User:Leucosticte/WikiPage.php

<?php /** * Base representation for a MediaWiki page. * * 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 */

/** * Abstract class for type hinting (accepts WikiPage, Article, ImagePage, CategoryPage) */ interface Page { }

/** * Class representing a MediaWiki article and history. * * Some fields are public only for backwards-compatibility. Use accessors. * In the past, this class was part of Article.php and everything was public. * * @internal documentation reviewed 15 Mar 2010 */ class WikiPage implements Page, IDBAccessObject { // Constants for $mDataLoadedFrom and related

/**	 * @var Title */	public $mTitle = null;

/**@*/

/** @var stdclass Map of cache fields (text, parser output, ect) for a proposed/new edit */ public $mPreparedEdit = false;

/**	 * @var int */	protected $mId = null;

/**	 * @var int One of the READ_* constants */	protected $mDataLoadedFrom = self::READ_NONE;

/**	 * @var Title */	protected $mRedirectTarget = null;

/**	 * @var Revision */	protected $mLastRevision = null;

/**	 * @var string Timestamp of the current revision or empty string if not loaded */	protected $mTimestamp = '';

/**	 * @var string */	protected $mTouched = '19700101000000';

/**	 * @var string */	protected $mLinksUpdated = '19700101000000';

/**	 * @var int|null */	protected $mCounter = null;

/**	 * Constructor and clear the article * @param Title $title Reference to a Title object. */	public function __construct( Title $title ) { $this->mTitle = $title; }

/**	 * Create a WikiPage object of the appropriate class for the given title. *	 * @param Title $title *	 * @throws MWException * @return WikiPage Object of the appropriate type */	public static function factory( Title $title ) { $ns = $title->getNamespace;

if ( $ns == NS_MEDIA ) { throw new MWException( "NS_MEDIA is a virtual namespace; use NS_FILE." ); } elseif ( $ns < 0 ) { throw new MWException( "Invalid or virtual namespace $ns given." ); }

switch ( $ns ) { case NS_FILE: $page = new WikiFilePage( $title ); break; case NS_CATEGORY: $page = new WikiCategoryPage( $title ); break; default: $page = new WikiPage( $title ); }

return $page; }

/**	 * Constructor from a page id	 * * @param int $id Article ID to load * @param string|int $from One of the following values: *       - "fromdb" or WikiPage::READ_NORMAL to select from a slave database *       - "fromdbmaster" or WikiPage::READ_LATEST to select from the master database *	 * @return WikiPage|null */	public static function newFromID( $id, $from = 'fromdb' ) { // page id's are never 0 or negative, see bug 61166 if ( $id < 1 ) { return null; }

$from = self::convertSelectType( $from ); $db = wfGetDB( $from === self::READ_LATEST ? DB_MASTER : DB_SLAVE ); $row = $db->selectRow( 'page', self::selectFields, array( 'page_id' => $id ), __METHOD__ ); if ( !$row ) { return null; }		return self::newFromRow( $row, $from ); }

/**	 * Constructor from a database row *	 * @since 1.20 * @param object $row Database row containing at least fields returned by selectFields. * @param string|int $from Source of $data: *       - "fromdb" or WikiPage::READ_NORMAL: from a slave DB	 *        - "fromdbmaster" or WikiPage::READ_LATEST: from the master DB	 *        - "forupdate" or WikiPage::READ_LOCKING: from the master DB using SELECT FOR UPDATE * @return WikiPage */	public static function newFromRow( $row, $from = 'fromdb' ) { $page = self::factory( Title::newFromRow( $row ) ); $page->loadFromRow( $row, $from ); return $page; }

/**	 * Convert 'fromdb', 'fromdbmaster' and 'forupdate' to READ_* constants. *	 * @param object|string|int $type * @return mixed */	private static function convertSelectType( $type ) { switch ( $type ) { case 'fromdb': return self::READ_NORMAL; case 'fromdbmaster': return self::READ_LATEST; case 'forupdate': return self::READ_LOCKING; default: // It may already be an integer or whatever else return $type; }	}

/**	 * Returns overrides for action handlers. * Classes listed here will be used instead of the default one when * (and only when) $wgActions[$action] === true. This allows subclasses * to override the default behavior. *	 * @todo Move this UI stuff somewhere else *	 * @return array */	public function getActionOverrides { $content_handler = $this->getContentHandler; return $content_handler->getActionOverrides; }

/**	 * Returns the ContentHandler instance to be used to deal with the content of this WikiPage. *	 * Shorthand for ContentHandler::getForModelID( $this->getContentModel ); *	 * @return ContentHandler *	 * @since 1.21 */	public function getContentHandler { return ContentHandler::getForModelID( $this->getContentModel ); }

/**	 * Get the title object of the article * @return Title Title object of this page */	public function getTitle { return $this->mTitle; }

/**	 * Clear the object * @return void */	public function clear { $this->mDataLoaded = false; $this->mDataLoadedFrom = self::READ_NONE;

$this->clearCacheFields; }

/**	 * Clear the object cache fields * @return void */	protected function clearCacheFields { $this->mId = null; $this->mCounter = null; $this->mRedirectTarget = null; // Title object if set $this->mLastRevision = null; // Latest revision $this->mTouched = '19700101000000'; $this->mLinksUpdated = '19700101000000'; $this->mTimestamp = ''; $this->mIsRedirect = false; $this->mLatest = false; // Bug 57026: do not clear mPreparedEdit since prepareTextForEdit already checks // the requested rev ID and content against the cached one for equality. For most // content types, the output should not change during the lifetime of this cache. // Clearing it can cause extra parses on edit for no reason. }

/**	 * Clear the mPreparedEdit cache field, as may be needed by mutable content types * @return void * @since 1.23 */	public function clearPreparedEdit { $this->mPreparedEdit = false; }

/**	 * Return the list of revision fields that should be selected to create * a new page. *	 * @return array */	public static function selectFields { global $wgContentHandlerUseDB, $wgPageLanguageUseDB;

$fields = array(			'page_id',			'page_namespace',			'page_title',			'page_restrictions',			'page_counter',			'page_is_redirect',			'page_is_new',			'page_random',			'page_touched',			'page_links_updated',			'page_latest',			'page_len',		);

if ( $wgContentHandlerUseDB ) { $fields[] = 'page_content_model'; }

if ( $wgPageLanguageUseDB ) { $fields[] = 'page_lang'; }

return $fields; }

/**	 * Fetch a page record with the given conditions * @param DatabaseBase $dbr * @param array $conditions * @param array $options * @return object|bool Database result resource, or false on failure */	protected function pageData( $dbr, $conditions, $options = array ) { $fields = self::selectFields;

wfRunHooks( 'ArticlePageDataBefore', array( &$this, &$fields ) );

$row = $dbr->selectRow( 'page', $fields, $conditions, __METHOD__, $options );

wfRunHooks( 'ArticlePageDataAfter', array( &$this, &$row ) );

return $row; }

/**	 * Fetch a page record matching the Title object's namespace and title * using a sanitized title string *	 * @param DatabaseBase $dbr * @param Title $title * @param array $options * @return object|bool Database result resource, or false on failure */	public function pageDataFromTitle( $dbr, $title, $options = array ) { return $this->pageData( $dbr, array( 'page_namespace' => $title->getNamespace, 'page_title' => $title->getDBkey ), $options ); }

/**	 * Fetch a page record matching the requested ID	 * * @param DatabaseBase $dbr * @param int $id * @param array $options * @return object|bool Database result resource, or false on failure */	public function pageDataFromId( $dbr, $id, $options = array ) { return $this->pageData( $dbr, array( 'page_id' => $id ), $options ); }

/**	 * Set the general counter, title etc data loaded from * some source. *	 * @param object|string|int $from One of the following: *  - A DB query result object. *  - "fromdb" or WikiPage::READ_NORMAL to get from a slave DB. *  - "fromdbmaster" or WikiPage::READ_LATEST to get from the master DB. *  - "forupdate"  or WikiPage::READ_LOCKING to get from the master DB *    using SELECT FOR UPDATE. *	 * @return void */	public function loadPageData( $from = 'fromdb' ) { $from = self::convertSelectType( $from ); if ( is_int( $from ) && $from <= $this->mDataLoadedFrom ) { // We already have the data from the correct location, no need to load it twice. return; }

if ( $from === self::READ_LOCKING ) { $data = $this->pageDataFromTitle( wfGetDB( DB_MASTER ), $this->mTitle, array( 'FOR UPDATE' ) ); } elseif ( $from === self::READ_LATEST ) { $data = $this->pageDataFromTitle( wfGetDB( DB_MASTER ), $this->mTitle ); } elseif ( $from === self::READ_NORMAL ) { $data = $this->pageDataFromTitle( wfGetDB( DB_SLAVE ), $this->mTitle ); // Use a "last rev inserted" timestamp key to diminish the issue of slave lag. // Note that DB also stores the master position in the session and checks it. $touched = $this->getCachedLastEditTime; if ( $touched ) { // key set if ( !$data || $touched > wfTimestamp( TS_MW, $data->page_touched ) ) { $from = self::READ_LATEST; $data = $this->pageDataFromTitle( wfGetDB( DB_MASTER ), $this->mTitle ); }			}		} else { // No idea from where the caller got this data, assume slave database. $data = $from; $from = self::READ_NORMAL; }

$this->loadFromRow( $data, $from ); }

/**	 * Load the object from a database row *	 * @since 1.20 * @param object $data Database row containing at least fields returned by selectFields * @param string|int $from One of the following: *       - "fromdb" or WikiPage::READ_NORMAL if the data comes from a slave DB	 *        - "fromdbmaster" or WikiPage::READ_LATEST if the data comes from the master DB	 *        - "forupdate"  or WikiPage::READ_LOCKING if the data comes from from *         the master DB using SELECT FOR UPDATE */	public function loadFromRow( $data, $from ) { $lc = LinkCache::singleton; $lc->clearLink( $this->mTitle );

if ( $data ) { $lc->addGoodLinkObjFromRow( $this->mTitle, $data );

$this->mTitle->loadFromRow( $data );

// Old-fashioned restrictions $this->mTitle->loadRestrictions( $data->page_restrictions );

$this->mId = intval( $data->page_id ); $this->mCounter = intval( $data->page_counter ); $this->mTouched = wfTimestamp( TS_MW, $data->page_touched ); $this->mLinksUpdated = wfTimestampOrNull( TS_MW, $data->page_links_updated ); $this->mIsRedirect = intval( $data->page_is_redirect ); $this->mLatest = intval( $data->page_latest ); // Bug 37225: $latest may no longer match the cached latest Revision object. // Double-check the ID of any cached latest Revision object for consistency. if ( $this->mLastRevision && $this->mLastRevision->getId != $this->mLatest ) { $this->mLastRevision = null; $this->mTimestamp = ''; }		} else { $lc->addBadLinkObj( $this->mTitle );

$this->mTitle->loadFromRow( false );

$this->clearCacheFields;

$this->mId = 0; }

$this->mDataLoaded = true; $this->mDataLoadedFrom = self::convertSelectType( $from ); }

/**	 * @return int Page ID	 */ public function getId { if ( !$this->mDataLoaded ) { $this->loadPageData; }		return $this->mId; }

/**	 * @return bool Whether or not the page exists in the database */	public function exists { if ( !$this->mDataLoaded ) { $this->loadPageData; }		return $this->mId > 0; }

/**	 * Check if this page is something we're going to be showing * some sort of sensible content for. If we return false, page * views (plain action=view) will return an HTTP 404 response, * so spiders and robots can know they're following a bad link. *	 * @return bool */	public function hasViewableContent { return $this->exists || $this->mTitle->isAlwaysKnown; }

/**	 * @return int The view count for the page */	public function getCount { if ( !$this->mDataLoaded ) { $this->loadPageData; }

return $this->mCounter; }

/**	 * Tests if the article content represents a redirect *	 * @return bool */	public function isRedirect { $content = $this->getContent; if ( !$content ) { return false; }

return $content->isRedirect; }

/**	 * Returns the page's content model id (see the CONTENT_MODEL_XXX constants). *	 * Will use the revisions actual content model if the page exists, * and the page's default if the page doesn't exist yet. *	 * @return string *	 * @since 1.21 */	public function getContentModel { if ( $this->exists ) { // look at the revision's actual content model $rev = $this->getRevision;

if ( $rev !== null ) { return $rev->getContentModel; } else { $title = $this->mTitle->getPrefixedDBkey; wfWarn( "Page $title exists but has no (visible) revisions!" ); }		}

// use the default model for this page return $this->mTitle->getContentModel; }

/**	 * Loads page_touched and returns a value indicating if it should be used * @return bool true if not a redirect */	public function checkTouched { if ( !$this->mDataLoaded ) { $this->loadPageData; }		return !$this->mIsRedirect; }

