683 lines
20 KiB
PHP
683 lines
20 KiB
PHP
<?php
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/**
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* Check for articles to fix after adding/deleting namespaces
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*
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* Copyright © 2005-2007 Brion Vibber <brion@pobox.com>
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* https://www.mediawiki.org/
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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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* @ingroup Maintenance
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*/
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require_once __DIR__ . '/Maintenance.php';
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use MediaWiki\Linker\LinkTarget;
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use MediaWiki\MediaWikiServices;
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use Wikimedia\Rdbms\IDatabase;
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use Wikimedia\Rdbms\IMaintainableDatabase;
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use Wikimedia\Rdbms\IResultWrapper;
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/**
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* Maintenance script that checks for articles to fix after
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* adding/deleting namespaces.
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*
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* @ingroup Maintenance
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*/
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class NamespaceDupes extends Maintenance {
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/**
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* @var IMaintainableDatabase
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*/
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protected $db;
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/**
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* Total number of pages that need fixing that are automatically resolveable
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* @var int
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*/
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private $resolvablePages = 0;
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/**
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* Total number of pages that need fixing
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* @var int
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*/
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private $totalPages = 0;
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/**
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* Total number of links that need fixing that are automatically resolveable
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* @var int
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*/
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private $resolvableLinks = 0;
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/**
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* Total number of erroneous links
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* @var int
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*/
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private $totalLinks = 0;
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/**
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* Total number of links deleted because they weren't automatically resolveable due to the
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* target already existing
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* @var int
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*/
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private $deletedLinks = 0;
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public function __construct() {
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parent::__construct();
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$this->addDescription( 'Find and fix pages affected by namespace addition/removal' );
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$this->addOption( 'fix', 'Attempt to automatically fix errors and delete broken links' );
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$this->addOption( 'merge', "Instead of renaming conflicts, do a history merge with " .
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"the correct title" );
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$this->addOption( 'add-suffix', "Dupes will be renamed with correct namespace with " .
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"<text> appended after the article name", false, true );
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$this->addOption( 'add-prefix', "Dupes will be renamed with correct namespace with " .
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"<text> prepended before the article name", false, true );
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$this->addOption( 'source-pseudo-namespace', "Move all pages with the given source " .
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"prefix (with an implied colon following it). If --dest-namespace is not specified, " .
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"the colon will be replaced with a hyphen.",
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false, true );
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$this->addOption( 'dest-namespace', "In combination with --source-pseudo-namespace, " .
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"specify the namespace ID of the destination.", false, true );
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$this->addOption( 'move-talk', "If this is specified, pages in the Talk namespace that " .
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"begin with a conflicting prefix will be renamed, for example " .
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"Talk:File:Foo -> File_Talk:Foo" );
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}
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public function execute() {
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$options = [
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'fix' => $this->hasOption( 'fix' ),
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'merge' => $this->hasOption( 'merge' ),
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'add-suffix' => $this->getOption( 'add-suffix', '' ),
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'add-prefix' => $this->getOption( 'add-prefix', '' ),
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'move-talk' => $this->hasOption( 'move-talk' ),
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'source-pseudo-namespace' => $this->getOption( 'source-pseudo-namespace', '' ),
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'dest-namespace' => intval( $this->getOption( 'dest-namespace', 0 ) )
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];
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if ( $options['source-pseudo-namespace'] !== '' ) {
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$retval = $this->checkPrefix( $options );
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} else {
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$retval = $this->checkAll( $options );
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}
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if ( $retval ) {
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$this->output( "\nLooks good!\n" );
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} else {
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$this->output( "\nOh noeees\n" );
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}
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}
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/**
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* Check all namespaces
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*
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* @param array $options Associative array of validated command-line options
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*
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* @return bool
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*/
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private function checkAll( $options ) {
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$contLang = MediaWikiServices::getInstance()->getContentLanguage();
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$spaces = [];
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// List interwikis first, so they'll be overridden
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// by any conflicting local namespaces.
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foreach ( $this->getInterwikiList() as $prefix ) {
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$name = $contLang->ucfirst( $prefix );
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$spaces[$name] = 0;
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}
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// Now pull in all canonical and alias namespaces...
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foreach (
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MediaWikiServices::getInstance()->getNamespaceInfo()->getCanonicalNamespaces()
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as $ns => $name
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) {
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// This includes $wgExtraNamespaces
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if ( $name !== '' ) {
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$spaces[$name] = $ns;
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}
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}
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foreach ( $contLang->getNamespaces() as $ns => $name ) {
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if ( $name !== '' ) {
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$spaces[$name] = $ns;
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}
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}
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foreach ( $contLang->getNamespaceAliases() as $name => $ns ) {
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$spaces[$name] = $ns;
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}
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// We'll need to check for lowercase keys as well,
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// since we're doing case-sensitive searches in the db.
