<?php
/**
* @file
* User page callbacks for the Aggregator module.
*/
/**
* Page callback: Displays the most recent items gathered from any feed.
*
* @return
* The rendered list of items for the feed.
*/
function aggregator_page_last() {
drupal_add_feed('aggregator/rss', variable_get('site_name', 'Drupal') . ' ' . t('aggregator'));
$items = aggregator_feed_items_load('sum');
return _aggregator_page_list($items, arg(1));
}
/**
* Page callback: Displays all the items captured from the particular feed.
*
* @param $feed
* The feed for which to display all items.
*
* @return
* The rendered list of items for a feed.
*
* @see aggregator_menu()
*/
function aggregator_page_source($feed) {
drupal_set_title($feed->title);
$feed_source = theme('aggregator_feed_source', array('feed' => $feed));
// It is safe to include the fid in the query because it's loaded from the
// database by aggregator_feed_load.
$items = aggregator_feed_items_load('source', $feed);
return _aggregator_page_list($items, arg(3), $feed_source);
}
/**
* Page callback: Displays a form with all items captured from a feed.
*
* @param $feed
* The feed for which to list all of the aggregated items.
*
* @return
* The rendered list of items for the feed.
*
* @see aggregator_page_source()
*/
function aggregator_page_source_form($form, $form_state, $feed) {
return aggregator_page_source($feed);
}
/**
* Page callback: Displays all the items aggregated in a particular category.
*
* @param $category
* The category for which to list all of the aggregated items.
*
* @return
* The rendered list of items for the feed.
*/
function aggregator_page_category($category) {
drupal_add_feed('aggregator/rss/' . $category['cid'], variable_get('site_name', 'Drupal') . ' ' . t('aggregator - @title', array('@title' => $category['title'])));
// It is safe to include the cid in the query because it's loaded from the
// database by aggregator_category_load.
$items = aggregator_feed_items_load('category', $category);
return _aggregator_page_list($items, arg(3));
}
/**
* Page callback: Displays a form containing items aggregated in a category.
*
* @param $category
* The category for which to list all of the aggregated items.
*
* @return
* The rendered list of items for the feed.
*
* @see aggregator_page_category()
*/
function aggregator_page_category_form($form, $form_state, $category) {
return aggregator_page_category($category);
}
/**
* Loads and optionally filters feed items.
*
* @param $type
* The type of filter for the items. Possible values are:
* - sum: No filtering.
* - source: Filter the feed items, limiting the result to items from a
* single source.
* - category: Filter the feed items by category.
* @param $data
* Feed or category data used for filtering. The type and value of $data
* depends on $type:
* - source: $data is an object with $data->fid identifying the feed used to
* as filter.
* - category: $data is an array with $data['cid'] being the category id to
* filter on.
* The $data parameter is not used when $type is 'sum'.
*
* @return
* An array of the feed items.
*/
function aggregator_feed_items_load($type, $data = NULL) {
$items = array();
switch ($type) {
case 'sum':
$query = db_select('aggregator_item', 'i');
$query->join('aggregator_feed', 'f', 'i.fid = f.fid');
$query->fields('i');
$query->addField('f', 'title', 'ftitle');
$query->addField('f', 'link', 'flink');
break;
case 'source':
$query = db_select('aggregator_item', 'i');
$query
->fields('i')
->condition('i.fid', $data->fid);
break;
case 'category':
$query = db_select('aggregator_category_item', 'c');
$query->leftJoin('aggregator_item', 'i', 'c.iid = i.iid');
$query->leftJoin('aggregator_feed', 'f', 'i.fid = f.fid');
$query
->fields('i')
->condition('cid', $data['cid']);
$query->addField('f', 'title', 'ftitle');
$query->addField('f', 'link', 'flink');
break;
}
$result = $query
->extend('PagerDefault')
->limit(20)
->orderBy('i.timestamp', 'DESC')
->orderBy('i.iid', 'DESC')
->execute();
foreach ($result as $item) {
$item->categories = db_query('SELECT c.title, c.cid FROM {aggregator_category_item} ci LEFT JOIN {aggregator_category} c ON ci.cid = c.cid WHERE ci.iid = :iid ORDER BY c.title', array(':iid' => $item->iid))->fetchAll();
$items[] = $item;
}
return $items;
}
/**
* Prints an aggregator page listing a number of feed items.
