9 require_once( 'normal/UtfNormal.php' );
11 $wgTitleInterwikiCache = array();
12 define ( 'GAID_FOR_UPDATE', 1 );
14 # Title::newFromTitle maintains a cache to avoid
15 # expensive re-normalization of commonly used titles.
16 # On a batch operation this can become a memory leak
17 # if not bounded. After hitting this many titles,
19 define( 'MW_TITLECACHE_MAX', 1000 );
23 * - Represents a title, which may contain an interwiki designation or namespace
24 * - Can fetch various kinds of data from the database, albeit inefficiently.
30 * All member variables should be considered private
31 * Please use the accessor functions
38 var $mTextform; # Text form (spaces not underscores) of the main part
39 var $mUrlform; # URL-encoded form of the main part
40 var $mDbkeyform; # Main part with underscores
41 var $mNamespace; # Namespace index, i.e. one of the NS_xxxx constants
42 var $mInterwiki; # Interwiki prefix (or null string)
43 var $mFragment; # Title fragment (i.e. the bit after the #)
44 var $mArticleID; # Article ID, fetched from the link cache on demand
45 var $mRestrictions; # Array of groups allowed to edit this article
46 # Only null or "sysop" are supported
47 var $mRestrictionsLoaded; # Boolean for initialisation on demand
48 var $mPrefixedText; # Text form including namespace/interwiki, initialised on demand
49 var $mDefaultNamespace; # Namespace index when there is no namespace
50 # Zero except in {{transclusion}} tags
58 /* private */ function Title() {
59 $this->mInterwiki
= $this->mUrlform
=
60 $this->mTextform
= $this->mDbkeyform
= '';
61 $this->mArticleID
= -1;
62 $this->mNamespace
= NS_MAIN
;
63 $this->mRestrictionsLoaded
= false;
64 $this->mRestrictions
= array();
65 # Dont change the following, NS_MAIN is hardcoded in several place
67 $this->mDefaultNamespace
= NS_MAIN
;
71 * Create a new Title from a prefixed DB key
72 * @param string $key The database key, which has underscores
73 * instead of spaces, possibly including namespace and
75 * @return Title the new object, or NULL on an error
79 /* static */ function newFromDBkey( $key ) {
81 $t->mDbkeyform
= $key;
82 if( $t->secureAndSplit() )
89 * Create a new Title from text, such as what one would
90 * find in a link. Decodes any HTML entities in the text.
92 * @param string $text the link text; spaces, prefixes,
93 * and an initial ':' indicating the main namespace
95 * @param int $defaultNamespace the namespace to use if
96 * none is specified by a prefix
97 * @return Title the new object, or NULL on an error
101 function &newFromText( $text, $defaultNamespace = NS_MAIN
) {
102 $fname = 'Title::newFromText';
103 wfProfileIn( $fname );
105 if( is_object( $text ) ) {
106 wfDebugDieBacktrace( 'Title::newFromText given an object' );
110 * Wiki pages often contain multiple links to the same page.
111 * Title normalization and parsing can become expensive on
112 * pages with many links, so we can save a little time by
115 * In theory these are value objects and won't get changed...
117 static $titleCache = array();
118 if( $defaultNamespace == NS_MAIN
&& isset( $titleCache[$text] ) ) {
119 wfProfileOut( $fname );
120 return $titleCache[$text];
124 * Convert things like é into real text...
126 global $wgInputEncoding;
127 $filteredText = do_html_entity_decode( $text, ENT_COMPAT
, $wgInputEncoding );
130 * Convert things like ā or 〗 into real text...
131 * WARNING: Not friendly to internal links on a latin-1 wiki.
133 $filteredText = wfMungeToUtf8( $filteredText );
135 # What was this for? TS 2004-03-03
136 # $text = urldecode( $text );
139 $t->mDbkeyform
= str_replace( ' ', '_', $filteredText );
140 $t->mDefaultNamespace
= $defaultNamespace;
142 if( $t->secureAndSplit() ) {
143 if( $defaultNamespace == NS_MAIN
) {
144 if( count( $titleCache ) >= MW_TITLECACHE_MAX
) {
145 # Avoid memory leaks on mass operations...
146 $titleCache = array();
148 $titleCache[$text] =& $t;
150 wfProfileOut( $fname );
153 wfProfileOut( $fname );
159 * Create a new Title from URL-encoded text. Ensures that
160 * the given title's length does not exceed the maximum.
161 * @param string $url the title, as might be taken from a URL
162 * @return Title the new object, or NULL on an error
166 /* static */ function newFromURL( $url ) {
167 global $wgLang, $wgServer;
170 # For compatibility with old buggy URLs. "+" is not valid in titles,
171 # but some URLs used it as a space replacement and they still come
172 # from some external search tools.
173 $s = str_replace( '+', ' ', $url );
175 $t->mDbkeyform
= str_replace( ' ', '_', $s );
176 if( $t->secureAndSplit() ) {
184 * 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
187 * @param int $id the page_id corresponding to the Title to create
188 * @return Title the new object, or NULL on an error
191 /* static */ function newFromID( $id ) {
192 $fname = 'Title::newFromID';
193 $dbr =& wfGetDB( DB_SLAVE
);
194 $row = $dbr->selectRow( 'page', array( 'page_namespace', 'page_title' ),
195 array( 'page_id' => $id ), $fname );
196 if ( $row !== false ) {
197 $title = Title
::makeTitle( $row->page_namespace
, $row->page_title
);
205 * Create a new Title from a namespace index and a DB key.
206 * It's assumed that $ns and $title are *valid*, for instance when
207 * they came directly from the database or a special page name.
208 * For convenience, spaces are converted to underscores so that
209 * eg user_text fields can be used directly.
211 * @param int $ns the namespace of the article
212 * @param string $title the unprefixed database key form
213 * @return Title the new object
217 /* static */ function &makeTitle( $ns, $title ) {
221 $t->mNamespace
= IntVal( $ns );
222 $t->mDbkeyform
= str_replace( ' ', '_', $title );
223 $t->mArticleID
= ( $ns >= 0 ) ?
-1 : 0;
224 $t->mUrlform
= wfUrlencode( $t->mDbkeyform
);
225 $t->mTextform
= str_replace( '_', ' ', $title );
230 * Create a new Title frrom a namespace index and a DB key.
231 * The parameters will be checked for validity, which is a bit slower
232 * than makeTitle() but safer for user-provided data.
233 * @param int $ns the namespace of the article
234 * @param string $title the database key form
235 * @return Title the new object, or NULL on an error
239 /* static */ function makeTitleSafe( $ns, $title ) {
241 $t->mDbkeyform
= Title
::makeName( $ns, $title );
242 if( $t->secureAndSplit() ) {
250 * Create a new Title for the Main Page
252 * @return Title the new object
255 /* static */ function newMainPage() {
256 return Title
::newFromText( wfMsgForContent( 'mainpage' ) );
260 * Create a new Title for a redirect
261 * @param string $text the redirect title text
262 * @return Title the new object, or NULL if the text is not a
267 /* static */ function newFromRedirect( $text ) {
270 if ( $wgMwRedir->matchStart( $text ) ) {
271 if ( preg_match( '/\\[\\[([^\\]\\|]+)[\\]\\|]/', $text, $m ) ) {
272 # categories are escaped using : for example one can enter:
273 # #REDIRECT [[:Category:Music]]. Need to remove it.