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$capitalLinks = $this->getConfig()->get( 'CapitalLinks' );
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foreach ( $spaces as $name => $ns ) {
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$moreNames = [];
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$moreNames[] = $contLang->uc( $name );
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$moreNames[] = $contLang->ucfirst( $contLang->lc( $name ) );
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$moreNames[] = $contLang->ucwords( $name );
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$moreNames[] = $contLang->ucwords( $contLang->lc( $name ) );
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$moreNames[] = $contLang->ucwordbreaks( $name );
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$moreNames[] = $contLang->ucwordbreaks( $contLang->lc( $name ) );
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if ( !$capitalLinks ) {
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foreach ( $moreNames as $altName ) {
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$moreNames[] = $contLang->lcfirst( $altName );
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}
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$moreNames[] = $contLang->lcfirst( $name );
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}
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foreach ( array_unique( $moreNames ) as $altName ) {
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if ( $altName !== $name ) {
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$spaces[$altName] = $ns;
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}
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}
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}
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// Sort by namespace index, and if there are two with the same index,
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// break the tie by sorting by name
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$origSpaces = $spaces;
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uksort( $spaces, static function ( $a, $b ) use ( $origSpaces ) {
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return $origSpaces[$a] <=> $origSpaces[$b]
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?: $a <=> $b;
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} );
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$ok = true;
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foreach ( $spaces as $name => $ns ) {
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$ok = $this->checkNamespace( $ns, $name, $options ) && $ok;
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}
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$this->output(
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"{$this->totalPages} pages to fix, " .
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"{$this->resolvablePages} were resolvable.\n\n"
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);
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foreach ( $spaces as $name => $ns ) {
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if ( $ns != 0 ) {
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/* Fix up link destinations for non-interwiki links only.
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*
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* For example if a page has [[Foo:Bar]] and then a Foo namespace
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* is introduced, pagelinks needs to be updated to have
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* page_namespace = NS_FOO.
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*
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* If instead an interwiki prefix was introduced called "Foo",
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* the link should instead be moved to the iwlinks table. If a new
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* language is introduced called "Foo", or if there is a pagelink
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* [[fr:Bar]] when interlanguage magic links are turned on, the
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* link would have to be moved to the langlinks table. Let's put
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* those cases in the too-hard basket for now. The consequences are
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* not especially severe.
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* @fixme Handle interwiki links, and pagelinks to Category:, File:
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* which probably need reparsing.
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*/
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$this->checkLinkTable( 'pagelinks', 'pl', $ns, $name, $options );
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$this->checkLinkTable( 'templatelinks', 'tl', $ns, $name, $options );
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// The redirect table has interwiki links randomly mixed in, we
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// need to filter those out. For example [[w:Foo:Bar]] would
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// have rd_interwiki=w and rd_namespace=0, which would match the
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// query for a conflicting namespace "Foo" if filtering wasn't done.
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$this->checkLinkTable( 'redirect', 'rd', $ns, $name, $options,
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[ 'rd_interwiki' => null ] );
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$this->checkLinkTable( 'redirect', 'rd', $ns, $name, $options,
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[ 'rd_interwiki' => '' ] );
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}
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}
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$this->output(
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"{$this->totalLinks} links to fix, " .
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"{$this->resolvableLinks} were resolvable, " .
