wiki.techinc.nl/includes/Title.php

1757 lines
48 KiB
PHP

<?php
/**
* $Id$
* See title.doc
*
* @package MediaWiki
*/
/** */
require_once( 'normal/UtfNormal.php' );
$wgTitleInterwikiCache = array();
define ( 'GAID_FOR_UPDATE', 1 );
/**
* Title class
* - Represents a title, which may contain an interwiki designation or namespace
* - Can fetch various kinds of data from the database, albeit inefficiently.
*
* @package MediaWiki
*/
class Title {
/**
* All member variables should be considered private
* Please use the accessor functions
*/
/**#@+
* @access private
*/
var $mTextform; # Text form (spaces not underscores) of the main part
var $mUrlform; # URL-encoded form of the main part
var $mDbkeyform; # Main part with underscores
var $mNamespace; # Namespace index, i.e. one of the NS_xxxx constants
var $mInterwiki; # Interwiki prefix (or null string)
var $mFragment; # Title fragment (i.e. the bit after the #)
var $mArticleID; # Article ID, fetched from the link cache on demand
var $mRestrictions; # Array of groups allowed to edit this article
# Only null or "sysop" are supported
var $mRestrictionsLoaded; # Boolean for initialisation on demand
var $mPrefixedText; # Text form including namespace/interwiki, initialised on demand
var $mDefaultNamespace; # Namespace index when there is no namespace
# Zero except in {{transclusion}} tags
/**#@-*/
/**
* Constructor
* @access private
*/
/* private */ function Title() {
$this->mInterwiki = $this->mUrlform =
$this->mTextform = $this->mDbkeyform = '';
$this->mArticleID = -1;
$this->mNamespace = 0;
$this->mRestrictionsLoaded = false;
$this->mRestrictions = array();
$this->mDefaultNamespace = 0;
}
/**
* Create a new Title from a prefixed DB key
* @param string $key The database key, which has underscores
* instead of spaces, possibly including namespace and
* interwiki prefixes
* @return Title the new object, or NULL on an error
* @static
* @access public
*/
/* static */ function newFromDBkey( $key ) {
$t = new Title();
$t->mDbkeyform = $key;
if( $t->secureAndSplit() )
return $t;
else
return NULL;
}
/**
* Create a new Title from text, such as what one would
* find in a link. Decodes any HTML entities in the text.
*
* @param string $text the link text; spaces, prefixes,
* and an initial ':' indicating the main namespace
* are accepted
* @param int $defaultNamespace the namespace to use if
* none is specified by a prefix
* @return Title the new object, or NULL on an error
* @static
* @access public
*/
/* static */ function newFromText( $text, $defaultNamespace = 0 ) {
$fname = 'Title::newFromText';
wfProfileIn( $fname );
if( is_object( $text ) ) {
wfDebugDieBacktrace( 'Called with object instead of string.' );
}
global $wgInputEncoding;
$text = do_html_entity_decode( $text, ENT_COMPAT, $wgInputEncoding );
$text = wfMungeToUtf8( $text );
# What was this for? TS 2004-03-03
# $text = urldecode( $text );
$t = new Title();
$t->mDbkeyform = str_replace( ' ', '_', $text );
$t->mDefaultNamespace = $defaultNamespace;
wfProfileOut( $fname );
if ( !is_object( $t ) ) {
var_dump( debug_backtrace() );
}
if( $t->secureAndSplit() ) {
return $t;
} else {
return NULL;
}
}
/**
* Create a new Title from URL-encoded text. Ensures that
* the given title's length does not exceed the maximum.
* @param string $url the title, as might be taken from a URL
* @return Title the new object, or NULL on an error
* @static
* @access public
*/
/* static */ function newFromURL( $url ) {
global $wgLang, $wgServer;
$t = new Title();
# For compatibility with old buggy URLs. "+" is not valid in titles,
# but some URLs used it as a space replacement and they still come
# from some external search tools.
$s = str_replace( '+', ' ', $url );
$t->mDbkeyform = str_replace( ' ', '_', $s );
if( $t->secureAndSplit() ) {
return $t;
} else {
return NULL;
}
}
/**
* Create a new Title from an article ID
* @todo This is inefficiently implemented, the cur row is requested
* but not used for anything else
* @param int $id the cur_id corresponding to the Title to create
* @return Title the new object, or NULL on an error
* @access public
*/
/* static */ function newFromID( $id ) {
$fname = 'Title::newFromID';
$dbr =& wfGetDB( DB_SLAVE );
$row = $dbr->selectRow( 'cur', array( 'cur_namespace', 'cur_title' ),
array( 'cur_id' => $id ), $fname );
if ( $row !== false ) {
$title = Title::makeTitle( $row->cur_namespace, $row->cur_title );
} else {
$title = NULL;
}
return $title;
}
/**
* Create a new Title from a namespace index and a DB key.
* It's assumed that $ns and $title are *valid*, for instance when
* they came directly from the database or a special page name.
* @param int $ns the namespace of the article
* @param string $title the unprefixed database key form
* @return Title the new object
* @static
* @access public
*/
/* static */ function &makeTitle( $ns, $title ) {
$t =& new Title();
$t->mInterwiki = '';
$t->mFragment = '';
$t->mNamespace = IntVal( $ns );
$t->mDbkeyform = $title;
$t->mArticleID = ( $ns >= 0 ) ? -1 : 0;
$t->mUrlform = wfUrlencode( $title );
$t->mTextform = str_replace( '_', ' ', $title );
return $t;
}
/**
* Create a new Title frrom a namespace index and a DB key.
* The parameters will be checked for validity, which is a bit slower
* than makeTitle() but safer for user-provided data.
