3 * Representation of a title within %MediaWiki.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
20 * http://www.gnu.org/copyleft/gpl.html
26 * Represents a title within MediaWiki.
27 * Optionally may contain an interwiki designation or namespace.
28 * @note This class can fetch various kinds of data from the database;
29 * however, it does so inefficiently.
30 * @note Consider using a TitleValue object instead. TitleValue is more lightweight
31 * and does not rely on global state or the database.
33 * @internal documentation reviewed 15 Mar 2010
36 /** @var MapCacheLRU */
37 static private $titleCache = null;
40 * Title::newFromText maintains a cache to avoid expensive re-normalization of
41 * commonly used titles. On a batch operation this can become a memory leak
42 * if not bounded. After hitting this many titles reset the cache.
44 const CACHE_MAX
= 1000;
47 * Used to be GAID_FOR_UPDATE define. Used with getArticleID() and friends
48 * to use the master DB
50 const GAID_FOR_UPDATE
= 1;
53 * @name Private member variables
54 * Please use the accessor functions instead.
59 /** @var string Text form (spaces not underscores) of the main part */
60 public $mTextform = '';
62 /** @var string URL-encoded form of the main part */
63 public $mUrlform = '';
65 /** @var string Main part with underscores */
66 public $mDbkeyform = '';
68 /** @var string Database key with the initial letter in the case specified by the user */
69 protected $mUserCaseDBKey;
71 /** @var int Namespace index, i.e. one of the NS_xxxx constants */
72 public $mNamespace = NS_MAIN
;
74 /** @var string Interwiki prefix */
75 public $mInterwiki = '';
77 /** @var bool Was this Title created from a string with a local interwiki prefix? */
78 private $mLocalInterwiki = false;
80 /** @var string Title fragment (i.e. the bit after the #) */
81 public $mFragment = '';
83 /** @var int Article ID, fetched from the link cache on demand */
84 public $mArticleID = -1;
86 /** @var bool|int ID of most recent revision */
87 protected $mLatestID = false;
90 * @var bool|string ID of the page's content model, i.e. one of the
91 * CONTENT_MODEL_XXX constants
93 public $mContentModel = false;
95 /** @var int Estimated number of revisions; null of not loaded */
96 private $mEstimateRevisions;
98 /** @var array Array of groups allowed to edit this article */
99 public $mRestrictions = array();
102 protected $mOldRestrictions = false;
104 /** @var bool Cascade restrictions on this page to included templates and images? */
105 public $mCascadeRestriction;
107 /** Caching the results of getCascadeProtectionSources */
108 public $mCascadingRestrictions;
110 /** @var array When do the restrictions on this page expire? */
111 protected $mRestrictionsExpiry = array();
113 /** @var bool Are cascading restrictions in effect on this page? */
114 protected $mHasCascadingRestrictions;
116 /** @var array Where are the cascading restrictions coming from on this page? */
117 public $mCascadeSources;
119 /** @var bool Boolean for initialisation on demand */
120 public $mRestrictionsLoaded = false;
122 /** @var string Text form including namespace/interwiki, initialised on demand */
123 protected $mPrefixedText = null;
125 /** @var mixed Cached value for getTitleProtection (create protection) */
126 public $mTitleProtection;
129 * @var int Namespace index when there is no namespace. Don't change the
130 * following default, NS_MAIN is hardcoded in several places. See bug 696.
131 * Zero except in {{transclusion}} tags.
133 public $mDefaultNamespace = NS_MAIN
;
136 * @var bool Is $wgUser watching this page? null if unfilled, accessed
137 * through userIsWatching()
139 protected $mWatched = null;
141 /** @var int The page length, 0 for special pages */
142 protected $mLength = -1;
144 /** @var null Is the article at this title a redirect? */
145 public $mRedirect = null;
147 /** @var array Associative array of user ID -> timestamp/false */
148 private $mNotificationTimestamp = array();
150 /** @var bool Whether a page has any subpages */
151 private $mHasSubpages;
153 /** @var bool The (string) language code of the page's language and content code. */
154 private $mPageLanguage = false;
156 /** @var string The page language code from the database */
157 private $mDbPageLanguage = null;
159 /** @var TitleValue A corresponding TitleValue object */
160 private $mTitleValue = null;
164 * B/C kludge: provide a TitleParser for use by Title.
165 * Ideally, Title would have no methods that need this.
166 * Avoid usage of this singleton by using TitleValue
167 * and the associated services when possible.
169 * @return TitleParser
171 private static function getTitleParser() {
172 global $wgContLang, $wgLocalInterwikis;
174 static $titleCodec = null;
175 static $titleCodecFingerprint = null;
177 // $wgContLang and $wgLocalInterwikis may change (especially while testing),
178 // make sure we are using the right one. To detect changes over the course
179 // of a request, we remember a fingerprint of the config used to create the
180 // codec singleton, and re-create it if the fingerprint doesn't match.
181 $fingerprint = spl_object_hash( $wgContLang ) . '|' . join( '+', $wgLocalInterwikis );
183 if ( $fingerprint !== $titleCodecFingerprint ) {
187 if ( !$titleCodec ) {
188 $titleCodec = new MediaWikiTitleCodec(
190 GenderCache
::singleton(),
193 $titleCodecFingerprint = $fingerprint;
200 * B/C kludge: provide a TitleParser for use by Title.
201 * Ideally, Title would have no methods that need this.
202 * Avoid usage of this singleton by using TitleValue
203 * and the associated services when possible.
205 * @return TitleFormatter
207 private static function getTitleFormatter() {
208 //NOTE: we know that getTitleParser() returns a MediaWikiTitleCodec,
209 // which implements TitleFormatter.
210 return self
::getTitleParser();
213 function __construct() {
217 * Create a new Title from a prefixed DB key
219 * @param string $key The database key, which has underscores
220 * instead of spaces, possibly including namespace and
222 * @return Title|null Title, or null on an error
224 public static function newFromDBkey( $key ) {
226 $t->mDbkeyform
= $key;
227 if ( $t->secureAndSplit() ) {
235 * Create a new Title from a TitleValue
237 * @param TitleValue $titleValue Assumed to be safe.
241 public static function newFromTitleValue( TitleValue
$titleValue ) {
242 return self
::makeTitle(
243 $titleValue->getNamespace(),
244 $titleValue->getText(),
245 $titleValue->getFragment() );
249 * Create a new Title from text, such as what one would find in a link. De-
250 * codes any HTML entities in the text.
252 * @param string $text The link text; spaces, prefixes, and an
253 * initial ':' indicating the main namespace are accepted.
254 * @param int $defaultNamespace The namespace to use if none is specified
255 * by a prefix. If you want to force a specific namespace even if
256 * $text might begin with a namespace prefix, use makeTitle() or
258 * @throws MWException
259 * @return Title|null Title or null on an error.
261 public static function newFromText( $text, $defaultNamespace = NS_MAIN
) {
262 if ( is_object( $text ) ) {
263 throw new MWException( 'Title::newFromText given an object' );
266 $cache = self
::getTitleCache();
269 * Wiki pages often contain multiple links to the same page.
270 * Title normalization and parsing can become expensive on
271 * pages with many links, so we can save a little time by
274 * In theory these are value objects and won't get changed...
276 if ( $defaultNamespace == NS_MAIN
&& $cache->has( $text ) ) {
277 return $cache->get( $text );
280 # Convert things like é ā or 〗 into normalized (bug 14952) text
281 $filteredText = Sanitizer
::decodeCharReferencesAndNormalize( $text );
284 $t->mDbkeyform
= str_replace( ' ', '_', $filteredText );
285 $t->mDefaultNamespace
= intval( $defaultNamespace );
287 if ( $t->secureAndSplit() ) {
288 if ( $defaultNamespace == NS_MAIN
) {
289 $cache->set( $text, $t );
298 * THIS IS NOT THE FUNCTION YOU WANT. Use Title::newFromText().
300 * Example of wrong and broken code:
301 * $title = Title::newFromURL( $wgRequest->getVal( 'title' ) );
303 * Example of right code:
304 * $title = Title::newFromText( $wgRequest->getVal( 'title' ) );
306 * Create a new Title from URL-encoded text. Ensures that
307 * the given title's length does not exceed the maximum.
309 * @param string $url The title, as might be taken from a URL
310 * @return Title|null The new object, or null on an error
312 public static function newFromURL( $url ) {
315 # For compatibility with old buggy URLs. "+" is usually not valid in titles,
316 # but some URLs used it as a space replacement and they still come
317 # from some external search tools.
318 if ( strpos( self
::legalChars(), '+' ) === false ) {
319 $url = str_replace( '+', ' ', $url );
322 $t->mDbkeyform
= str_replace( ' ', '_', $url );
323 if ( $t->secureAndSplit() ) {
331 * @return MapCacheLRU
333 private static function getTitleCache() {
334 if ( self
::$titleCache == null ) {
335 self
::$titleCache = new MapCacheLRU( self
::CACHE_MAX
);
337 return self
::$titleCache;
341 * Returns a list of fields that are to be selected for initializing Title
342 * objects or LinkCache entries. Uses $wgContentHandlerUseDB to determine
343 * whether to include page_content_model.
347 protected static function getSelectFields() {
348 global $wgContentHandlerUseDB;
351 'page_namespace', 'page_title', 'page_id',
352 'page_len', 'page_is_redirect', 'page_latest',
355 if ( $wgContentHandlerUseDB ) {
356 $fields[] = 'page_content_model';
363 * Create a new Title from an article ID
365 * @param int $id The page_id corresponding to the Title to create
366 * @param int $flags Use Title::GAID_FOR_UPDATE to use master
367 * @return Title|null The new object, or null on an error
369 public static function newFromID( $id, $flags = 0 ) {
370 $db = ( $flags & self
::GAID_FOR_UPDATE
) ?
wfGetDB( DB_MASTER
) : wfGetDB( DB_SLAVE
);
371 $row = $db->selectRow(
373 self
::getSelectFields(),
374 array( 'page_id' => $id ),
377 if ( $row !== false ) {
378 $title = Title
::newFromRow( $row );
386 * Make an array of titles from an array of IDs
388 * @param int[] $ids Array of IDs
389 * @return Title[] Array of Titles
391 public static function newFromIDs( $ids ) {
392 if ( !count( $ids ) ) {
395 $dbr = wfGetDB( DB_SLAVE
);
399 self
::getSelectFields(),
400 array( 'page_id' => $ids ),
405 foreach ( $res as $row ) {
406 $titles[] = Title
::newFromRow( $row );
412 * Make a Title object from a DB row
414 * @param stdClass $row Object database row (needs at least page_title,page_namespace)
415 * @return Title Corresponding Title
417 public static function newFromRow( $row ) {
418 $t = self
::makeTitle( $row->page_namespace
, $row->page_title
);
419 $t->loadFromRow( $row );
424 * Load Title object fields from a DB row.
425 * If false is given, the title will be treated as non-existing.
427 * @param stdClass|bool $row Database row
429 public function loadFromRow( $row ) {
430 if ( $row ) { // page found
431 if ( isset( $row->page_id
) ) {
432 $this->mArticleID
= (int)$row->page_id
;
434 if ( isset( $row->page_len
) ) {
435 $this->mLength
= (int)$row->page_len
;
437 if ( isset( $row->page_is_redirect
) ) {
438 $this->mRedirect
= (bool)$row->page_is_redirect
;
440 if ( isset( $row->page_latest
) ) {
441 $this->mLatestID
= (int)$row->page_latest
;
443 if ( isset( $row->page_content_model
) ) {
444 $this->mContentModel
= strval( $row->page_content_model
);
446 $this->mContentModel
= false; # initialized lazily in getContentModel()
448 if ( isset( $row->page_lang
) ) {
449 $this->mDbPageLanguage
= (string)$row->page_lang
;
451 } else { // page not found
452 $this->mArticleID
= 0;
454 $this->mRedirect
= false;
455 $this->mLatestID
= 0;
456 $this->mContentModel
= false; # initialized lazily in getContentModel()
461 * Create a new Title from a namespace index and a DB key.
462 * It's assumed that $ns and $title are *valid*, for instance when
463 * they came directly from the database or a special page name.
464 * For convenience, spaces are converted to underscores so that
465 * eg user_text fields can be used directly.
467 * @param int $ns The namespace of the article
468 * @param string $title The unprefixed database key form
469 * @param string $fragment The link fragment (after the "#")
470 * @param string $interwiki The interwiki prefix
471 * @return Title The new object
473 public static function &makeTitle( $ns, $title, $fragment = '', $interwiki = '' ) {
475 $t->mInterwiki
= $interwiki;
476 $t->mFragment
= $fragment;
477 $t->mNamespace
= $ns = intval( $ns );
478 $t->mDbkeyform
= str_replace( ' ', '_', $title );
479 $t->mArticleID
= ( $ns >= 0 ) ?
-1 : 0;
480 $t->mUrlform
= wfUrlencode( $t->mDbkeyform
);
481 $t->mTextform
= str_replace( '_', ' ', $title );
482 $t->mContentModel
= false; # initialized lazily in getContentModel()
487 * Create a new Title from a namespace index and a DB key.
488 * The parameters will be checked for validity, which is a bit slower
489 * than makeTitle() but safer for user-provided data.
491 * @param int $ns The namespace of the article
492 * @param string $title Database key form
493 * @param string $fragment The link fragment (after the "#")
494 * @param string $interwiki Interwiki prefix
495 * @return Title The new object, or null on an error
497 public static function makeTitleSafe( $ns, $title, $fragment = '', $interwiki = '' ) {
498 if ( !MWNamespace
::exists( $ns ) ) {
503 $t->mDbkeyform
= Title
::makeName( $ns, $title, $fragment, $interwiki );
504 if ( $t->secureAndSplit() ) {
512 * Create a new Title for the Main Page
514 * @return Title The new object
516 public static function newMainPage() {
517 $title = Title
::newFromText( wfMessage( 'mainpage' )->inContentLanguage()->text() );
518 // Don't give fatal errors if the message is broken
520 $title = Title
::newFromText( 'Main Page' );
526 * Extract a redirect destination from a string and return the
527 * Title, or null if the text doesn't contain a valid redirect
528 * This will only return the very next target, useful for
529 * the redirect table and other checks that don't need full recursion
531 * @param string $text Text with possible redirect
532 * @return Title The corresponding Title
533 * @deprecated since 1.21, use Content::getRedirectTarget instead.
535 public static function newFromRedirect( $text ) {
536 ContentHandler
::deprecated( __METHOD__
, '1.21' );
538 $content = ContentHandler
::makeContent( $text, null, CONTENT_MODEL_WIKITEXT
);
539 return $content->getRedirectTarget();
543 * Extract a redirect destination from a string and return the
544 * Title, or null if the text doesn't contain a valid redirect
545 * This will recurse down $wgMaxRedirects times or until a non-redirect target is hit
546 * in order to provide (hopefully) the Title of the final destination instead of another redirect
548 * @param string $text Text with possible redirect
550 * @deprecated since 1.21, use Content::getUltimateRedirectTarget instead.
552 public static function newFromRedirectRecurse( $text ) {
553 ContentHandler
::deprecated( __METHOD__
, '1.21' );
555 $content = ContentHandler
::makeContent( $text, null, CONTENT_MODEL_WIKITEXT
);
556 return $content->getUltimateRedirectTarget();
560 * Extract a redirect destination from a string and return an
561 * array of Titles, or null if the text doesn't contain a valid redirect
562 * The last element in the array is the final destination after all redirects
563 * have been resolved (up to $wgMaxRedirects times)
565 * @param string $text Text with possible redirect
566 * @return Title[] Array of Titles, with the destination last
567 * @deprecated since 1.21, use Content::getRedirectChain instead.
569 public static function newFromRedirectArray( $text ) {
570 ContentHandler
::deprecated( __METHOD__
, '1.21' );
572 $content = ContentHandler
::makeContent( $text, null, CONTENT_MODEL_WIKITEXT
);
573 return $content->getRedirectChain();
577 * Get the prefixed DB key associated with an ID
579 * @param int $id The page_id of the article
580 * @return Title|null An object representing the article, or null if no such article was found
582 public static function nameOf( $id ) {
583 $dbr = wfGetDB( DB_SLAVE
);
585 $s = $dbr->selectRow(
587 array( 'page_namespace', 'page_title' ),
588 array( 'page_id' => $id ),
591 if ( $s === false ) {
595 $n = self
::makeName( $s->page_namespace
, $s->page_title
);
600 * Get a regex character class describing the legal characters in a link
602 * @return string The list of characters, not delimited
604 public static function legalChars() {
605 global $wgLegalTitleChars;
606 return $wgLegalTitleChars;
610 * Returns a simple regex that will match on characters and sequences invalid in titles.
611 * Note that this doesn't pick up many things that could be wrong with titles, but that
612 * replacing this regex with something valid will make many titles valid.
614 * @todo move this into MediaWikiTitleCodec
616 * @return string Regex string
618 static function getTitleInvalidRegex() {
619 static $rxTc = false;
621 # Matching titles will be held as illegal.
623 # Any character not allowed is forbidden...
624 '[^' . self
::legalChars() . ']' .
625 # URL percent encoding sequences interfere with the ability
626 # to round-trip titles -- you can't link to them consistently.
628 # XML/HTML character references produce similar issues.
629 '|&[A-Za-z0-9\x80-\xff]+;' .
631 '|&#x[0-9A-Fa-f]+;' .
639 * Utility method for converting a character sequence from bytes to Unicode.
641 * Primary usecase being converting $wgLegalTitleChars to a sequence usable in
642 * javascript, as PHP uses UTF-8 bytes where javascript uses Unicode code units.
