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# -*- coding: UTF-8 -*-
1
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"""Directed graph production.
2
3
 
3
4
This module contains the code to produce an ordered directed graph of a
5
6
window.
6
7
"""
7
8
 
8
 
__copyright__ = "Copyright 2005 Canonical Ltd."
 
9
__copyright__ = "Copyright © 2005 Canonical Ltd."
9
10
__author__    = "Scott James Remnant <scott@ubuntu.com>"
10
11
 
11
 
from bzrlib.revision import NULL_REVISION
12
12
from bzrlib.tsort import merge_sort
13
 
from bzrlib import ui
14
13
 
15
 
def linegraph(graph, start_revs, maxnum=None, broken_line_length=None,
16
 
              graph_data=True, mainline_only=False, root_progress=None):
 
14
def linegraph(repository, start_revs, maxnum, broken_line_length = None,
 
15
              graph_data = True, mainline_only = False):
17
16
    """Produce a directed graph of a bzr repository.
18
17
 
19
18
    Returns a tuple of (line_graph, revid_index, columns_len) where
42
41
    It's up to you how to actually draw the nodes and lines (straight,
43
42
    curved, kinked, etc.) and to pick the actual colours for each index.
44
43
    """
45
 
    assert isinstance(start_revs, list)
46
 
    def update_root_progress(step_number):
47
 
        """IFF our container received a root progress bar, then update it."""
48
 
        if root_progress is not None:
49
 
            root_progress.update(None, step_number)
50
 
 
 
44
    
 
45
    graph = repository.get_graph()
51
46
    graph_parents = {}
52
 
    ghosts = set()
53
47
    graph_children = {}
54
 
    update_root_progress(1)
55
 
    progress_bar = ui.ui_factory.nested_progress_bar()
56
 
    try:
57
 
        progress_bar.update("Arranging tree fragments")
58
 
        for i, (revid, parent_revids) in enumerate(graph.iter_ancestry(start_revs)):
59
 
            if i % 25 == 0:
60
 
                progress_bar.tick()
61
 
            if parent_revids is None:
62
 
                ghosts.add(revid)
63
 
                continue
64
 
            if parent_revids == (NULL_REVISION,):
65
 
                graph_parents[revid] = ()
66
 
            else:
67
 
                graph_parents[revid] = parent_revids
68
 
            for parent in parent_revids:
69
 
                graph_children.setdefault(parent, []).append(revid)
70
 
            graph_children.setdefault(revid, [])
71
 
    finally:
72
 
        progress_bar.finished()
 
48
    for (revid, parent_revids) in graph.iter_ancestry(start_revs):
 