/**	 * Get the page_touched field * @return string Containing GMT timestamp */	public function getTouched { if ( !$this->mDataLoaded ) { $this->loadPageData; }		return $this->mTouched; }

/**	 * Get the page_links_updated field * @return string|null Containing GMT timestamp */	public function getLinksTimestamp { if ( !$this->mDataLoaded ) { $this->loadPageData; }		return $this->mLinksUpdated; }

/**	 * Get the page_latest field * @return int rev_id of current revision */	public function getLatest { if ( !$this->mDataLoaded ) { $this->loadPageData; }		return (int)$this->mLatest; }

/**	 * Get the Revision object of the oldest revision * @return Revision|null */	public function getOldestRevision { wfProfileIn( __METHOD__ );

// Try using the slave database first, then try the master $continue = 2; $db = wfGetDB( DB_SLAVE ); $revSelectFields = Revision::selectFields;

$row = null; while ( $continue ) { $row = $db->selectRow(				array( 'page', 'revision' ),				$revSelectFields,				array( 'page_namespace' => $this->mTitle->getNamespace, 'page_title' => $this->mTitle->getDBkey, 'rev_page = page_id' ),				__METHOD__,				array( 'ORDER BY' => 'rev_timestamp ASC' )			);

if ( $row ) { $continue = 0; } else { $db = wfGetDB( DB_MASTER ); $continue--; }		}

wfProfileOut( __METHOD__ ); return $row ? Revision::newFromRow( $row ) : null; }

/**	 * Loads everything except the text * This isn't necessary for all uses, so it's only done if needed. */	protected function loadLastEdit { if ( $this->mLastRevision !== null ) { return; // already loaded }

$latest = $this->getLatest; if ( !$latest ) { return; // page doesn't exist or is missing page_latest info }

// Bug 37225: if session S1 loads the page row FOR UPDATE, the result always includes the // latest changes committed. This is true even within REPEATABLE-READ transactions, where // S1 normally only sees changes committed before the first S1 SELECT. Thus we need S1 to		// also gets the revision row FOR UPDATE; otherwise, it may not find it since a page row // UPDATE and revision row INSERT by S2 may have happened after the first S1 SELECT. // http://dev.mysql.com/doc/refman/5.0/en/set-transaction.html#isolevel_repeatable-read. $flags = ( $this->mDataLoadedFrom == self::READ_LOCKING ) ? Revision::READ_LOCKING : 0; $revision = Revision::newFromPageId( $this->getId, $latest, $flags ); if ( $revision ) { // sanity $this->setLastEdit( $revision ); }	}

/**	 * Set the latest revision * @param Revision $revision */	protected function setLastEdit( Revision $revision ) { $this->mLastRevision = $revision; $this->mTimestamp = $revision->getTimestamp; }

/**	 * Get the latest revision * @return Revision|null */	public function getRevision { $this->loadLastEdit; if ( $this->mLastRevision ) { return $this->mLastRevision; }		return null; }

/**	 * Get the content of the current revision. No side-effects... *	 * @param int $audience int One of: *  Revision::FOR_PUBLIC       to be displayed to all users *  Revision::FOR_THIS_USER    to be displayed to $wgUser *  Revision::RAW              get the text regardless of permissions * @param User $user User object to check for, only if FOR_THIS_USER is passed *  to the $audience parameter * @return Content|null The content of the current revision *	 * @since 1.21 */	public function getContent( $audience = Revision::FOR_PUBLIC, User $user = null ) { $this->loadLastEdit; if ( $this->mLastRevision ) { return $this->mLastRevision->getContent( $audience, $user ); }		return null; }

/**	 * Get the text of the current revision. No side-effects... *	 * @param int $audience One of: *  Revision::FOR_PUBLIC       to be displayed to all users *  Revision::FOR_THIS_USER    to be displayed to the given user *  Revision::RAW              get the text regardless of permissions * @param User $user User object to check for, only if FOR_THIS_USER is passed *  to the $audience parameter * @return string|bool The text of the current revision * @deprecated since 1.21, getContent should be used instead. */	public function getText( $audience = Revision::FOR_PUBLIC, User $user = null ) { ContentHandler::deprecated( __METHOD__, '1.21' );

$this->loadLastEdit; if ( $this->mLastRevision ) { return $this->mLastRevision->getText( $audience, $user ); }		return false; }

/**	 * Get the text of the current revision. No side-effects... *	 * @return string|bool The text of the current revision. False on failure * @deprecated since 1.21, getContent should be used instead. */	public function getRawText { ContentHandler::deprecated( __METHOD__, '1.21' );

return $this->getText( Revision::RAW ); }

/**	 * @return string MW timestamp of last article revision */	public function getTimestamp { // Check if the field has been filled by WikiPage::setTimestamp if ( !$this->mTimestamp ) { $this->loadLastEdit; }

return wfTimestamp( TS_MW, $this->mTimestamp ); }

/**	 * Set the page timestamp (use only to avoid DB queries) * @param string $ts MW timestamp of last article revision * @return void */	public function setTimestamp( $ts ) { $this->mTimestamp = wfTimestamp( TS_MW, $ts ); }

/**	 * @param int $audience One of: *  Revision::FOR_PUBLIC       to be displayed to all users *  Revision::FOR_THIS_USER    to be displayed to the given user *  Revision::RAW              get the text regardless of permissions * @param User $user User object to check for, only if FOR_THIS_USER is passed *  to the $audience parameter * @return int user ID for the user that made the last article revision */	public function getUser( $audience = Revision::FOR_PUBLIC, User $user = null ) { $this->loadLastEdit; if ( $this->mLastRevision ) { return $this->mLastRevision->getUser( $audience, $user ); } else { return -1; }	}

/**	 * Get the User object of the user who created the page * @param int $audience One of: *  Revision::FOR_PUBLIC       to be displayed to all users *  Revision::FOR_THIS_USER    to be displayed to the given user *  Revision::RAW              get the text regardless of permissions * @param User $user User object to check for, only if FOR_THIS_USER is passed *  to the $audience parameter * @return User|null */	public function getCreator( $audience = Revision::FOR_PUBLIC, User $user = null ) { $revision = $this->getOldestRevision; if ( $revision ) { $userName = $revision->getUserText( $audience, $user ); return User::newFromName( $userName, false ); } else { return null; }	}

/**	 * @param int $audience One of: *  Revision::FOR_PUBLIC       to be displayed to all users *  Revision::FOR_THIS_USER    to be displayed to the given user *  Revision::RAW              get the text regardless of permissions * @param User $user User object to check for, only if FOR_THIS_USER is passed *  to the $audience parameter * @return string username of the user that made the last article revision */	public function getUserText( $audience = Revision::FOR_PUBLIC, User $user = null ) { $this->loadLastEdit; if ( $this->mLastRevision ) { return $this->mLastRevision->getUserText( $audience, $user ); } else { return ''; }	}

/**	 * @param int $audience One of: *  Revision::FOR_PUBLIC       to be displayed to all users *  Revision::FOR_THIS_USER    to be displayed to the given user *  Revision::RAW              get the text regardless of permissions * @param User $user User object to check for, only if FOR_THIS_USER is passed *  to the $audience parameter * @return string Comment stored for the last article revision */	public function getComment( $audience = Revision::FOR_PUBLIC, User $user = null ) { $this->loadLastEdit; if ( $this->mLastRevision ) { return $this->mLastRevision->getComment( $audience, $user ); } else { return ''; }	}

/**	 * Returns true if last revision was marked as "minor edit" *	 * @return bool Minor edit indicator for the last article revision. */	public function getMinorEdit { $this->loadLastEdit; if ( $this->mLastRevision ) { return $this->mLastRevision->isMinor; } else { return false; }	}

/**	 * Get the cached timestamp for the last time the page changed. * This is only used to help handle slave lag by comparing to page_touched. * @return string MW timestamp */	protected function getCachedLastEditTime { global $wgMemc; $key = wfMemcKey( 'page-lastedit', md5( $this->mTitle->getPrefixedDBkey ) ); return $wgMemc->get( $key ); }

/**	 * Set the cached timestamp for the last time the page changed. * This is only used to help handle slave lag by comparing to page_touched. * @param string $timestamp * @return void */	public function setCachedLastEditTime( $timestamp ) { global $wgMemc; $key = wfMemcKey( 'page-lastedit', md5( $this->mTitle->getPrefixedDBkey ) ); $wgMemc->set( $key, wfTimestamp( TS_MW, $timestamp ), 60 * 15 ); }

/**	 * Determine whether a page would be suitable for being counted as an	 * article in the site_stats table based on the title & its content *	 * @param object|bool $editInfo (false): object returned by prepareTextForEdit, *  if false, the current database state will be used * @return bool */	public function isCountable( $editInfo = false ) { global $wgArticleCountMethod;

if ( !$this->mTitle->isContentPage ) { return false; }

if ( $editInfo ) { $content = $editInfo->pstContent; } else { $content = $this->getContent; }

if ( !$content || $content->isRedirect ) { return false; }

$hasLinks = null;

if ( $wgArticleCountMethod === 'link' ) { // nasty special case to avoid re-parsing to detect links

if ( $editInfo ) { // ParserOutput::getLinks is a 2D array of page links, so				// to be really correct we would need to recurse in the array // but the main array should only have items in it if there are // links. $hasLinks = (bool)count( $editInfo->output->getLinks ); } else { $hasLinks = (bool)wfGetDB( DB_SLAVE )->selectField( 'pagelinks', 1,					array( 'pl_from' => $this->getId ), __METHOD__ ); }		}

return $content->isCountable( $hasLinks ); }

/**	 * If this page is a redirect, get its target *	 * The target will be fetched from the redirect table if possible. * If this page doesn't have an entry there, call insertRedirect * @return Title|null Title object, or null if this page is not a redirect */	public function getRedirectTarget { if ( !$this->mTitle->isRedirect ) { return null; }

if ( $this->mRedirectTarget !== null ) { return $this->mRedirectTarget; }

// Query the redirect table $dbr = wfGetDB( DB_SLAVE ); $row = $dbr->selectRow( 'redirect',			array( 'rd_namespace', 'rd_title', 'rd_fragment', 'rd_interwiki' ),			array( 'rd_from' => $this->getId ),			__METHOD__		);

// rd_fragment and rd_interwiki were added later, populate them if empty if ( $row && !is_null( $row->rd_fragment ) && !is_null( $row->rd_interwiki ) ) { $this->mRedirectTarget = Title::makeTitle(				$row->rd_namespace, $row->rd_title,				$row->rd_fragment, $row->rd_interwiki ); return $this->mRedirectTarget; }

// This page doesn't have an entry in the redirect table $this->mRedirectTarget = $this->insertRedirect; return $this->mRedirectTarget; }

/**	 * Insert an entry for this page into the redirect table. *	 * Don't call this function directly unless you know what you're doing. * @return Title|null Title object or null if not a redirect */	public function insertRedirect { // recurse through to only get the final target $content = $this->getContent; $retval = $content ? $content->getUltimateRedirectTarget : null; if ( !$retval ) { return null; }		$this->insertRedirectEntry( $retval ); return $retval; }

/**	 * Insert or update the redirect table entry for this page to indicate * it redirects to $rt. * @param Title $rt Redirect target */	public function insertRedirectEntry( $rt ) { $dbw = wfGetDB( DB_MASTER ); $dbw->replace( 'redirect', array( 'rd_from' ),			array( 'rd_from' => $this->getId, 'rd_namespace' => $rt->getNamespace, 'rd_title' => $rt->getDBkey, 'rd_fragment' => $rt->getFragment, 'rd_interwiki' => $rt->getInterwiki, ),			__METHOD__		); }

/**	 * Get the Title object or URL this page redirects to	 * * @return bool|Title|string false, Title of in-wiki target, or string with URL */	public function followRedirect { return $this->getRedirectURL( $this->getRedirectTarget ); }

/**	 * Get the Title object or URL to use for a redirect. We use Title * objects for same-wiki, non-special redirects and URLs for everything * else. * @param Title $rt Redirect target * @return bool|Title|string false, Title object of local target, or string with URL */	public function getRedirectURL( $rt ) { if ( !$rt ) { return false; }

if ( $rt->isExternal ) { if ( $rt->isLocal ) { // Offsite wikis need an HTTP redirect. //				// This can be hard to reverse and may produce loops, // so they may be disabled in the site configuration. $source = $this->mTitle->getFullURL( 'redirect=no' ); return $rt->getFullURL( array( 'rdfrom' => $source ) ); } else { // External pages pages without "local" bit set are not valid // redirect targets return false; }		}

if ( $rt->isSpecialPage ) { // Gotta handle redirects to special pages differently: // Fill the HTTP response "Location" header and ignore // the rest of the page we're on. //			// Some pages are not valid targets if ( $rt->isValidRedirectTarget ) { return $rt->getFullURL; } else { return false; }		}

return $rt; }

/**	 * Get a list of users who have edited this article, not including the user who made * the most recent revision, which you can get from $article->getUser if you want it	 * @return UserArrayFromResult */	public function getContributors { // @todo FIXME: This is expensive; cache this info somewhere.

