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
48
49
50
51
52
53
54
55
56
|
# Copyright 2018 Ryan Dahl <ry@tinyclouds.org>
# All rights reserved. MIT License.
import os
import subprocess
def run(args, quiet=False, envs={}):
if not quiet:
print " ".join(args)
env = os.environ.copy()
for key in envs.keys():
env[key] = envs[key]
if os.name == "nt":
# Run through shell to make .bat/.cmd files work.
args = ["cmd", "/c"] + args
subprocess.check_call(args, env=env)
def remove_and_symlink(target, name, target_is_dir=False):
try:
# On Windows, directory symlink can only be removed with rmdir().
if os.name == "nt" and os.path.isdir(name):
os.rmdir(name)
else:
os.unlink(name)
except:
pass
symlink(target, name, target_is_dir)
def symlink(target, name, target_is_dir=False):
if os.name == "nt":
import ctypes
CreateSymbolicLinkW = ctypes.windll.kernel32.CreateSymbolicLinkW
CreateSymbolicLinkW.restype = ctypes.c_ubyte
CreateSymbolicLinkW.argtypes = (ctypes.c_wchar_p, ctypes.c_wchar_p,
ctypes.c_uint32)
# Replace forward slashes by backward slashes.
# Strangely it seems that this is only necessary for symlinks to files.
# Forward slashes don't cause any issues when the target is a directory.
target = target.replace("/", "\\")
flags = 0x02 # SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE
if (target_is_dir):
flags |= 0x01 # SYMBOLIC_LINK_FLAG_DIRECTORY
if not CreateSymbolicLinkW(name, target, flags):
raise ctypes.WinError()
else:
os.symlink(target, name)
def touch(fname):
if os.path.exists(fname):
os.utime(fname, None)
else:
open(fname, 'a').close()
|
