9 require_once( 'normal/UtfNormal.php' );
11 define ( 'GAID_FOR_UPDATE', 1 );
13 # Title::newFromTitle maintains a cache to avoid
14 # expensive re-normalization of commonly used titles.
15 # On a batch operation this can become a memory leak
16 # if not bounded. After hitting this many titles,
18 define( 'MW_TITLECACHE_MAX', 1000 );
22 * - Represents a title, which may contain an interwiki designation or namespace
23 * - Can fetch various kinds of data from the database, albeit inefficiently.
29 * Static cache variables
31 static private $titleCache=array();
32 static private $interwikiCache=array();
36 * All member variables should be considered private
37 * Please use the accessor functions
44 var $mTextform; # Text form (spaces not underscores) of the main part
45 var $mUrlform; # URL-encoded form of the main part
46 var $mDbkeyform; # Main part with underscores
47 var $mNamespace; # Namespace index, i.e. one of the NS_xxxx constants
48 var $mInterwiki; # Interwiki prefix (or null string)
49 var $mFragment; # Title fragment (i.e. the bit after the #)
50 var $mArticleID; # Article ID, fetched from the link cache on demand
51 var $mLatestID; # ID of most recent revision
52 var $mRestrictions; # Array of groups allowed to edit this article
53 # Only null or "sysop" are supported
54 var $mRestrictionsLoaded; # Boolean for initialisation on demand
55 var $mPrefixedText; # Text form including namespace/interwiki, initialised on demand
56 var $mDefaultNamespace; # Namespace index when there is no namespace
57 # Zero except in {{transclusion}} tags
58 var $mWatched; # Is $wgUser watching this page? NULL if unfilled, accessed through userIsWatching()
66 /* private */ function Title() {
67 $this->mInterwiki
= $this->mUrlform
=
68 $this->mTextform
= $this->mDbkeyform
= '';
69 $this->mArticleID
= -1;
70 $this->mNamespace
= NS_MAIN
;
71 $this->mRestrictionsLoaded
= false;
72 $this->mRestrictions
= array();
73 # Dont change the following, NS_MAIN is hardcoded in several place
75 $this->mDefaultNamespace
= NS_MAIN
;
76 $this->mWatched
= NULL;
77 $this->mLatestID
= false;
81 * Create a new Title from a prefixed DB key
82 * @param string $key The database key, which has underscores
83 * instead of spaces, possibly including namespace and
85 * @return Title the new object, or NULL on an error
89 /* static */ function newFromDBkey( $key ) {
91 $t->mDbkeyform
= $key;
92 if( $t->secureAndSplit() )
99 * Create a new Title from text, such as what one would
100 * find in a link. Decodes any HTML entities in the text.
102 * @param string $text the link text; spaces, prefixes,
103 * and an initial ':' indicating the main namespace
105 * @param int $defaultNamespace the namespace to use if
106 * none is specified by a prefix
107 * @return Title the new object, or NULL on an error
111 public static function newFromText( $text, $defaultNamespace = NS_MAIN
) {
112 if( is_object( $text ) ) {
113 throw new MWException( 'Title::newFromText given an object' );
117 * Wiki pages often contain multiple links to the same page.
118 * Title normalization and parsing can become expensive on
119 * pages with many links, so we can save a little time by
122 * In theory these are value objects and won't get changed...
124 if( $defaultNamespace == NS_MAIN
&& isset( Title
::$titleCache[$text] ) ) {
125 return Title
::$titleCache[$text];
129 * Convert things like é ā or 〗 into real text...
131 $filteredText = Sanitizer
::decodeCharReferences( $text );
134 $t->mDbkeyform
= str_replace( ' ', '_', $filteredText );
135 $t->mDefaultNamespace
= $defaultNamespace;
137 static $cachedcount = 0 ;
138 if( $t->secureAndSplit() ) {
139 if( $defaultNamespace == NS_MAIN
) {
140 if( $cachedcount >= MW_TITLECACHE_MAX
) {
141 # Avoid memory leaks on mass operations...
142 Title
::$titleCache = array();
146 Title
::$titleCache[$text] =& $t;
156 * Create a new Title from URL-encoded text. Ensures that
157 * the given title's length does not exceed the maximum.
158 * @param string $url the title, as might be taken from a URL
159 * @return Title the new object, or NULL on an error
163 public static function newFromURL( $url ) {
164 global $wgLegalTitleChars;
167 # For compatibility with old buggy URLs. "+" is usually not valid in titles,
168 # but some URLs used it as a space replacement and they still come
169 # from some external search tools.
170 if ( strpos( $wgLegalTitleChars, '+' ) === false ) {
171 $url = str_replace( '+', ' ', $url );
174 $t->mDbkeyform
= str_replace( ' ', '_', $url );
175 if( $t->secureAndSplit() ) {
183 * Create a new Title from an article ID
185 * @todo This is inefficiently implemented, the page row is requested
186 * but not used for anything else
188 * @param int $id the page_id corresponding to the Title to create
189 * @return Title the new object, or NULL on an error
193 function newFromID( $id ) {
194 $fname = 'Title::newFromID';
195 $dbr =& wfGetDB( DB_SLAVE
);
196 $row = $dbr->selectRow( 'page', array( 'page_namespace', 'page_title' ),
197 array( 'page_id' => $id ), $fname );
198 if ( $row !== false ) {
199 $title = Title
::makeTitle( $row->page_namespace
, $row->page_title
);
207 * Make an array of titles from an array of IDs
209 function newFromIDs( $ids ) {
210 $dbr =& wfGetDB( DB_SLAVE
);
211 $res = $dbr->select( 'page', array( 'page_namespace', 'page_title' ),
212 'page_id IN (' . $dbr->makeList( $ids ) . ')', __METHOD__
);
215 while ( $row = $dbr->fetchObject( $res ) ) {
216 $titles[] = Title
::makeTitle( $row->page_namespace
, $row->page_title
);
222 * Create a new Title from a namespace index and a DB key.
223 * It's assumed that $ns and $title are *valid*, for instance when
224 * they came directly from the database or a special page name.
225 * For convenience, spaces are converted to underscores so that
226 * eg user_text fields can be used directly.
228 * @param int $ns the namespace of the article
229 * @param string $title the unprefixed database key form
230 * @return Title the new object
234 public static function &makeTitle( $ns, $title ) {
238 $t->mNamespace
= intval( $ns );
239 $t->mDbkeyform
= str_replace( ' ', '_', $title );
240 $t->mArticleID
= ( $ns >= 0 ) ?
-1 : 0;
241 $t->mUrlform
= wfUrlencode( $t->mDbkeyform
);
242 $t->mTextform
= str_replace( '_', ' ', $title );
247 * Create a new Title from a namespace index and a DB key.
248 * The parameters will be checked for validity, which is a bit slower
249 * than makeTitle() but safer for user-provided data.
251 * @param int $ns the namespace of the article
252 * @param string $title the database key form
253 * @return Title the new object, or NULL on an error
257 public static function makeTitleSafe( $ns, $title ) {
259 $t->mDbkeyform
= Title
::makeName( $ns, $title );
260 if( $t->secureAndSplit() ) {
268 * Create a new Title for the Main Page
271 * @return Title the new object
274 public static function newMainPage() {
275 return Title
::newFromText( wfMsgForContent( 'mainpage' ) );
279 * Create a new Title for a redirect
280 * @param string $text the redirect title text
281 * @return Title the new object, or NULL if the text is not a
286 public static function newFromRedirect( $text ) {
287 $mwRedir = MagicWord
::get( 'redirect' );
289 if ( $mwRedir->matchStart( $text ) ) {
291 if ( preg_match( '/\[{2}(.*?)(?:\||\]{2})/', $text, $m ) ) {
292 # categories are escaped using : for example one can enter:
293 # #REDIRECT [[:Category:Music]]. Need to remove it.
