From 183851b06bd6c52f3cae5375f433da720d410447 Mon Sep 17 00:00:00 2001 From: Pierre Schmitz Date: Wed, 11 Oct 2006 18:12:39 +0000 Subject: MediaWiki 1.7.1 wiederhergestellt --- includes/Title.php | 2307 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 2307 insertions(+) create mode 100644 includes/Title.php (limited to 'includes/Title.php') diff --git a/includes/Title.php b/includes/Title.php new file mode 100644 index 00000000..bc8f69a2 --- /dev/null +++ b/includes/Title.php @@ -0,0 +1,2307 @@ +mInterwiki = $this->mUrlform = + $this->mTextform = $this->mDbkeyform = ''; + $this->mArticleID = -1; + $this->mNamespace = NS_MAIN; + $this->mRestrictionsLoaded = false; + $this->mRestrictions = array(); + # Dont change the following, NS_MAIN is hardcoded in several place + # See bug #696 + $this->mDefaultNamespace = NS_MAIN; + $this->mWatched = NULL; + $this->mLatestID = false; + } + + /** + * Create a new Title from a prefixed DB key + * @param string $key The database key, which has underscores + * instead of spaces, possibly including namespace and + * interwiki prefixes + * @return Title the new object, or NULL on an error + * @static + * @access public + */ + /* static */ function newFromDBkey( $key ) { + $t = new Title(); + $t->mDbkeyform = $key; + if( $t->secureAndSplit() ) + return $t; + else + return NULL; + } + + /** + * Create a new Title from text, such as what one would + * find in a link. Decodes any HTML entities in the text. + * + * @param string $text the link text; spaces, prefixes, + * and an initial ':' indicating the main namespace + * are accepted + * @param int $defaultNamespace the namespace to use if + * none is specified by a prefix + * @return Title the new object, or NULL on an error + * @static + * @access public + */ + function newFromText( $text, $defaultNamespace = NS_MAIN ) { + $fname = 'Title::newFromText'; + + if( is_object( $text ) ) { + throw new MWException( 'Title::newFromText given an object' ); + } + + /** + * Wiki pages often contain multiple links to the same page. + * Title normalization and parsing can become expensive on + * pages with many links, so we can save a little time by + * caching them. + * + * In theory these are value objects and won't get changed... + */ + if( $defaultNamespace == NS_MAIN && isset( Title::$titleCache[$text] ) ) { + return Title::$titleCache[$text]; + } + + /** + * Convert things like é ā or 〗 into real text... + */ + $filteredText = Sanitizer::decodeCharReferences( $text ); + + $t =& new Title(); + $t->mDbkeyform = str_replace( ' ', '_', $filteredText ); + $t->mDefaultNamespace = $defaultNamespace; + + static $cachedcount = 0 ; + if( $t->secureAndSplit() ) { + if( $defaultNamespace == NS_MAIN ) { + if( $cachedcount >= MW_TITLECACHE_MAX ) { + # Avoid memory leaks on mass operations... + Title::$titleCache = array(); + $cachedcount=0; + } + $cachedcount++; + Title::$titleCache[$text] =& $t; + } + return $t; + } else { + $ret = NULL; + return $ret; + } + } + + /** + * Create a new Title from URL-encoded text. Ensures that + * the given title's length does not exceed the maximum. + * @param string $url the title, as might be taken from a URL + * @return Title the new object, or NULL on an error + * @static + * @access public + */ + function newFromURL( $url ) { + global $wgLegalTitleChars; + $t = new Title(); + + # For compatibility with old buggy URLs. "+" is usually not valid in titles, + # but some URLs used it as a space replacement and they still come + # from some external search tools. + if ( strpos( $wgLegalTitleChars, '+' ) === false ) { + $url = str_replace( '+', ' ', $url ); + } + + $t->mDbkeyform = str_replace( ' ', '_', $url ); + if( $t->secureAndSplit() ) { + return $t; + } else { + return NULL; + } + } + + /** + * Create a new Title from an article ID + * + * @todo This is inefficiently implemented, the page row is requested + * but not used for anything else + * + * @param int $id the page_id corresponding to the Title to create + * @return Title the new object, or NULL on an error + * @access public + * @static + */ + function newFromID( $id ) { + $fname = 'Title::newFromID'; + $dbr =& wfGetDB( DB_SLAVE ); + $row = $dbr->selectRow( 'page', array( 'page_namespace', 'page_title' ), + array( 'page_id' => $id ), $fname ); + if ( $row !== false ) { + $title = Title::makeTitle( $row->page_namespace, $row->page_title ); + } else { + $title = NULL; + } + return $title; + } + + /** + * Make an array of titles from an array of IDs + */ + function newFromIDs( $ids ) { + $dbr =& wfGetDB( DB_SLAVE ); + $res = $dbr->select( 'page', array( 'page_namespace', 'page_title' ), + 'page_id IN (' . $dbr->makeList( $ids ) . ')', __METHOD__ ); + + $titles = array(); + while ( $row = $dbr->fetchObject( $res ) ) { + $titles[] = Title::makeTitle( $row->page_namespace, $row->page_title ); + } + return $titles; + } + + /** + * Create a new Title from a namespace index and a DB key. + * It's assumed that $ns and $title are *valid*, for instance when + * they came directly from the database or a special page name. + * For convenience, spaces are converted to underscores so that + * eg user_text fields can be used directly. + * + * @param int $ns the namespace of the article + * @param string $title the unprefixed database key form + * @return Title the new object + * @static + * @access public + */ + function &makeTitle( $ns, $title ) { + $t =& new Title(); + $t->mInterwiki = ''; + $t->mFragment = ''; + $t->mNamespace = intval( $ns ); + $t->mDbkeyform = str_replace( ' ', '_', $title ); + $t->mArticleID = ( $ns >= 0 ) ? -1 : 0; + $t->mUrlform = wfUrlencode( $t->mDbkeyform ); + $t->mTextform = str_replace( '_', ' ', $title ); + return $t; + } + + /** + * Create a new Title frrom a namespace index and a DB key. + * The parameters will be checked for validity, which is a bit slower + * than makeTitle() but safer for user-provided data. + * + * @param int $ns the namespace of the article + * @param string $title the database key form + * @return Title the new object, or NULL on an error + * @static + * @access public + */ + function makeTitleSafe( $ns, $title ) { + $t = new Title(); + $t->mDbkeyform = Title::makeName( $ns, $title ); + if( $t->secureAndSplit() ) { + return $t; + } else { + return NULL; + } + } + + /** + * Create a new Title for the Main Page + * + * @static + * @return Title the new object + * @access public + */ + function newMainPage() { + return Title::newFromText( wfMsgForContent( 'mainpage' ) ); + } + + /** + * Create a new Title for a redirect + * @param string $text the redirect title text + * @return Title the new object, or NULL if the text is not a + * valid redirect + * @static + * @access public + */ + function newFromRedirect( $text ) { + $mwRedir = MagicWord::get( MAG_REDIRECT ); + $rt = NULL; + if ( $mwRedir->matchStart( $text ) ) { + if ( preg_match( '/\[{2}(.*?)