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 return $n == '' ?
$title : "$n:$title";
383 * Returns the URL associated with an interwiki prefix
384 * @param string $key the interwiki prefix (e.g. "MeatBall")
385 * @return the associated URL, containing "$1", which should be
386 * replaced by an article title
390 function getInterwikiLink( $key ) {
391 global $wgMemc, $wgDBname, $wgInterwikiExpiry, $wgTitleInterwikiCache;
392 $fname = 'Title::getInterwikiLink';
394 wfProfileIn( $fname );
396 $k = $wgDBname.':interwiki:'.$key;
397 if( array_key_exists( $k, $wgTitleInterwikiCache ) ) {
398 wfProfileOut( $fname );
399 return $wgTitleInterwikiCache[$k]->iw_url
;
402 $s = $wgMemc->get( $k );
403 # Ignore old keys with no iw_local
404 if( $s && isset( $s->iw_local
) ) {
405 $wgTitleInterwikiCache[$k] = $s;
406 wfProfileOut( $fname );
410 $dbr =& wfGetDB( DB_SLAVE
);
411 $res = $dbr->select( 'interwiki',
412 array( 'iw_url', 'iw_local' ),
413 array( 'iw_prefix' => $key ), $fname );
415 wfProfileOut( $fname );
419 $s = $dbr->fetchObject( $res );
421 # Cache non-existence: create a blank object and save it to memcached
426 $wgMemc->set( $k, $s, $wgInterwikiExpiry );
427 $wgTitleInterwikiCache[$k] = $s;
429 wfProfileOut( $fname );
434 * Determine whether the object refers to a page within
437 * @return bool TRUE if this is an in-project interwiki link
438 * or a wikilink, FALSE otherwise
442 global $wgTitleInterwikiCache, $wgDBname;
444 if ( $this->mInterwiki
!= '' ) {
445 # Make sure key is loaded into cache
446 $this->getInterwikiLink( $this->mInterwiki
);
447 $k = $wgDBname.':interwiki:' . $this->mInterwiki
;
448 return (bool)($wgTitleInterwikiCache[$k]->iw_local
);
455 * Update the page_touched field for an array of title objects
456 * @todo Inefficient unless the IDs are already loaded into the
458 * @param array $titles an array of Title objects to be touched
459 * @param string $timestamp the timestamp to use instead of the
460 * default current time
464 /* static */ function touchArray( $titles, $timestamp = '' ) {
465 if ( count( $titles ) == 0 ) {
468 $dbw =& wfGetDB( DB_MASTER
);
469 if ( $timestamp == '' ) {
470 $timestamp = $dbw->timestamp();
472 $page = $dbw->tableName( 'page' );
473 $sql = "UPDATE $page SET page_touched='{$timestamp}' WHERE page_id IN (";
476 foreach ( $titles as $title ) {
481 $sql .= $title->getArticleID();
485 $dbw->query( $sql, 'Title::touchArray' );
489 #----------------------------------------------------------------------------
491 #----------------------------------------------------------------------------
493 /** Simple accessors */
495 * Get the text form (spaces not underscores) of the main part
499 function getText() { return $this->mTextform
; }
501 * Get the URL-encoded form of the main part
505 function getPartialURL() { return $this->mUrlform
; }
507 * Get the main part with underscores
511 function getDBkey() { return $this->mDbkeyform
; }
513 * Get the namespace index, i.e. one of the NS_xxxx constants
517 function getNamespace() { return $this->mNamespace
; }
519 * Get the interwiki prefix (or null string)
523 function getInterwiki() { return $this->mInterwiki
; }
525 * Get the Title fragment (i.e. the bit after the #)
529 function getFragment() { return $this->mFragment
; }
531 * Get the default namespace index, for when there is no namespace
535 function getDefaultNamespace() { return $this->mDefaultNamespace
; }
538 * Get title for search index
539 * @return string a stripped-down title string ready for the
542 function getIndexTitle() {
543 return Title
::indexTitle( $this->mNamespace
, $this->mTextform
);
547 * Get the prefixed database key form
548 * @return string the prefixed title, with underscores and
549 * any interwiki and namespace prefixes
552 function getPrefixedDBkey() {
553 $s = $this->prefix( $this->mDbkeyform
);
554 $s = str_replace( ' ', '_', $s );
559 * Get the prefixed title with spaces.
560 * This is the form usually used for display
561 * @return string the prefixed title, with spaces
564 function getPrefixedText() {
566 if ( empty( $this->mPrefixedText
) ) {
567 $s = $this->prefix( $this->mTextform
);
568 $s = str_replace( '_', ' ', $s );
569 $this->mPrefixedText
= $s;
571 return $this->mPrefixedText
;
575 * Get the prefixed title with spaces, plus any fragment
576 * (part beginning with '#')
577 * @return string the prefixed title, with spaces and
578 * the fragment, including '#'
581 function getFullText() {
583 $text = $this->getPrefixedText();
584 if( '' != $this->mFragment
) {
585 $text .= '#' . $this->mFragment
;
591 * Get a URL-encoded title (not an actual URL) including interwiki
592 * @return string the URL-encoded form
595 function getPrefixedURL() {
596 $s = $this->prefix( $this->mDbkeyform
);
597 $s = str_replace( ' ', '_', $s );
599 $s = wfUrlencode ( $s ) ;
601 # Cleaning up URL to make it look nice -- is this safe?
602 $s = str_replace( '%28', '(', $s );
603 $s = str_replace( '%29', ')', $s );
609 * Get a real URL referring to this title, with interwiki link and
612 * @param string $query an optional query string, not used
613 * for interwiki links
614 * @return string the URL
617 function getFullURL( $query = '' ) {
618 global $wgContLang, $wgServer, $wgScript;
620 if ( '' == $this->mInterwiki
) {
621 return $wgServer . $this->getLocalUrl( $query );
623 $baseUrl = $this->getInterwikiLink( $this->mInterwiki
);
624 $namespace = $wgContLang->getNsText( $this->mNamespace
);
625 if ( '' != $namespace ) {
626 # Can this actually happen? Interwikis shouldn't be parsed.
