1# Copyright 2014 Google Inc. All rights reserved. 2# 3# Licensed under the Apache License, Version 2.0 (the "License"); 4# you may not use this file except in compliance with the License. 5# You may obtain a copy of the License at 6# 7# http://www.apache.org/licenses/LICENSE-2.0 8# 9# Unless required by applicable law or agreed to in writing, software 10# distributed under the License is distributed on an "AS IS" BASIS, 11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12# See the License for the specific language governing permissions and 13# limitations under the License. 14 15import fileinput 16import os 17import shutil 18import sys 19import tempfile 20 21 22if sys.version_info[0] < 3: 23 # pylint: disable=redefined-builtin 24 str = unicode 25 26 27class Host(object): 28 def __init__(self): 29 self.stdin = sys.stdin 30 self.stdout = sys.stdout 31 self.stderr = sys.stderr 32 33 def chdir(self, *comps): 34 return os.chdir(self.join(*comps)) 35 36 def fileinput(self, files=None): 37 if not files: 38 return self.stdin.readlines() 39 return fileinput.input(files) 40 41 def getcwd(self): 42 return os.getcwd() 43 44 def join(self, *comps): 45 return os.path.join(*comps) 46 47 def mkdtemp(self, **kwargs): 48 return tempfile.mkdtemp(**kwargs) 49 50 def print_(self, msg=u'', end=u'\n', stream=None): 51 stream = stream or self.stdout 52 stream.write(str(msg) + end) 53 stream.flush() 54 55 def rmtree(self, path): 56 shutil.rmtree(path, ignore_errors=True) 57 58 def write_text_file(self, path, contents): 59 with open(path, 'wb') as f: 60 f.write(contents.encode('utf8')) 61