$dbr = wfGetDB( DB_SLAVE );

if ( $dbr->implicitGroupby ) { $realNameField = 'user_real_name'; } else { $realNameField = 'MIN(user_real_name) AS user_real_name'; }

$tables = array( 'revision', 'user' );

$fields = array(			'user_id' => 'rev_user',			'user_name' => 'rev_user_text',			$realNameField,			'timestamp' => 'MAX(rev_timestamp)',		);

$conds = array( 'rev_page' => $this->getId );

// The user who made the top revision gets credited as "this page was last edited by		// John, based on contributions by Tom, Dick and Harry", so don't include them twice. $user = $this->getUser; if ( $user ) { $conds[] = "rev_user != $user"; } else { $conds[] = "rev_user_text != {$dbr->addQuotes( $this->getUserText )}"; }

$conds[] = "{$dbr->bitAnd( 'rev_deleted', Revision::DELETED_USER )} = 0"; // username hidden?

$jconds = array(			'user' => array( 'LEFT JOIN', 'rev_user = user_id' ),		);

$options = array(			'GROUP BY' => array( 'rev_user', 'rev_user_text' ),			'ORDER BY' => 'timestamp DESC',		);

$res = $dbr->select( $tables, $fields, $conds, __METHOD__, $options, $jconds ); return new UserArrayFromResult( $res ); }

/**	 * Get the last N authors * @param int $num Number of revisions to get * @param int|string $revLatest The latest rev_id, selected from the master (optional) * @return array Array of authors, duplicates not removed */	public function getLastNAuthors( $num, $revLatest = 0 ) { wfProfileIn( __METHOD__ ); // First try the slave // If that doesn't have the latest revision, try the master $continue = 2; $db = wfGetDB( DB_SLAVE );

do { $res = $db->select( array( 'page', 'revision' ),				array( 'rev_id', 'rev_user_text' ),				array( 'page_namespace' => $this->mTitle->getNamespace, 'page_title' => $this->mTitle->getDBkey, 'rev_page = page_id' ), __METHOD__,				array( 'ORDER BY' => 'rev_timestamp DESC', 'LIMIT' => $num )			);

if ( !$res ) { wfProfileOut( __METHOD__ ); return array; }

$row = $db->fetchObject( $res );

if ( $continue == 2 && $revLatest && $row->rev_id != $revLatest ) { $db = wfGetDB( DB_MASTER ); $continue--; } else { $continue = 0; }		} while ( $continue );

$authors = array( $row->rev_user_text );

foreach ( $res as $row ) { $authors[] = $row->rev_user_text; }

wfProfileOut( __METHOD__ ); return $authors; }

/**	 * Should the parser cache be used? *	 * @param ParserOptions $parserOptions ParserOptions to check * @param int $oldid * @return bool */	public function isParserCacheUsed( ParserOptions $parserOptions, $oldid ) { global $wgEnableParserCache;

return $wgEnableParserCache && $parserOptions->getStubThreshold == 0 && $this->exists && ( $oldid === null || $oldid === 0 || $oldid === $this->getLatest ) && $this->getContentHandler->isParserCacheSupported; }

/**	 * Get a ParserOutput for the given ParserOptions and revision ID. * The parser cache will be used if possible. *	 * @since 1.19 * @param ParserOptions $parserOptions ParserOptions to use for the parse operation * @param null|int $oldid Revision ID to get the text from, passing null or 0 will *  get the current revision (default value) *	 * @return ParserOutput|bool ParserOutput or false if the revision was not found */	public function getParserOutput( ParserOptions $parserOptions, $oldid = null ) { wfProfileIn( __METHOD__ );

$useParserCache = $this->isParserCacheUsed( $parserOptions, $oldid ); wfDebug( __METHOD__ . ': using parser cache: ' . ( $useParserCache ? 'yes' : 'no' ) . "\n" ); if ( $parserOptions->getStubThreshold ) { wfIncrStats( 'pcache_miss_stub' ); }

if ( $useParserCache ) { $parserOutput = ParserCache::singleton->get( $this, $parserOptions ); if ( $parserOutput !== false ) { wfProfileOut( __METHOD__ ); return $parserOutput; }		}

if ( $oldid === null || $oldid === 0 ) { $oldid = $this->getLatest; }

$pool = new PoolWorkArticleView( $this, $parserOptions, $oldid, $useParserCache ); $pool->execute;

wfProfileOut( __METHOD__ );

return $pool->getParserOutput; }

/**	 * Do standard deferred updates after page view (existing or missing page) * @param User $user The relevant user * @param int $oldid The revision id being viewed. If not given or 0, latest revision is assumed. */	public function doViewUpdates( User $user, $oldid = 0 ) { global $wgDisableCounters; if ( wfReadOnly ) { return; }

// Don't update page view counters on views from bot users (bug 14044) if ( !$wgDisableCounters && !$user->isAllowed( 'bot' ) && $this->exists ) { DeferredUpdates::addUpdate( new ViewCountUpdate( $this->getId ) ); DeferredUpdates::addUpdate( new SiteStatsUpdate( 1, 0, 0 ) ); }

// Update newtalk / watchlist notification status $user->clearNotification( $this->mTitle, $oldid ); }

/**	 * Perform the actions of a page purging * @return bool */	public function doPurge { global $wgUseSquid;

if ( !wfRunHooks( 'ArticlePurge', array( &$this ) ) ) { return false; }

// Invalidate the cache $this->mTitle->invalidateCache;

if ( $wgUseSquid ) { // Commit the transaction before the purge is sent $dbw = wfGetDB( DB_MASTER ); $dbw->commit( __METHOD__ );

// Send purge $update = SquidUpdate::newSimplePurge( $this->mTitle ); $update->doUpdate; }

if ( $this->mTitle->getNamespace == NS_MEDIAWIKI ) { // @todo move this logic to MessageCache

if ( $this->exists ) { // NOTE: use transclusion text for messages. //      This is consistent with  MessageCache::getMsgFromNamespace

$content = $this->getContent; $text = $content === null ? null : $content->getWikitextForTransclusion;

if ( $text === null ) { $text = false; }			} else { $text = false; }

MessageCache::singleton->replace( $this->mTitle->getDBkey, $text ); }		return true; }

/**	 * Insert a new empty page record for this article. * This *must* be followed up by creating a revision * and running $this->updateRevisionOn( ... ); * or else the record will be left in a funky state. * Best if all done inside a transaction. *	 * @param DatabaseBase $dbw * @return int The newly created page_id key, or false if the title already existed */	public function insertOn( $dbw ) { wfProfileIn( __METHOD__ );

$page_id = $dbw->nextSequenceValue( 'page_page_id_seq' ); $dbw->insert( 'page', array( 'page_id'          => $page_id, 'page_namespace'   => $this->mTitle->getNamespace, 'page_title'       => $this->mTitle->getDBkey, 'page_counter'     => 0, 'page_restrictions' => '', 'page_is_redirect' => 0, // Will set this shortly... 'page_is_new'      => 1, 'page_random'      => wfRandom, 'page_touched'     => $dbw->timestamp, 'page_latest'      => 0, // Fill this in shortly... 'page_len'         => 0, // Fill this in shortly... ), __METHOD__, 'IGNORE' );

$affected = $dbw->affectedRows;

if ( $affected ) { $newid = $dbw->insertId; $this->mId = $newid; $this->mTitle->resetArticleID( $newid ); }		wfProfileOut( __METHOD__ );

return $affected ? $newid : false; }

/**	 * Update the page record to point to a newly saved revision. *	 * @param DatabaseBase $dbw * @param Revision $revision For ID number, and text used to set *  length and redirect status fields * @param int $lastRevision If given, will not overwrite the page field *  when different from the currently set value. *  Giving 0 indicates the new page flag should be set on. * @param bool $lastRevIsRedirect If given, will optimize adding and *  removing rows in redirect table. * @return bool true on success, false on failure */	public function updateRevisionOn( $dbw, $revision, $lastRevision = null,		$lastRevIsRedirect = null	) { global $wgContentHandlerUseDB;

wfProfileIn( __METHOD__ );

$content = $revision->getContent; $len = $content ? $content->getSize : 0; $rt = $content ? $content->getUltimateRedirectTarget : null;

$conditions = array( 'page_id' => $this->getId );

if ( !is_null( $lastRevision ) ) { // An extra check against threads stepping on each other $conditions['page_latest'] = $lastRevision; }

$now = wfTimestampNow; $row = array( /* SET */			'page_latest'     => $revision->getId,			'page_touched'     => $dbw->timestamp( $now ),			'page_is_new'      => ( $lastRevision === 0 ) ? 1 : 0,			'page_is_redirect' => $rt !== null ? 1 : 0,			'page_len'         => $len,		);

if ( $wgContentHandlerUseDB ) { $row['page_content_model'] = $revision->getContentModel; }

$dbw->update( 'page',			$row,			$conditions,			__METHOD__ );

$result = $dbw->affectedRows > 0; if ( $result ) { $this->updateRedirectOn( $dbw, $rt, $lastRevIsRedirect ); $this->setLastEdit( $revision ); $this->setCachedLastEditTime( $now ); $this->mLatest = $revision->getId; $this->mIsRedirect = (bool)$rt; // Update the LinkCache. LinkCache::singleton->addGoodLinkObj( $this->getId, $this->mTitle, $len, $this->mIsRedirect,													$this->mLatest, $revision->getContentModel ); }

wfProfileOut( __METHOD__ ); return $result; }

/**	 * Add row to the redirect table if this is a redirect, remove otherwise. *	 * @param DatabaseBase $dbw * @param Title $redirectTitle Title object pointing to the redirect target, *  or NULL if this is not a redirect * @param null|bool $lastRevIsRedirect If given, will optimize adding and *  removing rows in redirect table. * @return bool true on success, false on failure * @private */	public function updateRedirectOn( $dbw, $redirectTitle, $lastRevIsRedirect = null ) { // Always update redirects (target link might have changed) // Update/Insert if we don't know if the last revision was a redirect or not // Delete if changing from redirect to non-redirect $isRedirect = !is_null( $redirectTitle );

if ( !$isRedirect && $lastRevIsRedirect === false ) { return true; }

wfProfileIn( __METHOD__ ); if ( $isRedirect ) { $this->insertRedirectEntry( $redirectTitle ); } else { // This is not a redirect, remove row from redirect table $where = array( 'rd_from' => $this->getId ); $dbw->delete( 'redirect', $where, __METHOD__ ); }

if ( $this->getTitle->getNamespace == NS_FILE ) { RepoGroup::singleton->getLocalRepo->invalidateImageRedirect( $this->getTitle ); }		wfProfileOut( __METHOD__ );

return ( $dbw->affectedRows != 0 ); }

/**	 * If the given revision is newer than the currently set page_latest, * update the page record. Otherwise, do nothing. *	 * @deprecated since 1.24, use updateRevisionOn instead *	 * @param DatabaseBase $dbw * @param Revision $revision * @return bool */	public function updateIfNewerOn( $dbw, $revision ) { wfProfileIn( __METHOD__ );

$row = $dbw->selectRow(			array( 'revision', 'page' ),			array( 'rev_id', 'rev_timestamp', 'page_is_redirect' ),			array( 'page_id' => $this->getId, 'page_latest=rev_id' ),			__METHOD__ );

if ( $row ) { if ( wfTimestamp( TS_MW, $row->rev_timestamp ) >= $revision->getTimestamp ) { wfProfileOut( __METHOD__ ); return false; }			$prev = $row->rev_id; $lastRevIsRedirect = (bool)$row->page_is_redirect; } else { // No or missing previous revision; mark the page as new $prev = 0; $lastRevIsRedirect = null; }

$ret = $this->updateRevisionOn( $dbw, $revision, $prev, $lastRevIsRedirect );

wfProfileOut( __METHOD__ ); return $ret; }

/**	 * Get the content that needs to be saved in order to undo all revisions * between $undo and $undoafter. Revisions must belong to the same page, * must exist and must not be deleted * @param Revision $undo * @param Revision $undoafter Must be an earlier revision than $undo * @return mixed string on success, false on failure * @since 1.21 * Before we had the Content object, this was done in getUndoText */	public function getUndoContent( Revision $undo, Revision $undoafter = null ) { $handler = $undo->getContentHandler; return $handler->getUndoContent( $this->getRevision, $undo, $undoafter ); }

/**	 * Get the text that needs to be saved in order to undo all revisions * between $undo and $undoafter. Revisions must belong to the same page, * must exist and must not be deleted * @param Revision $undo * @param Revision $undoafter Must be an earlier revision than $undo * @return string|bool string on success, false on failure * @deprecated since 1.21: use ContentHandler::getUndoContent instead. */	public function getUndoText( Revision $undo, Revision $undoafter = null ) { ContentHandler::deprecated( __METHOD__, '1.21' );

