Actualización

vendor/zendframework/zend-feed/src/Reader/AbstractEntry.php

@@ -0,0 +1,229 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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;
+
+/**
+ * @deprecated This (abstract) class is deprecated. Use Zend\Feed\Reader\Entry\AbstractEntry instead.
+ */
+abstract class AbstractEntry
+{
+    /**
+     * Feed entry data
+     *
+     * @var array
+     */
+    protected $data = [];
+
+    /**
+     * 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 = [];
+
+    /**
+     * 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;
+    }
+
+    /**
+     * 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, $method)) {
+                return call_user_func_array([$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
+     */
+    // @codingStandardsIgnoreStart
+    protected function _loadExtensions()
+    {
+        // @codingStandardsIgnoreEnd
+        $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']
+            );
+        }
+    }
+}

vendor/zendframework/zend-feed/src/Reader/AbstractFeed.php

@@ -0,0 +1,303 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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;
+
+/**
+ * @deprecated This (abstract) class is deprecated. Use \Zend\Feed\Reader\Feed\AbstractFeed instead.
+ */
+abstract class AbstractFeed implements Feed\FeedInterface
+{
+    /**
+     * Parsed feed data
+     *
+     * @var array
+     */
+    protected $data = [];
+
+    /**
+     * Parsed feed data in the shape of a DOMDocument
+     *
+     * @var DOMDocument
+     */
+    protected $domDocument = null;
+
+    /**
+     * An array of parsed feed entries
+     *
+     * @var array
+     */
+    protected $entries = [];
+
+    /**
+     * 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 = [];
+
+    /**
+     * 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\Entry\AbstractEntry
+     */
+    public function current()
+    {
+        if (0 === strpos($this->getType(), '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, $method)) {
+                return call_user_func_array([$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;
+    }
+
+    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();
+}

vendor/zendframework/zend-feed/src/Reader/Collection.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) 2005-2019 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;
+
+/**
+ * @deprecated This class is deprecated. Use the concrete collection classes
+ *     \Zend\Feed\Reader\Collection\Author and \Zend\Feed\Reader\Collection\Category
+ *     or the generic class \Zend\Feed\Reader\Collection\Collection instead.
+ */
+class Collection extends ArrayObject
+{
+}

vendor/zendframework/zend-feed/src/Reader/Collection/AbstractCollection.php

@@ -0,0 +1,25 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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();
+}

vendor/zendframework/zend-feed/src/Reader/Collection/Author.php

@@ -0,0 +1,28 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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()
+    {
+        $authors = [];
+        foreach ($this->getIterator() as $element) {
+            $authors[] = $element['name'];
+        }
+        return array_unique($authors);
+    }
+}

vendor/zendframework/zend-feed/src/Reader/Collection/Category.php

@@ -0,0 +1,34 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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()
+    {
+        $categories = [];
+        foreach ($this->getIterator() as $element) {
+            if (isset($element['label']) && ! empty($element['label'])) {
+                $categories[] = $element['label'];
+            } else {
+                $categories[] = $element['term'];
+            }
+        }
+        return array_unique($categories);
+    }
+}

vendor/zendframework/zend-feed/src/Reader/Collection/Collection.php

@@ -0,0 +1,16 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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
+{
+}

vendor/zendframework/zend-feed/src/Reader/Entry/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) 2005-2015 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 = [];
+
+    /**
+     * 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 = [];
+
+    /**
+     * 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());
+        $deep  = version_compare(PHP_VERSION, '7', 'ge') ? 1 : true;
+        $entry = $dom->importNode($this->getElement(), $deep);
+        $dom->appendChild($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;
+    }
+
+    /**
+     * 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, $method)) {
+                return call_user_func_array([$extension, $method], $args);
+            }
+        }
+        throw new Exception\RuntimeException(sprintf(
+            'Method: %s does not exist and could not be located on a registered Extension',
+            $method
+        ));
+    }
+
+    /**
+     * 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;
+        }
+    }
+}

vendor/zendframework/zend-feed/src/Reader/Entry/Atom.php

@@ -0,0 +1,367 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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();
+        $extensions = ['Atom\Entry', 'Thread\Entry', 'DublinCore\Entry'];
+
+        foreach ($extensions as $name) {
+            $extension = $manager->get($name);
+            $extension->setEntryElement($entry);
+            $extension->setEntryKey($entryKey);
+            $extension->setType($type);
+            $this->extensions[$name] = $extension;
+        }
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getAuthor($index = 0)
+    {
+        $authors = $this->getAuthors();
+
+        if (isset($authors[$index])) {
+            return $authors[$index];
+        }
+
+        return;
+    }
+
+    /**
+     * 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 \DateTime
+     */
+    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 \DateTime
+     */
+    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;
+    }
+
+    /**
+     * 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);
+        }
+    }
+}

vendor/zendframework/zend-feed/src/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) 2005-2015 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 $index
+     * @return array<string, string>|null
+     */
+    public function getAuthor($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 \DateTime
+     */
+    public function getDateCreated();
+
+    /**
+     * Get the entry modification date
+     *
+     * @return \DateTime
+     */
+    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();
+}

vendor/zendframework/zend-feed/src/Reader/Entry/Rss.php

@@ -0,0 +1,593 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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();
+        $extensions = [
+            'DublinCore\Entry',
+            'Content\Entry',
+            'Atom\Entry',
+            'WellFormedWeb\Entry',
+            'Slash\Entry',
+            'Thread\Entry',
+        ];
+        foreach ($extensions as $name) {
+            $extension = $manager->get($name);
+            $extension->setEntryElement($entry);
+            $extension->setEntryKey($entryKey);
+            $extension->setType($type);
+            $this->extensions[$name] = $extension;
+        }
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getAuthor($index = 0)
+    {
+        $authors = $this->getAuthors();
+
+        if (isset($authors[$index])) {
+            return $authors[$index];
+        }
+
+        return;
+    }
+
+    /**
+     * Get an array with feed authors
+     *
+     * @return array
+     */
+    public function getAuthors()
+    {
+        if (array_key_exists('authors', $this->data)) {
+            return $this->data['authors'];
+        }
+
+        $authors = [];
+        $authorsDc = $this->getExtension('DublinCore')->getAuthors();
+        if (! empty($authorsDc)) {
+            foreach ($authorsDc as $author) {
+                $authors[] = [
+                    '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);
+                $data = [];
+                // 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 \DateTime
+     */
+    public function getDateCreated()
+    {
+        return $this->getDateModified();
+    }
+
+    /**
+     * Get the entry's date of modification
+     *
+     * @throws Exception\RuntimeException
+     * @return \DateTime
+     */
+    public function getDateModified()
+    {
+        if (array_key_exists('datemodified', $this->data)) {
+            return $this->data['datemodified'];
+        }
+
+        $date = null;
+
+        if ($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 {
+                    $dateStandards = [DateTime::RSS, DateTime::RFC822,
+                                           DateTime::RFC2822, null];
+                    foreach ($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;
+    }
+
+    /**
+     * Get all links
+     *
+     * @return array
+     */
+    public function getLinks()
+    {
+        if (array_key_exists('links', $this->data)) {
+            return $this->data['links'];
+        }
+
+        $links = [];
+
+        if ($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[] = [
+                    '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);
+        }
+    }
+}

vendor/zendframework/zend-feed/src/Reader/Exception/BadMethodCallException.php

@@ -0,0 +1,16 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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
+{
+}

vendor/zendframework/zend-feed/src/Reader/Exception/ExceptionInterface.php

@@ -0,0 +1,16 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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
+{
+}

vendor/zendframework/zend-feed/src/Reader/Exception/InvalidArgumentException.php

@@ -0,0 +1,16 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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
+{
+}

vendor/zendframework/zend-feed/src/Reader/Exception/InvalidHttpClientException.php

