Get the feed title
+     *
+     * @return string|null
+     */
+    public function getTitle()
+    {
+        if (array_key_exists('title', $this->data)) {
+            return $this->data['title'];
+        }
+
+        $title = null;
+        $title = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc11:title)');
+
+        if (!$title) {
+            $title = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc10:title)');
+        }
+
+        if (!$title) {
+            $title = null;
+        }
+
+        $this->data['title'] = $title;
+
+        return $this->data['title'];
+    }
+
+    /**
+     *
+     *
+     * @return DateTime|null
+     */
+    public function getDate()
+    {
+        if (array_key_exists('date', $this->data)) {
+            return $this->data['date'];
+        }
+
+        $d = null;
+        $date = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc11:date)');
+
+        if (!$date) {
+            $date = $this->getXpath()->evaluate('string(' . $this->getXpathPrefix() . '/dc10:date)');
+        }
+
+        if ($date) {
+            $d = new DateTime($date);
+        }
+
+        $this->data['date'] = $d;
+
+        return $this->data['date'];
+    }
+
+    /**
+     * Get categories (subjects under DC)
+     *
+     * @return Collection\Category
+     */
+    public function getCategories()
+    {
+        if (array_key_exists('categories', $this->data)) {
+            return $this->data['categories'];
+        }
+
+        $list = $this->getXpath()->evaluate($this->getXpathPrefix() . '//dc11:subject');
+
+        if (!$list->length) {
+            $list = $this->getXpath()->evaluate($this->getXpathPrefix() . '//dc10:subject');
+        }
+
+        if ($list->length) {
+            $categoryCollection = new Collection\Category;
+            foreach ($list as $category) {
+                $categoryCollection[] = array(
+                    'term' => $category->nodeValue,
+                    'scheme' => null,
+                    'label' => $category->nodeValue,
+                );
+            }
+        } else {
+            $categoryCollection = new Collection\Category;
+        }
+
+        $this->data['categories'] = $categoryCollection;
+        return $this->data['categories'];
+    }
+
+    /**
+     * Register the default namespaces for the current feed format
+     *
+     * @return void
+     */
+    protected function registerNamespaces()
+    {
+        $this->getXpath()->registerNamespace('dc10', 'http://purl.org/dc/elements/1.0/');
+        $this->getXpath()->registerNamespace('dc11', 'http://purl.org/dc/elements/1.1/');
+    }
+}

3rdparty/ZendFeed/Reader/Extension/Podcast/Entry.php

@@ -0,0 +1,180 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Extension\Podcast;
+
+use Zend\Feed\Reader\Extension;
+
+/**
+*/
+class Entry extends Extension\AbstractEntry
+{
+    /**
+     * Get the entry author
+     *
+     * @return string
+     */
+    public function getCastAuthor()
+    {
+        if (isset($this->data['author'])) {
+            return $this->data['author'];
+        }
+
+        $author = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:author)');
+
+        if (!$author) {
+            $author = null;
+        }
+
+        $this->data['author'] = $author;
+
+        return $this->data['author'];
+    }
+
+    /**
+     * Get the entry block
+     *
+     * @return string
+     */
+    public function getBlock()
+    {
+        if (isset($this->data['block'])) {
+            return $this->data['block'];
+        }
+
+        $block = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:block)');
+
+        if (!$block) {
+            $block = null;
+        }
+
+        $this->data['block'] = $block;
+
+        return $this->data['block'];
+    }
+
+    /**
+     * Get the entry duration
+     *
+     * @return string
+     */
+    public function getDuration()
+    {
+        if (isset($this->data['duration'])) {
+            return $this->data['duration'];
+        }
+
+        $duration = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:duration)');
+
+        if (!$duration) {
+            $duration = null;
+        }
+
+        $this->data['duration'] = $duration;
+
+        return $this->data['duration'];
+    }
+
+    /**
+     * Get the entry explicit
+     *
+     * @return string
+     */
+    public function getExplicit()
+    {
+        if (isset($this->data['explicit'])) {
+            return $this->data['explicit'];
+        }
+
+        $explicit = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:explicit)');
+
+        if (!$explicit) {
+            $explicit = null;
+        }
+
+        $this->data['explicit'] = $explicit;
+
+        return $this->data['explicit'];
+    }
+
+    /**
+     * Get the entry keywords
+     *
+     * @return string
+     */
+    public function getKeywords()
+    {
+        if (isset($this->data['keywords'])) {
+            return $this->data['keywords'];
+        }
+
+        $keywords = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:keywords)');
+
+        if (!$keywords) {
+            $keywords = null;
+        }
+
+        $this->data['keywords'] = $keywords;
+
+        return $this->data['keywords'];
+    }
+
+    /**
+     * Get the entry subtitle
+     *
+     * @return string
+     */
+    public function getSubtitle()
+    {
+        if (isset($this->data['subtitle'])) {
+            return $this->data['subtitle'];
+        }
+
+        $subtitle = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:subtitle)');
+
+        if (!$subtitle) {
+            $subtitle = null;
+        }
+
+        $this->data['subtitle'] = $subtitle;
+
+        return $this->data['subtitle'];
+    }
+
+    /**
+     * Get the entry summary
+     *
+     * @return string
+     */
+    public function getSummary()
+    {
+        if (isset($this->data['summary'])) {
+            return $this->data['summary'];
+        }
+
+        $summary = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:summary)');
+
+        if (!$summary) {
+            $summary = null;
+        }
+
+        $this->data['summary'] = $summary;
+
+        return $this->data['summary'];
+    }
+
+    /**
+     * Register iTunes namespace
+     *
+     */
+    protected function registerNamespaces()
+    {
+        $this->xpath->registerNamespace('itunes', 'http://www.itunes.com/dtds/podcast-1.0.dtd');
+    }
+}

3rdparty/ZendFeed/Reader/Extension/Podcast/Feed.php

@@ -0,0 +1,277 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Extension\Podcast;
+
+use DOMText;
+use Zend\Feed\Reader\Extension;
+
+/**
+*/
+class Feed extends Extension\AbstractFeed
+{
+    /**
+     * Get the entry author
+     *
+     * @return string
+     */
+    public function getCastAuthor()
+    {
+        if (isset($this->data['author'])) {
+            return $this->data['author'];
+        }
+
+        $author = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:author)');
+
+        if (!$author) {
+            $author = null;
+        }
+
+        $this->data['author'] = $author;
+
+        return $this->data['author'];
+    }
+
+    /**
+     * Get the entry block
+     *
+     * @return string
+     */
+    public function getBlock()
+    {
+        if (isset($this->data['block'])) {
+            return $this->data['block'];
+        }
+
+        $block = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:block)');
+
+        if (!$block) {
+            $block = null;
+        }
+
+        $this->data['block'] = $block;
+
+        return $this->data['block'];
+    }
+
+    /**
+     * Get the entry category
+     *
+     * @return string
+     */
+    public function getItunesCategories()
+    {
+        if (isset($this->data['categories'])) {
+            return $this->data['categories'];
+        }
+
+        $categoryList = $this->xpath->query($this->getXpathPrefix() . '/itunes:category');
+
+        $categories = array();
+
+        if ($categoryList->length > 0) {
+            foreach ($categoryList as $node) {
+                $children = null;
+
+                if ($node->childNodes->length > 0) {
+                    $children = array();
+
+                    foreach ($node->childNodes as $childNode) {
+                        if (!($childNode instanceof DOMText)) {
+                            $children[$childNode->getAttribute('text')] = null;
+                        }
+                    }
+                }
+
+                $categories[$node->getAttribute('text')] = $children;
+            }
+        }
+
+
+        if (!$categories) {
+            $categories = null;
+        }
+
+        $this->data['categories'] = $categories;
+
+        return $this->data['categories'];
+    }
+
+    /**
+     * Get the entry explicit
+     *
+     * @return string
+     */
+    public function getExplicit()
+    {
+        if (isset($this->data['explicit'])) {
+            return $this->data['explicit'];
+        }
+
+        $explicit = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:explicit)');
+
+        if (!$explicit) {
+            $explicit = null;
+        }
+
+        $this->data['explicit'] = $explicit;
+
+        return $this->data['explicit'];
+    }
+
+    /**
+     * Get the entry image
+     *
+     * @return string
+     */
+    public function getItunesImage()
+    {
+        if (isset($this->data['image'])) {
+            return $this->data['image'];
+        }
+
+        $image = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:image/@href)');
+
+        if (!$image) {
+            $image = null;
+        }
+
+        $this->data['image'] = $image;
+
+        return $this->data['image'];
+    }
+
+    /**
+     * Get the entry keywords
+     *
+     * @return string
+     */
+    public function getKeywords()
+    {
+        if (isset($this->data['keywords'])) {
+            return $this->data['keywords'];
+        }
+
+        $keywords = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:keywords)');
+
+        if (!$keywords) {
+            $keywords = null;
+        }
+
+        $this->data['keywords'] = $keywords;
+
+        return $this->data['keywords'];
+    }
+
+    /**
+     * Get the entry's new feed url
+     *
+     * @return string
+     */
+    public function getNewFeedUrl()
+    {
+        if (isset($this->data['new-feed-url'])) {
+            return $this->data['new-feed-url'];
+        }
+
+        $newFeedUrl = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:new-feed-url)');
+
+        if (!$newFeedUrl) {
+            $newFeedUrl = null;
+        }
+
+        $this->data['new-feed-url'] = $newFeedUrl;
+
+        return $this->data['new-feed-url'];
+    }
+
+    /**
+     * Get the entry owner
+     *
+     * @return string
+     */
+    public function getOwner()
+    {
+        if (isset($this->data['owner'])) {
+            return $this->data['owner'];
+        }
+
+        $owner = null;
+
+        $email = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:owner/itunes:email)');
+        $name  = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:owner/itunes:name)');
+
+        if (!empty($email)) {
+            $owner = $email . (empty($name) ? '' : ' (' . $name . ')');
+        } elseif (!empty($name)) {
+            $owner = $name;
+        }
+
+        if (!$owner) {
+            $owner = null;
+        }
+
+        $this->data['owner'] = $owner;
+
+        return $this->data['owner'];
+    }
+
+    /**
+     * Get the entry subtitle
+     *
+     * @return string
+     */
+    public function getSubtitle()
+    {
+        if (isset($this->data['subtitle'])) {
+            return $this->data['subtitle'];
+        }
+
+        $subtitle = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:subtitle)');
+
+        if (!$subtitle) {
+            $subtitle = null;
+        }
+
+        $this->data['subtitle'] = $subtitle;
+
+        return $this->data['subtitle'];
+    }
+
+    /**
+     * Get the entry summary
+     *
+     * @return string
+     */
+    public function getSummary()
+    {
+        if (isset($this->data['summary'])) {
+            return $this->data['summary'];
+        }
+
+        $summary = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:summary)');
+
+        if (!$summary) {
+            $summary = null;
+        }
+
+        $this->data['summary'] = $summary;
+
+        return $this->data['summary'];
+    }
+
+    /**
+     * Register iTunes namespace
+     *
+     */
+    protected function registerNamespaces()
+    {
+        $this->xpath->registerNamespace('itunes', 'http://www.itunes.com/dtds/podcast-1.0.dtd');
+    }
+}

3rdparty/ZendFeed/Reader/Extension/Slash/Entry.php

@@ -0,0 +1,121 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Extension\Slash;
+
+use Zend\Feed\Reader\Extension;
+
+/**
+*/
+class Entry extends Extension\AbstractEntry
+{
+    /**
+     * Get the entry section
+     *
+     * @return string|null
+     */
+    public function getSection()
+    {
+        return $this->getData('section');
+    }
+
+    /**
+     * Get the entry department
+     *
+     * @return string|null
+     */
+    public function getDepartment()
+    {
+        return $this->getData('department');
+    }
+
+    /**
+     * Get the entry hit_parade
+     *
+     * @return array
+     */
+    public function getHitParade()
+    {
+        $name = 'hit_parade';
+
+        if (isset($this->data[$name])) {
+            return $this->data[$name];
+        }
+
+        $stringParade = $this->getData($name);
+        $hitParade    = array();
+
+        if (!empty($stringParade)) {
+            $stringParade = explode(',', $stringParade);
+
+            foreach ($stringParade as $hit)
+                $hitParade[] = $hit + 0; //cast to integer
+        }
+
+        $this->data[$name] = $hitParade;
+        return $hitParade;
+    }
+
+    /**
+     * Get the entry comments
+     *
+     * @return int
+     */
+    public function getCommentCount()
+    {
+        $name = 'comments';
+
+        if (isset($this->data[$name])) {
+            return $this->data[$name];
+        }
+
+        $comments = $this->getData($name, 'string');
+
+        if (!$comments) {
+            $this->data[$name] = null;
+            return $this->data[$name];
+        }
+
+        return $comments;
+    }
+
+    /**
+     * Get the entry data specified by name
+     * @param string $name
+     * @param string $type
+     *
+     * @return mixed|null
+     */
+    protected function getData($name, $type = 'string')
+    {
+        if (array_key_exists($name, $this->data)) {
+            return $this->data[$name];
+        }
+
+        $data = $this->xpath->evaluate($type . '(' . $this->getXpathPrefix() . '/slash10:' . $name . ')');
+
+        if (!$data) {
+            $data = null;
+        }
+
+        $this->data[$name] = $data;
+
+        return $data;
+    }
+
+    /**
+     * Register Slash namespaces
+     *
+     * @return void
+     */
+    protected function registerNamespaces()
+    {
+        $this->xpath->registerNamespace('slash10', 'http://purl.org/rss/1.0/modules/slash/');
+    }
+}

3rdparty/ZendFeed/Reader/Extension/Syndication/Feed.php

@@ -0,0 +1,151 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Extension\Syndication;
+
+use DateTime;
+use Zend\Feed\Reader;
+use Zend\Feed\Reader\Extension;
+
+class Feed extends Extension\AbstractFeed
+{
+    /**
+     * Get update period
+     *
+     * @return string
+     * @throws Reader\Exception\InvalidArgumentException
+     */
+    public function getUpdatePeriod()
+    {
+        $name = 'updatePeriod';
+        $period = $this->getData($name);
+
+        if ($period === null) {
+            $this->data[$name] = 'daily';
+            return 'daily'; //Default specified by spec
+        }
+
+        switch ($period) {
+            case 'hourly':
+            case 'daily':
+            case 'weekly':
+            case 'yearly':
+                return $period;
+            default:
+                throw new Reader\Exception\InvalidArgumentException("Feed specified invalid update period: '$period'."
+                    .  " Must be one of hourly, daily, weekly or yearly"
+                );
+        }
+    }
+
+    /**
+     * Get update frequency
+     *
+     * @return int
+     */
+    public function getUpdateFrequency()
+    {
+        $name = 'updateFrequency';
+        $freq = $this->getData($name, 'number');
+
+        if (!$freq || $freq < 1) {
+            $this->data[$name] = 1;
+            return 1;
+        }
+
+        return $freq;
+    }
+
+    /**
+     * Get update frequency as ticks
+     *
+     * @return int
+     */
+    public function getUpdateFrequencyAsTicks()
+    {
+        $name = 'updateFrequency';
+        $freq = $this->getData($name, 'number');
+
+        if (!$freq || $freq < 1) {
+            $this->data[$name] = 1;
+            $freq = 1;
+        }
+
+        $period = $this->getUpdatePeriod();
+        $ticks = 1;
+
+        switch ($period) {
+            case 'yearly':
+                $ticks *= 52; //TODO: fix generalisation, how?
+                // no break
+            case 'weekly':
+                $ticks *= 7;
+                // no break
+            case 'daily':
+                $ticks *= 24;
+                // no break
+            case 'hourly':
+                $ticks *= 3600;
+                break;
+            default: //Never arrive here, exception thrown in getPeriod()
+                break;
+        }
+
+        return $ticks / $freq;
+    }
+
+    /**
+     * Get update base
+     *
+     * @return DateTime|null
+     */
+    public function getUpdateBase()
+    {
+        $updateBase = $this->getData('updateBase');
+        $date = null;
+        if ($updateBase) {
+            $date = DateTime::createFromFormat(DateTime::W3C, $updateBase);
+        }
+        return $date;
+    }
+
+    /**
+     * Get the entry data specified by name
+     *
+     * @param string $name
+     * @param string $type
+     * @return mixed|null
+     */
+    private function getData($name, $type = 'string')
+    {
+        if (array_key_exists($name, $this->data)) {
+            return $this->data[$name];
+        }
+
+        $data = $this->xpath->evaluate($type . '(' . $this->getXpathPrefix() . '/syn10:' . $name . ')');
+
+        if (!$data) {
+            $data = null;
+        }
+
+        $this->data[$name] = $data;
+
+        return $data;
+    }
+
+    /**
+     * Register Syndication namespaces
+     *
+     * @return void
+     */
+    protected function registerNamespaces()
+    {
+        $this->xpath->registerNamespace('syn10', 'http://purl.org/rss/1.0/modules/syndication/');
+    }
+}

3rdparty/ZendFeed/Reader/Extension/Thread/Entry.php

@@ -0,0 +1,72 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Extension\Thread;
+
+use Zend\Feed\Reader\Extension;
+
+/**
+*/
+class Entry extends Extension\AbstractEntry
+{
+    /**
+     * Get the "in-reply-to" value
+     *
+     * @return string
+     */
+    public function getInReplyTo()
+    {
+        // TODO: to be implemented
+    }
+
+    // TODO: Implement "replies" and "updated" constructs from standard
+
+    /**
+     * Get the total number of threaded responses (i.e comments)
+     *
+     * @return int|null
+     */
+    public function getCommentCount()
+    {
+        return $this->getData('total');
+    }
+
+    /**
+     * Get the entry data specified by name
+     *
+     * @param  string $name
+     * @return mixed|null
+     */
+    protected function getData($name)
+    {
+        if (array_key_exists($name, $this->data)) {
+            return $this->data[$name];
+        }
+
+        $data = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/thread10:' . $name . ')');
+
+        if (!$data) {
+            $data = null;
+        }
+
+        $this->data[$name] = $data;
+
+        return $data;
+    }
+
+    /**
+     * Register Atom Thread Extension 1.0 namespace
+     *
+     * @return void
+     */
+    protected function registerNamespaces()
+    {
+        $this->xpath->registerNamespace('thread10', 'http://purl.org/syndication/thread/1.0');
+    }
+}

3rdparty/ZendFeed/Reader/Extension/WellFormedWeb/Entry.php

@@ -0,0 +1,50 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Extension\WellFormedWeb;
+
+use Zend\Feed\Reader\Extension;
+
+/**
+*/
+class Entry extends Extension\AbstractEntry
+{
+    /**
+     * Get the entry comment Uri
+     *
+     * @return string|null
+     */
+    public function getCommentFeedLink()
+    {
+        $name = 'commentRss';
+        if (array_key_exists($name, $this->data)) {
+            return $this->data[$name];
+        }
+
+        $data = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/wfw:' . $name . ')');
+
+        if (!$data) {
+            $data = null;
+        }
+
+        $this->data[$name] = $data;
+
+        return $data;
+    }
+
+    /**
+     * Register Slash namespaces
+     *
+     * @return void
+     */
+    protected function registerNamespaces()
+    {
+        $this->xpath->registerNamespace('wfw', 'http://wellformedweb.org/CommentAPI/');
+    }
+}

3rdparty/ZendFeed/Reader/ExtensionManager.php

@@ -0,0 +1,80 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader;
+
+/**
+ * Default implementation of ExtensionManagerInterface
+ *
+ * Decorator of ExtensionPluginManager.
+ */
+class ExtensionManager implements ExtensionManagerInterface
+{
+    protected $pluginManager;
+
+    /**
+     * Constructor
+     *
+     * Seeds the extension manager with a plugin manager; if none provided,
+     * creates an instance.
+     *
+     * @param  null|ExtensionPluginManager $pluginManager
+     */
+    public function __construct(ExtensionPluginManager $pluginManager = null)
+    {
+        if (null === $pluginManager) {
+            $pluginManager = new ExtensionPluginManager();
+        }
+        $this->pluginManager = $pluginManager;
+    }
+
+    /**
+     * Method overloading
+     *
+     * Proxy to composed ExtensionPluginManager instance.
+     *
+     * @param  string $method
+     * @param  array $args
+     * @return mixed
+     * @throws Exception\BadMethodCallException
+     */
+    public function __call($method, $args)
+    {
+        if (!method_exists($this->pluginManager, $method)) {
+            throw new Exception\BadMethodCallException(sprintf(
+                'Method by name of %s does not exist in %s',
+                $method,
+                __CLASS__
+            ));
+        }
+        return call_user_func_array(array($this->pluginManager, $method), $args);
+    }
+
+    /**
+     * Get the named extension
+     *
+     * @param  string $name
+     * @return Extension\AbstractEntry|Extension\AbstractFeed
+     */
+    public function get($name)
+    {
+        return $this->pluginManager->get($name);
+    }
+
+    /**
+     * Do we have the named extension?
+     *
+     * @param  string $name
+     * @return bool
+     */
+    public function has($name)
+    {
+        return $this->pluginManager->has($name);
+    }
+}

3rdparty/ZendFeed/Reader/ExtensionManagerInterface.php

@@ -0,0 +1,29 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader;
+
+interface ExtensionManagerInterface
+{
+    /**
+     * Do we have the extension?
+     *
+     * @param  string $extension
+     * @return bool
+     */
+    public function has($extension);
+
+    /**
+     * Retrieve the extension
+     *
+     * @param  string $extension
+     * @return mixed
+     */
+    public function get($extension);
+}

3rdparty/ZendFeed/Reader/ExtensionPluginManager.php

@@ -0,0 +1,77 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader;
+
+use Zend\ServiceManager\AbstractPluginManager;
+
+/**
+ * Plugin manager implementation for feed reader extensions based on the
+ * AbstractPluginManager.
+ *
+ * Validation checks that we have an Extension\AbstractEntry or
+ * Extension\AbstractFeed.
+ */
+class ExtensionPluginManager extends AbstractPluginManager
+{
+    /**
+     * Default set of extension classes
+     *
+     * @var array
+     */
+    protected $invokableClasses = array(
+        'atomentry'            => 'Zend\Feed\Reader\Extension\Atom\Entry',
+        'atomfeed'             => 'Zend\Feed\Reader\Extension\Atom\Feed',
+        'contententry'         => 'Zend\Feed\Reader\Extension\Content\Entry',
+        'creativecommonsentry' => 'Zend\Feed\Reader\Extension\CreativeCommons\Entry',
+        'creativecommonsfeed'  => 'Zend\Feed\Reader\Extension\CreativeCommons\Feed',
+        'dublincoreentry'      => 'Zend\Feed\Reader\Extension\DublinCore\Entry',
+        'dublincorefeed'       => 'Zend\Feed\Reader\Extension\DublinCore\Feed',
+        'podcastentry'         => 'Zend\Feed\Reader\Extension\Podcast\Entry',
+        'podcastfeed'          => 'Zend\Feed\Reader\Extension\Podcast\Feed',
+        'slashentry'           => 'Zend\Feed\Reader\Extension\Slash\Entry',
+        'syndicationfeed'      => 'Zend\Feed\Reader\Extension\Syndication\Feed',
+        'threadentry'          => 'Zend\Feed\Reader\Extension\Thread\Entry',
+        'wellformedwebentry'   => 'Zend\Feed\Reader\Extension\WellFormedWeb\Entry',
+    );
+
+    /**
+     * Do not share instances
+     *
+     * @var bool
+     */
+    protected $shareByDefault = false;
+
+    /**
+     * Validate the plugin
+     *
+     * Checks that the extension loaded is of a valid type.
+     *
+     * @param  mixed $plugin
+     * @return void
+     * @throws Exception\InvalidArgumentException if invalid
+     */
+    public function validatePlugin($plugin)
+    {
+        if ($plugin instanceof Extension\AbstractEntry
+            || $plugin instanceof Extension\AbstractFeed
+        ) {
+            // we're okay
+            return;
+        }
+
+        throw new Exception\InvalidArgumentException(sprintf(
+            'Plugin of type %s is invalid; must implement %s\Extension\AbstractFeed '
+            . 'or %s\Extension\AbstractEntry',
+            (is_object($plugin) ? get_class($plugin) : gettype($plugin)),
+            __NAMESPACE__,
+            __NAMESPACE__
+        ));
+    }
+}

3rdparty/ZendFeed/Reader/Feed/AbstractFeed.php

@@ -0,0 +1,307 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Feed;
+
+use DOMDocument;
+use DOMElement;
+use DOMXPath;
+use Zend\Feed\Reader;
+use Zend\Feed\Reader\Exception;
+
+/**
+*/
+abstract class AbstractFeed implements FeedInterface
+{
+    /**
+     * Parsed feed data
+     *
+     * @var array
+     */
+    protected $data = array();
+
+    /**
+     * Parsed feed data in the shape of a DOMDocument
+     *
+     * @var DOMDocument
+     */
+    protected $domDocument = null;
+
+    /**
+     * An array of parsed feed entries
+     *
+     * @var array
+     */
+    protected $entries = array();
+
+    /**
+     * A pointer for the iterator to keep track of the entries array
+     *
+     * @var int
+     */
+    protected $entriesKey = 0;
+
+    /**
+     * The base XPath query used to retrieve feed data
+     *
+     * @var DOMXPath
+     */
+    protected $xpath = null;
+
+    /**
+     * Array of loaded extensions
+     *
+     * @var array
+     */
+    protected $extensions = array();
+
+    /**
+     * Original Source URI (set if imported from a URI)
+     *
+     * @var string
+     */
+    protected $originalSourceUri = null;
+
+    /**
+     * Constructor
+     *
+     * @param DOMDocument $domDocument The DOM object for the feed's XML
+     * @param string $type Feed type
+     */
+    public function __construct(DOMDocument $domDocument, $type = null)
+    {
+        $this->domDocument = $domDocument;
+        $this->xpath = new DOMXPath($this->domDocument);
+
+        if ($type !== null) {
+            $this->data['type'] = $type;
+        } else {
+            $this->data['type'] = Reader\Reader::detectType($this->domDocument);
+        }
+        $this->registerNamespaces();
+        $this->indexEntries();
+        $this->loadExtensions();
+    }
+
+    /**
+     * Set an original source URI for the feed being parsed. This value
+     * is returned from getFeedLink() method if the feed does not carry
+     * a self-referencing URI.
+     *
+     * @param string $uri
+     */
+    public function setOriginalSourceUri($uri)
+    {
+        $this->originalSourceUri = $uri;
+    }
+
+    /**
+     * Get an original source URI for the feed being parsed. Returns null if
+     * unset or the feed was not imported from a URI.
+     *
+     * @return string|null
+     */
+    public function getOriginalSourceUri()
+    {
+        return $this->originalSourceUri;
+    }
+
+    /**
+     * Get the number of feed entries.
+     * Required by the Iterator interface.
+     *
+     * @return int
+     */
+    public function count()
+    {
+        return count($this->entries);
+    }
+
+    /**
+     * Return the current entry
+     *
+     * @return \Zend\Feed\Reader\Entry\EntryInterface
+     */
+    public function current()
+    {
+        if (substr($this->getType(), 0, 3) == 'rss') {
+            $reader = new Reader\Entry\Rss($this->entries[$this->key()], $this->key(), $this->getType());
+        } else {
+            $reader = new Reader\Entry\Atom($this->entries[$this->key()], $this->key(), $this->getType());
+        }
+
+        $reader->setXpath($this->xpath);
+
+        return $reader;
+    }
+
+    /**
+     * Get the DOM
+     *
+     * @return DOMDocument
+     */
+    public function getDomDocument()
+    {
+        return $this->domDocument;
+    }
+
+    /**
+     * Get the Feed's encoding
+     *
+     * @return string
+     */
+    public function getEncoding()
+    {
+        $assumed = $this->getDomDocument()->encoding;
+        if (empty($assumed)) {
+            $assumed = 'UTF-8';
+        }
+        return $assumed;
+    }
+
+    /**
+     * Get feed as xml
+     *
+     * @return string
+     */
+    public function saveXml()
+    {
+          return $this->getDomDocument()->saveXml();
+    }
+
+    /**
+     * Get the DOMElement representing the items/feed element
+     *
+     * @return DOMElement
+     */
+    public function getElement()
+    {
+          return $this->getDomDocument()->documentElement;
+    }
+
+    /**
+     * Get the DOMXPath object for this feed
+     *
+     * @return DOMXPath
+     */
+    public function getXpath()
+    {
+          return $this->xpath;
+    }
+
+    /**
+     * Get the feed type
+     *
+     * @return string
+     */
+    public function getType()
+    {
+        return $this->data['type'];
+    }
+
+    /**
+     * Return the current feed key
+     *
+     * @return int
+     */
+    public function key()
+    {
+        return $this->entriesKey;
+    }
+
+    /**
+     * Move the feed pointer forward
+     *
+     */
+    public function next()
+    {
+        ++$this->entriesKey;
+    }
+
+    /**
+     * Reset the pointer in the feed object
+     *
+     */
+    public function rewind()
+    {
+        $this->entriesKey = 0;
+    }
+
+    /**
+     * Check to see if the iterator is still valid
+     *
+     * @return bool
+     */
+    public function valid()
+    {
+        return 0 <= $this->entriesKey && $this->entriesKey < $this->count();
+    }
+
+    public function getExtensions()
+    {
+        return $this->extensions;
+    }
+
+    public function __call($method, $args)
+    {
+        foreach ($this->extensions as $extension) {
+            if (method_exists($extension, $method)) {
+                return call_user_func_array(array($extension, $method), $args);
+            }
+        }
+        throw new Exception\BadMethodCallException('Method: ' . $method
+        . 'does not exist and could not be located on a registered Extension');
+    }
+
+    /**
+     * Return an Extension object with the matching name (postfixed with _Feed)
+     *
+     * @param string $name
+     * @return \Zend\Feed\Reader\Extension\AbstractFeed
+     */
+    public function getExtension($name)
+    {
+        if (array_key_exists($name . '\\Feed', $this->extensions)) {
+            return $this->extensions[$name . '\\Feed'];
+        }
+        return null;
+    }
+
+    protected function loadExtensions()
+    {
+        $all     = Reader\Reader::getExtensions();
+        $manager = Reader\Reader::getExtensionManager();
+        $feed    = $all['feed'];
+        foreach ($feed as $extension) {
+            if (in_array($extension, $all['core'])) {
+                continue;
+            }
+            if (!$manager->has($extension)) {
+                throw new Exception\RuntimeException(sprintf('Unable to load extension "%s"; cannot find class', $extension));
+            }
+            $plugin = $manager->get($extension);
+            $plugin->setDomDocument($this->getDomDocument());
+            $plugin->setType($this->data['type']);
+            $plugin->setXpath($this->xpath);
+            $this->extensions[$extension] = $plugin;
+        }
+    }
+
+    /**
+     * Read all entries to the internal entries array
+     *
+     */
+    abstract protected function indexEntries();
+
+    /**
+     * Register the default namespaces for the current feed format
+     *
+     */
+    abstract protected function registerNamespaces();
+}

