--- a/punbb/include/search_idx.php Sun Sep 02 11:00:57 2007 -0400
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,231 +0,0 @@
-<?php
-/***********************************************************************
-
- Copyright (C) 2002-2005 Rickard Andersson (rickard@punbb.org)
-
- This file is part of PunBB.
-
- PunBB is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published
- by the Free Software Foundation; either version 2 of the License,
- or (at your option) any later version.
-
- PunBB is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- MA 02111-1307 USA
-
-************************************************************************/
-
-
-// The contents of this file are very much inspired by the file functions_search.php
-// from the phpBB Group forum software phpBB2 (http://www.phpbb.com).
-
-
-// Make sure no one attempts to run this script "directly"
-if (!defined('PUN'))
- exit;
-
-
-//
-// "Cleans up" a text string and returns an array of unique words
-// This function depends on the current locale setting
-//
-function split_words($text)
-{
- global $pun_user;
- static $noise_match, $noise_replace, $stopwords;
-
- if (empty($noise_match))
- {
- $noise_match = array('[quote', '[code', '[url', '[img', '[email', '[color', '[colour', 'quote]', 'code]', 'url]', 'img]', 'email]', 'color]', 'colour]', '^', '$', '&', '(', ')', '<', '>', '`', '\'', '"', '|', ',', '@', '_', '?', '%', '~', '+', '[', ']', '{', '}', ':', '\\', '/', '=', '#', ';', '!', '*');
- $noise_replace = array('', '', '', '', '', '', '', '', '', '', '', '', '', '', ' ', ' ', ' ', ' ', ' ', ' ', ' ', '', '', ' ', ' ', ' ', ' ', '', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', '' , ' ', ' ', ' ', ' ', ' ', ' ');
-
- $stopwords = (array)@file(PUN_ROOT.'lang/'.$pun_user['language'].'/stopwords.txt');
- $stopwords = array_map('trim', $stopwords);
- }
-
- // Clean up
- $patterns[] = '#&[\#a-z0-9]+?;#i';
- $patterns[] = '#\b[\w]+:\/\/[a-z0-9\.\-]+(\/[a-z0-9\?\.%_\-\+=&\/~]+)?#';
- $patterns[] = '#\[\/?[a-z\*=\+\-]+(\:?[0-9a-z]+)?:[a-z0-9]{10,}(\:[a-z0-9]+)?=?.*?\]#';
- $text = preg_replace($patterns, ' ', ' '.strtolower($text).' ');
-
- // Filter out junk
- $text = str_replace($noise_match, $noise_replace, $text);
-
- // Strip out extra whitespace between words
- $text = trim(preg_replace('#\s+#', ' ', $text));
-
- // Fill an array with all the words
- $words = explode(' ', $text);
-
- if (!empty($words))
- {
- while (list($i, $word) = @each($words))
- {
- $words[$i] = trim($word, '.');
- $num_chars = pun_strlen($word);
-
- if ($num_chars < 3 || $num_chars > 20 || in_array($word, $stopwords))
- unset($words[$i]);
- }
- }
-
- return array_unique($words);
-}
-
-
-//
-// Updates the search index with the contents of $post_id (and $subject)
-//
-function update_search_index($mode, $post_id, $message, $subject = null)
-{
- global $db_type, $pun_db;
-
- // Split old and new post/subject to obtain array of 'words'
- $words_message = split_words($message);
- $words_subject = ($subject) ? split_words($subject) : array();
-
- if ($mode == 'edit')
- {
- $result = $pun_db->query('SELECT w.id, w.word, m.subject_match FROM '.$pun_db->prefix.'search_words AS w INNER JOIN '.$pun_db->prefix.'search_matches AS m ON w.id=m.word_id WHERE m.post_id='.$post_id, true) or error('Unable to fetch search index words', __FILE__, __LINE__, $pun_db->error());
-
- // Declare here to stop array_keys() and array_diff() from complaining if not set
- $cur_words['post'] = array();
- $cur_words['subject'] = array();
-
- while ($row = $pun_db->fetch_row($result))
- {
- $match_in = ($row[2]) ? 'subject' : 'post';
- $cur_words[$match_in][$row[1]] = $row[0];
- }
-
- $pun_db->free_result($result);
-
- $words['add']['post'] = array_diff($words_message, array_keys($cur_words['post']));
- $words['add']['subject'] = array_diff($words_subject, array_keys($cur_words['subject']));
- $words['del']['post'] = array_diff(array_keys($cur_words['post']), $words_message);
- $words['del']['subject'] = array_diff(array_keys($cur_words['subject']), $words_subject);
- }
- else
- {
- $words['add']['post'] = $words_message;
- $words['add']['subject'] = $words_subject;
- $words['del']['post'] = array();
- $words['del']['subject'] = array();
