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<?php
/**
* 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 deletes all pages in the MediaWiki namespace
* of which the content is equal to the system default.
*
* @ingroup Maintenance
*/
class DeleteEqualMessages extends Maintenance {
public function __construct() {
parent::__construct();
$this->addDescription( 'Deletes all pages in the MediaWiki namespace that are equal to '
. 'the default message' );
$this->addOption( 'delete', 'Actually delete the pages (default: dry run)' );
$this->addOption( 'delete-talk', 'Don\'t leave orphaned talk pages behind during deletion' );
$this->addOption( 'lang-code', 'Check for subpages of this language code (default: root '
. 'page against content language). Use value "*" to run for all mwfile language code '
. 'subpages (including the base pages that override content language).', false, true );
}
/**
* @param string|bool $langCode See --lang-code option.
* @param array &$messageInfo
*/
protected function fetchMessageInfo( $langCode, array &$messageInfo ) {
global $wgContLang;
if ( $langCode ) {
$this->output( "\n... fetching message info for language: $langCode" );
$nonContLang = true;
} else {
$this->output( "\n... fetching message info for content language" );
$langCode = $wgContLang->getCode();
$nonContLang = false;
}
/* Based on SpecialAllmessages::reallyDoQuery #filter=modified */
$l10nCache = Language::getLocalisationCache();
$messageNames = $l10nCache->getSubitemList( 'en', 'messages' );
// Normalise message names for NS_MEDIAWIKI page_title
$messageNames = array_map( [ $wgContLang, 'ucfirst' ], $messageNames );
$statuses = AllMessagesTablePager::getCustomisedStatuses(
$messageNames, $langCode, $nonContLang );
// getCustomisedStatuses is stripping the sub page from the page titles, add it back
$titleSuffix = $nonContLang ? "/$langCode" : '';
foreach ( $messageNames as $key ) {
$customised = isset( $statuses['pages'][$key] );
if ( $customised ) {
$actual = wfMessage( $key )->inLanguage( $langCode )->plain();
$default = wfMessage( $key )->inLanguage( $langCode )->useDatabase( false )->plain();
$messageInfo['relevantPages']++;
if (
// Exclude messages that are empty by default, such as sitenotice, specialpage
// summaries and accesskeys.
$default !== '' && $default !== '-' &&
$actual === $default
) {
$hasTalk = isset( $statuses['talks'][$key] );
$messageInfo['results'][] = [
'title' => $key . $titleSuffix,
'hasTalk' => $hasTalk,
];
$messageInfo['equalPages']++;
if ( $hasTalk ) {
$messageInfo['equalPagesTalks']++;
}
}
}
}
}
public function execute() {
$doDelete = $this->hasOption( 'delete' );
$doDeleteTalk = $this->hasOption( 'delete-talk' );
$langCode = $this->getOption( 'lang-code' );
$messageInfo = [
'relevantPages' => 0,
'equalPages' => 0,
'equalPagesTalks' => 0,
'results' => [],
];
$this->output( 'Checking for pages with default message...' );
// Load message information
if ( $langCode ) {
$langCodes = Language::fetchLanguageNames( null, 'mwfile' );
if ( $langCode === '*' ) {
// All valid lang-code subpages in NS_MEDIAWIKI that
// override the messsages in that language
foreach ( $langCodes as $key => $value ) {
$this->fetchMessageInfo( $key, $messageInfo );
}
// Lastly, the base pages in NS_MEDIAWIKI that override
// messages in content language
$this->fetchMessageInfo( false, $messageInfo );
} else {
if ( !isset( $langCodes[$langCode] ) ) {
$this->error( 'Invalid language code: ' . $langCode, 1 );
}
$this->fetchMessageInfo( $langCode, $messageInfo );
}
} else {
$this->fetchMessageInfo( false, $messageInfo );
}
if ( $messageInfo['equalPages'] === 0 ) {
// No more equal messages left
$this->output( "\ndone.\n" );
return;
}
$this->output( "\n{$messageInfo['relevantPages']} pages in the MediaWiki namespace "
. "override messages." );
$this->output( "\n{$messageInfo['equalPages']} pages are equal to the default message "
. "(+ {$messageInfo['equalPagesTalks']} talk pages).\n" );
if ( !$doDelete ) {
$list = '';
foreach ( $messageInfo['results'] as $result ) {
$title = Title::makeTitle( NS_MEDIAWIKI, $result['title'] );
$list .= "* [[$title]]\n";
if ( $result['hasTalk'] ) {
$title = Title::makeTitle( NS_MEDIAWIKI_TALK, $result['title'] );
$list .= "* [[$title]]\n";
}
}
$this->output( "\nList:\n$list\nRun the script again with --delete to delete these pages" );
if ( $messageInfo['equalPagesTalks'] !== 0 ) {
$this->output( " (include --delete-talk to also delete the talk pages)" );
}
$this->output( "\n" );
return;
}
$user = User::newSystemUser( 'MediaWiki default', [ 'steal' => true ] );
if ( !$user ) {
$this->error( "Invalid username", true );
}
global $wgUser;
$wgUser = $user;
// Hide deletions from RecentChanges
$user->addGroup( 'bot' );
// Handle deletion
$this->output( "\n...deleting equal messages (this may take a long time!)..." );
$dbw = $this->getDB( DB_MASTER );
foreach ( $messageInfo['results'] as $result ) {
wfWaitForSlaves();
$dbw->ping();
$title = Title::makeTitle( NS_MEDIAWIKI, $result['title'] );
$this->output( "\n* [[$title]]" );
$page = WikiPage::factory( $title );
$error = ''; // Passed by ref
$success = $page->doDeleteArticle( 'No longer required', false, 0, true, $error, $user );
if ( !$success ) {
$this->output( " (Failed!)" );
}
if ( $result['hasTalk'] && $doDeleteTalk ) {
$title = Title::makeTitle( NS_MEDIAWIKI_TALK, $result['title'] );
$this->output( "\n* [[$title]]" );
$page = WikiPage::factory( $title );
$error = ''; // Passed by ref
$success = $page->doDeleteArticle( 'Orphaned talk page of no longer required message',
false, 0, true, $error, $user );
if ( !$success ) {
$this->output( " (Failed!)" );
}
}
}
$this->output( "\n\ndone!\n" );
}
}
$maintClass = "DeleteEqualMessages";
require_once RUN_MAINTENANCE_IF_MAIN;