644 * @param string $byteClass
647 public static function convertByteClassToUnicodeClass( $byteClass ) {
648 $length = strlen( $byteClass );
650 $x0 = $x1 = $x2 = '';
652 $d0 = $d1 = $d2 = '';
653 // Decoded integer codepoints
654 $ord0 = $ord1 = $ord2 = 0;
656 $r0 = $r1 = $r2 = '';
660 $allowUnicode = false;
661 for ( $pos = 0; $pos < $length; $pos++
) {
662 // Shift the queues down
671 // Load the current input token and decoded values
672 $inChar = $byteClass[$pos];
673 if ( $inChar == '\\' ) {
674 if ( preg_match( '/x([0-9a-fA-F]{2})/A', $byteClass, $m, 0, $pos +
1 ) ) {
675 $x0 = $inChar . $m[0];
676 $d0 = chr( hexdec( $m[1] ) );
677 $pos +
= strlen( $m[0] );
678 } elseif ( preg_match( '/[0-7]{3}/A', $byteClass, $m, 0, $pos +
1 ) ) {
679 $x0 = $inChar . $m[0];
680 $d0 = chr( octdec( $m[0] ) );
681 $pos +
= strlen( $m[0] );
682 } elseif ( $pos +
1 >= $length ) {
685 $d0 = $byteClass[$pos +
1];
693 // Load the current re-encoded value
694 if ( $ord0 < 32 ||
$ord0 == 0x7f ) {
695 $r0 = sprintf( '\x%02x', $ord0 );
696 } elseif ( $ord0 >= 0x80 ) {
697 // Allow unicode if a single high-bit character appears
698 $r0 = sprintf( '\x%02x', $ord0 );
699 $allowUnicode = true;
700 } elseif ( strpos( '-\\[]^', $d0 ) !== false ) {
706 if ( $x0 !== '' && $x1 === '-' && $x2 !== '' ) {
708 if ( $ord2 > $ord0 ) {
710 } elseif ( $ord0 >= 0x80 ) {
712 $allowUnicode = true;
713 if ( $ord2 < 0x80 ) {
714 // Keep the non-unicode section of the range
721 // Reset state to the initial value
722 $x0 = $x1 = $d0 = $d1 = $r0 = $r1 = '';
723 } elseif ( $ord2 < 0x80 ) {
728 if ( $ord1 < 0x80 ) {
731 if ( $ord0 < 0x80 ) {
734 if ( $allowUnicode ) {
735 $out .= '\u0080-\uFFFF';
741 * Make a prefixed DB key from a DB key and a namespace index
743 * @param int $ns Numerical representation of the namespace
744 * @param string $title The DB key form the title
745 * @param string $fragment The link fragment (after the "#")
746 * @param string $interwiki The interwiki prefix
747 * @return string The prefixed form of the title
749 public static function makeName( $ns, $title, $fragment = '', $interwiki = '' ) {
752 $namespace = $wgContLang->getNsText( $ns );
753 $name = $namespace == '' ?
$title : "$namespace:$title";
754 if ( strval( $interwiki ) != '' ) {
755 $name = "$interwiki:$name";
757 if ( strval( $fragment ) != '' ) {
758 $name .= '#' . $fragment;
764 * Escape a text fragment, say from a link, for a URL
766 * @param string $fragment Containing a URL or link fragment (after the "#")
767 * @return string Escaped string
769 static function escapeFragmentForURL( $fragment ) {
770 # Note that we don't urlencode the fragment. urlencoded Unicode
771 # fragments appear not to work in IE (at least up to 7) or in at least
772 # one version of Opera 9.x. The W3C validator, for one, doesn't seem
773 # to care if they aren't encoded.
774 return Sanitizer
::escapeId( $fragment, 'noninitial' );
778 * Callback for usort() to do title sorts by (namespace, title)
783 * @return int Result of string comparison, or namespace comparison
785 public static function compare( $a, $b ) {
786 if ( $a->getNamespace() == $b->getNamespace() ) {
787 return strcmp( $a->getText(), $b->getText() );
789 return $a->getNamespace() - $b->getNamespace();
794 * Determine whether the object refers to a page within
797 * @return bool True if this is an in-project interwiki link or a wikilink, false otherwise
799 public function isLocal() {
800 if ( $this->isExternal() ) {
801 $iw = Interwiki
::fetch( $this->mInterwiki
);
803 return $iw->isLocal();
810 * Is this Title interwiki?
814 public function isExternal() {
815 return $this->mInterwiki
!== '';
819 * Get the interwiki prefix
821 * Use Title::isExternal to check if a interwiki is set
823 * @return string Interwiki prefix
825 public function getInterwiki() {
826 return $this->mInterwiki
;
830 * Was this a local interwiki link?
834 public function wasLocalInterwiki() {
835 return $this->mLocalInterwiki
;
839 * Determine whether the object refers to a page within
840 * this project and is transcludable.
842 * @return bool True if this is transcludable
844 public function isTrans() {
845 if ( !$this->isExternal() ) {
849 return Interwiki
::fetch( $this->mInterwiki
)->isTranscludable();
853 * Returns the DB name of the distant wiki which owns the object.
855 * @return string The DB name
857 public function getTransWikiID() {
858 if ( !$this->isExternal() ) {
862 return Interwiki
::fetch( $this->mInterwiki
)->getWikiID();
866 * Get a TitleValue object representing this Title.
868 * @note Not all valid Titles have a corresponding valid TitleValue
869 * (e.g. TitleValues cannot represent page-local links that have a
870 * fragment but no title text).
872 * @return TitleValue|null
874 public function getTitleValue() {
875 if ( $this->mTitleValue
=== null ) {
877 $this->mTitleValue
= new TitleValue(
878 $this->getNamespace(),
880 $this->getFragment() );
881 } catch ( InvalidArgumentException
$ex ) {
882 wfDebug( __METHOD__
. ': Can\'t create a TitleValue for [[' .
883 $this->getPrefixedText() . ']]: ' . $ex->getMessage() . "\n" );
887 return $this->mTitleValue
;
891 * Get the text form (spaces not underscores) of the main part
893 * @return string Main part of the title
895 public function getText() {
896 return $this->mTextform
;
900 * Get the URL-encoded form of the main part
902 * @return string Main part of the title, URL-encoded
904 public function getPartialURL() {
905 return $this->mUrlform
;
909 * Get the main part with underscores
911 * @return string Main part of the title, with underscores
913 public function getDBkey() {
914 return $this->mDbkeyform
;
918 * Get the DB key with the initial letter case as specified by the user
920 * @return string DB key
922 function getUserCaseDBKey() {
923 if ( !is_null( $this->mUserCaseDBKey
) ) {
924 return $this->mUserCaseDBKey
;
926 // If created via makeTitle(), $this->mUserCaseDBKey is not set.
927 return $this->mDbkeyform
;
932 * Get the namespace index, i.e. one of the NS_xxxx constants.
934 * @return int Namespace index
936 public function getNamespace() {
937 return $this->mNamespace
;
941 * Get the page's content model id, see the CONTENT_MODEL_XXX constants.
943 * @throws MWException
944 * @return string Content model id
946 public function getContentModel() {
947 if ( !$this->mContentModel
) {
948 $linkCache = LinkCache
::singleton();
949 $this->mContentModel
= $linkCache->getGoodLinkFieldObj( $this, 'model' );
952 if ( !$this->mContentModel
) {
953 $this->mContentModel
= ContentHandler
::getDefaultModelFor( $this );
956 if ( !$this->mContentModel
) {
957 throw new MWException( 'Failed to determine content model!' );
960 return $this->mContentModel
;
964 * Convenience method for checking a title's content model name
966 * @param string $id The content model ID (use the CONTENT_MODEL_XXX constants).
967 * @return bool True if $this->getContentModel() == $id
969 public function hasContentModel( $id ) {
970 return $this->getContentModel() == $id;
974 * Get the namespace text
976 * @return string Namespace text
978 public function getNsText() {
979 if ( $this->isExternal() ) {
980 // This probably shouldn't even happen. ohh man, oh yuck.
981 // But for interwiki transclusion it sometimes does.
982 // Shit. Shit shit shit.
984 // Use the canonical namespaces if possible to try to
985 // resolve a foreign namespace.
986 if ( MWNamespace
::exists( $this->mNamespace
) ) {
987 return MWNamespace
::getCanonicalName( $this->mNamespace
);
992 $formatter = self
::getTitleFormatter();
993 return $formatter->getNamespaceName( $this->mNamespace
, $this->mDbkeyform
);
994 } catch ( InvalidArgumentException
$ex ) {
995 wfDebug( __METHOD__
. ': ' . $ex->getMessage() . "\n" );
1001 * Get the namespace text of the subject (rather than talk) page
1003 * @return string Namespace text
1005 public function getSubjectNsText() {
1007 return $wgContLang->getNsText( MWNamespace
::getSubject( $this->mNamespace
) );
1011 * Get the namespace text of the talk page
1013 * @return string Namespace text
1015 public function getTalkNsText() {
1017 return $wgContLang->getNsText( MWNamespace
::getTalk( $this->mNamespace
) );
1021 * Could this title have a corresponding talk page?
1025 public function canTalk() {
1026 return MWNamespace
::canTalk( $this->mNamespace
);
1030 * Is this in a namespace that allows actual pages?
1033 * @internal note -- uses hardcoded namespace index instead of constants
1035 public function canExist() {
1036 return $this->mNamespace
>= NS_MAIN
;
1040 * Can this title be added to a user's watchlist?
1044 public function isWatchable() {
1045 return !$this->isExternal() && MWNamespace
::isWatchable( $this->getNamespace() );
1049 * Returns true if this is a special page.
1053 public function isSpecialPage() {
1054 return $this->getNamespace() == NS_SPECIAL
;
1058 * Returns true if this title resolves to the named special page
1060 * @param string $name The special page name
1063 public function isSpecial( $name ) {
1064 if ( $this->isSpecialPage() ) {
1065 list( $thisName, /* $subpage */ ) = SpecialPageFactory
::resolveAlias( $this->getDBkey() );
1066 if ( $name == $thisName ) {
1074 * If the Title refers to a special page alias which is not the local default, resolve
1075 * the alias, and localise the name as necessary. Otherwise, return $this
1079 public function fixSpecialName() {
1080 if ( $this->isSpecialPage() ) {
1081 list( $canonicalName, $par ) = SpecialPageFactory
::resolveAlias( $this->mDbkeyform
);
1082 if ( $canonicalName ) {
1083 $localName = SpecialPageFactory
::getLocalNameFor( $canonicalName, $par );
1084 if ( $localName != $this->mDbkeyform
) {
1085 return Title
::makeTitle( NS_SPECIAL
, $localName );
1093 * Returns true if the title is inside the specified namespace.
1095 * Please make use of this instead of comparing to getNamespace()
1096 * This function is much more resistant to changes we may make
1097 * to namespaces than code that makes direct comparisons.
1098 * @param int $ns The namespace
1102 public function inNamespace( $ns ) {
1103 return MWNamespace
::equals( $this->getNamespace(), $ns );
1107 * Returns true if the title is inside one of the specified namespaces.
1109 * @param int $namespaces,... The namespaces to check for
1113 public function inNamespaces( /* ... */ ) {
1114 $namespaces = func_get_args();
1115 if ( count( $namespaces ) > 0 && is_array( $namespaces[0] ) ) {
1116 $namespaces = $namespaces[0];
1119 foreach ( $namespaces as $ns ) {
1120 if ( $this->inNamespace( $ns ) ) {
1129 * Returns true if the title has the same subject namespace as the
1130 * namespace specified.
1131 * For example this method will take NS_USER and return true if namespace
1132 * is either NS_USER or NS_USER_TALK since both of them have NS_USER
1133 * as their subject namespace.
1135 * This is MUCH simpler than individually testing for equivalence
1136 * against both NS_USER and NS_USER_TALK, and is also forward compatible.
1141 public function hasSubjectNamespace( $ns ) {
1142 return MWNamespace
::subjectEquals( $this->getNamespace(), $ns );
1146 * Is this Title in a namespace which contains content?
1147 * In other words, is this a content page, for the purposes of calculating
1152 public function isContentPage() {
1153 return MWNamespace
::isContent( $this->getNamespace() );
1157 * Would anybody with sufficient privileges be able to move this page?
1158 * Some pages just aren't movable.
1162 public function isMovable() {
1163 if ( !MWNamespace
::isMovable( $this->getNamespace() ) ||
$this->isExternal() ) {
1164 // Interwiki title or immovable namespace. Hooks don't get to override here
1169 wfRunHooks( 'TitleIsMovable', array( $this, &$result ) );
1174 * Is this the mainpage?
1175 * @note Title::newFromText seems to be sufficiently optimized by the title
1176 * cache that we don't need to over-optimize by doing direct comparisons and
1177 * accidentally creating new bugs where $title->equals( Title::newFromText() )
1178 * ends up reporting something differently than $title->isMainPage();
1183 public function isMainPage() {
1184 return $this->equals( Title
::newMainPage() );
1188 * Is this a subpage?
1192 public function isSubpage() {
1193 return MWNamespace
::hasSubpages( $this->mNamespace
)
1194 ?
strpos( $this->getText(), '/' ) !== false
1199 * Is this a conversion table for the LanguageConverter?
1203 public function isConversionTable() {
1204 // @todo ConversionTable should become a separate content model.
1206 return $this->getNamespace() == NS_MEDIAWIKI
&&
1207 strpos( $this->getText(), 'Conversiontable/' ) === 0;
1211 * Does that page contain wikitext, or it is JS, CSS or whatever?
1215 public function isWikitextPage() {
1216 return $this->hasContentModel( CONTENT_MODEL_WIKITEXT
);
1220 * Could this page contain custom CSS or JavaScript for the global UI.
1221 * This is generally true for pages in the MediaWiki namespace having CONTENT_MODEL_CSS
1222 * or CONTENT_MODEL_JAVASCRIPT.
1224 * This method does *not* return true for per-user JS/CSS. Use isCssJsSubpage()
1227 * Note that this method should not return true for pages that contain and
1228 * show "inactive" CSS or JS.
1232 public function isCssOrJsPage() {
1233 $isCssOrJsPage = NS_MEDIAWIKI
== $this->mNamespace
1234 && ( $this->hasContentModel( CONTENT_MODEL_CSS
)
1235 ||
$this->hasContentModel( CONTENT_MODEL_JAVASCRIPT
) );
1237 # @note This hook is also called in ContentHandler::getDefaultModel.
1238 # It's called here again to make sure hook functions can force this
1239 # method to return true even outside the mediawiki namespace.
1241 wfRunHooks( 'TitleIsCssOrJsPage', array( $this, &$isCssOrJsPage ) );
1243 return $isCssOrJsPage;
1247 * Is this a .css or .js subpage of a user page?
1250 public function isCssJsSubpage() {
1251 return ( NS_USER
== $this->mNamespace
&& $this->isSubpage()
1252 && ( $this->hasContentModel( CONTENT_MODEL_CSS
)
1253 ||
$this->hasContentModel( CONTENT_MODEL_JAVASCRIPT
) ) );
1257 * Trim down a .css or .js subpage title to get the corresponding skin name
1259 * @return string Containing skin name from .css or .js subpage title
1261 public function getSkinFromCssJsSubpage() {
1262 $subpage = explode( '/', $this->mTextform
);
1263 $subpage = $subpage[count( $subpage ) - 1];
1264 $lastdot = strrpos( $subpage, '.' );
1265 if ( $lastdot === false ) {
1266 return $subpage; # Never happens: only called for names ending in '.css' or '.js'
1268 return substr( $subpage, 0, $lastdot );
1272 * Is this a .css subpage of a user page?
1276 public function isCssSubpage() {
1277 return ( NS_USER
== $this->mNamespace
&& $this->isSubpage()
1278 && $this->hasContentModel( CONTENT_MODEL_CSS
) );
1282 * Is this a .js subpage of a user page?
1286 public function isJsSubpage() {
1287 return ( NS_USER
== $this->mNamespace
&& $this->isSubpage()
1288 && $this->hasContentModel( CONTENT_MODEL_JAVASCRIPT
) );
1292 * Is this a talk page of some sort?
1296 public function isTalkPage() {
1297 return MWNamespace
::isTalk( $this->getNamespace() );
1301 * Get a Title object associated with the talk page of this article
1303 * @return Title The object for the talk page
1305 public function getTalkPage() {
1306 return Title
::makeTitle( MWNamespace
::getTalk( $this->getNamespace() ), $this->getDBkey() );
1310 * Get a title object associated with the subject page of this
1313 * @return Title The object for the subject page
1315 public function getSubjectPage() {
1316 // Is this the same title?
1317 $subjectNS = MWNamespace
::getSubject( $this->getNamespace() );
1318 if ( $this->getNamespace() == $subjectNS ) {
1321 return Title
::makeTitle( $subjectNS, $this->getDBkey() );
1325 * Get the default namespace index, for when there is no namespace
1327 * @return int Default namespace index
1329 public function getDefaultNamespace() {
1330 return $this->mDefaultNamespace
;
1334 * Get the Title fragment (i.e.\ the bit after the #) in text form
1336 * Use Title::hasFragment to check for a fragment
1338 * @return string Title fragment
1340 public function getFragment() {
1341 return $this->mFragment
;
1345 * Check if a Title fragment is set
1350 public function hasFragment() {
1351 return $this->mFragment
!== '';
1355 * Get the fragment in URL form, including the "#" character if there is one
1356 * @return string Fragment in URL form
1358 public function getFragmentForURL() {
1359 if ( !$this->hasFragment() ) {
1362 return '#' . Title
::escapeFragmentForURL( $this->getFragment() );
1367 * Set the fragment for this title. Removes the first character from the
1368 * specified fragment before setting, so it assumes you're passing it with
1371 * Deprecated for public use, use Title::makeTitle() with fragment parameter.
1372 * Still in active use privately.
1374 * @param string $fragment Text
1376 public function setFragment( $fragment ) {
1377 $this->mFragment
= str_replace( '_', ' ', substr( $fragment, 1 ) );
1381 * Prefix some arbitrary text with the namespace or interwiki prefix
1384 * @param string $name The text
1385 * @return string The prefixed text
1387 private function prefix( $name ) {
1389 if ( $this->isExternal() ) {
1390 $p = $this->mInterwiki
. ':';
1393 if ( 0 != $this->mNamespace
) {
1394 $p .= $this->getNsText() . ':';
1400 * Get the prefixed database key form
1402 * @return string The prefixed title, with underscores and
1403 * any interwiki and namespace prefixes
1405 public function getPrefixedDBkey() {
1406 $s = $this->prefix( $this->mDbkeyform
);
1407 $s = str_replace( ' ', '_', $s );
1412 * Get the prefixed title with spaces.
