| # Copyright 2013 The Chromium Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| from file_system import FileNotFoundError, FileSystem, StatInfo |
| from future import Future |
| from path_util import IsDirectory |
| |
| |
| class EmptyDirFileSystem(FileSystem): |
| '''A FileSystem with empty directories. Useful to inject places to disable |
| features such as samples. |
| ''' |
| def Read(self, paths, skip_not_found=False): |
| result = {} |
| for path in paths: |
| if not IsDirectory(path): |
| if skip_not_found: continue |
| raise FileNotFoundError('EmptyDirFileSystem cannot read %s' % path) |
| result[path] = [] |
| return Future(value=result) |
| |
| def Refresh(self): |
| return Future(value=()) |
| |
| def Stat(self, path): |
| if not IsDirectory(path): |
| raise FileNotFoundError('EmptyDirFileSystem cannot stat %s' % path) |
| return StatInfo(0, child_versions=[]) |
| |
| def GetIdentity(self): |
| return self.__class__.__name__ |
