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<?php |
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/** |
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* |
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* Precise Similar Topics |
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* |
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* @copyright (c) 2013 Matt Friedman |
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* @license GNU General Public License, version 2 (GPL-2.0) |
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* |
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*/ |
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namespace vse\similartopics\core; |
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class similar_topics |
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{ |
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/** @var \phpbb\auth\auth */ |
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protected $auth; |
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/** @var \phpbb\cache\service */ |
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protected $cache; |
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/** @var \phpbb\config\config */ |
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protected $config; |
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/** @var \phpbb\db\driver\driver_interface */ |
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protected $db; |
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/** @var \phpbb\event\dispatcher_interface */ |
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protected $dispatcher; |
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/** @var \phpbb\pagination */ |
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protected $pagination; |
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/** @var \phpbb\request\request */ |
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protected $request; |
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/** @var \phpbb\template\template */ |
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protected $template; |
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/** @var \phpbb\user */ |
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protected $user; |
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/** @var \phpbb\content_visibility */ |
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protected $content_visibility; |
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/** @var string phpBB root path */ |
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protected $root_path; |
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/** @var string PHP file extension */ |
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protected $php_ext; |
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/** |
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* Constructor |
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* |
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* @access public |
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* @param \phpbb\auth\auth $auth |
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* @param \phpbb\cache\service $cache |
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* @param \phpbb\config\config $config |
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* @param \phpbb\db\driver\driver_interface $db |
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* @param \phpbb\event\dispatcher_interface $dispatcher |
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* @param \phpbb\pagination $pagination |
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* @param \phpbb\request\request $request |
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* @param \phpbb\template\template $template |
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* @param \phpbb\user $user |
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* @param \phpbb\content_visibility $content_visibility |
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* @param string $root_path |
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* @param string $php_ext |
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*/ |
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public function __construct(\phpbb\auth\auth $auth, \phpbb\cache\service $cache, \phpbb\config\config $config, \phpbb\db\driver\driver_interface $db, \phpbb\event\dispatcher_interface $dispatcher, \phpbb\pagination $pagination, \phpbb\request\request $request, \phpbb\template\template $template, \phpbb\user $user, \phpbb\content_visibility $content_visibility, $root_path, $php_ext) |
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{ |
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$this->auth = $auth; |
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$this->cache = $cache; |
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$this->config = $config; |
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$this->db = $db; |
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$this->dispatcher = $dispatcher; |
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$this->pagination = $pagination; |
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$this->request = $request; |
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$this->template = $template; |
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$this->user = $user; |
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$this->content_visibility = $content_visibility; |
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$this->root_path = $root_path; |
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$this->php_ext = $php_ext; |
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} |
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/** |
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* Is similar topics available? |
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* |
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* @access public |
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* @return bool True if available, false otherwise |
