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
57
|
# Written by Ross Cohen
# see LICENSE.txt for license information
import os
def preserving_rename(src, dest):
# preserve whatever permissions the user set
try:
statinfo = os.stat(dest)
os.chmod(src, statinfo.st_mode)
# windows doesn't allow atomic renames to overwrite
os.remove(dest)
except OSError:
# file may be missing from the filesystem
pass
os.rename(src, dest)
return
def mdir(d):
try:
os.makedirs(d)
except OSError:
pass
def abspath(rel_path):
"Because os.path.abspath on Windows drops '...'"
parent_path, filename = os.path.split(rel_path)
if filename == '...':
return os.path.join(os.path.abspath(parent_path), filename)
return os.path.abspath(rel_path)
def subpath(local, file):
llocal = breakup(os.path.abspath(local))
lfile = breakup(abspath(file))
if lfile[:len(llocal)] != llocal:
raise ValueError
fname = ''
for d in lfile[len(llocal):]:
fname = os.path.join(fname, d)
return (lfile, fname)
def breakup(s):
def _breakup(s):
if s == '':
return []
a, b = os.path.split(s)
return _breakup(a) + [b]
drive, s = os.path.splitdrive(s)
bdrive, bsep = [], []
if drive != '':
bdrive = [drive]
bsep = [os.sep]
if s.startswith(os.sep):
bsep = [os.sep]
s = s[len(os.sep):]
return bdrive + bsep + _breakup(s)
|
