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<?php
/**
* @file
* Used to aggregate syndicated content (RSS, RDF, and Atom).
*/
/**
* Denotes that a feed's items should never expire.
*/
define('AGGREGATOR_CLEAR_NEVER', 0);
/**
* Implements hook_help().
*/
function aggregator_help($path, $arg) {
switch ($path) {
case 'admin/help#aggregator':
$output = '';
$output .= '<h3>' . t('About') . '</h3>';
$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 online handbook entry for <a href="@aggregator-module">Aggregator module</a>.', array('@aggregator-module' => 'http://drupal.org/documentation/modules/aggregator', '@aggregator' => url('aggregator'))) . '</p>';
$output .= '<h3>' . t('Uses') . '</h3>';
$output .= '<dl>';
$output .= '<dt>' . t('Viewing feeds') . '</dt>';
$output .= '<dd>' . t('Feeds contain published content, and may be grouped in categories, generally by topic. 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 or category can be displayed as a block through the <a href="@admin-block">Blocks administration page</a>.', array('@aggregator' => url('aggregator'), '@aggregator-sources' => url('aggregator/sources'), '@admin-block' => url('admin/structure/block'))) . '</a></dd>';
$output .= '<dt>' . t('Adding, editing, and deleting feeds') . '</dt>';
$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' => url('admin/config/services/aggregator'))) . '</dd>';
$output .= '<dt>' . t('OPML integration') . '</dt>';
$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('aggregator/opml'), '@import-opml' => url('admin/config/services/aggregator'))) . '</dd>';
$output .= '<dt>' . t('Configuring cron') . '</dt>';
$output .= '<dd>' . t('A correctly configured <a href="@cron">cron maintenance task</a> is required to update feeds automatically.', array('@cron' => 'http://drupal.org/cron')) . '</dd>';
$output .= '</dl>';
return $output;
case 'admin/config/services/aggregator':
$output = '<p>' . t('Thousands of sites (particularly news sites and blogs) publish their latest headlines and posts in feeds, using a number of standardized XML-based formats. Formats supported by the aggregator include <a href="@rss">RSS</a>, <a href="@rdf">RDF</a>, and <a href="@atom">Atom</a>.', array('@rss' => 'http://cyber.law.harvard.edu/rss/', '@rdf' => 'http://www.w3.org/RDF/', '@atom' => 'http://www.atomenabled.org')) . '</p>';
$output .= '<p>' . t('Current feeds are listed below, and <a href="@addfeed">new feeds may be added</a>. For each feed or feed category, the <em>latest items</em> block may be enabled at the <a href="@block">blocks administration page</a>.', array('@addfeed' => url('admin/config/services/aggregator/add/feed'), '@block' => url('admin/structure/block'))) . '</p>';
return $output;
case 'admin/config/services/aggregator/add/feed':
return '<p>' . t('Add a feed in RSS, RDF or Atom format. A feed may only have one entry.') . '</p>';
case 'admin/config/services/aggregator/add/category':
return '<p>' . t('Categories allow feed items from different feeds to be grouped together. For example, several sport-related feeds may belong to a category named <em>Sports</em>. Feed items may be grouped automatically (by selecting a category when creating or editing a feed) or manually (via the <em>Categorize</em> page available from feed item listings). Each category provides its own feed page and block.') . '</p>';
case 'admin/config/services/aggregator/add/opml':
return '<p>' . t('<acronym title="Outline Processor Markup Language">OPML</acronym> is an XML format used to exchange multiple feeds between aggregators. A single OPML document may contain a collection of many feeds. Drupal can parse such a file and import all feeds at once, saving you the effort of adding them manually. You may either upload a local file from your computer or enter a URL where Drupal can download it.') . '</p>';
}
}
/**
* Implements hook_theme().