@@ -0,0 +1,16 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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 InvalidHttpClientException extends Exception\InvalidArgumentException implements ExceptionInterface
+{
+}

vendor/zendframework/zend-feed/src/Reader/Exception/RuntimeException.php

@@ -0,0 +1,16 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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
+{
+}

vendor/zendframework/zend-feed/src/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) 2005-2015 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 = [];
+
+    /**
+     * 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
+        ) {
+            $this->setXpathPrefix('//rss:item[' . ((int)$this->entryKey + 1) . ']');
+            return $this;
+        }
+
+        if ($type === Reader\Reader::TYPE_ATOM_10
+            || $type === Reader\Reader::TYPE_ATOM_03
+        ) {
+            $this->setXpathPrefix('//atom:entry[' . ((int)$this->entryKey + 1) . ']');
+            return $this;
+        }
+
+        $this->setXpathPrefix('//item[' . ((int)$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();
+}

vendor/zendframework/zend-feed/src/Reader/Extension/AbstractFeed.php

@@ -0,0 +1,175 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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 = [];
+
+    /**
+     * 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 AbstractFeed
+     */
+    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();
+}

vendor/zendframework/zend-feed/src/Reader/Extension/Atom/Entry.php

@@ -0,0 +1,634 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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;
+    }
+
+    /**
+     * Get an array with feed authors
+     *
+     * @return Collection\Author
+     */
+    public function getAuthors()
+    {
+        if (array_key_exists('authors', $this->data)) {
+            return $this->data['authors'];
+        }
+
+        $authors = [];
+        $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());
+                    $deep = version_compare(PHP_VERSION, '7', 'ge') ? 1 : true;
+                    $xhtmls = $d->importNode($xhtml, $deep);
+                    $d->appendChild($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 = [
+            "/<\?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;
+    }
+
+    /**
+     * Get all links
+     *
+     * @return array
+     */
+    public function getLinks()
+    {
+        if (array_key_exists('links', $this->data)) {
+            return $this->data['links'];
+        }
+
+        $links = [];
+
+        $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[] = [
+                    '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 = [];
+
+        $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;
+        }
+        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;
+        }
+    }
+}

vendor/zendframework/zend-feed/src/Reader/Extension/Atom/Feed.php

@@ -0,0 +1,539 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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;
+    }
+
+    /**
+     * 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');
+
+        $authors = [];
+
+        if ($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 = ['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 = [];
+
+        $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[] = [
+                    '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 = [];
+
+        $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;
+        }
+        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.
+     *
+     * @param string $link
+     * @return string|null
+     */
+    protected function absolutiseUri($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;
+        }
+    }
+}

vendor/zendframework/zend-feed/src/Reader/Extension/Content/Entry.php

@@ -0,0 +1,36 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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/');
+    }
+}

vendor/zendframework/zend-feed/src/Reader/Extension/CreativeCommons/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) 2005-2015 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\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;
+    }
+
+    /**
+     * Get the entry licenses
+     *
+     * @return array
+     */
+    public function getLicenses()
+    {
+        $name = 'licenses';
+        if (array_key_exists($name, $this->data)) {
+            return $this->data[$name];
+        }
+
+        $licenses = [];
+        $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');
+    }
+}

vendor/zendframework/zend-feed/src/Reader/Extension/CreativeCommons/Feed.php

@@ -0,0 +1,70 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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\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;
+    }
+
+    /**
+     * Get the entry licenses
+     *
+     * @return array
+     */
+    public function getLicenses()
+    {
+        $name = 'licenses';
+        if (array_key_exists($name, $this->data)) {
+            return $this->data[$name];
+        }
+
+        $licenses = [];
+        $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');
+    }
+}

vendor/zendframework/zend-feed/src/Reader/Extension/DublinCore/Entry.php

@@ -0,0 +1,234 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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;
+    }
+
+    /**
+     * Get an array with feed authors
+     *
+     * @return array
+     */
+    public function getAuthors()
+    {
+        if (array_key_exists('authors', $this->data)) {
+            return $this->data['authors'];
+        }
+
+        $authors = [];
+        $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[] = [
+                    '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[] = [
+                    '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 = $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 = $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 = $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/');
+    }
+}

vendor/zendframework/zend-feed/src/Reader/Extension/DublinCore/Feed.php

@@ -0,0 +1,276 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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;
+    }
+
+    /**
+     * Get an array with feed authors
+     *
+     * @return array
+     */
+    public function getAuthors()
+    {
+        if (array_key_exists('authors', $this->data)) {
+            return $this->data['authors'];
+        }
+
+        $authors = [];
+        $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[] = [
+                    '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 = $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 = $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 = $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 = $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 = $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[] = [
+                    '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/');
+    }
+}

vendor/zendframework/zend-feed/src/Reader/Extension/GooglePlayPodcast/Entry.php

@@ -0,0 +1,90 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-feed for the canonical source repository
+ * @copyright Copyright (c) 2018 Zend Technologies USA Inc. (https://www.zend.com)
+ * @license   https://github.com/zendframework/zend-feed/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Feed\Reader\Extension\GooglePlayPodcast;
+
+use Zend\Feed\Reader\Extension;
+
+class Entry extends Extension\AbstractEntry
+{
+    /**
+     * Get the entry block
+     *
+     * @return string
+     */
+    public function getPlayPodcastBlock()
+    {
+        if (isset($this->data['block'])) {
+            return $this->data['block'];
+        }
+
+        $block = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/googleplay:block)');
+
+        if (! $block) {
+            $block = null;
+        }
+
+        $this->data['block'] = $block;
+
+        return $this->data['block'];
+    }
+
+    /**
+     * Get the entry explicit
+     *
+     * @return string
+     */
+    public function getPlayPodcastExplicit()
+    {
+        if (isset($this->data['explicit'])) {
+            return $this->data['explicit'];
+        }
+
+        $explicit = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/googleplay:explicit)');
+
+        if (! $explicit) {
+            $explicit = null;
+        }
+
+        $this->data['explicit'] = $explicit;
+
+        return $this->data['explicit'];
+    }
+
+    /**
+     * Get the episode summary/description
+     *
+     * Uses verbiage so it does not conflict with base entry.
+     *
+     * @return string
+     */
+    public function getPlayPodcastDescription()
+    {
+        if (isset($this->data['description'])) {
+            return $this->data['description'];
+        }
+
+        $description = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/googleplay:description)');
+
+        if (! $description) {
+            $description = null;
+        }
+
+        $this->data['description'] = $description;
+
+        return $this->data['description'];
+    }
+
+    /**
+     * Register googleplay namespace
+     *
+     */
+    protected function registerNamespaces()
+    {
+        $this->xpath->registerNamespace('googleplay', 'http://www.google.com/schemas/play-podcasts/1.0');
+    }
+}