3rdparty/ZendFeed/Reader/Feed/Atom.php

@@ -0,0 +1,409 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Feed;
+
+use DOMDocument;
+use Zend\Feed\Reader;
+
+/**
+*/
+class Atom extends AbstractFeed
+{
+
+    /**
+     * Constructor
+     *
+     * @param  DOMDocument $dom
+     * @param  string $type
+     */
+    public function __construct(DOMDocument $dom, $type = null)
+    {
+        parent::__construct($dom, $type);
+        $manager = Reader\Reader::getExtensionManager();
+
+        $atomFeed = $manager->get('Atom\Feed');
+        $atomFeed->setDomDocument($dom);
+        $atomFeed->setType($this->data['type']);
+        $atomFeed->setXpath($this->xpath);
+        $this->extensions['Atom\\Feed'] = $atomFeed;
+
+        $atomFeed = $manager->get('DublinCore\Feed');
+        $atomFeed->setDomDocument($dom);
+        $atomFeed->setType($this->data['type']);
+        $atomFeed->setXpath($this->xpath);
+        $this->extensions['DublinCore\\Feed'] = $atomFeed;
+
+        foreach ($this->extensions as $extension) {
+            $extension->setXpathPrefix('/atom:feed');
+        }
+    }
+
+    /**
+     * Get a single author
+     *
+     * @param  int $index
+     * @return string|null
+     */
+    public function getAuthor($index = 0)
+    {
+        $authors = $this->getAuthors();
+
+        if (isset($authors[$index])) {
+            return $authors[$index];
+        }
+
+        return null;
+    }
+
+    /**
+     * Get an array with feed authors
+     *
+     * @return array
+     */
+    public function getAuthors()
+    {
+        if (array_key_exists('authors', $this->data)) {
+            return $this->data['authors'];
+        }
+
+        $authors = $this->getExtension('Atom')->getAuthors();
+
+        $this->data['authors'] = $authors;
+
+        return $this->data['authors'];
+    }
+
+    /**
+     * Get the copyright entry
+     *
+     * @return string|null
+     */
+    public function getCopyright()
+    {
+        if (array_key_exists('copyright', $this->data)) {
+            return $this->data['copyright'];
+        }
+
+        $copyright = $this->getExtension('Atom')->getCopyright();
+
+        if (!$copyright) {
+            $copyright = null;
+        }
+
+        $this->data['copyright'] = $copyright;
+
+        return $this->data['copyright'];
+    }
+
+    /**
+     * Get the feed creation date
+     *
+     * @return string|null
+     */
+    public function getDateCreated()
+    {
+        if (array_key_exists('datecreated', $this->data)) {
+            return $this->data['datecreated'];
+        }
+
+        $dateCreated = $this->getExtension('Atom')->getDateCreated();
+
+        if (!$dateCreated) {
+            $dateCreated = null;
+        }
+
+        $this->data['datecreated'] = $dateCreated;
+
+        return $this->data['datecreated'];
+    }
+
+    /**
+     * Get the feed modification date
+     *
+     * @return string|null
+     */
+    public function getDateModified()
+    {
+        if (array_key_exists('datemodified', $this->data)) {
+            return $this->data['datemodified'];
+        }
+
+        $dateModified = $this->getExtension('Atom')->getDateModified();
+
+        if (!$dateModified) {
+            $dateModified = null;
+        }
+
+        $this->data['datemodified'] = $dateModified;
+
+        return $this->data['datemodified'];
+    }
+
+    /**
+     * Get the feed lastBuild date. This is not implemented in Atom.
+     *
+     * @return string|null
+     */
+    public function getLastBuildDate()
+    {
+        return null;
+    }
+
+    /**
+     * Get the feed description
+     *
+     * @return string|null
+     */
+    public function getDescription()
+    {
+        if (array_key_exists('description', $this->data)) {
+            return $this->data['description'];
+        }
+
+        $description = $this->getExtension('Atom')->getDescription();
+
+        if (!$description) {
+            $description = null;
+        }
+
+        $this->data['description'] = $description;
+
+        return $this->data['description'];
+    }
+
+    /**
+     * Get the feed generator entry
+     *
+     * @return string|null
+     */
+    public function getGenerator()
+    {
+        if (array_key_exists('generator', $this->data)) {
+            return $this->data['generator'];
+        }
+
+        $generator = $this->getExtension('Atom')->getGenerator();
+
+        $this->data['generator'] = $generator;
+
+        return $this->data['generator'];
+    }
+
+    /**
+     * Get the feed ID
+     *
+     * @return string|null
+     */
+    public function getId()
+    {
+        if (array_key_exists('id', $this->data)) {
+            return $this->data['id'];
+        }
+
+        $id = $this->getExtension('Atom')->getId();
+
+        $this->data['id'] = $id;
+
+        return $this->data['id'];
+    }
+
+    /**
+     * Get the feed language
+     *
+     * @return string|null
+     */
+    public function getLanguage()
+    {
+        if (array_key_exists('language', $this->data)) {
+            return $this->data['language'];
+        }
+
+        $language = $this->getExtension('Atom')->getLanguage();
+
+        if (!$language) {
+            $language = $this->xpath->evaluate('string(//@xml:lang[1])');
+        }
+
+        if (!$language) {
+            $language = null;
+        }
+
+        $this->data['language'] = $language;
+
+        return $this->data['language'];
+    }
+
+    /**
+     * Get a link to the source website
+     *
+     * @return string|null
+     */
+    public function getBaseUrl()
+    {
+        if (array_key_exists('baseUrl', $this->data)) {
+            return $this->data['baseUrl'];
+        }
+
+        $baseUrl = $this->getExtension('Atom')->getBaseUrl();
+
+        $this->data['baseUrl'] = $baseUrl;
+
+        return $this->data['baseUrl'];
+    }
+
+    /**
+     * Get a link to the source website
+     *
+     * @return string|null
+     */
+    public function getLink()
+    {
+        if (array_key_exists('link', $this->data)) {
+            return $this->data['link'];
+        }
+
+        $link = $this->getExtension('Atom')->getLink();
+
+        $this->data['link'] = $link;
+
+        return $this->data['link'];
+    }
+
+    /**
+     * Get feed image data
+     *
+     * @return array|null
+     */
+    public function getImage()
+    {
+        if (array_key_exists('image', $this->data)) {
+            return $this->data['image'];
+        }
+
+        $link = $this->getExtension('Atom')->getImage();
+
+        $this->data['image'] = $link;
+
+        return $this->data['image'];
+    }
+
+    /**
+     * Get a link to the feed's XML Url
+     *
+     * @return string|null
+     */
+    public function getFeedLink()
+    {
+        if (array_key_exists('feedlink', $this->data)) {
+            return $this->data['feedlink'];
+        }
+
+        $link = $this->getExtension('Atom')->getFeedLink();
+
+        if ($link === null || empty($link)) {
+            $link = $this->getOriginalSourceUri();
+        }
+
+        $this->data['feedlink'] = $link;
+
+        return $this->data['feedlink'];
+    }
+
+    /**
+     * Get the feed title
+     *
+     * @return string|null
+     */
+    public function getTitle()
+    {
+        if (array_key_exists('title', $this->data)) {
+            return $this->data['title'];
+        }
+
+        $title = $this->getExtension('Atom')->getTitle();
+
+        $this->data['title'] = $title;
+
+        return $this->data['title'];
+    }
+
+    /**
+     * Get an array of any supported Pusubhubbub endpoints
+     *
+     * @return array|null
+     */
+    public function getHubs()
+    {
+        if (array_key_exists('hubs', $this->data)) {
+            return $this->data['hubs'];
+        }
+
+        $hubs = $this->getExtension('Atom')->getHubs();
+
+        $this->data['hubs'] = $hubs;
+
+        return $this->data['hubs'];
+    }
+
+    /**
+     * Get all categories
+     *
+     * @return Reader\Collection\Category
+     */
+    public function getCategories()
+    {
+        if (array_key_exists('categories', $this->data)) {
+            return $this->data['categories'];
+        }
+
+        $categoryCollection = $this->getExtension('Atom')->getCategories();
+
+        if (count($categoryCollection) == 0) {
+            $categoryCollection = $this->getExtension('DublinCore')->getCategories();
+        }
+
+        $this->data['categories'] = $categoryCollection;
+
+        return $this->data['categories'];
+    }
+
+    /**
+     * Read all entries to the internal entries array
+     *
+     * @return void
+     */
+    protected function indexEntries()
+    {
+        if ($this->getType() == Reader\Reader::TYPE_ATOM_10 ||
+            $this->getType() == Reader\Reader::TYPE_ATOM_03) {
+            $entries = $this->xpath->evaluate('//atom:entry');
+
+            foreach ($entries as $index => $entry) {
+                $this->entries[$index] = $entry;
+            }
+        }
+    }
+
+    /**
+     * Register the default namespaces for the current feed format
+     *
+     */
+    protected function registerNamespaces()
+    {
+        switch ($this->data['type']) {
+            case Reader\Reader::TYPE_ATOM_03:
+                $this->xpath->registerNamespace('atom', Reader\Reader::NAMESPACE_ATOM_03);
+                break;
+            case Reader\Reader::TYPE_ATOM_10:
+            default:
+                $this->xpath->registerNamespace('atom', Reader\Reader::NAMESPACE_ATOM_10);
+        }
+    }
+}

3rdparty/ZendFeed/Reader/Feed/Atom/Source.php

@@ -0,0 +1,94 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Feed\Atom;
+
+use DOMElement;
+use DOMXPath;
+use Zend\Feed\Reader;
+use Zend\Feed\Reader\Feed;
+
+/**
+*/
+class Source extends Feed\Atom
+{
+
+    /**
+     * Constructor: Create a Source object which is largely just a normal
+     * Zend\Feed\Reader\AbstractFeed object only designed to retrieve feed level
+     * metadata from an Atom entry's source element.
+     *
+     * @param DOMElement $source
+     * @param string $xpathPrefix Passed from parent Entry object
+     * @param string $type Nearly always Atom 1.0
+     */
+    public function __construct(DOMElement $source, $xpathPrefix, $type = Reader\Reader::TYPE_ATOM_10)
+    {
+        $this->domDocument = $source->ownerDocument;
+        $this->xpath = new DOMXPath($this->domDocument);
+        $this->data['type'] = $type;
+        $this->registerNamespaces();
+        $this->loadExtensions();
+
+        $manager = Reader\Reader::getExtensionManager();
+        $extensions = array('Atom\Feed', 'DublinCore\Feed');
+
+        foreach ($extensions as $name) {
+            $extension = $manager->get($name);
+            $extension->setDomDocument($this->domDocument);
+            $extension->setType($this->data['type']);
+            $extension->setXpath($this->xpath);
+            $this->extensions[$name] = $extension;
+        }
+
+        foreach ($this->extensions as $extension) {
+            $extension->setXpathPrefix(rtrim($xpathPrefix, '/') . '/atom:source');
+        }
+    }
+
+    /**
+     * Since this is not an Entry carrier but a vehicle for Feed metadata, any
+     * applicable Entry methods are stubbed out and do nothing.
+     */
+
+    /**
+     * @return void
+     */
+    public function count() {}
+
+    /**
+     * @return void
+     */
+    public function current() {}
+
+    /**
+     * @return void
+     */
+    public function key() {}
+
+    /**
+     * @return void
+     */
+    public function next() {}
+
+    /**
+     * @return void
+     */
+    public function rewind() {}
+
+    /**
+     * @return void
+     */
+    public function valid() {}
+
+    /**
+     * @return void
+     */
+    protected function indexEntries() {}
+}

3rdparty/ZendFeed/Reader/Feed/FeedInterface.php

@@ -0,0 +1,111 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Feed;
+
+use Countable;
+use Iterator;
+
+/**
+*/
+interface FeedInterface extends Iterator, Countable
+{
+    /**
+     * Get a single author
+     *
+     * @param  int $index
+     * @return string|null
+     */
+    public function getAuthor($index = 0);
+
+    /**
+     * Get an array with feed authors
+     *
+     * @return array
+     */
+    public function getAuthors();
+
+    /**
+     * Get the copyright entry
+     *
+     * @return string|null
+     */
+    public function getCopyright();
+
+    /**
+     * Get the feed creation date
+     *
+     * @return string|null
+     */
+    public function getDateCreated();
+
+    /**
+     * Get the feed modification date
+     *
+     * @return string|null
+     */
+    public function getDateModified();
+
+    /**
+     * Get the feed description
+     *
+     * @return string|null
+     */
+    public function getDescription();
+
+    /**
+     * Get the feed generator entry
+     *
+     * @return string|null
+     */
+    public function getGenerator();
+
+    /**
+     * Get the feed ID
+     *
+     * @return string|null
+     */
+    public function getId();
+
+    /**
+     * Get the feed language
+     *
+     * @return string|null
+     */
+    public function getLanguage();
+
+    /**
+     * Get a link to the HTML source
+     *
+     * @return string|null
+     */
+    public function getLink();
+
+    /**
+     * Get a link to the XML feed
+     *
+     * @return string|null
+     */
+    public function getFeedLink();
+
+    /**
+     * Get the feed title
+     *
+     * @return string|null
+     */
+    public function getTitle();
+
+    /**
+     * Get all categories
+     *
+     * @return \Zend\Feed\Reader\Collection\Category
+     */
+    public function getCategories();
+
+}

3rdparty/ZendFeed/Reader/Feed/Rss.php

@@ -0,0 +1,707 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Feed;
+
+use DateTime;
+use DOMDocument;
+use Zend\Feed\Reader;
+use Zend\Feed\Reader\Collection;
+use Zend\Feed\Reader\Exception;
+
+/**
+*/
+class Rss extends AbstractFeed
+{
+
+    /**
+     * Constructor
+     *
+     * @param  DOMDocument $dom
+     * @param  string $type
+     */
+    public function __construct(DOMDocument $dom, $type = null)
+    {
+        parent::__construct($dom, $type);
+
+        $manager = Reader\Reader::getExtensionManager();
+
+        $feed = $manager->get('DublinCore\Feed');
+        $feed->setDomDocument($dom);
+        $feed->setType($this->data['type']);
+        $feed->setXpath($this->xpath);
+        $this->extensions['DublinCore\Feed'] = $feed;
+
+        $feed = $manager->get('Atom\Feed');
+        $feed->setDomDocument($dom);
+        $feed->setType($this->data['type']);
+        $feed->setXpath($this->xpath);
+        $this->extensions['Atom\Feed'] = $feed;
+
+        if ($this->getType() !== Reader\Reader::TYPE_RSS_10
+            && $this->getType() !== Reader\Reader::TYPE_RSS_090
+        ) {
+            $xpathPrefix = '/rss/channel';
+        } else {
+            $xpathPrefix = '/rdf:RDF/rss:channel';
+        }
+        foreach ($this->extensions as $extension) {
+            $extension->setXpathPrefix($xpathPrefix);
+        }
+    }
+
+    /**
+     * Get a single author
+     *
+     * @param  int $index
+     * @return string|null
+     */
+    public function getAuthor($index = 0)
+    {
+        $authors = $this->getAuthors();
+
+        if (isset($authors[$index])) {
+            return $authors[$index];
+        }
+
+        return null;
+    }
+
+    /**
+     * Get an array with feed authors
+     *
+     * @return array
+     */
+    public function getAuthors()
+    {
+        if (array_key_exists('authors', $this->data)) {
+            return $this->data['authors'];
+        }
+
+        $authors = array();
+        $authorsDc = $this->getExtension('DublinCore')->getAuthors();
+        if (!empty($authorsDc)) {
+            foreach ($authorsDc as $author) {
+                $authors[] = array(
+                    'name' => $author['name']
+                );
+            }
+        }
+
+        /**
+         * Technically RSS doesn't specific author element use at the feed level
+         * but it's supported on a "just in case" basis.
+         */
+        if ($this->getType() !== Reader\Reader::TYPE_RSS_10
+        && $this->getType() !== Reader\Reader::TYPE_RSS_090) {
+            $list = $this->xpath->query('//author');
+        } else {
+            $list = $this->xpath->query('//rss:author');
+        }
+        if ($list->length) {
+            foreach ($list as $author) {
+                $string = trim($author->nodeValue);
+                $email = null;
+                $name = null;
+                $data = array();
+                // Pretty rough parsing - but it's a catchall
+                if (preg_match("/^.*@[^ ]*/", $string, $matches)) {
+                    $data['email'] = trim($matches[0]);
+                    if (preg_match("/\((.*)\)$/", $string, $matches)) {
+                        $data['name'] = $matches[1];
+                    }
+                    $authors[] = $data;
+                }
+            }
+        }
+
+        if (count($authors) == 0) {
+            $authors = $this->getExtension('Atom')->getAuthors();
+        } else {
+            $authors = new Reader\Collection\Author(
+                Reader\Reader::arrayUnique($authors)
+            );
+        }
+
+        if (count($authors) == 0) {
+            $authors = null;
+        }
+
+        $this->data['authors'] = $authors;
+
+        return $this->data['authors'];
+    }
+
+    /**
+     * Get the copyright entry
+     *
+     * @return string|null
+     */
+    public function getCopyright()
+    {
+        if (array_key_exists('copyright', $this->data)) {
+            return $this->data['copyright'];
+        }
+
+        $copyright = null;
+
+        if ($this->getType() !== Reader\Reader::TYPE_RSS_10 &&
+            $this->getType() !== Reader\Reader::TYPE_RSS_090) {
+            $copyright = $this->xpath->evaluate('string(/rss/channel/copyright)');
+        }
+
+        if (!$copyright && $this->getExtension('DublinCore') !== null) {
+            $copyright = $this->getExtension('DublinCore')->getCopyright();
+        }
+
+        if (empty($copyright)) {
+            $copyright = $this->getExtension('Atom')->getCopyright();
+        }
+
+        if (!$copyright) {
+            $copyright = null;
+        }
+
+        $this->data['copyright'] = $copyright;
+
+        return $this->data['copyright'];
+    }
+
+    /**
+     * Get the feed creation date
+     *
+     * @return string|null
+     */
+    public function getDateCreated()
+    {
+        return $this->getDateModified();
+    }
+
+    /**
+     * Get the feed modification date
+     *
+     * @return DateTime
+     * @throws Exception\RuntimeException
+     */
+    public function getDateModified()
+    {
+        if (array_key_exists('datemodified', $this->data)) {
+            return $this->data['datemodified'];
+        }
+
+        $dateModified = null;
+        $date = null;
+
+        if ($this->getType() !== Reader\Reader::TYPE_RSS_10 &&
+            $this->getType() !== Reader\Reader::TYPE_RSS_090) {
+            $dateModified = $this->xpath->evaluate('string(/rss/channel/pubDate)');
+            if (!$dateModified) {
+                $dateModified = $this->xpath->evaluate('string(/rss/channel/lastBuildDate)');
+            }
+            if ($dateModified) {
+                $dateModifiedParsed = strtotime($dateModified);
+                if ($dateModifiedParsed) {
+                    $date = new DateTime('@' . $dateModifiedParsed);
+                } else {
+                    $dateStandards = array(DateTime::RSS, DateTime::RFC822,
+                                           DateTime::RFC2822, null);
+                    foreach ($dateStandards as $standard) {
+                        try {
+                            $date = DateTime::createFromFormat($standard, $dateModified);
+                            break;
+                        } catch (\Exception $e) {
+                            if ($standard == null) {
+                                throw new Exception\RuntimeException(
+                                    'Could not load date due to unrecognised'
+                                    .' format (should follow RFC 822 or 2822):'
+                                    . $e->getMessage(),
+                                    0, $e
+                                );
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
+        if (!$date) {
+            $date = $this->getExtension('DublinCore')->getDate();
+        }
+
+        if (!$date) {
+            $date = $this->getExtension('Atom')->getDateModified();
+        }
+
+        if (!$date) {
+            $date = null;
+        }
+
+        $this->data['datemodified'] = $date;
+
+        return $this->data['datemodified'];
+    }
+
+    /**
+     * Get the feed lastBuild date
+     *
+     * @throws Exception\RuntimeException
+     * @return DateTime
+     */
+    public function getLastBuildDate()
+    {
+        if (array_key_exists('lastBuildDate', $this->data)) {
+            return $this->data['lastBuildDate'];
+        }
+
+        $lastBuildDate = null;
+        $date = null;
+
+        if ($this->getType() !== Reader\Reader::TYPE_RSS_10 &&
+            $this->getType() !== Reader\Reader::TYPE_RSS_090) {
+            $lastBuildDate = $this->xpath->evaluate('string(/rss/channel/lastBuildDate)');
+            if ($lastBuildDate) {
+                $lastBuildDateParsed = strtotime($lastBuildDate);
+                if ($lastBuildDateParsed) {
+                    $date = new DateTime('@' . $lastBuildDateParsed);
+                } else {
+                    $dateStandards = array(DateTime::RSS, DateTime::RFC822,
+                                           DateTime::RFC2822, null);
+                    foreach ($dateStandards as $standard) {
+                        try {
+                            $date = DateTime::createFromFormat($standard, $lastBuildDateParsed);
+                            break;
+                        } catch (\Exception $e) {
+                            if ($standard == null) {
+                                throw new Exception\RuntimeException(
+                                    'Could not load date due to unrecognised'
+                                    .' format (should follow RFC 822 or 2822):'
+                                    . $e->getMessage(),
+                                    0, $e
+                                );
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
+        if (!$date) {
+            $date = null;
+        }
+
+        $this->data['lastBuildDate'] = $date;
+
+        return $this->data['lastBuildDate'];
+    }
+
+    /**
+     * Get the feed description
+     *
+     * @return string|null
+     */
+    public function getDescription()
+    {
+        if (array_key_exists('description', $this->data)) {
+            return $this->data['description'];
+        }
+
+        $description = null;
+
+        if ($this->getType() !== Reader\Reader::TYPE_RSS_10 &&
+            $this->getType() !== Reader\Reader::TYPE_RSS_090) {
+            $description = $this->xpath->evaluate('string(/rss/channel/description)');
+        } else {
+            $description = $this->xpath->evaluate('string(/rdf:RDF/rss:channel/rss:description)');
+        }
+
+        if (!$description && $this->getExtension('DublinCore') !== null) {
+            $description = $this->getExtension('DublinCore')->getDescription();
+        }
+
+        if (empty($description)) {
+            $description = $this->getExtension('Atom')->getDescription();
+        }
+
+        if (!$description) {
+            $description = null;
+        }
+
+        $this->data['description'] = $description;
+
+        return $this->data['description'];
+    }
+
+    /**
+     * Get the feed ID
+     *
+     * @return string|null
+     */
+    public function getId()
+    {
+        if (array_key_exists('id', $this->data)) {
+            return $this->data['id'];
+        }
+
+        $id = null;
+
+        if ($this->getType() !== Reader\Reader::TYPE_RSS_10 &&
+            $this->getType() !== Reader\Reader::TYPE_RSS_090) {
+            $id = $this->xpath->evaluate('string(/rss/channel/guid)');
+        }
+
+        if (!$id && $this->getExtension('DublinCore') !== null) {
+            $id = $this->getExtension('DublinCore')->getId();
+        }
+
+        if (empty($id)) {
+            $id = $this->getExtension('Atom')->getId();
+        }
+
+        if (!$id) {
+            if ($this->getLink()) {
+                $id = $this->getLink();
+            } elseif ($this->getTitle()) {
+                $id = $this->getTitle();
+            } else {
+                $id = null;
+            }
+        }
+
+        $this->data['id'] = $id;
+
+        return $this->data['id'];
+    }
+
+    /**
+     * Get the feed image data
+     *
+     * @return array|null
+     */
+    public function getImage()
+    {
+        if (array_key_exists('image', $this->data)) {
+            return $this->data['image'];
+        }
+
+        if ($this->getType() !== Reader\Reader::TYPE_RSS_10 &&
+            $this->getType() !== Reader\Reader::TYPE_RSS_090) {
+            $list = $this->xpath->query('/rss/channel/image');
+            $prefix = '/rss/channel/image[1]';
+        } else {
+            $list = $this->xpath->query('/rdf:RDF/rss:channel/rss:image');
+            $prefix = '/rdf:RDF/rss:channel/rss:image[1]';
+        }
+        if ($list->length > 0) {
+            $image = array();
+            $value = $this->xpath->evaluate('string(' . $prefix . '/url)');
+            if ($value) {
+                $image['uri'] = $value;
+            }
+            $value = $this->xpath->evaluate('string(' . $prefix . '/link)');
+            if ($value) {
+                $image['link'] = $value;
+            }
+            $value = $this->xpath->evaluate('string(' . $prefix . '/title)');
+            if ($value) {
+                $image['title'] = $value;
+            }
+            $value = $this->xpath->evaluate('string(' . $prefix . '/height)');
+            if ($value) {
+                $image['height'] = $value;
+            }
+            $value = $this->xpath->evaluate('string(' . $prefix . '/width)');
+            if ($value) {
+                $image['width'] = $value;
+            }
+            $value = $this->xpath->evaluate('string(' . $prefix . '/description)');
+            if ($value) {
+                $image['description'] = $value;
+            }
+        } else {
+            $image = null;
+        }
+
+        $this->data['image'] = $image;
+
+        return $this->data['image'];
+    }
+
+    /**
+     * Get the feed language
+     *
+     * @return string|null
+     */
+    public function getLanguage()
+    {
+        if (array_key_exists('language', $this->data)) {
+            return $this->data['language'];
+        }
+
+        $language = null;
+
+        if ($this->getType() !== Reader\Reader::TYPE_RSS_10 &&
+            $this->getType() !== Reader\Reader::TYPE_RSS_090) {
+            $language = $this->xpath->evaluate('string(/rss/channel/language)');
+        }
+
+        if (!$language && $this->getExtension('DublinCore') !== null) {
+            $language = $this->getExtension('DublinCore')->getLanguage();
+        }
+
+        if (empty($language)) {
+            $language = $this->getExtension('Atom')->getLanguage();
+        }
+
+        if (!$language) {
+            $language = $this->xpath->evaluate('string(//@xml:lang[1])');
+        }
+
+        if (!$language) {
+            $language = null;
+        }
+
+        $this->data['language'] = $language;
+
+        return $this->data['language'];
+    }
+
+    /**
+     * Get a link to the feed
+     *
+     * @return string|null
+     */
+    public function getLink()
+    {
+        if (array_key_exists('link', $this->data)) {
+            return $this->data['link'];
+        }
+
+        $link = null;
+
+        if ($this->getType() !== Reader\Reader::TYPE_RSS_10 &&
+            $this->getType() !== Reader\Reader::TYPE_RSS_090) {
+            $link = $this->xpath->evaluate('string(/rss/channel/link)');
+        } else {
+            $link = $this->xpath->evaluate('string(/rdf:RDF/rss:channel/rss:link)');
+        }
+
+        if (empty($link)) {
+            $link = $this->getExtension('Atom')->getLink();
+        }
+
+        if (!$link) {
+            $link = null;
+        }
+
+        $this->data['link'] = $link;
+
+        return $this->data['link'];
+    }
+
+    /**
+     * Get a link to the feed XML
+     *
+     * @return string|null
+     */
+    public function getFeedLink()
+    {
+        if (array_key_exists('feedlink', $this->data)) {
+            return $this->data['feedlink'];
+        }
+
+        $link = null;
+
+        $link = $this->getExtension('Atom')->getFeedLink();
+
+        if ($link === null || empty($link)) {
+            $link = $this->getOriginalSourceUri();
+        }
+
+        $this->data['feedlink'] = $link;
+
+        return $this->data['feedlink'];
+    }
+
+    /**
+     * Get the feed generator entry
+     *
+     * @return string|null
+     */
+    public function getGenerator()
+    {
+        if (array_key_exists('generator', $this->data)) {
+            return $this->data['generator'];
+        }
+
+        $generator = null;
+
+        if ($this->getType() !== Reader\Reader::TYPE_RSS_10 &&
+            $this->getType() !== Reader\Reader::TYPE_RSS_090) {
+            $generator = $this->xpath->evaluate('string(/rss/channel/generator)');
+        }
+
+        if (!$generator) {
+            if ($this->getType() !== Reader\Reader::TYPE_RSS_10 &&
+            $this->getType() !== Reader\Reader::TYPE_RSS_090) {
+                $generator = $this->xpath->evaluate('string(/rss/channel/atom:generator)');
+            } else {
+                $generator = $this->xpath->evaluate('string(/rdf:RDF/rss:channel/atom:generator)');
+            }
+        }
+
+        if (empty($generator)) {
+            $generator = $this->getExtension('Atom')->getGenerator();
+        }
+
+        if (!$generator) {
+            $generator = null;
+        }
+
+        $this->data['generator'] = $generator;
+
+        return $this->data['generator'];
+    }
+
+    /**
+     * Get the feed title
+     *
+     * @return string|null
+     */
+    public function getTitle()
+    {
+        if (array_key_exists('title', $this->data)) {
+            return $this->data['title'];
+        }
+
+        $title = null;
+
+        if ($this->getType() !== Reader\Reader::TYPE_RSS_10 &&
+            $this->getType() !== Reader\Reader::TYPE_RSS_090) {
+            $title = $this->xpath->evaluate('string(/rss/channel/title)');
+        } else {
+            $title = $this->xpath->evaluate('string(/rdf:RDF/rss:channel/rss:title)');
+        }
+
+        if (!$title && $this->getExtension('DublinCore') !== null) {
+            $title = $this->getExtension('DublinCore')->getTitle();
+        }
+
+        if (!$title) {
+            $title = $this->getExtension('Atom')->getTitle();
+        }
+
+        if (!$title) {
+            $title = null;
+        }
+
+        $this->data['title'] = $title;
+
+        return $this->data['title'];
+    }
+
+    /**
+     * Get an array of any supported Pusubhubbub endpoints
+     *
+     * @return array|null
+     */
+    public function getHubs()
+    {
+        if (array_key_exists('hubs', $this->data)) {
+            return $this->data['hubs'];
+        }
+
+        $hubs = $this->getExtension('Atom')->getHubs();
+
+        if (empty($hubs)) {
+            $hubs = null;
+        } else {
+            $hubs = array_unique($hubs);
+        }
+
+        $this->data['hubs'] = $hubs;
+
+        return $this->data['hubs'];
+    }
+
+    /**
+     * Get all categories
+     *
+     * @return Reader\Collection\Category
+     */
+    public function getCategories()
+    {
+        if (array_key_exists('categories', $this->data)) {
+            return $this->data['categories'];
+        }
+
+        if ($this->getType() !== Reader\Reader::TYPE_RSS_10 &&
+            $this->getType() !== Reader\Reader::TYPE_RSS_090) {
+            $list = $this->xpath->query('/rss/channel//category');
+        } else {
+            $list = $this->xpath->query('/rdf:RDF/rss:channel//rss:category');
+        }
+
+        if ($list->length) {
+            $categoryCollection = new Collection\Category;
+            foreach ($list as $category) {
+                $categoryCollection[] = array(
+                    'term' => $category->nodeValue,
+                    'scheme' => $category->getAttribute('domain'),
+                    'label' => $category->nodeValue,
+                );
+            }
+        } else {
+            $categoryCollection = $this->getExtension('DublinCore')->getCategories();
+        }
+
+        if (count($categoryCollection) == 0) {
+            $categoryCollection = $this->getExtension('Atom')->getCategories();
+        }
+
+        $this->data['categories'] = $categoryCollection;
+
+        return $this->data['categories'];
+    }
+
+    /**
+     * Read all entries to the internal entries array
+     *
+     */
+    protected function indexEntries()
+    {
+        if ($this->getType() !== Reader\Reader::TYPE_RSS_10 && $this->getType() !== Reader\Reader::TYPE_RSS_090) {
+            $entries = $this->xpath->evaluate('//item');
+        } else {
+            $entries = $this->xpath->evaluate('//rss:item');
+        }
+
+        foreach ($entries as $index => $entry) {
+            $this->entries[$index] = $entry;
+        }
+    }
+
+    /**
+     * Register the default namespaces for the current feed format
+     *
+     */
+    protected function registerNamespaces()
+    {
+        switch ($this->data['type']) {
+            case Reader\Reader::TYPE_RSS_10:
+                $this->xpath->registerNamespace('rdf', Reader\Reader::NAMESPACE_RDF);
+                $this->xpath->registerNamespace('rss', Reader\Reader::NAMESPACE_RSS_10);
+                break;
+
+            case Reader\Reader::TYPE_RSS_090:
+                $this->xpath->registerNamespace('rdf', Reader\Reader::NAMESPACE_RDF);
+                $this->xpath->registerNamespace('rss', Reader\Reader::NAMESPACE_RSS_090);
+                break;
+        }
+    }
+}

