author | Deepak Modgil <Deepak.Modgil@Nokia.com> |
Fri, 03 Apr 2009 17:19:34 +0100 | |
changeset 0 | ae805ac0140d |
permissions | -rw-r--r-- |
0
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
1 |
# Module 'ntpath' -- common operations on WinNT/Win95 pathnames |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
2 |
"""Common pathname manipulations, WindowsNT/95 version. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
3 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
4 |
Instead of importing this module directly, import os and refer to this |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
5 |
module as os.path. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
6 |
""" |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
7 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
8 |
import os |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
9 |
import stat |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
10 |
import sys |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
11 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
12 |
__all__ = ["normcase","isabs","join","splitdrive","split","splitext", |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
13 |
"basename","dirname","commonprefix","getsize","getmtime", |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
14 |
"getatime","getctime", "islink","exists","lexists","isdir","isfile", |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
15 |
"ismount","walk","expanduser","expandvars","normpath","abspath", |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
16 |
"splitunc","curdir","pardir","sep","pathsep","defpath","altsep", |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
17 |
"extsep","devnull","realpath","supports_unicode_filenames"] |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
18 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
19 |
# strings representing various path-related bits and pieces |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
20 |
curdir = '.' |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
21 |
pardir = '..' |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
22 |
extsep = '.' |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
23 |
sep = '\\' |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
24 |
pathsep = ';' |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
25 |
altsep = '/' |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
26 |
defpath = '.;C:\\bin' |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
27 |
if 'ce' in sys.builtin_module_names: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
28 |
defpath = '\\Windows' |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
29 |
elif 'os2' in sys.builtin_module_names: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
30 |
# OS/2 w/ VACPP |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
31 |
altsep = '/' |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
32 |
devnull = 'nul' |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
33 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
34 |
# Normalize the case of a pathname and map slashes to backslashes. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
35 |
# Other normalizations (such as optimizing '../' away) are not done |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
36 |
# (this is done by normpath). |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
37 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
38 |
def normcase(s): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
39 |
"""Normalize case of pathname. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
40 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
41 |
Makes all characters lowercase and all slashes into backslashes.""" |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
42 |
return s.replace("/", "\\").lower() |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
43 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
44 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
45 |
# Return whether a path is absolute. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
46 |
# Trivial in Posix, harder on the Mac or MS-DOS. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
47 |
# For DOS it is absolute if it starts with a slash or backslash (current |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
48 |
# volume), or if a pathname after the volume letter and colon / UNC resource |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
49 |
# starts with a slash or backslash. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
50 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
51 |
def isabs(s): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
52 |
"""Test whether a path is absolute""" |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
53 |
s = splitdrive(s)[1] |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
54 |
return s != '' and s[:1] in '/\\' |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
55 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
56 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
57 |
# Join two (or more) paths. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
58 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
59 |
def join(a, *p): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
60 |
"""Join two or more pathname components, inserting "\\" as needed""" |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
61 |
path = a |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
62 |
for b in p: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
63 |
b_wins = 0 # set to 1 iff b makes path irrelevant |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
64 |
if path == "": |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
65 |
b_wins = 1 |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
66 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
67 |
elif isabs(b): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
68 |
# This probably wipes out path so far. However, it's more |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
69 |
# complicated if path begins with a drive letter: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
70 |
# 1. join('c:', '/a') == 'c:/a' |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
71 |
# 2. join('c:/', '/a') == 'c:/a' |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
72 |
# But |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
73 |
# 3. join('c:/a', '/b') == '/b' |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
74 |
# 4. join('c:', 'd:/') = 'd:/' |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
75 |
# 5. join('c:/', 'd:/') = 'd:/' |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
76 |
if path[1:2] != ":" or b[1:2] == ":": |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
77 |
# Path doesn't start with a drive letter, or cases 4 and 5. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
78 |
b_wins = 1 |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
79 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
80 |
# Else path has a drive letter, and b doesn't but is absolute. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
81 |
elif len(path) > 3 or (len(path) == 3 and |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
82 |
path[-1] not in "/\\"): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
83 |
# case 3 |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
84 |
b_wins = 1 |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
85 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
86 |
if b_wins: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
87 |
path = b |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
88 |
else: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
89 |
# Join, and ensure there's a separator. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
90 |
assert len(path) > 0 |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
91 |
if path[-1] in "/\\": |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
92 |
if b and b[0] in "/\\": |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
93 |
path += b[1:] |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
94 |
else: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
95 |
path += b |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
96 |
elif path[-1] == ":": |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
97 |
path += b |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
98 |
elif b: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
99 |
if b[0] in "/\\": |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
100 |
path += b |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
101 |
else: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
102 |
path += "\\" + b |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
103 |