294 if ( substr($m[1],0,1) == ':') {
295 # We don't want to keep the ':'
296 $m[1] = substr( $m[1], 1 );
299 $rt = Title
::newFromText( $m[1] );
300 # Disallow redirects to Special:Userlogout
301 if ( !is_null($rt) && $rt->isSpecial( 'Userlogout' ) ) {
309 #----------------------------------------------------------------------------
311 #----------------------------------------------------------------------------
314 * Get the prefixed DB key associated with an ID
315 * @param int $id the page_id of the article
316 * @return Title an object representing the article, or NULL
317 * if no such article was found
321 function nameOf( $id ) {
322 $fname = 'Title::nameOf';
323 $dbr =& wfGetDB( DB_SLAVE
);
325 $s = $dbr->selectRow( 'page', array( 'page_namespace','page_title' ), array( 'page_id' => $id ), $fname );
326 if ( $s === false ) { return NULL; }
328 $n = Title
::makeName( $s->page_namespace
, $s->page_title
);
333 * Get a regex character class describing the legal characters in a link
334 * @return string the list of characters, not delimited
338 public static function legalChars() {
339 global $wgLegalTitleChars;
340 return $wgLegalTitleChars;
344 * Get a string representation of a title suitable for
345 * including in a search index
347 * @param int $ns a namespace index
348 * @param string $title text-form main part
349 * @return string a stripped-down title string ready for the
352 /* static */ function indexTitle( $ns, $title ) {
355 $lc = SearchEngine
::legalSearchChars() . '&#;';
356 $t = $wgContLang->stripForSearch( $title );
357 $t = preg_replace( "/[^{$lc}]+/", ' ', $t );
358 $t = $wgContLang->lc( $t );
361 $t = preg_replace( "/([{$lc}]+)'s( |$)/", "\\1 \\1's ", $t );
362 $t = preg_replace( "/([{$lc}]+)s'( |$)/", "\\1s ", $t );
364 $t = preg_replace( "/\\s+/", ' ', $t );
366 if ( $ns == NS_IMAGE
) {
367 $t = preg_replace( "/ (png|gif|jpg|jpeg|ogg)$/", "", $t );
373 * Make a prefixed DB key from a DB key and a namespace index
374 * @param int $ns numerical representation of the namespace
375 * @param string $title the DB key form the title
376 * @return string the prefixed form of the title
378 public static function makeName( $ns, $title ) {
381 $n = $wgContLang->getNsText( $ns );
382 return $n == '' ?
$title : "$n:$title";
386 * Returns the URL associated with an interwiki prefix
387 * @param string $key the interwiki prefix (e.g. "MeatBall")
388 * @return the associated URL, containing "$1", which should be
389 * replaced by an article title
393 function getInterwikiLink( $key ) {
394 global $wgMemc, $wgInterwikiExpiry;
395 global $wgInterwikiCache, $wgContLang;
396 $fname = 'Title::getInterwikiLink';
398 $key = $wgContLang->lc( $key );
400 $k = wfMemcKey( 'interwiki', $key );
401 if( array_key_exists( $k, Title
::$interwikiCache ) ) {
402 return Title
::$interwikiCache[$k]->iw_url
;
405 if ($wgInterwikiCache) {
406 return Title
::getInterwikiCached( $key );
409 $s = $wgMemc->get( $k );
410 # Ignore old keys with no iw_local
411 if( $s && isset( $s->iw_local
) && isset($s->iw_trans
)) {
412 Title
::$interwikiCache[$k] = $s;
416 $dbr =& wfGetDB( DB_SLAVE
);
417 $res = $dbr->select( 'interwiki',
418 array( 'iw_url', 'iw_local', 'iw_trans' ),
419 array( 'iw_prefix' => $key ), $fname );
424 $s = $dbr->fetchObject( $res );
426 # Cache non-existence: create a blank object and save it to memcached
432 $wgMemc->set( $k, $s, $wgInterwikiExpiry );
433 Title
::$interwikiCache[$k] = $s;
439 * Fetch interwiki prefix data from local cache in constant database
441 * More logic is explained in DefaultSettings
443 * @return string URL of interwiki site
446 function getInterwikiCached( $key ) {
447 global $wgInterwikiCache, $wgInterwikiScopes, $wgInterwikiFallbackSite;
451 $db=dba_open($wgInterwikiCache,'r','cdb');
452 /* Resolve site name */
453 if ($wgInterwikiScopes>=3 and !$site) {
454 $site = dba_fetch('__sites:' . wfWikiID(), $db);
456 $site = $wgInterwikiFallbackSite;
458 $value = dba_fetch( wfMemcKey( $key ), $db);
459 if ($value=='' and $wgInterwikiScopes>=3) {
461 $value = dba_fetch("_{$site}:{$key}", $db);
463 if ($value=='' and $wgInterwikiScopes>=2) {
465 $value = dba_fetch("__global:{$key}", $db);
474 list($local,$url)=explode(' ',$value,2);
476 $s->iw_local
=(int)$local;
478 Title
::$interwikiCache[wfMemcKey( 'interwiki', $key )] = $s;
482 * Determine whether the object refers to a page within
485 * @return bool TRUE if this is an in-project interwiki link
486 * or a wikilink, FALSE otherwise
490 if ( $this->mInterwiki
!= '' ) {
491 # Make sure key is loaded into cache
492 $this->getInterwikiLink( $this->mInterwiki
);
493 $k = wfMemcKey( 'interwiki', $this->mInterwiki
);
494 return (bool)(Title
::$interwikiCache[$k]->iw_local
);
501 * Determine whether the object refers to a page within
502 * this project and is transcludable.
504 * @return bool TRUE if this is transcludable
508 if ($this->mInterwiki
== '')
510 # Make sure key is loaded into cache
511 $this->getInterwikiLink( $this->mInterwiki
);
512 $k = wfMemcKey( 'interwiki', $this->mInterwiki
);
513 return (bool)(Title
::$interwikiCache[$k]->iw_trans
);
517 * Update the page_touched field for an array of title objects
518 * @todo Inefficient unless the IDs are already loaded into the
520 * @param array $titles an array of Title objects to be touched
521 * @param string $timestamp the timestamp to use instead of the
522 * default current time
526 function touchArray( $titles, $timestamp = '' ) {
528 if ( count( $titles ) == 0 ) {
531 $dbw =& wfGetDB( DB_MASTER
);
532 if ( $timestamp == '' ) {
533 $timestamp = $dbw->timestamp();
536 $page = $dbw->tableName( 'page' );
537 $sql = "UPDATE $page SET page_touched='{$timestamp}' WHERE page_id IN (";
540 foreach ( $titles as $title ) {
541 if ( $wgUseFileCache ) {
542 $cm = new HTMLFileCache($title);
543 @unlink($cm->fileCacheName());
550 $sql .= $title->getArticleID();
554 $dbw->query( $sql, 'Title::touchArray' );
557 // hack hack hack -- brion 2005-07-11. this was unfriendly to db.
558 // do them in small chunks:
559 $fname = 'Title::touchArray';
560 foreach( $titles as $title ) {
561 $dbw->update( 'page',
562 array( 'page_touched' => $timestamp ),
564 'page_namespace' => $title->getNamespace(),
565 'page_title' => $title->getDBkey() ),
571 * Escape a text fragment, say from a link, for a URL
573 static function escapeFragmentForURL( $fragment ) {
574 $fragment = str_replace( ' ', '_', $fragment );
575 $fragment = urlencode( Sanitizer
::decodeCharReferences( $fragment ) );
576 $replaceArray = array(
580 return strtr( $fragment, $replaceArray );
583 #----------------------------------------------------------------------------
585 #----------------------------------------------------------------------------
587 /** Simple accessors */
589 * Get the text form (spaces not underscores) of the main part
593 function getText() { return $this->mTextform
; }
595 * Get the URL-encoded form of the main part
599 function getPartialURL() { return $this->mUrlform
; }
601 * Get the main part with underscores
605 function getDBkey() { return $this->mDbkeyform
; }
607 * Get the namespace index, i.e. one of the NS_xxxx constants
611 function getNamespace() { return $this->mNamespace
; }
613 * Get the namespace text
617 function getNsText() {
619 return $wgContLang->getNsText( $this->mNamespace
);
622 * Get the namespace text of the subject (rather than talk) page
626 function getSubjectNsText() {
628 return $wgContLang->getNsText( Namespace::getSubject( $this->mNamespace
) );
632 * Get the namespace text of the talk page
635 function getTalkNsText() {
637 return( $wgContLang->getNsText( Namespace::getTalk( $this->mNamespace
) ) );
641 * Could this title have a corresponding talk page?
645 return( Namespace::canTalk( $this->mNamespace
) );
649 * Get the interwiki prefix (or null string)
653 function getInterwiki() { return $this->mInterwiki
; }
655 * Get the Title fragment (i.e. the bit after the #) in text form
659 function getFragment() { return $this->mFragment
; }
661 * Get the fragment in URL form, including the "#" character if there is one
666 function getFragmentForURL() {
667 if ( $this->mFragment
== '' ) {
670 return '#' . Title
::escapeFragmentForURL( $this->mFragment
);
674 * Get the default namespace index, for when there is no namespace
678 function getDefaultNamespace() { return $this->mDefaultNamespace
; }
681 * Get title for search index
682 * @return string a stripped-down title string ready for the
685 function getIndexTitle() {
686 return Title
::indexTitle( $this->mNamespace
, $this->mTextform
);
690 * Get the prefixed database key form
691 * @return string the prefixed title, with underscores and
692 * any interwiki and namespace prefixes
695 function getPrefixedDBkey() {
696 $s = $this->prefix( $this->mDbkeyform
);
697 $s = str_replace( ' ', '_', $s );
702 * Get the prefixed title with spaces.
