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* Check for articles to fix after adding/deleting namespaces
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* Copyright (C) 2005-2007 Brion Vibber <brion@pobox.com>
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* http://www.mediawiki.org/
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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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* 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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* 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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* @ingroup Maintenance
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require_once( dirname(__FILE__) . '/Maintenance.php' );
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class NamespaceConflictChecker extends Maintenance {
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public function __construct() {
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parent::__construct();
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$this->mDescription = "";
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$this->addOption( 'fix', 'Attempt to automatically fix errors' );
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$this->addOption( 'suffix', "Dupes will be renamed with correct namespace with\n" .
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"\t\t<text> Appended after the article name", false, true );
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$this->addOption( 'prefix', "Do an explicit check for the given title prefix\n" .
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"\t\tappended after the article name", false, true );
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public function execute() {
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$this->db = wfGetDB( DB_MASTER );
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$wgTitle = Title::newFromText( 'Namespace title conflict cleanup script' );
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$fix = $this->hasOption( 'fix' );
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$suffix = $this->getOption( 'suffix', '' );
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$prefix = $this->getOption( 'prefix', '' );
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$key = intval( $this->getOption( 'key', 0 ) );
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$retval = $this->checkPrefix( $key, $prefix, $fix, $suffix );
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$retval = $this->checkAll( $fix, $suffix );
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$this->output( "\nLooks good!\n" );
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$this->output( "\nOh noeees\n" );
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* @param $fix bool Whether or not to fix broken entries
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* @param $suffix String Suffix to append to renamed articles
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private function checkAll( $fix, $suffix = '' ) {
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global $wgContLang, $wgNamespaceAliases, $wgCanonicalNamespaceNames;
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global $wgCapitalLinks;
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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 = $wgContLang->ucfirst( $prefix );
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// Now pull in all canonical and alias namespaces...
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foreach( $wgCanonicalNamespaceNames as $ns => $name ) {
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// This includes $wgExtraNamespaces
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foreach( $wgContLang->getNamespaces() as $ns => $name ) {
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foreach( $wgNamespaceAliases as $name => $ns ) {
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foreach( $wgContLang->getNamespaceAliases() as $name => $ns ) {
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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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foreach( $spaces as $name => $ns ) {
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$moreNames = array();
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$moreNames[] = $wgContLang->uc( $name );
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$moreNames[] = $wgContLang->ucfirst( $wgContLang->lc( $name ) );
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$moreNames[] = $wgContLang->ucwords( $name );
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$moreNames[] = $wgContLang->ucwords( $wgContLang->lc( $name ) );
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$moreNames[] = $wgContLang->ucwordbreaks( $name );
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$moreNames[] = $wgContLang->ucwordbreaks( $wgContLang->lc( $name ) );
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if( !$wgCapitalLinks ) {
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foreach( $moreNames as $altName ) {
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$moreNames[] = $wgContLang->lcfirst( $altName );
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$moreNames[] = $wgContLang->lcfirst( $name );
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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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foreach( $spaces as $name => $ns ) {
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$ok = $this->checkNamespace( $ns, $name, $fix, $suffix ) && $ok;
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* Get the interwiki list
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* @todo Needs to respect interwiki cache!
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private function getInterwikiList() {
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$result = $this->db->select( 'interwiki', array( 'iw_prefix' ) );
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foreach( $result as $row ) {
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$prefixes[] = $row->iw_prefix;
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$this->db->freeResult( $result );
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* @param $ns int A namespace id
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* @param $name String
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* @param $fix bool Whether to fix broken entries
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* @param $suffix String Suffix to append to renamed articles
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private function checkNamespace( $ns, $name, $fix, $suffix = '' ) {
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$conflicts = $this->getConflicts( $ns, $name );
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$count = count( $conflicts );
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foreach( $conflicts as $row ) {
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$resolvable = $this->reportConflict( $row, $suffix );
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$ok = $ok && $resolvable;
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if( $fix && ( $resolvable || $suffix != '' ) ) {
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$ok = $this->resolveConflict( $row, $resolvable, $suffix ) && $ok;
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* @todo: do this for reals
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private function checkPrefix( $key, $prefix, $fix, $suffix = '' ) {
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$this->output( "Checking prefix \"$prefix\" vs namespace $key\n" );
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return $this->checkNamespace( $key, $prefix, $fix, $suffix );
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* Find pages in mainspace that have a prefix of the new namespace
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* so we know titles that will need migrating
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* @param $ns int Namespace id (id for new namespace?)
