From 50ab7cefd0a5ce8276774aa5516ab16ff430acf0 Mon Sep 17 00:00:00 2001 From: Tim Starling Date: Tue, 23 Mar 2004 10:22:49 +0000 Subject: [PATCH] page-move code moved to Title and disentangled from the user interface --- includes/SpecialMovepage.php | 307 ++++------------------------------- includes/Title.php | 306 +++++++++++++++++++++++++++++++++- 2 files changed, 336 insertions(+), 277 deletions(-) diff --git a/includes/SpecialMovepage.php b/includes/SpecialMovepage.php index c265721ff3..3fa3437f8a 100644 --- a/includes/SpecialMovepage.php +++ b/includes/SpecialMovepage.php @@ -23,15 +23,7 @@ function wfSpecialMovepage() class MovePageForm { var $oldTitle, $newTitle; # Text input - - var $ot, $nt; # Old, new Title objects - var $ons, $nns; # Namespaces - var $odt, $ndt; # Pagenames (dbkey form) - var $oft, $nft; # Full page titles (DBkey form) - var $ofx, $nfx; # Full page titles (Text form) - var $oldid, $newid; # "cur_id" field (yes, both from "cur") - var $talkmoved = 0; - + function MovePageForm() { global $wgRequest; $this->oldTitle = $wgRequest->getText( 'wpOldTitle', $wgRequest->getVal( 'target' ) ); @@ -108,111 +100,50 @@ class MovePageForm { global $wgUseSquid; $fname = "MovePageForm::doSubmit"; - $this->ot = Title::newFromText( $this->oldTitle ); - $this->nt = Title::newFromText( $this->newTitle ); - if( !$this->ot or !$this->nt ) { - $this->showForm( wfMsg( "badtitletext" ) ); - return; - } - $this->ons = $this->ot->getNamespace(); - $this->nns = $this->nt->getNamespace(); - $this->odt = wfStrencode( $this->ot->getDBkey() ); - $this->ndt = wfStrencode( $this->nt->getDBkey() ); - $this->oft = wfStrencode( $this->ot->getPrefixedDBkey() ); - $this->nft = wfStrencode( $this->nt->getPrefixedDBkey() ); - $this->ofx = $this->ot->getPrefixedText(); - $this->nfx = $this->nt->getPrefixedText(); + $ot = Title::newFromText( $this->oldTitle ); + $nt = Title::newFromText( $this->newTitle ); - $this->oldid = $this->ot->getArticleID(); - $this->newid = $this->nt->getArticleID(); - - if ( strlen( trim( $this->ndt ) ) < 1 ) { - $this->showForm( wfMsg( "articleexists" ) ); - return; - } - if ( ( ! Namespace::isMovable( $this->ons ) ) || - ( "" == $this->odt ) || - ( "" != $this->ot->getInterwiki() ) || - ( !$this->ot->userCanEdit() ) || - ( !$this->oldid ) || - ( ! Namespace::isMovable( $this->nns ) ) || - ( "" == $this->ndt ) || - ( "" != $this->nt->getInterwiki() ) || - ( !$this->nt->userCanEdit() ) ) { - $this->showForm( wfMsg( "badarticleerror" ) ); + $error = $ot->moveTo( $nt ); + if ( $error !== true ) { + $this->showForm( wfMsg( $error ) ); return; } - # 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 != $this->newid ) { # Target exists; check for validity - if ( ! $this->isValidTarget() ) { - $this->showForm( wfMsg( "articleexists" ) ); - return; - } - $this->moveOverExistingRedirect(); - } else { # Target didn't exist, do normal move. - $this->moveToNewTitle(); - } - - $this->updateWatchlists(); - - $u = new SearchUpdate( $this->oldid, $this->nt->getPrefixedDBkey() ); - $u->doUpdate(); - $u = new SearchUpdate( $this->newid, $this->ot->getPrefixedDBkey(), "" ); - $u->doUpdate(); # Move talk