<?php
-# Copyright (C) 2004 Brion Vibber <brion@pobox.com>
-# http://www.mediawiki.org/
-#
-# This program 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.
-#
-# This program 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.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-# http://www.gnu.org/copyleft/gpl.html
-
/**
+ * MySQL search engine
+ *
+ * Copyright (C) 2004 Brion Vibber <brion@pobox.com>
+ * http://www.mediawiki.org/
+ *
+ * This program 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.
+ *
+ * This program 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
* @file
* @ingroup Search
*/
*/
class SearchMySQL extends SearchEngine {
var $strictMatching = true;
+ static $mMinSearchLength;
- /** @todo document */
+ /**
+ * Creates an instance of this class
+ * @param $db DatabaseMysql: database object
+ */
function __construct( $db ) {
- $this->db = $db;
+ parent::__construct( $db );
}
/**
// fulltext engine.
// For Chinese this also inserts spaces between adjacent Han characters.
$strippedVariants = array_map(
- array( $wgContLang, 'stripForSearch' ),
+ array( $wgContLang, 'normalizeForSearch' ),
$variants );
// Some languages such as Chinese force all variants to a canonical
if( count( $strippedVariants) > 1 )
$searchon .= '(';
foreach( $strippedVariants as $stripped ) {
+ $stripped = $this->normalizeText( $stripped );
if( $nonQuoted && strpos( $stripped, ' ' ) !== false ) {
// Hack for Chinese: we need to toss in quotes for
- // multiple-character phrases since stripForSearch()
+ // multiple-character phrases since normalizeForSearch()
// added spaces between them to make word breaks.
$stripped = '"' . trim( $stripped ) . '"';
}
}
protected function searchInternal( $term, $fulltext ) {
- global $wgSearchMySQLTotalHits;
+ global $wgCountTotalSearchHits;
$filteredTerm = $this->filter( $term );
$resultSet = $this->db->query( $this->getQuery( $filteredTerm, $fulltext ) );
$total = null;
- if( $wgSearchMySQLTotalHits ) {
+ if( $wgCountTotalSearchHits ) {
$totalResult = $this->db->query( $this->getCountQuery( $filteredTerm, $fulltext ) );
$row = $totalResult->fetchObject();
if( $row ) {
array( 'si_page' ),
array(
'si_page' => $id,
- 'si_title' => $title,
- 'si_text' => $text
+ 'si_title' => $this->normalizeText( $title ),
+ 'si_text' => $this->normalizeText( $text )
), __METHOD__ );
}
$dbw = wfGetDB( DB_MASTER );
$dbw->update( 'searchindex',
- array( 'si_title' => $title ),
+ array( 'si_title' => $this->normalizeText( $title ) ),
array( 'si_page' => $id ),
__METHOD__,
array( $dbw->lowPriorityOption() ) );
}
+
+ /**
+ * Converts some characters for MySQL's indexing to grok it correctly,
+ * and pads short words to overcome limitations.
+ */
+ function normalizeText( $string ) {
+ global $wgContLang;
+
+ wfProfileIn( __METHOD__ );
+
+ $out = parent::normalizeText( $string );
+
+ // MySQL fulltext index doesn't grok utf-8, so we
+ // need to fold cases and convert to hex
+ $out = preg_replace_callback(
+ "/([\\xc0-\\xff][\\x80-\\xbf]*)/",
+ array( $this, 'stripForSearchCallback' ),
+ $wgContLang->lc( $out ) );
+
+ // And to add insult to injury, the default indexing
+ // ignores short words... Pad them so we can pass them
+ // through without reconfiguring the server...
+ $minLength = $this->minSearchLength();
+ if( $minLength > 1 ) {
+ $n = $minLength - 1;
+ $out = preg_replace(
+ "/\b(\w{1,$n})\b/",
+ "$1u800",
+ $out );
+ }
+
+ // Periods within things like hostnames and IP addresses
+ // are also important -- we want a search for "example.com"
+ // or "192.168.1.1" to work sanely.
+ //
+ // MySQL's search seems to ignore them, so you'd match on
+ // "example.wikipedia.com" and "192.168.83.1" as well.
+ $out = preg_replace(
+ "/(\w)\.(\w|\*)/u",
+ "$1u82e$2",
+ $out );
+
+ wfProfileOut( __METHOD__ );
+
+ return $out;
+ }
+
+ /**
+ * Armor a case-folded UTF-8 string to get through MySQL's
+ * fulltext search without being mucked up by funny charset
+ * settings or anything else of the sort.
+ */
+ protected function stripForSearchCallback( $matches ) {
+ return 'u8' . bin2hex( $matches[1] );
+ }
+
+ /**
+ * Check MySQL server's ft_min_word_len setting so we know
+ * if we need to pad short words...
+ *
+ * @return int
+ */
+ protected function minSearchLength() {
+ if( is_null( self::$mMinSearchLength ) ) {
+ $sql = "SHOW GLOBAL VARIABLES LIKE 'ft\\_min\\_word\\_len'";
+
+ $dbr = wfGetDB( DB_SLAVE );
+ $result = $dbr->query( $sql );
+ $row = $result->fetchObject();
+ $result->free();
+
+ if( $row && $row->Variable_name == 'ft_min_word_len' ) {
+ self::$mMinSearchLength = intval( $row->Value );
+ } else {
+ self::$mMinSearchLength = 0;
+ }
+ }
+ return self::$mMinSearchLength;
+ }
}
/**
* @ingroup Search
*/
class MySQLSearchResultSet extends SqlSearchResultSet {
- function MySQLSearchResultSet( $resultSet, $terms, $totalHits=null ) {
+ function __construct( $resultSet, $terms, $totalHits=null ) {
parent::__construct( $resultSet, $terms );
$this->mTotalHits = $totalHits;
}
function getTotalHits() {
return $this->mTotalHits;
}
-}
\ No newline at end of file
+}
dépôts / lhc / web / wiklou.git / blobdiff