40 lines
1.3 KiB
Python
40 lines
1.3 KiB
Python
import hashlib
|
|
from pathlib import Path
|
|
from typing import Iterable, Union
|
|
|
|
import srsly
|
|
from wasabi import msg
|
|
|
|
|
|
def get_hash(data, exclude: Iterable[str] = tuple()) -> str:
|
|
"""Get the hash for a JSON-serializable object.
|
|
|
|
data: The data to hash.
|
|
exclude (Iterable[str]): Top-level keys to exclude if data is a dict.
|
|
RETURNS (str): The hash.
|
|
"""
|
|
if isinstance(data, dict):
|
|
data = {k: v for k, v in data.items() if k not in exclude}
|
|
data_str = srsly.json_dumps(data, sort_keys=True).encode("utf8")
|
|
return hashlib.md5(data_str).hexdigest()
|
|
|
|
|
|
def get_checksum(path: Union[Path, str]) -> str:
|
|
"""Get the checksum for a file or directory given its file path. If a
|
|
directory path is provided, this uses all files in that directory.
|
|
|
|
path (Union[Path, str]): The file or directory path.
|
|
RETURNS (str): The checksum.
|
|
"""
|
|
path = Path(path)
|
|
if not (path.is_file() or path.is_dir()):
|
|
msg.fail(f"Can't get checksum for {path}: not a file or directory", exits=1)
|
|
if path.is_file():
|
|
return hashlib.md5(Path(path).read_bytes()).hexdigest()
|
|
else:
|
|
# TODO: this is currently pretty slow
|
|
dir_checksum = hashlib.md5()
|
|
for sub_file in sorted(fp for fp in path.rglob("*") if fp.is_file()):
|
|
dir_checksum.update(sub_file.read_bytes())
|
|
return dir_checksum.hexdigest()
|