' . 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' => \Drupal::url('aggregator.sources'), '!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' => \Drupal::url('aggregator.opml_page'), '!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_source' => array( 'variables' => array('aggregator_feed' => NULL, 'view_mode' => NULL), 'file' => 'aggregator.theme.inc', 'template' => 'aggregator-feed-source', ), 'aggregator_block_item' => array( 'variables' => array('item' => NULL, 'feed' => 0), 'file' => 'aggregator.theme.inc', 'template' => 'aggregator-block-item', ), 'aggregator_summary_items' => array( 'variables' => array('summary_items' => NULL, 'source' => NULL), 'file' => 'aggregator.theme.inc', 'template' => 'aggregator-summary-items', ), 'aggregator_summary_item' => array( 'variables' => array('aggregator_item' => NULL, 'view_mode' => NULL), 'file' => 'aggregator.theme.inc', 'template' => 'aggregator-summary-item', ), 'aggregator_item' => array( 'variables' => array('aggregator_item' => NULL, 'view_mode' => NULL), 'file' => 'aggregator.theme.inc', 'template' => 'aggregator-item', ), 'aggregator_page_opml' => array( 'variables' => array('feeds' => NULL), 'file' => 'aggregator.theme.inc', ), 'aggregator_page_rss' => array( 'variables' => array('feeds' => NULL), 'file' => 'aggregator.theme.inc', ), ); } /** * Implements hook_permission(). */ function aggregator_permission() { return array( 'administer news feeds' => array( 'title' => t('Administer news feeds'), ), 'access news feeds' => array( 'title' => t('View news feeds'), ), ); } /** * 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(); } } } /** * Implements hook_queue_info(). */ function aggregator_queue_info() { $queues['aggregator_feeds'] = array( 'title' => t('Aggregator refresh'), 'worker callback' => function (FeedInterface $feed) { $feed->refreshItems(); }, 'cron' => array( 'time' => 60, ), ); return $queues; } /** * Renders the HTML content safely, as allowed. * * @param $value * The content to be filtered. * * @return * The filtered content. */ function aggregator_filter_xss($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'; } }