You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
47 lines
1.5 KiB
47 lines
1.5 KiB
4 months ago
|
#
|
||
|
|
# Copyright 2017 - The Android Open Source Project
|
||
|
|
#
|
||
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
||
|
|
# you may not use this file except in compliance with the License.
|
||
|
|
# You may obtain a copy of the License at
|
||
|
|
#
|
||
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
||
|
|
#
|
||
|
|
# Unless required by applicable law or agreed to in writing, software
|
||
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
||
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||
|
|
# See the License for the specific language governing permissions and
|
||
|
|
# limitations under the License.
|
||
|
|
|
||
|
|
import os
|
||
|
|
|
||
|
|
|
||
|
|
def SaveAndClearEnvVars(var_name_list):
|
||
|
|
"""Saves and clears the values of existing environment variables.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
var_name_list: a list of strings where each string is the environment
|
||
|
|
variable name.
|
||
|
|
|
||
|
|
Returns:
|
||
|
|
a dict where the key is an environment variable and the value is the
|
||
|
|
saved environment variable value.
|
||
|
|
"""
|
||
|
|
env_vars = {}
|
||
|
|
for var_name in var_name_list:
|
||
|
|
if var_name in os.environ:
|
||
|
|
env_vars[var_name] = os.environ[var_name]
|
||
|
|
os.environ[var_name] = ""
|
||
|
|
return env_vars
|
||
|
|
|
||
|
|
|
||
|
|
def RestoreEnvVars(env_vars):
|
||
|
|
"""Restores the values of existing environment variables.
|
||
|
|
|
||
|
|
Args:
|
||
|
|
env_vars: a dict where the key is an environment variable and
|
||
|
|
the value is the environment variable value to set.
|
||
|
|
"""
|
||
|
|
for var_name in env_vars:
|
||
|
|
os.environ[var_name] = env_vars[var_name]
|