* @param int $ns the namespace of the article
* @param string $title the database key form
* @return Title the new object, or NULL on an error
* @static
* @access public
*/
/* static */ function makeTitleSafe( $ns, $title ) {
$t = new Title();
$t->mDbkeyform = Title::makeName( $ns, $title );
if( $t->secureAndSplit() ) {
return $t;
} else {
return NULL;
}
}
/**
* Create a new Title for the Main Page
* @static
* @return Title the new object
* @access public
*/
/* static */ function newMainPage() {
return Title::newFromText( wfMsgForContent( 'mainpage' ) );
}
/**
* Create a new Title for a redirect
* @param string $text the redirect title text
* @return Title the new object, or NULL if the text is not a
* valid redirect
* @static
* @access public
*/
/* static */ function newFromRedirect( $text ) {
global $wgMwRedir;
$rt = NULL;
if ( $wgMwRedir->matchStart( $text ) ) {
if ( preg_match( '/\\[\\[([^\\]\\|]+)[\\]\\|]/', $text, $m ) ) {
# categories are escaped using : for example one can enter:
# #REDIRECT [[:Category:Music]]. Need to remove it.
if ( substr($m[1],0,1) == ':') {
# We don't want to keep the ':'
$m[1] = substr( $m[1], 1 );
}
$rt = Title::newFromText( $m[1] );
# Disallow redirects to Special:Userlogout
if ( !is_null($rt) && $rt->getNamespace() == NS_SPECIAL && preg_match( '/^Userlogout/i', $rt->getText() ) ) {
$rt = NULL;
}
}
}
return $rt;
}
#----------------------------------------------------------------------------
# Static functions
#----------------------------------------------------------------------------
/**
* Get the prefixed DB key associated with an ID
* @param int $id the cur_id of the article
* @return Title an object representing the article, or NULL
* if no such article was found
* @static
* @access public
*/
/* static */ function nameOf( $id ) {
$fname = 'Title::nameOf';
$dbr =& wfGetDB( DB_SLAVE );
$s = $dbr->selectRow( 'cur', array( 'cur_namespace','cur_title' ), array( 'cur_id' => $id ), $fname );
if ( $s === false ) { return NULL; }
$n = Title::makeName( $s->cur_namespace, $s->cur_title );
return $n;
}
/**
* Get a regex character class describing the legal characters in a link
* @return string the list of characters, not delimited
* @static
* @access public
*/
/* static */ function legalChars() {
# Missing characters:
# * []|# Needed for link syntax
# * % and + are corrupted by Apache when they appear in the path
#
# % seems to work though
#
# The problem with % is that URLs are double-unescaped: once by Apache's
# path conversion code, and again by PHP. So %253F, for example, becomes "?".
# Our code does not double-escape to compensate for this, indeed double escaping
# would break if the double-escaped title was passed in the query string
# rather than the path. This is a minor security issue because articles can be
# created such that they are hard to view or edit. -- TS
#
# Theoretically 0x80-0x9F of ISO 8859-1 should be disallowed, but
# this breaks interlanguage links
$set = " %!\"$&'()*,\\-.\\/0-9:;=?@A-Z\\\\^_`a-z~\\x80-\\xFF";
return $set;
}
/**
* Get a string representation of a title suitable for
* including in a search index
*
* @param int $ns a namespace index
* @param string $title text-form main part
* @return string a stripped-down title string ready for the
* search index
*/
/* static */ function indexTitle( $ns, $title ) {
global $wgDBminWordLen, $wgContLang;
require_once( 'SearchEngine.php' );
$lc = SearchEngine::legalSearchChars() . '&#;';
$t = $wgContLang->stripForSearch( $title );
$t = preg_replace( "/[^{$lc}]+/", ' ', $t );
$t = strtolower( $t );
# Handle 's, s'
$t = preg_replace( "/([{$lc}]+)'s( |$)/", "\\1 \\1's ", $t );
$t = preg_replace( "/([{$lc}]+)s'( |$)/", "\\1s ", $t );
$t = preg_replace( "/\\s+/", ' ', $t );
if ( $ns == Namespace::getImage() ) {
$t = preg_replace( "/ (png|gif|jpg|jpeg|ogg)$/", "", $t );
}
return trim( $t );
}
/*
* Make a prefixed DB key from a DB key and a namespace index
* @param int $ns numerical representation of the namespace
* @param string $title the DB key form the title
* @return string the prefixed form of the title
*/
/* static */ function makeName( $ns, $title ) {
global $wgContLang;
$n = $wgContLang->getNsText( $ns );
if ( '' == $n ) { return $title; }
else { return $n.':'.$title; }
}
/**
* Returns the URL associated with an interwiki prefix
* @param string $key the interwiki prefix (e.g. "MeatBall")
* @return the associated URL, containing "$1", which should be
* replaced by an article title
* @static (arguably)
* @access public
*/
function getInterwikiLink( $key ) {
global $wgMemc, $wgDBname, $wgInterwikiExpiry, $wgTitleInterwikiCache;
$fname = 'Title::getInterwikiLink';
$k = $wgDBname.':interwiki:'.$key;
if( array_key_exists( $k, $wgTitleInterwikiCache ) )
return $wgTitleInterwikiCache[$k]->iw_url;
$s = $wgMemc->get( $k );
# Ignore old keys with no iw_local
if( $s && isset( $s->iw_local ) ) {
$wgTitleInterwikiCache[$k] = $s;
return $s->iw_url;
}
$dbr =& wfGetDB( DB_SLAVE );
$res = $dbr->select( 'interwiki', array( 'iw_url', 'iw_local' ), array( 'iw_prefix' => $key ), $fname );
if(!$res) return '';
$s = $dbr->fetchObject( $res );
if(!$s) {
# Cache non-existence: create a blank object and save it to memcached
$s = (object)false;
$s->iw_url = '';
$s->iw_local = 0;
}
$wgMemc->set( $k, $s, $wgInterwikiExpiry );
$wgTitleInterwikiCache[$k] = $s;
return $s->iw_url;
}
/**
* Determine whether the object refers to a page within
* this project.
