chrome/common/extensions/docs/server2/empty_dir_file_system.py

   1 # Copyright 2013 The Chromium Authors. All rights reserved.
   2 # Use of this source code is governed by a BSD-style license that can be
   3 # found in the LICENSE file.
   4
   5 from file_system import FileNotFoundError, FileSystem, StatInfo
   6 from future import Future
   7
   8 class EmptyDirFileSystem(FileSystem):
   9   '''A FileSystem with empty directories. Useful to inject places to disable
  10   features such as samples.
  11   '''
  12   def Read(self, paths):
  13     result = {}
  14     for path in paths:
  15       if not path.endswith('/'):
  16         raise FileNotFoundError('EmptyDirFileSystem cannot read %s' % path)
  17       result[path] = []
  18     return Future(value=result)
  19
  20   def Refresh(self):
  21     return Future(value=())
  22
  23   def Stat(self, path):
  24     if not path.endswith('/'):
  25       raise FileNotFoundError('EmptyDirFileSystem cannot stat %s' % path)
  26     return StatInfo(0, child_versions=[])
  27
  28   def GetIdentity(self):
  29     return self.__class__.__name__