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- Committer: Jelmer Vernooij
- Date: 2008-03-14 02:13:27 UTC
- mto: (452.2.2 trunk)
- mto: This revision was merged to the branch mainline in revision 453.
- Revision ID: jelmer@samba.org-20080314021327-q1pabtpneeasz8qv
Fix support for default value in BranchSelectionDialog.
- files added:
- .bzrignore
- annotate
- branchview
- icons
- olive
- po
- tests
- viz
- files removed:
- .bzrignore
- files renamed:
- graphcell.py => branchview/graphcell.py
- graph.py => branchview/linegraph.py
- __init__.py => viz/__init__.py
- branchwin.py => viz/branchwin.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.errors import NoSuchRevision
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
def distances(branch, start):
34
"""Sort the revisions.
35
36
Traverses the branch revision tree starting at start and produces an
37
ordered list of revisions such that a revision always comes after
38
any revision it is the parent of.
39
40
Returns a tuple of (revids, revisions, colours, children)
41
"""
42
revisions = { start: branch.get_revision(start) }
43
children = { revisions[start]: set() }
44
distances = { start: 0 }
45
colours = { start: 0 }
46
last_colour = 0
47
48
# Sort the revisions; the fastest way to do this is to visit each node
49
# as few times as possible (by keeping the todo list in a set) and record
50
# the largest distance to it before queuing up the children if we
51
# increased the distance. This produces the sort order we desire
52
todo = set([ start ])
53
while todo:
54
revid = todo.pop()
55
revision = revisions[revid]
56
distance = distances[revid] + 1
57
colour = colours[revid]
58
59
for parent_id in revision.parent_ids:
60
# Check whether there's any point re-processing this
61
if parent_id in distances and distances[parent_id] >= distance:
62
continue
63
64
# Get the parent from the cache, or put it in the cache
65
try:
66
parent = revisions[parent_id]
67
children[parent].add(revision)
68
except KeyError:
69
try:
70
parent = revisions[parent_id] \
71
= branch.get_revision(parent_id)
72
except NoSuchRevision:
73
parent = revisions[parent_id] = DummyRevision(parent_id)
74
75
children[parent] = set([ revision ])
76
77
# Penalise revisions a little at a fork if we think they're on
78
# the same branch -- this makes the few few (at least) revisions
79
# of a branch appear straight after the fork
80
if same_branch(revision, parent):
81
colours[parent_id] = colour
82
if len(revision.parent_ids) > 1:
83
distances[parent_id] = distance + 10
84
else:
85
distances[parent_id] = distance
86
else:
87
colours[parent_id] = last_colour = last_colour + 1
88
distances[parent_id] = distance
89
90
todo.add(parent_id)
91
92
return ( sorted(distances, key=distances.get), revisions, colours,
93
children )
94
95
def graph(revids, revisions, colours):
96
"""Produce a directed graph of a bzr branch.
97
98
For each revision it then yields a tuple of (revision, node, lines).
99
If the revision is only referenced in the branch and not present in the
100
store, revision will be a DummyRevision object, otherwise it is the bzr
101
Revision object with the meta-data for the revision.
102
103
Node is a tuple of (column, colour) with column being a zero-indexed
104
column number of the graph that this revision represents and colour
105
being a zero-indexed colour (which doesn't specify any actual colour
106
in particular) to draw the node in.
107
108
Lines is a list of tuples which represent lines you should draw away
109
from the revision, if you also need to draw lines into the revision
110
you should use the lines list from the previous iteration. Each
111
typle in the list is in the form (start, end, colour) with start and
112
end being zero-indexed column numbers and colour as in node.
113
114
It's up to you how to actually draw the nodes and lines (straight,
115
curved, kinked, etc.) and to pick the actual colours for each index.