274 if ( substr($m[1],0,1) == ':') {
275 # We don't want to keep the ':'
276 $m[1] = substr( $m[1], 1 );
279 $rt = Title
::newFromText( $m[1] );
280 # Disallow redirects to Special:Userlogout
281 if ( !is_null($rt) && $rt->getNamespace() == NS_SPECIAL
&& preg_match( '/^Userlogout/i', $rt->getText() ) ) {
289 #----------------------------------------------------------------------------
291 #----------------------------------------------------------------------------
294 * Get the prefixed DB key associated with an ID
295 * @param int $id the page_id of the article
296 * @return Title an object representing the article, or NULL
297 * if no such article was found
301 /* static */ function nameOf( $id ) {
302 $fname = 'Title::nameOf';
303 $dbr =& wfGetDB( DB_SLAVE
);
305 $s = $dbr->selectRow( 'page', array( 'page_namespace','page_title' ), array( 'page_id' => $id ), $fname );
306 if ( $s === false ) { return NULL; }
308 $n = Title
::makeName( $s->page_namespace
, $s->page_title
);
313 * Get a regex character class describing the legal characters in a link
314 * @return string the list of characters, not delimited
318 /* static */ function legalChars() {
319 # Missing characters:
320 # * []|# Needed for link syntax
321 # * % and + are corrupted by Apache when they appear in the path
323 # % seems to work though
325 # The problem with % is that URLs are double-unescaped: once by Apache's
326 # path conversion code, and again by PHP. So %253F, for example, becomes "?".
327 # Our code does not double-escape to compensate for this, indeed double escaping
328 # would break if the double-escaped title was passed in the query string
329 # rather than the path. This is a minor security issue because articles can be
330 # created such that they are hard to view or edit. -- TS
332 # Theoretically 0x80-0x9F of ISO 8859-1 should be disallowed, but
333 # this breaks interlanguage links
335 $set = " %!\"$&'()*,\\-.\\/0-9:;=?@A-Z\\\\^_`a-z~\\x80-\\xFF";
340 * Get a string representation of a title suitable for
341 * including in a search index
343 * @param int $ns a namespace index
344 * @param string $title text-form main part
345 * @return string a stripped-down title string ready for the
348 /* static */ function indexTitle( $ns, $title ) {
349 global $wgDBminWordLen, $wgContLang;
350 require_once( 'SearchEngine.php' );
352 $lc = SearchEngine
::legalSearchChars() . '&#;';
353 $t = $wgContLang->stripForSearch( $title );
354 $t = preg_replace( "/[^{$lc}]+/", ' ', $t );
355 $t = strtolower( $t );
358 $t = preg_replace( "/([{$lc}]+)'s( |$)/", "\\1 \\1's ", $t );
359 $t = preg_replace( "/([{$lc}]+)s'( |$)/", "\\1s ", $t );
361 $t = preg_replace( "/\\s+/", ' ', $t );
363 if ( $ns == NS_IMAGE
) {
364 $t = preg_replace( "/ (png|gif|jpg|jpeg|ogg)$/", "", $t );
370 * Make a prefixed DB key from a DB key and a namespace index
371 * @param int $ns numerical representation of the namespace
372 * @param string $title the DB key form the title
373 * @return string the prefixed form of the title
375 /* static */ function makeName( $ns, $title ) {
378 $n = $wgContLang->getNsText( $ns );
379 if ( '' == $n ) { return $title; }
380 else { return $n.':'.$title; }
384 * Returns the URL associated with an interwiki prefix
385 * @param string $key the interwiki prefix (e.g. "MeatBall")
386 * @return the associated URL, containing "$1", which should be
387 * replaced by an article title
391 function getInterwikiLink( $key ) {
392 global $wgMemc, $wgDBname, $wgInterwikiExpiry, $wgTitleInterwikiCache;
393 $fname = 'Title::getInterwikiLink';
395 wfProfileIn( $fname );
397 $k = $wgDBname.':interwiki:'.$key;
398 if( array_key_exists( $k, $wgTitleInterwikiCache ) ) {
399 wfProfileOut( $fname );
400 return $wgTitleInterwikiCache[$k]->iw_url
;
403 $s = $wgMemc->get( $k );
404 # Ignore old keys with no iw_local
405 if( $s && isset( $s->iw_local
) ) {
406 $wgTitleInterwikiCache[$k] = $s;
407 wfProfileOut( $fname );
411 $dbr =& wfGetDB( DB_SLAVE
);
412 $res = $dbr->select( 'interwiki',
413 array( 'iw_url', 'iw_local' ),
414 array( 'iw_prefix' => $key ), $fname );
416 wfProfileOut( $fname );
420 $s = $dbr->fetchObject( $res );
422 # Cache non-existence: create a blank object and save it to memcached
427 $wgMemc->set( $k, $s, $wgInterwikiExpiry );
428 $wgTitleInterwikiCache[$k] = $s;
430 wfProfileOut( $fname );
435 * Determine whether the object refers to a page within
438 * @return bool TRUE if this is an in-project interwiki link
439 * or a wikilink, FALSE otherwise
443 global $wgTitleInterwikiCache, $wgDBname;
445 if ( $this->mInterwiki
!= '' ) {
446 # Make sure key is loaded into cache
447 $this->getInterwikiLink( $this->mInterwiki
);
448 $k = $wgDBname.':interwiki:' . $this->mInterwiki
;
449 return (bool)($wgTitleInterwikiCache[$k]->iw_local
);
456 * Update the page_touched field for an array of title objects
457 * @todo Inefficient unless the IDs are already loaded into the
459 * @param array $titles an array of Title objects to be touched
460 * @param string $timestamp the timestamp to use instead of the
461 * default current time
465 /* static */ function touchArray( $titles, $timestamp = '' ) {
466 if ( count( $titles ) == 0 ) {
469 $dbw =& wfGetDB( DB_MASTER
);
470 if ( $timestamp == '' ) {
471 $timestamp = $dbw->timestamp();
473 $page = $dbw->tableName( 'page' );
474 $sql = "UPDATE $page SET page_touched='{$timestamp}' WHERE page_id IN (";
477 foreach ( $titles as $title ) {
482 $sql .= $title->getArticleID();
486 $dbw->query( $sql, 'Title::touchArray' );
490 #----------------------------------------------------------------------------
492 #----------------------------------------------------------------------------
494 /** Simple accessors */
496 * Get the text form (spaces not underscores) of the main part
500 function getText() { return $this->mTextform
; }
502 * Get the URL-encoded form of the main part
506 function getPartialURL() { return $this->mUrlform
; }
508 * Get the main part with underscores
512 function getDBkey() { return $this->mDbkeyform
; }
514 * Get the namespace index, i.e. one of the NS_xxxx constants
518 function getNamespace() { return $this->mNamespace
; }
520 * Get the interwiki prefix (or null string)
524 function getInterwiki() { return $this->mInterwiki
; }
526 * Get the Title fragment (i.e. the bit after the #)
530 function getFragment() { return $this->mFragment
; }
532 * Get the default namespace index, for when there is no namespace
536 function getDefaultNamespace() { return $this->mDefaultNamespace
; }
539 * Get title for search index
540 * @return string a stripped-down title string ready for the
543 function getIndexTitle() {
544 return Title
::indexTitle( $this->mNamespace
, $this->mTextform
);
548 * Get the prefixed database key form
549 * @return string the prefixed title, with underscores and
550 * any interwiki and namespace prefixes
553 function getPrefixedDBkey() {
554 $s = $this->prefix( $this->mDbkeyform
);
555 $s = str_replace( ' ', '_', $s );
560 * Get the prefixed title with spaces.
