+ wfProfileOut( $fname );
+ return true;
+ }
+
+ # Get a title object associated with the talk page of this article
+ function getTalkPage() {
+ return Title::makeTitle( Namespace::getTalk( $this->getNamespace() ), $this->getDBkey() );
+ }
+
+ # Get a title object associated with the subject page of this talk page
+ 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
+ function getLinksTo() {
+ global $wgLinkCache;
+ $id = $this->getArticleID();
+ $sql = "SELECT cur_namespace,cur_title,cur_id FROM cur,links WHERE l_from=cur_id AND l_to={$id}";
+ $res = wfQuery( $sql, DB_READ, "Title::getLinksTo" );
+ $retVal = array();
+ if ( wfNumRows( $res ) ) {
+ while ( $row = wfFetchObject( $res ) ) {
+ $titleObj = Title::makeTitle( $row->cur_namespace, $row->cur_title );
+ $wgLinkCache->addGoodLink( $row->cur_id, $titleObj->getPrefixedDBkey() );
+ $retVal[] = $titleObj;
+ }
+ }
+ wfFreeResult( $res );
+ return $retVal;
+ }
+
+ # Get an array of Title objects linking to this non-existent title
+ # Also stores the IDs in the link cache
+ function getBrokenLinksTo() {
+ global $wgLinkCache;
+ $encTitle = wfStrencode( $this->getPrefixedDBkey() );
+ $sql = "SELECT cur_namespace,cur_title,cur_id FROM brokenlinks,cur " .
+ "WHERE bl_from=cur_id AND bl_to='$encTitle'";
+ $res = wfQuery( $sql, DB_READ, "Title::getBrokenLinksTo" );
+ $retVal = array();
+ if ( wfNumRows( $res ) ) {
+ while ( $row = wfFetchObject( $res ) ) {
+ $titleObj = Title::makeTitle( $row->cur_namespace, $row->cur_title );
+ $wgLinkCache->addGoodLink( $titleObj->getPrefixedDBkey(), $row->cur_id );
+ $retVal[] = $titleObj;
+ }
+ }
+ wfFreeResult( $res );
+ return $retVal;
+ }
+
+ function getSquidURLs() {
+ return array(
+ $this->getInternalURL(),
+ $this->getInternalURL( "action=history" )
+ );
+ }
+
+ function moveNoAuth( &$nt ) {
+ return $this->moveTo( $nt, false );
+ }
+
+ # Move a title to a new location
+ # Returns true on success, message name on failure
+ # auth indicates whether wgUser's permissions should be checked
+ function moveTo( &$nt, $auth = true ) {
+ $fname = "Title::move";
+ $oldid = $this->getArticleID();
+ $newid = $nt->getArticleID();
+
+ if( !$this or !$nt ) {
+ return "badtitletext";
+ }
+
+ if ( strlen( $nt->getDBkey() ) < 1 ) {
+ return "articleexists";
+ }
+ if ( ( ! Namespace::isMovable( $this->getNamespace() ) ) ||
+ ( "" == $this->getDBkey() ) ||
+ ( "" != $this->getInterwiki() ) ||
+ ( !$oldid ) ||
+ ( ! Namespace::isMovable( $nt->getNamespace() ) ) ||
+ ( "" == $nt->getDBkey() ) ||
+ ( "" != $nt->getInterwiki() ) ) {
+ return "badarticleerror";
+ }
+
+ if ( $auth && ( !$this->userCanEdit() || !$nt->userCanEdit() ) ) {
+ 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";
+ }
+ $this->moveOverExistingRedirect( $nt );
+ } else { # Target didn't exist, do normal move.
+ $this->moveToNewTitle( $nt, $newid );
+ }
+
+ # 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( $oldid, $nt->getPrefixedDBkey() );
+ $u->doUpdate();
+ $u = new SearchUpdate( $newid, $this->getPrefixedDBkey(), "" );
+ $u->doUpdate();
+
+ return true;
+ }
+
+ # Move page to title which is presently a redirect to the source page
+
+ /* private */ function moveOverExistingRedirect( &$nt )
+ {
+ global $wgUser, $wgLinkCache, $wgUseSquid, $wgMwRedir;
+ $fname = "Title::moveOverExistingRedirect";
+ $comment = wfMsg( "1movedto2", $this->getPrefixedText(), $nt->getPrefixedText() );
+
+ $now = wfTimestampNow();
+ $won = wfInvertTimestamp( $now );
+ $newid = $nt->getArticleID();
+ $oldid = $this->getArticleID();
+
+ # Change the name of the target page:
+ wfUpdateArray(
+ /* table */ 'cur',
+ /* SET */ array(
+ 'cur_touched' => $now,
+ 'cur_namespace' => $nt->getNamespace(),
+ 'cur_title' => $nt->getDBkey()
+ ),
+ /* WHERE */ array( 'cur_id' => $oldid ),
+ $fname
+ );
+ $wgLinkCache->clearLink( $nt->getPrefixedDBkey() );
+
+ # Repurpose the old redirect. We don't save it to history since
+ # by definition if we've got here it's rather uninteresting.
