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#-*-coding:utf-8-*-
# config.py
# Copyright (C) 2008, 2009 Michael Trier (mtrier@gmail.com) and contributors
#
# This module is part of GitPython and is released under
# the BSD License: http://www.opensource.org/licenses/bsd-license.php
"""utilities to help provide compatibility with python 3"""
# flake8: noqa
import sys
import six
from gitdb.utils.compat import (
PY3,
xrange,
MAXSIZE,
izip,
)
from gitdb.utils.encoding import (
string_types,
text_type,
force_bytes,
force_text
)
defenc = sys.getdefaultencoding()
if PY3:
import io
FileType = io.IOBase
def byte_ord(b):
return b
def bchr(n):
return bytes([n])
def mviter(d):
return d.values()
unicode = str
else:
FileType = file
# usually, this is just ascii, which might not enough for our encoding needs
# Unless it's set specifically, we override it to be utf-8
if defenc == 'ascii':
defenc = 'utf-8'
byte_ord = ord
bchr = chr
unicode = unicode
def mviter(d):
return d.itervalues()
PRE_PY27 = sys.version_info < (2, 7)
def safe_decode(s):
"""Safely decodes a binary string to unicode"""
if isinstance(s, six.text_type):
return s
elif isinstance(s, six.binary_type):
if PRE_PY27:
return s.decode(defenc) # we're screwed
else:
return s.decode(defenc, errors='replace')
raise TypeError('Expected bytes or text, but got %r' % (s,))
def with_metaclass(meta, *bases):
"""copied from https://github.com/Byron/bcore/blob/master/src/python/butility/future.py#L15"""
class metaclass(meta):
__call__ = type.__call__
__init__ = type.__init__
def __new__(cls, name, nbases, d):
if nbases is None:
return type.__new__(cls, name, (), d)
# There may be clients who rely on this attribute to be set to a reasonable value, which is why
# we set the __metaclass__ attribute explicitly
if not PY3 and '___metaclass__' not in d:
d['__metaclass__'] = meta
# end
return meta(name, bases, d)
# end
# end metaclass
return metaclass(meta.__name__ + 'Helper', None, {})
# end handle py2