Chris@0: <?php
Chris@0: /**
Chris@0:  * Zend Framework (http://framework.zend.com/)
Chris@0:  *
Chris@0:  * @link      http://github.com/zendframework/zf2 for the canonical source repository
Chris@0:  * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
Chris@0:  * @license   http://framework.zend.com/license/new-bsd New BSD License
Chris@0:  */
Chris@0: 
Chris@0: namespace Zend\Feed\Writer;
Chris@0: 
Chris@0: use DateTime;
Chris@17: use DateTimeInterface;
Chris@0: use Zend\Feed\Uri;
Chris@0: 
Chris@0: /**
Chris@0: */
Chris@0: class Entry
Chris@0: {
Chris@0:     /**
Chris@0:      * Internal array containing all data associated with this entry or item.
Chris@0:      *
Chris@0:      * @var array
Chris@0:      */
Chris@0:     protected $data = [];
Chris@0: 
Chris@0:     /**
Chris@0:      * Registered extensions
Chris@0:      *
Chris@0:      * @var array
Chris@0:      */
Chris@0:     protected $extensions = [];
Chris@0: 
Chris@0:     /**
Chris@0:      * Holds the value "atom" or "rss" depending on the feed type set when
Chris@0:      * when last exported.
Chris@0:      *
Chris@0:      * @var string
Chris@0:      */
Chris@0:     protected $type = null;
Chris@0: 
Chris@0:     /**
Chris@0:      * Constructor: Primarily triggers the registration of core extensions and
Chris@0:      * loads those appropriate to this data container.
Chris@0:      *
Chris@0:      */
Chris@0:     public function __construct()
Chris@0:     {
Chris@0:         Writer::registerCoreExtensions();
Chris@0:         $this->_loadExtensions();
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Set a single author
Chris@0:      *
Chris@0:      * The following option keys are supported:
Chris@0:      * 'name'  => (string) The name
Chris@0:      * 'email' => (string) An optional email
Chris@0:      * 'uri'   => (string) An optional and valid URI
Chris@0:      *
Chris@0:      * @param array $author
Chris@0:      * @throws Exception\InvalidArgumentException If any value of $author not follow the format.
Chris@0:      * @return Entry
Chris@0:      */
Chris@0:     public function addAuthor(array $author)
Chris@0:     {
Chris@0:         // Check array values
Chris@12:         if (! array_key_exists('name', $author)
Chris@0:             || empty($author['name'])
Chris@12:             || ! is_string($author['name'])
Chris@0:         ) {
Chris@0:             throw new Exception\InvalidArgumentException(
Chris@12:                 'Invalid parameter: author array must include a "name" key with a non-empty string value'
Chris@12:             );
Chris@0:         }
Chris@0: 
Chris@0:         if (isset($author['email'])) {
Chris@12:             if (empty($author['email']) || ! is_string($author['email'])) {
Chris@0:                 throw new Exception\InvalidArgumentException(
Chris@12:                     'Invalid parameter: "email" array value must be a non-empty string'
Chris@12:                 );
Chris@0:             }
Chris@0:         }
Chris@0:         if (isset($author['uri'])) {
Chris@12:             if (empty($author['uri']) || ! is_string($author['uri']) ||
Chris@12:                 ! Uri::factory($author['uri'])->isValid()
Chris@0:             ) {
Chris@0:                 throw new Exception\InvalidArgumentException(
Chris@12:                     'Invalid parameter: "uri" array value must be a non-empty string and valid URI/IRI'
Chris@12:                 );
Chris@0:             }
Chris@0:         }
Chris@0: 
Chris@0:         $this->data['authors'][] = $author;
Chris@0: 
Chris@0:         return $this;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Set an array with feed authors
Chris@0:      *
Chris@0:      * @see addAuthor
Chris@0:      * @param array $authors
Chris@0:      * @return Entry
Chris@0:      */
Chris@0:     public function addAuthors(array $authors)
Chris@0:     {
Chris@0:         foreach ($authors as $author) {
Chris@0:             $this->addAuthor($author);
Chris@0:         }
Chris@0: 
Chris@0:         return $this;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Set the feed character encoding
Chris@0:      *
Chris@0:      * @param string $encoding
Chris@0:      * @throws Exception\InvalidArgumentException
Chris@0:      * @return Entry
Chris@0:      */
Chris@0:     public function setEncoding($encoding)
Chris@0:     {
