Add --min-size option to copyright.py

Check if the given files contain a copyright notice mentioning the current year

"""

import argparse

import os

import re

import sys

import time

from typing import List

def check_file(path: str, year: str) -> bool:

def check_file(path: Path, year: str, min_size: int) -> bool:

	"""

	Check for an up-to-date copyright notice in the first few lines of the given file

	"""

	with open(path) as file:

	with path.open() as file:

		if os.fstat(file.fileno()).st_size < min_size:

			return True

		lines = file.read(512)

	return bool(re.search(f'\\b(?:copyright)\\b.*\\b{year}\\b', lines, re.I))

	return (Path(p.decode()) for p in paths.split(b'\x00') if p != b'')

def cli_parser() -> argparse.ArgumentParser:

	"""

	Return an argparse parser

	"""

	parser = argparse.ArgumentParser()

	parser.add_argument(

		'--min-size', '-m',

		type=int,

		default=-1,

		help="Minimum file size to check, anything smaller will be ignored",

	)

	parser.add_argument('files', nargs='+', type=Path)

	return parser

def main():

	"""

	CLI entrypoint

	"""

	paths = filter_excluded(Path(arg) for arg in sys.argv[1:])

	opts = cli_parser().parse_args()

	paths = filter_excluded(opts.files)

	year = time.strftime('%Y')

	years = {path: year for path in paths if path.is_file()}

	missing = []

	for path in paths:

		if path.is_file() and not check_file(path, years[path]):

		if path.is_file() and not check_file(path, years[path], opts.min_size):

			missing.append(path)

	if missing: