cleanupCaps.php

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

class CapsCleanup extends TableCleanup {

    private $user;

    public function __construct() {
        parent::__construct();
        $this->addDescription( 'Script to cleanup capitalization' );
        $this->addOption( 'namespace', 'Namespace number to run caps cleanup on', false, true );
    }

    public function execute() {
        global $wgCapitalLinks;

        if ( $wgCapitalLinks ) {
            $this->error( "\$wgCapitalLinks is on -- no need for caps links cleanup.", true );
        }

        $this->user = User::newSystemUser( 'Conversion script', [ 'steal' => true ] );

        $this->namespace = intval( $this->getOption( 'namespace', 0 ) );
        $this->dryrun = $this->hasOption( 'dry-run' );

        $this->runTable( [
            'table' => 'page',
            'conds' => [ 'page_namespace' => $this->namespace ],
            'index' => 'page_id',
            'callback' => 'processRow' ] );
    }

    protected function processRow( $row ) {
        global $wgContLang;

        $current = Title::makeTitle( $row->page_namespace, $row->page_title );
        $display = $current->getPrefixedText();
        $upper = $row->page_title;
        $lower = $wgContLang->lcfirst( $row->page_title );
        if ( $upper == $lower ) {
            $this->output( "\"$display\" already lowercase.\n" );

            return $this->progress( 0 );
        }

        $target = Title::makeTitle( $row->page_namespace, $lower );
        $targetDisplay = $target->getPrefixedText();
        if ( $target->exists() ) {
            $this->output( "\"$display\" skipped; \"$targetDisplay\" already exists\n" );

            return $this->progress( 0 );
        }

        if ( $this->dryrun ) {
            $this->output( "\"$display\" -> \"$targetDisplay\": DRY RUN, NOT MOVED\n" );
            $ok = true;
        } else {
            $mp = new MovePage( $current, $target );
            $status = $mp->move( $this->user, 'Converting page titles to lowercase', true );
            $ok = $status->isOK() ? 'OK' : $status->getWikiText( false, false, 'en' );
            $this->output( "\"$display\" -> \"$targetDisplay\": $ok\n" );
        }
        if ( $ok === true ) {
            $this->progress( 1 );
            if ( $row->page_namespace == $this->namespace ) {
                $talk = $target->getTalkPage();
                $row->page_namespace = $talk->getNamespace();
                if ( $talk->exists() ) {
                    return $this->processRow( $row );
                }
            }
        }

        return $this->progress( 0 );
    }
}

$maintClass = "CapsCleanup";
require_once RUN_MAINTENANCE_IF_MAIN;