Chris@12:         if (empty($encoding) || ! is_string($encoding)) {
Chris@0:             throw new Exception\InvalidArgumentException('Invalid parameter: parameter must be a non-empty string');
Chris@0:         }
Chris@0:         $this->data['encoding'] = $encoding;
Chris@0: 
Chris@0:         return $this;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Get the feed character encoding
Chris@0:      *
Chris@0:      * @return string|null
Chris@0:      */
Chris@0:     public function getEncoding()
Chris@0:     {
Chris@12:         if (! array_key_exists('encoding', $this->data)) {
Chris@0:             return 'UTF-8';
Chris@0:         }
Chris@0:         return $this->data['encoding'];
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Set the copyright entry
Chris@0:      *
Chris@0:      * @param string $copyright
Chris@0:      * @throws Exception\InvalidArgumentException
Chris@0:      * @return Entry
Chris@0:      */
Chris@0:     public function setCopyright($copyright)
Chris@0:     {
Chris@12:         if (empty($copyright) || ! is_string($copyright)) {
Chris@0:             throw new Exception\InvalidArgumentException('Invalid parameter: parameter must be a non-empty string');
Chris@0:         }
Chris@0:         $this->data['copyright'] = $copyright;
Chris@0: 
Chris@0:         return $this;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Set the entry's content
Chris@0:      *
Chris@0:      * @param string $content
Chris@0:      * @throws Exception\InvalidArgumentException
Chris@0:      * @return Entry
Chris@0:      */
Chris@0:     public function setContent($content)
Chris@0:     {
Chris@12:         if (empty($content) || ! is_string($content)) {
Chris@0:             throw new Exception\InvalidArgumentException('Invalid parameter: parameter must be a non-empty string');
Chris@0:         }
Chris@0:         $this->data['content'] = $content;
Chris@0: 
Chris@0:         return $this;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Set the feed creation date
Chris@0:      *
Chris@17:      * @param null|int|DateTimeInterface $date
Chris@0:      * @throws Exception\InvalidArgumentException
Chris@0:      * @return Entry
Chris@0:      */
Chris@0:     public function setDateCreated($date = null)
Chris@0:     {
Chris@0:         if ($date === null) {
Chris@0:             $date = new DateTime();
Chris@17:         }
Chris@17:         if (is_int($date)) {
Chris@0:             $date = new DateTime('@' . $date);
Chris@17:         }
Chris@17:         if (! $date instanceof DateTimeInterface) {
Chris@12:             throw new Exception\InvalidArgumentException(
Chris@12:                 'Invalid DateTime object or UNIX Timestamp passed as parameter'
Chris@12:             );
Chris@0:         }
Chris@0:         $this->data['dateCreated'] = $date;
Chris@0: 
Chris@0:         return $this;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Set the feed modification date
Chris@0:      *
Chris@17:      * @param null|int|DateTimeInterface $date
Chris@0:      * @throws Exception\InvalidArgumentException
Chris@0:      * @return Entry
Chris@0:      */
Chris@0:     public function setDateModified($date = null)
Chris@0:     {
Chris@0:         if ($date === null) {
Chris@0:             $date = new DateTime();
Chris@17:         }
Chris@17:         if (is_int($date)) {
Chris@0:             $date = new DateTime('@' . $date);
Chris@17:         }
Chris@17:         if (! $date instanceof DateTimeInterface) {
Chris@12:             throw new Exception\InvalidArgumentException(
Chris@12:                 'Invalid DateTime object or UNIX Timestamp passed as parameter'
Chris@12:             );
Chris@0:         }
Chris@0:         $this->data['dateModified'] = $date;
Chris@0: 
Chris@0:         return $this;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Set the feed description
Chris@0:      *
Chris@0:      * @param string $description
Chris@0:      * @throws Exception\InvalidArgumentException
Chris@0:      * @return Entry
Chris@0:      */
Chris@0:     public function setDescription($description)
Chris@0:     {
Chris@12:         if (empty($description) || ! is_string($description)) {
Chris@0:             throw new Exception\InvalidArgumentException('Invalid parameter: parameter must be a non-empty string');
Chris@0:         }