*
* @return bool TRUE if this is an in-project interwiki link
* or a wikilink, FALSE otherwise
* @access public
*/
function isLocal() {
global $wgTitleInterwikiCache, $wgDBname;
if ( $this->mInterwiki != '' ) {
# Make sure key is loaded into cache
$this->getInterwikiLink( $this->mInterwiki );
$k = $wgDBname.':interwiki:' . $this->mInterwiki;
return (bool)($wgTitleInterwikiCache[$k]->iw_local);
} else {
return true;
}
}
/**
* Update the cur_touched field for an array of title objects
* @todo Inefficient unless the IDs are already loaded into the
* link cache
* @param array $titles an array of Title objects to be touched
* @param string $timestamp the timestamp to use instead of the
* default current time
* @static
* @access public
*/
/* static */ function touchArray( $titles, $timestamp = '' ) {
if ( count( $titles ) == 0 ) {
return;
}
$dbw =& wfGetDB( DB_MASTER );
if ( $timestamp == '' ) {
$timestamp = $dbw->timestamp();
}
$cur = $dbw->tableName( 'cur' );
$sql = "UPDATE $cur SET cur_touched='{$timestamp}' WHERE cur_id IN (";
$first = true;
foreach ( $titles as $title ) {
if ( ! $first ) {
$sql .= ',';
}
$first = false;
$sql .= $title->getArticleID();
}
$sql .= ')';
if ( ! $first ) {
$dbw->query( $sql, 'Title::touchArray' );
}
}
#----------------------------------------------------------------------------
# Other stuff
#----------------------------------------------------------------------------
/** Simple accessors */
/**
* Get the text form (spaces not underscores) of the main part
* @return string
* @access public
*/
function getText() { return $this->mTextform; }
/**
* Get the URL-encoded form of the main part
* @return string
* @access public
*/
function getPartialURL() { return $this->mUrlform; }
/**
* Get the main part with underscores
* @return string
* @access public
*/
function getDBkey() { return $this->mDbkeyform; }
/**
* Get the namespace index, i.e. one of the NS_xxxx constants
* @return int
* @access public
*/
function getNamespace() { return $this->mNamespace; }
/**
* Set the namespace index
* @param int $n the namespace index, one of the NS_xxxx constants
* @access public
*/
function setNamespace( $n ) { $this->mNamespace = IntVal( $n ); }
/**
* Get the interwiki prefix (or null string)
* @return string
* @access public
*/
function getInterwiki() { return $this->mInterwiki; }
/**
* Get the Title fragment (i.e. the bit after the #)
* @return string
* @access public
*/
function getFragment() { return $this->mFragment; }
/**
* Get the default namespace index, for when there is no namespace
* @return int
* @access public
*/
function getDefaultNamespace() { return $this->mDefaultNamespace; }
/**
* Get title for search index
* @return string a stripped-down title string ready for the
* search index
*/
function getIndexTitle() {
return Title::indexTitle( $this->mNamespace, $this->mTextform );
}
/**
* Get the prefixed database key form
* @return string the prefixed title, with underscores and
* any interwiki and namespace prefixes
* @access public
*/
function getPrefixedDBkey() {
$s = $this->prefix( $this->mDbkeyform );
$s = str_replace( ' ', '_', $s );
return $s;
}
/**
* Get the prefixed title with spaces.
* This is the form usually used for display
* @return string the prefixed title, with spaces
* @access public
*/
function getPrefixedText() {
global $wgContLang;
if ( empty( $this->mPrefixedText ) ) {
$s = $this->prefix( $this->mTextform );
$s = str_replace( '_', ' ', $s );
$this->mPrefixedText = $s;
}
return $this->mPrefixedText;
}
/**
* Get the prefixed title with spaces, plus any fragment
* (part beginning with '#')
* @return string the prefixed title, with spaces and
* the fragment, including '#'
* @access public
*/
function getFullText() {
global $wgContLang;
$text = $this->getPrefixedText();
if( '' != $this->mFragment ) {
$text .= '#' . $this->mFragment;
}
return $text;
}
/**
* Get a URL-encoded title (not an actual URL) including interwiki
* @return string the URL-encoded form
* @access public
*/
function getPrefixedURL() {
$s = $this->prefix( $this->mDbkeyform );
$s = str_replace( ' ', '_', $s );
$s = wfUrlencode ( $s ) ;
# Cleaning up URL to make it look nice -- is this safe?
$s = preg_replace( '/%3[Aa]/', ':', $s );
$s = preg_replace( '/%2[Ff]/', '/', $s );
$s = str_replace( '%28', '(', $s );
$s = str_replace( '%29', ')', $s );
return $s;
}
/**
* Get a real URL referring to this title, with interwiki link and
* fragment
*
* @param string $query an optional query string, not used
* for interwiki links
* @return string the URL
* @access public
*/
function getFullURL( $query = '' ) {
global $wgContLang, $wgArticlePath, $wgServer, $wgScript;
if ( '' == $this->mInterwiki ) {
$p = $wgArticlePath;
return $wgServer . $this->getLocalUrl( $query );
} else {
$baseUrl = $this->getInterwikiLink( $this->mInterwiki );
$namespace = $wgContLang->getNsText( $this->mNamespace );
if ( '' != $namespace ) {
# Can this actually happen? Interwikis shouldn't be parsed.
$namepace .= ':';
}
$url = str_replace( '$1', $namespace . $this->mUrlform, $baseUrl );
if ( '' != $this->mFragment ) {
$url .= '#' . $this->mFragment;
}
return $url;
}
}
/**
* @deprecated
*/
function getURL() {
die( 'Call to obsolete obsolete function Title::getURL()' );
}
/**
* Get a URL with no fragment or server name
* @param string $query an optional query string; if not specified,
* $wgArticlePath will be used.
* @return string the URL
* @access public
*/
function getLocalURL( $query = '' ) {
global $wgLang, $wgArticlePath, $wgScript;
if ( $this->isExternal() ) {
return $this->getFullURL();
}
$dbkey = wfUrlencode( $this->getPrefixedDBkey() );
if ( $query == '' ) {
$url = str_replace( '$1', $dbkey, $wgArticlePath );
} else {
if ( $query == '-' ) {
$query = '';
}
if ( $wgScript != '' ) {
$url = "{$wgScript}?title={$dbkey}&{$query}";
} else {
# Top level wiki
$url = "/{$dbkey}?{$query}";
}
}
return $url;
}
/**
* Get an HTML-escaped version of the URL form, suitable for
* using in a link, without a server name or fragment
* @param string $query an optional query string
* @return string the URL
* @access public
*/
function escapeLocalURL( $query = '' ) {
return htmlspecialchars( $this->getLocalURL( $query ) );
}
/**
* Get an HTML-escaped version of the URL form, suitable for
* using in a link, including the server name and fragment
*
* @return string the URL
* @param string $query an optional query string
* @access public
*/
function escapeFullURL( $query = '' ) {
return htmlspecialchars( $this->getFullURL( $query ) );
}
/**
* Get the URL form for an internal link.
* - Used in various Squid-related code, in case we have a different
* internal hostname for the server from the exposed one.
*
* @param string $query an optional query string
* @return string the URL
* @access public
*/
function getInternalURL( $query = '' ) {
global $wgInternalServer;
return $wgInternalServer . $this->getLocalURL( $query );
}
/**
* Get the edit URL for this Title
* @return string the URL, or a null string if this is an
* interwiki link
* @access public
*/
function getEditURL() {
global $wgServer, $wgScript;
if ( '' != $this->mInterwiki ) { return ''; }
$s = $this->getLocalURL( 'action=edit' );
return $s;
}
/**
* Get the HTML-escaped displayable text form.
* Used for the title field in <a> tags.
