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- Committer: Jelmer Vernooij
- Date: 2008-06-29 15:47:30 UTC
- mto: This revision was merged to the branch mainline in revision 519.
- Revision ID: jelmer@samba.org-20080629154730-xfsotoxwkiytf0ph
Pass graph object rather than full repository to linegraph.
- files added:
- branchview
- preferences
- files removed:
- tests/test_viz.py
- files renamed:
- viz/graphcell.py => branchview/graphcell.py
- viz/graph.py => branchview/linegraph.py
- bzr-icon-64.png => icons/bzr-icon-64.png
- preferences.py => preferences/__init__.py
- logview.py => revisionview.py
- files modified:
- AUTHORS
added
removed
branchview/linegraph.py
1
# -*- coding: UTF-8 -*-
2
"""Directed graph production.
3
4
This module contains the code to produce an ordered directed graph of a
5
bzr branch, such as we display in the tree view at the top of the bzrk
6
window.
7
"""
8
9
__copyright__ = "Copyright © 2005 Canonical Ltd."
10
__author__ = "Scott James Remnant <scott@ubuntu.com>"
11
12
13
from bzrlib.revision import Revision
14
from bzrlib.tsort import merge_sort
15
16
17
class DummyRevision(Revision):
18
"""Dummy bzr revision.
19
20
Sometimes, especially in older bzr branches, a revision is referenced
21
as the parent of another but not actually present in the branch's store.
22
When this happens we use an instance of this class instead of the real
23
Revision object (which we can't get).
24
"""
25
def __init__(self, revid):
26
super(DummyRevision, self).__init__(revid)
27
self.committer = None
28
self.timestamp = None
29
self.timezone = None
30
self.message = revid
31
32
33
class RevisionProxy(object):
34
"""A revision proxy object.
35
36
This will demand load the revision it represents when the committer or
37
message attributes are accessed in order to populate them. It is
38
constructed with the revision id and parent_ids list and a repository
39
object to request the revision from when needed.
40
"""
41
42
def __init__(self, revid, parent_ids, repository):
43
self.revision_id = revid
44
self.parent_ids = parent_ids
45
self._repository = repository
46
self._revision = None
47
48
def _get_attribute_getter(attr):
49
def get_attribute(self):
50
if self._revision is None:
51
self._load()
52
return getattr(self._revision, attr)
53
return get_attribute
54
committer = property(_get_attribute_getter('committer'))
55
message = property(_get_attribute_getter('message'))
56
properties = property(_get_attribute_getter('properties'))
57
timestamp = property(_get_attribute_getter('timestamp'))
58
timezone = property(_get_attribute_getter('timezone'))
59
60
def _load(self):
61
"""Load the revision object."""
62
self._revision = self._repository.get_revision(self.revision_id)
63
64
65
class DistanceMethod(object):
66
67
def __init__(self, repository, start_revid):
68
self.repository = repository
69
self.start_revid = start_revid
70
self.revisions = {}
71
self.children = {}
72
self.children_of_id = {start_revid: set()}
73
self.parent_ids_of = {}
74
self.colours = { start_revid: 0 }
75
self.last_colour = 0
76
self.direct_parent_of = {}
77
self.graph = {}
78
79
def fill_caches(self):
80
graph = self.repository.get_revision_graph_with_ghosts([self.start_revid])
81
for revid in graph.ghosts:
82
self.cache_revision(DummyRevision(revid))
83
for revid, parents in graph.get_ancestors().items():
84
self.cache_revision(RevisionProxy(revid, parents, self.repository))
85
86
def cache_revision(self, revision):
87
"Set the caches for a newly retrieved revision."""
88
revid = revision.revision_id
89
# Build a revision cache
90
self.revisions[revid] = revision
91
# Build a children dictionary
92
for parent_id in revision.parent_ids:
93
self.children_of_id.setdefault(parent_id, set()).add(revision)
94
# Build a parents dictionnary, where redundant parents will be removed,
95
# and that will be passed along tothe rest of program.
96
if len(revision.parent_ids) != len(set(revision.parent_ids)):