116
"""
117
hanging = revids[:1]
118
for revid in revids:
119
lines = []
120
node = None
121
122
new_hanging = []
123
for h_idx, hang in enumerate(hanging):
124
if hang == revid:
125
# We've matched a hanging revision, so need to output a node
126
# at this point
127
node = (h_idx, colours[revid])
128
129
# Now we need to hang its parents, we put them at the point
130
# the old column was so anything to the right of this has
131
# to move outwards to make room. We also try and collapse
132
# hangs to keep the graph small.
133
for parent_id in revisions[revid].parent_ids:
134
try:
135
n_idx = new_hanging.index(parent_id)
136
except ValueError:
137
n_idx = len(new_hanging)
138
new_hanging.append(parent_id)
139
lines.append((h_idx, n_idx, colours[parent_id]))
140
else:
141
# Revision keeps on hanging, adjust for any change in the
142
# graph shape and try to collapse hangs to keep the graph
143
# small.
144
try:
145
n_idx = new_hanging.index(hang)
146
except ValueError:
147
n_idx = len(new_hanging)
148
new_hanging.append(hang)
149
lines.append((h_idx, n_idx, colours[hang]))
150
hanging = new_hanging
151
152
yield (revisions[revid], node, lines)
153
154
def same_branch(a, b):
155
"""Return whether we think revisions a and b are on the same branch."""
156
if len(a.parent_ids) == 1:
157
# Defacto same branch if only parent
158
return True
159
elif a.committer == b.committer:
160
# Same committer so may as well be
161
return True
162
else:
163
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.tsort import merge_sort
13
14
def linegraph(repository, start, maxnum, broken_line_length = None,
15
graph_data = True, mainline_only = False):
16
"""Produce a directed graph of a bzr repository.
17
18
Returns a tuple of (line_graph, revid_index, columns_len) where
19
* line_graph is a list of tuples of (revid,
20
node,
21
lines,
22
parents,
23
children,
24
revno_sequence),
25
* revid_index is a dict of each revision with the key being the revid, and
26
the value the row index, and
27
* columns_len is the number of columns need to draw the line graph.
28
29
30
Node is a tuple of (column, colour) with column being a zero-indexed
31
column number of the graph that this revision represents and colour
32
being a zero-indexed colour (which doesn't specify any actual colour
33
in particular) to draw the node in.
34
35
Lines is a list of tuples which represent lines you should draw away
36
from the revision, if you also need to draw lines into the revision
37
you should use the lines list from the previous iteration. Each
38
typle in the list is in the form (start, end, colour) with start and
39
end being zero-indexed column numbers and colour as in node.
40
41
It's up to you how to actually draw the nodes and lines (straight,
42
curved, kinked, etc.) and to pick the actual colours for each index.
43
"""
44
45
graph_parents = repository.get_revision_graph(start)
46
graph_children = {}
47
for revid in graph_parents.iterkeys():
48
graph_children[revid] = []
49
50
if len(graph_parents)>0:
51
merge_sorted_revisions = merge_sort(
52
graph_parents,
53
start,
54
generate_revno=True)
55
else:
56
merge_sorted_revisions = ()
57
58
if mainline_only:
59
merge_sorted_revisions = [elem for elem in merge_sorted_revisions \
60
if len(elem[3])==1 ]
61
62
revid_index = {}
63
revno_index = {}
64
65
# This will hold an item for each "branch". For a revisions, the revsion
66
# number less the least significant digit is the branch_id, and used as the
67
# key for the dict. Hence revision with the same revsion number less the
68
# least significant digit are considered to be in the same branch line.
69
# e.g.: for revisions 290.12.1 and 290.12.2, the branch_id would be 290.12,
70
# and these two revisions will be in the same branch line. Each value is
71
# a list of rev_indexes in the branch.
72
branch_lines = {}
73
74
linegraph = []
75
76
for (rev_index, (sequence_number,
77
revid,
78
merge_depth,
79
revno_sequence,
80
end_of_merge)) in enumerate(merge_sorted_revisions):
81
if maxnum and rev_index >= maxnum:
82
break
83
revid_index[revid] = rev_index
84
85
parents = graph_parents[revid]
86
for parent_revid in parents:
87
graph_children[parent_revid].append(revid)
88
89
linegraph.append([revid,
90
None,
91
[],
92
parents,
93
None,
94
revno_sequence])
95
96
if graph_data:
97
revno_index[revno_sequence] = rev_index
98
99
branch_id = revno_sequence[0:-1]
100
101
branch_line = None
102
if branch_id not in branch_lines:
103
branch_line = []
104
branch_lines[branch_id] = branch_line
105
else:
106
branch_line = branch_lines[branch_id]
107
108
branch_line.append(rev_index)
109
110
if graph_data:
111
branch_ids = branch_lines.keys()
112
113
def branch_id_cmp(x, y):
114
"""Compaire branch_id's first by the number of digits, then reversed
115
by their value"""
116
len_x = len(x)
117
len_y = len(y)
118
if len_x == len_y:
119
return -cmp(x, y)
120
return cmp(len_x, len_y)
121
122
branch_ids.sort(branch_id_cmp)