1413 * This is the form usually used for display
1415 * @return string The prefixed title, with spaces
1417 public function getPrefixedText() {
1418 if ( $this->mPrefixedText
=== null ) {
1419 $s = $this->prefix( $this->mTextform
);
1420 $s = str_replace( '_', ' ', $s );
1421 $this->mPrefixedText
= $s;
1423 return $this->mPrefixedText
;
1427 * Return a string representation of this title
1429 * @return string Representation of this title
1431 public function __toString() {
1432 return $this->getPrefixedText();
1436 * Get the prefixed title with spaces, plus any fragment
1437 * (part beginning with '#')
1439 * @return string The prefixed title, with spaces and the fragment, including '#'
1441 public function getFullText() {
1442 $text = $this->getPrefixedText();
1443 if ( $this->hasFragment() ) {
1444 $text .= '#' . $this->getFragment();
1450 * Get the root page name text without a namespace, i.e. the leftmost part before any slashes
1454 * Title::newFromText('User:Foo/Bar/Baz')->getRootText();
1458 * @return string Root name
1461 public function getRootText() {
1462 if ( !MWNamespace
::hasSubpages( $this->mNamespace
) ) {
1463 return $this->getText();
1466 return strtok( $this->getText(), '/' );
1470 * Get the root page name title, i.e. the leftmost part before any slashes
1474 * Title::newFromText('User:Foo/Bar/Baz')->getRootTitle();
1475 * # returns: Title{User:Foo}
1478 * @return Title Root title
1481 public function getRootTitle() {
1482 return Title
::makeTitle( $this->getNamespace(), $this->getRootText() );
1486 * Get the base page name without a namespace, i.e. the part before the subpage name
1490 * Title::newFromText('User:Foo/Bar/Baz')->getBaseText();
1491 * # returns: 'Foo/Bar'
1494 * @return string Base name
1496 public function getBaseText() {
1497 if ( !MWNamespace
::hasSubpages( $this->mNamespace
) ) {
1498 return $this->getText();
1501 $parts = explode( '/', $this->getText() );
1502 # Don't discard the real title if there's no subpage involved
1503 if ( count( $parts ) > 1 ) {
1504 unset( $parts[count( $parts ) - 1] );
1506 return implode( '/', $parts );
1510 * Get the base page name title, i.e. the part before the subpage name
1514 * Title::newFromText('User:Foo/Bar/Baz')->getBaseTitle();
1515 * # returns: Title{User:Foo/Bar}
1518 * @return Title Base title
1521 public function getBaseTitle() {
1522 return Title
::makeTitle( $this->getNamespace(), $this->getBaseText() );
1526 * Get the lowest-level subpage name, i.e. the rightmost part after any slashes
1530 * Title::newFromText('User:Foo/Bar/Baz')->getSubpageText();
1534 * @return string Subpage name
1536 public function getSubpageText() {
1537 if ( !MWNamespace
::hasSubpages( $this->mNamespace
) ) {
1538 return $this->mTextform
;
1540 $parts = explode( '/', $this->mTextform
);
1541 return $parts[count( $parts ) - 1];
1545 * Get the title for a subpage of the current page
1549 * Title::newFromText('User:Foo/Bar/Baz')->getSubpage("Asdf");
1550 * # returns: Title{User:Foo/Bar/Baz/Asdf}
1553 * @param string $text The subpage name to add to the title
1554 * @return Title Subpage title
1557 public function getSubpage( $text ) {
1558 return Title
::makeTitleSafe( $this->getNamespace(), $this->getText() . '/' . $text );
1562 * Get a URL-encoded form of the subpage text
1564 * @return string URL-encoded subpage name
1566 public function getSubpageUrlForm() {
1567 $text = $this->getSubpageText();
1568 $text = wfUrlencode( str_replace( ' ', '_', $text ) );
1573 * Get a URL-encoded title (not an actual URL) including interwiki
1575 * @return string The URL-encoded form
1577 public function getPrefixedURL() {
1578 $s = $this->prefix( $this->mDbkeyform
);
1579 $s = wfUrlencode( str_replace( ' ', '_', $s ) );
1584 * Helper to fix up the get{Canonical,Full,Link,Local,Internal}URL args
1585 * get{Canonical,Full,Link,Local,Internal}URL methods accepted an optional
1586 * second argument named variant. This was deprecated in favor
1587 * of passing an array of option with a "variant" key
1588 * Once $query2 is removed for good, this helper can be dropped
1589 * and the wfArrayToCgi moved to getLocalURL();
1591 * @since 1.19 (r105919)
1592 * @param array|string $query
1593 * @param bool $query2
1596 private static function fixUrlQueryArgs( $query, $query2 = false ) {
1597 if ( $query2 !== false ) {
1598 wfDeprecated( "Title::get{Canonical,Full,Link,Local,Internal}URL " .
1599 "method called with a second parameter is deprecated. Add your " .
1600 "parameter to an array passed as the first parameter.", "1.19" );
1602 if ( is_array( $query ) ) {
1603 $query = wfArrayToCgi( $query );
1606 if ( is_string( $query2 ) ) {
1607 // $query2 is a string, we will consider this to be
1608 // a deprecated $variant argument and add it to the query
1609 $query2 = wfArrayToCgi( array( 'variant' => $query2 ) );
1611 $query2 = wfArrayToCgi( $query2 );
1613 // If we have $query content add a & to it first
1617 // Now append the queries together
1624 * Get a real URL referring to this title, with interwiki link and
1627 * @see self::getLocalURL for the arguments.
1629 * @param array|string $query
1630 * @param bool $query2
1631 * @param string $proto Protocol type to use in URL
1632 * @return string The URL
1634 public function getFullURL( $query = '', $query2 = false, $proto = PROTO_RELATIVE
) {
1635 $query = self
::fixUrlQueryArgs( $query, $query2 );
1637 # Hand off all the decisions on urls to getLocalURL
1638 $url = $this->getLocalURL( $query );
1640 # Expand the url to make it a full url. Note that getLocalURL has the
1641 # potential to output full urls for a variety of reasons, so we use
1642 # wfExpandUrl instead of simply prepending $wgServer
1643 $url = wfExpandUrl( $url, $proto );
1645 # Finally, add the fragment.
1646 $url .= $this->getFragmentForURL();
1648 wfRunHooks( 'GetFullURL', array( &$this, &$url, $query ) );
1653 * Get a URL with no fragment or server name (relative URL) from a Title object.
1654 * If this page is generated with action=render, however,
1655 * $wgServer is prepended to make an absolute URL.
1657 * @see self::getFullURL to always get an absolute URL.
1658 * @see self::newFromText to produce a Title object.
1660 * @param string|array $query An optional query string,
1661 * not used for interwiki links. Can be specified as an associative array as well,
1662 * e.g., array( 'action' => 'edit' ) (keys and values will be URL-escaped).
1663 * Some query patterns will trigger various shorturl path replacements.
1664 * @param array $query2 An optional secondary query array. This one MUST
1665 * be an array. If a string is passed it will be interpreted as a deprecated
1666 * variant argument and urlencoded into a variant= argument.
1667 * This second query argument will be added to the $query
1668 * The second parameter is deprecated since 1.19. Pass it as a key,value
1669 * pair in the first parameter array instead.
1671 * @return string String of the URL.
1673 public function getLocalURL( $query = '', $query2 = false ) {
1674 global $wgArticlePath, $wgScript, $wgServer, $wgRequest;
1676 $query = self
::fixUrlQueryArgs( $query, $query2 );
1678 $interwiki = Interwiki
::fetch( $this->mInterwiki
);
1680 $namespace = $this->getNsText();
1681 if ( $namespace != '' ) {
1682 # Can this actually happen? Interwikis shouldn't be parsed.
1683 # Yes! It can in interwiki transclusion. But... it probably shouldn't.
1686 $url = $interwiki->getURL( $namespace . $this->getDBkey() );
1687 $url = wfAppendQuery( $url, $query );
1689 $dbkey = wfUrlencode( $this->getPrefixedDBkey() );
1690 if ( $query == '' ) {
1691 $url = str_replace( '$1', $dbkey, $wgArticlePath );
1692 wfRunHooks( 'GetLocalURL::Article', array( &$this, &$url ) );
1694 global $wgVariantArticlePath, $wgActionPaths, $wgContLang;
1698 if ( !empty( $wgActionPaths )
1699 && preg_match( '/^(.*&|)action=([^&]*)(&(.*)|)$/', $query, $matches )
1701 $action = urldecode( $matches[2] );
1702 if ( isset( $wgActionPaths[$action] ) ) {
1703 $query = $matches[1];
1704 if ( isset( $matches[4] ) ) {
1705 $query .= $matches[4];
1707 $url = str_replace( '$1', $dbkey, $wgActionPaths[$action] );
1708 if ( $query != '' ) {
1709 $url = wfAppendQuery( $url, $query );
1715 && $wgVariantArticlePath
1716 && $wgContLang->getCode() === $this->getPageLanguage()->getCode()
1717 && $this->getPageLanguage()->hasVariants()
1718 && preg_match( '/^variant=([^&]*)$/', $query, $matches )
1720 $variant = urldecode( $matches[1] );
1721 if ( $this->getPageLanguage()->hasVariant( $variant ) ) {
1722 // Only do the variant replacement if the given variant is a valid
1723 // variant for the page's language.
1724 $url = str_replace( '$2', urlencode( $variant ), $wgVariantArticlePath );
1725 $url = str_replace( '$1', $dbkey, $url );
1729 if ( $url === false ) {
1730 if ( $query == '-' ) {
1733 $url = "{$wgScript}?title={$dbkey}&{$query}";
1737 wfRunHooks( 'GetLocalURL::Internal', array( &$this, &$url, $query ) );
1739 // @todo FIXME: This causes breakage in various places when we
1740 // actually expected a local URL and end up with dupe prefixes.
1741 if ( $wgRequest->getVal( 'action' ) == 'render' ) {
1742 $url = $wgServer . $url;
1745 wfRunHooks( 'GetLocalURL', array( &$this, &$url, $query ) );
1750 * Get a URL that's the simplest URL that will be valid to link, locally,
1751 * to the current Title. It includes the fragment, but does not include
1752 * the server unless action=render is used (or the link is external). If
1753 * there's a fragment but the prefixed text is empty, we just return a link
1756 * The result obviously should not be URL-escaped, but does need to be
1757 * HTML-escaped if it's being output in HTML.
1759 * @param array $query
1760 * @param bool $query2
1761 * @param string $proto Protocol to use; setting this will cause a full URL to be used
1762 * @see self::getLocalURL for the arguments.
1763 * @return string The URL
1765 public function getLinkURL( $query = '', $query2 = false, $proto = PROTO_RELATIVE
) {
1766 wfProfileIn( __METHOD__
);
1767 if ( $this->isExternal() ||
$proto !== PROTO_RELATIVE
) {
1768 $ret = $this->getFullURL( $query, $query2, $proto );
1769 } elseif ( $this->getPrefixedText() === '' && $this->hasFragment() ) {
1770 $ret = $this->getFragmentForURL();
1772 $ret = $this->getLocalURL( $query, $query2 ) . $this->getFragmentForURL();
1774 wfProfileOut( __METHOD__
);
1779 * Get the URL form for an internal link.
1780 * - Used in various Squid-related code, in case we have a different
1781 * internal hostname for the server from the exposed one.
1783 * This uses $wgInternalServer to qualify the path, or $wgServer
1784 * if $wgInternalServer is not set. If the server variable used is
1785 * protocol-relative, the URL will be expanded to http://
1787 * @see self::getLocalURL for the arguments.
1788 * @return string The URL
1790 public function getInternalURL( $query = '', $query2 = false ) {
1791 global $wgInternalServer, $wgServer;
1792 $query = self
::fixUrlQueryArgs( $query, $query2 );
1793 $server = $wgInternalServer !== false ?
$wgInternalServer : $wgServer;
1794 $url = wfExpandUrl( $server . $this->getLocalURL( $query ), PROTO_HTTP
);
1795 wfRunHooks( 'GetInternalURL', array( &$this, &$url, $query ) );
1800 * Get the URL for a canonical link, for use in things like IRC and
1801 * e-mail notifications. Uses $wgCanonicalServer and the
1802 * GetCanonicalURL hook.
1804 * NOTE: Unlike getInternalURL(), the canonical URL includes the fragment
1806 * @see self::getLocalURL for the arguments.
1807 * @return string The URL
1810 public function getCanonicalURL( $query = '', $query2 = false ) {
1811 $query = self
::fixUrlQueryArgs( $query, $query2 );
1812 $url = wfExpandUrl( $this->getLocalURL( $query ) . $this->getFragmentForURL(), PROTO_CANONICAL
);
1813 wfRunHooks( 'GetCanonicalURL', array( &$this, &$url, $query ) );
1818 * Get the edit URL for this Title
1820 * @return string The URL, or a null string if this is an interwiki link
1822 public function getEditURL() {
1823 if ( $this->isExternal() ) {
1826 $s = $this->getLocalURL( 'action=edit' );
1832 * Is $wgUser watching this page?
1834 * @deprecated since 1.20; use User::isWatched() instead.
1837 public function userIsWatching() {
1840 if ( is_null( $this->mWatched
) ) {
1841 if ( NS_SPECIAL
== $this->mNamespace ||
!$wgUser->isLoggedIn() ) {
1842 $this->mWatched
= false;
1844 $this->mWatched
= $wgUser->isWatched( $this );
1847 return $this->mWatched
;
1851 * Can $user perform $action on this page?
1852 * This skips potentially expensive cascading permission checks
1853 * as well as avoids expensive error formatting
1855 * Suitable for use for nonessential UI controls in common cases, but
1856 * _not_ for functional access control.
1858 * May provide false positives, but should never provide a false negative.
1860 * @param string $action Action that permission needs to be checked for
1861 * @param User $user User to check (since 1.19); $wgUser will be used if not provided.
1864 public function quickUserCan( $action, $user = null ) {
1865 return $this->userCan( $action, $user, false );
1869 * Can $user perform $action on this page?
1871 * @param string $action Action that permission needs to be checked for
1872 * @param User $user User to check (since 1.19); $wgUser will be used if not
1874 * @param bool $doExpensiveQueries Set this to false to avoid doing
1875 * unnecessary queries.
1878 public function userCan( $action, $user = null, $doExpensiveQueries = true ) {
1879 if ( !$user instanceof User
) {
1884 return !count( $this->getUserPermissionsErrorsInternal(
1885 $action, $user, $doExpensiveQueries, true ) );
1889 * Can $user perform $action on this page?
1891 * @todo FIXME: This *does not* check throttles (User::pingLimiter()).
1893 * @param string $action Action that permission needs to be checked for
1894 * @param User $user User to check
1895 * @param bool $doExpensiveQueries Set this to false to avoid doing unnecessary
1896 * queries by skipping checks for cascading protections and user blocks.
1897 * @param array $ignoreErrors Array of Strings Set this to a list of message keys
1898 * whose corresponding errors may be ignored.
1899 * @return array Array of arguments to wfMessage to explain permissions problems.
1901 public function getUserPermissionsErrors( $action, $user, $doExpensiveQueries = true,
1902 $ignoreErrors = array()
1904 $errors = $this->getUserPermissionsErrorsInternal( $action, $user, $doExpensiveQueries );
1906 // Remove the errors being ignored.
1907 foreach ( $errors as $index => $error ) {
1908 $error_key = is_array( $error ) ?
$error[0] : $error;
1910 if ( in_array( $error_key, $ignoreErrors ) ) {
1911 unset( $errors[$index] );
1919 * Permissions checks that fail most often, and which are easiest to test.
1921 * @param string $action The action to check
1922 * @param User $user User to check
1923 * @param array $errors List of current errors
1924 * @param bool $doExpensiveQueries Whether or not to perform expensive queries
1925 * @param bool $short Short circuit on first error
1927 * @return array List of errors
1929 private function checkQuickPermissions( $action, $user, $errors,
1930 $doExpensiveQueries, $short
1932 if ( !wfRunHooks( 'TitleQuickPermissions',
1933 array( $this, $user, $action, &$errors, $doExpensiveQueries, $short ) )
1938 if ( $action == 'create' ) {
1940 ( $this->isTalkPage() && !$user->isAllowed( 'createtalk' ) ) ||
1941 ( !$this->isTalkPage() && !$user->isAllowed( 'createpage' ) )
1943 $errors[] = $user->isAnon() ?
array( 'nocreatetext' ) : array( 'nocreate-loggedin' );
1945 } elseif ( $action == 'move' ) {
1946 if ( !$user->isAllowed( 'move-rootuserpages' )
1947 && $this->mNamespace
== NS_USER
&& !$this->isSubpage() ) {
1948 // Show user page-specific message only if the user can move other pages
1949 $errors[] = array( 'cant-move-user-page' );
1952 // Check if user is allowed to move files if it's a file
1953 if ( $this->mNamespace
== NS_FILE
&& !$user->isAllowed( 'movefile' ) ) {
1954 $errors[] = array( 'movenotallowedfile' );
1957 // Check if user is allowed to move category pages if it's a category page
1958 if ( $this->mNamespace
== NS_CATEGORY
&& !$user->isAllowed( 'move-categorypages' ) ) {
1959 $errors[] = array( 'cant-move-category-page' );
1962 if ( !$user->isAllowed( 'move' ) ) {
1963 // User can't move anything
1964 $userCanMove = User
::groupHasPermission( 'user', 'move' );
1965 $autoconfirmedCanMove = User
::groupHasPermission( 'autoconfirmed', 'move' );
1966 if ( $user->isAnon() && ( $userCanMove ||
$autoconfirmedCanMove ) ) {
1967 // custom message if logged-in users without any special rights can move
1968 $errors[] = array( 'movenologintext' );
1970 $errors[] = array( 'movenotallowed' );
1973 } elseif ( $action == 'move-target' ) {
1974 if ( !$user->isAllowed( 'move' ) ) {
1975 // User can't move anything
1976 $errors[] = array( 'movenotallowed' );
1977 } elseif ( !$user->isAllowed( 'move-rootuserpages' )
1978 && $this->mNamespace
== NS_USER
&& !$this->isSubpage() ) {
1979 // Show user page-specific message only if the user can move other pages
1980 $errors[] = array( 'cant-move-to-user-page' );
1981 } elseif ( !$user->isAllowed( 'move-categorypages' )
1982 && $this->mNamespace
== NS_CATEGORY
) {
1983 // Show category page-specific message only if the user can move other pages
1984 $errors[] = array( 'cant-move-to-category-page' );
1986 } elseif ( !$user->isAllowed( $action ) ) {
1987 $errors[] = $this->missingPermissionError( $action, $short );
1994 * Add the resulting error code to the errors array
1996 * @param array $errors List of current errors
1997 * @param array $result Result of errors
1999 * @return array List of errors
2001 private function resultToError( $errors, $result ) {
2002 if ( is_array( $result ) && count( $result ) && !is_array( $result[0] ) ) {
2003 // A single array representing an error
2004 $errors[] = $result;
2005 } elseif ( is_array( $result ) && is_array( $result[0] ) ) {
2006 // A nested array representing multiple errors
2007 $errors = array_merge( $errors, $result );
2008 } elseif ( $result !== '' && is_string( $result ) ) {
2009 // A string representing a message-id
2010 $errors[] = array( $result );
2011 } elseif ( $result === false ) {
2012 // a generic "We don't want them to do that"
2013 $errors[] = array( 'badaccess-group0' );
2019 * Check various permission hooks
2021 * @param string $action The action to check
2022 * @param User $user User to check
2023 * @param array $errors List of current errors
2024 * @param bool $doExpensiveQueries Whether or not to perform expensive queries
2025 * @param bool $short Short circuit on first error
2027 * @return array List of errors
2029 private function checkPermissionHooks( $action, $user, $errors, $doExpensiveQueries, $short ) {
2030 // Use getUserPermissionsErrors instead
2032 if ( !wfRunHooks( 'userCan', array( &$this, &$user, $action, &$result ) ) ) {
2033 return $result ?
array() : array( array( 'badaccess-group0' ) );
2035 // Check getUserPermissionsErrors hook
2036 if ( !wfRunHooks( 'getUserPermissionsErrors', array( &$this, &$user, $action, &$result ) ) ) {
2037 $errors = $this->resultToError( $errors, $result );
2039 // Check getUserPermissionsErrorsExpensive hook
2042 && !( $short && count( $errors ) > 0 )
2043 && !wfRunHooks( 'getUserPermissionsErrorsExpensive', array( &$this, &$user, $action, &$result ) )
2045 $errors = $this->resultToError( $errors, $result );
2052 * Check permissions on special pages & namespaces
2054 * @param string $action The action to check
2055 * @param User $user User to check
2056 * @param array $errors List of current errors
2057 * @param bool $doExpensiveQueries Whether or not to perform expensive queries
2058 * @param bool $short Short circuit on first error
2060 * @return array List of errors
2062 private function checkSpecialsAndNSPermissions( $action, $user, $errors,
2063 $doExpensiveQueries, $short
2065 # Only 'createaccount' can be performed on special pages,
2066 # which don't actually exist in the DB.
