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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:
- .bzrignore
- annotate
- branchview
- icons
- olive
- po
- preferences
- tests
- files removed:
- .bzrignore
- files renamed:
- viz/graphcell.py => branchview/graphcell.py
- viz/graph.py => branchview/linegraph.py
- viz/diffwin.py => diff.py
- files modified:
- AUTHORS
added
removed
branchview/linegraph.py
1
#!/usr/bin/python
2
# -*- coding: UTF-8 -*-
3
"""Directed graph production.
4
5
This module contains the code to produce an ordered directed graph of a
6
bzr branch, such as we display in the tree view at the top of the bzrk
7
window.
8
"""
9
10
__copyright__ = "Copyright © 2005 Canonical Ltd."
11
__author__ = "Scott James Remnant <scott@ubuntu.com>"
12
13
14
from bzrlib.tsort import merge_sort
15
16
17
class DummyRevision(object):
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
26
def __init__(self, revid):
27
self.revision_id = revid
28
self.parent_ids = []
29
self.committer = None
30
self.message = self.revision_id
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, branch, start):
68
self.branch = branch
69
self.start = start
70
self.revisions = {}
71
self.children = {}
72
self.children_of_id = {start: set()}
73
self.parent_ids_of = {}
74
self.colours = { start: 0 }
75
self.last_colour = 0
76
self.direct_parent_of = {}
77
self.graph = {}
78
79
def fill_caches(self):
80
# FIXME: look at using repository.get_revision_graph_with_ghosts - RBC.
81
graph = self.branch.repository.get_revision_graph_with_ghosts([self.start])
82
for revid in graph.ghosts:
83
self.cache_revision(DummyRevision(revid))
84
for revid, parents in graph.get_ancestors().items():
85
self.cache_revision(RevisionProxy(revid, parents, self.branch.repository))
86
87
def cache_revision(self, revision):
88
"Set the caches for a newly retrieved revision."""
89
revid = revision.revision_id
90
# Build a revision cache
91
self.revisions[revid] = revision
92
# Build a children dictionary
93
for parent_id in revision.parent_ids:
94
self.children_of_id.setdefault(parent_id, set()).add(revision)
95
# Build a parents dictionnary, where redundant parents will be removed,
96
# and that will be passed along tothe rest of program.
97
if len(revision.parent_ids) != len(set(revision.parent_ids)):
98
# fix the parent_ids list.
99
parent_ids = []
100
parent_ids_set = set()
101
for parent_id in revision.parent_ids:
102
if parent_id in parent_ids_set:
103
continue
104
parent_ids.append(parent_id)
105
parent_ids_set.add(parent_id)
106
revision.parent_ids = parent_ids
107
self.parent_ids_of[revision] = list(revision.parent_ids)
108
self.graph[revid] = revision.parent_ids
109
110
def make_children_map(self):
111
revisions = self.revisions
112
return dict((revisions[revid], c)
113
for (revid, c) in self.children_of_id.iteritems())
114
115
def sort_revisions(self, sorted_revids, maxnum):
116
revisions = self.revisions
117
parent_ids_of = self.parent_ids_of
118
children_of_id = self.children_of_id
119
# Try to compact sequences of revisions on the same branch.
120
distances = {}
121
skipped_revids = []
122
expected_id = sorted_revids[0]
123
pending_ids = []
124
while True:
125
revid = sorted_revids.pop(0)
126
if revid != expected_id:
127
skipped_revids.append(revid)
128
continue
129
revision = revisions[revid]
130
for child in children_of_id[revid]:
131
# postpone if any child is missing
132
if child.revision_id not in distances:
133
if expected_id not in pending_ids:
134
pending_ids.append(expected_id)
135
expected_id = pending_ids.pop(0)
136
skipped_revids.append(revid)
137
sorted_revids[:0] = skipped_revids
138
del skipped_revids[:]
139
break
140
else:
141
# all children are here, push!
142
distances[revid] = len(distances)
143
if maxnum is not None and len(distances) > maxnum:
144
# bail out early if a limit was specified
145
sorted_revids[:0] = skipped_revids
146
for revid in sorted_revids:
147
distances[revid] = len(distances)
148
break
149
# all parents will need to be pushed as soon as possible
150
for parent in parent_ids_of[revision]:
151
if parent not in pending_ids:
152
pending_ids.insert(0, parent)
153
if not pending_ids:
154
break
155
expected_id = pending_ids.pop(0)
156
# if the next expected revid has already been skipped, requeue
157
# the skipped ids, except those that would go right back to the
158
# skipped list.
159
if expected_id in skipped_revids:
160
pos = skipped_revids.index(expected_id)
161
sorted_revids[:0] = skipped_revids[pos:]
162
del skipped_revids[pos:]
163
self.distances = distances
164
return sorted(distances, key=distances.get)
165
166
def choose_colour(self, revid):
167
revision = self.revisions[revid]
168
children_of_id = self.children_of_id
169
parent_ids_of = self.parent_ids_of
170
colours = self.colours
171
# choose colour
172
the_children = children_of_id[revid]
173
if len(the_children) == 1:
174
[child] = the_children
175
if len(parent_ids_of[child]) == 1:
176
# one-one relationship between parent and child, same
177
# colour
178
colours[revid] = colours[child.revision_id]
179
else:
180
self.choose_colour_one_child(revision, child)
181
else:
182
self.choose_colour_many_children(revision, the_children)
183
184
def choose_colour_one_child(self, revision, child):
185
revid = revision.revision_id
186
direct_parent_of = self.direct_parent_of
187
revisions = self.revisions
188
# one child with multiple parents, the first parent with
189
# the same committer gets the colour
190
direct_parent = direct_parent_of.get(child)
191
if direct_parent is None:
192
# if it has not been found yet, find it now and remember
193
for parent_id in self.parent_ids_of[child]:
194
parent_revision = revisions[parent_id]
195
if parent_revision.committer == child.committer:
196
# found the first parent with the same committer
197
direct_parent = parent_revision
198
direct_parent_of[child] = direct_parent
199
break
200
if direct_parent == revision:
201
self.colours[revid] = self.colours[child.revision_id]
202
else:
203
self.colours[revid] = self.last_colour = self.last_colour + 1
204
205
def choose_colour_many_children(self, revision, the_children):
206
"""Colour revision revision."""
207
revid = revision.revision_id
208
direct_parent_of = self.direct_parent_of
209
# multiple children, get the colour of the last displayed child
210
# with the same committer which does not already have its colour
211
# taken
212
available = {}
213
for child in the_children:
214
if child.committer != revision.committer:
215
continue
216
direct_parent = direct_parent_of.get(child)
217
if direct_parent == revision:
218
self.colours[revid] = self.colours[child.revision_id]
219
break
220
# FIXME: Colouring based on whats been displayed MUST be done with
221
# knowledge of the revisions being output.
222
# until the refactoring to fold graph() into this more compactly is
223
# done, I've disabled this reuse. RBC 20060403
224
# if direct_parent is None:
225
# available[child] = distances[child.revision_id]
226
# .. it will be something like available[child] = \
227
# revs[child.revision_id][0] - which is the sequence number
228
else:
229
if available:
230
sorted_children = sorted(available, key=available.get)
231
child = sorted_children[-1]
232
direct_parent_of[child] = revision
233
self.colours[revid] = self.colours[child.revision_id]
234
else:
235
# no candidate children is available, pick the next
236
# colour
237
self.colours[revid] = self.last_colour = self.last_colour + 1
238
239
240
def distances(branch, start):
241
"""Sort the revisions.
242
243
Traverses the branch revision tree starting at start and produces an
244
ordered list of revisions such that a revision always comes after
245
any revision it is the parent of.
246
247
Returns a tuple of (revids, revisions, colours, children)
248
"""
249
distance = DistanceMethod(branch, start)
250
distance.fill_caches()
251
distance.merge_sorted = merge_sort(distance.graph, distance.start)
252
children = distance.make_children_map()
253
254
for seq, revid, merge_depth, end_of_merge in distance.merge_sorted:
255
distance.choose_colour(revid)
256
257
revisions = distance.revisions
258
colours = distance.colours
259
parent_ids_of = distance.parent_ids_of
260
return (revisions, colours, children, parent_ids_of, distance.merge_sorted)
261
262
263
def graph(revisions, colours, merge_sorted):
264
"""Produce a directed graph of a bzr branch.
265
266
For each revision it then yields a tuple of (revision, node, lines).
267
If the revision is only referenced in the branch and not present in the
268
store, revision will be a DummyRevision object, otherwise it is the bzr
269
Revision object with the meta-data for the revision.
270
271
Node is a tuple of (column, colour) with column being a zero-indexed
272
column number of the graph that this revision represents and colour
273
being a zero-indexed colour (which doesn't specify any actual colour
274
in particular) to draw the node in.
275
276
Lines is a list of tuples which represent lines you should draw away
277
from the revision, if you also need to draw lines into the revision
278
you should use the lines list from the previous iteration. Each
279
typle in the list is in the form (start, end, colour) with start and
280
end being zero-indexed column numbers and colour as in node.
281
282
It's up to you how to actually draw the nodes and lines (straight,
283
curved, kinked, etc.) and to pick the actual colours for each index.
284
"""
285
if not len(merge_sorted):
286
return
287
# split merge_sorted into a map:
288
revs = {}
289
# FIXME: get a hint on this from the merge_sorted data rather than
290
# calculating it ourselves
291
# mapping from rev_id to the sequence number of the next lowest rev
292
next_lower_rev = {}
293
# mapping from rev_id to next-in-branch-revid - may be None for end
294
# of branch
295
next_branch_revid = {}
296
# the stack we are in in the sorted data for determining which
297
# next_lower_rev to set. It is a stack which has one list at each
298
# depth - the ids at that depth that need the same id allocated.
299
current_stack = [[]]
300
for seq, revid, indent, end_merge in merge_sorted:
301
revs[revid] = (seq, indent, end_merge)
302
if indent == len(current_stack):
303
# new merge group starts
304
current_stack.append([revid])
305
elif indent == len(current_stack) - 1:
306
# part of the current merge group
307
current_stack[-1].append(revid)
308
else:
309
# end of a merge group
310
while current_stack[-1]:
311
stack_rev_id = current_stack[-1].pop()
312
# record the next lower rev for this rev:
313
next_lower_rev[stack_rev_id] = seq
314
# if this followed a non-end-merge rev in this group note that
315
if len(current_stack[-1]):
316
if not revs[current_stack[-1][-1]][2]:
317
next_branch_revid[current_stack[-1][-1]] = stack_rev_id
318
current_stack.pop()
319
# append to the now-current merge group
320
current_stack[-1].append(revid)
321
# assign a value to all the depth 0 revisions
322
while current_stack[-1]:
323
stack_rev_id = current_stack[-1].pop()
324
# record the next lower rev for this rev:
325
next_lower_rev[stack_rev_id] = len(merge_sorted)
326
# if this followed a non-end-merge rev in this group note that
327
if len(current_stack[-1]):
328
if not revs[current_stack[-1][-1]][2]:
329
next_branch_revid[current_stack[-1][-1]] = stack_rev_id
330
331
# a list of the current revisions we are drawing lines TO indicating
332
# the sequence of their lines on the screen.
333
# i.e. [A, B, C] means that the line to A, to B, and to C are in
334
# (respectively), 0, 1, 2 on the screen.
335
hanging = [merge_sorted[0][1]]
336
for seq, revid, indent, end_merge in merge_sorted:
