<?php

/**

 * Zend Framework

 *

 * LICENSE

 *

 * This source file is subject to the new BSD license that is bundled

 * with this package in the file LICENSE.txt.

 * It is also available through the world-wide-web at this URL:

 * http://framework.zend.com/license/new-bsd

 * If you did not receive a copy of the license and are unable to

 * obtain it through the world-wide-web, please send an email

 * to license@zend.com so we can send you a copy immediately.

 *

 * @category   Zend

 * @package    Zend_Feed_Writer

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 * @version    $Id: Rss.php 22107 2010-05-05 13:42:20Z padraic $

 */

/** @see Zend_Feed_Writer_Feed */

require_once 'Zend/Feed/Writer/Feed.php';

/** @see Zend_Version */

require_once 'Zend/Version.php';

/** @see Zend_Feed_Writer_Renderer_RendererInterface */

require_once 'Zend/Feed/Writer/Renderer/RendererInterface.php';

/** @see Zend_Feed_Writer_Renderer_Entry_Rss */

require_once 'Zend/Feed/Writer/Renderer/Entry/Rss.php';

/** @see Zend_Feed_Writer_Renderer_RendererAbstract */

require_once 'Zend/Feed/Writer/Renderer/RendererAbstract.php';

/**

 * @category   Zend

 * @package    Zend_Feed_Writer

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

class Zend_Feed_Writer_Renderer_Feed_Rss

    extends Zend_Feed_Writer_Renderer_RendererAbstract

    implements Zend_Feed_Writer_Renderer_RendererInterface

{

    /**

     * Constructor

     * 

     * @param  Zend_Feed_Writer_Feed $container 

     * @return void

     */

    public function __construct (Zend_Feed_Writer_Feed $container)

    {

        parent::__construct($container);

    }

    /**

     * Render RSS feed

     * 

     * @return Zend_Feed_Writer_Renderer_Feed_Rss

     */

    public function render()

    {

        if (!$this->_container->getEncoding()) {

            $this->_container->setEncoding('UTF-8');

        }

        $this->_dom = new DOMDocument('1.0', $this->_container->getEncoding());

        $this->_dom->formatOutput = true;

        $this->_dom->substituteEntities = false;

        $rss = $this->_dom->createElement('rss');

        $this->setRootElement($rss);

        $rss->setAttribute('version', '2.0');

        $channel = $this->_dom->createElement('channel');

        $rss->appendChild($channel);

        $this->_dom->appendChild($rss);

        $this->_setLanguage($this->_dom, $channel);

        $this->_setBaseUrl($this->_dom, $channel);

        $this->_setTitle($this->_dom, $channel);

        $this->_setDescription($this->_dom, $channel);

        $this->_setImage($this->_dom, $channel);

        $this->_setDateCreated($this->_dom, $channel);

        $this->_setDateModified($this->_dom, $channel);

        $this->_setLastBuildDate($this->_dom, $channel);

        $this->_setGenerator($this->_dom, $channel);

        $this->_setLink($this->_dom, $channel);

        $this->_setAuthors($this->_dom, $channel);

        $this->_setCopyright($this->_dom, $channel);

        $this->_setCategories($this->_dom, $channel);

        foreach ($this->_extensions as $ext) {

            $ext->setType($this->getType());

            $ext->setRootElement($this->getRootElement());

            $ext->setDomDocument($this->getDomDocument(), $channel);

            $ext->render();

        }

        foreach ($this->_container as $entry) {

            if ($this->getDataContainer()->getEncoding()) {

                $entry->setEncoding($this->getDataContainer()->getEncoding());

            }

            if ($entry instanceof Zend_Feed_Writer_Entry) {

                $renderer = new Zend_Feed_Writer_Renderer_Entry_Rss($entry);

            } else {

                continue;

            }

            if ($this->_ignoreExceptions === true) {

                $renderer->ignoreExceptions();

            }

            $renderer->setType($this->getType());

            $renderer->setRootElement($this->_dom->documentElement);

            $renderer->render();

            $element = $renderer->getElement();

            $imported = $this->_dom->importNode($element, true);

            $channel->appendChild($imported);

        }

        return $this;

    }

    /**

     * Set feed language

     * 

     * @param DOMDocument $dom 

     * @param DOMElement $root 

     * @return void

     */

    protected function _setLanguage(DOMDocument $dom, DOMElement $root)

