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# MIT licensed
# Copyright (c) 2023 Pekka Ristola <pekkarr [at] protonmail [dot] com>, et al.
from asyncio import create_subprocess_exec
from asyncio.subprocess import PIPE
import re
from typing import Tuple, List
from nvchecker.api import GetVersionError
async def get_files(info: Tuple[str, str]) -> List[str]:
dbpath, pkg = info
# there's no pyalpm bindings for the file databases
cmd = ['pacman', '-Flq', '--dbpath', dbpath, pkg]
p = await create_subprocess_exec(*cmd, stdout = PIPE, stderr = PIPE)
stdout, stderr = await p.communicate()
if p.returncode == 0:
return stdout.decode().splitlines()
else:
raise GetVersionError(
'pacman failed to get file list',
pkg = pkg,
cmd = cmd,
stdout = stdout.decode(errors='replace'),
stderr = stderr.decode(errors='replace'),
returncode = p.returncode,
)
async def get_version(name, conf, *, cache, **kwargs):
pkg = conf['pkgname']
repo = conf.get('repo')
if repo is not None:
pkg = f'{repo}/{pkg}'
dbpath = conf.get('dbpath', '/var/lib/pacman')
regex = re.compile(conf['filename'])
if regex.groups > 1:
raise GetVersionError('multi-group regex')
strip_dir = conf.get('strip_dir', False)
files = await cache.get((dbpath, pkg), get_files)
for f in files:
fn = f.rsplit('/', 1)[-1] if strip_dir else f
match = regex.fullmatch(fn)
if match:
groups = match.groups()
return groups[0] if len(groups) > 0 else fn
raise GetVersionError('no file matches specified regex')
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