def cat_extract(tar, member, targetpath):
"""Extract a regular file member using cat for async-like I/O
Mostly adapted from tarfile.py.
"""
assert member.isreg()
# Fetch the TarInfo object for the given name and build the
# destination pathname, replacing forward slashes to platform
# specific separators.
targetpath = targetpath.rstrip("/")
targetpath = targetpath.replace("/", os.sep)
# Create all upper directories.
upperdirs = os.path.dirname(targetpath)
if upperdirs and not os.path.exists(upperdirs):
try:
# Create directories that are not part of the archive with
# default permissions.
os.makedirs(upperdirs)
except EnvironmentError as e:
if e.errno == errno.EEXIST:
# Ignore an error caused by the race of
# the directory being created between the
# check for the path and the creation.
pass
else:
raise
with files.DeleteOnError(targetpath) as dest:
with pipeline.get_cat_pipeline(pipeline.PIPE, dest.f) as pl:
fp = tar.extractfile(member)
copyfileobj.copyfileobj(fp, pl.stdin)
if sys.version_info < (3, 5):
tar.chown(member, targetpath)
else:
tar.chown(member, targetpath, False)
tar.chmod(member, targetpath)
tar.utime(member, targetpath)
def cat_extract(tar, member, targetpath):
"""Extract a regular file member using cat for async-like I/O
Mostly adapted from tarfile.py.
"""
assert member.isreg()
# Fetch the TarInfo object for the given name and build the
# destination pathname, replacing forward slashes to platform
# specific separators.
targetpath = targetpath.rstrip("/")
targetpath = targetpath.replace("/", os.sep)
# Create all upper directories.
upperdirs = os.path.dirname(targetpath)
if upperdirs and not os.path.exists(upperdirs):
try:
# Create directories that are not part of the archive with
# default permissions.
os.makedirs(upperdirs)
except EnvironmentError as e:
if e.errno == errno.EEXIST:
# Ignore an error caused by the race of
# the directory being created between the
# check for the path and the creation.
pass
else:
raise
with files.DeleteOnError(targetpath) as dest:
with pipeline.get_cat_pipeline(pipeline.PIPE, dest.f) as pl:
fp = tar.extractfile(member)
copyfileobj.copyfileobj(fp, pl.stdin)
if sys.version_info < (3, 5):
tar.chown(member, targetpath)
else:
tar.chown(member, targetpath, False)
tar.chmod(member, targetpath)
tar.utime(member, targetpath)