    {

        $lang = $this->getDataContainer()->getLanguage();

        if (!$lang) {

            return;

        }

        $language = $dom->createElement('language');

        $root->appendChild($language);

        $language->nodeValue = $lang;

    }

    /**

     * Set feed title

     * 

     * @param DOMDocument $dom 

     * @param DOMElement $root 

     * @return void

     */

    protected function _setTitle(DOMDocument $dom, DOMElement $root)

    {

        if(!$this->getDataContainer()->getTitle()) {

            require_once 'Zend/Feed/Exception.php';

            $message = 'RSS 2.0 feed elements MUST contain exactly one'

            . ' title element but a title has not been set';

            $exception = new Zend_Feed_Exception($message);

            if (!$this->_ignoreExceptions) {

                throw $exception;

            } else {

                $this->_exceptions[] = $exception;

                return;

            }

        }

        $title = $dom->createElement('title');

        $root->appendChild($title);

        $text = $dom->createTextNode($this->getDataContainer()->getTitle());

        $title->appendChild($text);

    }

    /**

     * Set feed description

     * 

     * @param DOMDocument $dom 

     * @param DOMElement $root 

     * @return void

     */

    protected function _setDescription(DOMDocument $dom, DOMElement $root)

    {

        if(!$this->getDataContainer()->getDescription()) {

            require_once 'Zend/Feed/Exception.php';

            $message = 'RSS 2.0 feed elements MUST contain exactly one'

            . ' description element but one has not been set';

            $exception = new Zend_Feed_Exception($message);

            if (!$this->_ignoreExceptions) {

                throw $exception;

            } else {

                $this->_exceptions[] = $exception;

                return;

            }

        }

        $subtitle = $dom->createElement('description');

        $root->appendChild($subtitle);

        $text = $dom->createTextNode($this->getDataContainer()->getDescription());

        $subtitle->appendChild($text);

    }

    /**

     * Set date feed was last modified

     * 

     * @param DOMDocument $dom 

     * @param DOMElement $root 

     * @return void

     */

    protected function _setDateModified(DOMDocument $dom, DOMElement $root)

    {

        if(!$this->getDataContainer()->getDateModified()) {

            return;

        }

        $updated = $dom->createElement('pubDate');

        $root->appendChild($updated);

        $text = $dom->createTextNode(

            $this->getDataContainer()->getDateModified()->get(Zend_Date::RSS)

        );

        $updated->appendChild($text);

    }

    /**

     * Set feed generator string

     * 

     * @param DOMDocument $dom 

     * @param DOMElement $root 

     * @return void

     */

    protected function _setGenerator(DOMDocument $dom, DOMElement $root)

    {

        if(!$this->getDataContainer()->getGenerator()) {

            $this->getDataContainer()->setGenerator('Zend_Feed_Writer',

                Zend_Version::VERSION, 'http://framework.zend.com');

        }

        $gdata = $this->getDataContainer()->getGenerator();

        $generator = $dom->createElement('generator');

        $root->appendChild($generator);

        $name = $gdata['name'];

        if (array_key_exists('version', $gdata)) {

            $name .= ' ' . $gdata['version'];

        }

        if (array_key_exists('uri', $gdata)) {

            $name .= ' (' . $gdata['uri'] . ')';

        }

        $text = $dom->createTextNode($name);

        $generator->appendChild($text);

    }

    /**

     * Set link to feed

     * 

     * @param DOMDocument $dom 

     * @param DOMElement $root 

     * @return void

     */

    protected function _setLink(DOMDocument $dom, DOMElement $root)

    {

        $value = $this->getDataContainer()->getLink();

        if(!$value) {

            require_once 'Zend/Feed/Exception.php';

            $message = 'RSS 2.0 feed elements MUST contain exactly one'

            . ' link element but one has not been set';

            $exception = new Zend_Feed_Exception($message);

            if (!$this->_ignoreExceptions) {

                throw $exception;

            } else {

                $this->_exceptions[] = $exception;

                return;

            }

        }

        $link = $dom->createElement('link');

        $root->appendChild($link);

        $text = $dom->createTextNode($value);

        $link->appendChild($text);

        if (!Zend_Uri::check($value)) {

            $link->setAttribute('isPermaLink', 'false');

        }

    }

    /**

     * Set feed authors

     * 

     * @param DOMDocument $dom 

     * @param DOMElement $root 

     * @return void

     */

    protected function _setAuthors(DOMDocument $dom, DOMElement $root)