page if # (1) the checkbox says to, # (2) the namespaces are not themselves talk namespaces, and of course # (3) it exists. + $ons = $ot->getNamespace(); + $nns = $nt->getNamespace(); + if ( ( 1 == $_REQUEST['wpMovetalk'] ) && - ( ! Namespace::isTalk( $this->ons ) ) && - ( ! Namespace::isTalk( $this->nns ) ) ) { + ( ! Namespace::isTalk( $ons ) ) && + ( ! Namespace::isTalk( $nns ) ) ) { # get old talk page namespace - $this->ons = Namespace::getTalk( $this->ons ); + $ons = Namespace::getTalk( $ons ); # get new talk page namespace - $this->nns = Namespace::getTalk( $this->nns ); - + $nns = Namespace::getTalk( $nns ); - # grab the newer title objects - $this->ot = Title::makeTitle( $this->ons, $this->ot->getDBkey() ); - $this->nt = Title::makeTitle( $this->nns, $this->nt->getDBkey() ); - - # odt, ndt, ofx, nfx remain the same - - $this->oft = wfStrencode( $this->ot->getPrefixedDBkey() ); - $this->nft = wfStrencode( $this->nt->getPrefixedDBkey() ); - - $this->oldid = $this->ot->getArticleID(); - $this->newid = $this->nt->getArticleID(); - - if ( 0 != $this->oldid ) { - if ( 0 != $this->newid ) { - if ( $this->isValidTarget() ) { - $this->moveOverExistingRedirect(); - $this->talkmoved = 1; - } else { - $this->talkmoved = 'invalid'; - } - } else { - $this->moveToNewTitle(); - $this->talkmoved = 1; - } - $u = new SearchUpdate( $this->oldid, $this->nt->getPrefixedDBkey() ); - $u->doUpdate(); - $u = new SearchUpdate( $this->newid, $this->ot->getPrefixedDBkey(), "" ); - $u->doUpdate(); + # make talk page title objects + $ott = Title::makeTitle( $ons, $ot->getDBkey() ); + $ntt = Title::makeTitle( $nns, $nt->getDBkey() ); + + # Attempt the move + $error = $ott->moveTo( $ntt ); + if ( $error === true ) { + $talkmoved = 1; + } else { + $talkmoved = $error; } } + $titleObj = Title::makeTitle( NS_SPECIAL, "Movepage" ); $success = $titleObj->getFullURL( - "action=success&oldtitle=" . wfUrlencode( $this->ofx ) . - "&newtitle=" . wfUrlencode( $this->nfx ) . - "&talkmoved={$this->talkmoved}" ); + "action=success&oldtitle=" . wfUrlencode( $ot->getPrefixedText() ) . + "&newtitle=" . wfUrlencode( $nt->getPrefixedText() ) . + "&talkmoved={$talkmoved}" ); $wgOut->redirect( $success ); } @@ -227,193 +158,17 @@ class MovePageForm { $text = wfMsg( "pagemovedtext", $_REQUEST['oldtitle'], $_REQUEST['newtitle'] ); $wgOut->addWikiText( $text ); - if ( 1 == $_REQUEST['talkmoved'] ) { + $talkmoved = $_REQUEST['talkmoved']; + if ( 1 == $talkmoved ) { $wgOut->addHTML( "\n

" . wfMsg( "talkpagemoved" ) ); - } elseif( 'invalid' == $_REQUEST['talkmoved'] ) { + } elseif( 'articleexists' == $talkmoved ) { $wgOut->addHTML( "\n

" . wfMsg( "talkexists" ) . "" ); } else { $ot = Title::newFromURL( $_REQUEST['oldtitle'] ); if ( ! Namespace::isTalk( $ot->getNamespace() ) ) { - $wgOut->addHTML( "\n

" . wfMsg( "talkpagenotmoved" ) ); + $wgOut->addHTML( "\n

