mirror of https://github.com/python/cpython
212 lines
7.7 KiB
Python
212 lines
7.7 KiB
Python
"""distutils.dir_util
|
|
|
|
Utility functions for manipulating directories and directory trees."""
|
|
|
|
__revision__ = "$Id$"
|
|
|
|
import os
|
|
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=0777, 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, basestring):
|
|
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, mode)
|
|
except OSError, exc:
|
|
if not (exc.errno == errno.EEXIST and os.path.isdir(head)):
|
|
raise DistutilsFileError(
|
|
"could not create '%s': %s" % (head, exc.args[-1]))
|
|
created_dirs.append(head)
|
|
|
|
_path_created[abs_head] = 1
|
|
return created_dirs
|
|
|
|
def create_tree(base_dir, files, mode=0777, 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 = {}
|
|
for file in files:
|
|
need_dir[os.path.join(base_dir, os.path.dirname(file))] = 1
|
|
need_dirs = need_dir.keys()
|
|
need_dirs.sort()
|
|
|
|
# Now create them
|
|
for dir in need_dirs:
|
|
mkpath(dir, mode, verbose=verbose, dry_run=dry_run)
|
|
|
|
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, (errno, errstr):
|
|
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
|
|
|
|
def _build_cmdtuple(path, cmdtuples):
|
|
"""Helper for remove_tree()."""
|
|
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), 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.
|
|
|
|
This is useful to make 'path' the second argument to os.path.join().
|
|
"""
|
|
drive, path = os.path.splitdrive(path)
|
|
if path[0:1] == os.sep:
|
|
path = drive + path[1:]
|
|
return path
|