vendor/zendframework/zend-feed/src/Reader/Extension/GooglePlayPodcast/Feed.php

@@ -0,0 +1,175 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-feed for the canonical source repository
+ * @copyright Copyright (c) 2018 Zend Technologies USA Inc. (https://www.zend.com)
+ * @license   https://github.com/zendframework/zend-feed/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Feed\Reader\Extension\GooglePlayPodcast;
+
+use DOMText;
+use Zend\Feed\Reader\Extension;
+
+class Feed extends Extension\AbstractFeed
+{
+    /**
+     * Get the entry author
+     *
+     * @return string
+     */
+    public function getPlayPodcastAuthor()
+    {
+        if (isset($this->data['author'])) {
+            return $this->data['author'];
+        }
+
+        $author = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/googleplay:author)');
+
+        if (! $author) {
+            $author = null;
+        }
+
+        $this->data['author'] = $author;
+
+        return $this->data['author'];
+    }
+
+    /**
+     * Get the entry block
+     *
+     * @return string
+     */
+    public function getPlayPodcastBlock()
+    {
+        if (isset($this->data['block'])) {
+            return $this->data['block'];
+        }
+
+        $block = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/googleplay:block)');
+
+        if (! $block) {
+            $block = null;
+        }
+
+        $this->data['block'] = $block;
+
+        return $this->data['block'];
+    }
+
+    /**
+     * Get the entry category
+     *
+     * @return array|null
+     */
+    public function getPlayPodcastCategories()
+    {
+        if (isset($this->data['categories'])) {
+            return $this->data['categories'];
+        }
+
+        $categoryList = $this->xpath->query($this->getXpathPrefix() . '/googleplay:category');
+
+        $categories = [];
+
+        if ($categoryList->length > 0) {
+            foreach ($categoryList as $node) {
+                $children = null;
+
+                if ($node->childNodes->length > 0) {
+                    $children = [];
+
+                    foreach ($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 $this->data['categories'];
+    }
+
+    /**
+     * Get the entry explicit
+     *
+     * @return string
+     */
+    public function getPlayPodcastExplicit()
+    {
+        if (isset($this->data['explicit'])) {
+            return $this->data['explicit'];
+        }
+
+        $explicit = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/googleplay:explicit)');
+
+        if (! $explicit) {
+            $explicit = null;
+        }
+
+        $this->data['explicit'] = $explicit;
+
+        return $this->data['explicit'];
+    }
+
+    /**
+     * Get the feed/podcast image
+     *
+     * @return string
+     */
+    public function getPlayPodcastImage()
+    {
+        if (isset($this->data['image'])) {
+            return $this->data['image'];
+        }
+
+        $image = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/googleplay:image/@href)');
+
+        if (! $image) {
+            $image = null;
+        }
+
+        $this->data['image'] = $image;
+
+        return $this->data['image'];
+    }
+
+    /**
+     * Get the entry description
+     *
+     * @return string
+     */
+    public function getPlayPodcastDescription()
+    {
+        if (isset($this->data['description'])) {
+            return $this->data['description'];
+        }
+
+        $description = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/googleplay:description)');
+
+        if (! $description) {
+            $description = null;
+        }
+
+        $this->data['description'] = $description;
+
+        return $this->data['description'];
+    }
+
+    /**
+     * Register googleplay namespace
+     *
+     */
+    protected function registerNamespaces()
+    {
+        $this->xpath->registerNamespace('googleplay', 'http://www.google.com/schemas/play-podcasts/1.0');
+    }
+}

vendor/zendframework/zend-feed/src/Reader/Extension/Podcast/Entry.php

@@ -0,0 +1,314 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-feed for the canonical source repository
+ * @copyright Copyright (c) 2005-2018 Zend Technologies USA Inc. (https://www.zend.com)
+ * @license   https://github.com/zendframework/zend-feed/blob/master/LICENSE.md 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 $this->data['explicit'];
+    }
+
+    /**
+     * Get the entry keywords
+     *
+     * @deprecated since 2.10.0; itunes:keywords is no longer part of the
+     *     iTunes podcast RSS specification.
+     * @return string
+     */
+    public function getKeywords()
+    {
+        trigger_error(
+            'itunes:keywords has been deprecated in the iTunes podcast RSS specification,'
+            . ' and should not be relied on.',
+            \E_USER_DEPRECATED
+        );
+
+        if (isset($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 $this->data['keywords'];
+    }
+
+    /**
+     * Get the entry title
+     *
+     * @return string
+     */
+    public function getTitle()
+    {
+        if (isset($this->data['title'])) {
+            return $this->data['title'];
+        }
+
+        $title = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:title)');
+
+        if (! $title) {
+            $title = null;
+        }
+
+        $this->data['title'] = $title;
+
+        return $this->data['title'];
+    }
+
+    /**
+     * Get the entry subtitle
+     *
+     * @return string
+     */
+    public function getSubtitle()
+    {
+        if (isset($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 $this->data['summary'];
+    }
+
+    /**
+     * Get the entry image
+     *
+     * @return string
+     */
+    public function getItunesImage()
+    {
+        if (isset($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 $this->data['image'];
+    }
+
+    /**
+     * Get the episode number
+     *
+     * @return null|int
+     */
+    public function getEpisode()
+    {
+        if (isset($this->data['episode'])) {
+            return $this->data['episode'];
+        }
+
+        $episode = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:episode)');
+
+        if (! $episode) {
+            $episode = null;
+        }
+
+        $this->data['episode'] = null === $episode ? $episode : (int) $episode;
+
+        return $this->data['episode'];
+    }
+
+    /**
+     * Get the episode number
+     *
+     * @return string One of "full", "trailer", or "bonus"; defaults to "full".
+     */
+    public function getEpisodeType()
+    {
+        if (isset($this->data['episodeType'])) {
+            return $this->data['episodeType'];
+        }
+
+        $type = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:episodeType)');
+
+        if (! $type) {
+            $type = 'full';
+        }
+
+        $this->data['episodeType'] = (string) $type;
+
+        return $this->data['episodeType'];
+    }
+
+    /**
+     * Is the episode closed captioned?
+     *
+     * Returns true only if itunes:isClosedCaptioned has the value 'Yes'.
+     *
+     * @return bool
+     */
+    public function isClosedCaptioned()
+    {
+        if (isset($this->data['isClosedCaptioned'])) {
+            return $this->data['isClosedCaptioned'];
+        }
+
+        $status = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:isClosedCaptioned)');
+
+        $this->data['isClosedCaptioned'] = $status === 'Yes';
+
+        return $this->data['isClosedCaptioned'];
+    }
+
+    /**
+     * Get the season number
+     *
+     * @return null|int
+     */
+    public function getSeason()
+    {
+        if (isset($this->data['season'])) {
+            return $this->data['season'];
+        }
+
+        $season = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:season)');
+
+        if (! $season) {
+            $season = null;
+        }
+
+        $this->data['season'] = null === $season ? $season : (int) $season;
+
+        return $this->data['season'];
+    }
+
+    /**
+     * Register iTunes namespace
+     *
+     */
+    protected function registerNamespaces()
+    {
+        $this->xpath->registerNamespace('itunes', 'http://www.itunes.com/dtds/podcast-1.0.dtd');
+    }
+}

