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<?php
# See deferred.doc
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 $wgDBminWordLen, $wgLang, $wgDisableSearchUpdate;
if( $wgDisableSearchUpdate || !$this->mId ) {
return false;
}
$lc = SearchEngine::legalSearchChars() . "&#;";
if( $this->mText == false ) {
# Just update the title
$sql = "UPDATE LOW_PRIORITY searchindex SET si_title='" .
wfStrencode( Title::indexTitle( $this->mNamespace, $this->mTitle ) ) .
"' WHERE si_page={$this->mId}";
wfQuery( $sql, DB_WRITE, "SearchUpdate::doUpdate" );
return;
}
# Language-specific strip/conversion
$text = $wgLang->stripForSearch( $this->mText );
$text = preg_replace( "/<\\/?\\s*[A-Za-z][A-Za-z0-9]*\\s*([^>]*?)>/",
" ", strtolower( " " . $text /*$this->mText*/ . " " ) ); # Strip HTML markup
$text = preg_replace( "/(^|\\n)\\s*==\\s+([^\\n]+)\\s+==\\s/sD",
"\\2 \\2 \\2 ", $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 );
# Strip wiki '' and '''
$text = preg_replace( "/''[']*/", " ", $text );
$sql = "REPLACE DELAYED INTO searchindex (si_page,si_title,si_text) VALUES ({$this->mId},'" .
wfStrencode( Title::indexTitle( $this->mNamespace, $this->mTitle ) ) . "','" .
wfStrencode( $text ) . "')";
wfQuery( $sql, DB_WRITE, "SearchUpdate::doUpdate" );
}
}
?>
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