* @return string the text, including any prefixes
* @access public
*/
function getEscapedText() {
return htmlspecialchars( $this->getPrefixedText() );
}
/**
* Is this Title interwiki?
* @return boolean
* @access public
*/
function isExternal() { return ( '' != $this->mInterwiki ); }
/**
* Does the title correspond to a protected article?
* @return boolean
* @access public
*/
function isProtected() {
if ( -1 == $this->mNamespace ) { return true; }
$a = $this->getRestrictions();
if ( in_array( 'sysop', $a ) ) { return true; }
return false;
}
/**
* Is the page a log page, i.e. one where the history is messed up by
* LogPage.php? This used to be used for suppressing diff links in
* recent changes, but now that's done by setting a flag in the
* recentchanges table. Hence, this probably is no longer used.
*
* @deprecated
* @access public
*/
function isLog() {
if ( $this->mNamespace != Namespace::getWikipedia() ) {
return false;
}
if ( ( 0 == strcmp( wfMsg( 'uploadlogpage' ), $this->mDbkeyform ) ) ||
( 0 == strcmp( wfMsg( 'dellogpage' ), $this->mDbkeyform ) ) ) {
return true;
}
return false;
}
/**
* Is $wgUser is watching this page?
* @return boolean
* @access public
*/
function userIsWatching() {
global $wgUser;
if ( -1 == $this->mNamespace ) { return false; }
if ( 0 == $wgUser->getID() ) { return false; }
return $wgUser->isWatched( $this );
}
/**
* Can $wgUser edit this page?
* @return boolean
* @access public
*/
function userCanEdit() {
global $wgUser;
if( NS_SPECIAL == $this->mNamespace ) {
return false;
}
if( NS_MEDIAWIKI == $this->mNamespace &&
!$wgUser->isAllowed('editinterface') ) {
return false;
}
if( $this->mDbkeyform == '_' ) {
# FIXME: Is this necessary? Shouldn't be allowed anyway...
return false;
}
# protect global styles and js
if ( NS_MEDIAWIKI == $this->mNamespace
&& preg_match("/\\.(css|js)$/", $this->mTextform )
&& !$wgUser->isAllowed('editinterface') ) {
return false;
}
# protect css/js subpages of user pages
# XXX: this might be better using restrictions
# XXX: Find a way to work around the php bug that prevents using $this->userCanEditCssJsSubpage() from working
if( NS_USER == $this->mNamespace
&& preg_match("/\\.(css|js)$/", $this->mTextform )
&& !$wgUser->isAllowed('editinterface')
&& !preg_match('/^'.preg_quote($wgUser->getName(), '/').'\//', $this->mTextform) ) {
return false;
}
foreach( $this->getRestrictions() as $right ) {
if( '' != $right && !$wgUser->isAllowed( $right ) ) {
return false;
}
}
return true;
}
/**
* Can $wgUser read this page?
* @return boolean
* @access public
*/
function userCanRead() {
global $wgUser;
if( $wgUser->isAllowed('read') ) {
return true;
} else {
global $wgWhitelistRead;
/** If anon users can create an account,
they need to reach the login page first! */
if( $wgUser->isAllowed( 'createaccount' )
&& $this->mId == NS_SPECIAL
&& $this->getText() == 'Userlogin' ) {
return true;
}
/** some pages are explicitly allowed */
$name = $this->getPrefixedText();
if( in_array( $name, $wgWhitelistRead ) ) {
return true;
}
# Compatibility with old settings
if( $this->getNamespace() == NS_MAIN ) {
if( in_array( ':' . $name, $wgWhitelistRead ) ) {
return true;
}
}
}
return false;
}
/**
* Is this a .css or .js subpage of a user page?
* @return bool
* @access public
*/
function isCssJsSubpage() {
return ( Namespace::getUser() == $this->mNamespace and preg_match("/\\.(css|js)$/", $this->mTextform ) );
}
/**
* Is this a .css subpage of a user page?
* @return bool
* @access public
*/
function isCssSubpage() {
return ( Namespace::getUser() == $this->mNamespace and preg_match("/\\.css$/", $this->mTextform ) );
}
/**
* Is this a .js subpage of a user page?
* @return bool
* @access public
*/
function isJsSubpage() {
return ( Namespace::getUser() == $this->mNamespace and preg_match("/\\.js$/", $this->mTextform ) );
}
/**
* Protect css/js subpages of user pages: can $wgUser edit
* this page?
*
* @return boolean
* @todo XXX: this might be better using restrictions
* @access public
*/
function userCanEditCssJsSubpage() {
global $wgUser;
return ( $wgUser->isAllowed('editinterface') or preg_match('/^'.preg_quote($wgUser->getName(), '/').'\//', $this->mTextform) );
}
/**
* Accessor/initialisation for mRestrictions
* @return array the array of groups allowed to edit this article
* @access public
*/
function getRestrictions() {
$id = $this->getArticleID();
if ( 0 == $id ) { return array(); }
if ( ! $this->mRestrictionsLoaded ) {
$dbr =& wfGetDB( DB_SLAVE );
$res = $dbr->selectField( 'cur', 'cur_restrictions', 'cur_id='.$id );
$this->mRestrictions = explode( ',', trim( $res ) );
$this->mRestrictionsLoaded = true;
}
return $this->mRestrictions;
}
/**
* Is there a version of this page in the deletion archive?
* @return int the number of archived revisions
* @access public
*/
function isDeleted() {
$fname = 'Title::isDeleted';
$dbr =& wfGetDB( DB_SLAVE );
$n = $dbr->selectField( 'archive', 'COUNT(*)', array( 'ar_namespace' => $this->getNamespace(),
'ar_title' => $this->getDBkey() ), $fname );
return (int)$n;
}
/**
* Get the article ID for this Title from the link cache,
* adding it if necessary
* @param int $flags a bit field; may be GAID_FOR_UPDATE to select
* for update
* @return int the ID
* @access public
*/
function getArticleID( $flags = 0 ) {
global $wgLinkCache;
if ( $flags & GAID_FOR_UPDATE ) {
$oldUpdate = $wgLinkCache->forUpdate( true );
$this->mArticleID = $wgLinkCache->addLinkObj( $this );
$wgLinkCache->forUpdate( $oldUpdate );
} else {
if ( -1 == $this->mArticleID ) {
$this->mArticleID = $wgLinkCache->addLinkObj( $this );
}
}
return $this->mArticleID;
}
/**
* This clears some fields in this object, and clears any associated
* keys in the "bad links" section of $wgLinkCache.