else: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
104 |
# path is not empty and does not end with a backslash, |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
105 |
# but b is empty; since, e.g., split('a/') produces |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
106 |
# ('a', ''), it's best if join() adds a backslash in |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
107 |
# this case. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
108 |
path += '\\' |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
109 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
110 |
return path |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
111 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
112 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
113 |
# Split a path in a drive specification (a drive letter followed by a |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
114 |
# colon) and the path specification. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
115 |
# It is always true that drivespec + pathspec == p |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
116 |
def splitdrive(p): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
117 |
"""Split a pathname into drive and path specifiers. Returns a 2-tuple |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
118 |
"(drive,path)"; either part may be empty""" |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
119 |
if p[1:2] == ':': |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
120 |
return p[0:2], p[2:] |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
121 |
return '', p |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
122 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
123 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
124 |
# Parse UNC paths |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
125 |
def splitunc(p): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
126 |
"""Split a pathname into UNC mount point and relative path specifiers. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
127 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
128 |
Return a 2-tuple (unc, rest); either part may be empty. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
129 |
If unc is not empty, it has the form '//host/mount' (or similar |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
130 |
using backslashes). unc+rest is always the input path. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
131 |
Paths containing drive letters never have an UNC part. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
132 |
""" |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
133 |
if p[1:2] == ':': |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
134 |
return '', p # Drive letter present |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
135 |
firstTwo = p[0:2] |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
136 |
if firstTwo == '//' or firstTwo == '\\\\': |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
137 |
# is a UNC path: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
138 |
# vvvvvvvvvvvvvvvvvvvv equivalent to drive letter |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
139 |
# \\machine\mountpoint\directories... |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
140 |
# directory ^^^^^^^^^^^^^^^ |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
141 |
normp = normcase(p) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
142 |
index = normp.find('\\', 2) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
143 |
if index == -1: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
144 |
##raise RuntimeError, 'illegal UNC path: "' + p + '"' |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
145 |
return ("", p) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
146 |
index = normp.find('\\', index + 1) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
147 |
if index == -1: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
148 |
index = len(p) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
149 |
return p[:index], p[index:] |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
150 |
return '', p |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
151 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
152 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
153 |
# Split a path in head (everything up to the last '/') and tail (the |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
154 |
# rest). After the trailing '/' is stripped, the invariant |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
155 |
# join(head, tail) == p holds. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
156 |
# The resulting head won't end in '/' unless it is the root. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
157 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
158 |
def split(p): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
159 |
"""Split a pathname. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
160 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
161 |
Return tuple (head, tail) where tail is everything after the final slash. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
162 |
Either part may be empty.""" |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
163 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
164 |
d, p = splitdrive(p) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
165 |
# set i to index beyond p's last slash |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
166 |
i = len(p) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
167 |
while i and p[i-1] not in '/\\': |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
168 |
i = i - 1 |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
169 |
head, tail = p[:i], p[i:] # now tail has no slashes |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
170 |
# remove trailing slashes from head, unless it's all slashes |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
171 |
head2 = head |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
172 |
while head2 and head2[-1] in '/\\': |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
173 |
head2 = head2[:-1] |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
174 |
head = head2 or head |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
175 |
return d + head, tail |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
176 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
177 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
178 |
# Split a path in root and extension. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
179 |
# The extension is everything starting at the last dot in the last |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
180 |
# pathname component; the root is everything before that. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
181 |
# It is always true that root + ext == p. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
182 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
183 |
def splitext(p): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
184 |
"""Split the extension from a pathname. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
185 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
186 |
Extension is everything from the last dot to the end. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
187 |
Return (root, ext), either part may be empty.""" |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
188 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
189 |
i = p.rfind('.') |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
190 |
if i<=max(p.rfind('/'), p.rfind('\\')): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
191 |
return p, '' |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
192 |
else: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
193 |
return p[:i], p[i:] |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
194 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
195 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
196 |
# Return the tail (basename) part of a path. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
197 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
198 |
def basename(p): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
199 |
"""Returns the final component of a pathname""" |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
200 |
return split(p)[1] |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
201 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
202 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
203 |
# Return the head (dirname) part of a path. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
204 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
205 |
def dirname(p): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
206 |
