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# -*- coding: utf-8 -*-
#
# (c) 2018, Toshio Kuratomi <a.badger@gmail.com>
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
#
# Note that the original author of this, Toshio Kuratomi, is trying to submit this to six. If
# successful, the code in six will be available under six's more liberal license:
# https://mail.python.org/pipermail/python-porting/2018-July/000539.html
# Make coding more python3-ish
from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
import os
import sys
from collections.abc import MutableMapping
from ansible.module_utils.six import PY3
from ansible.module_utils._text import to_bytes, to_text
__all__ = ('environ',)
class _TextEnviron(MutableMapping):
"""
Utility class to return text strings from the environment instead of byte strings
Mimics the behaviour of os.environ on Python3
"""
def __init__(self, env=None, encoding=None):
if env is None:
env = os.environ
self._raw_environ = env
self._value_cache = {}
# Since we're trying to mimic Python3's os.environ, use sys.getfilesystemencoding()
# instead of utf-8
if encoding is None:
# Since we're trying to mimic Python3's os.environ, use sys.getfilesystemencoding()
# instead of utf-8
self.encoding = sys.getfilesystemencoding()
else:
self.encoding = encoding
def __delitem__(self, key):
del self._raw_environ[key]
def __getitem__(self, key):
value = self._raw_environ[key]
if PY3:
return value
# Cache keys off of the undecoded values to handle any environment variables which change
# during a run
if value not in self._value_cache:
self._value_cache[value] = to_text(value, encoding=self.encoding,
nonstring='passthru', errors='surrogate_or_strict')
return self._value_cache[value]
def __setitem__(self, key, value):
self._raw_environ[key] = to_bytes(value, encoding=self.encoding, nonstring='strict',
errors='surrogate_or_strict')
def __iter__(self):
return self._raw_environ.__iter__()
def __len__(self):
return len(self._raw_environ)
environ = _TextEnviron(encoding='utf-8')
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