Chris@0:         $this->data['description'] = $description;
Chris@0: 
Chris@0:         return $this;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Set the feed ID
Chris@0:      *
Chris@0:      * @param string $id
Chris@0:      * @throws Exception\InvalidArgumentException
Chris@0:      * @return Entry
Chris@0:      */
Chris@0:     public function setId($id)
Chris@0:     {
Chris@12:         if (empty($id) || ! is_string($id)) {
Chris@0:             throw new Exception\InvalidArgumentException('Invalid parameter: parameter must be a non-empty string');
Chris@0:         }
Chris@0:         $this->data['id'] = $id;
Chris@0: 
Chris@0:         return $this;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Set a link to the HTML source of this entry
Chris@0:      *
Chris@0:      * @param string $link
Chris@0:      * @throws Exception\InvalidArgumentException
Chris@0:      * @return Entry
Chris@0:      */
Chris@0:     public function setLink($link)
Chris@0:     {
Chris@12:         if (empty($link) || ! is_string($link) || ! Uri::factory($link)->isValid()) {
Chris@12:             throw new Exception\InvalidArgumentException(
Chris@12:                 'Invalid parameter: parameter must be a non-empty string and valid URI/IRI'
Chris@12:             );
Chris@0:         }
Chris@0:         $this->data['link'] = $link;
Chris@0: 
Chris@0:         return $this;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Set the number of comments associated with this entry
Chris@0:      *
Chris@0:      * @param int $count
Chris@0:      * @throws Exception\InvalidArgumentException
Chris@0:      * @return Entry
Chris@0:      */
Chris@0:     public function setCommentCount($count)
Chris@0:     {
Chris@12:         if (! is_numeric($count) || (int) $count != $count || (int) $count < 0) {
Chris@12:             throw new Exception\InvalidArgumentException(
Chris@12:                 'Invalid parameter: "count" must be a positive integer number or zero'
Chris@12:             );
Chris@0:         }
Chris@0:         $this->data['commentCount'] = (int) $count;
Chris@0: 
Chris@0:         return $this;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Set a link to a HTML page containing comments associated with this entry
Chris@0:      *
Chris@0:      * @param string $link
Chris@0:      * @throws Exception\InvalidArgumentException
Chris@0:      * @return Entry
Chris@0:      */
Chris@0:     public function setCommentLink($link)
Chris@0:     {
Chris@12:         if (empty($link) || ! is_string($link) || ! Uri::factory($link)->isValid()) {
Chris@12:             throw new Exception\InvalidArgumentException(
Chris@12:                 'Invalid parameter: "link" must be a non-empty string and valid URI/IRI'
Chris@12:             );
Chris@0:         }
Chris@0:         $this->data['commentLink'] = $link;
Chris@0: 
Chris@0:         return $this;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Set a link to an XML feed for any comments associated with this entry
Chris@0:      *
Chris@0:      * @param array $link
Chris@0:      * @throws Exception\InvalidArgumentException
Chris@0:      * @return Entry
Chris@0:      */
Chris@0:     public function setCommentFeedLink(array $link)
Chris@0:     {
Chris@12:         if (! isset($link['uri']) || ! is_string($link['uri']) || ! Uri::factory($link['uri'])->isValid()) {
Chris@12:             throw new Exception\InvalidArgumentException(
Chris@12:                 'Invalid parameter: "link" must be a non-empty string and valid URI/IRI'
Chris@12:             );
Chris@0:         }
Chris@12:         if (! isset($link['type']) || ! in_array($link['type'], ['atom', 'rss', 'rdf'])) {
Chris@0:             throw new Exception\InvalidArgumentException('Invalid parameter: "type" must be one'
Chris@0:             . ' of "atom", "rss" or "rdf"');
Chris@0:         }
Chris@12:         if (! isset($this->data['commentFeedLinks'])) {
Chris@0:             $this->data['commentFeedLinks'] = [];
Chris@0:         }
Chris@0:         $this->data['commentFeedLinks'][] = $link;
Chris@0: 
Chris@0:         return $this;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Set a links to an XML feed for any comments associated with this entry.
Chris@0:      * Each link is an array with keys "uri" and "type", where type is one of:
Chris@0:      * "atom", "rss" or "rdf".
