def lzmaopen(cls,
name=None,
mode="r",
fileobj=None,
compressformat="xz",
compresslevel=9,
**kwargs):
"""Open lzma/xz compressed tar archive name for reading or writing.
Appending is not allowed.
"""
if len(mode) > 1 or mode not in "rw":
raise ValueError("mode must be 'r' or 'w'.")
try:
import lzma
except ImportError:
raise tarfile.CompressionError("lzma module is not available")
if fileobj is not None:
fileobj = _LZMAProxy(fileobj, mode)
else:
options = {"format": compressformat,
"level": compresslevel}
fileobj = lzma.LZMAFile(name, mode, options=options)
try:
t = cls.taropen(name, mode, fileobj, **kwargs)
except IOError:
raise ReadError("not a lzma file")
t._extfileobj = False
return t
def lzmaopen(cls,
name=None,
mode="r",
fileobj=None,
compresslevel=None,
**kwargs):
"""Open lzma/xz compressed tar archive name for reading or writing.
Appending is not allowed.
"""
try:
import lzma
except ImportError:
try:
from backports import lzma
except ImportError:
raise tarfile.CompressionError("Lzma module is not available")
if not compresslevel:
compresslevel = ctx.config.values.build.compressionlevel
if len(mode) > 1 or mode not in "rw":
raise ValueError("mode must be 'r' or 'w'.")
if 'w' in mode:
if fileobj is not None:
fileobj = _LZMAProxy(fileobj, mode)
else:
fileobj = lzma.LZMAFile(name, mode, preset=compresslevel)
else:
if fileobj is not None:
fileobj = _LZMAProxy(fileobj, mode)
else:
fileobj = lzma.LZMAFile(name, mode)
try:
t = cls.taropen(name, mode, fileobj, **kwargs)
except IOError:
raise tarfile.ReadError(
_(" \"{}\" is not a lzma file.").format(name))
t._extfileobj = False
return t
def xzopen(cls, name, mode="r", fileobj=None, compresslevel=9, **kwargs):
"""Open lzma compressed tar archive name for reading or writing.
Appending is not allowed.
"""
if mode not in ("r", "w"):
raise ValueError("mode must be 'r' or 'w'")
try:
from backports import lzma
lzma.LZMAFile
except (ImportError, AttributeError):
raise tarfile.CompressionError("lzma module is not available")
try:
fileobj = lzma.LZMAFile(fileobj or name, mode)
except (OSError, IOError):
if mode == 'r':
raise tarfile.ReadError("not an lzma file")
raise
try:
fileobj.peek()
except (lzma.LZMAError, EOFError):
raise tarfile.ReadError("not an lzma file")
try:
t = cls.taropen(name, mode, fileobj, **kwargs)
except IOError:
fileobj.close()
if mode == 'r':
raise tarfile.ReadError("not an lzma file")
raise
except:
fileobj.close()
raise
t._extfileobj = False
return t