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# objects.py
# Copyright (C) 2008, 2009 Michael Trier (mtrier@gmail.com) and contributors
#
# This module is part of GitPython and is released under
# the BSD License: http://www.opensource.org/licenses/bsd-license.php
""" Module containing all object based types. """
import base
from gitdb.util import hex_to_bin
from util import (
get_object_type_by_name,
parse_actor_and_date
)
__all__ = ("TagObject", )
class TagObject(base.Object):
"""Non-Lightweight tag carrying additional information about an object we are pointing to."""
type = "tag"
__slots__ = ( "object", "tag", "tagger", "tagged_date", "tagger_tz_offset", "message" )
def __init__(self, repo, binsha, object=None, tag=None,
tagger=None, tagged_date=None, tagger_tz_offset=None, message=None):
"""Initialize a tag object with additional data
:param repo: repository this object is located in
:param binsha: 20 byte SHA1
:param object: Object instance of object we are pointing to
:param tag: name of this tag
:param tagger: Actor identifying the tagger
:param tagged_date: int_seconds_since_epoch
is the DateTime of the tag creation - use time.gmtime to convert
it into a different format
:param tagged_tz_offset: int_seconds_west_of_utc is the timezone that the
authored_date is in, in a format similar to time.altzone"""
super(TagObject, self).__init__(repo, binsha )
if object is not None:
self.object = object
if tag is not None:
self.tag = tag
if tagger is not None:
self.tagger = tagger
if tagged_date is not None:
self.tagged_date = tagged_date
if tagger_tz_offset is not None:
self.tagger_tz_offset = tagger_tz_offset
if message is not None:
self.message = message
def _set_cache_(self, attr):
"""Cache all our attributes at once"""
if attr in TagObject.__slots__:
ostream = self.repo.odb.stream(self.binsha)
lines = ostream.read().splitlines()
obj, hexsha = lines[0].split(" ") # object <hexsha>
type_token, type_name = lines[1].split(" ") # type <type_name>
self.object = get_object_type_by_name(type_name)(self.repo, hex_to_bin(hexsha))
self.tag = lines[2][4:] # tag <tag name>
tagger_info = lines[3]# tagger <actor> <date>
self.tagger, self.tagged_date, self.tagger_tz_offset = parse_actor_and_date(tagger_info)
# line 4 empty - it could mark the beginning of the next header
# in case there really is no message, it would not exist. Otherwise
# a newline separates header from message
if len(lines) > 5:
self.message = "\n".join(lines[5:])
else:
self.message = ''
# END check our attributes
else:
super(TagObject, self)._set_cache_(attr)
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