*
* - This is called from Article::insertNewArticle() to allow
* loading of the new cur_id. It's also called from
* Article::doDeleteArticle()
*
* @param int $newid the new Article ID
* @access public
*/
function resetArticleID( $newid ) {
global $wgLinkCache;
$wgLinkCache->clearBadLink( $this->getPrefixedDBkey() );
if ( 0 == $newid ) { $this->mArticleID = -1; }
else { $this->mArticleID = $newid; }
$this->mRestrictionsLoaded = false;
$this->mRestrictions = array();
}
/**
* Updates cur_touched for this page; called from LinksUpdate.php
* @return bool true if the update succeded
* @access public
*/
function invalidateCache() {
$now = wfTimestampNow();
$dbw =& wfGetDB( DB_MASTER );
$success = $dbw->update( 'cur',
array( /* SET */
'cur_touched' => $dbw->timestamp()
), array( /* WHERE */
'cur_namespace' => $this->getNamespace() ,
'cur_title' => $this->getDBkey()
), 'Title::invalidateCache'
);
return $success;
}
/**
* Prefix some arbitrary text with the namespace or interwiki prefix
* of this object
*
* @param string $name the text
* @return string the prefixed text
* @access private
*/
/* private */ function prefix( $name ) {
global $wgContLang;
$p = '';
if ( '' != $this->mInterwiki ) {
$p = $this->mInterwiki . ':';
}
if ( 0 != $this->mNamespace ) {
$p .= $wgContLang->getNsText( $this->mNamespace ) . ':';
}
return $p . $name;
}
/**
* Secure and split - main initialisation function for this object
*
* Assumes that mDbkeyform has been set, and is urldecoded
* and uses underscores, but not otherwise munged. This function
* removes illegal characters, splits off the interwiki and
* namespace prefixes, sets the other forms, and canonicalizes
* everything.
* @return bool true on success
* @access private
*/
/* private */ function secureAndSplit()
{
global $wgContLang, $wgLocalInterwiki, $wgCapitalLinks;
$fname = 'Title::secureAndSplit';
wfProfileIn( $fname );
static $imgpre = false;
static $rxTc = false;
# Initialisation
if ( $imgpre === false ) {
$imgpre = ':' . $wgContLang->getNsText( Namespace::getImage() ) . ':';
# % is needed as well
$rxTc = '/[^' . Title::legalChars() . ']|%[0-9A-Fa-f]{2}/';
}
$this->mInterwiki = $this->mFragment = '';
$this->mNamespace = $this->mDefaultNamespace; # Usually NS_MAIN
# Clean up whitespace
#
$t = preg_replace( "/[\\s_]+/", '_', $this->mDbkeyform );
$t = preg_replace( '/^_*(.*?)_*$/', '$1', $t );
if ( '' == $t ) {
wfProfileOut( $fname );
return false;
}
global $wgUseLatin1;
if( !$wgUseLatin1 && false !== strpos( $t, UTF8_REPLACEMENT ) ) {
# Contained illegal UTF-8 sequences or forbidden Unicode chars.
wfProfileOut( $fname );
return false;
}
$this->mDbkeyform = $t;
$done = false;
# :Image: namespace
if ( 0 == strncasecmp( $imgpre, $t, strlen( $imgpre ) ) ) {
$t = substr( $t, 1 );
}
# Initial colon indicating main namespace
if ( ':' == $t{0} ) {
$r = substr( $t, 1 );
$this->mNamespace = NS_MAIN;
} else {
# Namespace or interwiki prefix
if ( preg_match( "/^(.+?)_*:_*(.*)$/", $t, $m ) ) {
#$p = strtolower( $m[1] );
$p = $m[1];
$lowerNs = strtolower( $p );
if ( $ns = Namespace::getCanonicalIndex( $lowerNs ) ) {
# Canonical namespace
$t = $m[2];
$this->mNamespace = $ns;
} elseif ( $ns = $wgContLang->getNsIndex( $lowerNs )) {
# Ordinary namespace
$t = $m[2];
$this->mNamespace = $ns;
} elseif ( $this->getInterwikiLink( $p ) ) {
# Interwiki link
$t = $m[2];
$this->mInterwiki = $p;
if ( !preg_match( "/^([A-Za-z0-9_\\x80-\\xff]+):(.*)$/", $t, $m ) ) {
$done = true;
} elseif($this->mInterwiki != $wgLocalInterwiki) {
$done = true;
}
}
}
$r = $t;
}
# Redundant interwiki prefix to the local wiki
if ( 0 == strcmp( $this->mInterwiki, $wgLocalInterwiki ) ) {
$this->mInterwiki = '';
}
# We already know that some pages won't be in the database!
#
if ( '' != $this->mInterwiki || -1 == $this->mNamespace ) {
$this->mArticleID = 0;
}
$f = strstr( $r, '#' );
if ( false !== $f ) {
$this->mFragment = substr( $f, 1 );
$r = substr( $r, 0, strlen( $r ) - strlen( $f ) );
# remove whitespace again: prevents "Foo_bar_#"
# becoming "Foo_bar_"
$r = preg_replace( '/_*$/', '', $r );
}
# Reject illegal characters.
#
if( preg_match( $rxTc, $r ) ) {
wfProfileOut( $fname );
return false;
}
# "." and ".." conflict with the directories of those namesa
if ( strpos( $r, '.' ) !== false &&
( $r === '.' || $r === '..' ||
strpos( $r, './' ) === 0 ||
strpos( $r, '../' ) === 0 ||
strpos( $r, '/./' ) !== false ||
strpos( $r, '/../' ) !== false ) )
{
wfProfileOut( $fname );
return false;
}
# We shouldn't need to query the DB for the size.
#$maxSize = $dbr->textFieldSize( 'cur', 'cur_title' );
if ( strlen( $r ) > 255 ) {
return false;
}
# Initial capital letter
if( $wgCapitalLinks && $this->mInterwiki == '') {
$t = $wgContLang->ucfirst( $r );
} else {
$t = $r;
}
# Fill fields
$this->mDbkeyform = $t;
$this->mUrlform = wfUrlencode( $t );
$this->mTextform = str_replace( '_', ' ', $t );
wfProfileOut( $fname );
return true;
}
/**
* Get a Title object associated with the talk page of this article
* @return Title the object for the talk page
* @access public
*/
function getTalkPage() {
return Title::makeTitle( Namespace::getTalk( $this->getNamespace() ), $this->getDBkey() );
}
/**
* Get a title object associated with the subject page of this
* talk page
*
* @return Title the object for the subject page
* @access public
*/
function getSubjectPage() {
return Title::makeTitle( Namespace::getSubject( $this->getNamespace() ), $this->getDBkey() );
}
/**
* Get an array of Title objects linking to this Title
* - Also stores the IDs in the link cache.
