def GetFileEntryByPathSpec(self, path_spec):
    """Retrieves a file entry for a path specification.

    Args:
      path_spec: a path specification (instance of PathSpec).

    Returns:
      A file entry (instance of vfs.TARFileEntry) or None.
    """
    tar_info = None
    location = getattr(path_spec, u'location', None)

    if (location is None or
        not location.startswith(self.LOCATION_ROOT)):
      return

    if len(location) == 1:
      return dfvfs.vfs.tar_file_entry.TARFileEntry(
          self._resolver_context, self, path_spec, is_root=True,
          is_virtual=True)

    try:
      tar_info = self._tar_file.getmember(location[1:])
    except __HOLE__:
      pass

    if tar_info is None:
      return
    return dfvfs.vfs.tar_file_entry.TARFileEntry(
        self._resolver_context, self, path_spec, tar_info=tar_info)
dataset/ETHPy150Open log2timeline/dfvfs/dfvfs/vfs/tar_file_system.py/TARFileSystem.GetFileEntryByPathSpec