281 lines
8.4 KiB
Python
281 lines
8.4 KiB
Python
"""distutils.archive_util
|
|
|
|
Utility functions for creating archive files (tarballs, zip files,
|
|
that sort of thing)."""
|
|
|
|
import os
|
|
from warnings import warn
|
|
import sys
|
|
|
|
try:
|
|
import zipfile
|
|
except ImportError:
|
|
zipfile = None
|
|
|
|
|
|
from distutils.errors import DistutilsExecError
|
|
from distutils.spawn import spawn
|
|
from distutils.dir_util import mkpath
|
|
from distutils import log
|
|
|
|
try:
|
|
from pwd import getpwnam
|
|
except ImportError:
|
|
getpwnam = None
|
|
|
|
try:
|
|
from grp import getgrnam
|
|
except ImportError:
|
|
getgrnam = None
|
|
|
|
|
|
def _get_gid(name):
|
|
"""Returns a gid, given a group name."""
|
|
if getgrnam is None or name is None:
|
|
return None
|
|
try:
|
|
result = getgrnam(name)
|
|
except KeyError:
|
|
result = None
|
|
if result is not None:
|
|
return result[2]
|
|
return None
|
|
|
|
|
|
def _get_uid(name):
|
|
"""Returns an uid, given a user name."""
|
|
if getpwnam is None or name is None:
|
|
return None
|
|
try:
|
|
result = getpwnam(name)
|
|
except KeyError:
|
|
result = None
|
|
if result is not None:
|
|
return result[2]
|
|
return None
|
|
|
|
|
|
def make_tarball(
|
|
base_name, base_dir, compress="gzip", verbose=0, dry_run=0, owner=None, group=None
|
|
):
|
|
"""Create a (possibly compressed) tar file from all the files under
|
|
'base_dir'.
|
|
|
|
'compress' must be "gzip" (the default), "bzip2", "xz", "compress", or
|
|
None. ("compress" will be deprecated in Python 3.2)
|
|
|
|
'owner' and 'group' can be used to define an owner and a group for the
|
|
archive that is being built. If not provided, the current owner and group
|
|
will be used.
|
|
|
|
The output tar file will be named 'base_dir' + ".tar", possibly plus
|
|
the appropriate compression extension (".gz", ".bz2", ".xz" or ".Z").
|
|
|
|
Returns the output filename.
|
|
"""
|
|
tar_compression = {
|
|
'gzip': 'gz',
|
|
'bzip2': 'bz2',
|
|
'xz': 'xz',
|
|
None: '',
|
|
'compress': '',
|
|
}
|
|
compress_ext = {'gzip': '.gz', 'bzip2': '.bz2', 'xz': '.xz', 'compress': '.Z'}
|
|
|
|
# flags for compression program, each element of list will be an argument
|
|
if compress is not None and compress not in compress_ext.keys():
|
|
raise ValueError(
|
|
"bad value for 'compress': must be None, 'gzip', 'bzip2', "
|
|
"'xz' or 'compress'"
|
|
)
|
|
|
|
archive_name = base_name + '.tar'
|
|
if compress != 'compress':
|
|
archive_name += compress_ext.get(compress, '')
|
|
|
|
mkpath(os.path.dirname(archive_name), dry_run=dry_run)
|
|
|
|
# creating the tarball
|
|
import tarfile # late import so Python build itself doesn't break
|
|
|
|
log.info('Creating tar archive')
|
|
|
|
uid = _get_uid(owner)
|
|
gid = _get_gid(group)
|
|
|
|
def _set_uid_gid(tarinfo):
|
|
if gid is not None:
|
|
tarinfo.gid = gid
|
|
tarinfo.gname = group
|
|
if uid is not None:
|
|
tarinfo.uid = uid
|
|
tarinfo.uname = owner
|
|
return tarinfo
|
|
|
|
if not dry_run:
|
|
tar = tarfile.open(archive_name, 'w|%s' % tar_compression[compress])
|
|
try:
|
|
tar.add(base_dir, filter=_set_uid_gid)
|
|
finally:
|
|
tar.close()
|
|
|
|
# compression using `compress`
|
|
if compress == 'compress':
|
|
warn("'compress' is deprecated.", DeprecationWarning)
|
|
# the option varies depending on the platform
|
|
compressed_name = archive_name + compress_ext[compress]
|
|
if sys.platform == 'win32':
|
|
cmd = [compress, archive_name, compressed_name]
|
|
else:
|
|
cmd = [compress, '-f', archive_name]
|
|
spawn(cmd, dry_run=dry_run)
|
|
return compressed_name
|
|
|
|
return archive_name
|
|
|
|
|
|
def make_zipfile(base_name, base_dir, verbose=0, dry_run=0): # noqa: C901
|
|
"""Create a zip file from all the files under 'base_dir'.
|
|
|
|
The output zip file will be named 'base_name' + ".zip". Uses either the
|
|
"zipfile" Python module (if available) or the InfoZIP "zip" utility
|
|
(if installed and found on the default search path). If neither tool is
|
|
available, raises DistutilsExecError. Returns the name of the output zip
|
|
file.