2067 if ( NS_SPECIAL
== $this->mNamespace
&& $action !== 'createaccount' ) {
2068 $errors[] = array( 'ns-specialprotected' );
2071 # Check $wgNamespaceProtection for restricted namespaces
2072 if ( $this->isNamespaceProtected( $user ) ) {
2073 $ns = $this->mNamespace
== NS_MAIN ?
2074 wfMessage( 'nstab-main' )->text() : $this->getNsText();
2075 $errors[] = $this->mNamespace
== NS_MEDIAWIKI ?
2076 array( 'protectedinterface' ) : array( 'namespaceprotected', $ns );
2083 * Check CSS/JS sub-page permissions
2085 * @param string $action The action to check
2086 * @param User $user User to check
2087 * @param array $errors List of current errors
2088 * @param bool $doExpensiveQueries Whether or not to perform expensive queries
2089 * @param bool $short Short circuit on first error
2091 * @return array List of errors
2093 private function checkCSSandJSPermissions( $action, $user, $errors, $doExpensiveQueries, $short ) {
2094 # Protect css/js subpages of user pages
2095 # XXX: this might be better using restrictions
2096 # XXX: right 'editusercssjs' is deprecated, for backward compatibility only
2097 if ( $action != 'patrol' && !$user->isAllowed( 'editusercssjs' ) ) {
2098 if ( preg_match( '/^' . preg_quote( $user->getName(), '/' ) . '\//', $this->mTextform
) ) {
2099 if ( $this->isCssSubpage() && !$user->isAllowedAny( 'editmyusercss', 'editusercss' ) ) {
2100 $errors[] = array( 'mycustomcssprotected' );
2101 } elseif ( $this->isJsSubpage() && !$user->isAllowedAny( 'editmyuserjs', 'edituserjs' ) ) {
2102 $errors[] = array( 'mycustomjsprotected' );
2105 if ( $this->isCssSubpage() && !$user->isAllowed( 'editusercss' ) ) {
2106 $errors[] = array( 'customcssprotected' );
2107 } elseif ( $this->isJsSubpage() && !$user->isAllowed( 'edituserjs' ) ) {
2108 $errors[] = array( 'customjsprotected' );
2117 * Check against page_restrictions table requirements on this
2118 * page. The user must possess all required rights for this
2121 * @param string $action The action to check
2122 * @param User $user User to check
2123 * @param array $errors List of current errors
2124 * @param bool $doExpensiveQueries Whether or not to perform expensive queries
2125 * @param bool $short Short circuit on first error
2127 * @return array List of errors
2129 private function checkPageRestrictions( $action, $user, $errors, $doExpensiveQueries, $short ) {
2130 foreach ( $this->getRestrictions( $action ) as $right ) {
2131 // Backwards compatibility, rewrite sysop -> editprotected
2132 if ( $right == 'sysop' ) {
2133 $right = 'editprotected';
2135 // Backwards compatibility, rewrite autoconfirmed -> editsemiprotected
2136 if ( $right == 'autoconfirmed' ) {
2137 $right = 'editsemiprotected';
2139 if ( $right == '' ) {
2142 if ( !$user->isAllowed( $right ) ) {
2143 $errors[] = array( 'protectedpagetext', $right );
2144 } elseif ( $this->mCascadeRestriction
&& !$user->isAllowed( 'protect' ) ) {
2145 $errors[] = array( 'protectedpagetext', 'protect' );
2153 * Check restrictions on cascading pages.
2155 * @param string $action The action to check
2156 * @param User $user User to check
2157 * @param array $errors List of current errors
2158 * @param bool $doExpensiveQueries Whether or not to perform expensive queries
2159 * @param bool $short Short circuit on first error
2161 * @return array List of errors
2163 private function checkCascadingSourcesRestrictions( $action, $user, $errors,
2164 $doExpensiveQueries, $short
2166 if ( $doExpensiveQueries && !$this->isCssJsSubpage() ) {
2167 # We /could/ use the protection level on the source page, but it's
2168 # fairly ugly as we have to establish a precedence hierarchy for pages
2169 # included by multiple cascade-protected pages. So just restrict
2170 # it to people with 'protect' permission, as they could remove the
2171 # protection anyway.
2172 list( $cascadingSources, $restrictions ) = $this->getCascadeProtectionSources();
2173 # Cascading protection depends on more than this page...
2174 # Several cascading protected pages may include this page...
2175 # Check each cascading level
2176 # This is only for protection restrictions, not for all actions
2177 if ( isset( $restrictions[$action] ) ) {
2178 foreach ( $restrictions[$action] as $right ) {
2179 // Backwards compatibility, rewrite sysop -> editprotected
2180 if ( $right == 'sysop' ) {
2181 $right = 'editprotected';
2183 // Backwards compatibility, rewrite autoconfirmed -> editsemiprotected
2184 if ( $right == 'autoconfirmed' ) {
2185 $right = 'editsemiprotected';
2187 if ( $right != '' && !$user->isAllowedAll( 'protect', $right ) ) {
2189 foreach ( $cascadingSources as $page ) {
2190 $pages .= '* [[:' . $page->getPrefixedText() . "]]\n";
2192 $errors[] = array( 'cascadeprotected', count( $cascadingSources ), $pages );
2202 * Check action permissions not already checked in checkQuickPermissions
2204 * @param string $action The action to check
2205 * @param User $user User to check
2206 * @param array $errors List of current errors
2207 * @param bool $doExpensiveQueries Whether or not to perform expensive queries
2208 * @param bool $short Short circuit on first error
2210 * @return array List of errors
2212 private function checkActionPermissions( $action, $user, $errors,
2213 $doExpensiveQueries, $short
2215 global $wgDeleteRevisionsLimit, $wgLang;
2217 if ( $action == 'protect' ) {
2218 if ( count( $this->getUserPermissionsErrorsInternal( 'edit',
2219 $user, $doExpensiveQueries, true ) )
2221 // If they can't edit, they shouldn't protect.
2222 $errors[] = array( 'protect-cantedit' );
2224 } elseif ( $action == 'create' ) {
2225 $title_protection = $this->getTitleProtection();
2226 if ( $title_protection ) {
2227 if ( $title_protection['pt_create_perm'] == 'sysop' ) {
2228 $title_protection['pt_create_perm'] = 'editprotected'; // B/C
2230 if ( $title_protection['pt_create_perm'] == 'autoconfirmed' ) {
2231 $title_protection['pt_create_perm'] = 'editsemiprotected'; // B/C
2233 if ( $title_protection['pt_create_perm'] == ''
2234 ||
!$user->isAllowed( $title_protection['pt_create_perm'] )
2238 User
::whoIs( $title_protection['pt_user'] ),
2239 $title_protection['pt_reason']
2243 } elseif ( $action == 'move' ) {
2244 // Check for immobile pages
2245 if ( !MWNamespace
::isMovable( $this->mNamespace
) ) {
2246 // Specific message for this case
2247 $errors[] = array( 'immobile-source-namespace', $this->getNsText() );
2248 } elseif ( !$this->isMovable() ) {
2249 // Less specific message for rarer cases
2250 $errors[] = array( 'immobile-source-page' );
2252 } elseif ( $action == 'move-target' ) {
2253 if ( !MWNamespace
::isMovable( $this->mNamespace
) ) {
2254 $errors[] = array( 'immobile-target-namespace', $this->getNsText() );
2255 } elseif ( !$this->isMovable() ) {
2256 $errors[] = array( 'immobile-target-page' );
2258 } elseif ( $action == 'delete' ) {
2259 if ( $doExpensiveQueries && $wgDeleteRevisionsLimit
2260 && !$this->userCan( 'bigdelete', $user ) && $this->isBigDeletion()
2262 $errors[] = array( 'delete-toobig', $wgLang->formatNum( $wgDeleteRevisionsLimit ) );
2269 * Check that the user isn't blocked from editing.
2271 * @param string $action The action to check
2272 * @param User $user User to check
2273 * @param array $errors List of current errors
2274 * @param bool $doExpensiveQueries Whether or not to perform expensive queries
2275 * @param bool $short Short circuit on first error
2277 * @return array List of errors
2279 private function checkUserBlock( $action, $user, $errors, $doExpensiveQueries, $short ) {
2280 // Account creation blocks handled at userlogin.
2281 // Unblocking handled in SpecialUnblock
2282 if ( !$doExpensiveQueries ||
in_array( $action, array( 'createaccount', 'unblock' ) ) ) {
2286 global $wgEmailConfirmToEdit;
2288 if ( $wgEmailConfirmToEdit && !$user->isEmailConfirmed() ) {
2289 $errors[] = array( 'confirmedittext' );
2292 if ( ( $action == 'edit' ||
$action == 'create' ) && !$user->isBlockedFrom( $this ) ) {
2293 // Don't block the user from editing their own talk page unless they've been
2294 // explicitly blocked from that too.
2295 } elseif ( $user->isBlocked() && $user->mBlock
->prevents( $action ) !== false ) {
2296 // @todo FIXME: Pass the relevant context into this function.
2297 $errors[] = $user->getBlock()->getPermissionsError( RequestContext
::getMain() );
2304 * Check that the user is allowed to read this page.
2306 * @param string $action The action to check
2307 * @param User $user User to check
2308 * @param array $errors List of current errors
2309 * @param bool $doExpensiveQueries Whether or not to perform expensive queries
2310 * @param bool $short Short circuit on first error
2312 * @return array List of errors
2314 private function checkReadPermissions( $action, $user, $errors, $doExpensiveQueries, $short ) {
2315 global $wgWhitelistRead, $wgWhitelistReadRegexp;
2317 $whitelisted = false;
2318 if ( User
::isEveryoneAllowed( 'read' ) ) {
2319 # Shortcut for public wikis, allows skipping quite a bit of code
2320 $whitelisted = true;
2321 } elseif ( $user->isAllowed( 'read' ) ) {
2322 # If the user is allowed to read pages, he is allowed to read all pages
2323 $whitelisted = true;
2324 } elseif ( $this->isSpecial( 'Userlogin' )
2325 ||
$this->isSpecial( 'ChangePassword' )
2326 ||
$this->isSpecial( 'PasswordReset' )
2328 # Always grant access to the login page.
2329 # Even anons need to be able to log in.
2330 $whitelisted = true;
2331 } elseif ( is_array( $wgWhitelistRead ) && count( $wgWhitelistRead ) ) {
2332 # Time to check the whitelist
2333 # Only do these checks is there's something to check against
2334 $name = $this->getPrefixedText();
2335 $dbName = $this->getPrefixedDBkey();
2337 // Check for explicit whitelisting with and without underscores
2338 if ( in_array( $name, $wgWhitelistRead, true ) ||
in_array( $dbName, $wgWhitelistRead, true ) ) {
2339 $whitelisted = true;
2340 } elseif ( $this->getNamespace() == NS_MAIN
) {
2341 # Old settings might have the title prefixed with
2342 # a colon for main-namespace pages
2343 if ( in_array( ':' . $name, $wgWhitelistRead ) ) {
2344 $whitelisted = true;
2346 } elseif ( $this->isSpecialPage() ) {
2347 # If it's a special page, ditch the subpage bit and check again
2348 $name = $this->getDBkey();
2349 list( $name, /* $subpage */ ) = SpecialPageFactory
::resolveAlias( $name );
2351 $pure = SpecialPage
::getTitleFor( $name )->getPrefixedText();
2352 if ( in_array( $pure, $wgWhitelistRead, true ) ) {
2353 $whitelisted = true;
2359 if ( !$whitelisted && is_array( $wgWhitelistReadRegexp ) && !empty( $wgWhitelistReadRegexp ) ) {
2360 $name = $this->getPrefixedText();
2361 // Check for regex whitelisting
2362 foreach ( $wgWhitelistReadRegexp as $listItem ) {
2363 if ( preg_match( $listItem, $name ) ) {
2364 $whitelisted = true;
2370 if ( !$whitelisted ) {
2371 # If the title is not whitelisted, give extensions a chance to do so...
2372 wfRunHooks( 'TitleReadWhitelist', array( $this, $user, &$whitelisted ) );
2373 if ( !$whitelisted ) {
2374 $errors[] = $this->missingPermissionError( $action, $short );
2382 * Get a description array when the user doesn't have the right to perform
2383 * $action (i.e. when User::isAllowed() returns false)
2385 * @param string $action The action to check
2386 * @param bool $short Short circuit on first error
2387 * @return array List of errors
2389 private function missingPermissionError( $action, $short ) {
2390 // We avoid expensive display logic for quickUserCan's and such
2392 return array( 'badaccess-group0' );
2395 $groups = array_map( array( 'User', 'makeGroupLinkWiki' ),
2396 User
::getGroupsWithPermission( $action ) );
2398 if ( count( $groups ) ) {
2402 $wgLang->commaList( $groups ),
2406 return array( 'badaccess-group0' );
2411 * Can $user perform $action on this page? This is an internal function,
2412 * which checks ONLY that previously checked by userCan (i.e. it leaves out
2413 * checks on wfReadOnly() and blocks)
2415 * @param string $action Action that permission needs to be checked for
2416 * @param User $user User to check
2417 * @param bool $doExpensiveQueries Set this to false to avoid doing unnecessary queries.
2418 * @param bool $short Set this to true to stop after the first permission error.
2419 * @return array Array of arrays of the arguments to wfMessage to explain permissions problems.
2421 protected function getUserPermissionsErrorsInternal( $action, $user,
2422 $doExpensiveQueries = true, $short = false
2424 wfProfileIn( __METHOD__
);
2426 # Read has special handling
2427 if ( $action == 'read' ) {
2429 'checkPermissionHooks',
2430 'checkReadPermissions',
2434 'checkQuickPermissions',
2435 'checkPermissionHooks',
2436 'checkSpecialsAndNSPermissions',
2437 'checkCSSandJSPermissions',
2438 'checkPageRestrictions',
2439 'checkCascadingSourcesRestrictions',
2440 'checkActionPermissions',
2446 while ( count( $checks ) > 0 &&
2447 !( $short && count( $errors ) > 0 ) ) {
2448 $method = array_shift( $checks );
2449 $errors = $this->$method( $action, $user, $errors, $doExpensiveQueries, $short );
2452 wfProfileOut( __METHOD__
);
2457 * Get a filtered list of all restriction types supported by this wiki.
2458 * @param bool $exists True to get all restriction types that apply to
2459 * titles that do exist, False for all restriction types that apply to
2460 * titles that do not exist
2463 public static function getFilteredRestrictionTypes( $exists = true ) {
2464 global $wgRestrictionTypes;
2465 $types = $wgRestrictionTypes;
2467 # Remove the create restriction for existing titles
2468 $types = array_diff( $types, array( 'create' ) );
2470 # Only the create and upload restrictions apply to non-existing titles
2471 $types = array_intersect( $types, array( 'create', 'upload' ) );
2477 * Returns restriction types for the current Title
2479 * @return array Applicable restriction types
2481 public function getRestrictionTypes() {
2482 if ( $this->isSpecialPage() ) {
2486 $types = self
::getFilteredRestrictionTypes( $this->exists() );
2488 if ( $this->getNamespace() != NS_FILE
) {
2489 # Remove the upload restriction for non-file titles
2490 $types = array_diff( $types, array( 'upload' ) );
2493 wfRunHooks( 'TitleGetRestrictionTypes', array( $this, &$types ) );
2495 wfDebug( __METHOD__
. ': applicable restrictions to [[' .
2496 $this->getPrefixedText() . ']] are {' . implode( ',', $types ) . "}\n" );
2502 * Is this title subject to title protection?
2503 * Title protection is the one applied against creation of such title.
2505 * @return array|bool An associative array representing any existent title
2506 * protection, or false if there's none.
2508 private function getTitleProtection() {
2509 // Can't protect pages in special namespaces
2510 if ( $this->getNamespace() < 0 ) {
2514 // Can't protect pages that exist.
2515 if ( $this->exists() ) {
2519 if ( $this->mTitleProtection
=== null ) {
2520 $dbr = wfGetDB( DB_SLAVE
);
2521 $res = $dbr->select(
2523 array( 'pt_user', 'pt_reason', 'pt_expiry', 'pt_create_perm' ),
2524 array( 'pt_namespace' => $this->getNamespace(), 'pt_title' => $this->getDBkey() ),
2528 // fetchRow returns false if there are no rows.
2529 $this->mTitleProtection
= $dbr->fetchRow( $res );
2531 return $this->mTitleProtection
;
2535 * Remove any title protection due to page existing
2537 public function deleteTitleProtection() {
2538 $dbw = wfGetDB( DB_MASTER
);
2542 array( 'pt_namespace' => $this->getNamespace(), 'pt_title' => $this->getDBkey() ),
2545 $this->mTitleProtection
= false;
2549 * Is this page "semi-protected" - the *only* protection levels are listed
2550 * in $wgSemiprotectedRestrictionLevels?
2552 * @param string $action Action to check (default: edit)
2555 public function isSemiProtected( $action = 'edit' ) {
2556 global $wgSemiprotectedRestrictionLevels;
2558 $restrictions = $this->getRestrictions( $action );
2559 $semi = $wgSemiprotectedRestrictionLevels;
2560 if ( !$restrictions ||
!$semi ) {
2561 // Not protected, or all protection is full protection
2565 // Remap autoconfirmed to editsemiprotected for BC
2566 foreach ( array_keys( $semi, 'autoconfirmed' ) as $key ) {
2567 $semi[$key] = 'editsemiprotected';
2569 foreach ( array_keys( $restrictions, 'autoconfirmed' ) as $key ) {
2570 $restrictions[$key] = 'editsemiprotected';
2573 return !array_diff( $restrictions, $semi );
2577 * Does the title correspond to a protected article?
2579 * @param string $action The action the page is protected from,
2580 * by default checks all actions.
2583 public function isProtected( $action = '' ) {
2584 global $wgRestrictionLevels;
2586 $restrictionTypes = $this->getRestrictionTypes();
2588 # Special pages have inherent protection
2589 if ( $this->isSpecialPage() ) {
2593 # Check regular protection levels
2594 foreach ( $restrictionTypes as $type ) {
2595 if ( $action == $type ||
$action == '' ) {
2596 $r = $this->getRestrictions( $type );
2597 foreach ( $wgRestrictionLevels as $level ) {
2598 if ( in_array( $level, $r ) && $level != '' ) {
2609 * Determines if $user is unable to edit this page because it has been protected
2610 * by $wgNamespaceProtection.
