47
47
def transform_tree(from_tree, to_tree, interesting_ids=None):
48
48
from_tree.lock_tree_write()
50
merge_inner(from_tree.branch, to_tree, from_tree, ignore_zero=True,
51
interesting_ids=interesting_ids, this_tree=from_tree)
49
operation = OperationWithCleanups(merge_inner)
50
operation.add_cleanup(from_tree.unlock)
51
operation.run_simple(from_tree.branch, to_tree, from_tree,
52
ignore_zero=True, interesting_ids=interesting_ids, this_tree=from_tree)
56
55
class MergeHooks(hooks.Hooks):
94
93
return ('not applicable', None)
97
class ConfigurableFileMerger(AbstractPerFileMerger):
96
class PerFileMerger(AbstractPerFileMerger):
97
"""Merge individual files when self.file_matches returns True.
99
This class is intended to be subclassed. The file_matches and
100
merge_matching methods should be overridden with concrete implementations.
103
def file_matches(self, params):
104
"""Return True if merge_matching should be called on this file.
106
Only called with merges of plain files with no clear winner.
108
Subclasses must override this.
110
raise NotImplementedError(self.file_matches)
112
def get_filename(self, params, tree):
113
"""Lookup the filename (i.e. basename, not path), given a Tree (e.g.
114
self.merger.this_tree) and a MergeHookParams.
116
return osutils.basename(tree.id2path(params.file_id))
118
def get_filepath(self, params, tree):
119
"""Calculate the path to the file in a tree.
121
:param params: A MergeHookParams describing the file to merge
122
:param tree: a Tree, e.g. self.merger.this_tree.
124
return tree.id2path(params.file_id)
126
def merge_contents(self, params):
127
"""Merge the contents of a single file."""
128
# Check whether this custom merge logic should be used.
130
# OTHER is a straight winner, rely on default merge.
131
params.winner == 'other' or
132
# THIS and OTHER aren't both files.
133
not params.is_file_merge() or
134
# The filename doesn't match *.xml
135
not self.file_matches(params)):
136
return 'not_applicable', None
137
return self.merge_matching(params)
139
def merge_matching(self, params):
140
"""Merge the contents of a single file that has matched the criteria
141
in PerFileMerger.merge_contents (is a conflict, is a file,
142
self.file_matches is True).
144
Subclasses must override this.
146
raise NotImplementedError(self.merge_matching)
149
class ConfigurableFileMerger(PerFileMerger):
98
150
"""Merge individual files when configured via a .conf file.
100
152
This is a base class for concrete custom file merging logic. Concrete
123
175
if self.name_prefix is None:
124
176
raise ValueError("name_prefix must be set.")
126
def filename_matches_config(self, params):
178
def file_matches(self, params):
127
179
"""Check whether the file should call the merge hook.
129
181
<name_prefix>_merge_files configuration variable is a list of files
132
184
affected_files = self.affected_files
133
185
if affected_files is None:
134
config = self.merger.this_tree.branch.get_config()
186
config = self.merger.this_branch.get_config()
135
187
# Until bzr provides a better policy for caching the config, we
136
188
# just add the part we're interested in to the params to avoid
137
189
# reading the config files repeatedly (bazaar.conf, location.conf,
143
195
affected_files = self.default_files
144
196
self.affected_files = affected_files
145
197
if affected_files:
146
filename = self.merger.this_tree.id2path(params.file_id)
147
if filename in affected_files:
198
filepath = self.get_filepath(params, self.merger.this_tree)
199
if filepath in affected_files:
151
def merge_contents(self, params):
152
"""Merge the contents of a single file."""
153
# First, check whether this custom merge logic should be used. We
154
# expect most files should not be merged by this handler.
156
# OTHER is a straight winner, rely on default merge.
157
params.winner == 'other' or
158
# THIS and OTHER aren't both files.
159
not params.is_file_merge() or
160
# The filename isn't listed in the 'NAME_merge_files' config
162
not self.filename_matches_config(params)):
163
return 'not_applicable', None
203
def merge_matching(self, params):
164
204
return self.merge_text(params)
166
206
def merge_text(self, params):
506
operation.add_cleanup(tree.unlock)
465
507
new_parent_trees.append((revision_id, tree))
467
self.this_tree.set_parent_trees(new_parent_trees,
468
allow_leftmost_as_ghost=True)
470
for _revision_id, tree in new_parent_trees:
508
operation.run_simple(new_parent_trees, allow_leftmost_as_ghost=True)
474
510
def set_other(self, other_revision, possible_transports=None):
475
511
"""Set the revision and tree to merge from.