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*/ |
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public function is_available() |
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{ |
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return $this->is_enabled() && $this->is_viewable() && ($this->is_mysql() || $this->is_postgres()); |
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} |
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/** |
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* Is similar topics configured? |
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* |
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* @access public |
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* @return bool True if configured, false otherwise |
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*/ |
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public function is_enabled() |
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{ |
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return !empty($this->config['similar_topics']) && !empty($this->config['similar_topics_limit']); |
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} |
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/** |
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* Is similar topics viewable bu the user? |
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* |
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* @access public |
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* @return bool True if viewable, false otherwise |
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*/ |
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public function is_viewable() |
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{ |
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return !empty($this->user->data['user_similar_topics']) && $this->auth->acl_get('u_similar_topics'); |
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} |
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/** |
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* Get similar topics by matching topic titles |
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* |
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* NOTE: Currently requires MySQL due to the use of FULLTEXT indexes |
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* and MATCH and AGAINST and UNIX_TIMESTAMP. MySQL FULLTEXT has built-in |
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* English ignore words. We use phpBB's ignore words for non-English |
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* languages. We also remove any admin-defined special ignore words. |
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* |
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* @access public |
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* @param array $topic_data Array with topic data |
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*/ |
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public function display_similar_topics($topic_data) |
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{ |
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// If the forum should not display similar topics, no need to continue |
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if ($topic_data['similar_topics_hide']) |
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{ |
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return; |
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} |
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$topic_title = $this->clean_topic_title($topic_data['topic_title']); |
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// If the cleaned up topic_title is empty, no need to continue |
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if (empty($topic_title)) |
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{ |
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return; |
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} |
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// Get stored sensitivity value and divide by 10. In query it should be a number between 0.0 to 1.0. |
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$sensitivity = $this->config->offsetExists('similar_topics_sense') ? $this->config['similar_topics_sense'] / 10 : '0.5'; |
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$select = $where = $unix_ts = ''; |
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if ($this->is_postgres()) |
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{ |
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$ts_query_text = $this->db->sql_escape(str_replace(' ', '|', $topic_title)); |
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$ts_name = $this->config['similar_topics_postgres_ts_name']; |
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$select = "f.forum_id, f.forum_name, t.*, |
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ts_rank_cd(to_tsvector('$ts_name', t.topic_title), '$ts_query_text', 32) AS score"; |
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$where = "ts_rank_cd(to_tsvector('$ts_name', t.topic_title), '$ts_query_text', 32) >= " . (float) $sensitivity ; |
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$unix_ts = 'extract(epoch from current_timestamp)::integer'; |
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} else { |
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$select = "f.forum_id, f.forum_name, t.*, |
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MATCH (t.topic_title) AGAINST ('" . $this->db->sql_escape($topic_title) . "') AS score"; |
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$where = "MATCH (t.topic_title) AGAINST ('" . $this->db->sql_escape($topic_title) . "') >= " . (float) $sensitivity; |
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$unix_ts = 'UNIX_TIMESTAMP()'; |
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} |
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// Similar Topics query |