2612 * @param User $user User object to check permissions
2615 public function isNamespaceProtected( User
$user ) {
2616 global $wgNamespaceProtection;
2618 if ( isset( $wgNamespaceProtection[$this->mNamespace
] ) ) {
2619 foreach ( (array)$wgNamespaceProtection[$this->mNamespace
] as $right ) {
2620 if ( $right != '' && !$user->isAllowed( $right ) ) {
2629 * Cascading protection: Return true if cascading restrictions apply to this page, false if not.
2631 * @return bool If the page is subject to cascading restrictions.
2633 public function isCascadeProtected() {
2634 list( $sources, /* $restrictions */ ) = $this->getCascadeProtectionSources( false );
2635 return ( $sources > 0 );
2639 * Determines whether cascading protection sources have already been loaded from
2642 * @param bool $getPages True to check if the pages are loaded, or false to check
2643 * if the status is loaded.
2644 * @return bool Whether or not the specified information has been loaded
2647 public function areCascadeProtectionSourcesLoaded( $getPages = true ) {
2648 return $getPages ?
$this->mCascadeSources
!== null : $this->mHasCascadingRestrictions
!== null;
2652 * Cascading protection: Get the source of any cascading restrictions on this page.
2654 * @param bool $getPages Whether or not to retrieve the actual pages
2655 * that the restrictions have come from and the actual restrictions
2657 * @return array Two elements: First is an array of Title objects of the
2658 * pages from which cascading restrictions have come, false for
2659 * none, or true if such restrictions exist but $getPages was not
2660 * set. Second is an array like that returned by
2661 * Title::getAllRestrictions(), or an empty array if $getPages is
2664 public function getCascadeProtectionSources( $getPages = true ) {
2666 $pagerestrictions = array();
2668 if ( $this->mCascadeSources
!== null && $getPages ) {
2669 return array( $this->mCascadeSources
, $this->mCascadingRestrictions
);
2670 } elseif ( $this->mHasCascadingRestrictions
!== null && !$getPages ) {
2671 return array( $this->mHasCascadingRestrictions
, $pagerestrictions );
2674 wfProfileIn( __METHOD__
);
2676 $dbr = wfGetDB( DB_SLAVE
);
2678 if ( $this->getNamespace() == NS_FILE
) {
2679 $tables = array( 'imagelinks', 'page_restrictions' );
2680 $where_clauses = array(
2681 'il_to' => $this->getDBkey(),
2686 $tables = array( 'templatelinks', 'page_restrictions' );
2687 $where_clauses = array(
2688 'tl_namespace' => $this->getNamespace(),
2689 'tl_title' => $this->getDBkey(),
2696 $cols = array( 'pr_page', 'page_namespace', 'page_title',
2697 'pr_expiry', 'pr_type', 'pr_level' );
2698 $where_clauses[] = 'page_id=pr_page';
2701 $cols = array( 'pr_expiry' );
2704 $res = $dbr->select( $tables, $cols, $where_clauses, __METHOD__
);
2706 $sources = $getPages ?
array() : false;
2707 $now = wfTimestampNow();
2708 $purgeExpired = false;
2710 foreach ( $res as $row ) {
2711 $expiry = $wgContLang->formatExpiry( $row->pr_expiry
, TS_MW
);
2712 if ( $expiry > $now ) {
2714 $page_id = $row->pr_page
;
2715 $page_ns = $row->page_namespace
;
2716 $page_title = $row->page_title
;
2717 $sources[$page_id] = Title
::makeTitle( $page_ns, $page_title );
2718 # Add groups needed for each restriction type if its not already there
2719 # Make sure this restriction type still exists
2721 if ( !isset( $pagerestrictions[$row->pr_type
] ) ) {
2722 $pagerestrictions[$row->pr_type
] = array();
2726 isset( $pagerestrictions[$row->pr_type
] )
2727 && !in_array( $row->pr_level
, $pagerestrictions[$row->pr_type
] )
2729 $pagerestrictions[$row->pr_type
][] = $row->pr_level
;
2735 // Trigger lazy purge of expired restrictions from the db
2736 $purgeExpired = true;
2739 if ( $purgeExpired ) {
2740 Title
::purgeExpiredRestrictions();
2744 $this->mCascadeSources
= $sources;
2745 $this->mCascadingRestrictions
= $pagerestrictions;
2747 $this->mHasCascadingRestrictions
= $sources;
2750 wfProfileOut( __METHOD__
);
2751 return array( $sources, $pagerestrictions );
2755 * Accessor for mRestrictionsLoaded
2757 * @return bool Whether or not the page's restrictions have already been
2758 * loaded from the database
2761 public function areRestrictionsLoaded() {
2762 return $this->mRestrictionsLoaded
;
2766 * Accessor/initialisation for mRestrictions
2768 * @param string $action Action that permission needs to be checked for
2769 * @return array Restriction levels needed to take the action. All levels
2772 public function getRestrictions( $action ) {
2773 if ( !$this->mRestrictionsLoaded
) {
2774 $this->loadRestrictions();
2776 return isset( $this->mRestrictions
[$action] )
2777 ?
$this->mRestrictions
[$action]
2782 * Accessor/initialisation for mRestrictions
2784 * @return array Keys are actions, values are arrays as returned by
2785 * Title::getRestrictions()
2788 public function getAllRestrictions() {
2789 if ( !$this->mRestrictionsLoaded
) {
2790 $this->loadRestrictions();
2792 return $this->mRestrictions
;
2796 * Get the expiry time for the restriction against a given action
2798 * @param string $action
2799 * @return string|bool 14-char timestamp, or 'infinity' if the page is protected forever
2800 * or not protected at all, or false if the action is not recognised.
2802 public function getRestrictionExpiry( $action ) {
2803 if ( !$this->mRestrictionsLoaded
) {
2804 $this->loadRestrictions();
2806 return isset( $this->mRestrictionsExpiry
[$action] ) ?
$this->mRestrictionsExpiry
[$action] : false;
2810 * Returns cascading restrictions for the current article
2814 function areRestrictionsCascading() {
2815 if ( !$this->mRestrictionsLoaded
) {
2816 $this->loadRestrictions();
2819 return $this->mCascadeRestriction
;
2823 * Loads a string into mRestrictions array
2825 * @param ResultWrapper $res Resource restrictions as an SQL result.
2826 * @param string $oldFashionedRestrictions Comma-separated list of page
2827 * restrictions from page table (pre 1.10)
2829 private function loadRestrictionsFromResultWrapper( $res, $oldFashionedRestrictions = null ) {
2832 foreach ( $res as $row ) {
2836 $this->loadRestrictionsFromRows( $rows, $oldFashionedRestrictions );
2840 * Compiles list of active page restrictions from both page table (pre 1.10)
2841 * and page_restrictions table for this existing page.
2842 * Public for usage by LiquidThreads.
2844 * @param array $rows Array of db result objects
2845 * @param string $oldFashionedRestrictions Comma-separated list of page
2846 * restrictions from page table (pre 1.10)
2848 public function loadRestrictionsFromRows( $rows, $oldFashionedRestrictions = null ) {
2850 $dbr = wfGetDB( DB_SLAVE
);
2852 $restrictionTypes = $this->getRestrictionTypes();
2854 foreach ( $restrictionTypes as $type ) {
2855 $this->mRestrictions
[$type] = array();
2856 $this->mRestrictionsExpiry
[$type] = $wgContLang->formatExpiry( '', TS_MW
);
2859 $this->mCascadeRestriction
= false;
2861 # Backwards-compatibility: also load the restrictions from the page record (old format).
2863 if ( $oldFashionedRestrictions === null ) {
2864 $oldFashionedRestrictions = $dbr->selectField( 'page', 'page_restrictions',
2865 array( 'page_id' => $this->getArticleID() ), __METHOD__
);
2868 if ( $oldFashionedRestrictions != '' ) {
2870 foreach ( explode( ':', trim( $oldFashionedRestrictions ) ) as $restrict ) {
2871 $temp = explode( '=', trim( $restrict ) );
2872 if ( count( $temp ) == 1 ) {
2873 // old old format should be treated as edit/move restriction
2874 $this->mRestrictions
['edit'] = explode( ',', trim( $temp[0] ) );
2875 $this->mRestrictions
['move'] = explode( ',', trim( $temp[0] ) );
2877 $restriction = trim( $temp[1] );
2878 if ( $restriction != '' ) { //some old entries are empty
2879 $this->mRestrictions
[$temp[0]] = explode( ',', $restriction );
2884 $this->mOldRestrictions
= true;
2888 if ( count( $rows ) ) {
2889 # Current system - load second to make them override.
2890 $now = wfTimestampNow();
2891 $purgeExpired = false;
2893 # Cycle through all the restrictions.
2894 foreach ( $rows as $row ) {
2896 // Don't take care of restrictions types that aren't allowed
2897 if ( !in_array( $row->pr_type
, $restrictionTypes ) ) {
2901 // This code should be refactored, now that it's being used more generally,
2902 // But I don't really see any harm in leaving it in Block for now -werdna
2903 $expiry = $wgContLang->formatExpiry( $row->pr_expiry
, TS_MW
);
2905 // Only apply the restrictions if they haven't expired!
2906 if ( !$expiry ||
$expiry > $now ) {
2907 $this->mRestrictionsExpiry
[$row->pr_type
] = $expiry;
2908 $this->mRestrictions
[$row->pr_type
] = explode( ',', trim( $row->pr_level
) );
2910 $this->mCascadeRestriction |
= $row->pr_cascade
;
2912 // Trigger a lazy purge of expired restrictions
2913 $purgeExpired = true;
2917 if ( $purgeExpired ) {
2918 Title
::purgeExpiredRestrictions();
2922 $this->mRestrictionsLoaded
= true;
2926 * Load restrictions from the page_restrictions table
2928 * @param string $oldFashionedRestrictions Comma-separated list of page
2929 * restrictions from page table (pre 1.10)
2931 public function loadRestrictions( $oldFashionedRestrictions = null ) {
2933 if ( !$this->mRestrictionsLoaded
) {
2934 if ( $this->exists() ) {
2935 $dbr = wfGetDB( DB_SLAVE
);
2937 $res = $dbr->select(
2938 'page_restrictions',
2939 array( 'pr_type', 'pr_expiry', 'pr_level', 'pr_cascade' ),
2940 array( 'pr_page' => $this->getArticleID() ),
2944 $this->loadRestrictionsFromResultWrapper( $res, $oldFashionedRestrictions );
2946 $title_protection = $this->getTitleProtection();
2948 if ( $title_protection ) {
2949 $now = wfTimestampNow();
2950 $expiry = $wgContLang->formatExpiry( $title_protection['pt_expiry'], TS_MW
);
2952 if ( !$expiry ||
$expiry > $now ) {
2953 // Apply the restrictions
2954 $this->mRestrictionsExpiry
['create'] = $expiry;
2955 $this->mRestrictions
['create'] = explode( ',', trim( $title_protection['pt_create_perm'] ) );
2956 } else { // Get rid of the old restrictions
2957 Title
::purgeExpiredRestrictions();
2958 $this->mTitleProtection
= false;
2961 $this->mRestrictionsExpiry
['create'] = $wgContLang->formatExpiry( '', TS_MW
);
2963 $this->mRestrictionsLoaded
= true;
2969 * Flush the protection cache in this object and force reload from the database.
2970 * This is used when updating protection from WikiPage::doUpdateRestrictions().
2972 public function flushRestrictions() {
2973 $this->mRestrictionsLoaded
= false;
2974 $this->mTitleProtection
= null;
2978 * Purge expired restrictions from the page_restrictions table
2980 static function purgeExpiredRestrictions() {
2981 if ( wfReadOnly() ) {
2985 $method = __METHOD__
;
2986 $dbw = wfGetDB( DB_MASTER
);
2987 $dbw->onTransactionIdle( function () use ( $dbw, $method ) {
2989 'page_restrictions',
2990 array( 'pr_expiry < ' . $dbw->addQuotes( $dbw->timestamp() ) ),
2995 array( 'pt_expiry < ' . $dbw->addQuotes( $dbw->timestamp() ) ),
3002 * Does this have subpages? (Warning, usually requires an extra DB query.)
3006 public function hasSubpages() {
3007 if ( !MWNamespace
::hasSubpages( $this->mNamespace
) ) {
3012 # We dynamically add a member variable for the purpose of this method
3013 # alone to cache the result. There's no point in having it hanging
3014 # around uninitialized in every Title object; therefore we only add it
3015 # if needed and don't declare it statically.
3016 if ( $this->mHasSubpages
=== null ) {
3017 $this->mHasSubpages
= false;
3018 $subpages = $this->getSubpages( 1 );
3019 if ( $subpages instanceof TitleArray
) {
3020 $this->mHasSubpages
= (bool)$subpages->count();
3024 return $this->mHasSubpages
;
3028 * Get all subpages of this page.
3030 * @param int $limit Maximum number of subpages to fetch; -1 for no limit
3031 * @return TitleArray|array TitleArray, or empty array if this page's namespace
3032 * doesn't allow subpages
3034 public function getSubpages( $limit = -1 ) {
3035 if ( !MWNamespace
::hasSubpages( $this->getNamespace() ) ) {
3039 $dbr = wfGetDB( DB_SLAVE
);
3040 $conds['page_namespace'] = $this->getNamespace();
3041 $conds[] = 'page_title ' . $dbr->buildLike( $this->getDBkey() . '/', $dbr->anyString() );
3043 if ( $limit > -1 ) {
3044 $options['LIMIT'] = $limit;
3046 $this->mSubpages
= TitleArray
::newFromResult(
3047 $dbr->select( 'page',
3048 array( 'page_id', 'page_namespace', 'page_title', 'page_is_redirect' ),
3054 return $this->mSubpages
;
3058 * Is there a version of this page in the deletion archive?
3060 * @return int The number of archived revisions
3062 public function isDeleted() {
3063 if ( $this->getNamespace() < 0 ) {
3066 $dbr = wfGetDB( DB_SLAVE
);
3068 $n = $dbr->selectField( 'archive', 'COUNT(*)',
3069 array( 'ar_namespace' => $this->getNamespace(), 'ar_title' => $this->getDBkey() ),
3072 if ( $this->getNamespace() == NS_FILE
) {
3073 $n +
= $dbr->selectField( 'filearchive', 'COUNT(*)',
3074 array( 'fa_name' => $this->getDBkey() ),
3083 * Is there a version of this page in the deletion archive?
3087 public function isDeletedQuick() {
3088 if ( $this->getNamespace() < 0 ) {
3091 $dbr = wfGetDB( DB_SLAVE
);
3092 $deleted = (bool)$dbr->selectField( 'archive', '1',
3093 array( 'ar_namespace' => $this->getNamespace(), 'ar_title' => $this->getDBkey() ),
3096 if ( !$deleted && $this->getNamespace() == NS_FILE
) {
3097 $deleted = (bool)$dbr->selectField( 'filearchive', '1',
3098 array( 'fa_name' => $this->getDBkey() ),
3106 * Get the article ID for this Title from the link cache,
3107 * adding it if necessary
3109 * @param int $flags A bit field; may be Title::GAID_FOR_UPDATE to select
3111 * @return int The ID
3113 public function getArticleID( $flags = 0 ) {
3114 if ( $this->getNamespace() < 0 ) {
3115 $this->mArticleID
= 0;
3116 return $this->mArticleID
;
3118 $linkCache = LinkCache
::singleton();
3119 if ( $flags & self
::GAID_FOR_UPDATE
) {
3120 $oldUpdate = $linkCache->forUpdate( true );
3121 $linkCache->clearLink( $this );
3122 $this->mArticleID
= $linkCache->addLinkObj( $this );
3123 $linkCache->forUpdate( $oldUpdate );
3125 if ( -1 == $this->mArticleID
) {
3126 $this->mArticleID
= $linkCache->addLinkObj( $this );
3129 return $this->mArticleID
;
3133 * Is this an article that is a redirect page?
3134 * Uses link cache, adding it if necessary
3136 * @param int $flags A bit field; may be Title::GAID_FOR_UPDATE to select for update
3139 public function isRedirect( $flags = 0 ) {
3140 if ( !is_null( $this->mRedirect
) ) {
3141 return $this->mRedirect
;
3143 # Calling getArticleID() loads the field from cache as needed
3144 if ( !$this->getArticleID( $flags ) ) {
3145 $this->mRedirect
= false;
3146 return $this->mRedirect
;
3149 $linkCache = LinkCache
::singleton();
3150 $cached = $linkCache->getGoodLinkFieldObj( $this, 'redirect' );
3151 if ( $cached === null ) {
3152 # Trust LinkCache's state over our own
3153 # LinkCache is telling us that the page doesn't exist, despite there being cached
3154 # data relating to an existing page in $this->mArticleID. Updaters should clear
3155 # LinkCache as appropriate, or use $flags = Title::GAID_FOR_UPDATE. If that flag is
3156 # set, then LinkCache will definitely be up to date here, since getArticleID() forces
3157 # LinkCache to refresh its data from the master.
3158 $this->mRedirect
= false;
3159 return $this->mRedirect
;
3162 $this->mRedirect
= (bool)$cached;
3164 return $this->mRedirect
;
3168 * What is the length of this page?
3169 * Uses link cache, adding it if necessary
3171 * @param int $flags A bit field; may be Title::GAID_FOR_UPDATE to select for update
3174 public function getLength( $flags = 0 ) {
3175 if ( $this->mLength
!= -1 ) {
3176 return $this->mLength
;
3178 # Calling getArticleID() loads the field from cache as needed
3179 if ( !$this->getArticleID( $flags ) ) {
3181 return $this->mLength
;
3183 $linkCache = LinkCache
::singleton();
3184 $cached = $linkCache->getGoodLinkFieldObj( $this, 'length' );
3185 if ( $cached === null ) {
3186 # Trust LinkCache's state over our own, as for isRedirect()
3188 return $this->mLength
;
3191 $this->mLength
= intval( $cached );
3193 return $this->mLength
;
3197 * What is the page_latest field for this page?
3199 * @param int $flags A bit field; may be Title::GAID_FOR_UPDATE to select for update
3200 * @return int Int or 0 if the page doesn't exist
3202 public function getLatestRevID( $flags = 0 ) {
3203 if ( !( $flags & Title
::GAID_FOR_UPDATE
) && $this->mLatestID
!== false ) {
3204 return intval( $this->mLatestID
);
3206 # Calling getArticleID() loads the field from cache as needed
3207 if ( !$this->getArticleID( $flags ) ) {
3208 $this->mLatestID
= 0;
3209 return $this->mLatestID
;
3211 $linkCache = LinkCache
::singleton();
3212 $linkCache->addLinkObj( $this );
3213 $cached = $linkCache->getGoodLinkFieldObj( $this, 'revision' );
3214 if ( $cached === null ) {
3215 # Trust LinkCache's state over our own, as for isRedirect()
3216 $this->mLatestID
= 0;
3217 return $this->mLatestID
;
3220 $this->mLatestID
= intval( $cached );
3222 return $this->mLatestID
;
3226 * This clears some fields in this object, and clears any associated
3227 * keys in the "bad links" section of the link cache.