*
* Various menu callbacks use this function to print their feeds.
*
* @param $items
* The items to be listed.
* @param $op
* Which form should be added to the items. Only 'categorize' is now
* recognized.
* @param $feed_source
* The feed source URL.
*
* @return
* The rendered list of items for the feed.
*/
function _aggregator_page_list($items, $op, $feed_source = '') {
if (user_access('administer news feeds') && ($op == 'categorize')) {
// Get form data.
$output = aggregator_categorize_items($items, $feed_source);
}
else {
// Assemble themed output.
$output = $feed_source;
foreach ($items as $item) {
$output .= theme('aggregator_item', array('item' => $item));
}
$output = theme('aggregator_wrapper', array('content' => $output));
}
return $output;
}
/**
* Form constructor to build the page list form.
*
* @param $items
* An array of the feed items.
* @param $feed_source
* (optional) The feed source URL. Defaults to an empty string.
*
* @return array
* An array of FAPI elements.
*
* @see aggregator_categorize_items_submit()
* @see theme_aggregator_categorize_items()
* @ingroup forms
*/
function aggregator_categorize_items($items, $feed_source = '') {
$form['#submit'][] = 'aggregator_categorize_items_submit';
$form['#theme'] = 'aggregator_categorize_items';
$form['feed_source'] = array(
'#value' => $feed_source,
);
$categories = array();
$done = FALSE;
$form['items'] = array();
$form['categories'] = array(
'#tree' => TRUE,
);
foreach ($items as $item) {
$form['items'][$item->iid] = array('#markup' => theme('aggregator_item', array('item' => $item)));
$form['categories'][$item->iid] = array();
$categories_result = db_query('SELECT c.cid, c.title, ci.iid FROM {aggregator_category} c LEFT JOIN {aggregator_category_item} ci ON c.cid = ci.cid AND ci.iid = :iid', array(':iid' => $item->iid));
$selected = array();
foreach ($categories_result as $category) {
if (!$done) {
$categories[$category->cid] = check_plain($category->title);
}
if ($category->iid) {
$selected[] = $category->cid;
}
}
$done = TRUE;
$form['categories'][$item->iid] = array(
'#type' => variable_get('aggregator_category_selector', 'checkboxes'),
'#default_value' => $selected,
'#options' => $categories,
'#size' => 10,
'#multiple' => TRUE
);
}
$form['actions'] = array('#type' => 'actions');
$form['actions']['submit'] = array('#type' => 'submit', '#value' => t('Save categories'));
return $form;
}
/**
* Form submission handler for aggregator_categorize_items().
*/
function aggregator_categorize_items_submit($form, &$form_state) {
if (!empty($form_state['values']['categories'])) {
foreach ($form_state['values']['categories'] as $iid => $selection) {
db_delete('aggregator_category_item')
->condition('iid', $iid)
->execute();
$insert = db_insert('aggregator_category_item')->fields(array('iid', 'cid'));
$has_values = FALSE;
foreach ($selection as $cid) {
if ($cid && $iid) {
$has_values = TRUE;
$insert->values(array(
'iid' => $iid,
'cid' => $cid,
));
}
}
if ($has_values) {
$insert->execute();
}
}
}
drupal_set_message(t('The categories have been saved.'));
}
/**
* Returns HTML for the aggregator page list form for assigning categories.
*
* @param $variables
* An associative array containing:
* - form: A render element representing the form.