(?:\||\]{2})/', $text, $m ) ) { + # categories are escaped using : for example one can enter: + # #REDIRECT [[:Category:Music]]. Need to remove it. + if ( substr($m[1],0,1) == ':') { + # We don't want to keep the ':' + $m[1] = substr( $m[1], 1 ); + } + + $rt = Title::newFromText( $m[1] ); + # Disallow redirects to Special:Userlogout + if ( !is_null($rt) && $rt->getNamespace() == NS_SPECIAL && preg_match( '/^Userlogout/i', $rt->getText() ) ) { + $rt = NULL; + } + } + } + return $rt; + } + +#---------------------------------------------------------------------------- +# Static functions +#---------------------------------------------------------------------------- + + /** + * Get the prefixed DB key associated with an ID + * @param int $id the page_id of the article + * @return Title an object representing the article, or NULL + * if no such article was found + * @static + * @access public + */ + function nameOf( $id ) { + $fname = 'Title::nameOf'; + $dbr =& wfGetDB( DB_SLAVE ); + + $s = $dbr->selectRow( 'page', array( 'page_namespace','page_title' ), array( 'page_id' => $id ), $fname ); + if ( $s === false ) { return NULL; } + + $n = Title::makeName( $s->page_namespace, $s->page_title ); + return $n; + } + + /** + * Get a regex character class describing the legal characters in a link + * @return string the list of characters, not delimited + * @static + * @access public + */ + function legalChars() { + global $wgLegalTitleChars; + return $wgLegalTitleChars; + } + + /** + * Get a string representation of a title suitable for + * including in a search index + * + * @param int $ns a namespace index + * @param string $title text-form main part + * @return string a stripped-down title string ready for the + * search index + */ + /* static */ function indexTitle( $ns, $title ) { + global $wgContLang; + + $lc = SearchEngine::legalSearchChars() . '&#;'; + $t = $wgContLang->stripForSearch( $title ); + $t = preg_replace( "/[^{$lc}]+/", ' ', $t ); + $t = strtolower( $t ); + + # Handle 's, s' + $t = preg_replace( "/([{$lc}]+)'s( |$)/", "\\1 \\1's ", $t ); + $t = preg_replace( "/([{$lc}]+)s'( |$)/", "\\1s ", $t ); + + $t = preg_replace( "/\\s+/", ' ', $t ); + + if ( $ns == NS_IMAGE ) { + $t = preg_replace( "/ (png|gif|jpg|jpeg|ogg)$/", "", $t ); + } + return trim( $t ); + } + + /* + * Make a prefixed DB key from a DB key and a namespace index + * @param int $ns numerical representation of the namespace + * @param string $title the DB key form the title + * @return string the prefixed form of the title + */ + /* static */ function makeName( $ns, $title ) { + global $wgContLang; + + $n = $wgContLang->getNsText( $ns ); + return $n == '' ? $title : "$n:$title"; + } + + /** + * Returns the URL associated with an interwiki prefix + * @param string $key the interwiki prefix (e.g. "MeatBall") + * @return the associated URL, containing "$1", which should be + * replaced by an article title + * @static (arguably) + * @access public + */ + function getInterwikiLink( $key ) { + global $wgMemc, $wgDBname, $wgInterwikiExpiry; + global $wgInterwikiCache; + $fname = 'Title::getInterwikiLink'; + + $key = strtolower( $key ); + + $k = $wgDBname.':interwiki:'.$key; + if( array_key_exists( $k, Title::$interwikiCache ) ) { + return Title::$interwikiCache[$k]->iw_url; + } + + if ($wgInterwikiCache) { + return Title::getInterwikiCached( $key ); + } + + $s = $wgMemc->get( $k ); + # Ignore old keys with no iw_local + if( $s && isset( $s->iw_local ) && isset($s->iw_trans)) { + Title::$interwikiCache[$k] = $s; + return $s->iw_url; + } + + $dbr =& wfGetDB( DB_SLAVE ); + $res = $dbr->select( 'interwiki', + array( 'iw_url', 'iw_local', 'iw_trans' ), + array( 'iw_prefix' => $key ), $fname ); + if( !$res ) { + return ''; + } + + $s = $dbr->fetchObject( $res ); + if( !$s ) { + # Cache non-existence: create a blank object and save it to memcached + $s = (object)false; + $s->iw_url = ''; + $s->iw_local = 0; + $s->iw_trans = 0; + } + $wgMemc->set( $k, $s, $wgInterwikiExpiry ); + Title::$interwikiCache[$k] = $s; + + return $s->iw_url; + } + + /** + * Fetch interwiki prefix data from local cache in constant database + * + * More logic is explained in DefaultSettings + * + * @return string URL of interwiki site + * @access public + */ + function getInterwikiCached( $key ) { + global $wgDBname, $wgInterwikiCache, $wgInterwikiScopes, $wgInterwikiFallbackSite; + static $db, $site; + + if (!$db) + $db=dba_open($wgInterwikiCache,'r','cdb'); + /* Resolve site name */ + if ($wgInterwikiScopes>=3 and !$site) { + $site = dba_fetch("__sites:{$wgDBname}", $db); + if ($site=="") + $site = $wgInterwikiFallbackSite; + } + $value = dba_fetch("{$wgDBname}:{$key}", $db); + if ($value=='' and $wgInterwikiScopes>=3) { + /* try site-level */ + $value = dba_fetch("_{$site}:{$key}", $db); + } + if ($value=='' and $wgInterwikiScopes>=2) { + /* try globals */ + $value = dba_fetch("__global:{$key}", $db); + } + if ($value=='undef') + $value=''; + $s = (object)false; + $s->iw_url = ''; + $s->iw_local = 0; + $s->iw_trans = 0; + if ($value!='') { + list($local,$url)=explode(' ',$value,2); + $s->iw_url=$url; + $s->iw_local=(int)$local; + } + Title::$interwikiCache[$wgDBname.':interwiki:'.$key] = $s; + return $s->iw_url; + } + /** + * Determine whether the object refers to a page within + * this project. + * + * @return bool TRUE if this is an in-project interwiki link + * or a wikilink, FALSE otherwise + * @access public + */ + function isLocal() { + global $wgDBname; + + if ( $this->mInterwiki != '' ) { + # Make sure key is loaded into cache + $this->getInterwikiLink( $this->mInterwiki ); + $k = $wgDBname.':interwiki:' . $this->mInterwiki; + return (bool)(Title::$interwikiCache[$k]->iw_local); + } else { + return true; + } + } + + /** + * Determine whether the object refers to a page within + * this project and is transcludable. + * + * @return bool TRUE if this is transcludable + * @access public + */ + function isTrans() { + global $wgDBname; + + if ($this->mInterwiki == '') + return false; + # Make sure key is loaded into cache + $this->getInterwikiLink( $this->mInterwiki ); + $k = $wgDBname.':interwiki:' . $this->mInterwiki; + return (bool)(Title::$interwikiCache[$k]->iw_trans); + } + + /** + * Update the page_touched field for an array of title objects + * @todo Inefficient unless the IDs are already loaded into the + * link cache + * @param array $titles an array of Title objects to be touched + * @param string $timestamp the timestamp to use instead of the + * default current time + * @static + * @access public + */ + function touchArray( $titles, $timestamp = '' ) { + + if ( count( $titles ) == 0 ) { + return; + } + $dbw =& wfGetDB( DB_MASTER ); + if ( $timestamp == '' ) { + $timestamp = $dbw->timestamp(); + } + /* + $page = $dbw->tableName( 'page' ); + $sql = "UPDATE $page SET page_touched='{$timestamp}' WHERE page_id IN ("; + $first = true; + + foreach ( $titles as $title ) { + if ( $wgUseFileCache ) { + $cm = new CacheManager($title); + @unlink($cm->fileCacheName()); + } + + if ( ! $first ) { + $sql .= ','; + } + $first = false; + $sql .= $title->getArticleID(); + } + $sql .= ')'; + if ( ! $first ) { + $dbw->query( $sql, 'Title::touchArray' ); + } + */ + // hack hack hack -- brion 2005-07-11. this was unfriendly to db. + // do them in small chunks: + $fname = 'Title::touchArray'; + foreach( $titles as $title ) { + $dbw->update( 'page', + array( 'page_touched' => $timestamp ), + array( + 'page_namespace' => $title->getNamespace(), + 'page_title' => $title->getDBkey() ), + $fname ); + } + } + +#---------------------------------------------------------------------------- +# Other stuff +#---------------------------------------------------------------------------- + + /** Simple accessors */ + /** + * Get the text form (spaces not underscores) of the main part + * @return string + * @access public + */ + function getText() { return $this->mTextform; } + /** + * Get the URL-encoded form of the main part + * @return string + * @access public + */ + function getPartialURL() { return $this->mUrlform; } + /** + * Get the main part with underscores + * @return string + * @access public + */ + function getDBkey() { return $this->mDbkeyform; } + /** + * Get the namespace index, i.e. one of the NS_xxxx constants + * @return int + * @access public + */ + function getNamespace() { return $this->mNamespace; } + /** + * Get