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  • Committer: John Arbash Meinel
  • Date: 2007-10-02 23:08:12 UTC
  • mto: (322.1.1 trunk) (330.3.3 trunk)
  • mto: This revision was merged to the branch mainline in revision 368.
  • Revision ID: john@arbash-meinel.com-20071002230812-h8i6pq8fwvodute4
Start testing with Unicode data.
It seems there is some brokenness with serializing Unicode messages.
But otherwise everything seems to be working.

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removed removed

Lines of Context:
 
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# -*- coding: UTF-8 -*-
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"""Directed graph production.
2
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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
 
 
15
 
 
16
 
def linegraph(graph, start_revs, maxnum=None, broken_line_length=None,
17
 
              graph_data=True, mainline_only=False, root_progress=None):
18
 
    """Produce a directed graph of a bzr repository.
 
13
 
 
14
def linegraph(branch, start, maxnum):
 
15
    """Produce a directed graph of a bzr branch.
19
16
 
20
17
    Returns a tuple of (line_graph, revid_index, columns_len) where
21
18
    * line_graph is a list of tuples of (revid,
27
24
    * revid_index is a dict of each revision with the key being the revid, and
28
25
      the value the row index, and
29
26
    * columns_len is the number of columns need to draw the line graph.
30
 
 
 
27
    
31
28
 
32
29
    Node is a tuple of (column, colour) with column being a zero-indexed
33
30
    column number of the graph that this revision represents and colour
43
40
    It's up to you how to actually draw the nodes and lines (straight,
44
41
    curved, kinked, etc.) and to pick the actual colours for each index.
45
42
    """
46
 
    assert isinstance(start_revs, list)
47
 
    def update_root_progress(step_number):
48
 
        """IFF our container received a root progress bar, then update it."""
49
 
        if root_progress is not None:
50
 
            root_progress.update(None, step_number)
51
 
 
52
 
    graph_parents = {}
53
 
    ghosts = set()
 
43
    
 
44
    # FIXME: This should be configurable
 
45
    BROKEN_LINE_LENGTH = 32
 
46
    
 
47
    # We get the mainline so we can pass it to merge_sort to make merge_sort
 
48
    # run faster.
 
49
    mainline = branch.revision_history()
 
50
    graph_parents = branch.repository.get_revision_graph(start)
54
51
    graph_children = {}
55
 
    update_root_progress(1)
56
 
    progress_bar = ui.ui_factory.nested_progress_bar()
57
 
    try:
58
 
        progress_bar.update("Arranging tree fragments")
59
 
        for i, (revid, parent_revids) in enumerate(graph.iter_ancestry(start_revs)):
60
 
            if i % 25 == 0:
61
 
                progress_bar.tick()
62
 
            if parent_revids is None:
63
 
                ghosts.add(revid)
64
 
                continue
65
 
            if parent_revids == (NULL_REVISION,):
66
 
                graph_parents[revid] = ()
67
 
            else:
68
 
                graph_parents[revid] = parent_revids
69
 
            for parent in parent_revids:
70
 
                graph_children.setdefault(parent, []).append(revid)
71
 
            graph_children.setdefault(revid, [])
72
 
    finally:
73
 
        progress_bar.finished()
74
 
 
75
 
    update_root_progress(2)
76
 
    progress_bar = ui.ui_factory.nested_progress_bar()
77
 
    try:
78
 
        progress_bar.update("Removing ghosts", 0, len(ghosts))
79
 
        for i, ghost in enumerate(ghosts):
80
 
            if i % 25 == 0:
81
 
                progress_bar.update(None, i)
82
 
            for ghost_child in graph_children[ghost]:
83
 
                graph_parents[ghost_child] = [p for p in graph_parents[ghost_child]
84
 
                                              if p not in ghosts]
85
 
    finally:
86
 
        progress_bar.finished()
87
 
    graph_parents["top:"] = start_revs
88
 
 
89
 
    if len(graph_parents)>0:
90
 
        merge_sorted_revisions = merge_sort(
91
 
            graph_parents,
92
 
            "top:",
93
 
            generate_revno=True)
94
 
    else:
95
 
        merge_sorted_revisions = ()
96
 
 
97
 
    if mainline_only:
98
 
        merge_sorted_revisions = [elem for elem in merge_sorted_revisions \
99
 
                                  if len(elem[3])==1 ]
100
 
 
101
 
    assert merge_sorted_revisions[0][1] == "top:"
102
 
    merge_sorted_revisions = merge_sorted_revisions[1:]
103
 
 
 