49
        graph_parents[revid] = parent_revids
 
50
        graph_children[revid] = []
73
51
 
74
 
    update_root_progress(2)
75
 
    progress_bar = ui.ui_factory.nested_progress_bar()
76
 
    try:
77
 
        progress_bar.update("Removing ghosts", 0, len(ghosts))
78
 
        for i, ghost in enumerate(ghosts):
79
 
            if i % 25 == 0:
80
 
                progress_bar.update(None, i)
81
 
            for ghost_child in graph_children[ghost]:
82
 
                graph_parents[ghost_child] = [p for p in graph_parents[ghost_child]
83
 
                                              if p not in ghosts]
84
 
    finally:
85
 
        progress_bar.finished()
86
52
    graph_parents["top:"] = start_revs
87
53
 
88
54
    if len(graph_parents)>0:
114
80
    
115
81
    linegraph = []    
116
82
    
117
 
    update_root_progress(3)
118
 
    progress_bar = ui.ui_factory.nested_progress_bar()
119
 
    try:
120
 
        progress_bar.update("Finding nodes", 0, len(merge_sorted_revisions))
121
 
        for (rev_index, (sequence_number,
122
 
                         revid,
123
 
                         merge_depth,
124
 
                         revno_sequence,
125
 
                         end_of_merge)) in enumerate(merge_sorted_revisions):
126
 
 
127
 
            if rev_index % 25 == 0:
128
 
                progress_bar.update(None, rev_index)
129
 
            if maxnum and rev_index >= maxnum:
130
 
                break
131
 
            revid_index[revid] = rev_index
132
 
            
133
 
            parents = graph_parents[revid]
134
 
            linegraph.append([revid,
135
 
                              None,
136
 
                              [],
137
 
                              parents,
138
 
                              None,
139
 
                              revno_sequence])
140
 
            
141
 
            if graph_data:
142
 
                revno_index[revno_sequence] = rev_index
143
 
                
144
 
                branch_id = revno_sequence[0:-1]
145
 
                
146
 
                branch_line = None
147
 
                if branch_id not in branch_lines:
148
 
                    branch_line = []
149
 
                    branch_lines[branch_id] = branch_line
150
 
                else:
151
 
                    branch_line = branch_lines[branch_id]
152
 
                
153
 
                branch_line.append(rev_index)        
154
 
    finally:
155
 
        progress_bar.finished()
 
83
    for (rev_index, (sequence_number,
 
84
                     revid,
 
85
                     merge_depth,
 
86
                     revno_sequence,
 
87
                     end_of_merge)) in enumerate(merge_sorted_revisions):
 
88
        if maxnum and rev_index >= maxnum:
 
89
            break
 
90
        revid_index[revid] = rev_index
 
91
        
 
92
        parents = graph_parents[revid]
 
93
        for parent_revid in parents:
 
94
            graph_children[parent_revid].append(revid)
 
95
        
 
96
        linegraph.append([revid,
 
97
                          None,
 
98
                          [],
 
99
                          parents,
 
100
                          None,
 
101
                          revno_sequence])
 
102
        
 
103
        if graph_data:
 
104
            revno_index[revno_sequence] = rev_index
 
105
            
 
106
            branch_id = revno_sequence[0:-1]
 
107
            
 
108
            branch_line = None
 
109
            if branch_id not in branch_lines:
 
110
                branch_line = []
 
111
                branch_lines[branch_id] = branch_line
 
112
            else:
 
113
                branch_line = branch_lines[branch_id]
 
114
            
 
115
            branch_line.append(rev_index)        
156
116
 
157
117
    if graph_data:
158
118
        branch_ids = branch_lines.keys()
180
140
        columns = [list(empty_column)]
181
141
        
182
142
        
183
 
        update_root_progress(4)
184
 
        progress_bar = ui.ui_factory.nested_progress_bar()
185
 
        try:
186
 
            progress_bar.update("Organizing edges", 0, len(branch_ids))
187
 
            for i, branch_id in enumerate(branch_ids):
188
 
                if i % 25 == 0:
189
 
                    progress_bar.update(None, i)
190
 
                branch_line = branch_lines[branch_id]
191
 
                
192
 
                # Find the col_index for the direct parent branch. This will be the
193
 
                # starting point when looking for a free column.
194
 
                parent_col_index = 0
195
 
                parent_index = None
196
 
                if len(branch_id) > 1:
197
 
                    parent_revno = branch_id[0:-1]
198
 
                    if parent_revno in revno_index:
199
 
                        parent_index = revno_index[parent_revno]
 
143
        for branch_id in branch_ids:
 
144
            branch_line = branch_lines[branch_id]
 
145
            
 
146
            # Find the col_index for the direct parent branch. This will be the
 
147
            # starting point when looking for a free column.
 
148
            parent_col_index = 0
 
149
            parent_index = None
 
150
            if len(branch_id) > 1:
 
151
                parent_revno = branch_id[0:-1]
 
152
                if parent_revno in revno_index:
 
153
                    parent_index = revno_index[parent_revno]
 
154
                    parent_node = linegraph[parent_index][1]
 
155
                    if parent_node:
 
156
                        parent_col_index = parent_node[0]
 
157
                    
 
158
            
 
159
            col_search_order = _branch_line_col_search_order(columns,
 
160
                                                             parent_col_index)
 
161
            color = reduce(lambda x, y: x+y, branch_id, 0)
 
162
            cur_cont_line = []
 
163
            
 
164
            line_range = []
 
165
            last_rev_index = None
 
166
            for rev_index in branch_line:
 
167
                if last_rev_index:
 
168
                    if broken_line_length and \
 
169
                       rev_index - last_rev_index > broken_line_length:
 