vendor/zendframework/zend-feed/src/Reader/Extension/Podcast/Feed.php

@@ -0,0 +1,325 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-feed for the canonical source repository
+ * @copyright Copyright (c) 2005-2018 Zend Technologies USA Inc. (https://www.zend.com)
+ * @license   https://github.com/zendframework/zend-feed/blob/master/LICENSE.md 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 $this->data['block'];
+    }
+
+    /**
+     * Get the entry category
+     *
+     * @return array|null
+     */
+    public function getItunesCategories()
+    {
+        if (isset($this->data['categories'])) {
+            return $this->data['categories'];
+        }
+
+        $categoryList = $this->xpath->query($this->getXpathPrefix() . '/itunes:category');
+
+        $categories = [];
+
+        if ($categoryList->length > 0) {
+            foreach ($categoryList as $node) {
+                $children = null;
+
+                if ($node->childNodes->length > 0) {
+                    $children = [];
+
+                    foreach ($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 $this->data['explicit'];
+    }
+
+    /**
+     * Get the feed/podcast image
+     *
+     * @return string
+     */
+    public function getItunesImage()
+    {
+        if (isset($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 $this->data['image'];
+    }
+
+    /**
+     * Get the entry keywords
+     *
+     * @deprecated since 2.10.0; itunes:keywords is no longer part of the
+     *     iTunes podcast RSS specification.
+     * @return string
+     */
+    public function getKeywords()
+    {
+        trigger_error(
+            'itunes:keywords has been deprecated in the iTunes podcast RSS specification,'
+            . ' and should not be relied on.',
+            \E_USER_DEPRECATED
+        );
+
+        if (isset($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 $this->data['summary'];
+    }
+
+    /**
+     * Get the type of podcast
+     *
+     * @return string One of "episodic" or "serial". Defaults to "episodic"
+     *     if no itunes:type tag is encountered.
+     */
+    public function getPodcastType()
+    {
+        if (isset($this->data['podcastType'])) {
+            return $this->data['podcastType'];
+        }
+
+        $type = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:type)');
+
+        if (! $type) {
+            $type = 'episodic';
+        }
+
+        $this->data['podcastType'] = (string) $type;
+
+        return $this->data['podcastType'];
+    }
+
+    /**
+     * Is the podcast complete (no more episodes will post)?
+     *
+     * @return bool
+     */
+    public function isComplete()
+    {
+        if (isset($this->data['complete'])) {
+            return $this->data['complete'];
+        }
+
+        $complete = $this->xpath->evaluate('string(' . $this->getXpathPrefix() . '/itunes:complete)');
+
+        if (! $complete) {
+            $complete = false;
+        }
+
+        $this->data['complete'] = $complete === 'Yes';
+
+        return $this->data['complete'];
+    }
+
+    /**
+     * Register iTunes namespace
+     *
+     */
+    protected function registerNamespaces()
+    {
+        $this->xpath->registerNamespace('itunes', 'http://www.itunes.com/dtds/podcast-1.0.dtd');
+    }
+}

vendor/zendframework/zend-feed/src/Reader/Extension/Slash/Entry.php

@@ -0,0 +1,122 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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);
+        $hitParade    = [];
+
+        if (! empty($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/');
+    }
+}

vendor/zendframework/zend-feed/src/Reader/Extension/Syndication/Feed.php

@@ -0,0 +1,150 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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/');
+    }
+}

vendor/zendframework/zend-feed/src/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) 2005-2015 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');
+    }
+}

vendor/zendframework/zend-feed/src/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) 2005-2015 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/');
+    }
+}

vendor/zendframework/zend-feed/src/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) 2005-2015 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',
+                $method,
+                __CLASS__
+            ));
+        }
+        return call_user_func_array([$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);
+    }
+}

vendor/zendframework/zend-feed/src/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) 2005-2015 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);
+}

vendor/zendframework/zend-feed/src/Reader/ExtensionPluginManager.php

@@ -0,0 +1,196 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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;
+use Zend\ServiceManager\Exception\InvalidServiceException;
+use Zend\ServiceManager\Factory\InvokableFactory;
+
+/**
+ * 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 implements ExtensionManagerInterface
+{
+    /**
+     * Aliases for default set of extension classes
+     *
+     * @var array
+     */
+    protected $aliases = [
+        'atomentry'            => Extension\Atom\Entry::class,
+        'atomEntry'            => Extension\Atom\Entry::class,
+        'AtomEntry'            => Extension\Atom\Entry::class,
+        'Atom\Entry'           => Extension\Atom\Entry::class,
+        'atomfeed'             => Extension\Atom\Feed::class,
+        'atomFeed'             => Extension\Atom\Feed::class,
+        'AtomFeed'             => Extension\Atom\Feed::class,
+        'Atom\Feed'            => Extension\Atom\Feed::class,
+        'contententry'         => Extension\Content\Entry::class,
+        'contentEntry'         => Extension\Content\Entry::class,
+        'ContentEntry'         => Extension\Content\Entry::class,
+        'Content\Entry'        => Extension\Content\Entry::class,
+        'creativecommonsentry' => Extension\CreativeCommons\Entry::class,
+        'creativeCommonsEntry' => Extension\CreativeCommons\Entry::class,
+        'CreativeCommonsEntry' => Extension\CreativeCommons\Entry::class,
+        'CreativeCommons\Entry' => Extension\CreativeCommons\Entry::class,
+        'creativecommonsfeed'  => Extension\CreativeCommons\Feed::class,
+        'creativeCommonsFeed'  => Extension\CreativeCommons\Feed::class,
+        'CreativeCommonsFeed'  => Extension\CreativeCommons\Feed::class,
+        'CreativeCommons\Feed' => Extension\CreativeCommons\Feed::class,
+        'dublincoreentry'      => Extension\DublinCore\Entry::class,
+        'dublinCoreEntry'      => Extension\DublinCore\Entry::class,
+        'DublinCoreEntry'      => Extension\DublinCore\Entry::class,
+        'DublinCore\Entry'     => Extension\DublinCore\Entry::class,
+        'dublincorefeed'       => Extension\DublinCore\Feed::class,
+        'dublinCoreFeed'       => Extension\DublinCore\Feed::class,
+        'DublinCoreFeed'       => Extension\DublinCore\Feed::class,
+        'DublinCore\Feed'      => Extension\DublinCore\Feed::class,
+        'googleplaypodcastentry'  => Extension\GooglePlayPodcast\Entry::class,
+        'googlePlayPodcastEntry'  => Extension\GooglePlayPodcast\Entry::class,
+        'GooglePlayPodcastEntry'  => Extension\GooglePlayPodcast\Entry::class,
+        'GooglePlayPodcast\Entry' => Extension\GooglePlayPodcast\Entry::class,
+        'googleplaypodcastfeed'   => Extension\GooglePlayPodcast\Feed::class,
+        'googlePlayPodcastFeed'   => Extension\GooglePlayPodcast\Feed::class,
+        'GooglePlayPodcastFeed'   => Extension\GooglePlayPodcast\Feed::class,
+        'GooglePlayPodcast\Feed'  => Extension\GooglePlayPodcast\Feed::class,
+        'podcastentry'         => Extension\Podcast\Entry::class,
+        'podcastEntry'         => Extension\Podcast\Entry::class,
+        'PodcastEntry'         => Extension\Podcast\Entry::class,
+        'Podcast\Entry'        => Extension\Podcast\Entry::class,
+        'podcastfeed'          => Extension\Podcast\Feed::class,
+        'podcastFeed'          => Extension\Podcast\Feed::class,
+        'PodcastFeed'          => Extension\Podcast\Feed::class,
+        'Podcast\Feed'         => Extension\Podcast\Feed::class,
+        'slashentry'           => Extension\Slash\Entry::class,
+        'slashEntry'           => Extension\Slash\Entry::class,
+        'SlashEntry'           => Extension\Slash\Entry::class,
+        'Slash\Entry'          => Extension\Slash\Entry::class,
+        'syndicationfeed'      => Extension\Syndication\Feed::class,
+        'syndicationFeed'      => Extension\Syndication\Feed::class,
+        'SyndicationFeed'      => Extension\Syndication\Feed::class,
+        'Syndication\Feed'     => Extension\Syndication\Feed::class,
+        'threadentry'          => Extension\Thread\Entry::class,
+        'threadEntry'          => Extension\Thread\Entry::class,
+        'ThreadEntry'          => Extension\Thread\Entry::class,
+        'Thread\Entry'         => Extension\Thread\Entry::class,
+        'wellformedwebentry'   => Extension\WellFormedWeb\Entry::class,
+        'wellFormedWebEntry'   => Extension\WellFormedWeb\Entry::class,
+        'WellFormedWebEntry'   => Extension\WellFormedWeb\Entry::class,
+        'WellFormedWeb\Entry'  => Extension\WellFormedWeb\Entry::class,
+    ];
+
+    /**
+     * Factories for default set of extension classes
+     *
+     * @var array
+     */
+    protected $factories = [
+        Extension\Atom\Entry::class            => InvokableFactory::class,
+        Extension\Atom\Feed::class             => InvokableFactory::class,
+        Extension\Content\Entry::class         => InvokableFactory::class,
+        Extension\CreativeCommons\Entry::class => InvokableFactory::class,
+        Extension\CreativeCommons\Feed::class  => InvokableFactory::class,
+        Extension\DublinCore\Entry::class      => InvokableFactory::class,
+        Extension\DublinCore\Feed::class       => InvokableFactory::class,
+        Extension\GooglePlayPodcast\Entry::class => InvokableFactory::class,
+        Extension\GooglePlayPodcast\Feed::class  => InvokableFactory::class,
+        Extension\Podcast\Entry::class         => InvokableFactory::class,
+        Extension\Podcast\Feed::class          => InvokableFactory::class,
+        Extension\Slash\Entry::class           => InvokableFactory::class,
+        Extension\Syndication\Feed::class      => InvokableFactory::class,
+        Extension\Thread\Entry::class          => InvokableFactory::class,
+        Extension\WellFormedWeb\Entry::class   => InvokableFactory::class,
+        // Legacy (v2) due to alias resolution; canonical form of resolved
+        // alias is used to look up the factory, while the non-normalized
+        // resolved alias is used as the requested name passed to the factory.
+        'zendfeedreaderextensionatomentry'            => InvokableFactory::class,
+        'zendfeedreaderextensionatomfeed'             => InvokableFactory::class,
+        'zendfeedreaderextensioncontententry'         => InvokableFactory::class,
+        'zendfeedreaderextensioncreativecommonsentry' => InvokableFactory::class,
+        'zendfeedreaderextensioncreativecommonsfeed'  => InvokableFactory::class,
+        'zendfeedreaderextensiondublincoreentry'      => InvokableFactory::class,
+        'zendfeedreaderextensiondublincorefeed'       => InvokableFactory::class,
+        'zendfeedreaderextensiongoogleplaypodcastentry' => InvokableFactory::class,
+        'zendfeedreaderextensiongoogleplaypodcastfeed'  => InvokableFactory::class,
+        'zendfeedreaderextensionpodcastentry'         => InvokableFactory::class,
+        'zendfeedreaderextensionpodcastfeed'          => InvokableFactory::class,
+        'zendfeedreaderextensionslashentry'           => InvokableFactory::class,
+        'zendfeedreaderextensionsyndicationfeed'      => InvokableFactory::class,
+        'zendfeedreaderextensionthreadentry'          => InvokableFactory::class,
+        'zendfeedreaderextensionwellformedwebentry'   => InvokableFactory::class,
+    ];
+
+    /**
+     * Do not share instances (v2)
+     *
+     * @var bool
+     */
+    protected $shareByDefault = false;
+
+    /**
+     * Do not share instances (v3)
+     *
+     * @var bool
+     */
+    protected $sharedByDefault = false;
+
+    /**
+     * Validate the plugin
+     *
+     * Checks that the extension loaded is of a valid type.
+     *
+     * @param  mixed $plugin
+     * @return void
+     * @throws Exception\InvalidArgumentException if invalid
+     */
+    public function validate($plugin)
+    {
+        if ($plugin instanceof Extension\AbstractEntry
+            || $plugin instanceof Extension\AbstractFeed
+        ) {
+            // we're okay
+            return;
+        }
+
+        throw new InvalidServiceException(sprintf(
+            'Plugin of type %s is invalid; must implement %s\Extension\AbstractFeed '
+            . 'or %s\Extension\AbstractEntry',
+            (is_object($plugin) ? get_class($plugin) : gettype($plugin)),
+            __NAMESPACE__,
+            __NAMESPACE__
+        ));
+    }
+
+    /**
+     * Validate the plugin (v2)
+     *
+     * @param  mixed $plugin
+     * @return void
+     * @throws Exception\InvalidArgumentException if invalid
+     */
+    public function validatePlugin($plugin)
+    {
+        try {
+            $this->validate($plugin);
+        } catch (InvalidServiceException $e) {
+            throw new Exception\InvalidArgumentException(sprintf(
+                'Plugin of type %s is invalid; must implement %s\Extension\AbstractFeed '
+                . 'or %s\Extension\AbstractEntry',
+                (is_object($plugin) ? get_class($plugin) : gettype($plugin)),
+                __NAMESPACE__,
+                __NAMESPACE__
+            ));
+        }
+    }
+}

