DefaultParser.php in Drupal 9

Namespace

Drupal\aggregator\Plugin\aggregator\parser

File

core/modules/aggregator/src/Plugin/aggregator/parser/DefaultParser.php

<?php

namespace Drupal\aggregator\Plugin\aggregator\parser;

use Drupal\aggregator\Plugin\ParserInterface;
use Drupal\aggregator\FeedInterface;
use Drupal\Core\Messenger\MessengerTrait;
use Laminas\Feed\Reader\Reader;
use Laminas\Feed\Reader\Exception\ExceptionInterface;

/**
 * Defines a default parser implementation.
 *
 * Parses RSS, Atom and RDF feeds.
 *
 * @AggregatorParser(
 *   id = "aggregator",
 *   title = @Translation("Default parser"),
 *   description = @Translation("Default parser for RSS, Atom and RDF feeds.")
 * )
 */
class DefaultParser implements ParserInterface {
  use MessengerTrait;

  /**
   * {@inheritdoc}
   */
  public function parse(FeedInterface $feed) {

    // Set our bridge extension manager to Laminas Feed.
    Reader::setExtensionManager(\Drupal::service('feed.bridge.reader'));
    try {
      $channel = Reader::importString($feed->source_string);
    } catch (ExceptionInterface $e) {
      watchdog_exception('aggregator', $e);
      $this
        ->messenger()
        ->addError(t('The feed from %site seems to be broken because of error "%error".', [
        '%site' => $feed
          ->label(),
        '%error' => $e
          ->getMessage(),
      ]));
      return FALSE;
    }
    $feed
      ->setWebsiteUrl($channel
      ->getLink());
    $feed
      ->setDescription($channel
      ->getDescription());
    if ($image = $channel
      ->getImage()) {
      $feed
        ->setImage($image['uri']);
    }

    // Initialize items array.
    $feed->items = [];
    foreach ($channel as $item) {

      // Reset the parsed item.
      $parsed_item = [];

      // Move the values to an array as expected by processors.
      $parsed_item['title'] = $item
        ->getTitle();
      $parsed_item['guid'] = $item
        ->getId();
      $parsed_item['link'] = $item
        ->getLink();
      $parsed_item['description'] = $item
        ->getDescription();
      $parsed_item['author'] = '';
      if ($author = $item
        ->getAuthor()) {
        $parsed_item['author'] = $author['name'];
      }
      $parsed_item['timestamp'] = '';
      if ($date = $item
        ->getDateModified()) {
        $parsed_item['timestamp'] = $date
          ->getTimestamp();
      }

      // Store on $feed object. This is where processors will look for parsed items.
      $feed->items[] = $parsed_item;
    }
    return TRUE;
  }

}

Classes

Name	Description
DefaultParser	Defines a default parser implementation.