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# Copyright (C) 2022 The Software Heritage developers
# See the AUTHORS file at the top-level directory of this distribution
# License: GNU General Public License version 3, or any later version
# See top-level LICENSE file for more information
from distutils.version import LooseVersion
from pathlib import Path
import re
from typing import Any, Dict, Iterator, List, Optional, Sequence, Tuple
import attr
from swh.loader.package.loader import BasePackageInfo, PackageLoader
from swh.loader.package.utils import EMPTY_AUTHOR, release_name
from swh.model.model import ObjectType, Release, Sha1Git, TimestampWithTimezone
from swh.storage.interface import StorageInterface
@attr.s
class AurPackageInfo(BasePackageInfo):
name = attr.ib(type=str)
"""Name of the package"""
version = attr.ib(type=str)
"""Current version"""
last_modified = attr.ib(type=str)
"""File last modified date as release date"""
def extract_intrinsic_metadata(dir_path: Path) -> Dict[str, Any]:
"""Extract intrinsic metadata from .SRCINFO file at dir_path.
Each Aur package has a .SRCINFO file at the root of the archive.
Args:
dir_path: A directory on disk where a package has been extracted
Returns:
A dict mapping
"""
assert dir_path.exists()
# top directory from extracted archive is always named with the package name
(pkgname,) = [elt.name for elt in dir_path.iterdir() if elt.is_dir()]
srcinfo_path = Path(dir_path, pkgname, ".SRCINFO")
rex = re.compile(r"^(\w+)\s=\s(.*)$", re.M)
with srcinfo_path.open("r") as content:
# Except first and last line, lines may starts with a tab, remove them
srcinfo = content.read().replace("\t", "")
parsed = rex.findall(srcinfo)
data: Dict[str, Any] = {}
for (k, v) in parsed:
if k in data:
if type(data[k]) is not list:
data[k] = [data[k]]
data[k].append(v)
else:
data[k] = v
return data
class AurLoader(PackageLoader[AurPackageInfo]):
visit_type = "aur"
def __init__(
self,
storage: StorageInterface,
url: str,
artifacts: List[Dict[str, Any]],
aur_metadata: List[Dict[str, Any]],
**kwargs,
):
super().__init__(storage=storage, url=url, **kwargs)
self.url = url
self.artifacts: Dict[str, Dict] = {
artifact["version"]: artifact for artifact in artifacts
}
self.aur_metadata: Dict[str, Dict] = {
meta["version"]: meta for meta in aur_metadata
}
def get_versions(self) -> Sequence[str]:
"""Get all released versions of an Aur package
Returns:
A sequence of versions
Example::
["0.1.1", "0.10.2"]
"""
versions = list(self.artifacts)
versions.sort(key=LooseVersion)
return versions
def get_default_version(self) -> str:
"""Get the newest release version of an Aur package
Returns:
A string representing a version
Example::
"0.1.2"
"""
return self.get_versions()[-1]
def get_package_info(self, version: str) -> Iterator[Tuple[str, AurPackageInfo]]:
"""Get release name and package information from version
Args:
version: aur version (e.g: "0.1.0")
Returns:
Iterator of tuple (release_name, p_info)
"""
artifact = self.artifacts[version]
assert version == artifact["version"]
data = self.aur_metadata[version]
url = artifact["url"]
filename = artifact["filename"]
p_info = AurPackageInfo(
name=data["pkgname"],
filename=filename,
url=url,
version=version,
last_modified=data["last_update"],
)
yield release_name(version, filename), p_info
def build_release(
self, p_info: AurPackageInfo, uncompressed_path: str, directory: Sha1Git
) -> Optional[Release]:
intrinsic_metadata = extract_intrinsic_metadata(Path(uncompressed_path))
author = EMPTY_AUTHOR
description: str = ""
assert intrinsic_metadata["pkgdesc"]
if type(intrinsic_metadata["pkgdesc"]) is list:
description = "\n".join(intrinsic_metadata["pkgdesc"])
else:
description = intrinsic_metadata["pkgdesc"]
message = (
f"Synthetic release for Aur source package {p_info.name} "
f"version {p_info.version}\n\n"
f"{description}\n"
)
return Release(
name=p_info.version.encode(),
author=author,
date=TimestampWithTimezone.from_iso8601(p_info.last_modified),
message=message.encode(),
target_type=ObjectType.DIRECTORY,
target=directory,
synthetic=True,
)

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