703 * This is the form usually used for display
704 * @return string the prefixed title, with spaces
707 function getPrefixedText() {
708 if ( empty( $this->mPrefixedText
) ) { // FIXME: bad usage of empty() ?
709 $s = $this->prefix( $this->mTextform
);
710 $s = str_replace( '_', ' ', $s );
711 $this->mPrefixedText
= $s;
713 return $this->mPrefixedText
;
717 * Get the prefixed title with spaces, plus any fragment
718 * (part beginning with '#')
719 * @return string the prefixed title, with spaces and
720 * the fragment, including '#'
723 function getFullText() {
724 $text = $this->getPrefixedText();
725 if( '' != $this->mFragment
) {
726 $text .= '#' . $this->mFragment
;
732 * Get the base name, i.e. the leftmost parts before the /
733 * @return string Base name
735 function getBaseText() {
736 global $wgNamespacesWithSubpages;
737 if( isset( $wgNamespacesWithSubpages[ $this->mNamespace
] ) && $wgNamespacesWithSubpages[ $this->mNamespace
] ) {
738 $parts = explode( '/', $this->getText() );
739 # Don't discard the real title if there's no subpage involved
740 if( count( $parts ) > 1 )
741 unset( $parts[ count( $parts ) - 1 ] );
742 return implode( '/', $parts );
744 return $this->getText();
749 * Get the lowest-level subpage name, i.e. the rightmost part after /
750 * @return string Subpage name
752 function getSubpageText() {
753 global $wgNamespacesWithSubpages;
754 if( isset( $wgNamespacesWithSubpages[ $this->mNamespace
] ) && $wgNamespacesWithSubpages[ $this->mNamespace
] ) {
755 $parts = explode( '/', $this->mTextform
);
756 return( $parts[ count( $parts ) - 1 ] );
758 return( $this->mTextform
);
763 * Get a URL-encoded form of the subpage text
764 * @return string URL-encoded subpage name
766 function getSubpageUrlForm() {
767 $text = $this->getSubpageText();
768 $text = wfUrlencode( str_replace( ' ', '_', $text ) );
769 $text = str_replace( '%28', '(', str_replace( '%29', ')', $text ) ); # Clean up the URL; per below, this might not be safe
774 * Get a URL-encoded title (not an actual URL) including interwiki
775 * @return string the URL-encoded form
778 function getPrefixedURL() {
779 $s = $this->prefix( $this->mDbkeyform
);
780 $s = str_replace( ' ', '_', $s );
782 $s = wfUrlencode ( $s ) ;
784 # Cleaning up URL to make it look nice -- is this safe?
785 $s = str_replace( '%28', '(', $s );
786 $s = str_replace( '%29', ')', $s );
792 * Get a real URL referring to this title, with interwiki link and
795 * @param string $query an optional query string, not used
796 * for interwiki links
797 * @param string $variant language variant of url (for sr, zh..)
798 * @return string the URL
801 function getFullURL( $query = '', $variant = false ) {
802 global $wgContLang, $wgServer, $wgRequest;
804 if ( '' == $this->mInterwiki
) {
805 $url = $this->getLocalUrl( $query, $variant );
807 // Ugly quick hack to avoid duplicate prefixes (bug 4571 etc)
808 // Correct fix would be to move the prepending elsewhere.
809 if ($wgRequest->getVal('action') != 'render') {
810 $url = $wgServer . $url;
813 $baseUrl = $this->getInterwikiLink( $this->mInterwiki
);
815 $namespace = $wgContLang->getNsText( $this->mNamespace
);
816 if ( '' != $namespace ) {
817 # Can this actually happen? Interwikis shouldn't be parsed.
820 $url = str_replace( '$1', $namespace . $this->mUrlform
, $baseUrl );
822 if( false === strpos( $url, '?' ) ) {
831 # Finally, add the fragment.
832 $url .= $this->getFragmentForURL();
834 wfRunHooks( 'GetFullURL', array( &$this, &$url, $query ) );
839 * Get a URL with no fragment or server name. If this page is generated
840 * with action=render, $wgServer is prepended.
841 * @param string $query an optional query string; if not specified,
842 * $wgArticlePath will be used.
843 * @param string $variant language variant of url (for sr, zh..)
844 * @return string the URL
847 function getLocalURL( $query = '', $variant = false ) {
848 global $wgArticlePath, $wgScript, $wgServer, $wgRequest;
849 global $wgVariantArticlePath, $wgContLang, $wgUser;
851 // internal links should point to same variant as current page (only anonymous users)
852 if($variant == false && $wgContLang->hasVariants() && !$wgUser->isLoggedIn()){
853 $pref = $wgContLang->getPreferredVariant(false);
854 if($pref != $wgContLang->getCode())
858 if ( $this->isExternal() ) {
859 $url = $this->getFullURL();
861 // This is currently only used for edit section links in the
862 // context of interwiki transclusion. In theory we should
863 // append the query to the end of any existing query string,
864 // but interwiki transclusion is already broken in that case.
868 $dbkey = wfUrlencode( $this->getPrefixedDBkey() );
869 if ( $query == '' ) {
870 if($variant!=false && $wgContLang->hasVariants()){
871 if($wgVariantArticlePath==false)
872 $variantArticlePath = "$wgScript?title=$1&variant=$2"; // default
874 $variantArticlePath = $wgVariantArticlePath;
876 $url = str_replace( '$2', urlencode( $variant ), $variantArticlePath );
877 $url = str_replace( '$1', $dbkey, $url );
881 $url = str_replace( '$1', $dbkey, $wgArticlePath );
883 global $wgActionPaths;
886 if( !empty( $wgActionPaths ) &&
887 preg_match( '/^(.*&|)action=([^&]*)(&(.*)|)$/', $query, $matches ) )
889 $action = urldecode( $matches[2] );
890 if( isset( $wgActionPaths[$action] ) ) {
891 $query = $matches[1];
892 if( isset( $matches[4] ) ) $query .= $matches[4];
893 $url = str_replace( '$1', $dbkey, $wgActionPaths[$action] );
894 if( $query != '' ) $url .= '?' . $query;
897 if ( $url === false ) {
898 if ( $query == '-' ) {
901 $url = "{$wgScript}?title={$dbkey}&{$query}";
905 // FIXME: this causes breakage in various places when we
906 // actually expected a local URL and end up with dupe prefixes.
907 if ($wgRequest->getVal('action') == 'render') {
908 $url = $wgServer . $url;
911 wfRunHooks( 'GetLocalURL', array( &$this, &$url, $query ) );
916 * Get an HTML-escaped version of the URL form, suitable for
917 * using in a link, without a server name or fragment
918 * @param string $query an optional query string
919 * @return string the URL
922 function escapeLocalURL( $query = '' ) {
923 return htmlspecialchars( $this->getLocalURL( $query ) );
927 * Get an HTML-escaped version of the URL form, suitable for
928 * using in a link, including the server name and fragment
930 * @return string the URL
931 * @param string $query an optional query string
934 function escapeFullURL( $query = '' ) {
935 return htmlspecialchars( $this->getFullURL( $query ) );
939 * Get the URL form for an internal link.
940 * - Used in various Squid-related code, in case we have a different
941 * internal hostname for the server from the exposed one.
943 * @param string $query an optional query string
944 * @param string $variant language variant of url (for sr, zh..)
945 * @return string the URL
948 function getInternalURL( $query = '', $variant = false ) {
949 global $wgInternalServer;
950 $url = $wgInternalServer . $this->getLocalURL( $query, $variant );
951 wfRunHooks( 'GetInternalURL', array( &$this, &$url, $query ) );
956 * Get the edit URL for this Title
957 * @return string the URL, or a null string if this is an
961 function getEditURL() {
962 if ( '' != $this->mInterwiki
) { return ''; }
963 $s = $this->getLocalURL( 'action=edit' );
969 * Get the HTML-escaped displayable text form.
970 * Used for the title field in <a> tags.
971 * @return string the text, including any prefixes
974 function getEscapedText() {
975 return htmlspecialchars( $this->getPrefixedText() );
979 * Is this Title interwiki?
983 function isExternal() { return ( '' != $this->mInterwiki
); }
986 * Is this page "semi-protected" - the *only* protection is autoconfirm?
988 * @param string Action to check (default: edit)
991 function isSemiProtected( $action = 'edit' ) {
992 if( $this->exists() ) {
993 foreach( $this->getRestrictions( $action ) as $restriction ) {
994 if( strtolower( $restriction ) != 'autoconfirmed' )
999 # If it doesn't exist, it can't be protected
1005 * Does the title correspond to a protected article?
