SpecialFewestrevisions.php

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<?php
class FewestrevisionsPage extends QueryPage {

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

        function isExpensive() {
                return true;
        }

        function isSyndicated() {
                return false;
        }

        function getQueryInfo() {
                return array (
                        'tables' => array ( 'revision', 'page' ),
                        'fields' => array ( 'namespace' => 'page_namespace',
                                        'title' => 'page_title',
                                        'value' => 'COUNT(*)',
                                        'redirect' => 'page_is_redirect' ),
                        'conds' => array ( 'page_namespace' => MWNamespace::getContentNamespaces(),
                                        'page_id = rev_page' ),
                        'options' => array ( 'HAVING' => 'COUNT(*) > 1',
                        // ^^^ This was probably here to weed out redirects.
                        // Since we mark them as such now, it might be
                        // useful to remove this. People _do_ create pages
                        // and never revise them, they aren't necessarily
                        // redirects.
                        'GROUP BY' => array( 'page_namespace', 'page_title', 'page_is_redirect' ) )
                );
        }

        function sortDescending() {
                return false;
        }

        function formatResult( $skin, $result ) {
                global $wgContLang;

                $nt = Title::makeTitleSafe( $result->namespace, $result->title );
                if( !$nt ) {
                        return Html::element( 'span', array( 'class' => 'mw-invalidtitle' ),
                                Linker::getInvalidTitleDescription( $this->getContext(), $result->namespace, $result->title ) );
                }

                $text = htmlspecialchars( $wgContLang->convert( $nt->getPrefixedText() ) );
                $plink = Linker::linkKnown( $nt, $text );

                $nl = $this->msg( 'nrevisions' )->numParams( $result->value )->escaped();
                $redirect = isset( $result->redirect ) && $result->redirect ?
                        ' - ' . $this->msg( 'isredirect' )->escaped() : '';
                $nlink = Linker::linkKnown(
                        $nt,
                        $nl,
                        array(),
                        array( 'action' => 'history' )
                ) . $redirect;

                return $this->getLanguage()->specialList( $plink, $nlink );
        }

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