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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:
- about.py
- 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
- oliveicon2.png => icons/oliveicon2.png
- preferences.py => preferences/__init__.py
- logview.py => revisionview.py
- files modified:
- .bzrignore
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.message = revid
29
30
31
class RevisionProxy(object):
32
"""A revision proxy object.
33
34
This will demand load the revision it represents when the committer or
35
message attributes are accessed in order to populate them. It is
36
constructed with the revision id and parent_ids list and a repository
37
object to request the revision from when needed.
38
"""
39
40
def __init__(self, revid, parent_ids, repository):
41
self.revision_id = revid
42
self.parent_ids = parent_ids
43
self._repository = repository
44
self._revision = None
45
46
def _get_attribute_getter(attr):
47
def get_attribute(self):
48
if self._revision is None:
49
self._load()
50
return getattr(self._revision, attr)
51
return get_attribute
52
committer = property(_get_attribute_getter('committer'))
53
message = property(_get_attribute_getter('message'))
54
properties = property(_get_attribute_getter('properties'))
55
timestamp = property(_get_attribute_getter('timestamp'))
56
timezone = property(_get_attribute_getter('timezone'))
57
58
def _load(self):
59
"""Load the revision object."""
60
self._revision = self._repository.get_revision(self.revision_id)
61
62
63
class DistanceMethod(object):
64
65
def __init__(self, branch, start):
66
self.branch = branch
67
self.start = start
68
self.revisions = {}
69
self.children = {}
70
self.children_of_id = {start: set()}
71
self.parent_ids_of = {}
72
self.colours = { start: 0 }
73
self.last_colour = 0
74
self.direct_parent_of = {}
75
self.graph = {}
76
77
def fill_caches(self):
78
graph = self.branch.repository.get_revision_graph_with_ghosts([self.start])
79
for revid in graph.ghosts:
80
self.cache_revision(DummyRevision(revid))
81
for revid, parents in graph.get_ancestors().items():
82
self.cache_revision(RevisionProxy(revid, parents, self.branch.repository))
83
84
def cache_revision(self, revision):
85
"Set the caches for a newly retrieved revision."""
86
revid = revision.revision_id
87
# Build a revision cache
88
self.revisions[revid] = revision
89
# Build a children dictionary
90
for parent_id in revision.parent_ids:
91
self.children_of_id.setdefault(parent_id, set()).add(revision)
92
# Build a parents dictionnary, where redundant parents will be removed,
93
# and that will be passed along tothe rest of program.
94
if len(revision.parent_ids) != len(set(revision.parent_ids)):
95
# fix the parent_ids list.
96
parent_ids = []
97
parent_ids_set = set()
98
for parent_id in revision.parent_ids:
99
if parent_id in parent_ids_set:
100
continue
101
parent_ids.append(parent_id)
102
parent_ids_set.add(parent_id)
103
revision.parent_ids = parent_ids
104
self.parent_ids_of[revision] = list(revision.parent_ids)
105
self.graph[revid] = revision.parent_ids
106
107
def make_children_map(self):
108
revisions = self.revisions
109
return dict((revisions[revid], c)
110
for (revid, c) in self.children_of_id.iteritems())
111
112
def sort_revisions(self, sorted_revids, maxnum):
113
revisions = self.revisions
114
parent_ids_of = self.parent_ids_of
115
children_of_id = self.children_of_id
116
# Try to compact sequences of revisions on the same branch.
117
distances = {}
118
skipped_revids = []
119
expected_id = sorted_revids[0]
120
pending_ids = []
121
while True:
122
revid = sorted_revids.pop(0)
123
if revid != expected_id:
124
skipped_revids.append(revid)
125
continue
126
revision = revisions[revid]
127
for child in children_of_id[revid]:
128
# postpone if any child is missing
129
if child.revision_id not in distances:
130
if expected_id not in pending_ids:
131
pending_ids.append(expected_id)
132
expected_id = pending_ids.pop(0)
133
skipped_revids.append(revid)
134
sorted_revids[:0] = skipped_revids
135
del skipped_revids[:]
136
break
137
else:
138
# all children are here, push!
139
distances[revid] = len(distances)
140
if maxnum is not None and len(distances) > maxnum:
141
# bail out early if a limit was specified
142
sorted_revids[:0] = skipped_revids
143
for revid in sorted_revids:
144
distances[revid] = len(distances)
145
break
146
# all parents will need to be pushed as soon as possible
147
for parent in parent_ids_of[revision]:
148
if parent not in pending_ids:
149
pending_ids.insert(0, parent)
150
if not pending_ids:
151
break
152
expected_id = pending_ids.pop(0)
153
# if the next expected revid has already been skipped, requeue
154
# the skipped ids, except those that would go right back to the
155
# skipped list.
156
if expected_id in skipped_revids:
157
pos = skipped_revids.index(expected_id)
158
sorted_revids[:0] = skipped_revids[pos:]
159
del skipped_revids[pos:]
160
self.distances = distances
161
return sorted(distances, key=distances.get)
162
163
def choose_colour(self, revid):
164
revision = self.revisions[revid]
165
children_of_id = self.children_of_id
166
parent_ids_of = self.parent_ids_of
167
colours = self.colours
168
# choose colour
169
the_children = children_of_id[revid]
170
if len(the_children) == 1:
171
[child] = the_children
172
if len(parent_ids_of[child]) == 1:
173
# one-one relationship between parent and child, same
174
# colour
175
colours[revid] = colours[child.revision_id]
176
else:
177
self.choose_colour_one_child(revision, child)
178
else:
179
self.choose_colour_many_children(revision, the_children)
180
181
def choose_colour_one_child(self, revision, child):
182
revid = revision.revision_id
183
direct_parent_of = self.direct_parent_of
184
revisions = self.revisions
185
# one child with multiple parents, the first parent with
186
# the same committer gets the colour
187
direct_parent = direct_parent_of.get(child)
188
if direct_parent is None:
189
# if it has not been found yet, find it now and remember
190
for parent_id in self.parent_ids_of[child]:
191
parent_revision = revisions[parent_id]
192
if parent_revision.committer == child.committer:
193
# found the first parent with the same committer
194
direct_parent = parent_revision
195
direct_parent_of[child] = direct_parent
196
break
197
if direct_parent == revision:
198
self.colours[revid] = self.colours[child.revision_id]
199
else:
200
self.colours[revid] = self.last_colour = self.last_colour + 1
201
202
def choose_colour_many_children(self, revision, the_children):
203
"""Colour revision revision."""
204
revid = revision.revision_id
205
direct_parent_of = self.direct_parent_of
206
# multiple children, get the colour of the last displayed child
207
# with the same committer which does not already have its colour
208
# taken
209
available = {}
210
for child in the_children:
211
if child.committer != revision.committer:
212
continue
213
direct_parent = direct_parent_of.get(child)
214
if direct_parent == revision:
215
self.colours[revid] = self.colours[child.revision_id]
216
break
217
# FIXME: Colouring based on whats been displayed MUST be done with
218
# knowledge of the revisions being output.
219
# until the refactoring to fold graph() into this more compactly is
220
# done, I've disabled this reuse. RBC 20060403
221
# if direct_parent is None:
222
# available[child] = distances[child.revision_id]
223
# .. it will be something like available[child] = \
224
# revs[child.revision_id][0] - which is the sequence number
225
else:
226
if available:
227
sorted_children = sorted(available, key=available.get)
228
child = sorted_children[-1]
229
direct_parent_of[child] = revision
230
self.colours[revid] = self.colours[child.revision_id]
231
else:
232
# no candidate children is available, pick the next
233
# colour
234
self.colours[revid] = self.last_colour = self.last_colour + 1
235
236
237
def distances(branch, start):
238
"""Sort the revisions.
239
240
Traverses the branch revision tree starting at start and produces an
241
ordered list of revisions such that a revision always comes after
242
any revision it is the parent of.