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"{$this->deletedLinks} were deleted.\n"
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);
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return $ok;
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}
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/**
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* @return string[]
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*/
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private function getInterwikiList() {
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$result = MediaWikiServices::getInstance()->getInterwikiLookup()->getAllPrefixes();
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return array_column( $result, 'iw_prefix' );
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}
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/**
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* Check a given prefix and try to move it into the given destination namespace
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*
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* @param int $ns Destination namespace id
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* @param string $name
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* @param array $options Associative array of validated command-line options
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* @return bool
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*/
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private function checkNamespace( $ns, $name, $options ) {
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$targets = $this->getTargetList( $ns, $name, $options );
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$count = $targets->numRows();
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$this->totalPages += $count;
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if ( $count == 0 ) {
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return true;
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}
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$dryRunNote = $options['fix'] ? '' : ' DRY RUN ONLY';
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$ok = true;
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foreach ( $targets as $row ) {
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// Find the new title and determine the action to take
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$newTitle = $this->getDestinationTitle(
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$ns, $name, $row->page_namespace, $row->page_title );
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$logStatus = false;
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if ( !$newTitle ) {
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$logStatus = 'invalid title';
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$action = 'abort';
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} elseif ( $newTitle->exists() ) {
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if ( $options['merge'] ) {
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if ( $this->canMerge( $row->page_id, $newTitle, $logStatus ) ) {
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$action = 'merge';
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} else {
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$action = 'abort';
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}
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} elseif ( $options['add-prefix'] == '' && $options['add-suffix'] == '' ) {
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$action = 'abort';
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$logStatus = 'dest title exists and --add-prefix not specified';
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} else {
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$newTitle = $this->getAlternateTitle( $newTitle, $options );
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if ( !$newTitle ) {
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$action = 'abort';
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$logStatus = 'alternate title is invalid';
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} elseif ( $newTitle->exists() ) {
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$action = 'abort';
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$logStatus = 'title conflict';
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} else {
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$action = 'move';
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$logStatus = 'alternate';
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}
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}
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} else {
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$action = 'move';
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$logStatus = 'no conflict';
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}
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// Take the action or log a dry run message
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$logTitle = "id={$row->page_id} ns={$row->page_namespace} dbk={$row->page_title}";
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$pageOK = true;
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switch ( $action ) {
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case 'abort':
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$this->output( "$logTitle *** $logStatus\n" );
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$pageOK = false;
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break;
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case 'move':
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$this->output( "$logTitle -> " .
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$newTitle->getPrefixedDBkey() . " ($logStatus)$dryRunNote\n" );
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if ( $options['fix'] ) {
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$pageOK = $this->movePage( $row->page_id, $newTitle );
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}
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break;
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case 'merge':
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$this->output( "$logTitle => " .
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$newTitle->getPrefixedDBkey() . " (merge)$dryRunNote\n" );
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if ( $options['fix'] ) {
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$pageOK = $this->mergePage( $row, $newTitle );
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}
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break;
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}
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if ( $pageOK ) {
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$this->resolvablePages++;
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} else {
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$ok = false;
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}
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}
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return $ok;
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}
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/**
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* Check and repair the destination fields in a link table
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* @param string $table The link table name
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* @param string $fieldPrefix The field prefix in the link table
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* @param int $ns Destination namespace id
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* @param string $name
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* @param array $options Associative array of validated command-line options
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* @param array $extraConds Extra conditions for the SQL query
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*/
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private function checkLinkTable( $table, $fieldPrefix, $ns, $name, $options,
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$extraConds = []
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) {
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$dbw = $this->getDB( DB_MASTER );
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$batchConds = [];
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$fromField = "{$fieldPrefix}_from";
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$namespaceField = "{$fieldPrefix}_namespace";
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$titleField = "{$fieldPrefix}_title";
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$batchSize = 500;
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$lbFactory = MediaWikiServices::getInstance()->getDBLoadBalancerFactory();
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while ( true ) {
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$res = $dbw->select(
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$table,
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[ $fromField, $namespaceField, $titleField ],
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array_merge(
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$batchConds,
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$extraConds,
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[
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$namespaceField => 0,
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$titleField . $dbw->buildLike( "$name:", $dbw->anyString() )
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]
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),
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__METHOD__,
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[
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'ORDER BY' => [ $titleField, $fromField ],
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'LIMIT' => $batchSize
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]
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);
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if ( $res->numRows() == 0 ) {
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break;
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}
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$rowsToDeleteIfStillExists = [];
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foreach ( $res as $row ) {
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$logTitle = "from={$row->$fromField} ns={$row->$namespaceField} " .
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"dbk={$row->$titleField}";
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$destTitle = $this->getDestinationTitle(
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$ns, $name, $row->$namespaceField, $row->$titleField );
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$this->totalLinks++;
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if ( !$destTitle ) {
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$this->output( "$table $logTitle *** INVALID\n" );
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continue;
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}
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$this->resolvableLinks++;
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if ( !$options['fix'] ) {
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$this->output( "$table $logTitle -> " .
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$destTitle->getPrefixedDBkey() . " DRY RUN\n" );
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continue;
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}
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$dbw->update( $table,
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// SET
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[
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$namespaceField => $destTitle->getNamespace(),
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$titleField => $destTitle->getDBkey()
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],
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// WHERE
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[
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$namespaceField => 0,
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$titleField => $row->$titleField,
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$fromField => $row->$fromField
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],
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__METHOD__,
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[ 'IGNORE' ]
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);
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$rowsToDeleteIfStillExists[] = $dbw->makeList(
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[
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$fromField => $row->$fromField,
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$namespaceField => $row->$namespaceField,
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$titleField => $row->$titleField,
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],
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IDatabase::LIST_AND
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);
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$this->output( "$table $logTitle -> " .
