SpecialWantedfiles.php

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<?php
class WantedFilesPage extends WantedQueryPage {

    function __construct( $name = 'Wantedfiles' ) {
        parent::__construct( $name );
    }

    function getPageHeader() {
        # Specifically setting to use "Wanted Files" (NS_MAIN) as title, so as to get what
        # category would be used on main namespace pages, for those tricky wikipedia
        # admins who like to do {{#ifeq:{{NAMESPACE}}|foo|bar|....}}.
        $catMessage = $this->msg( 'broken-file-category' )
            ->title( Title::newFromText( "Wanted Files", NS_MAIN ) )
            ->inContentLanguage();

        if ( !$catMessage->isDisabled() ) {
            $category = Title::makeTitleSafe( NS_CATEGORY, $catMessage->text() );
        } else {
            $category = false;
        }

        if ( $category ) {
            return $this
                ->msg( 'wantedfiletext-cat' )
                ->params( $category->getFullText() )
                ->parseAsBlock();
        } else {
            return $this
                ->msg( 'wantedfiletext-nocat' )
                ->parseAsBlock();
        }
    }

    function forceExistenceCheck() {
        return true;
    }

    function getQueryInfo() {
        return array(
            'tables' => array( 'imagelinks', 'image' ),
            'fields' => array( 'namespace' => NS_FILE,
                    'title' => 'il_to',
                    'value' => 'COUNT(*)' ),
            'conds' => array( 'img_name IS NULL' ),
            'options' => array( 'GROUP BY' => 'il_to' ),
            'join_conds' => array( 'image' =>
                array( 'LEFT JOIN',
                    array( 'il_to = img_name' )
                )
            )
        );
    }

    protected function getGroupName() {
        return 'maintenance';
    }
}