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$sql_array = array( |
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'SELECT' => $select, |
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'FROM' => array( |
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TOPICS_TABLE => 't', |
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), |
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'LEFT_JOIN' => array( |
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array( |
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'FROM' => array(FORUMS_TABLE => 'f'), |
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'ON' => 'f.forum_id = t.forum_id', |
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), |
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), |
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'WHERE' => $where . ' |
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AND t.topic_status <> ' . ITEM_MOVED . ' |
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AND t.topic_visibility = ' . ITEM_APPROVED . ' |
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AND t.topic_time > (' . $unix_ts . ' - ' . $this->config['similar_topics_time'] . ') |
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AND t.topic_id <> ' . (int) $topic_data['topic_id'], |
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); |
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// Add topic tracking data to the query (only if query caching is off) |
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if ($this->user->data['is_registered'] && $this->config['load_db_lastread'] && !$this->config['similar_topics_cache']) |
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{ |
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$sql_array['LEFT_JOIN'][] = array('FROM' => array(TOPICS_TRACK_TABLE => 'tt'), 'ON' => 'tt.topic_id = t.topic_id AND tt.user_id = ' . $this->user->data['user_id']); |
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$sql_array['LEFT_JOIN'][] = array('FROM' => array(FORUMS_TRACK_TABLE => 'ft'), 'ON' => 'ft.forum_id = f.forum_id AND ft.user_id = ' . $this->user->data['user_id']); |
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$sql_array['SELECT'] .= ', tt.mark_time, ft.mark_time as f_mark_time'; |
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} |
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else if ($this->config['load_anon_lastread'] || $this->user->data['is_registered']) |
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{ |
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// Cookie based tracking copied from search.php |
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$tracking_topics = $this->request->variable($this->config['cookie_name'] . '_track', '', true, \phpbb\request\request_interface::COOKIE); |
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$tracking_topics = $tracking_topics ? tracking_unserialize($tracking_topics) : array(); |
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} |
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// We need to exclude passworded forums so we do not leak the topic title |
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$passworded_forums = $this->user->get_passworded_forums(); |
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// See if the admin set this forum to only search a specific group of other forums, and include them |
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if (!empty($topic_data['similar_topic_forums'])) |
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{ |
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// Remove any passworded forums from this group of forums we will be searching |
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$included_forums = array_diff(json_decode($topic_data['similar_topic_forums'], true), $passworded_forums); |
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// if there's nothing left to display (user has no access to the forums we want to search) |
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if (empty($included_forums)) |
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{ |
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return; |
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} |
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$sql_array['WHERE'] .= ' AND ' . $this->db->sql_in_set('f.forum_id', $included_forums); |
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} |
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// Otherwise exclude any ignored forums |
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else |
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{ |
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// Remove any passworded forums |
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if (count($passworded_forums)) |
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{ |
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$sql_array['WHERE'] .= ' AND ' . $this->db->sql_in_set('f.forum_id', $passworded_forums, true); |
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} |
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$sql_array['WHERE'] .= ' AND f.similar_topics_ignore = 0'; |
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} |
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$sql_array['ORDER_BY'] = 'score DESC, t.topic_time DESC'; |
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/** |
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* Event to modify the sql_array for similar topics |
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* |
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* @event vse.similartopics.get_topic_data |
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* @var array sql_array SQL array to get similar topics data |
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* @since 1.3.0 |
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*/ |
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$vars = array('sql_array'); |
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extract($this->dispatcher->trigger_event('vse.similartopics.get_topic_data', compact($vars))); |
