# -*- coding: utf-8 -*-
#-
# :Copyright: (c) 2015-2018, Franz Glasner. All rights reserved.
# :License:   3-clause BSD. See LICENSE.txt for details.
#-
"""Some minimal compatibility shim between Python2 and Python3

"""

from __future__ import division, absolute_import, print_function

import sys
import locale


__all__ = ["PY2",
           "text_to_native_os_str",
           "native_os_str_to_text",
           "u"]


PY2 = sys.version_info[0] <= 2


if PY2:

    _OS_ENCODING = locale.getpreferredencoding()

    def text_to_native_os_str(s, encoding=None):
        if isinstance(s, unicode):
            return s.encode(encoding or _OS_ENCODING)
        else:
            return s


    def native_os_str_to_text(s, encoding=None):
        return s.decode(encoding or _OS_ENCODING)


    def u(s, encoding="utf-8"):
        if isinstance(s, unicode):
            return s
        else:
            return s.decode(encoding)

else:

    def text_to_native_os_str(s, encoding=None):
        return s


    def native_os_str_to_text(s, encoding=None):
        return s

    def u(s, encoding="utf-8"):
        if isinstance(s, str):
            return s
        else:
            return s.decode(encoding)