4c8a8609e3c0ed6f141695f81205e2502483497d
7 /* private */ var $mId = 0, $mNamespace, $mTitle, $mText;
8 /* private */ var $mTitleWords;
10 function SearchUpdate( $id, $title, $text = false )
12 $nt = Title
::newFromText( $title );
17 $this->mNamespace
= $nt->getNamespace();
18 $this->mTitle
= $nt->getText(); # Discard namespace
20 $this->mTitleWords
= $this->mTextWords
= array();
22 wfDebug( "SearchUpdate object created with invalid title '$title'\n" );
28 global $wgDBminWordLen, $wgLang, $wgDisableSearchUpdate;
30 if( $wgDisableSearchUpdate ||
!$this->mId
) {
33 $fname = "SearchUpdate::doUpdate";
34 wfProfileIn( $fname );
36 require_once( 'SearchEngine.php' );
37 $lc = SearchEngine
::legalSearchChars() . "&#;";
38 $db =& wfGetDB( DB_MASTER
);
39 $searchindex = $db->tableName( 'searchindex' );
41 if( $this->mText
== false ) {
42 # Just update the title
43 $lowpri = $db->lowPriorityOption();
44 $sql = "UPDATE $lowpri $searchindex SET si_title='" .
45 $db->strencode( Title
::indexTitle( $this->mNamespace
, $this->mTitle
) ) .
46 "' WHERE si_page={$this->mId}";
47 $db->query( $sql, "SearchUpdate::doUpdate" );
48 wfProfileOut( $fname );
52 # Language-specific strip/conversion
53 $text = $wgLang->stripForSearch( $this->mText
);
55 wfProfileIn( "$fname-regexps" );
56 $text = preg_replace( "/<\\/?\\s*[A-Za-z][A-Za-z0-9]*\\s*([^>]*?)>/",
57 " ", strtolower( " " . $text /*$this->mText*/ . " " ) ); # Strip HTML markup
58 $text = preg_replace( "/(^|\\n)\\s*==\\s+([^\\n]+)\\s+==\\s/sD",
59 "\\2 \\2 \\2 ", $text ); # Emphasize headings
62 $uc = "A-Za-z0-9_\\/:.,~%\\-+&;#?!=()@\\xA0-\\xFF";
63 $protos = "http|https|ftp|mailto|news|gopher";
64 $pat = "/(^|[^\\[])({$protos}):[{$uc}]+([^{$uc}]|$)/";
65 $text = preg_replace( $pat, "\\1 \\3", $text );
67 $p1 = "/([^\\[])\\[({$protos}):[{$uc}]+]/";
68 $p2 = "/([^\\[])\\[({$protos}):[{$uc}]+\\s+([^\\]]+)]/";
69 $text = preg_replace( $p1, "\\1 ", $text );
70 $text = preg_replace( $p2, "\\1 \\3 ", $text );
72 # Internal image links
73 $pat2 = "/\\[\\[image:([{$uc}]+)\\.(gif|png|jpg|jpeg)([^{$uc}])/i";
74 $text = preg_replace( $pat2, " \\1 \\3", $text );
76 $text = preg_replace( "/([^{$lc}])([{$lc}]+)]]([a-z]+)/",
77 "\\1\\2 \\2\\3", $text ); # Handle [[game]]s
79 # Strip all remaining non-search characters
80 $text = preg_replace( "/[^{$lc}]+/", " ", $text );
84 # $text = preg_replace( "/([{$lc}]+)'s /", "\\1 \\1's ", $text );
85 # $text = preg_replace( "/([{$lc}]+)s' /", "\\1s ", $text );
87 # These tail-anchored regexps are insanely slow. The worst case comes
88 # when Japanese or Chinese text (ie, no word spacing) is written on
89 # a wiki configured for Western UTF-8 mode. The Unicode characters are
90 # expanded to hex codes and the "words" are very long paragraph-length
91 # monstrosities. On a large page the above regexps may take over 20
92 # seconds *each* on a 1GHz-level processor.
94 # Following are reversed versions which are consistently fast
95 # (about 3 milliseconds on 1GHz-level processor).
97 $text = strrev( preg_replace( "/ s'([{$lc}]+)/", " s'\\1 \\1", strrev( $text ) ) );
98 $text = strrev( preg_replace( "/ 's([{$lc}]+)/", " s\\1", strrev( $text ) ) );
100 # Strip wiki '' and '''
101 $text = preg_replace( "/''[']*/", " ", $text );
102 wfProfileOut( "$fname-regexps" );
104 $sql = "REPLACE INTO $searchindex (si_page,si_title,si_text) VALUES ({$this->mId},'" .
105 $db->strencode( Title
::indexTitle( $this->mNamespace
, $this->mTitle
) ) . "','" .
106 $db->strencode( $text ) . "')";
107 $db->query( $sql, "SearchUpdate::doUpdate" );
108 wfProfileOut( $fname );