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<?php
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// $Id: feedapi_node_discussion.module,v 1.10 2008/05/05 18:38:01 mustafau Exp $
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/**
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* @file
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*/
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/**
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* Implementation of hook_help().
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*/
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function feedapi_node_discussion_help($path, $arg) {
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switch ($path) {
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case 'admin/help#feedapi_node_discussion':
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return '<p>'. t('Finds out who links to who between FeedAPI Node items.') .'</p>';
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}
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}
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/**
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* Implementation of hook_menu().
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*/
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function feedapi_node_discussion_menu() {
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$items['admin/settings/feedapi_node_discussion'] = array(
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'title' => 'FeedAPI Node Discussion settings',
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'description' => 'Control how FeedAPI Node Discussion works.',
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'page callback' => 'drupal_get_form',
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'page arguments' => array('feedapi_node_discussion_admin_settings'),
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'access arguments' => array('administer site configuration'),
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);
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return $items;
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}
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/**
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* Menu callback.
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*/
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function feedapi_node_discussion_admin_settings() {
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$options = array();
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foreach (node_get_types() as $type => $name) {
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$options[$type] = $name->name;
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}
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$form['discussion_content_types'] = array(
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'#type' => 'checkboxes',
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'#title' => t('Disable/Enable discussion for content types'),
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'#default_value' => variable_get('discussion_content_types', array()),
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'#options' => $options,
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'#description' => t('A discussion section will be created for each node of selected content types.')
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);
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return system_settings_form($form);
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}
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/**
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* Invokes hook_feedapi_node_discussion() in every module.
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*
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* We cannot use module_invoke() for this, because the arguments need to
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* be passed by reference.
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*/
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function feedapi_node_discussion_invoke(&$node, $op, $links = array()) {
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foreach (module_list() as $module) {
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$function = $module .'_feedapi_node_discussion';
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if (function_exists($function)) {
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$function($node, $op, $links);
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}
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}
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}
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/**
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* Enter description here...
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*
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* @param unknown_type $type
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* @return unknown
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*/
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function feedapi_node_discussion_enabled($type) {
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$enabled_types = variable_get('discussion_content_types', array());
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if (isset($enabled_types[$type])) {
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return TRUE;
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}
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return FALSE;
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}
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/**
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* Implementation of hook_nodeapi().
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*/
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function feedapi_node_discussion_nodeapi($node, $op, $arg = 0) {
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if (!feedapi_node_discussion_enabled($node->type)) {
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return;
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}
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switch ($op) {
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case 'view':
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$discussion = array();
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$result = db_query("SELECT * FROM {feedapi_node_discussion} WHERE tid = %d", $node->nid);
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while ($from = db_fetch_array($result)) {
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$from_node = node_load($from['fid']);
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if (is_object($from_node)) {
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$discussion[] = array(l($from_node->title, 'node/'. $from['fid']));
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}
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}
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$num_link = count($discussion);
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if ($num_link > 0) {
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// $node->discussion = $num_link;
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$fieldset = array(
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'#title' => t('Discussion (!count)', array('!count' => $num_link)),
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'#collapsible' => TRUE,
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'#collapsed' => TRUE,
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'#value' => theme('table', NULL, $discussion),
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);
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$node->content['discussion'] = array(
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'#value' => theme('fieldset', $fieldset),
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'#weight' => 100,
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);
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}
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break;
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case 'insert':
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case 'update':
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// feedapi_node_discussion_insert($node);
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$links = _feedapi_node_discussion_extract_links($node);
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// module_invoke_all('feedapi_node_discussion', $node, $links, 'insert');
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if ($links != FALSE && count($links) > 0) {
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feedapi_node_discussion_invoke($node, $op, $links);
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}
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break;
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case 'delete':
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db_query('DELETE FROM {feedapi_node_discussion} WHERE fid = %d OR tid = %d', $node->nid, $node->nid);
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// module_invoke_all('feedapi_node_discussion', $node, array(), 'delete');
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// feedapi_node_discussion_invoke($node, 'delete');
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break;
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}
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}
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/**
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* Enter description here...