3229 * - This is called from WikiPage::doEdit() and WikiPage::insertOn() to allow
3230 * loading of the new page_id. It's also called from
3231 * WikiPage::doDeleteArticleReal()
3233 * @param int $newid The new Article ID
3235 public function resetArticleID( $newid ) {
3236 $linkCache = LinkCache
::singleton();
3237 $linkCache->clearLink( $this );
3239 if ( $newid === false ) {
3240 $this->mArticleID
= -1;
3242 $this->mArticleID
= intval( $newid );
3244 $this->mRestrictionsLoaded
= false;
3245 $this->mRestrictions
= array();
3246 $this->mRedirect
= null;
3247 $this->mLength
= -1;
3248 $this->mLatestID
= false;
3249 $this->mContentModel
= false;
3250 $this->mEstimateRevisions
= null;
3251 $this->mPageLanguage
= false;
3252 $this->mDbPageLanguage
= null;
3256 * Capitalize a text string for a title if it belongs to a namespace that capitalizes
3258 * @param string $text Containing title to capitalize
3259 * @param int $ns Namespace index, defaults to NS_MAIN
3260 * @return string Containing capitalized title
3262 public static function capitalize( $text, $ns = NS_MAIN
) {
3265 if ( MWNamespace
::isCapitalized( $ns ) ) {
3266 return $wgContLang->ucfirst( $text );
3273 * Secure and split - main initialisation function for this object
3275 * Assumes that mDbkeyform has been set, and is urldecoded
3276 * and uses underscores, but not otherwise munged. This function
3277 * removes illegal characters, splits off the interwiki and
3278 * namespace prefixes, sets the other forms, and canonicalizes
3281 * @return bool True on success
3283 private function secureAndSplit() {
3285 $this->mInterwiki
= '';
3286 $this->mFragment
= '';
3287 $this->mNamespace
= $this->mDefaultNamespace
; # Usually NS_MAIN
3289 $dbkey = $this->mDbkeyform
;
3292 // @note: splitTitleString() is a temporary hack to allow MediaWikiTitleCodec to share
3293 // the parsing code with Title, while avoiding massive refactoring.
3294 // @todo: get rid of secureAndSplit, refactor parsing code.
3295 $parser = self
::getTitleParser();
3296 $parts = $parser->splitTitleString( $dbkey, $this->getDefaultNamespace() );
3297 } catch ( MalformedTitleException
$ex ) {
3302 $this->setFragment( '#' . $parts['fragment'] );
3303 $this->mInterwiki
= $parts['interwiki'];
3304 $this->mLocalInterwiki
= $parts['local_interwiki'];
3305 $this->mNamespace
= $parts['namespace'];
3306 $this->mUserCaseDBKey
= $parts['user_case_dbkey'];
3308 $this->mDbkeyform
= $parts['dbkey'];
3309 $this->mUrlform
= wfUrlencode( $this->mDbkeyform
);
3310 $this->mTextform
= str_replace( '_', ' ', $this->mDbkeyform
);
3312 # We already know that some pages won't be in the database!
3313 if ( $this->isExternal() ||
$this->mNamespace
== NS_SPECIAL
) {
3314 $this->mArticleID
= 0;
3321 * Get an array of Title objects linking to this Title
3322 * Also stores the IDs in the link cache.
3324 * WARNING: do not use this function on arbitrary user-supplied titles!
3325 * On heavily-used templates it will max out the memory.
3327 * @param array $options May be FOR UPDATE
3328 * @param string $table Table name
3329 * @param string $prefix Fields prefix
3330 * @return Title[] Array of Title objects linking here
3332 public function getLinksTo( $options = array(), $table = 'pagelinks', $prefix = 'pl' ) {
3333 if ( count( $options ) > 0 ) {
3334 $db = wfGetDB( DB_MASTER
);
3336 $db = wfGetDB( DB_SLAVE
);
3340 array( 'page', $table ),
3341 self
::getSelectFields(),
3343 "{$prefix}_from=page_id",
3344 "{$prefix}_namespace" => $this->getNamespace(),
3345 "{$prefix}_title" => $this->getDBkey() ),
3351 if ( $res->numRows() ) {
3352 $linkCache = LinkCache
::singleton();
3353 foreach ( $res as $row ) {
3354 $titleObj = Title
::makeTitle( $row->page_namespace
, $row->page_title
);
3356 $linkCache->addGoodLinkObjFromRow( $titleObj, $row );
3357 $retVal[] = $titleObj;
3365 * Get an array of Title objects using this Title as a template
3366 * Also stores the IDs in the link cache.
3368 * WARNING: do not use this function on arbitrary user-supplied titles!
3369 * On heavily-used templates it will max out the memory.
3371 * @param array $options May be FOR UPDATE
3372 * @return Title[] Array of Title the Title objects linking here
3374 public function getTemplateLinksTo( $options = array() ) {
3375 return $this->getLinksTo( $options, 'templatelinks', 'tl' );
3379 * Get an array of Title objects linked from this Title
3380 * Also stores the IDs in the link cache.
3382 * WARNING: do not use this function on arbitrary user-supplied titles!
3383 * On heavily-used templates it will max out the memory.
3385 * @param array $options May be FOR UPDATE
3386 * @param string $table Table name
3387 * @param string $prefix Fields prefix
3388 * @return array Array of Title objects linking here
3390 public function getLinksFrom( $options = array(), $table = 'pagelinks', $prefix = 'pl' ) {
3391 global $wgContentHandlerUseDB;
3393 $id = $this->getArticleID();
3395 # If the page doesn't exist; there can't be any link from this page
3400 if ( count( $options ) > 0 ) {
3401 $db = wfGetDB( DB_MASTER
);
3403 $db = wfGetDB( DB_SLAVE
);
3406 $namespaceFiled = "{$prefix}_namespace";
3407 $titleField = "{$prefix}_title";
3418 if ( $wgContentHandlerUseDB ) {
3419 $fields[] = 'page_content_model';
3423 array( $table, 'page' ),
3425 array( "{$prefix}_from" => $id ),
3428 array( 'page' => array(
3430 array( "page_namespace=$namespaceFiled", "page_title=$titleField" )
3435 if ( $res->numRows() ) {
3436 $linkCache = LinkCache
::singleton();
3437 foreach ( $res as $row ) {
3438 $titleObj = Title
::makeTitle( $row->$namespaceFiled, $row->$titleField );
3440 if ( $row->page_id
) {
3441 $linkCache->addGoodLinkObjFromRow( $titleObj, $row );
3443 $linkCache->addBadLinkObj( $titleObj );
3445 $retVal[] = $titleObj;
3453 * Get an array of Title objects used on this Title as a template
3454 * Also stores the IDs in the link cache.
3456 * WARNING: do not use this function on arbitrary user-supplied titles!
3457 * On heavily-used templates it will max out the memory.
3459 * @param array $options May be FOR UPDATE
3460 * @return Title[] Array of Title the Title objects used here
3462 public function getTemplateLinksFrom( $options = array() ) {
3463 return $this->getLinksFrom( $options, 'templatelinks', 'tl' );
3467 * Get an array of Title objects referring to non-existent articles linked
3470 * @todo check if needed (used only in SpecialBrokenRedirects.php, and
3471 * should use redirect table in this case).
3472 * @return Title[] Array of Title the Title objects
3474 public function getBrokenLinksFrom() {
3475 if ( $this->getArticleID() == 0 ) {
3476 # All links from article ID 0 are false positives
3480 $dbr = wfGetDB( DB_SLAVE
);
3481 $res = $dbr->select(
3482 array( 'page', 'pagelinks' ),
3483 array( 'pl_namespace', 'pl_title' ),
3485 'pl_from' => $this->getArticleID(),
3486 'page_namespace IS NULL'
3488 __METHOD__
, array(),
3492 array( 'pl_namespace=page_namespace', 'pl_title=page_title' )
3498 foreach ( $res as $row ) {
3499 $retVal[] = Title
::makeTitle( $row->pl_namespace
, $row->pl_title
);
3505 * Get a list of URLs to purge from the Squid cache when this
3508 * @return string[] Array of String the URLs
3510 public function getSquidURLs() {
3512 $this->getInternalURL(),
3513 $this->getInternalURL( 'action=history' )
3516 $pageLang = $this->getPageLanguage();
3517 if ( $pageLang->hasVariants() ) {
3518 $variants = $pageLang->getVariants();
3519 foreach ( $variants as $vCode ) {
3520 $urls[] = $this->getInternalURL( '', $vCode );
3524 // If we are looking at a css/js user subpage, purge the action=raw.
3525 if ( $this->isJsSubpage() ) {
3526 $urls[] = $this->getInternalUrl( 'action=raw&ctype=text/javascript' );
3527 } elseif ( $this->isCssSubpage() ) {
3528 $urls[] = $this->getInternalUrl( 'action=raw&ctype=text/css' );
3531 wfRunHooks( 'TitleSquidURLs', array( $this, &$urls ) );
3536 * Purge all applicable Squid URLs
3538 public function purgeSquid() {
3540 if ( $wgUseSquid ) {
3541 $urls = $this->getSquidURLs();
3542 $u = new SquidUpdate( $urls );
3548 * Move this page without authentication
3550 * @param Title $nt The new page Title
3551 * @return array|bool True on success, getUserPermissionsErrors()-like array on failure
3553 public function moveNoAuth( &$nt ) {
3554 return $this->moveTo( $nt, false );
3558 * Check whether a given move operation would be valid.
3559 * Returns true if ok, or a getUserPermissionsErrors()-like array otherwise
3561 * @param Title $nt The new title
3562 * @param bool $auth Indicates whether $wgUser's permissions
3564 * @param string $reason Is the log summary of the move, used for spam checking
3565 * @return array|bool True on success, getUserPermissionsErrors()-like array on failure
3567 public function isValidMoveOperation( &$nt, $auth = true, $reason = '' ) {
3568 global $wgUser, $wgContentHandlerUseDB;
3572 // Normally we'd add this to $errors, but we'll get
3573 // lots of syntax errors if $nt is not an object
3574 return array( array( 'badtitletext' ) );
3576 if ( $this->equals( $nt ) ) {
3577 $errors[] = array( 'selfmove' );
3579 if ( !$this->isMovable() ) {
3580 $errors[] = array( 'immobile-source-namespace', $this->getNsText() );
3582 if ( $nt->isExternal() ) {
3583 $errors[] = array( 'immobile-target-namespace-iw' );
3585 if ( !$nt->isMovable() ) {
3586 $errors[] = array( 'immobile-target-namespace', $nt->getNsText() );
3589 $oldid = $this->getArticleID();
3590 $newid = $nt->getArticleID();
3592 if ( strlen( $nt->getDBkey() ) < 1 ) {
3593 $errors[] = array( 'articleexists' );
3596 ( $this->getDBkey() == '' ) ||
3598 ( $nt->getDBkey() == '' )
3600 $errors[] = array( 'badarticleerror' );
3603 // Content model checks
3604 if ( !$wgContentHandlerUseDB &&
3605 $this->getContentModel() !== $nt->getContentModel() ) {
3606 // can't move a page if that would change the page's content model
3609 ContentHandler
::getLocalizedName( $this->getContentModel() ),
3610 ContentHandler
::getLocalizedName( $nt->getContentModel() )
3614 // Image-specific checks
3615 if ( $this->getNamespace() == NS_FILE
) {
3616 $errors = array_merge( $errors, $this->validateFileMoveOperation( $nt ) );
3619 if ( $nt->getNamespace() == NS_FILE
&& $this->getNamespace() != NS_FILE
) {
3620 $errors[] = array( 'nonfile-cannot-move-to-file' );
3624 $errors = wfMergeErrorArrays( $errors,
3625 $this->getUserPermissionsErrors( 'move', $wgUser ),
3626 $this->getUserPermissionsErrors( 'edit', $wgUser ),
3627 $nt->getUserPermissionsErrors( 'move-target', $wgUser ),
3628 $nt->getUserPermissionsErrors( 'edit', $wgUser ) );
3631 $match = EditPage
::matchSummarySpamRegex( $reason );
3632 if ( $match !== false ) {
3633 // This is kind of lame, won't display nice
3634 $errors[] = array( 'spamprotectiontext' );
3638 if ( !wfRunHooks( 'AbortMove', array( $this, $nt, $wgUser, &$err, $reason ) ) ) {
3639 $errors[] = array( 'hookaborted', $err );
3642 # The move is allowed only if (1) the target doesn't exist, or
3643 # (2) the target is a redirect to the source, and has no history
3644 # (so we can undo bad moves right after they're done).
3646 if ( 0 != $newid ) { # Target exists; check for validity
3647 if ( !$this->isValidMoveTarget( $nt ) ) {
3648 $errors[] = array( 'articleexists' );
3651 $tp = $nt->getTitleProtection();
3652 $right = $tp['pt_create_perm'];
3653 if ( $right == 'sysop' ) {
3654 $right = 'editprotected'; // B/C
3656 if ( $right == 'autoconfirmed' ) {
3657 $right = 'editsemiprotected'; // B/C
3659 if ( $tp and !$wgUser->isAllowed( $right ) ) {
3660 $errors[] = array( 'cantmove-titleprotected' );
3663 if ( empty( $errors ) ) {
3670 * Check if the requested move target is a valid file move target
3671 * @param Title $nt Target title
3672 * @return array List of errors
3674 protected function validateFileMoveOperation( $nt ) {
3679 // wfFindFile( $nt ) / wfLocalFile( $nt ) is not allowed until below
3681 $file = wfLocalFile( $this );
3682 if ( $file->exists() ) {
3683 if ( $nt->getText() != wfStripIllegalFilenameChars( $nt->getText() ) ) {
3684 $errors[] = array( 'imageinvalidfilename' );
3686 if ( !File
::checkExtensionCompatibility( $file, $nt->getDBkey() ) ) {
3687 $errors[] = array( 'imagetypemismatch' );
3691 if ( $nt->getNamespace() != NS_FILE
) {
3692 $errors[] = array( 'imagenocrossnamespace' );
3693 // From here we want to do checks on a file object, so if we can't
3694 // create one, we must return.
3698 // wfFindFile( $nt ) / wfLocalFile( $nt ) is allowed below here
3700 $destFile = wfLocalFile( $nt );
3701 if ( !$wgUser->isAllowed( 'reupload-shared' ) && !$destFile->exists() && wfFindFile( $nt ) ) {
3702 $errors[] = array( 'file-exists-sharedrepo' );
3709 * Move a title to a new location
3711 * @param Title $nt The new title
3712 * @param bool $auth Indicates whether $wgUser's permissions
3714 * @param string $reason The reason for the move
3715 * @param bool $createRedirect Whether to create a redirect from the old title to the new title.
3716 * Ignored if the user doesn't have the suppressredirect right.
3717 * @return array|bool True on success, getUserPermissionsErrors()-like array on failure
3719 public function moveTo( &$nt, $auth = true, $reason = '', $createRedirect = true ) {
3721 $err = $this->isValidMoveOperation( $nt, $auth, $reason );
3722 if ( is_array( $err ) ) {
3723 // Auto-block user's IP if the account was "hard" blocked
3724 $wgUser->spreadAnyEditBlock();
3727 // Check suppressredirect permission
3728 if ( $auth && !$wgUser->isAllowed( 'suppressredirect' ) ) {
3729 $createRedirect = true;
3732 wfRunHooks( 'TitleMove', array( $this, $nt, $wgUser ) );
3734 // If it is a file, move it first.
3735 // It is done before all other moving stuff is done because it's hard to revert.
3736 $dbw = wfGetDB( DB_MASTER
);
3737 if ( $this->getNamespace() == NS_FILE
) {
3738 $file = wfLocalFile( $this );
3739 if ( $file->exists() ) {
3740 $status = $file->move( $nt );
3741 if ( !$status->isOk() ) {
3742 return $status->getErrorsArray();
3745 // Clear RepoGroup process cache
3746 RepoGroup
::singleton()->clearCache( $this );
3747 RepoGroup
::singleton()->clearCache( $nt ); # clear false negative cache
3750 $dbw->begin( __METHOD__
); # If $file was a LocalFile, its transaction would have closed our own.
3751 $pageid = $this->getArticleID( self
::GAID_FOR_UPDATE
);
3752 $protected = $this->isProtected();
3754 // Do the actual move
3755 $this->moveToInternal( $nt, $reason, $createRedirect );
3757 // Refresh the sortkey for this row. Be careful to avoid resetting
3758 // cl_timestamp, which may disturb time-based lists on some sites.
3759 $prefixes = $dbw->select(
3761 array( 'cl_sortkey_prefix', 'cl_to' ),
3762 array( 'cl_from' => $pageid ),
3765 foreach ( $prefixes as $prefixRow ) {
3766 $prefix = $prefixRow->cl_sortkey_prefix
;
3767 $catTo = $prefixRow->cl_to
;
3768 $dbw->update( 'categorylinks',
3770 'cl_sortkey' => Collation
::singleton()->getSortKey(
3771 $nt->getCategorySortkey( $prefix ) ),
3772 'cl_timestamp=cl_timestamp' ),
3774 'cl_from' => $pageid,
3775 'cl_to' => $catTo ),
3780 $redirid = $this->getArticleID();
3783 # Protect the redirect title as the title used to be...
3784 $dbw->insertSelect( 'page_restrictions', 'page_restrictions',
3786 'pr_page' => $redirid,
3787 'pr_type' => 'pr_type',
3788 'pr_level' => 'pr_level',
3789 'pr_cascade' => 'pr_cascade',
3790 'pr_user' => 'pr_user',
3791 'pr_expiry' => 'pr_expiry'
3793 array( 'pr_page' => $pageid ),
3797 # Update the protection log
3798 $log = new LogPage( 'protect' );
3799 $comment = wfMessage(
3801 $this->getPrefixedText(),
3802 $nt->getPrefixedText()
3803 )->inContentLanguage()->text();
3805 $comment .= wfMessage( 'colon-separator' )->inContentLanguage()->text() . $reason;
3807 // @todo FIXME: $params?
