20
class RevisionReference(object):
22
Reference to a stored revision.
24
Includes the revision_id and revision_sha1.
28
def __init__(self, revision_id, revision_sha1):
29
if revision_id == None \
30
or isinstance(revision_id, basestring):
31
self.revision_id = revision_id
33
raise ValueError('bad revision_id %r' % revision_id)
35
if revision_sha1 != None:
36
if isinstance(revision_sha1, basestring) \
37
and len(revision_sha1) == 40:
38
self.revision_sha1 = revision_sha1
40
raise ValueError('bad revision_sha1 %r' % revision_sha1)
44
class Revision(object):
20
from xml import XMLMixin
23
from cElementTree import Element, ElementTree, SubElement
25
from elementtree.ElementTree import Element, ElementTree, SubElement
27
from errors import BzrError
30
class Revision(XMLMixin):
45
31
"""Single revision on a branch.
47
33
Revisions may know their revision_hash, but only once they've been
48
34
written out. This is not stored because you cannot write the hash
49
35
into the file it describes.
51
After bzr 0.0.5 revisions are allowed to have multiple parents.
52
To support old clients this is written out in a slightly redundant
53
form: the first parent as the predecessor. This will eventually
57
List of parent revisions, each is a RevisionReference.
37
TODO: Perhaps make predecessor be a child element, not an attribute?
67
39
def __init__(self, **args):
40
self.inventory_id = None
41
self.revision_id = None
68
47
self.__dict__.update(args)
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def _get_precursor(self):
72
from warnings import warn
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warn("Revision.precursor is deprecated", stacklevel=2)
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return self.parents[0].revision_id
80
def _get_precursor_sha1(self):
81
from warnings import warn
82
warn("Revision.precursor_sha1 is deprecated", stacklevel=2)
84
return self.parents[0].revision_sha1
90
raise Exception("can't assign to precursor anymore")
93
precursor = property(_get_precursor, _fail, _fail)
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precursor_sha1 = property(_get_precursor_sha1, _fail, _fail)
98
50
def __repr__(self):
102
54
def to_element(self):
103
from bzrlib.xml import Element, SubElement
105
55
root = Element('revision',
106
56
committer = self.committer,
107
57
timestamp = '%.9f' % self.timestamp,
108
58
revision_id = self.revision_id,
109
59
inventory_id = self.inventory_id,
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inventory_sha1 = self.inventory_sha1,
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root.set('timezone', str(self.timezone))
60
timezone = str(self.timezone))
62
root.set('precursor', self.precursor)
116
65
msg = SubElement(root, 'message')
117
66
msg.text = self.message
121
# first parent stored as precursor for compatability with 0.0.5 and
124
assert pr.revision_id
125
root.set('precursor', pr.revision_id)
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root.set('precursor_sha1', pr.revision_sha1)
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pelts = SubElement(root, 'parents')
131
pelts.tail = pelts.text = '\n'
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for rr in self.parents:
133
assert isinstance(rr, RevisionReference)
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p = SubElement(pelts, 'revision_ref')
136
assert rr.revision_id
137
p.set('revision_id', rr.revision_id)
139
p.set('revision_sha1', rr.revision_sha1)
144
72
def from_element(cls, elt):
145
return unpack_revision(elt)
73
# <changeset> is deprecated...
74
if elt.tag not in ('revision', 'changeset'):
75
raise BzrError("unexpected tag in revision file: %r" % elt)
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cs = cls(committer = elt.get('committer'),
78
timestamp = float(elt.get('timestamp')),
79
precursor = elt.get('precursor'),
80
revision_id = elt.get('revision_id'),
81
inventory_id = elt.get('inventory_id'))
83
v = elt.get('timezone')
84
cs.timezone = v and int(v)
86
cs.message = elt.findtext('message') # text of <message>
147
89
from_element = classmethod(from_element)
151
def unpack_revision(elt):
152
"""Convert XML element into Revision object."""
153
# <changeset> is deprecated...
154
from bzrlib.errors import BzrError
156
if elt.tag not in ('revision', 'changeset'):
157
raise BzrError("unexpected tag in revision file: %r" % elt)
159
rev = Revision(committer = elt.get('committer'),
160
timestamp = float(elt.get('timestamp')),
161
revision_id = elt.get('revision_id'),
162
inventory_id = elt.get('inventory_id'),
163
inventory_sha1 = elt.get('inventory_sha1')
166
precursor = elt.get('precursor')
167
precursor_sha1 = elt.get('precursor_sha1')
169
pelts = elt.find('parents')
172
# revisions written prior to 0.0.5 have a single precursor
173
# give as an attribute
174
rev_ref = RevisionReference(precursor, precursor_sha1)
175
rev.parents.append(rev_ref)
178
assert p.tag == 'revision_ref', \
179
"bad parent node tag %r" % p.tag
180
rev_ref = RevisionReference(p.get('revision_id'),
181
p.get('revision_sha1'))
182
rev.parents.append(rev_ref)
184
v = elt.get('timezone')
185
rev.timezone = v and int(v)
187
rev.message = elt.findtext('message') # text of <message>