14
14
# You should have received a copy of the GNU General Public License
15
15
# along with this program; if not, write to the Free Software
16
16
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17
from dotgraph import Node, dot_output, invoke_dot, invoke_dot_aa, NoDot, NoRsvg
18
from dotgraph import RSVG_OUTPUT_TYPES, DOT_OUTPUT_TYPES, Edge, invoke_dot_html
19
21
from bzrlib.branch import Branch
20
from bzrlib.errors import BzrCommandError, NoCommonRoot, NoSuchRevision
21
from bzrlib.fetch import greedy_fetch
22
from bzrlib.graph import node_distances, select_farthest
23
from bzrlib.revision import combined_graph, revision_graph
24
from bzrlib.revision import MultipleRevisionSources
22
from bzrlib.errors import BzrCommandError, NoSuchRevision
23
from bzrlib.revision import NULL_REVISION
25
from bzrtools import short_committer
26
from dotgraph import (
40
def max_distance(node, ancestors, distances, root_descendants):
41
"""Calculate the max distance to an ancestor.
42
Return None if not all possible ancestors have known distances"""
45
best = distances[node]
46
for ancestor in ancestors[node]:
47
# skip ancestors we will never traverse:
48
if root_descendants is not None and ancestor not in root_descendants:
50
# An ancestor which is not listed in ancestors will never be in
51
# distances, so we pretend it never existed.
52
if ancestor not in ancestors:
54
if ancestor not in distances:
56
if best is None or distances[ancestor]+1 > best:
57
best = distances[ancestor] + 1
61
def node_distances(graph, ancestors, start, root_descendants=None):
62
"""Produce a list of nodes, sorted by distance from a start node.
63
This is an algorithm devised by Aaron Bentley, because applying Dijkstra
64
backwards seemed too complicated.
66
For each node, we walk its descendants. If all the descendant's ancestors
67
have a max-distance-to-start, (excluding ones that can never reach start),
68
we calculate their max-distance-to-start, and schedule their descendants.
70
So when a node's last parent acquires a distance, it will acquire a
71
distance on the next iteration.
73
Once we know the max distances for all nodes, we can return a list sorted
74
by distance, farthest first.
76
distances = {start: 0}
81
line_descendants = graph[line]
82
for descendant in line_descendants:
83
distance = max_distance(descendant, ancestors, distances,
87
distances[descendant] = distance
88
new_lines.add(descendant)
93
def nodes_by_distance(distances):
94
"""Return a list of nodes sorted by distance"""
98
node_list = distances.keys()
99
node_list.sort(key=by_distance, reverse=True)
103
def select_farthest(distances, common):
104
"""Return the farthest common node, or None if no node qualifies."""
105
node_list = nodes_by_distance(distances)
106
for node in node_list:
30
111
mail_map = {'aaron.bentley@utoronto.ca' : 'Aaron Bentley',
31
112
'abentley@panoramicfeedback.com': 'Aaron Bentley',
85
160
if rev_id == 'null:':
86
return None, 'Null Revision', None
161
return None, 'Null Revision', None, None
88
163
rev = source.get_revision(rev_id)
89
164
except NoSuchRevision:
91
166
committer = '-'.join(rev_id.split('-')[:-2]).strip(' ')
92
167
if committer == '':
93
return None, None, None
168
return None, None, None, None
94
169
except ValueError:
95
return None, None, None
170
return None, None, None, None
97
172
committer = short_committer(rev.committer)
98
173
if rev.message is not None:
99
174
message = rev.message.split('\n')[0]
100
175
gmtime = time.gmtime(rev.timestamp + (rev.timezone or 0))
101
176
date = time.strftime('%Y/%m/%d', gmtime)
177
nick = rev.properties.get('branch-nick')
102
178
if '@' in committer:
104
180
committer = mail_map[committer]
108
184
committer = committer_alias[committer]
111
return committer, message, date
187
return committer, message, nick, date
113
189
class Grapher(object):
114
191
def __init__(self, branch, other_branch=None):
115
192
object.__init__(self)
116
193
self.branch = branch
117
194
self.other_branch = other_branch
195
if other_branch is not None:
196
other_repo = other_branch.repository
197
revision_b = self.other_branch.last_revision()
201
self.graph = self.branch.repository.get_graph(other_repo)
118
202
revision_a = self.branch.last_revision()
119
if other_branch is not None:
120
greedy_fetch(branch, other_branch)
121
revision_b = self.other_branch.last_revision()