629 $url = str_replace( '$1', $namespace . $this->mUrlform
, $baseUrl );
631 if( false === strpos( $url, '?' ) ) {
638 if ( '' != $this->mFragment
) {
639 $url .= '#' . $this->mFragment
;
646 * Get a relative directory for putting an HTML version of this article into
648 function getHashedDirectory() {
649 $dbkey = $this->getPrefixedDBkey();
650 if ( strlen( $dbkey ) < 2 ) {
651 $dbkey = sprintf( "%2s", $dbkey );
654 for ( $i=0; $i<=1; $i++
) {
658 if ( ord( $dbkey{$i} ) < 128 && ord( $dbkey{$i} ) > 32 ) {
659 $dir .= strtolower( $dbkey{$i} );
661 $dir .= sprintf( "%02X", ord( $dbkey{$i} ) );
667 function getHashedFilename() {
668 $dbkey = $this->getPrefixedDBkey();
669 $dir = $this->getHashedDirectory();
670 $friendlyName = strtr( $dbkey, '/\\:*?"<>|', '_________' );
671 return "$dir/$friendlyName.html";
675 * Get a URL with no fragment or server name
676 * @param string $query an optional query string; if not specified,
677 * $wgArticlePath will be used.
678 * @return string the URL
681 function getLocalURL( $query = '' ) {
682 global $wgLang, $wgArticlePath, $wgScript, $wgMakeDumpLinks;
684 if ( $this->isExternal() ) {
685 return $this->getFullURL();
688 $dbkey = wfUrlencode( $this->getPrefixedDBkey() );
689 if ( $wgMakeDumpLinks ) {
690 $url = str_replace( '$1', wfUrlencode( $this->getHashedFilename() ), $wgArticlePath );
691 } elseif ( $query == '' ) {
692 $url = str_replace( '$1', $dbkey, $wgArticlePath );
694 if( preg_match( '/^(.*&|)action=([^&]*)(&(.*)|)$/', $query, $matches ) ) {
695 global $wgActionPaths;
696 $action = urldecode( $matches[2] );
697 if( isset( $wgActionPaths[$action] ) ) {
698 $query = $matches[1];
699 if( isset( $matches[4] ) ) $query .= $matches[4];
700 $url = str_replace( '$1', $dbkey, $wgActionPaths[$action] );
701 if( $query != '' ) $url .= '?' . $query;
705 if ( $query == '-' ) {
708 $url = "{$wgScript}?title={$dbkey}&{$query}";
714 * Get an HTML-escaped version of the URL form, suitable for
715 * using in a link, without a server name or fragment
716 * @param string $query an optional query string
717 * @return string the URL
720 function escapeLocalURL( $query = '' ) {
721 return htmlspecialchars( $this->getLocalURL( $query ) );
725 * Get an HTML-escaped version of the URL form, suitable for
726 * using in a link, including the server name and fragment
728 * @return string the URL
729 * @param string $query an optional query string
732 function escapeFullURL( $query = '' ) {
733 return htmlspecialchars( $this->getFullURL( $query ) );
737 * Get the URL form for an internal link.
738 * - Used in various Squid-related code, in case we have a different
739 * internal hostname for the server from the exposed one.
741 * @param string $query an optional query string
742 * @return string the URL
745 function getInternalURL( $query = '' ) {
746 global $wgInternalServer;
747 return $wgInternalServer . $this->getLocalURL( $query );
751 * Get the edit URL for this Title
752 * @return string the URL, or a null string if this is an
756 function getEditURL() {
757 global $wgServer, $wgScript;
759 if ( '' != $this->mInterwiki
) { return ''; }
760 $s = $this->getLocalURL( 'action=edit' );
766 * Get the HTML-escaped displayable text form.
767 * Used for the title field in <a> tags.
768 * @return string the text, including any prefixes
771 function getEscapedText() {
772 return htmlspecialchars( $this->getPrefixedText() );
776 * Is this Title interwiki?
780 function isExternal() { return ( '' != $this->mInterwiki
); }
783 * Does the title correspond to a protected article?
784 * @param string $what the action the page is protected from,
785 * by default checks move and edit
789 function isProtected($action = '') {
790 if ( -1 == $this->mNamespace
) { return true; }
791 if($action == 'edit' ||
$action == '') {
792 $a = $this->getRestrictions("edit");
793 if ( in_array( 'sysop', $a ) ) { return true; }
795 if($action == 'move' ||
$action == '') {
796 $a = $this->getRestrictions("move");
797 if ( in_array( 'sysop', $a ) ) { return true; }
803 * Is $wgUser is watching this page?
807 function userIsWatching() {
810 if ( -1 == $this->mNamespace
) { return false; }
811 if ( 0 == $wgUser->getID() ) { return false; }
813 return $wgUser->isWatched( $this );
817 * Is $wgUser perform $action this page?
818 * @param string $action action that permission needs to be checked for
822 function userCan($action) {
823 $fname = 'Title::userCanEdit';
824 wfProfileIn( $fname );
827 if( NS_SPECIAL
== $this->mNamespace
) {
828 wfProfileOut( $fname );
831 if( NS_MEDIAWIKI
== $this->mNamespace
&&
832 !$wgUser->isAllowed('editinterface') ) {
833 wfProfileOut( $fname );
836 if( $this->mDbkeyform
== '_' ) {
837 # FIXME: Is this necessary? Shouldn't be allowed anyway...
