SpecialWithoutinterwiki.php

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<?php
class WithoutInterwikiPage extends PageQueryPage {
        private $prefix = '';

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

        function execute( $par ) {
                $this->prefix = Title::capitalize(
                        $this->getRequest()->getVal( 'prefix', $par ), NS_MAIN );
                parent::execute( $par );
        }

        function getPageHeader() {
                global $wgScript, $wgMiserMode;

                # Do not show useless input form if wiki is running in misermode
                if( $wgMiserMode ) {
                        return '';
                }

                $prefix = $this->prefix;
                $t = $this->getTitle();

                return Xml::openElement( 'form', array( 'method' => 'get', 'action' => $wgScript ) ) .
                        Xml::openElement( 'fieldset' ) .
                        Xml::element( 'legend', null, wfMsg( 'withoutinterwiki-legend' ) ) .
                        Html::hidden( 'title', $t->getPrefixedText() ) .
                        Xml::inputLabel( wfMsg( 'allpagesprefix' ), 'prefix', 'wiprefix', 20, $prefix ) . ' ' .
                        Xml::submitButton( wfMsg( 'withoutinterwiki-submit' ) ) .
                        Xml::closeElement( 'fieldset' ) .
                        Xml::closeElement( 'form' );
        }

        function sortDescending() {
                return false;
        }

        function getOrderFields() {
                return array( 'page_namespace', 'page_title' );
        }

        function isExpensive() {
                return true;
        }

        function isSyndicated() {
                return false;
        }

        function getQueryInfo() {
                $query = array (
                        'tables' => array ( 'page', 'langlinks' ),
                        'fields' => array ( 'page_namespace AS namespace',
                                        'page_title AS title',
                                        'page_title AS value' ),
                        'conds' => array ( 'll_title IS NULL',
                                        'page_namespace' => MWNamespace::getContentNamespaces(),
                                        'page_is_redirect' => 0 ),
                        'join_conds' => array ( 'langlinks' => array (
                                        'LEFT JOIN', 'll_from = page_id' ) )
                );
                if ( $this->prefix ) {
                        $dbr = wfGetDB( DB_SLAVE );
                        $query['conds'][] = 'page_title ' . $dbr->buildLike( $this->prefix, $dbr->anyString() );
                }
                return $query;
        }
}