97
# fix the parent_ids list.
98
parent_ids = []
99
parent_ids_set = set()
100
for parent_id in revision.parent_ids:
101
if parent_id in parent_ids_set:
102
continue
103
parent_ids.append(parent_id)
104
parent_ids_set.add(parent_id)
105
revision.parent_ids = parent_ids
106
self.parent_ids_of[revision] = list(revision.parent_ids)
107
self.graph[revid] = revision.parent_ids
108
109
def make_children_map(self):
110
revisions = self.revisions
111
return dict((revisions[revid], c)
112
for (revid, c) in self.children_of_id.iteritems())
113
114
def sort_revisions(self, sorted_revids, maxnum):
115
revisions = self.revisions
116
parent_ids_of = self.parent_ids_of
117
children_of_id = self.children_of_id
118
# Try to compact sequences of revisions on the same branch.
119
distances = {}
120
skipped_revids = []
121
expected_id = sorted_revids[0]
122
pending_ids = []
123
while True:
124
revid = sorted_revids.pop(0)
125
if revid != expected_id:
126
skipped_revids.append(revid)
127
continue
128
revision = revisions[revid]
129
for child in children_of_id[revid]:
130
# postpone if any child is missing
131
if child.revision_id not in distances:
132
if expected_id not in pending_ids:
133
pending_ids.append(expected_id)
134
expected_id = pending_ids.pop(0)
135
skipped_revids.append(revid)
136
sorted_revids[:0] = skipped_revids
137
del skipped_revids[:]
138
break
139
else:
140
# all children are here, push!
141
distances[revid] = len(distances)
142
if maxnum is not None and len(distances) > maxnum:
143
# bail out early if a limit was specified
144
sorted_revids[:0] = skipped_revids
145
for revid in sorted_revids:
146
distances[revid] = len(distances)
147
break
148
# all parents will need to be pushed as soon as possible
149
for parent in parent_ids_of[revision]:
150
if parent not in pending_ids:
151
pending_ids.insert(0, parent)
152
if not pending_ids:
153
break
154
expected_id = pending_ids.pop(0)
155
# if the next expected revid has already been skipped, requeue
156
# the skipped ids, except those that would go right back to the
157
# skipped list.
158
if expected_id in skipped_revids:
159
pos = skipped_revids.index(expected_id)
160
sorted_revids[:0] = skipped_revids[pos:]
161
del skipped_revids[pos:]
162
self.distances = distances
163
return sorted(distances, key=distances.get)
164
165
def choose_colour(self, revid):
166
revision = self.revisions[revid]
167
children_of_id = self.children_of_id
168
parent_ids_of = self.parent_ids_of
169
colours = self.colours
170
# choose colour
171
the_children = children_of_id[revid]
172
if len(the_children) == 1:
173
[child] = the_children
174
if len(parent_ids_of[child]) == 1:
175
# one-one relationship between parent and child, same
176
# colour
177
colours[revid] = colours[child.revision_id]
178
else:
179
self.choose_colour_one_child(revision, child)
180
else:
181
self.choose_colour_many_children(revision, the_children)
182
183
def choose_colour_one_child(self, revision, child):
184
revid = revision.revision_id
185
direct_parent_of = self.direct_parent_of
186
revisions = self.revisions
187
# one child with multiple parents, the first parent with
188
# the same committer gets the colour
189
direct_parent = direct_parent_of.get(child)
190
if direct_parent is None:
191
# if it has not been found yet, find it now and remember
192
for parent_id in self.parent_ids_of[child]:
193
parent_revision = revisions[parent_id]
194
if parent_revision.committer == child.committer:
195
# found the first parent with the same committer
196
direct_parent = parent_revision
197
direct_parent_of[child] = direct_parent
198
break
199
if direct_parent == revision:
200
self.colours[revid] = self.colours[child.revision_id]
201
else:
202
self.colours[revid] = self.last_colour = self.last_colour + 1
203
204
def choose_colour_many_children(self, revision, the_children):
205
"""Colour revision revision."""
206
revid = revision.revision_id
207
direct_parent_of = self.direct_parent_of
208
# multiple children, get the colour of the last displayed child
209
# with the same committer which does not already have its colour
210
# taken
211
available = {}
212
for child in the_children:
213
if child.committer != revision.committer:
214
continue
215
direct_parent = direct_parent_of.get(child)
216
if direct_parent == revision:
217
self.colours[revid] = self.colours[child.revision_id]
218
break
219
# FIXME: Colouring based on whats been displayed MUST be done with
220
# knowledge of the revisions being output.
221
# until the refactoring to fold graph() into this more compactly is
222
# done, I've disabled this reuse. RBC 20060403
223
# if direct_parent is None:
224
# available[child] = distances[child.revision_id]
225
# .. it will be something like available[child] = \
226
# revs[child.revision_id][0] - which is the sequence number
227
else:
228
if available:
229
sorted_children = sorted(available, key=available.get)
230
child = sorted_children[-1]
231
direct_parent_of[child] = revision
232
self.colours[revid] = self.colours[child.revision_id]
233
else:
234
# no candidate children is available, pick the next
235
# colour
236
self.colours[revid] = self.last_colour = self.last_colour + 1
237
238
239
def distances(repository, start_revid):
240
"""Sort the revisions.