838 wfProfileOut( $fname );
842 # protect global styles and js
843 if ( NS_MEDIAWIKI
== $this->mNamespace
844 && preg_match("/\\.(css|js)$/", $this->mTextform
)
845 && !$wgUser->isAllowed('editinterface') ) {
846 wfProfileOut( $fname );
850 # protect css/js subpages of user pages
851 # XXX: this might be better using restrictions
852 # XXX: Find a way to work around the php bug that prevents using $this->userCanEditCssJsSubpage() from working
853 if( NS_USER
== $this->mNamespace
854 && preg_match("/\\.(css|js)$/", $this->mTextform
)
855 && !$wgUser->isAllowed('editinterface')
856 && !preg_match('/^'.preg_quote($wgUser->getName(), '/').'\//', $this->mTextform
) ) {
857 wfProfileOut( $fname );
861 foreach( $this->getRestrictions($action) as $right ) {
862 if( '' != $right && !$wgUser->isAllowed( $right ) ) {
863 wfProfileOut( $fname );
868 if( $action == 'move' && !$this->isMovable() ) {
869 wfProfileOut( $fname );
873 wfProfileOut( $fname );
878 * Can $wgUser edit this page?
882 function userCanEdit() {
883 return $this->userCan('edit');
887 * Can $wgUser move this page?
891 function userCanMove() {
892 return $this->userCan('move');
896 * Would anybody with sufficient privileges be able to move this page?
897 * Some pages just aren't movable.
902 function isMovable() {
903 return Namespace::isMovable( $this->getNamespace() )
904 && $this->getInterwiki() == '';
908 * Can $wgUser read this page?
912 function userCanRead() {
915 if( $wgUser->isAllowed('read') ) {
918 global $wgWhitelistRead;
920 /** If anon users can create an account,
921 they need to reach the login page first! */
922 if( $wgUser->isAllowed( 'createaccount' )
923 && $this->mId
== NS_SPECIAL
924 && $this->getText() == 'Userlogin' ) {
928 /** some pages are explicitly allowed */
929 $name = $this->getPrefixedText();
930 if( in_array( $name, $wgWhitelistRead ) ) {
934 # Compatibility with old settings
935 if( $this->getNamespace() == NS_MAIN
) {
936 if( in_array( ':' . $name, $wgWhitelistRead ) ) {
945 * Is this a talk page of some sort?
949 function isTalkPage() {
950 return Namespace::isTalk( $this->getNamespace() );
954 * Is this a .css or .js subpage of a user page?
958 function isCssJsSubpage() {
959 return ( NS_USER
== $this->mNamespace
and preg_match("/\\.(css|js)$/", $this->mTextform
) );
962 * Is this a .css subpage of a user page?
966 function isCssSubpage() {
967 return ( NS_USER
== $this->mNamespace
and preg_match("/\\.css$/", $this->mTextform
) );
970 * Is this a .js subpage of a user page?
974 function isJsSubpage() {
975 return ( NS_USER
== $this->mNamespace
and preg_match("/\\.js$/", $this->mTextform
) );
978 * Protect css/js subpages of user pages: can $wgUser edit
982 * @todo XXX: this might be better using restrictions
985 function userCanEditCssJsSubpage() {
987 return ( $wgUser->isAllowed('editinterface') or preg_match('/^'.preg_quote($wgUser->getName(), '/').'\//', $this->mTextform
) );
991 * Loads a string into mRestrictions array
992 * @param string $res restrictions in string format
995 function loadRestrictions( $res ) {
996 foreach( explode( ':', trim( $res ) ) as $restrict ) {
997 $temp = explode( '=', trim( $restrict ) );
998 if(count($temp) == 1) {
999 // old format should be treated as edit/move restriction
1000 $this->mRestrictions
["edit"] = explode( ',', trim( $temp[0] ) );
1001 $this->mRestrictions
["move"] = explode( ',', trim( $temp[0] ) );
1003 $this->mRestrictions
[$temp[0]] = explode( ',', trim( $temp[1] ) );
1006 $this->mRestrictionsLoaded
= true;
1010 * Accessor/initialisation for mRestrictions
1011 * @param string $action action that permission needs to be checked for
1012 * @return array the array of groups allowed to edit this article
1015 function getRestrictions($action) {
1016 $id = $this->getArticleID();
1017 if ( 0 == $id ) { return array(); }
1019 if ( ! $this->mRestrictionsLoaded
) {
1020 $dbr =& wfGetDB( DB_SLAVE
);
1021 $res = $dbr->selectField( 'page', 'page_restrictions', 'page_id='.$id );
1022 $this->loadRestrictions( $res );
1024 if( isset( $this->mRestrictions
[$action] ) ) {
1025 return $this->mRestrictions
[$action];
1031 * Is there a version of this page in the deletion archive?
1032 * @return int the number of archived revisions
1035 function isDeleted() {
1036 $fname = 'Title::isDeleted';
1037 $dbr =& wfGetDB( DB_SLAVE
);
1038 $n = $dbr->selectField( 'archive', 'COUNT(*)', array( 'ar_namespace' => $this->getNamespace(),
1039 'ar_title' => $this->getDBkey() ), $fname );
1044 * Get the article ID for this Title from the link cache,
1045 * adding it if necessary
1046 * @param int $flags a bit field; may be GAID_FOR_UPDATE to select
1048 * @return int the ID
1051 function getArticleID( $flags = 0 ) {
1052 global $wgLinkCache;
1054 if ( $flags & GAID_FOR_UPDATE
) {
1055 $oldUpdate = $wgLinkCache->forUpdate( true );
1056 $this->mArticleID
= $wgLinkCache->addLinkObj( $this );
1057 $wgLinkCache->forUpdate( $oldUpdate );
1059 if ( -1 == $this->mArticleID
) {
1060 $this->mArticleID
= $wgLinkCache->addLinkObj( $this );
1063 return $this->mArticleID
;
1067 * This clears some fields in this object, and clears any associated
1068 * keys in the "bad links" section of $wgLinkCache.