the namespace text + * @return string + * @access public + */ + function getNsText() { + global $wgContLang; + return $wgContLang->getNsText( $this->mNamespace ); + } + /** + * Get the namespace text of the subject (rather than talk) page + * @return string + * @access public + */ + function getSubjectNsText() { + global $wgContLang; + return $wgContLang->getNsText( Namespace::getSubject( $this->mNamespace ) ); + } + + /** + * Get the namespace text of the talk page + * @return string + */ + function getTalkNsText() { + global $wgContLang; + return( $wgContLang->getNsText( Namespace::getTalk( $this->mNamespace ) ) ); + } + + /** + * Could this title have a corresponding talk page? + * @return bool + */ + function canTalk() { + return( Namespace::canTalk( $this->mNamespace ) ); + } + + /** + * Get the interwiki prefix (or null string) + * @return string + * @access public + */ + function getInterwiki() { return $this->mInterwiki; } + /** + * Get the Title fragment (i.e. the bit after the #) + * @return string + * @access public + */ + function getFragment() { return $this->mFragment; } + /** + * Get the default namespace index, for when there is no namespace + * @return int + * @access public + */ + function getDefaultNamespace() { return $this->mDefaultNamespace; } + + /** + * Get title for search index + * @return string a stripped-down title string ready for the + * search index + */ + function getIndexTitle() { + return Title::indexTitle( $this->mNamespace, $this->mTextform ); + } + + /** + * Get the prefixed database key form + * @return string the prefixed title, with underscores and + * any interwiki and namespace prefixes + * @access public + */ + function getPrefixedDBkey() { + $s = $this->prefix( $this->mDbkeyform ); + $s = str_replace( ' ', '_', $s ); + return $s; + } + + /** + * Get the prefixed title with spaces. + * This is the form usually used for display + * @return string the prefixed title, with spaces + * @access public + */ + function getPrefixedText() { + if ( empty( $this->mPrefixedText ) ) { // FIXME: bad usage of empty() ? + $s = $this->prefix( $this->mTextform ); + $s = str_replace( '_', ' ', $s ); + $this->mPrefixedText = $s; + } + return $this->mPrefixedText; + } + + /** + * Get the prefixed title with spaces, plus any fragment + * (part beginning with '#') + * @return string the prefixed title, with spaces and + * the fragment, including '#' + * @access public + */ + function getFullText() { + $text = $this->getPrefixedText(); + if( '' != $this->mFragment ) { + $text .= '#' . $this->mFragment; + } + return $text; + } + + /** + * Get the base name, i.e. the leftmost parts before the / + * @return string Base name + */ + function getBaseText() { + global $wgNamespacesWithSubpages; + if( isset( $wgNamespacesWithSubpages[ $this->mNamespace ] ) && $wgNamespacesWithSubpages[ $this->mNamespace ] ) { + $parts = explode( '/', $this->getText() ); + # Don't discard the real title if there's no subpage involved + if( count( $parts ) > 1 ) + unset( $parts[ count( $parts ) - 1 ] ); + return implode( '/', $parts ); + } else { + return $this->getText(); + } + } + + /** + * Get the lowest-level subpage name, i.e. the rightmost part after / + * @return string Subpage name + */ + function getSubpageText() { + global $wgNamespacesWithSubpages; + if( isset( $wgNamespacesWithSubpages[ $this->mNamespace ] ) && $wgNamespacesWithSubpages[ $this->mNamespace ] ) { + $parts = explode( '/', $this->mTextform ); + return( $parts[ count( $parts ) - 1 ] ); + } else { + return( $this->mTextform ); + } + } + + /** + * Get a URL-encoded form of the subpage text + * @return string URL-encoded subpage name + */ + function getSubpageUrlForm() { + $text = $this->getSubpageText(); + $text = wfUrlencode( str_replace( ' ', '_', $text ) ); + $text = str_replace( '%28', '(', str_replace( '%29', ')', $text ) ); # Clean up the URL; per below, this might not be safe + return( $text ); + } + + /** + * Get a URL-encoded title (not an actual URL) including interwiki + * @return string the URL-encoded form + * @access public + */ + function getPrefixedURL() { + $s = $this->prefix( $this->mDbkeyform ); + $s = str_replace( ' ', '_', $s ); + + $s = wfUrlencode ( $s ) ; + + # Cleaning up URL to make it look nice -- is this safe? + $s = str_replace( '%28', '(', $s ); + $s = str_replace( '%29', ')', $s ); + + return $s; + } + + /** + * Get a real URL referring to this title, with interwiki link and + * fragment + * + * @param string $query an optional query string, not used + * for interwiki links + * @return string the URL + * @access public + */ + function getFullURL( $query = '' ) { + global $wgContLang, $wgServer, $wgRequest; + + if ( '' == $this->mInterwiki ) { + $url = $this->getLocalUrl( $query ); + + // Ugly quick hack to avoid duplicate prefixes (bug 4571 etc) + // Correct fix would be to move the prepending elsewhere. + if ($wgRequest->getVal('action') != 'render') { + $url = $wgServer . $url; + } + } else { + $baseUrl = $this->getInterwikiLink( $this->mInterwiki ); + + $namespace = $wgContLang->getNsText( $this->mNamespace ); + if ( '' != $namespace ) { + # Can this actually happen? Interwikis shouldn't be parsed. + $namespace .= ':'; + } + $url = str_replace( '$1', $namespace . $this->mUrlform, $baseUrl ); + if( $query != '' ) { + if( false === strpos( $url, '?' ) ) { + $url .= '?'; + } else { + $url .= '&'; + } + $url .= $query; + } + } + + # Finally, add the fragment. + if ( '' != $this->mFragment ) { + $url .= '#' . $this->mFragment; + } + + wfRunHooks( 'GetFullURL', array( &$this, &$url, $query ) ); + return $url; + } + + /** + * Get a URL with no fragment or server name. If this page is generated + * with action=render, $wgServer is prepended. + * @param string $query an optional query string; if not specified, + * $wgArticlePath will be used. + * @return string the URL + * @access public + */ + function getLocalURL( $query = '' ) { + global $wgArticlePath, $wgScript, $wgServer, $wgRequest; + + if ( $this->isExternal() ) { + $url = $this->getFullURL(); + if ( $query ) { + // This is currently only used for edit section links in the + // context of interwiki transclusion. In theory we should + // append the query to the end of any existing query string, + // but interwiki transclusion is already broken in that case. + $url .= "?$query"; + } + } else { + $dbkey = wfUrlencode( $this->getPrefixedDBkey() ); + if ( $query == '' ) { + $url = str_replace( '$1', $dbkey, $wgArticlePath ); + } else { + global $wgActionPaths; + $url = false; + if( !empty( $wgActionPaths ) && + preg_match( '/^(.*&|)action=([^&]*)(&(.*)|)$/', $query, $matches ) ) + { + $action = urldecode( $matches[2] ); + if( isset( $wgActionPaths[$action] ) ) { + $query = $matches[1]; + if( isset( $matches[4] ) ) $query .= $matches[4]; + $url = str_replace( '$1', $dbkey, $wgActionPaths[$action] ); + if( $query != '' ) $url .