*
* @ingroup themeable
*/
function theme_aggregator_categorize_items($variables) {
$form = $variables['form'];
$output = drupal_render($form['feed_source']);
$rows = array();
if (!empty($form['items'])) {
foreach (element_children($form['items']) as $key) {
$rows[] = array(
drupal_render($form['items'][$key]),
array('data' => drupal_render($form['categories'][$key]), 'class' => array('categorize-item')),
);
}
}
$output .= theme('table', array('header' => array('', t('Categorize')), 'rows' => $rows));
$output .= drupal_render($form['submit']);
$output .= drupal_render_children($form);
return theme('aggregator_wrapper', array('content' => $output));
}
/**
* Processes variables for aggregator-wrapper.tpl.php.
*
* @see aggregator-wrapper.tpl.php
*/
function template_preprocess_aggregator_wrapper(&$variables) {
$variables['pager'] = theme('pager');
}
/**
* Processes variables for aggregator-item.tpl.php.
*
* @see aggregator-item.tpl.php
*/
function template_preprocess_aggregator_item(&$variables) {
$item = $variables['item'];
$variables['feed_url'] = check_url($item->link);
$variables['feed_title'] = check_plain($item->title);
$variables['content'] = aggregator_filter_xss($item->description);
$variables['source_url'] = '';
$variables['source_title'] = '';
if (isset($item->ftitle) && isset($item->fid)) {
$variables['source_url'] = url("aggregator/sources/$item->fid");
$variables['source_title'] = check_plain($item->ftitle);
}
if (date('Ymd', $item->timestamp) == date('Ymd')) {
$variables['source_date'] = t('%ago ago', array('%ago' => format_interval(REQUEST_TIME - $item->timestamp)));
}
else {
$variables['source_date'] = format_date($item->timestamp, 'custom', variable_get('date_format_medium', 'D, m/d/Y - H:i'));
}
$variables['categories'] = array();
foreach ($item->categories as $category) {
$variables['categories'][$category->cid] = l($category->title, 'aggregator/categories/' . $category->cid);
}
}
/**
* Page callback: Displays all the feeds used by the aggregator.
*
* @return
* An HTML-formatted string.
*
* @see aggregator_menu()
*/
function aggregator_page_sources() {
$result = db_query('SELECT f.fid, f.title, f.description, f.image, MAX(i.timestamp) AS last FROM {aggregator_feed} f LEFT JOIN {aggregator_item} i ON f.fid = i.fid GROUP BY f.fid, f.title, f.description, f.image ORDER BY last DESC, f.title');
$output = '';
foreach ($result as $feed) {
// Most recent items:
$summary_items = array();
if (variable_get('aggregator_summary_items', 3)) {
$items = db_query_range('SELECT i.title, i.timestamp, i.link FROM {aggregator_item} i WHERE i.fid = :fid ORDER BY i.timestamp DESC', 0, variable_get('aggregator_summary_items', 3), array(':fid' => $feed->fid));
foreach ($items as $item) {
$summary_items[] = theme('aggregator_summary_item', array('item' => $item));
}
}
$feed->url = url('aggregator/sources/' . $feed->fid);
$output .= theme('aggregator_summary_items', array('summary_items' => $summary_items, 'source' => $feed));
}
$output .= theme('feed_icon', array('url' => 'aggregator/opml', 'title' => t('OPML feed')));
return theme('aggregator_wrapper', array('content' => $output));
}
/**
* Page callback: Displays all the categories used by the Aggregator module.
*
* @return string
* An HTML formatted string.
