1 files changed, 113 insertions, 0 deletions
diff --git a/includes/search/SearchUpdate.php b/includes/search/SearchUpdate.php
new file mode 100644
index 00000000..e30c70e6
--- /dev/null
+++ b/includes/search/SearchUpdate.php
@@ -0,0 +1,113 @@
+<?php
+/**
+ * See deferred.txt
+ * @ingroup Search
+ */
+class SearchUpdate {
+
+	/* private */ var $mId = 0, $mNamespace, $mTitle, $mText;
+	/* private */ var $mTitleWords;
+
+	function SearchUpdate( $id, $title, $text = false ) {
+		$nt = Title::newFromText( $title );
+		if( $nt ) {
+			$this->mId = $id;
+			$this->mText = $text;
+
+			$this->mNamespace = $nt->getNamespace();
+			$this->mTitle = $nt->getText(); # Discard namespace
+
+			$this->mTitleWords = $this->mTextWords = array();
+		} else {
+			wfDebug( "SearchUpdate object created with invalid title '$title'\n" );
+		}
+	}
+
+	function doUpdate() {
+		global $wgContLang, $wgDisableSearchUpdate;
+
+		if( $wgDisableSearchUpdate || !$this->mId ) {
+			return false;
+		}
+		$fname = 'SearchUpdate::doUpdate';
+		wfProfileIn( $fname );
+
+		$search = SearchEngine::create();
+		$lc = SearchEngine::legalSearchChars() . '&#;';
+
+		if( $this->mText === false ) {
+			$search->updateTitle($this->mId,
+				Title::indexTitle( $this->mNamespace, $this->mTitle ));
+			wfProfileOut( $fname );
+			return;
+		}
+
+		# Language-specific strip/conversion
+		$text = $wgContLang->normalizeForSearch( $this->mText );
+
+		wfProfileIn( $fname.'-regexps' );
+		$text = preg_replace( "/<\\/?\\s*[A-Za-z][^>]*?>/",
+			' ', $wgContLang->lc( " " . $text . " " ) ); # Strip HTML markup
+		$text = preg_replace( "/(^|\\n)==\\s*([^\\n]+)\\s*==(\\s)/sD",
+		  "\\1\\2 \\2 \\2\\3", $text ); # Emphasize headings
+
+		# Strip external URLs
+		$uc = "A-Za-z0-9_\\/:.,~%\\-+&;#?!=()@\\xA0-\\xFF";
+		$protos = "http|https|ftp|mailto|news|gopher";
+		$pat = "/(^|[^\\[])({$protos}):[{$uc}]+([^{$uc}]|$)/";
+		$text = preg_replace( $pat, "\\1 \\3", $text );
+
+		$p1 = "/([^\\[])\\[({$protos}):[{$uc}]+]/";
+		$p2 = "/([^\\[])\\[({$protos}):[{$uc}]+\\s+([^\\]]+)]/";
+		$text = preg_replace( $p1, "\\1 ", $text );
+		$text = preg_replace( $p2, "\\1 \\3 ", $text );
+
+		# Internal image links
+		$pat2 = "/\\[\\[image:([{$uc}]+)\\.(gif|png|jpg|jpeg)([^{$uc}])/i";
+		$text = preg_replace( $pat2, " \\1 \\3", $text );
+
+		$text = preg_replace( "/([^{$lc}])([{$lc}]+)]]([a-z]+)/",
+		  "\\1\\2 \\2\\3", $text ); # Handle [[game]]s
+
+		# Strip all remaining non-search characters
+		$text = preg_replace( "/[^{$lc}]+/", " ", $text );
+
+		# Handle 's, s'
+		#
+		#   $text = preg_replace( "/([{$lc}]+)'s /", "\\1 \\1's ", $text );
+		#   $text = preg_replace( "/([{$lc}]+)s' /", "\\1s ", $text );
+		#
+		# These tail-anchored regexps are insanely slow. The worst case comes
+		# when Japanese or Chinese text (ie, no word spacing) is written on
+		# a wiki configured for Western UTF-8 mode. The Unicode characters are
+		# expanded to hex codes and the "words" are very long paragraph-length
+		# monstrosities. On a large page the above regexps may take over 20
+		# seconds *each* on a 1GHz-level processor.
+		#
+		# Following are reversed versions which are consistently fast
+		# (about 3 milliseconds on 1GHz-level processor).
+		#
+		$text = strrev( preg_replace( "/ s'([{$lc}]+)/", " s'\\1 \\1", strrev( $text ) ) );
+		$text = strrev( preg_replace( "/ 's([{$lc}]+)/", " s\\1", strrev( $text ) ) );
+
+		# Strip wiki '' and '''
+		$text = preg_replace( "/''[']*/", " ", $text );
+		wfProfileOut( "$fname-regexps" );
+
+		wfRunHooks( 'SearchUpdate', array( $this->mId, $this->mNamespace, $this->mTitle, &$text ) );
+
+		# Perform the actual update
+		$search->update($this->mId, Title::indexTitle( $this->mNamespace, $this->mTitle ),
+				$text);
+
+		wfProfileOut( $fname );
+	}
+}
+
+/**
+ * Placeholder class
+ * @ingroup Search
+ */
+class SearchUpdateMyISAM extends SearchUpdate {
+	# Inherits everything
+}