646
683
sub_tree.branch.repository.revision_tree(base_revision)
647
684
sub_merge.base_rev_id = base_revision
648
685
sub_merge.do_merge()
650
688
def do_merge(self):
689
operation = OperationWithCleanups(self._do_merge_to)
651
690
self.this_tree.lock_tree_write()
653
if self.base_tree is not None:
654
self.base_tree.lock_read()
656
if self.other_tree is not None:
657
self.other_tree.lock_read()
659
merge = self.make_merger()
660
self._do_merge_to(merge)
662
if self.other_tree is not None:
663
self.other_tree.unlock()
665
if self.base_tree is not None:
666
self.base_tree.unlock()
668
self.this_tree.unlock()
691
operation.add_cleanup(self.this_tree.unlock)
692
if self.base_tree is not None:
693
self.base_tree.lock_read()
694
operation.add_cleanup(self.base_tree.unlock)
695
if self.other_tree is not None:
696
self.other_tree.lock_read()
697
operation.add_cleanup(self.other_tree.unlock)
698
merge = operation.run_simple()
669
699
if len(merge.cooked_conflicts) == 0:
670
700
if not self.ignore_zero and not trace.is_quiet():
671
701
trace.note("All changes applied successfully.")
715
745
:param this_tree: The local tree in the merge operation
716
746
:param base_tree: The common tree in the merge operation
717
747
:param other_tree: The other tree to merge changes from
718
:param this_branch: The branch associated with this_tree
748
:param this_branch: The branch associated with this_tree. Defaults to
749
this_tree.branch if not supplied.
719
750
:param interesting_ids: The file_ids of files that should be
720
751
participate in the merge. May not be combined with
721
752
interesting_files.
765
798
warnings.warn("pb argument to Merge3Merger is deprecated")
767
800
def do_merge(self):
801
operation = OperationWithCleanups(self._do_merge)
768
802
self.this_tree.lock_tree_write()
803
operation.add_cleanup(self.this_tree.unlock)
769
804
self.base_tree.lock_read()
805
operation.add_cleanup(self.base_tree.unlock)
770
806
self.other_tree.lock_read()
807
operation.add_cleanup(self.other_tree.unlock)
810
def _do_merge(self, operation):
811
self.tt = transform.TreeTransform(self.this_tree, None)
812
operation.add_cleanup(self.tt.finalize)
813
self._compute_transform()
814
results = self.tt.apply(no_conflicts=True)
815
self.write_modified(results)
772
self.tt = transform.TreeTransform(self.this_tree, None)
774
self._compute_transform()
775
results = self.tt.apply(no_conflicts=True)
776
self.write_modified(results)
778
self.this_tree.add_conflicts(self.cooked_conflicts)
779
except errors.UnsupportedOperation:
784
self.other_tree.unlock()
785
self.base_tree.unlock()
786
self.this_tree.unlock()
817
self.this_tree.add_conflicts(self.cooked_conflicts)
818
except errors.UnsupportedOperation:
788
821
def make_preview_transform(self):
822
operation = OperationWithCleanups(self._make_preview_transform)
789
823
self.base_tree.lock_read()
824
operation.add_cleanup(self.base_tree.unlock)
790
825
self.other_tree.lock_read()
826
operation.add_cleanup(self.other_tree.unlock)
827
return operation.run_simple()
829
def _make_preview_transform(self):
791
830
self.tt = transform.TransformPreview(self.this_tree)
793
self._compute_transform()
795
self.other_tree.unlock()
796
self.base_tree.unlock()
831
self._compute_transform()
799
834
def _compute_transform(self):
1052
1086
other_root = self.tt.trans_id_file_id(other_root_file_id)
1053
1087
if other_root == self.tt.root:
1089
if self.other_tree.inventory.root.file_id in self.this_tree.inventory:
1090
# the other tree's root is a non-root in the current tree (as when
1091
# a previously unrelated branch is merged into another)
1056
1094
self.tt.final_kind(other_root)
1095
other_root_is_present = True
1057
1096
except errors.NoSuchFile:
1059
if self.this_tree.has_id(self.other_tree.inventory.root.file_id):
1060
# the other tree's root is a non-root in the current tree
1062
self.reparent_children(self.other_tree.inventory.root, self.tt.root)
1063
self.tt.cancel_creation(other_root)
1064
self.tt.cancel_versioning(other_root)
1066
def reparent_children(self, ie, target):
1067
for thing, child in ie.children.iteritems():
