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osm_map_processing/pymapsforge/md5_map.py

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# Copyright 2018 Mike "KemoNine" Crosson
# 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.
# Borrowed from the web: https://www.joelverhagen.com/blog/2011/02/md5-hash-of-file-in-python/
import hashlib
def md5Checksum(filePath):
with open(filePath, 'rb') as fh:
m = hashlib.md5()
while True:
data = fh.read(8192)
if not data:
break
m.update(data)
return m.hexdigest()
def check_hash(map_file, md5_file):
published_md5 = None
with open(md5_file, 'r') as f:
published_md5 = f.readline().strip().split()[0]
map_md5 = md5Checksum(map_file)
return published_md5 == map_md5