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from __future__ import annotations
import os
from pathlib import Path
from typing import TYPE_CHECKING
if TYPE_CHECKING:
from . import _types as _t
from . import Configuration
from .utils import data_from_mime
from ._trace import trace
from .version import meta
from .version import ScmVersion
from .version import tag_to_version
_UNKNOWN = "UNKNOWN"
def parse_pkginfo(root: _t.PathT, config: Configuration) -> ScmVersion | None:
pkginfo = Path(root) / "PKG-INFO"
trace("pkginfo", pkginfo)
data = data_from_mime(pkginfo)
version = data.get("Version", _UNKNOWN)
if version != _UNKNOWN:
return meta(version, preformatted=True, config=config)
else:
return None
def fallback_version(root: _t.PathT, config: Configuration) -> ScmVersion | None:
if config.parentdir_prefix_version is not None:
_, parent_name = os.path.split(os.path.abspath(root))
if parent_name.startswith(config.parentdir_prefix_version):
version = tag_to_version(
parent_name[len(config.parentdir_prefix_version) :], config
)
if version is not None:
return meta(str(version), preformatted=True, config=config)
if config.fallback_version is not None:
trace("FALLBACK")
return meta(config.fallback_version, preformatted=True, config=config)
return None
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