1097
# other_root doesn't have a physical representation. We still need
1098
# to move any references to the actual root of the tree.
1099
other_root_is_present = False
1100
# 'other_tree.inventory.root' is not present in this tree. We are
1101
# calling adjust_path for children which *want* to be present with a
1102
# correct place to go.
1103
for thing, child in self.other_tree.inventory.root.children.iteritems():
1068
1104
trans_id = self.tt.trans_id_file_id(child.file_id)
1069
self.tt.adjust_path(self.tt.final_name(trans_id), target, trans_id)
1105
if not other_root_is_present:
1106
# FIXME: Make final_kind returns None instead of raising
1107
# NoSuchFile to avoid the ugly construct below -- vila 20100402
1109
self.tt.final_kind(trans_id)
1110
# The item exist in the final tree and has a defined place
1113
except errors.NoSuchFile, e:
1115
# Move the item into the root
1116
self.tt.adjust_path(self.tt.final_name(trans_id),
1117
self.tt.root, trans_id)
1118
if other_root_is_present:
1119
self.tt.cancel_creation(other_root)
1120
self.tt.cancel_versioning(other_root)
1071
1122
def write_modified(self, results):
1072
1123
modified_hashes = {}
1121
1172
def _three_way(base, other, this):
1122
#if base == other, either they all agree, or only THIS has changed.
1123
1173
if base == other:
1174
# if 'base == other', either they all agree, or only 'this' has
1125
1177
elif this not in (base, other):
1178
# 'this' is neither 'base' nor 'other', so both sides changed
1126
1179
return 'conflict'
1127
# "Ambiguous clean merge" -- both sides have made the same change.
1128
1180
elif this == other:
1181
# "Ambiguous clean merge" -- both sides have made the same change.
1130
# this == base: only other has changed.
1184
# this == base: only other has changed.
1178
1231
# only has an lca value
1181
# At this point, the lcas disagree, and the tips disagree
1234
# At this point, the lcas disagree, and the tip disagree
1182
1235
return 'conflict'
1238
@deprecated_method(deprecated_in((2, 2, 0)))
1185
1239
def scalar_three_way(this_tree, base_tree, other_tree, file_id, key):
1186
1240
"""Do a three-way test on a scalar.
1187
1241
Return "this", "other" or "conflict", depending whether a value wins.
1237
1291
parent_id_winner = "other"
1238
1292
if name_winner == "this" and parent_id_winner == "this":
1240
if name_winner == "conflict":
1241
trans_id = self.tt.trans_id_file_id(file_id)
1242
self._raw_conflicts.append(('name conflict', trans_id,
1243
this_name, other_name))
1244
if parent_id_winner == "conflict":
1245
trans_id = self.tt.trans_id_file_id(file_id)
1246
self._raw_conflicts.append(('parent conflict', trans_id,
1247
this_parent, other_parent))
1294
if name_winner == 'conflict' or parent_id_winner == 'conflict':
1295
# Creating helpers (.OTHER or .THIS) here cause problems down the
1296
# road if a ContentConflict needs to be created so we should not do
1298
trans_id = self.tt.trans_id_file_id(file_id)
1299
self._raw_conflicts.append(('path conflict', trans_id, file_id,
1300
this_parent, this_name,
1301
other_parent, other_name))
1248
1302
if other_name is None:
1249
1303
# it doesn't matter whether the result was 'other' or
1250
1304
# 'conflict'-- if there's no 'other', we leave it alone.
1252
# if we get here, name_winner and parent_winner are set to safe values.
1253
trans_id = self.tt.trans_id_file_id(file_id)
1254
1306
parent_id = parents[self.winner_idx[parent_id_winner]]
1255
1307
if parent_id is not None:
1256
parent_trans_id = self.tt.trans_id_file_id(parent_id)
1308
# if we get here, name_winner and parent_winner are set to safe
1257
1310
self.tt.adjust_path(names[self.winner_idx[name_winner]],
1258
parent_trans_id, trans_id)
1311
self.tt.trans_id_file_id(parent_id),
1312
self.tt.trans_id_file_id(file_id))
1260
1314
def _do_merge_contents(self, file_id):
1261
1315
"""Performs a merge on file_id contents."""