*/
function aggregator_theme() {
return array(
'aggregator_wrapper' => array(
'variables' => array('content' => NULL),
'file' => 'aggregator.pages.inc',
'template' => 'aggregator-wrapper',
),
'aggregator_categorize_items' => array(
'render element' => 'form',
'file' => 'aggregator.pages.inc',
),
'aggregator_feed_source' => array(
'variables' => array('feed' => NULL),
'file' => 'aggregator.pages.inc',
'template' => 'aggregator-feed-source',
),
'aggregator_block_item' => array(
'variables' => array('item' => NULL, 'feed' => 0),
),
'aggregator_summary_items' => array(
'variables' => array('summary_items' => NULL, 'source' => NULL),
'file' => 'aggregator.pages.inc',
'template' => 'aggregator-summary-items',
),
'aggregator_summary_item' => array(
'variables' => array('item' => NULL),
'file' => 'aggregator.pages.inc',
'template' => 'aggregator-summary-item',
),
'aggregator_item' => array(
'variables' => array('item' => NULL),
'file' => 'aggregator.pages.inc',
'template' => 'aggregator-item',
),
'aggregator_page_opml' => array(
'variables' => array('feeds' => NULL),
'file' => 'aggregator.pages.inc',
),
'aggregator_page_rss' => array(
'variables' => array('feeds' => NULL, 'category' => NULL),
'file' => 'aggregator.pages.inc',
),
);
}
/**
* Implements hook_menu().
*/
function aggregator_menu() {
$items['admin/config/services/aggregator'] = array(
'title' => 'Feed aggregator',
'description' => "Configure which content your site aggregates from other sites, how often it polls them, and how they're categorized.",
'page callback' => 'aggregator_admin_overview',
'access arguments' => array('administer news feeds'),
'weight' => 10,
'file' => 'aggregator.admin.inc',
);
$items['admin/config/services/aggregator/add/feed'] = array(
'title' => 'Add feed',
'page callback' => 'drupal_get_form',
'page arguments' => array('aggregator_form_feed'),
'access arguments' => array('administer news feeds'),
'type' => MENU_LOCAL_ACTION,
'file' => 'aggregator.admin.inc',
);
$items['admin/config/services/aggregator/add/category'] = array(
'title' => 'Add category',
'page callback' => 'drupal_get_form',
'page arguments' => array('aggregator_form_category'),
'access arguments' => array('administer news feeds'),
'type' => MENU_LOCAL_ACTION,
'file' => 'aggregator.admin.inc',
);
$items['admin/config/services/aggregator/add/opml'] = array(
'title' => 'Import OPML',
'page callback' => 'drupal_get_form',
'page arguments' => array('aggregator_form_opml'),
'access arguments' => array('administer news feeds'),
'type' => MENU_LOCAL_ACTION,
'file' => 'aggregator.admin.inc',
);
$items['admin/config/services/aggregator/remove/%aggregator_feed'] = array(
'title' => 'Remove items',
'page callback' => 'drupal_get_form',
'page arguments' => array('aggregator_admin_remove_feed', 5),
'access arguments' => array('administer news feeds'),
'file' => 'aggregator.admin.inc',
);
$items['admin/config/services/aggregator/update/%aggregator_feed'] = array(
'title' => 'Update items',
'page callback' => 'aggregator_admin_refresh_feed',
'page arguments' => array(5),
'access arguments' => array('administer news feeds'),
'file' => 'aggregator.admin.inc',
);
$items['admin/config/services/aggregator/list'] = array(
'title' => 'List',
'type' => MENU_DEFAULT_LOCAL_TASK,
'weight' => -10,
);
$items['admin/config/services/aggregator/settings'] = array(
'title' => 'Settings',
'description' => 'Configure the behavior of the feed aggregator, including when to discard feed items and how to present feed items and categories.',
'page callback' => 'drupal_get_form',
'page arguments' => array('aggregator_admin_form'),
'access arguments' => array('administer news feeds'),
'type' => MENU_LOCAL_TASK,
'file' => 'aggregator.admin.inc',
);
$items['aggregator'] = array(
'title' => 'Feed aggregator',
'page callback' => 'aggregator_page_last',
'access arguments' => array('access news feeds'),
'weight' => 5,
'file' => 'aggregator.pages.inc',
);
$items['aggregator/sources'] = array(
'title' => 'Sources',
'page callback' => 'aggregator_page_sources',
'access arguments' => array('access news feeds'),
'file' => 'aggregator.pages.inc',
);
$items['aggregator/categories'] = array(
'title' => 'Categories',
'page callback' => 'aggregator_page_categories',
'access callback' => '_aggregator_has_categories',
'file' => 'aggregator.pages.inc',
);
$items['aggregator/rss'] = array(
'title' => 'RSS feed',
