264 lines
7.4 KiB
PHP
264 lines
7.4 KiB
PHP
<?php
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/**
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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* http://www.gnu.org/copyleft/gpl.html
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*
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* @file
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*/
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namespace MediaWiki\Specials;
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use MediaWiki\Cache\LinkBatchFactory;
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use MediaWiki\Content\IContentHandlerFactory;
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use MediaWiki\Html\Html;
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use MediaWiki\SpecialPage\QueryPage;
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use MediaWiki\Title\Title;
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use Skin;
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use stdClass;
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use Wikimedia\Rdbms\IConnectionProvider;
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use Wikimedia\Rdbms\IDatabase;
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use Wikimedia\Rdbms\IResultWrapper;
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/**
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* List of redirects to another redirecting page.
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*
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* The software will by default not follow double redirects, to prevent loops.
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* Editors are encouraged to fix these, and can discover them via this page.
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*
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* @ingroup SpecialPage
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*/
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class SpecialDoubleRedirects extends QueryPage {
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private IContentHandlerFactory $contentHandlerFactory;
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private LinkBatchFactory $linkBatchFactory;
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/**
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* @param IContentHandlerFactory $contentHandlerFactory
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* @param LinkBatchFactory $linkBatchFactory
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* @param IConnectionProvider $dbProvider
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*/
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public function __construct(
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IContentHandlerFactory $contentHandlerFactory,
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LinkBatchFactory $linkBatchFactory,
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IConnectionProvider $dbProvider
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) {
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parent::__construct( 'DoubleRedirects' );
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$this->contentHandlerFactory = $contentHandlerFactory;
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$this->linkBatchFactory = $linkBatchFactory;
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$this->setDatabaseProvider( $dbProvider );
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}
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public function isExpensive() {
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return true;
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}
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public function isSyndicated() {
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return false;
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}
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protected function sortDescending() {
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return false;
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}
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protected function getPageHeader() {
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return $this->msg( 'doubleredirectstext' )->parseAsBlock();
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}
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private function reallyGetQueryInfo( $namespace = null, $title = null ) {
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$limitToTitle = !( $namespace === null && $title === null );
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$retval = [
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'tables' => [
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'ra' => 'redirect',
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'rb' => 'redirect',
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'pa' => 'page',
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'pb' => 'page'
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],
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'fields' => [
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'namespace' => 'pa.page_namespace',
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'title' => 'pa.page_title',
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'b_namespace' => 'pb.page_namespace',
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'b_title' => 'pb.page_title',
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'b_fragment' => 'ra.rd_fragment',
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// Select fields from redirect instead of page. Because there may
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// not actually be a page table row for this target (e.g. for interwiki redirects)
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'c_namespace' => 'rb.rd_namespace',
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'c_title' => 'rb.rd_title',
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'c_fragment' => 'rb.rd_fragment',
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'c_interwiki' => 'rb.rd_interwiki',
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],
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'conds' => [
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'ra.rd_from = pa.page_id',
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// Filter out redirects where the target goes interwiki (T42353).
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// This isn't an optimization, it is required for correct results,
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// otherwise a non-double redirect like Bar -> w:Foo will show up
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// like "Bar -> Foo -> w:Foo".
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'ra.rd_interwiki' => '',
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'pb.page_namespace = ra.rd_namespace',
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'pb.page_title = ra.rd_title',
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'rb.rd_from = pb.page_id',
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]
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];
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if ( $limitToTitle ) {
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$retval['conds']['pa.page_namespace'] = $namespace;
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$retval['conds']['pa.page_title'] = $title;
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}
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return $retval;
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}
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public function getQueryInfo() {
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return $this->reallyGetQueryInfo();
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}
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protected function getOrderFields() {
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return [ 'ra.rd_namespace', 'ra.rd_title' ];
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}
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/**
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* @param Skin $skin
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* @param stdClass $result Result row
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* @return string
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*/
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public function formatResult( $skin, $result ) {
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// If no Title B or C is in the query, it means this came from
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// querycache (which only saves the 3 columns for title A).