52
    for revid in graph_parents.iterkeys():
 
53
        graph_children[revid] = []
 
54
 
 
55
    merge_sorted_revisions = merge_sort(
 
56
        graph_parents,
 
57
        start,
 
58
        mainline,
 
59
        generate_revno=True)
 
60
    
104
61
    revid_index = {}
105
62
    revno_index = {}
106
 
 
 
63
    
107
64
    # This will hold an item for each "branch". For a revisions, the revsion
108
65
    # number less the least significant digit is the branch_id, and used as the
109
66
    # key for the dict. Hence revision with the same revsion number less the
112
69
    # and these two revisions will be in the same branch line. Each value is
113
70
    # a list of rev_indexes in the branch.
114
71
    branch_lines = {}
115
 
 
116
 
    linegraph = []
117
 
 
118
 
    update_root_progress(3)
119
 
    progress_bar = ui.ui_factory.nested_progress_bar()
120
 
    try:
121
 
        progress_bar.update("Finding nodes", 0, len(merge_sorted_revisions))
122
 
        for (rev_index, (sequence_number,
123
 
                         revid,
124
 
                         merge_depth,
125
 
                         revno_sequence,
126
 
                         end_of_merge)) in enumerate(merge_sorted_revisions):
127
 
 
128
 
            if rev_index % 25 == 0:
129
 
                progress_bar.update(None, rev_index)
130
 
            if maxnum and rev_index >= maxnum:
131
 
                break
132
 
            revid_index[revid] = rev_index
133
 
 
134
 
            parents = graph_parents[revid]
135
 
            linegraph.append([revid,
136
 
                              None,
137
 
                              [],
138
 
                              parents,
139
 
                              None,
140
 
                              revno_sequence])
141
 
 
142
 
            if graph_data:
143
 
                revno_index[revno_sequence] = rev_index
144
 
 
145
 
                branch_id = revno_sequence[0:-1]
146
 
 
147
 
                branch_line = None
148
 
                if branch_id not in branch_lines:
149
 
                    branch_line = []
150
 
                    branch_lines[branch_id] = branch_line
151
 
                else:
152
 
                    branch_line = branch_lines[branch_id]
153
 
 
154
 
                branch_line.append(rev_index)
155
 
    finally:
156
 
        progress_bar.finished()
157
 
 
158
 
    if graph_data:
159
 
        branch_ids = branch_lines.keys()
160
 
 
161
 
        def branch_id_cmp(x, y):
162
 
            """Compaire branch_id's first by the number of digits, then reversed
163
 
            by their value"""
164
 
            len_x = len(x)
165
 
            len_y = len(y)
166
 
            if len_x == len_y:
167
 
                return -cmp(x, y)
168
 
            return cmp(len_x, len_y)
169
 
 
170
 
        branch_ids.sort(branch_id_cmp)
171
 
        # This will hold a tuple of (child_index, parent_index, col_index) for each
172
 
        # line that needs to be drawn. If col_index is not none, then the line is
173
 
        # drawn along that column, else the the line can be drawn directly between
174
 
        # the child and parent because either the child and parent are in the same
175
 
        # branch line, or the child and parent are 1 row apart.
176
 
        lines = []
177
 
        empty_column = [False for i in range(len(graph_parents))]
178
 
        # This will hold a bit map for each cell. If the cell is true, then the
179
 
        # cell allready contains a node or line. This use when deciding what column
180
 
        # to place a branch line or line in, without it overlaping something else.
181
 
        columns = [list(empty_column)]
182
 
 
183
 
 
184
 
        update_root_progress(4)
185
 
        progress_bar = ui.ui_factory.nested_progress_bar()
186
 
        try:
187
 
            progress_bar.update("Organizing edges", 0, len(branch_ids))
188
 
            for i, branch_id in enumerate(branch_ids):
189
 
                if i % 25 == 0:
190
 
                    progress_bar.update(None, i)
191
 
                branch_line = branch_lines[branch_id]
192
 
 
193
 
                # Find the col_index for the direct parent branch. This will be the
194
 
                # starting point when looking for a free column.
195
 
                parent_col_index = 0
196
 
                parent_index = None
197
 
                if len(branch_id) > 1:
198
 
                    parent_revno = branch_id[0:-1]
199
 
                    if parent_revno in revno_index:
200
 
                        parent_index = revno_index[parent_revno]
201
 
                        parent_node = linegraph[parent_index][1]
202
 
                        if parent_node:
203
 
                            parent_col_index = parent_node[0]
204
 
 
205
 
 
206
 
                col_search_order = _branch_line_col_search_order(columns,
207
 
                                                                 parent_col_index)
208
 
                color = reduce(lambda x, y: x+y, branch_id, 0)
209
 
                cur_cont_line = []
210
 
 
211
 
                line_range = []
212
 
                last_rev_index = None
213
 
                for rev_index in branch_line:
214
 
                    if last_rev_index:
