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<?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
/**
* Search engine hook for MySQL 4+
* @package MediaWiki
* @subpackage Search
*/
/**
* @package MediaWiki
* @subpackage Search
*/
class SearchMySQL4 extends SearchMySQL {
var $strictMatching = true;
/** @todo document */
function SearchMySQL4( &$db ) {
$this->db =& $db;
}
/** @todo document */
function parseQuery( $filteredText, $fulltext ) {
global $wgContLang;
$lc = SearchEngine::legalSearchChars();
$searchon = '';
$this->searchTerms = array();
# FIXME: This doesn't handle parenthetical expressions.
if( preg_match_all( '/([-+<>~]?)(([' . $lc . ']+)(\*?)|"[^"]*")/',
$filteredText, $m, PREG_SET_ORDER ) ) {
foreach( $m as $terms ) {
if( $searchon !== '' ) $searchon .= ' ';
if( $this->strictMatching && ($terms[1] == '') ) {
$terms[1] = '+';
}
$searchon .= $terms[1] . $wgContLang->stripForSearch( $terms[2] );
if( !empty( $terms[3] ) ) {
$regexp = preg_quote( $terms[3], '/' );
if( $terms[4] ) $regexp .= "[0-9A-Za-z_]+";
} else {
$regexp = preg_quote( str_replace( '"', '', $terms[2] ), '/' );
}
$this->searchTerms[] = $regexp;
}
wfDebug( "Would search with '$searchon'\n" );
wfDebug( "Match with /\b" . implode( '\b|\b', $this->searchTerms ) . "\b/\n" );
} else {
wfDebug( "Can't understand search query '{$filteredText}'\n" );
}
$searchon = $this->db->strencode( $searchon );
$field = $this->getIndexField( $fulltext );
return " MATCH($field) AGAINST('$searchon' IN BOOLEAN MODE) ";
}
}
?>
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