3rdparty/ZendFeed/Reader/FeedSet.php

@@ -0,0 +1,127 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader;
+
+use ArrayObject;
+use DOMNodeList;
+use Zend\Feed\Uri;
+
+/**
+*/
+class FeedSet extends ArrayObject
+{
+
+    public $rss = null;
+
+    public $rdf = null;
+
+    public $atom = null;
+
+    /**
+     * Import a DOMNodeList from any document containing a set of links
+     * for alternate versions of a document, which will normally refer to
+     * RSS/RDF/Atom feeds for the current document.
+     *
+     * All such links are stored internally, however the first instance of
+     * each RSS, RDF or Atom type has its URI stored as a public property
+     * as a shortcut where the use case is simply to get a quick feed ref.
+     *
+     * Note that feeds are not loaded at this point, but will be lazy
+     * loaded automatically when each links 'feed' array key is accessed.
+     *
+     * @param DOMNodeList $links
+     * @param string $uri
+     * @return void
+     */
+    public function addLinks(DOMNodeList $links, $uri)
+    {
+        foreach ($links as $link) {
+            if (strtolower($link->getAttribute('rel')) !== 'alternate'
+                || !$link->getAttribute('type') || !$link->getAttribute('href')) {
+                continue;
+            }
+            if (!isset($this->rss) && $link->getAttribute('type') == 'application/rss+xml') {
+                $this->rss = $this->absolutiseUri(trim($link->getAttribute('href')), $uri);
+            } elseif (!isset($this->atom) && $link->getAttribute('type') == 'application/atom+xml') {
+                $this->atom = $this->absolutiseUri(trim($link->getAttribute('href')), $uri);
+            } elseif (!isset($this->rdf) && $link->getAttribute('type') == 'application/rdf+xml') {
+                $this->rdf = $this->absolutiseUri(trim($link->getAttribute('href')), $uri);
+            }
+            $this[] = new static(array(
+                'rel' => 'alternate',
+                'type' => $link->getAttribute('type'),
+                'href' => $this->absolutiseUri(trim($link->getAttribute('href')), $uri),
+            ));
+        }
+    }
+
+    /**
+     *  Attempt to turn a relative URI into an absolute URI
+     */
+    protected function absolutiseUri($link, $uri = null)
+    {
+        $linkUri = Uri::factory($link);
+        if (!$linkUri->isAbsolute() or !$linkUri->isValid()) {
+            if ($uri !== null) {
+                $uri = Uri::factory($uri);
+
+                if ($link[0] !== '/') {
+                    $link = $uri->getPath() . '/' . $link;
+                }
+
+                $link = $uri->getScheme() . '://' . $uri->getHost() . '/' . $this->canonicalizePath($link);
+                if (!Uri::factory($link)->isValid()) {
+                    $link = null;
+                }
+            }
+        }
+        return $link;
+    }
+
+    /**
+     *  Canonicalize relative path
+     */
+    protected function canonicalizePath($path)
+    {
+        $parts = array_filter(explode('/', $path));
+        $absolutes = array();
+        foreach ($parts as $part) {
+            if ('.' == $part) {
+                continue;
+            }
+            if ('..' == $part) {
+                array_pop($absolutes);
+            } else {
+                $absolutes[] = $part;
+            }
+        }
+        return implode('/', $absolutes);
+    }
+
+    /**
+     * Supports lazy loading of feeds using Reader::import() but
+     * delegates any other operations to the parent class.
+     *
+     * @param string $offset
+     * @return mixed
+     */
+    public function offsetGet($offset)
+    {
+        if ($offset == 'feed' && !$this->offsetExists('feed')) {
+            if (!$this->offsetExists('href')) {
+                return null;
+            }
+            $feed = Reader::import($this->offsetGet('href'));
+            $this->offsetSet('feed', $feed);
+            return $feed;
+        }
+        return parent::offsetGet($offset);
+    }
+}

3rdparty/ZendFeed/Reader/Http/ClientInterface.php

@@ -0,0 +1,21 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Http;
+
+interface ClientInterface
+{
+    /**
+     * Make a GET request to a given URI
+     *
+     * @param  string $uri
+     * @return ResponseInterface
+     */
+    public function get($uri);
+}

3rdparty/ZendFeed/Reader/Http/ResponseInterface.php

@@ -0,0 +1,27 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Http;
+
+interface ResponseInterface
+{
+    /**
+     * Retrieve the response body
+     *
+     * @return string
+     */
+    public function getBody();
+
+    /**
+     * Retrieve the HTTP response status code
+     *
+     * @return int
+     */
+    public function getStatusCode();
+}

3rdparty/ZendFeed/Reader/Reader.php

@@ -0,0 +1,678 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader;
+
+use DOMDocument;
+use DOMXPath;
+use Zend\Cache\Storage\StorageInterface as CacheStorage;
+use Zend\Http as ZendHttp;
+use Zend\Stdlib\ErrorHandler;
+
+/**
+*/
+class Reader
+{
+    /**
+     * Namespace constants
+     */
+    const NAMESPACE_ATOM_03  = 'http://purl.org/atom/ns#';
+    const NAMESPACE_ATOM_10  = 'http://www.w3.org/2005/Atom';
+    const NAMESPACE_RDF      = 'http://www.w3.org/1999/02/22-rdf-syntax-ns#';
+    const NAMESPACE_RSS_090  = 'http://my.netscape.com/rdf/simple/0.9/';
+    const NAMESPACE_RSS_10   = 'http://purl.org/rss/1.0/';
+
+    /**
+     * Feed type constants
+     */
+    const TYPE_ANY              = 'any';
+    const TYPE_ATOM_03          = 'atom-03';
+    const TYPE_ATOM_10          = 'atom-10';
+    const TYPE_ATOM_10_ENTRY    = 'atom-10-entry';
+    const TYPE_ATOM_ANY         = 'atom';
+    const TYPE_RSS_090          = 'rss-090';
+    const TYPE_RSS_091          = 'rss-091';
+    const TYPE_RSS_091_NETSCAPE = 'rss-091n';
+    const TYPE_RSS_091_USERLAND = 'rss-091u';
+    const TYPE_RSS_092          = 'rss-092';
+    const TYPE_RSS_093          = 'rss-093';
+    const TYPE_RSS_094          = 'rss-094';
+    const TYPE_RSS_10           = 'rss-10';
+    const TYPE_RSS_20           = 'rss-20';
+    const TYPE_RSS_ANY          = 'rss';
+
+    /**
+     * Cache instance
+     *
+     * @var CacheStorage
+     */
+    protected static $cache = null;
+
+    /**
+     * HTTP client object to use for retrieving feeds
+     *
+     * @var ZendHttp\Client
+     */
+    protected static $httpClient = null;
+
+    /**
+     * Override HTTP PUT and DELETE request methods?
+     *
+     * @var bool
+     */
+    protected static $httpMethodOverride = false;
+
+    protected static $httpConditionalGet = false;
+
+    protected static $extensionManager = null;
+
+    protected static $extensions = array(
+        'feed' => array(
+            'DublinCore\Feed',
+            'Atom\Feed'
+        ),
+        'entry' => array(
+            'Content\Entry',
+            'DublinCore\Entry',
+            'Atom\Entry'
+        ),
+        'core' => array(
+            'DublinCore\Feed',
+            'Atom\Feed',
+            'Content\Entry',
+            'DublinCore\Entry',
+            'Atom\Entry'
+        )
+    );
+
+    /**
+     * Get the Feed cache
+     *
+     * @return CacheStorage
+     */
+    public static function getCache()
+    {
+        return static::$cache;
+    }
+
+    /**
+     * Set the feed cache
+     *
+     * @param  CacheStorage $cache
+     * @return void
+     */
+    public static function setCache(CacheStorage $cache)
+    {
+        static::$cache = $cache;
+    }
+
+    /**
+     * Set the HTTP client instance
+     *
+     * Sets the HTTP client object to use for retrieving the feeds.
+     *
+     * @param  ZendHttp\Client $httpClient
+     * @return void
+     */
+    public static function setHttpClient(ZendHttp\Client $httpClient)
+    {
+        static::$httpClient = $httpClient;
+    }
+
+
+    /**
+     * Gets the HTTP client object. If none is set, a new ZendHttp\Client will be used.
+     *
+     * @return ZendHttp\Client
+     */
+    public static function getHttpClient()
+    {
+        if (!static::$httpClient instanceof ZendHttp\Client) {
+            static::$httpClient = new ZendHttp\Client();
+        }
+
+        return static::$httpClient;
+    }
+
+    /**
+     * Toggle using POST instead of PUT and DELETE HTTP methods
+     *
+     * Some feed implementations do not accept PUT and DELETE HTTP
+     * methods, or they can't be used because of proxies or other
+     * measures. This allows turning on using POST where PUT and
+     * DELETE would normally be used; in addition, an
+     * X-Method-Override header will be sent with a value of PUT or
+     * DELETE as appropriate.
+     *
+     * @param  bool $override Whether to override PUT and DELETE.
+     * @return void
+     */
+    public static function setHttpMethodOverride($override = true)
+    {
+        static::$httpMethodOverride = $override;
+    }
+
+    /**
+     * Get the HTTP override state
+     *
+     * @return bool
+     */
+    public static function getHttpMethodOverride()
+    {
+        return static::$httpMethodOverride;
+    }
+
+    /**
+     * Set the flag indicating whether or not to use HTTP conditional GET
+     *
+     * @param  bool $bool
+     * @return void
+     */
+    public static function useHttpConditionalGet($bool = true)
+    {
+        static::$httpConditionalGet = $bool;
+    }
+
+    /**
+     * Import a feed by providing a URI
+     *
+     * @param  string $uri The URI to the feed
+     * @param  string $etag OPTIONAL Last received ETag for this resource
+     * @param  string $lastModified OPTIONAL Last-Modified value for this resource
+     * @return Feed\FeedInterface
+     * @throws Exception\RuntimeException
+     */
+    public static function import($uri, $etag = null, $lastModified = null)
+    {
+        $cache       = self::getCache();
+        $feed        = null;
+        $client      = self::getHttpClient();
+        $client->resetParameters();
+        $headers = new ZendHttp\Headers();
+        $client->setHeaders($headers);
+        $client->setUri($uri);
+        $cacheId = 'Zend_Feed_Reader_' . md5($uri);
+
+        if (static::$httpConditionalGet && $cache) {
+            $data = $cache->getItem($cacheId);
+            if ($data) {
+                if ($etag === null) {
+                    $etag = $cache->getItem($cacheId . '_etag');
+                }
+                if ($lastModified === null) {
+                    $lastModified = $cache->getItem($cacheId . '_lastmodified');
+                }
+                if ($etag) {
+                    $headers->addHeaderLine('If-None-Match', $etag);
+                }
+                if ($lastModified) {
+                    $headers->addHeaderLine('If-Modified-Since', $lastModified);
+                }
+            }
+            $response = $client->send();
+            if ($response->getStatusCode() !== 200 && $response->getStatusCode() !== 304) {
+                throw new Exception\RuntimeException('Feed failed to load, got response code ' . $response->getStatusCode());
+            }
+            if ($response->getStatusCode() == 304) {
+                $responseXml = $data;
+            } else {
+                $responseXml = $response->getBody();
+                $cache->setItem($cacheId, $responseXml);
+                if ($response->getHeaders()->get('ETag')) {
+                    $cache->setItem($cacheId . '_etag', $response->getHeaders()->get('ETag')->getFieldValue());
+                }
+                if ($response->getHeaders()->get('Last-Modified')) {
+                    $cache->setItem($cacheId . '_lastmodified', $response->getHeaders()->get('Last-Modified')->getFieldValue());
+                }
+            }
+            return static::importString($responseXml);
+        } elseif ($cache) {
+            $data = $cache->getItem($cacheId);
+            if ($data) {
+                return static::importString($data);
+            }
+            $response = $client->send();
+            if ((int) $response->getStatusCode() !== 200) {
+                throw new Exception\RuntimeException('Feed failed to load, got response code ' . $response->getStatusCode());
+            }
+            $responseXml = $response->getBody();
+            $cache->setItem($cacheId, $responseXml);
+            return static::importString($responseXml);
+        } else {
+            $response = $client->send();
+            if ((int) $response->getStatusCode() !== 200) {
+                throw new Exception\RuntimeException('Feed failed to load, got response code ' . $response->getStatusCode());
+            }
+            $reader = static::importString($response->getBody());
+            $reader->setOriginalSourceUri($uri);
+            return $reader;
+        }
+    }
+
+    /**
+     * Import a feed from a remote URI
+     *
+     * Performs similarly to import(), except it uses the HTTP client passed to
+     * the method, and does not take into account cached data.
+     *
+     * Primary purpose is to make it possible to use the Reader with alternate
+     * HTTP client implementations.
+     *
+     * @param  string $uri
+     * @param  Http\ClientInterface $client
+     * @return self
+     * @throws Exception\RuntimeException if response is not an Http\ResponseInterface
+     */
+    public static function importRemoteFeed($uri, Http\ClientInterface $client)
+    {
+        $response = $client->get($uri);
+        if (!$response instanceof Http\ResponseInterface) {
+            throw new Exception\RuntimeException(sprintf(
+                'Did not receive a %s\Http\ResponseInterface from the provided HTTP client; received "%s"',
+                __NAMESPACE__,
+                (is_object($response) ? get_class($response) : gettype($response))
+            ));
+        }
+
+        if ((int) $response->getStatusCode() !== 200) {
+            throw new Exception\RuntimeException('Feed failed to load, got response code ' . $response->getStatusCode());
+        }
+        $reader = static::importString($response->getBody());
+        $reader->setOriginalSourceUri($uri);
+        return $reader;
+    }
+
+    /**
+     * Import a feed from a string
+     *
+     * @param  string $string
+     * @return Feed\FeedInterface
+     * @throws Exception\InvalidArgumentException
+     * @throws Exception\RuntimeException
+     */
+    public static function importString($string)
+    {
+        $trimmed = trim($string);
+        if (!is_string($string) || empty($trimmed)) {
+            throw new Exception\InvalidArgumentException('Only non empty strings are allowed as input');
+        }
+
+        $libxmlErrflag = libxml_use_internal_errors(true);
+        $oldValue = libxml_disable_entity_loader(true);
+        $dom = new DOMDocument;
+        $status = $dom->loadXML(trim($string));
+        foreach ($dom->childNodes as $child) {
+            if ($child->nodeType === XML_DOCUMENT_TYPE_NODE) {
+                throw new Exception\InvalidArgumentException(
+                    'Invalid XML: Detected use of illegal DOCTYPE'
+                );
+            }
+        }
+        libxml_disable_entity_loader($oldValue);
+        libxml_use_internal_errors($libxmlErrflag);
+
+        if (!$status) {
+            // Build error message
+            $error = libxml_get_last_error();
+            if ($error && $error->message) {
+                $error->message = trim($error->message);
+                $errormsg = "DOMDocument cannot parse XML: {$error->message}";
+            } else {
+                $errormsg = "DOMDocument cannot parse XML: Please check the XML document's validity";
+            }
+            throw new Exception\RuntimeException($errormsg);
+        }
+
+        $type = static::detectType($dom);
+
+        static::registerCoreExtensions();
+
+        if (substr($type, 0, 3) == 'rss') {
+            $reader = new Feed\Rss($dom, $type);
+        } elseif (substr($type, 8, 5) == 'entry') {
+            $reader = new Entry\Atom($dom->documentElement, 0, self::TYPE_ATOM_10);
+        } elseif (substr($type, 0, 4) == 'atom') {
+            $reader = new Feed\Atom($dom, $type);
+        } else {
+            throw new Exception\RuntimeException('The URI used does not point to a '
+            . 'valid Atom, RSS or RDF feed that Zend\Feed\Reader can parse.');
+        }
+        return $reader;
+    }
+
+    /**
+     * Imports a feed from a file located at $filename.
+     *
+     * @param  string $filename
+     * @throws Exception\RuntimeException
+     * @return Feed\FeedInterface
+     */
+    public static function importFile($filename)
+    {
+        ErrorHandler::start();
+        $feed = file_get_contents($filename);
+        $err  = ErrorHandler::stop();
+        if ($feed === false) {
+            throw new Exception\RuntimeException("File '{$filename}' could not be loaded", 0, $err);
+        }
+        return static::importString($feed);
+    }
+
+    /**
+     * Find feed links
+     *
+     * @param $uri
+     * @return FeedSet
+     * @throws Exception\RuntimeException
+     */
+    public static function findFeedLinks($uri)
+    {
+        $client = static::getHttpClient();
+        $client->setUri($uri);
+        $response = $client->send();
+        if ($response->getStatusCode() !== 200) {
+            throw new Exception\RuntimeException("Failed to access $uri, got response code " . $response->getStatusCode());
+        }
+        $responseHtml = $response->getBody();
+        $libxmlErrflag = libxml_use_internal_errors(true);
+        $oldValue = libxml_disable_entity_loader(true);
+        $dom = new DOMDocument;
+        $status = $dom->loadHTML(trim($responseHtml));
+        libxml_disable_entity_loader($oldValue);
+        libxml_use_internal_errors($libxmlErrflag);
+        if (!$status) {
+            // Build error message
+            $error = libxml_get_last_error();
+            if ($error && $error->message) {
+                $error->message = trim($error->message);
+                $errormsg = "DOMDocument cannot parse HTML: {$error->message}";
+            } else {
+                $errormsg = "DOMDocument cannot parse HTML: Please check the XML document's validity";
+            }
+            throw new Exception\RuntimeException($errormsg);
+        }
+        $feedSet = new FeedSet;
+        $links = $dom->getElementsByTagName('link');
+        $feedSet->addLinks($links, $uri);
+        return $feedSet;
+    }
+
+    /**
+     * Detect the feed type of the provided feed
+     *
+     * @param  Feed\AbstractFeed|DOMDocument|string $feed
+     * @param  bool $specOnly
+     * @return string
+     * @throws Exception\InvalidArgumentException
+     * @throws Exception\RuntimeException
+     */
+    public static function detectType($feed, $specOnly = false)
+    {
+        if ($feed instanceof Feed\AbstractFeed) {
+            $dom = $feed->getDomDocument();
+        } elseif ($feed instanceof DOMDocument) {
+            $dom = $feed;
+        } elseif (is_string($feed) && !empty($feed)) {
+            ErrorHandler::start(E_NOTICE|E_WARNING);
+            ini_set('track_errors', 1);
+            $oldValue = libxml_disable_entity_loader(true);
+            $dom = new DOMDocument;
+            $status = $dom->loadXML($feed);
+            foreach ($dom->childNodes as $child) {
+                if ($child->nodeType === XML_DOCUMENT_TYPE_NODE) {
+                    throw new Exception\InvalidArgumentException(
+                        'Invalid XML: Detected use of illegal DOCTYPE'
+                    );
+                }
+            }
+            libxml_disable_entity_loader($oldValue);
+            ini_restore('track_errors');
+            ErrorHandler::stop();
+            if (!$status) {
+                if (!isset($phpErrormsg)) {
+                    if (function_exists('xdebug_is_enabled')) {
+                        $phpErrormsg = '(error message not available, when XDebug is running)';
+                    } else {
+                        $phpErrormsg = '(error message not available)';
+                    }
+                }
+                throw new Exception\RuntimeException("DOMDocument cannot parse XML: $phpErrormsg");
+            }
+        } else {
+            throw new Exception\InvalidArgumentException('Invalid object/scalar provided: must'
+            . ' be of type Zend\Feed\Reader\Feed, DomDocument or string');
+        }
+        $xpath = new DOMXPath($dom);
+
+        if ($xpath->query('/rss')->length) {
+            $type = self::TYPE_RSS_ANY;
+            $version = $xpath->evaluate('string(/rss/@version)');
+
+            if (strlen($version) > 0) {
+                switch ($version) {
+                    case '2.0':
+                        $type = self::TYPE_RSS_20;
+                        break;
+
+                    case '0.94':
+                        $type = self::TYPE_RSS_094;
+                        break;
+
+                    case '0.93':
+                        $type = self::TYPE_RSS_093;
+                        break;
+
+                    case '0.92':
+                        $type = self::TYPE_RSS_092;
+                        break;
+
+                    case '0.91':
+                        $type = self::TYPE_RSS_091;
+                        break;
+                }
+            }
+
+            return $type;
+        }
+
+        $xpath->registerNamespace('rdf', self::NAMESPACE_RDF);
+
+        if ($xpath->query('/rdf:RDF')->length) {
+            $xpath->registerNamespace('rss', self::NAMESPACE_RSS_10);
+
+            if ($xpath->query('/rdf:RDF/rss:channel')->length
+                || $xpath->query('/rdf:RDF/rss:image')->length
+                || $xpath->query('/rdf:RDF/rss:item')->length
+                || $xpath->query('/rdf:RDF/rss:textinput')->length
+            ) {
+                return self::TYPE_RSS_10;
+            }
+
+            $xpath->registerNamespace('rss', self::NAMESPACE_RSS_090);
+
+            if ($xpath->query('/rdf:RDF/rss:channel')->length
+                || $xpath->query('/rdf:RDF/rss:image')->length
+                || $xpath->query('/rdf:RDF/rss:item')->length
+                || $xpath->query('/rdf:RDF/rss:textinput')->length
+            ) {
+                return self::TYPE_RSS_090;
+            }
+        }
+
+        $xpath->registerNamespace('atom', self::NAMESPACE_ATOM_10);
+
+        if ($xpath->query('//atom:feed')->length) {
+            return self::TYPE_ATOM_10;
+        }
+
+        if ($xpath->query('//atom:entry')->length) {
+            if ($specOnly == true) {
+                return self::TYPE_ATOM_10;
+            } else {
+                return self::TYPE_ATOM_10_ENTRY;
+            }
+        }
+
+        $xpath->registerNamespace('atom', self::NAMESPACE_ATOM_03);
+
+        if ($xpath->query('//atom:feed')->length) {
+            return self::TYPE_ATOM_03;
+        }
+
+        return self::TYPE_ANY;
+    }
+
+    /**
+     * Set plugin manager for use with Extensions
+     *
+     * @param ExtensionManagerInterface $extensionManager
+     */
+    public static function setExtensionManager(ExtensionManagerInterface $extensionManager)
+    {
+        static::$extensionManager = $extensionManager;
+    }
+
+    /**
+     * Get plugin manager for use with Extensions
+     *
+     * @return ExtensionManagerInterface
+     */
+    public static function getExtensionManager()
+    {
+        if (!isset(static::$extensionManager)) {
+            static::setExtensionManager(new ExtensionManager());
+        }
+        return static::$extensionManager;
+    }
+
+    /**
+     * Register an Extension by name
+     *
+     * @param  string $name
+     * @return void
+     * @throws Exception\RuntimeException if unable to resolve Extension class
+     */
+    public static function registerExtension($name)
+    {
+        $feedName  = $name . '\Feed';
+        $entryName = $name . '\Entry';
+        $manager   = static::getExtensionManager();
+        if (static::isRegistered($name)) {
+            if ($manager->has($feedName) || $manager->has($entryName)) {
+                return;
+            }
+        }
+
+        if (!$manager->has($feedName) && !$manager->has($entryName)) {
+            throw new Exception\RuntimeException('Could not load extension: ' . $name
+                . ' using Plugin Loader. Check prefix paths are configured and extension exists.');
+        }
+        if ($manager->has($feedName)) {
+            static::$extensions['feed'][] = $feedName;
+        }
+        if ($manager->has($entryName)) {
+            static::$extensions['entry'][] = $entryName;
+        }
+    }
+
+    /**
+     * Is a given named Extension registered?
+     *
+     * @param  string $extensionName
+     * @return bool
+     */
+    public static function isRegistered($extensionName)
+    {
+        $feedName  = $extensionName . '\Feed';
+        $entryName = $extensionName . '\Entry';
+        if (in_array($feedName, static::$extensions['feed'])
+            || in_array($entryName, static::$extensions['entry'])
+        ) {
+            return true;
+        }
+        return false;
+    }
+
+    /**
+     * Get a list of extensions
+     *
+     * @return array
+     */
+    public static function getExtensions()
+    {
+        return static::$extensions;
+    }
+
+    /**
+     * Reset class state to defaults
+     *
+     * @return void
+     */
+    public static function reset()
+    {
+        static::$cache              = null;
+        static::$httpClient         = null;
+        static::$httpMethodOverride = false;
+        static::$httpConditionalGet = false;
+        static::$extensionManager   = null;
+        static::$extensions         = array(
+            'feed' => array(
+                'DublinCore\Feed',
+                'Atom\Feed'
+            ),
+            'entry' => array(
+                'Content\Entry',
+                'DublinCore\Entry',
+                'Atom\Entry'
+            ),
+            'core' => array(
+                'DublinCore\Feed',
+                'Atom\Feed',
+                'Content\Entry',
+                'DublinCore\Entry',
+                'Atom\Entry'
+            )
+        );
+    }
+
+    /**
+     * Register core (default) extensions
+     *
+     * @return void
+     */
+    protected static function registerCoreExtensions()
+    {
+        static::registerExtension('DublinCore');
+        static::registerExtension('Content');
+        static::registerExtension('Atom');
+        static::registerExtension('Slash');
+        static::registerExtension('WellFormedWeb');
+        static::registerExtension('Thread');
+        static::registerExtension('Podcast');
+    }
+
+    /**
+     * Utility method to apply array_unique operation to a multidimensional
+     * array.
+     *
+     * @param array
+     * @return array
+     */
+    public static function arrayUnique(array $array)
+    {
+        foreach ($array as &$value) {
+            $value = serialize($value);
+        }
+        $array = array_unique($array);
+        foreach ($array as &$value) {
+            $value = unserialize($value);
+        }
+        return $array;
+    }
+}

3rdparty/ZendFeed/Uri.php

@@ -0,0 +1,184 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed;
+
+class Uri
+{
+    /**
+     * @var string
+     */
+    protected $fragment;
+
+    /**
+     * @var string
+     */
+    protected $host;
+
+    /**
+     * @var string
+     */
+    protected $pass;
+
+    /**
+     * @var string
+     */
+    protected $path;
+
+    /**
+     * @var int
+     */
+    protected $port;
+
+    /**
+     * @var string
+     */
+    protected $query;
+
+    /**
+     * @var string
+     */
+    protected $scheme;
+
+    /**
+     * @var string
+     */
+    protected $user;
+
+    /**
+     * @var bool
+     */
+    protected $valid;
+
+    /**
+     * Valid schemes
+     */
+    protected $validSchemes = array(
+        'http',
+        'https',
+        'file',
+    );
+
+    /**
+     * @param  string $uri
+     */
+    public function __construct($uri)
+    {
+        $parsed = parse_url($uri);
+        if (false === $parsed) {
+            $this->valid = false;
+            return;
+        }
+
+        $this->scheme   = isset($parsed['scheme'])   ? $parsed['scheme']   : null;
+        $this->host     = isset($parsed['host'])     ? $parsed['host']     : null;
+        $this->port     = isset($parsed['port'])     ? $parsed['port']     : null;
+        $this->user     = isset($parsed['user'])     ? $parsed['user']     : null;
+        $this->pass     = isset($parsed['pass'])     ? $parsed['pass']     : null;
+        $this->path     = isset($parsed['path'])     ? $parsed['path']     : null;
+        $this->query    = isset($parsed['query'])    ? $parsed['query']    : null;
+        $this->fragment = isset($parsed['fragment']) ? $parsed['fragment'] : null;
+    }
+
+    /**
+     * Create an instance
+     *
+     * Useful for chained validations
+     *
+     * @param  string $uri
+     * @return self
+     */
+    public static function factory($uri)
+    {
+        return new static($uri);
+    }
+
+    /**
+     * Retrieve the host
+     *
+     * @return string
+     */
+    public function getHost()
+    {
+        return $this->host;
+    }
+
+    /**
+     * Retrieve the URI path
+     *
+     * @return string
+     */
+    public function getPath()
+    {
+        return $this->path;
+    }
+
+    /**
+     * Retrieve the scheme
+     *
+     * @return string
+     */
+    public function getScheme()
+    {
+        return $this->scheme;
+    }
+
+    /**
+     * Is the URI valid?
+     *
+     * @return bool
+     */
+    public function isValid()
+    {
+        if (false === $this->valid) {
+            return false;
+        }
+
+        if ($this->scheme && !in_array($this->scheme, $this->validSchemes)) {
+            return false;
+        }
+
+        if ($this->host) {
+            if ($this->path && substr($this->path, 0, 1) != '/') {
+                return false;
+            }
+            return true;
+        }
+
+        // no host, but user and/or port... what?
+        if ($this->user || $this->port) {
+            return false;
+        }
+
+        if ($this->path) {
+            // Check path-only (no host) URI
+            if (substr($this->path, 0, 2) == '//') {
+                return false;
+            }
+            return true;
+        }
+
+        if (! ($this->query || $this->fragment)) {
+            // No host, path, query or fragment - this is not a valid URI
+            return false;
+        }
+
+        return true;
+    }
+
+    /**
+     * Is the URI absolute?
+     *
+     * @return bool
+     */
+    public function isAbsolute()
+    {
+        return ($this->scheme !== null);
+    }
+}

