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<?php
/**
* Fix double redirects.
*
* Copyright © 2011 Ilmari Karonen <nospam@vyznev.net>
* http://www.mediawiki.org/
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
* @author Ilmari Karonen <nospam@vyznev.net>
* @ingroup Maintenance
*/
require_once __DIR__ . '/Maintenance.php';
/**
* Maintenance script that fixes double redirects.
*
* @ingroup Maintenance
*/
class FixDoubleRedirects extends Maintenance {
public function __construct() {
parent::__construct();
$this->mDescription = "Script to fix double redirects";
$this->addOption( 'async', 'Don\'t fix anything directly, just queue the jobs' );
$this->addOption( 'title', 'Fix only redirects pointing to this page', false, true );
$this->addOption( 'dry-run', 'Perform a dry run, fix nothing' );
}
public function execute() {
$async = $this->getOption( 'async', false );
$dryrun = $this->getOption( 'dry-run', false );
$title = $this->getOption( 'title' );
if ( isset( $title ) ) {
$title = Title::newFromText( $title );
if ( !$title || !$title->isRedirect() ) {
$this->error( $title->getPrefixedText() . " is not a redirect!\n", true );
}
}
$dbr = wfGetDB( DB_SLAVE );
// See also SpecialDoubleRedirects
$tables = array(
'redirect',
'pa' => 'page',
'pb' => 'page',
);
$fields = array(
'pa.page_namespace AS pa_namespace',
'pa.page_title AS pa_title',
'pb.page_namespace AS pb_namespace',
'pb.page_title AS pb_title',
);
$conds = array(
'rd_from = pa.page_id',
'rd_namespace = pb.page_namespace',
'rd_title = pb.page_title',
'(rd_interwiki IS NULL OR rd_interwiki = "")', // bug 40352
'pb.page_is_redirect' => 1,
);
if ( isset( $title ) ) {
$conds['pb.page_namespace'] = $title->getNamespace();
$conds['pb.page_title'] = $title->getDBkey();
}
// TODO: support batch querying
$res = $dbr->select( $tables, $fields, $conds, __METHOD__ );
if ( !$res->numRows() ) {
$this->output( "No double redirects found.\n" );
return;
}
$jobs = array();
$processedTitles = "\n";
$n = 0;
foreach ( $res as $row ) {
$titleA = Title::makeTitle( $row->pa_namespace, $row->pa_title );
$titleB = Title::makeTitle( $row->pb_namespace, $row->pb_title );
$processedTitles .= "* [[$titleA]]\n";
$job = new DoubleRedirectJob( $titleA, array(
'reason' => 'maintenance',
'redirTitle' => $titleB->getPrefixedDBkey()
) );
if ( !$async ) {
$success = ( $dryrun ? true : $job->run() );
if ( !$success ) {
$this->error( "Error fixing " . $titleA->getPrefixedText() . ": " . $job->getLastError() . "\n" );
}
} else {
$jobs[] = $job;
// @todo FIXME: Hardcoded constant 10000 copied from DoubleRedirectJob class
if ( count( $jobs ) > 10000 ) {
$this->queueJobs( $jobs, $dryrun );
$jobs = array();
}
}
if ( ++$n % 100 == 0 ) {
$this->output( "$n...\n" );
}
}
if ( count( $jobs ) ) {
$this->queueJobs( $jobs, $dryrun );
}
$this->output( "$n double redirects processed" . $processedTitles . "\n" );
}
protected function queueJobs( $jobs, $dryrun = false ) {
$this->output( "Queuing batch of " . count( $jobs ) . " double redirects.\n" );
JobQueueGroup::singleton()->push( $dryrun ? array() : $jobs );
}
}
$maintClass = "FixDoubleRedirects";
require_once RUN_MAINTENANCE_IF_MAIN;
|