1006 * @param string $what the action the page is protected from,
1007 * by default checks move and edit
1011 function isProtected( $action = '' ) {
1012 global $wgRestrictionLevels;
1013 if ( NS_SPECIAL
== $this->mNamespace
) { return true; }
1015 if( $action == 'edit' ||
$action == '' ) {
1016 $r = $this->getRestrictions( 'edit' );
1017 foreach( $wgRestrictionLevels as $level ) {
1018 if( in_array( $level, $r ) && $level != '' ) {
1024 if( $action == 'move' ||
$action == '' ) {
1025 $r = $this->getRestrictions( 'move' );
1026 foreach( $wgRestrictionLevels as $level ) {
1027 if( in_array( $level, $r ) && $level != '' ) {
1037 * Is $wgUser is watching this page?
1041 function userIsWatching() {
1044 if ( is_null( $this->mWatched
) ) {
1045 if ( NS_SPECIAL
== $this->mNamespace ||
!$wgUser->isLoggedIn()) {
1046 $this->mWatched
= false;
1048 $this->mWatched
= $wgUser->isWatched( $this );
1051 return $this->mWatched
;
1055 * Can $wgUser perform $action this page?
1056 * @param string $action action that permission needs to be checked for
1060 function userCan($action) {
1061 $fname = 'Title::userCan';
1062 wfProfileIn( $fname );
1067 wfRunHooks( 'userCan', array( &$this, &$wgUser, $action, &$result ) );
1068 if ( $result !== null ) {
1069 wfProfileOut( $fname );
1073 if( NS_SPECIAL
== $this->mNamespace
) {
1074 wfProfileOut( $fname );
1077 // XXX: This is the code that prevents unprotecting a page in NS_MEDIAWIKI
1078 // from taking effect -ævar
1079 if( NS_MEDIAWIKI
== $this->mNamespace
&&
1080 !$wgUser->isAllowed('editinterface') ) {
1081 wfProfileOut( $fname );
1085 if( $this->mDbkeyform
== '_' ) {
1086 # FIXME: Is this necessary? Shouldn't be allowed anyway...
1087 wfProfileOut( $fname );
1091 # protect css/js subpages of user pages
1092 # XXX: this might be better using restrictions
1093 # XXX: Find a way to work around the php bug that prevents using $this->userCanEditCssJsSubpage() from working
1094 if( $this->isCssJsSubpage()
1095 && !$wgUser->isAllowed('editinterface')
1096 && !preg_match('/^'.preg_quote($wgUser->getName(), '/').'\//', $this->mTextform
) ) {
1097 wfProfileOut( $fname );
1101 foreach( $this->getRestrictions($action) as $right ) {
1102 // Backwards compatibility, rewrite sysop -> protect
1103 if ( $right == 'sysop' ) {
1106 if( '' != $right && !$wgUser->isAllowed( $right ) ) {
1107 wfProfileOut( $fname );
1112 if( $action == 'move' &&
1113 !( $this->isMovable() && $wgUser->isAllowed( 'move' ) ) ) {
1114 wfProfileOut( $fname );
1118 if( $action == 'create' ) {
1119 if( ( $this->isTalkPage() && !$wgUser->isAllowed( 'createtalk' ) ) ||
1120 ( !$this->isTalkPage() && !$wgUser->isAllowed( 'createpage' ) ) ) {
1121 wfProfileOut( $fname );
1126 wfProfileOut( $fname );
1131 * Can $wgUser edit this page?
1135 function userCanEdit() {
1136 return $this->userCan('edit');
1140 * Can $wgUser create this page?
1144 function userCanCreate() {
1145 return $this->userCan('create');
1149 * Can $wgUser move this page?
1153 function userCanMove() {
1154 return $this->userCan('move');
1158 * Would anybody with sufficient privileges be able to move this page?
1159 * Some pages just aren't movable.
1164 function isMovable() {
1165 return Namespace::isMovable( $this->getNamespace() )
1166 && $this->getInterwiki() == '';
1170 * Can $wgUser read this page?
1174 function userCanRead() {
1178 wfRunHooks( 'userCan', array( &$this, &$wgUser, 'read', &$result ) );
1179 if ( $result !== null ) {
1183 if( $wgUser->isAllowed('read') ) {
1186 global $wgWhitelistRead;
1189 * Always grant access to the login page.
1190 * Even anons need to be able to log in.
1192 if( $this->isSpecial( 'Userlogin' ) ||
$this->isSpecial( 'Resetpass' ) ) {
1196 /** some pages are explicitly allowed */
1197 $name = $this->getPrefixedText();
1198 if( $wgWhitelistRead && in_array( $name, $wgWhitelistRead ) ) {
1202 # Compatibility with old settings
1203 if( $wgWhitelistRead && $this->getNamespace() == NS_MAIN
) {
1204 if( in_array( ':' . $name, $wgWhitelistRead ) ) {
1213 * Is this a talk page of some sort?
1217 function isTalkPage() {
1218 return Namespace::isTalk( $this->getNamespace() );
1222 * Is this a subpage?
1226 function isSubpage() {
1227 global $wgNamespacesWithSubpages;
1229 if( isset( $wgNamespacesWithSubpages[ $this->mNamespace
] ) ) {
1230 return ( strpos( $this->getText(), '/' ) !== false && $wgNamespacesWithSubpages[ $this->mNamespace
] == true );
1237 * Is this a .css or .js subpage of a user page?
1241 function isCssJsSubpage() {
1242 return ( NS_USER
== $this->mNamespace
and preg_match("/\\/.*\\.(css|js)$/", $this->mTextform
) );
1245 * Is this a *valid* .css or .js subpage of a user page?
1246 * Check that the corresponding skin exists
1248 function isValidCssJsSubpage() {
1249 if ( $this->isCssJsSubpage() ) {
1250 $skinNames = Skin
::getSkinNames();
1251 return array_key_exists( $this->getSkinFromCssJsSubpage(), $skinNames );
1257 * Trim down a .css or .js subpage title to get the corresponding skin name
1259 function getSkinFromCssJsSubpage() {
1260 $subpage = explode( '/', $this->mTextform
);
1261 $subpage = $subpage[ count( $subpage ) - 1 ];
1262 return( str_replace( array( '.css', '.js' ), array( '', '' ), $subpage ) );
1265 * Is this a .css subpage of a user page?
1269 function isCssSubpage() {
1270 return ( NS_USER
== $this->mNamespace
and preg_match("/\\/.*\\.css$/", $this->mTextform
) );
1273 * Is this a .js subpage of a user page?
1277 function isJsSubpage() {
1278 return ( NS_USER
== $this->mNamespace
and preg_match("/\\/.*\\.js$/", $this->mTextform
) );
1281 * Protect css/js subpages of user pages: can $wgUser edit
1285 * @todo XXX: this might be better using restrictions
1288 function userCanEditCssJsSubpage() {
1290 return ( $wgUser->isAllowed('editinterface') or preg_match('/^'.preg_quote($wgUser->getName(), '/').'\//', $this->mTextform
) );
1294 * Loads a string into mRestrictions array
1295 * @param string $res restrictions in string format
1298 function loadRestrictions( $res ) {
1299 foreach( explode( ':', trim( $res ) ) as $restrict ) {
1300 $temp = explode( '=', trim( $restrict ) );
1301 if(count($temp) == 1) {
1302 // old format should be treated as edit/move restriction
1303 $this->mRestrictions
["edit"] = explode( ',', trim( $temp[0] ) );
1304 $this->mRestrictions
["move"] = explode( ',', trim( $temp[0] ) );
1306 $this->mRestrictions
[$temp[0]] = explode( ',', trim( $temp[1] ) );
1309 $this->mRestrictionsLoaded
= true;
1313 * Accessor/initialisation for mRestrictions
1314 * @param string $action action that permission needs to be checked for
1315 * @return array the array of groups allowed to edit this article
1318 function getRestrictions($action) {
1319 $id = $this->getArticleID();
1320 if ( 0 == $id ) { return array(); }
1322 if ( ! $this->mRestrictionsLoaded
) {
1323 $dbr =& wfGetDB( DB_SLAVE
);
1324 $res = $dbr->selectField( 'page', 'page_restrictions', 'page_id='.$id );
1325 $this->loadRestrictions( $res );
1327 if( isset( $this->mRestrictions
[$action] ) ) {
1328 return $this->mRestrictions
[$action];
1334 * Is there a version of this page in the deletion archive?
