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<?php
/**
* Check for articles to fix after adding/deleting namespaces
*
* Copyright © 2005-2007 Brion Vibber <brion@pobox.com>
* http://www.mediawiki.org/
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
* @ingroup Maintenance
*/
require_once( __DIR__ . '/Maintenance.php' );
/**
* Maintenance script that checks for articles to fix after
* adding/deleting namespaces.
*
* @ingroup Maintenance
*/
class NamespaceConflictChecker extends Maintenance {
/**
* @var DatabaseBase
*/
protected $db;
public function __construct() {
parent::__construct();
$this->mDescription = "";
$this->addOption( 'fix', 'Attempt to automatically fix errors' );
$this->addOption( 'suffix', "Dupes will be renamed with correct namespace with " .
"<text> appended after the article name", false, true );
$this->addOption( 'prefix', "Do an explicit check for the given title prefix " .
"appended after the article name", false, true );
}
public function execute() {
global $wgTitle;
$this->db = wfGetDB( DB_MASTER );
$wgTitle = Title::newFromText( 'Namespace title conflict cleanup script' );
$fix = $this->hasOption( 'fix' );
$suffix = $this->getOption( 'suffix', '' );
$prefix = $this->getOption( 'prefix', '' );
$key = intval( $this->getOption( 'key', 0 ) );
if ( $prefix ) {
$retval = $this->checkPrefix( $key, $prefix, $fix, $suffix );
} else {
$retval = $this->checkAll( $fix, $suffix );
}
if ( $retval ) {
$this->output( "\nLooks good!\n" );
} else {
$this->output( "\nOh noeees\n" );
}
}
/**
* @todo Document
* @param $fix Boolean: whether or not to fix broken entries
* @param $suffix String: suffix to append to renamed articles
*
* @return bool
*/
private function checkAll( $fix, $suffix = '' ) {
global $wgContLang, $wgNamespaceAliases, $wgCapitalLinks;
$spaces = array();
// List interwikis first, so they'll be overridden
// by any conflicting local namespaces.
foreach ( $this->getInterwikiList() as $prefix ) {
$name = $wgContLang->ucfirst( $prefix );
$spaces[$name] = 0;
}
// Now pull in all canonical and alias namespaces...
foreach ( MWNamespace::getCanonicalNamespaces() as $ns => $name ) {
// This includes $wgExtraNamespaces
if ( $name !== '' ) {
$spaces[$name] = $ns;
}
}
foreach ( $wgContLang->getNamespaces() as $ns => $name ) {
if ( $name !== '' ) {
$spaces[$name] = $ns;
}
}
foreach ( $wgNamespaceAliases as $name => $ns ) {
$spaces[$name] = $ns;
}
foreach ( $wgContLang->getNamespaceAliases() as $name => $ns ) {
$spaces[$name] = $ns;
}
// We'll need to check for lowercase keys as well,
// since we're doing case-sensitive searches in the db.
foreach ( $spaces as $name => $ns ) {
$moreNames = array();
$moreNames[] = $wgContLang->uc( $name );
$moreNames[] = $wgContLang->ucfirst( $wgContLang->lc( $name ) );
$moreNames[] = $wgContLang->ucwords( $name );
$moreNames[] = $wgContLang->ucwords( $wgContLang->lc( $name ) );
$moreNames[] = $wgContLang->ucwordbreaks( $name );
$moreNames[] = $wgContLang->ucwordbreaks( $wgContLang->lc( $name ) );
if ( !$wgCapitalLinks ) {
foreach ( $moreNames as $altName ) {
$moreNames[] = $wgContLang->lcfirst( $altName );
}
$moreNames[] = $wgContLang->lcfirst( $name );
}
foreach ( array_unique( $moreNames ) as $altName ) {
if ( $altName !== $name ) {
$spaces[$altName] = $ns;
}
}
}
ksort( $spaces );
asort( $spaces );
$ok = true;
foreach ( $spaces as $name => $ns ) {
$ok = $this->checkNamespace( $ns, $name, $fix, $suffix ) && $ok;
}
return $ok;
}
/**
* Get the interwiki list
*
* @return Array
*/
private function getInterwikiList() {
$result = Interwiki::getAllPrefixes();
$prefixes = array();
foreach ( $result as $row ) {
$prefixes[] = $row['iw_prefix'];
}
return $prefixes;
}
/**
* @todo Document
* @param $ns Integer: a namespace id
* @param $name String
* @param $fix Boolean: whether to fix broken entries
* @param $suffix String: suffix to append to renamed articles
* @return bool
*/
private function checkNamespace( $ns, $name, $fix, $suffix = '' ) {
$conflicts = $this->getConflicts( $ns, $name );
$count = count( $conflicts );
if ( $count == 0 ) {
return true;
}
$ok = true;
foreach ( $conflicts as $row ) {
$resolvable = $this->reportConflict( $row, $suffix );
$ok = $ok && $resolvable;
if ( $fix && ( $resolvable || $suffix != '' ) ) {
$ok = $this->resolveConflict( $row, $resolvable, $suffix ) && $ok;
}
}
return $ok;
}
/**
* @todo: do this for reals
* @param $key
* @param $prefix
* @param $fix
* @param $suffix string
* @return bool
*/
private function checkPrefix( $key, $prefix, $fix, $suffix = '' ) {
$this->output( "Checking prefix \"$prefix\" vs namespace $key\n" );
return $this->checkNamespace( $key, $prefix, $fix, $suffix );
}
/**
* Find pages in mainspace that have a prefix of the new namespace
* so we know titles that will need migrating
*
* @param $ns Integer: namespace id (id for new namespace?)