241
242
Traverses the branch revision tree starting at start and produces an
243
ordered list of revisions such that a revision always comes after
244
any revision it is the parent of.
245
246
Returns a tuple of (revids, revisions, colours, children)
247
"""
248
distance = DistanceMethod(repository, start_revid)
249
distance.fill_caches()
250
distance.merge_sorted = merge_sort(distance.graph, distance.start_revid)
251
children = distance.make_children_map()
252
253
for seq, revid, merge_depth, end_of_merge in distance.merge_sorted:
254
distance.choose_colour(revid)
255
256
revisions = distance.revisions
257
colours = distance.colours
258
parent_ids_of = distance.parent_ids_of
259
return (revisions, colours, children, parent_ids_of, distance.merge_sorted)
260
261
262
def graph(revisions, colours, merge_sorted):
263
"""Produce a directed graph of a bzr branch.
264
265
For each revision it then yields a tuple of (revision, node, lines).
266
If the revision is only referenced in the branch and not present in the
267
store, revision will be a DummyRevision object, otherwise it is the bzr
268
Revision object with the meta-data for the revision.
269
270
Node is a tuple of (column, colour) with column being a zero-indexed
271
column number of the graph that this revision represents and colour
272
being a zero-indexed colour (which doesn't specify any actual colour
273
in particular) to draw the node in.
274
275
Lines is a list of tuples which represent lines you should draw away
276
from the revision, if you also need to draw lines into the revision
277
you should use the lines list from the previous iteration. Each
278
typle in the list is in the form (start, end, colour) with start and
279
end being zero-indexed column numbers and colour as in node.
280
281
It's up to you how to actually draw the nodes and lines (straight,
282
curved, kinked, etc.) and to pick the actual colours for each index.
283
"""
284
if not len(merge_sorted):
285
return
286
# split merge_sorted into a map:
287
revs = {}
288
# FIXME: get a hint on this from the merge_sorted data rather than
289
# calculating it ourselves
290
# mapping from rev_id to the sequence number of the next lowest rev
291
next_lower_rev = {}
292
# mapping from rev_id to next-in-branch-revid - may be None for end
293
# of branch
294
next_branch_revid = {}
295
# the stack we are in in the sorted data for determining which
296
# next_lower_rev to set. It is a stack which has one list at each
297
# depth - the ids at that depth that need the same id allocated.
298
current_stack = [[]]
299
for seq, revid, indent, end_merge in merge_sorted:
300
revs[revid] = (seq, indent, end_merge)
301
if indent == len(current_stack):
302
# new merge group starts
303
current_stack.append([revid])
304
elif indent == len(current_stack) - 1:
305
# part of the current merge group
306
current_stack[-1].append(revid)
307
else:
308
# end of a merge group
309
while current_stack[-1]:
310
stack_rev_id = current_stack[-1].pop()
311
# record the next lower rev for this rev:
312
next_lower_rev[stack_rev_id] = seq
313
# if this followed a non-end-merge rev in this group note that
314
if len(current_stack[-1]):
315
if not revs[current_stack[-1][-1]][2]:
316
next_branch_revid[current_stack[-1][-1]] = stack_rev_id
317
current_stack.pop()
318
# append to the now-current merge group
319
current_stack[-1].append(revid)
320
# assign a value to all the depth 0 revisions
321
while current_stack[-1]:
322
stack_rev_id = current_stack[-1].pop()
323
# record the next lower rev for this rev:
324
next_lower_rev[stack_rev_id] = len(merge_sorted)
325
# if this followed a non-end-merge rev in this group note that
326
if len(current_stack[-1]):
327
if not revs[current_stack[-1][-1]][2]:
328
next_branch_revid[current_stack[-1][-1]] = stack_rev_id
329
330
# a list of the current revisions we are drawing lines TO indicating
331
# the sequence of their lines on the screen.
332
# i.e. [A, B, C] means that the line to A, to B, and to C are in
333
# (respectively), 0, 1, 2 on the screen.
334
hanging = [merge_sorted[0][1]]
335
for seq, revid, indent, end_merge in merge_sorted:
336
# a list of the lines to draw: their position in the
337
# previous row, their position in this row, and the colour
338
# (which is the colour they are routing to).
339
lines = []
340
341
new_hanging = []
342
343
for h_idx, hang in enumerate(hanging):
344
# one of these will be the current lines node:
345
# we are drawing a line. h_idx
346
if hang == revid:
347
# we have found the current lines node
348
node = (h_idx, colours[revid])
349
350
# note that we might have done the main parent
351
drawn_parents = set()
352
353
def draw_line(from_idx, to_idx, revision_id):
354
try:
355
n_idx = new_hanging.index(revision_id)
356
except ValueError:
357
# force this to be vertical at the place this rev was
358
# drawn.
359
new_hanging.insert(to_idx, revision_id)
360
n_idx = to_idx
361
lines.append((from_idx, n_idx, colours[revision_id]))
362
363
364
# we want to draw a line to the next commit on 'this' branch
365
if not end_merge:
366
# drop this line first.
367
parent_id = next_branch_revid[revid]
368
draw_line(h_idx, h_idx, parent_id)
369
# we have drawn this parent
370
drawn_parents.add(parent_id)
371
else:
372
# this is the last revision in a 'merge', show where it came from
373
if len(revisions[revid].parent_ids) > 1:
374
# having > 1
375
# parents means this commit was a merge, and being
376
# the end point of a merge group means that all
377
# the parent revisions were merged into branches
378
# to the left of this before this was committed
379
# - so we want to show this as a new branch from
380
# those revisions.
381
# to do this, we show the parent with the lowest
382
# sequence number, which is the one that this
383
# branch 'spawned from', and no others.
384
# If this sounds like a problem, remember that:
385
# if the parent was not already in our mainline
386
# it would show up as a merge into this making
387
# this not the end of a merge-line.
388
lowest = len(merge_sorted)
389
for parent_id in revisions[revid].parent_ids:
390
if revs[parent_id][0] < lowest:
391
lowest = revs[parent_id][0]
392
assert lowest != len(merge_sorted)
393
draw_line(h_idx, len(new_hanging), merge_sorted[lowest][1])
394
drawn_parents.add(merge_sorted[lowest][1])
395
elif len(revisions[revid].parent_ids) == 1:
396
# only one parent, must show this link to be useful.
397
parent_id = revisions[revid].parent_ids[0]
398
draw_line(h_idx, len(new_hanging), parent_id)
399
drawn_parents.add(parent_id)
400
401
# what do we want to draw lines to from here:
402
# each parent IF its relevant.
403
#
404
# Now we need to hang its parents, we put them at the point
405
# the old column was so anything to the right of this has
406
# to move outwards to make room. We also try and collapse
407
# hangs to keep the graph small.
408
# RBC: we do not draw lines to parents that were already merged
409
# unless its the last revision in a merge group.
410
for parent_id in revisions[revid].parent_ids:
411
if parent_id in drawn_parents:
412
continue
413
parent_seq = revs[parent_id][0]
414
parent_depth = revs[parent_id][1]
415
if parent_depth == indent + 1:
416
# The parent was a merge into this branch determine if
417
# it was already merged into the mainline via a
418
# different merge: if all revisions between us and
419
# parent_seq have a indent greater than there are no
420
# revisions with a lower indent than us.
421
# We do not use 'parent_depth < indent' because that
422
# would allow un-uniqueified merges to show up, and
423
# merge_sorted should take care of that for us (but
424
# does not trim the values)
425
if parent_seq < next_lower_rev[revid]:
426
draw_line(h_idx, len(new_hanging), parent_id)
427
elif parent_depth == indent and parent_seq == seq + 1:
428
# part of this branch
429
draw_line(h_idx, len(new_hanging), parent_id)
430
else:
431
# draw a line from the previous position of this line to the
432
# new position.
433
# h_idx is the old position.
434
# new_indent is the new position.
435
draw_line(h_idx, len(new_hanging), hang)
436
# we've calculated the row, assign new_hanging to hanging to setup for
437
# the next row
438
hanging = new_hanging
439
440
yield (revisions[revid], node, lines)
441
442
443
def same_branch(a, b):
444
"""Return whether we think revisions a and b are on the same branch."""