3808 $logId = $log->addEntry(
3812 array( $this->getPrefixedText() ),
3816 // reread inserted pr_ids for log relation
3817 $insertedPrIds = $dbw->select(
3818 'page_restrictions',
3820 array( 'pr_page' => $redirid ),
3823 $logRelationsValues = array();
3824 foreach ( $insertedPrIds as $prid ) {
3825 $logRelationsValues[] = $prid->pr_id
;
3827 $log->addRelations( 'pr_id', $logRelationsValues, $logId );
3830 // Update *_from_namespace fields as needed
3831 if ( $this->getNamespace() != $nt->getNamespace() ) {
3832 $dbw->update( 'pagelinks',
3833 array( 'pl_from_namespace' => $nt->getNamespace() ),
3834 array( 'pl_from' => $pageid ),
3837 $dbw->update( 'templatelinks',
3838 array( 'tl_from_namespace' => $nt->getNamespace() ),
3839 array( 'tl_from' => $pageid ),
3842 $dbw->update( 'imagelinks',
3843 array( 'il_from_namespace' => $nt->getNamespace() ),
3844 array( 'il_from' => $pageid ),
3850 $oldtitle = $this->getDBkey();
3851 $newtitle = $nt->getDBkey();
3852 $oldsnamespace = MWNamespace
::getSubject( $this->getNamespace() );
3853 $newsnamespace = MWNamespace
::getSubject( $nt->getNamespace() );
3854 if ( $oldsnamespace != $newsnamespace ||
$oldtitle != $newtitle ) {
3855 WatchedItem
::duplicateEntries( $this, $nt );
3858 $dbw->commit( __METHOD__
);
3860 wfRunHooks( 'TitleMoveComplete', array( &$this, &$nt, &$wgUser, $pageid, $redirid, $reason ) );
3865 * Move page to a title which is either a redirect to the
3866 * source page or nonexistent
3868 * @param Title $nt The page to move to, which should be a redirect or nonexistent
3869 * @param string $reason The reason for the move
3870 * @param bool $createRedirect Whether to leave a redirect at the old title. Does not check
3871 * if the user has the suppressredirect right
3872 * @throws MWException
3874 private function moveToInternal( &$nt, $reason = '', $createRedirect = true ) {
3875 global $wgUser, $wgContLang;
3877 if ( $nt->exists() ) {
3878 $moveOverRedirect = true;
3879 $logType = 'move_redir';
3881 $moveOverRedirect = false;
3885 if ( $createRedirect ) {
3886 if ( $this->getNamespace() == NS_CATEGORY
3887 && !wfMessage( 'category-move-redirect-override' )->inContentLanguage()->isDisabled()
3889 $redirectContent = new WikitextContent(
3890 wfMessage( 'category-move-redirect-override' )
3891 ->params( $nt->getPrefixedText() )->inContentLanguage()->plain() );
3893 $contentHandler = ContentHandler
::getForTitle( $this );
3894 $redirectContent = $contentHandler->makeRedirectContent( $nt,
3895 wfMessage( 'move-redirect-text' )->inContentLanguage()->plain() );
3898 // NOTE: If this page's content model does not support redirects, $redirectContent will be null.
3900 $redirectContent = null;
3903 $logEntry = new ManualLogEntry( 'move', $logType );
3904 $logEntry->setPerformer( $wgUser );
3905 $logEntry->setTarget( $this );
3906 $logEntry->setComment( $reason );
3907 $logEntry->setParameters( array(
3908 '4::target' => $nt->getPrefixedText(),
3909 '5::noredir' => $redirectContent ?
'0': '1',
3912 $formatter = LogFormatter
::newFromEntry( $logEntry );
3913 $formatter->setContext( RequestContext
::newExtraneousContext( $this ) );
3914 $comment = $formatter->getPlainActionText();
3916 $comment .= wfMessage( 'colon-separator' )->inContentLanguage()->text() . $reason;
3918 # Truncate for whole multibyte characters.
3919 $comment = $wgContLang->truncate( $comment, 255 );
3921 $oldid = $this->getArticleID();
3923 $dbw = wfGetDB( DB_MASTER
);
3925 $newpage = WikiPage
::factory( $nt );
3927 if ( $moveOverRedirect ) {
3928 $newid = $nt->getArticleID();
3929 $newcontent = $newpage->getContent();
3931 # Delete the old redirect. We don't save it to history since
3932 # by definition if we've got here it's rather uninteresting.
3933 # We have to remove it so that the next step doesn't trigger
3934 # a conflict on the unique namespace+title index...
3935 $dbw->delete( 'page', array( 'page_id' => $newid ), __METHOD__
);
3937 $newpage->doDeleteUpdates( $newid, $newcontent );
3940 # Save a null revision in the page's history notifying of the move
3941 $nullRevision = Revision
::newNullRevision( $dbw, $oldid, $comment, true, $wgUser );
3942 if ( !is_object( $nullRevision ) ) {
3943 throw new MWException( 'No valid null revision produced in ' . __METHOD__
);
3946 $nullRevision->insertOn( $dbw );
3948 # Change the name of the target page:
3949 $dbw->update( 'page',
3951 'page_namespace' => $nt->getNamespace(),
3952 'page_title' => $nt->getDBkey(),
3954 /* WHERE */ array( 'page_id' => $oldid ),
3958 // clean up the old title before reset article id - bug 45348
3959 if ( !$redirectContent ) {
3960 WikiPage
::onArticleDelete( $this );
3963 $this->resetArticleID( 0 ); // 0 == non existing
3964 $nt->resetArticleID( $oldid );
3965 $newpage->loadPageData( WikiPage
::READ_LOCKING
); // bug 46397
3967 $newpage->updateRevisionOn( $dbw, $nullRevision );
3969 wfRunHooks( 'NewRevisionFromEditComplete',
3970 array( $newpage, $nullRevision, $nullRevision->getParentId(), $wgUser ) );
3972 $newpage->doEditUpdates( $nullRevision, $wgUser, array( 'changed' => false ) );
3974 if ( !$moveOverRedirect ) {
3975 WikiPage
::onArticleCreate( $nt );
3978 # Recreate the redirect, this time in the other direction.
3979 if ( $redirectContent ) {
3980 $redirectArticle = WikiPage
::factory( $this );
3981 $redirectArticle->loadFromRow( false, WikiPage
::READ_LOCKING
); // bug 46397
3982 $newid = $redirectArticle->insertOn( $dbw );
3983 if ( $newid ) { // sanity
3984 $this->resetArticleID( $newid );
3985 $redirectRevision = new Revision( array(
3986 'title' => $this, // for determining the default content model
3988 'user_text' => $wgUser->getName(),
3989 'user' => $wgUser->getId(),
3990 'comment' => $comment,
3991 'content' => $redirectContent ) );
3992 $redirectRevision->insertOn( $dbw );
3993 $redirectArticle->updateRevisionOn( $dbw, $redirectRevision, 0 );
3995 wfRunHooks( 'NewRevisionFromEditComplete',
3996 array( $redirectArticle, $redirectRevision, false, $wgUser ) );
3998 $redirectArticle->doEditUpdates( $redirectRevision, $wgUser, array( 'created' => true ) );
4003 $logid = $logEntry->insert();
4004 $logEntry->publish( $logid );
4008 * Move this page's subpages to be subpages of $nt
4010 * @param Title $nt Move target
4011 * @param bool $auth Whether $wgUser's permissions should be checked
4012 * @param string $reason The reason for the move
4013 * @param bool $createRedirect Whether to create redirects from the old subpages to
4014 * the new ones Ignored if the user doesn't have the 'suppressredirect' right
4015 * @return array Array with old page titles as keys, and strings (new page titles) or
4016 * arrays (errors) as values, or an error array with numeric indices if no pages
4019 public function moveSubpages( $nt, $auth = true, $reason = '', $createRedirect = true ) {
4020 global $wgMaximumMovedPages;
4021 // Check permissions
4022 if ( !$this->userCan( 'move-subpages' ) ) {
4023 return array( 'cant-move-subpages' );
4025 // Do the source and target namespaces support subpages?
4026 if ( !MWNamespace
::hasSubpages( $this->getNamespace() ) ) {
4027 return array( 'namespace-nosubpages',
4028 MWNamespace
::getCanonicalName( $this->getNamespace() ) );
4030 if ( !MWNamespace
::hasSubpages( $nt->getNamespace() ) ) {
4031 return array( 'namespace-nosubpages',
4032 MWNamespace
::getCanonicalName( $nt->getNamespace() ) );
4035 $subpages = $this->getSubpages( $wgMaximumMovedPages +
1 );
4038 foreach ( $subpages as $oldSubpage ) {
4040 if ( $count > $wgMaximumMovedPages ) {
4041 $retval[$oldSubpage->getPrefixedText()] =
4042 array( 'movepage-max-pages',
4043 $wgMaximumMovedPages );
4047 // We don't know whether this function was called before
4048 // or after moving the root page, so check both
4050 if ( $oldSubpage->getArticleID() == $this->getArticleID()
4051 ||
$oldSubpage->getArticleID() == $nt->getArticleID()
4053 // When moving a page to a subpage of itself,
4054 // don't move it twice
4057 $newPageName = preg_replace(
4058 '#^' . preg_quote( $this->getDBkey(), '#' ) . '#',
4059 StringUtils
::escapeRegexReplacement( $nt->getDBkey() ), # bug 21234
4060 $oldSubpage->getDBkey() );
4061 if ( $oldSubpage->isTalkPage() ) {
4062 $newNs = $nt->getTalkPage()->getNamespace();
4064 $newNs = $nt->getSubjectPage()->getNamespace();
4066 # Bug 14385: we need makeTitleSafe because the new page names may
4067 # be longer than 255 characters.
4068 $newSubpage = Title
::makeTitleSafe( $newNs, $newPageName );
4070 $success = $oldSubpage->moveTo( $newSubpage, $auth, $reason, $createRedirect );
4071 if ( $success === true ) {
4072 $retval[$oldSubpage->getPrefixedText()] = $newSubpage->getPrefixedText();
4074 $retval[$oldSubpage->getPrefixedText()] = $success;
4081 * Checks if this page is just a one-rev redirect.
4082 * Adds lock, so don't use just for light purposes.
4086 public function isSingleRevRedirect() {
4087 global $wgContentHandlerUseDB;
4089 $dbw = wfGetDB( DB_MASTER
);
4092 $fields = array( 'page_is_redirect', 'page_latest', 'page_id' );
4093 if ( $wgContentHandlerUseDB ) {
4094 $fields[] = 'page_content_model';
4097 $row = $dbw->selectRow( 'page',
4101 array( 'FOR UPDATE' )
4103 # Cache some fields we may want
4104 $this->mArticleID
= $row ?
intval( $row->page_id
) : 0;
4105 $this->mRedirect
= $row ?
(bool)$row->page_is_redirect
: false;
4106 $this->mLatestID
= $row ?
intval( $row->page_latest
) : false;
4107 $this->mContentModel
= $row && isset( $row->page_content_model
)
4108 ?
strval( $row->page_content_model
)
4111 if ( !$this->mRedirect
) {
4114 # Does the article have a history?
4115 $row = $dbw->selectField( array( 'page', 'revision' ),
4117 array( 'page_namespace' => $this->getNamespace(),
4118 'page_title' => $this->getDBkey(),
4120 'page_latest != rev_id'
4123 array( 'FOR UPDATE' )
4125 # Return true if there was no history
4126 return ( $row === false );
4130 * Checks if $this can be moved to a given Title
4131 * - Selects for update, so don't call it unless you mean business
4133 * @param Title $nt The new title to check
4136 public function isValidMoveTarget( $nt ) {
4137 # Is it an existing file?
4138 if ( $nt->getNamespace() == NS_FILE
) {
4139 $file = wfLocalFile( $nt );
4140 if ( $file->exists() ) {
4141 wfDebug( __METHOD__
. ": file exists\n" );
4145 # Is it a redirect with no history?
4146 if ( !$nt->isSingleRevRedirect() ) {
4147 wfDebug( __METHOD__
. ": not a one-rev redirect\n" );
4150 # Get the article text
4151 $rev = Revision
::newFromTitle( $nt, false, Revision
::READ_LATEST
);
4152 if ( !is_object( $rev ) ) {
4155 $content = $rev->getContent();
4156 # Does the redirect point to the source?
4157 # Or is it a broken self-redirect, usually caused by namespace collisions?
4158 $redirTitle = $content ?
$content->getRedirectTarget() : null;
4160 if ( $redirTitle ) {
4161 if ( $redirTitle->getPrefixedDBkey() != $this->getPrefixedDBkey() &&
4162 $redirTitle->getPrefixedDBkey() != $nt->getPrefixedDBkey() ) {
4163 wfDebug( __METHOD__
. ": redirect points to other page\n" );
4169 # Fail safe (not a redirect after all. strange.)
4170 wfDebug( __METHOD__
. ": failsafe: database sais " . $nt->getPrefixedDBkey() .
4171 " is a redirect, but it doesn't contain a valid redirect.\n" );
4177 * Get categories to which this Title belongs and return an array of
4178 * categories' names.
4180 * @return array Array of parents in the form:
4181 * $parent => $currentarticle
4183 public function getParentCategories() {
4188 $titleKey = $this->getArticleID();
4190 if ( $titleKey === 0 ) {
4194 $dbr = wfGetDB( DB_SLAVE
);
4196 $res = $dbr->select(
4199 array( 'cl_from' => $titleKey ),
4203 if ( $res->numRows() > 0 ) {
4204 foreach ( $res as $row ) {
4205 // $data[] = Title::newFromText($wgContLang->getNsText ( NS_CATEGORY ).':'.$row->cl_to);
4206 $data[$wgContLang->getNsText( NS_CATEGORY
) . ':' . $row->cl_to
] = $this->getFullText();
4213 * Get a tree of parent categories
4215 * @param array $children Array with the children in the keys, to check for circular refs
4216 * @return array Tree of parent categories
4218 public function getParentCategoryTree( $children = array() ) {
4220 $parents = $this->getParentCategories();
4223 foreach ( $parents as $parent => $current ) {
4224 if ( array_key_exists( $parent, $children ) ) {
4225 # Circular reference
4226 $stack[$parent] = array();
4228 $nt = Title
::newFromText( $parent );
4230 $stack[$parent] = $nt->getParentCategoryTree( $children +
array( $parent => 1 ) );
4240 * Get an associative array for selecting this title from
4243 * @return array Array suitable for the $where parameter of DB::select()
4245 public function pageCond() {
4246 if ( $this->mArticleID
> 0 ) {
4247 // PK avoids secondary lookups in InnoDB, shouldn't hurt other DBs
4248 return array( 'page_id' => $this->mArticleID
);
4250 return array( 'page_namespace' => $this->mNamespace
, 'page_title' => $this->mDbkeyform
);
4255 * Get the revision ID of the previous revision
4257 * @param int $revId Revision ID. Get the revision that was before this one.
4258 * @param int $flags Title::GAID_FOR_UPDATE
4259 * @return int|bool Old revision ID, or false if none exists
4261 public function getPreviousRevisionID( $revId, $flags = 0 ) {
4262 $db = ( $flags & self
::GAID_FOR_UPDATE
) ?
wfGetDB( DB_MASTER
) : wfGetDB( DB_SLAVE
);
4263 $revId = $db->selectField( 'revision', 'rev_id',
4265 'rev_page' => $this->getArticleID( $flags ),
4266 'rev_id < ' . intval( $revId )
4269 array( 'ORDER BY' => 'rev_id DESC' )
4272 if ( $revId === false ) {
4275 return intval( $revId );
4280 * Get the revision ID of the next revision
4282 * @param int $revId Revision ID. Get the revision that was after this one.
4283 * @param int $flags Title::GAID_FOR_UPDATE
4284 * @return int|bool Next revision ID, or false if none exists
4286 public function getNextRevisionID( $revId, $flags = 0 ) {
4287 $db = ( $flags & self
::GAID_FOR_UPDATE
) ?
wfGetDB( DB_MASTER
) : wfGetDB( DB_SLAVE
);
4288 $revId = $db->selectField( 'revision', 'rev_id',
4290 'rev_page' => $this->getArticleID( $flags ),
4291 'rev_id > ' . intval( $revId )
4294 array( 'ORDER BY' => 'rev_id' )
4297 if ( $revId === false ) {
4300 return intval( $revId );
4305 * Get the first revision of the page
4307 * @param int $flags Title::GAID_FOR_UPDATE
4308 * @return Revision|null If page doesn't exist
4310 public function getFirstRevision( $flags = 0 ) {
4311 $pageId = $this->getArticleID( $flags );
4313 $db = ( $flags & self
::GAID_FOR_UPDATE
) ?
wfGetDB( DB_MASTER
) : wfGetDB( DB_SLAVE
);
4314 $row = $db->selectRow( 'revision', Revision
::selectFields(),
4315 array( 'rev_page' => $pageId ),
4317 array( 'ORDER BY' => 'rev_timestamp ASC', 'LIMIT' => 1 )
4320 return new Revision( $row );
4327 * Get the oldest revision timestamp of this page
4329 * @param int $flags Title::GAID_FOR_UPDATE
4330 * @return string MW timestamp
4332 public function getEarliestRevTime( $flags = 0 ) {
4333 $rev = $this->getFirstRevision( $flags );
4334 return $rev ?
$rev->getTimestamp() : null;
4338 * Check if this is a new page
4342 public function isNewPage() {
4343 $dbr = wfGetDB( DB_SLAVE
);
4344 return (bool)$dbr->selectField( 'page', 'page_is_new', $this->pageCond(), __METHOD__
);
4348 * Check whether the number of revisions of this page surpasses $wgDeleteRevisionsLimit
4352 public function isBigDeletion() {
4353 global $wgDeleteRevisionsLimit;
4355 if ( !$wgDeleteRevisionsLimit ) {
4359 $revCount = $this->estimateRevisionCount();
4360 return $revCount > $wgDeleteRevisionsLimit;
4364 * Get the approximate revision count of this page.
4368 public function estimateRevisionCount() {
4369 if ( !$this->exists() ) {
4373 if ( $this->mEstimateRevisions
=== null ) {
4374 $dbr = wfGetDB( DB_SLAVE
);
4375 $this->mEstimateRevisions
= $dbr->estimateRowCount( 'revision', '*',
4376 array( 'rev_page' => $this->getArticleID() ), __METHOD__
);
4379 return $this->mEstimateRevisions
;
4383 * Get the number of revisions between the given revision.
4384 * Used for diffs and other things that really need it.
4386 * @param int|Revision $old Old revision or rev ID (first before range)
4387 * @param int|Revision $new New revision or rev ID (first after range)
4388 * @param int|null $max Limit of Revisions to count, will be incremented to detect truncations
4389 * @return int Number of revisions between these revisions.
4391 public function countRevisionsBetween( $old, $new, $max = null ) {
4392 if ( !( $old instanceof Revision
) ) {
4393 $old = Revision
::newFromTitle( $this, (int)$old );
4395 if ( !( $new instanceof Revision
) ) {
4396 $new = Revision
::newFromTitle( $this, (int)$new );
4398 if ( !$old ||
!$new ) {
4399 return 0; // nothing to compare
4401 $dbr = wfGetDB( DB_SLAVE
);
4403 'rev_page' => $this->getArticleID(),
4404 'rev_timestamp > ' . $dbr->addQuotes( $dbr->timestamp( $old->getTimestamp() ) ),
4405 'rev_timestamp < ' . $dbr->addQuotes( $dbr->timestamp( $new->getTimestamp() ) )
4407 if ( $max !== null ) {
4408 $res = $dbr->select( 'revision', '1',
4411 array( 'LIMIT' => $max +
1 ) // extra to detect truncation
4413 return $res->numRows();
4415 return (int)$dbr->selectField( 'revision', 'count(*)', $conds, __METHOD__
);
4420 * Get the authors between the given revisions or revision IDs.
