1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
""" This file provides some support for things like standard_c_lib and
errno access, as portable as possible
"""
import ctypes
import ctypes.util
import sys
# __________ the standard C library __________
if sys.platform == 'win32':
import _ffi
standard_c_lib = ctypes.CDLL('msvcrt', handle=_ffi.get_libc())
elif sys.platform == 'cygwin':
standard_c_lib = ctypes.CDLL(ctypes.util.find_library('cygwin'))
else:
standard_c_lib = ctypes.CDLL(ctypes.util.find_library('c'))
if sys.platform == 'win32':
standard_c_lib._errno.restype = ctypes.POINTER(ctypes.c_int)
standard_c_lib._errno.argtypes = None
def _where_is_errno():
return standard_c_lib._errno()
elif sys.platform in ('linux2', 'freebsd6'):
standard_c_lib.__errno_location.restype = ctypes.POINTER(ctypes.c_int)
standard_c_lib.__errno_location.argtypes = None
def _where_is_errno():
return standard_c_lib.__errno_location()
elif sys.platform == 'darwin' or sys.platform.startswith('freebsd'):
standard_c_lib.__error.restype = ctypes.POINTER(ctypes.c_int)
standard_c_lib.__error.argtypes = None
def _where_is_errno():
return standard_c_lib.__error()
def get_errno():
errno_p = _where_is_errno()
return errno_p.contents.value
def set_errno(value):
errno_p = _where_is_errno()
errno_p.contents.value = value
|