= '?' . $query; + } + } + if ( $url === false ) { + if ( $query == '-' ) { + $query = ''; + } + $url = "{$wgScript}?title={$dbkey}&{$query}"; + } + } + + // FIXME: this causes breakage in various places when we + // actually expected a local URL and end up with dupe prefixes. + if ($wgRequest->getVal('action') == 'render') { + $url = $wgServer . $url; + } + } + wfRunHooks( 'GetLocalURL', array( &$this, &$url, $query ) ); + return $url; + } + + /** + * Get an HTML-escaped version of the URL form, suitable for + * using in a link, without a server name or fragment + * @param string $query an optional query string + * @return string the URL + * @access public + */ + function escapeLocalURL( $query = '' ) { + return htmlspecialchars( $this->getLocalURL( $query ) ); + } + + /** + * Get an HTML-escaped version of the URL form, suitable for + * using in a link, including the server name and fragment + * + * @return string the URL + * @param string $query an optional query string + * @access public + */ + function escapeFullURL( $query = '' ) { + return htmlspecialchars( $this->getFullURL( $query ) ); + } + + /** + * Get the URL form for an internal link. + * - Used in various Squid-related code, in case we have a different + * internal hostname for the server from the exposed one. + * + * @param string $query an optional query string + * @return string the URL + * @access public + */ + function getInternalURL( $query = '' ) { + global $wgInternalServer; + $url = $wgInternalServer . $this->getLocalURL( $query ); + wfRunHooks( 'GetInternalURL', array( &$this, &$url, $query ) ); + return $url; + } + + /** + * Get the edit URL for this Title + * @return string the URL, or a null string if this is an + * interwiki link + * @access public + */ + function getEditURL() { + if ( '' != $this->mInterwiki ) { return ''; } + $s = $this->getLocalURL( 'action=edit' ); + + return $s; + } + + /** + * Get the HTML-escaped displayable text form. + * Used for the title field in tags. + * @return string the text, including any prefixes + * @access public + */ + function getEscapedText() { + return htmlspecialchars( $this->getPrefixedText() ); + } + + /** + * Is this Title interwiki? + * @return boolean + * @access public + */ + function isExternal() { return ( '' != $this->mInterwiki ); } + + /** + * Is this page "semi-protected" - the *only* protection is autoconfirm? + * + * @param string Action to check (default: edit) + * @return bool + */ + function isSemiProtected( $action = 'edit' ) { + $restrictions = $this->getRestrictions( $action ); + # We do a full compare because this could be an array + foreach( $restrictions as $restriction ) { + if( strtolower( $restriction ) != 'autoconfirmed' ) { + return( false ); + } + } + return( true ); + } + + /** + * Does the title correspond to a protected article? + * @param string $what the action the page is protected from, + * by default checks move and edit + * @return boolean + * @access public + */ + function isProtected( $action = '' ) { + global $wgRestrictionLevels; + if ( -1 == $this->mNamespace ) { return true; } + + if( $action == 'edit' || $action == '' ) { + $r = $this->getRestrictions( 'edit' ); + foreach( $wgRestrictionLevels as $level ) { + if( in_array( $level, $r ) && $level != '' ) { + return( true ); + } + } + } + + if( $action == 'move' || $action == '' ) { + $r = $this->getRestrictions( 'move' ); + foreach( $wgRestrictionLevels as $level ) { + if( in_array( $level, $r ) && $level != '' ) { + return( true ); + } + } + } + + return false; + } + + /** + * Is $wgUser is watching this page? + * @return boolean + * @access public + */ + function userIsWatching() { + global $wgUser; + + if ( is_null( $this->mWatched ) ) { + if ( -1 == $this->mNamespace || 0 == $wgUser->getID()) { + $this->mWatched = false; + } else { + $this->mWatched = $wgUser->isWatched( $this ); + } + } + return $this->mWatched; + } + + /** + * Can $wgUser perform $action this page? + * @param string $action action that permission needs to be checked for + * @return boolean + * @private + */ + function userCan($action) { + $fname = 'Title::userCan'; + wfProfileIn( $fname ); + + global $wgUser; + + $result = null; + wfRunHooks( 'userCan', array( &$this, &$wgUser, $action, &$result ) ); + if ( $result !== null ) { + wfProfileOut( $fname ); + return $result; + } + + if( NS_SPECIAL == $this->mNamespace ) { + wfProfileOut( $fname ); + return false; + } + // XXX: This is the code that prevents unprotecting a page in NS_MEDIAWIKI + // from taking effect -ævar + if( NS_MEDIAWIKI == $this->mNamespace && + !$wgUser->isAllowed('editinterface') ) { + wfProfileOut( $fname ); + return false; + } + + if( $this->mDbkeyform == '_' ) { + # FIXME: Is this necessary? Shouldn't be allowed anyway... + wfProfileOut( $fname ); + return false; + } + + # protect css/js subpages of user pages + # XXX: this might be better using restrictions + # XXX: Find a way to work around the php bug that prevents using $this->userCanEditCssJsSubpage() from working + if( NS_USER == $this->mNamespace + && preg_match("/\\.(css|js)$/", $this->mTextform ) + && !$wgUser->isAllowed('editinterface') + && !preg_match('/^'.preg_quote($wgUser->getName(), '/').'\//', $this->mTextform) ) { + wfProfileOut( $fname ); + return false; + } + + foreach( $this->getRestrictions($action) as $right ) { + // Backwards compatibility, rewrite sysop -> protect + if ( $right == 'sysop' ) { + $right = 'protect'; + } + if( '' != $right && !$wgUser->isAllowed( $right ) ) { + wfProfileOut( $fname ); + return false; + } + } + + if( $action == 'move' && + !( $this->isMovable() && $wgUser->isAllowed( 'move' ) ) ) { + wfProfileOut( $fname ); + return false; + } + + if( $action == 'create' ) { + if( ( $this->isTalkPage() && !$wgUser->isAllowed( 'createtalk' ) ) || + ( !$this->isTalkPage() && !$wgUser->isAllowed( 'createpage' ) ) ) { + return false; + } + } + + wfProfileOut( $fname ); + return true; + } + + /** + * Can $wgUser edit this page? + * @return boolean + * @access public + */ + function userCanEdit() { + return $this->userCan('edit'); + } + + /** + * Can $wgUser create this page? + * @return boolean + * @access public + */ + function userCanCreate() { + return $this->userCan('create'); + } + + /** + * Can $wgUser move this page? + * @return boolean + * @access public + */ + function userCanMove() { + return $this->userCan('move'); + } + + /** + * Would anybody with sufficient privileges be able to move this page? + * Some pages just aren't movable. + * + * @return boolean + * @access public + */ + function isMovable() { + return Namespace::isMovable( $this->getNamespace() ) + && $this->getInterwiki() == ''; + } + + /** + * Can $wgUser read this page? + * @return boolean + * @access public + */ + function userCanRead() { + global $wgUser; + + $result = null; + wfRunHooks( 'userCan', array( &$this, &$wgUser, 'read', &$result ) ); + if ( $result !== null ) { + return $result; + } + + if( $wgUser->isAllowed('read') ) { + return true; + } else { + global $wgWhitelistRead; + + /** If anon users can create an account, + they need to reach the login page first! */ + if( $wgUser->isAllowed( 'createaccount' ) + && $this->getNamespace() == NS_SPECIAL + && $this->getText() == 'Userlogin' ) { + return true; + } + + /** some pages are explicitly allowed */ + $name = $this->getPrefixedText(); + if( $wgWhitelistRead && in_array( $name, $wgWhitelistRead ) ) { + return true; + } + + # Compatibility with old settings + if( $wgWhitelistRead && $this->getNamespace() == NS_MAIN ) { + if( in_array( ':' . $name, $wgWhitelistRead ) ) { + return true; + } + } + } + return false; + } + + /** + * Is this a talk page of some sort? + * @return bool + * @access public + */ + function isTalkPage() { + return Namespace::isTalk( $this->getNamespace() ); + } + + /** + * Is this a .css or .js subpage of a user page? + * @return bool + * @access public + */ + function isCssJsSubpage() { + return ( NS_USER == $this->mNamespace and preg_match("/\\.