170
                        line_range.append(last_rev_index+1)
 
171
                        line_range.append(rev_index-1)
 
172
                    else:
 
173
                        line_range.extend(range(last_rev_index+1, rev_index))
 
174
                
 
175
                line_range.append(rev_index)
 
176
                last_rev_index = rev_index
 
177
            
 
178
            if parent_index:
 
179
                if broken_line_length and \
 
180
                   parent_index - last_rev_index > broken_line_length:
 
181
                    line_range.append(last_rev_index+1)
 
182
                else:
 
183
                    line_range.extend(range(last_rev_index+1, parent_index))
 
184
            
 
185
            col_index = _find_free_column(columns,
 
186
                                          empty_column,
 
187
                                          col_search_order,
 
188
                                          line_range)
 
189
            node = (col_index, color)
 
190
            for rev_index in branch_line:
 
191
                linegraph[rev_index][1] = node
 
192
                columns[col_index][rev_index] = True
 
193
            
 
194
            for rev_index in branch_line:
 
195
                (sequence_number,
 
196
                     revid,
 
197
                     merge_depth,
 
198
                     revno_sequence,
 
199
                     end_of_merge) = merge_sorted_revisions[rev_index]
 
200
                
 
201
                linegraph[rev_index][4] = graph_children[revid]
 
202
                col_index = linegraph[rev_index][1][0]
 
203
                
 
204
                for parent_revid in graph_parents[revid]:
 
205
                    if parent_revid in revid_index:
 
206
                        
 
207
                        parent_index = revid_index[parent_revid]                            
200
208
                        parent_node = linegraph[parent_index][1]
201
209
                        if parent_node:
202
210
                            parent_col_index = parent_node[0]
203
 
                        
204
 
                
205
 
                col_search_order = _branch_line_col_search_order(columns,
206
 
                                                                 parent_col_index)
207
 
                color = reduce(lambda x, y: x+y, branch_id, 0)
208
 
                cur_cont_line = []
209
 
                
210
 
                line_range = []
211
 
                last_rev_index = None
212
 
                for rev_index in branch_line:
213
 
                    if last_rev_index:
214
 
                        if broken_line_length and \
215
 
                           rev_index - last_rev_index > broken_line_length:
216
 
                            line_range.append(last_rev_index+1)
217
 
                            line_range.append(rev_index-1)
218
211
                        else:
219
 
                            line_range.extend(range(last_rev_index+1, rev_index))
220
 
                    
221
 
                    line_range.append(rev_index)
222
 
                    last_rev_index = rev_index
223
 
                
224
 
                if parent_index:
225
 
                    if broken_line_length and \
226
 
                       parent_index - last_rev_index > broken_line_length:
227
 
                        line_range.append(last_rev_index+1)
228
 
                    else:
229
 
                        line_range.extend(range(last_rev_index+1, parent_index))
230
 
                
231
 
                col_index = _find_free_column(columns,
232
 
                                              empty_column,
233
 
                                              col_search_order,
234
 
                                              line_range)
235
 
                node = (col_index, color)
236
 
                for rev_index in branch_line:
237
 
                    linegraph[rev_index][1] = node
238
 
                    columns[col_index][rev_index] = True
239
 
                
240
 
                for rev_index in branch_line:
241
 
                    (sequence_number,
242
 
                         revid,
243
 
                         merge_depth,
244
 
                         revno_sequence,
245
 
                         end_of_merge) = merge_sorted_revisions[rev_index]
246
 
                    
247
 
                    linegraph[rev_index][4] = graph_children[revid]
248
 
                    col_index = linegraph[rev_index][1][0]
249
 
                    
250
 
                    for parent_revid in graph_parents[revid]:
251
 
                        if parent_revid in revid_index:
252
 
                            
253
 
                            parent_index = revid_index[parent_revid]                            
254
 
                            parent_node = linegraph[parent_index][1]
255
 
                            if parent_node:
256
 
                                parent_col_index = parent_node[0]
257
 
                            else:
258
 
                                parent_col_index = None
 
212
                            parent_col_index = None
 
213
                        col_search_order = \
 
214
                                _line_col_search_order(columns,
 
215
                                                       parent_col_index,
 
216
                                                       col_index)
 
217
                            
 
218
                        # If this line is really long, break it.
 