1070 * - This is called from Article::insertNewArticle() to allow
1071 * loading of the new page_id. It's also called from
1072 * Article::doDeleteArticle()
1074 * @param int $newid the new Article ID
1077 function resetArticleID( $newid ) {
1078 global $wgLinkCache;
1079 $wgLinkCache->clearBadLink( $this->getPrefixedDBkey() );
1081 if ( 0 == $newid ) { $this->mArticleID
= -1; }
1082 else { $this->mArticleID
= $newid; }
1083 $this->mRestrictionsLoaded
= false;
1084 $this->mRestrictions
= array();
1088 * Updates page_touched for this page; called from LinksUpdate.php
1089 * @return bool true if the update succeded
1092 function invalidateCache() {
1093 if ( wfReadOnly() ) {
1097 $now = wfTimestampNow();
1098 $dbw =& wfGetDB( DB_MASTER
);
1099 $success = $dbw->update( 'page',
1101 'page_touched' => $dbw->timestamp()
1102 ), array( /* WHERE */
1103 'page_namespace' => $this->getNamespace() ,
1104 'page_title' => $this->getDBkey()
1105 ), 'Title::invalidateCache'
1111 * Prefix some arbitrary text with the namespace or interwiki prefix
1114 * @param string $name the text
1115 * @return string the prefixed text
1118 /* private */ function prefix( $name ) {
1122 if ( '' != $this->mInterwiki
) {
1123 $p = $this->mInterwiki
. ':';
1125 if ( 0 != $this->mNamespace
) {
1126 $p .= $wgContLang->getNsText( $this->mNamespace
) . ':';
1132 * Secure and split - main initialisation function for this object
1134 * Assumes that mDbkeyform has been set, and is urldecoded
1135 * and uses underscores, but not otherwise munged. This function
1136 * removes illegal characters, splits off the interwiki and
1137 * namespace prefixes, sets the other forms, and canonicalizes
1139 * @return bool true on success
1142 /* private */ function secureAndSplit() {
1143 global $wgContLang, $wgLocalInterwiki, $wgCapitalLinks;
1144 $fname = 'Title::secureAndSplit';
1145 wfProfileIn( $fname );
1148 static $rxTc = false;
1150 # % is needed as well
1151 $rxTc = '/[^' . Title
::legalChars() . ']|%[0-9A-Fa-f]{2}/S';
1154 $this->mInterwiki
= $this->mFragment
= '';
1155 $this->mNamespace
= $this->mDefaultNamespace
; # Usually NS_MAIN
1157 # Clean up whitespace
1159 $t = preg_replace( '/[ _]+/', '_', $this->mDbkeyform
);
1160 $t = trim( $t, '_' );
1163 wfProfileOut( $fname );
1167 if( false !== strpos( $t, UTF8_REPLACEMENT
) ) {
1168 # Contained illegal UTF-8 sequences or forbidden Unicode chars.
1169 wfProfileOut( $fname );
1173 $this->mDbkeyform
= $t;
1175 # Initial colon indicating main namespace
1176 if ( ':' == $t{0} ) {
1177 $r = substr( $t, 1 );
1178 $this->mNamespace
= NS_MAIN
;
1180 # Namespace or interwiki prefix
1183 if ( preg_match( "/^(.+?)_*:_*(.*)$/S", $t, $m ) ) {
1185 $lowerNs = strtolower( $p );
1186 if ( $ns = Namespace::getCanonicalIndex( $lowerNs ) ) {
1187 # Canonical namespace
1189 $this->mNamespace
= $ns;
1190 } elseif ( $ns = $wgContLang->getNsIndex( $lowerNs )) {
1191 # Ordinary namespace
1193 $this->mNamespace
= $ns;
1194 } elseif( $this->getInterwikiLink( $p ) ) {
1196 # Can't make a local interwiki link to an interwiki link.
1197 # That's just crazy!
1198 wfProfileOut( $fname );
1204 $this->mInterwiki
= $p;
1206 # Redundant interwiki prefix to the local wiki
1207 if ( 0 == strcasecmp( $this->mInterwiki
, $wgLocalInterwiki ) ) {
1209 # Can't have an empty self-link
1210 wfProfileOut( $fname );
1213 $this->mInterwiki
= '';
1215 # Do another namespace split...
1219 # If there's no recognized interwiki or namespace,
1220 # then let the colon expression be part of the title.
1227 # We already know that some pages won't be in the database!
1229 if ( '' != $this->mInterwiki ||
-1 == $this->mNamespace
) {
1230 $this->mArticleID
= 0;
1232 $f = strstr( $r, '#' );
1233 if ( false !== $f ) {
1234 $this->mFragment
= substr( $f, 1 );
1235 $r = substr( $r, 0, strlen( $r ) - strlen( $f ) );
1236 # remove whitespace again: prevents "Foo_bar_#"
1237 # becoming "Foo_bar_"
1238 $r = preg_replace( '/_*$/', '', $r );
1241 # Reject illegal characters.
1243 if( preg_match( $rxTc, $r ) ) {
1244 wfProfileOut( $fname );
1249 * Pages with "/./" or "/../" appearing in the URLs will
1250 * often be unreachable due to the way web browsers deal
1251 * with 'relative' URLs. Forbid them explicitly.
1253 if ( strpos( $r, '.' ) !== false &&
1254 ( $r === '.' ||
$r === '..' ||
1255 strpos( $r, './' ) === 0 ||
1256 strpos( $r, '../' ) === 0 ||
1257 strpos( $r, '/./' ) !== false ||
1258 strpos( $r, '/../' ) !== false ) )
1260 wfProfileOut( $fname );
1264 # We shouldn't need to query the DB for the size.
