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# coding: utf-8
"""`TarFS` opener definition.
"""
from __future__ import absolute_import, print_function, unicode_literals
import typing
from .base import Opener
from .errors import NotWriteable
from .registry import registry
if typing.TYPE_CHECKING:
from typing import Text
from ..tarfs import TarFS # noqa: F401
from .parse import ParseResult
@registry.install
class TarOpener(Opener):
"""`TarFS` opener."""
protocols = ["tar"]
def open_fs(
self,
fs_url, # type: Text
parse_result, # type: ParseResult
writeable, # type: bool
create, # type: bool
cwd, # type: Text
):
# type: (...) -> TarFS
from ..tarfs import TarFS
if not create and writeable:
raise NotWriteable("Unable to open existing TAR file for writing")
tar_fs = TarFS(parse_result.resource, write=create)
return tar_fs
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