215
 
                        if broken_line_length and \
216
 
                           rev_index - last_rev_index > broken_line_length:
217
 
                            line_range.append(last_rev_index+1)
218
 
                            line_range.append(rev_index-1)
219
 
                        else:
220
 
                            line_range.extend(range(last_rev_index+1, rev_index))
221
 
 
222
 
                    line_range.append(rev_index)
223
 
                    last_rev_index = rev_index
224
 
 
225
 
                if parent_index:
226
 
                    if broken_line_length and \
227
 
                       parent_index - last_rev_index > broken_line_length:
228
 
                        line_range.append(last_rev_index+1)
229
 
                    else:
230
 
                        line_range.extend(range(last_rev_index+1, parent_index))
231
 
 
232
 
                col_index = _find_free_column(columns,
233
 
                                              empty_column,
234
 
                                              col_search_order,
235
 
                                              line_range)
236
 
                node = (col_index, color)
237
 
                for rev_index in branch_line:
238
 
                    linegraph[rev_index][1] = node
239
 
                    columns[col_index][rev_index] = True
240
 
 
241
 
                for rev_index in branch_line:
242
 
                    (sequence_number,
243
 
                         revid,
244
 
                         merge_depth,
245
 
                         revno_sequence,
246
 
                         end_of_merge) = merge_sorted_revisions[rev_index]
247
 
 
248
 
                    linegraph[rev_index][4] = graph_children[revid]
249
 
                    col_index = linegraph[rev_index][1][0]
250
 
 
251
 
                    for parent_revid in graph_parents[revid]:
252
 
                        if parent_revid in revid_index:
253
 
 
254
 
                            parent_index = revid_index[parent_revid]
255
 
                            parent_node = linegraph[parent_index][1]
256
 
                            if parent_node:
257
 
                                parent_col_index = parent_node[0]
258
 
                            else:
259
 
                                parent_col_index = None
260
 
                            col_search_order = \
261
 
                                    _line_col_search_order(columns,
262
 
                                                           parent_col_index,
263
 
                                                           col_index)
264
 
 
265
 
                            # If this line is really long, break it.
266
 
                            if len(branch_id) > 0 and \
267
 
                               broken_line_length and \
268
 
                               parent_index - rev_index > broken_line_length:
269
 
                                child_line_col_index = \
270
 
                                    _find_free_column(columns,
271
 
                                                      empty_column,
272
 
                                                      col_search_order,
273
 
                                                      (rev_index + 1,))
274
 
                                _mark_column_as_used(columns,
275
 
                                                     child_line_col_index,
276
 
                                                     (rev_index + 1,))
277
 
 
278
 
                                # Recall _line_col_search_order to reset it back to
279
 
                                # the beging.
280
 
                                col_search_order = \
281
 
                                        _line_col_search_order(columns,
282
 
                                                               parent_col_index,
283
 
                                                               col_index)
284
 
                                parent_col_line_index = \
285
 
                                    _find_free_column(columns,
286
 
                                                      empty_column,
287
 
                                                      col_search_order,
288
 
                                                      (parent_index - 1,))
289
 
                                _mark_column_as_used(columns,
290
 
                                                     parent_col_line_index,
291
 
                                                     (parent_index - 1,))
292
 
                                lines.append((rev_index,
293
 
                                              parent_index,
294
 
                                              (child_line_col_index,
295
 
                                               parent_col_line_index)))
296
 
                            else :
297
 
                                line_col_index = col_index
298
 
                                if parent_index - rev_index >1:
299
 
                                    line_range = range(rev_index + 1, parent_index)
300
 
                                    line_col_index = \
301
 
                                        _find_free_column(columns,
302
 
                                                          empty_column,