"""Returns the directory component of a pathname""" |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
207 |
return split(p)[0] |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
208 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
209 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
210 |
# Return the longest prefix of all list elements. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
211 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
212 |
def commonprefix(m): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
213 |
"Given a list of pathnames, returns the longest common leading component" |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
214 |
if not m: return '' |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
215 |
s1 = min(m) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
216 |
s2 = max(m) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
217 |
n = min(len(s1), len(s2)) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
218 |
for i in xrange(n): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
219 |
if s1[i] != s2[i]: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
220 |
return s1[:i] |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
221 |
return s1[:n] |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
222 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
223 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
224 |
# Get size, mtime, atime of files. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
225 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
226 |
def getsize(filename): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
227 |
"""Return the size of a file, reported by os.stat()""" |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
228 |
return os.stat(filename).st_size |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
229 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
230 |
def getmtime(filename): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
231 |
"""Return the last modification time of a file, reported by os.stat()""" |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
232 |
return os.stat(filename).st_mtime |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
233 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
234 |
def getatime(filename): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
235 |
"""Return the last access time of a file, reported by os.stat()""" |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
236 |
return os.stat(filename).st_atime |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
237 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
238 |
def getctime(filename): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
239 |
"""Return the creation time of a file, reported by os.stat().""" |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
240 |
return os.stat(filename).st_ctime |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
241 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
242 |
# Is a path a symbolic link? |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
243 |
# This will always return false on systems where posix.lstat doesn't exist. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
244 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
245 |
def islink(path): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
246 |
"""Test for symbolic link. On WindowsNT/95 always returns false""" |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
247 |
return False |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
248 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
249 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
250 |
# Does a path exist? |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
251 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
252 |
def exists(path): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
253 |
"""Test whether a path exists""" |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
254 |
try: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
255 |
st = os.stat(path) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
256 |
except os.error: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
257 |
return False |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
258 |
return True |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
259 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
260 |
lexists = exists |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
261 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
262 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
263 |
# Is a path a dos directory? |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
264 |
# This follows symbolic links, so both islink() and isdir() can be true |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
265 |
# for the same path. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
266 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
267 |
def isdir(path): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
268 |
"""Test whether a path is a directory""" |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
269 |
try: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
270 |
st = os.stat(path) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
271 |
except os.error: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
272 |
return False |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
273 |
return stat.S_ISDIR(st.st_mode) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
274 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
275 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
276 |
# Is a path a regular file? |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
277 |
# This follows symbolic links, so both islink() and isdir() can be true |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
278 |
# for the same path. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
279 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
280 |
def isfile(path): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
281 |
"""Test whether a path is a regular file""" |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
282 |
try: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
283 |
st = os.stat(path) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
284 |
except os.error: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
285 |
return False |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
286 |
return stat.S_ISREG(st.st_mode) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
287 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
288 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
289 |
# Is a path a mount point? Either a root (with or without drive letter) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
290 |
# or an UNC path with at most a / or \ after the mount point. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
291 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
292 |
def ismount(path): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
293 |
"""Test whether a path is a mount point (defined as root of drive)""" |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
294 |
unc, rest = splitunc(path) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
295 |
if unc: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
296 |
return rest in ("", "/", "\\") |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
297 |
p = splitdrive(path)[1] |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
298 |
return len(p) == 1 and p[0] in '/\\' |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
299 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
300 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
301 |
# Directory tree walk. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
302 |
# For each directory under top (including top itself, but excluding |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
303 |
# '.' and '..'), func(arg, dirname, filenames) is called, where |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
304 |
# dirname is the name of the directory and filenames is the list |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
305 |
# of files (and subdirectories etc.) in the directory. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
306 |
# The func may modify the filenames list, to implement a filter, |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
307 |
# or to impose a different order of visiting. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
308 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
309 |
def walk(top, func, arg): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
310 |
"""Directory tree walk with callback function. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
311 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
312 |