*
* @see aggregator_menu()
*/
function aggregator_page_categories() {
$result = db_query('SELECT c.cid, c.title, c.description FROM {aggregator_category} c LEFT JOIN {aggregator_category_item} ci ON c.cid = ci.cid LEFT JOIN {aggregator_item} i ON ci.iid = i.iid GROUP BY c.cid, c.title, c.description');
$output = '';
foreach ($result as $category) {
if (variable_get('aggregator_summary_items', 3)) {
$summary_items = array();
$items = db_query_range('SELECT i.title, i.timestamp, i.link, f.title as feed_title, f.link as feed_link FROM {aggregator_category_item} ci LEFT JOIN {aggregator_item} i ON i.iid = ci.iid LEFT JOIN {aggregator_feed} f ON i.fid = f.fid WHERE ci.cid = :cid ORDER BY i.timestamp DESC', 0, variable_get('aggregator_summary_items', 3), array(':cid' => $category->cid));
foreach ($items as $item) {
$summary_items[] = theme('aggregator_summary_item', array('item' => $item));
}
}
$category->url = url('aggregator/categories/' . $category->cid);
$output .= theme('aggregator_summary_items', array('summary_items' => $summary_items, 'source' => $category));
}
return theme('aggregator_wrapper', array('content' => $output));
}
/**
* Page callback: Generates an RSS 0.92 feed of aggregator items or categories.
*
* @return string
* An HTML formatted string.
*/
function aggregator_page_rss() {
$result = NULL;
// arg(2) is the passed cid, only select for that category.
if (arg(2)) {
$category = db_query('SELECT cid, title FROM {aggregator_category} WHERE cid = :cid', array(':cid' => arg(2)))->fetchObject();
$result = db_query_range('SELECT i.*, f.title AS ftitle, f.link AS flink FROM {aggregator_category_item} c LEFT JOIN {aggregator_item} i ON c.iid = i.iid LEFT JOIN {aggregator_feed} f ON i.fid = f.fid WHERE cid = :cid ORDER BY timestamp DESC, i.iid DESC', 0, variable_get('feed_default_items', 10), array(':cid' => $category->cid));
}
// Or, get the default aggregator items.
else {
$category = NULL;
$result = db_query_range('SELECT i.*, f.title AS ftitle, f.link AS flink FROM {aggregator_item} i INNER JOIN {aggregator_feed} f ON i.fid = f.fid ORDER BY i.timestamp DESC, i.iid DESC', 0, variable_get('feed_default_items', 10));
}
$feeds = $result->fetchAll();
return theme('aggregator_page_rss', array('feeds' => $feeds, 'category' => $category));
}
/**
* Prints the RSS page for a feed.
*
* @param $variables
* An associative array containing:
* - feeds: An array of the feeds to theme.
* - category: A common category, if any, for all the feeds.
*
* @return void
*
* @ingroup themeable
*/
function theme_aggregator_page_rss($variables) {
$feeds = $variables['feeds'];
$category = $variables['category'];
drupal_add_http_header('Content-Type', 'application/rss+xml; charset=utf-8');
$items = '';
$feed_length = variable_get('feed_item_length', 'fulltext');
foreach ($feeds as $feed) {
switch ($feed_length) {
case 'teaser':
$summary = text_summary($feed->description, NULL, variable_get('aggregator_teaser_length', 600));
if ($summary != $feed->description) {
$summary .= '<p><a href="' . check_url($feed->link) . '">' . t('read more') . "</a></p>\n";
}
$feed->description = $summary;
break;
case 'title':
$feed->description = '';
break;
}
$items .= format_rss_item($feed->ftitle . ': ' . $feed->title, $feed->link, $feed->description, array('pubDate' => date('r', $feed->timestamp)));
}
$site_name = variable_get('site_name', 'Drupal');
$url = url((isset($category) ? 'aggregator/categories/' . $category->cid : 'aggregator'), array('absolute' => TRUE));
$description = isset($category) ? t('@site_name - aggregated feeds in category @title', array('@site_name' => $site_name, '@title' => $category->title)) : t('@site_name - aggregated feeds', array('@site_name' => $site_name));
$output = "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n";
$output .= "<rss version=\"2.0\">\n";
$output .= format_rss_channel(t('@site_name aggregator', array('@site_name' => $site_name)), $url, $description, $items);
$output .= "</rss>\n";
print $output;
}
/**
* Page callback: Generates an OPML representation of all feeds.
