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#!/usr/bin/env python3
#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you 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.
# Rename a bunch of corpus files to their SHA1 hashes, and
# pack them into a ZIP archive.
import hashlib
from pathlib import Path
import sys
import zipfile
def process_dir(corpus_dir, zip_output):
seen_hashes = {}
for child in sorted(corpus_dir.iterdir()):
if not child.is_file():
raise IOError(f"Not a file: {child}")
with child.open('rb') as f:
data = f.read()
arcname = hashlib.sha1(data).hexdigest()
if arcname in seen_hashes:
raise ValueError(
f"Duplicate hash: {arcname} (in file {child}), "
f"already seen in file {seen_hashes[arcname]}")
print(f" {child} -> {arcname}")
zip_output.writestr(str(arcname), data)
seen_hashes[arcname] = child
def main(corpus_dir, zip_output_name):
with zipfile.ZipFile(zip_output_name, 'w') as zip_output:
process_dir(Path(corpus_dir), zip_output)
if __name__ == "__main__":
if len(sys.argv) != 3:
print(f"Usage: {sys.argv[0]} <corpus dir> <output zip file>")
sys.exit(1)
main(sys.argv[1], sys.argv[2])
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