123
# This will hold a tuple of (child_index, parent_index, col_index) for each
124
# line that needs to be drawn. If col_index is not none, then the line is
125
# drawn along that column, else the the line can be drawn directly between
126
# the child and parent because either the child and parent are in the same
127
# branch line, or the child and parent are 1 row apart.
128
lines = []
129
empty_column = [False for i in range(len(graph_parents))]
130
# This will hold a bit map for each cell. If the cell is true, then the
131
# cell allready contains a node or line. This use when deciding what column
132
# to place a branch line or line in, without it overlaping something else.
133
columns = [list(empty_column)]
134
135
136
for branch_id in branch_ids:
137
branch_line = branch_lines[branch_id]
138
139
# Find the col_index for the direct parent branch. This will be the
140
# starting point when looking for a free column.
141
parent_col_index = 0
142
parent_index = None
143
if len(branch_id) > 1:
144
parent_revno = branch_id[0:-1]
145
if parent_revno in revno_index:
146
parent_index = revno_index[parent_revno]
147
parent_node = linegraph[parent_index][1]
148
if parent_node:
149
parent_col_index = parent_node[0]
150
151
152
col_search_order = _branch_line_col_search_order(columns,
153
parent_col_index)
154
color = reduce(lambda x, y: x+y, branch_id, 0)
155
cur_cont_line = []
156
157
line_range = []
158
last_rev_index = None
159
for rev_index in branch_line:
160
if last_rev_index:
161
if broken_line_length and \
162
rev_index - last_rev_index > broken_line_length:
163
line_range.append(last_rev_index+1)
164
line_range.append(rev_index-1)
165
else:
166
line_range.extend(range(last_rev_index+1, rev_index))
167
168
line_range.append(rev_index)
169
last_rev_index = rev_index
170
171
if parent_index:
172
if broken_line_length and \
173
parent_index - last_rev_index > broken_line_length:
174
line_range.append(last_rev_index+1)
175
else:
176
line_range.extend(range(last_rev_index+1, parent_index))
177
178
col_index = _find_free_column(columns,
179
empty_column,
180
col_search_order,
181
line_range)
182
node = (col_index, color)
183
for rev_index in branch_line:
184
linegraph[rev_index][1] = node
185
columns[col_index][rev_index] = True
186
187
for rev_index in branch_line:
188
(sequence_number,
189
revid,
190
merge_depth,
191
revno_sequence,
192
end_of_merge) = merge_sorted_revisions[rev_index]
193
194
linegraph[rev_index][4] = graph_children[revid]
195
col_index = linegraph[rev_index][1][0]
196
197
for parent_revid in graph_parents[revid]:
198
if parent_revid in revid_index:
199
200
parent_index = revid_index[parent_revid]
201
parent_node = linegraph[parent_index][1]
202
if parent_node:
203
parent_col_index = parent_node[0]
204
else:
205
parent_col_index = None
206
col_search_order = \
207
_line_col_search_order(columns,
208
parent_col_index,
209
col_index)
210
211
# If this line is really long, break it.
212
if len(branch_id) > 0 and \
213
broken_line_length and \
214
parent_index - rev_index > broken_line_length:
215
child_line_col_index = \
216
_find_free_column(columns,
217
empty_column,
218
col_search_order,
219
(rev_index + 1,))
220
_mark_column_as_used(columns,
221
child_line_col_index,
222
(rev_index + 1,))