445
if len(a.parent_ids) == 1:
446
# Defacto same branch if only parent
447
return True
448
elif a.committer == b.committer:
449
# Same committer so may as well be
450
return True
451
else:
452
return False
1
# -*- coding: UTF-8 -*-
2
"""Directed graph production.
3
4
This module contains the code to produce an ordered directed graph of a
5
bzr branch, such as we display in the tree view at the top of the bzrk
6
window.
7
"""
8
9
__copyright__ = "Copyright © 2005 Canonical Ltd."
10
__author__ = "Scott James Remnant <scott@ubuntu.com>"
11
12
from bzrlib.revision import NULL_REVISION
13
from bzrlib.tsort import merge_sort
14
15
def linegraph(graph, start_revs, maxnum, broken_line_length = None,
16
graph_data = True, mainline_only = False):
17
"""Produce a directed graph of a bzr repository.
18
19
Returns a tuple of (line_graph, revid_index, columns_len) where
20
* line_graph is a list of tuples of (revid,
21
node,
22
lines,
23
parents,
24
children,
25
revno_sequence),
26
* revid_index is a dict of each revision with the key being the revid, and
27
the value the row index, and
28
* columns_len is the number of columns need to draw the line graph.
29
30
31
Node is a tuple of (column, colour) with column being a zero-indexed
32
column number of the graph that this revision represents and colour
33
being a zero-indexed colour (which doesn't specify any actual colour
34
in particular) to draw the node in.
35
36
Lines is a list of tuples which represent lines you should draw away
37
from the revision, if you also need to draw lines into the revision
38
you should use the lines list from the previous iteration. Each
39
typle in the list is in the form (start, end, colour) with start and
40
end being zero-indexed column numbers and colour as in node.
41
42
It's up to you how to actually draw the nodes and lines (straight,
43
curved, kinked, etc.) and to pick the actual colours for each index.
44
"""
45
46
graph_parents = {}
47
ghosts = set()
48
graph_children = {}
49
for (revid, parent_revids) in graph.iter_ancestry(start_revs):
50
if parent_revids is None:
51
ghosts.add(revid)
52
continue
53
if parent_revids == (NULL_REVISION,):
54
graph_parents[revid] = ()
55
else:
56
graph_parents[revid] = parent_revids
57
for parent in parent_revids:
58
graph_children.setdefault(parent, []).append(revid)
59
graph_children.setdefault(revid, [])
60
for ghost in ghosts:
61
for ghost_child in graph_children[ghost]:
62
graph_parents[ghost_child] = [p for p in graph_parents[ghost_child]
63
if p not in ghosts]
64
graph_parents["top:"] = start_revs
65
66
if len(graph_parents)>0:
67
merge_sorted_revisions = merge_sort(
68
graph_parents,
69
"top:",
70
generate_revno=True)
71
else:
72
merge_sorted_revisions = ()
73
74
if mainline_only:
75
merge_sorted_revisions = [elem for elem in merge_sorted_revisions \
76
if len(elem[3])==1 ]
77
78
assert merge_sorted_revisions[0][1] == "top:"
79
merge_sorted_revisions = merge_sorted_revisions[1:]