1335 * @return int the number of archived revisions
1338 function isDeleted() {
1339 $fname = 'Title::isDeleted';
1340 if ( $this->getNamespace() < 0 ) {
1343 $dbr =& wfGetDB( DB_SLAVE
);
1344 $n = $dbr->selectField( 'archive', 'COUNT(*)', array( 'ar_namespace' => $this->getNamespace(),
1345 'ar_title' => $this->getDBkey() ), $fname );
1346 if( $this->getNamespace() == NS_IMAGE
) {
1347 $n +
= $dbr->selectField( 'filearchive', 'COUNT(*)',
1348 array( 'fa_name' => $this->getDBkey() ), $fname );
1355 * Get the article ID for this Title from the link cache,
1356 * adding it if necessary
1357 * @param int $flags a bit field; may be GAID_FOR_UPDATE to select
1359 * @return int the ID
1362 function getArticleID( $flags = 0 ) {
1363 $linkCache =& LinkCache
::singleton();
1364 if ( $flags & GAID_FOR_UPDATE
) {
1365 $oldUpdate = $linkCache->forUpdate( true );
1366 $this->mArticleID
= $linkCache->addLinkObj( $this );
1367 $linkCache->forUpdate( $oldUpdate );
1369 if ( -1 == $this->mArticleID
) {
1370 $this->mArticleID
= $linkCache->addLinkObj( $this );
1373 return $this->mArticleID
;
1376 function getLatestRevID() {
1377 if ($this->mLatestID
!== false)
1378 return $this->mLatestID
;
1380 $db =& wfGetDB(DB_SLAVE
);
1381 return $this->mLatestID
= $db->selectField( 'revision',
1383 array('rev_page' => $this->getArticleID()),
1384 'Title::getLatestRevID' );
1388 * This clears some fields in this object, and clears any associated
1389 * keys in the "bad links" section of the link cache.
1391 * - This is called from Article::insertNewArticle() to allow
1392 * loading of the new page_id. It's also called from
1393 * Article::doDeleteArticle()
1395 * @param int $newid the new Article ID
1398 function resetArticleID( $newid ) {
1399 $linkCache =& LinkCache
::singleton();
1400 $linkCache->clearBadLink( $this->getPrefixedDBkey() );
1402 if ( 0 == $newid ) { $this->mArticleID
= -1; }
1403 else { $this->mArticleID
= $newid; }
1404 $this->mRestrictionsLoaded
= false;
1405 $this->mRestrictions
= array();
1409 * Updates page_touched for this page; called from LinksUpdate.php
1410 * @return bool true if the update succeded
1413 function invalidateCache() {
1414 global $wgUseFileCache;
1416 if ( wfReadOnly() ) {
1420 $dbw =& wfGetDB( DB_MASTER
);
1421 $success = $dbw->update( 'page',
1423 'page_touched' => $dbw->timestamp()
1424 ), array( /* WHERE */
1425 'page_namespace' => $this->getNamespace() ,
1426 'page_title' => $this->getDBkey()
1427 ), 'Title::invalidateCache'
1430 if ($wgUseFileCache) {
1431 $cache = new HTMLFileCache($this);
1432 @unlink
($cache->fileCacheName());
1439 * Prefix some arbitrary text with the namespace or interwiki prefix
1442 * @param string $name the text
1443 * @return string the prefixed text
1446 /* private */ function prefix( $name ) {
1450 if ( '' != $this->mInterwiki
) {
1451 $p = $this->mInterwiki
. ':';
1453 if ( 0 != $this->mNamespace
) {
1454 $p .= $wgContLang->getNsText( $this->mNamespace
) . ':';
1460 * Secure and split - main initialisation function for this object
1462 * Assumes that mDbkeyform has been set, and is urldecoded
1463 * and uses underscores, but not otherwise munged. This function
1464 * removes illegal characters, splits off the interwiki and
1465 * namespace prefixes, sets the other forms, and canonicalizes
1467 * @return bool true on success
1470 /* private */ function secureAndSplit() {
1471 global $wgContLang, $wgLocalInterwiki, $wgCapitalLinks;
1474 static $rxTc = false;
1476 # % is needed as well
1477 $rxTc = '/[^' . Title
::legalChars() . ']|%[0-9A-Fa-f]{2}/S';
1480 $this->mInterwiki
= $this->mFragment
= '';
1481 $this->mNamespace
= $this->mDefaultNamespace
; # Usually NS_MAIN
1483 $dbkey = $this->mDbkeyform
;
1485 # Strip Unicode bidi override characters.
1486 # Sometimes they slip into cut-n-pasted page titles, where the
1487 # override chars get included in list displays.
1488 $dbkey = str_replace( "\xE2\x80\x8E", '', $dbkey ); // 200E LEFT-TO-RIGHT MARK
1489 $dbkey = str_replace( "\xE2\x80\x8F", '', $dbkey ); // 200F RIGHT-TO-LEFT MARK
1491 # Clean up whitespace
1493 $dbkey = preg_replace( '/[ _]+/', '_', $dbkey );
1494 $dbkey = trim( $dbkey, '_' );
1496 if ( '' == $dbkey ) {
1500 if( false !== strpos( $dbkey, UTF8_REPLACEMENT
) ) {
1501 # Contained illegal UTF-8 sequences or forbidden Unicode chars.
1505 $this->mDbkeyform
= $dbkey;
1507 # Initial colon indicates main namespace rather than specified default
1508 # but should not create invalid {ns,title} pairs such as {0,Project:Foo}
1509 if ( ':' == $dbkey{0} ) {
1510 $this->mNamespace
= NS_MAIN
;
1511 $dbkey = substr( $dbkey, 1 ); # remove the colon but continue processing
1514 # Namespace or interwiki prefix
1518 if ( preg_match( "/^(.+?)_*:_*(.*)$/S", $dbkey, $m ) ) {
1520 $lowerNs = $wgContLang->lc( $p );
1521 if ( $ns = Namespace::getCanonicalIndex( $lowerNs ) ) {
1522 # Canonical namespace
1524 $this->mNamespace
= $ns;
1525 } elseif ( $ns = $wgContLang->getNsIndex( $lowerNs )) {
1526 # Ordinary namespace
1528 $this->mNamespace
= $ns;
1529 } elseif( $this->getInterwikiLink( $p ) ) {
1531 # Can't make a local interwiki link to an interwiki link.
1532 # That's just crazy!
1538 $this->mInterwiki
= $wgContLang->lc( $p );
1540 # Redundant interwiki prefix to the local wiki
1541 if ( 0 == strcasecmp( $this->mInterwiki
, $wgLocalInterwiki ) ) {
1542 if( $dbkey == '' ) {
1543 # Can't have an empty self-link
1546 $this->mInterwiki
= '';
1548 # Do another namespace split...
1552 # If there's an initial colon after the interwiki, that also
1553 # resets the default namespace
1554 if ( $dbkey !== '' && $dbkey[0] == ':' ) {
1555 $this->mNamespace
= NS_MAIN
;
1556 $dbkey = substr( $dbkey, 1 );
1559 # If there's no recognized interwiki or namespace,
1560 # then let the colon expression be part of the title.
1565 # We already know that some pages won't be in the database!
1567 if ( '' != $this->mInterwiki || NS_SPECIAL
== $this->mNamespace
) {
1568 $this->mArticleID
= 0;
1570 $fragment = strstr( $dbkey, '#' );
1571 if ( false !== $fragment ) {
1572 $this->setFragment( $fragment );
1573 $dbkey = substr( $dbkey, 0, strlen( $dbkey ) - strlen( $fragment ) );
1574 # remove whitespace again: prevents "Foo_bar_#"
1575 # becoming "Foo_bar_"
1576 $dbkey = preg_replace( '/_*$/', '', $dbkey );
1579 # Reject illegal characters.
1581 if( preg_match( $rxTc, $dbkey ) ) {
1586 * Pages with "/./" or "/../" appearing in the URLs will
1587 * often be unreachable due to the way web browsers deal
1588 * with 'relative' URLs. Forbid them explicitly.
1590 if ( strpos( $dbkey, '.' ) !== false &&
1591 ( $dbkey === '.' ||
$dbkey === '..' ||
1592 strpos( $dbkey, './' ) === 0 ||
1593 strpos( $dbkey, '../' ) === 0 ||
1594 strpos( $dbkey, '/./' ) !== false ||
1595 strpos( $dbkey, '/../' ) !== false ) )
1601 * Limit the size of titles to 255 bytes.
1602 * This is typically the size of the underlying database field.
1603 * We make an exception for special pages, which don't need to be stored
1604 * in the database, and may edge over 255 bytes due to subpage syntax
1605 * for long titles, e.g. [[Special:Block/Long name]]
1607 if ( ( $this->mNamespace
!= NS_SPECIAL
&& strlen( $dbkey ) > 255 ) ||
1608 strlen( $dbkey ) > 512 )
1614 * Normally, all wiki links are forced to have
1615 * an initial capital letter so [[foo]] and [[Foo]]
1616 * point to the same place.
