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import re
from pathlib import Path
from shutil import copy2
from typing import List
from .repo import Repo
class Config:
def __init__(self, target: Path):
self.path = Path("/etc") / "pacman.conf"
self.chroot_path = target / "etc" / "pacman.conf"
self.repos: List[Repo] = []
def enable(self, repo: Repo):
self.repos.append(repo)
def apply(self):
if not self.repos:
return
if Repo.Testing in self.repos:
if Repo.Multilib in self.repos:
repos_pattern = f'({Repo.Multilib.value}|.+-{Repo.Testing.value})'
else:
repos_pattern = f'(?!{Repo.Multilib.value}).+-{Repo.Testing.value}'
else:
repos_pattern = Repo.Multilib.value
pattern = re.compile(rf"^#\s*\[{repos_pattern}\]$")
lines = iter(self.path.read_text().splitlines(keepends=True))
with open(self.path, 'w') as f:
for line in lines:
if pattern.match(line):
# Uncomment this line and the next.
f.write(line.lstrip('#'))
f.write(next(lines).lstrip('#'))
else:
f.write(line)
def persist(self):
if self.repos:
copy2(self.path, self.chroot_path)
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