For each directory in the directory tree rooted at top (including top |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
313 |
itself, but excluding '.' and '..'), call func(arg, dirname, fnames). |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
314 |
dirname is the name of the directory, and fnames a list of the names of |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
315 |
the files and subdirectories in dirname (excluding '.' and '..'). func |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
316 |
may modify the fnames list in-place (e.g. via del or slice assignment), |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
317 |
and walk will only recurse into the subdirectories whose names remain in |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
318 |
fnames; this can be used to implement a filter, or to impose a specific |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
319 |
order of visiting. No semantics are defined for, or required of, arg, |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
320 |
beyond that arg is always passed to func. It can be used, e.g., to pass |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
321 |
a filename pattern, or a mutable object designed to accumulate |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
322 |
statistics. Passing None for arg is common.""" |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
323 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
324 |
try: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
325 |
names = os.listdir(top) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
326 |
except os.error: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
327 |
return |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
328 |
func(arg, top, names) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
329 |
exceptions = ('.', '..') |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
330 |
for name in names: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
331 |
if name not in exceptions: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
332 |
name = join(top, name) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
333 |
if isdir(name): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
334 |
walk(name, func, arg) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
335 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
336 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
337 |
# Expand paths beginning with '~' or '~user'. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
338 |
# '~' means $HOME; '~user' means that user's home directory. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
339 |
# If the path doesn't begin with '~', or if the user or $HOME is unknown, |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
340 |
# the path is returned unchanged (leaving error reporting to whatever |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
341 |
# function is called with the expanded path as argument). |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
342 |
# See also module 'glob' for expansion of *, ? and [...] in pathnames. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
343 |
# (A function should also be defined to do full *sh-style environment |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
344 |
# variable expansion.) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
345 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
346 |
def expanduser(path): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
347 |
"""Expand ~ and ~user constructs. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
348 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
349 |
If user or $HOME is unknown, do nothing.""" |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
350 |
if path[:1] != '~': |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
351 |
return path |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
352 |
i, n = 1, len(path) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
353 |
while i < n and path[i] not in '/\\': |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
354 |
i = i + 1 |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
355 |
if i == 1: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
356 |
if 'HOME' in os.environ: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
357 |
userhome = os.environ['HOME'] |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
358 |
elif not 'HOMEPATH' in os.environ: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
359 |
return path |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
360 |
else: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
361 |
try: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
362 |
drive = os.environ['HOMEDRIVE'] |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
363 |
except KeyError: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
364 |
drive = '' |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
365 |
userhome = join(drive, os.environ['HOMEPATH']) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
366 |
else: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
367 |
return path |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
368 |
return userhome + path[i:] |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
369 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
370 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
371 |
# Expand paths containing shell variable substitutions. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
372 |
# The following rules apply: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
373 |
# - no expansion within single quotes |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
374 |
# - no escape character, except for '$$' which is translated into '$' |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
375 |
# - ${varname} is accepted. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
376 |
# - varnames can be made out of letters, digits and the character '_' |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
377 |
# XXX With COMMAND.COM you can use any characters in a variable name, |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
378 |
# XXX except '^|<>='. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
379 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
380 |
def expandvars(path): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
381 |
"""Expand shell variables of form $var and ${var}. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
382 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
383 |
Unknown variables are left unchanged.""" |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
384 |
if '$' not in path: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
385 |
return path |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
386 |
import string |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
387 |
varchars = string.ascii_letters + string.digits + '_-' |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
388 |
res = '' |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
389 |
index = 0 |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
390 |
pathlen = len(path) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
391 |
while index < pathlen: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
392 |
c = path[index] |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
393 |
if c == '\'': # no expansion within single quotes |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
394 |
path = path[index + 1:] |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
395 |
pathlen = len(path) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
396 |
try: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
397 |
index = path.index('\'') |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
398 |
res = res + '\'' + path[:index + 1] |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
399 |
except ValueError: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
400 |
res = res + path |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
401 |
index = pathlen - 1 |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
402 |
elif c == '$': # variable or '$$' |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
403 |
if path[index + 1:index + 2] == '$': |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
404 |
res = res + c |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
405 |
index = index + 1 |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
406 |
elif path[index + 1:index + 2] == '{': |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
407 |
path = path[index+2:] |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
408 |
pathlen = len(path) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
409 |
try: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
410 |
index = path.index('}') |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