(css|js)$/", $this->mTextform ) ); + } + /** + * Is this a *valid* .css or .js subpage of a user page? + * Check that the corresponding skin exists + */ + function isValidCssJsSubpage() { + if ( $this->isCssJsSubpage() ) { + $skinNames = Skin::getSkinNames(); + return array_key_exists( $this->getSkinFromCssJsSubpage(), $skinNames ); + } else { + return false; + } + } + /** + * Trim down a .css or .js subpage title to get the corresponding skin name + */ + function getSkinFromCssJsSubpage() { + $subpage = explode( '/', $this->mTextform ); + $subpage = $subpage[ count( $subpage ) - 1 ]; + return( str_replace( array( '.css', '.js' ), array( '', '' ), $subpage ) ); + } + /** + * Is this a .css subpage of a user page? + * @return bool + * @access public + */ + function isCssSubpage() { + return ( NS_USER == $this->mNamespace and preg_match("/\\.css$/", $this->mTextform ) ); + } + /** + * Is this a .js subpage of a user page? + * @return bool + * @access public + */ + function isJsSubpage() { + return ( NS_USER == $this->mNamespace and preg_match("/\\.js$/", $this->mTextform ) ); + } + /** + * Protect css/js subpages of user pages: can $wgUser edit + * this page? + * + * @return boolean + * @todo XXX: this might be better using restrictions + * @access public + */ + function userCanEditCssJsSubpage() { + global $wgUser; + return ( $wgUser->isAllowed('editinterface') or preg_match('/^'.preg_quote($wgUser->getName(), '/').'\//', $this->mTextform) ); + } + + /** + * Loads a string into mRestrictions array + * @param string $res restrictions in string format + * @access public + */ + function loadRestrictions( $res ) { + foreach( explode( ':', trim( $res ) ) as $restrict ) { + $temp = explode( '=', trim( $restrict ) ); + if(count($temp) == 1) { + // old format should be treated as edit/move restriction + $this->mRestrictions["edit"] = explode( ',', trim( $temp[0] ) ); + $this->mRestrictions["move"] = explode( ',', trim( $temp[0] ) ); + } else { + $this->mRestrictions[$temp[0]] = explode( ',', trim( $temp[1] ) ); + } + } + $this->mRestrictionsLoaded = true; + } + + /** + * Accessor/initialisation for mRestrictions + * @param string $action action that permission needs to be checked for + * @return array the array of groups allowed to edit this article + * @access public + */ + function getRestrictions($action) { + $id = $this->getArticleID(); + if ( 0 == $id ) { return array(); } + + if ( ! $this->mRestrictionsLoaded ) { + $dbr =& wfGetDB( DB_SLAVE ); + $res = $dbr->selectField( 'page', 'page_restrictions', 'page_id='.$id ); + $this->loadRestrictions( $res ); + } + if( isset( $this->mRestrictions[$action] ) ) { + return $this->mRestrictions[$action]; + } + return array(); + } + + /** + * Is there a version of this page in the deletion archive? + * @return int the number of archived revisions + * @access public + */ + function isDeleted() { + $fname = 'Title::isDeleted'; + if ( $this->getNamespace() < 0 ) { + $n = 0; + } else { + $dbr =& wfGetDB( DB_SLAVE ); + $n = $dbr->selectField( 'archive', 'COUNT(*)', array( 'ar_namespace' => $this->getNamespace(), + 'ar_title' => $this->getDBkey() ), $fname ); + if( $this->getNamespace() == NS_IMAGE ) { + $n += $dbr->selectField( 'filearchive', 'COUNT(*)', + array( 'fa_name' => $this->getDBkey() ), $fname ); + } + } + return (int)$n; + } + + /** + * Get the article ID for this Title from the link cache, + * adding it if necessary + * @param int $flags a bit field; may be GAID_FOR_UPDATE to select + * for update + * @return int the ID + * @access public + */ + function getArticleID( $flags = 0 ) { + $linkCache =& LinkCache::singleton(); + if ( $flags & GAID_FOR_UPDATE ) { + $oldUpdate = $linkCache->forUpdate( true ); + $this->mArticleID = $linkCache->addLinkObj( $this ); + $linkCache->forUpdate( $oldUpdate ); + } else { + if ( -1 == $this->mArticleID ) { + $this->mArticleID = $linkCache->addLinkObj( $this ); + } + } + return $this->mArticleID; + } + + function getLatestRevID() { + if ($this->mLatestID !== false) + return $this->mLatestID; + + $db =& wfGetDB(DB_SLAVE); + return $this->mLatestID = $db->selectField( 'revision', + "max(rev_id)", + array('rev_page' => $this->getArticleID()), + 'Title::getLatestRevID' ); + } + + /** + * This clears some fields in this object, and clears any associated + * keys in the "bad links" section of the link cache. + * + * - This is called from Article::insertNewArticle() to allow + * loading of the new page_id. It's also called from + * Article::doDeleteArticle() + * + * @param int $newid the new Article ID + * @access public + */ + function resetArticleID( $newid ) { + $linkCache =& LinkCache::singleton(); + $linkCache->clearBadLink( $this->getPrefixedDBkey() ); + + if ( 0 == $newid ) { $this->mArticleID = -1; } + else { $this->mArticleID = $newid; } + $this->mRestrictionsLoaded = false; + $this->mRestrictions = array(); + } + + /** + * Updates page_touched for this page; called from LinksUpdate.php + * @return bool true if the update succeded + * @access public + */ + function invalidateCache() { + global $wgUseFileCache; + + if ( wfReadOnly() ) { + return; + } + + $dbw =& wfGetDB( DB_MASTER ); + $success = $dbw->update( 'page', + array( /* SET */ + 'page_touched' => $dbw->timestamp() + ), array( /* WHERE */ + 'page_namespace' => $this->getNamespace() , + 'page_title' => $this->getDBkey() + ), 'Title::invalidateCache' + ); + + if ($wgUseFileCache) { + $cache = new CacheManager($this); + @unlink($cache->fileCacheName()); + } + + return $success; + } + + /** + * Prefix some arbitrary text with the namespace or interwiki prefix + * of this object + * + * @param string $name the text + * @return string the prefixed text + * @private + */ + /* private */ function prefix( $name ) { + global $wgContLang; + + $p = ''; + if ( '' != $this->mInterwiki ) { + $p = $this->mInterwiki . ':'; + } + if ( 0 != $this->mNamespace ) { + $p .= $wgContLang->getNsText( $this->mNamespace ) . ':'; + } + return $p . $name; + } + + /** + * Secure and split - main initialisation function for this object + * + * Assumes that mDbkeyform has been set, and is urldecoded + * and uses underscores, but not otherwise munged. This function + * removes illegal characters, splits off the interwiki and + * namespace prefixes, sets the other forms, and canonicalizes + * everything. + * @return bool true on success + * @private + */ + /* private */ function secureAndSplit() { + global $wgContLang, $wgLocalInterwiki, $wgCapitalLinks; + $fname = 'Title::secureAndSplit'; + + # Initialisation + static $rxTc = false; + if( !$rxTc ) { + # % is needed as well + $rxTc = '/[^' . Title::legalChars() . ']|%[0-9A-Fa-f]{2}/S'; + } + + $this->mInterwiki = $this->mFragment = ''; + $this->mNamespace = $this->mDefaultNamespace; # Usually NS_MAIN + + # Clean up whitespace + # + $t = preg_replace( '/[ _]+/', '_', $this->mDbkeyform ); + $t = trim( $t, '_' ); + + if ( '' == $t ) { + return false; + } + + if( false !== strpos( $t, UTF8_REPLACEMENT ) ) { + # Contained illegal UTF-8 sequences or forbidden Unicode chars. + return false; + } + + $this->mDbkeyform = $t; + + # Initial colon indicates main namespace rather than specified default + # but should not create invalid {ns,title} pairs such as {0,Project:Foo} + if ( ':' == $t{0} ) { + $this->mNamespace = NS_MAIN; + $t = substr( $t, 1 ); # remove the colon but continue processing + } + + # Namespace or interwiki prefix + $firstPass = true; + do { + if ( preg_match( "/^(.+?)_*:_*(.*)$/S", $t, $m ) ) { + $p = $m[1]; + $lowerNs = strtolower( $p ); + if ( $ns = Namespace::getCanonicalIndex( $lowerNs ) ) { + # Canonical namespace + $t = $m[2]; + $this->mNamespace = $ns; + } elseif ( $ns = $wgContLang->getNsIndex( $lowerNs )) { + # Ordinary namespace + $t = $m[2]; + $this->mNamespace = $ns; + } elseif( $this->getInterwikiLink( $p ) ) { + if( !