mirror of
https://github.com/python/cpython.git
synced 2025-10-31 13:41:24 +00:00
68 lines
1.8 KiB
Python
68 lines
1.8 KiB
Python
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()
|
|
|
|
# suppress spurious error from mypy
|
|
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)))
|