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<?php
// $Id: aggregator.pages.inc,v 1.12 2008/01/08 10:35:40 goba Exp $
/**
* @file
* User page callbacks for the aggregator module.
*/
/**
* Menu callback; displays the most recent items gathered from any feed.
*
* @return
* The items HTML.
*/
function aggregator_page_last() {
drupal_add_feed(url('aggregator/rss'), variable_get('site_name', 'Drupal') .' '. t('aggregator'));
$items = aggregator_feed_items_load('SELECT i.*, f.title AS ftitle, f.link AS flink FROM {aggregator_item} i INNER JOIN {aggregator_feed} f ON i.fid = f.fid ORDER BY i.timestamp DESC, i.iid DESC');
return _aggregator_page_list($items, arg(1));
}
/**
* Menu callback; displays all the items captured from a particular feed.
*
* If there are two arguments then this function is the categorize form.
*
* @param $arg1
* If there are two arguments then $arg1 is $form_state. Otherwise, $arg1 is $feed.
* @param $arg2
* If there are two arguments then $arg2 is feed.
* @return
* The items HTML.
*/
function aggregator_page_source($arg1, $arg2 = NULL) {
// If there are two arguments then this function is the categorize form, and
// $arg1 is $form_state and $arg2 is $feed. Otherwise, $arg1 is $feed.
$feed = is_array($arg2) ? $arg2 : $arg1;
$feed = (object)$feed;
drupal_set_title(check_plain($feed->title));
$feed_source = theme('aggregator_feed_source', $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('SELECT * FROM {aggregator_item} WHERE fid = '. $feed->fid .' ORDER BY timestamp DESC, iid DESC');
return _aggregator_page_list($items, arg(3), $feed_source);
}
/**
* Menu callback; displays all the items aggregated in a particular category.
*
* If there are two arguments then this function is called as a form.
*
* @param $arg1
* If there are two arguments then $arg1 is $form_state. Otherwise, $arg1 is $category.
* @param $arg2
* If there are two arguments then $arg2 is $category.
* @return
* The items HTML.
*/
function aggregator_page_category($arg1, $arg2 = NULL) {
drupal_set_breadcrumb(array_merge(drupal_get_breadcrumb(), array(l(t('Categories'), 'aggregator/categories'))));
// If there are two arguments then we are called as a form, $arg1 is
// $form_state and $arg2 is $category. Otherwise, $arg1 is $category.
$category = is_array($arg2) ? $arg2 : $arg1;
drupal_add_feed(url('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('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 = '. $category['cid'] .' ORDER BY timestamp DESC, i.iid DESC');
return _aggregator_page_list($items, arg(3));
}
/**
* Load feed items by passing a SQL query.
*
* @param $sql
* The query to be executed.
* @return
* An array of the feed items.
*/
function aggregator_feed_items_load($sql) {
$items = array();
if (isset($sql)) {
$result = pager_query($sql, 20);
while ($item = db_fetch_object($result)) {
$result_category = 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 = %d ORDER BY c.title', $item->iid);
$item->categories = array();
while ($item_categories = db_fetch_object($result_category)) {
$item->categories[] = $item_categories;
}
$items[$item->iid] = $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 $feed_source
* The feed source URL.
* @return
* The items HTML.
*/
function _aggregator_page_list($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', $item);
}
$output = theme('aggregator_wrapper', $output);
}
return $output;
}
/**
* Form builder; build the page list form.
*
* @param $items
* An array of the feed items.
* @param $feed_source
* The feed source URL.
* @return
* The form structure.
* @ingroup forms
* @see aggregator_categorize_items_validate()
* @see aggregator_categorize_items_submit()
*/
function aggregator_categorize_items($items, $feed_source = '') {
$form['#submit'][] = 'aggregator_categorize_items_submit';
$form['#validate'][] = 'aggregator_categorize_items_validate';
$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('#value' => theme('aggregator_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 = %d', $item->iid);
$selected = array();
while ($category = db_fetch_object($categories_result)) {
if (!$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['submit'] = array('#type' => 'submit', '#value' => t('Save categories'));
return $form;
}
/**
* Validate aggregator_categorize_items form submissions.
*/
function aggregator_categorize_items_validate($form, &$form_state) {
if (!user_access('administer news feeds')) {
form_error($form, t('You are not allowed to categorize this feed item.'));
}
}
/**
* Process aggregator_categorize_items form submissions.
*/
function aggregator_categorize_items_submit($form, &$form_state) {
if (!empty($form_state['values']['categories'])) {
foreach ($form_state['values']['categories'] as $iid => $selection) {
db_query('DELETE FROM {aggregator_category_item} WHERE iid = %d', $iid);
foreach ($selection as $cid) {
if ($cid) {
db_query('INSERT INTO {aggregator_category_item} (cid, iid) VALUES (%d, %d)', $cid, $iid);
}
}
}
}
drupal_set_message(t('The categories have been saved.'));
}
/**
* Theme the page list form for assigning categories.
*
* @param $form
* An associative array containing the structure of the form.
* @return
* The output HTML.