$firstPass ) { + # Can't make a local interwiki link to an interwiki link. + # That's just crazy! + return false; + } + + # Interwiki link + $t = $m[2]; + $this->mInterwiki = strtolower( $p ); + + # Redundant interwiki prefix to the local wiki + if ( 0 == strcasecmp( $this->mInterwiki, $wgLocalInterwiki ) ) { + if( $t == '' ) { + # Can't have an empty self-link + return false; + } + $this->mInterwiki = ''; + $firstPass = false; + # Do another namespace split... + continue; + } + + # If there's an initial colon after the interwiki, that also + # resets the default namespace + if ( $t !== '' && $t[0] == ':' ) { + $this->mNamespace = NS_MAIN; + $t = substr( $t, 1 ); + } + } + # If there's no recognized interwiki or namespace, + # then let the colon expression be part of the title. + } + break; + } while( true ); + $r = $t; + + # We already know that some pages won't be in the database! + # + if ( '' != $this->mInterwiki || -1 == $this->mNamespace ) { + $this->mArticleID = 0; + } + $f = strstr( $r, '#' ); + if ( false !== $f ) { + $this->mFragment = substr( $f, 1 ); + $r = substr( $r, 0, strlen( $r ) - strlen( $f ) ); + # remove whitespace again: prevents "Foo_bar_#" + # becoming "Foo_bar_" + $r = preg_replace( '/_*$/', '', $r ); + } + + # Reject illegal characters. + # + if( preg_match( $rxTc, $r ) ) { + return false; + } + + /** + * Pages with "/./" or "/../" appearing in the URLs will + * often be unreachable due to the way web browsers deal + * with 'relative' URLs. Forbid them explicitly. + */ + if ( strpos( $r, '.' ) !== false && + ( $r === '.' || $r === '..' || + strpos( $r, './' ) === 0 || + strpos( $r, '../' ) === 0 || + strpos( $r, '/./' ) !== false || + strpos( $r, '/../' ) !== false ) ) + { + return false; + } + + # We shouldn't need to query the DB for the size. + #$maxSize = $dbr->textFieldSize( 'page', 'page_title' ); + if ( strlen( $r ) > 255 ) { + return false; + } + + /** + * Normally, all wiki links are forced to have + * an initial capital letter so [[foo]] and [[Foo]] + * point to the same place. + * + * Don't force it for interwikis, since the other + * site might be case-sensitive. + */ + if( $wgCapitalLinks && $this->mInterwiki == '') { + $t = $wgContLang->ucfirst( $r ); + } else { + $t = $r; + } + + /** + * Can't make a link to a namespace alone... + * "empty" local links can only be self-links + * with a fragment identifier. + */ + if( $t == '' && + $this->mInterwiki == '' && + $this->mNamespace != NS_MAIN ) { + return false; + } + + // Any remaining initial :s are illegal. + if ( $t !== '' && ':' == $t{0} ) { + return false; + } + + # Fill fields + $this->mDbkeyform = $t; + $this->mUrlform = wfUrlencode( $t ); + + $this->mTextform = str_replace( '_', ' ', $t ); + + return true; + } + + /** + * Get a Title object associated with the talk page of this article + * @return Title the object for the talk page + * @access public + */ + function getTalkPage() { + return Title::makeTitle( Namespace::getTalk( $this->getNamespace() ), $this->getDBkey() ); + } + + /** + * Get a title object associated with the subject page of this + * talk page + * + * @return Title the object for the subject page + * @access public + */ + function getSubjectPage() { + return Title::makeTitle( Namespace::getSubject( $this->getNamespace() ), $this->getDBkey() ); + } + + /** + * Get an array of Title objects linking to this Title + * Also stores the IDs in the link cache. + * + * WARNING: do not use this function on arbitrary user-supplied titles! + * On heavily-used templates it will max out the memory. + * + * @param string $options may be FOR UPDATE + * @return array the Title objects linking here + * @access public + */ + function getLinksTo( $options = '', $table = 'pagelinks', $prefix = 'pl' ) { + $linkCache =& LinkCache::singleton(); + $id = $this->getArticleID(); + + if ( $options ) { + $db =& wfGetDB( DB_MASTER ); + } else { + $db =& wfGetDB( DB_SLAVE ); + } + + $res = $db->select( array( 'page', $table ), + array( 'page_namespace', 'page_title', 'page_id' ), + array( + "{$prefix}_from=page_id", + "{$prefix}_namespace" => $this->getNamespace(), + "{$prefix}_title" => $this->getDbKey() ), + 'Title::getLinksTo', + $options ); + + $retVal = array(); + if ( $db->numRows( $res ) ) { + while ( $row = $db->fetchObject( $res ) ) { + if ( $titleObj = Title::makeTitle( $row->page_namespace, $row->page_title ) ) { + $linkCache->addGoodLinkObj( $row->page_id, $titleObj ); + $retVal[] = $titleObj; + } + } + } + $db->freeResult( $res ); + return $retVal; + } + + /** + * Get an array of Title objects using this Title as a template + * Also stores the IDs in the link cache. + * + * WARNING: do not use this function on arbitrary user-supplied titles! + * On heavily-used templates it will max out the memory. + * + * @param string $options may be FOR UPDATE + * @return array the Title objects linking here + * @access public + */ + function getTemplateLinksTo( $options = '' ) { + return $this->getLinksTo( $options, 'templatelinks', 'tl' ); + } + + /** + * Get an array of Title objects referring to non-existent articles linked from this page + * + * @param string $options may be FOR UPDATE + * @return array the Title objects + * @access public + */ + function getBrokenLinksFrom( $options = '' ) { + if ( $options ) { + $db =& wfGetDB( DB_MASTER ); + } else { + $db =& wfGetDB( DB_SLAVE ); + } + + $res = $db->safeQuery( + "SELECT pl_namespace, pl_title + FROM ! + LEFT JOIN ! + ON pl_namespace=page_namespace + AND pl_title=page_title + WHERE pl_from=? + AND page_namespace IS NULL + !", + $db->tableName( 'pagelinks' ), + $db->tableName( 'page' ), + $this->getArticleId(), + $options ); + + $retVal = array(); + if ( $db->numRows( $res ) ) { + while ( $row = $db->fetchObject( $res ) ) { + $retVal[] = Title::makeTitle( $row->pl_namespace, $row->pl_title ); + } + } + $db->freeResult( $res ); + return $retVal; + } + + + /** + * Get a list of URLs to purge from the Squid cache when this + * page changes + * + * @return array the URLs + * @access public + */ + function getSquidURLs() { + return array( + $this->getInternalURL(), + $this->getInternalURL( 'action=history' ) + ); + } + + function purgeSquid() { + global $wgUseSquid; + if ( $wgUseSquid ) { + $urls = $this->getSquidURLs(); + $u = new SquidUpdate( $urls ); + $u->doUpdate(); + } + } + + /** + * Move this page without authentication + * @param Title &$nt the new page Title + * @access public + */ + function moveNoAuth( &$nt ) { + return $this->moveTo( $nt, false ); + } + + /** + * Check whether a given move operation would be valid. + * Returns true if ok, or a message key string for an error message + * if invalid. (Scarrrrry ugly interface this.) + * @param Title &$nt the new title + * @param bool $auth indicates whether $wgUser's permissions + * should be checked + * @return mixed true on success, message name on failure + * @access public + */ + function isValidMoveOperation( &$nt, $auth = true ) { + if( !$this or !$nt ) { + return 'badtitletext'; + } + if( $this->equals( $nt ) ) { + return 'selfmove'; + } + if( !$this->isMovable() || !$nt->isMovable() ) { + return 'immobile_namespace'; + } + + $oldid = $this->getArticleID(); + $newid = $nt->getArticleID(); + + if ( strlen( $nt->getDBkey() ) < 1 ) { + return 'articleexists'; + } + if ( ( '' == $this->getDBkey() ) || + ( !$oldid ) || + ( '' == $nt->getDBkey() ) ) { + return 'badarticleerror'; + } + + if ( $auth && ( + !$this->userCanEdit() || !$nt->userCanEdit() || + !$this->userCanMove() || !