80
81
revid_index = {}
82
revno_index = {}
83
84
# This will hold an item for each "branch". For a revisions, the revsion
85
# number less the least significant digit is the branch_id, and used as the
86
# key for the dict. Hence revision with the same revsion number less the
87
# least significant digit are considered to be in the same branch line.
88
# e.g.: for revisions 290.12.1 and 290.12.2, the branch_id would be 290.12,
89
# and these two revisions will be in the same branch line. Each value is
90
# a list of rev_indexes in the branch.
91
branch_lines = {}
92
93
linegraph = []
94
95
for (rev_index, (sequence_number,
96
revid,
97
merge_depth,
98
revno_sequence,
99
end_of_merge)) in enumerate(merge_sorted_revisions):
100
if maxnum and rev_index >= maxnum:
101
break
102
revid_index[revid] = rev_index
103
104
parents = graph_parents[revid]
105
linegraph.append([revid,
106
None,
107
[],
108
parents,
109
None,
110
revno_sequence])
111
112
if graph_data:
113
revno_index[revno_sequence] = rev_index
114
115
branch_id = revno_sequence[0:-1]
116
117
branch_line = None
118
if branch_id not in branch_lines:
119
branch_line = []
120
branch_lines[branch_id] = branch_line
121
else:
122
branch_line = branch_lines[branch_id]
123
124
branch_line.append(rev_index)
125
126
if graph_data:
127
branch_ids = branch_lines.keys()
128
129
def branch_id_cmp(x, y):
130
"""Compaire branch_id's first by the number of digits, then reversed
131
by their value"""
132
len_x = len(x)
133
len_y = len(y)
134
if len_x == len_y:
135
return -cmp(x, y)
136
return cmp(len_x, len_y)
137
138
branch_ids.sort(branch_id_cmp)
139
# This will hold a tuple of (child_index, parent_index, col_index) for each
140
# line that needs to be drawn. If col_index is not none, then the line is
141
# drawn along that column, else the the line can be drawn directly between
142
# the child and parent because either the child and parent are in the same
143
# branch line, or the child and parent are 1 row apart.
144
lines = []
145
empty_column = [False for i in range(len(graph_parents))]
146
# This will hold a bit map for each cell. If the cell is true, then the
147
# cell allready contains a node or line. This use when deciding what column
148
# to place a branch line or line in, without it overlaping something else.
149
columns = [list(empty_column)]
150
151
152
for branch_id in branch_ids:
153
branch_line = branch_lines[branch_id]
154
155
# Find the col_index for the direct parent branch. This will be the
156
# starting point when looking for a free column.
157
parent_col_index = 0
158
parent_index = None
159
if len(branch_id) > 1:
160
parent_revno = branch_id[0:-1]
161
if parent_revno in revno_index:
162
parent_index = revno_index[parent_revno]
163
parent_node = linegraph[parent_index][1]
164
if parent_node:
165
parent_col_index = parent_node[0]
166
167
168
col_search_order = _branch_line_col_search_order(columns,
169
parent_col_index)
170
color = reduce(lambda x, y: x+y, branch_id, 0)
171
cur_cont_line = []
172
173
line_range = []
174
last_rev_index = None
175
for rev_index in branch_line:
176
if last_rev_index:
177
if broken_line_length and \
178
rev_index - last_rev_index > broken_line_length:
179
line_range.append(last_rev_index+1)
180
line_range.append(rev_index-1)
181
else:
182
line_range.extend(range(last_rev_index+1, rev_index))
183
184
line_range.append(rev_index)
185
last_rev_index = rev_index
186
187
if parent_index:
188
if broken_line_length and \
189
parent_index - last_rev_index > broken_line_length:
190
line_range.append(last_rev_index+1)
191
else:
192
line_range.extend(range(last_rev_index+1, parent_index))
193
194
col_index = _find_free_column(columns,
195
empty_column,
196
col_search_order,
197
line_range)
198
node = (col_index, color)
199
for rev_index in branch_line:
200
linegraph[rev_index][1] = node
201
columns[col_index][rev_index] = True
202
203
for rev_index in branch_line:
204
(sequence_number,
205
revid,
206
merge_depth,
207
revno_sequence,
208
end_of_merge) = merge_sorted_revisions[rev_index]
209
210
linegraph[rev_index][4] = graph_children[revid]
211
col_index = linegraph[rev_index][1][0]
212
213
for parent_revid in graph_parents[revid]:
214
if parent_revid in revid_index:
215
216
parent_index = revid_index[parent_revid]
217
parent_node = linegraph[parent_index][1]
218
if parent_node:
219
parent_col_index = parent_node[0]
220
else:
221
parent_col_index = None
222
col_search_order = \
223
_line_col_search_order(columns,
224
parent_col_index,
225
col_index)
226
227
# If this line is really long, break it.
228
if len(branch_id) > 0 and \
229
broken_line_length and \
230
parent_index - rev_index > broken_line_length:
231
child_line_col_index = \
232
_find_free_column(columns,
233
empty_column,
234
col_search_order,
235
(rev_index + 1,))
236
_mark_column_as_used(columns,
237
child_line_col_index,
238
(rev_index + 1,))