303
 
                                                          col_search_order,
304
 
                                                          line_range)
305
 
                                    _mark_column_as_used(columns,
306
 
                                                         line_col_index,
307
 
                                                         line_range)
308
 
                                lines.append((rev_index,
309
 
                                              parent_index,
310
 
                                              (line_col_index,)))
311
 
        finally:
312
 
            progress_bar.finished()
313
 
 
314
 
        update_root_progress(5)
315
 
        progress_bar = ui.ui_factory.nested_progress_bar()
316
 
        try:
317
 
            progress_bar.update("Prettifying graph", 0, len(lines))
318
 
            for i, (child_index, parent_index, line_col_indexes) in enumerate(lines):
319
 
                if i % 25 == 0:
320
 
                    progress_bar.update(None, i)
321
 
                (child_col_index, child_color) = linegraph[child_index][1]
322
 
                (parent_col_index, parent_color) = linegraph[parent_index][1]
323
 
 
324
 
                if len(line_col_indexes) == 1:
325
 
                    if parent_index - child_index == 1:
326
 
                        linegraph[child_index][2].append(
327
 
                            (child_col_index,
328
 
                             parent_col_index,
329
 
                             parent_color))
330
 
                    else:
331
 
                        # line from the child's column to the lines column
332
 
                        linegraph[child_index][2].append(
333
 
                            (child_col_index,
334
 
                             line_col_indexes[0],
335
 
                             parent_color))
336
 
                        # lines down the line's column
337
 
                        for line_part_index in range(child_index+1, parent_index-1):
338
 
                            linegraph[line_part_index][2].append(
339
 
                                (line_col_indexes[0], 
340
 
                                 line_col_indexes[0],
341
 
                                 parent_color))
342
 
                        # line from the line's column to the parent's column
343
 
                        linegraph[parent_index-1][2].append(
344
 
                            (line_col_indexes[0],
345
 
                             parent_col_index,
346
 
                             parent_color))
347
 
                else:
348
 
                    # Broken line
349
 
                    # line from the child's column to the lines column
350
 
                    linegraph[child_index][2].append(
351
 
                        (child_col_index,
 
72
    
 
73
    linegraph = []    
 
74
    
 
75
    for (rev_index, (sequence_number,
 
76
                     revid,
 
77
                     merge_depth,
 
78
                     revno_sequence,
 
79
                     end_of_merge)) in enumerate(merge_sorted_revisions):
 
80
        if maxnum and rev_index >= maxnum:
 
81
            break
 
82
        revid_index[revid] = rev_index
 
83
        revno_index[revno_sequence] = rev_index
 
84
        
 
85
        branch_id = revno_sequence[0:-1]
 
86
        
 
87
        branch_line = None
 
88
        if branch_id not in branch_lines:
 
89
            branch_line = []
 
90
            branch_lines[branch_id] = branch_line
 
91
        else:
 
92
            branch_line = branch_lines[branch_id]
 
93
        
 
94
        branch_line.append(rev_index)
 
95
        
 
96
        parents = graph_parents[revid]
 
97
        for parent_revid in parents:
 
98
            graph_children[parent_revid].append(revid)
 
99
        
 
100
        linegraph.append([revid,
 
101
                          None,
 
102
                          [],
 
103
                          parents,
 
104
                          None,
 
105
                          revno_sequence])
 
106
 
 
107
    branch_ids = branch_lines.keys()
 
108
    
 
109
    def branch_id_cmp(x, y):
 
110
        """Compaire branch_id's first by the number of digits, then reversed
 
111
        by their value"""
 
112
        len_x = len(x)
 
113
        len_y = len(y)
 
114
        if len_x == len_y:
 
115
            return -cmp(x, y)
 
116
        return cmp(len_x, len_y)
 
117
    
 
118
    branch_ids.sort(branch_id_cmp)
 
119
    # This will hold a tuple of (child_index, parent_index, col_index) for each
 
120
    # line that needs to be drawn. If col_index is not none, then the line is
 
121
    # drawn along that column, else the the line can be drawn directly between
 
122
    # the child and parent because either the child and parent are in the same
 
123
    # branch line, or the child and parent are 1 row apart.
 
124
    lines = []
 
125
    empty_column = [False for i in range(len(graph_parents))]
 
126
    # This will hold a bit map for each cell. If the cell is true, then the
 
127
    # cell allready contains a node or line. This use when deciding what column
 
128
    # to place a branch line or line in, without it overlaping something else.
 