1618 * Don't force it for interwikis, since the other
1619 * site might be case-sensitive.
1621 if( $wgCapitalLinks && $this->mInterwiki
== '') {
1622 $dbkey = $wgContLang->ucfirst( $dbkey );
1626 * Can't make a link to a namespace alone...
1627 * "empty" local links can only be self-links
1628 * with a fragment identifier.
1631 $this->mInterwiki
== '' &&
1632 $this->mNamespace
!= NS_MAIN
) {
1636 // Any remaining initial :s are illegal.
1637 if ( $dbkey !== '' && ':' == $dbkey{0} ) {
1642 $this->mDbkeyform
= $dbkey;
1643 $this->mUrlform
= wfUrlencode( $dbkey );
1645 $this->mTextform
= str_replace( '_', ' ', $dbkey );
1651 * Set the fragment for this title
1652 * This is kind of bad, since except for this rarely-used function, Title objects
1653 * are immutable. The reason this is here is because it's better than setting the
1654 * members directly, which is what Linker::formatComment was doing previously.
1656 * @param string $fragment text
1657 * @access kind of public
1659 function setFragment( $fragment ) {
1660 $this->mFragment
= str_replace( '_', ' ', substr( $fragment, 1 ) );
1664 * Get a Title object associated with the talk page of this article
1665 * @return Title the object for the talk page
1668 function getTalkPage() {
1669 return Title
::makeTitle( Namespace::getTalk( $this->getNamespace() ), $this->getDBkey() );
1673 * Get a title object associated with the subject page of this
1676 * @return Title the object for the subject page
1679 function getSubjectPage() {
1680 return Title
::makeTitle( Namespace::getSubject( $this->getNamespace() ), $this->getDBkey() );
1684 * Get an array of Title objects linking to this Title
1685 * Also stores the IDs in the link cache.
1687 * WARNING: do not use this function on arbitrary user-supplied titles!
1688 * On heavily-used templates it will max out the memory.
1690 * @param string $options may be FOR UPDATE
1691 * @return array the Title objects linking here
1694 function getLinksTo( $options = '', $table = 'pagelinks', $prefix = 'pl' ) {
1695 $linkCache =& LinkCache
::singleton();
1698 $db =& wfGetDB( DB_MASTER
);
1700 $db =& wfGetDB( DB_SLAVE
);
1703 $res = $db->select( array( 'page', $table ),
1704 array( 'page_namespace', 'page_title', 'page_id' ),
1706 "{$prefix}_from=page_id",
1707 "{$prefix}_namespace" => $this->getNamespace(),
1708 "{$prefix}_title" => $this->getDbKey() ),
1709 'Title::getLinksTo',
1713 if ( $db->numRows( $res ) ) {
1714 while ( $row = $db->fetchObject( $res ) ) {
1715 if ( $titleObj = Title
::makeTitle( $row->page_namespace
, $row->page_title
) ) {
1716 $linkCache->addGoodLinkObj( $row->page_id
, $titleObj );
1717 $retVal[] = $titleObj;
1721 $db->freeResult( $res );
1726 * Get an array of Title objects using this Title as a template
1727 * Also stores the IDs in the link cache.
1729 * WARNING: do not use this function on arbitrary user-supplied titles!
1730 * On heavily-used templates it will max out the memory.
1732 * @param string $options may be FOR UPDATE
1733 * @return array the Title objects linking here
1736 function getTemplateLinksTo( $options = '' ) {
1737 return $this->getLinksTo( $options, 'templatelinks', 'tl' );
1741 * Get an array of Title objects referring to non-existent articles linked from this page
1743 * @param string $options may be FOR UPDATE
1744 * @return array the Title objects
1747 function getBrokenLinksFrom( $options = '' ) {
1749 $db =& wfGetDB( DB_MASTER
);
1751 $db =& wfGetDB( DB_SLAVE
);
1754 $res = $db->safeQuery(
1755 "SELECT pl_namespace, pl_title
1758 ON pl_namespace=page_namespace
1759 AND pl_title=page_title
1761 AND page_namespace IS NULL
1763 $db->tableName( 'pagelinks' ),
1764 $db->tableName( 'page' ),
1765 $this->getArticleId(),
1769 if ( $db->numRows( $res ) ) {
1770 while ( $row = $db->fetchObject( $res ) ) {
1771 $retVal[] = Title
::makeTitle( $row->pl_namespace
, $row->pl_title
);
1774 $db->freeResult( $res );
1780 * Get a list of URLs to purge from the Squid cache when this
1783 * @return array the URLs
1786 function getSquidURLs() {
1790 $this->getInternalURL(),
1791 $this->getInternalURL( 'action=history' )
1794 // purge variant urls as well
1795 if($wgContLang->hasVariants()){
1796 $variants = $wgContLang->getVariants();
1797 foreach($variants as $vCode){
1798 if($vCode==$wgContLang->getCode()) continue; // we don't want default variant
1799 $urls[] = $this->getInternalURL('',$vCode);
1806 function purgeSquid() {
1808 if ( $wgUseSquid ) {
1809 $urls = $this->getSquidURLs();
1810 $u = new SquidUpdate( $urls );
1816 * Move this page without authentication
1817 * @param Title &$nt the new page Title
1820 function moveNoAuth( &$nt ) {
1821 return $this->moveTo( $nt, false );
1825 * Check whether a given move operation would be valid.
1826 * Returns true if ok, or a message key string for an error message
1827 * if invalid. (Scarrrrry ugly interface this.)
1828 * @param Title &$nt the new title
1829 * @param bool $auth indicates whether $wgUser's permissions
1831 * @return mixed true on success, message name on failure
1834 function isValidMoveOperation( &$nt, $auth = true ) {
1835 if( !$this or !$nt ) {
1836 return 'badtitletext';
1838 if( $this->equals( $nt ) ) {
1841 if( !$this->isMovable() ||
!$nt->isMovable() ) {
1842 return 'immobile_namespace';
1845 $oldid = $this->getArticleID();
1846 $newid = $nt->getArticleID();
1848 if ( strlen( $nt->getDBkey() ) < 1 ) {
1849 return 'articleexists';
1851 if ( ( '' == $this->getDBkey() ) ||
1853 ( '' == $nt->getDBkey() ) ) {
1854 return 'badarticleerror';
1858 !$this->userCanEdit() ||
!$nt->userCanEdit() ||
1859 !$this->userCanMove() ||
!$nt->userCanMove() ) ) {
1860 return 'protectedpage';
1863 # The move is allowed only if (1) the target doesn't exist, or
1864 # (2) the target is a redirect to the source, and has no history
1865 # (so we can undo bad moves right after they're done).
1867 if ( 0 != $newid ) { # Target exists; check for validity
1868 if ( ! $this->isValidMoveTarget( $nt ) ) {
1869 return 'articleexists';
1876 * Move a title to a new location
1877 * @param Title &$nt the new title
1878 * @param bool $auth indicates whether $wgUser's permissions
1880 * @return mixed true on success, message name on failure
1883 function moveTo( &$nt, $auth = true, $reason = '' ) {
1884 $err = $this->isValidMoveOperation( $nt, $auth );
1885 if( is_string( $err ) ) {
1889 $pageid = $this->getArticleID();
1890 if( $nt->exists() ) {
1891 $this->moveOverExistingRedirect( $nt, $reason );
1892 $pageCountChange = 0;
1893 } else { # Target didn't exist, do normal move.
1894 $this->moveToNewTitle( $nt, $reason );
1895 $pageCountChange = 1;
1897 $redirid = $this->getArticleID();
1899 # Fixing category links (those without piped 'alternate' names) to be sorted under the new title
1900 $dbw =& wfGetDB( DB_MASTER
);
1901 $categorylinks = $dbw->tableName( 'categorylinks' );
1902 $sql = "UPDATE $categorylinks SET cl_sortkey=" . $dbw->addQuotes( $nt->getPrefixedText() ) .
1903 " WHERE cl_from=" . $dbw->addQuotes( $pageid ) .