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$rowset = array(); |
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$sql = $this->db->sql_build_query('SELECT', $sql_array); |
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$result = $this->db->sql_query_limit($sql, $this->config['similar_topics_limit'], 0, $this->config['similar_topics_cache']); |
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while ($row = $this->db->sql_fetchrow($result)) |
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{ |
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$rowset[(int) $row['topic_id']] = $row; |
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} |
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$this->db->sql_freeresult($result); |
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// Grab icons |
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$icons = $this->cache->obtain_icons(); |
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/** |
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* Modify the rowset data for similar topics |
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* |
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* @event vse.similartopics.modify_rowset |
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* @var array rowset Array with the search results data |
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* @since 1.4.2 |
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*/ |
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$vars = array('rowset'); |
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extract($this->dispatcher->trigger_event('vse.similartopics.modify_rowset', compact($vars))); |
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foreach ($rowset as $row) |
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{ |
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$similar_forum_id = (int) $row['forum_id']; |
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$similar_topic_id = (int) $row['topic_id']; |
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if ($this->auth->acl_get('f_read', $similar_forum_id)) |
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{ |
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// Get topic tracking info |
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if ($this->user->data['is_registered'] && $this->config['load_db_lastread'] && !$this->config['similar_topics_cache']) |
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{ |
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$topic_tracking_info = get_topic_tracking($similar_forum_id, $similar_topic_id, $rowset, array($similar_forum_id => $row['f_mark_time'])); |
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} |
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else if ($this->config['load_anon_lastread'] || $this->user->data['is_registered']) |
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{ |
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$topic_tracking_info = get_complete_topic_tracking($similar_forum_id, $similar_topic_id); |
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if (!$this->user->data['is_registered']) |
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{ |
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$this->user->data['user_lastmark'] = isset($tracking_topics['l']) ? ((int) base_convert($tracking_topics['l'], 36, 10) + (int) $this->config['board_startdate']) : 0; |
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} |
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} |
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// Replies |
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$replies = $this->content_visibility->get_count('topic_posts', $row, $similar_forum_id) - 1; |
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// Get folder img, topic status/type related information |
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$folder_img = $folder_alt = $topic_type = ''; |
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$unread_topic = isset($topic_tracking_info[$similar_topic_id]) && $row['topic_last_post_time'] > $topic_tracking_info[$similar_topic_id]; |
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topic_status($row, $replies, $unread_topic, $folder_img, $folder_alt, $topic_type); |
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$topic_unapproved = $row['topic_visibility'] == ITEM_UNAPPROVED && $this->auth->acl_get('m_approve', $similar_forum_id); |
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290
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$posts_unapproved = $row['topic_visibility'] == ITEM_APPROVED && $row['topic_posts_unapproved'] && $this->auth->acl_get('m_approve', $similar_forum_id); |
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291
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$u_mcp_queue = ($topic_unapproved || $posts_unapproved) ? append_sid("{$this->root_path}mcp.{$this->php_ext}", 'i=queue&mode=' . ($topic_unapproved ? 'approve_details' : 'unapproved_posts') . "&t=$similar_topic_id", true, $this->user->session_id) : ''; |
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292
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|
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293
|
|
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$base_url = append_sid("{$this->root_path}viewtopic.{$this->php_ext}", 'f=' . $similar_forum_id . '&t=' . $similar_topic_id); |
|
294
|
|
|
|
|
295
|
|
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$topic_row = array( |
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296
|
|
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'TOPIC_AUTHOR_FULL' => get_username_string('full', $row['topic_poster'], $row['topic_first_poster_name'], $row['topic_first_poster_colour']), |
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297
|
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'FIRST_POST_TIME' => $this->user->format_date($row['topic_time']), |
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298
