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