Rss.php in Zircon Profile 8

Namespace

Zend\Feed\Reader\Feed

File

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

<?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 string|null
   */
  public function getDateCreated() {
    return $this
      ->getDateModified();
  }

  /**
   * Get the feed modification date
   *
   * @return DateTime
   * @throws Exception\RuntimeException
   */
  public function getDateModified() {
    if (array_key_exists('datemodified', $this->data)) {
      return $this->data['datemodified'];
    }
    $date = null;
    if ($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;
    }
  }

}

Classes

Name	Description
Rss