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<?php
/**
* @todo document
* @file
* @ingroup Maintenance
*/
function refreshLinks( $start, $newOnly = false, $maxLag = false, $end = 0, $redirectsOnly = false, $oldRedirectsOnly = false ) {
global $wgUser, $wgParser, $wgUseTidy;
$reportingInterval = 100;
$fname = 'refreshLinks';
$dbr = wfGetDB( DB_SLAVE );
$start = intval( $start );
# Don't generate TeX PNGs (lack of a sensible current directory causes errors anyway)
$wgUser->setOption('math', MW_MATH_SOURCE);
# Don't generate extension images (e.g. Timeline)
$wgParser->clearTagHooks();
# Don't use HTML tidy
$wgUseTidy = false;
$what = $redirectsOnly ? "redirects" : "links";
if( $oldRedirectsOnly ) {
# This entire code path is cut-and-pasted from below. Hurrah.
$res = $dbr->query(
"SELECT page_id ".
"FROM page ".
"LEFT JOIN redirect ON page_id=rd_from ".
"WHERE page_is_redirect=1 AND rd_from IS NULL AND ".
($end == 0 ? "page_id >= $start"
: "page_id BETWEEN $start AND $end"),
$fname
);
$num = $dbr->numRows( $res );
print "Refreshing $num old redirects from $start...\n";
while( $row = $dbr->fetchObject( $res ) ) {
if ( !( ++$i % $reportingInterval ) ) {
print "$i\n";
wfWaitForSlaves( $maxLag );
}
fixRedirect( $row->page_id );
}
} elseif( $newOnly ) {
print "Refreshing $what from ";
$res = $dbr->select( 'page',
array( 'page_id' ),
array(
'page_is_new' => 1,
"page_id >= $start" ),
$fname
);
$num = $dbr->numRows( $res );
print "$num new articles...\n";
$i = 0;
while ( $row = $dbr->fetchObject( $res ) ) {
if ( !( ++$i % $reportingInterval ) ) {
print "$i\n";
wfWaitForSlaves( $maxLag );
}
if($redirectsOnly)
fixRedirect( $row->page_id );
else
fixLinksFromArticle( $row->page_id );
}
} else {
print "Refreshing $what table.\n";
if ( !$end ) {
$end = $dbr->selectField( 'page', 'max(page_id)', false );
}
print("Starting from page_id $start of $end.\n");
for ($id = $start; $id <= $end; $id++) {
if ( !($id % $reportingInterval) ) {
print "$id\n";
wfWaitForSlaves( $maxLag );
}
if($redirectsOnly)
fixRedirect( $id );
else
fixLinksFromArticle( $id );
}
}
}
function fixRedirect( $id ){
global $wgTitle, $wgArticle;
$wgTitle = Title::newFromID( $id );
$dbw = wfGetDB( DB_MASTER );
if ( is_null( $wgTitle ) ) {
return;
}
$wgArticle = new Article($wgTitle);
$rt = $wgArticle->followRedirect();
if($rt == false || !is_object($rt))
return;
$wgArticle->updateRedirectOn($dbw,$rt);
}
function fixLinksFromArticle( $id ) {
global $wgTitle, $wgParser;
$wgTitle = Title::newFromID( $id );
$dbw = wfGetDB( DB_MASTER );
$linkCache =& LinkCache::singleton();
$linkCache->clear();
if ( is_null( $wgTitle ) ) {
return;
}
$dbw->begin();
$revision = Revision::newFromTitle( $wgTitle );
if ( !$revision ) {
return;
}
$options = new ParserOptions;
$parserOutput = $wgParser->parse( $revision->getText(), $wgTitle, $options, true, true, $revision->getId() );
$update = new LinksUpdate( $wgTitle, $parserOutput, false );
$update->doUpdate();
$dbw->immediateCommit();
}
function deleteLinksFromNonexistent( $maxLag = 0 ) {
$fname = 'deleteLinksFromNonexistent';
wfWaitForSlaves( $maxLag );
$dbw = wfGetDB( DB_MASTER );
$linksTables = array(
'pagelinks' => 'pl_from',
'imagelinks' => 'il_from',
'categorylinks' => 'cl_from',
'templatelinks' => 'tl_from',
'externallinks' => 'el_from',
);
$page = $dbw->tableName( 'page' );
foreach ( $linksTables as $table => $field ) {
if ( !$dbw->ping() ) {
print "DB disconnected, reconnecting...";
while ( !$dbw->ping() ) {
print ".";
sleep(10);
}
print "\n";
}
$pTable = $dbw->tableName( $table );
$sql = "DELETE $pTable FROM $pTable LEFT JOIN $page ON page_id=$field WHERE page_id IS NULL";
print "Deleting $table from non-existent articles...";
$dbw->query( $sql, $fname );
print " fixed " .$dbw->affectedRows() . " row(s)\n";
}
}
?>
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