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$destTitle->getPrefixedDBkey() . "\n"
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);
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}
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if ( $options['fix'] && count( $rowsToDeleteIfStillExists ) > 0 ) {
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$dbw->delete(
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$table,
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$dbw->makeList( $rowsToDeleteIfStillExists, IDatabase::LIST_OR ),
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__METHOD__
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);
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$this->deletedLinks += $dbw->affectedRows();
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$this->resolvableLinks -= $dbw->affectedRows();
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}
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$encLastTitle = $dbw->addQuotes( $row->$titleField );
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$encLastFrom = $dbw->addQuotes( $row->$fromField );
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$batchConds = [
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"$titleField > $encLastTitle " .
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"OR ($titleField = $encLastTitle AND $fromField > $encLastFrom)"
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];
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$lbFactory->waitForReplication();
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}
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}
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/**
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* Move the given pseudo-namespace, either replacing the colon with a hyphen
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* (useful for pseudo-namespaces that conflict with interwiki links) or move
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* them to another namespace if specified.
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* @param array $options Associative array of validated command-line options
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* @return bool
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*/
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private function checkPrefix( $options ) {
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$prefix = $options['source-pseudo-namespace'];
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$ns = $options['dest-namespace'];
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$this->output( "Checking prefix \"$prefix\" vs namespace $ns\n" );
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return $this->checkNamespace( $ns, $prefix, $options );
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}
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/**
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* Find pages in main and talk namespaces that have a prefix of the new
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* namespace so we know titles that will need migrating
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*
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* @param int $ns Destination namespace id
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* @param string $name Prefix that is being made a namespace
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* @param array $options Associative array of validated command-line options
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*
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* @return IResultWrapper
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*/
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private function getTargetList( $ns, $name, $options ) {
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$dbw = $this->getDB( DB_MASTER );
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if (
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$options['move-talk'] &&
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MediaWikiServices::getInstance()->getNamespaceInfo()->isSubject( $ns )
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) {
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$checkNamespaces = [ NS_MAIN, NS_TALK ];
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} else {
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$checkNamespaces = NS_MAIN;
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}
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return $dbw->select( 'page',
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[
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'page_id',
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'page_title',
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'page_namespace',
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],
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[
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'page_namespace' => $checkNamespaces,
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'page_title' . $dbw->buildLike( "$name:", $dbw->anyString() ),
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],
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__METHOD__
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);
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}
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/**
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* Get the preferred destination title for a given target page.
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* @param int $ns The destination namespace ID
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* @param string $name The conflicting prefix
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* @param int $sourceNs The source namespace
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* @param int $sourceDbk The source DB key (i.e. page_title)
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* @return Title|false
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*/
|
|
private function getDestinationTitle( $ns, $name, $sourceNs, $sourceDbk ) {
|
|
$dbk = substr( $sourceDbk, strlen( "$name:" ) );
|
|
if ( $ns == 0 ) {
|
|
// An interwiki; try an alternate encoding with '-' for ':'
|
|
$dbk = "$name-" . $dbk;
|
|
}
|
|
$destNS = $ns;
|
|
$nsInfo = MediaWikiServices::getInstance()->getNamespaceInfo();
|
|
if ( $sourceNs == NS_TALK && $nsInfo->isSubject( $ns ) ) {
|
|
// This is an associated talk page moved with the --move-talk feature.
|
|
$destNS = $nsInfo->getTalk( $destNS );
|
|
}
|
|
$newTitle = Title::makeTitleSafe( $destNS, $dbk );
|
|
if ( !$newTitle || !$newTitle->canExist() ) {
|
|
return false;
|
|
}
|
|
return $newTitle;
|
|
}
|
|
|
|
/**
|
|
* Get an alternative title to move a page to. This is used if the
|
|
* preferred destination title already exists.