'page callback' => 'aggregator_page_rss',
'access arguments' => array('access news feeds'),
'type' => MENU_CALLBACK,
'file' => 'aggregator.pages.inc',
);
$items['aggregator/opml'] = array(
'title' => 'OPML feed',
'page callback' => 'aggregator_page_opml',
'access arguments' => array('access news feeds'),
'type' => MENU_CALLBACK,
'file' => 'aggregator.pages.inc',
);
$items['aggregator/categories/%aggregator_category'] = array(
'title callback' => '_aggregator_category_title',
'title arguments' => array(2),
'page callback' => 'aggregator_page_category',
'page arguments' => array(2),
'access arguments' => array('access news feeds'),
'file' => 'aggregator.pages.inc',
);
$items['aggregator/categories/%aggregator_category/view'] = array(
'title' => 'View',
'type' => MENU_DEFAULT_LOCAL_TASK,
'weight' => -10,
);
$items['aggregator/categories/%aggregator_category/categorize'] = array(
'title' => 'Categorize',
'page callback' => 'drupal_get_form',
'page arguments' => array('aggregator_page_category_form', 2),
'access arguments' => array('administer news feeds'),
'type' => MENU_LOCAL_TASK,
'file' => 'aggregator.pages.inc',
);
$items['aggregator/categories/%aggregator_category/configure'] = array(
'title' => 'Configure',
'page callback' => 'drupal_get_form',
'page arguments' => array('aggregator_form_category', 2),
'access arguments' => array('administer news feeds'),
'type' => MENU_LOCAL_TASK,
'weight' => 1,
'file' => 'aggregator.admin.inc',
);
$items['aggregator/sources/%aggregator_feed'] = array(
'page callback' => 'aggregator_page_source',
'page arguments' => array(2),
'access arguments' => array('access news feeds'),
'file' => 'aggregator.pages.inc',
);
$items['aggregator/sources/%aggregator_feed/view'] = array(
'title' => 'View',
'type' => MENU_DEFAULT_LOCAL_TASK,
'weight' => -10,
);
$items['aggregator/sources/%aggregator_feed/categorize'] = array(
'title' => 'Categorize',
'page callback' => 'drupal_get_form',
'page arguments' => array('aggregator_page_source_form', 2),
'access arguments' => array('administer news feeds'),
'type' => MENU_LOCAL_TASK,
'file' => 'aggregator.pages.inc',
);
$items['aggregator/sources/%aggregator_feed/configure'] = array(
'title' => 'Configure',
'page callback' => 'drupal_get_form',
'page arguments' => array('aggregator_form_feed', 2),
'access arguments' => array('administer news feeds'),
'type' => MENU_LOCAL_TASK,
'weight' => 1,
'file' => 'aggregator.admin.inc',
);
$items['admin/config/services/aggregator/edit/feed/%aggregator_feed'] = array(
'title' => 'Edit feed',
'page callback' => 'drupal_get_form',
'page arguments' => array('aggregator_form_feed', 6),
'access arguments' => array('administer news feeds'),
'file' => 'aggregator.admin.inc',
);
$items['admin/config/services/aggregator/edit/category/%aggregator_category'] = array(
'title' => 'Edit category',
'page callback' => 'drupal_get_form',
'page arguments' => array('aggregator_form_category', 6),
'access arguments' => array('administer news feeds'),
'file' => 'aggregator.admin.inc',
);
return $items;
}
/**
* Title callback: Returns a title for aggregator category pages.
*
* @param $category
* An aggregator category.
*
* @return
* A string with the aggregator category title.
*/
function _aggregator_category_title($category) {
return $category['title'];
}
/**
* Determines whether there are any aggregator categories.
*
* @return
* TRUE if there is at least one category and the user has access to them;
* FALSE otherwise.
*/
function _aggregator_has_categories() {
return user_access('access news feeds') && (bool) db_query_range('SELECT 1 FROM {aggregator_category}', 0, 1)->fetchField();
}
/**
* 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() {
$result = db_query('SELECT * FROM {aggregator_feed} WHERE queued = 0 AND checked + refresh < :time AND refresh <> :never', array(
':time' => REQUEST_TIME,
':never' => AGGREGATOR_CLEAR_NEVER
));
$queue = DrupalQueue::get('aggregator_feeds');
foreach ($result as $feed) {
if ($queue->createItem($feed)) {
// Add timestamp to avoid queueing item more than once.
db_update('aggregator_feed')
->fields(array('queued' => REQUEST_TIME))
->condition('fid', $feed->fid)
->execute();
}
}
// Remove queued timestamp after 6 hours assuming the update has failed.
db_update('aggregator_feed')
->fields(array('queued' => 0))
->condition('queued', REQUEST_TIME - (3600 * 6), '<')
->execute();
}
/**
* Implements hook_cron_queue_info().
