# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You 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.
# Libcloud Python 2.x and 3.x compatibility layer
# Some methods below are taken from Django PYK3 port which is licensed under 3
# clause BSD license
# https://bitbucket.org/loewis/django-3k
# pylint: skip-file
import sys
import types
DEFAULT_LXML = False
try:
if DEFAULT_LXML:
from lxml import etree as ET
else:
from xml.etree import ElementTree as ET
except ImportError:
from xml.etree import ElementTree as ET
PY2 = sys.version_info[0] == 2
PY3 = sys.version_info[0] == 3
PY2_pre_279 = PY2 and sys.version_info < (2, 7, 9)
PY2 = False
PY27 = False
PY3 = False
if (2, 0) <= sys.version_info < (3, 0):
PY2 = True
if (2, 7) <= sys.version_info < (2, 8):
PY27 = True
PY3 = True
if PY3:
import base64
import urllib
import urllib as urllib2
import http.client as httplib
# pylint: disable=no-name-in-module
import urllib.parse as urlparse
import xmlrpc.client as xmlrpclib
from io import StringIO
from os.path import relpath
from urllib.parse import quote as urlquote
from urllib.parse import unquote as urlunquote
from urllib.parse import urlencode as urlencode
if sys.version_info >= (3, 5, 0):
from importlib import reload
else:
from imp import reload
from builtins import next, bytes
parse_qs = urlparse.parse_qs
parse_qsl = urlparse.parse_qsl
basestring = str
[docs] def method_type(callable, instance, klass):
return types.MethodType(callable, instance or klass())
[docs] def b(s):
if isinstance(s, str):
return s.encode("utf-8")
elif isinstance(s, bytes):
return s
elif isinstance(s, int):
return bytes([s])
else:
raise TypeError("Invalid argument {!r} for b()".format(s))
[docs] def ensure_string(s):
if isinstance(s, str):
return s
elif isinstance(s, bytes):
return s.decode("utf-8")
else:
raise TypeError("Invalid argument {!r} for ensure_string()".format(s))
def byte(n):
# assume n is a Latin-1 string of length 1
return ord(n)
_real_unicode = str
u = str
def bchr(s):
"""Take an integer and make a 1-character byte string."""
return bytes([s])
def dictvalues(d):
return list(d.values())
[docs] def tostring(node):
return ET.tostring(node, encoding="unicode")
def hexadigits(s):
# s needs to be a byte string.
return [format(x, "02x") for x in s]
if sys.version_info >= (3, 1, 0):
# encodestring and decodestring has been deprecated since 3.1.0
def base64_encode_string(*args, **kwargs):
return base64.encodebytes(*args, **kwargs) # NOQA
def base64_decode_string(*args, **kwargs):
return base64.decodebytes(*args, **kwargs) # NOQA
else:
def base64_encode_string(*args, **kwargs):
return base64.encodestring(*args, **kwargs)
def base64_decode_string(*args, **kwargs):
return base64.decodestring(*args, **kwargs)
def assertRaisesRegex(self, *args, **kwargs):
import unittest
if not isinstance(self, unittest.TestCase):
raise ValueError(
'First argument "self" needs to be an instance ' "of unittest.TestCase"
)
return getattr(self, "assertRaisesRegex")(*args, **kwargs)
def assertRegex(self, *args, **kwargs):
import unittest
if not isinstance(self, unittest.TestCase):
raise ValueError(
'First argument "self" needs to be an instance ' "of unittest.TestCase"
)
return getattr(self, "assertRegex")(*args, **kwargs)
else:
import base64 # NOQA
import urllib # NOQA
from urllib import quote as _urlquote # NOQA
from urllib import unquote as urlunquote # NOQA
from urllib import urlencode as urlencode # NOQA
import httplib # NOQA
import urllib2 # NOQA
import urlparse # NOQA
import xmlrpclib # NOQA
from StringIO import StringIO # NOQA
from __builtin__ import reload # NOQA
parse_qs = urlparse.parse_qs
parse_qsl = urlparse.parse_qsl
from os.path import relpath # NOQA
# Save the real value of unicode because urlquote needs it to tell the
# difference between a unicode string and a byte string.
_real_unicode = unicode # NOQA
basestring = unicode = str
method_type = types.MethodType
b = bytes = ensure_string = str
u = unicode
[docs] def bchr(s):
"""Take an integer and make a 1-character byte string."""
return chr(s)
_default_value_next = object()
def next(iterator, default=_default_value_next):
try:
return iterator.next()
except StopIteration:
if default is _default_value_next:
raise
return default
[docs] def dictvalues(d):
return d.values()
tostring = ET.tostring
def urlquote(s, safe="/"):
if isinstance(s, _real_unicode):
# Pretend to be py3 by encoding the URI automatically.
s = s.encode("utf8")
return _urlquote(s, safe)
[docs] def hexadigits(s):
# s needs to be a string.
return [x.encode("hex") for x in s]
[docs] def base64_encode_string(*args, **kwargs):
return base64.encodestring(*args, **kwargs)
[docs] def base64_decode_string(*args, **kwargs):
return base64.decodestring(*args, **kwargs)
[docs] def assertRaisesRegex(self, *args, **kwargs):
import unittest
if not isinstance(self, unittest.TestCase):
raise ValueError(
'First argument "self" needs to be an instance ' "of unittest.TestCase"
)
return getattr(self, "assertRaisesRegex")(*args, **kwargs)
[docs] def assertRegex(self, *args, **kwargs):
import unittest
if not isinstance(self, unittest.TestCase):
raise ValueError(
'First argument "self" needs to be an instance ' "of unittest.TestCase"
)
return getattr(self, "assertRegex")(*args, **kwargs)