def to_native_string(text):
if isnewbytes(text):
return bytes.__str__(text)
if isinstance(text, native_str):
return text
# Must be Unicode...
return text.encode('utf-8')
def join(self, iterable):
errmsg = 'sequence item {0}: expected unicode string, found bytes'
for i, item in enumerate(iterable):
# Here we use type() rather than isinstance() because
# __instancecheck__ is being overridden. E.g.
# isinstance(b'abc', newbytes) is True on Py2.
if isnewbytes(item):
raise TypeError(errmsg.format(i))
return newstr(super(newstr, self).join(iterable))
def endswith(self, prefix, *args):
# Note we need the decorator above as well as the isnewbytes()
# check because prefix can be either a bytes object or e.g. a
# tuple of possible prefixes. (If it's a bytes object, each item
# in it is an int.)
if isinstance(prefix, Iterable):
for thing in prefix:
if isnewbytes(thing):
raise TypeError(self.no_convert_msg.format(type(thing)))
return super(newstr, self).endswith(prefix, *args)
def __contains__(self, key):
errmsg = "'in <string>' requires string as left operand, not {0}"
# Don't use isinstance() here because we only want to catch
# newstr, not Python 2 unicode:
if type(key) == newstr:
newkey = key
elif isinstance(key, unicode) or isinstance(key, bytes) and not isnewbytes(key):
newkey = newstr(key)
else:
raise TypeError(errmsg.format(type(key)))
return issubset(list(newkey), list(self))
def join(self, iterable):
errmsg = 'sequence item {0}: expected unicode string, found bytes'
for i, item in enumerate(iterable):
# Here we use type() rather than isinstance() because
# __instancecheck__ is being overridden. E.g.
# isinstance(b'abc', newbytes) is True on Py2.
if isnewbytes(item):
raise TypeError(errmsg.format(i))
# Support use as a staticmethod: str.join('-', ['a', 'b'])
if type(self) == newstr:
return newstr(super(newstr, self).join(iterable))
else:
return newstr(super(newstr, newstr(self)).join(iterable))
def __ne__(self, other):
if (isinstance(other, unicode) or
isinstance(other, bytes) and not isnewbytes(other)):
return super(newstr, self).__ne__(other)
else:
return True
def startswith(self, prefix, *args):
if isinstance(prefix, Iterable):
for thing in prefix:
if isnewbytes(thing):
raise TypeError(self.no_convert_msg.format(type(thing)))
return super(newstr, self).startswith(prefix, *args)
def __ne__(self, other):
if (isinstance(other, unicode) or
isinstance(other, bytes) and not isnewbytes(other)):
return super(newstr, self).__ne__(other)
else:
return True
def startswith(self, prefix, *args):
if isinstance(prefix, Iterable):
for thing in prefix:
if isnewbytes(thing):
raise TypeError(self.no_convert_msg.format(type(thing)))
return super(newstr, self).startswith(prefix, *args)
def __ge__(self, other):
if (isinstance(other, unicode)
or isinstance(other, bytes) and not isnewbytes(other)):
return super(newstr, self).__ge__(other)
raise TypeError(self.unorderable_err.format(type(other)))
def __hash__(self):
if (isinstance(self, unicode)
or isinstance(self, bytes) and not isnewbytes(self)):
return super(newstr, self).__hash__()
else:
raise NotImplementedError()
def __eq__(self, other):
if (isinstance(other, unicode)
or isinstance(other, bytes) and not isnewbytes(other)):
return super(newstr, self).__eq__(other)
else:
return NotImplemented
def __ge__(self, other):
if (isinstance(other, unicode) or
isinstance(other, bytes) and not isnewbytes(other)):
return super(newstr, self).__ge__(other)
raise TypeError(self.unorderable_err.format(type(other)))