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# Copyright (C) 2017 Codethink Limited
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library. If not, see <http://www.gnu.org/licenses/>.
#
# Authors:
# Phillip Smyth <phillip.smyth@codethink.co.uk>
# Jonathan Maw <jonathan.maw@codethink.co.uk>
# Richard Maw <richard.maw@codethink.co.uk>
"""
deb - stage files from .deb packages
====================================
**Host dependencies:**
* arpy (python package)
**Usage:**
.. code:: yaml
# Specify the deb source kind
kind: deb
# Specify the deb url. Using an alias defined in your project
# configuration is encouraged. 'bst track' will update the
# sha256sum in 'ref' to the downloaded file's sha256sum.
url: upstream:foo.deb
# Specify the ref. It's a sha256sum of the file you download.
ref: 6c9f6f68a131ec6381da82f2bff978083ed7f4f7991d931bfa767b7965ebc94b
# Specify the basedir to return only the specified dir and its children
base-dir: ''
See :ref:`built-in functionality doumentation <core_source_builtins>` for
details on common configuration options for sources.
"""
import tarfile
from contextlib import contextmanager
import arpy # pylint: disable=import-error
from .tar import TarSource
class DebSource(TarSource):
# pylint: disable=attribute-defined-outside-init
def configure(self, node):
super().configure(node)
self.base_dir = self.node_get_member(node, str, 'base-dir', None)
def preflight(self):
return
@contextmanager
def _get_tar(self):
with open(self._get_mirror_file(), 'rb') as deb_file:
arpy_archive = arpy.Archive(fileobj=deb_file)
arpy_archive.read_all_headers()
data_tar_arpy = [v for k, v in arpy_archive.archived_files.items() if b"data.tar" in k][0]
# ArchiveFileData is not enough like a file object for tarfile to use.
# Monkey-patching a seekable method makes it close enough for TarFile to open.
data_tar_arpy.seekable = lambda *args: True
tar = tarfile.open(fileobj=data_tar_arpy, mode="r:*")
yield tar
def setup():
return DebSource
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