123
self.root, self.ancestors, self.descendants, self.common = \
124
combined_graph(revision_a, revision_b, self.branch)
125
except bzrlib.errors.NoCommonRoot:
126
raise bzrlib.errors.NoCommonAncestor(revision_a, revision_b)
128
self.root, self.ancestors, self.descendants = \
129
revision_graph(revision_a, branch)
203
self.scan_graph(revision_a, revision_b)
132
204
self.n_history = branch.revision_history()
133
self.distances = node_distances(self.descendants, self.ancestors,
205
self.n_revnos = branch.get_revision_id_to_revno_map()
206
self.distances = node_distances(self.descendants, self.ancestors,
135
208
if other_branch is not None:
136
209
self.base = select_farthest(self.distances, self.common)
137
self.m_history = other_branch.revision_history()
210
self.m_history = other_branch.revision_history()
211
self.m_revnos = other_branch.get_revision_id_to_revno_map()
212
self.new_base = self.graph.find_unique_lca(revision_a,
214
self.lcas = self.graph.find_lca(revision_a, revision_b)
140
219
self.m_history = []
222
def scan_graph(self, revision_a, revision_b):
223
a_ancestors = dict(self.graph.iter_ancestry([revision_a]))
224
self.ancestors = a_ancestors
225
self.root = NULL_REVISION
226
if revision_b is not None:
227
b_ancestors = dict(self.graph.iter_ancestry([revision_b]))
228
self.common = set(a_ancestors.keys())
229
self.common.intersection_update(b_ancestors)
230
self.ancestors.update(b_ancestors)
234
self.descendants = {}
236
for revision, parents in self.ancestors.iteritems():
237
self.descendants.setdefault(revision, [])
240
parents = [NULL_REVISION]
241
for parent in parents:
242
self.descendants.setdefault(parent, []).append(revision)
244
self.ancestors[ghost] = [NULL_REVISION]
247
def _get_revno_str(prefix, revno_map, revision_id):
249
revno = revno_map[revision_id]
252
return '%s%s' % (prefix, '.'.join(str(n) for n in revno))
142
254
def dot_node(self, node, num):
201
327
d_node.node_style.append('dotted')
205
def get_relations(self, collapse=False):
331
def get_relations(self, collapse=False, max_distance=None):
207
333
node_relations = []
210
visible_ancestors = compact_ancestors(self.descendants,
211
self.ancestors, (self.base,))
336
exceptions = self.lcas.union([self.base, self.new_base])
337
visible_ancestors = compact_ancestors(self.descendants,
213
visible_ancestors = self.ancestors
341
visible_ancestors = {}
342
for revision, parents in self.ancestors.iteritems():
343
visible_ancestors[revision] = dict((p, 0) for p in parents)
344
if max_distance is not None:
345
min_distance = max(self.distances.values()) - max_distance
346
visible_ancestors = dict((n, p) for n, p in
347
visible_ancestors.iteritems() if
348
self.distances[n] >= min_distance)
214
349
for node, parents in visible_ancestors.iteritems():
215
350
if node not in dot_nodes:
216
351
dot_nodes[node] = self.dot_node(node, num)
218
if visible_ancestors is self.ancestors:
219
parent_iter = ((f, 0) for f in parents)
221
parent_iter = (f for f in parents.iteritems())
222
for parent, skipped in parent_iter:
353
for parent, skipped in parents.iteritems():
223
354
if parent not in dot_nodes:
224
355
dot_nodes[parent] = self.dot_node(parent, num)
233
364
def write_ancestry_file(branch, filename, collapse=True, antialias=True,
234
merge_branch=None, ranking="forced"):
365
merge_branch=None, ranking="forced", max_distance=None):
235
366
b = Branch.open_containing(branch)[0]
236
367
if merge_branch is not None:
237
368
m = Branch.open_containing(merge_branch)[0]
242
373
if m is not None:
245
376
grapher = Grapher(b, m)
246
relations = grapher.get_relations(collapse)
377
relations = grapher.get_relations(collapse, max_distance)
248
379
if m is not None:
275
406
raise BzrCommandError("Can't find 'dot'. Please ensure Graphviz"\
276
" is installed correctly, or use --noantialias")
407
" is installed correctly.")
277
408
elif ext == 'dot' and not done:
278
409
my_file = file(filename, 'wb')
279
410
for fragment in output:
280
my_file.write(fragment)
411
my_file.write(fragment.encode('utf-8'))
281
412
elif ext == 'html':
283
414
invoke_dot_html(output, filename)
285
416
raise BzrCommandError("Can't find 'dot'. Please ensure Graphviz"\
286
" is installed correctly, or use --noantialias")
417
" is installed correctly.")
288
419
print "Unknown file extension: %s" % ext
added
removed
graph.py
