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75 lines
2.4 KiB
Python
75 lines
2.4 KiB
Python
# reflog.py -- Parsing and writing reflog files
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# Copyright (C) 2015 Jelmer Vernooij and others.
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#
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# Dulwich is dual-licensed under the Apache License, Version 2.0 and the GNU
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# General Public License as public by the Free Software Foundation; version 2.0
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# or (at your option) any later version. You can redistribute it and/or
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# modify it under the terms of either of these two licenses.
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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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#
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# You should have received a copy of the licenses; if not, see
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# <http://www.gnu.org/licenses/> for a copy of the GNU General Public License
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# and <http://www.apache.org/licenses/LICENSE-2.0> for a copy of the Apache
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# License, Version 2.0.
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#
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"""Utilities for reading and generating reflogs.
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"""
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import collections
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from dulwich.objects import (
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format_timezone,
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parse_timezone,
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ZERO_SHA,
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)
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Entry = collections.namedtuple('Entry', ['old_sha', 'new_sha', 'committer',
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'timestamp', 'timezone', 'message'])
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def format_reflog_line(old_sha, new_sha, committer, timestamp, timezone, message):
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"""Generate a single reflog line.
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:param old_sha: Old Commit SHA
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:param new_sha: New Commit SHA
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:param committer: Committer name and e-mail
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:param timestamp: Timestamp
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:param timezone: Timezone
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:param message: Message
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"""
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if old_sha is None:
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old_sha = ZERO_SHA
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return (old_sha + b' ' + new_sha + b' ' + committer + b' ' +
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str(timestamp).encode('ascii') + b' ' +
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format_timezone(timezone) + b'\t' + message)
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def parse_reflog_line(line):
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"""Parse a reflog line.
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:param line: Line to parse
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:return: Tuple of (old_sha, new_sha, committer, timestamp, timezone,
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message)
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"""
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(begin, message) = line.split(b'\t', 1)
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(old_sha, new_sha, rest) = begin.split(b' ', 2)
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(committer, timestamp_str, timezone_str) = rest.rsplit(b' ', 2)
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return Entry(old_sha, new_sha, committer, int(timestamp_str),
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parse_timezone(timezone_str)[0], message)
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def read_reflog(f):
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"""Read reflog.
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:param f: File-like object
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:returns: Iterator over Entry objects
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"""
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for l in f:
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yield parse_reflog_line(l)
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