Chris@0:      *
Chris@0:      * @param array $links
Chris@0:      * @return Entry
Chris@0:      */
Chris@0:     public function setCommentFeedLinks(array $links)
Chris@0:     {
Chris@0:         foreach ($links as $link) {
Chris@0:             $this->setCommentFeedLink($link);
Chris@0:         }
Chris@0: 
Chris@0:         return $this;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Set the feed title
Chris@0:      *
Chris@0:      * @param string $title
Chris@0:      * @throws Exception\InvalidArgumentException
Chris@0:      * @return Entry
Chris@0:      */
Chris@0:     public function setTitle($title)
Chris@0:     {
Chris@16:         if ((empty($title) && ! is_numeric($title)) || ! is_string($title)) {
Chris@0:             throw new Exception\InvalidArgumentException('Invalid parameter: parameter must be a non-empty string');
Chris@0:         }
Chris@0:         $this->data['title'] = $title;
Chris@0: 
Chris@0:         return $this;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Get an array with feed authors
Chris@0:      *
Chris@0:      * @return array
Chris@0:      */
Chris@0:     public function getAuthors()
Chris@0:     {
Chris@12:         if (! array_key_exists('authors', $this->data)) {
Chris@0:             return;
Chris@0:         }
Chris@0:         return $this->data['authors'];
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Get the entry content
Chris@0:      *
Chris@0:      * @return string
Chris@0:      */
Chris@0:     public function getContent()
Chris@0:     {
Chris@12:         if (! array_key_exists('content', $this->data)) {
Chris@0:             return;
Chris@0:         }
Chris@0:         return $this->data['content'];
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Get the entry copyright information
Chris@0:      *
Chris@0:      * @return string
Chris@0:      */
Chris@0:     public function getCopyright()
Chris@0:     {
Chris@12:         if (! array_key_exists('copyright', $this->data)) {
Chris@0:             return;
Chris@0:         }
Chris@0:         return $this->data['copyright'];
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Get the entry creation date
Chris@0:      *
Chris@0:      * @return string
Chris@0:      */
Chris@0:     public function getDateCreated()
Chris@0:     {
Chris@12:         if (! array_key_exists('dateCreated', $this->data)) {
Chris@0:             return;
Chris@0:         }
Chris@0:         return $this->data['dateCreated'];
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Get the entry modification date
Chris@0:      *
Chris@0:      * @return string
Chris@0:      */
Chris@0:     public function getDateModified()
Chris@0:     {
Chris@12:         if (! array_key_exists('dateModified', $this->data)) {
Chris@0:             return;
Chris@0:         }
Chris@0:         return $this->data['dateModified'];
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Get the entry description
Chris@0:      *
Chris@0:      * @return string
Chris@0:      */
Chris@0:     public function getDescription()
Chris@0:     {
Chris@12:         if (! array_key_exists('description', $this->data)) {
Chris@0:             return;
Chris@0:         }
Chris@0:         return $this->data['description'];
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Get the entry ID
Chris@0:      *
Chris@0:      * @return string
Chris@0:      */
Chris@0:     public function getId()
Chris@0:     {
Chris@12:         if (! array_key_exists('id', $this->data)) {
Chris@0:             return;
Chris@0:         }
Chris@0:         return $this->data['id'];
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Get a link to the HTML source
Chris@0:      *
Chris@0:      * @return string|null
Chris@0:      */
Chris@0:     public function getLink()
Chris@0:     {
Chris@12:         if (! array_key_exists('link', $this->data)) {
Chris@0:             return;
Chris@0:         }
Chris@0:         return $this->data['link'];
Chris@0:     }
Chris@0: 
Chris@0: 
Chris@0:     /**
Chris@0:      * Get all links
Chris@0:      *
Chris@0:      * @return array
Chris@0:      */
Chris@0:     public function getLinks()
Chris@0:     {
Chris@12:         if (! array_key_exists('links', $this->data)) {
Chris@0:             return;
Chris@0:         }
Chris@0:         return $this->data['links'];
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Get the entry title
Chris@0:      *
Chris@0:      * @return string
Chris@0:      */
Chris@0:     public function getTitle()
Chris@0:     {
Chris@12:         if (! array_key_exists('title', $this->data)) {
Chris@0:             return;
Chris@0:         }
Chris@0:         return $this->data['title'];
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Get the number of comments/replies for current entry
Chris@0:      *
Chris@0:      * @return int
Chris@0:      */
Chris@0:     public function getCommentCount()
Chris@0:     {
Chris@12:         if (! array_key_exists('commentCount', $this->data)) {
Chris@0:             return;
Chris@0:         }
Chris@0:         return $this->data['commentCount'];
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Returns a URI pointing to the HTML page where comments can be made on this entry
Chris@0:      *
Chris@0:      * @return string
Chris@0:      */
Chris@0:     public function getCommentLink()
Chris@0:     {
Chris@12:         if (! array_key_exists('commentLink', $this->data)) {
Chris@0:             return;
Chris@0:         }
Chris@0:         return $this->data['commentLink'];
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Returns an array of URIs pointing to a feed of all comments for this entry
Chris@0:      * where the array keys indicate the feed type (atom, rss or rdf).