*
* @param string $options may be FOR UPDATE
* @return array the Title objects linking here
* @access public
*/
function getLinksTo( $options = '' ) {
global $wgLinkCache;
$id = $this->getArticleID();
if ( $options ) {
$db =& wfGetDB( DB_MASTER );
} else {
$db =& wfGetDB( DB_SLAVE );
}
$cur = $db->tableName( 'cur' );
$links = $db->tableName( 'links' );
$sql = "SELECT cur_namespace,cur_title,cur_id FROM $cur,$links WHERE l_from=cur_id AND l_to={$id} $options";
$res = $db->query( $sql, 'Title::getLinksTo' );
$retVal = array();
if ( $db->numRows( $res ) ) {
while ( $row = $db->fetchObject( $res ) ) {
if ( $titleObj = Title::makeTitle( $row->cur_namespace, $row->cur_title ) ) {
$wgLinkCache->addGoodLink( $row->cur_id, $titleObj->getPrefixedDBkey() );
$retVal[] = $titleObj;
}
}
}
$db->freeResult( $res );
return $retVal;
}
/**
* Get an array of Title objects linking to this non-existent title.
* - Also stores the IDs in the link cache.
*
* @param string $options may be FOR UPDATE
* @return array the Title objects linking here
* @access public
*/
function getBrokenLinksTo( $options = '' ) {
global $wgLinkCache;
if ( $options ) {
$db =& wfGetDB( DB_MASTER );
} else {
$db =& wfGetDB( DB_SLAVE );
}
$cur = $db->tableName( 'cur' );
$brokenlinks = $db->tableName( 'brokenlinks' );
$encTitle = $db->strencode( $this->getPrefixedDBkey() );
$sql = "SELECT cur_namespace,cur_title,cur_id FROM $brokenlinks,$cur " .
"WHERE bl_from=cur_id AND bl_to='$encTitle' $options";
$res = $db->query( $sql, "Title::getBrokenLinksTo" );
$retVal = array();
if ( $db->numRows( $res ) ) {
while ( $row = $db->fetchObject( $res ) ) {
$titleObj = Title::makeTitle( $row->cur_namespace, $row->cur_title );
$wgLinkCache->addGoodLink( $row->cur_id, $titleObj->getPrefixedDBkey() );
$retVal[] = $titleObj;
}
}
$db->freeResult( $res );
return $retVal;
}
/**
* Get a list of URLs to purge from the Squid cache when this
* page changes
*
* @return array the URLs
* @access public
*/
function getSquidURLs() {
return array(
$this->getInternalURL(),
$this->getInternalURL( 'action=history' )
);
}
/**
* Move this page without authentication
* @param Title &$nt the new page Title
* @access public
*/
function moveNoAuth( &$nt ) {
return $this->moveTo( $nt, false );
}
/**
* Move a title to a new location
* @param Title &$nt the new title
* @param bool $auth indicates whether $wgUser's permissions
* should be checked
* @return mixed true on success, message name on failure
* @access public
*/
function moveTo( &$nt, $auth = true ) {
if( !$this or !$nt ) {
return 'badtitletext';
}
$fname = 'Title::move';
$oldid = $this->getArticleID();
$newid = $nt->getArticleID();
if ( strlen( $nt->getDBkey() ) < 1 ) {
return 'articleexists';
}
if ( ( ! Namespace::isMovable( $this->getNamespace() ) ) ||
( '' == $this->getDBkey() ) ||
( '' != $this->getInterwiki() ) ||
( !$oldid ) ||
( ! Namespace::isMovable( $nt->getNamespace() ) ) ||
( '' == $nt->getDBkey() ) ||
( '' != $nt->getInterwiki() ) ) {
return 'badarticleerror';
}
if ( $auth && ( !$this->userCanEdit() || !$nt->userCanEdit() ) ) {
return 'protectedpage';
}
# The move is allowed only if (1) the target doesn't exist, or
# (2) the target is a redirect to the source, and has no history
# (so we can undo bad moves right after they're done).
if ( 0 != $newid ) { # Target exists; check for validity
if ( ! $this->isValidMoveTarget( $nt ) ) {
return 'articleexists';
}
$this->moveOverExistingRedirect( $nt );
} else { # Target didn't exist, do normal move.
$this->moveToNewTitle( $nt, $newid );
}
# Fixing category links (those without piped 'alternate' names) to be sorted under the new title
$dbw =& wfGetDB( DB_MASTER );
$sql = "UPDATE categorylinks SET cl_sortkey=" . $dbw->addQuotes( $nt->getPrefixedText() ) .
" WHERE cl_from=" . $dbw->addQuotes( $this->getArticleID() ) .
" AND cl_sortkey=" . $dbw->addQuotes( $this->getPrefixedText() );
$dbw->query( $sql, 'SpecialMovepage::doSubmit' );
# Update watchlists
$oldnamespace = $this->getNamespace() & ~1;
$newnamespace = $nt->getNamespace() & ~1;
$oldtitle = $this->getDBkey();
$newtitle = $nt->getDBkey();
if( $oldnamespace != $newnamespace || $oldtitle != $newtitle ) {
WatchedItem::duplicateEntries( $this, $nt );
}
# Update search engine
$u = new SearchUpdate( $oldid, $nt->getPrefixedDBkey() );
$u->doUpdate();
$u = new SearchUpdate( $newid, $this->getPrefixedDBkey(), '' );
$u->doUpdate();
return true;
}
/**
* Move page to a title which is at present a redirect to the
* source page
*
* @param Title &$nt the page to move to, which should currently
* be a redirect
* @access private
*/
/* private */ function moveOverExistingRedirect( &$nt ) {
global $wgUser, $wgLinkCache, $wgUseSquid, $wgMwRedir;
$fname = 'Title::moveOverExistingRedirect';
$comment = wfMsg( '1movedto2', $this->getPrefixedText(), $nt->getPrefixedText() );
$now = wfTimestampNow();
$won = wfInvertTimestamp( $now );
$newid = $nt->getArticleID();
$oldid = $this->getArticleID();
$dbw =& wfGetDB( DB_MASTER );
$links = $dbw->tableName( 'links' );
# Change the name of the target page:
$dbw->update( 'cur',
/* SET */ array(
'cur_touched' => $dbw->timestamp($now),
'cur_namespace' => $nt->getNamespace(),
'cur_title' => $nt->getDBkey()
),
/* WHERE */ array( 'cur_id' => $oldid ),
$fname
);
$wgLinkCache->clearLink( $nt->getPrefixedDBkey() );