239
240
# Recall _line_col_search_order to reset it back to
241
# the beging.
242
col_search_order = \
243
_line_col_search_order(columns,
244
parent_col_index,
245
col_index)
246
parent_col_line_index = \
247
_find_free_column(columns,
248
empty_column,
249
col_search_order,
250
(parent_index - 1,))
251
_mark_column_as_used(columns,
252
parent_col_line_index,
253
(parent_index - 1,))
254
lines.append((rev_index,
255
parent_index,
256
(child_line_col_index,
257
parent_col_line_index)))
258
else :
259
line_col_index = col_index
260
if parent_index - rev_index >1:
261
line_range = range(rev_index + 1, parent_index)
262
line_col_index = \
263
_find_free_column(columns,
264
empty_column,
265
col_search_order,
266
line_range)
267
_mark_column_as_used(columns,
268
line_col_index,
269
line_range)
270
lines.append((rev_index,
271
parent_index,
272
(line_col_index,)))
273
274
for (child_index, parent_index, line_col_indexes) in lines:
275
(child_col_index, child_color) = linegraph[child_index][1]
276
(parent_col_index, parent_color) = linegraph[parent_index][1]
277
278
if len(line_col_indexes) == 1:
279
if parent_index - child_index == 1:
280
linegraph[child_index][2].append(
281
(child_col_index,
282
parent_col_index,
283
parent_color))
284
else:
285
# line from the child's column to the lines column
286
linegraph[child_index][2].append(
287
(child_col_index,
288
line_col_indexes[0],
289
parent_color))
290
# lines down the line's column
291
for line_part_index in range(child_index+1, parent_index-1):
292
linegraph[line_part_index][2].append(
293
(line_col_indexes[0],
294
line_col_indexes[0],
295
parent_color))
296
# line from the line's column to the parent's column
297
linegraph[parent_index-1][2].append(
298
(line_col_indexes[0],
299
parent_col_index,
300
parent_color))
301
else:
302
# Broken line
303
# line from the child's column to the lines column
304
linegraph[child_index][2].append(
305
(child_col_index,
306
line_col_indexes[0],
307
parent_color))
308
# Broken line end
309
linegraph[child_index+1][2].append(
310
(line_col_indexes[0],
311
None,
312
parent_color))
313
314
# Broken line end
315
linegraph[parent_index-2][2].append(
316
(None,
317
line_col_indexes[1],
318
parent_color))
319
# line from the line's column to the parent's column
320
linegraph[parent_index-1][2].append(
321
(line_col_indexes[1],
322
parent_col_index,
323
parent_color))
324
return (linegraph, revid_index, len(columns))
325
else:
326
return (linegraph, revid_index, 0)
327
328
329
def _branch_line_col_search_order(columns, parent_col_index):
330
for col_index in range(parent_col_index, len(columns)):
331
yield col_index
332
for col_index in range(parent_col_index-1, -1, -1):
333
yield col_index
334
335
def _line_col_search_order(columns, parent_col_index, child_col_index):
336
if parent_col_index is not None:
337
max_index = max(parent_col_index, child_col_index)
338
min_index = min(parent_col_index, child_col_index)
339
for col_index in range(max_index, min_index -1, -1):
340
yield col_index
341
else:
342
max_index = child_col_index
343
min_index = child_col_index
344
yield child_col_index
345
i = 1
346
while max_index + i < len(columns) or \
347
min_index - i > -1:
348
if max_index + i < len(columns):
349
yield max_index + i
350
if min_index - i > -1:
351
yield min_index - i
352
i += 1
353
354
def _find_free_column(columns, empty_column, col_search_order, line_range):
355
for col_index in col_search_order:
356
column = columns[col_index]
357
has_overlaping_line = False
358
for row_index in line_range:
359
if column[row_index]:
360
has_overlaping_line = True
361
break
362
if not has_overlaping_line:
363
break
364
else:
365
col_index = len(columns)
366
column = list(empty_column)
367
columns.append(column)
368
return col_index
369
370
def _mark_column_as_used(columns, col_index, line_range):
371
column = columns[col_index]
372
for row_index in line_range:
373
column[row_index] = True
374
375
def same_branch(a, b):
376
"""Return whether we think revisions a and b are on the same branch."""
377
if len(a.parent_ids) == 1:
378
# Defacto same branch if only parent
379
return True
380
elif a.committer == b.committer:
381
# Same committer so may as well be
382
return True
383
else:
384
return False
Loggerhead is a web-based interface for Breezy
Version: 2.0.2.dev0