def chunked_hasher(hash_object: HASH, file_handle) -> str:
"""Calculate the hash of a file without reading it into memory completely"""
while True:
data = file_handle.read(BUF_SIZE)
if not data:
break
hash_object.update(data)
return hash_object.hexdigest()
def get_sha1_hash_from_dir(directory: Union[str, Path],
hash: Hash = None) -> str:
assert Path(directory).is_dir()
if hash is None:
hash = hashlib.sha1()
for path in sorted(Path(directory).iterdir()):
hash.update(path.name.encode())
if path.is_file():
hash = get_sha1_from_file(path, hash)
elif path.is_dir():
hash = get_sha1_hash_from_dir(path, hash)
return hash.hexdigest()