243
244
Returns a tuple of (revids, revisions, colours, children)
245
"""
246
distance = DistanceMethod(branch, start)
247
distance.fill_caches()
248
distance.merge_sorted = merge_sort(distance.graph, distance.start)
249
children = distance.make_children_map()
250
251
for seq, revid, merge_depth, end_of_merge in distance.merge_sorted:
252
distance.choose_colour(revid)
253
254
revisions = distance.revisions
255
colours = distance.colours
256
parent_ids_of = distance.parent_ids_of
257
return (revisions, colours, children, parent_ids_of, distance.merge_sorted)
258
259
260
def graph(revisions, colours, merge_sorted):
261
"""Produce a directed graph of a bzr branch.
262
263
For each revision it then yields a tuple of (revision, node, lines).
264
If the revision is only referenced in the branch and not present in the
265
store, revision will be a DummyRevision object, otherwise it is the bzr
266
Revision object with the meta-data for the revision.
267
268
Node is a tuple of (column, colour) with column being a zero-indexed
269
column number of the graph that this revision represents and colour
270
being a zero-indexed colour (which doesn't specify any actual colour
271
in particular) to draw the node in.
272
273
Lines is a list of tuples which represent lines you should draw away
274
from the revision, if you also need to draw lines into the revision
275
you should use the lines list from the previous iteration. Each
276
typle in the list is in the form (start, end, colour) with start and
277
end being zero-indexed column numbers and colour as in node.
278
279
It's up to you how to actually draw the nodes and lines (straight,
280
curved, kinked, etc.) and to pick the actual colours for each index.
281
"""
282
if not len(merge_sorted):
283
return
284
# split merge_sorted into a map:
285
revs = {}
286
# FIXME: get a hint on this from the merge_sorted data rather than
287
# calculating it ourselves
288
# mapping from rev_id to the sequence number of the next lowest rev
289
next_lower_rev = {}
290
# mapping from rev_id to next-in-branch-revid - may be None for end
291
# of branch
292
next_branch_revid = {}
293
# the stack we are in in the sorted data for determining which
294
# next_lower_rev to set. It is a stack which has one list at each
295
# depth - the ids at that depth that need the same id allocated.
296
current_stack = [[]]
297
for seq, revid, indent, end_merge in merge_sorted:
298
revs[revid] = (seq, indent, end_merge)
299
if indent == len(current_stack):
300
# new merge group starts
301
current_stack.append([revid])
302
elif indent == len(current_stack) - 1:
303
# part of the current merge group
304
current_stack[-1].append(revid)
305
else:
306
# end of a merge group
307
while current_stack[-1]:
308
stack_rev_id = current_stack[-1].pop()
309
# record the next lower rev for this rev:
310
next_lower_rev[stack_rev_id] = seq
311
# if this followed a non-end-merge rev in this group note that
312
if len(current_stack[-1]):
313
if not revs[current_stack[-1][-1]][2]:
314
next_branch_revid[current_stack[-1][-1]] = stack_rev_id
315
current_stack.pop()
316
# append to the now-current merge group
317
current_stack[-1].append(revid)
318
# assign a value to all the depth 0 revisions
319
while current_stack[-1]:
320
stack_rev_id = current_stack[-1].pop()
321
# record the next lower rev for this rev:
322
next_lower_rev[stack_rev_id] = len(merge_sorted)
323
# if this followed a non-end-merge rev in this group note that
324
if len(current_stack[-1]):
325
if not revs[current_stack[-1][-1]][2]:
326
next_branch_revid[current_stack[-1][-1]] = stack_rev_id
327
328
# a list of the current revisions we are drawing lines TO indicating
329
# the sequence of their lines on the screen.
330
# i.e. [A, B, C] means that the line to A, to B, and to C are in
331
# (respectively), 0, 1, 2 on the screen.
332
hanging = [merge_sorted[0][1]]
333
for seq, revid, indent, end_merge in merge_sorted:
