178 lines
7.7 KiB
Plaintext
178 lines
7.7 KiB
Plaintext
<?php
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/**
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* @file
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* Used to aggregate syndicated content (RSS, RDF, and Atom).
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*/
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use Drupal\aggregator\Entity\Feed;
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use Drupal\Core\Routing\RouteMatchInterface;
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/**
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* Denotes that a feed's items should never expire.
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*/
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const AGGREGATOR_CLEAR_NEVER = 0;
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/**
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* Implements hook_help().
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*/
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function aggregator_help($route_name, RouteMatchInterface $route_match) {
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switch ($route_name) {
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case 'help.page.aggregator':
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$path_validator = \Drupal::pathValidator();
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$output = '';
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$output .= '<h3>' . t('About') . '</h3>';
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$output .= '<p>' . 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 <a href="!aggregator-module">online documentation for the Aggregator module</a>.', array('!aggregator-module' => 'https://www.drupal.org/documentation/modules/aggregator')) . '</p>';
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$output .= '<h3>' . t('Uses') . '</h3>';
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$output .= '<dl>';
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// Check if the aggregator sources View is enabled.
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if ($url = $path_validator->getUrlIfValid('aggregator/sources')) {
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$output .= '<dt>' . t('Viewing feeds') . '</dt>';
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$output .= '<dd>' . t('Users view feed content in the <a href="!aggregator">main aggregator display</a>, or by <a href="!aggregator-sources">their source</a> (usually via an RSS feed reader). The most recent content in a feed can be displayed as a block through the <a href="!admin-block">Blocks administration page</a>.', array('!aggregator' => \Drupal::url('aggregator.page_last'), '!aggregator-sources' => $url->toString(), '!admin-block' => (\Drupal::moduleHandler()->moduleExists('block')) ? \Drupal::url('block.admin_display') : '#')) . '</dd>';
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}
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$output .= '<dt>' . t('Adding, editing, and deleting feeds') . '</dt>';
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$output .= '<dd>' . t('Administrators can add, edit, and delete feeds, and choose how often to check each feed for newly updated items on the <a href="!feededit">Feed aggregator administration page</a>.', array('!feededit' => \Drupal::url('aggregator.admin_overview'))) . '</dd>';
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$output .= '<dt>' . t('<abbr title="Outline Processor Markup Language">OPML</abbr> integration') . '</dt>';
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// Check if the aggregator opml View is enabled.
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if ($url = $path_validator->getUrlIfValid('aggregator/opml')) {
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$output .= '<dd>' . t('A <a href="!aggregator-opml">machine-readable OPML file</a> 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 <a href="!import-opml">imported via an OPML file</a>.', array('!aggregator-opml' => $url->toString(), '!import-opml' => \Drupal::url('aggregator.opml_add'))) . '</dd>';
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}
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$output .= '<dt>' . t('Configuring cron') . '</dt>';
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$output .= '<dd>' . t('A working <a href="!cron">cron maintenance task</a> is required to update feeds automatically.', array('!cron' => \Drupal::url('system.cron_settings'))) . '</dd>';
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$output .= '</dl>';
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return $output;
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case 'aggregator.admin_overview':
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// Don't use placeholders for possibility to change URLs for translators.
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$output = '<p>' . t('Many sites publish their headlines and posts in feeds, using a number of standardized XML-based formats. The aggregator supports <a href="http://en.wikipedia.org/wiki/Rss">RSS</a>, <a href="http://en.wikipedia.org/wiki/Resource_Description_Framework">RDF</a>, and <a href="http://en.wikipedia.org/wiki/Atom_%28standard%29">Atom</a>.') . '</p>';
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$output .= '<p>' . t('Current feeds are listed below, and <a href="!addfeed">new feeds may be added</a>. For each feed, the <em>latest items</em> block may be enabled at the <a href="!block">blocks administration page</a>.', array('!addfeed' => \Drupal::url('aggregator.feed_add'), '!block' => (\Drupal::moduleHandler()->moduleExists('block')) ? \Drupal::url('block.admin_display') : '#')) . '</p>';
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return $output;
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case 'aggregator.feed_add':
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return '<p>' . t('Add a feed in RSS, RDF or Atom format. A feed may only have one entry.') . '</p>';
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case 'aggregator.opml_add':
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return '<p>' . t('<abbr title="Outline Processor Markup Language">OPML</abbr> 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.') . '</p>';
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}
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}
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/**
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* Implements hook_theme().