129
    columns = [list(empty_column)]
 
130
    
 
131
    
 
132
    for branch_id in branch_ids:
 
133
        branch_line = branch_lines[branch_id]
 
134
        
 
135
        # Find the col_index for the direct parent branch. This will be the
 
136
        # starting point when looking for a free column.
 
137
        parent_col_index = 0
 
138
        parent_index = None
 
139
        if len(branch_id) > 1:
 
140
            parent_revno = branch_id[0:-1]
 
141
            if parent_revno in revno_index:
 
142
                parent_index = revno_index[parent_revno]
 
143
                parent_node = linegraph[parent_index][1]
 
144
                if parent_node:
 
145
                    parent_col_index = parent_node[0]
 
146
                
 
147
        
 
148
        col_search_order = _branch_line_col_search_order(columns,
 
149
                                                         parent_col_index)
 
150
        color = reduce(lambda x, y: x+y, branch_id, 0)
 
151
        cur_cont_line = []
 
152
        
 
153
        line_range = []
 
154
        last_rev_index = None
 
155
        for rev_index in branch_line:
 
156
            if last_rev_index:
 
157
                if BROKEN_LINE_LENGTH and \
 
158
                   rev_index - last_rev_index > BROKEN_LINE_LENGTH:
 
159
                    line_range.append(last_rev_index+1)
 
160
                    line_range.append(rev_index-1)
 
161
                else:
 
162
                    line_range.extend(range(last_rev_index+1, rev_index))
 
163
            
 
164
            line_range.append(rev_index)
 
165
            last_rev_index = rev_index
 
166
        
 
167
        if parent_index:
 
168
            if BROKEN_LINE_LENGTH and \
 
169
               parent_index - last_rev_index > BROKEN_LINE_LENGTH:
 
170
                line_range.append(last_rev_index+1)
 
171
            else:
 
172
                line_range.extend(range(last_rev_index+1, parent_index))
 
173
        
 
174
        col_index = _find_free_column(columns,
 
175
                                      empty_column,
 
176
                                      col_search_order,
 
177
                                      line_range)
 
178
        node = (col_index, color)
 
179
        for rev_index in branch_line:
 
180
            linegraph[rev_index][1] = node
 
181
            columns[col_index][rev_index] = True
 
182
        
 
183
        for rev_index in branch_line:
 
184
            (sequence_number,
 
185
                 revid,
 
186
                 merge_depth,
 
187
                 revno_sequence,
 
188
                 end_of_merge) = merge_sorted_revisions[rev_index]
 
189
            
 
190
            linegraph[rev_index][4] = graph_children[revid]
 
191
            col_index = linegraph[rev_index][1][0]
 
192
            
 
193
            for parent_revid in graph_parents[revid]:
 
194
                if parent_revid in revid_index:
 
195
                    
 
196
                    parent_index = revid_index[parent_revid]                            
 
197
                    parent_node = linegraph[parent_index][1]
 
198
                    if parent_node:
 
199
                        parent_col_index = parent_node[0]
 
200
                    else:
 
201
                        parent_col_index = None
 
202
                    col_search_order = \
 
203
                            _line_col_search_order(columns,
 
204
                                                   parent_col_index,
 
205
                                                   col_index)
 
206
                        
 
207
                    # If this line is really long, break it.
 
208
                    if len(branch_id) > 0 and \
 
209
                       BROKEN_LINE_LENGTH and \
 
210
                       parent_index - rev_index > BROKEN_LINE_LENGTH:
 
211
                        child_line_col_index = \
 
212
                            _find_free_column(columns,
 
213
                                              empty_column,
 
214
                                              col_search_order,
 
215
                                              (rev_index + 1,))
 
216
                        _mark_column_as_used(columns,
 
217
                                             child_line_col_index,
 
218
                                             (rev_index + 1,))
 
219
                        
 
220
                        # Recall _line_col_search_order to reset it back to
 
221
                        # the beging.
 