Chris@0:      *
Chris@0:      * @return string
Chris@0:      */
Chris@0:     public function getCommentFeedLinks()
Chris@0:     {
Chris@12:         if (! array_key_exists('commentFeedLinks', $this->data)) {
Chris@0:             return;
Chris@0:         }
Chris@0:         return $this->data['commentFeedLinks'];
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Add an entry category
Chris@0:      *
Chris@0:      * @param array $category
Chris@0:      * @throws Exception\InvalidArgumentException
Chris@0:      * @return Entry
Chris@0:      */
Chris@0:     public function addCategory(array $category)
Chris@0:     {
Chris@12:         if (! isset($category['term'])) {
Chris@0:             throw new Exception\InvalidArgumentException('Each category must be an array and '
Chris@0:             . 'contain at least a "term" element containing the machine '
Chris@0:             . ' readable category name');
Chris@0:         }
Chris@0:         if (isset($category['scheme'])) {
Chris@0:             if (empty($category['scheme'])
Chris@12:                 || ! is_string($category['scheme'])
Chris@12:                 || ! Uri::factory($category['scheme'])->isValid()
Chris@0:             ) {
Chris@0:                 throw new Exception\InvalidArgumentException('The Atom scheme or RSS domain of'
Chris@0:                 . ' a category must be a valid URI');
Chris@0:             }
Chris@0:         }
Chris@12:         if (! isset($this->data['categories'])) {
Chris@0:             $this->data['categories'] = [];
Chris@0:         }
Chris@0:         $this->data['categories'][] = $category;
Chris@0: 
Chris@0:         return $this;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Set an array of entry categories
Chris@0:      *
Chris@0:      * @param array $categories
Chris@0:      * @return Entry
Chris@0:      */
Chris@0:     public function addCategories(array $categories)
Chris@0:     {
Chris@0:         foreach ($categories as $category) {
Chris@0:             $this->addCategory($category);
Chris@0:         }
Chris@0: 
Chris@0:         return $this;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Get the entry categories
Chris@0:      *
Chris@0:      * @return string|null
Chris@0:      */
Chris@0:     public function getCategories()
Chris@0:     {
Chris@12:         if (! array_key_exists('categories', $this->data)) {
Chris@0:             return;
Chris@0:         }
Chris@0:         return $this->data['categories'];
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Adds an enclosure to the entry. The array parameter may contain the
Chris@0:      * keys 'uri', 'type' and 'length'. Only 'uri' is required for Atom, though the
Chris@0:      * others must also be provided or RSS rendering (where they are required)
Chris@0:      * will throw an Exception.
Chris@0:      *
Chris@0:      * @param array $enclosure
Chris@0:      * @throws Exception\InvalidArgumentException
Chris@0:      * @return Entry
Chris@0:      */
Chris@0:     public function setEnclosure(array $enclosure)
Chris@0:     {
Chris@12:         if (! isset($enclosure['uri'])) {
Chris@0:             throw new Exception\InvalidArgumentException('Enclosure "uri" is not set');
Chris@0:         }
Chris@12:         if (! Uri::factory($enclosure['uri'])->isValid()) {
Chris@0:             throw new Exception\InvalidArgumentException('Enclosure "uri" is not a valid URI/IRI');
Chris@0:         }
Chris@0:         $this->data['enclosure'] = $enclosure;
Chris@0: 
Chris@0:         return $this;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Retrieve an array of all enclosures to be added to entry.