1904 " AND cl_sortkey=" . $dbw->addQuotes( $this->getPrefixedText() );
1905 $dbw->query( $sql, 'SpecialMovepage::doSubmit' );
1909 $oldnamespace = $this->getNamespace() & ~
1;
1910 $newnamespace = $nt->getNamespace() & ~
1;
1911 $oldtitle = $this->getDBkey();
1912 $newtitle = $nt->getDBkey();
1914 if( $oldnamespace != $newnamespace ||
$oldtitle != $newtitle ) {
1915 WatchedItem
::duplicateEntries( $this, $nt );
1918 # Update search engine
1919 $u = new SearchUpdate( $pageid, $nt->getPrefixedDBkey() );
1921 $u = new SearchUpdate( $redirid, $this->getPrefixedDBkey(), '' );
1925 if ( $this->getNamespace() == NS_MAIN
and $nt->getNamespace() != NS_MAIN
) {
1926 # Moved out of main namespace
1927 # not viewed, edited, removing
1928 $u = new SiteStatsUpdate( 0, 1, -1, $pageCountChange);
1929 } elseif ( $this->getNamespace() != NS_MAIN
and $nt->getNamespace() == NS_MAIN
) {
1930 # Moved into main namespace
1931 # not viewed, edited, adding
1932 $u = new SiteStatsUpdate( 0, 1, +
1, $pageCountChange );
1933 } elseif ( $pageCountChange ) {
1935 $u = new SiteStatsUpdate( 0, 0, 0, 1 );
1944 wfRunHooks( 'TitleMoveComplete', array( &$this, &$nt, &$wgUser, $pageid, $redirid ) );
1949 * Move page to a title which is at present a redirect to the
1952 * @param Title &$nt the page to move to, which should currently
1956 function moveOverExistingRedirect( &$nt, $reason = '' ) {
1958 $fname = 'Title::moveOverExistingRedirect';
1959 $comment = wfMsgForContent( '1movedto2', $this->getPrefixedText(), $nt->getPrefixedText() );
1962 $comment .= ": $reason";
1965 $now = wfTimestampNow();
1966 $newid = $nt->getArticleID();
1967 $oldid = $this->getArticleID();
1968 $dbw =& wfGetDB( DB_MASTER
);
1969 $linkCache =& LinkCache
::singleton();
1971 # Delete the old redirect. We don't save it to history since
1972 # by definition if we've got here it's rather uninteresting.
1973 # We have to remove it so that the next step doesn't trigger
1974 # a conflict on the unique namespace+title index...
1975 $dbw->delete( 'page', array( 'page_id' => $newid ), $fname );
1977 # Save a null revision in the page's history notifying of the move
1978 $nullRevision = Revision
::newNullRevision( $dbw, $oldid, $comment, true );
1979 $nullRevId = $nullRevision->insertOn( $dbw );
1981 # Change the name of the target page:
1982 $dbw->update( 'page',
1984 'page_touched' => $dbw->timestamp($now),
1985 'page_namespace' => $nt->getNamespace(),
1986 'page_title' => $nt->getDBkey(),
1987 'page_latest' => $nullRevId,
1989 /* WHERE */ array( 'page_id' => $oldid ),
1992 $linkCache->clearLink( $nt->getPrefixedDBkey() );
1994 # Recreate the redirect, this time in the other direction.
1995 $mwRedir = MagicWord
::get( 'redirect' );
1996 $redirectText = $mwRedir->getSynonym( 0 ) . ' [[' . $nt->getPrefixedText() . "]]\n";
1997 $redirectArticle = new Article( $this );
1998 $newid = $redirectArticle->insertOn( $dbw );
1999 $redirectRevision = new Revision( array(
2001 'comment' => $comment,
2002 'text' => $redirectText ) );
2003 $redirectRevision->insertOn( $dbw );
2004 $redirectArticle->updateRevisionOn( $dbw, $redirectRevision, 0 );
2005 $linkCache->clearLink( $this->getPrefixedDBkey() );
2008 $log = new LogPage( 'move' );
2009 $log->addEntry( 'move_redir', $this, $reason, array( 1 => $nt->getPrefixedText() ) );
2011 # Now, we record the link from the redirect to the new title.
2012 # It should have no other outgoing links...
2013 $dbw->delete( 'pagelinks', array( 'pl_from' => $newid ), $fname );
2014 $dbw->insert( 'pagelinks',
2016 'pl_from' => $newid,
2017 'pl_namespace' => $nt->getNamespace(),
2018 'pl_title' => $nt->getDbKey() ),
2022 if ( $wgUseSquid ) {
2023 $urls = array_merge( $nt->getSquidURLs(), $this->getSquidURLs() );
2024 $u = new SquidUpdate( $urls );
2030 * Move page to non-existing title.
2031 * @param Title &$nt the new Title
2034 function moveToNewTitle( &$nt, $reason = '' ) {
2036 $fname = 'MovePageForm::moveToNewTitle';
2037 $comment = wfMsgForContent( '1movedto2', $this->getPrefixedText(), $nt->getPrefixedText() );
2039 $comment .= ": $reason";
2042 $newid = $nt->getArticleID();
2043 $oldid = $this->getArticleID();
2044 $dbw =& wfGetDB( DB_MASTER
);
2045 $now = $dbw->timestamp();
2046 $linkCache =& LinkCache
::singleton();
2048 # Save a null revision in the page's history notifying of the move
2049 $nullRevision = Revision
::newNullRevision( $dbw, $oldid, $comment, true );
2050 $nullRevId = $nullRevision->insertOn( $dbw );
2053 $dbw->update( 'page',
2055 'page_touched' => $now,
2056 'page_namespace' => $nt->getNamespace(),
2057 'page_title' => $nt->getDBkey(),
2058 'page_latest' => $nullRevId,
2060 /* WHERE */ array( 'page_id' => $oldid ),
2064 $linkCache->clearLink( $nt->getPrefixedDBkey() );
2067 $mwRedir = MagicWord
::get( 'redirect' );
2068 $redirectText = $mwRedir->getSynonym( 0 ) . ' [[' . $nt->getPrefixedText() . "]]\n";
2069 $redirectArticle = new Article( $this );
2070 $newid = $redirectArticle->insertOn( $dbw );
2071 $redirectRevision = new Revision( array(
2073 'comment' => $comment,
2074 'text' => $redirectText ) );
2075 $redirectRevision->insertOn( $dbw );
2076 $redirectArticle->updateRevisionOn( $dbw, $redirectRevision, 0 );
2077 $linkCache->clearLink( $this->getPrefixedDBkey() );
2080 $log = new LogPage( 'move' );
2081 $log->addEntry( 'move', $this, $reason, array( 1 => $nt->getPrefixedText()) );
2083 # Purge caches as per article creation
2084 Article
::onArticleCreate( $nt );
2086 # Record the just-created redirect's linking to the page
2087 $dbw->insert( 'pagelinks',
2089 'pl_from' => $newid,
2090 'pl_namespace' => $nt->getNamespace(),
2091 'pl_title' => $nt->getDBkey() ),
2094 # Purge old title from squid
2095 # The new title, and links to the new title, are purged in Article::onArticleCreate()
2096 $this->purgeSquid();
2100 * Checks if $this can be moved to a given Title
2101 * - Selects for update, so don't call it unless you mean business
2103 * @param Title &$nt the new title to check
2106 function isValidMoveTarget( $nt ) {
2108 $fname = 'Title::isValidMoveTarget';
2109 $dbw =& wfGetDB( DB_MASTER
);
2112 $id = $nt->getArticleID();
2113 $obj = $dbw->selectRow( array( 'page', 'revision', 'text'),
2114 array( 'page_is_redirect','old_text','old_flags' ),
2115 array( 'page_id' => $id, 'page_latest=rev_id', 'rev_text_id=old_id' ),
2116 $fname, 'FOR UPDATE' );
2118 if ( !$obj ||
0 == $obj->page_is_redirect
) {
2120 wfDebug( __METHOD__
. ": not a redirect\n" );
2123 $text = Revision
::getRevisionText( $obj );
2125 # Does the redirect point to the source?
2126 # Or is it a broken self-redirect, usually caused by namespace collisions?
2128 if ( preg_match( "/\\[\\[\\s*([^\\]\\|]*)]]/", $text, $m ) ) {
2129 $redirTitle = Title
::newFromText( $m[1] );
2130 if( !is_object( $redirTitle ) ||
2131 ( $redirTitle->getPrefixedDBkey() != $this->getPrefixedDBkey() &&
2132 $redirTitle->getPrefixedDBkey() != $nt->getPrefixedDBkey() ) ) {
2133 wfDebug( __METHOD__
. ": redirect points to other page\n" );
2138 wfDebug( __METHOD__
. ": failsafe\n" );
2142 # Does the article have a history?