+
+ $redirectText = $wgMwRedir->getSynonym( 0 ) . " [[" . $nt->getPrefixedText() . "]]\n";
+ wfUpdateArray(
+ /* table */ 'cur',
+ /* SET */ array(
+ 'cur_touched' => $now,
+ 'cur_timestamp' => $now,
+ 'inverse_timestamp' => $won,
+ 'cur_namespace' => $this->getNamespace(),
+ 'cur_title' => $this->getDBkey(),
+ 'cur_text' => $wgMwRedir->getSynonym( 0 ) . " [[" . $nt->getPrefixedText() . "]]\n",
+ 'cur_comment' => $comment,
+ 'cur_user' => $wgUser->getID(),
+ 'cur_minor_edit' => 0,
+ 'cur_counter' => 0,
+ 'cur_restrictions' => '',
+ 'cur_user_text' => $wgUser->getName(),
+ 'cur_is_redirect' => 1,
+ 'cur_is_new' => 1
+ ),
+ /* WHERE */ array( 'cur_id' => $newid ),
+ $fname
+ );
+
+ $wgLinkCache->clearLink( $this->getPrefixedDBkey() );
+
+ # Fix the redundant names for the past revisions of the target page.
+ # The redirect should have no old revisions.
+ wfUpdateArray(
+ /* table */ 'old',
+ /* SET */ array(
+ 'old_namespace' => $nt->getNamespace(),
+ 'old_title' => $nt->getDBkey(),
+ ),
+ /* WHERE */ array(
+ 'old_namespace' => $this->getNamespace(),
+ 'old_title' => $this->getDBkey(),
+ ),
+ $fname
+ );
+
+ RecentChange::notifyMove( $now, $this, $nt, $wgUser, $comment );
+
+ # Swap links
+
+ # Load titles and IDs
+ $linksToOld = $this->getLinksTo();
+ $linksToNew = $nt->getLinksTo();
+
+ # Make function to convert Titles to IDs
+ $titleToID = create_function('$t', 'return $t->getArticleID();');
+
+ # Reassign links to old title
+ if ( count( $linksToOld ) ) {
+ $sql = "UPDATE links SET l_to=$newid WHERE l_from IN (";
+ $sql .= implode( ",", array_map( $titleToID, $linksToOld ) );
+ $sql .= ")";
+ wfQuery( $sql, DB_WRITE, $fname );
+ }
+
+ # Reassign links to new title
+ if ( count( $linksToNew ) ) {
+ $sql = "UPDATE links SET l_to=$oldid WHERE l_from IN (";
+ $sql .= implode( ",", array_map( $titleToID, $linksToNew ) );
+ $sql .= ")";
+ wfQuery( $sql, DB_WRITE, $fname );
+ }
+
+ # Note: the insert below must be after the updates above!
+
+ # Now, we record the link from the redirect to the new title.
+ # It should have no other outgoing links...
+ $sql = "DELETE FROM links WHERE l_from={$newid}";
+ wfQuery( $sql, DB_WRITE, $fname );
+ $sql = "INSERT INTO links (l_from,l_to) VALUES ({$newid},{$oldid})";
+ wfQuery( $sql, DB_WRITE, $fname );
+
+ # Purge squid
+ if ( $wgUseSquid ) {
+ $urls = array_merge( $nt->getSquidURLs(), $this->getSquidURLs() );
+ $u = new SquidUpdate( $urls );
+ $u->doUpdate();
+ }
+ }
+
+ # Move page to non-existing title.