223
224
# Recall _line_col_search_order to reset it back to
225
# the beging.
226
col_search_order = \
227
_line_col_search_order(columns,
228
parent_col_index,
229
col_index)
230
parent_col_line_index = \
231
_find_free_column(columns,
232
empty_column,
233
col_search_order,
234
(parent_index - 1,))
235
_mark_column_as_used(columns,
236
parent_col_line_index,
237
(parent_index - 1,))
238
lines.append((rev_index,
239
parent_index,
240
(child_line_col_index,
241
parent_col_line_index)))
242
else :
243
line_col_index = col_index
244
if parent_index - rev_index >1:
245
line_range = range(rev_index + 1, parent_index)
246
line_col_index = \
247
_find_free_column(columns,
248
empty_column,
249
col_search_order,
250
line_range)
251
_mark_column_as_used(columns,
252
line_col_index,
253
line_range)
254
lines.append((rev_index,
255
parent_index,
256
(line_col_index,)))
257
258
for (child_index, parent_index, line_col_indexes) in lines:
259
(child_col_index, child_color) = linegraph[child_index][1]
260
(parent_col_index, parent_color) = linegraph[parent_index][1]
261
262
if len(line_col_indexes) == 1:
263
if parent_index - child_index == 1:
264
linegraph[child_index][2].append(
265
(child_col_index,
266
parent_col_index,
267
parent_color))
268
else:
269
# line from the child's column to the lines column
270
linegraph[child_index][2].append(
271
(child_col_index,
272
line_col_indexes[0],
273
parent_color))
274
# lines down the line's column
275
for line_part_index in range(child_index+1, parent_index-1):
276
linegraph[line_part_index][2].append(
277
(line_col_indexes[0],
278
line_col_indexes[0],
279
parent_color))
280
# line from the line's column to the parent's column
281
linegraph[parent_index-1][2].append(
282
(line_col_indexes[0],
283
parent_col_index,
284
parent_color))
285
else:
286
# Broken line
287
# line from the child's column to the lines column
288
linegraph[child_index][2].append(
289
(child_col_index,
290
line_col_indexes[0],
291
parent_color))
292
# Broken line end
293
linegraph[child_index+1][2].append(
294
(line_col_indexes[0],
295
None,
296
parent_color))
297
298
# Broken line end
299
linegraph[parent_index-2][2].append(
300
(None,
301
line_col_indexes[1],
302
parent_color))
303
# line from the line's column to the parent's column
304
linegraph[parent_index-1][2].append(
305
(line_col_indexes[1],
306
parent_col_index,
307
parent_color))
308
return (linegraph, revid_index, len(columns))
309
else:
310
return (linegraph, revid_index, 0)
311
312
313
def _branch_line_col_search_order(columns, parent_col_index):
314
for col_index in range(parent_col_index, len(columns)):
315
yield col_index
316
for col_index in range(parent_col_index-1, -1, -1):
317
yield col_index
318
319
def _line_col_search_order(columns, parent_col_index, child_col_index):
320
if parent_col_index is not None:
321
max_index = max(parent_col_index, child_col_index)
322
min_index = min(parent_col_index, child_col_index)
323
for col_index in range(max_index, min_index -1, -1):
324
yield col_index
325
else:
326
max_index = child_col_index
327
min_index = child_col_index
328
yield child_col_index
329
i = 1
330
while max_index + i < len(columns) or \
331
min_index - i > -1:
332
if max_index + i < len(columns):
333
yield max_index + i
334
if min_index - i > -1:
335
yield min_index - i
336
i += 1
337
338
def _find_free_column(columns, empty_column, col_search_order, line_range):
339
for col_index in col_search_order:
340
column = columns[col_index]
341
has_overlaping_line = False
342
for row_index in line_range:
343
if column[row_index]:
344
has_overlaping_line = True
345
break
346
if not has_overlaping_line:
347
break
348
else:
349
col_index = len(columns)
350
column = list(empty_column)
351
columns.append(column)
352
return col_index
353
354
def _mark_column_as_used(columns, col_index, line_range):
355
column = columns[col_index]
356
for row_index in line_range:
357
column[row_index] = True
358
359
def same_branch(a, b):
360
"""Return whether we think revisions a and b are on the same branch."""
361
if len(a.parent_ids) == 1:
362
# Defacto same branch if only parent
363
return True
364
elif a.committer == b.committer:
365
# Same committer so may as well be
366
return True
367
else:
368
return False
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