X-Git-Url: https://scripts.mit.edu/gitweb/autoinstalls/mediawiki.git/blobdiff_plain/d7967d5e4460e08b6b258307afbca0596b18a3dd..74c929b24b048c9f1e31e17db757ae4195cd7673:/includes/SearchMySQL.php

diff --git a/includes/SearchMySQL.php b/includes/SearchMySQL.php
index 905075ef..5fc06790 100644
--- a/includes/SearchMySQL.php
+++ b/includes/SearchMySQL.php
@@ -18,11 +18,71 @@
 # http://www.gnu.org/copyleft/gpl.html
 
 /**
- * Search engine hook base class for MySQL.
- * Specific bits for MySQL 3 and 4 variants are in child classes.
- * @addtogroup Search
+ * @file
+ * @ingroup Search
+ */
+
+/**
+ * Search engine hook for MySQL 4+
+ * @ingroup Search
  */
 class SearchMySQL extends SearchEngine {
+	var $strictMatching = true;
+
+	/** @todo document */
+	function __construct( $db ) {
+		$this->db = $db;
+	}
+
+	/** 
+	 * Parse the user's query and transform it into an SQL fragment which will 
+	 * become part of a WHERE clause
+	 */
+	function parseQuery( $filteredText, $fulltext ) {
+		global $wgContLang;
+		$lc = SearchEngine::legalSearchChars(); // Minus format chars
+		$searchon = '';
+		$this->searchTerms = array();
+
+		# FIXME: This doesn't handle parenthetical expressions.
+		$m = array();
+		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] ) ) {
+					// Match individual terms in result highlighting...
+					$regexp = preg_quote( $terms[3], '/' );
+					if( $terms[4] ) {
+						$regexp = "\b$regexp"; // foo*
+					} else {
+						$regexp = "\b$regexp\b";
+					}
+				} else {
+					// Match the quoted term in result highlighting...
+					$regexp = preg_quote( str_replace( '"', '', $terms[2] ), '/' );
+				}
+				$this->searchTerms[] = $regexp;
+			}
+			wfDebug( "Would search with '$searchon'\n" );
+			wfDebug( 'Match with /' . implode( '|', $this->searchTerms ) . "/\n" );
+		} else {
+			wfDebug( "Can't understand search query '{$filteredText}'\n" );
+		}
+
+		$searchon = $this->db->strencode( $searchon );
+		$field = $this->getIndexField( $fulltext );
+		return " MATCH($field) AGAINST('$searchon' IN BOOLEAN MODE) ";
+	}
+
+	public static function legalSearchChars() {
+		return "\"*" . parent::legalSearchChars();
+	}
+
 	/**
 	 * Perform a full text search query and return a result set.
 	 *
@@ -67,9 +127,12 @@ class SearchMySQL extends SearchEngine {
 	 * @private
 	 */
 	function queryNamespaces() {
-		$namespaces = implode( ',', $this->namespaces );
-		if ($namespaces == '') {
+		if( is_null($this->namespaces) )
+			return '';  # search all
+		if ( !count( $this->namespaces ) ) {
 			$namespaces = '0';
+		} else {
+			$namespaces = $this->db->makeList( $this->namespaces );
 		}
 		return 'AND page_namespace IN (' . $namespaces . ')';
 	}
@@ -154,7 +217,7 @@ class SearchMySQL extends SearchEngine {
 				'si_page' => $id,
 				'si_title' => $title,
 				'si_text' => $text
-			), 'SearchMySQL4::update' );
+			), __METHOD__ );
 	}
 
 	/**
@@ -170,13 +233,13 @@ class SearchMySQL extends SearchEngine {
 		$dbw->update( 'searchindex',
 			array( 'si_title' => $title ),
 			array( 'si_page'  => $id ),
-			'SearchMySQL4::updateTitle',
+			__METHOD__,
 			array( $dbw->lowPriorityOption() ) );
 	}
 }
 
 /**
- * @addtogroup Search
+ * @ingroup Search
  */
 class MySQLSearchResultSet extends SearchResultSet {
 	function MySQLSearchResultSet( $resultSet, $terms ) {
@@ -200,10 +263,8 @@ class MySQLSearchResultSet extends SearchResultSet {
 			return new SearchResult( $row );
 		}
 	}
-	
+
 	function free() {
 		$this->mResultSet->free();
 	}
 }
-
-