222
                        col_search_order = \
 
223
                                _line_col_search_order(columns,
 
224
                                                       parent_col_index,
 
225
                                                       col_index)
 
226
                        parent_col_line_index = \
 
227
                            _find_free_column(columns,
 
228
                                              empty_column,
 
229
                                              col_search_order,
 
230
                                              (parent_index - 1,))
 
231
                        _mark_column_as_used(columns,
 
232
                                             parent_col_line_index,
 
233
                                             (parent_index - 1,))
 
234
                        lines.append((rev_index,
 
235
                                      parent_index,
 
236
                                      (child_line_col_index,
 
237
                                       parent_col_line_index)))
 
238
                    else :
 
239
                        line_col_index = col_index
 
240
                        if parent_index - rev_index >1:
 
241
                            line_range = range(rev_index + 1, parent_index)
 
242
                            line_col_index = \
 
243
                                _find_free_column(columns,
 
244
                                                  empty_column,
 
245
                                                  col_search_order,
 
246
                                                  line_range)
 
247
                            _mark_column_as_used(columns,
 
248
                                                 line_col_index,
 
249
                                                 line_range)
 
250
                        lines.append((rev_index,
 
251
                                      parent_index,
 
252
                                      (line_col_index,)))
 
253
    
 
254
    for (child_index, parent_index, line_col_indexes) in lines:
 
255
        (child_col_index, child_color) = linegraph[child_index][1]
 
256
        (parent_col_index, parent_color) = linegraph[parent_index][1]
 
257
        
 
258
        if len(line_col_indexes) == 1:
 
259
            if parent_index - child_index == 1:
 
260
                linegraph[child_index][2].append(
 
261
                    (child_col_index,
 
262
                     parent_col_index,
 
263
                     parent_color))
 
264
            else:
 
265
                # line from the child's column to the lines column
 
266
                linegraph[child_index][2].append(
 
267
                    (child_col_index,
 
268
                     line_col_indexes[0],
 
269
                     parent_color))
 
270
                # lines down the line's column
 
271
                for line_part_index in range(child_index+1, parent_index-1):
 
272
                    linegraph[line_part_index][2].append(
 
273
                        (line_col_indexes[0],   
352
274
                         line_col_indexes[0],
353
275
                         parent_color))
354
 
                    # Broken line end
355
 
                    linegraph[child_index+1][2].append(
356
 
                        (line_col_indexes[0],
357
 
                         None,
358
 
                         parent_color))
359
 
 
360
 
                    # Broken line end 
361
 
                    linegraph[parent_index-2][2].append(
362
 
                        (None,
363
 
                         line_col_indexes[1],
364
 
                         parent_color))
365
 
                    # line from the line's column to the parent's column
366
 
                    linegraph[parent_index-1][2].append(
367
 
                        (line_col_indexes[1],
368
 
                         parent_col_index,
369
 
                         parent_color))
370
 
        finally:
371
 
            progress_bar.finished()
372
 
        return (linegraph, revid_index, len(columns))
373
 
    else:
374
 
        return (linegraph, revid_index, 0)
375
 
 
 
276
                # line from the line's column to the parent's column
 
277
                linegraph[parent_index-1][2].append(
 
278
                    (line_col_indexes[0],
 
279
                     parent_col_index,
 
280
                     parent_color))
 
281
        else:
 
282
            # Broken line
 
283
            # line from the child's column to the lines column
 
284
            linegraph[child_index][2].append(
 
285
                (child_col_index,
 
286
                 line_col_indexes[0],
 
287
                 parent_color))
 
288
            # Broken line end
 
289
            linegraph[child_index+1][2].append(
 
290
                (line_col_indexes[0],
 
291
                 None,
 
292
                 parent_color))
 
293
            
 
294
            # Broken line end 
 
295
            linegraph[parent_index-2][2].append(
 
296
                (None,
 
297
                 line_col_indexes[1],
 
298
                 parent_color))
 
299
            # line from the line's column to the parent's column
 
300
            linegraph[parent_index-1][2].append(
 
301
                (line_col_indexes[1],
 
302
                 parent_col_index,
 
303
                 parent_color))
 
304
            
 
305
    
 
306
    return (linegraph, revid_index, len(columns))
376
307
 
377
308
def _branch_line_col_search_order(columns, parent_col_index):
378
309
    for col_index in range(parent_col_index, len(columns)):
418
349
def _mark_column_as_used(columns, col_index, line_range):
419
350
    column = columns[col_index]
420
351
    for row_index in line_range:
421
 
        column[row_index] = True
 
352
        column[row_index] = True    
422
353
 
423
354
def same_branch(a, b):
424
355
    """Return whether we think revisions a and b are on the same branch."""