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|
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'LAST_POST_TIME' => $this->user->format_date($row['topic_last_post_time']), |
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299
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'LAST_POST_AUTHOR_FULL' => get_username_string('full', $row['topic_last_poster_id'], $row['topic_last_poster_name'], $row['topic_last_poster_colour']), |
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300
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301
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'TOPIC_REPLIES' => $replies, |
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302
|
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'TOPIC_VIEWS' => $row['topic_views'], |
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303
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|
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'TOPIC_TITLE' => censor_text($row['topic_title']), |
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304
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'FORUM_TITLE' => $row['forum_name'], |
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305
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|
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306
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|
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'TOPIC_IMG_STYLE' => $folder_img, |
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307
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'TOPIC_FOLDER_IMG' => $this->user->img($folder_img, $folder_alt), |
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308
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'TOPIC_FOLDER_IMG_ALT' => $this->user->lang($folder_alt), |
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309
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310
|
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'TOPIC_ICON_IMG' => (!empty($icons[$row['icon_id']])) ? $icons[$row['icon_id']]['img'] : '', |
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311
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'TOPIC_ICON_IMG_WIDTH' => (!empty($icons[$row['icon_id']])) ? $icons[$row['icon_id']]['width'] : '', |
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312
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|
|
'TOPIC_ICON_IMG_HEIGHT' => (!empty($icons[$row['icon_id']])) ? $icons[$row['icon_id']]['height'] : '', |
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313
|
|
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'ATTACH_ICON_IMG' => ($this->auth->acl_get('u_download') && $this->auth->acl_get('f_download', $similar_forum_id) && $row['topic_attachment']) ? $this->user->img('icon_topic_attach', $this->user->lang('TOTAL_ATTACHMENTS')) : '', |
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314
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'UNAPPROVED_IMG' => ($topic_unapproved || $posts_unapproved) ? $this->user->img('icon_topic_unapproved', $topic_unapproved ? 'TOPIC_UNAPPROVED' : 'POSTS_UNAPPROVED') : '', |
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315
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|
|
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316
|
|
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'S_UNREAD_TOPIC' => $unread_topic, |
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317
|
|
|
'S_TOPIC_REPORTED' => !empty($row['topic_reported']) && $this->auth->acl_get('m_report', $similar_forum_id), |
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318
|
|
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'S_TOPIC_UNAPPROVED' => $topic_unapproved, |
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319
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|
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'S_POSTS_UNAPPROVED' => $posts_unapproved, |
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320
|
|
|
'S_HAS_POLL' => (bool) $row['poll_start'], |
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321
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|
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|
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322
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|
|
'U_NEWEST_POST' => append_sid("{$this->root_path}viewtopic.{$this->php_ext}", 'f=' . $similar_forum_id . '&t=' . $similar_topic_id . '&view=unread') . '#unread', |
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323
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|
|
'U_LAST_POST' => append_sid("{$this->root_path}viewtopic.{$this->php_ext}", 'f=' . $similar_forum_id . '&t=' . $similar_topic_id . '&p=' . $row['topic_last_post_id']) . '#p' . $row['topic_last_post_id'], |
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324
|
|
|
'U_VIEW_TOPIC' => append_sid("{$this->root_path}viewtopic.{$this->php_ext}", 'f=' . $similar_forum_id . '&t=' . $similar_topic_id), |
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325
|
|
|
'U_VIEW_FORUM' => append_sid("{$this->root_path}viewforum.{$this->php_ext}", 'f=' . $similar_forum_id), |
|
326
|
|
|
'U_MCP_REPORT' => append_sid("{$this->root_path}mcp.{$this->php_ext}", 'i=reports&mode=reports&f=' . $similar_forum_id . '&t=' . $similar_topic_id, true, $this->user->session_id), |
|
327
|
|
|
'U_MCP_QUEUE' => $u_mcp_queue, |
|
328
|
|
|
); |
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329
|
|
|
|
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330
|
|
|
/** |
|
331
|
|
|
* Event to modify the similar topics template block |
|
332
|
|
|
* |
|
333
|
|
|
* @event vse.similartopics.modify_topicrow |
|
334
|
|
|
* @var array row Array with similar topic data |
|
335
|
|
|
* @var array topic_row Template block array |
|
336
|
|
|
* @since 1.3.0 |
|
337
|
|
|
*/ |
|
338
|
|
|
$vars = array('row', 'topic_row'); |
|
339
|
|
|
extract($this->dispatcher->trigger_event('vse.similartopics.modify_topicrow', compact($vars))); |
|
340
|
|
|
|
|
341
|
|
|
$this->template->assign_block_vars('similar', $topic_row); |
|
342
|
|
|
|
|
343
|
|
|