561 * This is the form usually used for display
562 * @return string the prefixed title, with spaces
565 function getPrefixedText() {
567 if ( empty( $this->mPrefixedText
) ) {
568 $s = $this->prefix( $this->mTextform
);
569 $s = str_replace( '_', ' ', $s );
570 $this->mPrefixedText
= $s;
572 return $this->mPrefixedText
;
576 * Get the prefixed title with spaces, plus any fragment
577 * (part beginning with '#')
578 * @return string the prefixed title, with spaces and
579 * the fragment, including '#'
582 function getFullText() {
584 $text = $this->getPrefixedText();
585 if( '' != $this->mFragment
) {
586 $text .= '#' . $this->mFragment
;
592 * Get a URL-encoded title (not an actual URL) including interwiki
593 * @return string the URL-encoded form
596 function getPrefixedURL() {
597 $s = $this->prefix( $this->mDbkeyform
);
598 $s = str_replace( ' ', '_', $s );
600 $s = wfUrlencode ( $s ) ;
602 # Cleaning up URL to make it look nice -- is this safe?
603 $s = str_replace( '%28', '(', $s );
604 $s = str_replace( '%29', ')', $s );
610 * Get a real URL referring to this title, with interwiki link and
613 * @param string $query an optional query string, not used
614 * for interwiki links
615 * @return string the URL
618 function getFullURL( $query = '' ) {
619 global $wgContLang, $wgServer, $wgScript;
621 if ( '' == $this->mInterwiki
) {
622 return $wgServer . $this->getLocalUrl( $query );
624 $baseUrl = $this->getInterwikiLink( $this->mInterwiki
);
625 $namespace = $wgContLang->getNsText( $this->mNamespace
);
626 if ( '' != $namespace ) {
627 # Can this actually happen? Interwikis shouldn't be parsed.
630 $url = str_replace( '$1', $namespace . $this->mUrlform
, $baseUrl );
632 if( false === strpos( $url, '?' ) ) {
639 if ( '' != $this->mFragment
) {
640 $url .= '#' . $this->mFragment
;
647 * Get a relative directory for putting an HTML version of this article into
649 function getHashedDirectory() {
650 $dbkey = $this->getPrefixedDBkey();
651 if ( strlen( $dbkey ) < 2 ) {
652 $dbkey = sprintf( "%2s", $dbkey );
655 for ( $i=0; $i<=1; $i++
) {
659 if ( ord( $dbkey{$i} ) < 128 && ord( $dbkey{$i} ) > 32 ) {
660 $dir .= strtolower( $dbkey{$i} );
662 $dir .= sprintf( "%02X", ord( $dbkey{$i} ) );
668 function getHashedFilename() {
669 $dbkey = $this->getPrefixedDBkey();
670 $dir = $this->getHashedDirectory();
671 $friendlyName = strtr( $dbkey, '/\\:*?"<>|', '_________' );
672 return "$dir/$friendlyName.html";
676 * Get a URL with no fragment or server name
677 * @param string $query an optional query string; if not specified,
678 * $wgArticlePath will be used.
679 * @return string the URL
682 function getLocalURL( $query = '' ) {
683 global $wgLang, $wgArticlePath, $wgScript, $wgMakeDumpLinks;
685 if ( $this->isExternal() ) {
686 return $this->getFullURL();
689 $dbkey = wfUrlencode( $this->getPrefixedDBkey() );
690 if ( $wgMakeDumpLinks ) {
691 $url = str_replace( '$1', wfUrlencode( $this->getHashedFilename() ), $wgArticlePath );
692 } elseif ( $query == '' ) {
693 $url = str_replace( '$1', $dbkey, $wgArticlePath );
695 if( preg_match( '/^(.*&|)action=([^&]*)(&(.*)|)$/', $query, $matches ) ) {
696 global $wgActionPaths;
697 $action = urldecode( $matches[2] );
698 if( isset( $wgActionPaths[$action] ) ) {
699 $query = $matches[1];
700 if( isset( $matches[4] ) ) $query .= $matches[4];
701 $url = str_replace( '$1', $dbkey, $wgActionPaths[$action] );
702 if( $query != '' ) $url .= '?' . $query;
706 if ( $query == '-' ) {
709 $url = "{$wgScript}?title={$dbkey}&{$query}";
715 * Get an HTML-escaped version of the URL form, suitable for
716 * using in a link, without a server name or fragment
717 * @param string $query an optional query string
718 * @return string the URL
721 function escapeLocalURL( $query = '' ) {
722 return htmlspecialchars( $this->getLocalURL( $query ) );
726 * Get an HTML-escaped version of the URL form, suitable for
727 * using in a link, including the server name and fragment
729 * @return string the URL
730 * @param string $query an optional query string
733 function escapeFullURL( $query = '' ) {
734 return htmlspecialchars( $this->getFullURL( $query ) );
738 * Get the URL form for an internal link.
739 * - Used in various Squid-related code, in case we have a different
740 * internal hostname for the server from the exposed one.
742 * @param string $query an optional query string
743 * @return string the URL
746 function getInternalURL( $query = '' ) {
747 global $wgInternalServer;
748 return $wgInternalServer . $this->getLocalURL( $query );
752 * Get the edit URL for this Title
753 * @return string the URL, or a null string if this is an
757 function getEditURL() {
758 global $wgServer, $wgScript;
760 if ( '' != $this->mInterwiki
) { return ''; }
761 $s = $this->getLocalURL( 'action=edit' );
767 * Get the HTML-escaped displayable text form.
768 * Used for the title field in <a> tags.
769 * @return string the text, including any prefixes
772 function getEscapedText() {
773 return htmlspecialchars( $this->getPrefixedText() );
777 * Is this Title interwiki?
781 function isExternal() { return ( '' != $this->mInterwiki
); }
784 * Does the title correspond to a protected article?
785 * @param string $what the action the page is protected from,
786 * by default checks move and edit
790 function isProtected($action = '') {
791 if ( -1 == $this->mNamespace
) { return true; }
792 if($action == 'edit' ||
$action == '') {
793 $a = $this->getRestrictions("edit");
794 if ( in_array( 'sysop', $a ) ) { return true; }
796 if($action == 'move' ||
$action == '') {
797 $a = $this->getRestrictions("move");
798 if ( in_array( 'sysop', $a ) ) { return true; }
804 * Is $wgUser is watching this page?
