cleanupCaps.php

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

class CapsCleanup extends TableCleanup {
        public function __construct() {
                parent::__construct();
                $this->mDescription = "Script to cleanup capitalization";
                $this->addOption( 'namespace', 'Namespace number to run caps cleanup on', false, true );
        }

        public function execute() {
                global $wgCapitalLinks, $wgUser;

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

                $wgUser = User::newFromName( 'Conversion script' );

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

                $this->runTable( array(
                        'table' => 'page',
                        'conds' => array( '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 {
                        $ok = $current->moveTo( $target, false, 'Converting page titles to lowercase' );
                        $this->output( "\"$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 );