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converters.py
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converters.py
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# Copyright (C) 2015-2020 The Software Heritage developers
# See the AUTHORS file at the top-level directory of this distribution
# License: GNU General Public License version 3, or any later version
# See top-level LICENSE file for more information
import datetime
from typing import Dict, Optional, Sequence, Tuple
import iso8601
from swh.model.model import Person, Revision, RevisionType, TimestampWithTimezone
def svn_date_to_swh_date(strdate: Optional[bytes]) -> TimestampWithTimezone:
"""Convert a string date to an swh one.
Args:
strdate: A string representing a date with format like
``b'YYYY-mm-DDTHH:MM:SS.800722Z'``
Returns:
An swh date format
"""
if not strdate: # either None or empty string
dt = datetime.datetime(1970, 1, 1, tzinfo=datetime.timezone.utc)
else:
dt = iso8601.parse_date(strdate.decode("ascii"))
assert dt.tzinfo is not None, strdate
return TimestampWithTimezone.from_datetime(dt)
def svn_author_to_swh_person(author: Optional[bytes]) -> Person:
"""Convert an svn author to an swh person.
Default policy: No information is added.
Args:
author: the svn author (in bytes)
Returns:
a Person
"""
return Person.from_fullname(author or b"")
def build_swh_revision(
rev: int, commit: Dict, repo_uuid: bytes, dir_id: bytes, parents: Sequence[bytes]
) -> Revision:
"""Given a svn revision, build a swh revision.
This adds an 'extra-headers' entry with the
repository's uuid and the svn revision.
Args:
rev: the svn revision number
commit: the commit data: revision id, date, author, and message
repo_uuid: The repository's uuid
dir_id: the tree's hash identifier
parents: the revision's parents identifier
Returns:
The swh revision dictionary.
"""
author = commit["author_name"]
msg = commit["message"]
date = commit["author_date"]
extra_headers: Tuple[Tuple[bytes, bytes], ...] = (
(b"svn_repo_uuid", repo_uuid),
(b"svn_revision", str(rev).encode()),
)
return Revision(
type=RevisionType.SUBVERSION,
date=date,
committer_date=date,
directory=dir_id,
message=msg,
author=author,
committer=author,
synthetic=True,
extra_headers=extra_headers,
parents=tuple(parents),
)

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