Class IsoFS

src/backend/IsoFS.ts:1156–1388

 * * Microsoft Joliet and Rock Ridge extensions to the ISO9660 standard
 */
export default class IsoFS extends SynchronousFileSystem implements FileSystem {
  public static readonly Name = "IsoFS";

  public static readonly Options: FileSystemOptions = {
    data: {
      type: "object",
      description: "The ISO file in a buffer",
      validator: bufferValidator
    }
  };

  /**
   * Creates an IsoFS instance with the given options.
   */
  public static Create(opts: IsoFSOptions, cb: BFSCallback<IsoFS>): void {
    let fs: IsoFS | undefined;
    let e: ApiError | undefined;
    try {
      fs = new IsoFS(opts.data, opts.name, false);
    } catch (e) {
      e = e;
    } finally {
      cb(e, fs);
    }
  }
  public static isAvailable(): boolean {
    return true;
  }

  private _data: Buffer;
  private _pvd: PrimaryOrSupplementaryVolumeDescriptor;
  private _root: DirectoryRecord;
  private _name: string;

  /**
   * **Deprecated. Please use IsoFS.Create() method instead.**
   *
   * Constructs a read-only file system from the given ISO.
   * @param data The ISO file in a buffer.
   * @param name The name of the ISO (optional; used for debug messages / identification via getName()).
   */
  constructor(data: Buffer, name: string = "", deprecateMsg = true) {
    super();
    this._data = data;
    deprecationMessage(deprecateMsg, IsoFS.Name, {data: "ISO data as a Buffer", name: name});
    // Skip first 16 sectors.
    let vdTerminatorFound = false;
    let i = 16 * 2048;
    const candidateVDs = new Array<PrimaryOrSupplementaryVolumeDescriptor>();
    while (!vdTerminatorFound) {
      const slice = data.slice(i);
      const vd = new VolumeDescriptor(slice);
      switch (vd.type()) {
        case VolumeDescriptorTypeCode.PrimaryVolumeDescriptor:
          candidateVDs.push(new PrimaryVolumeDescriptor(slice));
          break;
        case VolumeDescriptorTypeCode.SupplementaryVolumeDescriptor:
          candidateVDs.push(new SupplementaryVolumeDescriptor(slice));