$this->loadLastEdit;

if ( $this->mLastRevision ) { if ( is_null( $undoafter ) ) { $undoafter = $undo->getPrevious; }

$handler = $this->getContentHandler; $undone = $handler->getUndoContent( $this->mLastRevision, $undo, $undoafter );

if ( !$undone ) { return false; } else { return ContentHandler::getContentText( $undone ); }		}

return false; }

/**	 * @param string|number|null|bool $sectionId Section identifier as a number or string * (e.g. 0, 1 or 'T-1'), null/false or an empty string for the whole page * or 'new' for a new section. * @param string $text New text of the section. * @param string $sectionTitle New section's subject, only if $section is "new". * @param string $edittime Revision timestamp or null to use the current revision. *	 * @throws MWException * @return string New complete article text, or null if error. *	 * @deprecated since 1.21, use replaceSectionAtRev instead */	public function replaceSection( $sectionId, $text, $sectionTitle = '',		$edittime = null	) { ContentHandler::deprecated( __METHOD__, '1.21' );

//NOTE: keep condition in sync with condition in replaceSectionContent! if ( strval( $sectionId ) === '' ) { // Whole-page edit; let the whole text through return $text; }

if ( !$this->supportsSections ) { throw new MWException( "sections not supported for content model " .				$this->getContentHandler->getModelID ); }

// could even make section title, but that's not required. $sectionContent = ContentHandler::makeContent( $text, $this->getTitle );

$newContent = $this->replaceSectionContent( $sectionId, $sectionContent, $sectionTitle,			$edittime );

return ContentHandler::getContentText( $newContent ); }

/**	 * Returns true if this page's content model supports sections. *	 * @return bool *	 * @todo The skin should check this and not offer section functionality if *  sections are not supported. * @todo The EditPage should check this and not offer section functionality *  if sections are not supported. */	public function supportsSections { return $this->getContentHandler->supportsSections; }

/**	 * @param string|number|null|bool $sectionId Section identifier as a number or string * (e.g. 0, 1 or 'T-1'), null/false or an empty string for the whole page * or 'new' for a new section. * @param Content $sectionContent New content of the section. * @param string $sectionTitle New section's subject, only if $section is "new". * @param string $edittime Revision timestamp or null to use the current revision. *	 * @throws MWException * @return Content New complete article content, or null if error. *	 * @since 1.21 * @deprecated since 1.24, use replaceSectionAtRev instead */	public function replaceSectionContent( $sectionId, Content $sectionContent, $sectionTitle = '',		$edittime = null ) { wfProfileIn( __METHOD__ );

$baseRevId = null; if ( $edittime && $sectionId !== 'new' ) { $dbw = wfGetDB( DB_MASTER ); $rev = Revision::loadFromTimestamp( $dbw, $this->mTitle, $edittime ); if ( $rev ) { $baseRevId = $rev->getId; }		}

wfProfileOut( __METHOD__ ); return $this->replaceSectionAtRev( $sectionId, $sectionContent, $sectionTitle, $baseRevId ); }

/**	 * @param string|number|null|bool $sectionId Section identifier as a number or string * (e.g. 0, 1 or 'T-1'), null/false or an empty string for the whole page * or 'new' for a new section. * @param Content $sectionContent New content of the section. * @param string $sectionTitle New section's subject, only if $section is "new". * @param string $baseRevId integer|null *	 * @throws MWException * @return Content New complete article content, or null if error. *	 * @since 1.24 */	public function replaceSectionAtRev( $sectionId, Content $sectionContent,		$sectionTitle = '', $baseRevId = null	) { wfProfileIn( __METHOD__ );

if ( strval( $sectionId ) === '' ) { // Whole-page edit; let the whole text through $newContent = $sectionContent; } else { if ( !$this->supportsSections ) { wfProfileOut( __METHOD__ ); throw new MWException( "sections not supported for content model " .					$this->getContentHandler->getModelID ); }

// Bug 30711: always use current version when adding a new section if ( is_null( $baseRevId ) || $sectionId === 'new' ) { $oldContent = $this->getContent; } else { // TODO: try DB_SLAVE first $dbw = wfGetDB( DB_MASTER ); $rev = Revision::loadFromId( $dbw, $baseRevId );

if ( !$rev ) { wfDebug( __METHOD__ . " asked for bogus section (page: ". $this->getId. "; section: $sectionId)\n" ); wfProfileOut( __METHOD__ ); return null; }

$oldContent = $rev->getContent; }

if ( ! $oldContent ) { wfDebug( __METHOD__ . ": no page text\n" ); wfProfileOut( __METHOD__ ); return null; }

$newContent = $oldContent->replaceSection( $sectionId, $sectionContent, $sectionTitle ); }

wfProfileOut( __METHOD__ ); return $newContent; }

/**	 * Check flags and add EDIT_NEW or EDIT_UPDATE to them as needed. * @param int $flags * @return int Updated $flags */	public function checkFlags( $flags ) { if ( !( $flags & EDIT_NEW ) && !( $flags & EDIT_UPDATE ) ) { if ( $this->exists ) { $flags |= EDIT_UPDATE; } else { $flags |= EDIT_NEW; }		}

return $flags; }

/**	 * Change an existing article or create a new article. Updates RC and all necessary caches, * optionally via the deferred update array. *	 * @param string $text New text * @param string $summary Edit summary * @param int $flags Bitfield: *     EDIT_NEW *         Article is known or assumed to be non-existent, create a new one *     EDIT_UPDATE *         Article is known or assumed to be pre-existing, update it	 *      EDIT_MINOR *         Mark this edit minor, if the user is allowed to do so	 *      EDIT_SUPPRESS_RC *         Do not log the change in recentchanges *     EDIT_FORCE_BOT *         Mark the edit a "bot" edit regardless of user rights *     EDIT_DEFER_UPDATES *         Defer some of the updates until the end of index.php *     EDIT_AUTOSUMMARY *         Fill in blank summaries with generated text where possible *	 * If neither EDIT_NEW nor EDIT_UPDATE is specified, the status of the * article will be detected. If EDIT_UPDATE is specified and the article * doesn't exist, the function will return an edit-gone-missing error. If	 * EDIT_NEW is specified and the article does exist, an edit-already-exists * error will be returned. These two conditions are also possible with * auto-detection due to MediaWiki's performance-optimised locking strategy. *	 * @param bool|int $baseRevId The revision ID this edit was based off, if any * @param User $user The user doing the edit *	 * @throws MWException * @return Status object. Possible errors: *  edit-hook-aborted: The ArticleSave hook aborted the edit but didn't	 *     set the fatal flag of $status *  edit-gone-missing: In update mode, but the article didn't exist. *  edit-conflict: In update mode, the article changed unexpectedly. *  edit-no-change: Warning that the text was the same as before. *  edit-already-exists: In creation mode, but the article already exists. *	 * Extensions may define additional errors. *	 * $return->value will contain an associative array with members as follows: *    new: Boolean indicating if the function attempted to create a new article. *    revision: The revision object for the inserted revision, or null. *	 * Compatibility note: this function previously returned a boolean value * indicating success/failure *	 * @deprecated since 1.21: use doEditContent instead. */	public function doEdit( $text, $summary, $flags = 0, $baseRevId = false, $user = null ) { ContentHandler::deprecated( __METHOD__, '1.21' );

$content = ContentHandler::makeContent( $text, $this->getTitle );

return $this->doEditContent( $content, $summary, $flags, $baseRevId, $user ); }

/**	 * Change an existing article or create a new article. Updates RC and all necessary caches, * optionally via the deferred update array. *	 * @param Content $content New content * @param string $summary Edit summary * @param int $flags Bitfield: *     EDIT_NEW *         Article is known or assumed to be non-existent, create a new one *     EDIT_UPDATE *         Article is known or assumed to be pre-existing, update it	 *      EDIT_MINOR *         Mark this edit minor, if the user is allowed to do so	 *      EDIT_SUPPRESS_RC *         Do not log the change in recentchanges *     EDIT_FORCE_BOT *         Mark the edit a "bot" edit regardless of user rights *     EDIT_DEFER_UPDATES *         Defer some of the updates until the end of index.php *     EDIT_AUTOSUMMARY *         Fill in blank summaries with generated text where possible *	 * If neither EDIT_NEW nor EDIT_UPDATE is specified, the status of the * article will be detected. If EDIT_UPDATE is specified and the article * doesn't exist, the function will return an edit-gone-missing error. If	 * EDIT_NEW is specified and the article does exist, an edit-already-exists * error will be returned. These two conditions are also possible with * auto-detection due to MediaWiki's performance-optimised locking strategy. *	 * @param bool|int $baseRevId The revision ID this edit was based off, if any * @param User $user The user doing the edit * @param string $serialisation_format Format for storing the content in the *  database. *	 * @throws MWException * @return Status object. Possible errors: *    edit-hook-aborted: The ArticleSave hook aborted the edit but didn't	 *       set the fatal flag of $status. *    edit-gone-missing: In update mode, but the article didn't exist. *    edit-conflict: In update mode, the article changed unexpectedly. *    edit-no-change: Warning that the text was the same as before. *    edit-already-exists: In creation mode, but the article already exists. *	 * Extensions may define additional errors. *	 * $return->value will contain an associative array with members as follows: *    new: Boolean indicating if the function attempted to create a new article. *    revision: The revision object for the inserted revision, or null. *	 * @since 1.21 */	public function doEditContent( Content $content, $summary, $flags = 0, $baseRevId = false,		User $user = null, $serialisation_format = null	) { global $wgUser, $wgUseAutomaticEditSummaries, $wgUseRCPatrol, $wgUseNPPatrol;

// Low-level sanity check if ( $this->mTitle->getText === '' ) { throw new MWException( 'Something is trying to edit an article with an empty title' ); }

wfProfileIn( __METHOD__ );

if ( !$content->getContentHandler->canBeUsedOn( $this->getTitle ) ) { wfProfileOut( __METHOD__ ); return Status::newFatal( 'content-not-allowed-here',				ContentHandler::getLocalizedName( $content->getModel ),				$this->getTitle->getPrefixedText ); }

$user = is_null( $user ) ? $wgUser : $user; $status = Status::newGood( array );

// Load the data from the master database if needed. // The caller may already loaded it from the master or even loaded it using // SELECT FOR UPDATE, so do not override that using clear. $this->loadPageData( 'fromdbmaster' );

$flags = $this->checkFlags( $flags );

// handle hook $hook_args = array( &$this, &$user, &$content, &$summary,							$flags & EDIT_MINOR, null, null, &$flags, &$status );

if ( !wfRunHooks( 'PageContentSave', $hook_args )			|| !ContentHandler::runLegacyHooks( 'ArticleSave', $hook_args ) ) {

wfDebug( __METHOD__ . ": ArticleSave or ArticleSaveContent hook aborted save!\n" );

if ( $status->isOK ) { $status->fatal( 'edit-hook-aborted' ); }

wfProfileOut( __METHOD__ ); return $status; }

// Silently ignore EDIT_MINOR if not allowed $isminor = ( $flags & EDIT_MINOR ) && $user->isAllowed( 'minoredit' ); $bot = $flags & EDIT_FORCE_BOT;

$old_content = $this->getContent( Revision::RAW ); // current revision's content

$oldsize = $old_content ? $old_content->getSize : 0; $oldid = $this->getLatest; $oldIsRedirect = $this->isRedirect; $oldcountable = $this->isCountable;

$handler = $content->getContentHandler;

// Provide autosummaries if one is not provided and autosummaries are enabled. if ( $wgUseAutomaticEditSummaries && $flags & EDIT_AUTOSUMMARY && $summary == '' ) { if ( !$old_content ) { $old_content = null; }			$summary = $handler->getAutosummary( $old_content, $content, $flags ); }

$editInfo = $this->prepareContentForEdit( $content, null, $user, $serialisation_format ); $serialized = $editInfo->pst;

/**		 * @var Content $content */		$content = $editInfo->pstContent; $newsize = $content->getSize;

$dbw = wfGetDB( DB_MASTER ); $now = wfTimestampNow; $this->mTimestamp = $now;

if ( $flags & EDIT_UPDATE ) { // Update article, but only if changed. $status->value['new'] = false;

if ( !$oldid ) { // Article gone missing wfDebug( __METHOD__ . ": EDIT_UPDATE specified but article doesn't exist\n" ); $status->fatal( 'edit-gone-missing' );

wfProfileOut( __METHOD__ ); return $status; } elseif ( !$old_content ) { // Sanity check for bug 37225 wfProfileOut( __METHOD__ ); throw new MWException( "Could not find text for current revision {$oldid}." ); }

$revision = new Revision( array( 'page'      => $this->getId, 'title'     => $this->getTitle, // for determining the default content model 'comment'   => $summary, 'minor_edit' => $isminor, 'text'      => $serialized, 'len'       => $newsize, 'parent_id' => $oldid, 'user'      => $user->getId, 'user_text' => $user->getName, 'timestamp' => $now, 'content_model' => $content->getModel, 'content_format' => $serialisation_format, ) ); // XXX: pass content object?!