3rdparty/ZendFeed/Writer/AbstractFeed.php

@@ -0,0 +1,847 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer;
+
+use DateTime;
+use Zend\Feed\Uri;
+use Zend\Validator;
+
+class AbstractFeed
+{
+    /**
+     * Contains all Feed level date to append in feed output
+     *
+     * @var array
+     */
+    protected $data = array();
+
+    /**
+     * Holds the value "atom" or "rss" depending on the feed type set when
+     * when last exported.
+     *
+     * @var string
+     */
+    protected $type = null;
+
+    /**
+     * @var $extensions
+     */
+    protected $extensions;
+
+    /**
+     * Constructor: Primarily triggers the registration of core extensions and
+     * loads those appropriate to this data container.
+     *
+     */
+    public function __construct()
+    {
+        Writer::registerCoreExtensions();
+        $this->_loadExtensions();
+    }
+
+    /**
+     * Set a single author
+     *
+     * The following option keys are supported:
+     * 'name'  => (string) The name
+     * 'email' => (string) An optional email
+     * 'uri'   => (string) An optional and valid URI
+     *
+     * @param array $author
+     * @throws Exception\InvalidArgumentException If any value of $author not follow the format.
+     * @return AbstractFeed
+     */
+    public function addAuthor(array $author)
+    {
+        // Check array values
+        if (!array_key_exists('name', $author)
+            || empty($author['name'])
+            || !is_string($author['name'])
+        ) {
+            throw new Exception\InvalidArgumentException(
+                'Invalid parameter: author array must include a "name" key with a non-empty string value');
+        }
+
+        if (isset($author['email'])) {
+            if (empty($author['email']) || !is_string($author['email'])) {
+                throw new Exception\InvalidArgumentException(
+                    'Invalid parameter: "email" array value must be a non-empty string');
+            }
+        }
+        if (isset($author['uri'])) {
+            if (empty($author['uri']) || !is_string($author['uri']) ||
+                !Uri::factory($author['uri'])->isValid()
+            ) {
+                throw new Exception\InvalidArgumentException(
+                    'Invalid parameter: "uri" array value must be a non-empty string and valid URI/IRI');
+            }
+        }
+
+        $this->data['authors'][] = $author;
+
+        return $this;
+    }
+
+    /**
+     * Set an array with feed authors
+     *
+     * @see addAuthor
+     * @param array $authors
+     * @return AbstractFeed
+     */
+    public function addAuthors(array $authors)
+    {
+        foreach ($authors as $author) {
+            $this->addAuthor($author);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Set the copyright entry
+     *
+     * @param  string      $copyright
+     * @throws Exception\InvalidArgumentException
+     * @return AbstractFeed
+     */
+    public function setCopyright($copyright)
+    {
+        if (empty($copyright) || !is_string($copyright)) {
+            throw new Exception\InvalidArgumentException('Invalid parameter: parameter must be a non-empty string');
+        }
+        $this->data['copyright'] = $copyright;
+
+        return $this;
+    }
+
+    /**
+     * Set the feed creation date
+     *
+     * @param null|int|DateTime
+     * @throws Exception\InvalidArgumentException
+     * @return AbstractFeed
+     */
+    public function setDateCreated($date = null)
+    {
+        if ($date === null) {
+            $date = new DateTime();
+        } elseif (is_int($date)) {
+            $date = new DateTime('@' . $date);
+        } elseif (!$date instanceof DateTime) {
+            throw new Exception\InvalidArgumentException('Invalid DateTime object or UNIX Timestamp'
+                                                         . ' passed as parameter');
+        }
+        $this->data['dateCreated'] = $date;
+
+        return $this;
+    }
+
+    /**
+     * Set the feed modification date
+     *
+     * @param null|int|DateTime
+     * @throws Exception\InvalidArgumentException
+     * @return AbstractFeed
+     */
+    public function setDateModified($date = null)
+    {
+        if ($date === null) {
+            $date = new DateTime();
+        } elseif (is_int($date)) {
+            $date = new DateTime('@' . $date);
+        } elseif (!$date instanceof DateTime) {
+            throw new Exception\InvalidArgumentException('Invalid DateTime object or UNIX Timestamp'
+                                                         . ' passed as parameter');
+        }
+        $this->data['dateModified'] = $date;
+
+        return $this;
+    }
+
+    /**
+     * Set the feed last-build date. Ignored for Atom 1.0.
+     *
+     * @param null|int|DateTime
+     * @throws Exception\InvalidArgumentException
+     * @return AbstractFeed
+     */
+    public function setLastBuildDate($date = null)
+    {
+        if ($date === null) {
+            $date = new DateTime();
+        } elseif (is_int($date)) {
+            $date = new DateTime('@' . $date);
+        } elseif (!$date instanceof DateTime) {
+            throw new Exception\InvalidArgumentException('Invalid DateTime object or UNIX Timestamp'
+                                                         . ' passed as parameter');
+        }
+        $this->data['lastBuildDate'] = $date;
+
+        return $this;
+    }
+
+    /**
+     * Set the feed description
+     *
+     * @param string $description
+     * @throws Exception\InvalidArgumentException
+     * @return AbstractFeed
+     */
+    public function setDescription($description)
+    {
+        if (empty($description) || !is_string($description)) {
+            throw new Exception\InvalidArgumentException('Invalid parameter: parameter must be a non-empty string');
+        }
+        $this->data['description'] = $description;
+
+        return $this;
+    }
+
+    /**
+     * Set the feed generator entry
+     *
+     * @param array|string $name
+     * @param null|string $version
+     * @param null|string $uri
+     * @throws Exception\InvalidArgumentException
+     * @return AbstractFeed
+     */
+    public function setGenerator($name, $version = null, $uri = null)
+    {
+        if (is_array($name)) {
+            $data = $name;
+            if (empty($data['name']) || !is_string($data['name'])) {
+                throw new Exception\InvalidArgumentException('Invalid parameter: "name" must be a non-empty string');
+            }
+            $generator = array('name' => $data['name']);
+            if (isset($data['version'])) {
+                if (empty($data['version']) || !is_string($data['version'])) {
+                    throw new Exception\InvalidArgumentException('Invalid parameter: "version" must be a non-empty string');
+                }
+                $generator['version'] = $data['version'];
+            }
+            if (isset($data['uri'])) {
+                if (empty($data['uri']) || !is_string($data['uri']) || !Uri::factory($data['uri'])->isValid()) {
+                    throw new Exception\InvalidArgumentException('Invalid parameter: "uri" must be a non-empty string and a valid URI/IRI');
+                }
+                $generator['uri'] = $data['uri'];
+            }
+        } else {
+            if (empty($name) || !is_string($name)) {
+                throw new Exception\InvalidArgumentException('Invalid parameter: "name" must be a non-empty string');
+            }
+            $generator = array('name' => $name);
+            if (isset($version)) {
+                if (empty($version) || !is_string($version)) {
+                    throw new Exception\InvalidArgumentException('Invalid parameter: "version" must be a non-empty string');
+                }
+                $generator['version'] = $version;
+            }
+            if (isset($uri)) {
+                if (empty($uri) || !is_string($uri) || !Uri::factory($uri)->isValid()) {
+                    throw new Exception\InvalidArgumentException('Invalid parameter: "uri" must be a non-empty string and a valid URI/IRI');
+                }
+                $generator['uri'] = $uri;
+            }
+        }
+        $this->data['generator'] = $generator;
+
+        return $this;
+    }
+
+    /**
+     * Set the feed ID - URI or URN (via PCRE pattern) supported
+     *
+     * @param string $id
+     * @throws Exception\InvalidArgumentException
+     * @return AbstractFeed
+     */
+    public function setId($id)
+    {
+        if ((empty($id) || !is_string($id) || !Uri::factory($id)->isValid())
+            && !preg_match("#^urn:[a-zA-Z0-9][a-zA-Z0-9\-]{1,31}:([a-zA-Z0-9\(\)\+\,\.\:\=\@\;\$\_\!\*\-]|%[0-9a-fA-F]{2})*#", $id)
+            && !$this->_validateTagUri($id)
+        ) {
+            throw new Exception\InvalidArgumentException('Invalid parameter: parameter must be a non-empty string and valid URI/IRI');
+        }
+        $this->data['id'] = $id;
+
+        return $this;
+    }
+
+    /**
+     * Validate a URI using the tag scheme (RFC 4151)
+     *
+     * @param string $id
+     * @return bool
+     */
+    protected function _validateTagUri($id)
+    {
+        if (preg_match('/^tag:(?P<name>.*),(?P<date>\d{4}-?\d{0,2}-?\d{0,2}):(?P<specific>.*)(.*:)*$/', $id, $matches)) {
+            $dvalid = false;
+            $date = $matches['date'];
+            $d6 = strtotime($date);
+            if ((strlen($date) == 4) && $date <= date('Y')) {
+                $dvalid = true;
+            } elseif ((strlen($date) == 7) && ($d6 < strtotime("now"))) {
+                $dvalid = true;
+            } elseif ((strlen($date) == 10) && ($d6 < strtotime("now"))) {
+                $dvalid = true;
+            }
+            $validator = new Validator\EmailAddress;
+            if ($validator->isValid($matches['name'])) {
+                $nvalid = true;
+            } else {
+                $nvalid = $validator->isValid('info@' . $matches['name']);
+            }
+            return $dvalid && $nvalid;
+
+        }
+        return false;
+    }
+
+    /**
+     * Set a feed image (URI at minimum). Parameter is a single array with the
+     * required key 'uri'. When rendering as RSS, the required keys are 'uri',
+     * 'title' and 'link'. RSS also specifies three optional parameters 'width',
+     * 'height' and 'description'. Only 'uri' is required and used for Atom rendering.
+     *
+     * @param array $data
+     * @throws Exception\InvalidArgumentException
+     * @return AbstractFeed
+     */
+    public function setImage(array $data)
+    {
+        if (empty($data['uri']) || !is_string($data['uri'])
+            || !Uri::factory($data['uri'])->isValid()
+        ) {
+            throw new Exception\InvalidArgumentException('Invalid parameter: parameter \'uri\''
+            . ' must be a non-empty string and valid URI/IRI');
+        }
+        $this->data['image'] = $data;
+
+        return $this;
+    }
+
+    /**
+     * Set the feed language
+     *
+     * @param string $language
+     * @throws Exception\InvalidArgumentException
+     * @return AbstractFeed
+     */
+    public function setLanguage($language)
+    {
+        if (empty($language) || !is_string($language)) {
+            throw new Exception\InvalidArgumentException('Invalid parameter: parameter must be a non-empty string');
+        }
+        $this->data['language'] = $language;
+
+        return $this;
+    }
+
+    /**
+     * Set a link to the HTML source
+     *
+     * @param string $link
+     * @throws Exception\InvalidArgumentException
+     * @return AbstractFeed
+     */
+    public function setLink($link)
+    {
+        if (empty($link) || !is_string($link) || !Uri::factory($link)->isValid()) {
+            throw new Exception\InvalidArgumentException('Invalid parameter: parameter must be a non-empty string and valid URI/IRI');
+        }
+        $this->data['link'] = $link;
+
+        return $this;
+    }
+
+    /**
+     * Set a link to an XML feed for any feed type/version
+     *
+     * @param string $link
+     * @param string $type
+     * @throws Exception\InvalidArgumentException
+     * @return AbstractFeed
+     */
+    public function setFeedLink($link, $type)
+    {
+        if (empty($link) || !is_string($link) || !Uri::factory($link)->isValid()) {
+            throw new Exception\InvalidArgumentException('Invalid parameter: "link"" must be a non-empty string and valid URI/IRI');
+        }
+        if (!in_array(strtolower($type), array('rss', 'rdf', 'atom'))) {
+            throw new Exception\InvalidArgumentException('Invalid parameter: "type"; You must declare the type of feed the link points to, i.e. RSS, RDF or Atom');
+        }
+        $this->data['feedLinks'][strtolower($type)] = $link;
+
+        return $this;
+    }
+
+    /**
+     * Set the feed title
+     *
+     * @param string $title
+     * @throws Exception\InvalidArgumentException
+     * @return AbstractFeed
+     */
+    public function setTitle($title)
+    {
+        if (empty($title) || !is_string($title)) {
+            throw new Exception\InvalidArgumentException('Invalid parameter: parameter must be a non-empty string');
+        }
+        $this->data['title'] = $title;
+
+        return $this;
+    }
+
+    /**
+     * Set the feed character encoding
+     *
+     * @param string $encoding
+     * @throws Exception\InvalidArgumentException
+     * @return AbstractFeed
+     */
+    public function setEncoding($encoding)
+    {
+        if (empty($encoding) || !is_string($encoding)) {
+            throw new Exception\InvalidArgumentException('Invalid parameter: parameter must be a non-empty string');
+        }
+        $this->data['encoding'] = $encoding;
+
+        return $this;
+    }
+
+    /**
+     * Set the feed's base URL
+     *
+     * @param string $url
+     * @throws Exception\InvalidArgumentException
+     * @return AbstractFeed
+     */
+    public function setBaseUrl($url)
+    {
+        if (empty($url) || !is_string($url) || !Uri::factory($url)->isValid()) {
+            throw new Exception\InvalidArgumentException('Invalid parameter: "url" array value'
+            . ' must be a non-empty string and valid URI/IRI');
+        }
+        $this->data['baseUrl'] = $url;
+
+        return $this;
+    }
+
+    /**
+     * Add a Pubsubhubbub hub endpoint URL
+     *
+     * @param string $url
+     * @throws Exception\InvalidArgumentException
+     * @return AbstractFeed
+     */
+    public function addHub($url)
+    {
+        if (empty($url) || !is_string($url) || !Uri::factory($url)->isValid()) {
+            throw new Exception\InvalidArgumentException('Invalid parameter: "url" array value'
+            . ' must be a non-empty string and valid URI/IRI');
+        }
+        if (!isset($this->data['hubs'])) {
+            $this->data['hubs'] = array();
+        }
+        $this->data['hubs'][] = $url;
+
+        return $this;
+    }
+
+    /**
+     * Add Pubsubhubbub hub endpoint URLs
+     *
+     * @param array $urls
+     * @return AbstractFeed
+     */
+    public function addHubs(array $urls)
+    {
+        foreach ($urls as $url) {
+            $this->addHub($url);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Add a feed category
+     *
+     * @param array $category
+     * @throws Exception\InvalidArgumentException
+     * @return AbstractFeed
+     */
+    public function addCategory(array $category)
+    {
+        if (!isset($category['term'])) {
+            throw new Exception\InvalidArgumentException('Each category must be an array and '
+            . 'contain at least a "term" element containing the machine '
+            . ' readable category name');
+        }
+        if (isset($category['scheme'])) {
+            if (empty($category['scheme'])
+                || !is_string($category['scheme'])
+                || !Uri::factory($category['scheme'])->isValid()
+            ) {
+                throw new Exception\InvalidArgumentException('The Atom scheme or RSS domain of'
+                . ' a category must be a valid URI');
+            }
+        }
+        if (!isset($this->data['categories'])) {
+            $this->data['categories'] = array();
+        }
+        $this->data['categories'][] = $category;
+
+        return $this;
+    }
+
+    /**
+     * Set an array of feed categories
+     *
+     * @param array $categories
+     * @return AbstractFeed
+     */
+    public function addCategories(array $categories)
+    {
+        foreach ($categories as $category) {
+            $this->addCategory($category);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Get a single author
+     *
+     * @param  int $index
+     * @return string|null
+     */
+    public function getAuthor($index = 0)
+    {
+        if (isset($this->data['authors'][$index])) {
+            return $this->data['authors'][$index];
+        }
+
+        return null;
+    }
+
+    /**
+     * Get an array with feed authors
+     *
+     * @return array
+     */
+    public function getAuthors()
+    {
+        if (!array_key_exists('authors', $this->data)) {
+            return null;
+        }
+        return $this->data['authors'];
+    }
+
+    /**
+     * Get the copyright entry
+     *
+     * @return string|null
+     */
+    public function getCopyright()
+    {
+        if (!array_key_exists('copyright', $this->data)) {
+            return null;
+        }
+        return $this->data['copyright'];
+    }
+
+    /**
+     * Get the feed creation date
+     *
+     * @return string|null
+     */
+    public function getDateCreated()
+    {
+        if (!array_key_exists('dateCreated', $this->data)) {
+            return null;
+        }
+        return $this->data['dateCreated'];
+    }
+
+    /**
+     * Get the feed modification date
+     *
+     * @return string|null
+     */
+    public function getDateModified()
+    {
+        if (!array_key_exists('dateModified', $this->data)) {
+            return null;
+        }
+        return $this->data['dateModified'];
+    }
+
+    /**
+     * Get the feed last-build date
+     *
+     * @return string|null
+     */
+    public function getLastBuildDate()
+    {
+        if (!array_key_exists('lastBuildDate', $this->data)) {
+            return null;
+        }
+        return $this->data['lastBuildDate'];
+    }
+
+    /**
+     * Get the feed description
+     *
+     * @return string|null
+     */
+    public function getDescription()
+    {
+        if (!array_key_exists('description', $this->data)) {
+            return null;
+        }
+        return $this->data['description'];
+    }
+
+    /**
+     * Get the feed generator entry
+     *
+     * @return string|null
+     */
+    public function getGenerator()
+    {
+        if (!array_key_exists('generator', $this->data)) {
+            return null;
+        }
+        return $this->data['generator'];
+    }
+
+    /**
+     * Get the feed ID
+     *
+     * @return string|null
+     */
+    public function getId()
+    {
+        if (!array_key_exists('id', $this->data)) {
+            return null;
+        }
+        return $this->data['id'];
+    }
+
+    /**
+     * Get the feed image URI
+     *
+     * @return array
+     */
+    public function getImage()
+    {
+        if (!array_key_exists('image', $this->data)) {
+            return null;
+        }
+        return $this->data['image'];
+    }
+
+    /**
+     * Get the feed language
+     *
+     * @return string|null
+     */
+    public function getLanguage()
+    {
+        if (!array_key_exists('language', $this->data)) {
+            return null;
+        }
+        return $this->data['language'];
+    }
+
+    /**
+     * Get a link to the HTML source
+     *
+     * @return string|null
+     */
+    public function getLink()
+    {
+        if (!array_key_exists('link', $this->data)) {
+            return null;
+        }
+        return $this->data['link'];
+    }
+
+    /**
+     * Get a link to the XML feed
+     *
+     * @return string|null
+     */
+    public function getFeedLinks()
+    {
+        if (!array_key_exists('feedLinks', $this->data)) {
+            return null;
+        }
+        return $this->data['feedLinks'];
+    }
+
+    /**
+     * Get the feed title
+     *
+     * @return string|null
+     */
+    public function getTitle()
+    {
+        if (!array_key_exists('title', $this->data)) {
+            return null;
+        }
+        return $this->data['title'];
+    }
+
+    /**
+     * Get the feed character encoding
+     *
+     * @return string|null
+     */
+    public function getEncoding()
+    {
+        if (!array_key_exists('encoding', $this->data)) {
+            return 'UTF-8';
+        }
+        return $this->data['encoding'];
+    }
+
+    /**
+     * Get the feed's base url
+     *
+     * @return string|null
+     */
+    public function getBaseUrl()
+    {
+        if (!array_key_exists('baseUrl', $this->data)) {
+            return null;
+        }
+        return $this->data['baseUrl'];
+    }
+
+    /**
+     * Get the URLs used as Pubsubhubbub hubs endpoints
+     *
+     * @return string|null
+     */
+    public function getHubs()
+    {
+        if (!array_key_exists('hubs', $this->data)) {
+            return null;
+        }
+        return $this->data['hubs'];
+    }
+
+    /**
+     * Get the feed categories
+     *
+     * @return string|null
+     */
+    public function getCategories()
+    {
+        if (!array_key_exists('categories', $this->data)) {
+            return null;
+        }
+        return $this->data['categories'];
+    }
+
+    /**
+     * Resets the instance and deletes all data
+     *
+     * @return void
+     */
+    public function reset()
+    {
+        $this->data = array();
+    }
+
+    /**
+     * Set the current feed type being exported to "rss" or "atom". This allows
+     * other objects to gracefully choose whether to execute or not, depending
+     * on their appropriateness for the current type, e.g. renderers.
+     *
+     * @param string $type
+     * @return AbstractFeed
+     */
+    public function setType($type)
+    {
+        $this->type = $type;
+        return $this;
+    }
+
+    /**
+     * Retrieve the current or last feed type exported.
+     *
+     * @return string Value will be "rss" or "atom"
+     */
+    public function getType()
+    {
+        return $this->type;
+    }
+
+    /**
+     * Unset a specific data point
+     *
+     * @param string $name
+     * @return AbstractFeed
+     */
+    public function remove($name)
+    {
+        if (isset($this->data[$name])) {
+            unset($this->data[$name]);
+        }
+        return $this;
+    }
+
+    /**
+     * Method overloading: call given method on first extension implementing it
+     *
+     * @param  string $method
+     * @param  array $args
+     * @return mixed
+     * @throws Exception\BadMethodCallException if no extensions implements the method
+     */
+    public function __call($method, $args)
+    {
+        foreach ($this->extensions as $extension) {
+            try {
+                return call_user_func_array(array($extension, $method), $args);
+            } catch (Exception\BadMethodCallException $e) {
+            }
+        }
+        throw new Exception\BadMethodCallException(
+            'Method: ' . $method . ' does not exist and could not be located on a registered Extension'
+        );
+    }
+
+    /**
+     * Load extensions from Zend\Feed\Writer\Writer
+     *
+     * @throws Exception\RuntimeException
+     * @return void
+     */
+    protected function _loadExtensions()
+    {
+        $all     = Writer::getExtensions();
+        $manager = Writer::getExtensionManager();
+        $exts    = $all['feed'];
+        foreach ($exts as $ext) {
+            if (!$manager->has($ext)) {
+                throw new Exception\RuntimeException(sprintf('Unable to load extension "%s"; could not resolve to class', $ext));
+            }
+            $this->extensions[$ext] = $manager->get($ext);
+            $this->extensions[$ext]->setEncoding($this->getEncoding());
+        }
+    }
+}

3rdparty/ZendFeed/Writer/Deleted.php

@@ -0,0 +1,237 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer;
+
+use DateTime;
+use Zend\Feed\Uri;
+
+/**
+*/
+class Deleted
+{
+
+    /**
+     * Internal array containing all data associated with this entry or item.
+     *
+     * @var array
+     */
+    protected $data = array();
+
+    /**
+     * Holds the value "atom" or "rss" depending on the feed type set when
+     * when last exported.
+     *
+     * @var string
+     */
+    protected $type = null;
+
+    /**
+     * Set the feed character encoding
+     *
+     * @param  $encoding
+     * @throws Exception\InvalidArgumentException
+     * @return string|null
+     * @return Deleted
+     */
+    public function setEncoding($encoding)
+    {
+        if (empty($encoding) || !is_string($encoding)) {
+            throw new Exception\InvalidArgumentException('Invalid parameter: parameter must be a non-empty string');
+        }
+        $this->data['encoding'] = $encoding;
+
+        return $this;
+    }
+
+    /**
+     * Get the feed character encoding
+     *
+     * @return string|null
+     */
+    public function getEncoding()
+    {
+        if (!array_key_exists('encoding', $this->data)) {
+            return 'UTF-8';
+        }
+        return $this->data['encoding'];
+    }
+
+    /**
+     * Unset a specific data point
+     *
+     * @param string $name
+     * @return Deleted
+     */
+    public function remove($name)
+    {
+        if (isset($this->data[$name])) {
+            unset($this->data[$name]);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Set the current feed type being exported to "rss" or "atom". This allows
+     * other objects to gracefully choose whether to execute or not, depending
+     * on their appropriateness for the current type, e.g. renderers.
+     *
+     * @param string $type
+     * @return Deleted
+     */
+    public function setType($type)
+    {
+        $this->type = $type;
+        return $this;
+    }
+
+    /**
+     * Retrieve the current or last feed type exported.
+     *
+     * @return string Value will be "rss" or "atom"
+     */
+    public function getType()
+    {
+        return $this->type;
+    }
+
+    /**
+     * Set reference
+     *
+     * @param $reference
+     * @throws Exception\InvalidArgumentException
+     * @return Deleted
+     */
+    public function setReference($reference)
+    {
+        if (empty($reference) || !is_string($reference)) {
+            throw new Exception\InvalidArgumentException('Invalid parameter: reference must be a non-empty string');
+        }
+        $this->data['reference'] = $reference;
+
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getReference()
+    {
+        if (!array_key_exists('reference', $this->data)) {
+            return null;
+        }
+        return $this->data['reference'];
+    }
+
+    /**
+     * Set when
+     *
+     * @param null|string|DateTime $date
+     * @throws Exception\InvalidArgumentException
+     * @return Deleted
+     */
+    public function setWhen($date = null)
+    {
+        if ($date === null) {
+            $date = new DateTime();
+        } elseif (is_int($date)) {
+            $date = new DateTime('@' . $date);
+        } elseif (!$date instanceof DateTime) {
+            throw new Exception\InvalidArgumentException('Invalid DateTime object or UNIX Timestamp'
+            . ' passed as parameter');
+        }
+        $this->data['when'] = $date;
+
+        return $this;
+    }
+
+    /**
+     * @return DateTime
+     */
+    public function getWhen()
+    {
+        if (!array_key_exists('when', $this->data)) {
+            return null;
+        }
+        return $this->data['when'];
+    }
+
+    /**
+     * Set by
+     *
+     * @param array $by
+     * @throws Exception\InvalidArgumentException
+     * @return Deleted
+     */
+    public function setBy(array $by)
+    {
+        $author = array();
+        if (!array_key_exists('name', $by)
+            || empty($by['name'])
+            || !is_string($by['name'])
+        ) {
+            throw new Exception\InvalidArgumentException('Invalid parameter: author array must include a'
+            . ' "name" key with a non-empty string value');
+        }
+        $author['name'] = $by['name'];
+        if (isset($by['email'])) {
+            if (empty($by['email']) || !is_string($by['email'])) {
+                throw new Exception\InvalidArgumentException('Invalid parameter: "email" array'
+                . ' value must be a non-empty string');
+            }
+            $author['email'] = $by['email'];
+        }
+        if (isset($by['uri'])) {
+            if (empty($by['uri'])
+                || !is_string($by['uri'])
+                || !Uri::factory($by['uri'])->isValid()
+            ) {
+                throw new Exception\InvalidArgumentException('Invalid parameter: "uri" array value must'
+                 . ' be a non-empty string and valid URI/IRI');
+            }
+            $author['uri'] = $by['uri'];
+        }
+        $this->data['by'] = $author;
+
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getBy()
+    {
+        if (!array_key_exists('by', $this->data)) {
+            return null;
+        }
+        return $this->data['by'];
+    }
+
+    /**
+     * @param string $comment
+     * @return Deleted
+     */
+    public function setComment($comment)
+    {
+        $this->data['comment'] = $comment;
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getComment()
+    {
+        if (!array_key_exists('comment', $this->data)) {
+            return null;
+        }
+        return $this->data['comment'];
+    }
+}