* @ingroup themeable
*/
function theme_aggregator_categorize_items($form) {
$output = drupal_render($form['feed_source']);
$rows = array();
if ($form['items']) {
foreach (element_children($form['items']) as $key) {
if (is_array($form['items'][$key])) {
$rows[] = array(
drupal_render($form['items'][$key]),
array('data' => drupal_render($form['categories'][$key]), 'class' => 'categorize-item'),
);
}
}
}
$output .= theme('table', array('', t('Categorize')), $rows);
$output .= drupal_render($form['submit']);
$output .= drupal_render($form);
return theme('aggregator_wrapper', $output);
}
/**
* Process variables for aggregator-wrapper.tpl.php.
*
* @see aggregator-wrapper.tpl.php
*/
function template_preprocess_aggregator_wrapper(&$variables) {
$variables['pager'] = theme('pager', NULL, 20, 0);
}
/**
* Process variables for aggregator-item.tpl.php.
*
* @see aggregator-item.tpl.php
*/
function template_preprocess_aggregator_item(&$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(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);
}
}
/**
* Menu callback; displays all the feeds used by the aggregator.
*/
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');
$output = '';
while ($feed = db_fetch_object($result)) {
// 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 = %d ORDER BY i.timestamp DESC', $feed->fid, 0, variable_get('aggregator_summary_items', 3));
while ($item = db_fetch_object($items)) {
$summary_items[] = theme('aggregator_summary_item', $item);
}
}
$feed->url = url('aggregator/sources/'. $feed->fid);
$output .= theme('aggregator_summary_items', $summary_items, $feed);
}
$output .= theme('feed_icon', url('aggregator/opml'), t('OPML feed'));
return theme('aggregator_wrapper', $output);
}
/**
* Menu callback; displays all the categories used by the aggregator.
*/
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');
$output = '';
while ($category = db_fetch_object($result)) {
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 = %d ORDER BY i.timestamp DESC', $category->cid, 0, variable_get('aggregator_summary_items', 3));
while ($item = db_fetch_object($items)) {
$summary_items[] = theme('aggregator_summary_item', $item);
}
}
$category->url = url('aggregator/categories/'. $category->cid);
$output .= theme('aggregator_summary_items', $summary_items, $category);
}
return theme('aggregator_wrapper', $output);
}
/**
* Menu callback; generate an RSS 0.92 feed of aggregator items or categories.
*/
function aggregator_page_rss() {
$result = NULL;
// arg(2) is the passed cid, only select for that category
if (arg(2)) {
$category = db_fetch_object(db_query('SELECT cid, title FROM {aggregator_category} WHERE cid = %d', arg(2)));
$sql = '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 = %d ORDER BY timestamp DESC, i.iid DESC';
$result = db_query_range($sql, $category->cid, 0, variable_get('feed_default_items', 10));
}
// or, get the default aggregator items
else {
$category = NULL;
$sql = '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';
$result = db_query_range($sql, 0, variable_get('feed_default_items', 10));
}
$feeds = array();
while ($item = db_fetch_object($result)) {
$feeds[] = $item;
}
return theme('aggregator_page_rss', $feeds, $category);
}
/**
* Theme the RSS output.
*
* @param $feeds
* An array of the feeds to theme.
* @param $category
* A common category, if any, for all the feeds.
* @ingroup themeable
*/
function theme_aggregator_page_rss($feeds, $category = NULL) {
drupal_set_header('Content-Type: application/rss+xml; charset=utf-8');
$items = '';
$feed_length = variable_get('feed_item_length', 'teaser');
foreach ($feeds as $feed) {
switch ($feed_length) {
case 'teaser':
$teaser = node_teaser($feed->description);
if ($teaser != $feed->description) {
$teaser .= '<p><a href="'. check_url($feed->link) .'">'. t('read more') ."</a></p>\n";
}
$feed->description = $teaser;
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;
}
/**
* Menu callback; generates an OPML representation of all feeds.
*
* @param $cid
* If set, feeds are exported only from a category with this ID. Otherwise, all feeds are exported.
* @return
* The output XML.
*/
function aggregator_page_opml($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 = %d ORDER BY title', $cid);
}
else {
$result = db_query('SELECT * FROM {aggregator_feed} ORDER BY title');
}
$feeds = array();
while ($item = db_fetch_object($result)) {
$feeds[] = $item;
}
return theme('aggregator_page_opml', $feeds);
}
/**
* Theme the OPML feed output.
*
* @param $feeds
* An array of the feeds to theme.
* @ingroup themeable
*/
function theme_aggregator_page_opml($feeds) {
drupal_set_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('r') ."</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 $output;
}
/**
* Process variables for aggregator-summary-items.tpl.php.
*
* @see aggregator-summary-item.tpl.php
*/
function template_preprocess_aggregator_summary_items(&$variables) {
$variables['title'] = check_plain($variables['source']->title);
$variables['summary_list'] = theme('item_list', $variables['summary_items']);
$variables['source_url'] = $variables['source']->url;
}
/**
* Process variables for aggregator-summary-item.tpl.php.
*
* @see aggregator-summary-item.tpl.php
*/
function template_preprocess_aggregator_summary_item(&$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(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);
}
}
/**
* Process 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', $feed->url, t('!title feed', array('!title' => $feed->title)));
$variables['source_image'] = $feed->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(time() - $feed->checked)));
}
else {
$variables['last_checked'] = t('never');
}
if (user_access('administer news feeds')) {
$variables['last_checked'] = l($variables['last_checked'], 'admin/content/aggregator');
}
}
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