$this->pagination->generate_template_pagination($base_url, 'similar.pagination', 'start', $replies + 1, $this->config['posts_per_page'], 1, true, true); |
|
344
|
|
|
} |
|
345
|
|
|
} |
|
346
|
|
|
|
|
347
|
|
|
$this->user->add_lang_ext('vse/similartopics', 'similar_topics'); |
|
348
|
|
|
|
|
349
|
|
|
$this->template->assign_vars(array( |
|
350
|
|
|
'L_SIMILAR_TOPICS' => $this->user->lang('SIMILAR_TOPICS'), |
|
351
|
|
|
'NEWEST_POST_IMG' => $this->user->img('icon_topic_newest', 'VIEW_NEWEST_POST'), |
|
352
|
|
|
'LAST_POST_IMG' => $this->user->img('icon_topic_latest', 'VIEW_LATEST_POST'), |
|
353
|
|
|
'REPORTED_IMG' => $this->user->img('icon_topic_reported', 'TOPIC_REPORTED'), |
|
354
|
|
|
'POLL_IMG' => $this->user->img('icon_topic_poll', 'TOPIC_POLL'), |
|
355
|
|
|
'S_PST_BRANCH' => phpbb_version_compare(max($this->config['phpbb_version'], PHPBB_VERSION), '3.2.0-dev', '<') ? '31x' : '32x', |
|
356
|
|
|
)); |
|
357
|
|
|
} |
|
358
|
|
|
|
|
359
|
|
|
/** |
|
360
|
|
|
* Clean topic title (and if needed, ignore-words) |
|
361
|
|
|
* |
|
362
|
|
|
* @access public |
|
363
|
|
|
* @param string $text The topic title |
|
364
|
|
|
* @return string The topic title |
|
365
|
|
|
*/ |
|
366
|
|
|
public function clean_topic_title($text) |
|
367
|
|
|
{ |
|
368
|
|
|
// Strip quotes, ampersands |
|
369
|
|
|
$text = str_replace(array('"', '&'), '', $text); |
|
370
|
|
|
|
|
371
|
|
|
if (($this->is_mysql() && !$this->english_lang()) || $this->has_ignore_words() || ($this->is_postgres() && $this->config['similar_topics_postgres_ts_name'] == 'simple')) |
|
372
|
|
|
{ |
|
373
|
|
|
$text = $this->strip_stop_words($text); |
|
374
|
|
|
} |
|
375
|
|
|
|
|
376
|
|
|
return $text; |
|
377
|
|
|
} |
|
378
|
|
|
|
|
379
|
|
|
/** |
|
380
|
|
|
* Remove any non-english and/or custom defined ignore-words |
|
381
|
|
|
* |
|
382
|
|
|
* @access protected |
|
383
|
|
|
* @param string $text The topic title |
|
384
|
|
|
* @return string The topic title |
|
385
|
|
|
*/ |
|
386
|
|
|
protected function strip_stop_words($text) |
|
387
|
|
|
{ |
|
388
|
|
|
$words = array(); |
|
389
|
|
|
|
|
390
|
|
|
// If non-English, look for a list of stop-words to be ignored |
|
391
|
|
|
// in either the core or the extension (deprecated from core) |
|
392
|
|
|
if (!$this->english_lang()) |
|
393
|
|
|
{ |
|
394
|
|
|
if (file_exists($search_ignore_words = "{$this->user->lang_path}{$this->user->lang_name}/search_ignore_words.{$this->php_ext}") || |
|
395
|
|
|
file_exists($search_ignore_words = "{$this->root_path}ext/vse/similartopics/language/{$this->user->lang_name}/search_ignore_words.{$this->php_ext}")) |
|
396
|
|
|
{ |
|
397
|
|
|
include($search_ignore_words); |
|
398
|
|
|
} |
|
399
|
|
|
} |
|
400
|
|
|
|
|
401
|
|
|
if ($this->has_ignore_words()) |
|
402
|
|
|
{ |
|
403
|
|
|
// Merge any custom defined ignore words from the ACP to the stop-words array |
|
404
|
|
|
$words = array_merge($this->make_word_array($this->config['similar_topics_words']), $words); |
|
405
|
|
|
} |
|
406
|
|
|
|
|
407
|
|
|
// Remove stop-words from the topic title text |
|
408
|
|
|
$words = array_diff($this->make_word_array($text), $words); |
|
409
|
|
|
|
|
410
|
|
|
// Convert our words array back to a string |
|
411
|
|
|
return implode(' ', $words); |
|
412
|
|
|
} |
|
413
|
|
|
|
|
414
|
|
|
/** |
|
415
|
|
|
* Helper function to split string into an array of words |
|
416
|
|
|
* |
|
417
|
|
|
* @access protected |
|
418
|
|
|
* @param string $text String of plain text words |
|
419
|
|
|
* @return array Array of plaintext words |
|
420
|
|
|
*/ |
|
421
|
|
|
protected function make_word_array($text) |
|
422
|
|
|
{ |
|
423
|
|
|
// Strip out any non-alpha-numeric characters using PCRE regex syntax |
|
424
|
|
|
$text = trim(preg_replace('#[^\p{L}\p{N}]+#u', ' ', $text)); |
|
425
|
|
|
|
|
426
|
|
|
$words = explode(' ', utf8_strtolower($text)); |
|
427
|
|
|
foreach ($words as $key => $word) |
|
428
|
|
|
{ |
|
429
|
|
|
// Strip words of 2 characters or less |
|
430
|
|
|
if (utf8_strlen(trim($word)) < 3) |
|
431
|
|
|
{ |
|
432
|
|
|
unset($words[$key]); |
|
433
|
|
|
} |
|
434
|
|
|
} |
|
435
|
|
|
|
|
436
|
|
|
return $words; |
|
437
|
|
|
} |
|
438
|
|
|
|
|
439
|
|
|
/** |
|
440
|
|
|
* Check if English is the current user's language |
|
441
|
|
|
* |
|
442
|
|
|
* @access protected |
|
443
|
|
|
* @return bool True if lang is 'en' or 'en_us', false otherwise |
|
444
|
|
|
*/ |
|
445
|
|
|
protected function english_lang() |
|
446
|
|
|
{ |
|
447
|
|
|
return ($this->user->lang_name === 'en' || $this->user->lang_name === 'en_us'); |
|
448
|
|
|
} |
|
449
|
|
|
|
|
450
|
|
|
/** |
|
451
|
|
|
* Check if custom ignore words have been defined for similar topics |
|
452
|
|
|
* |
|
453
|
|
|
* @access protected |
|
454
|
|
|
* @return bool True or false |
|
455
|
|
|
*/ |
|
456
|
|
|
protected function has_ignore_words() |
|
457
|
|
|
{ |
|
458
|
|
|
return !empty($this->config['similar_topics_words']); |
|
459
|
|
|
} |
|
460
|
|
|
|
|
461
|
|
|
/** |
|
462
|
|
|
* Check if the database layer is MySQL4 or later |
|
463
|
|
|
* |
|
464
|
|
|
* @access protected |
|
465
|
|
|
* @return bool True is MySQL4 or later, false otherwise |
|
466
|
|
|
*/ |
|
467
|
|
|
protected function is_mysql() |
|
468
|
|
|
{ |
|
469
|
|
|
return ($this->db->get_sql_layer() === 'mysql4' || $this->db->get_sql_layer() === 'mysqli'); |
|
470
|
|
|
} |
|
471
|
|
|
|
|
472
|
|
|
/** |
|
473
|
|
|
* Check if the database is using PostgreSQL |
|
474
|
|
|
* |
|
475
|
|
|
* @access public |
|
476
|
|
|
* @return bool True if is postgresql, false otherwise |
|
477
|
|
|
*/ |
|
478
|
|
|
protected function is_postgres() |
|
479
|
|
|
{ |
|
480
|
|
|
return ($this->db->get_sql_layer() === 'postgres'); |
|
481
|
|
|
} |
|
482
|
|
|
} |
|
483
|
|
|
|
iMattPro /
similartopics
Loading history...
This check looks for variable assignements that are either overwritten by other assignments or where the variable is not used subsequently.
Both the
$myVarassignment in line 1 and the$higherassignment in line 2 are dead. The first because$myVaris never used and the second because$higheris always overwritten for every possible time line.