337
# a list of the lines to draw: their position in the
338
# previous row, their position in this row, and the colour
339
# (which is the colour they are routing to).
340
lines = []
341
342
new_hanging = []
343
344
for h_idx, hang in enumerate(hanging):
345
# one of these will be the current lines node:
346
# we are drawing a line. h_idx
347
if hang == revid:
348
# we have found the current lines node
349
node = (h_idx, colours[revid])
350
351
# note that we might have done the main parent
352
drawn_parents = set()
353
354
def draw_line(from_idx, to_idx, revision_id):
355
try:
356
n_idx = new_hanging.index(revision_id)
357
except ValueError:
358
# force this to be vertical at the place this rev was
359
# drawn.
360
new_hanging.insert(to_idx, revision_id)
361
n_idx = to_idx
362
lines.append((from_idx, n_idx, colours[revision_id]))
363
364
365
# we want to draw a line to the next commit on 'this' branch
366
if not end_merge:
367
# drop this line first.
368
parent_id = next_branch_revid[revid]
369
draw_line(h_idx, h_idx, parent_id)
370
# we have drawn this parent
371
drawn_parents.add(parent_id)
372
else:
373
# this is the last revision in a 'merge', show where it came from
374
if len(revisions[revid].parent_ids) > 1:
375
# having > 1
376
# parents means this commit was a merge, and being
377
# the end point of a merge group means that all
378
# the parent revisions were merged into branches
379
# to the left of this before this was committed
380
# - so we want to show this as a new branch from
381
# those revisions.
382
# to do this, we show the parent with the lowest
383
# sequence number, which is the one that this
384
# branch 'spawned from', and no others.
385
# If this sounds like a problem, remember that:
386
# if the parent was not already in our mainline
387
# it would show up as a merge into this making
388
# this not the end of a merge-line.
389
lowest = len(merge_sorted)
390
for parent_id in revisions[revid].parent_ids:
391
if revs[parent_id][0] < lowest:
392
lowest = revs[parent_id][0]
393
assert lowest != len(merge_sorted)
394
draw_line(h_idx, len(new_hanging), merge_sorted[lowest][1])
395
drawn_parents.add(merge_sorted[lowest][1])
396
elif len(revisions[revid].parent_ids) == 1:
397
# only one parent, must show this link to be useful.
398
parent_id = revisions[revid].parent_ids[0]
399
draw_line(h_idx, len(new_hanging), parent_id)
400
drawn_parents.add(parent_id)
401
402
# what do we want to draw lines to from here:
403
# each parent IF its relevant.
404
#
405
# Now we need to hang its parents, we put them at the point
406
# the old column was so anything to the right of this has
407
# to move outwards to make room. We also try and collapse
408
# hangs to keep the graph small.
409
# RBC: we do not draw lines to parents that were already merged
410
# unless its the last revision in a merge group.
411
for parent_id in revisions[revid].parent_ids:
412
if parent_id in drawn_parents:
413
continue
414
parent_seq = revs[parent_id][0]
415
parent_depth = revs[parent_id][1]
416
if parent_depth == indent + 1:
417
# The parent was a merge into this branch determine if
418
# it was already merged into the mainline via a
419
# different merge: if all revisions between us and
420
# parent_seq have a indent greater than there are no
421
# revisions with a lower indent than us.
422
# We do not use 'parent_depth < indent' because that
423
# would allow un-uniqueified merges to show up, and
424
# merge_sorted should take care of that for us (but
425
# does not trim the values)
426
if parent_seq < next_lower_rev[revid]:
427
draw_line(h_idx, len(new_hanging), parent_id)
428
elif parent_depth == indent and parent_seq == seq + 1:
429
# part of this branch
430
draw_line(h_idx, len(new_hanging), parent_id)
431
else:
432
# draw a line from the previous position of this line to the
433
# new position.
434
# h_idx is the old position.
435
# new_indent is the new position.
436
draw_line(h_idx, len(new_hanging), hang)
437
# we've calculated the row, assign new_hanging to hanging to setup for
438
# the next row
439
hanging = new_hanging
440
441
yield (revisions[revid], node, lines)
442
443
444
def same_branch(a, b):
445
"""Return whether we think revisions a and b are on the same branch."""
446
if len(a.parent_ids) == 1:
447
# Defacto same branch if only parent
448
return True
449
elif a.committer == b.committer:
450
# Same committer so may as well be
451
return True
452
else:
453
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