|
|
"""
|
|
zip_filename = base_name + ".zip"
|
|
mkpath(os.path.dirname(zip_filename), dry_run=dry_run)
|
|
|
|
# If zipfile module is not available, try spawning an external
|
|
# 'zip' command.
|
|
if zipfile is None:
|
|
if verbose:
|
|
zipoptions = "-r"
|
|
else:
|
|
zipoptions = "-rq"
|
|
|
|
try:
|
|
spawn(["zip", zipoptions, zip_filename, base_dir], dry_run=dry_run)
|
|
except DistutilsExecError:
|
|
# XXX really should distinguish between "couldn't find
|
|
# external 'zip' command" and "zip failed".
|
|
raise DistutilsExecError(
|
|
(
|
|
"unable to create zip file '%s': "
|
|
"could neither import the 'zipfile' module nor "
|
|
"find a standalone zip utility"
|
|
)
|
|
% zip_filename
|
|
)
|
|
|
|
else:
|
|
log.info("creating '%s' and adding '%s' to it", zip_filename, base_dir)
|
|
|
|
if not dry_run:
|
|
try:
|
|
zip = zipfile.ZipFile(
|
|
zip_filename, "w", compression=zipfile.ZIP_DEFLATED
|
|
)
|
|
except RuntimeError:
|
|
zip = zipfile.ZipFile(zip_filename, "w", compression=zipfile.ZIP_STORED)
|
|
|
|
with zip:
|
|
if base_dir != os.curdir:
|
|
path = os.path.normpath(os.path.join(base_dir, ''))
|
|
zip.write(path, path)
|
|
log.info("adding '%s'", path)
|
|
for dirpath, dirnames, filenames in os.walk(base_dir):
|
|
for name in dirnames:
|
|
path = os.path.normpath(os.path.join(dirpath, name, ''))
|
|
zip.write(path, path)
|
|
log.info("adding '%s'", path)
|
|
for name in filenames:
|
|
path = os.path.normpath(os.path.join(dirpath, name))
|
|
if os.path.isfile(path):
|
|
zip.write(path, path)
|
|
log.info("adding '%s'", path)
|
|
|
|
return zip_filename
|
|
|
|
|
|
ARCHIVE_FORMATS = {
|
|
'gztar': (make_tarball, [('compress', 'gzip')], "gzip'ed tar-file"),
|
|
'bztar': (make_tarball, [('compress', 'bzip2')], "bzip2'ed tar-file"),
|
|
'xztar': (make_tarball, [('compress', 'xz')], "xz'ed tar-file"),
|
|
'ztar': (make_tarball, [('compress', 'compress')], "compressed tar file"),
|
|
'tar': (make_tarball, [('compress', None)], "uncompressed tar file"),
|
|
'zip': (make_zipfile, [], "ZIP file"),
|
|
}
|
|
|
|
|
|
def check_archive_formats(formats):
|
|
"""Returns the first format from the 'format' list that is unknown.
|
|
|
|
If all formats are known, returns None
|
|
"""
|
|
for format in formats:
|
|
if format not in ARCHIVE_FORMATS:
|
|
return format
|
|
return None
|
|
|
|
|
|
def make_archive(
|
|
base_name,
|
|
format,
|
|
root_dir=None,
|
|
base_dir=None,
|
|
verbose=0,
|
|
dry_run=0,
|
|
owner=None,
|
|
group=None,
|
|
):
|
|
"""Create an archive file (eg. zip or tar).
|
|
|
|
'base_name' is the name of the file to create, minus any format-specific
|
|
extension; 'format' is the archive format: one of "zip", "tar", "gztar",
|
|
"bztar", "xztar", or "ztar".
|
|
|
|
'root_dir' is a directory that will be the root directory of the
|
|
archive; ie. we typically chdir into 'root_dir' before creating the
|
|
archive. 'base_dir' is the directory where we start archiving from;
|
|
ie. 'base_dir' will be the common prefix of all files and
|
|
directories in the archive. 'root_dir' and 'base_dir' both default
|
|
to the current directory. Returns the name of the archive file.
|
|
|
|
'owner' and 'group' are used when creating a tar archive. By default,
|
|
uses the current owner and group.
|
|
"""
|
|
save_cwd = os.getcwd()
|
|
if root_dir is not None:
|
|
log.debug("changing into '%s'", root_dir)
|
|
base_name = os.path.abspath(base_name)
|
|
if not dry_run:
|
|
os.chdir(root_dir)
|
|
|
|
if base_dir is None:
|
|
base_dir = os.curdir
|
|
|
|
kwargs = {'dry_run': dry_run}
|
|
|
|
try:
|
|
format_info = ARCHIVE_FORMATS[format]
|
|
except KeyError:
|
|
raise ValueError("unknown archive format '%s'" % format)
|
|
|
|
func = format_info[0]
|
|
for arg, val in format_info[1]:
|
|
kwargs[arg] = val
|
|
|
|
if format != 'zip':
|
|
kwargs['owner'] = owner
|
|
kwargs['group'] = group
|
|
|
|
try:
|
|
filename = func(base_name, base_dir, **kwargs)
|
|
finally:
|
|
if root_dir is not None:
|
|
log.debug("changing back to '%s'", save_cwd)
|
|
os.chdir(save_cwd)
|
|
|
|
return filename
|