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*
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* @param unknown_type $url
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* @return unknown
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*/
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//function _feedapi_node_discussion_item_exists($url) {
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// return db_result(db_query("SELECT nid FROM {feedapi_node_item} WHERE url = '%s'", $url));
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//}
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function _feedapi_node_discussion_item_exists($url, $reset = FALSE) {
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static $records;
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if ($reset || !isset($records[$url])) {
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$result = db_query("SELECT feed_nid, nid FROM {feedapi_node_item} WHERE url = '%s'", $url);
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while ($raw = db_fetch_array($result)) {
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$records[$url] = $raw;
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}
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}
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return isset($records[$url]) ? $records[$url] : FALSE;
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}
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/**
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* Enter description here...
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*
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* @param unknown_type $fid
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* @param unknown_type $tid
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*/
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function feedapi_node_discussion_write_record($fid, $tid) {
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// Insert.
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db_query('INSERT INTO {feedapi_node_discussion} (fid, tid) VALUES (%d, %d)', $fid, $tid);
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}
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/**
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* Enter description here...
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*
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* @param unknown_type $content
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* @return unknown
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*/
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function _feedapi_node_discussion_extract_links($node) {
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$pattern = '~(<a[^>]+)/?>~i';
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$result = @preg_match_all($pattern, $node->body, $matches);
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if ($result === FALSE) {
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return FALSE;
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}
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$links = array();
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if (isset($matches[1]) && count($matches[1]) > 0) {
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foreach ($matches[1] as $link) {
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// force string to be an utf-8 one
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if (!mb_check_encoding($link, 'UTF-8')) {
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$link = mb_convert_encoding($link, 'UTF-8');
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}
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$xml = @simplexml_load_string(rtrim($link, ' /') .' />');
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if ($xml === FALSE) {
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continue;
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}
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$attributes = $xml->attributes();
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if (isset($attributes['rel']) && @preg_match('~^(nofollow)~i', $attributes['rel'])) {
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continue;
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}
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if (!isset($attributes['href'])) {
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continue;
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}
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$url = (string) $attributes['href'];
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if (!valid_url($url, TRUE)) {
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continue;
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}
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$links[] = $url;
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}
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}
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return $links;
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}
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///**
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// * Enter description here...
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// *
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// * @param unknown_type $feed
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// */
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//function feedapi_node_discussion_insert($node) {
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//// $pattern = '~(<a[^>]+)/? >~i';
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//// $result = @preg_match_all($pattern, $node->body, $matches);
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//// if ($result === FALSE) {
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//// return;
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//// }
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////
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//// if (isset($matches[1]) && count($matches[1]) > 0) {
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//// foreach ($matches[1] as $link) {
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//// // force string to be an utf-8 one
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//// if (!mb_check_encoding($link, 'UTF-8')) {
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//// $link = mb_convert_encoding($link, 'UTF-8');
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//// }
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//// $xml = @simplexml_load_string(rtrim($link, ' /') .' />');
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//// if ($xml === FALSE) {
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//// continue;
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//// }
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//// $attributes = $xml->attributes();
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//// if (isset($attributes['rel']) && @preg_match('~^(nofollow)~i', $attributes['rel'])) {
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//// continue;
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//// }
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//// if (!isset($attributes['href'])) {
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//// continue;
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//// }
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////
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//// $url = (string) $attributes['href'];
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//// if (!valid_url($url, TRUE)) {
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//// continue;
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//// }
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//
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// $links = _feedapi_node_discussion_extract_links($node->body);
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// foreach ($links as $link) {
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// // If this is a valid url to an item which was saved before.
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// $to_nid = _feedapi_node_discussion_item_exists($link);
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// if ($to_nid) {
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// if ($to_nid == $node->nid) {
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// continue;
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// }
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// // Check whether this discussion was saved before.
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// $result = db_result(db_query("SELECT fid FROM {feedapi_node_discussion} WHERE fid = %d AND tid = %d", $node->nid, $to_nid));
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// if ($result === FALSE) {
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// // Get feed nid for both from item and to item.