4421 * Used for diffs and other things that really need it.
4425 * @param int|Revision $old Old revision or rev ID (first before range by default)
4426 * @param int|Revision $new New revision or rev ID (first after range by default)
4427 * @param int $limit Maximum number of authors
4428 * @param string|array $options (Optional): Single option, or an array of options:
4429 * 'include_old' Include $old in the range; $new is excluded.
4430 * 'include_new' Include $new in the range; $old is excluded.
4431 * 'include_both' Include both $old and $new in the range.
4432 * Unknown option values are ignored.
4433 * @return array|null Names of revision authors in the range; null if not both revisions exist
4435 public function getAuthorsBetween( $old, $new, $limit, $options = array() ) {
4436 if ( !( $old instanceof Revision
) ) {
4437 $old = Revision
::newFromTitle( $this, (int)$old );
4439 if ( !( $new instanceof Revision
) ) {
4440 $new = Revision
::newFromTitle( $this, (int)$new );
4442 // XXX: what if Revision objects are passed in, but they don't refer to this title?
4443 // Add $old->getPage() != $new->getPage() || $old->getPage() != $this->getArticleID()
4444 // in the sanity check below?
4445 if ( !$old ||
!$new ) {
4446 return null; // nothing to compare
4451 $options = (array)$options;
4452 if ( in_array( 'include_old', $options ) ) {
4455 if ( in_array( 'include_new', $options ) ) {
4458 if ( in_array( 'include_both', $options ) ) {
4462 // No DB query needed if $old and $new are the same or successive revisions:
4463 if ( $old->getId() === $new->getId() ) {
4464 return ( $old_cmp === '>' && $new_cmp === '<' ) ?
array() : array( $old->getRawUserText() );
4465 } elseif ( $old->getId() === $new->getParentId() ) {
4466 if ( $old_cmp === '>=' && $new_cmp === '<=' ) {
4467 $authors[] = $old->getRawUserText();
4468 if ( $old->getRawUserText() != $new->getRawUserText() ) {
4469 $authors[] = $new->getRawUserText();
4471 } elseif ( $old_cmp === '>=' ) {
4472 $authors[] = $old->getRawUserText();
4473 } elseif ( $new_cmp === '<=' ) {
4474 $authors[] = $new->getRawUserText();
4478 $dbr = wfGetDB( DB_SLAVE
);
4479 $res = $dbr->select( 'revision', 'DISTINCT rev_user_text',
4481 'rev_page' => $this->getArticleID(),
4482 "rev_timestamp $old_cmp " . $dbr->addQuotes( $dbr->timestamp( $old->getTimestamp() ) ),
4483 "rev_timestamp $new_cmp " . $dbr->addQuotes( $dbr->timestamp( $new->getTimestamp() ) )
4485 array( 'LIMIT' => $limit +
1 ) // add one so caller knows it was truncated
4487 foreach ( $res as $row ) {
4488 $authors[] = $row->rev_user_text
;
4494 * Get the number of authors between the given revisions or revision IDs.
4495 * Used for diffs and other things that really need it.
4497 * @param int|Revision $old Old revision or rev ID (first before range by default)
4498 * @param int|Revision $new New revision or rev ID (first after range by default)
4499 * @param int $limit Maximum number of authors
4500 * @param string|array $options (Optional): Single option, or an array of options:
4501 * 'include_old' Include $old in the range; $new is excluded.
4502 * 'include_new' Include $new in the range; $old is excluded.
4503 * 'include_both' Include both $old and $new in the range.
4504 * Unknown option values are ignored.
4505 * @return int Number of revision authors in the range; zero if not both revisions exist
4507 public function countAuthorsBetween( $old, $new, $limit, $options = array() ) {
4508 $authors = $this->getAuthorsBetween( $old, $new, $limit, $options );
4509 return $authors ?
count( $authors ) : 0;
4513 * Compare with another title.
4515 * @param Title $title
4518 public function equals( Title
$title ) {
4519 // Note: === is necessary for proper matching of number-like titles.
4520 return $this->getInterwiki() === $title->getInterwiki()
4521 && $this->getNamespace() == $title->getNamespace()
4522 && $this->getDBkey() === $title->getDBkey();
4526 * Check if this title is a subpage of another title
4528 * @param Title $title
4531 public function isSubpageOf( Title
$title ) {
4532 return $this->getInterwiki() === $title->getInterwiki()
4533 && $this->getNamespace() == $title->getNamespace()
4534 && strpos( $this->getDBkey(), $title->getDBkey() . '/' ) === 0;
4538 * Check if page exists. For historical reasons, this function simply
4539 * checks for the existence of the title in the page table, and will
4540 * thus return false for interwiki links, special pages and the like.
4541 * If you want to know if a title can be meaningfully viewed, you should
4542 * probably call the isKnown() method instead.
4546 public function exists() {
4547 return $this->getArticleID() != 0;
4551 * Should links to this title be shown as potentially viewable (i.e. as
4552 * "bluelinks"), even if there's no record by this title in the page
4555 * This function is semi-deprecated for public use, as well as somewhat
4556 * misleadingly named. You probably just want to call isKnown(), which
4557 * calls this function internally.
4559 * (ISSUE: Most of these checks are cheap, but the file existence check
4560 * can potentially be quite expensive. Including it here fixes a lot of
4561 * existing code, but we might want to add an optional parameter to skip
4562 * it and any other expensive checks.)
4566 public function isAlwaysKnown() {
4570 * Allows overriding default behavior for determining if a page exists.
4571 * If $isKnown is kept as null, regular checks happen. If it's
4572 * a boolean, this value is returned by the isKnown method.
4576 * @param Title $title
4577 * @param bool|null $isKnown
4579 wfRunHooks( 'TitleIsAlwaysKnown', array( $this, &$isKnown ) );
4581 if ( !is_null( $isKnown ) ) {
4585 if ( $this->isExternal() ) {
4586 return true; // any interwiki link might be viewable, for all we know
4589 switch ( $this->mNamespace
) {
4592 // file exists, possibly in a foreign repo
4593 return (bool)wfFindFile( $this );
4595 // valid special page
4596 return SpecialPageFactory
::exists( $this->getDBkey() );
4598 // selflink, possibly with fragment
4599 return $this->mDbkeyform
== '';
4601 // known system message
4602 return $this->hasSourceText() !== false;
4609 * Does this title refer to a page that can (or might) be meaningfully
4610 * viewed? In particular, this function may be used to determine if
4611 * links to the title should be rendered as "bluelinks" (as opposed to
4612 * "redlinks" to non-existent pages).
4613 * Adding something else to this function will cause inconsistency
4614 * since LinkHolderArray calls isAlwaysKnown() and does its own
4615 * page existence check.
4619 public function isKnown() {
4620 return $this->isAlwaysKnown() ||
$this->exists();
4624 * Does this page have source text?
4628 public function hasSourceText() {
4629 if ( $this->exists() ) {
4633 if ( $this->mNamespace
== NS_MEDIAWIKI
) {
4634 // If the page doesn't exist but is a known system message, default
4635 // message content will be displayed, same for language subpages-
4636 // Use always content language to avoid loading hundreds of languages
4637 // to get the link color.
4639 list( $name, ) = MessageCache
::singleton()->figureMessage(
4640 $wgContLang->lcfirst( $this->getText() )
4642 $message = wfMessage( $name )->inLanguage( $wgContLang )->useDatabase( false );
4643 return $message->exists();
4650 * Get the default message text or false if the message doesn't exist
4652 * @return string|bool
4654 public function getDefaultMessageText() {
4657 if ( $this->getNamespace() != NS_MEDIAWIKI
) { // Just in case
4661 list( $name, $lang ) = MessageCache
::singleton()->figureMessage(
4662 $wgContLang->lcfirst( $this->getText() )
4664 $message = wfMessage( $name )->inLanguage( $lang )->useDatabase( false );
4666 if ( $message->exists() ) {
4667 return $message->plain();
4674 * Updates page_touched for this page; called from LinksUpdate.php
4676 * @return bool True if the update succeeded
4678 public function invalidateCache() {
4679 if ( wfReadOnly() ) {
4683 if ( $this->mArticleID
=== 0 ) {
4684 return true; // avoid gap locking if we know it's not there
4687 $method = __METHOD__
;
4688 $dbw = wfGetDB( DB_MASTER
);
4689 $conds = $this->pageCond();
4690 $dbw->onTransactionIdle( function () use ( $dbw, $conds, $method ) {
4693 array( 'page_touched' => $dbw->timestamp() ),
4703 * Update page_touched timestamps and send squid purge messages for
4704 * pages linking to this title. May be sent to the job queue depending
4705 * on the number of links. Typically called on create and delete.
4707 public function touchLinks() {
4708 $u = new HTMLCacheUpdate( $this, 'pagelinks' );
4711 if ( $this->getNamespace() == NS_CATEGORY
) {
4712 $u = new HTMLCacheUpdate( $this, 'categorylinks' );
4718 * Get the last touched timestamp
4720 * @param DatabaseBase $db Optional db
4721 * @return string Last-touched timestamp
4723 public function getTouched( $db = null ) {
4724 if ( $db === null ) {
4725 $db = wfGetDB( DB_SLAVE
);
4727 $touched = $db->selectField( 'page', 'page_touched', $this->pageCond(), __METHOD__
);
4732 * Get the timestamp when this page was updated since the user last saw it.
4735 * @return string|null
4737 public function getNotificationTimestamp( $user = null ) {
4738 global $wgUser, $wgShowUpdatedMarker;
4739 // Assume current user if none given
4743 // Check cache first
4744 $uid = $user->getId();
4745 // avoid isset here, as it'll return false for null entries
4746 if ( array_key_exists( $uid, $this->mNotificationTimestamp
) ) {
4747 return $this->mNotificationTimestamp
[$uid];
4749 if ( !$uid ||
!$wgShowUpdatedMarker ||
!$user->isAllowed( 'viewmywatchlist' ) ) {
4750 $this->mNotificationTimestamp
[$uid] = false;
4751 return $this->mNotificationTimestamp
[$uid];
4753 // Don't cache too much!
4754 if ( count( $this->mNotificationTimestamp
) >= self
::CACHE_MAX
) {
4755 $this->mNotificationTimestamp
= array();
4757 $dbr = wfGetDB( DB_SLAVE
);
4758 $this->mNotificationTimestamp
[$uid] = $dbr->selectField( 'watchlist',
4759 'wl_notificationtimestamp',
4761 'wl_user' => $user->getId(),
4762 'wl_namespace' => $this->getNamespace(),
4763 'wl_title' => $this->getDBkey(),
4767 return $this->mNotificationTimestamp
[$uid];
4771 * Generate strings used for xml 'id' names in monobook tabs
4773 * @param string $prepend Defaults to 'nstab-'
4774 * @return string XML 'id' name
4776 public function getNamespaceKey( $prepend = 'nstab-' ) {
4778 // Gets the subject namespace if this title
4779 $namespace = MWNamespace
::getSubject( $this->getNamespace() );
4780 // Checks if canonical namespace name exists for namespace
4781 if ( MWNamespace
::exists( $this->getNamespace() ) ) {
4782 // Uses canonical namespace name
4783 $namespaceKey = MWNamespace
::getCanonicalName( $namespace );
4785 // Uses text of namespace
4786 $namespaceKey = $this->getSubjectNsText();
4788 // Makes namespace key lowercase
4789 $namespaceKey = $wgContLang->lc( $namespaceKey );
4791 if ( $namespaceKey == '' ) {
4792 $namespaceKey = 'main';
4794 // Changes file to image for backwards compatibility
4795 if ( $namespaceKey == 'file' ) {
4796 $namespaceKey = 'image';
4798 return $prepend . $namespaceKey;
4802 * Get all extant redirects to this Title
4804 * @param int|null $ns Single namespace to consider; null to consider all namespaces
4805 * @return Title[] Array of Title redirects to this title
4807 public function getRedirectsHere( $ns = null ) {
4810 $dbr = wfGetDB( DB_SLAVE
);
4812 'rd_namespace' => $this->getNamespace(),
4813 'rd_title' => $this->getDBkey(),
4816 if ( $this->isExternal() ) {
4817 $where['rd_interwiki'] = $this->getInterwiki();
4819 $where[] = 'rd_interwiki = ' . $dbr->addQuotes( '' ) . ' OR rd_interwiki IS NULL';
4821 if ( !is_null( $ns ) ) {
4822 $where['page_namespace'] = $ns;
4825 $res = $dbr->select(
4826 array( 'redirect', 'page' ),
4827 array( 'page_namespace', 'page_title' ),
4832 foreach ( $res as $row ) {
4833 $redirs[] = self
::newFromRow( $row );
4839 * Check if this Title is a valid redirect target
4843 public function isValidRedirectTarget() {
4844 global $wgInvalidRedirectTargets;
4846 // invalid redirect targets are stored in a global array, but explicitly disallow Userlogout here
4847 if ( $this->isSpecial( 'Userlogout' ) ) {
4851 foreach ( $wgInvalidRedirectTargets as $target ) {
4852 if ( $this->isSpecial( $target ) ) {
4861 * Get a backlink cache object
4863 * @return BacklinkCache
4865 public function getBacklinkCache() {
4866 return BacklinkCache
::get( $this );
4870 * Whether the magic words __INDEX__ and __NOINDEX__ function for this page.
4874 public function canUseNoindex() {
4875 global $wgContentNamespaces, $wgExemptFromUserRobotsControl;
4877 $bannedNamespaces = is_null( $wgExemptFromUserRobotsControl )
4878 ?
$wgContentNamespaces
4879 : $wgExemptFromUserRobotsControl;
4881 return !in_array( $this->mNamespace
, $bannedNamespaces );
4886 * Returns the raw sort key to be used for categories, with the specified
4887 * prefix. This will be fed to Collation::getSortKey() to get a
4888 * binary sortkey that can be used for actual sorting.
4890 * @param string $prefix The prefix to be used, specified using
4891 * {{defaultsort:}} or like [[Category:Foo|prefix]]. Empty for no
4895 public function getCategorySortkey( $prefix = '' ) {
4896 $unprefixed = $this->getText();
4898 // Anything that uses this hook should only depend
4899 // on the Title object passed in, and should probably
4900 // tell the users to run updateCollations.php --force
4901 // in order to re-sort existing category relations.
4902 wfRunHooks( 'GetDefaultSortkey', array( $this, &$unprefixed ) );
4903 if ( $prefix !== '' ) {
4904 # Separate with a line feed, so the unprefixed part is only used as
4905 # a tiebreaker when two pages have the exact same prefix.
4906 # In UCA, tab is the only character that can sort above LF
4907 # so we strip both of them from the original prefix.
4908 $prefix = strtr( $prefix, "\n\t", ' ' );
4909 return "$prefix\n$unprefixed";
4915 * Get the language in which the content of this page is written in
4916 * wikitext. Defaults to $wgContLang, but in certain cases it can be
4917 * e.g. $wgLang (such as special pages, which are in the user language).
4922 public function getPageLanguage() {
4923 global $wgLang, $wgLanguageCode;
4924 wfProfileIn( __METHOD__
);
4925 if ( $this->isSpecialPage() ) {
4926 // special pages are in the user language
4927 wfProfileOut( __METHOD__
);
4931 // Checking if DB language is set
4932 if ( $this->mDbPageLanguage
) {
4933 wfProfileOut( __METHOD__
);
4934 return wfGetLangObj( $this->mDbPageLanguage
);
4937 if ( !$this->mPageLanguage ||
$this->mPageLanguage
[1] !== $wgLanguageCode ) {
4938 // Note that this may depend on user settings, so the cache should
4939 // be only per-request.
4940 // NOTE: ContentHandler::getPageLanguage() may need to load the
4941 // content to determine the page language!
4942 // Checking $wgLanguageCode hasn't changed for the benefit of unit
4944 $contentHandler = ContentHandler
::getForTitle( $this );
4945 $langObj = wfGetLangObj( $contentHandler->getPageLanguage( $this ) );
4946 $this->mPageLanguage
= array( $langObj->getCode(), $wgLanguageCode );
4948 $langObj = wfGetLangObj( $this->mPageLanguage
[0] );
4951 wfProfileOut( __METHOD__
);
4956 * Get the language in which the content of this page is written when
4957 * viewed by user. Defaults to $wgContLang, but in certain cases it can be
4958 * e.g. $wgLang (such as special pages, which are in the user language).
4963 public function getPageViewLanguage() {
4966 if ( $this->isSpecialPage() ) {
4967 // If the user chooses a variant, the content is actually
4968 // in a language whose code is the variant code.
4969 $variant = $wgLang->getPreferredVariant();
4970 if ( $wgLang->getCode() !== $variant ) {
4971 return Language
::factory( $variant );
4977 // @note Can't be cached persistently, depends on user settings.
4978 // @note ContentHandler::getPageViewLanguage() may need to load the
4979 // content to determine the page language!
4980 $contentHandler = ContentHandler
::getForTitle( $this );
4981 $pageLang = $contentHandler->getPageViewLanguage( $this );
4986 * Get a list of rendered edit notices for this page.
4988 * Array is keyed by the original message key, and values are rendered using parseAsBlock, so
4989 * they will already be wrapped in paragraphs.
4992 * @param int $oldid Revision ID that's being edited
4995 public function getEditNotices( $oldid = 0 ) {
4998 # Optional notices on a per-namespace and per-page basis
4999 $editnotice_ns = 'editnotice-' . $this->getNamespace();
5000 $editnotice_ns_message = wfMessage( $editnotice_ns );
5001 if ( $editnotice_ns_message->exists() ) {
5002 $notices[$editnotice_ns] = $editnotice_ns_message->parseAsBlock();
5004 if ( MWNamespace
::hasSubpages( $this->getNamespace() ) ) {
5005 $parts = explode( '/', $this->getDBkey() );
5006 $editnotice_base = $editnotice_ns;
5007 while ( count( $parts ) > 0 ) {
5008 $editnotice_base .= '-' . array_shift( $parts );
5009 $editnotice_base_msg = wfMessage( $editnotice_base );
5010 if ( $editnotice_base_msg->exists() ) {
5011 $notices[$editnotice_base] = $editnotice_base_msg->parseAsBlock();
5015 # Even if there are no subpages in namespace, we still don't want / in MW ns.
5016 $editnoticeText = $editnotice_ns . '-' . str_replace( '/', '-', $this->getDBkey() );
5017 $editnoticeMsg = wfMessage( $editnoticeText );
5018 if ( $editnoticeMsg->exists() ) {
5019 $notices[$editnoticeText] = $editnoticeMsg->parseAsBlock();
5023 wfRunHooks( 'TitleGetEditNotices', array( $this, $oldid, &$notices ) );