You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
85 lines
2.5 KiB
85 lines
2.5 KiB
# Extracted from https://github.com/pfmoore/pkg_metadata
|
|
|
|
from email.header import Header, decode_header, make_header
|
|
from email.message import Message
|
|
from typing import Any, Dict, List, Union
|
|
|
|
METADATA_FIELDS = [
|
|
# Name, Multiple-Use
|
|
("Metadata-Version", False),
|
|
("Name", False),
|
|
("Version", False),
|
|
("Dynamic", True),
|
|
("Platform", True),
|
|
("Supported-Platform", True),
|
|
("Summary", False),
|
|
("Description", False),
|
|
("Description-Content-Type", False),
|
|
("Keywords", False),
|
|
("Home-page", False),
|
|
("Download-URL", False),
|
|
("Author", False),
|
|
("Author-email", False),
|
|
("Maintainer", False),
|
|
("Maintainer-email", False),
|
|
("License", False),
|
|
("Classifier", True),
|
|
("Requires-Dist", True),
|
|
("Requires-Python", False),
|
|
("Requires-External", True),
|
|
("Project-URL", True),
|
|
("Provides-Extra", True),
|
|
("Provides-Dist", True),
|
|
("Obsoletes-Dist", True),
|
|
]
|
|
|
|
|
|
def json_name(field: str) -> str:
|
|
return field.lower().replace("-", "_")
|
|
|
|
|
|
def msg_to_json(msg: Message) -> Dict[str, Any]:
|
|
"""Convert a Message object into a JSON-compatible dictionary."""
|
|
|
|
def sanitise_header(h: Union[Header, str]) -> str:
|
|
if isinstance(h, Header):
|
|
chunks = []
|
|
for bytes, encoding in decode_header(h):
|
|
if encoding == "unknown-8bit":
|
|
try:
|
|
# See if UTF-8 works
|
|
bytes.decode("utf-8")
|
|
encoding = "utf-8"
|
|
except UnicodeDecodeError:
|
|
# If not, latin1 at least won't fail
|
|
encoding = "latin1"
|
|
chunks.append((bytes, encoding))
|
|
return str(make_header(chunks))
|
|
return str(h)
|
|
|
|
result = {}
|
|
for field, multi in METADATA_FIELDS:
|
|
if field not in msg:
|
|
continue
|
|
key = json_name(field)
|
|
if multi:
|
|
value: Union[str, List[str]] = [
|
|
sanitise_header(v) for v in msg.get_all(field)
|
|
]
|
|
else:
|
|
value = sanitise_header(msg.get(field))
|
|
if key == "keywords":
|
|
# Accept both comma-separated and space-separated
|
|
# forms, for better compatibility with old data.
|
|
if "," in value:
|
|
value = [v.strip() for v in value.split(",")]
|
|
else:
|
|
value = value.split()
|
|
result[key] = value
|
|
|
|
payload = msg.get_payload()
|
|
if payload:
|
|
result["description"] = payload
|
|
|
|
return result
|