$changed = !$content->equals( $old_content );

if ( $changed ) { if ( !$content->isValid ) { wfProfileOut( __METHOD__ ); throw new MWException( "New content failed validity check!" ); }

$dbw->begin( __METHOD__ ); try {

$prepStatus = $content->prepareSave( $this, $flags, $baseRevId, $user ); $status->merge( $prepStatus );

if ( !$status->isOK ) { $dbw->rollback( __METHOD__ );

wfProfileOut( __METHOD__ ); return $status; }					$revisionId = $revision->insertOn( $dbw );

// Update page //					// We check for conflicts by comparing $oldid with the current latest revision ID. $ok = $this->updateRevisionOn( $dbw, $revision, $oldid, $oldIsRedirect );

if ( !$ok ) { // Belated edit conflict! Run away!! $status->fatal( 'edit-conflict' );

$dbw->rollback( __METHOD__ );

wfProfileOut( __METHOD__ ); return $status; }

wfRunHooks( 'NewRevisionFromEditComplete', array( $this, $revision, $baseRevId, $user ) ); // Update recentchanges if ( !( $flags & EDIT_SUPPRESS_RC ) ) { // Mark as patrolled if the user can do so						$patrolled = $wgUseRCPatrol && !count(						$this->mTitle->getUserPermissionsErrors( 'autopatrol', $user ) ); // Add RC row to the DB						$rc = RecentChange::notifyEdit( $now, $this->mTitle, $isminor, $user, $summary,							$oldid, $this->getTimestamp, $bot, '', $oldsize, $newsize,							$revisionId, $patrolled						);

// Log auto-patrolled edits if ( $patrolled ) { PatrolLog::record( $rc, true, $user ); }					}					$user->incEditCount; } catch ( MWException $e ) { $dbw->rollback( __METHOD__ ); // Question: Would it perhaps be better if this method turned all // exceptions into $status's?					throw $e; }				$dbw->commit( __METHOD__ ); } else { // Bug 32948: revision ID must be set to page and // related variables correctly $revision->setId( $this->getLatest ); }

// Update links tables, site stats, etc.			$this->doEditUpdates(				$revision,				$user,				array( 'changed' => $changed, 'oldcountable' => $oldcountable )			);

if ( !$changed ) { $status->warning( 'edit-no-change' ); $revision = null; // Update page_touched, this is usually implicit in the page update // Other cache updates are done in onArticleEdit $this->mTitle->invalidateCache; }		} else { // Create new article $status->value['new'] = true;

$dbw->begin( __METHOD__ ); try {

$prepStatus = $content->prepareSave( $this, $flags, $baseRevId, $user ); $status->merge( $prepStatus );

if ( !$status->isOK ) { $dbw->rollback( __METHOD__ );

wfProfileOut( __METHOD__ ); return $status; }

$status->merge( $prepStatus );

// Add the page record; stake our claim on this title! // This will return false if the article already exists $newid = $this->insertOn( $dbw );

if ( $newid === false ) { $dbw->rollback( __METHOD__ ); $status->fatal( 'edit-already-exists' );

wfProfileOut( __METHOD__ ); return $status; }

// Save the revision text... $revision = new Revision( array( 'page'      => $newid, 'title'     => $this->getTitle, // for determining the default content model 'comment'   => $summary, 'minor_edit' => $isminor, 'text'      => $serialized, 'len'       => $newsize, 'user'      => $user->getId, 'user_text' => $user->getName, 'timestamp' => $now, 'content_model' => $content->getModel, 'content_format' => $serialisation_format, ) );				$revisionId = $revision->insertOn( $dbw );

// Bug 37225: use accessor to get the text as Revision may trim it				$content = $revision->getContent; // sanity; get normalized version

if ( $content ) { $newsize = $content->getSize; }

// Update the page record with revision data $this->updateRevisionOn( $dbw, $revision, 0 );

wfRunHooks( 'NewRevisionFromEditComplete', array( $this, $revision, false, $user ) );

// Update recentchanges if ( !( $flags & EDIT_SUPPRESS_RC ) ) { // Mark as patrolled if the user can do so					$patrolled = ( $wgUseRCPatrol || $wgUseNPPatrol ) && !count(						$this->mTitle->getUserPermissionsErrors( 'autopatrol', $user ) ); // Add RC row to the DB					$rc = RecentChange::notifyNew( $now, $this->mTitle, $isminor, $user, $summary, $bot,						'', $newsize, $revisionId, $patrolled );

// Log auto-patrolled edits if ( $patrolled ) { PatrolLog::record( $rc, true, $user ); }				}				$user->incEditCount;

} catch ( MWException $e ) { $dbw->rollback( __METHOD__ ); throw $e; }			$dbw->commit( __METHOD__ );

// Update links, etc.			$this->doEditUpdates( $revision, $user, array( 'created' => true ) );

$hook_args = array( &$this, &$user, $content, $summary,								$flags & EDIT_MINOR, null, null, &$flags, $revision );

ContentHandler::runLegacyHooks( 'ArticleInsertComplete', $hook_args ); wfRunHooks( 'PageContentInsertComplete', $hook_args ); }

// Do updates right now unless deferral was requested if ( !( $flags & EDIT_DEFER_UPDATES ) ) { DeferredUpdates::doUpdates; }

// Return the new revision (or null) to the caller $status->value['revision'] = $revision;

$hook_args = array( &$this, &$user, $content, $summary,							$flags & EDIT_MINOR, null, null, &$flags, $revision, &$status, $baseRevId );

ContentHandler::runLegacyHooks( 'ArticleSaveComplete', $hook_args ); wfRunHooks( 'PageContentSaveComplete', $hook_args );

// Promote user to any groups they meet the criteria for $dbw->onTransactionIdle( function use ( $user ) {			$user->addAutopromoteOnceGroups( 'onEdit' );		} );

wfProfileOut( __METHOD__ ); return $status; }

/**	 * Get parser options suitable for rendering the primary article wikitext *	 * @see ContentHandler::makeParserOptions *	 * @param IContextSource|User|string $context One of the following: *       - IContextSource: Use the User and the Language of the provided *         context *       - User: Use the provided User object and $wgLang for the language, *         so use an IContextSource object if possible. *       - 'canonical': Canonical options (anonymous user with default	 *          preferences and content language). * @return ParserOptions */	public function makeParserOptions( $context ) { $options = $this->getContentHandler->makeParserOptions( $context );

if ( $this->getTitle->isConversionTable ) { // @todo ConversionTable should become a separate content model, so // we don't need special cases like this one. $options->disableContentConversion; }

return $options; }

/**	 * Prepare text which is about to be saved. * Returns a stdclass with source, pst and output members *	 * @deprecated since 1.21: use prepareContentForEdit instead. * @return object */	public function prepareTextForEdit( $text, $revid = null, User $user = null ) { ContentHandler::deprecated( __METHOD__, '1.21' ); $content = ContentHandler::makeContent( $text, $this->getTitle ); return $this->prepareContentForEdit( $content, $revid, $user ); }

/**	 * Prepare content which is about to be saved. * Returns a stdclass with source, pst and output members *	 * @param Content $content * @param int|null $revid * @param User|null $user * @param string|null $serialization_format *	 * @return bool|object *	 * @since 1.21 */	public function prepareContentForEdit( Content $content, $revid = null, User $user = null,		$serialization_format = null	) { global $wgContLang, $wgUser; $user = is_null( $user ) ? $wgUser : $user; //XXX: check $user->getId here???

// Use a sane default for $serialization_format, see bug 57026 if ( $serialization_format === null ) { $serialization_format = $content->getContentHandler->getDefaultFormat; }

if ( $this->mPreparedEdit			&& $this->mPreparedEdit->newContent			&& $this->mPreparedEdit->newContent->equals( $content )			&& $this->mPreparedEdit->revid == $revid			&& $this->mPreparedEdit->format == $serialization_format			// XXX: also check $user here?		) { // Already prepared return $this->mPreparedEdit; }

$popts = ParserOptions::newFromUserAndLang( $user, $wgContLang ); wfRunHooks( 'ArticlePrepareTextForEdit', array( $this, $popts ) );

$edit = (object)array; $edit->revid = $revid; $edit->timestamp = wfTimestampNow;

$edit->pstContent = $content ? $content->preSaveTransform( $this->mTitle, $user, $popts ) : null;

$edit->format = $serialization_format; $edit->popts = $this->makeParserOptions( 'canonical' ); $edit->output = $edit->pstContent ? $edit->pstContent->getParserOutput( $this->mTitle, $revid, $edit->popts ) : null;

$edit->newContent = $content; $edit->oldContent = $this->getContent( Revision::RAW );

// NOTE: B/C for hooks! don't use these fields! $edit->newText = $edit->newContent ? ContentHandler::getContentText( $edit->newContent ) : ''; $edit->oldText = $edit->oldContent ? ContentHandler::getContentText( $edit->oldContent ) : ''; $edit->pst = $edit->pstContent ? $edit->pstContent->serialize( $serialization_format ) : '';

$this->mPreparedEdit = $edit; return $edit; }

/**	 * Do standard deferred updates after page edit. * Update links tables, site stats, search index and message cache. * Purges pages that include this page if the text was changed here. * Every 100th edit, prune the recent changes table. *	 * @param Revision $revision * @param User $user User object that did the revision * @param array $options Array of options, following indexes are used: * - changed: boolean, whether the revision changed the content (default true) * - created: boolean, whether the revision created the page (default false) * - oldcountable: boolean or null (default null): *  - boolean: whether the page was counted as an article before that *    revision, only used in changed is true and created is false *  - null: don't change the article count */	public function doEditUpdates( Revision $revision, User $user, array $options = array ) { global $wgEnableParserCache;

wfProfileIn( __METHOD__ );

$options += array( 'changed' => true, 'created' => false, 'oldcountable' => null ); $content = $revision->getContent;

// Parse the text // Be careful not to do pre-save transform twice: $text is usually // already pre-save transformed once. if ( !$this->mPreparedEdit || $this->mPreparedEdit->output->getFlag( 'vary-revision' ) ) { wfDebug( __METHOD__ . ": No prepared edit or vary-revision is set...\n" ); $editInfo = $this->prepareContentForEdit( $content, $revision->getId, $user ); } else { wfDebug( __METHOD__ . ": No vary-revision, using prepared edit...\n" ); $editInfo = $this->mPreparedEdit; }

// Save it to the parser cache if ( $wgEnableParserCache ) { $parserCache = ParserCache::singleton; $parserCache->save(				$editInfo->output, $this, $editInfo->popts, $editInfo->timestamp, $editInfo->revid			); }

// Update the links tables and other secondary data if ( $content ) { $recursive = $options['changed']; // bug 50785 $updates = $content->getSecondaryDataUpdates(				$this->getTitle, null, $recursive, $editInfo->output ); DataUpdate::runUpdates( $updates ); }

wfRunHooks( 'ArticleEditUpdates', array( &$this, &$editInfo, $options['changed'] ) );

if ( wfRunHooks( 'ArticleEditUpdatesDeleteFromRecentchanges', array( &$this ) ) ) { if ( 0 == mt_rand( 0, 99 ) ) { // Flush old entries from the `recentchanges` table; we do this on				// random requests so as to avoid an increase in writes for no good reason RecentChange::purgeExpiredChanges; }		}

if ( !$this->exists ) { wfProfileOut( __METHOD__ ); return; }

$id = $this->getId; $title = $this->mTitle->getPrefixedDBkey; $shortTitle = $this->mTitle->getDBkey;

if ( !$options['changed'] ) { $good = 0; } elseif ( $options['created'] ) { $good = (int)$this->isCountable( $editInfo ); } elseif ( $options['oldcountable'] !== null ) { $good = (int)$this->isCountable( $editInfo ) - (int)$options['oldcountable']; } else { $good = 0; }		$edits = $options['changed'] ? 1 : 0;		$total = $options['created'] ? 1 : 0;

DeferredUpdates::addUpdate( new SiteStatsUpdate( 0, $edits, $good, $total ) ); DeferredUpdates::addUpdate( new SearchUpdate( $id, $title, $content ) );