vendor/zendframework/zend-feed/src/Reader/Feed/AbstractFeed.php

@@ -0,0 +1,309 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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 = [];
+
+    /**
+     * Parsed feed data in the shape of a DOMDocument
+     *
+     * @var DOMDocument
+     */
+    protected $domDocument = null;
+
+    /**
+     * An array of parsed feed entries
+     *
+     * @var array
+     */
+    protected $entries = [];
+
+    /**
+     * 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 = [];
+
+    /**
+     * 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 (0 === strpos($this->getType(), '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, $method)) {
+                return call_user_func_array([$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 $name
+     * @return \Zend\Feed\Reader\Extension\AbstractFeed|null
+     */
+    public function getExtension($name)
+    {
+        if (array_key_exists($name . '\\Feed', $this->extensions)) {
+            return $this->extensions[$name . '\\Feed'];
+        }
+        return;
+    }
+
+    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();
+}

vendor/zendframework/zend-feed/src/Reader/Feed/Atom.php

@@ -0,0 +1,408 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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;
+    }
+
+    /**
+     * 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 \DateTime|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 \DateTime|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;
+    }
+
+    /**
+     * 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);
+        }
+    }
+}

vendor/zendframework/zend-feed/src/Reader/Feed/Atom/Source.php

@@ -0,0 +1,107 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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();
+        $extensions = ['Atom\Feed', 'DublinCore\Feed'];
+
+        foreach ($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()
+    {
+    }
+}

vendor/zendframework/zend-feed/src/Reader/Feed/FeedInterface.php

@@ -0,0 +1,110 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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 \DateTime|null
+     */
+    public function getDateCreated();
+
+    /**
+     * Get the feed modification date
+     *
+     * @return \DateTime|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();
+}

vendor/zendframework/zend-feed/src/Reader/Feed/Rss.php

@@ -0,0 +1,696 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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;
+    }
+
+    /**
+     * Get an array with feed authors
+     *
+     * @return array
+     */
+    public function getAuthors()
+    {
+        if (array_key_exists('authors', $this->data)) {
+            return $this->data['authors'];
+        }
+
+        $authors = [];
+        $authorsDc = $this->getExtension('DublinCore')->getAuthors();
+        if (! empty($authorsDc)) {
+            foreach ($authorsDc as $author) {
+                $authors[] = [
+                    '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);
+                $data = [];
+                // 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 DateTime|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'];
+        }
+
+        $date = null;
+
+        if ($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 {
+                    $dateStandards = [DateTime::RSS, DateTime::RFC822,
+                                           DateTime::RFC2822, null];
+                    foreach ($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'];
+        }
+
+        $date = null;
+
+        if ($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 {
+                    $dateStandards = [DateTime::RSS, DateTime::RFC822,
+                                           DateTime::RFC2822, null];
+                    foreach ($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 $this->data['description'];
+        }
+
+        if ($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 = [];
+            $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 $this->data['link'];
+        }
+
+        if ($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 = $this->getExtension('Atom')->getFeedLink();
+
+        if ($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 $this->data['title'];
+        }
+
+        if ($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[] = [
+                    '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;
+        }
+    }
+}