1541
1595
def cook_conflicts(self, fs_conflicts):
1542
1596
"""Convert all conflicts into a form that doesn't depend on trans_id"""
1544
1597
self.cooked_conflicts.extend(transform.cook_conflicts(
1545
1598
fs_conflicts, self.tt))
1546
1599
fp = transform.FinalPaths(self.tt)
1547
1600
for conflict in self._raw_conflicts:
1548
1601
conflict_type = conflict[0]
1549
if conflict_type in ('name conflict', 'parent conflict'):
1550
trans_id = conflict[1]
1551
conflict_args = conflict[2:]
1552
if trans_id not in name_conflicts:
1553
name_conflicts[trans_id] = {}
1554
transform.unique_add(name_conflicts[trans_id], conflict_type,
1556
if conflict_type == 'contents conflict':
1602
if conflict_type == 'path conflict':
1604
this_parent, this_name,
1605
other_parent, other_name) = conflict[1:]
1606
if this_parent is None or this_name is None:
1607
this_path = '<deleted>'
1609
parent_path = fp.get_path(
1610
self.tt.trans_id_file_id(this_parent))
1611
this_path = osutils.pathjoin(parent_path, this_name)
1612
if other_parent is None or other_name is None:
1613
other_path = '<deleted>'
1615
parent_path = fp.get_path(
1616
self.tt.trans_id_file_id(other_parent))
1617
other_path = osutils.pathjoin(parent_path, other_name)
1618
c = _mod_conflicts.Conflict.factory(
1619
'path conflict', path=this_path,
1620
conflict_path=other_path,
1622
elif conflict_type == 'contents conflict':
1557
1623
for trans_id in conflict[1]:
1558
1624
file_id = self.tt.final_file_id(trans_id)
1559
1625
if file_id is not None:
1566
1632
c = _mod_conflicts.Conflict.factory(conflict_type,
1567
1633
path=path, file_id=file_id)
1568
self.cooked_conflicts.append(c)
1569
if conflict_type == 'text conflict':
1634
elif conflict_type == 'text conflict':
1570
1635
trans_id = conflict[1]
1571
1636
path = fp.get_path(trans_id)
1572
1637
file_id = self.tt.final_file_id(trans_id)
1573
1638
c = _mod_conflicts.Conflict.factory(conflict_type,
1574
1639
path=path, file_id=file_id)
1575
self.cooked_conflicts.append(c)
1577
for trans_id, conflicts in name_conflicts.iteritems():
1579
this_parent, other_parent = conflicts['parent conflict']
1580
if this_parent == other_parent:
1581
raise AssertionError()
1583
this_parent = other_parent = \
1584
self.tt.final_file_id(self.tt.final_parent(trans_id))
1586
this_name, other_name = conflicts['name conflict']
1587
if this_name == other_name:
1588
raise AssertionError()
1590
this_name = other_name = self.tt.final_name(trans_id)
1591
other_path = fp.get_path(trans_id)
1592
if this_parent is not None and this_name is not None:
1593
this_parent_path = \
1594
fp.get_path(self.tt.trans_id_file_id(this_parent))
1595
this_path = osutils.pathjoin(this_parent_path, this_name)
1597
this_path = "<deleted>"
1598
file_id = self.tt.final_file_id(trans_id)
1599
c = _mod_conflicts.Conflict.factory('path conflict', path=this_path,
1600
conflict_path=other_path,
1641
raise AssertionError('bad conflict type: %r' % (conflict,))
1602
1642
self.cooked_conflicts.append(c)
1603
1643
self.cooked_conflicts.sort(key=_mod_conflicts.Conflict.sort_key)
added
removed
bzrlib/merge.py
