70
70
def __repr__(self):
71
71
return "<Revision id %s>" % self.revision_id
73
def __eq__(self, other):
74
if not isinstance(other, Revision):
76
return (self.inventory_id == other.inventory_id
77
and self.inventory_sha1 == other.inventory_sha1
78
and self.revision_id == other.revision_id
79
and self.timestamp == other.timestamp
80
and self.message == other.message
81
and self.timezone == other.timezone
82
and self.committer == other.committer)
84
def __ne__(self, other):
85
return not self.__eq__(other)
75
from bzrlib.xml import Element, SubElement
77
root = Element('revision',
78
committer = self.committer,
79
timestamp = '%.9f' % self.timestamp,
80
revision_id = self.revision_id,
81
inventory_id = self.inventory_id,
82
inventory_sha1 = self.inventory_sha1,
85
root.set('timezone', str(self.timezone))
88
msg = SubElement(root, 'message')
89
msg.text = self.message
93
pelts = SubElement(root, 'parents')
94
pelts.tail = pelts.text = '\n'
95
for rr in self.parents:
96
assert isinstance(rr, RevisionReference)
97
p = SubElement(pelts, 'revision_ref')
100
p.set('revision_id', rr.revision_id)
102
p.set('revision_sha1', rr.revision_sha1)
107
def from_element(cls, elt):
108
return unpack_revision(elt)
110
from_element = classmethod(from_element)
114
def unpack_revision(elt):
115
"""Convert XML element into Revision object."""
116
# <changeset> is deprecated...
117
if elt.tag not in ('revision', 'changeset'):
118
raise bzrlib.errors.BzrError("unexpected tag in revision file: %r" % elt)
120
rev = Revision(committer = elt.get('committer'),
121
timestamp = float(elt.get('timestamp')),
122
revision_id = elt.get('revision_id'),
123
inventory_id = elt.get('inventory_id'),
124
inventory_sha1 = elt.get('inventory_sha1')
127
precursor = elt.get('precursor')
128
precursor_sha1 = elt.get('precursor_sha1')
130
pelts = elt.find('parents')
134
assert p.tag == 'revision_ref', \
135
"bad parent node tag %r" % p.tag
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rev_ref = RevisionReference(p.get('revision_id'),
137
p.get('revision_sha1'))
138
rev.parents.append(rev_ref)
142
prec_parent = rev.parents[0].revision_id
143
assert prec_parent == precursor
145
# revisions written prior to 0.0.5 have a single precursor
146
# give as an attribute
147
rev_ref = RevisionReference(precursor, precursor_sha1)
148
rev.parents.append(rev_ref)
150
v = elt.get('timezone')
151
rev.timezone = v and int(v)
153
rev.message = elt.findtext('message') # text of <message>
89
158
REVISION_ID_RE = None
149
219
found_ancestors[anc_id] = (anc_order, anc_distance)
150
220
return found_ancestors
153
def __get_closest(intersection):
156
for entry in intersection:
157
if entry[0] == intersection[0][0]:
158
matches.append(entry[2])
222
class AmbiguousBase(bzrlib.errors.BzrError):
223
def __init__(self, bases):
224
msg = "The correct base is unclear, becase %s are all equally close" %\
226
bzrlib.errors.BzrError.__init__(self, msg)
162
229
def common_ancestor(revision_a, revision_b, revision_source):
163
230
"""Find the ancestor common to both revisions that is closest to both.
174
241
b_intersection.append((b_ancestors[revision][1], a_order, revision))
175
242
mutter("a intersection: %r" % a_intersection)
176
243
mutter("b intersection: %r" % b_intersection)
244
def get_closest(intersection):
247
for entry in intersection:
248
if entry[0] == intersection[0][0]:
249
matches.append(entry[2])
178
a_closest = __get_closest(a_intersection)
252
a_closest = get_closest(a_intersection)
179
253
if len(a_closest) == 0:
181
b_closest = __get_closest(b_intersection)
255
b_closest = get_closest(b_intersection)
182
256
assert len(b_closest) != 0
183
257
mutter ("a_closest %r" % a_closest)
184
258
mutter ("b_closest %r" % b_closest)
204
277
except bzrlib.errors.NoSuchRevision, e:
208
def get_intervening_revisions(ancestor_id, rev_id, rev_source,
209
revision_history=None):
210
"""Find the longest line of descent from maybe_ancestor to revision.
211
Revision history is followed where possible.
213
If ancestor_id == rev_id, list will be empty.
214
Otherwise, rev_id will be the last entry. ancestor_id will never appear.
215
If ancestor_id is not an ancestor, NotAncestor will be thrown
217
[rev_source.get_revision(r) for r in (ancestor_id, rev_id)]
218
if ancestor_id == rev_id:
220
def historical_lines(line):
221
"""Return a tuple of historical/non_historical lines, for sorting.
222
The non_historical count is negative, since non_historical lines are
227
for revision in line:
228
if revision in revision_history:
232
return good_count, bad_count
234
successful_lines = []
235
while len(active) > 0:
238
parent_ids = [p.revision_id for p in
239
rev_source.get_revision(line[-1]).parents]
240
for parent in parent_ids:
242
if parent == ancestor_id:
243
successful_lines.append(line_copy)
245
line_copy.append(parent)
246
new_active.append(line_copy)
248
if len(successful_lines) == 0:
249
raise bzrlib.errors.NotAncestor(rev_id, ancestor_id)
250
for line in successful_lines:
252
if revision_history is not None:
253
by_historical_lines = []
254
for line in successful_lines:
255
count = historical_lines(line)
256
by_historical_lines.append((count, line))
257
by_historical_lines.sort()
258
if by_historical_lines[-1][0][0] > 0:
259
return by_historical_lines[-1][1]
260
assert len(successful_lines)
261
successful_lines.sort(cmp, len)
262
return successful_lines[-1]
added
removed
bzrlib/revision.py