|
|
*
|
|
* @param LinkTarget $linkTarget
|
|
* @param array $options Associative array of validated command-line options
|
|
* @return Title|bool
|
|
*/
|
|
private function getAlternateTitle( LinkTarget $linkTarget, $options ) {
|
|
$prefix = $options['add-prefix'];
|
|
$suffix = $options['add-suffix'];
|
|
if ( $prefix == '' && $suffix == '' ) {
|
|
return false;
|
|
}
|
|
while ( true ) {
|
|
$dbk = $prefix . $linkTarget->getDBkey() . $suffix;
|
|
$title = Title::makeTitleSafe( $linkTarget->getNamespace(), $dbk );
|
|
if ( !$title ) {
|
|
return false;
|
|
}
|
|
if ( !$title->exists() ) {
|
|
return $title;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Move a page
|
|
*
|
|
* @param int $id The page_id
|
|
* @param LinkTarget $newLinkTarget The new title link target
|
|
* @return bool
|
|
*/
|
|
private function movePage( $id, LinkTarget $newLinkTarget ) {
|
|
$dbw = $this->getDB( DB_MASTER );
|
|
|
|
$dbw->update( 'page',
|
|
[
|
|
"page_namespace" => $newLinkTarget->getNamespace(),
|
|
"page_title" => $newLinkTarget->getDBkey(),
|
|
],
|
|
[
|
|
"page_id" => $id,
|
|
],
|
|
__METHOD__
|
|
);
|
|
|
|
// Update *_from_namespace in links tables
|
|
$fromNamespaceTables = [
|
|
[ 'pagelinks', 'pl' ],
|
|
[ 'templatelinks', 'tl' ],
|
|
[ 'imagelinks', 'il' ]
|
|
];
|
|
foreach ( $fromNamespaceTables as [ $table, $fieldPrefix ] ) {
|
|
$dbw->update( $table,
|
|
// SET
|
|
[ "{$fieldPrefix}_from_namespace" => $newLinkTarget->getNamespace() ],
|
|
// WHERE
|
|
[ "{$fieldPrefix}_from" => $id ],
|
|
__METHOD__
|
|
);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Determine if we can merge a page.
|
|
* We check if an inaccessible revision would become the latest and
|
|
* deny the merge if so -- it's theoretically possible to update the
|
|
* latest revision, but opens a can of worms -- search engine updates,
|
|
* recentchanges review, etc.
|
|
*
|
|
* @param int $id The page_id
|
|
* @param LinkTarget $linkTarget The new link target
|
|
* @param string &$logStatus This is set to the log status message on failure
|
|
* @return bool
|
|
*/
|
|
private function canMerge( $id, LinkTarget $linkTarget, &$logStatus ) {
|
|
$revisionLookup = MediaWikiServices::getInstance()->getRevisionLookup();
|
|
$latestDest = $revisionLookup->getRevisionByTitle( $linkTarget, 0,
|
|
IDBAccessObject::READ_LATEST );
|
|
$latestSource = $revisionLookup->getRevisionByPageId( $id, 0,
|
|
IDBAccessObject::READ_LATEST );
|
|
if ( $latestSource->getTimestamp() > $latestDest->getTimestamp() ) {
|
|
$logStatus = 'cannot merge since source is later';
|
|
return false;
|
|
} else {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Merge page histories
|
|
*
|
|
* @param stdClass $row Page row
|
|
* @param Title $newTitle The new title
|
|
* @return bool
|
|
*/
|
|
private function mergePage( $row, Title $newTitle ) {
|
|
$dbw = $this->getDB( DB_MASTER );
|
|
|
|
$id = $row->page_id;
|
|
|
|
// Construct the WikiPage object we will need later, while the
|
|
// page_id still exists. Note that this cannot use makeTitleSafe(),
|
|
// we are deliberately constructing an invalid title.
|
|
$sourceTitle = Title::makeTitle( $row->page_namespace, $row->page_title );
|
|
$sourceTitle->resetArticleID( $id );
|
|
$wikiPage = new WikiPage( $sourceTitle );
|
|
$wikiPage->loadPageData( 'fromdbmaster' );
|
|
|
|
$destId = $newTitle->getArticleID();
|
|
$this->beginTransaction( $dbw, __METHOD__ );
|
|
$dbw->update( 'revision',
|
|
// SET
|
|
[ 'rev_page' => $destId ],
|
|
// WHERE
|
|
[ 'rev_page' => $id ],
|
|
__METHOD__
|
|
);
|
|
|
|
$dbw->delete( 'page', [ 'page_id' => $id ], __METHOD__ );
|
|
|
|
$this->commitTransaction( $dbw, __METHOD__ );
|
|
|
|
/* Call LinksDeletionUpdate to delete outgoing links from the old title,
|
|
* and update category counts.
|
|
*
|
|
* Calling external code with a fake broken Title is a fairly dubious
|
|
* idea. It's necessary because it's quite a lot of code to duplicate,
|
|
* but that also makes it fragile since it would be easy for someone to
|
|
* accidentally introduce an assumption of title validity to the code we
|
|
* are calling.
|
|
*/
|
|
DeferredUpdates::addUpdate( new LinksDeletionUpdate( $wikiPage ) );
|
|
DeferredUpdates::doUpdates();
|
|
|
|
return true;
|
|
}
|
|
}
|
|
|
|
$maintClass = NamespaceDupes::class;
|
|
require_once RUN_MAINTENANCE_IF_MAIN;
|