- }
-
- unset($words_message);
- unset($words_subject);
-
- // Get unique words from the above arrays
- $unique_words = array_unique(array_merge($words['add']['post'], $words['add']['subject']));
-
- if (!empty($unique_words))
- {
- $result = $pun_db->query('SELECT id, word FROM '.$pun_db->prefix.'search_words WHERE word IN('.implode(',', preg_replace('#^(.*)$#', '\'\1\'', $unique_words)).')', true) or error('Unable to fetch search index words', __FILE__, __LINE__, $pun_db->error());
-
- $word_ids = array();
- while ($row = $pun_db->fetch_row($result))
- $word_ids[$row[1]] = $row[0];
-
- $pun_db->free_result($result);
-
- $new_words = array_diff($unique_words, array_keys($word_ids));
- unset($unique_words);
-
- if (!empty($new_words))
- {
- switch ($db_type)
- {
- case 'mysql':
- case 'mysqli':
- $pun_db->query('INSERT INTO '.$pun_db->prefix.'search_words (word) VALUES'.implode(',', preg_replace('#^(.*)$#', '(\'\1\')', $new_words))) or error('Unable to insert search index words', __FILE__, __LINE__, $pun_db->error());
- break;
-
- default:
- while (list(, $word) = @each($new_words))
- $pun_db->query('INSERT INTO '.$pun_db->prefix.'search_words (word) VALUES(\''.$word.'\')') or error('Unable to insert search index words', __FILE__, __LINE__, $pun_db->error());
- break;
- }
- }
-
- unset($new_words);
- }
-
- // Delete matches (only if editing a post)
- while (list($match_in, $wordlist) = @each($words['del']))
- {
- $subject_match = ($match_in == 'subject') ? 1 : 0;
-
- if (!empty($wordlist))
- {
- $sql = '';
- while (list(, $word) = @each($wordlist))
- $sql .= (($sql != '') ? ',' : '').$cur_words[$match_in][$word];
-
- $pun_db->query('DELETE FROM '.$pun_db->prefix.'search_matches WHERE word_id IN('.$sql.') AND post_id='.$post_id.' AND subject_match='.$subject_match) or error('Unable to delete search index word matches', __FILE__, __LINE__, $pun_db->error());
- }
- }
-
- // Add new matches
- while (list($match_in, $wordlist) = @each($words['add']))
- {
- $subject_match = ($match_in == 'subject') ? 1 : 0;
-
- if (!empty($wordlist))
- $pun_db->query('INSERT INTO '.$pun_db->prefix.'search_matches (post_id, word_id, subject_match) SELECT '.$post_id.', id, '.$subject_match.' FROM '.$pun_db->prefix.'search_words WHERE word IN('.implode(',', preg_replace('#^(.*)$#', '\'\1\'', $wordlist)).')') or error('Unable to insert search index word matches', __FILE__, __LINE__, $pun_db->error());
- }
-
- unset($words);
-}
-
-
-//
-// Strip search index of indexed words in $post_ids
-//
-function strip_search_index($post_ids)
-{
- global $db_type, $pun_db;
-
- switch ($db_type)
- {
- case 'mysql':
- case 'mysqli':
- {
- $result = $pun_db->query('SELECT word_id FROM '.$pun_db->prefix.'search_matches WHERE post_id IN('.$post_ids.') GROUP BY word_id') or error('Unable to fetch search index word match', __FILE__, __LINE__, $pun_db->error());
-
- if ($pun_db->num_rows($result))
- {
- $word_ids = '';
- while ($row = $pun_db->fetch_row($result))
- $word_ids .= ($word_ids != '') ? ','.$row[0] : $row[0];
-
- $result = $pun_db->query('SELECT word_id FROM '.$pun_db->prefix.'search_matches WHERE word_id IN('.$word_ids.') GROUP BY word_id HAVING COUNT(word_id)=1') or error('Unable to fetch search index word match', __FILE__, __LINE__, $pun_db->error());
-
- if ($pun_db->num_rows($result))
- {
- $word_ids = '';
- while ($row = $pun_db->fetch_row($result))
- $word_ids .= ($word_ids != '') ? ','.$row[0] : $row[0];
-
- $pun_db->query('DELETE FROM '.$pun_db->prefix.'search_words WHERE id IN('.$word_ids.')') or error('Unable to delete search index word', __FILE__, __LINE__, $pun_db->error());
- }
- }
-
- break;
- }
-
- default:
- $pun_db->query('DELETE FROM '.$pun_db->prefix.'search_words WHERE id IN(SELECT word_id FROM '.$pun_db->prefix.'search_matches WHERE word_id IN(SELECT word_id FROM '.$pun_db->prefix.'search_matches WHERE post_id IN('.$post_ids.') GROUP BY word_id) GROUP BY word_id HAVING COUNT(word_id)=1)') or error('Unable to delete from search index', __FILE__, __LINE__, $pun_db->error());
- break;
- }
-
- $pun_db->query('DELETE FROM '.$pun_db->prefix.'search_matches WHERE post_id IN('.$post_ids.')') or error('Unable to delete search index word match', __FILE__, __LINE__, $pun_db->error());
-}