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#!/usr/bin/python3
#
"""Script to sort kernel versions."""
import apt_pkg
import argparse
import re
import sys
import os
import typing
def order_index(order: list[re.Pattern[str]], abi: str) -> int:
"""Return the index of abi in order"""
for i, entry in zip(range(len(order)), order):
if entry.match(abi):
return i
return len(order)
class KernelABI:
"""Orderable kernel ABI string."""
def __init__(self, abi: str, order: list[re.Pattern[str]]):
self.abi = abi
self._index = order_index(order, self.abi)
def __lt__(self, other: "KernelABI") -> bool:
if self._index != other._index:
# Ordering is reversed, what should be considered highest comes first.
return self._index > other._index
return apt_pkg.version_compare(f"{self.abi}-0", f"{other.abi}-0") < 0
def main() -> None:
"""Entry point."""
apt_pkg.init()
parser = argparse.ArgumentParser(
prog="grub-sort-version", description="sort kernel ABIs"
)
parser.add_argument("-r", "--reverse", action="store_true")
args = parser.parse_args()
order = []
for flavour in os.environ.get("GRUB_FLAVOUR_ORDER", "").split():
order.append(re.compile(f"[\\s\\S]*-{flavour}(\\s*\\d*)$"))
versions = [KernelABI(line.rstrip(), order) for line in sys.stdin]
versions.sort(reverse=args.reverse)
for v in versions:
print(v.abi)
if __name__ == "__main__":
main()
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