vendor/zendframework/zend-feed/src/Reader/FeedSet.php

@@ -0,0 +1,174 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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([
+                'rel' => 'alternate',
+                'type' => $link->getAttribute('type'),
+                'href' => $this->absolutiseUri(trim($link->getAttribute('href')), $uri),
+                'title' => $link->getAttribute('title'),
+            ]);
+        }
+    }
+
+    /**
+     *  Attempt to turn a relative URI into an absolute URI
+     *
+     *  @param string $link
+     *  @param string $uri OPTIONAL
+     *  @return string|null absolutised link or null if invalid
+     */
+    protected function absolutiseUri($link, $uri = null)
+    {
+        $linkUri = Uri::factory($link);
+        if ($linkUri->isAbsolute()) {
+            // invalid absolute link can not be recovered
+            return $linkUri->isValid() ? $link : null;
+        }
+
+        $scheme = 'http';
+        if ($uri !== null) {
+            $uri = Uri::factory($uri);
+            $scheme = $uri->getScheme() ?: $scheme;
+        }
+
+        if ($linkUri->getHost()) {
+            $link = $this->resolveSchemeRelativeUri($link, $scheme);
+        } elseif ($uri !== null) {
+            $link = $this->resolveRelativeUri($link, $scheme, $uri->getHost(), $uri->getPath());
+        }
+
+        if (! Uri::factory($link)->isValid()) {
+            return null;
+        }
+
+        return $link;
+    }
+
+    /**
+     * Resolves scheme relative link to absolute
+     *
+     * @param string $link
+     * @param string $scheme
+     * @return string
+     */
+    private function resolveSchemeRelativeUri($link, $scheme)
+    {
+        $link = ltrim($link, '/');
+        return sprintf('%s://%s', $scheme, $link);
+    }
+
+    /**
+     *  Resolves relative link to absolute
+     *
+     *  @param string $link
+     *  @param string $scheme
+     *  @param string $host
+     *  @param string $uriPath
+     *  @return string
+     */
+    private function resolveRelativeUri($link, $scheme, $host, $uriPath)
+    {
+        if ($link[0] !== '/') {
+            $link = $uriPath . '/' . $link;
+        }
+        return sprintf(
+            '%s://%s/%s',
+            $scheme,
+            $host,
+            $this->canonicalizePath($link)
+        );
+    }
+
+    /**
+     *  Canonicalize relative path
+     *
+     * @param string $path
+     * @return string
+     */
+    protected function canonicalizePath($path)
+    {
+        $parts = array_filter(explode('/', $path));
+        $absolutes = [];
+        foreach ($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;
+            }
+            $feed = Reader::import($this->offsetGet('href'));
+            $this->offsetSet('feed', $feed);
+            return $feed;
+        }
+        return parent::offsetGet($offset);
+    }
+}

vendor/zendframework/zend-feed/src/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) 2005-2015 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);
+}

vendor/zendframework/zend-feed/src/Reader/Http/HeaderAwareClientInterface.php

@@ -0,0 +1,33 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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 HeaderAwareClientInterface extends ClientInterface
+{
+    /**
+     * Allow specifying headers to use when fetching a feed.
+     *
+     * Headers MUST be in the format:
+     *
+     * <code>
+     * [
+     *     'header-name' => [
+     *         'header',
+     *         'values'
+     *     ]
+     * ]
+     * </code>
+     *
+     * @param string $uri
+     * @param array $headers
+     * @return HeaderAwareResponseInterface
+     */
+    public function get($uri, array $headers = []);
+}

vendor/zendframework/zend-feed/src/Reader/Http/HeaderAwareResponseInterface.php

@@ -0,0 +1,28 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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 HeaderAwareResponseInterface extends ResponseInterface
+{
+    /**
+     * Retrieve a header (as a single line) from the response.
+     *
+     * Header name lookups MUST be case insensitive.
+     *
+     * Since the only header values the feed reader consumes are singular
+     * in nature, this method is expected to return a string, and not
+     * an array of values.
+     *
+     * @param string $name Header name to retrieve.
+     * @param mixed $default Default value to use if header is not present.
+     * @return string
+     */
+    public function getHeaderLine($name, $default = null);
+}

vendor/zendframework/zend-feed/src/Reader/Http/Psr7ResponseDecorator.php

@@ -0,0 +1,68 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Http;
+
+use Psr\Http\Message\ResponseInterface as Psr7ResponseInterface;
+
+/**
+ * ResponseInterface wrapper for a PSR-7 response.
+ */
+class Psr7ResponseDecorator implements HeaderAwareResponseInterface
+{
+    /**
+     * @var Psr7ResponseInterface
+     */
+    private $decoratedResponse;
+
+    /**
+     * @param Psr7ResponseInterface $response
+     */
+    public function __construct(Psr7ResponseInterface $response)
+    {
+        $this->decoratedResponse = $response;
+    }
+
+    /**
+     * Return the original PSR-7 response being decorated.
+     *
+     * @return Psr7ResponseInterface
+     */
+    public function getDecoratedResponse()
+    {
+        return $this->decoratedResponse;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getBody()
+    {
+        return (string) $this->decoratedResponse->getBody();
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getStatusCode()
+    {
+        return $this->decoratedResponse->getStatusCode();
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getHeaderLine($name, $default = null)
+    {
+        if (! $this->decoratedResponse->hasHeader($name)) {
+            return $default;
+        }
+        return $this->decoratedResponse->getHeaderLine($name);
+    }
+}

vendor/zendframework/zend-feed/src/Reader/Http/Response.php

@@ -0,0 +1,175 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Http;
+
+use Zend\Feed\Reader\Exception;
+
+class Response implements HeaderAwareResponseInterface
+{
+    /**
+     * @var string
+     */
+    private $body;
+
+    /**
+     * @var array
+     */
+    private $headers;
+
+    /**
+     * @var int
+     */
+    private $statusCode;
+
+    /**
+     * @param int $statusCode
+     * @param string|object $body
+     * @param array $headers
+     * @throws Exception\InvalidArgumentException
+     */
+    public function __construct($statusCode, $body = '', array $headers = [])
+    {
+        $this->validateStatusCode($statusCode);
+        $this->validateBody($body);
+        $this->validateHeaders($headers);
+
+        $this->statusCode = (int) $statusCode;
+        $this->body       = (string) $body;
+        $this->headers    = $this->normalizeHeaders($headers);
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getStatusCode()
+    {
+        return $this->statusCode;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getBody()
+    {
+        return $this->body;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function getHeaderLine($name, $default = null)
+    {
+        $normalizedName = strtolower($name);
+        return isset($this->headers[$normalizedName])
+            ? $this->headers[$normalizedName]
+            : $default;
+    }
+
+    /**
+     * Validate that we have a status code argument that will work for our context.
+     *
+     * @param int $statusCode
+     * @throws Exception\InvalidArgumentException for arguments not castable
+     *     to integer HTTP status codes.
+     */
+    private function validateStatusCode($statusCode)
+    {
+        if (! is_numeric($statusCode)) {
+            throw new Exception\InvalidArgumentException(sprintf(
+                '%s expects a numeric status code; received %s',
+                __CLASS__,
+                (is_object($statusCode) ? get_class($statusCode) : gettype($statusCode))
+            ));
+        }
+
+        if (100 > $statusCode || 599 < $statusCode) {
+            throw new Exception\InvalidArgumentException(sprintf(
+                '%s expects an integer status code between 100 and 599 inclusive; received %s',
+                __CLASS__,
+                $statusCode
+            ));
+        }
+
+        if (intval($statusCode) != $statusCode) {
+            throw new Exception\InvalidArgumentException(sprintf(
+                '%s expects an integer status code; received %s',
+                __CLASS__,
+                $statusCode
+            ));
+        }
+    }
+
+    /**
+     * Validate that we have a body argument that will work for our context.
+     *
+     * @param mixed $body
+     * @throws Exception\InvalidArgumentException for arguments not castable
+     *     to strings.
+     */
+    private function validateBody($body)
+    {
+        if (is_string($body)) {
+            return;
+        }
+
+        if (is_object($body) && method_exists($body, '__toString')) {
+            return;
+        }
+
+        throw new Exception\InvalidArgumentException(sprintf(
+            '%s expects a string body, or an object that can cast to string; received %s',
+            __CLASS__,
+            (is_object($body) ? get_class($body) : gettype($body))
+        ));
+    }
+
+    /**
+     * Validate header values.
+     *
+     * @param array $headers
+     * @throws Exception\InvalidArgumentException
+     */
+    private function validateHeaders(array $headers)
+    {
+        foreach ($headers as $name => $value) {
+            if (! is_string($name) || is_numeric($name) || empty($name)) {
+                throw new Exception\InvalidArgumentException(sprintf(
+                    'Header names provided to %s must be non-empty, non-numeric strings; received %s',
+                    __CLASS__,
+                    $name
+                ));
+            }
+
+            if (! is_string($value) && ! is_numeric($value)) {
+                throw new Exception\InvalidArgumentException(sprintf(
+                    'Individual header values provided to %s must be a string or numeric; received %s for header %s',
+                    __CLASS__,
+                    (is_object($value) ? get_class($value) : gettype($value)),
+                    $name
+                ));
+            }
+        }
+    }
+
+    /**
+     * Normalize header names to lowercase.
+     *
+     * @param array $headers
+     * @return array
+     */
+    private function normalizeHeaders(array $headers)
+    {
+        $normalized = [];
+        foreach ($headers as $name => $value) {
+            $normalized[strtolower($name)] = $value;
+        }
+        return $normalized;
+    }
+}

vendor/zendframework/zend-feed/src/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) 2005-2015 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();
+}

vendor/zendframework/zend-feed/src/Reader/Http/ZendHttpClientDecorator.php

@@ -0,0 +1,118 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader\Http;
+
+use Zend\Feed\Reader\Exception;
+use Zend\Http\Client as ZendHttpClient;
+use Zend\Http\Headers;
+
+class ZendHttpClientDecorator implements HeaderAwareClientInterface
+{
+    /**
+     * @var ZendHttpClient
+     */
+    private $client;
+
+    /**
+     * @param ZendHttpClient $client
+     */
+    public function __construct(ZendHttpClient $client)
+    {
+        $this->client = $client;
+    }
+
+    /**
+     * @return ZendHttpClient
+     */
+    public function getDecoratedClient()
+    {
+        return $this->client;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    public function get($uri, array $headers = [])
+    {
+        $this->client->resetParameters();
+        $this->client->setMethod('GET');
+        $this->client->setHeaders(new Headers());
+        $this->client->setUri($uri);
+        if (! empty($headers)) {
+            $this->injectHeaders($headers);
+        }
+        $response = $this->client->send();
+
+        return new Response(
+            $response->getStatusCode(),
+            $response->getBody(),
+            $this->prepareResponseHeaders($response->getHeaders())
+        );
+    }
+
+    /**
+     * Inject header values into the client.
+     *
+     * @param array $headerValues
+     */
+    private function injectHeaders(array $headerValues)
+    {
+        $headers = $this->client->getRequest()->getHeaders();
+        foreach ($headerValues as $name => $values) {
+            if (! is_string($name) || is_numeric($name) || empty($name)) {
+                throw new Exception\InvalidArgumentException(sprintf(
+                    'Header names provided to %s::get must be non-empty, non-numeric strings; received %s',
+                    __CLASS__,
+                    $name
+                ));
+            }
+
+            if (! is_array($values)) {
+                throw new Exception\InvalidArgumentException(sprintf(
+                    'Header values provided to %s::get must be arrays of values; received %s',
+                    __CLASS__,
+                    (is_object($values) ? get_class($values) : gettype($values))
+                ));
+            }
+
+            foreach ($values as $value) {
+                if (! is_string($value) && ! is_numeric($value)) {
+                    throw new Exception\InvalidArgumentException(sprintf(
+                        'Individual header values provided to %s::get must be strings or numbers; '
+                        . 'received %s for header %s',
+                        __CLASS__,
+                        (is_object($value) ? get_class($value) : gettype($value)),
+                        $name
+                    ));
+                }
+
+                $headers->addHeaderLine($name, $value);
+            }
+        }
+    }
+
+    /**
+     * Normalize headers to use with HeaderAwareResponseInterface.
+     *
+     * Ensures multi-value headers are represented as a single string, via
+     * comma concatenation.
+     *
+     * @param Headers $headers
+     * @return array
+     */
+    private function prepareResponseHeaders(Headers $headers)
+    {
+        $normalized = [];
+        foreach ($headers->toArray() as $name => $value) {
+            $normalized[$name] = is_array($value) ? implode(', ', $value) : $value;
+        }
+        return $normalized;
+    }
+}

vendor/zendframework/zend-feed/src/Reader/Reader.php

@@ -0,0 +1,736 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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\Feed\Reader\Exception\InvalidHttpClientException;
+use Zend\Http as ZendHttp;
+use Zend\Stdlib\ErrorHandler;
+
+/**
+*/
+class Reader implements ReaderImportInterface
+{
+    /**
+     * 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 Http\ClientInterface
+     */
+    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 $extensions = [
+        'feed' => [
+            'DublinCore\Feed',
+            'Atom\Feed'
+        ],
+        'entry' => [
+            'Content\Entry',
+            'DublinCore\Entry',
+            'Atom\Entry'
+        ],
+        'core' => [
+            'DublinCore\Feed',
+            'Atom\Feed',
+            'Content\Entry',
+            'DublinCore\Entry',
+            'Atom\Entry'
+        ]
+    ];
+
+    /**
+     * Get the Feed cache
+     *
+     * @return CacheStorage
+     */
+    public static function getCache()
+    {
+        return static::$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 | Http\ClientInterface $httpClient
+     * @return void
+     */
+    public static function setHttpClient($httpClient)
+    {
+        if ($httpClient instanceof ZendHttp\Client) {
+            $httpClient = new Http\ZendHttpClientDecorator($httpClient);
+        }
+
+        if (! $httpClient instanceof Http\ClientInterface) {
+            throw new InvalidHttpClientException();
+        }
+        static::$httpClient = $httpClient;
+    }
+
+    /**
+     * Gets the HTTP client object. If none is set, a new ZendHttp\Client will be used.
+     *
+     * @return Http\ClientInterface
+     */
+    public static function getHttpClient()
+    {
+        if (! static::$httpClient) {
+            static::$httpClient = new Http\ZendHttpClientDecorator(new ZendHttp\Client());
+        }
+
+        return static::$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();
+        $client  = self::getHttpClient();
+        $cacheId = 'Zend_Feed_Reader_' . md5($uri);
+
+        if (static::$httpConditionalGet && $cache) {
+            $headers = [];
+            $data    = $cache->getItem($cacheId);
+            if ($data && $client instanceof Http\HeaderAwareClientInterface) {
+                // Only check for ETag and last modified values in the cache
+                // if we have a client capable of emitting headers in the first place.
+                if ($etag === null) {
+                    $etag = $cache->getItem($cacheId . '_etag');
+                }
+                if ($lastModified === null) {
+                    $lastModified = $cache->getItem($cacheId . '_lastmodified');
+                }
+                if ($etag) {
+                    $headers['If-None-Match'] = [$etag];
+                }
+                if ($lastModified) {
+                    $headers['If-Modified-Since'] = [$lastModified];
+                }
+            }
+            $response = $client->get($uri, $headers);
+            if ($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 instanceof Http\HeaderAwareResponseInterface) {
+                    if ($response->getHeaderLine('ETag', false)) {
+                        $cache->setItem($cacheId . '_etag', $response->getHeaderLine('ETag'));
+                    }
+                    if ($response->getHeaderLine('Last-Modified', false)) {
+                        $cache->setItem($cacheId . '_lastmodified', $response->getHeaderLine('Last-Modified'));
+                    }
+                }
+            }
+            return static::importString($responseXml);
+        } elseif ($cache) {
+            $data = $cache->getItem($cacheId);
+            if ($data) {
+                return static::importString($data);
+            }
+            $response = $client->get($uri);
+            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 = $client->get($uri);
+            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 $client
+     * @return Feed\FeedInterface
+     * @throws Exception\RuntimeException if response is not an Http\ResponseInterface
+     */
+    public static function importRemoteFeed($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 (0 === strpos($type, 'rss')) {
+            $reader = new Feed\Rss($dom, $type);
+        } elseif (8 === strpos($type, 'entry')) {
+            $reader = new Entry\Atom($dom->documentElement, 0, self::TYPE_ATOM_10);
+        } elseif (0 === strpos($type, '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();
+        $response = $client->get($uri);
+        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 StandaloneExtensionManager());
+        }
+        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)
+    {
+        if (! static::hasExtension($name)) {
+            throw new Exception\RuntimeException(sprintf(
+                'Could not load extension "%s" using Plugin Loader.'
+                . ' Check prefix paths are configured and extension exists.',
+                $name
+            ));
+        }
+
+        // Return early if already registered.
+        if (static::isRegistered($name)) {
+            return;
+        }
+
+        $manager   = static::getExtensionManager();
+
+        $feedName = $name . '\Feed';
+        if ($manager->has($feedName)) {
+            static::$extensions['feed'][] = $feedName;
+        }
+
+        $entryName = $name . '\Entry';
+        if ($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         = [
+            'feed' => [
+                'DublinCore\Feed',
+                'Atom\Feed'
+            ],
+            'entry' => [
+                'Content\Entry',
+                'DublinCore\Entry',
+                'Atom\Entry'
+            ],
+            'core' => [
+                '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');
+
+        // Added in 2.10.0; check for it conditionally
+        static::hasExtension('GooglePlayPodcast')
+            ? static::registerExtension('GooglePlayPodcast')
+            : trigger_error(
+                sprintf(
+                    'Please update your %1$s\ExtensionManagerInterface implementation to add entries for'
+                    . ' %1$s\Extension\GooglePlayPodcast\Entry and %1$s\Extension\GooglePlayPodcast\Feed.',
+                    __NAMESPACE__
+                ),
+                \E_USER_NOTICE
+            );
+    }
+
+    /**
+     * 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;
+    }
+
+    /**
+     * Does the extension manager have the named extension?
+     *
+     * This method exists to allow us to test if an extension is present in the
+     * extension manager. It may be used by registerExtension() to determine if
+     * the extension has items present in the manager, or by
+     * registerCoreExtension() to determine if the core extension has entries
+     * in the extension manager. In the latter case, this can be useful when
+     * adding new extensions in a minor release, as custom extension manager
+     * implementations may not yet have an entry for the extension, which would
+     * then otherwise cause registerExtension() to fail.
+     *
+     * @param string $name
+     * @return bool
+     */
+    protected static function hasExtension($name)
+    {
+        $feedName  = $name . '\Feed';
+        $entryName = $name . '\Entry';
+        $manager   = static::getExtensionManager();
+
+        return $manager->has($feedName) || $manager->has($entryName);
+    }
+}

vendor/zendframework/zend-feed/src/Reader/ReaderImportInterface.php

@@ -0,0 +1,62 @@
+<?php
+
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+
+namespace Zend\Feed\Reader;
+
+interface ReaderImportInterface
+{
+    /**
+     * 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);
+
+    /**
+     * 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);
+
+
+    /**
+     * Import a feed from a string
+     *
+     * @param  string $string
+     * @return Feed\FeedInterface
+     * @throws Exception\InvalidArgumentException
+     * @throws Exception\RuntimeException
+     */
+    public static function importString($string);
+
+
+    /**
+     * Imports a feed from a file located at $filename.
+     *
+     * @param  string $filename
+     * @throws Exception\RuntimeException
+     * @return Feed\FeedInterface
+     */
+    public static function importFile($filename);
+}

vendor/zendframework/zend-feed/src/Reader/StandaloneExtensionManager.php

@@ -0,0 +1,92 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2015 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\Feed\Reader\Exception\InvalidArgumentException;
+
+class StandaloneExtensionManager implements ExtensionManagerInterface
+{
+    private $extensions = [
+        'Atom\Entry'            => Extension\Atom\Entry::class,
+        'Atom\Feed'             => Extension\Atom\Feed::class,
+        'Content\Entry'         => Extension\Content\Entry::class,
+        'CreativeCommons\Entry' => Extension\CreativeCommons\Entry::class,
+        'CreativeCommons\Feed'  => Extension\CreativeCommons\Feed::class,
+        'DublinCore\Entry'      => Extension\DublinCore\Entry::class,
+        'DublinCore\Feed'       => Extension\DublinCore\Feed::class,
+        'GooglePlayPodcast\Entry' => Extension\GooglePlayPodcast\Entry::class,
+        'GooglePlayPodcast\Feed'  => Extension\GooglePlayPodcast\Feed::class,
+        'Podcast\Entry'         => Extension\Podcast\Entry::class,
+        'Podcast\Feed'          => Extension\Podcast\Feed::class,
+        'Slash\Entry'           => Extension\Slash\Entry::class,
+        'Syndication\Feed'      => Extension\Syndication\Feed::class,
+        'Thread\Entry'          => Extension\Thread\Entry::class,
+        'WellFormedWeb\Entry'   => Extension\WellFormedWeb\Entry::class,
+    ];
+
+    /**
+     * Do we have the extension?
+     *
+     * @param  string $extension
+     * @return bool
+     */
+    public function has($extension)
+    {
+        return array_key_exists($extension, $this->extensions);
+    }
+
+    /**
+     * Retrieve the extension
+     *
+     * @param  string $extension
+     * @return Extension\AbstractEntry|Extension\AbstractFeed
+     */
+    public function get($extension)
+    {
+        $class = $this->extensions[$extension];
+        return new $class();
+    }
+
+    /**
+     * Add an extension.
+     *
+     * @param string $name
+     * @param string $class
+     */
+    public function add($name, $class)
+    {
+        if (is_string($class)
+            && (
+                is_a($class, Extension\AbstractEntry::class, true)
+                || is_a($class, Extension\AbstractFeed::class, true)
+            )
+        ) {
+            $this->extensions[$name] = $class;
+            return;
+        }
+
+        throw new InvalidArgumentException(sprintf(
+            'Plugin of type %s is invalid; must implement %2$s\Extension\AbstractFeed '
+            . 'or %2$s\Extension\AbstractEntry',
+            $class,
+            __NAMESPACE__
+        ));
+    }
+
+    /**
+     * Remove an extension.
+     *
+     * @param string $name
+     */
+    public function remove($name)
+    {
+        unset($this->extensions[$name]);
+    }
+}