808 function userIsWatching() {
811 if ( -1 == $this->mNamespace
) { return false; }
812 if ( 0 == $wgUser->getID() ) { return false; }
814 return $wgUser->isWatched( $this );
818 * Is $wgUser perform $action this page?
819 * @param string $action action that permission needs to be checked for
823 function userCan($action) {
824 $fname = 'Title::userCanEdit';
825 wfProfileIn( $fname );
828 if( NS_SPECIAL
== $this->mNamespace
) {
829 wfProfileOut( $fname );
832 if( NS_MEDIAWIKI
== $this->mNamespace
&&
833 !$wgUser->isAllowed('editinterface') ) {
834 wfProfileOut( $fname );
837 if( $this->mDbkeyform
== '_' ) {
838 # FIXME: Is this necessary? Shouldn't be allowed anyway...
839 wfProfileOut( $fname );
843 # protect global styles and js
844 if ( NS_MEDIAWIKI
== $this->mNamespace
845 && preg_match("/\\.(css|js)$/", $this->mTextform
)
846 && !$wgUser->isAllowed('editinterface') ) {
847 wfProfileOut( $fname );
851 # protect css/js subpages of user pages
852 # XXX: this might be better using restrictions
853 # XXX: Find a way to work around the php bug that prevents using $this->userCanEditCssJsSubpage() from working
854 if( NS_USER
== $this->mNamespace
855 && preg_match("/\\.(css|js)$/", $this->mTextform
)
856 && !$wgUser->isAllowed('editinterface')
857 && !preg_match('/^'.preg_quote($wgUser->getName(), '/').'\//', $this->mTextform
) ) {
858 wfProfileOut( $fname );
862 foreach( $this->getRestrictions($action) as $right ) {
863 if( '' != $right && !$wgUser->isAllowed( $right ) ) {
864 wfProfileOut( $fname );
869 if( $action == 'move' && !$this->isMovable() ) {
870 wfProfileOut( $fname );
874 wfProfileOut( $fname );
879 * Can $wgUser edit this page?
883 function userCanEdit() {
884 return $this->userCan('edit');
888 * Can $wgUser move this page?
892 function userCanMove() {
893 return $this->userCan('move');
897 * Would anybody with sufficient privileges be able to move this page?
898 * Some pages just aren't movable.
903 function isMovable() {
904 return Namespace::isMovable( $this->getNamespace() )
905 && $this->getInterwiki() == '';
909 * Can $wgUser read this page?
913 function userCanRead() {
916 if( $wgUser->isAllowed('read') ) {
919 global $wgWhitelistRead;
921 /** If anon users can create an account,
922 they need to reach the login page first! */
923 if( $wgUser->isAllowed( 'createaccount' )
924 && $this->mId
== NS_SPECIAL
925 && $this->getText() == 'Userlogin' ) {
929 /** some pages are explicitly allowed */
930 $name = $this->getPrefixedText();
931 if( in_array( $name, $wgWhitelistRead ) ) {
935 # Compatibility with old settings
936 if( $this->getNamespace() == NS_MAIN
) {
937 if( in_array( ':' . $name, $wgWhitelistRead ) ) {
946 * Is this a talk page of some sort?
950 function isTalkPage() {
951 return Namespace::isTalk( $this->getNamespace() );
955 * Is this a .css or .js subpage of a user page?
959 function isCssJsSubpage() {
960 return ( NS_USER
== $this->mNamespace
and preg_match("/\\.(css|js)$/", $this->mTextform
) );
963 * Is this a .css subpage of a user page?
967 function isCssSubpage() {
968 return ( NS_USER
== $this->mNamespace
and preg_match("/\\.css$/", $this->mTextform
) );
971 * Is this a .js subpage of a user page?
975 function isJsSubpage() {
976 return ( NS_USER
== $this->mNamespace
and preg_match("/\\.js$/", $this->mTextform
) );
979 * Protect css/js subpages of user pages: can $wgUser edit
983 * @todo XXX: this might be better using restrictions
986 function userCanEditCssJsSubpage() {
988 return ( $wgUser->isAllowed('editinterface') or preg_match('/^'.preg_quote($wgUser->getName(), '/').'\//', $this->mTextform
) );
992 * Loads a string into mRestrictions array
993 * @param string $res restrictions in string format
996 function loadRestrictions( $res ) {
997 foreach( explode( ':', trim( $res ) ) as $restrict ) {
998 $temp = explode( '=', trim( $restrict ) );
999 if(count($temp) == 1) {
1000 // old format should be treated as edit/move restriction
1001 $this->mRestrictions
["edit"] = explode( ',', trim( $temp[0] ) );
1002 $this->mRestrictions
["move"] = explode( ',', trim( $temp[0] ) );
1004 $this->mRestrictions
[$temp[0]] = explode( ',', trim( $temp[1] ) );
1007 $this->mRestrictionsLoaded
= true;
1011 * Accessor/initialisation for mRestrictions
1012 * @param string $action action that permission needs to be checked for
1013 * @return array the array of groups allowed to edit this article
1016 function getRestrictions($action) {
1017 $id = $this->getArticleID();
1018 if ( 0 == $id ) { return array(); }
1020 if ( ! $this->mRestrictionsLoaded
) {
1021 $dbr =& wfGetDB( DB_SLAVE
);
1022 $res = $dbr->selectField( 'page', 'page_restrictions', 'page_id='.$id );
1023 $this->loadRestrictions( $res );
1025 if( isset( $this->mRestrictions
[$action] ) ) {
1026 return $this->mRestrictions
[$action];
1032 * Is there a version of this page in the deletion archive?
1033 * @return int the number of archived revisions
1036 function isDeleted() {
1037 $fname = 'Title::isDeleted';
1038 $dbr =& wfGetDB( DB_SLAVE
);
1039 $n = $dbr->selectField( 'archive', 'COUNT(*)', array( 'ar_namespace' => $this->getNamespace(),
1040 'ar_title' => $this->getDBkey() ), $fname );
1045 * Get the article ID for this Title from the link cache,
1046 * adding it if necessary
1047 * @param int $flags a bit field; may be GAID_FOR_UPDATE to select
1049 * @return int the ID
1052 function getArticleID( $flags = 0 ) {
1053 global $wgLinkCache;
1055 if ( $flags & GAID_FOR_UPDATE
) {
1056 $oldUpdate = $wgLinkCache->forUpdate( true );
1057 $this->mArticleID
= $wgLinkCache->addLinkObj( $this );
1058 $wgLinkCache->forUpdate( $oldUpdate );
1060 if ( -1 == $this->mArticleID
) {
1061 $this->mArticleID
= $wgLinkCache->addLinkObj( $this );
1064 return $this->mArticleID
;
1068 * This clears some fields in this object, and clears any associated
1069 * keys in the "bad links" section of $wgLinkCache.