# Repurpose the old redirect. We don't save it to history since
# by definition if we've got here it's rather uninteresting.
$redirectText = $wgMwRedir->getSynonym( 0 ) . ' [[' . $nt->getPrefixedText() . "]]\n";
$dbw->update( 'cur',
/* SET */ array(
'cur_touched' => $dbw->timestamp($now),
'cur_timestamp' => $dbw->timestamp($now),
'inverse_timestamp' => $won,
'cur_namespace' => $this->getNamespace(),
'cur_title' => $this->getDBkey(),
'cur_text' => $wgMwRedir->getSynonym( 0 ) . ' [[' . $nt->getPrefixedText() . "]]\n",
'cur_comment' => $comment,
'cur_user' => $wgUser->getID(),
'cur_minor_edit' => 0,
'cur_counter' => 0,
'cur_restrictions' => '',
'cur_user_text' => $wgUser->getName(),
'cur_is_redirect' => 1,
'cur_is_new' => 1
),
/* WHERE */ array( 'cur_id' => $newid ),
$fname
);
$wgLinkCache->clearLink( $this->getPrefixedDBkey() );
# Fix the redundant names for the past revisions of the target page.
# The redirect should have no old revisions.
$dbw->update(
/* table */ 'old',
/* SET */ array(
'old_namespace' => $nt->getNamespace(),
'old_title' => $nt->getDBkey(),
),
/* WHERE */ array(
'old_namespace' => $this->getNamespace(),
'old_title' => $this->getDBkey(),
),
$fname
);
RecentChange::notifyMoveOverRedirect( $now, $this, $nt, $wgUser, $comment );
# Swap links
# Load titles and IDs
$linksToOld = $this->getLinksTo( 'FOR UPDATE' );
$linksToNew = $nt->getLinksTo( 'FOR UPDATE' );
# Delete them all
$sql = "DELETE FROM $links WHERE l_to=$oldid OR l_to=$newid";
$dbw->query( $sql, $fname );
# Reinsert
if ( count( $linksToOld ) || count( $linksToNew )) {
$sql = "INSERT INTO $links (l_from,l_to) VALUES ";
$first = true;
# Insert links to old title
foreach ( $linksToOld as $linkTitle ) {
if ( $first ) {
$first = false;
} else {
$sql .= ',';
}
$id = $linkTitle->getArticleID();
$sql .= "($id,$newid)";
}
# Insert links to new title
foreach ( $linksToNew as $linkTitle ) {
if ( $first ) {
$first = false;
} else {
$sql .= ',';
}
$id = $linkTitle->getArticleID();
$sql .= "($id, $oldid)";
}
$dbw->query( $sql, DB_MASTER, $fname );
}
# Now, we record the link from the redirect to the new title.
# It should have no other outgoing links...
$dbw->delete( 'links', array( 'l_from' => $newid ) );
$dbw->insert( 'links', array( 'l_from' => $newid, 'l_to' => $oldid ) );
# Clear linkscc
LinkCache::linksccClearLinksTo( $oldid );
LinkCache::linksccClearLinksTo( $newid );
# Purge squid
if ( $wgUseSquid ) {
$urls = array_merge( $nt->getSquidURLs(), $this->getSquidURLs() );
$u = new SquidUpdate( $urls );
$u->doUpdate();
}
}
/**
* Move page to non-existing title.
* @param Title &$nt the new Title
* @param int &$newid set to be the new article ID
* @access private
*/
/* private */ function moveToNewTitle( &$nt, &$newid ) {
global $wgUser, $wgLinkCache, $wgUseSquid;
$fname = 'MovePageForm::moveToNewTitle';
$comment = wfMsg( '1movedto2', $this->getPrefixedText(), $nt->getPrefixedText() );
$newid = $nt->getArticleID();
$oldid = $this->getArticleID();
$dbw =& wfGetDB( DB_MASTER );
$now = $dbw->timestamp();
$won = wfInvertTimestamp( wfTimestamp(TS_MW,$now) );
wfSeedRandom();
$rand = wfRandom();
# Rename cur entry
$dbw->update( 'cur',
/* SET */ array(
'cur_touched' => $now,
'cur_namespace' => $nt->getNamespace(),
'cur_title' => $nt->getDBkey()
),
/* WHERE */ array( 'cur_id' => $oldid ),
$fname
);
$wgLinkCache->clearLink( $nt->getPrefixedDBkey() );
# Insert redirect
$dbw->insert( 'cur', array(
'cur_id' => $dbw->nextSequenceValue('cur_cur_id_seq'),
'cur_namespace' => $this->getNamespace(),
'cur_title' => $this->getDBkey(),
'cur_comment' => $comment,
'cur_user' => $wgUser->getID(),
'cur_user_text' => $wgUser->getName(),
'cur_timestamp' => $now,
'inverse_timestamp' => $won,
'cur_touched' => $now,
'cur_is_redirect' => 1,
'cur_random' => $rand,
'cur_is_new' => 1,
'cur_text' => "#REDIRECT [[" . $nt->getPrefixedText() . "]]\n" ), $fname
);
$newid = $dbw->insertId();
$wgLinkCache->clearLink( $this->getPrefixedDBkey() );
# Rename old entries
$dbw->update(
/* table */ 'old',
/* SET */ array(
'old_namespace' => $nt->getNamespace(),
'old_title' => $nt->getDBkey()
),
/* WHERE */ array(
'old_namespace' => $this->getNamespace(),
'old_title' => $this->getDBkey()
), $fname
);
# Record in RC
RecentChange::notifyMoveToNew( $now, $this, $nt, $wgUser, $comment );
# Purge squid and linkscc as per article creation
Article::onArticleCreate( $nt );
# Any text links to the old title must be reassigned to the redirect
$dbw->update( 'links', array( 'l_to' => $newid ), array( 'l_to' => $oldid ), $fname );
LinkCache::linksccClearLinksTo( $oldid );
# Record the just-created redirect's linking to the page
$dbw->insert( 'links', array( 'l_from' => $newid, 'l_to' => $oldid ), $fname );