3rdparty/ZendFeed/Writer/Entry.php

@@ -0,0 +1,766 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer;
+
+use DateTime;
+use Zend\Feed\Uri;
+
+/**
+*/
+class Entry
+{
+
+    /**
+     * Internal array containing all data associated with this entry or item.
+     *
+     * @var array
+     */
+    protected $data = array();
+
+    /**
+     * Registered extensions
+     *
+     * @var array
+     */
+    protected $extensions = array();
+
+    /**
+     * Holds the value "atom" or "rss" depending on the feed type set when
+     * when last exported.
+     *
+     * @var string
+     */
+    protected $type = null;
+
+    /**
+     * Constructor: Primarily triggers the registration of core extensions and
+     * loads those appropriate to this data container.
+     *
+     */
+    public function __construct()
+    {
+        Writer::registerCoreExtensions();
+        $this->_loadExtensions();
+    }
+
+    /**
+     * Set a single author
+     *
+     * The following option keys are supported:
+     * 'name'  => (string) The name
+     * 'email' => (string) An optional email
+     * 'uri'   => (string) An optional and valid URI
+     *
+     * @param array $author
+     * @throws Exception\InvalidArgumentException If any value of $author not follow the format.
+     * @return Entry
+     */
+    public function addAuthor(array $author)
+    {
+        // Check array values
+        if (!array_key_exists('name', $author)
+            || empty($author['name'])
+            || !is_string($author['name'])
+        ) {
+            throw new Exception\InvalidArgumentException(
+                'Invalid parameter: author array must include a "name" key with a non-empty string value');
+        }
+
+        if (isset($author['email'])) {
+            if (empty($author['email']) || !is_string($author['email'])) {
+                throw new Exception\InvalidArgumentException(
+                    'Invalid parameter: "email" array value must be a non-empty string');
+            }
+        }
+        if (isset($author['uri'])) {
+            if (empty($author['uri']) || !is_string($author['uri']) ||
+                !Uri::factory($author['uri'])->isValid()
+            ) {
+                throw new Exception\InvalidArgumentException(
+                    'Invalid parameter: "uri" array value must be a non-empty string and valid URI/IRI');
+            }
+        }
+
+        $this->data['authors'][] = $author;
+
+        return $this;
+    }
+
+    /**
+     * Set an array with feed authors
+     *
+     * @see addAuthor
+     * @param array $authors
+     * @return Entry
+     */
+    public function addAuthors(array $authors)
+    {
+        foreach ($authors as $author) {
+            $this->addAuthor($author);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Set the feed character encoding
+     *
+     * @param string $encoding
+     * @throws Exception\InvalidArgumentException
+     * @return Entry
+     */
+    public function setEncoding($encoding)
+    {
+        if (empty($encoding) || !is_string($encoding)) {
+            throw new Exception\InvalidArgumentException('Invalid parameter: parameter must be a non-empty string');
+        }
+        $this->data['encoding'] = $encoding;
+
+        return $this;
+    }
+
+    /**
+     * Get the feed character encoding
+     *
+     * @return string|null
+     */
+    public function getEncoding()
+    {
+        if (!array_key_exists('encoding', $this->data)) {
+            return 'UTF-8';
+        }
+        return $this->data['encoding'];
+    }
+
+    /**
+     * Set the copyright entry
+     *
+     * @param string $copyright
+     * @throws Exception\InvalidArgumentException
+     * @return Entry
+     */
+    public function setCopyright($copyright)
+    {
+        if (empty($copyright) || !is_string($copyright)) {
+            throw new Exception\InvalidArgumentException('Invalid parameter: parameter must be a non-empty string');
+        }
+        $this->data['copyright'] = $copyright;
+
+        return $this;
+    }
+
+    /**
+     * Set the entry's content
+     *
+     * @param string $content
+     * @throws Exception\InvalidArgumentException
+     * @return Entry
+     */
+    public function setContent($content)
+    {
+        if (empty($content) || !is_string($content)) {
+            throw new Exception\InvalidArgumentException('Invalid parameter: parameter must be a non-empty string');
+        }
+        $this->data['content'] = $content;
+
+        return $this;
+    }
+
+    /**
+     * Set the feed creation date
+     *
+     * @param null|int|DateTime $date
+     * @throws Exception\InvalidArgumentException
+     * @return Entry
+     */
+    public function setDateCreated($date = null)
+    {
+        if ($date === null) {
+            $date = new DateTime();
+        } elseif (is_int($date)) {
+            $date = new DateTime('@' . $date);
+        } elseif (!$date instanceof DateTime) {
+            throw new Exception\InvalidArgumentException('Invalid DateTime object or UNIX Timestamp passed as parameter');
+        }
+        $this->data['dateCreated'] = $date;
+
+        return $this;
+    }
+
+    /**
+     * Set the feed modification date
+     *
+     * @param null|int|DateTime $date
+     * @throws Exception\InvalidArgumentException
+     * @return Entry
+     */
+    public function setDateModified($date = null)
+    {
+        if ($date === null) {
+            $date = new DateTime();
+        } elseif (is_int($date)) {
+            $date = new DateTime('@' . $date);
+        } elseif (!$date instanceof DateTime) {
+            throw new Exception\InvalidArgumentException('Invalid DateTime object or UNIX Timestamp passed as parameter');
+        }
+        $this->data['dateModified'] = $date;
+
+        return $this;
+    }
+
+    /**
+     * Set the feed description
+     *
+     * @param string $description
+     * @throws Exception\InvalidArgumentException
+     * @return Entry
+     */
+    public function setDescription($description)
+    {
+        if (empty($description) || !is_string($description)) {
+            throw new Exception\InvalidArgumentException('Invalid parameter: parameter must be a non-empty string');
+        }
+        $this->data['description'] = $description;
+
+        return $this;
+    }
+
+    /**
+     * Set the feed ID
+     *
+     * @param string $id
+     * @throws Exception\InvalidArgumentException
+     * @return Entry
+     */
+    public function setId($id)
+    {
+        if (empty($id) || !is_string($id)) {
+            throw new Exception\InvalidArgumentException('Invalid parameter: parameter must be a non-empty string');
+        }
+        $this->data['id'] = $id;
+
+        return $this;
+    }
+
+    /**
+     * Set a link to the HTML source of this entry
+     *
+     * @param string $link
+     * @throws Exception\InvalidArgumentException
+     * @return Entry
+     */
+    public function setLink($link)
+    {
+        if (empty($link) || !is_string($link) || !Uri::factory($link)->isValid()) {
+            throw new Exception\InvalidArgumentException('Invalid parameter: parameter must be a non-empty string and valid URI/IRI');
+        }
+        $this->data['link'] = $link;
+
+        return $this;
+    }
+
+    /**
+     * Set the number of comments associated with this entry
+     *
+     * @param int $count
+     * @throws Exception\InvalidArgumentException
+     * @return Entry
+     */
+    public function setCommentCount($count)
+    {
+        if (!is_numeric($count) || (int) $count != $count || (int) $count < 0) {
+            throw new Exception\InvalidArgumentException('Invalid parameter: "count" must be a positive integer number or zero');
+        }
+        $this->data['commentCount'] = (int) $count;
+
+        return $this;
+    }
+
+    /**
+     * Set a link to a HTML page containing comments associated with this entry
+     *
+     * @param string $link
+     * @throws Exception\InvalidArgumentException
+     * @return Entry
+     */
+    public function setCommentLink($link)
+    {
+        if (empty($link) || !is_string($link) || !Uri::factory($link)->isValid()) {
+            throw new Exception\InvalidArgumentException('Invalid parameter: "link" must be a non-empty string and valid URI/IRI');
+        }
+        $this->data['commentLink'] = $link;
+
+        return $this;
+    }
+
+    /**
+     * Set a link to an XML feed for any comments associated with this entry
+     *
+     * @param array $link
+     * @throws Exception\InvalidArgumentException
+     * @return Entry
+     */
+    public function setCommentFeedLink(array $link)
+    {
+        if (!isset($link['uri']) || !is_string($link['uri']) || !Uri::factory($link['uri'])->isValid()) {
+            throw new Exception\InvalidArgumentException('Invalid parameter: "link" must be a non-empty string and valid URI/IRI');
+        }
+        if (!isset($link['type']) || !in_array($link['type'], array('atom', 'rss', 'rdf'))) {
+            throw new Exception\InvalidArgumentException('Invalid parameter: "type" must be one'
+            . ' of "atom", "rss" or "rdf"');
+        }
+        if (!isset($this->data['commentFeedLinks'])) {
+            $this->data['commentFeedLinks'] = array();
+        }
+        $this->data['commentFeedLinks'][] = $link;
+
+        return $this;
+    }
+
+    /**
+     * Set a links to an XML feed for any comments associated with this entry.
+     * Each link is an array with keys "uri" and "type", where type is one of:
+     * "atom", "rss" or "rdf".
+     *
+     * @param array $links
+     * @return Entry
+     */
+    public function setCommentFeedLinks(array $links)
+    {
+        foreach ($links as $link) {
+            $this->setCommentFeedLink($link);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Set the feed title
+     *
+     * @param string $title
+     * @throws Exception\InvalidArgumentException
+     * @return Entry
+     */
+    public function setTitle($title)
+    {
+        if (empty($title) || !is_string($title)) {
+            throw new Exception\InvalidArgumentException('Invalid parameter: parameter must be a non-empty string');
+        }
+        $this->data['title'] = $title;
+
+        return $this;
+    }
+
+    /**
+     * Get an array with feed authors
+     *
+     * @return array
+     */
+    public function getAuthors()
+    {
+        if (!array_key_exists('authors', $this->data)) {
+            return null;
+        }
+        return $this->data['authors'];
+    }
+
+    /**
+     * Get the entry content
+     *
+     * @return string
+     */
+    public function getContent()
+    {
+        if (!array_key_exists('content', $this->data)) {
+            return null;
+        }
+        return $this->data['content'];
+    }
+
+    /**
+     * Get the entry copyright information
+     *
+     * @return string
+     */
+    public function getCopyright()
+    {
+        if (!array_key_exists('copyright', $this->data)) {
+            return null;
+        }
+        return $this->data['copyright'];
+    }
+
+    /**
+     * Get the entry creation date
+     *
+     * @return string
+     */
+    public function getDateCreated()
+    {
+        if (!array_key_exists('dateCreated', $this->data)) {
+            return null;
+        }
+        return $this->data['dateCreated'];
+    }
+
+    /**
+     * Get the entry modification date
+     *
+     * @return string
+     */
+    public function getDateModified()
+    {
+        if (!array_key_exists('dateModified', $this->data)) {
+            return null;
+        }
+        return $this->data['dateModified'];
+    }
+
+    /**
+     * Get the entry description
+     *
+     * @return string
+     */
+    public function getDescription()
+    {
+        if (!array_key_exists('description', $this->data)) {
+            return null;
+        }
+        return $this->data['description'];
+    }
+
+    /**
+     * Get the entry ID
+     *
+     * @return string
+     */
+    public function getId()
+    {
+        if (!array_key_exists('id', $this->data)) {
+            return null;
+        }
+        return $this->data['id'];
+    }
+
+    /**
+     * Get a link to the HTML source
+     *
+     * @return string|null
+     */
+    public function getLink()
+    {
+        if (!array_key_exists('link', $this->data)) {
+            return null;
+        }
+        return $this->data['link'];
+    }
+
+
+    /**
+     * Get all links
+     *
+     * @return array
+     */
+    public function getLinks()
+    {
+        if (!array_key_exists('links', $this->data)) {
+            return null;
+        }
+        return $this->data['links'];
+    }
+
+    /**
+     * Get the entry title
+     *
+     * @return string
+     */
+    public function getTitle()
+    {
+        if (!array_key_exists('title', $this->data)) {
+            return null;
+        }
+        return $this->data['title'];
+    }
+
+    /**
+     * Get the number of comments/replies for current entry
+     *
+     * @return int
+     */
+    public function getCommentCount()
+    {
+        if (!array_key_exists('commentCount', $this->data)) {
+            return null;
+        }
+        return $this->data['commentCount'];
+    }
+
+    /**
+     * Returns a URI pointing to the HTML page where comments can be made on this entry
+     *
+     * @return string
+     */
+    public function getCommentLink()
+    {
+        if (!array_key_exists('commentLink', $this->data)) {
+            return null;
+        }
+        return $this->data['commentLink'];
+    }
+
+    /**
+     * Returns an array of URIs pointing to a feed of all comments for this entry
+     * where the array keys indicate the feed type (atom, rss or rdf).
+     *
+     * @return string
+     */
+    public function getCommentFeedLinks()
+    {
+        if (!array_key_exists('commentFeedLinks', $this->data)) {
+            return null;
+        }
+        return $this->data['commentFeedLinks'];
+    }
+
+    /**
+     * Add an entry category
+     *
+     * @param array $category
+     * @throws Exception\InvalidArgumentException
+     * @return Entry
+     */
+    public function addCategory(array $category)
+    {
+        if (!isset($category['term'])) {
+            throw new Exception\InvalidArgumentException('Each category must be an array and '
+            . 'contain at least a "term" element containing the machine '
+            . ' readable category name');
+        }
+        if (isset($category['scheme'])) {
+            if (empty($category['scheme'])
+                || !is_string($category['scheme'])
+                || !Uri::factory($category['scheme'])->isValid()
+            ) {
+                throw new Exception\InvalidArgumentException('The Atom scheme or RSS domain of'
+                . ' a category must be a valid URI');
+            }
+        }
+        if (!isset($this->data['categories'])) {
+            $this->data['categories'] = array();
+        }
+        $this->data['categories'][] = $category;
+
+        return $this;
+    }
+
+    /**
+     * Set an array of entry categories
+     *
+     * @param array $categories
+     * @return Entry
+     */
+    public function addCategories(array $categories)
+    {
+        foreach ($categories as $category) {
+            $this->addCategory($category);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Get the entry categories
+     *
+     * @return string|null
+     */
+    public function getCategories()
+    {
+        if (!array_key_exists('categories', $this->data)) {
+            return null;
+        }
+        return $this->data['categories'];
+    }
+
+    /**
+     * Adds an enclosure to the entry. The array parameter may contain the
+     * keys 'uri', 'type' and 'length'. Only 'uri' is required for Atom, though the
+     * others must also be provided or RSS rendering (where they are required)
+     * will throw an Exception.
+     *
+     * @param array $enclosure
+     * @throws Exception\InvalidArgumentException
+     * @return Entry
+     */
+    public function setEnclosure(array $enclosure)
+    {
+        if (!isset($enclosure['uri'])) {
+            throw new Exception\InvalidArgumentException('Enclosure "uri" is not set');
+        }
+        if (!Uri::factory($enclosure['uri'])->isValid()) {
+            throw new Exception\InvalidArgumentException('Enclosure "uri" is not a valid URI/IRI');
+        }
+        $this->data['enclosure'] = $enclosure;
+
+        return $this;
+    }
+
+    /**
+     * Retrieve an array of all enclosures to be added to entry.
+     *
+     * @return array
+     */
+    public function getEnclosure()
+    {
+        if (!array_key_exists('enclosure', $this->data)) {
+            return null;
+        }
+        return $this->data['enclosure'];
+    }
+
+    /**
+     * Unset a specific data point
+     *
+     * @param string $name
+     * @return Entry
+     */
+    public function remove($name)
+    {
+        if (isset($this->data[$name])) {
+            unset($this->data[$name]);
+        }
+
+        return $this;
+    }
+
+    /**
+     * Get registered extensions
+     *
+     * @return array
+     */
+    public function getExtensions()
+    {
+        return $this->extensions;
+    }
+
+    /**
+     * Return an Extension object with the matching name (postfixed with _Entry)
+     *
+     * @param string $name
+     * @return object
+     */
+    public function getExtension($name)
+    {
+        if (array_key_exists($name . '\\Entry', $this->extensions)) {
+            return $this->extensions[$name . '\\Entry'];
+        }
+        return null;
+    }
+
+    /**
+     * Set the current feed type being exported to "rss" or "atom". This allows
+     * other objects to gracefully choose whether to execute or not, depending
+     * on their appropriateness for the current type, e.g. renderers.
+     *
+     * @param string $type
+     * @return Entry
+     */
+    public function setType($type)
+    {
+        $this->type = $type;
+        return $this;
+    }
+
+    /**
+     * Retrieve the current or last feed type exported.
+     *
+     * @return string Value will be "rss" or "atom"
+     */
+    public function getType()
+    {
+        return $this->type;
+    }
+
+    /**
+     * Method overloading: call given method on first extension implementing it
+     *
+     * @param  string $method
+     * @param  array $args
+     * @return mixed
+     * @throws Exception\BadMethodCallException if no extensions implements the method
+     */
+    public function __call($method, $args)
+    {
+        foreach ($this->extensions as $extension) {
+            try {
+                return call_user_func_array(array($extension, $method), $args);
+            } catch (\BadMethodCallException $e) {
+            }
+        }
+        throw new Exception\BadMethodCallException('Method: ' . $method
+            . ' does not exist and could not be located on a registered Extension');
+    }
+
+    /**
+     * Creates a new Zend\Feed\Writer\Source data container for use. This is NOT
+     * added to the current feed automatically, but is necessary to create a
+     * container with some initial values preset based on the current feed data.
+     *
+     * @return Source
+     */
+    public function createSource()
+    {
+        $source = new Source;
+        if ($this->getEncoding()) {
+            $source->setEncoding($this->getEncoding());
+        }
+        $source->setType($this->getType());
+        return $source;
+    }
+
+    /**
+     * Appends a Zend\Feed\Writer\Entry object representing a new entry/item
+     * the feed data container's internal group of entries.
+     *
+     * @param Source $source
+     * @return Entry
+     */
+    public function setSource(Source $source)
+    {
+        $this->data['source'] = $source;
+        return $this;
+    }
+
+    /**
+     * @return Source
+     */
+    public function getSource()
+    {
+        if (isset($this->data['source'])) {
+            return $this->data['source'];
+        }
+        return null;
+    }
+
+    /**
+     * Load extensions from Zend\Feed\Writer\Writer
+     *
+     * @return void
+     */
+    protected function _loadExtensions()
+    {
+        $all     = Writer::getExtensions();
+        $manager = Writer::getExtensionManager();
+        $exts    = $all['entry'];
+        foreach ($exts as $ext) {
+            $this->extensions[$ext] = $manager->get($ext);
+            $this->extensions[$ext]->setEncoding($this->getEncoding());
+        }
+    }
+}

3rdparty/ZendFeed/Writer/Exception/BadMethodCallException.php

@@ -0,0 +1,22 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer\Exception;
+
+use Zend\Feed\Exception;
+
+/**
+ * Feed exceptions
+ *
+ * Class to represent exceptions that occur during Feed operations.
+ */
+class BadMethodCallException
+    extends Exception\BadMethodCallException
+    implements ExceptionInterface
+{}

3rdparty/ZendFeed/Writer/Exception/ExceptionInterface.php

@@ -0,0 +1,19 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer\Exception;
+
+/**
+ * Feed exceptions
+ *
+ * Interface to represent exceptions that occur during Feed operations.
+ */
+interface ExceptionInterface
+{
+}

3rdparty/ZendFeed/Writer/Exception/InvalidArgumentException.php

@@ -0,0 +1,22 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer\Exception;
+
+use Zend\Feed\Exception;
+
+/**
+ * Feed exceptions
+ *
+ * Class to represent exceptions that occur during Feed operations.
+ */
+class InvalidArgumentException
+    extends Exception\InvalidArgumentException
+    implements ExceptionInterface
+{}

3rdparty/ZendFeed/Writer/Exception/RuntimeException.php

@@ -0,0 +1,17 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer\Exception;
+
+use Zend\Feed\Exception;
+
+class RuntimeException
+    extends Exception\RuntimeException
+    implements ExceptionInterface
+{}

3rdparty/ZendFeed/Writer/Extension/AbstractRenderer.php

@@ -0,0 +1,164 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer\Extension;
+
+use DOMDocument;
+use DOMElement;
+
+/**
+*/
+abstract class AbstractRenderer implements RendererInterface
+{
+    /**
+     * @var DOMDocument
+     */
+    protected $dom = null;
+
+    /**
+     * @var mixed
+     */
+    protected $entry = null;
+
+    /**
+     * @var DOMElement
+     */
+    protected $base = null;
+
+    /**
+     * @var mixed
+     */
+    protected $container = null;
+
+    /**
+     * @var string
+     */
+    protected $type = null;
+
+    /**
+     * @var DOMElement
+     */
+    protected $rootElement = null;
+
+    /**
+     * Encoding of all text values
+     *
+     * @var string
+     */
+    protected $encoding = 'UTF-8';
+
+    /**
+     * Set the data container
+     *
+     * @param  mixed $container
+     * @return AbstractRenderer
+     */
+    public function setDataContainer($container)
+    {
+        $this->container = $container;
+        return $this;
+    }
+
+    /**
+     * Set feed encoding
+     *
+     * @param  string $enc
+     * @return AbstractRenderer
+     */
+    public function setEncoding($enc)
+    {
+        $this->encoding = $enc;
+        return $this;
+    }
+
+    /**
+     * Get feed encoding
+     *
+     * @return string
+     */
+    public function getEncoding()
+    {
+        return $this->encoding;
+    }
+
+    /**
+     * Set DOMDocument and DOMElement on which to operate
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $base
+     * @return AbstractRenderer
+     */
+    public function setDomDocument(DOMDocument $dom, DOMElement $base)
+    {
+        $this->dom  = $dom;
+        $this->base = $base;
+        return $this;
+    }
+
+    /**
+     * Get data container being rendered
+     *
+     * @return mixed
+     */
+    public function getDataContainer()
+    {
+        return $this->container;
+    }
+
+    /**
+     * Set feed type
+     *
+     * @param  string $type
+     * @return AbstractRenderer
+     */
+    public function setType($type)
+    {
+        $this->type = $type;
+        return $this;
+    }
+
+    /**
+     * Get feedtype
+     *
+     * @return string
+     */
+    public function getType()
+    {
+        return $this->type;
+    }
+
+    /**
+     * Set root element of document
+     *
+     * @param  DOMElement $root
+     * @return AbstractRenderer
+     */
+    public function setRootElement(DOMElement $root)
+    {
+        $this->rootElement = $root;
+        return $this;
+    }
+
+    /**
+     * Get root element
+     *
+     * @return DOMElement
+     */
+    public function getRootElement()
+    {
+        return $this->rootElement;
+    }
+
+    /**
+     * Append namespaces to feed
+     *
+     * @return void
+     */
+    abstract protected function _appendNamespaces();
+}

3rdparty/ZendFeed/Writer/Extension/Atom/Renderer/Feed.php

@@ -0,0 +1,109 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer\Extension\Atom\Renderer;
+
+use DOMDocument;
+use DOMElement;
+use Zend\Feed\Writer\Extension;
+
+/**
+*/
+class Feed extends Extension\AbstractRenderer
+{
+
+    /**
+     * Set to TRUE if a rendering method actually renders something. This
+     * is used to prevent premature appending of a XML namespace declaration
+     * until an element which requires it is actually appended.
+     *
+     * @var bool
+     */
+    protected $called = false;
+
+    /**
+     * Render feed
+     *
+     * @return void
+     */
+    public function render()
+    {
+        /**
+         * RSS 2.0 only. Used mainly to include Atom links and
+         * Pubsubhubbub Hub endpoint URIs under the Atom namespace
+         */
+        if (strtolower($this->getType()) == 'atom') {
+            return;
+        }
+        $this->_setFeedLinks($this->dom, $this->base);
+        $this->_setHubs($this->dom, $this->base);
+        if ($this->called) {
+            $this->_appendNamespaces();
+        }
+    }
+
+    /**
+     * Append namespaces to root element of feed
+     *
+     * @return void
+     */
+    protected function _appendNamespaces()
+    {
+        $this->getRootElement()->setAttribute('xmlns:atom',
+            'http://www.w3.org/2005/Atom');
+    }
+
+    /**
+     * Set feed link elements
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setFeedLinks(DOMDocument $dom, DOMElement $root)
+    {
+        $flinks = $this->getDataContainer()->getFeedLinks();
+        if (!$flinks || empty($flinks)) {
+            return;
+        }
+        foreach ($flinks as $type => $href) {
+            if (strtolower($type) == $this->getType()) { // issue 2605
+                $mime  = 'application/' . strtolower($type) . '+xml';
+                $flink = $dom->createElement('atom:link');
+                $root->appendChild($flink);
+                $flink->setAttribute('rel', 'self');
+                $flink->setAttribute('type', $mime);
+                $flink->setAttribute('href', $href);
+            }
+        }
+        $this->called = true;
+    }
+
+    /**
+     * Set PuSH hubs
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setHubs(DOMDocument $dom, DOMElement $root)
+    {
+        $hubs = $this->getDataContainer()->getHubs();
+        if (!$hubs || empty($hubs)) {
+            return;
+        }
+        foreach ($hubs as $hubUrl) {
+            $hub = $dom->createElement('atom:link');
+            $hub->setAttribute('rel', 'hub');
+            $hub->setAttribute('href', $hubUrl);
+            $root->appendChild($hub);
+        }
+        $this->called = true;
+    }
+}

3rdparty/ZendFeed/Writer/Extension/Content/Renderer/Entry.php

@@ -0,0 +1,76 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer\Extension\Content\Renderer;
+
+use DOMDocument;
+use DOMElement;
+use Zend\Feed\Writer\Extension;
+
+/**
+*/
+class Entry extends Extension\AbstractRenderer
+{
+
+    /**
+     * Set to TRUE if a rendering method actually renders something. This
+     * is used to prevent premature appending of a XML namespace declaration
+     * until an element which requires it is actually appended.
+     *
+     * @var bool
+     */
+    protected $called = false;
+
+    /**
+     * Render entry
+     *
+     * @return void
+     */
+    public function render()
+    {
+        if (strtolower($this->getType()) == 'atom') {
+            return;
+        }
+        $this->_setContent($this->dom, $this->base);
+        if ($this->called) {
+            $this->_appendNamespaces();
+        }
+    }
+
+    /**
+     * Append namespaces to root element
+     *
+     * @return void
+     */
+    protected function _appendNamespaces()
+    {
+        $this->getRootElement()->setAttribute('xmlns:content',
+            'http://purl.org/rss/1.0/modules/content/');
+    }
+
+    /**
+     * Set entry content
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setContent(DOMDocument $dom, DOMElement $root)
+    {
+        $content = $this->getDataContainer()->getContent();
+        if (!$content) {
+            return;
+        }
+        $element = $dom->createElement('content:encoded');
+        $root->appendChild($element);
+        $cdata = $dom->createCDATASection($content);
+        $element->appendChild($cdata);
+        $this->called = true;
+    }
+}

3rdparty/ZendFeed/Writer/Extension/DublinCore/Renderer/Entry.php

@@ -0,0 +1,80 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer\Extension\DublinCore\Renderer;
+
+use DOMDocument;
+use DOMElement;
+use Zend\Feed\Writer\Extension;
+
+/**
+*/
+class Entry extends Extension\AbstractRenderer
+{
+
+    /**
+     * Set to TRUE if a rendering method actually renders something. This
+     * is used to prevent premature appending of a XML namespace declaration
+     * until an element which requires it is actually appended.
+     *
+     * @var bool
+     */
+    protected $called = false;
+
+    /**
+     * Render entry
+     *
+     * @return void
+     */
+    public function render()
+    {
+        if (strtolower($this->getType()) == 'atom') {
+            return;
+        }
+        $this->_setAuthors($this->dom, $this->base);
+        if ($this->called) {
+            $this->_appendNamespaces();
+        }
+    }
+
+    /**
+     * Append namespaces to entry
+     *
+     * @return void
+     */
+    protected function _appendNamespaces()
+    {
+        $this->getRootElement()->setAttribute('xmlns:dc',
+            'http://purl.org/dc/elements/1.1/');
+    }
+
+    /**
+     * Set entry author elements
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setAuthors(DOMDocument $dom, DOMElement $root)
+    {
+        $authors = $this->getDataContainer()->getAuthors();
+        if (!$authors || empty($authors)) {
+            return;
+        }
+        foreach ($authors as $data) {
+            $author = $this->dom->createElement('dc:creator');
+            if (array_key_exists('name', $data)) {
+                $text = $dom->createTextNode($data['name']);
+                $author->appendChild($text);
+                $root->appendChild($author);
+            }
+        }
+        $this->called = true;
+    }
+}

3rdparty/ZendFeed/Writer/Extension/DublinCore/Renderer/Feed.php

@@ -0,0 +1,80 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer\Extension\DublinCore\Renderer;
+
+use DOMDocument;
+use DOMElement;
+use Zend\Feed\Writer\Extension;
+
+/**
+*/
+class Feed extends Extension\AbstractRenderer
+{
+
+    /**
+     * Set to TRUE if a rendering method actually renders something. This
+     * is used to prevent premature appending of a XML namespace declaration
+     * until an element which requires it is actually appended.
+     *
+     * @var bool
+     */
+    protected $called = false;
+
+    /**
+     * Render feed
+     *
+     * @return void
+     */
+    public function render()
+    {
+        if (strtolower($this->getType()) == 'atom') {
+            return;
+        }
+        $this->_setAuthors($this->dom, $this->base);
+        if ($this->called) {
+            $this->_appendNamespaces();
+        }
+    }
+
+    /**
+     * Append namespaces to feed element
+     *
+     * @return void
+     */
+    protected function _appendNamespaces()
+    {
+        $this->getRootElement()->setAttribute('xmlns:dc',
+            'http://purl.org/dc/elements/1.1/');
+    }
+
+    /**
+     * Set feed authors
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setAuthors(DOMDocument $dom, DOMElement $root)
+    {
+        $authors = $this->getDataContainer()->getAuthors();
+        if (!$authors || empty($authors)) {
+            return;
+        }
+        foreach ($authors as $data) {
+            $author = $this->dom->createElement('dc:creator');
+            if (array_key_exists('name', $data)) {
+                $text = $dom->createTextNode($data['name']);
+                $author->appendChild($text);
+                $root->appendChild($author);
+            }
+        }
+        $this->called = true;
+    }
+}

3rdparty/ZendFeed/Writer/Extension/ITunes/Entry.php

@@ -0,0 +1,246 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer\Extension\ITunes;
+
+use Zend\Feed\Writer;
+use Zend\Feed\Writer\Extension;
+use Zend\Stdlib\StringUtils;
+use Zend\Stdlib\StringWrapper\StringWrapperInterface;
+
+/**
+*/
+class Entry
+{
+    /**
+     * Array of Feed data for rendering by Extension's renderers
+     *
+     * @var array
+     */
+    protected $data = array();
+
+    /**
+     * Encoding of all text values
+     *
+     * @var string
+     */
+    protected $encoding = 'UTF-8';
+
+    /**
+     * The used string wrapper supporting encoding
+     *
+     * @var StringWrapperInterface
+     */
+    protected $stringWrapper;
+
+    public function __construct()
+    {
+        $this->stringWrapper = StringUtils::getWrapper($this->encoding);
+    }
+
+    /**
+     * Set feed encoding
+     *
+     * @param  string $enc
+     * @return Entry
+     */
+    public function setEncoding($enc)
+    {
+        $this->stringWrapper = StringUtils::getWrapper($enc);
+        $this->encoding      = $enc;
+        return $this;
+    }
+
+    /**
+     * Get feed encoding
+     *
+     * @return string
+     */
+    public function getEncoding()
+    {
+        return $this->encoding;
+    }
+
+    /**
+     * Set a block value of "yes" or "no". You may also set an empty string.
+     *
+     * @param  string
+     * @return Entry
+     * @throws Writer\Exception\InvalidArgumentException
+     */
+    public function setItunesBlock($value)
+    {
+        if (!ctype_alpha($value) && strlen($value) > 0) {
+            throw new Writer\Exception\InvalidArgumentException('invalid parameter: "block" may only'
+            . ' contain alphabetic characters');
+        }
+
+        if ($this->stringWrapper->strlen($value) > 255) {
+            throw new Writer\Exception\InvalidArgumentException('invalid parameter: "block" may only'
+            . ' contain a maximum of 255 characters');
+        }
+        $this->data['block'] = $value;
+    }
+
+    /**
+     * Add authors to itunes entry
+     *
+     * @param  array $values
+     * @return Entry
+     */
+    public function addItunesAuthors(array $values)
+    {
+        foreach ($values as $value) {
+            $this->addItunesAuthor($value);
+        }
+        return $this;
+    }
+
+    /**
+     * Add author to itunes entry
+     *
+     * @param  string $value
+     * @return Entry
+     * @throws Writer\Exception\InvalidArgumentException
+     */
+    public function addItunesAuthor($value)
+    {
+        if ($this->stringWrapper->strlen($value) > 255) {
+            throw new Writer\Exception\InvalidArgumentException('invalid parameter: any "author" may only'
+            . ' contain a maximum of 255 characters each');
+        }
+        if (!isset($this->data['authors'])) {
+            $this->data['authors'] = array();
+        }
+        $this->data['authors'][] = $value;
+        return $this;
+    }
+
+    /**
+     * Set duration
+     *
+     * @param  int $value
+     * @return Entry
+     * @throws Writer\Exception\InvalidArgumentException
+     */
+    public function setItunesDuration($value)
+    {
+        $value = (string) $value;
+        if (!ctype_digit($value)
+            && !preg_match("/^\d+:[0-5]{1}[0-9]{1}$/", $value)
+            && !preg_match("/^\d+:[0-5]{1}[0-9]{1}:[0-5]{1}[0-9]{1}$/", $value)
+        ) {
+            throw new Writer\Exception\InvalidArgumentException('invalid parameter: "duration" may only'
+            . ' be of a specified [[HH:]MM:]SS format');
+        }
+        $this->data['duration'] = $value;
+        return $this;
+    }
+
+    /**
+     * Set "explicit" flag
+     *
+     * @param  bool $value
+     * @return Entry
+     * @throws Writer\Exception\InvalidArgumentException
+     */
+    public function setItunesExplicit($value)
+    {
+        if (!in_array($value, array('yes', 'no', 'clean'))) {
+            throw new Writer\Exception\InvalidArgumentException('invalid parameter: "explicit" may only'
+            . ' be one of "yes", "no" or "clean"');
+        }
+        $this->data['explicit'] = $value;
+        return $this;
+    }
+
+    /**
+     * Set keywords
+     *
+     * @param  array $value
+     * @return Entry
+     * @throws Writer\Exception\InvalidArgumentException
+     */
+    public function setItunesKeywords(array $value)
+    {
+        if (count($value) > 12) {
+            throw new Writer\Exception\InvalidArgumentException('invalid parameter: "keywords" may only'
+            . ' contain a maximum of 12 terms');
+        }
+
+        $concat = implode(',', $value);
+        if ($this->stringWrapper->strlen($concat) > 255) {
+            throw new Writer\Exception\InvalidArgumentException('invalid parameter: "keywords" may only'
+            . ' have a concatenated length of 255 chars where terms are delimited'
+            . ' by a comma');
+        }
+        $this->data['keywords'] = $value;
+        return $this;
+    }
+
+    /**
+     * Set subtitle
+     *
+     * @param  string $value
+     * @return Entry
+     * @throws Writer\Exception\InvalidArgumentException
+     */
+    public function setItunesSubtitle($value)
+    {
+        if ($this->stringWrapper->strlen($value) > 255) {
+            throw new Writer\Exception\InvalidArgumentException('invalid parameter: "subtitle" may only'
+            . ' contain a maximum of 255 characters');
+        }
+        $this->data['subtitle'] = $value;
+        return $this;
+    }
+
+    /**
+     * Set summary
+     *
+     * @param  string $value
+     * @return Entry
+     * @throws Writer\Exception\InvalidArgumentException
+     */
+    public function setItunesSummary($value)
+    {
+        if ($this->stringWrapper->strlen($value) > 4000) {
+            throw new Writer\Exception\InvalidArgumentException('invalid parameter: "summary" may only'
+            . ' contain a maximum of 4000 characters');
+        }
+        $this->data['summary'] = $value;
+        return $this;
+    }
+
+    /**
+     * Overloading to itunes specific setters
+     *
+     * @param  string $method
+     * @param  array $params
+     * @throws Writer\Exception\BadMethodCallException
+     * @return mixed
+     */
+    public function __call($method, array $params)
+    {
+        $point = lcfirst(substr($method, 9));
+        if (!method_exists($this, 'setItunes' . ucfirst($point))
+            && !method_exists($this, 'addItunes' . ucfirst($point))
+        ) {
+            throw new Writer\Exception\BadMethodCallException(
+                'invalid method: ' . $method
+            );
+        }
+        if (!array_key_exists($point, $this->data)
+            || empty($this->data[$point])
+        ) {
+            return null;
+        }
+        return $this->data[$point];
+    }
+}