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*/
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function aggregator_theme() {
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return array(
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'aggregator_feed' => array(
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'render element' => 'elements',
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'file' => 'aggregator.theme.inc',
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),
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'aggregator_item' => array(
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'render element' => 'elements',
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'file' => 'aggregator.theme.inc',
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),
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);
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}
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/**
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* Implements hook_entity_extra_field_info().
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*/
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function aggregator_entity_extra_field_info() {
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$extra = array();
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$extra['aggregator_feed']['aggregator_feed'] = array(
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'display' => array(
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'items' => array(
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'label' => t('Items'),
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'description' => t('Items associated with this feed'),
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'weight' => 0,
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),
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// @todo Move to a formatter at https://www.drupal.org/node/2339917.
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'image' => array(
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'label' => t('Image'),
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'description' => t('The feed image'),
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'weight' => 2,
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),
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// @todo Move to a formatter at https://www.drupal.org/node/2149845.
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'description' => array(
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'label' => t('Description'),
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'description' => t('The description of this feed'),
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'weight' => 3,
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),
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'more_link' => array(
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'label' => t('More link'),
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'description' => t('A more link to the feed detail page'),
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'weight' => 5,
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),
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'feed_icon' => array(
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'label' => t('Feed icon'),
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'description' => t('An icon that links to the feed url'),
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'weight' => 6,
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),
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),
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);
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$extra['aggregator_item']['aggregator_item'] = array(
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'display' => array(
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// @todo Move to a formatter at https://www.drupal.org/node/2149845.
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'description' => array(
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'label' => t('Description'),
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'description' => t('The description of this feed item'),
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'weight' => 2,
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),
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),
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);
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return $extra;
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}
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/**
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* Implements hook_cron().
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*
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* Queues news feeds for updates once their refresh interval has elapsed.
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*/
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function aggregator_cron() {
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$queue = \Drupal::queue('aggregator_feeds');
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$ids = \Drupal::entityManager()->getStorage('aggregator_feed')->getFeedIdsToRefresh();
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foreach (Feed::loadMultiple($ids) as $feed) {
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if ($queue->createItem($feed)) {
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// Add timestamp to avoid queueing item more than once.
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$feed->setQueuedTime(REQUEST_TIME);
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$feed->save();
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}
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}
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// Delete queued timestamp after 6 hours assuming the update has failed.
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$ids = \Drupal::entityQuery('aggregator_feed')
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->condition('queued', REQUEST_TIME - (3600 * 6), '<')
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->execute();
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if ($ids) {
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$feeds = Feed::loadMultiple($ids);
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foreach ($feeds as $feed) {
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$feed->setQueuedTime(0);
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$feed->save();
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}
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}
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}
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/**
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* Gets the list of allowed tags.
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*
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* @return array
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* The list of allowed tags.
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*
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* @internal
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*/
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function _aggregator_allowed_tags() {
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return preg_split('/\s+|<|>/', \Drupal::config('aggregator.settings')->get('items.allowed_html'), -1, PREG_SPLIT_NO_EMPTY);
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}
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/**
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* Implements hook_preprocess_HOOK() for block templates.
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*/
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function aggregator_preprocess_block(&$variables) {
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if ($variables['configuration']['provider'] == 'aggregator') {
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$variables['attributes']['role'] = 'complementary';
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}
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}
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