*/
function aggregator_cron_queue_info() {
$queues['aggregator_feeds'] = array(
'worker callback' => 'aggregator_refresh',
'time' => 60,
);
return $queues;
}
/**
* Implements hook_block_info().
*/
function aggregator_block_info() {
$blocks = array();
$result = db_query('SELECT cid, title FROM {aggregator_category} ORDER BY title');
foreach ($result as $category) {
$blocks['category-' . $category->cid]['info'] = t('!title category latest items', array('!title' => $category->title));
}
$result = db_query('SELECT fid, title FROM {aggregator_feed} WHERE block <> 0 ORDER BY fid');
foreach ($result as $feed) {
$blocks['feed-' . $feed->fid]['info'] = t('!title feed latest items', array('!title' => $feed->title));
}
return $blocks;
}
/**
* Implements hook_block_configure().
*/
function aggregator_block_configure($delta = '') {
list($type, $id) = explode('-', $delta);
if ($type == 'category') {
$value = db_query('SELECT block FROM {aggregator_category} WHERE cid = :cid', array(':cid' => $id))->fetchField();
$form['block'] = array(
'#type' => 'select',
'#title' => t('Number of news items in block'),
'#default_value' => $value,
'#options' => drupal_map_assoc(range(2, 20)),
);
return $form;
}
}
/**
* Implements hook_block_save().
*/
function aggregator_block_save($delta = '', $edit = array()) {
list($type, $id) = explode('-', $delta);
if ($type == 'category') {
db_update('aggregator_category')
->fields(array('block' => $edit['block']))
->condition('cid', $id)
->execute();
}
}
/**
* Implements hook_block_view().
*
* Generates blocks for the latest news items in each category and feed.
*/
function aggregator_block_view($delta = '') {
if (user_access('access news feeds')) {
$block = array();
list($type, $id) = explode('-', $delta);
$result = FALSE;
switch ($type) {
case 'feed':
if ($feed = db_query('SELECT fid, title, block FROM {aggregator_feed} WHERE block <> 0 AND fid = :fid', array(':fid' => $id))->fetchObject()) {
$block['subject'] = check_plain($feed->title);
$result = db_query_range("SELECT * FROM {aggregator_item} WHERE fid = :fid ORDER BY timestamp DESC, iid DESC", 0, $feed->block, array(':fid' => $id));
$read_more = theme('more_link', array('url' => 'aggregator/sources/' . $feed->fid, 'title' => t("View this feed's recent news.")));
}
break;
case 'category':
if ($category = db_query('SELECT cid, title, block FROM {aggregator_category} WHERE cid = :cid', array(':cid' => $id))->fetchObject()) {
$block['subject'] = check_plain($category->title);
$result = db_query_range('SELECT i.* FROM {aggregator_category_item} ci LEFT JOIN {aggregator_item} i ON ci.iid = i.iid WHERE ci.cid = :cid ORDER BY i.timestamp DESC, i.iid DESC', 0, $category->block, array(':cid' => $category->cid));
$read_more = theme('more_link', array('url' => 'aggregator/categories/' . $category->cid, 'title' => t("View this category's recent news.")));
}
break;
}
$items = array();
if (!empty($result)) {
foreach ($result as $item) {
$items[] = theme('aggregator_block_item', array('item' => $item));
}
}
// Only display the block if there are items to show.
if (count($items) > 0) {
$block['content'] = theme('item_list', array('items' => $items)) . $read_more;
}
return $block;
}
}
/**
* Adds/edits/deletes aggregator categories.
*
* @param $edit
* An associative array describing the category to be added/edited/deleted.
*/
function aggregator_save_category($edit) {
$link_path = 'aggregator/categories/';
if (!empty($edit['cid'])) {
$link_path .= $edit['cid'];
if (!empty($edit['title'])) {
db_merge('aggregator_category')
->key(array('cid' => $edit['cid']))
->fields(array(
'title' => $edit['title'],
'description' => $edit['description'],
))
->execute();
$op = 'update';
}
else {
db_delete('aggregator_category')
->condition('cid', $edit['cid'])
->execute();
// Make sure there is no active block for this category.
if (module_exists('block')) {
db_delete('block')
->condition('module', 'aggregator')
->condition('delta', 'category-' . $edit['cid'])
->execute();
}
$edit['title'] = '';
$op = 'delete';
}
}
elseif (!empty($edit['title'])) {
// A single unique id for bundles and feeds, to use in blocks.