3rdparty/ZendFeed/Writer/Extension/ITunes/Feed.php

@@ -0,0 +1,362 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer\Extension\ITunes;
+
+use Zend\Feed\Uri;
+use Zend\Feed\Writer;
+use Zend\Stdlib\StringUtils;
+use Zend\Stdlib\StringWrapper\StringWrapperInterface;
+
+/**
+*/
+class Feed
+{
+    /**
+     * Array of Feed data for rendering by Extension's renderers
+     *
+     * @var array
+     */
+    protected $data = array();
+
+    /**
+     * Encoding of all text values
+     *
+     * @var string
+     */
+    protected $encoding = 'UTF-8';
+
+    /**
+     * The used string wrapper supporting encoding
+     *
+     * @var StringWrapperInterface
+     */
+    protected $stringWrapper;
+
+    /**
+     * Constructor
+     */
+    public function __construct()
+    {
+        $this->stringWrapper = StringUtils::getWrapper($this->encoding);
+    }
+
+    /**
+     * Set feed encoding
+     *
+     * @param  string $enc
+     * @return Feed
+     */
+    public function setEncoding($enc)
+    {
+        $this->stringWrapper = StringUtils::getWrapper($enc);
+        $this->encoding      = $enc;
+        return $this;
+    }
+
+    /**
+     * Get feed encoding
+     *
+     * @return string
+     */
+    public function getEncoding()
+    {
+        return $this->encoding;
+    }
+
+    /**
+     * Set a block value of "yes" or "no". You may also set an empty string.
+     *
+     * @param  string
+     * @return Feed
+     * @throws Writer\Exception\InvalidArgumentException
+     */
+    public function setItunesBlock($value)
+    {
+        if (!ctype_alpha($value) && strlen($value) > 0) {
+            throw new Writer\Exception\InvalidArgumentException('invalid parameter: "block" may only'
+            . ' contain alphabetic characters');
+        }
+        if ($this->stringWrapper->strlen($value) > 255) {
+            throw new Writer\Exception\InvalidArgumentException('invalid parameter: "block" may only'
+            . ' contain a maximum of 255 characters');
+        }
+        $this->data['block'] = $value;
+        return $this;
+    }
+
+    /**
+     * Add feed authors
+     *
+     * @param  array $values
+     * @return Feed
+     */
+    public function addItunesAuthors(array $values)
+    {
+        foreach ($values as $value) {
+            $this->addItunesAuthor($value);
+        }
+        return $this;
+    }
+
+    /**
+     * Add feed author
+     *
+     * @param  string $value
+     * @return Feed
+     * @throws Writer\Exception\InvalidArgumentException
+     */
+    public function addItunesAuthor($value)
+    {
+        if ($this->stringWrapper->strlen($value) > 255) {
+            throw new Writer\Exception\InvalidArgumentException('invalid parameter: any "author" may only'
+            . ' contain a maximum of 255 characters each');
+        }
+        if (!isset($this->data['authors'])) {
+            $this->data['authors'] = array();
+        }
+        $this->data['authors'][] = $value;
+        return $this;
+    }
+
+    /**
+     * Set feed categories
+     *
+     * @param  array $values
+     * @return Feed
+     * @throws Writer\Exception\InvalidArgumentException
+     */
+    public function setItunesCategories(array $values)
+    {
+        if (!isset($this->data['categories'])) {
+            $this->data['categories'] = array();
+        }
+        foreach ($values as $key => $value) {
+            if (!is_array($value)) {
+                if ($this->stringWrapper->strlen($value) > 255) {
+                    throw new Writer\Exception\InvalidArgumentException('invalid parameter: any "category" may only'
+                    . ' contain a maximum of 255 characters each');
+                }
+                $this->data['categories'][] = $value;
+            } else {
+                if ($this->stringWrapper->strlen($key) > 255) {
+                    throw new Writer\Exception\InvalidArgumentException('invalid parameter: any "category" may only'
+                    . ' contain a maximum of 255 characters each');
+                }
+                $this->data['categories'][$key] = array();
+                foreach ($value as $val) {
+                    if ($this->stringWrapper->strlen($val) > 255) {
+                        throw new Writer\Exception\InvalidArgumentException('invalid parameter: any "category" may only'
+                        . ' contain a maximum of 255 characters each');
+                    }
+                    $this->data['categories'][$key][] = $val;
+                }
+            }
+        }
+        return $this;
+    }
+
+    /**
+     * Set feed image (icon)
+     *
+     * @param  string $value
+     * @return Feed
+     * @throws Writer\Exception\InvalidArgumentException
+     */
+    public function setItunesImage($value)
+    {
+        if (!Uri::factory($value)->isValid()) {
+            throw new Writer\Exception\InvalidArgumentException('invalid parameter: "image" may only'
+            . ' be a valid URI/IRI');
+        }
+        if (!in_array(substr($value, -3), array('jpg', 'png'))) {
+            throw new Writer\Exception\InvalidArgumentException('invalid parameter: "image" may only'
+            . ' use file extension "jpg" or "png" which must be the last three'
+            . ' characters of the URI (i.e. no query string or fragment)');
+        }
+        $this->data['image'] = $value;
+        return $this;
+    }
+
+    /**
+     * Set feed cumulative duration
+     *
+     * @param  string $value
+     * @return Feed
+     * @throws Writer\Exception\InvalidArgumentException
+     */
+    public function setItunesDuration($value)
+    {
+        $value = (string) $value;
+        if (!ctype_digit($value)
+            && !preg_match("/^\d+:[0-5]{1}[0-9]{1}$/", $value)
+            && !preg_match("/^\d+:[0-5]{1}[0-9]{1}:[0-5]{1}[0-9]{1}$/", $value)
+        ) {
+            throw new Writer\Exception\InvalidArgumentException('invalid parameter: "duration" may only'
+            . ' be of a specified [[HH:]MM:]SS format');
+        }
+        $this->data['duration'] = $value;
+        return $this;
+    }
+
+    /**
+     * Set "explicit" flag
+     *
+     * @param  bool $value
+     * @return Feed
+     * @throws Writer\Exception\InvalidArgumentException
+     */
+    public function setItunesExplicit($value)
+    {
+        if (!in_array($value, array('yes', 'no', 'clean'))) {
+            throw new Writer\Exception\InvalidArgumentException('invalid parameter: "explicit" may only'
+            . ' be one of "yes", "no" or "clean"');
+        }
+        $this->data['explicit'] = $value;
+        return $this;
+    }
+
+    /**
+     * Set feed keywords
+     *
+     * @param  array $value
+     * @return Feed
+     * @throws Writer\Exception\InvalidArgumentException
+     */
+    public function setItunesKeywords(array $value)
+    {
+        if (count($value) > 12) {
+            throw new Writer\Exception\InvalidArgumentException('invalid parameter: "keywords" may only'
+            . ' contain a maximum of 12 terms');
+        }
+        $concat = implode(',', $value);
+        if ($this->stringWrapper->strlen($concat) > 255) {
+            throw new Writer\Exception\InvalidArgumentException('invalid parameter: "keywords" may only'
+            . ' have a concatenated length of 255 chars where terms are delimited'
+            . ' by a comma');
+        }
+        $this->data['keywords'] = $value;
+        return $this;
+    }
+
+    /**
+     * Set new feed URL
+     *
+     * @param  string $value
+     * @return Feed
+     * @throws Writer\Exception\InvalidArgumentException
+     */
+    public function setItunesNewFeedUrl($value)
+    {
+        if (!Uri::factory($value)->isValid()) {
+            throw new Writer\Exception\InvalidArgumentException('invalid parameter: "newFeedUrl" may only'
+            . ' be a valid URI/IRI');
+        }
+        $this->data['newFeedUrl'] = $value;
+        return $this;
+    }
+
+    /**
+     * Add feed owners
+     *
+     * @param  array $values
+     * @return Feed
+     */
+    public function addItunesOwners(array $values)
+    {
+        foreach ($values as $value) {
+            $this->addItunesOwner($value);
+        }
+        return $this;
+    }
+
+    /**
+     * Add feed owner
+     *
+     * @param  array $value
+     * @return Feed
+     * @throws Writer\Exception\InvalidArgumentException
+     */
+    public function addItunesOwner(array $value)
+    {
+        if (!isset($value['name']) || !isset($value['email'])) {
+            throw new Writer\Exception\InvalidArgumentException('invalid parameter: any "owner" must'
+            . ' be an array containing keys "name" and "email"');
+        }
+        if ($this->stringWrapper->strlen($value['name']) > 255
+            || $this->stringWrapper->strlen($value['email']) > 255
+        ) {
+            throw new Writer\Exception\InvalidArgumentException('invalid parameter: any "owner" may only'
+            . ' contain a maximum of 255 characters each for "name" and "email"');
+        }
+        if (!isset($this->data['owners'])) {
+            $this->data['owners'] = array();
+        }
+        $this->data['owners'][] = $value;
+        return $this;
+    }
+
+    /**
+     * Set feed subtitle
+     *
+     * @param  string $value
+     * @return Feed
+     * @throws Writer\Exception\InvalidArgumentException
+     */
+    public function setItunesSubtitle($value)
+    {
+        if ($this->stringWrapper->strlen($value) > 255) {
+            throw new Writer\Exception\InvalidArgumentException('invalid parameter: "subtitle" may only'
+            . ' contain a maximum of 255 characters');
+        }
+        $this->data['subtitle'] = $value;
+        return $this;
+    }
+
+    /**
+     * Set feed summary
+     *
+     * @param  string $value
+     * @return Feed
+     * @throws Writer\Exception\InvalidArgumentException
+     */
+    public function setItunesSummary($value)
+    {
+        if ($this->stringWrapper->strlen($value) > 4000) {
+            throw new Writer\Exception\InvalidArgumentException('invalid parameter: "summary" may only'
+            . ' contain a maximum of 4000 characters');
+        }
+        $this->data['summary'] = $value;
+        return $this;
+    }
+
+    /**
+     * Overloading: proxy to internal setters
+     *
+     * @param  string $method
+     * @param  array $params
+     * @return mixed
+     * @throws Writer\Exception\BadMethodCallException
+     */
+    public function __call($method, array $params)
+    {
+        $point = lcfirst(substr($method, 9));
+        if (!method_exists($this, 'setItunes' . ucfirst($point))
+            && !method_exists($this, 'addItunes' . ucfirst($point))
+        ) {
+            throw new Writer\Exception\BadMethodCallException(
+                'invalid method: ' . $method
+            );
+        }
+        if (!array_key_exists($point, $this->data) || empty($this->data[$point])) {
+            return null;
+        }
+        return $this->data[$point];
+    }
+}

3rdparty/ZendFeed/Writer/Extension/ITunes/Renderer/Entry.php

@@ -0,0 +1,200 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer\Extension\ITunes\Renderer;
+
+use DOMDocument;
+use DOMElement;
+use Zend\Feed\Writer\Extension;
+
+/**
+*/
+class Entry extends Extension\AbstractRenderer
+{
+    /**
+     * Set to TRUE if a rendering method actually renders something. This
+     * is used to prevent premature appending of a XML namespace declaration
+     * until an element which requires it is actually appended.
+     *
+     * @var bool
+     */
+    protected $called = false;
+
+    /**
+     * Render entry
+     *
+     * @return void
+     */
+    public function render()
+    {
+        $this->_setAuthors($this->dom, $this->base);
+        $this->_setBlock($this->dom, $this->base);
+        $this->_setDuration($this->dom, $this->base);
+        $this->_setExplicit($this->dom, $this->base);
+        $this->_setKeywords($this->dom, $this->base);
+        $this->_setSubtitle($this->dom, $this->base);
+        $this->_setSummary($this->dom, $this->base);
+        if ($this->called) {
+            $this->_appendNamespaces();
+        }
+    }
+
+    /**
+     * Append namespaces to entry root
+     *
+     * @return void
+     */
+    protected function _appendNamespaces()
+    {
+        $this->getRootElement()->setAttribute('xmlns:itunes',
+            'http://www.itunes.com/dtds/podcast-1.0.dtd');
+    }
+
+    /**
+     * Set entry authors
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setAuthors(DOMDocument $dom, DOMElement $root)
+    {
+        $authors = $this->getDataContainer()->getItunesAuthors();
+        if (!$authors || empty($authors)) {
+            return;
+        }
+        foreach ($authors as $author) {
+            $el = $dom->createElement('itunes:author');
+            $text = $dom->createTextNode($author);
+            $el->appendChild($text);
+            $root->appendChild($el);
+            $this->called = true;
+        }
+    }
+
+    /**
+     * Set itunes block
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setBlock(DOMDocument $dom, DOMElement $root)
+    {
+        $block = $this->getDataContainer()->getItunesBlock();
+        if ($block === null) {
+            return;
+        }
+        $el = $dom->createElement('itunes:block');
+        $text = $dom->createTextNode($block);
+        $el->appendChild($text);
+        $root->appendChild($el);
+        $this->called = true;
+    }
+
+    /**
+     * Set entry duration
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setDuration(DOMDocument $dom, DOMElement $root)
+    {
+        $duration = $this->getDataContainer()->getItunesDuration();
+        if (!$duration) {
+            return;
+        }
+        $el = $dom->createElement('itunes:duration');
+        $text = $dom->createTextNode($duration);
+        $el->appendChild($text);
+        $root->appendChild($el);
+        $this->called = true;
+    }
+
+    /**
+     * Set explicit flag
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setExplicit(DOMDocument $dom, DOMElement $root)
+    {
+        $explicit = $this->getDataContainer()->getItunesExplicit();
+        if ($explicit === null) {
+            return;
+        }
+        $el = $dom->createElement('itunes:explicit');
+        $text = $dom->createTextNode($explicit);
+        $el->appendChild($text);
+        $root->appendChild($el);
+        $this->called = true;
+    }
+
+    /**
+     * Set entry keywords
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setKeywords(DOMDocument $dom, DOMElement $root)
+    {
+        $keywords = $this->getDataContainer()->getItunesKeywords();
+        if (!$keywords || empty($keywords)) {
+            return;
+        }
+        $el = $dom->createElement('itunes:keywords');
+        $text = $dom->createTextNode(implode(',', $keywords));
+        $el->appendChild($text);
+        $root->appendChild($el);
+        $this->called = true;
+    }
+
+    /**
+     * Set entry subtitle
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setSubtitle(DOMDocument $dom, DOMElement $root)
+    {
+        $subtitle = $this->getDataContainer()->getItunesSubtitle();
+        if (!$subtitle) {
+            return;
+        }
+        $el = $dom->createElement('itunes:subtitle');
+        $text = $dom->createTextNode($subtitle);
+        $el->appendChild($text);
+        $root->appendChild($el);
+        $this->called = true;
+    }
+
+    /**
+     * Set entry summary
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setSummary(DOMDocument $dom, DOMElement $root)
+    {
+        $summary = $this->getDataContainer()->getItunesSummary();
+        if (!$summary) {
+            return;
+        }
+        $el = $dom->createElement('itunes:summary');
+        $text = $dom->createTextNode($summary);
+        $el->appendChild($text);
+        $root->appendChild($el);
+        $this->called = true;
+    }
+}

3rdparty/ZendFeed/Writer/Extension/ITunes/Renderer/Feed.php

@@ -0,0 +1,304 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer\Extension\ITunes\Renderer;
+
+use DOMDocument;
+use DOMElement;
+use Zend\Feed\Writer\Extension;
+
+/**
+*/
+class Feed extends Extension\AbstractRenderer
+{
+
+    /**
+     * Set to TRUE if a rendering method actually renders something. This
+     * is used to prevent premature appending of a XML namespace declaration
+     * until an element which requires it is actually appended.
+     *
+     * @var bool
+     */
+    protected $called = false;
+
+    /**
+     * Render feed
+     *
+     * @return void
+     */
+    public function render()
+    {
+        $this->_setAuthors($this->dom, $this->base);
+        $this->_setBlock($this->dom, $this->base);
+        $this->_setCategories($this->dom, $this->base);
+        $this->_setImage($this->dom, $this->base);
+        $this->_setDuration($this->dom, $this->base);
+        $this->_setExplicit($this->dom, $this->base);
+        $this->_setKeywords($this->dom, $this->base);
+        $this->_setNewFeedUrl($this->dom, $this->base);
+        $this->_setOwners($this->dom, $this->base);
+        $this->_setSubtitle($this->dom, $this->base);
+        $this->_setSummary($this->dom, $this->base);
+        if ($this->called) {
+            $this->_appendNamespaces();
+        }
+    }
+
+    /**
+     * Append feed namespaces
+     *
+     * @return void
+     */
+    protected function _appendNamespaces()
+    {
+        $this->getRootElement()->setAttribute('xmlns:itunes',
+            'http://www.itunes.com/dtds/podcast-1.0.dtd');
+    }
+
+    /**
+     * Set feed authors
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setAuthors(DOMDocument $dom, DOMElement $root)
+    {
+        $authors = $this->getDataContainer()->getItunesAuthors();
+        if (!$authors || empty($authors)) {
+            return;
+        }
+        foreach ($authors as $author) {
+            $el = $dom->createElement('itunes:author');
+            $text = $dom->createTextNode($author);
+            $el->appendChild($text);
+            $root->appendChild($el);
+        }
+        $this->called = true;
+    }
+
+    /**
+     * Set feed itunes block
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setBlock(DOMDocument $dom, DOMElement $root)
+    {
+        $block = $this->getDataContainer()->getItunesBlock();
+        if ($block === null) {
+            return;
+        }
+        $el = $dom->createElement('itunes:block');
+        $text = $dom->createTextNode($block);
+        $el->appendChild($text);
+        $root->appendChild($el);
+        $this->called = true;
+    }
+
+    /**
+     * Set feed categories
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setCategories(DOMDocument $dom, DOMElement $root)
+    {
+        $cats = $this->getDataContainer()->getItunesCategories();
+        if (!$cats || empty($cats)) {
+            return;
+        }
+        foreach ($cats as $key => $cat) {
+            if (!is_array($cat)) {
+                $el = $dom->createElement('itunes:category');
+                $el->setAttribute('text', $cat);
+                $root->appendChild($el);
+            } else {
+                $el = $dom->createElement('itunes:category');
+                $el->setAttribute('text', $key);
+                $root->appendChild($el);
+                foreach ($cat as $subcat) {
+                    $el2 = $dom->createElement('itunes:category');
+                    $el2->setAttribute('text', $subcat);
+                    $el->appendChild($el2);
+                }
+            }
+        }
+        $this->called = true;
+    }
+
+    /**
+     * Set feed image (icon)
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setImage(DOMDocument $dom, DOMElement $root)
+    {
+        $image = $this->getDataContainer()->getItunesImage();
+        if (!$image) {
+            return;
+        }
+        $el = $dom->createElement('itunes:image');
+        $el->setAttribute('href', $image);
+        $root->appendChild($el);
+        $this->called = true;
+    }
+
+    /**
+     * Set feed cumulative duration
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setDuration(DOMDocument $dom, DOMElement $root)
+    {
+        $duration = $this->getDataContainer()->getItunesDuration();
+        if (!$duration) {
+            return;
+        }
+        $el = $dom->createElement('itunes:duration');
+        $text = $dom->createTextNode($duration);
+        $el->appendChild($text);
+        $root->appendChild($el);
+        $this->called = true;
+    }
+
+    /**
+     * Set explicit flag
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setExplicit(DOMDocument $dom, DOMElement $root)
+    {
+        $explicit = $this->getDataContainer()->getItunesExplicit();
+        if ($explicit === null) {
+            return;
+        }
+        $el = $dom->createElement('itunes:explicit');
+        $text = $dom->createTextNode($explicit);
+        $el->appendChild($text);
+        $root->appendChild($el);
+        $this->called = true;
+    }
+
+    /**
+     * Set feed keywords
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setKeywords(DOMDocument $dom, DOMElement $root)
+    {
+        $keywords = $this->getDataContainer()->getItunesKeywords();
+        if (!$keywords || empty($keywords)) {
+            return;
+        }
+        $el = $dom->createElement('itunes:keywords');
+        $text = $dom->createTextNode(implode(',', $keywords));
+        $el->appendChild($text);
+        $root->appendChild($el);
+        $this->called = true;
+    }
+
+    /**
+     * Set feed's new URL
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setNewFeedUrl(DOMDocument $dom, DOMElement $root)
+    {
+        $url = $this->getDataContainer()->getItunesNewFeedUrl();
+        if (!$url) {
+            return;
+        }
+        $el = $dom->createElement('itunes:new-feed-url');
+        $text = $dom->createTextNode($url);
+        $el->appendChild($text);
+        $root->appendChild($el);
+        $this->called = true;
+    }
+
+    /**
+     * Set feed owners
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setOwners(DOMDocument $dom, DOMElement $root)
+    {
+        $owners = $this->getDataContainer()->getItunesOwners();
+        if (!$owners || empty($owners)) {
+            return;
+        }
+        foreach ($owners as $owner) {
+            $el = $dom->createElement('itunes:owner');
+            $name = $dom->createElement('itunes:name');
+            $text = $dom->createTextNode($owner['name']);
+            $name->appendChild($text);
+            $email = $dom->createElement('itunes:email');
+            $text = $dom->createTextNode($owner['email']);
+            $email->appendChild($text);
+            $root->appendChild($el);
+            $el->appendChild($name);
+            $el->appendChild($email);
+        }
+        $this->called = true;
+    }
+
+    /**
+     * Set feed subtitle
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setSubtitle(DOMDocument $dom, DOMElement $root)
+    {
+        $subtitle = $this->getDataContainer()->getItunesSubtitle();
+        if (!$subtitle) {
+            return;
+        }
+        $el = $dom->createElement('itunes:subtitle');
+        $text = $dom->createTextNode($subtitle);
+        $el->appendChild($text);
+        $root->appendChild($el);
+        $this->called = true;
+    }
+
+    /**
+     * Set feed summary
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setSummary(DOMDocument $dom, DOMElement $root)
+    {
+        $summary = $this->getDataContainer()->getItunesSummary();
+        if (!$summary) {
+            return;
+        }
+        $el = $dom->createElement('itunes:summary');
+        $text = $dom->createTextNode($summary);
+        $el->appendChild($text);
+        $root->appendChild($el);
+        $this->called = true;
+    }
+}

3rdparty/ZendFeed/Writer/Extension/RendererInterface.php

@@ -0,0 +1,49 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer\Extension;
+
+use DOMDocument;
+use DOMElement;
+
+/**
+*/
+interface RendererInterface
+{
+    /**
+     * Set the data container
+     *
+     * @param  mixed $container
+     * @return void
+     */
+    public function setDataContainer($container);
+
+    /**
+     * Retrieve container
+     *
+     * @return mixed
+     */
+    public function getDataContainer();
+
+    /**
+     * Set DOMDocument and DOMElement on which to operate
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $base
+     * @return void
+     */
+    public function setDomDocument(DOMDocument $dom, DOMElement $base);
+
+    /**
+     * Render
+     *
+     * @return void
+     */
+    public function render();
+}

3rdparty/ZendFeed/Writer/Extension/Slash/Renderer/Entry.php

@@ -0,0 +1,75 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer\Extension\Slash\Renderer;
+
+use DOMDocument;
+use DOMElement;
+use Zend\Feed\Writer\Extension;
+
+/**
+*/
+class Entry extends Extension\AbstractRenderer
+{
+
+    /**
+     * Set to TRUE if a rendering method actually renders something. This
+     * is used to prevent premature appending of a XML namespace declaration
+     * until an element which requires it is actually appended.
+     *
+     * @var bool
+     */
+    protected $called = false;
+
+    /**
+     * Render entry
+     *
+     * @return void
+     */
+    public function render()
+    {
+        if (strtolower($this->getType()) == 'atom') {
+            return; // RSS 2.0 only
+        }
+        $this->_setCommentCount($this->dom, $this->base);
+        if ($this->called) {
+            $this->_appendNamespaces();
+        }
+    }
+
+    /**
+     * Append entry namespaces
+     *
+     * @return void
+     */
+    protected function _appendNamespaces()
+    {
+        $this->getRootElement()->setAttribute('xmlns:slash',
+            'http://purl.org/rss/1.0/modules/slash/');
+    }
+
+    /**
+     * Set entry comment count
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setCommentCount(DOMDocument $dom, DOMElement $root)
+    {
+        $count = $this->getDataContainer()->getCommentCount();
+        if (!$count) {
+            $count = 0;
+        }
+        $tcount = $this->dom->createElement('slash:comments');
+        $tcount->nodeValue = $count;
+        $root->appendChild($tcount);
+        $this->called = true;
+    }
+}

3rdparty/ZendFeed/Writer/Extension/Threading/Renderer/Entry.php

@@ -0,0 +1,129 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer\Extension\Threading\Renderer;
+
+use DOMDocument;
+use DOMElement;
+use Zend\Feed\Writer\Extension;
+
+/**
+*/
+class Entry extends Extension\AbstractRenderer
+{
+
+    /**
+     * Set to TRUE if a rendering method actually renders something. This
+     * is used to prevent premature appending of a XML namespace declaration
+     * until an element which requires it is actually appended.
+     *
+     * @var bool
+     */
+    protected $called = false;
+
+    /**
+     * Render entry
+     *
+     * @return void
+     */
+    public function render()
+    {
+        if (strtolower($this->getType()) == 'rss') {
+            return; // Atom 1.0 only
+        }
+        $this->_setCommentLink($this->dom, $this->base);
+        $this->_setCommentFeedLinks($this->dom, $this->base);
+        $this->_setCommentCount($this->dom, $this->base);
+        if ($this->called) {
+            $this->_appendNamespaces();
+        }
+    }
+
+    /**
+     * Append entry namespaces
+     *
+     * @return void
+     */
+    protected function _appendNamespaces()
+    {
+        $this->getRootElement()->setAttribute('xmlns:thr',
+            'http://purl.org/syndication/thread/1.0');
+    }
+
+    /**
+     * Set comment link
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setCommentLink(DOMDocument $dom, DOMElement $root)
+    {
+        $link = $this->getDataContainer()->getCommentLink();
+        if (!$link) {
+            return;
+        }
+        $clink = $this->dom->createElement('link');
+        $clink->setAttribute('rel', 'replies');
+        $clink->setAttribute('type', 'text/html');
+        $clink->setAttribute('href', $link);
+        $count = $this->getDataContainer()->getCommentCount();
+        if ($count !== null) {
+            $clink->setAttribute('thr:count', $count);
+        }
+        $root->appendChild($clink);
+        $this->called = true;
+    }
+
+    /**
+     * Set comment feed links
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setCommentFeedLinks(DOMDocument $dom, DOMElement $root)
+    {
+        $links = $this->getDataContainer()->getCommentFeedLinks();
+        if (!$links || empty($links)) {
+            return;
+        }
+        foreach ($links as $link) {
+            $flink = $this->dom->createElement('link');
+            $flink->setAttribute('rel', 'replies');
+            $flink->setAttribute('type', 'application/' . $link['type'] . '+xml');
+            $flink->setAttribute('href', $link['uri']);
+            $count = $this->getDataContainer()->getCommentCount();
+            if ($count !== null) {
+                $flink->setAttribute('thr:count', $count);
+            }
+            $root->appendChild($flink);
+            $this->called = true;
+        }
+    }
+
+    /**
+     * Set entry comment count
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setCommentCount(DOMDocument $dom, DOMElement $root)
+    {
+        $count = $this->getDataContainer()->getCommentCount();
+        if ($count === null) {
+            return;
+        }
+        $tcount = $this->dom->createElement('thr:total');
+        $tcount->nodeValue = $count;
+        $root->appendChild($tcount);
+        $this->called = true;
+    }
+}

3rdparty/ZendFeed/Writer/Extension/WellFormedWeb/Renderer/Entry.php

@@ -0,0 +1,80 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer\Extension\WellFormedWeb\Renderer;
+
+use DOMDocument;
+use DOMElement;
+use Zend\Feed\Writer\Extension;
+
+/**
+*/
+class Entry extends Extension\AbstractRenderer
+{
+
+    /**
+     * Set to TRUE if a rendering method actually renders something. This
+     * is used to prevent premature appending of a XML namespace declaration
+     * until an element which requires it is actually appended.
+     *
+     * @var bool
+     */
+    protected $called = false;
+
+    /**
+     * Render entry
+     *
+     * @return void
+     */
+    public function render()
+    {
+        if (strtolower($this->getType()) == 'atom') {
+            return; // RSS 2.0 only
+        }
+        $this->_setCommentFeedLinks($this->dom, $this->base);
+        if ($this->called) {
+            $this->_appendNamespaces();
+        }
+    }
+
+    /**
+     * Append entry namespaces
+     *
+     * @return void
+     */
+    protected function _appendNamespaces()
+    {
+        $this->getRootElement()->setAttribute('xmlns:wfw',
+            'http://wellformedweb.org/CommentAPI/');
+    }
+
+    /**
+     * Set entry comment feed links
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setCommentFeedLinks(DOMDocument $dom, DOMElement $root)
+    {
+        $links = $this->getDataContainer()->getCommentFeedLinks();
+        if (!$links || empty($links)) {
+            return;
+        }
+        foreach ($links as $link) {
+            if ($link['type'] == 'rss') {
+                $flink = $this->dom->createElement('wfw:commentRss');
+                $text = $dom->createTextNode($link['uri']);
+                $flink->appendChild($text);
+                $root->appendChild($flink);
+            }
+        }
+        $this->called = true;
+    }
+}

3rdparty/ZendFeed/Writer/ExtensionManager.php

@@ -0,0 +1,80 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer;
+
+/**
+ * Default implementation of ExtensionManagerInterface
+ *
+ * Decorator of ExtensionPluginManager.
+ */
+class ExtensionManager implements ExtensionManagerInterface
+{
+    protected $pluginManager;
+
+    /**
+     * Constructor
+     *
+     * Seeds the extension manager with a plugin manager; if none provided,
+     * creates an instance.
+     *
+     * @param  null|ExtensionPluginManager $pluginManager
+     */
+    public function __construct(ExtensionPluginManager $pluginManager = null)
+    {
+        if (null === $pluginManager) {
+            $pluginManager = new ExtensionPluginManager();
+        }
+        $this->pluginManager = $pluginManager;
+    }
+
+    /**
+     * Method overloading
+     *
+     * Proxy to composed ExtensionPluginManager instance.
+     *
+     * @param  string $method
+     * @param  array $args
+     * @return mixed
+     * @throws Exception\BadMethodCallException
+     */
+    public function __call($method, $args)
+    {
+        if (!method_exists($this->pluginManager, $method)) {
+            throw new Exception\BadMethodCallException(sprintf(
+                'Method by name of %s does not exist in %s',
+                $method,
+                __CLASS__
+            ));
+        }
+        return call_user_func_array(array($this->pluginManager, $method), $args);
+    }
+
+    /**
+     * Get the named extension
+     *
+     * @param  string $name
+     * @return Extension\AbstractRenderer
+     */
+    public function get($name)
+    {
+        return $this->pluginManager->get($name);
+    }
+
+    /**
+     * Do we have the named extension?
+     *
+     * @param  string $name
+     * @return bool
+     */
+    public function has($name)
+    {
+        return $this->pluginManager->has($name);
+    }
+}

3rdparty/ZendFeed/Writer/ExtensionManagerInterface.php

@@ -0,0 +1,29 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer;
+
+interface ExtensionManagerInterface
+{
+    /**
+     * Do we have the extension?
+     *
+     * @param  string $extension
+     * @return bool
+     */
+    public function has($extension);
+
+    /**
+     * Retrieve the extension
+     *
+     * @param  string $extension
+     * @return mixed
+     */
+    public function get($extension);
+}

3rdparty/ZendFeed/Writer/ExtensionPluginManager.php

@@ -0,0 +1,80 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer;
+
+use Zend\ServiceManager\AbstractPluginManager;
+
+/**
+ * Plugin manager implementation for feed writer extensions
+ *
+ * Validation checks that we have an Entry, Feed, or Extension\AbstractRenderer.
+ */
+class ExtensionPluginManager extends AbstractPluginManager
+{
+    /**
+     * Default set of extension classes
+     *
+     * @var array
+     */
+    protected $invokableClasses = array(
+        'atomrendererfeed'           => 'Zend\Feed\Writer\Extension\Atom\Renderer\Feed',
+        'contentrendererentry'       => 'Zend\Feed\Writer\Extension\Content\Renderer\Entry',
+        'dublincorerendererentry'    => 'Zend\Feed\Writer\Extension\DublinCore\Renderer\Entry',
+        'dublincorerendererfeed'     => 'Zend\Feed\Writer\Extension\DublinCore\Renderer\Feed',
+        'itunesentry'                => 'Zend\Feed\Writer\Extension\ITunes\Entry',
+        'itunesfeed'                 => 'Zend\Feed\Writer\Extension\ITunes\Feed',
+        'itunesrendererentry'        => 'Zend\Feed\Writer\Extension\ITunes\Renderer\Entry',
+        'itunesrendererfeed'         => 'Zend\Feed\Writer\Extension\ITunes\Renderer\Feed',
+        'slashrendererentry'         => 'Zend\Feed\Writer\Extension\Slash\Renderer\Entry',
+        'threadingrendererentry'     => 'Zend\Feed\Writer\Extension\Threading\Renderer\Entry',
+        'wellformedwebrendererentry' => 'Zend\Feed\Writer\Extension\WellFormedWeb\Renderer\Entry',
+    );
+
+    /**
+     * Do not share instances
+     *
+     * @var bool
+     */
+    protected $shareByDefault = false;
+
+    /**
+     * Validate the plugin
+     *
+     * Checks that the extension loaded is of a valid type.
+     *
+     * @param  mixed $plugin
+     * @return void
+     * @throws Exception\InvalidArgumentException if invalid
+     */
+    public function validatePlugin($plugin)
+    {
+        if ($plugin instanceof Extension\AbstractRenderer) {
+            // we're okay
+            return;
+        }
+
+        if ('Feed' == substr(get_class($plugin), -4)) {
+            // we're okay
+            return;
+        }
+
+        if ('Entry' == substr(get_class($plugin), -5)) {
+            // we're okay
+            return;
+        }
+
+        throw new Exception\InvalidArgumentException(sprintf(
+            'Plugin of type %s is invalid; must implement %s\Extension\RendererInterface '
+            . 'or the classname must end in "Feed" or "Entry"',
+            (is_object($plugin) ? get_class($plugin) : gettype($plugin)),
+            __NAMESPACE__
+        ));
+    }
+}