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// $from_feed = array();
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// $to_feed = array();
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// foreach ($node->feedapi_node->feed_nids as $n) {
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// $from_feed[] = $n;
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// }
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//// $from_result = db_query("SELECT feed_nid FROM {feedapi_node_item_feed} WHERE feed_item_nid = %d", $node->nid);
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//// $to_result = db_query("SELECT feed_nid FROM {feedapi_node_item_feed} WHERE feed_item_nid = %d", $to_nid);
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//// while ($f = db_fetch_array(db_query("SELECT * FROM {feedapi_node_item_feed} WHERE feed_item_nid = %d", $node->nid))) {
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// while ($f = db_fetch_array(db_query("SELECT * FROM {feedapi_node_item} WHERE feed_item_nid = %d", $node->nid))) {
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// $from_feed[] = $f['feed_nid'];
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// }
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//// while ($t = db_fetch_array(db_query("SELECT * FROM {feedapi_node_item_feed} WHERE feed_item_nid = %d", $to_nid))) {
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// while ($t = db_fetch_array(db_query("SELECT * FROM {feedapi_node_item_feed} WHERE feed_item_nid = %d", $to_nid))) {
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// $to_feed[] = $t['feed_nid'];
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// }
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//
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// $intersect = array_intersect($from_feed, $to_feed);
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// $continue = TRUE;
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// foreach ($intersect as $i) {
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// $continue = FALSE;
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// }
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//
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//// $continue = TRUE;
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//// foreach ($from_feed as $ff) {
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//// foreach ($to_feed as $tf) {
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//// if ($ff == $tf) {
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//// $continue = FALSE;
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//// }
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//// }
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//// if (in_array($ff, $to_feed)) {
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//// $continue = FALSE;
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//// }
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//// }
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//
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// if ($continue) {
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// feedapi_node_discussion_write_record($node->nid, $to_nid);
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//
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//// $promoted = db_result(db_query("SELECT promote FROM {node} WHERE nid = %d", $to_nid));
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// $promoted = node_load($to_nid);
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// if ($promoted->promote == 0 /* && strlen($promoted->teaser > 40) */ ) {
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// db_query("UPDATE {node} SET created = %d, promote = 1 WHERE nid = %d", time(), $to_nid);
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// }
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// }
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// }
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// }
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// }
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//// }
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//// }
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//}
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function feedapi_node_discussion_feedapi_node_discussion(&$node, $op, $links) {
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switch ($op) {
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case 'insert':
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case 'update':
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foreach ($links as $link) {
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// If this is a valid url to an item which was saved before.
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$to = _feedapi_node_discussion_item_exists($link);
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$to_nid = $to['nid'];
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if (!$to_nid) {
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continue;
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}
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if ($to_nid == $node->nid) {
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continue;
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}
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// Check whether this discussion was saved before.
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$result = db_result(db_query("SELECT fid FROM {feedapi_node_discussion} WHERE fid = %d AND tid = %d", $node->nid, $to_nid));
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if ($result === FALSE) {
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// Get feed nid for both from item and to item.
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// $from_feed = db_result(db_query("SELECT feed_nid FROM {feedapi_node_item} WHERE nid = %d", $node->nid));
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// $to_feed = db_result(db_query("SELECT feed_nid FROM {feedapi_node_item} WHERE nid = %d", $to_nid));
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$from_feed = $node->feedapi->feed_nid;
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$to_feed = $to['feed_nid'];
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if ($from_feed == $to_feed) {
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continue;
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}
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feedapi_node_discussion_write_record($node->nid, $to_nid);
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// $promoted = db_result(db_query("SELECT promote FROM {node} WHERE nid = %d", $to_nid));
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// $promoted = node_load($to_nid);
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// if ($promoted->promote == 0 /* && strlen($promoted->teaser > 40) */ ) {
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// db_query("UPDATE {node} SET promote = 1 WHERE nid = %d", $to_nid);
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// }
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}
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}
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break;
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}
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}
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