$link_path .= db_insert('aggregator_category')
->fields(array(
'title' => $edit['title'],
'description' => $edit['description'],
'block' => 5,
))
->execute();
$op = 'insert';
}
if (isset($op)) {
menu_link_maintain('aggregator', $op, $link_path, $edit['title']);
}
}
/**
* Add/edit/delete an aggregator feed.
*
* @param $edit
* An associative array describing the feed to be added/edited/deleted.
*/
function aggregator_save_feed($edit) {
if (!empty($edit['fid'])) {
// An existing feed is being modified, delete the category listings.
db_delete('aggregator_category_feed')
->condition('fid', $edit['fid'])
->execute();
}
if (!empty($edit['fid']) && !empty($edit['title'])) {
db_update('aggregator_feed')
->condition('fid', $edit['fid'])
->fields(array(
'title' => $edit['title'],
'url' => $edit['url'],
'refresh' => $edit['refresh'],
'block' => $edit['block'],
))
->execute();
}
elseif (!empty($edit['fid'])) {
$iids = db_query('SELECT iid FROM {aggregator_item} WHERE fid = :fid', array(':fid' => $edit['fid']))->fetchCol();
if ($iids) {
db_delete('aggregator_category_item')
->condition('iid', $iids, 'IN')
->execute();
}
db_delete('aggregator_feed')->
condition('fid', $edit['fid'])
->execute();
db_delete('aggregator_item')
->condition('fid', $edit['fid'])
->execute();
// Make sure there is no active block for this feed.
if (module_exists('block')) {
db_delete('block')
->condition('module', 'aggregator')
->condition('delta', 'feed-' . $edit['fid'])
->execute();
}
}
elseif (!empty($edit['title'])) {
$edit['fid'] = db_insert('aggregator_feed')
->fields(array(
'title' => $edit['title'],
'url' => $edit['url'],
'refresh' => $edit['refresh'],
'block' => $edit['block'],
'link' => '',
'description' => '',
'image' => '',
))
->execute();
}
if (!empty($edit['title'])) {
// The feed is being saved, save the categories as well.
if (!empty($edit['category'])) {
foreach ($edit['category'] as $cid => $value) {
if ($value) {
db_insert('aggregator_category_feed')
->fields(array(
'fid' => $edit['fid'],
'cid' => $cid,
))
->execute();
}
}
}
}
}
/**
* Removes all items from a feed.
*
* @param $feed
* An object describing the feed to be cleared.
*/
function aggregator_remove($feed) {
_aggregator_get_variables();
// Call hook_aggregator_remove() on all modules.
module_invoke_all('aggregator_remove', $feed);
// Reset feed.
db_update('aggregator_feed')
->condition('fid', $feed->fid)
->fields(array(
'checked' => 0,
'hash' => '',
'etag' => '',
'modified' => 0,
))
->execute();
}
/**
* Gets the fetcher, parser, and processors.
*
* @return
* An array containing the fetcher, parser, and processors.
*/
function _aggregator_get_variables() {
// Fetch the feed.
$fetcher = variable_get('aggregator_fetcher', 'aggregator');
if ($fetcher == 'aggregator') {
include_once DRUPAL_ROOT . '/' . drupal_get_path('module', 'aggregator') . '/aggregator.fetcher.inc';
}
$parser = variable_get('aggregator_parser', 'aggregator');
if ($parser == 'aggregator') {
include_once DRUPAL_ROOT . '/' . drupal_get_path('module', 'aggregator') . '/aggregator.parser.inc';
}
$processors = variable_get('aggregator_processors', array('aggregator'));
if (in_array('aggregator', $processors)) {
include_once DRUPAL_ROOT . '/' . drupal_get_path('module', 'aggregator') . '/aggregator.processor.inc';
}
return array($fetcher, $parser, $processors);
}
/**
* Checks a news feed for new items.
*
* @param $feed
* An object describing the feed to be refreshed.
*/
function aggregator_refresh($feed) {
// Store feed URL to track changes.
$feed_url = $feed->url;
// Fetch the feed.
list($fetcher, $parser, $processors) = _aggregator_get_variables();
$success = module_invoke($fetcher, 'aggregator_fetch', $feed);
// We store the hash of feed data in the database. When refreshing a
// feed we compare stored hash and new hash calculated from downloaded
// data. If both are equal we say that feed is not updated.