3rdparty/ZendFeed/Writer/Feed.php

@@ -0,0 +1,240 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer;
+
+use Countable;
+use Iterator;
+
+/**
+*/
+class Feed extends AbstractFeed implements Iterator, Countable
+{
+
+    /**
+     * Contains all entry objects
+     *
+     * @var array
+     */
+    protected $entries = array();
+
+    /**
+     * A pointer for the iterator to keep track of the entries array
+     *
+     * @var int
+     */
+    protected $entriesKey = 0;
+
+    /**
+     * Creates a new Zend\Feed\Writer\Entry data container for use. This is NOT
+     * added to the current feed automatically, but is necessary to create a
+     * container with some initial values preset based on the current feed data.
+     *
+     * @return \Zend\Feed\Writer\Entry
+     */
+    public function createEntry()
+    {
+        $entry = new Entry;
+        if ($this->getEncoding()) {
+            $entry->setEncoding($this->getEncoding());
+        }
+        $entry->setType($this->getType());
+        return $entry;
+    }
+
+    /**
+     * Appends a Zend\Feed\Writer\Deleted object representing a new entry tombstone
+     * to the feed data container's internal group of entries.
+     *
+     * @param Deleted $deleted
+     * @return void
+     */
+    public function addTombstone(Deleted $deleted)
+    {
+        $this->entries[] = $deleted;
+    }
+
+    /**
+     * Creates a new Zend\Feed\Writer\Deleted data container for use. This is NOT
+     * added to the current feed automatically, but is necessary to create a
+     * container with some initial values preset based on the current feed data.
+     *
+     * @return Deleted
+     */
+    public function createTombstone()
+    {
+        $deleted = new Deleted;
+        if ($this->getEncoding()) {
+            $deleted->setEncoding($this->getEncoding());
+        }
+        $deleted->setType($this->getType());
+        return $deleted;
+    }
+
+    /**
+     * Appends a Zend\Feed\Writer\Entry object representing a new entry/item
+     * the feed data container's internal group of entries.
+     *
+     * @param Entry $entry
+     * @return Feed
+     */
+    public function addEntry(Entry $entry)
+    {
+        $this->entries[] = $entry;
+        return $this;
+    }
+
+    /**
+     * Removes a specific indexed entry from the internal queue. Entries must be
+     * added to a feed container in order to be indexed.
+     *
+     * @param int $index
+     * @throws Exception\InvalidArgumentException
+     * @return Feed
+     */
+    public function removeEntry($index)
+    {
+        if (!isset($this->entries[$index])) {
+            throw new Exception\InvalidArgumentException('Undefined index: ' . $index . '. Entry does not exist.');
+        }
+        unset($this->entries[$index]);
+
+        return $this;
+    }
+
+    /**
+     * Retrieve a specific indexed entry from the internal queue. Entries must be
+     * added to a feed container in order to be indexed.
+     *
+     * @param int $index
+     * @throws Exception\InvalidArgumentException
+     */
+    public function getEntry($index = 0)
+    {
+        if (isset($this->entries[$index])) {
+            return $this->entries[$index];
+        }
+        throw new Exception\InvalidArgumentException('Undefined index: ' . $index . '. Entry does not exist.');
+    }
+
+    /**
+     * Orders all indexed entries by date, thus offering date ordered readable
+     * content where a parser (or Homo Sapien) ignores the generic rule that
+     * XML element order is irrelevant and has no intrinsic meaning.
+     *
+     * Using this method will alter the original indexation.
+     *
+     * @return Feed
+     */
+    public function orderByDate()
+    {
+        /**
+         * Could do with some improvement for performance perhaps
+         */
+        $timestamp = time();
+        $entries = array();
+        foreach ($this->entries as $entry) {
+            if ($entry->getDateModified()) {
+                $timestamp = (int) $entry->getDateModified()->getTimestamp();
+            } elseif ($entry->getDateCreated()) {
+                $timestamp = (int) $entry->getDateCreated()->getTimestamp();
+            }
+            $entries[$timestamp] = $entry;
+        }
+        krsort($entries, SORT_NUMERIC);
+        $this->entries = array_values($entries);
+
+        return $this;
+    }
+
+    /**
+     * Get the number of feed entries.
+     * Required by the Iterator interface.
+     *
+     * @return int
+     */
+    public function count()
+    {
+        return count($this->entries);
+    }
+
+    /**
+     * Return the current entry
+     *
+     * @return Entry
+     */
+    public function current()
+    {
+        return $this->entries[$this->key()];
+    }
+
+    /**
+     * Return the current feed key
+     *
+     * @return mixed
+     */
+    public function key()
+    {
+        return $this->entriesKey;
+    }
+
+    /**
+     * Move the feed pointer forward
+     *
+     * @return void
+     */
+    public function next()
+    {
+        ++$this->entriesKey;
+    }
+
+    /**
+     * Reset the pointer in the feed object
+     *
+     * @return void
+     */
+    public function rewind()
+    {
+        $this->entriesKey = 0;
+    }
+
+    /**
+     * Check to see if the iterator is still valid
+     *
+     * @return bool
+     */
+    public function valid()
+    {
+        return 0 <= $this->entriesKey && $this->entriesKey < $this->count();
+    }
+
+    /**
+     * Attempt to build and return the feed resulting from the data set
+     *
+     * @param  string  $type The feed type "rss" or "atom" to export as
+     * @param  bool    $ignoreExceptions
+     * @throws Exception\InvalidArgumentException
+     * @return string
+     */
+    public function export($type, $ignoreExceptions = false)
+    {
+        $this->setType(strtolower($type));
+        $type = ucfirst($this->getType());
+        if ($type !== 'Rss' && $type !== 'Atom') {
+            throw new Exception\InvalidArgumentException('Invalid feed type specified: ' . $type . '.'
+            . ' Should be one of "rss" or "atom".');
+        }
+        $renderClass = 'Zend\\Feed\\Writer\\Renderer\\Feed\\' . $type;
+        $renderer = new $renderClass($this);
+        if ($ignoreExceptions) {
+            $renderer->ignoreExceptions();
+        }
+        return $renderer->render()->saveXml();
+    }
+}

3rdparty/ZendFeed/Writer/FeedFactory.php

@@ -0,0 +1,127 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer;
+
+use Traversable;
+
+abstract class FeedFactory
+{
+    /**
+     * Create and return a Feed based on data provided.
+     *
+     * @param  array|Traversable $data
+     * @throws Exception\InvalidArgumentException
+     * @return Feed
+     */
+    public static function factory($data)
+    {
+        if (!is_array($data) && !$data instanceof Traversable) {
+            throw new Exception\InvalidArgumentException(sprintf(
+                '%s expects an array or Traversable argument; received "%s"',
+                __METHOD__,
+                (is_object($data) ? get_class($data) : gettype($data))
+            ));
+        }
+
+        $feed = new Feed();
+
+        foreach ($data as $key => $value) {
+            // Setters
+            $key    = static::convertKey($key);
+            $method = 'set' . $key;
+            if (method_exists($feed, $method)) {
+                switch ($method) {
+                    case 'setfeedlink':
+                        if (!is_array($value)) {
+                            // Need an array
+                            break;
+                        }
+                        if (!array_key_exists('link', $value) || !array_key_exists('type', $value)) {
+                            // Need both keys to set this correctly
+                            break;
+                        }
+                        $feed->setFeedLink($value['link'], $value['type']);
+                        break;
+                    default:
+                        $feed->$method($value);
+                        break;
+                }
+                continue;
+            }
+
+            // Entries
+            if ('entries' == $key) {
+                static::createEntries($value, $feed);
+                continue;
+            }
+        }
+
+        return $feed;
+    }
+
+    /**
+     * Normalize a key
+     *
+     * @param  string $key
+     * @return string
+     */
+    protected static function convertKey($key)
+    {
+        $key = str_replace('_', '', strtolower($key));
+        return $key;
+    }
+
+    /**
+     * Create and attach entries to a feed
+     *
+     * @param  array|Traversable $entries
+     * @param  Feed $feed
+     * @throws Exception\InvalidArgumentException
+     * @return void
+     */
+    protected static function createEntries($entries, Feed $feed)
+    {
+        if (!is_array($entries) && !$entries instanceof Traversable) {
+            throw new Exception\InvalidArgumentException(sprintf(
+                '%s::factory expects the "entries" value to be an array or Traversable; received "%s"',
+                get_called_class(),
+                (is_object($entries) ? get_class($entries) : gettype($entries))
+            ));
+        }
+
+        foreach ($entries as $data) {
+            if (!is_array($data) && !$data instanceof Traversable && !$data instanceof Entry) {
+                throw new Exception\InvalidArgumentException(sprintf(
+                    '%s expects an array, Traversable, or Zend\Feed\Writer\Entry argument; received "%s"',
+                    __METHOD__,
+                    (is_object($data) ? get_class($data) : gettype($data))
+                ));
+            }
+
+            // Use case 1: Entry item
+            if ($data instanceof Entry) {
+                $feed->addEntry($data);
+                continue;
+            }
+
+            // Use case 2: iterate item and populate entry
+            $entry = $feed->createEntry();
+            foreach ($data as $key => $value) {
+                $key    = static::convertKey($key);
+                $method = 'set' . $key;
+                if (!method_exists($entry, $method)) {
+                    continue;
+                }
+                $entry->$method($value);
+            }
+            $feed->addEntry($entry);
+        }
+    }
+}

3rdparty/ZendFeed/Writer/Renderer/AbstractRenderer.php

@@ -0,0 +1,233 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer\Renderer;
+
+use DOMDocument;
+use DOMElement;
+use Zend\Feed\Writer;
+
+/**
+*/
+class AbstractRenderer
+{
+    /**
+     * Extensions
+     * @var array
+     */
+    protected $extensions = array();
+
+    /**
+     * @var Writer\AbstractFeed
+     */
+    protected $container = null;
+
+    /**
+     * @var DOMDocument
+     */
+    protected $dom = null;
+
+    /**
+     * @var bool
+     */
+    protected $ignoreExceptions = false;
+
+    /**
+     * @var array
+     */
+    protected $exceptions = array();
+
+    /**
+     * Encoding of all text values
+     *
+     * @var string
+     */
+    protected $encoding = 'UTF-8';
+
+    /**
+     * Holds the value "atom" or "rss" depending on the feed type set when
+     * when last exported.
+     *
+     * @var string
+     */
+    protected $type = null;
+
+    /**
+     * @var DOMElement
+     */
+    protected $rootElement = null;
+
+    /**
+     * Constructor
+     *
+     * @param Writer\AbstractFeed $container
+     */
+    public function __construct($container)
+    {
+        $this->container = $container;
+        $this->setType($container->getType());
+        $this->_loadExtensions();
+    }
+
+    /**
+     * Save XML to string
+     *
+     * @return string
+     */
+    public function saveXml()
+    {
+        return $this->getDomDocument()->saveXml();
+    }
+
+    /**
+     * Get DOM document
+     *
+     * @return DOMDocument
+     */
+    public function getDomDocument()
+    {
+        return $this->dom;
+    }
+
+    /**
+     * Get document element from DOM
+     *
+     * @return DOMElement
+     */
+    public function getElement()
+    {
+        return $this->getDomDocument()->documentElement;
+    }
+
+    /**
+     * Get data container of items being rendered
+     *
+     * @return Writer\AbstractFeed
+     */
+    public function getDataContainer()
+    {
+        return $this->container;
+    }
+
+    /**
+     * Set feed encoding
+     *
+     * @param  string $enc
+     * @return AbstractRenderer
+     */
+    public function setEncoding($enc)
+    {
+        $this->encoding = $enc;
+        return $this;
+    }
+
+    /**
+     * Get feed encoding
+     *
+     * @return string
+     */
+    public function getEncoding()
+    {
+        return $this->encoding;
+    }
+
+    /**
+     * Indicate whether or not to ignore exceptions
+     *
+     * @param  bool $bool
+     * @return AbstractRenderer
+     * @throws Writer\Exception\InvalidArgumentException
+     */
+    public function ignoreExceptions($bool = true)
+    {
+        if (!is_bool($bool)) {
+            throw new Writer\Exception\InvalidArgumentException('Invalid parameter: $bool. Should be TRUE or FALSE (defaults to TRUE if null)');
+        }
+        $this->ignoreExceptions = $bool;
+        return $this;
+    }
+
+    /**
+     * Get exception list
+     *
+     * @return array
+     */
+    public function getExceptions()
+    {
+        return $this->exceptions;
+    }
+
+    /**
+     * Set the current feed type being exported to "rss" or "atom". This allows
+     * other objects to gracefully choose whether to execute or not, depending
+     * on their appropriateness for the current type, e.g. renderers.
+     *
+     * @param string $type
+     */
+    public function setType($type)
+    {
+        $this->type = $type;
+    }
+
+    /**
+     * Retrieve the current or last feed type exported.
+     *
+     * @return string Value will be "rss" or "atom"
+     */
+    public function getType()
+    {
+        return $this->type;
+    }
+
+    /**
+     * Sets the absolute root element for the XML feed being generated. This
+     * helps simplify the appending of namespace declarations, but also ensures
+     * namespaces are added to the root element - not scattered across the entire
+     * XML file - may assist namespace unsafe parsers and looks pretty ;).
+     *
+     * @param DOMElement $root
+     */
+    public function setRootElement(DOMElement $root)
+    {
+        $this->rootElement = $root;
+    }
+
+    /**
+     * Retrieve the absolute root element for the XML feed being generated.
+     *
+     * @return DOMElement
+     */
+    public function getRootElement()
+    {
+        return $this->rootElement;
+    }
+
+    /**
+     * Load extensions from Zend\Feed\Writer\Writer
+     *
+     * @return void
+     */
+    protected function _loadExtensions()
+    {
+        Writer\Writer::registerCoreExtensions();
+        $manager = Writer\Writer::getExtensionManager();
+        $all = Writer\Writer::getExtensions();
+        if (stripos(get_class($this), 'entry')) {
+            $exts = $all['entryRenderer'];
+        } else {
+            $exts = $all['feedRenderer'];
+        }
+        foreach ($exts as $extension) {
+            $plugin = $manager->get($extension);
+            $plugin->setDataContainer($this->getDataContainer());
+            $plugin->setEncoding($this->getEncoding());
+            $this->extensions[$extension] = $plugin;
+        }
+    }
+}

3rdparty/ZendFeed/Writer/Renderer/Entry/Atom.php

@@ -0,0 +1,425 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer\Renderer\Entry;
+
+use DateTime;
+use DOMDocument;
+use DOMElement;
+use Zend\Feed\Uri;
+use Zend\Feed\Writer;
+use Zend\Feed\Writer\Renderer;
+use Zend\Validator;
+
+class Atom extends Renderer\AbstractRenderer implements Renderer\RendererInterface
+{
+    /**
+     * Constructor
+     *
+     * @param  Writer\Entry $container
+     */
+    public function __construct(Writer\Entry $container)
+    {
+        parent::__construct($container);
+    }
+
+    /**
+     * Render atom entry
+     *
+     * @return Atom
+     */
+    public function render()
+    {
+        $this->dom = new DOMDocument('1.0', $this->container->getEncoding());
+        $this->dom->formatOutput = true;
+        $entry = $this->dom->createElementNS(Writer\Writer::NAMESPACE_ATOM_10, 'entry');
+        $this->dom->appendChild($entry);
+
+        $this->_setSource($this->dom, $entry);
+        $this->_setTitle($this->dom, $entry);
+        $this->_setDescription($this->dom, $entry);
+        $this->_setDateCreated($this->dom, $entry);
+        $this->_setDateModified($this->dom, $entry);
+        $this->_setLink($this->dom, $entry);
+        $this->_setId($this->dom, $entry);
+        $this->_setAuthors($this->dom, $entry);
+        $this->_setEnclosure($this->dom, $entry);
+        $this->_setContent($this->dom, $entry);
+        $this->_setCategories($this->dom, $entry);
+
+        foreach ($this->extensions as $ext) {
+            $ext->setType($this->getType());
+            $ext->setRootElement($this->getRootElement());
+            $ext->setDOMDocument($this->getDOMDocument(), $entry);
+            $ext->render();
+        }
+
+        return $this;
+    }
+
+    /**
+     * Set entry title
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     * @throws Writer\Exception\InvalidArgumentException
+     */
+    protected function _setTitle(DOMDocument $dom, DOMElement $root)
+    {
+        if (!$this->getDataContainer()->getTitle()) {
+            $message = 'Atom 1.0 entry elements MUST contain exactly one'
+            . ' atom:title element but a title has not been set';
+            $exception = new Writer\Exception\InvalidArgumentException($message);
+            if (!$this->ignoreExceptions) {
+                throw $exception;
+            } else {
+                $this->exceptions[] = $exception;
+                return;
+            }
+        }
+        $title = $dom->createElement('title');
+        $root->appendChild($title);
+        $title->setAttribute('type', 'html');
+        $cdata = $dom->createCDATASection($this->getDataContainer()->getTitle());
+        $title->appendChild($cdata);
+    }
+
+    /**
+     * Set entry description
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setDescription(DOMDocument $dom, DOMElement $root)
+    {
+        if (!$this->getDataContainer()->getDescription()) {
+            return; // unless src content or base64
+        }
+        $subtitle = $dom->createElement('summary');
+        $root->appendChild($subtitle);
+        $subtitle->setAttribute('type', 'html');
+        $cdata = $dom->createCDATASection(
+            $this->getDataContainer()->getDescription()
+        );
+        $subtitle->appendChild($cdata);
+    }
+
+    /**
+     * Set date entry was modified
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     * @throws Writer\Exception\InvalidArgumentException
+     */
+    protected function _setDateModified(DOMDocument $dom, DOMElement $root)
+    {
+        if (!$this->getDataContainer()->getDateModified()) {
+            $message = 'Atom 1.0 entry elements MUST contain exactly one'
+            . ' atom:updated element but a modification date has not been set';
+            $exception = new Writer\Exception\InvalidArgumentException($message);
+            if (!$this->ignoreExceptions) {
+                throw $exception;
+            } else {
+                $this->exceptions[] = $exception;
+                return;
+            }
+        }
+
+        $updated = $dom->createElement('updated');
+        $root->appendChild($updated);
+        $text = $dom->createTextNode(
+            $this->getDataContainer()->getDateModified()->format(DateTime::ISO8601)
+        );
+        $updated->appendChild($text);
+    }
+
+    /**
+     * Set date entry was created
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setDateCreated(DOMDocument $dom, DOMElement $root)
+    {
+        if (!$this->getDataContainer()->getDateCreated()) {
+            return;
+        }
+        $el = $dom->createElement('published');
+        $root->appendChild($el);
+        $text = $dom->createTextNode(
+            $this->getDataContainer()->getDateCreated()->format(DateTime::ISO8601)
+        );
+        $el->appendChild($text);
+    }
+
+    /**
+     * Set entry authors
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setAuthors(DOMDocument $dom, DOMElement $root)
+    {
+        $authors = $this->container->getAuthors();
+        if ((!$authors || empty($authors))) {
+            /**
+             * This will actually trigger an Exception at the feed level if
+             * a feed level author is not set.
+             */
+            return;
+        }
+        foreach ($authors as $data) {
+            $author = $this->dom->createElement('author');
+            $name = $this->dom->createElement('name');
+            $author->appendChild($name);
+            $root->appendChild($author);
+            $text = $dom->createTextNode($data['name']);
+            $name->appendChild($text);
+            if (array_key_exists('email', $data)) {
+                $email = $this->dom->createElement('email');
+                $author->appendChild($email);
+                $text = $dom->createTextNode($data['email']);
+                $email->appendChild($text);
+            }
+            if (array_key_exists('uri', $data)) {
+                $uri = $this->dom->createElement('uri');
+                $author->appendChild($uri);
+                $text = $dom->createTextNode($data['uri']);
+                $uri->appendChild($text);
+            }
+        }
+    }
+
+    /**
+     * Set entry enclosure
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setEnclosure(DOMDocument $dom, DOMElement $root)
+    {
+        $data = $this->container->getEnclosure();
+        if ((!$data || empty($data))) {
+            return;
+        }
+        $enclosure = $this->dom->createElement('link');
+        $enclosure->setAttribute('rel', 'enclosure');
+        if (isset($data['type'])) {
+            $enclosure->setAttribute('type', $data['type']);
+        }
+        if (isset($data['length'])) {
+            $enclosure->setAttribute('length', $data['length']);
+        }
+        $enclosure->setAttribute('href', $data['uri']);
+        $root->appendChild($enclosure);
+    }
+
+    protected function _setLink(DOMDocument $dom, DOMElement $root)
+    {
+        if (!$this->getDataContainer()->getLink()) {
+            return;
+        }
+        $link = $dom->createElement('link');
+        $root->appendChild($link);
+        $link->setAttribute('rel', 'alternate');
+        $link->setAttribute('type', 'text/html');
+        $link->setAttribute('href', $this->getDataContainer()->getLink());
+    }
+
+    /**
+     * Set entry identifier
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     * @throws Writer\Exception\InvalidArgumentException
+     */
+    protected function _setId(DOMDocument $dom, DOMElement $root)
+    {
+        if (!$this->getDataContainer()->getId()
+        && !$this->getDataContainer()->getLink()) {
+            $message = 'Atom 1.0 entry elements MUST contain exactly one '
+            . 'atom:id element, or as an alternative, we can use the same '
+            . 'value as atom:link however neither a suitable link nor an '
+            . 'id have been set';
+            $exception = new Writer\Exception\InvalidArgumentException($message);
+            if (!$this->ignoreExceptions) {
+                throw $exception;
+            } else {
+                $this->exceptions[] = $exception;
+                return;
+            }
+        }
+
+        if (!$this->getDataContainer()->getId()) {
+            $this->getDataContainer()->setId(
+                $this->getDataContainer()->getLink());
+        }
+        if (!Uri::factory($this->getDataContainer()->getId())->isValid()
+            && !preg_match(
+                "#^urn:[a-zA-Z0-9][a-zA-Z0-9\-]{1,31}:([a-zA-Z0-9\(\)\+\,\.\:\=\@\;\$\_\!\*\-]|%[0-9a-fA-F]{2})*#",
+                $this->getDataContainer()->getId())
+            && !$this->_validateTagUri($this->getDataContainer()->getId())
+        ) {
+            throw new Writer\Exception\InvalidArgumentException('Atom 1.0 IDs must be a valid URI/IRI');
+        }
+        $id = $dom->createElement('id');
+        $root->appendChild($id);
+        $text = $dom->createTextNode($this->getDataContainer()->getId());
+        $id->appendChild($text);
+    }
+
+    /**
+     * Validate a URI using the tag scheme (RFC 4151)
+     *
+     * @param string $id
+     * @return bool
+     */
+    protected function _validateTagUri($id)
+    {
+        if (preg_match('/^tag:(?P<name>.*),(?P<date>\d{4}-?\d{0,2}-?\d{0,2}):(?P<specific>.*)(.*:)*$/', $id, $matches)) {
+            $dvalid = false;
+            $date = $matches['date'];
+            $d6 = strtotime($date);
+            if ((strlen($date) == 4) && $date <= date('Y')) {
+                $dvalid = true;
+            } elseif ((strlen($date) == 7) && ($d6 < strtotime("now"))) {
+                $dvalid = true;
+            } elseif ((strlen($date) == 10) && ($d6 < strtotime("now"))) {
+                $dvalid = true;
+            }
+            $validator = new Validator\EmailAddress;
+            if ($validator->isValid($matches['name'])) {
+                $nvalid = true;
+            } else {
+                $nvalid = $validator->isValid('info@' . $matches['name']);
+            }
+            return $dvalid && $nvalid;
+
+        }
+        return false;
+    }
+
+    /**
+     * Set entry content
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     * @throws Writer\Exception\InvalidArgumentException
+     */
+    protected function _setContent(DOMDocument $dom, DOMElement $root)
+    {
+        $content = $this->getDataContainer()->getContent();
+        if (!$content && !$this->getDataContainer()->getLink()) {
+            $message = 'Atom 1.0 entry elements MUST contain exactly one '
+            . 'atom:content element, or as an alternative, at least one link '
+            . 'with a rel attribute of "alternate" to indicate an alternate '
+            . 'method to consume the content.';
+            $exception = new Writer\Exception\InvalidArgumentException($message);
+            if (!$this->ignoreExceptions) {
+                throw $exception;
+            } else {
+                $this->exceptions[] = $exception;
+                return;
+            }
+        }
+        if (!$content) {
+            return;
+        }
+        $element = $dom->createElement('content');
+        $element->setAttribute('type', 'xhtml');
+        $xhtmlElement = $this->_loadXhtml($content);
+        $xhtml = $dom->importNode($xhtmlElement, true);
+        $element->appendChild($xhtml);
+        $root->appendChild($element);
+    }
+
+    /**
+     * Load a HTML string and attempt to normalise to XML
+     */
+    protected function _loadXhtml($content)
+    {
+        if (class_exists('tidy', false)) {
+            $tidy = new \tidy;
+            $config = array(
+                'output-xhtml' => true,
+                'show-body-only' => true,
+                'quote-nbsp' => false
+            );
+            $encoding = str_replace('-', '', $this->getEncoding());
+            $tidy->parseString($content, $config, $encoding);
+            $tidy->cleanRepair();
+            $xhtml = (string) $tidy;
+        } else {
+            $xhtml = $content;
+        }
+        $xhtml = preg_replace(array(
+            "/(<[\/]?)([a-zA-Z]+)/"
+        ), '$1xhtml:$2', $xhtml);
+        $dom = new DOMDocument('1.0', $this->getEncoding());
+        $dom->loadXML('<xhtml:div xmlns:xhtml="http://www.w3.org/1999/xhtml">'
+            . $xhtml . '</xhtml:div>');
+        return $dom->documentElement;
+    }
+
+    /**
+     * Set entry categories
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setCategories(DOMDocument $dom, DOMElement $root)
+    {
+        $categories = $this->getDataContainer()->getCategories();
+        if (!$categories) {
+            return;
+        }
+        foreach ($categories as $cat) {
+            $category = $dom->createElement('category');
+            $category->setAttribute('term', $cat['term']);
+            if (isset($cat['label'])) {
+                $category->setAttribute('label', $cat['label']);
+            } else {
+                $category->setAttribute('label', $cat['term']);
+            }
+            if (isset($cat['scheme'])) {
+                $category->setAttribute('scheme', $cat['scheme']);
+            }
+            $root->appendChild($category);
+        }
+    }
+
+    /**
+     * Append Source element (Atom 1.0 Feed Metadata)
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setSource(DOMDocument $dom, DOMElement $root)
+    {
+        $source = $this->getDataContainer()->getSource();
+        if (!$source) {
+            return;
+        }
+        $renderer = new Renderer\Feed\AtomSource($source);
+        $renderer->setType($this->getType());
+        $element = $renderer->render()->getElement();
+        $imported = $dom->importNode($element, true);
+        $root->appendChild($imported);
+    }
+}

3rdparty/ZendFeed/Writer/Renderer/Entry/Atom/Deleted.php

@@ -0,0 +1,102 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer\Renderer\Entry\Atom;
+
+use DateTime;
+use DOMDocument;
+use DOMElement;
+use Zend\Feed\Writer;
+use Zend\Feed\Writer\Renderer;
+
+class Deleted extends Renderer\AbstractRenderer implements Renderer\RendererInterface
+{
+    /**
+     * Constructor
+     *
+     * @param  Writer\Deleted $container
+     */
+    public function __construct(Writer\Deleted $container)
+    {
+        parent::__construct($container);
+    }
+
+    /**
+     * Render atom entry
+     *
+     * @return Writer\Renderer\Entry\Atom
+     */
+    public function render()
+    {
+        $this->dom = new DOMDocument('1.0', $this->container->getEncoding());
+        $this->dom->formatOutput = true;
+        $entry = $this->dom->createElement('at:deleted-entry');
+        $this->dom->appendChild($entry);
+
+        $entry->setAttribute('ref', $this->container->getReference());
+        $entry->setAttribute('when', $this->container->getWhen()->format(DateTime::ISO8601));
+
+        $this->_setBy($this->dom, $entry);
+        $this->_setComment($this->dom, $entry);
+
+        return $this;
+    }
+
+    /**
+     * Set tombstone comment
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setComment(DOMDocument $dom, DOMElement $root)
+    {
+        if (!$this->getDataContainer()->getComment()) {
+            return;
+        }
+        $c = $dom->createElement('at:comment');
+        $root->appendChild($c);
+        $c->setAttribute('type', 'html');
+        $cdata = $dom->createCDATASection($this->getDataContainer()->getComment());
+        $c->appendChild($cdata);
+    }
+
+    /**
+     * Set entry authors
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setBy(DOMDocument $dom, DOMElement $root)
+    {
+        $data = $this->container->getBy();
+        if ((!$data || empty($data))) {
+            return;
+        }
+        $author = $this->dom->createElement('at:by');
+        $name = $this->dom->createElement('name');
+        $author->appendChild($name);
+        $root->appendChild($author);
+        $text = $dom->createTextNode($data['name']);
+        $name->appendChild($text);
+        if (array_key_exists('email', $data)) {
+            $email = $this->dom->createElement('email');
+            $author->appendChild($email);
+            $text = $dom->createTextNode($data['email']);
+            $email->appendChild($text);
+        }
+        if (array_key_exists('uri', $data)) {
+            $uri = $this->dom->createElement('uri');
+            $author->appendChild($uri);
+            $text = $dom->createTextNode($data['uri']);
+            $uri->appendChild($text);
+        }
+    }
+}

3rdparty/ZendFeed/Writer/Renderer/Entry/AtomDeleted.php

@@ -0,0 +1,104 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer\Renderer\Entry;
+
+use DateTime;
+use DOMDocument;
+use DOMElement;
+use Zend\Feed\Writer;
+use Zend\Feed\Writer\Renderer;
+
+/**
+*/
+class AtomDeleted extends Renderer\AbstractRenderer implements Renderer\RendererInterface
+{
+    /**
+     * Constructor
+     *
+     * @param  Writer\Deleted $container
+     */
+    public function __construct(Writer\Deleted $container)
+    {
+        parent::__construct($container);
+    }
+
+    /**
+     * Render atom entry
+     *
+     * @return \Zend\Feed\Writer\Renderer\Entry\Atom
+     */
+    public function render()
+    {
+        $this->dom = new DOMDocument('1.0', $this->container->getEncoding());
+        $this->dom->formatOutput = true;
+        $entry = $this->dom->createElement('at:deleted-entry');
+        $this->dom->appendChild($entry);
+
+        $entry->setAttribute('ref', $this->container->getReference());
+        $entry->setAttribute('when', $this->container->getWhen()->format(DateTime::ISO8601));
+
+        $this->_setBy($this->dom, $entry);
+        $this->_setComment($this->dom, $entry);
+
+        return $this;
+    }
+
+    /**
+     * Set tombstone comment
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setComment(DOMDocument $dom, DOMElement $root)
+    {
+        if (!$this->getDataContainer()->getComment()) {
+            return;
+        }
+        $c = $dom->createElement('at:comment');
+        $root->appendChild($c);
+        $c->setAttribute('type', 'html');
+        $cdata = $dom->createCDATASection($this->getDataContainer()->getComment());
+        $c->appendChild($cdata);
+    }
+
+    /**
+     * Set entry authors
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setBy(DOMDocument $dom, DOMElement $root)
+    {
+        $data = $this->container->getBy();
+        if ((!$data || empty($data))) {
+            return;
+        }
+        $author = $this->dom->createElement('at:by');
+        $name = $this->dom->createElement('name');
+        $author->appendChild($name);
+        $root->appendChild($author);
+        $text = $dom->createTextNode($data['name']);
+        $name->appendChild($text);
+        if (array_key_exists('email', $data)) {
+            $email = $this->dom->createElement('email');
+            $author->appendChild($email);
+            $text = $dom->createTextNode($data['email']);
+            $email->appendChild($text);
+        }
+        if (array_key_exists('uri', $data)) {
+            $uri = $this->dom->createElement('uri');
+            $author->appendChild($uri);
+            $text = $dom->createTextNode($data['uri']);
+            $uri->appendChild($text);
+        }
+    }
+}