219
                        if len(branch_id) > 0 and \
 
220
                           broken_line_length and \
 
221
                           parent_index - rev_index > broken_line_length:
 
222
                            child_line_col_index = \
 
223
                                _find_free_column(columns,
 
224
                                                  empty_column,
 
225
                                                  col_search_order,
 
226
                                                  (rev_index + 1,))
 
227
                            _mark_column_as_used(columns,
 
228
                                                 child_line_col_index,
 
229
                                                 (rev_index + 1,))
 
230
                            
 
231
                            # Recall _line_col_search_order to reset it back to
 
232
                            # the beging.
259
233
                            col_search_order = \
260
234
                                    _line_col_search_order(columns,
261
235
                                                           parent_col_index,
262
236
                                                           col_index)
263
 
                                
264
 
                            # If this line is really long, break it.
265
 
                            if len(branch_id) > 0 and \
266
 
                               broken_line_length and \
267
 
                               parent_index - rev_index > broken_line_length:
268
 
                                child_line_col_index = \
269
 
                                    _find_free_column(columns,
270
 
                                                      empty_column,
271
 
                                                      col_search_order,
272
 
                                                      (rev_index + 1,))
273
 
                                _mark_column_as_used(columns,
274
 
                                                     child_line_col_index,
275
 
                                                     (rev_index + 1,))
276
 
                                
277
 
                                # Recall _line_col_search_order to reset it back to
278
 
                                # the beging.
279
 
                                col_search_order = \
280
 
                                        _line_col_search_order(columns,
281
 
                                                               parent_col_index,
282
 
                                                               col_index)
283
 
                                parent_col_line_index = \
284
 
                                    _find_free_column(columns,
285
 
                                                      empty_column,
286
 
                                                      col_search_order,
287
 
                                                      (parent_index - 1,))
288
 
                                _mark_column_as_used(columns,
289
 
                                                     parent_col_line_index,
290
 
                                                     (parent_index - 1,))
291
 
                                lines.append((rev_index,
292
 
                                              parent_index,
293
 
                                              (child_line_col_index,
294
 
                                               parent_col_line_index)))
295
 
                            else :
296
 
                                line_col_index = col_index
297
 
                                if parent_index - rev_index >1:
298
 
                                    line_range = range(rev_index + 1, parent_index)
299
 
                                    line_col_index = \
300
 
                                        _find_free_column(columns,
301
 
                                                          empty_column,
302
 
                                                          col_search_order,
303
 
                                                          line_range)
304
 
                                    _mark_column_as_used(columns,
305
 
                                                         line_col_index,
306
 
                                                         line_range)
307
 
                                lines.append((rev_index,
308
 
                                              parent_index,
309
 
                                              (line_col_index,)))
310
 
        finally:
311
 
            progress_bar.finished()
 
237
                            parent_col_line_index = \
 
238
                                _find_free_column(columns,
 
239
                                                  empty_column,
 
240
                                                  col_search_order,
 
241
                                                  (parent_index - 1,))
 
242
                            _mark_column_as_used(columns,
 
243
                                                 parent_col_line_index,
 
244
                                                 (parent_index - 1,))
 
245
                            lines.append((rev_index,
 
246
                                          parent_index,
 
247
                                          (child_line_col_index,
 
248
                                           parent_col_line_index)))
 
249
                        else :
 
250
                            line_col_index = col_index
 
251
                            if parent_index - rev_index >1:
 
252
                                line_range = range(rev_index + 1, parent_index)
 
253
                                line_col_index = \
 
254
                                    _find_free_column(columns,
 
255
                                                      empty_column,
 
256
                                                      col_search_order,
 
257
                                                      line_range)
 
258
                                _mark_column_as_used(columns,
 
259
                                                     line_col_index,
 
260
                                                     line_range)
 