+ # Sets $newid to be the new article ID
+
+ /* private */ function moveToNewTitle( &$nt, &$newid )
+ {
+ global $wgUser, $wgLinkCache, $wgUseSquid;
+ $fname = "MovePageForm::moveToNewTitle";
+ $comment = wfMsg( "1movedto2", $this->getPrefixedText(), $nt->getPrefixedText() );
+
+ $now = wfTimestampNow();
+ $won = wfInvertTimestamp( $now );
+ $newid = $nt->getArticleID();
+ $oldid = $this->getArticleID();
+
+ # Rename cur entry
+ wfUpdateArray(
+ /* table */ 'cur',
+ /* SET */ array(
+ 'cur_touched' => $now,
+ 'cur_namespace' => $nt->getNamespace(),
+ 'cur_title' => $nt->getDBkey()
+ ),
+ /* WHERE */ array( 'cur_id' => $oldid ),
+ $fname
+ );
+
+ $wgLinkCache->clearLink( $nt->getPrefixedDBkey() );
+
+ # Insert redirct
+ wfInsertArray( 'cur', array(
+ 'cur_namespace' => $this->getNamespace(),
+ 'cur_title' => $this->getDBkey(),
+ 'cur_comment' => $comment,
+ 'cur_user' => $wgUser->getID(),
+ 'cur_user_text' => $wgUser->getName(),
+ 'cur_timestamp' => $now,
+ 'inverse_timestamp' => $won,
+ 'cur_touched' => $now,
+ 'cur_is_redirect' => 1,
+ 'cur_is_new' => 1,
+ 'cur_text' => "#REDIRECT [[" . $nt->getPrefixedText() . "]]\n" )
+ );
+ $newid = wfInsertId();
+ $wgLinkCache->clearLink( $this->getPrefixedDBkey() );
+
+ # Rename old entries
+ wfUpdateArray(
+ /* table */ 'old',
+ /* SET */ array(
+ 'old_namespace' => $nt->getNamespace(),
+ 'old_title' => $nt->getDBkey()
+ ),
+ /* WHERE */ array(
+ 'old_namespace' => $this->getNamespace(),
+ 'old_title' => $this->getDBkey()
+ ), $fname
+ );
+
+ # Miscellaneous updates
+
+ RecentChange::notifyMove( $now, $this, $nt, $wgUser, $comment );
+ Article::onArticleCreate( $nt );
+
+ # Any text links to the old title must be reassigned to the redirect
+ $sql = "UPDATE links SET l_to={$newid} WHERE l_to={$oldid}";
+ wfQuery( $sql, DB_WRITE, $fname );
+
+ # Record the just-created redirect's linking to the page
+ $sql = "INSERT INTO links (l_from,l_to) VALUES ({$newid},{$oldid})";
+ wfQuery( $sql, DB_WRITE, $fname );
+
+ # Non-existent target may have had broken links to it; these must
+ # now be removed and made into good links.
+ $update = new LinksUpdate( $oldid, $nt->getPrefixedDBkey() );
+ $update->fixBrokenLinks();
+
+ # Purge old title from squid
+ # The new title, and links to the new title, are purged in Article::onArticleCreate()
+ $titles = $nt->getLinksTo();
+ if ( $wgUseSquid ) {
+ $urls = $this->getSquidURLs();
+ foreach ( $titles as $linkTitle ) {
+ $urls[] = $linkTitle->getInternalURL();
+ }
+ $u = new SquidUpdate( $urls );
+ $u->doUpdate();
+ }
+ }
+
+ # Checks if $this can be moved to $nt
+ # Both titles must exist in the database, otherwise it will blow up
+ function isValidMoveTarget( $nt )
+ {
+ $fname = "Title::isValidMoveTarget";
+
+ # Is it a redirect?
+ $id = $nt->getArticleID();
+ $sql = "SELECT cur_is_redirect,cur_text FROM cur " .
+ "WHERE cur_id={$id}";
+ $res = wfQuery( $sql, DB_READ, $fname );
+ $obj = wfFetchObject( $res );
+
+ if ( 0 == $obj->cur_is_redirect ) {
+ # Not a redirect
+ return false;
+ }
+
+ # Does the redirect point to the source?
+ if ( preg_match( "/\\[\\[\\s*([^\\]]*)]]/", $obj->cur_text, $m ) ) {
+ $redirTitle = Title::newFromText( $m[1] );
+ if ( 0 != strcmp( $redirTitle->getPrefixedDBkey(), $this->getPrefixedDBkey() ) ) {
+ return false;
+ }
+ }
+
+ # Does the article have a history?
+ $row = wfGetArray( 'old', array( 'old_id' ), array(
+ 'old_namespace' => $nt->getNamespace(),
+ 'old_title' => $nt->getDBkey() )
+ );
+
+ # Return true if there was no history
+ return $row === false;
+ }
+
+ # Create a redirect, fails if the title already exists, does not notify RC
+ # Returns success
+ function createRedirect( $dest, $comment ) {
+ global $wgUser;
+ if ( $this->getArticleID() ) {
+ return false;
+ }
+
+ $now = wfTimestampNow();
+ $won = wfInvertTimestamp( $now );
+
+ wfInsertArray( 'cur', array(
+ 'cur_namespace' => $this->getNamespace(),
+ 'cur_title' => $this->getDBkey(),
+ 'cur_comment' => $comment,
+ 'cur_user' => $wgUser->getID(),
+ 'cur_user_text' => $wgUser->getName(),
+ 'cur_timestamp' => $now,
+ 'inverse_timestamp' => $won,
+ 'cur_touched' => $now,
+ 'cur_is_redirect' => 1,
+ 'cur_is_new' => 1,
+ 'cur_text' => "#REDIRECT [[" . $dest->getPrefixedText() . "]]\n"
+ ));
+ $newid = wfInsertId();
+ $this->resetArticleID( $newid );
+
+ # Link table
+ if ( $dest->getArticleID() ) {
+ wfInsertArray( 'links', array(
+ 'l_to' => $dest->getArticleID(),
+ 'l_from' => $newid
+ ));
+ } else {
+ wfInsertArray( 'brokenlinks', array(
+ 'bl_to' => $dest->getPrefixedDBkey(),
+ 'bl_from' => $newid
+ ));
+ }
+
+ Article::onArticleCreate( $this );