2143 $row = $dbw->selectRow( array( 'page', 'revision'),
2145 array( 'page_namespace' => $nt->getNamespace(),
2146 'page_title' => $nt->getDBkey(),
2147 'page_id=rev_page AND page_latest != rev_id'
2148 ), $fname, 'FOR UPDATE'
2151 # Return true if there was no history
2152 return $row === false;
2156 * Create a redirect; fails if the title already exists; does
2159 * @param Title $dest the destination of the redirect
2160 * @param string $comment the comment string describing the move
2161 * @return bool true on success
2164 function createRedirect( $dest, $comment ) {
2165 if ( $this->getArticleID() ) {
2169 $fname = 'Title::createRedirect';
2170 $dbw =& wfGetDB( DB_MASTER
);
2172 $article = new Article( $this );
2173 $newid = $article->insertOn( $dbw );
2174 $revision = new Revision( array(
2176 'comment' => $comment,
2177 'text' => "#REDIRECT [[" . $dest->getPrefixedText() . "]]\n",
2179 $revision->insertOn( $dbw );
2180 $article->updateRevisionOn( $dbw, $revision, 0 );
2183 $dbw->insert( 'pagelinks',
2185 'pl_from' => $newid,
2186 'pl_namespace' => $dest->getNamespace(),
2187 'pl_title' => $dest->getDbKey()
2191 Article
::onArticleCreate( $this );
2196 * Get categories to which this Title belongs and return an array of
2197 * categories' names.
2199 * @return array an array of parents in the form:
2200 * $parent => $currentarticle
2203 function getParentCategories() {
2206 $titlekey = $this->getArticleId();
2207 $dbr =& wfGetDB( DB_SLAVE
);
2208 $categorylinks = $dbr->tableName( 'categorylinks' );
2211 $sql = "SELECT * FROM $categorylinks"
2212 ." WHERE cl_from='$titlekey'"
2213 ." AND cl_from <> '0'"
2214 ." ORDER BY cl_sortkey";
2216 $res = $dbr->query ( $sql ) ;
2218 if($dbr->numRows($res) > 0) {
2219 while ( $x = $dbr->fetchObject ( $res ) )
2220 //$data[] = Title::newFromText($wgContLang->getNSText ( NS_CATEGORY ).':'.$x->cl_to);
2221 $data[$wgContLang->getNSText ( NS_CATEGORY
).':'.$x->cl_to
] = $this->getFullText();
2222 $dbr->freeResult ( $res ) ;
2230 * Get a tree of parent categories
2231 * @param array $children an array with the children in the keys, to check for circular refs
2235 function getParentCategoryTree( $children = array() ) {
2236 $parents = $this->getParentCategories();
2238 if($parents != '') {
2239 foreach($parents as $parent => $current) {
2240 if ( array_key_exists( $parent, $children ) ) {
2241 # Circular reference
2242 $stack[$parent] = array();
2244 $nt = Title
::newFromText($parent);
2246 $stack[$parent] = $nt->getParentCategoryTree( $children +
array($parent => 1) );
2258 * Get an associative array for selecting this title from
2264 function pageCond() {
2265 return array( 'page_namespace' => $this->mNamespace
, 'page_title' => $this->mDbkeyform
);
2269 * Get the revision ID of the previous revision
2271 * @param integer $revision Revision ID. Get the revision that was before this one.
2272 * @return integer $oldrevision|false
2274 function getPreviousRevisionID( $revision ) {
2275 $dbr =& wfGetDB( DB_SLAVE
);
2276 return $dbr->selectField( 'revision', 'rev_id',
2277 'rev_page=' . intval( $this->getArticleId() ) .
2278 ' AND rev_id<' . intval( $revision ) . ' ORDER BY rev_id DESC' );
2282 * Get the revision ID of the next revision
2284 * @param integer $revision Revision ID. Get the revision that was after this one.
2285 * @return integer $oldrevision|false
2287 function getNextRevisionID( $revision ) {
2288 $dbr =& wfGetDB( DB_SLAVE
);
2289 return $dbr->selectField( 'revision', 'rev_id',
2290 'rev_page=' . intval( $this->getArticleId() ) .
2291 ' AND rev_id>' . intval( $revision ) . ' ORDER BY rev_id' );
2295 * Get the number of revisions between the given revision IDs.
2297 * @param integer $old Revision ID.
2298 * @param integer $new Revision ID.
2299 * @return integer Number of revisions between these IDs.
2301 function countRevisionsBetween( $old, $new ) {
2302 $dbr =& wfGetDB( DB_SLAVE
);
2303 return $dbr->selectField( 'revision', 'count(*)',
2304 'rev_page = ' . intval( $this->getArticleId() ) .
2305 ' AND rev_id > ' . intval( $old ) .
2306 ' AND rev_id < ' . intval( $new ) );
2310 * Compare with another title.
2312 * @param Title $title
2315 function equals( $title ) {
2316 // Note: === is necessary for proper matching of number-like titles.
2317 return $this->getInterwiki() === $title->getInterwiki()
2318 && $this->getNamespace() == $title->getNamespace()
2319 && $this->getDbkey() === $title->getDbkey();
2323 * Check if page exists
2327 return $this->getArticleId() != 0;
2331 * Should a link should be displayed as a known link, just based on its title?
2333 * Currently, a self-link with a fragment and special pages are in
2334 * this category. Special pages never exist in the database.
2336 function isAlwaysKnown() {
2337 return $this->isExternal() ||
( 0 == $this->mNamespace
&& "" == $this->mDbkeyform
)
2338 || NS_SPECIAL
== $this->mNamespace
;
2342 * Update page_touched timestamps and send squid purge messages for
2343 * pages linking to this title. May be sent to the job queue depending
2344 * on the number of links. Typically called on create and delete.
2346 function touchLinks() {
2347 $u = new HTMLCacheUpdate( $this, 'pagelinks' );
2350 if ( $this->getNamespace() == NS_CATEGORY
) {
2351 $u = new HTMLCacheUpdate( $this, 'categorylinks' );
2357 * Get the last touched timestamp
2359 function getTouched() {
2360 $dbr =& wfGetDB( DB_SLAVE
);
2361 $touched = $dbr->selectField( 'page', 'page_touched',
2363 'page_namespace' => $this->getNamespace(),
2364 'page_title' => $this->getDBkey()
2371 * Get a cached value from a global cache that is invalidated when this page changes
2372 * @param string $key the key
2373 * @param callback $callback A callback function which generates the value on cache miss
2375 * @deprecated use DependencyWrapper
2377 function getRelatedCache( $memc, $key, $expiry, $callback, $params = array() ) {
2378 return DependencyWrapper
::getValueFromCache( $memc, $key, $expiry, $callback,
2379 $params, new TitleDependency( $this ) );
2382 function trackbackURL() {
2383 global $wgTitle, $wgScriptPath, $wgServer;
2385 return "$wgServer$wgScriptPath/trackback.php?article="
2386 . htmlspecialchars(urlencode($wgTitle->getPrefixedDBkey()));
2389 function trackbackRDF() {
2390 $url = htmlspecialchars($this->getFullURL());
2391 $title = htmlspecialchars($this->getText());
2392 $tburl = $this->trackbackURL();
2395 <rdf:RDF xmlns:rdf=\"http://www.w3.org/1999/02/22-rdf-syntax-ns#\"
2396 xmlns:dc=\"http://purl.org/dc/elements/1.1/\"
2397 xmlns:trackback=\"http://madskills.com/public/xml/rss/module/trackback/\">
2400 dc:identifier=\"$url\"
2402 trackback:ping=\"$tburl\" />
2407 * Generate strings used for xml 'id' names in monobook tabs
2410 function getNamespaceKey() {
2412 switch ($this->getNamespace()) {
2415 return 'nstab-main';
2418 return 'nstab-user';
2420 return 'nstab-media';
2422 return 'nstab-special';
2424 case NS_PROJECT_TALK
:
2425 return 'nstab-project';
2428 return 'nstab-image';
2430 case NS_MEDIAWIKI_TALK
:
2431 return 'nstab-mediawiki';
2433 case NS_TEMPLATE_TALK
:
2434 return 'nstab-template';
2437 return 'nstab-help';
2439 case NS_CATEGORY_TALK
:
2440 return 'nstab-category';
2442 return 'nstab-' . $wgContLang->lc( $this->getSubjectNsText() );
2447 * Returns true if this title resolves to the named special page
2448 * @param string $name The special page name
2451 function isSpecial( $name ) {
2452 if ( $this->getNamespace() == NS_SPECIAL
) {
2453 list( $thisName, /* $subpage */ ) = SpecialPage
::resolveAliasWithSubpage( $this->getDBkey() );
2454 if ( $name == $thisName ) {
2462 * If the Title refers to a special page alias which is not the local default,
2463 * returns a new Title which points to the local default. Otherwise, returns $this.
2465 function fixSpecialName() {
2466 if ( $this->getNamespace() == NS_SPECIAL
) {
2467 $canonicalName = SpecialPage
::resolveAlias( $this->mDbkeyform
);
2468 if ( $canonicalName ) {
2469 $localName = SpecialPage
::getLocalNameFor( $canonicalName );
2470 if ( $localName != $this->mDbkeyform
) {
2471 return Title
::makeTitle( NS_SPECIAL
, $localName );