fCraft.World.DeleteOldBackups C# (CSharp) Method

        private static void DeleteOldBackups( [NotNull] DirectoryInfo directory )
        {
            if ( directory == null )
                throw new ArgumentNullException( "directory" );
            var backupList = directory.GetFiles( "*.fcm" ).OrderBy( fi => -fi.CreationTimeUtc.Ticks ).ToList();

            int maxFileCount = ConfigKey.MaxBackups.GetInt();

            if ( maxFileCount > 0 ) {
                while ( backupList.Count > maxFileCount ) {
                    FileInfo info = backupList[backupList.Count - 1];
                    backupList.RemoveAt( backupList.Count - 1 );
                    try {
                        File.Delete( info.FullName );
                    } catch ( Exception ex ) {
                        Logger.Log( LogType.Error,
                                    "Map.SaveBackup: Error occurred while trying delete old backup \"{0}\": {1}",
                                    info.FullName, ex );
                        break;
                    }
                    Logger.Log( LogType.SystemActivity,
                                "Map.SaveBackup: Deleted old backup \"{0}\"", info.Name );
                }
            }

            int maxFileSize = ConfigKey.MaxBackupSize.GetInt();

            if ( maxFileSize > 0 ) {
                while ( true ) {
                    FileInfo[] fis = directory.GetFiles();
                    long size = fis.Sum( fi => fi.Length );

                    if ( size / 1024 / 1024 > maxFileSize ) {
                        FileInfo info = backupList[backupList.Count - 1];
                        backupList.RemoveAt( backupList.Count - 1 );
                        try {
                            File.Delete( info.FullName );
                        } catch ( Exception ex ) {
                            Logger.Log( LogType.Error,
                                        "Map.SaveBackup: Error occurred while trying delete old backup \"{0}\": {1}",
                                        info.Name, ex );
                            break;
                        }
                        Logger.Log( LogType.SystemActivity,
                                    "Map.SaveBackup: Deleted old backup \"{0}\"", info.Name );
                    } else {
                        break;
                    }
                }
            }
        }