1071 * - This is called from Article::insertNewArticle() to allow
1072 * loading of the new page_id. It's also called from
1073 * Article::doDeleteArticle()
1075 * @param int $newid the new Article ID
1078 function resetArticleID( $newid ) {
1079 global $wgLinkCache;
1080 $wgLinkCache->clearBadLink( $this->getPrefixedDBkey() );
1082 if ( 0 == $newid ) { $this->mArticleID
= -1; }
1083 else { $this->mArticleID
= $newid; }
1084 $this->mRestrictionsLoaded
= false;
1085 $this->mRestrictions
= array();
1089 * Updates page_touched for this page; called from LinksUpdate.php
1090 * @return bool true if the update succeded
1093 function invalidateCache() {
1094 if ( wfReadOnly() ) {
1098 $now = wfTimestampNow();
1099 $dbw =& wfGetDB( DB_MASTER
);
1100 $success = $dbw->update( 'page',
1102 'page_touched' => $dbw->timestamp()
1103 ), array( /* WHERE */
1104 'page_namespace' => $this->getNamespace() ,
1105 'page_title' => $this->getDBkey()
1106 ), 'Title::invalidateCache'
1112 * Prefix some arbitrary text with the namespace or interwiki prefix
1115 * @param string $name the text
1116 * @return string the prefixed text
1119 /* private */ function prefix( $name ) {
1123 if ( '' != $this->mInterwiki
) {
1124 $p = $this->mInterwiki
. ':';
1126 if ( 0 != $this->mNamespace
) {
1127 $p .= $wgContLang->getNsText( $this->mNamespace
) . ':';
1133 * Secure and split - main initialisation function for this object
1135 * Assumes that mDbkeyform has been set, and is urldecoded
1136 * and uses underscores, but not otherwise munged. This function
1137 * removes illegal characters, splits off the interwiki and
1138 * namespace prefixes, sets the other forms, and canonicalizes
1140 * @return bool true on success
1143 /* private */ function secureAndSplit() {
1144 global $wgContLang, $wgLocalInterwiki, $wgCapitalLinks;
1145 $fname = 'Title::secureAndSplit';
1146 wfProfileIn( $fname );
1149 static $rxTc = false;
1151 # % is needed as well
1152 $rxTc = '/[^' . Title
::legalChars() . ']|%[0-9A-Fa-f]{2}/S';
1155 $this->mInterwiki
= $this->mFragment
= '';
1156 $this->mNamespace
= $this->mDefaultNamespace
; # Usually NS_MAIN
1158 # Clean up whitespace
1160 $t = preg_replace( '/[ _]+/', '_', $this->mDbkeyform
);
1161 $t = trim( $t, '_' );
1164 wfProfileOut( $fname );
1168 if( false !== strpos( $t, UTF8_REPLACEMENT
) ) {
1169 # Contained illegal UTF-8 sequences or forbidden Unicode chars.
1170 wfProfileOut( $fname );
1174 $this->mDbkeyform
= $t;
1176 # Initial colon indicating main namespace
1177 if ( ':' == $t{0} ) {
1178 $r = substr( $t, 1 );
1179 $this->mNamespace
= NS_MAIN
;
1181 # Namespace or interwiki prefix
1184 if ( preg_match( "/^(.+?)_*:_*(.*)$/S", $t, $m ) ) {
1186 $lowerNs = strtolower( $p );
1187 if ( $ns = Namespace::getCanonicalIndex( $lowerNs ) ) {
1188 # Canonical namespace
1190 $this->mNamespace
= $ns;
1191 } elseif ( $ns = $wgContLang->getNsIndex( $lowerNs )) {
1192 # Ordinary namespace
1194 $this->mNamespace
= $ns;
1195 } elseif( $this->getInterwikiLink( $p ) ) {
1197 # Can't make a local interwiki link to an interwiki link.
1198 # That's just crazy!
1199 wfProfileOut( $fname );
1205 $this->mInterwiki
= $p;
1207 # Redundant interwiki prefix to the local wiki
1208 if ( 0 == strcasecmp( $this->mInterwiki
, $wgLocalInterwiki ) ) {
1210 # Can't have an empty self-link
1211 wfProfileOut( $fname );
1214 $this->mInterwiki
= '';
1216 # Do another namespace split...
1220 # If there's no recognized interwiki or namespace,
1221 # then let the colon expression be part of the title.
1228 # We already know that some pages won't be in the database!
1230 if ( '' != $this->mInterwiki ||
-1 == $this->mNamespace
) {
1231 $this->mArticleID
= 0;
1233 $f = strstr( $r, '#' );
1234 if ( false !== $f ) {
1235 $this->mFragment
= substr( $f, 1 );
1236 $r = substr( $r, 0, strlen( $r ) - strlen( $f ) );
1237 # remove whitespace again: prevents "Foo_bar_#"
1238 # becoming "Foo_bar_"
1239 $r = preg_replace( '/_*$/', '', $r );
1242 # Reject illegal characters.
1244 if( preg_match( $rxTc, $r ) ) {
1245 wfProfileOut( $fname );
1250 * Pages with "/./" or "/../" appearing in the URLs will
1251 * often be unreachable due to the way web browsers deal
1252 * with 'relative' URLs. Forbid them explicitly.
1254 if ( strpos( $r, '.' ) !== false &&
1255 ( $r === '.' ||
$r === '..' ||
1256 strpos( $r, './' ) === 0 ||
1257 strpos( $r, '../' ) === 0 ||
1258 strpos( $r, '/./' ) !== false ||
1259 strpos( $r, '/../' ) !== false ) )
1261 wfProfileOut( $fname );
1265 # We shouldn't need to query the DB for the size.
1266 #$maxSize = $dbr->textFieldSize( 'page', 'page_title' );
1267 if ( strlen( $r ) > 255 ) {
1268 wfProfileOut( $fname );
1273 * Normally, all wiki links are forced to have
1274 * an initial capital letter so [[foo]] and [[Foo]]
1275 * point to the same place.
1277 * Don't force it for interwikis, since the other
1278 * site might be case-sensitive.
1280 if( $wgCapitalLinks && $this->mInterwiki
== '') {
1281 $t = $wgContLang->ucfirst( $r );
1287 * Can't make a link to a namespace alone...
1288 * "empty" local links can only be self-links
1289 * with a fragment identifier.
1292 $this->mInterwiki
== '' &&
1293 $this->mNamespace
!= NS_MAIN
) {
1294 wfProfileOut( $fname );
1299 $this->mDbkeyform
= $t;
1300 $this->mUrlform
= wfUrlencode( $t );
1302 $this->mTextform
= str_replace( '_', ' ', $t );
1304 wfProfileOut( $fname );
1309 * Get a Title object associated with the talk page of this article
1310 * @return Title the object for the talk page
1313 function getTalkPage() {
1314 return Title
::makeTitle( Namespace::getTalk( $this->getNamespace() ), $this->getDBkey() );
1318 * Get a title object associated with the subject page of this
1321 * @return Title the object for the subject page
1324 function getSubjectPage() {
1325 return Title
::makeTitle( Namespace::getSubject( $this->getNamespace() ), $this->getDBkey() );
1329 * Get an array of Title objects linking to this Title
1330 * - Also stores the IDs in the link cache.