3rdparty/ZendFeed/Writer/Renderer/Entry/Rss.php

@@ -0,0 +1,329 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer\Renderer\Entry;
+
+use DateTime;
+use DOMDocument;
+use DOMElement;
+use Zend\Feed\Uri;
+use Zend\Feed\Writer;
+use Zend\Feed\Writer\Renderer;
+
+/**
+*/
+class Rss extends Renderer\AbstractRenderer implements Renderer\RendererInterface
+{
+    /**
+     * Constructor
+     *
+     * @param  Writer\Entry $container
+     */
+    public function __construct(Writer\Entry $container)
+    {
+        parent::__construct($container);
+    }
+
+    /**
+     * Render RSS entry
+     *
+     * @return Rss
+     */
+    public function render()
+    {
+        $this->dom = new DOMDocument('1.0', $this->container->getEncoding());
+        $this->dom->formatOutput = true;
+        $this->dom->substituteEntities = false;
+        $entry = $this->dom->createElement('item');
+        $this->dom->appendChild($entry);
+
+        $this->_setTitle($this->dom, $entry);
+        $this->_setDescription($this->dom, $entry);
+        $this->_setDateCreated($this->dom, $entry);
+        $this->_setDateModified($this->dom, $entry);
+        $this->_setLink($this->dom, $entry);
+        $this->_setId($this->dom, $entry);
+        $this->_setAuthors($this->dom, $entry);
+        $this->_setEnclosure($this->dom, $entry);
+        $this->_setCommentLink($this->dom, $entry);
+        $this->_setCategories($this->dom, $entry);
+        foreach ($this->extensions as $ext) {
+            $ext->setType($this->getType());
+            $ext->setRootElement($this->getRootElement());
+            $ext->setDOMDocument($this->getDOMDocument(), $entry);
+            $ext->render();
+        }
+
+        return $this;
+    }
+
+    /**
+     * Set entry title
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     * @throws Writer\Exception\InvalidArgumentException
+     */
+    protected function _setTitle(DOMDocument $dom, DOMElement $root)
+    {
+        if (!$this->getDataContainer()->getDescription()
+        && !$this->getDataContainer()->getTitle()) {
+            $message = 'RSS 2.0 entry elements SHOULD contain exactly one'
+            . ' title element but a title has not been set. In addition, there'
+            . ' is no description as required in the absence of a title.';
+            $exception = new Writer\Exception\InvalidArgumentException($message);
+            if (!$this->ignoreExceptions) {
+                throw $exception;
+            } else {
+                $this->exceptions[] = $exception;
+                return;
+            }
+        }
+        $title = $dom->createElement('title');
+        $root->appendChild($title);
+        $text = $dom->createTextNode($this->getDataContainer()->getTitle());
+        $title->appendChild($text);
+    }
+
+    /**
+     * Set entry description
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     * @throws Writer\Exception\InvalidArgumentException
+     */
+    protected function _setDescription(DOMDocument $dom, DOMElement $root)
+    {
+        if (!$this->getDataContainer()->getDescription()
+        && !$this->getDataContainer()->getTitle()) {
+            $message = 'RSS 2.0 entry elements SHOULD contain exactly one'
+            . ' description element but a description has not been set. In'
+            . ' addition, there is no title element as required in the absence'
+            . ' of a description.';
+            $exception = new Writer\Exception\InvalidArgumentException($message);
+            if (!$this->ignoreExceptions) {
+                throw $exception;
+            } else {
+                $this->exceptions[] = $exception;
+                return;
+            }
+        }
+        if (!$this->getDataContainer()->getDescription()) {
+            return;
+        }
+        $subtitle = $dom->createElement('description');
+        $root->appendChild($subtitle);
+        $text = $dom->createCDATASection($this->getDataContainer()->getDescription());
+        $subtitle->appendChild($text);
+    }
+
+    /**
+     * Set date entry was last modified
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setDateModified(DOMDocument $dom, DOMElement $root)
+    {
+        if (!$this->getDataContainer()->getDateModified()) {
+            return;
+        }
+
+        $updated = $dom->createElement('pubDate');
+        $root->appendChild($updated);
+        $text = $dom->createTextNode(
+            $this->getDataContainer()->getDateModified()->format(DateTime::RSS)
+        );
+        $updated->appendChild($text);
+    }
+
+    /**
+     * Set date entry was created
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setDateCreated(DOMDocument $dom, DOMElement $root)
+    {
+        if (!$this->getDataContainer()->getDateCreated()) {
+            return;
+        }
+        if (!$this->getDataContainer()->getDateModified()) {
+            $this->getDataContainer()->setDateModified(
+                $this->getDataContainer()->getDateCreated()
+            );
+        }
+    }
+
+    /**
+     * Set entry authors
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setAuthors(DOMDocument $dom, DOMElement $root)
+    {
+        $authors = $this->container->getAuthors();
+        if ((!$authors || empty($authors))) {
+            return;
+        }
+        foreach ($authors as $data) {
+            $author = $this->dom->createElement('author');
+            $name = $data['name'];
+            if (array_key_exists('email', $data)) {
+                $name = $data['email'] . ' (' . $data['name'] . ')';
+            }
+            $text = $dom->createTextNode($name);
+            $author->appendChild($text);
+            $root->appendChild($author);
+        }
+    }
+
+    /**
+     * Set entry enclosure
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     * @throws Writer\Exception\InvalidArgumentException
+     */
+    protected function _setEnclosure(DOMDocument $dom, DOMElement $root)
+    {
+        $data = $this->container->getEnclosure();
+        if ((!$data || empty($data))) {
+            return;
+        }
+        if (!isset($data['type'])) {
+            $exception = new Writer\Exception\InvalidArgumentException('Enclosure "type" is not set');
+            if (!$this->ignoreExceptions) {
+                throw $exception;
+            } else {
+                $this->exceptions[] = $exception;
+                return;
+            }
+        }
+        if (!isset($data['length'])) {
+            $exception = new Writer\Exception\InvalidArgumentException('Enclosure "length" is not set');
+            if (!$this->ignoreExceptions) {
+                throw $exception;
+            } else {
+                $this->exceptions[] = $exception;
+                return;
+            }
+        }
+        if (isset($data['length']) && (int) $data['length'] <= 0) {
+            $exception = new Writer\Exception\InvalidArgumentException('Enclosure "length" must be an integer'
+            . ' indicating the content\'s length in bytes');
+            if (!$this->ignoreExceptions) {
+                throw $exception;
+            } else {
+                $this->exceptions[] = $exception;
+                return;
+            }
+        }
+        $enclosure = $this->dom->createElement('enclosure');
+        $enclosure->setAttribute('type', $data['type']);
+        $enclosure->setAttribute('length', $data['length']);
+        $enclosure->setAttribute('url', $data['uri']);
+        $root->appendChild($enclosure);
+    }
+
+    /**
+     * Set link to entry
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setLink(DOMDocument $dom, DOMElement $root)
+    {
+        if (!$this->getDataContainer()->getLink()) {
+            return;
+        }
+        $link = $dom->createElement('link');
+        $root->appendChild($link);
+        $text = $dom->createTextNode($this->getDataContainer()->getLink());
+        $link->appendChild($text);
+    }
+
+    /**
+     * Set entry identifier
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setId(DOMDocument $dom, DOMElement $root)
+    {
+        if (!$this->getDataContainer()->getId()
+        && !$this->getDataContainer()->getLink()) {
+            return;
+        }
+
+        $id = $dom->createElement('guid');
+        $root->appendChild($id);
+        if (!$this->getDataContainer()->getId()) {
+            $this->getDataContainer()->setId(
+                $this->getDataContainer()->getLink());
+        }
+        $text = $dom->createTextNode($this->getDataContainer()->getId());
+        $id->appendChild($text);
+        if (!Uri::factory($this->getDataContainer()->getId())->isValid()) {
+            $id->setAttribute('isPermaLink', 'false');
+        }
+    }
+
+    /**
+     * Set link to entry comments
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setCommentLink(DOMDocument $dom, DOMElement $root)
+    {
+        $link = $this->getDataContainer()->getCommentLink();
+        if (!$link) {
+            return;
+        }
+        $clink = $this->dom->createElement('comments');
+        $text = $dom->createTextNode($link);
+        $clink->appendChild($text);
+        $root->appendChild($clink);
+    }
+
+    /**
+     * Set entry categories
+     *
+     * @param DOMDocument $dom
+     * @param DOMElement $root
+     * @return void
+     */
+    protected function _setCategories(DOMDocument $dom, DOMElement $root)
+    {
+        $categories = $this->getDataContainer()->getCategories();
+        if (!$categories) {
+            return;
+        }
+        foreach ($categories as $cat) {
+            $category = $dom->createElement('category');
+            if (isset($cat['scheme'])) {
+                $category->setAttribute('domain', $cat['scheme']);
+            }
+            $text = $dom->createCDATASection($cat['term']);
+            $category->appendChild($text);
+            $root->appendChild($category);
+        }
+    }
+}

3rdparty/ZendFeed/Writer/Renderer/Feed/AbstractAtom.php

@@ -0,0 +1,403 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer\Renderer\Feed;
+
+use DateTime;
+use DOMDocument;
+use DOMElement;
+use Zend\Feed\Writer;
+use Zend\Feed\Writer\Renderer;
+use Zend\Feed\Writer\Version;
+
+/**
+*/
+class AbstractAtom extends Renderer\AbstractRenderer
+{
+    /**
+     * Constructor
+     *
+     * @param  Writer\AbstractFeed $container
+     */
+    public function __construct($container)
+    {
+        parent::__construct($container);
+    }
+
+    /**
+     * Set feed language
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setLanguage(DOMDocument $dom, DOMElement $root)
+    {
+        if ($this->getDataContainer()->getLanguage()) {
+            $root->setAttribute('xml:lang', $this->getDataContainer()
+                ->getLanguage());
+        }
+    }
+
+    /**
+     * Set feed title
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     * @throws Writer\Exception\InvalidArgumentException
+     */
+    protected function _setTitle(DOMDocument $dom, DOMElement $root)
+    {
+        if (!$this->getDataContainer()->getTitle()) {
+            $message = 'Atom 1.0 feed elements MUST contain exactly one'
+            . ' atom:title element but a title has not been set';
+            $exception = new Writer\Exception\InvalidArgumentException($message);
+            if (!$this->ignoreExceptions) {
+                throw $exception;
+            } else {
+                $this->exceptions[] = $exception;
+                return;
+            }
+        }
+
+        $title = $dom->createElement('title');
+        $root->appendChild($title);
+        $title->setAttribute('type', 'text');
+        $text = $dom->createTextNode($this->getDataContainer()->getTitle());
+        $title->appendChild($text);
+    }
+
+    /**
+     * Set feed description
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setDescription(DOMDocument $dom, DOMElement $root)
+    {
+        if (!$this->getDataContainer()->getDescription()) {
+            return;
+        }
+        $subtitle = $dom->createElement('subtitle');
+        $root->appendChild($subtitle);
+        $subtitle->setAttribute('type', 'text');
+        $text = $dom->createTextNode($this->getDataContainer()->getDescription());
+        $subtitle->appendChild($text);
+    }
+
+    /**
+     * Set date feed was last modified
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     * @throws Writer\Exception\InvalidArgumentException
+     */
+    protected function _setDateModified(DOMDocument $dom, DOMElement $root)
+    {
+        if (!$this->getDataContainer()->getDateModified()) {
+            $message = 'Atom 1.0 feed elements MUST contain exactly one'
+            . ' atom:updated element but a modification date has not been set';
+            $exception = new Writer\Exception\InvalidArgumentException($message);
+            if (!$this->ignoreExceptions) {
+                throw $exception;
+            } else {
+                $this->exceptions[] = $exception;
+                return;
+            }
+        }
+
+        $updated = $dom->createElement('updated');
+        $root->appendChild($updated);
+        $text = $dom->createTextNode(
+            $this->getDataContainer()->getDateModified()->format(DateTime::ISO8601)
+        );
+        $updated->appendChild($text);
+    }
+
+    /**
+     * Set feed generator string
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setGenerator(DOMDocument $dom, DOMElement $root)
+    {
+        if (!$this->getDataContainer()->getGenerator()) {
+            $this->getDataContainer()->setGenerator('Zend_Feed_Writer',
+                Version::VERSION, 'http://framework.zend.com');
+        }
+
+        $gdata = $this->getDataContainer()->getGenerator();
+        $generator = $dom->createElement('generator');
+        $root->appendChild($generator);
+        $text = $dom->createTextNode($gdata['name']);
+        $generator->appendChild($text);
+        if (array_key_exists('uri', $gdata)) {
+            $generator->setAttribute('uri', $gdata['uri']);
+        }
+        if (array_key_exists('version', $gdata)) {
+            $generator->setAttribute('version', $gdata['version']);
+        }
+    }
+
+    /**
+     * Set link to feed
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setLink(DOMDocument $dom, DOMElement $root)
+    {
+        if (!$this->getDataContainer()->getLink()) {
+            return;
+        }
+        $link = $dom->createElement('link');
+        $root->appendChild($link);
+        $link->setAttribute('rel', 'alternate');
+        $link->setAttribute('type', 'text/html');
+        $link->setAttribute('href', $this->getDataContainer()->getLink());
+    }
+
+    /**
+     * Set feed links
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     * @throws Writer\Exception\InvalidArgumentException
+     */
+    protected function _setFeedLinks(DOMDocument $dom, DOMElement $root)
+    {
+        $flinks = $this->getDataContainer()->getFeedLinks();
+        if (!$flinks || !array_key_exists('atom', $flinks)) {
+            $message = 'Atom 1.0 feed elements SHOULD contain one atom:link '
+            . 'element with a rel attribute value of "self".  This is the '
+            . 'preferred URI for retrieving Atom Feed Documents representing '
+            . 'this Atom feed but a feed link has not been set';
+            $exception = new Writer\Exception\InvalidArgumentException($message);
+            if (!$this->ignoreExceptions) {
+                throw $exception;
+            } else {
+                $this->exceptions[] = $exception;
+                return;
+            }
+        }
+
+        foreach ($flinks as $type => $href) {
+            $mime = 'application/' . strtolower($type) . '+xml';
+            $flink = $dom->createElement('link');
+            $root->appendChild($flink);
+            $flink->setAttribute('rel', 'self');
+            $flink->setAttribute('type', $mime);
+            $flink->setAttribute('href', $href);
+        }
+    }
+
+    /**
+     * Set feed authors
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setAuthors(DOMDocument $dom, DOMElement $root)
+    {
+        $authors = $this->container->getAuthors();
+        if (!$authors || empty($authors)) {
+            /**
+             * Technically we should defer an exception until we can check
+             * that all entries contain an author. If any entry is missing
+             * an author, then a missing feed author element is invalid
+             */
+            return;
+        }
+        foreach ($authors as $data) {
+            $author = $this->dom->createElement('author');
+            $name = $this->dom->createElement('name');
+            $author->appendChild($name);
+            $root->appendChild($author);
+            $text = $dom->createTextNode($data['name']);
+            $name->appendChild($text);
+            if (array_key_exists('email', $data)) {
+                $email = $this->dom->createElement('email');
+                $author->appendChild($email);
+                $text = $dom->createTextNode($data['email']);
+                $email->appendChild($text);
+            }
+            if (array_key_exists('uri', $data)) {
+                $uri = $this->dom->createElement('uri');
+                $author->appendChild($uri);
+                $text = $dom->createTextNode($data['uri']);
+                $uri->appendChild($text);
+            }
+        }
+    }
+
+    /**
+     * Set feed identifier
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     * @throws Writer\Exception\InvalidArgumentException
+     */
+    protected function _setId(DOMDocument $dom, DOMElement $root)
+    {
+        if (!$this->getDataContainer()->getId()
+        && !$this->getDataContainer()->getLink()) {
+            $message = 'Atom 1.0 feed elements MUST contain exactly one '
+            . 'atom:id element, or as an alternative, we can use the same '
+            . 'value as atom:link however neither a suitable link nor an '
+            . 'id have been set';
+            $exception = new Writer\Exception\InvalidArgumentException($message);
+            if (!$this->ignoreExceptions) {
+                throw $exception;
+            } else {
+                $this->exceptions[] = $exception;
+                return;
+            }
+        }
+
+        if (!$this->getDataContainer()->getId()) {
+            $this->getDataContainer()->setId(
+                $this->getDataContainer()->getLink());
+        }
+        $id = $dom->createElement('id');
+        $root->appendChild($id);
+        $text = $dom->createTextNode($this->getDataContainer()->getId());
+        $id->appendChild($text);
+    }
+
+    /**
+     * Set feed copyright
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setCopyright(DOMDocument $dom, DOMElement $root)
+    {
+        $copyright = $this->getDataContainer()->getCopyright();
+        if (!$copyright) {
+            return;
+        }
+        $copy = $dom->createElement('rights');
+        $root->appendChild($copy);
+        $text = $dom->createTextNode($copyright);
+        $copy->appendChild($text);
+    }
+
+    /**
+     * Set feed level logo (image)
+     *
+     * @param DOMDocument $dom
+     * @param DOMElement $root
+     * @return void
+     */
+    protected function _setImage(DOMDocument $dom, DOMElement $root)
+    {
+        $image = $this->getDataContainer()->getImage();
+        if (!$image) {
+            return;
+        }
+        $img = $dom->createElement('logo');
+        $root->appendChild($img);
+        $text = $dom->createTextNode($image['uri']);
+        $img->appendChild($text);
+    }
+
+    /**
+     * Set date feed was created
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setDateCreated(DOMDocument $dom, DOMElement $root)
+    {
+        if (!$this->getDataContainer()->getDateCreated()) {
+            return;
+        }
+        if (!$this->getDataContainer()->getDateModified()) {
+            $this->getDataContainer()->setDateModified(
+                $this->getDataContainer()->getDateCreated()
+            );
+        }
+    }
+
+    /**
+     * Set base URL to feed links
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setBaseUrl(DOMDocument $dom, DOMElement $root)
+    {
+        $baseUrl = $this->getDataContainer()->getBaseUrl();
+        if (!$baseUrl) {
+            return;
+        }
+        $root->setAttribute('xml:base', $baseUrl);
+    }
+
+    /**
+     * Set hubs to which this feed pushes
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setHubs(DOMDocument $dom, DOMElement $root)
+    {
+        $hubs = $this->getDataContainer()->getHubs();
+        if (!$hubs) {
+            return;
+        }
+        foreach ($hubs as $hubUrl) {
+            $hub = $dom->createElement('link');
+            $hub->setAttribute('rel', 'hub');
+            $hub->setAttribute('href', $hubUrl);
+            $root->appendChild($hub);
+        }
+    }
+
+    /**
+     * Set feed categories
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setCategories(DOMDocument $dom, DOMElement $root)
+    {
+        $categories = $this->getDataContainer()->getCategories();
+        if (!$categories) {
+            return;
+        }
+        foreach ($categories as $cat) {
+            $category = $dom->createElement('category');
+            $category->setAttribute('term', $cat['term']);
+            if (isset($cat['label'])) {
+                $category->setAttribute('label', $cat['label']);
+            } else {
+                $category->setAttribute('label', $cat['term']);
+            }
+            if (isset($cat['scheme'])) {
+                $category->setAttribute('scheme', $cat['scheme']);
+            }
+            $root->appendChild($category);
+        }
+    }
+}

3rdparty/ZendFeed/Writer/Renderer/Feed/Atom.php

@@ -0,0 +1,96 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer\Renderer\Feed;
+
+use DOMDocument;
+use Zend\Feed\Writer;
+use Zend\Feed\Writer\Renderer;
+
+/**
+*/
+class Atom extends AbstractAtom implements Renderer\RendererInterface
+{
+    /**
+     * Constructor
+     *
+     * @param  Writer\Feed $container
+     */
+    public function __construct(Writer\Feed $container)
+    {
+        parent::__construct($container);
+    }
+
+    /**
+     * Render Atom feed
+     *
+     * @return Atom
+     */
+    public function render()
+    {
+        if (!$this->container->getEncoding()) {
+            $this->container->setEncoding('UTF-8');
+        }
+        $this->dom = new DOMDocument('1.0', $this->container->getEncoding());
+        $this->dom->formatOutput = true;
+        $root = $this->dom->createElementNS(
+            Writer\Writer::NAMESPACE_ATOM_10, 'feed'
+        );
+        $this->setRootElement($root);
+        $this->dom->appendChild($root);
+        $this->_setLanguage($this->dom, $root);
+        $this->_setBaseUrl($this->dom, $root);
+        $this->_setTitle($this->dom, $root);
+        $this->_setDescription($this->dom, $root);
+        $this->_setImage($this->dom, $root);
+        $this->_setDateCreated($this->dom, $root);
+        $this->_setDateModified($this->dom, $root);
+        $this->_setGenerator($this->dom, $root);
+        $this->_setLink($this->dom, $root);
+        $this->_setFeedLinks($this->dom, $root);
+        $this->_setId($this->dom, $root);
+        $this->_setAuthors($this->dom, $root);
+        $this->_setCopyright($this->dom, $root);
+        $this->_setCategories($this->dom, $root);
+        $this->_setHubs($this->dom, $root);
+
+        foreach ($this->extensions as $ext) {
+            $ext->setType($this->getType());
+            $ext->setRootElement($this->getRootElement());
+            $ext->setDOMDocument($this->getDOMDocument(), $root);
+            $ext->render();
+        }
+
+        foreach ($this->container as $entry) {
+            if ($this->getDataContainer()->getEncoding()) {
+                $entry->setEncoding($this->getDataContainer()->getEncoding());
+            }
+            if ($entry instanceof Writer\Entry) {
+                $renderer = new Renderer\Entry\Atom($entry);
+            } else {
+                if (!$this->dom->documentElement->hasAttribute('xmlns:at')) {
+                    $this->dom->documentElement->setAttribute(
+                        'xmlns:at', 'http://purl.org/atompub/tombstones/1.0'
+                    );
+                }
+                $renderer = new Renderer\Entry\AtomDeleted($entry);
+            }
+            if ($this->ignoreExceptions === true) {
+                $renderer->ignoreExceptions();
+            }
+            $renderer->setType($this->getType());
+            $renderer->setRootElement($this->dom->documentElement);
+            $renderer->render();
+            $element = $renderer->getElement();
+            $imported = $this->dom->importNode($element, true);
+            $root->appendChild($imported);
+        }
+        return $this;
+    }
+}

3rdparty/ZendFeed/Writer/Renderer/Feed/Atom/AbstractAtom.php

@@ -0,0 +1,400 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Writer\Renderer\Feed\Atom;
+
+use Datetime;
+use DOMDocument;
+use DOMElement;
+use Zend\Feed;
+use Zend\Feed\Writer\Version;
+
+class AbstractAtom extends Feed\Writer\Renderer\AbstractRenderer
+{
+    /**
+     * Constructor
+     *
+     * @param  \Zend\Feed\Writer\Feed $container
+     */
+    public function __construct($container)
+    {
+        parent::__construct($container);
+    }
+
+    /**
+     * Set feed language
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setLanguage(DOMDocument $dom, DOMElement $root)
+    {
+        if ($this->getDataContainer()->getLanguage()) {
+            $root->setAttribute('xml:lang', $this->getDataContainer()
+                ->getLanguage());
+        }
+    }
+
+    /**
+     * Set feed title
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     * @throws Feed\Exception\InvalidArgumentException
+     */
+    protected function _setTitle(DOMDocument $dom, DOMElement $root)
+    {
+        if (!$this->getDataContainer()->getTitle()) {
+            $message = 'Atom 1.0 feed elements MUST contain exactly one'
+                . ' atom:title element but a title has not been set';
+            $exception = new Feed\Exception\InvalidArgumentException($message);
+            if (!$this->ignoreExceptions) {
+                throw $exception;
+            } else {
+                $this->exceptions[] = $exception;
+                return;
+            }
+        }
+
+        $title = $dom->createElement('title');
+        $root->appendChild($title);
+        $title->setAttribute('type', 'text');
+        $text = $dom->createTextNode($this->getDataContainer()->getTitle());
+        $title->appendChild($text);
+    }
+
+    /**
+     * Set feed description
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setDescription(DOMDocument $dom, DOMElement $root)
+    {
+        if (!$this->getDataContainer()->getDescription()) {
+            return;
+        }
+        $subtitle = $dom->createElement('subtitle');
+        $root->appendChild($subtitle);
+        $subtitle->setAttribute('type', 'text');
+        $text = $dom->createTextNode($this->getDataContainer()->getDescription());
+        $subtitle->appendChild($text);
+    }
+
+    /**
+     * Set date feed was last modified
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     * @throws Feed\Exception\InvalidArgumentException
+     */
+    protected function _setDateModified(DOMDocument $dom, DOMElement $root)
+    {
+        if (!$this->getDataContainer()->getDateModified()) {
+            $message = 'Atom 1.0 feed elements MUST contain exactly one'
+                . ' atom:updated element but a modification date has not been set';
+            $exception = new Feed\Exception\InvalidArgumentException($message);
+            if (!$this->ignoreExceptions) {
+                throw $exception;
+            } else {
+                $this->exceptions[] = $exception;
+                return;
+            }
+        }
+
+        $updated = $dom->createElement('updated');
+        $root->appendChild($updated);
+        $text = $dom->createTextNode(
+            $this->getDataContainer()->getDateModified()->format(DateTime::ISO8601)
+        );
+        $updated->appendChild($text);
+    }
+
+    /**
+     * Set feed generator string
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setGenerator(DOMDocument $dom, DOMElement $root)
+    {
+        if (!$this->getDataContainer()->getGenerator()) {
+            $this->getDataContainer()->setGenerator('Zend_Feed_Writer',
+                Version::VERSION, 'http://framework.zend.com');
+        }
+
+        $gdata = $this->getDataContainer()->getGenerator();
+        $generator = $dom->createElement('generator');
+        $root->appendChild($generator);
+        $text = $dom->createTextNode($gdata['name']);
+        $generator->appendChild($text);
+        if (array_key_exists('uri', $gdata)) {
+            $generator->setAttribute('uri', $gdata['uri']);
+        }
+        if (array_key_exists('version', $gdata)) {
+            $generator->setAttribute('version', $gdata['version']);
+        }
+    }
+
+    /**
+     * Set link to feed
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setLink(DOMDocument $dom, DOMElement $root)
+    {
+        if (!$this->getDataContainer()->getLink()) {
+            return;
+        }
+        $link = $dom->createElement('link');
+        $root->appendChild($link);
+        $link->setAttribute('rel', 'alternate');
+        $link->setAttribute('type', 'text/html');
+        $link->setAttribute('href', $this->getDataContainer()->getLink());
+    }
+
+    /**
+     * Set feed links
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     * @throws Feed\Exception\InvalidArgumentException
+     */
+    protected function _setFeedLinks(DOMDocument $dom, DOMElement $root)
+    {
+        $flinks = $this->getDataContainer()->getFeedLinks();
+        if (!$flinks || !array_key_exists('atom', $flinks)) {
+            $message = 'Atom 1.0 feed elements SHOULD contain one atom:link '
+                . 'element with a rel attribute value of "self".  This is the '
+                . 'preferred URI for retrieving Atom Feed Documents representing '
+                . 'this Atom feed but a feed link has not been set';
+            $exception = new Feed\Exception\InvalidArgumentException($message);
+            if (!$this->ignoreExceptions) {
+                throw $exception;
+            } else {
+                $this->exceptions[] = $exception;
+                return;
+            }
+        }
+
+        foreach ($flinks as $type => $href) {
+            $mime = 'application/' . strtolower($type) . '+xml';
+            $flink = $dom->createElement('link');
+            $root->appendChild($flink);
+            $flink->setAttribute('rel', 'self');
+            $flink->setAttribute('type', $mime);
+            $flink->setAttribute('href', $href);
+        }
+    }
+
+    /**
+     * Set feed authors
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setAuthors(DOMDocument $dom, DOMElement $root)
+    {
+        $authors = $this->container->getAuthors();
+        if (!$authors || empty($authors)) {
+            /**
+             * Technically we should defer an exception until we can check
+             * that all entries contain an author. If any entry is missing
+             * an author, then a missing feed author element is invalid
+             */
+            return;
+        }
+        foreach ($authors as $data) {
+            $author = $this->dom->createElement('author');
+            $name = $this->dom->createElement('name');
+            $author->appendChild($name);
+            $root->appendChild($author);
+            $text = $dom->createTextNode($data['name']);
+            $name->appendChild($text);
+            if (array_key_exists('email', $data)) {
+                $email = $this->dom->createElement('email');
+                $author->appendChild($email);
+                $text = $dom->createTextNode($data['email']);
+                $email->appendChild($text);
+            }
+            if (array_key_exists('uri', $data)) {
+                $uri = $this->dom->createElement('uri');
+                $author->appendChild($uri);
+                $text = $dom->createTextNode($data['uri']);
+                $uri->appendChild($text);
+            }
+        }
+    }
+
+    /**
+     * Set feed identifier
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     * @throws Feed\Exception\InvalidArgumentException
+     */
+    protected function _setId(DOMDocument $dom, DOMElement $root)
+    {
+        if (!$this->getDataContainer()->getId()
+        && !$this->getDataContainer()->getLink()) {
+            $message = 'Atom 1.0 feed elements MUST contain exactly one '
+                . 'atom:id element, or as an alternative, we can use the same '
+                . 'value as atom:link however neither a suitable link nor an '
+                . 'id have been set';
+            $exception = new Feed\Exception\InvalidArgumentException($message);
+            if (!$this->ignoreExceptions) {
+                throw $exception;
+            } else {
+                $this->exceptions[] = $exception;
+                return;
+            }
+        }
+
+        if (!$this->getDataContainer()->getId()) {
+            $this->getDataContainer()->setId(
+                $this->getDataContainer()->getLink());
+        }
+        $id = $dom->createElement('id');
+        $root->appendChild($id);
+        $text = $dom->createTextNode($this->getDataContainer()->getId());
+        $id->appendChild($text);
+    }
+
+    /**
+     * Set feed copyright
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setCopyright(DOMDocument $dom, DOMElement $root)
+    {
+        $copyright = $this->getDataContainer()->getCopyright();
+        if (!$copyright) {
+            return;
+        }
+        $copy = $dom->createElement('rights');
+        $root->appendChild($copy);
+        $text = $dom->createTextNode($copyright);
+        $copy->appendChild($text);
+    }
+    /**
+     * Set feed level logo (image)
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setImage(DOMDocument $dom, DOMElement $root)
+    {
+        $image = $this->getDataContainer()->getImage();
+        if (!$image) {
+            return;
+        }
+        $img = $dom->createElement('logo');
+        $root->appendChild($img);
+        $text = $dom->createTextNode($image['uri']);
+        $img->appendChild($text);
+    }
+
+
+    /**
+     * Set date feed was created
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setDateCreated(DOMDocument $dom, DOMElement $root)
+    {
+        if (!$this->getDataContainer()->getDateCreated()) {
+            return;
+        }
+        if (!$this->getDataContainer()->getDateModified()) {
+            $this->getDataContainer()->setDateModified(
+                $this->getDataContainer()->getDateCreated()
+            );
+        }
+    }
+
+    /**
+     * Set base URL to feed links
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setBaseUrl(DOMDocument $dom, DOMElement $root)
+    {
+        $baseUrl = $this->getDataContainer()->getBaseUrl();
+        if (!$baseUrl) {
+            return;
+        }
+        $root->setAttribute('xml:base', $baseUrl);
+    }
+
+    /**
+     * Set hubs to which this feed pushes
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setHubs(DOMDocument $dom, DOMElement $root)
+    {
+        $hubs = $this->getDataContainer()->getHubs();
+        if (!$hubs) {
+            return;
+        }
+        foreach ($hubs as $hubUrl) {
+            $hub = $dom->createElement('link');
+            $hub->setAttribute('rel', 'hub');
+            $hub->setAttribute('href', $hubUrl);
+            $root->appendChild($hub);
+        }
+    }
+
+    /**
+     * Set feed categories
+     *
+     * @param  DOMDocument $dom
+     * @param  DOMElement $root
+     * @return void
+     */
+    protected function _setCategories(DOMDocument $dom, DOMElement $root)
+    {
+        $categories = $this->getDataContainer()->getCategories();
+        if (!$categories) {
+            return;
+        }
+        foreach ($categories as $cat) {
+            $category = $dom->createElement('category');
+            $category->setAttribute('term', $cat['term']);
+            if (isset($cat['label'])) {
+                $category->setAttribute('label', $cat['label']);
+            } else {
+                $category->setAttribute('label', $cat['term']);
+            }
+            if (isset($cat['scheme'])) {
+                $category->setAttribute('scheme', $cat['scheme']);
+            }
+            $root->appendChild($category);
+        }
+    }
+}