*
* @param $cid
* (optional) If set, feeds are exported only from a category with this ID.
* Otherwise, all feeds are exported. Defaults to NULL.
*
* @return
* An OPML formatted string.
*/
function aggregator_page_opml($cid = NULL) {
if ($cid) {
$result = db_query('SELECT f.title, f.url FROM {aggregator_feed} f LEFT JOIN {aggregator_category_feed} c on f.fid = c.fid WHERE c.cid = :cid ORDER BY title', array(':cid' => $cid));
}
else {
$result = db_query('SELECT * FROM {aggregator_feed} ORDER BY title');
}
$feeds = $result->fetchAll();
return theme('aggregator_page_opml', array('feeds' => $feeds));
}
/**
* Prints the OPML page for the feed.
*
* @param $variables
* An associative array containing:
* - feeds: An array of the feeds to theme.
*
* @ingroup themeable
*/
function theme_aggregator_page_opml($variables) {
$feeds = $variables['feeds'];
drupal_add_http_header('Content-Type', 'text/xml; charset=utf-8');
$output = "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n";
$output .= "<opml version=\"1.1\">\n";
$output .= "<head>\n";
$output .= '<title>' . check_plain(variable_get('site_name', 'Drupal')) . "</title>\n";
$output .= '<dateModified>' . gmdate(DATE_RFC2822, REQUEST_TIME) . "</dateModified>\n";
$output .= "</head>\n";
$output .= "<body>\n";
foreach ($feeds as $feed) {
$output .= '<outline text="' . check_plain($feed->title) . '" xmlUrl="' . check_url($feed->url) . "\" />\n";
}
$output .= "</body>\n";
$output .= "</opml>\n";
print $output;
}
/**
* Processes variables for aggregator-summary-items.tpl.php.
*
* @see aggregator-summary-items.tpl.php
*/
function template_preprocess_aggregator_summary_items(&$variables) {
$variables['title'] = check_plain($variables['source']->title);
$variables['summary_list'] = theme('item_list', array('items' => $variables['summary_items']));
$variables['source_url'] = $variables['source']->url;
}
/**
* Processes variables for aggregator-summary-item.tpl.php.
*
* @see aggregator-summary-item.tpl.php
*/
function template_preprocess_aggregator_summary_item(&$variables) {
$item = $variables['item'];
$variables['feed_url'] = check_url($item->link);
$variables['feed_title'] = check_plain($item->title);
$variables['feed_age'] = t('%age old', array('%age' => format_interval(REQUEST_TIME - $item->timestamp)));
$variables['source_url'] = '';
$variables['source_title'] = '';
if (!empty($item->feed_link)) {
$variables['source_url'] = check_url($item->feed_link);
$variables['source_title'] = check_plain($item->feed_title);
}
}
/**
* Processes variables for aggregator-feed-source.tpl.php.
*
* @see aggregator-feed-source.tpl.php
*/
function template_preprocess_aggregator_feed_source(&$variables) {
$feed = $variables['feed'];
$variables['source_icon'] = theme('feed_icon', array('url' => $feed->url, 'title' => t('!title feed', array('!title' => $feed->title))));
if (!empty($feed->image) && !empty($feed->title) && !empty($feed->link)) {
$variables['source_image'] = l(theme('image', array('path' => $feed->image, 'alt' => $feed->title)), $feed->link, array('html' => TRUE, 'attributes' => array('class' => 'feed-image')));
}
else {
$variables['source_image'] = '';
}
$variables['source_description'] = aggregator_filter_xss($feed->description);
$variables['source_url'] = check_url(url($feed->link, array('absolute' => TRUE)));
if ($feed->checked) {
$variables['last_checked'] = t('@time ago', array('@time' => format_interval(REQUEST_TIME - $feed->checked)));
}
else {
$variables['last_checked'] = t('never');
}
if (user_access('administer news feeds')) {
$variables['last_checked'] = l($variables['last_checked'], 'admin/config/services/aggregator');
}
}