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    files = sorted([os.path.join(directory, f) for f in files if pattern.match(f)])
  else:
    if os.path.exists(full_path):
      files = [full_path]
    else:
      return []

  data = []

  if filenames:
    return files

  for file in files:
    try:
      with open(file, 'rb') as f:
        while True:
          data.append(pickle.load(f))
    except (EOFError, pickle.UnpicklingError):
      pass




  return data


cached_object_count = {}
def PickleObjectToFile(data, full_path, date_segmentation, timestamp=None, verify=False):
  """Append one pickled flight to the end of binary file.

  Args:
    data: data to pickle
    full_path: name (potentially including path) of the pickled file
    date_segmentation: boolean indicating whether the date string yyyy-mm-dd should be
      prepended to the file name in full_path based on the current date, so that
      pickled files are segmented by date.
    timestamp: if date_segmentation is True, this is used rather than system time
      to generate the file name.
    verify: boolean indicating if we should verify that the pickled file object count
      increments by one, rewriting entire pickle file if it doesn't. Note that since
      this requires reading the entire pickle file and unpickling, it should only be
      done for small files / objects.




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    files = sorted([os.path.join(directory, f) for f in files if pattern.match(f)])
  else:
    if os.path.exists(full_path):
      files = [full_path]
    else:
      return []

  data = []

  if filenames:
    return files

  for file in files:
    try:
      with open(file, 'rb') as f:
        while True:
          data.append(pickle.load(f))
    except (EOFError, pickle.UnpicklingError):
      pass
    except (UnicodeDecodeError) as e:
      Log('Process %s reading file %s gave error %s' % (
          psutil.Process(os.getpid()).name(), f, e))

  return data


cached_object_count = {}
def PickleObjectToFile(data, full_path, date_segmentation, timestamp=None, verify=False):
  """Append one pickled flight to the end of binary file.

  Args:
    data: data to pickle
    full_path: name (potentially including path) of the pickled file
    date_segmentation: boolean indicating whether the date string yyyy-mm-dd should be
      prepended to the file name in full_path based on the current date, so that
      pickled files are segmented by date.
    timestamp: if date_segmentation is True, this is used rather than system time
      to generate the file name.
    verify: boolean indicating if we should verify that the pickled file object count
      increments by one, rewriting entire pickle file if it doesn't. Note that since
      this requires reading the entire pickle file and unpickling, it should only be
      done for small files / objects.




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