1265 #$maxSize = $dbr->textFieldSize( 'page', 'page_title' );
1266 if ( strlen( $r ) > 255 ) {
1267 wfProfileOut( $fname );
1272 * Normally, all wiki links are forced to have
1273 * an initial capital letter so [[foo]] and [[Foo]]
1274 * point to the same place.
1276 * Don't force it for interwikis, since the other
1277 * site might be case-sensitive.
1279 if( $wgCapitalLinks && $this->mInterwiki
== '') {
1280 $t = $wgContLang->ucfirst( $r );
1286 * Can't make a link to a namespace alone...
1287 * "empty" local links can only be self-links
1288 * with a fragment identifier.
1291 $this->mInterwiki
== '' &&
1292 $this->mNamespace
!= NS_MAIN
) {
1293 wfProfileOut( $fname );
1298 $this->mDbkeyform
= $t;
1299 $this->mUrlform
= wfUrlencode( $t );
1301 $this->mTextform
= str_replace( '_', ' ', $t );
1303 wfProfileOut( $fname );
1308 * Get a Title object associated with the talk page of this article
1309 * @return Title the object for the talk page
1312 function getTalkPage() {
1313 return Title
::makeTitle( Namespace::getTalk( $this->getNamespace() ), $this->getDBkey() );
1317 * Get a title object associated with the subject page of this
1320 * @return Title the object for the subject page
1323 function getSubjectPage() {
1324 return Title
::makeTitle( Namespace::getSubject( $this->getNamespace() ), $this->getDBkey() );
1328 * Get an array of Title objects linking to this Title
1329 * - Also stores the IDs in the link cache.
1331 * @param string $options may be FOR UPDATE
1332 * @return array the Title objects linking here
1335 function getLinksTo( $options = '' ) {
1336 global $wgLinkCache;
1337 $id = $this->getArticleID();
1340 $db =& wfGetDB( DB_MASTER
);
1342 $db =& wfGetDB( DB_SLAVE
);
1344 $page = $db->tableName( 'page' );
1345 $links = $db->tableName( 'links' );
1347 $sql = "SELECT page_namespace,page_title,page_id FROM $page,$links WHERE l_from=page_id AND l_to={$id} $options";
1348 $res = $db->query( $sql, 'Title::getLinksTo' );
1350 if ( $db->numRows( $res ) ) {
1351 while ( $row = $db->fetchObject( $res ) ) {
1352 if ( $titleObj = Title
::makeTitle( $row->page_namespace
, $row->page_title
) ) {
1353 $wgLinkCache->addGoodLink( $row->page_id
, $titleObj->getPrefixedDBkey() );
1354 $retVal[] = $titleObj;
1358 $db->freeResult( $res );
1363 * Get an array of Title objects linking to this non-existent title.
1364 * - Also stores the IDs in the link cache.
1366 * @param string $options may be FOR UPDATE
1367 * @return array the Title objects linking here
1370 function getBrokenLinksTo( $options = '' ) {
1371 global $wgLinkCache;
1374 $db =& wfGetDB( DB_MASTER
);
1376 $db =& wfGetDB( DB_SLAVE
);
1378 $page = $db->tableName( 'page' );
1379 $brokenlinks = $db->tableName( 'brokenlinks' );
1380 $encTitle = $db->strencode( $this->getPrefixedDBkey() );
1382 $sql = "SELECT page_namespace,page_title,page_id FROM $brokenlinks,$page " .
1383 "WHERE bl_from=page_id AND bl_to='$encTitle' $options";
1384 $res = $db->query( $sql, "Title::getBrokenLinksTo" );
1386 if ( $db->numRows( $res ) ) {
1387 while ( $row = $db->fetchObject( $res ) ) {
1388 $titleObj = Title
::makeTitle( $row->page_namespace
, $row->page_title
);
1389 $wgLinkCache->addGoodLink( $row->page_id
, $titleObj->getPrefixedDBkey() );
1390 $retVal[] = $titleObj;
1393 $db->freeResult( $res );
1399 * Get an array of Title objects referring to non-existent articles linked from this page
1401 * @param string $options may be FOR UPDATE
1402 * @return array the Title objects
1405 function getBrokenLinksFrom( $options = '' ) {
1406 global $wgLinkCache;
1409 $db =& wfGetDB( DB_MASTER
);
1411 $db =& wfGetDB( DB_SLAVE
);
1413 $page = $db->tableName( 'page' );
1414 $brokenlinks = $db->tableName( 'brokenlinks' );
1415 $id = $this->getArticleID();
1417 $sql = "SELECT bl_to FROM $brokenlinks WHERE bl_from=$id $options";
1418 $res = $db->query( $sql, "Title::getBrokenLinksFrom" );
1420 if ( $db->numRows( $res ) ) {
1421 while ( $row = $db->fetchObject( $res ) ) {
1422 $retVal[] = Title
::newFromText( $row->bl_to
);
1425 $db->freeResult( $res );
1431 * Get a list of URLs to purge from the Squid cache when this
1434 * @return array the URLs
1437 function getSquidURLs() {
1439 $this->getInternalURL(),
1440 $this->getInternalURL( 'action=history' )
1445 * Move this page without authentication
1446 * @param Title &$nt the new page Title
1449 function moveNoAuth( &$nt ) {
1450 return $this->moveTo( $nt, false );
1454 * Check whether a given move operation would be valid.
1455 * Returns true if ok, or a message key string for an error message
1456 * if invalid. (Scarrrrry ugly interface this.)
