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util.py
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util.py
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from datetime import date
from importlib import resources
import hashlib
def _compute_hash(string):
hasher = hashlib.md5()
hasher.update(string)
return hasher.hexdigest()
def compute_resource_hash(resource_fn):
with resources.open_binary("resources", resource_fn) as f:
return _compute_hash(f.read())
def compute_file_hash(path):
with open(path, "r") as f:
while True:
hash_line = f.readline()
if hash_line.startswith("# Hash:"):
break
stored_hash = hash_line.strip().split("\t")[1]
computed_hash = _compute_hash(f.read().encode('ascii'))
return stored_hash, computed_hash
GENERATED_MESSAGE = f"""\
# Invoker: v0.0.1
# DO NOT MANUALLY EDIT THIS FILE.
#
# This script was generated with invoker.
# To regenerate file, run `invoker rebuild`.
# Date:\t{date.today().strftime("%d/%m/%Y")}
"""
def copy_resource(src_fn, dst_path, sign=False, preprocess_fn=lambda l: l):
with resources.open_binary("resources", src_fn) as f:
file_hash = _compute_hash(f.read())
with resources.open_text("resources", src_fn) as inf, open(dst_path, "w") as outf:
if sign:
outf.write(GENERATED_MESSAGE)
outf.write(f"# Hash:\t{file_hash}\n")
for line in inf:
outf.write(preprocess_fn(line))
def to_camel_case(string):
return "".join([token.capitalize() for token in string.split("_")])