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# Copyright 2015 The Bazel Authors. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""A simple cross-platform helper to create a dummy debian package."""
from StringIO import StringIO
import sys
import tarfile
def AddArFileEntry(fileobj, filename, content=''):
"""Add a AR file entry to fileobj."""
fileobj.write((filename + '/').ljust(16)) # filename (SysV)
fileobj.write('0'.ljust(12)) # timestamp
fileobj.write('0'.ljust(6)) # owner id
fileobj.write('0'.ljust(6)) # group id
fileobj.write('0644'.ljust(8)) # mode
fileobj.write(str(len(content)).ljust(10)) # size
fileobj.write('\x60\x0a') # end of file entry
fileobj.write(content)
if len(content) % 2 != 0:
fileobj.write('\n') # 2-byte alignment padding
if __name__ == '__main__':
# Create data.tar
tar = StringIO()
with tarfile.open('data.tar', mode='w', fileobj=tar) as f:
tarinfo = tarfile.TarInfo('usr/')
tarinfo.type = tarfile.DIRTYPE
f.addfile(tarinfo)
tarinfo = tarfile.TarInfo('usr/titi')
f.addfile(tarinfo, fileobj=StringIO('toto\n'))
data = tar.getvalue()
tar.close()
# Create control.tar
tar = StringIO()
with tarfile.open('control.tar', mode='w', fileobj=tar) as f:
tarinfo = tarfile.TarInfo('control')
f.addfile(tarinfo, fileobj=StringIO('\n'.join([
'Package: test'
'Description: Just a dummy test'
])))
control = tar.getvalue()
tar.close()
# Write the final AR archive (the deb package)
with open(sys.argv[1], 'w') as f:
f.write('!<arch>\n') # Magic AR header
AddArFileEntry(f, 'debian-binary', '2.0')
AddArFileEntry(f, 'control.tar', control)
AddArFileEntry(f, 'data.tar', data)
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