411 |
var = path[:index] |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
412 |
if var in os.environ: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
413 |
res = res + os.environ[var] |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
414 |
except ValueError: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
415 |
res = res + path |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
416 |
index = pathlen - 1 |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
417 |
else: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
418 |
var = '' |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
419 |
index = index + 1 |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
420 |
c = path[index:index + 1] |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
421 |
while c != '' and c in varchars: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
422 |
var = var + c |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
423 |
index = index + 1 |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
424 |
c = path[index:index + 1] |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
425 |
if var in os.environ: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
426 |
res = res + os.environ[var] |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
427 |
if c != '': |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
428 |
res = res + c |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
429 |
else: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
430 |
res = res + c |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
431 |
index = index + 1 |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
432 |
return res |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
433 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
434 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
435 |
# Normalize a path, e.g. A//B, A/./B and A/foo/../B all become A\B. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
436 |
# Previously, this function also truncated pathnames to 8+3 format, |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
437 |
# but as this module is called "ntpath", that's obviously wrong! |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
438 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
439 |
def normpath(path): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
440 |
"""Normalize path, eliminating double slashes, etc.""" |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
441 |
path = path.replace("/", "\\") |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
442 |
prefix, path = splitdrive(path) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
443 |
# We need to be careful here. If the prefix is empty, and the path starts |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
444 |
# with a backslash, it could either be an absolute path on the current |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
445 |
# drive (\dir1\dir2\file) or a UNC filename (\\server\mount\dir1\file). It |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
446 |
# is therefore imperative NOT to collapse multiple backslashes blindly in |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
447 |
# that case. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
448 |
# The code below preserves multiple backslashes when there is no drive |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
449 |
# letter. This means that the invalid filename \\\a\b is preserved |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
450 |
# unchanged, where a\\\b is normalised to a\b. It's not clear that there |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
451 |
# is any better behaviour for such edge cases. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
452 |
if prefix == '': |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
453 |
# No drive letter - preserve initial backslashes |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
454 |
while path[:1] == "\\": |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
455 |
prefix = prefix + "\\" |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
456 |
path = path[1:] |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
457 |
else: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
458 |
# We have a drive letter - collapse initial backslashes |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
459 |
if path.startswith("\\"): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
460 |
prefix = prefix + "\\" |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
461 |
path = path.lstrip("\\") |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
462 |
comps = path.split("\\") |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
463 |
i = 0 |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
464 |
while i < len(comps): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
465 |
if comps[i] in ('.', ''): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
466 |
del comps[i] |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
467 |
elif comps[i] == '..': |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
468 |
if i > 0 and comps[i-1] != '..': |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
469 |
del comps[i-1:i+1] |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
470 |
i -= 1 |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
471 |
elif i == 0 and prefix.endswith("\\"): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
472 |
del comps[i] |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
473 |
else: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
474 |
i += 1 |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
475 |
else: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
476 |
i += 1 |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
477 |
# If the path is now empty, substitute '.' |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
478 |
if not prefix and not comps: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
479 |
comps.append('.') |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
480 |
return prefix + "\\".join(comps) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
481 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
482 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
483 |
# Return an absolute path. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
484 |
try: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
485 |
from nt import _getfullpathname |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
486 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
487 |
except ImportError: # not running on Windows - mock up something sensible |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
488 |
def abspath(path): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
489 |
"""Return the absolute version of a path.""" |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
490 |
if not isabs(path): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
491 |
path = join(os.getcwd(), path) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
492 |
return normpath(path) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
493 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
494 |
else: # use native Windows method on Windows |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
495 |
def abspath(path): |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
496 |
"""Return the absolute version of a path.""" |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
497 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
498 |
if path: # Empty path must return current working directory. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
499 |
try: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
500 |
path = _getfullpathname(path) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
501 |
except WindowsError: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
502 |
pass # Bad path - return unchanged. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
503 |
else: |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
504 |
path = os.getcwd() |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
505 |
return normpath(path) |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
506 |
|
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
507 |
# realpath is a no-op on systems without islink support |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
508 |
realpath = abspath |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
509 |
# Win9x family and earlier have no Unicode filename support. |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
510 |
supports_unicode_filenames = (hasattr(sys, "getwindowsversion") and |
ae805ac0140d
DP tools release version Revision: 200912
Deepak Modgil <Deepak.Modgil@Nokia.com>
parents:
diff
changeset
|
511 |
sys.getwindowsversion()[3] >= 2) |