# Non-existent target may have had broken links to it; these must
# now be removed and made into good links.
$update = new LinksUpdate( $oldid, $nt->getPrefixedDBkey() );
$update->fixBrokenLinks();
# Purge old title from squid
# The new title, and links to the new title, are purged in Article::onArticleCreate()
$titles = $nt->getLinksTo();
if ( $wgUseSquid ) {
$urls = $this->getSquidURLs();
foreach ( $titles as $linkTitle ) {
$urls[] = $linkTitle->getInternalURL();
}
$u = new SquidUpdate( $urls );
$u->doUpdate();
}
}
/**
* Checks if $this can be moved to a given Title
* - Selects for update, so don't call it unless you mean business
*
* @param Title &$nt the new title to check
* @access public
*/
function isValidMoveTarget( $nt ) {
$fname = 'Title::isValidMoveTarget';
$dbw =& wfGetDB( DB_MASTER );
# Is it a redirect?
$id = $nt->getArticleID();
$obj = $dbw->selectRow( 'cur', array( 'cur_is_redirect','cur_text' ),
array( 'cur_id' => $id ), $fname, 'FOR UPDATE' );
if ( !$obj || 0 == $obj->cur_is_redirect ) {
# Not a redirect
return false;
}
# Does the redirect point to the source?
if ( preg_match( "/\\[\\[\\s*([^\\]\\|]*)]]/", $obj->cur_text, $m ) ) {
$redirTitle = Title::newFromText( $m[1] );
if( !is_object( $redirTitle ) ||
$redirTitle->getPrefixedDBkey() != $this->getPrefixedDBkey() ) {
return false;
}
}
# Does the article have a history?
$row = $dbw->selectRow( 'old', array( 'old_id' ),
array(
'old_namespace' => $nt->getNamespace(),
'old_title' => $nt->getDBkey()
), $fname, 'FOR UPDATE'
);
# Return true if there was no history
return $row === false;
}
/**
* Create a redirect; fails if the title already exists; does
* not notify RC
*
* @param Title $dest the destination of the redirect
* @param string $comment the comment string describing the move
* @return bool true on success
* @access public
*/
function createRedirect( $dest, $comment ) {
global $wgUser;
if ( $this->getArticleID() ) {
return false;
}
$fname = 'Title::createRedirect';
$dbw =& wfGetDB( DB_MASTER );
$now = wfTimestampNow();
$won = wfInvertTimestamp( $now );
$seqVal = $dbw->nextSequenceValue( 'cur_cur_id_seq' );
$dbw->insert( 'cur', array(
'cur_id' => $seqVal,
'cur_namespace' => $this->getNamespace(),
'cur_title' => $this->getDBkey(),
'cur_comment' => $comment,
'cur_user' => $wgUser->getID(),
'cur_user_text' => $wgUser->getName(),
'cur_timestamp' => $now,
'inverse_timestamp' => $won,
'cur_touched' => $now,
'cur_is_redirect' => 1,
'cur_is_new' => 1,
'cur_text' => "#REDIRECT [[" . $dest->getPrefixedText() . "]]\n"
), $fname );
$newid = $dbw->insertId();
$this->resetArticleID( $newid );
# Link table
if ( $dest->getArticleID() ) {
$dbw->insert( 'links',
array(
'l_to' => $dest->getArticleID(),
'l_from' => $newid
), $fname
);
} else {
$dbw->insert( 'brokenlinks',
array(
'bl_to' => $dest->getPrefixedDBkey(),
'bl_from' => $newid
), $fname
);
}
Article::onArticleCreate( $this );
return true;
}
/**
* Get categories to which this Title belongs and return an array of
* categories' names.
*
* @return array an array of parents in the form:
* $parent => $currentarticle
* @access public
*/
function getParentCategories() {
global $wgContLang,$wgUser;
$titlekey = $this->getArticleId();
$sk =& $wgUser->getSkin();
$parents = array();
$dbr =& wfGetDB( DB_SLAVE );
$cur = $dbr->tableName( 'cur' );
$categorylinks = $dbr->tableName( 'categorylinks' );
# NEW SQL
$sql = "SELECT * FROM categorylinks"
." WHERE cl_from='$titlekey'"
." AND cl_from <> '0'"
." ORDER BY cl_sortkey";
$res = $dbr->query ( $sql ) ;
if($dbr->numRows($res) > 0) {
while ( $x = $dbr->fetchObject ( $res ) )
//$data[] = Title::newFromText($wgContLang->getNSText ( NS_CATEGORY ).':'.$x->cl_to);
$data[$wgContLang->getNSText ( NS_CATEGORY ).':'.$x->cl_to] = $this->getFullText();
$dbr->freeResult ( $res ) ;
} else {
$data = '';
}
return $data;
}
/**
* Go through all parent categories of this Title
* @return array
* @access public
*/
function getCategorieBrowser() {
$parents = $this->getParentCategories();
if($parents != '') {
foreach($parents as $parent => $current)
{
$nt = Title::newFromText($parent);
$stack[$parent] = $nt->getCategorieBrowser();
}
return $stack;
} else {
return array();
}
}
/**
* Get an associative array for selecting this title from
* the "cur" table
*
* @return array
* @access public
*/
function curCond() {
return array( 'cur_namespace' => $this->mNamespace, 'cur_title' => $this->mDbkeyform );
}
/**
* Get an associative array for selecting this title from the
* "old" table
*
* @return array
* @access public
*/
function oldCond() {
return array( 'old_namespace' => $this->mNamespace, 'old_title' => $this->mDbkeyform );
}
/**
* Get the revision ID of the previous revision
*
* @param integer $revision Revision ID. Get the revision that was before this one.
* @return interger $oldrevision|false
*/
function getPreviousRevisionID( $revision ) {
$dbr =& wfGetDB( DB_SLAVE );
return $dbr->selectField( 'old', 'old_id',
'old_title=' . $dbr->addQuotes( $this->getDBkey() ) .
' AND old_namespace=' . IntVal( $this->getNamespace() ) .
' AND old_id<' . IntVal( $revision ) . ' ORDER BY old_id DESC' );
}
/**
* Get the revision ID of the next revision
*
* @param integer $revision Revision ID. Get the revision that was after this one.
* @return interger $oldrevision|false
*/
function getNextRevisionID( $revision ) {
$dbr =& wfGetDB( DB_SLAVE );
return $dbr->selectField( 'old', 'old_id',
'old_title=' . $dbr->addQuotes( $this->getDBkey() ) .
' AND old_namespace=' . IntVal( $this->getNamespace() ) .
' AND old_id>' . IntVal( $revision ) . ' ORDER BY old_id' );
}
}
?>