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15e26caa23
- updated unittests - implemented create/delete/restore remote archives Reviewed-by: James Valleroy <jvalleroy@mailbox.org>
48 lines
1.5 KiB
Python
48 lines
1.5 KiB
Python
#
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# This file is part of FreedomBox.
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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import gzip
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from io import BytesIO
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class ZipStream(object):
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"""Zip a stream that yields binary data"""
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def __init__(self, stream, get_chunk_method):
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"""
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- stream: the input stream
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- get_chunk_method: name of the method to get a chunk of the stream
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"""
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self.stream = stream
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self.buffer = BytesIO()
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self.zipfile = gzip.GzipFile(mode='wb', fileobj=self.buffer)
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self.get_chunk = getattr(self.stream, get_chunk_method)
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def __next__(self):
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line = self.get_chunk()
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if not len(line):
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raise StopIteration
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self.zipfile.write(line)
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self.zipfile.flush()
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zipped = self.buffer.getvalue()
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self.buffer.truncate(0)
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self.buffer.seek(0)
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return zipped
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def __iter__(self):
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return self
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