// If this is another user's talk page, update newtalk. // Don't do this if $options['changed'] = false (null-edits) nor if // it's a minor edit and the user doesn't want notifications for those. if ( $options['changed']			&& $this->mTitle->getNamespace == NS_USER_TALK			&& $shortTitle != $user->getTitleKey			&& !( $revision->isMinor && $user->isAllowed( 'nominornewtalk' ) )		) { $recipient = User::newFromName( $shortTitle, false ); if ( !$recipient ) { wfDebug( __METHOD__ . ": invalid username\n" ); } else { // Allow extensions to prevent user notification when a new message is added to their talk page if ( wfRunHooks( 'ArticleEditUpdateNewTalk', array( &$this, $recipient ) ) ) { if ( User::isIP( $shortTitle ) ) { // An anonymous user $recipient->setNewtalk( true, $revision ); } elseif ( $recipient->isLoggedIn ) { $recipient->setNewtalk( true, $revision ); } else { wfDebug( __METHOD__ . ": don't need to notify a nonexistent user\n" ); }				}			}		}

if ( $this->mTitle->getNamespace == NS_MEDIAWIKI ) { // XXX: could skip pseudo-messages like js/css here, based on content model. $msgtext = $content ? $content->getWikitextForTransclusion : null; if ( $msgtext === false || $msgtext === null ) { $msgtext = ''; }

MessageCache::singleton->replace( $shortTitle, $msgtext ); }

if ( $options['created'] ) { self::onArticleCreate( $this->mTitle ); } elseif ( $options['changed'] ) { // bug 50785 self::onArticleEdit( $this->mTitle ); }

wfProfileOut( __METHOD__ ); }

/**	 * Edit an article without doing all that other stuff * The article must already exist; link tables etc * are not updated, caches are not flushed. *	 * @param string $text Text submitted * @param User $user The relevant user * @param string $comment Comment submitted * @param bool $minor Whereas it's a minor modification *	 * @deprecated since 1.21, use doEditContent instead. */	public function doQuickEdit( $text, User $user, $comment = '', $minor = 0 ) { ContentHandler::deprecated( __METHOD__, "1.21" );

$content = ContentHandler::makeContent( $text, $this->getTitle ); $this->doQuickEditContent( $content, $user, $comment, $minor ); }

/**	 * Edit an article without doing all that other stuff * The article must already exist; link tables etc * are not updated, caches are not flushed. *	 * @param Content $content Content submitted * @param User $user The relevant user * @param string $comment comment submitted * @param string $serialisation_format Format for storing the content in the database * @param bool $minor Whereas it's a minor modification */	public function doQuickEditContent( Content $content, User $user, $comment = '', $minor = false,		$serialisation_format = null	) { wfProfileIn( __METHOD__ );

$serialized = $content->serialize( $serialisation_format );

$dbw = wfGetDB( DB_MASTER ); $revision = new Revision( array( 'title'     => $this->getTitle, // for determining the default content model 'page'      => $this->getId, 'user_text' => $user->getName, 'user'      => $user->getId, 'text'      => $serialized, 'length'    => $content->getSize, 'comment'   => $comment, 'minor_edit' => $minor ? 1 : 0,		) ); // XXX: set the content object? $revision->insertOn( $dbw ); $this->updateRevisionOn( $dbw, $revision );

wfRunHooks( 'NewRevisionFromEditComplete', array( $this, $revision, false, $user ) );

wfProfileOut( __METHOD__ ); }

/**	 * Update the article's restriction field, and leave a log entry. * This works for protection both existing and non-existing pages. *	 * @param array $limit Set of restriction keys * @param array $expiry Per restriction type expiration * @param int &$cascade Set to false if cascading protection isn't allowed. * @param string $reason * @param User $user The user updating the restrictions * @return Status */	public function doUpdateRestrictions( array $limit, array $expiry,		&$cascade, $reason, User $user	) { global $wgCascadingRestrictionLevels, $wgContLang;

if ( wfReadOnly ) { return Status::newFatal( 'readonlytext', wfReadOnlyReason ); }

$this->loadPageData( 'fromdbmaster' ); $restrictionTypes = $this->mTitle->getRestrictionTypes; $id = $this->getId;

if ( !$cascade ) { $cascade = false; }

// Take this opportunity to purge out expired restrictions Title::purgeExpiredRestrictions;

// @todo FIXME: Same limitations as described in ProtectionForm.php (line 37); // we expect a single selection, but the schema allows otherwise. $isProtected = false; $protect = false; $changed = false;

$dbw = wfGetDB( DB_MASTER );

foreach ( $restrictionTypes as $action ) { if ( !isset( $expiry[$action] ) ) { $expiry[$action] = $dbw->getInfinity; }			if ( !isset( $limit[$action] ) ) { $limit[$action] = ''; } elseif ( $limit[$action] != '' ) { $protect = true; }

// Get current restrictions on $action $current = implode( '', $this->mTitle->getRestrictions( $action ) ); if ( $current != '' ) { $isProtected = true; }

if ( $limit[$action] != $current ) { $changed = true; } elseif ( $limit[$action] != '' ) { // Only check expiry change if the action is actually being // protected, since expiry does nothing on an not-protected // action. if ( $this->mTitle->getRestrictionExpiry( $action ) != $expiry[$action] ) { $changed = true; }			}		}

if ( !$changed && $protect && $this->mTitle->areRestrictionsCascading != $cascade ) { $changed = true; }

// If nothing has changed, do nothing if ( !$changed ) { return Status::newGood; }

if ( !$protect ) { // No protection at all means unprotection $revCommentMsg = 'unprotectedarticle'; $logAction = 'unprotect'; } elseif ( $isProtected ) { $revCommentMsg = 'modifiedarticleprotection'; $logAction = 'modify'; } else { $revCommentMsg = 'protectedarticle'; $logAction = 'protect'; }

// Truncate for whole multibyte characters $reason = $wgContLang->truncate( $reason, 255 );

$logRelationsValues = array; $logRelationsField = null;

if ( $id ) { // Protection of existing page if ( !wfRunHooks( 'ArticleProtect', array( &$this, &$user, $limit, $reason ) ) ) { return Status::newGood; }

// Only certain restrictions can cascade... $editrestriction = isset( $limit['edit'] ) ? array( $limit['edit'] ) : $this->mTitle->getRestrictions( 'edit' ); foreach ( array_keys( $editrestriction, 'sysop' ) as $key ) { $editrestriction[$key] = 'editprotected'; // backwards compatibility }			foreach ( array_keys( $editrestriction, 'autoconfirmed' ) as $key ) { $editrestriction[$key] = 'editsemiprotected'; // backwards compatibility }

$cascadingRestrictionLevels = $wgCascadingRestrictionLevels; foreach ( array_keys( $cascadingRestrictionLevels, 'sysop' ) as $key ) { $cascadingRestrictionLevels[$key] = 'editprotected'; // backwards compatibility }			foreach ( array_keys( $cascadingRestrictionLevels, 'autoconfirmed' ) as $key ) { $cascadingRestrictionLevels[$key] = 'editsemiprotected'; // backwards compatibility }

// The schema allows multiple restrictions if ( !array_intersect( $editrestriction, $cascadingRestrictionLevels ) ) { $cascade = false; }

// insert null revision to identify the page protection change as edit summary $latest = $this->getLatest; $nullRevision = $this->insertProtectNullRevision(				$revCommentMsg,				$limit,				$expiry,				$cascade,				$reason,				$user			);

if ( $nullRevision === null ) { return Status::newFatal( 'no-null-revision', $this->mTitle->getPrefixedText ); }

$logRelationsField = 'pr_id';

// Update restrictions table foreach ( $limit as $action => $restrictions ) { $dbw->delete(					'page_restrictions',					array( 'pr_page' => $id, 'pr_type' => $action ),					__METHOD__				); if ( $restrictions != '' ) { $dbw->insert(						'page_restrictions',						array( 'pr_id' => $dbw->nextSequenceValue( 'page_restrictions_pr_id_seq' ), 'pr_page' => $id, 'pr_type' => $action, 'pr_level' => $restrictions, 'pr_cascade' => ( $cascade && $action == 'edit' ) ? 1 : 0,							'pr_expiry' => $dbw->encodeExpiry( $expiry[$action] ) ),						__METHOD__					); $logRelationsValues[] = $dbw->insertId; }			}

// Clear out legacy restriction fields $dbw->update(				'page',				array( 'page_restrictions' => '' ),				array( 'page_id' => $id ),				__METHOD__			);

wfRunHooks( 'NewRevisionFromEditComplete', array( $this, $nullRevision, $latest, $user ) ); wfRunHooks( 'ArticleProtectComplete', array( &$this, &$user, $limit, $reason ) ); } else { // Protection of non-existing page (also known as "title protection") // Cascade protection is meaningless in this case $cascade = false;

if ( $limit['create'] != '' ) { $dbw->replace( 'protected_titles',					array( array( 'pt_namespace', 'pt_title' ) ),					array( 'pt_namespace' => $this->mTitle->getNamespace, 'pt_title' => $this->mTitle->getDBkey, 'pt_create_perm' => $limit['create'], 'pt_timestamp' => $dbw->timestamp, 'pt_expiry' => $dbw->encodeExpiry( $expiry['create'] ), 'pt_user' => $user->getId, 'pt_reason' => $reason, ), __METHOD__				); } else { $dbw->delete( 'protected_titles',					array( 'pt_namespace' => $this->mTitle->getNamespace, 'pt_title' => $this->mTitle->getDBkey ), __METHOD__				); }		}

$this->mTitle->flushRestrictions; InfoAction::invalidateCache( $this->mTitle );

if ( $logAction == 'unprotect' ) { $params = array; } else { $protectDescriptionLog = $this->protectDescriptionLog( $limit, $expiry ); $params = array( $protectDescriptionLog, $cascade ? 'cascade' : '' ); }

// Update the protection log $log = new LogPage( 'protect' ); $logId = $log->addEntry( $logAction, $this->mTitle, $reason, $params, $user ); if ( $logRelationsField !== null && count( $logRelationsValues ) ) { $log->addRelations( $logRelationsField, $logRelationsValues, $logId ); }

return Status::newGood; }

/**	 * Insert a new null revision for this page. *	 * @param string $revCommentMsg Comment message key for the revision * @param array $limit Set of restriction keys * @param array $expiry Per restriction type expiration * @param int $cascade Set to false if cascading protection isn't allowed. * @param string $reason * @param User|null $user * @return Revision|null Null on error */	public function insertProtectNullRevision( $revCommentMsg, array $limit,		array $expiry, $cascade, $reason, $user = null	) { global $wgContLang; $dbw = wfGetDB( DB_MASTER );

// Prepare a null revision to be added to the history $editComment = $wgContLang->ucfirst(			wfMessage( $revCommentMsg, $this->mTitle->getPrefixedText )->inContentLanguage->text		); if ( $reason ) { $editComment .= wfMessage( 'colon-separator' )->inContentLanguage->text. $reason; }		$protectDescription = $this->protectDescription( $limit, $expiry ); if ( $protectDescription ) { $editComment .= wfMessage( 'word-separator' )->inContentLanguage->text; $editComment .= wfMessage( 'parentheses' )->params( $protectDescription ) ->inContentLanguage->text; }		if ( $cascade ) { $editComment .= wfMessage( 'word-separator' )->inContentLanguage->text; $editComment .= wfMessage( 'brackets' )->params(				wfMessage( 'protect-summary-cascade' )->inContentLanguage->text			)->inContentLanguage->text; }

$nullRev = Revision::newNullRevision( $dbw, $this->getId, $editComment, true, $user ); if ( $nullRev ) { $nullRev->insertOn( $dbw );

// Update page record and touch page $oldLatest = $nullRev->getParentId; $this->updateRevisionOn( $dbw, $nullRev, $oldLatest ); }

return $nullRev; }

/**	 * @param string $expiry 14-char timestamp or "infinity", or false if the input was invalid * @return string */	protected function formatExpiry( $expiry ) { global $wgContLang; $dbr = wfGetDB( DB_SLAVE );

$encodedExpiry = $dbr->encodeExpiry( $expiry ); if ( $encodedExpiry != 'infinity' ) { return wfMessage(				'protect-expiring',				$wgContLang->timeanddate( $expiry, false, false ),				$wgContLang->date( $expiry, false, false ),				$wgContLang->time( $expiry, false, false )			)->inContentLanguage->text; } else { return wfMessage( 'protect-expiry-indefinite' ) ->inContentLanguage->text; }	}

/**	 * Builds the description to serve as comment for the edit. *	 * @param array $limit Set of restriction keys * @param array $expiry Per restriction type expiration * @return string */	public function protectDescription( array $limit, array $expiry ) { $protectDescription = '';

foreach ( array_filter( $limit ) as $action => $restrictions ) { # $action is one of $wgRestrictionTypes = array( 'create', 'edit', 'move', 'upload' ). # All possible message keys are listed here for easier grepping: # * restriction-create # * restriction-edit # * restriction-move # * restriction-upload $actionText = wfMessage( 'restriction-' . $action )->inContentLanguage->text; # $restrictions is one of $wgRestrictionLevels = array( '', 'autoconfirmed', 'sysop' ), # with '' filtered out. All possible message keys are listed below: # * protect-level-autoconfirmed # * protect-level-sysop $restrictionsText = wfMessage( 'protect-level-' . $restrictions )->inContentLanguage->text;