261
                            lines.append((rev_index,
 
262
                                          parent_index,
 
263
                                          (line_col_index,)))
312
264
        
313
 
        update_root_progress(5)
314
 
        progress_bar = ui.ui_factory.nested_progress_bar()
315
 
        try:
316
 
            progress_bar.update("Prettifying graph", 0, len(lines))
317
 
            for i, (child_index, parent_index, line_col_indexes) in enumerate(lines):
318
 
                if i % 25 == 0:
319
 
                    progress_bar.update(None, i)
320
 
                (child_col_index, child_color) = linegraph[child_index][1]
321
 
                (parent_col_index, parent_color) = linegraph[parent_index][1]
322
 
                
323
 
                if len(line_col_indexes) == 1:
324
 
                    if parent_index - child_index == 1:
325
 
                        linegraph[child_index][2].append(
326
 
                            (child_col_index,
327
 
                             parent_col_index,
328
 
                             parent_color))
329
 
                    else:
330
 
                        # line from the child's column to the lines column
331
 
                        linegraph[child_index][2].append(
332
 
                            (child_col_index,
333
 
                             line_col_indexes[0],
334
 
                             parent_color))
335
 
                        # lines down the line's column
336
 
                        for line_part_index in range(child_index+1, parent_index-1):
337
 
                            linegraph[line_part_index][2].append(
338
 
                                (line_col_indexes[0],   
339
 
                                 line_col_indexes[0],
340
 
                                 parent_color))
341
 
                        # line from the line's column to the parent's column
342
 
                        linegraph[parent_index-1][2].append(
343
 
                            (line_col_indexes[0],
344
 
                             parent_col_index,
345
 
                             parent_color))
 
265
        for (child_index, parent_index, line_col_indexes) in lines:
 
266
            (child_col_index, child_color) = linegraph[child_index][1]
 
267
            (parent_col_index, parent_color) = linegraph[parent_index][1]
 
268
            
 
269
            if len(line_col_indexes) == 1:
 
270
                if parent_index - child_index == 1:
 
271
                    linegraph[child_index][2].append(
 
272
                        (child_col_index,
 
273
                         parent_col_index,
 
274
                         parent_color))
346
275
                else:
347
 
                    # Broken line
348
276
                    # line from the child's column to the lines column
349
277
                    linegraph[child_index][2].append(
350
278
                        (child_col_index,
351
279
                         line_col_indexes[0],
352
280
                         parent_color))
353
 
                    # Broken line end
354
 
                    linegraph[child_index+1][2].append(
355
 
                        (line_col_indexes[0],
356
 
                         None,
357
 
                         parent_color))
358
 
                    
359
 
                    # Broken line end 
360
 
                    linegraph[parent_index-2][2].append(
361
 
                        (None,
362
 
                         line_col_indexes[1],
363
 
                         parent_color))
 
281
                    # lines down the line's column
 
282
                    for line_part_index in range(child_index+1, parent_index-1):
 
283
                        linegraph[line_part_index][2].append(
 
284
                            (line_col_indexes[0],   
 
285
                             line_col_indexes[0],
 
286
                             parent_color))
364
287
                    # line from the line's column to the parent's column
365
288
                    linegraph[parent_index-1][2].append(
366
 
                        (line_col_indexes[1],
 
289
                        (line_col_indexes[0],
367
290
                         parent_col_index,
368
291
                         parent_color))
369
 
        finally:
370
 
            progress_bar.finished()
 
292
            else:
 
293
                # Broken line
 
294
                # line from the child's column to the lines column
 
295
                linegraph[child_index][2].append(
 
296
                    (child_col_index,
 
297
                     line_col_indexes[0],
 
298
                     parent_color))
 
299
                # Broken line end
 
300
                linegraph[child_index+1][2].append(
 
301
                    (line_col_indexes[0],
 
302
                     None,
 
303
                     parent_color))
 
304
                
 
305
                # Broken line end 
 
306
                linegraph[parent_index-2][2].append(
 
307
                    (None,
 
308
                     line_col_indexes[1],
 
309
                     parent_color))
 
310
                # line from the line's column to the parent's column
 
311
                linegraph[parent_index-1][2].append(
 
312
                    (line_col_indexes[1],
 
313
                     parent_col_index,
 
314
                     parent_color))
371
315
        return (linegraph, revid_index, len(columns))
372
316
    else:
373
317
        return (linegraph, revid_index, 0)