1457 * @param Title &$nt the new title
1458 * @param bool $auth indicates whether $wgUser's permissions
1460 * @return mixed true on success, message name on failure
1463 function isValidMoveOperation( &$nt, $auth = true, $reason = '' ) {
1465 if( !$this or !$nt ) {
1466 return 'badtitletext';
1468 if( $this->equals( $nt ) ) {
1471 if( !$this->isMovable() ||
!$nt->isMovable() ) {
1472 return 'immobile_namespace';
1475 $fname = 'Title::move';
1476 $oldid = $this->getArticleID();
1477 $newid = $nt->getArticleID();
1479 if ( strlen( $nt->getDBkey() ) < 1 ) {
1480 return 'articleexists';
1482 if ( ( '' == $this->getDBkey() ) ||
1484 ( '' == $nt->getDBkey() ) ) {
1485 return 'badarticleerror';
1489 !$this->userCanEdit() ||
!$nt->userCanEdit() ||
1490 !$this->userCanMove() ||
!$nt->userCanMove() ) ) {
1491 return 'protectedpage';
1494 # The move is allowed only if (1) the target doesn't exist, or
1495 # (2) the target is a redirect to the source, and has no history
1496 # (so we can undo bad moves right after they're done).
1498 if ( 0 != $newid ) { # Target exists; check for validity
1499 if ( ! $this->isValidMoveTarget( $nt ) ) {
1500 return 'articleexists';
1507 * Move a title to a new location
1508 * @param Title &$nt the new title
1509 * @param bool $auth indicates whether $wgUser's permissions
1511 * @return mixed true on success, message name on failure
1514 function moveTo( &$nt, $auth = true, $reason = '' ) {
1515 $err = $this->isValidMoveOperation( $nt, $auth, $reason );
1516 if( is_string( $err ) ) {
1519 if( $nt->exists() ) {
1520 $this->moveOverExistingRedirect( $nt, $reason );
1521 } else { # Target didn't exist, do normal move.
1522 $this->moveToNewTitle( $nt, $newid, $reason );
1525 # Fixing category links (those without piped 'alternate' names) to be sorted under the new title
1527 $dbw =& wfGetDB( DB_MASTER
);
1528 $categorylinks = $dbw->tableName( 'categorylinks' );
1529 $sql = "UPDATE $categorylinks SET cl_sortkey=" . $dbw->addQuotes( $nt->getPrefixedText() ) .
1530 " WHERE cl_from=" . $dbw->addQuotes( $this->getArticleID() ) .
1531 " AND cl_sortkey=" . $dbw->addQuotes( $this->getPrefixedText() );
1532 $dbw->query( $sql, 'SpecialMovepage::doSubmit' );
1536 $oldnamespace = $this->getNamespace() & ~
1;
1537 $newnamespace = $nt->getNamespace() & ~
1;
1538 $oldtitle = $this->getDBkey();
1539 $newtitle = $nt->getDBkey();
1541 if( $oldnamespace != $newnamespace ||
$oldtitle != $newtitle ) {
1542 WatchedItem
::duplicateEntries( $this, $nt );
1545 # Update search engine
1546 $u = new SearchUpdate( $oldid, $nt->getPrefixedDBkey() );
1548 $u = new SearchUpdate( $newid, $this->getPrefixedDBkey(), '' );
1551 wfRunHooks( 'TitleMoveComplete', array(&$this, &$nt, &$wgUser, $oldid, $newid) );
1556 * Move page to a title which is at present a redirect to the
1559 * @param Title &$nt the page to move to, which should currently
1563 /* private */ function moveOverExistingRedirect( &$nt, $reason = '' ) {
1564 global $wgUser, $wgLinkCache, $wgUseSquid, $wgMwRedir;
1565 $fname = 'Title::moveOverExistingRedirect';
1566 $comment = wfMsgForContent( '1movedto2', $this->getPrefixedText(), $nt->getPrefixedText() );
1569 $comment .= ": $reason";
1572 $now = wfTimestampNow();
1574 $newid = $nt->getArticleID();
1575 $oldid = $this->getArticleID();
1576 $dbw =& wfGetDB( DB_MASTER
);
1577 $links = $dbw->tableName( 'links' );
1579 # Delete the old redirect. We don't save it to history since
1580 # by definition if we've got here it's rather uninteresting.
1581 # We have to remove it so that the next step doesn't trigger
1582 # a conflict on the unique namespace+title index...
1583 $dbw->delete( 'page', array( 'page_id' => $newid ), $fname );
1585 # Save a null revision in the page's history notifying of the move
1586 $nullRevision = Revision
::newNullRevision( $dbw, $oldid,
1587 wfMsg( '1movedto2', $this->getPrefixedText(), $nt->getPrefixedText() ),
1589 $nullRevId = $nullRevision->insertOn( $dbw );
1591 # Change the name of the target page:
1592 $dbw->update( 'page',
1594 'page_touched' => $dbw->timestamp($now),
1595 'page_namespace' => $nt->getNamespace(),
1596 'page_title' => $nt->getDBkey(),
1597 'page_latest' => $nullRevId,
1599 /* WHERE */ array( 'page_id' => $oldid ),
1602 $wgLinkCache->clearLink( $nt->getPrefixedDBkey() );
1604 # Recreate the redirect, this time in the other direction.