$expiryText = $this->formatExpiry( $expiry[$action] );

if ( $protectDescription !== '' ) { $protectDescription .= wfMessage( 'word-separator' )->inContentLanguage->text; }			$protectDescription .= wfMessage( 'protect-summary-desc' ) ->params( $actionText, $restrictionsText, $expiryText ) ->inContentLanguage->text; }

return $protectDescription; }

/**	 * Builds the description to serve as comment for the log entry. *	 * Some bots may parse IRC lines, which are generated from log entries which contain plain * protect description text. Keep them in old format to avoid breaking compatibility. * TODO: Fix protection log to store structured description and format it on-the-fly. *	 * @param array $limit Set of restriction keys * @param array $expiry Per restriction type expiration * @return string */	public function protectDescriptionLog( array $limit, array $expiry ) { global $wgContLang;

$protectDescriptionLog = '';

foreach ( array_filter( $limit ) as $action => $restrictions ) { $expiryText = $this->formatExpiry( $expiry[$action] ); $protectDescriptionLog .= $wgContLang->getDirMark. "[$action=$restrictions] ($expiryText)"; }

return trim( $protectDescriptionLog ); }

/**	 * Take an array of page restrictions and flatten it to a string * suitable for insertion into the page_restrictions field. *	 * @param string[] $limit *	 * @throws MWException * @return string */	protected static function flattenRestrictions( $limit ) { if ( !is_array( $limit ) ) { throw new MWException( 'WikiPage::flattenRestrictions given non-array restriction set' ); }

$bits = array; ksort( $limit );

foreach ( array_filter( $limit ) as $action => $restrictions ) { $bits[] = "$action=$restrictions"; }

return implode( ':', $bits ); }

/**	 * Same as doDeleteArticleReal, but returns a simple boolean. This is kept around for * backwards compatibility, if you care about error reporting you should use * doDeleteArticleReal instead. *	 * Deletes the article with database consistency, writes logs, purges caches *	 * @param string $reason Delete reason for deletion log * @param bool $suppress Suppress all revisions and log the deletion in	 *       the suppression log instead of the deletion log * @param int $id Article ID	 * @param bool $commit Defaults to true, triggers transaction end * @param array &$error Array of errors to append to	 * @param User $user The deleting user * @return bool true if successful */	public function doDeleteArticle(		$reason, $suppress = false, $id = 0, $commit = true, &$error = '', User $user = null	) { $status = $this->doDeleteArticleReal( $reason, $suppress, $id, $commit, $error, $user ); return $status->isGood; }

/**	 * Back-end article deletion * Deletes the article with database consistency, writes logs, purges caches *	 * @since 1.19 *	 * @param string $reason Delete reason for deletion log * @param bool $suppress Suppress all revisions and log the deletion in	 *  the suppression log instead of the deletion log * @param int $id Article ID	 * @param bool $commit Defaults to true, triggers transaction end * @param array &$error Array of errors to append to	 * @param User $user The deleting user * @return Status Status object; if successful, $status->value is the log_id of the *  deletion log entry. If the page couldn't be deleted because it wasn't	 *  found, $status is a non-fatal 'cannotdelete' error */	public function doDeleteArticleReal(		$reason, $suppress = false, $id = 0, $commit = true, &$error = '', User $user = null	) { global $wgUser, $wgContentHandlerUseDB;

wfDebug( __METHOD__ . "\n" );

$status = Status::newGood;

if ( $this->mTitle->getDBkey === '' ) { $status->error( 'cannotdelete', wfEscapeWikiText( $this->getTitle->getPrefixedText ) ); return $status; }

$user = is_null( $user ) ? $wgUser : $user; if ( ! wfRunHooks( 'ArticleDelete', array( &$this, &$user, &$reason, &$error, &$status ) ) ) { if ( $status->isOK ) { // Hook aborted but didn't set a fatal status $status->fatal( 'delete-hook-aborted' ); }			return $status; }

$dbw = wfGetDB( DB_MASTER ); $dbw->begin( __METHOD__ );

if ( $id == 0 ) { $this->loadPageData( 'forupdate' ); $id = $this->getID; if ( $id == 0 ) { $dbw->rollback( __METHOD__ ); $status->error( 'cannotdelete', wfEscapeWikiText( $this->getTitle->getPrefixedText ) ); return $status; }		}

// we need to remember the old content so we can use it to generate all deletion updates. $content = $this->getContent( Revision::RAW );

// make rev_deleted for all revisions for this page_id reflect that the page has // been deleted $dbw->update(                   'revision',                    array( 'rev_deleted=rev_deleted+'. Revision::DELETED_PAGE ),                   array( 'rev_page' => $id, 'rev_deleted<16' )               );                // Back up the page entry to deleted_page $dbw->insert(                   'deleted_page',                    array( 'dp_page_id' => $id, 'dp_page_namespace' => $this->mTitle->getNamespace, 'dp_page_title' => $this->mTitle->getDBkey )               );                // Now that it's safely backed up, delete it		$dbw->delete( 'page', array( 'page_id' => $id ), __METHOD__ ); $ok = ( $dbw->affectedRows > 0 ); // $id could be laggy

if ( !$ok ) { $dbw->rollback( __METHOD__ ); $status->error( 'cannotdelete', wfEscapeWikiText( $this->getTitle->getPrefixedText ) ); return $status; }

if ( !$dbw->cascadingDeletes ) { $dbw->delete( 'revision', array( 'rev_page' => $id ), __METHOD__ ); }

// Clone the title, so we have the information we need when we log $logTitle = clone $this->mTitle;

$this->doDeleteUpdates( $id, $content );

// Log the deletion, if the page was suppressed, log it at Oversight instead $logtype = $suppress ? 'suppress' : 'delete';

$logEntry = new ManualLogEntry( $logtype, 'delete' ); $logEntry->setPerformer( $user ); $logEntry->setTarget( $logTitle ); $logEntry->setComment( $reason ); $logid = $logEntry->insert;

$dbw->onTransactionPreCommitOrIdle( function use ( $dbw, $logEntry, $logid ) {			// Bug 56776: avoid deadlocks (especially from FileDeleteForm)			$logEntry->publish( $logid );		} );

if ( $commit ) { $dbw->commit( __METHOD__ ); }

wfRunHooks( 'ArticleDeleteComplete', array( &$this, &$user, $reason, $id, $content, $logEntry ) ); $status->value = $logid; return $status; }

/**	 * Do some database updates after deletion *	 * @param int $id page_id value of the page being deleted * @param Content $content Optional page content to be used when determining *  the required updates. This may be needed because $this->getContent *  may already return null when the page proper was deleted. */	public function doDeleteUpdates( $id, Content $content = null ) { // update site status DeferredUpdates::addUpdate( new SiteStatsUpdate( 0, 1, - (int)$this->isCountable, -1 ) );

// remove secondary indexes, etc $updates = $this->getDeletionUpdates( $content ); DataUpdate::runUpdates( $updates );

// Reparse any pages transcluding this page LinksUpdate::queueRecursiveJobsForTable( $this->mTitle, 'templatelinks' );

// Reparse any pages including this image if ( $this->mTitle->getNamespace == NS_FILE ) { LinksUpdate::queueRecursiveJobsForTable( $this->mTitle, 'imagelinks' ); }

// Clear caches WikiPage::onArticleDelete( $this->mTitle );

// Reset this object and the Title object $this->loadFromRow( false, self::READ_LATEST );

// Search engine DeferredUpdates::addUpdate( new SearchUpdate( $id, $this->mTitle ) ); }

/**	 * Roll back the most recent consecutive set of edits to a page * from the same user; fails if there are no eligible edits to * roll back to, e.g. user is the sole contributor. This function * performs permissions checks on $user, then calls commitRollback * to do the dirty work *	 * @todo Separate the business/permission stuff out from backend code *	 * @param string $fromP Name of the user whose edits to rollback. * @param string $summary Custom summary. Set to default summary if empty. * @param string $token Rollback token. * @param bool $bot If true, mark all reverted edits as bot. *	 * @param array $resultDetails contains result-specific array of additional values *   'alreadyrolled' : 'current' (rev) *   success        : 'summary' (str), 'current' (rev), 'target' (rev) *	 * @param User $user The user performing the rollback * @return array Array of errors, each error formatted as *  array(messagekey, param1, param2, ...). * On success, the array is empty. This array can also be passed to * OutputPage::showPermissionsErrorPage. */	public function doRollback(		$fromP, $summary, $token, $bot, &$resultDetails, User $user	) { $resultDetails = null;

// Check permissions $editErrors = $this->mTitle->getUserPermissionsErrors( 'edit', $user ); $rollbackErrors = $this->mTitle->getUserPermissionsErrors( 'rollback', $user ); $errors = array_merge( $editErrors, wfArrayDiff2( $rollbackErrors, $editErrors ) );

if ( !$user->matchEditToken( $token, array( $this->mTitle->getPrefixedText, $fromP ) ) ) { $errors[] = array( 'sessionfailure' ); }

if ( $user->pingLimiter( 'rollback' ) || $user->pingLimiter ) { $errors[] = array( 'actionthrottledtext' ); }

// If there were errors, bail out now if ( !empty( $errors ) ) { return $errors; }

return $this->commitRollback( $fromP, $summary, $bot, $resultDetails, $user ); }

/**	 * Backend implementation of doRollback, please refer there for parameter * and return value documentation *	 * NOTE: This function does NOT check ANY permissions, it just commits the * rollback to the DB. Therefore, you should only call this function direct- * ly if you want to use custom permissions checks. If you don't, use * doRollback instead. * @param string $fromP Name of the user whose edits to rollback. * @param string $summary Custom summary. Set to default summary if empty. * @param bool $bot If true, mark all reverted edits as bot. *	 * @param array $resultDetails Contains result-specific array of additional values * @param User $guser The user performing the rollback * @return array */	public function commitRollback( $fromP, $summary, $bot, &$resultDetails, User $guser ) { global $wgUseRCPatrol, $wgContLang;

$dbw = wfGetDB( DB_MASTER );

if ( wfReadOnly ) { return array( array( 'readonlytext' ) ); }

// Get the last editor $current = $this->getRevision; if ( is_null( $current ) ) { // Something wrong... no page? return array( array( 'notanarticle' ) ); }

$from = str_replace( '_', ' ', $fromP ); // User name given should match up with the top revision. // If the user was deleted then $from should be empty. if ( $from != $current->getUserText ) { $resultDetails = array( 'current' => $current ); return array( array( 'alreadyrolled', htmlspecialchars( $this->mTitle->getPrefixedText ), htmlspecialchars( $fromP ), htmlspecialchars( $current->getUserText ) ) );		}

// Get the last edit not by this guy... // Note: these may not be public values $user = intval( $current->getRawUser ); $user_text = $dbw->addQuotes( $current->getRawUserText ); $s = $dbw->selectRow( 'revision',			array( 'rev_id', 'rev_timestamp', 'rev_deleted' ),			array( 'rev_page' => $current->getPage, "rev_user != {$user} OR rev_user_text != {$user_text}" ), __METHOD__,			array( 'USE INDEX' => 'page_timestamp', 'ORDER BY' => 'rev_timestamp DESC' )			); if ( $s === false ) { // No one else ever edited this page return array( array( 'cantrollback' ) ); } elseif ( $s->rev_deleted & Revision::DELETED_TEXT			|| $s->rev_deleted & Revision::DELETED_USER		) { // Only admins can see this text return array( array( 'notvisiblerev' ) ); }

// Set patrolling and bot flag on the edits, which gets rollbacked. // This is done before the rollback edit to have patrolling also on failure (bug 62157). $set = array; if ( $bot && $guser->isAllowed( 'markbotedits' ) ) { // Mark all reverted edits as bot $set['rc_bot'] = 1; }

if ( $wgUseRCPatrol ) { // Mark all reverted edits as patrolled $set['rc_patrolled'] = 1; }

if ( count( $set ) ) { $dbw->update( 'recentchanges', $set,				array( /* WHERE */ 'rc_cur_id' => $current->getPage, 'rc_user_text' => $current->getUserText, 'rc_timestamp > '. $dbw->addQuotes( $s->rev_timestamp ), ), __METHOD__			); }

// Generate the edit summary if necessary $target = Revision::newFromId( $s->rev_id ); if ( empty( $summary ) ) { if ( $from == '' ) { // no public user name $summary = wfMessage( 'revertpage-nouser' ); } else { $summary = wfMessage( 'revertpage' ); }		}

// Allow the custom summary to use the same args as the default message $args = array(			$target->getUserText, $from, $s->rev_id,			$wgContLang->timeanddate( wfTimestamp( TS_MW, $s->rev_timestamp ) ),			$current->getId, $wgContLang->timeanddate( $current->getTimestamp )		); if ( $summary instanceof Message ) { $summary = $summary->params( $args )->inContentLanguage->text; } else { $summary = wfMsgReplaceArgs( $summary, $args ); }

