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92 lines
3.0 KiB
92 lines
3.0 KiB
4 years ago
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# Copyright 2013 Donald Stufft
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# https://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import io
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import os
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import re
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import zipfile
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from typing import List, Optional
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from pkginfo import distribution
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from twine import exceptions
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# Monkeypatch Metadata 2.0 support
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distribution.HEADER_ATTRS_2_0 = distribution.HEADER_ATTRS_1_2
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distribution.HEADER_ATTRS.update({"2.0": distribution.HEADER_ATTRS_2_0})
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wheel_file_re = re.compile(
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r"""^(?P<namever>(?P<name>.+?)(-(?P<ver>\d.+?))?)
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((-(?P<build>\d.*?))?-(?P<pyver>.+?)-(?P<abi>.+?)-(?P<plat>.+?)
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\.whl|\.dist-info)$""",
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re.VERBOSE,
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)
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class Wheel(distribution.Distribution):
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def __init__(self, filename: str, metadata_version: Optional[str] = None) -> None:
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self.filename = filename
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self.basefilename = os.path.basename(self.filename)
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self.metadata_version = metadata_version
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self.extractMetadata()
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@property
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def py_version(self) -> str:
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wheel_info = wheel_file_re.match(self.basefilename)
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if wheel_info is None:
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return "any"
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else:
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return wheel_info.group("pyver")
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@staticmethod
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def find_candidate_metadata_files(names: List[str]) -> List[List[str]]:
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"""Filter files that may be METADATA files."""
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tuples = [x.split("/") for x in names if "METADATA" in x]
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return [x[1] for x in sorted([(len(x), x) for x in tuples])]
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def read(self) -> bytes:
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fqn = os.path.abspath(os.path.normpath(self.filename))
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if not os.path.exists(fqn):
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raise exceptions.InvalidDistribution("No such file: %s" % fqn)
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if fqn.endswith(".whl"):
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archive = zipfile.ZipFile(fqn)
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names = archive.namelist()
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def read_file(name: str) -> bytes:
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return archive.read(name)
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else:
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raise exceptions.InvalidDistribution(
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"Not a known archive format for file: %s" % fqn
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)
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try:
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for path in self.find_candidate_metadata_files(names):
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candidate = "/".join(path)
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data = read_file(candidate)
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if b"Metadata-Version" in data:
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return data
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finally:
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archive.close()
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raise exceptions.InvalidDistribution("No METADATA in archive: %s" % fqn)
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def parse(self, data: bytes) -> None:
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super().parse(data)
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fp = io.StringIO(distribution.must_decode(data))
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msg = distribution.parse(fp)
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self.description = msg.get_payload()
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