1605 $redirectText = $wgMwRedir->getSynonym( 0 ) . ' [[' . $nt->getPrefixedText() . "]]\n";
1606 $redirectArticle = new Article( $this );
1607 $newid = $redirectArticle->insertOn( $dbw );
1608 $redirectRevision = new Revision( array(
1610 'comment' => $comment,
1611 'text' => $redirectText ) );
1612 $revid = $redirectRevision->insertOn( $dbw );
1613 $redirectArticle->updateRevisionOn( $dbw, $redirectRevision, 0 );
1614 $wgLinkCache->clearLink( $this->getPrefixedDBkey() );
1617 $log = new LogPage( 'move' );
1618 $log->addEntry( 'move_redir', $this, $reason, array( 1 => $nt->getPrefixedText() ) );
1622 # Load titles and IDs
1623 $linksToOld = $this->getLinksTo( 'FOR UPDATE' );
1624 $linksToNew = $nt->getLinksTo( 'FOR UPDATE' );
1627 $sql = "DELETE FROM $links WHERE l_to=$oldid OR l_to=$newid";
1628 $dbw->query( $sql, $fname );
1631 if ( count( $linksToOld ) ||
count( $linksToNew )) {
1632 $sql = "INSERT INTO $links (l_from,l_to) VALUES ";
1635 # Insert links to old title
1636 foreach ( $linksToOld as $linkTitle ) {
1642 $id = $linkTitle->getArticleID();
1643 $sql .= "($id,$newid)";
1646 # Insert links to new title
1647 foreach ( $linksToNew as $linkTitle ) {
1653 $id = $linkTitle->getArticleID();
1654 $sql .= "($id, $oldid)";
1657 $dbw->query( $sql, $fname );
1660 # Now, we record the link from the redirect to the new title.
1661 # It should have no other outgoing links...
1662 $dbw->delete( 'links', array( 'l_from' => $newid ) );
1663 $dbw->insert( 'links', array( 'l_from' => $newid, 'l_to' => $oldid ) );
1666 LinkCache
::linksccClearLinksTo( $oldid );
1667 LinkCache
::linksccClearLinksTo( $newid );
1670 if ( $wgUseSquid ) {
1671 $urls = array_merge( $nt->getSquidURLs(), $this->getSquidURLs() );
1672 $u = new SquidUpdate( $urls );
1678 * Move page to non-existing title.
1679 * @param Title &$nt the new Title
1680 * @param int &$newid set to be the new article ID
1683 /* private */ function moveToNewTitle( &$nt, &$newid, $reason = '' ) {
1684 global $wgUser, $wgLinkCache, $wgUseSquid;
1686 $fname = 'MovePageForm::moveToNewTitle';
1687 $comment = wfMsgForContent( '1movedto2', $this->getPrefixedText(), $nt->getPrefixedText() );
1689 $comment .= ": $reason";
1692 $newid = $nt->getArticleID();
1693 $oldid = $this->getArticleID();
1694 $dbw =& wfGetDB( DB_MASTER
);
1695 $now = $dbw->timestamp();
1699 # Save a null revision in the page's history notifying of the move
1700 $nullRevision = Revision
::newNullRevision( $dbw, $oldid,
1701 wfMsg( '1movedto2', $this->getPrefixedText(), $nt->getPrefixedText() ),
1703 $nullRevId = $nullRevision->insertOn( $dbw );
1706 $dbw->update( 'page',
1708 'page_touched' => $now,
1709 'page_namespace' => $nt->getNamespace(),
1710 'page_title' => $nt->getDBkey(),
1711 'page_latest' => $nullRevId,
1713 /* WHERE */ array( 'page_id' => $oldid ),
1717 $wgLinkCache->clearLink( $nt->getPrefixedDBkey() );
1720 $redirectText = $wgMwRedir->getSynonym( 0 ) . ' [[' . $nt->getPrefixedText() . "]]\n";
1721 $redirectArticle = new Article( $this );
1722 $newid = $redirectArticle->insertOn( $dbw );
1723 $redirectRevision = new Revision( array(
1725 'comment' => $comment,
1726 'text' => $redirectText ) );
1727 $revid = $redirectRevision->insertOn( $dbw );
1728 $redirectArticle->updateRevisionOn( $dbw, $redirectRevision, 0 );
1729 $wgLinkCache->clearLink( $this->getPrefixedDBkey() );
1732 $log = new LogPage( 'move' );
1733 $log->addEntry( 'move', $this, $reason, array( 1 => $nt->getPrefixedText()) );
1735 # Purge squid and linkscc as per article creation
1736 Article
::onArticleCreate( $nt );
1738 # Any text links to the old title must be reassigned to the redirect
1739 $dbw->update( 'links', array( 'l_to' => $newid ), array( 'l_to' => $oldid ), $fname );
1740 LinkCache
::linksccClearLinksTo( $oldid );
1742 # Record the just-created redirect's linking to the page
1743 $dbw->insert( 'links', array( 'l_from' => $newid, 'l_to' => $oldid ), $fname );
1745 # Non-existent target may have had broken links to it; these must
1746 # now be removed and made into good links.
1747 $update = new LinksUpdate( $oldid, $nt->getPrefixedDBkey() );
1748 $update->fixBrokenLinks();
1750 # Purge old title from squid
1751 # The new title, and links to the new title, are purged in Article::onArticleCreate()
1752 $titles = $nt->getLinksTo();
1753 if ( $wgUseSquid ) {
1754 $urls = $this->getSquidURLs();
1755 foreach ( $titles as $linkTitle ) {
1756 $urls[] = $linkTitle->getInternalURL();
1758 $u = new SquidUpdate( $urls );
1764 * Checks if $this can be moved to a given Title
1765 * - Selects for update, so don't call it unless you mean business
1767 * @param Title &$nt the new title to check
1770 function isValidMoveTarget( $nt ) {
1772 $fname = 'Title::isValidMoveTarget';
1773 $dbw =& wfGetDB( DB_MASTER
);
1776 $id = $nt->getArticleID();
1777 $obj = $dbw->selectRow( array( 'page', 'revision', 'text'),
1778 array( 'page_is_redirect','old_text' ),
1779 array( 'page_id' => $id, 'page_latest=rev_id', 'rev_text_id=old_id' ),
1780 $fname, 'FOR UPDATE' );
1782 if ( !$obj ||
0 == $obj->page_is_redirect
) {
1787 # Does the redirect point to the source?
1788 if ( preg_match( "/\\[\\[\\s*([^\\]\\|]*)]]/", $obj->old_text
, $m ) ) {
1789 $redirTitle = Title
::newFromText( $m[1] );
1790 if( !is_object( $redirTitle ) ||
1791 $redirTitle->getPrefixedDBkey() != $this->getPrefixedDBkey() ) {
1796 # Does the article have a history?
