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
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
|
"""distutils.dir_util
Utility functions for manipulating directories and directory trees."""
__revision__ = "$Id$"
import os, sys
from distutils.errors import DistutilsFileError, DistutilsInternalError
from distutils import log
# cache for by mkpath() -- in addition to cheapening redundant calls,
# eliminates redundant "creating /foo/bar/baz" messages in dry-run mode
_path_created = {}
# I don't use os.makedirs because a) it's new to Python 1.5.2, and
# b) it blows up if the directory already exists (I want to silently
# succeed in that case).
def mkpath (name, mode=0o777, verbose=1, dry_run=0):
"""Create a directory and any missing ancestor directories. If the
directory already exists (or if 'name' is the empty string, which
means the current directory, which of course exists), then do
nothing. Raise DistutilsFileError if unable to create some
directory along the way (eg. some sub-path exists, but is a file
rather than a directory). If 'verbose' is true, print a one-line
summary of each mkdir to stdout. Return the list of directories
actually created."""
global _path_created
# Detect a common bug -- name is None
if not isinstance(name, str):
raise DistutilsInternalError(
"mkpath: 'name' must be a string (got %r)" % (name,))
# XXX what's the better way to handle verbosity? print as we create
# each directory in the path (the current behaviour), or only announce
# the creation of the whole path? (quite easy to do the latter since
# we're not using a recursive algorithm)
name = os.path.normpath(name)
created_dirs = []
if os.path.isdir(name) or name == '':
return created_dirs
if _path_created.get(os.path.abspath(name)):
return created_dirs
(head, tail) = os.path.split(name)
tails = [tail] # stack of lone dirs to create
while head and tail and not os.path.isdir(head):
(head, tail) = os.path.split(head)
tails.insert(0, tail) # push next higher dir onto stack
# now 'head' contains the deepest directory that already exists
# (that is, the child of 'head' in 'name' is the highest directory
# that does *not* exist)
for d in tails:
#print "head = %s, d = %s: " % (head, d),
head = os.path.join(head, d)
abs_head = os.path.abspath(head)
if _path_created.get(abs_head):
continue
if verbose >= 1:
log.info("creating %s", head)
if not dry_run:
try:
os.mkdir(head)
created_dirs.append(head)
except OSError as exc:
raise DistutilsFileError(
"could not create '%s': %s" % (head, exc.args[-1]))
_path_created[abs_head] = 1
return created_dirs
# mkpath ()
def create_tree (base_dir, files, mode=0o777, verbose=1, dry_run=0):
"""Create all the empty directories under 'base_dir' needed to
put 'files' there. 'base_dir' is just the a name of a directory
which doesn't necessarily exist yet; 'files' is a list of filenames
to be interpreted relative to 'base_dir'. 'base_dir' + the
directory portion of every file in 'files' will be created if it
doesn't already exist. 'mode', 'verbose' and 'dry_run' flags are as
for 'mkpath()'."""
# First get the list of directories to create
need_dir = set()
for file in files:
need_dir.add(os.path.join(base_dir, os.path.dirname(file)))
# Now create them
for dir in sorted(need_dir):
mkpath(dir, mode, verbose=verbose, dry_run=dry_run)
# create_tree ()
def copy_tree (src, dst,
preserve_mode=1,
preserve_times=1,
preserve_symlinks=0,
update=0,
verbose=1,
dry_run=0):
"""Copy an entire directory tree 'src' to a new location 'dst'. Both
'src' and 'dst' must be directory names. If 'src' is not a
directory, raise DistutilsFileError. If 'dst' does not exist, it is
created with 'mkpath()'. The end result of the copy is that every
file in 'src' is copied to 'dst', and directories under 'src' are
recursively copied to 'dst'. Return the list of files that were
copied or might have been copied, using their output name. The
return value is unaffected by 'update' or 'dry_run': it is simply
the list of all files under 'src', with the names changed to be
under 'dst'.
'preserve_mode' and 'preserve_times' are the same as for
'copy_file'; note that they only apply to regular files, not to
directories. If 'preserve_symlinks' is true, symlinks will be
copied as symlinks (on platforms that support them!); otherwise
(the default), the destination of the symlink will be copied.
'update' and 'verbose' are the same as for 'copy_file'."""
from distutils.file_util import copy_file
if not dry_run and not os.path.isdir(src):
raise DistutilsFileError(
"cannot copy tree '%s': not a directory" % src)
try:
names = os.listdir(src)
except os.error as e:
(errno, errstr) = e
if dry_run:
names = []
else:
raise DistutilsFileError(
"error listing files in '%s': %s" % (src, errstr))
if not dry_run:
mkpath(dst, verbose=verbose)
outputs = []
for n in names:
src_name = os.path.join(src, n)
dst_name = os.path.join(dst, n)
if preserve_symlinks and os.path.islink(src_name):
link_dest = os.readlink(src_name)
if verbose >= 1:
log.info("linking %s -> %s", dst_name, link_dest)
if not dry_run:
os.symlink(link_dest, dst_name)
outputs.append(dst_name)
elif os.path.isdir(src_name):
outputs.extend(
copy_tree(src_name, dst_name, preserve_mode,
preserve_times, preserve_symlinks, update,
verbose=verbose, dry_run=dry_run))
else:
copy_file(src_name, dst_name, preserve_mode,
preserve_times, update, verbose=verbose,
dry_run=dry_run)
outputs.append(dst_name)
return outputs
# Helper for remove_tree()
def _build_cmdtuple(path, cmdtuples):
for f in os.listdir(path):
real_f = os.path.join(path,f)
if os.path.isdir(real_f) and not os.path.islink(real_f):
_build_cmdtuple(real_f, cmdtuples)
else:
cmdtuples.append((os.remove, real_f))
cmdtuples.append((os.rmdir, path))
def remove_tree (directory, verbose=1, dry_run=0):
"""Recursively remove an entire directory tree. Any errors are ignored
(apart from being reported to stdout if 'verbose' is true).
"""
from distutils.util import grok_environment_error
global _path_created
if verbose >= 1:
log.info("removing '%s' (and everything under it)", directory)
if dry_run:
return
cmdtuples = []
_build_cmdtuple(directory, cmdtuples)
for cmd in cmdtuples:
try:
cmd[0](cmd[1])
# remove dir from cache if it's already there
abspath = os.path.abspath(cmd[1])
if abspath in _path_created:
del _path_created[abspath]
except (IOError, OSError) as exc:
log.warn(grok_environment_error(
exc, "error removing %s: " % directory))
def ensure_relative (path):
"""Take the full path 'path', and make it a relative path so
it can be the second argument to os.path.join().
"""
drive, path = os.path.splitdrive(path)
if sys.platform == 'mac':
return os.sep + path
else:
if path[0:1] == os.sep:
path = drive + path[1:]
return path
|