Chris@0:      *
Chris@0:      * @return array
Chris@0:      */
Chris@0:     public function getEnclosure()
Chris@0:     {
Chris@12:         if (! array_key_exists('enclosure', $this->data)) {
Chris@0:             return;
Chris@0:         }
Chris@0:         return $this->data['enclosure'];
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Unset a specific data point
Chris@0:      *
Chris@0:      * @param string $name
Chris@0:      * @return Entry
Chris@0:      */
Chris@0:     public function remove($name)
Chris@0:     {
Chris@0:         if (isset($this->data[$name])) {
Chris@0:             unset($this->data[$name]);
Chris@0:         }
Chris@0: 
Chris@0:         return $this;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Get registered extensions
Chris@0:      *
Chris@0:      * @return array
Chris@0:      */
Chris@0:     public function getExtensions()
Chris@0:     {
Chris@0:         return $this->extensions;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Return an Extension object with the matching name (postfixed with _Entry)
Chris@0:      *
Chris@0:      * @param string $name
Chris@0:      * @return object
Chris@0:      */
Chris@0:     public function getExtension($name)
Chris@0:     {
Chris@0:         if (array_key_exists($name . '\\Entry', $this->extensions)) {
Chris@0:             return $this->extensions[$name . '\\Entry'];
Chris@0:         }
Chris@0:         return;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Set the current feed type being exported to "rss" or "atom". This allows
Chris@0:      * other objects to gracefully choose whether to execute or not, depending
Chris@0:      * on their appropriateness for the current type, e.g. renderers.
Chris@0:      *
Chris@0:      * @param string $type
Chris@0:      * @return Entry
Chris@0:      */
Chris@0:     public function setType($type)
Chris@0:     {
Chris@0:         $this->type = $type;
Chris@0:         return $this;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Retrieve the current or last feed type exported.
Chris@0:      *
Chris@0:      * @return string Value will be "rss" or "atom"
Chris@0:      */
Chris@0:     public function getType()
Chris@0:     {
Chris@0:         return $this->type;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Method overloading: call given method on first extension implementing it
Chris@0:      *
Chris@0:      * @param  string $method
Chris@0:      * @param  array $args
Chris@0:      * @return mixed
Chris@0:      * @throws Exception\BadMethodCallException if no extensions implements the method
Chris@0:      */
Chris@0:     public function __call($method, $args)
Chris@0:     {
Chris@0:         foreach ($this->extensions as $extension) {
Chris@0:             try {
Chris@0:                 return call_user_func_array([$extension, $method], $args);
Chris@0:             } catch (\BadMethodCallException $e) {
Chris@0:             }
Chris@0:         }
Chris@0:         throw new Exception\BadMethodCallException('Method: ' . $method
Chris@0:             . ' does not exist and could not be located on a registered Extension');
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Creates a new Zend\Feed\Writer\Source data container for use. This is NOT
Chris@0:      * added to the current feed automatically, but is necessary to create a
Chris@0:      * container with some initial values preset based on the current feed data.
Chris@0:      *
Chris@0:      * @return Source
Chris@0:      */
Chris@0:     public function createSource()
Chris@0:     {
Chris@0:         $source = new Source;
Chris@0:         if ($this->getEncoding()) {
Chris@0:             $source->setEncoding($this->getEncoding());
Chris@0:         }
Chris@0:         $source->setType($this->getType());
Chris@0:         return $source;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Appends a Zend\Feed\Writer\Entry object representing a new entry/item
Chris@0:      * the feed data container's internal group of entries.
Chris@0:      *
Chris@0:      * @param Source $source
Chris@0:      * @return Entry
Chris@0:      */
Chris@0:     public function setSource(Source $source)
Chris@0:     {
Chris@0:         $this->data['source'] = $source;
Chris@0:         return $this;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * @return Source
Chris@0:      */
Chris@0:     public function getSource()
Chris@0:     {
Chris@0:         if (isset($this->data['source'])) {
Chris@0:             return $this->data['source'];
Chris@0:         }
Chris@0:         return;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Load extensions from Zend\Feed\Writer\Writer
Chris@0:      *
Chris@0:      * @return void
Chris@0:      */
Chris@12:     // @codingStandardsIgnoreStart
Chris@0:     protected function _loadExtensions()
Chris@0:     {
Chris@12:         // @codingStandardsIgnoreEnd
Chris@0:         $all     = Writer::getExtensions();
Chris@0:         $manager = Writer::getExtensionManager();
Chris@0:         $exts    = $all['entry'];
Chris@0:         foreach ($exts as $ext) {
Chris@0:             $this->extensions[$ext] = $manager->get($ext);
Chris@0:             $this->extensions[$ext]->setEncoding($this->getEncoding());
Chris@0:         }
Chris@0:     }
Chris@0: }