$nt->userCanMove() ) ) { + return 'protectedpage'; + } + + # The move is allowed only if (1) the target doesn't exist, or + # (2) the target is a redirect to the source, and has no history + # (so we can undo bad moves right after they're done). + + if ( 0 != $newid ) { # Target exists; check for validity + if ( ! $this->isValidMoveTarget( $nt ) ) { + return 'articleexists'; + } + } + return true; + } + + /** + * Move a title to a new location + * @param Title &$nt the new title + * @param bool $auth indicates whether $wgUser's permissions + * should be checked + * @return mixed true on success, message name on failure + * @access public + */ + function moveTo( &$nt, $auth = true, $reason = '' ) { + $err = $this->isValidMoveOperation( $nt, $auth ); + if( is_string( $err ) ) { + return $err; + } + + $pageid = $this->getArticleID(); + if( $nt->exists() ) { + $this->moveOverExistingRedirect( $nt, $reason ); + $pageCountChange = 0; + } else { # Target didn't exist, do normal move. + $this->moveToNewTitle( $nt, $reason ); + $pageCountChange = 1; + } + $redirid = $this->getArticleID(); + + # Fixing category links (those without piped 'alternate' names) to be sorted under the new title + $dbw =& wfGetDB( DB_MASTER ); + $categorylinks = $dbw->tableName( 'categorylinks' ); + $sql = "UPDATE $categorylinks SET cl_sortkey=" . $dbw->addQuotes( $nt->getPrefixedText() ) . + " WHERE cl_from=" . $dbw->addQuotes( $pageid ) . + " AND cl_sortkey=" . $dbw->addQuotes( $this->getPrefixedText() ); + $dbw->query( $sql, 'SpecialMovepage::doSubmit' ); + + # Update watchlists + + $oldnamespace = $this->getNamespace() & ~1; + $newnamespace = $nt->getNamespace() & ~1; + $oldtitle = $this->getDBkey(); + $newtitle = $nt->getDBkey(); + + if( $oldnamespace != $newnamespace || $oldtitle != $newtitle ) { + WatchedItem::duplicateEntries( $this, $nt ); + } + + # Update search engine + $u = new SearchUpdate( $pageid, $nt->getPrefixedDBkey() ); + $u->doUpdate(); + $u = new SearchUpdate( $redirid, $this->getPrefixedDBkey(), '' ); + $u->doUpdate(); + + # Update site_stats + if ( $this->getNamespace() == NS_MAIN and $nt->getNamespace() != NS_MAIN ) { + # Moved out of main namespace + # not viewed, edited, removing + $u = new SiteStatsUpdate( 0, 1, -1, $pageCountChange); + } elseif ( $this->getNamespace() != NS_MAIN and $nt->getNamespace() == NS_MAIN ) { + # Moved into main namespace + # not viewed, edited, adding + $u = new SiteStatsUpdate( 0, 1, +1, $pageCountChange ); + } elseif ( $pageCountChange ) { + # Added redirect + $u = new SiteStatsUpdate( 0, 0, 0, 1 ); + } else{ + $u = false; + } + if ( $u ) { + $u->doUpdate(); + } + + global $wgUser; + wfRunHooks( 'TitleMoveComplete', array( &$this, &$nt, &$wgUser, $pageid, $redirid ) ); + return true; + } + + /** + * Move page to a title which is at present a redirect to the + * source page + * + * @param Title &$nt the page to move to, which should currently + * be a redirect + * @private + */ + function moveOverExistingRedirect( &$nt, $reason = '' ) { + global $wgUseSquid; + $fname = 'Title::moveOverExistingRedirect'; + $comment = wfMsgForContent( '1movedto2', $this->getPrefixedText(), $nt->getPrefixedText() ); + + if ( $reason ) { + $comment .= ": $reason"; + } + + $now = wfTimestampNow(); + $rand = wfRandom(); + $newid = $nt->getArticleID(); + $oldid = $this->getArticleID(); + $dbw =& wfGetDB( DB_MASTER ); + $linkCache =& LinkCache::singleton(); + + # Delete the old redirect. We don't save it to history since + # by definition if we've got here it's rather uninteresting. + # We have to remove it so that the next step doesn't trigger + # a conflict on the unique namespace+title index... + $dbw->delete( 'page', array( 'page_id' => $newid ), $fname ); + + # Save a null revision in the page's history notifying of the move + $nullRevision = Revision::newNullRevision( $dbw, $oldid, $comment, true ); + $nullRevId = $nullRevision->insertOn( $dbw ); + + # Change the name of the target page: + $dbw->update( 'page', + /* SET */ array( + 'page_touched' => $dbw->timestamp($now), + 'page_namespace' => $nt->getNamespace(), + 'page_title' => $nt->getDBkey(), + 'page_latest' => $nullRevId, + ), + /* WHERE */ array( 'page_id' => $oldid ), + $fname + ); + $linkCache->clearLink( $nt->getPrefixedDBkey() ); + + # Recreate the redirect, this time in the other direction. + $mwRedir = MagicWord::get( MAG_REDIRECT ); + $redirectText = $mwRedir->getSynonym( 0 ) . ' [[' . $nt->getPrefixedText() . "]]\n"; + $redirectArticle = new Article( $this ); + $newid = $redirectArticle->insertOn( $dbw ); + $redirectRevision = new Revision( array( + 'page' => $newid, + 'comment' => $comment, + 'text' => $redirectText ) ); + $revid = $redirectRevision->insertOn( $dbw ); + $redirectArticle->updateRevisionOn( $dbw, $redirectRevision, 0 ); + $linkCache->clearLink( $this->getPrefixedDBkey() ); + + # Log the move + $log = new LogPage( 'move' ); + $log->addEntry( 'move_redir', $this, $reason, array( 1 => $nt->getPrefixedText() ) ); + + # Now, we record the link from the redirect to the new title. + # It should have no other outgoing links... + $dbw->delete( 'pagelinks', array( 'pl_from' => $newid ), $fname ); + $dbw->insert( 'pagelinks', + array( + 'pl_from' => $newid, + 'pl_namespace' => $nt->getNamespace(), + 'pl_title' => $nt->getDbKey() ), + $fname ); + + # Purge squid + if ( $wgUseSquid ) { + $urls = array_merge( $nt->getSquidURLs(), $this->getSquidURLs() ); + $u = new SquidUpdate( $urls ); + $u->doUpdate(); + } + } + + /** + * Move page to non-existing title. + * @param Title &$nt the new Title + * @private + */ + function moveToNewTitle( &$nt, $reason = '' ) { + global $wgUseSquid; + $fname = 'MovePageForm::moveToNewTitle'; + $comment = wfMsgForContent( '1movedto2', $this->getPrefixedText(), $nt->getPrefixedText() ); + if ( $reason ) { + $comment .= ": $reason"; + } + + $newid = $nt->getArticleID(); + $oldid = $this->getArticleID(); + $dbw =& wfGetDB( DB_MASTER ); + $now = $dbw->timestamp(); + $rand = wfRandom(); + $linkCache =& LinkCache::singleton(); + + # Save a null revision in the page's history notifying of the move + $nullRevision = Revision::newNullRevision( $dbw, $oldid, $comment, true ); + $nullRevId = $nullRevision->insertOn( $dbw ); + + # Rename cur entry + $dbw->update( 'page', + /* SET */ array( + 'page_touched' => $now, + 'page_namespace' => $nt->getNamespace(), + 'page_title' => $nt->getDBkey(), + 'page_latest' => $nullRevId, + ), + /* WHERE */ array( 'page_id' => $oldid ), + $fname + ); + + $linkCache->clearLink( $nt->getPrefixedDBkey() ); + + # Insert redirect + $mwRedir = MagicWord::get( MAG_REDIRECT ); + $redirectText = $mwRedir->getSynonym( 0 ) . ' [[' . $nt->getPrefixedText() . "]]\n"; + $redirectArticle = new Article( $this ); + $newid = $redirectArticle->insertOn( $dbw ); + $redirectRevision = new Revision( array( + 'page' => $newid, + 'comment' => $comment, + 'text' => $redirectText ) ); + $revid = $redirectRevision->insertOn( $dbw ); + $redirectArticle->updateRevisionOn( $dbw, $redirectRevision, 0 ); + $linkCache->clearLink( $this->getPrefixedDBkey() ); + + # Log the move + $log = new LogPage( 'move' ); + $log->addEntry( 'move', $this, $reason, array( 1 => $nt->getPrefixedText()) ); + + # Purge caches as per article creation + Article::onArticleCreate( $nt ); + + # Record the just-created redirect's linking to the page + $dbw->insert( 'pagelinks', + array( + 'pl_from' => $newid, + 'pl_namespace' => $nt->getNamespace(), + 'pl_title' => $nt->getDBkey() ), + $fname ); + + # Purge old title from squid + # The new title, and links to the new title, are purged in Article::onArticleCreate() + $this->purgeSquid(); + } + + /** + * Checks if $this can be moved to a given Title + * - Selects for update, so don't call it unless you mean business + * + * @param Title &$nt the new title to check + * @access public + */ + function isValidMoveTarget( $nt ) { + + $fname = 'Title::isValidMoveTarget'; + $dbw =& wfGetDB( DB_MASTER ); + + # Is it a redirect? + $id = $nt->getArticleID(); + $obj = $dbw->selectRow( array( 'page', 'revision', 'text'), + array( 'page_is_redirect','old_text','old_flags' ), + array( 'page_id' => $id, 'page_latest=rev_id', 'rev_text_id=old_id' ), + $fname, 'FOR UPDATE' ); + + if ( !