// Trim spaces on user supplied text $summary = trim( $summary );

// Truncate for whole multibyte characters. $summary = $wgContLang->truncate( $summary, 255 );

// Save $flags = EDIT_UPDATE;

if ( $guser->isAllowed( 'minoredit' ) ) { $flags |= EDIT_MINOR; }

if ( $bot && ( $guser->isAllowedAny( 'markbotedits', 'bot' ) ) ) { $flags |= EDIT_FORCE_BOT; }

// Actually store the edit $status = $this->doEditContent(			$target->getContent,			$summary,			$flags,			$target->getId,			$guser		);

if ( !$status->isOK ) { return $status->getErrorsArray; }

// raise error, when the edit is an edit without a new version if ( empty( $status->value['revision'] ) ) { $resultDetails = array( 'current' => $current ); return array( array( 'alreadyrolled', htmlspecialchars( $this->mTitle->getPrefixedText ), htmlspecialchars( $fromP ), htmlspecialchars( $current->getUserText ) ) );		}

$revId = $status->value['revision']->getId;

wfRunHooks( 'ArticleRollbackComplete', array( $this, $guser, $target, $current ) );

$resultDetails = array(			'summary' => $summary,			'current' => $current,			'target' => $target,			'newid' => $revId		);

return array; }

/**	 * The onArticle* functions are supposed to be a kind of hooks * which should be called whenever any of the specified actions * are done. *	 * This is a good place to put code to clear caches, for instance. *	 * This is called on page move and undelete, as well as edit *	 * @param Title $title */	public static function onArticleCreate( $title ) { // Update existence markers on article/talk tabs... if ( $title->isTalkPage ) { $other = $title->getSubjectPage; } else { $other = $title->getTalkPage; }

$other->invalidateCache; $other->purgeSquid;

$title->touchLinks; $title->purgeSquid; $title->deleteTitleProtection; }

/**	 * Clears caches when article is deleted *	 * @param Title $title */	public static function onArticleDelete( $title ) { // Update existence markers on article/talk tabs... if ( $title->isTalkPage ) { $other = $title->getSubjectPage; } else { $other = $title->getTalkPage; }

$other->invalidateCache; $other->purgeSquid;

$title->touchLinks; $title->purgeSquid;

// File cache HTMLFileCache::clearFileCache( $title ); InfoAction::invalidateCache( $title );

// Messages if ( $title->getNamespace == NS_MEDIAWIKI ) { MessageCache::singleton->replace( $title->getDBkey, false ); }

// Images if ( $title->getNamespace == NS_FILE ) { $update = new HTMLCacheUpdate( $title, 'imagelinks' ); $update->doUpdate; }

// User talk pages if ( $title->getNamespace == NS_USER_TALK ) { $user = User::newFromName( $title->getText, false ); if ( $user ) { $user->setNewtalk( false ); }		}

// Image redirects RepoGroup::singleton->getLocalRepo->invalidateImageRedirect( $title ); }

/**	 * Purge caches on page update etc *	 * @param Title $title * @todo Verify that $title is always a Title object (and never false or	 *  null), add Title hint to parameter $title. */	public static function onArticleEdit( $title ) { // Invalidate caches of articles which include this page DeferredUpdates::addHTMLCacheUpdate( $title, 'templatelinks' );

// Invalidate the caches of all pages which redirect here DeferredUpdates::addHTMLCacheUpdate( $title, 'redirect' );

// Purge squid for this page only $title->purgeSquid;

// Clear file cache for this page only HTMLFileCache::clearFileCache( $title ); InfoAction::invalidateCache( $title ); }

/**#@-*/

/**	 * Returns a list of categories this page is a member of. * Results will include hidden categories *	 * @return TitleArray */	public function getCategories { $id = $this->getId; if ( $id == 0 ) { return TitleArray::newFromResult( new FakeResultWrapper( array ) ); }

$dbr = wfGetDB( DB_SLAVE ); $res = $dbr->select( 'categorylinks',			array( 'cl_to AS page_title, '. NS_CATEGORY. ' AS page_namespace' ),			// Have to do that since DatabaseBase::fieldNamesWithAlias treats numeric indexes			// as not being aliases, and NS_CATEGORY is numeric			array( 'cl_from' => $id ),			__METHOD__ );

return TitleArray::newFromResult( $res ); }

/**	 * Returns a list of hidden categories this page is a member of. * Uses the page_props and categorylinks tables. *	 * @return array Array of Title objects */	public function getHiddenCategories { $result = array; $id = $this->getId;

if ( $id == 0 ) { return array; }

$dbr = wfGetDB( DB_SLAVE ); $res = $dbr->select( array( 'categorylinks', 'page_props', 'page' ),			array( 'cl_to' ),			array( 'cl_from' => $id, 'pp_page=page_id', 'pp_propname' => 'hiddencat', 'page_namespace' => NS_CATEGORY, 'page_title=cl_to' ),			__METHOD__ );

if ( $res !== false ) { foreach ( $res as $row ) { $result[] = Title::makeTitle( NS_CATEGORY, $row->cl_to ); }		}

return $result; }

/**	 * Return an applicable autosummary if one exists for the given edit. * @param string|null $oldtext The previous text of the page. * @param string|null $newtext The submitted text of the page. * @param int $flags Bitmask: a bitmask of flags submitted for the edit. * @return string An appropriate autosummary, or an empty string. *	 * @deprecated since 1.21, use ContentHandler::getAutosummary instead */	public static function getAutosummary( $oldtext, $newtext, $flags ) { // NOTE: stub for backwards-compatibility. assumes the given text is // wikitext. will break horribly if it isn't.

ContentHandler::deprecated( __METHOD__, '1.21' );

$handler = ContentHandler::getForModelID( CONTENT_MODEL_WIKITEXT ); $oldContent = is_null( $oldtext ) ? null : $handler->unserializeContent( $oldtext ); $newContent = is_null( $newtext ) ? null : $handler->unserializeContent( $newtext );

return $handler->getAutosummary( $oldContent, $newContent, $flags ); }

/**	 * Auto-generates a deletion reason *	 * @param bool &$hasHistory Whether the page has a history * @return string|bool String containing deletion reason or empty string, or boolean false *   if no revision occurred */	public function getAutoDeleteReason( &$hasHistory ) { return $this->getContentHandler->getAutoDeleteReason( $this->getTitle, $hasHistory ); }

/**	 * Update all the appropriate counts in the category table, given that * we've added the categories $added and deleted the categories $deleted. *	 * @param array $added The names of categories that were added * @param array $deleted The names of categories that were deleted */	public function updateCategoryCounts( array $added, array $deleted ) { $that = $this; $method = __METHOD__; $dbw = wfGetDB( DB_MASTER );

// Do this at the end of the commit to reduce lock wait timeouts $dbw->onTransactionPreCommitOrIdle(			function use ( $dbw, $that, $method, $added, $deleted ) {				$ns = $that->getTitle->getNamespace;

$addFields = array( 'cat_pages = cat_pages + 1' ); $removeFields = array( 'cat_pages = cat_pages - 1' ); if ( $ns == NS_CATEGORY ) { $addFields[] = 'cat_subcats = cat_subcats + 1'; $removeFields[] = 'cat_subcats = cat_subcats - 1'; } elseif ( $ns == NS_FILE ) { $addFields[] = 'cat_files = cat_files + 1'; $removeFields[] = 'cat_files = cat_files - 1'; }

if ( count( $added ) ) { $insertRows = array; foreach ( $added as $cat ) { $insertRows[] = array(							'cat_title'  => $cat,							'cat_pages'   => 1,							'cat_subcats' => ( $ns == NS_CATEGORY ) ? 1 : 0,							'cat_files'   => ( $ns == NS_FILE ) ? 1 : 0,						); }					$dbw->upsert(						'category',						$insertRows,						array( 'cat_title' ),						$addFields,						$method					); }

if ( count( $deleted ) ) { $dbw->update(						'category',						$removeFields,						array( 'cat_title' => $deleted ),						$method					); }

foreach ( $added as $catName ) { $cat = Category::newFromName( $catName ); wfRunHooks( 'CategoryAfterPageAdded', array( $cat, $that ) ); }

foreach ( $deleted as $catName ) { $cat = Category::newFromName( $catName ); wfRunHooks( 'CategoryAfterPageRemoved', array( $cat, $that ) ); }			}		);	}

/**	 * Updates cascading protections *	 * @param ParserOutput $parserOutput ParserOutput object for the current version */	public function doCascadeProtectionUpdates( ParserOutput $parserOutput ) { if ( wfReadOnly || !$this->mTitle->areRestrictionsCascading ) { return; }

// templatelinks or imagelinks tables may have become out of sync, // especially if using variable-based transclusions. // For paranoia, check if things have changed and if // so apply updates to the database. This will ensure // that cascaded protections apply as soon as the changes // are visible.

// Get templates from templatelinks and images from imagelinks $id = $this->getId;

$dbLinks = array;

$dbr = wfGetDB( DB_SLAVE ); $res = $dbr->select( array( 'templatelinks' ),			array( 'tl_namespace', 'tl_title' ),			array( 'tl_from' => $id ),			__METHOD__		);

foreach ( $res as $row ) { $dbLinks["{$row->tl_namespace}:{$row->tl_title}"] = true; }

$dbr = wfGetDB( DB_SLAVE ); $res = $dbr->select( array( 'imagelinks' ),			array( 'il_to' ),			array( 'il_from' => $id ),			__METHOD__		);

foreach ( $res as $row ) { $dbLinks[NS_FILE. ":{$row->il_to}"] = true; }

// Get templates and images from parser output. $poLinks = array; foreach ( $parserOutput->getTemplates as $ns => $templates ) { foreach ( $templates as $dbk => $id ) { $poLinks["$ns:$dbk"] = true; }		}		foreach ( $parserOutput->getImages as $dbk => $id ) { $poLinks[NS_FILE. ":$dbk"] = true; }

// Get the diff $links_diff = array_diff_key( $poLinks, $dbLinks );

if ( count( $links_diff ) > 0 ) { // Whee, link updates time. // Note: we are only interested in links here. We don't need to get // other DataUpdate items from the parser output. $u = new LinksUpdate( $this->mTitle, $parserOutput, false ); $u->doUpdate; }	}

/**	 * Return a list of templates used by this article. * Uses the templatelinks table *	 * @deprecated since 1.19; use Title::getTemplateLinksFrom * @return array Array of Title objects */	public function getUsedTemplates { return $this->mTitle->getTemplateLinksFrom; }

/**	 * This function is called right before saving the wikitext, * so we can do things like signatures and links-in-context. *	 * @deprecated since 1.19; use Parser::preSaveTransform instead * @param string $text Article contents * @param User $user User doing the edit * @param ParserOptions $popts Parser options, default options for *  the user loaded if null given * @return string Article contents with altered wikitext markup (signatures	 * 	converted,, templates, etc.) */	public function preSaveTransform( $text, User $user = null, ParserOptions $popts = null ) { global $wgParser, $wgUser;

wfDeprecated( __METHOD__, '1.19' );

$user = is_null( $user ) ? $wgUser : $user;

if ( $popts === null ) { $popts = ParserOptions::newFromUser( $user ); }

return $wgParser->preSaveTransform( $text, $this->mTitle, $user, $popts ); }

/**	 * Get the approximate revision count of this page. *	 * @deprecated since 1.19; use Title::estimateRevisionCount instead. * @return int */	public function estimateRevisionCount { wfDeprecated( __METHOD__, '1.19' ); return $this->mTitle->estimateRevisionCount; }

/**	 * Update the article's restriction field, and leave a log entry. *	 * @deprecated since 1.19 * @param array $limit Set of restriction keys * @param string $reason * @param int &$cascade Set to false if cascading protection isn't allowed. * @param array $expiry Per restriction type expiration * @param User $user The user updating the restrictions * @return bool true on success */	public function updateRestrictions(		$limit = array, $reason = '', &$cascade = 0, $expiry = array, User $user = null	) { global $wgUser;

$user = is_null( $user ) ? $wgUser : $user;

return $this->doUpdateRestrictions( $limit, $expiry, $cascade, $reason, $user )->isOK; }

/**	 * Returns a list of updates to be performed when this page is deleted. The * updates should remove any information about this page from secondary data * stores such as links tables. *	 * @param Content|null $content Optional Content object for determining the *  necessary updates. * @return array An array of DataUpdates objects */	public function getDeletionUpdates( Content $content = null ) { if ( !$content ) { // load content object, which may be used to determine the necessary updates // XXX: the content may not be needed to determine the updates, then this would be overhead. $content = $this->getContent( Revision::RAW ); }

if ( !$content ) { $updates = array; } else { $updates = $content->getDeletionUpdates( $this ); }

wfRunHooks( 'WikiPageDeletionUpdates', array( $this, $content, &$updates ) ); return $updates; } }