cleanupTitles.php

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<?php
require_once __DIR__ . '/cleanupTable.inc';

class TitleCleanup extends TableCleanup {
    public function __construct() {
        parent::__construct();
        $this->addDescription( 'Script to clean up broken, unparseable titles' );
    }

    protected function processRow( $row ) {
        global $wgContLang;
        $display = Title::makeName( $row->page_namespace, $row->page_title );
        $verified = $wgContLang->normalize( $display );
        $title = Title::newFromText( $verified );

        if ( !is_null( $title )
            && $title->canExist()
            && $title->getNamespace() == $row->page_namespace
            && $title->getDBkey() === $row->page_title
        ) {
            $this->progress( 0 ); // all is fine

            return;
        }

        if ( $row->page_namespace == NS_FILE && $this->fileExists( $row->page_title ) ) {
            $this->output( "file $row->page_title needs cleanup, please run cleanupImages.php.\n" );
            $this->progress( 0 );
        } elseif ( is_null( $title ) ) {
            $this->output( "page $row->page_id ($display) is illegal.\n" );
            $this->moveIllegalPage( $row );
            $this->progress( 1 );
        } else {
            $this->output( "page $row->page_id ($display) doesn't match self.\n" );
            $this->moveInconsistentPage( $row, $title );
            $this->progress( 1 );
        }
    }

    protected function fileExists( $name ) {
        // XXX: Doesn't actually check for file existence, just presence of image record.
        // This is reasonable, since cleanupImages.php only iterates over the image table.
        $dbr = $this->getDB( DB_REPLICA );
        $row = $dbr->selectRow( 'image', [ 'img_name' ], [ 'img_name' => $name ], __METHOD__ );

        return $row !== false;
    }

    protected function moveIllegalPage( $row ) {
        $legal = 'A-Za-z0-9_/\\\\-';
        $legalized = preg_replace_callback( "!([^$legal])!",
            [ $this, 'hexChar' ],
            $row->page_title );
        if ( $legalized == '.' ) {
            $legalized = '(dot)';
        }
        if ( $legalized == '_' ) {
            $legalized = '(space)';
        }
        $legalized = 'Broken/' . $legalized;

        $title = Title::newFromText( $legalized );
        if ( is_null( $title ) ) {
            $clean = 'Broken/id:' . $row->page_id;
            $this->output( "Couldn't legalize; form '$legalized' still invalid; using '$clean'\n" );
            $title = Title::newFromText( $clean );
        } elseif ( $title->exists() ) {
            $clean = 'Broken/id:' . $row->page_id;
            $this->output( "Legalized for '$legalized' exists; using '$clean'\n" );
            $title = Title::newFromText( $clean );
        }

        $dest = $title->getDBkey();
        if ( $this->dryrun ) {
            $this->output( "DRY RUN: would rename $row->page_id ($row->page_namespace," .
                "'$row->page_title') to ($row->page_namespace,'$dest')\n" );
        } else {
            $this->output( "renaming $row->page_id ($row->page_namespace," .
                "'$row->page_title') to ($row->page_namespace,'$dest')\n" );
            $dbw = $this->getDB( DB_MASTER );
            $dbw->update( 'page',
                [ 'page_title' => $dest ],
                [ 'page_id' => $row->page_id ],
                __METHOD__ );
        }
    }

    protected function moveInconsistentPage( $row, $title ) {
        if ( $title->exists() || $title->getInterwiki() || !$title->canExist() ) {
            if ( $title->getInterwiki() || !$title->canExist() ) {
                $prior = $title->getPrefixedDBkey();
            } else {
                $prior = $title->getDBkey();
            }

            # Old cleanupTitles could move articles there. See bug 23147.
            $ns = $row->page_namespace;
            if ( $ns < 0 ) {
                $ns = 0;
            }

            # Namespace which no longer exists. Put the page in the main namespace
            # since we don't have any idea of the old namespace name. See bug 68501.
            if ( !MWNamespace::exists( $ns ) ) {
                $ns = 0;
            }

            $clean = 'Broken/' . $prior;
            $verified = Title::makeTitleSafe( $ns, $clean );
            if ( !$verified || $verified->exists() ) {
                $blah = "Broken/id:" . $row->page_id;
                $this->output( "Couldn't legalize; form '$clean' exists; using '$blah'\n" );
                $verified = Title::makeTitleSafe( $ns, $blah );
            }
            $title = $verified;
        }
        if ( is_null( $title ) ) {
            $this->error( "Something awry; empty title.", true );
        }
        $ns = $title->getNamespace();
        $dest = $title->getDBkey();

        if ( $this->dryrun ) {
            $this->output( "DRY RUN: would rename $row->page_id ($row->page_namespace," .
                "'$row->page_title') to ($ns,'$dest')\n" );
        } else {
            $this->output( "renaming $row->page_id ($row->page_namespace," .
                "'$row->page_title') to ($ns,'$dest')\n" );
            $dbw = $this->getDB( DB_MASTER );
            $dbw->update( 'page',
                [
                    'page_namespace' => $ns,
                    'page_title' => $dest
                ],
                [ 'page_id' => $row->page_id ],
                __METHOD__ );
            LinkCache::singleton()->clear();
        }
    }
}

$maintClass = "TitleCleanup";
require_once RUN_MAINTENANCE_IF_MAIN;