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# -*- coding: utf-8 -*-
"""
flask_script._compat
~~~~~~~~~~~~~~~~~~~~
Some py2/py3 compatibility support based on a stripped down
version of six so we don't have to depend on a specific version
of it.
:copyright: (c) 2013 by Armin Ronacher.
:license: BSD, see LICENSE for more details.
"""
import sys
PY2 = sys.version_info[0] == 2
PYPY = hasattr(sys, 'pypy_translation_info')
_identity = lambda x: x
if not PY2:
unichr = chr
range_type = range
text_type = str
string_types = (str, )
integer_types = (int, )
iterkeys = lambda d: iter(d.keys())
itervalues = lambda d: iter(d.values())
iteritems = lambda d: iter(d.items())
import pickle
from io import BytesIO, StringIO
NativeStringIO = StringIO
def reraise(tp, value, tb=None):
if value.__traceback__ is not tb:
raise value.with_traceback(tb)
raise value
ifilter = filter
imap = map
izip = zip
intern = sys.intern
implements_iterator = _identity
implements_to_string = _identity
encode_filename = _identity
get_next = lambda x: x.__next__
input = input
else:
unichr = unichr
text_type = unicode
range_type = xrange
string_types = (str, unicode)
integer_types = (int, long)
iterkeys = lambda d: d.iterkeys()
itervalues = lambda d: d.itervalues()
iteritems = lambda d: d.iteritems()
import cPickle as pickle
from cStringIO import StringIO as BytesIO, StringIO
NativeStringIO = BytesIO
exec('def reraise(tp, value, tb=None):\n raise tp, value, tb')
from itertools import imap, izip, ifilter
intern = intern
def implements_iterator(cls):
cls.next = cls.__next__
del cls.__next__
return cls
def implements_to_string(cls):
cls.__unicode__ = cls.__str__
cls.__str__ = lambda x: x.__unicode__().encode('utf-8')
return cls
get_next = lambda x: x.next
def encode_filename(filename):
if isinstance(filename, unicode):
return filename.encode('utf-8')
return filename
input = raw_input
def with_metaclass(meta, *bases):
# This requires a bit of explanation: the basic idea is to make a
# dummy metaclass for one level of class instantiation that replaces
# itself with the actual metaclass. Because of internal type checks
# we also need to make sure that we downgrade the custom metaclass
# for one level to something closer to type (that's why __call__ and
# __init__ comes back from type etc.).
#
# This has the advantage over six.with_metaclass in that it does not
# introduce dummy classes into the final MRO.
class metaclass(meta):
__call__ = type.__call__
__init__ = type.__init__
def __new__(cls, name, this_bases, d):
if this_bases is None:
return type.__new__(cls, name, (), d)
return meta(name, bases, d)
return metaclass('temporary_class', None, {})
try:
from urllib.parse import quote_from_bytes as url_quote
except ImportError:
from urllib import quote as url_quote
|
