import sys

from rpython.rlib import rposix

from pypy.interpreter.gateway import unwrap_spec

WIN32 = sys.platform == 'win32'
if WIN32:
    from rpython.rlib import rwin32


_errno_before = rposix._errno_before
_errno_after  = rposix._errno_after

def get_errno(space):
    return space.newint(rposix.get_saved_alterrno())

@unwrap_spec(errno=int)
def set_errno(space, errno):
    rposix.set_saved_alterrno(errno)

# ____________________________________________________________

@unwrap_spec(code=int)
def getwinerror(space, code=-1):
    from rpython.rlib.rwin32 import GetLastError_alt_saved, FormatErrorW
    if code == -1:
        code = GetLastError_alt_saved()
    message = FormatErrorW(code)
    return space.newtuple2(space.newint(code), space.newtext(*message))