| | import re |
| | import textwrap |
| | import email.message |
| |
|
| | from ._text import FoldedCase |
| |
|
| |
|
| | class Message(email.message.Message): |
| | multiple_use_keys = set( |
| | map( |
| | FoldedCase, |
| | [ |
| | 'Classifier', |
| | 'Obsoletes-Dist', |
| | 'Platform', |
| | 'Project-URL', |
| | 'Provides-Dist', |
| | 'Provides-Extra', |
| | 'Requires-Dist', |
| | 'Requires-External', |
| | 'Supported-Platform', |
| | 'Dynamic', |
| | ], |
| | ) |
| | ) |
| | """ |
| | Keys that may be indicated multiple times per PEP 566. |
| | """ |
| |
|
| | def __new__(cls, orig: email.message.Message): |
| | res = super().__new__(cls) |
| | vars(res).update(vars(orig)) |
| | return res |
| |
|
| | def __init__(self, *args, **kwargs): |
| | self._headers = self._repair_headers() |
| |
|
| | |
| | def __iter__(self): |
| | return super().__iter__() |
| |
|
| | def _repair_headers(self): |
| | def redent(value): |
| | "Correct for RFC822 indentation" |
| | if not value or '\n' not in value: |
| | return value |
| | return textwrap.dedent(' ' * 8 + value) |
| |
|
| | headers = [(key, redent(value)) for key, value in vars(self)['_headers']] |
| | if self._payload: |
| | headers.append(('Description', self.get_payload())) |
| | return headers |
| |
|
| | @property |
| | def json(self): |
| | """ |
| | Convert PackageMetadata to a JSON-compatible format |
| | per PEP 0566. |
| | """ |
| |
|
| | def transform(key): |
| | value = self.get_all(key) if key in self.multiple_use_keys else self[key] |
| | if key == 'Keywords': |
| | value = re.split(r'\s+', value) |
| | tk = key.lower().replace('-', '_') |
| | return tk, value |
| |
|
| | return dict(map(transform, map(FoldedCase, self))) |
| |
|
