moved rtl stylesheet to separate style section again, after all other styles to be...
[lhc/web/wiklou.git] / includes / Title.php
index 813d7ae..77b1a95 100644 (file)
@@ -58,14 +58,14 @@ class Title {
                static $trans;
                $fname = "Title::newFromText";
                wfProfileIn( $fname );
-               
+
                # Note - mixing latin1 named entities and unicode numbered
                # ones will result in a bad link.
                if( !isset( $trans ) ) {
                        global $wgInputEncoding;
                        $trans = array_flip( get_html_translation_table( HTML_ENTITIES ) );
                        if( strcasecmp( "utf-8", $wgInputEncoding ) == 0 ) {
-                           $trans = array_map( "utf8_encode", $trans );
+                               $trans = array_map( "utf8_encode", $trans );
                        }
                }
 
@@ -73,7 +73,7 @@ class Title {
                        wfDebugDieBacktrace( "Called with object instead of string." );
                }
                $text = strtr( $text, $trans );
-               
+
                $text = wfMungeToUtf8( $text );
                
                
@@ -82,9 +82,12 @@ class Title {
 
                $t = new Title();
                $t->mDbkeyform = str_replace( " ", "_", $text );
-        $t->mDefaultNamespace = $defaultNamespace;
-        
+               $t->mDefaultNamespace = $defaultNamespace;
+
                wfProfileOut( $fname );
+               if ( !is_object( $t ) ) {
+                       var_dump( debug_backtrace() );
+               }
                if( $t->secureAndSplit() ) {
                        return $t;
                } else {
@@ -235,7 +238,9 @@ class Title {
        # The URL contains $1, which is replaced by the title
        function getInterwikiLink( $key )
        {       
-               global $wgMemc, $wgDBname, $title_interwiki_cache;
+               global $wgMemc, $wgDBname;
+               static $title_interwiki_cache = array();
+
                $k = "$wgDBname:interwiki:$key";
 
                if( array_key_exists( $k, $title_interwiki_cache ) )
@@ -578,7 +583,7 @@ class Title {
        #
        /* private */ function secureAndSplit()
        {
-               global $wgLang, $wgLocalInterwiki;
+               global $wgLang, $wgLocalInterwiki, $wgCapitalLinks;
                $fname = "Title::secureAndSplit";
                wfProfileIn( $fname );
                
@@ -597,13 +602,8 @@ class Title {
                # Clean up whitespace
                #
                $t = preg_replace( "/[\\s_]+/", "_", $this->mDbkeyform );
-               if ( "_" == $t{0} ) { 
-                       $t = substr( $t, 1 ); 
-               }
-               $l = strlen( $t );
-               if ( $l && ( "_" == $t{$l-1} ) ) { 
-                       $t = substr( $t, 0, $l-1 ); 
-               }
+               $t = preg_replace( '/^_*(.*?)_*$/', '$1', $t );
+
                if ( "" == $t ) {
                        wfProfileOut( $fname );
                        return false;
@@ -626,7 +626,12 @@ class Title {
                        if ( preg_match( "/^((?:i|x|[a-z]{2,3})(?:-[a-z0-9]+)?|[A-Za-z0-9_\\x80-\\xff]+?)_*:_*(.*)$/", $t, $m ) ) {
                                #$p = strtolower( $m[1] );
                                $p = $m[1];
-                               if ( $ns = $wgLang->getNsIndex( strtolower( $p ) )) {
+                               $lowerNs = strtolower( $p );
+                               if ( $ns = Namespace::getCanonicalIndex( $lowerNs ) ) {
+                                       # Canonical namespace
+                                       $t = $m[2];
+                                       $this->mNamespace = $ns;
+                               } elseif ( $ns = $wgLang->getNsIndex( $lowerNs )) {
                                        # Ordinary namespace
                                        $t = $m[2];
                                        $this->mNamespace = $ns;
@@ -672,8 +677,10 @@ class Title {
                }
 
                # Initial capital letter
-               if( $this->mInterwiki == "") $t = $wgLang->ucfirst( $r );
-
+               if( $wgCapitalLinks && $this->mInterwiki == "") {
+                       $t = $wgLang->ucfirst( $r );
+               }
+               
                # Fill fields
                $this->mDbkeyform = $t;
                $this->mUrlform = wfUrlencode( $t );
@@ -739,5 +746,353 @@ 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;
+       }
+       
+       # 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 );
+               return true;
+       }
 }
 ?>