$obj || 0 == $obj->page_is_redirect ) { + # Not a redirect + wfDebug( __METHOD__ . ": not a redirect\n" ); + return false; + } + $text = Revision::getRevisionText( $obj ); + + # Does the redirect point to the source? + # Or is it a broken self-redirect, usually caused by namespace collisions? + if ( preg_match( "/\\[\\[\\s*([^\\]\\|]*)]]/", $text, $m ) ) { + $redirTitle = Title::newFromText( $m[1] ); + if( !is_object( $redirTitle ) || + ( $redirTitle->getPrefixedDBkey() != $this->getPrefixedDBkey() && + $redirTitle->getPrefixedDBkey() != $nt->getPrefixedDBkey() ) ) { + wfDebug( __METHOD__ . ": redirect points to other page\n" ); + return false; + } + } else { + # Fail safe + wfDebug( __METHOD__ . ": failsafe\n" ); + return false; + } + + # Does the article have a history? + $row = $dbw->selectRow( array( 'page', 'revision'), + array( 'rev_id' ), + array( 'page_namespace' => $nt->getNamespace(), + 'page_title' => $nt->getDBkey(), + 'page_id=rev_page AND page_latest != rev_id' + ), $fname, 'FOR UPDATE' + ); + + # Return true if there was no history + return $row === false; + } + + /** + * Create a redirect; fails if the title already exists; does + * not notify RC + * + * @param Title $dest the destination of the redirect + * @param string $comment the comment string describing the move + * @return bool true on success + * @access public + */ + function createRedirect( $dest, $comment ) { + if ( $this->getArticleID() ) { + return false; + } + + $fname = 'Title::createRedirect'; + $dbw =& wfGetDB( DB_MASTER ); + + $article = new Article( $this ); + $newid = $article->insertOn( $dbw ); + $revision = new Revision( array( + 'page' => $newid, + 'comment' => $comment, + 'text' => "#REDIRECT [[" . $dest->getPrefixedText() . "]]\n", + ) ); + $revisionId = $revision->insertOn( $dbw ); + $article->updateRevisionOn( $dbw, $revision, 0 ); + + # Link table + $dbw->insert( 'pagelinks', + array( + 'pl_from' => $newid, + 'pl_namespace' => $dest->getNamespace(), + 'pl_title' => $dest->getDbKey() + ), $fname + ); + + Article::onArticleCreate( $this ); + return true; + } + + /** + * Get categories to which this Title belongs and return an array of + * categories' names. + * + * @return array an array of parents in the form: + * $parent => $currentarticle + * @access public + */ + function getParentCategories() { + global $wgContLang; + + $titlekey = $this->getArticleId(); + $dbr =& wfGetDB( DB_SLAVE ); + $categorylinks = $dbr->tableName( 'categorylinks' ); + + # NEW SQL + $sql = "SELECT * FROM $categorylinks" + ." WHERE cl_from='$titlekey'" + ." AND cl_from <> '0'" + ." ORDER BY cl_sortkey"; + + $res = $dbr->query ( $sql ) ; + + if($dbr->numRows($res) > 0) { + while ( $x = $dbr->fetchObject ( $res ) ) + //$data[] = Title::newFromText($wgContLang->getNSText ( NS_CATEGORY ).':'.$x->cl_to); + $data[$wgContLang->getNSText ( NS_CATEGORY ).':'.$x->cl_to] = $this->getFullText(); + $dbr->freeResult ( $res ) ; + } else { + $data = ''; + } + return $data; + } + + /** + * Get a tree of parent categories + * @param array $children an array with the children in the keys, to check for circular refs + * @return array + * @access public + */ + function getParentCategoryTree( $children = array() ) { + $parents = $this->getParentCategories(); + + if($parents != '') { + foreach($parents as $parent => $current) { + if ( array_key_exists( $parent, $children ) ) { + # Circular reference + $stack[$parent] = array(); + } else { + $nt = Title::newFromText($parent); + $stack[$parent] = $nt->getParentCategoryTree( $children + array($parent => 1) ); + } + } + return $stack; + } else { + return array(); + } + } + + + /** + * Get an associative array for selecting this title from + * the "page" table + * + * @return array + * @access public + */ + function pageCond() { + return array( 'page_namespace' => $this->mNamespace, 'page_title' => $this->mDbkeyform ); + } + + /** + * Get the revision ID of the previous revision + * + * @param integer $revision Revision ID. Get the revision that was before this one. + * @return interger $oldrevision|false + */ + function getPreviousRevisionID( $revision ) { + $dbr =& wfGetDB( DB_SLAVE ); + return $dbr->selectField( 'revision', 'rev_id', + 'rev_page=' . intval( $this->getArticleId() ) . + ' AND rev_id<' . intval( $revision ) . ' ORDER BY rev_id DESC' ); + } + + /** + * Get the revision ID of the next revision + * + * @param integer $revision Revision ID. Get the revision that was after this one. + * @return interger $oldrevision|false + */ + function getNextRevisionID( $revision ) { + $dbr =& wfGetDB( DB_SLAVE ); + return $dbr->selectField( 'revision', 'rev_id', + 'rev_page=' . intval( $this->getArticleId() ) . + ' AND rev_id>' . intval( $revision ) . ' ORDER BY rev_id' ); + } + + /** + * Compare with another title. + * + * @param Title $title + * @return bool + */ + function equals( $title ) { + // Note: === is necessary for proper matching of number-like titles. + return $this->getInterwiki() === $title->getInterwiki() + && $this->getNamespace() == $title->getNamespace() + && $this->getDbkey() === $title->getDbkey(); + } + + /** + * Check if page exists + * @return bool + */ + function exists() { + return $this->getArticleId() != 0; + } + + /** + * Should a link should be displayed as a known link, just based on its title? + * + * Currently, a self-link with a fragment and special pages are in + * this category. Special pages never exist in the database. + */ + function isAlwaysKnown() { + return $this->isExternal() || ( 0 == $this->mNamespace && "" == $this->mDbkeyform ) + || NS_SPECIAL == $this->mNamespace; + } + + /** + * Update page_touched timestamps and send squid purge messages for + * pages linking to this title. May be sent to the job queue depending + * on the number of links. Typically called on create and delete. + */ + function touchLinks() { + $u = new HTMLCacheUpdate( $this, 'pagelinks' ); + $u->doUpdate(); + + if ( $this->getNamespace() == NS_CATEGORY ) { + $u = new HTMLCacheUpdate( $this, 'categorylinks' ); + $u->doUpdate(); + } + } + + function trackbackURL() { + global $wgTitle, $wgScriptPath, $wgServer; + + return "$wgServer$wgScriptPath/trackback.php?article=" + . htmlspecialchars(urlencode($wgTitle->getPrefixedDBkey())); + } + + function trackbackRDF() { + $url = htmlspecialchars($this->getFullURL()); + $title = htmlspecialchars($this->getText()); + $tburl = $this->trackbackURL(); + + return " + + +"; + } + + /** + * Generate strings used for xml 'id' names in monobook tabs + * @return string + */ + function getNamespaceKey() { + switch ($this->getNamespace()) { + case NS_MAIN: + case NS_TALK: + return 'nstab-main'; + case NS_USER: + case NS_USER_TALK: + return 'nstab-user'; + case NS_MEDIA: + return 'nstab-media'; + case NS_SPECIAL: + return 'nstab-special'; + case NS_PROJECT: + case NS_PROJECT_TALK: + return 'nstab-project'; + case NS_IMAGE: + case NS_IMAGE_TALK: + return 'nstab-image'; + case NS_MEDIAWIKI: + case NS_MEDIAWIKI_TALK: + return 'nstab-mediawiki'; + case NS_TEMPLATE: + case NS_TEMPLATE_TALK: + return 'nstab-template'; + case NS_HELP: + case NS_HELP_TALK: + return 'nstab-help'; + case NS_CATEGORY: + case NS_CATEGORY_TALK: + return 'nstab-category'; + default: + return 'nstab-' . strtolower( $this->getSubjectNsText() ); + } + } +} +?> -- cgit v1.2.2