1797 $row = $dbw->selectRow( array( 'page', 'revision'),
1799 array( 'page_namespace' => $nt->getNamespace(),
1800 'page_title' => $nt->getDBkey(),
1801 'page_id=rev_page AND page_latest != rev_id'
1802 ), $fname, 'FOR UPDATE'
1805 # Return true if there was no history
1806 return $row === false;
1810 * Create a redirect; fails if the title already exists; does
1813 * @param Title $dest the destination of the redirect
1814 * @param string $comment the comment string describing the move
1815 * @return bool true on success
1818 function createRedirect( $dest, $comment ) {
1820 if ( $this->getArticleID() ) {
1824 $fname = 'Title::createRedirect';
1825 $dbw =& wfGetDB( DB_MASTER
);
1827 $article = new Article( $this );
1828 $newid = $article->insertOn( $dbw );
1829 $revision = new Revision( array(
1831 'comment' => $comment,
1832 'text' => "#REDIRECT [[" . $dest->getPrefixedText() . "]]\n",
1834 $revisionId = $revision->insertOn( $dbw );
1835 $article->updateRevisionOn( $dbw, $revision, 0 );
1838 if ( $dest->getArticleID() ) {
1839 $dbw->insert( 'links',
1841 'l_to' => $dest->getArticleID(),
1846 $dbw->insert( 'brokenlinks',
1848 'bl_to' => $dest->getPrefixedDBkey(),
1854 Article
::onArticleCreate( $this );
1859 * Get categories to which this Title belongs and return an array of
1860 * categories' names.
1862 * @return array an array of parents in the form:
1863 * $parent => $currentarticle
1866 function getParentCategories() {
1867 global $wgContLang,$wgUser;
1869 $titlekey = $this->getArticleId();
1870 $sk =& $wgUser->getSkin();
1872 $dbr =& wfGetDB( DB_SLAVE
);
1873 $categorylinks = $dbr->tableName( 'categorylinks' );
1876 $sql = "SELECT * FROM $categorylinks"
1877 ." WHERE cl_from='$titlekey'"
1878 ." AND cl_from <> '0'"
1879 ." ORDER BY cl_sortkey";
1881 $res = $dbr->query ( $sql ) ;
1883 if($dbr->numRows($res) > 0) {
1884 while ( $x = $dbr->fetchObject ( $res ) )
1885 //$data[] = Title::newFromText($wgContLang->getNSText ( NS_CATEGORY ).':'.$x->cl_to);
1886 $data[$wgContLang->getNSText ( NS_CATEGORY
).':'.$x->cl_to
] = $this->getFullText();
1887 $dbr->freeResult ( $res ) ;
1895 * Get a tree of parent categories
1896 * @param array $children an array with the children in the keys, to check for circular refs
1900 function getParentCategoryTree( $children = array() ) {
1901 $parents = $this->getParentCategories();
1903 if($parents != '') {
1904 foreach($parents as $parent => $current)
1906 if ( array_key_exists( $parent, $children ) ) {
1907 # Circular reference
1908 $stack[$parent] = array();
1910 $nt = Title
::newFromText($parent);
1911 $stack[$parent] = $nt->getParentCategoryTree( $children +
array($parent => 1) );
1922 * Get an associative array for selecting this title from
1928 function curCond() {
1929 wfDebugDieBacktrace( 'curCond called' );
1930 return array( 'cur_namespace' => $this->mNamespace
, 'cur_title' => $this->mDbkeyform
);
1934 * Get an associative array for selecting this title from the
1940 function oldCond() {
1941 wfDebugDieBacktrace( 'oldCond called' );
1942 return array( 'old_namespace' => $this->mNamespace
, 'old_title' => $this->mDbkeyform
);
1946 * Get the revision ID of the previous revision
1948 * @param integer $revision Revision ID. Get the revision that was before this one.
1949 * @return interger $oldrevision|false
1951 function getPreviousRevisionID( $revision ) {
1952 $dbr =& wfGetDB( DB_SLAVE
);
1953 return $dbr->selectField( 'revision', 'rev_id',
1954 'rev_page=' . IntVal( $this->getArticleId() ) .
1955 ' AND rev_id<' . IntVal( $revision ) . ' ORDER BY rev_id DESC' );
1959 * Get the revision ID of the next revision
1961 * @param integer $revision Revision ID. Get the revision that was after this one.
1962 * @return interger $oldrevision|false
1964 function getNextRevisionID( $revision ) {
1965 $dbr =& wfGetDB( DB_SLAVE
);
1966 return $dbr->selectField( 'revision', 'rev_id',
1967 'rev_page=' . IntVal( $this->getArticleId() ) .
1968 ' AND rev_id>' . IntVal( $revision ) . ' ORDER BY rev_id' );
1972 * Compare with another title.
1974 * @param Title $title
1977 function equals( &$title ) {
1978 return $this->getInterwiki() == $title->getInterwiki()
1979 && $this->getNamespace() == $title->getNamespace()
1980 && $this->getDbkey() == $title->getDbkey();
1984 * Check if page exists
1988 return $this->getArticleId() != 0;
1992 * Should a link should be displayed as a known link, just based on its title?
1994 * Currently, a self-link with a fragment, special pages and image pages are in
1995 * this category. Special pages never exist in the database. Some images do not
1996 * have description pages in the database, but the description page contains
1997 * useful history information that the user may want to link to.
2000 function isAlwaysKnown() {
2001 return ( 0 == $this->mNamespace
&& "" == $this->mDbkeyform
)
2002 || NS_SPECIAL
== $this->mNamespace || NS_IMAGE
== $this->mNamespace
;