* @param $name String: prefix that is being made a namespace
*
* @return array
*/
private function getConflicts( $ns, $name ) {
$page = 'page';
$table = $this->db->tableName( $page );
$prefix = $this->db->strencode( $name );
$encNamespace = $this->db->addQuotes( $ns );
$titleSql = "TRIM(LEADING '$prefix:' FROM {$page}_title)";
if ( $ns == 0 ) {
// An interwiki; try an alternate encoding with '-' for ':'
$titleSql = $this->db->buildConcat( array( "'$prefix-'", $titleSql ) );
}
$sql = "SELECT {$page}_id AS id,
{$page}_title AS oldtitle,
$encNamespace + {$page}_namespace AS namespace,
$titleSql AS title,
{$page}_namespace AS oldnamespace
FROM {$table}
WHERE ( {$page}_namespace=0 OR {$page}_namespace=1 )
AND {$page}_title " . $this->db->buildLike( $name . ':', $this->db->anyString() );
$result = $this->db->query( $sql, __METHOD__ );
$set = array();
foreach ( $result as $row ) {
$set[] = $row;
}
return $set;
}
/**
* Report any conflicts we find
*
* @return bool
*/
private function reportConflict( $row, $suffix ) {
$newTitle = Title::makeTitleSafe( $row->namespace, $row->title );
if ( is_null( $newTitle ) || !$newTitle->canExist() ) {
// Title is also an illegal title...
// For the moment we'll let these slide to cleanupTitles or whoever.
$this->output( sprintf( "... %d (%d,\"%s\")\n",
$row->id,
$row->oldnamespace,
$row->oldtitle ) );
$this->output( "... *** cannot resolve automatically; illegal title ***\n" );
return false;
}
$this->output( sprintf( "... %d (%d,\"%s\") -> (%d,\"%s\") [[%s]]\n",
$row->id,
$row->oldnamespace,
$row->oldtitle,
$newTitle->getNamespace(),
$newTitle->getDBkey(),
$newTitle->getPrefixedText() ) );
$id = $newTitle->getArticleID();
if ( $id ) {
$this->output( "... *** cannot resolve automatically; page exists with ID $id ***\n" );
return false;
} else {
return true;
}
}
/**
* Resolve any conflicts
*
* @param $row Object: row from the page table to fix
* @param $resolvable Boolean
* @param $suffix String: suffix to append to the fixed page
* @return bool
*/
private function resolveConflict( $row, $resolvable, $suffix ) {
if ( !$resolvable ) {
$this->output( "... *** old title {$row->title}\n" );
while ( true ) {
$row->title .= $suffix;
$this->output( "... *** new title {$row->title}\n" );
$title = Title::makeTitleSafe( $row->namespace, $row->title );
if ( !$title ) {
$this->output( "... !!! invalid title\n" );
return false;
}
$id = $title->getArticleID();
if ( $id ) {
$this->output( "... *** page exists with ID $id ***\n" );
} else {
break;
}
}
$this->output( "... *** using suffixed form [[" . $title->getPrefixedText() . "]] ***\n" );
}
$this->resolveConflictOn( $row, 'page', 'page' );
return true;
}
/**
* Resolve a given conflict
*
* @param $row Object: row from the old broken entry
* @param $table String: table to update
* @param $prefix String: prefix for column name, like page or ar
* @return bool
*/
private function resolveConflictOn( $row, $table, $prefix ) {
$this->output( "... resolving on $table... " );
$newTitle = Title::makeTitleSafe( $row->namespace, $row->title );
$this->db->update( $table,
array(
"{$prefix}_namespace" => $newTitle->getNamespace(),
"{$prefix}_title" => $newTitle->getDBkey(),
),
array(
// "{$prefix}_namespace" => 0,
// "{$prefix}_title" => $row->oldtitle,
"{$prefix}_id" => $row->id,
),
__METHOD__ );
$this->output( "ok.\n" );
return true;
}
}
$maintClass = "NamespaceConflictChecker";
require_once( RUN_MAINTENANCE_IF_MAIN );