code: def get(self, path):
      
      if path is None:
        return {}
  
      if not utils.check_path(path):
        self.write("Only relative paths are allowed")
        self.set_status(403)
        self.finish()
        return
  
      offset = self.get_argument("offset", default=-1)
      length = self.get_argument("length", default=-1)
      if not os.path.isfile(path):
        return {}
      data = utils.read_chunk(path, offset=offset, length=length, escape_data=True)
      self.write(json.dumps(data))
      self.finish()
docs: get method