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// That does save the bulk of the query cost, but now we need to
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// get a little more detail about each individual entry quickly
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// using the filter of reallyGetQueryInfo.
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$deep = false;
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if ( $result ) {
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if ( isset( $result->b_namespace ) ) {
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$deep = $result;
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} else {
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$qi = $this->reallyGetQueryInfo(
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$result->namespace,
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$result->title
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);
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$deep = $this->getDatabaseProvider()->getReplicaDatabase()->newSelectQueryBuilder()
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->queryInfo( $qi )
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->caller( __METHOD__ )
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->fetchRow();
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}
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}
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$titleA = Title::makeTitle( $result->namespace, $result->title );
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$linkRenderer = $this->getLinkRenderer();
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if ( !$deep ) {
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return '<del>' . $linkRenderer->makeLink( $titleA, null, [], [ 'redirect' => 'no' ] ) . '</del>';
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}
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// if the page is editable, add an edit link
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if (
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// check user permissions
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$this->getAuthority()->isAllowed( 'edit' ) &&
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// check, if the content model is editable through action=edit
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$this->contentHandlerFactory->getContentHandler( $titleA->getContentModel() )
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->supportsDirectEditing()
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) {
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$edit = $linkRenderer->makeKnownLink(
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$titleA,
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$this->msg( 'parentheses', $this->msg( 'editlink' )->text() )->text(),
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[],
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[ 'action' => 'edit' ]
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);
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} else {
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$edit = '';
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}
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$arrow = $this->getLanguage()->getArrow();
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$contentLanguage = $this->getContentLanguage();
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$bdiAttrs = [
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'dir' => $contentLanguage->getDir(),
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'lang' => $contentLanguage->getHtmlCode(),
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];
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$linkA = Html::rawElement( 'bdi', $bdiAttrs, $linkRenderer->makeKnownLink(
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$titleA,
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null,
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[],
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[ 'redirect' => 'no' ]
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) );
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$titleB = Title::makeTitle( $deep->b_namespace, $deep->b_title );
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// We show fragment, but don't link to it, as it probably doesn't exist anymore.
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$titleBFrag = Title::makeTitle( $deep->b_namespace, $deep->b_title, $deep->b_fragment );
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$linkB = Html::rawElement( 'bdi', $bdiAttrs, $linkRenderer->makeKnownLink(
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$titleB,
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$titleBFrag->getFullText(),
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[],
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[ 'redirect' => 'no' ]
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) );
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$titleC = Title::makeTitle(
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$deep->c_namespace,
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$deep->c_title,
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$deep->c_fragment,
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$deep->c_interwiki
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);
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$linkC = Html::rawElement( 'bdi', $bdiAttrs,
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$linkRenderer->makeKnownLink( $titleC, $titleC->getFullText() )
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);
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return ( "{$linkA} {$edit} {$arrow} {$linkB} {$arrow} {$linkC}" );
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}
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public function execute( $par ) {
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$this->addHelpLink( 'Help:Redirects' );
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parent::execute( $par );
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}
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/**
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* Cache page content model and gender distinction for performance
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*
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* @param IDatabase $db
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* @param IResultWrapper $res
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*/
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public function preprocessResults( $db, $res ) {
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if ( !$res->numRows() ) {
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return;
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}
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$batch = $this->linkBatchFactory->newLinkBatch();
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foreach ( $res as $row ) {
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$batch->add( $row->namespace, $row->title );
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if ( isset( $row->b_namespace ) ) {
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// lazy loaded when using cached results
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$batch->add( $row->b_namespace, $row->b_title );
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}
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if ( isset( $row->c_interwiki ) && !$row->c_interwiki ) {
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// lazy loaded when using cached result, not added when interwiki link
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$batch->add( $row->c_namespace, $row->c_title );
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}
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}
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$batch->execute();
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// Back to start for display
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$res->seek( 0 );
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}
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protected function getGroupName() {
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return 'maintenance';
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}
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}
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/** @deprecated class alias since 1.41 */
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class_alias( SpecialDoubleRedirects::class, 'SpecialDoubleRedirects' );
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