334
# a list of the lines to draw: their position in the
335
# previous row, their position in this row, and the colour
336
# (which is the colour they are routing to).
337
lines = []
338
339
new_hanging = []
340
341
for h_idx, hang in enumerate(hanging):
342
# one of these will be the current lines node:
343
# we are drawing a line. h_idx
344
if hang == revid:
345
# we have found the current lines node
346
node = (h_idx, colours[revid])
347
348
# note that we might have done the main parent
349
drawn_parents = set()
350
351
def draw_line(from_idx, to_idx, revision_id):
352
try:
353
n_idx = new_hanging.index(revision_id)
354
except ValueError:
355
# force this to be vertical at the place this rev was
356
# drawn.
357
new_hanging.insert(to_idx, revision_id)
358
n_idx = to_idx
359
lines.append((from_idx, n_idx, colours[revision_id]))
360
361
362
# we want to draw a line to the next commit on 'this' branch
363
if not end_merge:
364
# drop this line first.
365
parent_id = next_branch_revid[revid]
366
draw_line(h_idx, h_idx, parent_id)
367
# we have drawn this parent
368
drawn_parents.add(parent_id)
369
else:
370
# this is the last revision in a 'merge', show where it came from
371
if len(revisions[revid].parent_ids) > 1:
372
# having > 1
373
# parents means this commit was a merge, and being
374
# the end point of a merge group means that all
375
# the parent revisions were merged into branches
376
# to the left of this before this was committed
377
# - so we want to show this as a new branch from
378
# those revisions.
379
# to do this, we show the parent with the lowest
380
# sequence number, which is the one that this
381
# branch 'spawned from', and no others.
382
# If this sounds like a problem, remember that:
383
# if the parent was not already in our mainline
384
# it would show up as a merge into this making
385
# this not the end of a merge-line.
386
lowest = len(merge_sorted)
387
for parent_id in revisions[revid].parent_ids:
388
if revs[parent_id][0] < lowest:
389
lowest = revs[parent_id][0]
390
assert lowest != len(merge_sorted)
391
draw_line(h_idx, len(new_hanging), merge_sorted[lowest][1])
392
drawn_parents.add(merge_sorted[lowest][1])
393
elif len(revisions[revid].parent_ids) == 1:
394
# only one parent, must show this link to be useful.
395
parent_id = revisions[revid].parent_ids[0]
396
draw_line(h_idx, len(new_hanging), parent_id)
397
drawn_parents.add(parent_id)
398
399
# what do we want to draw lines to from here:
400
# each parent IF its relevant.
401
#
402
# Now we need to hang its parents, we put them at the point
403
# the old column was so anything to the right of this has
404
# to move outwards to make room. We also try and collapse
405
# hangs to keep the graph small.
406
# RBC: we do not draw lines to parents that were already merged
407
# unless its the last revision in a merge group.
408
for parent_id in revisions[revid].parent_ids:
409
if parent_id in drawn_parents:
410
continue
411
parent_seq = revs[parent_id][0]
412
parent_depth = revs[parent_id][1]
413
if parent_depth == indent + 1:
414
# The parent was a merge into this branch determine if
415
# it was already merged into the mainline via a
416
# different merge: if all revisions between us and
417
# parent_seq have a indent greater than there are no
418
# revisions with a lower indent than us.
419
# We do not use 'parent_depth < indent' because that
420
# would allow un-uniqueified merges to show up, and
421
# merge_sorted should take care of that for us (but
422
# does not trim the values)
423
if parent_seq < next_lower_rev[revid]:
424
draw_line(h_idx, len(new_hanging), parent_id)
425
elif parent_depth == indent and parent_seq == seq + 1:
426
# part of this branch
427
draw_line(h_idx, len(new_hanging), parent_id)
428
else:
429
# draw a line from the previous position of this line to the
430
# new position.
431
# h_idx is the old position.
432
# new_indent is the new position.
433
draw_line(h_idx, len(new_hanging), hang)
434
# we've calculated the row, assign new_hanging to hanging to setup for
435
# the next row
436
hanging = new_hanging
437
438
yield (revisions[revid], node, lines)
439
440
441
def same_branch(a, b):
442
"""Return whether we think revisions a and b are on the same branch."""
443
if len(a.parent_ids) == 1:
444
# Defacto same branch if only parent
445
return True
446
elif a.committer == b.committer:
447
# Same committer so may as well be
448
return True
449
else:
450
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