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* @param $name String Prefix that is being made a namespace
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private function getConflicts( $ns, $name ) {
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$table = $this->db->tableName( $page );
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$prefix = $this->db->strencode( $name );
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$encNamespace = $this->db->addQuotes( $ns );
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$titleSql = "TRIM(LEADING '$prefix:' FROM {$page}_title)";
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// An interwiki; try an alternate encoding with '-' for ':'
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$titleSql = $this->db->buildConcat( array( "'$prefix-'", $titleSql ) );
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$sql = "SELECT {$page}_id AS id,
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{$page}_title AS oldtitle,
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$encNamespace AS namespace,
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WHERE {$page}_namespace=0
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AND {$page}_title " . $this->db->buildLike( $name . ':', $this->db->anyString() );
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$result = $this->db->query( $sql, __METHOD__ );
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foreach( $result as $row ) {
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$this->db->freeResult( $result );
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* Report any conflicts we find
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private function reportConflict( $row, $suffix ) {
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$newTitle = Title::makeTitleSafe( $row->namespace, $row->title );
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if( is_null($newTitle) || !$newTitle->canExist() ) {
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// Title is also an illegal title...
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// For the moment we'll let these slide to cleanupTitles or whoever.
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$this->output( sprintf( "... %d (0,\"%s\")\n",
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$this->output( "... *** cannot resolve automatically; illegal title ***\n" );
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$this->output( sprintf( "... %d (0,\"%s\") -> (%d,\"%s\") [[%s]]\n",
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$newTitle->getNamespace(),
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$newTitle->getDBkey(),
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$newTitle->getPrefixedText() ) );
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$id = $newTitle->getArticleId();
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$this->output( "... *** cannot resolve automatically; page exists with ID $id ***\n" );
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* Resolve any conflicts
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* @param $row Row from the page table to fix
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* @param $resolveable bool
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* @param $suffix String Suffix to append to the fixed page
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private function resolveConflict( $row, $resolvable, $suffix ) {
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$this->output( "... *** old title {$row->title}\n" );
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$row->title .= $suffix;
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$this->output( "... *** new title {$row->title}\n" );
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$title = Title::makeTitleSafe( $row->namespace, $row->title );
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$this->output( "... !!! invalid title\n" );
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if ( $id = $title->getArticleId() ) {
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$this->output( "... *** page exists with ID $id ***\n" );
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$this->output( "... *** using suffixed form [[" . $title->getPrefixedText() . "]] ***\n" );
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$this->resolveConflictOn( $row, 'page', 'page' );
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* Resolve a given conflict
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* @param $row Row from the old broken entry
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* @param $table String Table to update
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* @param $prefix String Prefix for column name, like page or ar
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private function resolveConflictOn( $row, $table, $prefix ) {
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$this->output( "... resolving on $table... " );
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$newTitle = Title::makeTitleSafe( $row->namespace, $row->title );
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$this->db->update( $table,
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"{$prefix}_namespace" => $newTitle->getNamespace(),
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"{$prefix}_title" => $newTitle->getDBkey(),
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"{$prefix}_namespace" => 0,
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"{$prefix}_title" => $row->oldtitle,
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$this->output( "ok.\n" );
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$maintClass = "NamespaceConflictChecker";
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require_once( DO_MAINTENANCE );
added
removed
wiki/maintenance/namespaceDupes.php
