fCraft.ZoneCommands.ZoneRenameHandler C# (CSharp) Method

        private static void ZoneRenameHandler( Player player, Command cmd )
        {
            World playerWorld = player.World;
            if ( playerWorld == null )
                PlayerOpException.ThrowNoWorld( player );

            // make sure that both parameters are given
            string oldName = cmd.Next();
            string newName = cmd.Next();
            if ( oldName == null || newName == null ) {
                CdZoneRename.PrintUsage( player );
                return;
            }

            // make sure that the new name is valid
            if ( !World.IsValidName( newName ) ) {
                player.Message( "\"{0}\" is not a valid zone name", newName );
                return;
            }

            // find the old zone
            var zones = player.WorldMap.Zones;
            Zone oldZone = zones.Find( oldName );
            if ( oldZone == null ) {
                player.MessageNoZone( oldName );
                return;
            }

            // Check if a zone with "newName" name already exists
            Zone newZone = zones.FindExact( newName );
            if ( newZone != null && newZone != oldZone ) {
                player.Message( "A zone with the name \"{0}\" already exists.", newName );
                return;
            }

            // check if any change is needed
            string fullOldName = oldZone.Name;
            if ( fullOldName == newName ) {
                player.Message( "The zone is already named \"{0}\"", fullOldName );
                return;
            }

            // actually rename the zone
            zones.Rename( oldZone, newName );

            // announce the rename
            playerWorld.Players.Message( "&SZone \"{0}\" was renamed to \"{1}&S\" by {2}",
                                         fullOldName, oldZone.ClassyName, player.ClassyName );
            Logger.Log( LogType.UserActivity,
                        "Player {0} renamed zone \"{1}\" to \"{2}\" on world {3}",
                        player.Name, fullOldName, newName, playerWorld.Name );
        }