' . t('About') . ''; $output .= '

' . t('The Aggregator module is an on-site syndicator and news reader that gathers and displays fresh content from RSS-, RDF-, and Atom-based feeds made available across the web. Thousands of sites (particularly news sites and blogs) publish their latest headlines in feeds, using a number of standardized XML-based formats. For more information, see the online documentation for the Aggregator module.', array('!aggregator-module' => 'https://drupal.org/documentation/modules/aggregator')) . '

'; $output .= '

' . t('Uses') . '

'; $output .= '

' . t('Viewing feeds') . ': ' . t('Users view feed content in the main aggregator display, or by their source (usually via an RSS feed reader). The most recent content in a feed can be displayed as a block through the Blocks administration page.', array('!aggregator' => \Drupal::url('aggregator.page_last'), '!aggregator-sources' => $url->toString(), '!admin-block' => \Drupal::url('block.admin_display'))) . '
' . t('Adding, editing, and deleting feeds') . ': ' . t('Administrators can add, edit, and delete feeds, and choose how often to check each feed for newly updated items on the Feed aggregator administration page.', array('!feededit' => \Drupal::url('aggregator.admin_overview'))) . '
' . t('OPML integration') . ': ' . t('A machine-readable OPML file of all feeds is available. OPML is an XML-based file format used to share outline-structured information such as a list of RSS feeds. Feeds can also be imported via an OPML file.', array('!aggregator-opml' => $url->toString(), '!import-opml' => \Drupal::url('aggregator.opml_add'))) . '
' . t('Configuring cron') . ': ' . t('A working cron maintenance task is required to update feeds automatically.', array('!cron' => \Drupal::url('system.cron_settings'))) . '

'; return $output; case 'aggregator.admin_overview': // Don't use placeholders for possibility to change URLs for translators. $output = '

' . t('Many sites publish their headlines and posts in feeds, using a number of standardized XML-based formats. The aggregator supports RSS, RDF, and Atom.') . '

'; $output .= '

' . t('Current feeds are listed below, and new feeds may be added. For each feed, the latest items block may be enabled at the blocks administration page.', array('!addfeed' => \Drupal::url('aggregator.feed_add'), '!block' => \Drupal::url('block.admin_display'))) . '

'; return $output; case 'aggregator.feed_add': return '

' . t('Add a feed in RSS, RDF or Atom format. A feed may only have one entry.') . '

'; case 'aggregator.opml_add': return '

' . t('OPML is an XML format for exchanging feeds between aggregators. A single OPML document may contain many feeds. Aggregator uses this file to import all feeds at once. Upload a file from your computer or enter a URL where the OPML file can be downloaded.') . '

'; } } /** * Implements hook_theme(). */ function aggregator_theme() { return array( 'aggregator_feed' => array( 'render element' => 'elements', 'file' => 'aggregator.theme.inc', ), 'aggregator_item' => array( 'render element' => 'elements', 'file' => 'aggregator.theme.inc', ), ); } /** * Implements hook_entity_extra_field_info(). */ function aggregator_entity_extra_field_info() { $extra = array(); $extra['aggregator_feed']['aggregator_feed'] = array( 'display' => array( 'items' => array( 'label' => t('Items'), 'description' => t('Items associated with this feed'), 'weight' => 0, ), // @todo Move to a formatter at https://www.drupal.org/node/2339917. 'image' => array( 'label' => t('Image'), 'description' => t('The feed image'), 'weight' => 2, ), // @todo Move to a formatter at https://drupal.org/node/2149845. 'description' => array( 'label' => t('Description'), 'description' => t('The description of this feed'), 'weight' => 3, ), 'more_link' => array( 'label' => t('More link'), 'description' => t('A more link to the feed detail page'), 'weight' => 5, ), 'feed_icon' => array( 'label' => t('Feed icon'), 'description' => t('An icon that links to the feed url'), 'weight' => 6, ), ), ); $extra['aggregator_item']['aggregator_item'] = array( 'display' => array( // @todo Move to a formatter at https://drupal.org/node/2149845. 'description' => array( 'label' => t('Description'), 'description' => t('The description of this feed item'), 'weight' => 2, ), ), ); return $extra; } /** * Implements hook_cron(). * * Queues news feeds for updates once their refresh interval has elapsed. */ function aggregator_cron() { $queue = \Drupal::queue('aggregator_feeds'); $ids = \Drupal::entityManager()->getStorage('aggregator_feed')->getFeedIdsToRefresh(); foreach (Feed::loadMultiple($ids) as $feed) { if ($queue->createItem($feed)) { // Add timestamp to avoid queueing item more than once. $feed->setQueuedTime(REQUEST_TIME); $feed->save(); } } // Delete queued timestamp after 6 hours assuming the update has failed. $ids = \Drupal::entityQuery('aggregator_feed') ->condition('queued', REQUEST_TIME - (3600 * 6), '<') ->execute(); if ($ids) { $feeds = Feed::loadMultiple($ids); foreach ($feeds as $feed) { $feed->setQueuedTime(0); $feed->save(); } } } /** * Renders the HTML content safely, as allowed. * * @param string $value * The content to be filtered. * * @return string * The filtered content. */ function aggregator_filter_xss($value) { return Xss::filter($value, preg_split('/\s+|<|>/', \Drupal::config('aggregator.settings')->get('items.allowed_html'), -1, PREG_SPLIT_NO_EMPTY)); } /** * Implements hook_preprocess_HOOK() for block templates. */ function aggregator_preprocess_block(&$variables) { if ($variables['configuration']['provider'] == 'aggregator') { $variables['attributes']['role'] = 'complementary'; } }