1332 * @param string $options may be FOR UPDATE
1333 * @return array the Title objects linking here
1336 function getLinksTo( $options = '' ) {
1337 global $wgLinkCache;
1338 $id = $this->getArticleID();
1341 $db =& wfGetDB( DB_MASTER
);
1343 $db =& wfGetDB( DB_SLAVE
);
1345 $page = $db->tableName( 'page' );
1346 $links = $db->tableName( 'links' );
1348 $sql = "SELECT page_namespace,page_title,page_id FROM $page,$links WHERE l_from=page_id AND l_to={$id} $options";
1349 $res = $db->query( $sql, 'Title::getLinksTo' );
1351 if ( $db->numRows( $res ) ) {
1352 while ( $row = $db->fetchObject( $res ) ) {
1353 if ( $titleObj = Title
::makeTitle( $row->page_namespace
, $row->page_title
) ) {
1354 $wgLinkCache->addGoodLink( $row->page_id
, $titleObj->getPrefixedDBkey() );
1355 $retVal[] = $titleObj;
1359 $db->freeResult( $res );
1364 * Get an array of Title objects linking to this non-existent title.
1365 * - Also stores the IDs in the link cache.
1367 * @param string $options may be FOR UPDATE
1368 * @return array the Title objects linking here
1371 function getBrokenLinksTo( $options = '' ) {
1372 global $wgLinkCache;
1375 $db =& wfGetDB( DB_MASTER
);
1377 $db =& wfGetDB( DB_SLAVE
);
1379 $page = $db->tableName( 'page' );
1380 $brokenlinks = $db->tableName( 'brokenlinks' );
1381 $encTitle = $db->strencode( $this->getPrefixedDBkey() );
1383 $sql = "SELECT page_namespace,page_title,page_id FROM $brokenlinks,$page " .
1384 "WHERE bl_from=page_id AND bl_to='$encTitle' $options";
1385 $res = $db->query( $sql, "Title::getBrokenLinksTo" );
1387 if ( $db->numRows( $res ) ) {
1388 while ( $row = $db->fetchObject( $res ) ) {
1389 $titleObj = Title
::makeTitle( $row->page_namespace
, $row->page_title
);
1390 $wgLinkCache->addGoodLink( $row->page_id
, $titleObj->getPrefixedDBkey() );
1391 $retVal[] = $titleObj;
1394 $db->freeResult( $res );
1400 * Get an array of Title objects referring to non-existent articles linked from this page
1402 * @param string $options may be FOR UPDATE
1403 * @return array the Title objects
1406 function getBrokenLinksFrom( $options = '' ) {
1407 global $wgLinkCache;
1410 $db =& wfGetDB( DB_MASTER
);
1412 $db =& wfGetDB( DB_SLAVE
);
1414 $page = $db->tableName( 'page' );
1415 $brokenlinks = $db->tableName( 'brokenlinks' );
1416 $id = $this->getArticleID();
1418 $sql = "SELECT bl_to FROM $brokenlinks WHERE bl_from=$id $options";
1419 $res = $db->query( $sql, "Title::getBrokenLinksFrom" );
1421 if ( $db->numRows( $res ) ) {
1422 while ( $row = $db->fetchObject( $res ) ) {
1423 $retVal[] = Title
::newFromText( $row->bl_to
);
1426 $db->freeResult( $res );
1432 * Get a list of URLs to purge from the Squid cache when this
1435 * @return array the URLs
1438 function getSquidURLs() {
1440 $this->getInternalURL(),
1441 $this->getInternalURL( 'action=history' )
1446 * Move this page without authentication
1447 * @param Title &$nt the new page Title
1450 function moveNoAuth( &$nt ) {
1451 return $this->moveTo( $nt, false );
1455 * Check whether a given move operation would be valid.
1456 * Returns true if ok, or a message key string for an error message
1457 * if invalid. (Scarrrrry ugly interface this.)
1458 * @param Title &$nt the new title
1459 * @param bool $auth indicates whether $wgUser's permissions
1461 * @return mixed true on success, message name on failure
1464 function isValidMoveOperation( &$nt, $auth = true, $reason = '' ) {
1466 if( !$this or !$nt ) {
1467 return 'badtitletext';
1469 if( $this->equals( $nt ) ) {
1472 if( !$this->isMovable() ||
!$nt->isMovable() ) {
1473 return 'immobile_namespace';
1476 $fname = 'Title::move';
1477 $oldid = $this->getArticleID();
1478 $newid = $nt->getArticleID();
1480 if ( strlen( $nt->getDBkey() ) < 1 ) {
1481 return 'articleexists';
1483 if ( ( '' == $this->getDBkey() ) ||
1485 ( '' == $nt->getDBkey() ) ) {
1486 return 'badarticleerror';
1490 !$this->userCanEdit() ||
!$nt->userCanEdit() ||
1491 !$this->userCanMove() ||
!$nt->userCanMove() ) ) {
1492 return 'protectedpage';
1495 # The move is allowed only if (1) the target doesn't exist, or
1496 # (2) the target is a redirect to the source, and has no history
1497 # (so we can undo bad moves right after they're done).
1499 if ( 0 != $newid ) { # Target exists; check for validity
1500 if ( ! $this->isValidMoveTarget( $nt ) ) {
1501 return 'articleexists';
1508 * Move a title to a new location
1509 * @param Title &$nt the new title
1510 * @param bool $auth indicates whether $wgUser's permissions
1512 * @return mixed true on success, message name on failure
1515 function moveTo( &$nt, $auth = true, $reason = '' ) {
1516 $err = $this->isValidMoveOperation( $nt, $auth, $reason );
1517 if( is_string( $err ) ) {
1520 if( $nt->exists() ) {
1521 $this->moveOverExistingRedirect( $nt, $reason );
1522 } else { # Target didn't exist, do normal move.
1523 $this->moveToNewTitle( $nt, $newid, $reason );
1526 # Fixing category links (those without piped 'alternate' names) to be sorted under the new title
1528 $dbw =& wfGetDB( DB_MASTER
);
1529 $categorylinks = $dbw->tableName( 'categorylinks' );
1530 $sql = "UPDATE $categorylinks SET cl_sortkey=" . $dbw->addQuotes( $nt->getPrefixedText() ) .
1531 " WHERE cl_from=" . $dbw->addQuotes( $this->getArticleID() ) .