" . wfMsg( "talkpagenotmoved", wfMsg( $talkmoved ) ) ); } } } - - # Is the the existing target title valid? - - function isValidTarget() - { - $fname = "MovePageForm::isValidTarget"; - - $sql = "SELECT cur_is_redirect,cur_text FROM cur " . - "WHERE cur_id={$this->newid}"; - $res = wfQuery( $sql, DB_READ, $fname ); - $obj = wfFetchObject( $res ); - - if ( 0 == $obj->cur_is_redirect ) { return false; } - - if ( preg_match( "/\\[\\[\\s*([^\\]]*)]]/", $obj->cur_text, $m ) ) { - $rt = Title::newFromText( $m[1] ); - if ( 0 != strcmp( wfStrencode( $rt->getPrefixedDBkey() ), - $this->oft ) ) { - return false; - } - } - $sql = "SELECT old_id FROM old WHERE old_namespace={$this->nns} " . - "AND old_title='{$this->ndt}'"; - $res = wfQuery( $sql, DB_READ, $fname ); - if ( 0 != wfNumRows( $res ) ) { return false; } - - return true; - } - - # Move page to title which is presently a redirect to the source - # page. Handling link tables here is tricky. - - function moveOverExistingRedirect() - { - global $wgUser, $wgLinkCache, $wgUseSquid; - $fname = "MovePageForm::moveOverExistingRedirect"; - $mt = wfMsg( "movedto" ); - - # Change the name of the target page: - $now = wfTimestampNow(); - $won = wfInvertTimestamp( $now ); - $sql = "UPDATE cur SET cur_touched='{$now}'," . - "cur_namespace={$this->nns},cur_title='{$this->ndt}' " . - "WHERE cur_id={$this->oldid}"; - wfQuery( $sql, DB_WRITE, $fname ); - $wgLinkCache->clearLink( $this->nft ); - - # Repurpose the old redirect. We don't save it to history since - # by definition if we've got here it's rather uninteresting. - $sql = "UPDATE cur SET cur_touched='{$now}',cur_timestamp='{$now}',inverse_timestamp='${won}'," . - "cur_namespace={$this->ons},cur_title='{$this->odt}'," . - "cur_text='#REDIRECT [[{$this->nft}]]\n',cur_comment='" . - "{$mt} \\\"{$this->nft}\\\"',cur_user='" . $wgUser->getID() . - "',cur_minor_edit=0,cur_counter=0,cur_restrictions=''," . - "cur_user_text='" . wfStrencode( $wgUser->getName() ) . "'," . - "cur_is_redirect=1,cur_is_new=0 WHERE cur_id={$this->newid}"; - wfQuery( $sql, DB_WRITE, $fname ); - $wgLinkCache->clearLink( $this->oft ); - - # Fix the redundant names for the past revisions of the target page. - # The redirect should have no old revisions. - $sql = "UPDATE old SET " . - "old_namespace={$this->nns},old_title='{$this->ndt}' WHERE " . - "old_namespace={$this->ons} AND old_title='{$this->odt}'"; - wfQuery( $sql, DB_WRITE, $fname ); - - RecentChange::notifyMove( $now, $this->ot, $this->nt, $wgUser, $mt ); - - # Swap links. Using MAXINT as a temp; if there's ever an article - # with id 4294967295, this will fail, but I think that's pretty safe - - # FIXME: LOCK TABLE - # Reassign links to the old title to LIMBO - $sql = "UPDATE links SET l_to=4294967295 WHERE l_to={$this->oldid}"; - wfQuery( $sql, DB_WRITE, $fname ); - - # Reassign links to the new title to the old title - $sql = "UPDATE links SET l_to={$this->oldid} WHERE l_to={$this->newid}"; - wfQuery( $sql, DB_WRITE, $fname ); - - # Reassign links from LIMBO to the new title. Ah, clear as mud! - $sql = "UPDATE links SET l_to={$this->newid} WHERE l_to=4294967295"; - 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... - $sql = "DELETE FROM links WHERE l_from={$this->newid}"; - wfQuery( $sql, DB_WRITE, $fname ); - $sql = "INSERT INTO links (l_from,l_to) VALUES ({$this->newid},{$this->oldid})"; - wfQuery( $sql, DB_WRITE, $fname ); - - # Purge squid - if ( $wgUseSquid ) { - $urls = array_merge( $this->nt->getSquidURLs(), $this->ot->getSquidURLs() ); - $u = new SquidUpdate( $urls ); - $u->doUpdate(); - } - } - - # Move page to non-existing title. - - function moveToNewTitle() - { - global $wgUser, $wgLinkCache, $wgUseSquid; - $fname = "MovePageForm::moveToNewTitle"; - $mt = wfMsg( "movedto" ); - - $now = wfTimestampNow(); - $won = wfInvertTimestamp( $now ); - $sql = "UPDATE cur SET cur_touched='{$now}'," . - "cur_namespace={$this->nns},cur_title='{$this->ndt}' " . - "WHERE cur_id={$this->oldid}"; - wfQuery( $sql, DB_WRITE, $fname ); - $wgLinkCache->clearLink( $this->nft ); - - $comment = "{$mt} \"{$this->nft}\""; - $encComment = wfStrencode( $comment ); - $common = "{$this->ons},'{$this->odt}'," . - "'$encComment','" .$wgUser->getID() . "','" . - wfStrencode( $wgUser->getName() ) ."','{$now}'"; - $sql = "INSERT INTO cur (cur_namespace,cur_title," . - "cur_comment,cur_user,cur_user_text,cur_timestamp,inverse_timestamp," . - "cur_touched,cur_text,cur_is_redirect,cur_is_new) " . - "VALUES ({$common},'{$won}','{$now}','#REDIRECT [[{$this->nft}]]\n',1,1)"; - wfQuery( $sql, DB_WRITE, $fname ); - $this->newid = wfInsertId(); - $wgLinkCache->clearLink( $this->oft ); - - $sql = "UPDATE old SET " . - "old_namespace={$this->nns},old_title='{$this->ndt}' WHERE " . - "old_namespace={$this->ons} AND old_title='{$this->odt}'"; - wfQuery( $sql, DB_WRITE, $fname ); - - RecentChange::notifyMove( $now, $this->ot, $this->nt, $wgUser, $comment ); - Article::onArticleCreate( $this->nt ); - - # Any text links to the old title must be reassigned to the redirect - $sql = "UPDATE links SET l_to={$this->newid} WHERE l_to={$this->oldid}"; - wfQuery( $sql, DB_WRITE, $fname ); - - # Record the just-created redirect's linking to the page - $sql = "INSERT INTO links (l_from,l_to) VALUES ({$this->newid},{$this->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( $this->oldid, $this->nft ); - $update->fixBrokenLinks(); - - # Purge old title from squid - # The new title, and links to the new title, are purged in Article::onArticleCreate() - $titles = $this->nt->getLinksTo(); - if ( $wgUseSquid ) { - $urls = $this->ot->getSquidURLs(); - foreach ( $titles as $linkTitle ) { - $urls[] = $linkTitle->getInternalURL(); - } - $u = new SquidUpdate( $urls ); - $u->doUpdate(); - } - } - - function updateWatchlists() - { - $oldnamespace = $this->ons & ~1; - $newnamespace = $this->nns & ~1; - $oldtitle = $this->odt; - $newtitle = $this->ndt; - - if( $oldnamespace == $newnamespace and $oldtitle == $newtitle ) - return; - - WatchedItem::duplicateEntries( $this->ot, $this->nt ); - } - } ?> diff --git a/includes/Title.php b/includes/Title.php index 813d7ae719..3de57d4924 100644 --- a/includes/Title.php +++ b/includes/Title.php @@ -597,7 +597,7 @@ class Title { # Clean up whitespace # $t = preg_replace( "/[\\s_]+/", "_", $this->mDbkeyform ); - if ( "_" == $t{0} ) { + if ( "_" == @$t{0} ) { $t = substr( $t, 1 ); } $l = strlen( $t ); @@ -739,5 +739,309 @@ class Title { $this->getInternalURL( "action=history" ) ); } + + function moveNoAuth( &$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; + } } ?> -- 2.20.1