blob: 4e5aa2a6b3ad4414b10c374325dbd2c7ed5663e5 (
plain)
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
44
45
46
47
|
# Copyright 2012 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
try:
import ctypes
import ctypes.util
except ImportError:
ctypes = None
else:
try:
ctypes.cdll
except AttributeError:
ctypes = None
_library_names = {}
def find_library(name):
"""
Calls ctype.util.find_library() if the ctypes module is available,
and otherwise returns None. Results are cached for future invocations.
"""
filename = _library_names.get(name)
if filename is None:
if ctypes is not None:
filename = ctypes.util.find_library(name)
if filename is None:
filename = False
_library_names[name] = filename
if filename is False:
return None
return filename
_library_handles = {}
def LoadLibrary(name):
"""
Calls ctypes.cdll.LoadLibrary(name) if the ctypes module is available,
and otherwise returns None. Results are cached for future invocations.
"""
handle = _library_handles.get(name)
if handle is None and ctypes is not None:
handle = ctypes.cdll.LoadLibrary(name)
_library_handles[name] = handle
return handle
|
