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# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
import six
def parse_checksums_file(checksums):
"""
Parses checksums files that the build system generates and uploads:
https://hg.mozilla.org/mozilla-central/file/default/build/checksums.py
"""
fileInfo = {}
for line in checksums.splitlines():
hash_, type_, size, file_ = line.split(None, 3)
type_ = six.ensure_str(type_)
file_ = six.ensure_str(file_)
size = int(size)
if size < 0:
raise ValueError("Found negative value (%d) for size." % size)
if file_ not in fileInfo:
fileInfo[file_] = {"hashes": {}}
# If the file already exists, make sure that the size matches the
# previous entry.
elif fileInfo[file_]["size"] != size:
raise ValueError(
"Found different sizes for same file %s (%s and %s)"
% (file_, fileInfo[file_]["size"], size)
)
# Same goes for the hash.
elif (
type_ in fileInfo[file_]["hashes"]
and fileInfo[file_]["hashes"][type_] != hash_
):
raise ValueError(
"Found different %s hashes for same file %s (%s and %s)"
% (type_, file_, fileInfo[file_]["hashes"][type_], hash_)
)
fileInfo[file_]["size"] = size
fileInfo[file_]["hashes"][type_] = hash_
return fileInfo
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