/usr/lib/python2.7/dist-packages/werkzeug/_compat.py is in python-werkzeug 0.9.4+dfsg-1.1ubuntu2.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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import operator
import functools
try:
import builtins
except ImportError:
import __builtin__ as builtins
PY2 = sys.version_info[0] == 2
_identity = lambda x: x
if PY2:
unichr = unichr
text_type = unicode
string_types = (str, unicode)
integer_types = (int, long)
int_to_byte = chr
iterkeys = lambda d, *args, **kwargs: d.iterkeys(*args, **kwargs)
itervalues = lambda d, *args, **kwargs: d.itervalues(*args, **kwargs)
iteritems = lambda d, *args, **kwargs: d.iteritems(*args, **kwargs)
iterlists = lambda d, *args, **kwargs: d.iterlists(*args, **kwargs)
iterlistvalues = lambda d, *args, **kwargs: d.iterlistvalues(*args, **kwargs)
iter_bytes = lambda x: iter(x)
exec('def reraise(tp, value, tb=None):\n raise tp, value, tb')
def fix_tuple_repr(obj):
def __repr__(self):
cls = self.__class__
return '%s(%s)' % (cls.__name__, ', '.join(
'%s=%r' % (field, self[index])
for index, field in enumerate(cls._fields)
))
obj.__repr__ = __repr__
return obj
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
def native_string_result(func):
def wrapper(*args, **kwargs):
return func(*args, **kwargs).encode('utf-8')
return functools.update_wrapper(wrapper, func)
def implements_bool(cls):
cls.__nonzero__ = cls.__bool__
del cls.__bool__
return cls
from itertools import imap, izip, ifilter
range_type = xrange
from StringIO import StringIO
from cStringIO import StringIO as BytesIO
NativeStringIO = BytesIO
def make_literal_wrapper(reference):
return lambda x: x
def normalize_string_tuple(tup):
"""Normalizes a string tuple to a common type. Following Python 2
rules, upgrades to unicode are implicit.
"""
if any(isinstance(x, text_type) for x in tup):
return tuple(to_unicode(x) for x in tup)
return tup
def try_coerce_native(s):
"""Try to coerce a unicode string to native if possible. Otherwise,
leave it as unicode.
"""
try:
return str(s)
except UnicodeError:
return s
wsgi_get_bytes = _identity
def wsgi_decoding_dance(s, charset='utf-8', errors='replace'):
return s.decode(charset, errors)
def wsgi_encoding_dance(s, charset='utf-8', errors='replace'):
if isinstance(s, bytes):
return s
return s.encode(charset, errors)
def to_bytes(x, charset=sys.getdefaultencoding(), errors='strict'):
if x is None:
return None
if isinstance(x, (bytes, bytearray, buffer)):
return bytes(x)
if isinstance(x, unicode):
return x.encode(charset, errors)
raise TypeError('Expected bytes')
def to_native(x, charset=sys.getdefaultencoding(), errors='strict'):
if x is None or isinstance(x, str):
return x
return x.encode(charset, errors)
else:
unichr = chr
text_type = str
string_types = (str, )
integer_types = (int, )
iterkeys = lambda d, *args, **kwargs: iter(d.keys(*args, **kwargs))
itervalues = lambda d, *args, **kwargs: iter(d.values(*args, **kwargs))
iteritems = lambda d, *args, **kwargs: iter(d.items(*args, **kwargs))
iterlists = lambda d, *args, **kwargs: iter(d.lists(*args, **kwargs))
iterlistvalues = lambda d, *args, **kwargs: iter(d.listvalues(*args, **kwargs))
int_to_byte = operator.methodcaller('to_bytes', 1, 'big')
def iter_bytes(b):
return map(int_to_byte, b)
def reraise(tp, value, tb=None):
if value.__traceback__ is not tb:
raise value.with_traceback(tb)
raise value
fix_tuple_repr = _identity
implements_iterator = _identity
implements_to_string = _identity
implements_bool = _identity
native_string_result = _identity
imap = map
izip = zip
ifilter = filter
range_type = range
from io import StringIO, BytesIO
NativeStringIO = StringIO
def make_literal_wrapper(reference):
if isinstance(reference, text_type):
return lambda x: x
return lambda x: x.encode('latin1')
def normalize_string_tuple(tup):
"""Ensures that all types in the tuple are either strings
or bytes.
"""
tupiter = iter(tup)
is_text = isinstance(next(tupiter, None), text_type)
for arg in tupiter:
if isinstance(arg, text_type) != is_text:
raise TypeError('Cannot mix str and bytes arguments (got %s)'
% repr(tup))
return tup
try_coerce_native = _identity
def wsgi_get_bytes(s):
return s.encode('latin1')
def wsgi_decoding_dance(s, charset='utf-8', errors='replace'):
return s.encode('latin1').decode(charset, errors)
def wsgi_encoding_dance(s, charset='utf-8', errors='replace'):
if isinstance(s, bytes):
return s.decode('latin1', errors)
return s.encode(charset).decode('latin1', errors)
def to_bytes(x, charset=sys.getdefaultencoding(), errors='strict'):
if x is None:
return None
if isinstance(x, (bytes, bytearray, memoryview)):
return bytes(x)
if isinstance(x, str):
return x.encode(charset, errors)
raise TypeError('Expected bytes')
def to_native(x, charset=sys.getdefaultencoding(), errors='strict'):
if x is None or isinstance(x, str):
return x
return x.decode(charset, errors)
def to_unicode(x, charset=sys.getdefaultencoding(), errors='strict',
allow_none_charset=False):
if x is None:
return None
if not isinstance(x, bytes):
return text_type(x)
if charset is None and allow_none_charset:
return x
return x.decode(charset, errors)
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