1532 " AND cl_sortkey=" . $dbw->addQuotes( $this->getPrefixedText() );
1533 $dbw->query( $sql, 'SpecialMovepage::doSubmit' );
1537 $oldnamespace = $this->getNamespace() & ~
1;
1538 $newnamespace = $nt->getNamespace() & ~
1;
1539 $oldtitle = $this->getDBkey();
1540 $newtitle = $nt->getDBkey();
1542 if( $oldnamespace != $newnamespace ||
$oldtitle != $newtitle ) {
1543 WatchedItem
::duplicateEntries( $this, $nt );
1546 # Update search engine
1547 $u = new SearchUpdate( $oldid, $nt->getPrefixedDBkey() );
1549 $u = new SearchUpdate( $newid, $this->getPrefixedDBkey(), '' );
1552 wfRunHooks( 'TitleMoveComplete', array(&$this, &$nt, &$wgUser, $oldid, $newid) );
1557 * Move page to a title which is at present a redirect to the
1560 * @param Title &$nt the page to move to, which should currently
1564 /* private */ function moveOverExistingRedirect( &$nt, $reason = '' ) {
1565 global $wgUser, $wgLinkCache, $wgUseSquid, $wgMwRedir;
1566 $fname = 'Title::moveOverExistingRedirect';
1567 $comment = wfMsgForContent( '1movedto2', $this->getPrefixedText(), $nt->getPrefixedText() );
1570 $comment .= ": $reason";
1573 $now = wfTimestampNow();
1575 $newid = $nt->getArticleID();
1576 $oldid = $this->getArticleID();
1577 $dbw =& wfGetDB( DB_MASTER
);
1578 $links = $dbw->tableName( 'links' );
1580 # Delete the old redirect. We don't save it to history since
1581 # by definition if we've got here it's rather uninteresting.
1582 # We have to remove it so that the next step doesn't trigger
1583 # a conflict on the unique namespace+title index...
1584 $dbw->delete( 'page', array( 'page_id' => $newid ), $fname );
1586 # Save a null revision in the page's history notifying of the move
1587 $nullRevision = Revision
::newNullRevision( $dbw, $oldid,
1588 wfMsg( '1movedto2', $this->getPrefixedText(), $nt->getPrefixedText() ),
1590 $nullRevId = $nullRevision->insertOn( $dbw );
1592 # Change the name of the target page:
1593 $dbw->update( 'page',
1595 'page_touched' => $dbw->timestamp($now),
1596 'page_namespace' => $nt->getNamespace(),
1597 'page_title' => $nt->getDBkey(),
1598 'page_latest' => $nullRevId,
1600 /* WHERE */ array( 'page_id' => $oldid ),
1603 $wgLinkCache->clearLink( $nt->getPrefixedDBkey() );
1605 # Recreate the redirect, this time in the other direction.
1606 $redirectText = $wgMwRedir->getSynonym( 0 ) . ' [[' . $nt->getPrefixedText() . "]]\n";
1607 $redirectArticle = new Article( $this );
1608 $newid = $redirectArticle->insertOn( $dbw );
1609 $redirectRevision = new Revision( array(
1611 'comment' => $comment,
1612 'text' => $redirectText ) );
1613 $revid = $redirectRevision->insertOn( $dbw );
1614 $redirectArticle->updateRevisionOn( $dbw, $redirectRevision, 0 );
1615 $wgLinkCache->clearLink( $this->getPrefixedDBkey() );
1618 $log = new LogPage( 'move' );
1619 $log->addEntry( 'move_redir', $this, $reason, array( 1 => $nt->getPrefixedText() ) );
1623 # Load titles and IDs
1624 $linksToOld = $this->getLinksTo( 'FOR UPDATE' );
1625 $linksToNew = $nt->getLinksTo( 'FOR UPDATE' );
1628 $sql = "DELETE FROM $links WHERE l_to=$oldid OR l_to=$newid";
1629 $dbw->query( $sql, $fname );
1632 if ( count( $linksToOld ) ||
count( $linksToNew )) {
1633 $sql = "INSERT INTO $links (l_from,l_to) VALUES ";
1636 # Insert links to old title
1637 foreach ( $linksToOld as $linkTitle ) {
1643 $id = $linkTitle->getArticleID();
1644 $sql .= "($id,$newid)";
1647 # Insert links to new title
1648 foreach ( $linksToNew as $linkTitle ) {
1654 $id = $linkTitle->getArticleID();
1655 $sql .= "($id, $oldid)";
1658 $dbw->query( $sql, $fname );
1661 # Now, we record the link from the redirect to the new title.
1662 # It should have no other outgoing links...
1663 $dbw->delete( 'links', array( 'l_from' => $newid ) );
1664 $dbw->insert( 'links', array( 'l_from' => $newid, 'l_to' => $oldid ) );
1667 LinkCache
::linksccClearLinksTo( $oldid );
1668 LinkCache
::linksccClearLinksTo( $newid );
1671 if ( $wgUseSquid ) {
1672 $urls = array_merge( $nt->getSquidURLs(), $this->getSquidURLs() );
1673 $u = new SquidUpdate( $urls );
1679 * Move page to non-existing title.
1680 * @param Title &$nt the new Title
1681 * @param int &$newid set to be the new article ID
1684 /* private */ function moveToNewTitle( &$nt, &$newid, $reason = '' ) {
1685 global $wgUser, $wgLinkCache, $wgUseSquid;
1687 $fname = 'MovePageForm::moveToNewTitle';
1688 $comment = wfMsgForContent( '1movedto2', $this->getPrefixedText(), $nt->getPrefixedText() );
1690 $comment .= ": $reason";
1693 $newid = $nt->getArticleID();
1694 $oldid = $this->getArticleID();
1695 $dbw =& wfGetDB( DB_MASTER
);
1696 $now = $dbw->timestamp();
1700 # Save a null revision in the page's history notifying of the move
1701 $nullRevision = Revision
::newNullRevision( $dbw, $oldid,
1702 wfMsg( '1movedto2', $this->getPrefixedText(), $nt->getPrefixedText() ),
1704 $nullRevId = $nullRevision->insertOn( $dbw );
1707 $dbw->update( 'page',
1709 'page_touched' => $now,
1710 'page_namespace' => $nt->getNamespace(),
1711 'page_title' => $nt->getDBkey(),
1712 'page_latest' => $nullRevId,
1714 /* WHERE */ array( 'page_id' => $oldid ),
1718 $wgLinkCache->clearLink( $nt->getPrefixedDBkey() );
1721 $redirectText = $wgMwRedir->getSynonym( 0 ) . ' [[' . $nt->getPrefixedText() . "]]\n";
1722 $redirectArticle = new Article( $this );
1723 $newid = $redirectArticle->insertOn( $dbw );
1724 $redirectRevision = new Revision( array(
1726 'comment' => $comment,
1727 'text' => $redirectText ) );
1728 $revid = $redirectRevision->insertOn( $dbw );
1729 $redirectArticle->updateRevisionOn( $dbw, $redirectRevision, 0 );
1730 $wgLinkCache->clearLink( $this->getPrefixedDBkey() );
1733 $log = new LogPage( 'move' );
1734 $log->addEntry( 'move', $this, $reason, array( 1 => $nt->getPrefixedText()) );
1736 # Purge squid and linkscc as per article creation
1737 Article
::onArticleCreate( $nt );
1739 # Any text links to the old title must be reassigned to the redirect
1740 $dbw->update( 'links', array( 'l_to' => $newid ), array( 'l_to' => $oldid ), $fname );
1741 LinkCache
::linksccClearLinksTo( $oldid );
1743 # Record the just-created redirect's linking to the page
1744 $dbw->insert( 'links', array( 'l_from' => $newid, 'l_to' => $oldid ), $fname );
1746 # Non-existent target may have had broken links to it; these must
1747 # now be removed and made into good links.