    {

        $authors = $this->getDataContainer()->getAuthors();

        if (!$authors || empty($authors)) {

            return;

        }

        foreach ($authors as $data) {

            $author = $this->_dom->createElement('author');

            $name = $data['name'];

            if (array_key_exists('email', $data)) {

                $name = $data['email'] . ' (' . $data['name'] . ')';

            }

            $text = $dom->createTextNode($name);

            $author->appendChild($text);

            $root->appendChild($author);

        }

    }

    /**

     * Set feed copyright

     * 

     * @param DOMDocument $dom 

     * @param DOMElement $root 

     * @return void

     */

    protected function _setCopyright(DOMDocument $dom, DOMElement $root)

    {

        $copyright = $this->getDataContainer()->getCopyright();

        if (!$copyright) {

            return;

        }

        $copy = $dom->createElement('copyright');

        $root->appendChild($copy);

        $text = $dom->createTextNode($copyright);

        $copy->appendChild($text);

    }

    /**

     * Set feed channel image

     * 

     * @param DOMDocument $dom 

     * @param DOMElement $root 

     * @return void

     */

    protected function _setImage(DOMDocument $dom, DOMElement $root)

    {

        $image = $this->getDataContainer()->getImage();

        if (!$image) {

            return;

        }

        if (!isset($image['title']) || empty($image['title'])

        || !is_string($image['title'])) {

            require_once 'Zend/Feed/Exception.php';

            $message = 'RSS 2.0 feed images must include a title';

            $exception = new Zend_Feed_Exception($message);

            if (!$this->_ignoreExceptions) {

                throw $exception;

            } else {

                $this->_exceptions[] = $exception;

                return;

            }

        }

        if (empty($image['link']) || !is_string($image['link'])

        || !Zend_Uri::check($image['link'])) {

            require_once 'Zend/Feed/Exception.php';

            $message = 'Invalid parameter: parameter \'link\''

            . ' must be a non-empty string and valid URI/IRI';

            $exception = new Zend_Feed_Exception($message);

            if (!$this->_ignoreExceptions) {

                throw $exception;

            } else {

                $this->_exceptions[] = $exception;

                return;

            }

        }

        $img = $dom->createElement('image');

        $root->appendChild($img);

        $url = $dom->createElement('url');

        $text = $dom->createTextNode($image['uri']);

        $url->appendChild($text);

        $title = $dom->createElement('title');

        $text = $dom->createTextNode($image['title']);

        $title->appendChild($text);

        $link = $dom->createElement('link');

        $text = $dom->createTextNode($image['link']);

        $link->appendChild($text);

        $img->appendChild($url);

        $img->appendChild($title);

        $img->appendChild($link);

        if (isset($image['height'])) {

            if (!ctype_digit((string) $image['height']) || $image['height'] > 400) {

                require_once 'Zend/Feed/Exception.php';

                $message = 'Invalid parameter: parameter \'height\''

                . ' must be an integer not exceeding 400';

                $exception = new Zend_Feed_Exception($message);

                if (!$this->_ignoreExceptions) {

                    throw $exception;

                } else {

                    $this->_exceptions[] = $exception;

                    return;

                }

            }

            $height = $dom->createElement('height');

            $text = $dom->createTextNode($image['height']);

            $height->appendChild($text);

            $img->appendChild($height);

        }

        if (isset($image['width'])) {

            if (!ctype_digit((string) $image['width']) || $image['width'] > 144) {

                require_once 'Zend/Feed/Exception.php';

                $message = 'Invalid parameter: parameter \'width\''

                . ' must be an integer not exceeding 144';

                $exception = new Zend_Feed_Exception($message);

                if (!$this->_ignoreExceptions) {

                    throw $exception;

                } else {

                    $this->_exceptions[] = $exception;

                    return;

                }

            }

            $width = $dom->createElement('width');

            $text = $dom->createTextNode($image['width']);

            $width->appendChild($text);

            $img->appendChild($width);

        }

        if (isset($image['description'])) {

            if (empty($image['description']) || !is_string($image['description'])) {

                require_once 'Zend/Feed/Exception.php';

                $message = 'Invalid parameter: parameter \'description\''

                . ' must be a non-empty string';

                $exception = new Zend_Feed_Exception($message);

                if (!$this->_ignoreExceptions) {