$hash = hash('sha256', $feed->source_string);
if ($success && ($feed->hash != $hash)) {
// Parse the feed.
if (module_invoke($parser, 'aggregator_parse', $feed)) {
// Update feed with parsed data.
db_merge('aggregator_feed')
->key(array('fid' => $feed->fid))
->fields(array(
'url' => $feed->url,
'link' => empty($feed->link) ? $feed->url : $feed->link,
'description' => empty($feed->description) ? '' : $feed->description,
'image' => empty($feed->image) ? '' : $feed->image,
'hash' => $hash,
'etag' => empty($feed->etag) ? '' : $feed->etag,
'modified' => empty($feed->modified) ? 0 : $feed->modified,
))
->execute();
// Log if feed URL has changed.
if ($feed->url != $feed_url) {
watchdog('aggregator', 'Updated URL for feed %title to %url.', array('%title' => $feed->title, '%url' => $feed->url));
}
watchdog('aggregator', 'There is new syndicated content from %site.', array('%site' => $feed->title));
drupal_set_message(t('There is new syndicated content from %site.', array('%site' => $feed->title)));
// If there are items on the feed, let all enabled processors do their work on it.
if (@count($feed->items)) {
foreach ($processors as $processor) {
module_invoke($processor, 'aggregator_process', $feed);
}
}
}
}
else {
drupal_set_message(t('There is no new syndicated content from %site.', array('%site' => $feed->title)));
}
// Regardless of successful or not, indicate that this feed has been checked.
db_update('aggregator_feed')
->fields(array('checked' => REQUEST_TIME, 'queued' => 0))
->condition('fid', $feed->fid)
->execute();
// Expire old feed items.
if (function_exists('aggregator_expire')) {
aggregator_expire($feed);
}
}
/**
* Loads an aggregator feed.
*
* @param $fid
* The feed id.
*
* @return
* An object describing the feed.
*/
function aggregator_feed_load($fid) {
$feeds = &drupal_static(__FUNCTION__);
if (!isset($feeds[$fid])) {
$feeds[$fid] = db_query('SELECT * FROM {aggregator_feed} WHERE fid = :fid', array(':fid' => $fid))->fetchObject();
}
return $feeds[$fid];
}
/**
* Loads an aggregator category.
*
* @param $cid
* The category id.
*
* @return
* An associative array describing the category.
*/
function aggregator_category_load($cid) {
$categories = &drupal_static(__FUNCTION__);
if (!isset($categories[$cid])) {
$categories[$cid] = db_query('SELECT * FROM {aggregator_category} WHERE cid = :cid', array(':cid' => $cid))->fetchAssoc();
}
return $categories[$cid];
}
/**
* Returns HTML for an individual feed item for display in the block.
*
* @param $variables
* An associative array containing:
* - item: The item to be displayed.
* - feed: Not used.
*
* @ingroup themeable
*/
function theme_aggregator_block_item($variables) {
// Display the external link to the item.
return '<a href="' . check_url($variables['item']->link) . '">' . check_plain($variables['item']->title) . "</a>\n";
}
/**
* Renders the HTML content safely, as allowed.
*
* @param $value
* The content to be filtered.
*
* @return
* The filtered content.
*/
function aggregator_filter_xss($value) {
return filter_xss($value, preg_split('/\s+|<|>/', variable_get('aggregator_allowed_html_tags', '<a> <b> <br> <dd> <dl> <dt> <em> <i> <li> <ol> <p> <strong> <u> <ul>'), -1, PREG_SPLIT_NO_EMPTY));
}
/**
* Checks and sanitizes the aggregator configuration.
*
* Goes through all fetchers, parsers and processors and checks whether they
* are available. If one is missing, resets to standard configuration.
*
* @return
* TRUE if this function resets the configuration; FALSE if not.
*/
function aggregator_sanitize_configuration() {
$reset = FALSE;
list($fetcher, $parser, $processors) = _aggregator_get_variables();
if (!module_exists($fetcher)) {
$reset = TRUE;
}
if (!module_exists($parser)) {
$reset = TRUE;
}
foreach ($processors as $processor) {
if (!module_exists($processor)) {
$reset = TRUE;
break;
}
}
if ($reset) {
variable_del('aggregator_fetcher');
variable_del('aggregator_parser');
variable_del('aggregator_processors');
return TRUE;
}
return FALSE;
}
/**
* Helper function for drupal_map_assoc.
*
* @param $count
* Items count.
*
* @return
* A string that is plural-formatted as "@count items".
*/
function _aggregator_items($count) {
return format_plural($count, '1 item', '@count items');
}