1748 $update = new LinksUpdate( $oldid, $nt->getPrefixedDBkey() );
1749 $update->fixBrokenLinks();
1751 # Purge old title from squid
1752 # The new title, and links to the new title, are purged in Article::onArticleCreate()
1753 $titles = $nt->getLinksTo();
1754 if ( $wgUseSquid ) {
1755 $urls = $this->getSquidURLs();
1756 foreach ( $titles as $linkTitle ) {
1757 $urls[] = $linkTitle->getInternalURL();
1759 $u = new SquidUpdate( $urls );
1765 * Checks if $this can be moved to a given Title
1766 * - Selects for update, so don't call it unless you mean business
1768 * @param Title &$nt the new title to check
1771 function isValidMoveTarget( $nt ) {
1773 $fname = 'Title::isValidMoveTarget';
1774 $dbw =& wfGetDB( DB_MASTER
);
1777 $id = $nt->getArticleID();
1778 $obj = $dbw->selectRow( array( 'page', 'revision', 'text'),
1779 array( 'page_is_redirect','old_text' ),
1780 array( 'page_id' => $id, 'page_latest=rev_id', 'rev_text_id=old_id' ),
1781 $fname, 'FOR UPDATE' );
1783 if ( !$obj ||
0 == $obj->page_is_redirect
) {
1788 # Does the redirect point to the source?
1789 if ( preg_match( "/\\[\\[\\s*([^\\]\\|]*)]]/", $obj->old_text
, $m ) ) {
1790 $redirTitle = Title
::newFromText( $m[1] );
1791 if( !is_object( $redirTitle ) ||
1792 $redirTitle->getPrefixedDBkey() != $this->getPrefixedDBkey() ) {
1797 # Does the article have a history?
1798 $row = $dbw->selectRow( array( 'page', 'revision'),
1800 array( 'page_namespace' => $nt->getNamespace(),
1801 'page_title' => $nt->getDBkey(),
1802 'page_id=rev_page AND page_latest != rev_id'
1803 ), $fname, 'FOR UPDATE'
1806 # Return true if there was no history
1807 return $row === false;
1811 * Create a redirect; fails if the title already exists; does
1814 * @param Title $dest the destination of the redirect
1815 * @param string $comment the comment string describing the move
1816 * @return bool true on success
1819 function createRedirect( $dest, $comment ) {
1821 if ( $this->getArticleID() ) {
1825 $fname = 'Title::createRedirect';
1826 $dbw =& wfGetDB( DB_MASTER
);
1828 $article = new Article( $this );
1829 $newid = $article->insertOn( $dbw );
1830 $revision = new Revision( array(
1832 'comment' => $comment,
1833 'text' => "#REDIRECT [[" . $dest->getPrefixedText() . "]]\n",
1835 $revisionId = $revision->insertOn( $dbw );
1836 $article->updateRevisionOn( $dbw, $revision, 0 );
1839 if ( $dest->getArticleID() ) {
1840 $dbw->insert( 'links',
1842 'l_to' => $dest->getArticleID(),
1847 $dbw->insert( 'brokenlinks',
1849 'bl_to' => $dest->getPrefixedDBkey(),
1855 Article
::onArticleCreate( $this );
1860 * Get categories to which this Title belongs and return an array of
1861 * categories' names.
1863 * @return array an array of parents in the form:
1864 * $parent => $currentarticle
1867 function getParentCategories() {
1868 global $wgContLang,$wgUser;
1870 $titlekey = $this->getArticleId();
1871 $sk =& $wgUser->getSkin();
1873 $dbr =& wfGetDB( DB_SLAVE
);
1874 $categorylinks = $dbr->tableName( 'categorylinks' );
1877 $sql = "SELECT * FROM $categorylinks"
1878 ." WHERE cl_from='$titlekey'"
1879 ." AND cl_from <> '0'"
1880 ." ORDER BY cl_sortkey";
1882 $res = $dbr->query ( $sql ) ;
1884 if($dbr->numRows($res) > 0) {
1885 while ( $x = $dbr->fetchObject ( $res ) )
1886 //$data[] = Title::newFromText($wgContLang->getNSText ( NS_CATEGORY ).':'.$x->cl_to);
1887 $data[$wgContLang->getNSText ( NS_CATEGORY
).':'.$x->cl_to
] = $this->getFullText();
1888 $dbr->freeResult ( $res ) ;
1896 * Get a tree of parent categories
1897 * @param array $children an array with the children in the keys, to check for circular refs
1901 function getParentCategoryTree( $children = array() ) {
1902 $parents = $this->getParentCategories();
1904 if($parents != '') {
1905 foreach($parents as $parent => $current)
1907 if ( array_key_exists( $parent, $children ) ) {
1908 # Circular reference
1909 $stack[$parent] = array();
1911 $nt = Title
::newFromText($parent);
1912 $stack[$parent] = $nt->getParentCategoryTree( $children +
array($parent => 1) );
1923 * Get an associative array for selecting this title from
1929 function curCond() {
1930 wfDebugDieBacktrace( 'curCond called' );
1931 return array( 'cur_namespace' => $this->mNamespace
, 'cur_title' => $this->mDbkeyform
);
1935 * Get an associative array for selecting this title from the
1941 function oldCond() {
1942 wfDebugDieBacktrace( 'oldCond called' );
1943 return array( 'old_namespace' => $this->mNamespace
, 'old_title' => $this->mDbkeyform
);
1947 * Get the revision ID of the previous revision
1949 * @param integer $revision Revision ID. Get the revision that was before this one.
1950 * @return interger $oldrevision|false
1952 function getPreviousRevisionID( $revision ) {
1953 $dbr =& wfGetDB( DB_SLAVE
);
1954 return $dbr->selectField( 'revision', 'rev_id',
1955 'rev_page=' . IntVal( $this->getArticleId() ) .
1956 ' AND rev_id<' . IntVal( $revision ) . ' ORDER BY rev_id DESC' );
1960 * Get the revision ID of the next revision
1962 * @param integer $revision Revision ID. Get the revision that was after this one.
1963 * @return interger $oldrevision|false
1965 function getNextRevisionID( $revision ) {
1966 $dbr =& wfGetDB( DB_SLAVE
);
1967 return $dbr->selectField( 'revision', 'rev_id',
1968 'rev_page=' . IntVal( $this->getArticleId() ) .
1969 ' AND rev_id>' . IntVal( $revision ) . ' ORDER BY rev_id' );
1973 * Compare with another title.
1975 * @param Title $title
1978 function equals( &$title ) {
1979 return $this->getInterwiki() == $title->getInterwiki()
1980 && $this->getNamespace() == $title->getNamespace()
1981 && $this->getDbkey() == $title->getDbkey();
1985 * Check if page exists
1989 return $this->getArticleId() != 0;