54
46
def transform_tree(from_tree, to_tree, interesting_ids=None):
55
47
from_tree.lock_tree_write()
56
operation = cleanup.OperationWithCleanups(merge_inner)
57
operation.add_cleanup(from_tree.unlock)
58
operation.run_simple(from_tree.branch, to_tree, from_tree,
59
ignore_zero=True, interesting_ids=interesting_ids, this_tree=from_tree)
49
merge_inner(from_tree.branch, to_tree, from_tree, ignore_zero=True,
50
interesting_ids=interesting_ids, this_tree=from_tree)
62
55
class MergeHooks(hooks.Hooks):
64
57
def __init__(self):
65
hooks.Hooks.__init__(self, "bzrlib.merge", "Merger.hooks")
66
self.add_hook('merge_file_content',
67
"Called with a bzrlib.merge.Merger object to create a per file "
68
"merge object when starting a merge. "
69
"Should return either None or a subclass of "
70
"``bzrlib.merge.AbstractPerFileMerger``. "
71
"Such objects will then be called per file "
72
"that needs to be merged (including when one "
73
"side has deleted the file and the other has changed it). "
74
"See the AbstractPerFileMerger API docs for details on how it is "
79
class AbstractPerFileMerger(object):
80
"""PerFileMerger objects are used by plugins extending merge for bzrlib.
82
See ``bzrlib.plugins.news_merge.news_merge`` for an example concrete class.
84
:ivar merger: The Merge3Merger performing the merge.
87
def __init__(self, merger):
88
"""Create a PerFileMerger for use with merger."""
91
def merge_contents(self, merge_params):
92
"""Attempt to merge the contents of a single file.
94
:param merge_params: A bzrlib.merge.MergeHookParams
95
:return: A tuple of (status, chunks), where status is one of
96
'not_applicable', 'success', 'conflicted', or 'delete'. If status
97
is 'success' or 'conflicted', then chunks should be an iterable of
98
strings for the new file contents.
100
return ('not applicable', None)
103
class PerFileMerger(AbstractPerFileMerger):
104
"""Merge individual files when self.file_matches returns True.
106
This class is intended to be subclassed. The file_matches and
107
merge_matching methods should be overridden with concrete implementations.
110
def file_matches(self, params):
111
"""Return True if merge_matching should be called on this file.
113
Only called with merges of plain files with no clear winner.
115
Subclasses must override this.
117
raise NotImplementedError(self.file_matches)
119
def get_filename(self, params, tree):
120
"""Lookup the filename (i.e. basename, not path), given a Tree (e.g.
121
self.merger.this_tree) and a MergeHookParams.
123
return osutils.basename(tree.id2path(params.file_id))
125
def get_filepath(self, params, tree):
126
"""Calculate the path to the file in a tree.
128
:param params: A MergeHookParams describing the file to merge
129
:param tree: a Tree, e.g. self.merger.this_tree.
131
return tree.id2path(params.file_id)
133
def merge_contents(self, params):
134
"""Merge the contents of a single file."""
135
# Check whether this custom merge logic should be used.
137
# OTHER is a straight winner, rely on default merge.
138
params.winner == 'other' or
139
# THIS and OTHER aren't both files.
140
not params.is_file_merge() or
141
# The filename doesn't match *.xml
142
not self.file_matches(params)):
143
return 'not_applicable', None
144
return self.merge_matching(params)
146
def merge_matching(self, params):
147
"""Merge the contents of a single file that has matched the criteria
148
in PerFileMerger.merge_contents (is a conflict, is a file,
149
self.file_matches is True).
151
Subclasses must override this.
153
raise NotImplementedError(self.merge_matching)
156
class ConfigurableFileMerger(PerFileMerger):
157
"""Merge individual files when configured via a .conf file.
159
This is a base class for concrete custom file merging logic. Concrete
160
classes should implement ``merge_text``.
162
See ``bzrlib.plugins.news_merge.news_merge`` for an example concrete class.
164
:ivar affected_files: The configured file paths to merge.
166
:cvar name_prefix: The prefix to use when looking up configuration
167
details. <name_prefix>_merge_files describes the files targeted by the
170
:cvar default_files: The default file paths to merge when no configuration
177
def __init__(self, merger):
178
super(ConfigurableFileMerger, self).__init__(merger)
179
self.affected_files = None
180
self.default_files = self.__class__.default_files or []
181
self.name_prefix = self.__class__.name_prefix
182
if self.name_prefix is None:
183
raise ValueError("name_prefix must be set.")
185
def file_matches(self, params):
186
"""Check whether the file should call the merge hook.
188
<name_prefix>_merge_files configuration variable is a list of files
189
that should use the hook.
191
affected_files = self.affected_files
192
if affected_files is None:
193
config = self.merger.this_branch.get_config()
194
# Until bzr provides a better policy for caching the config, we
195
# just add the part we're interested in to the params to avoid
196
# reading the config files repeatedly (bazaar.conf, location.conf,
198
config_key = self.name_prefix + '_merge_files'
199
affected_files = config.get_user_option_as_list(config_key)
200
if affected_files is None:
201
# If nothing was specified in the config, use the default.
202
affected_files = self.default_files
203
self.affected_files = affected_files
205
filepath = self.get_filepath(params, self.merger.this_tree)
206
if filepath in affected_files:
210
def merge_matching(self, params):
211
return self.merge_text(params)
213
def merge_text(self, params):
214
"""Merge the byte contents of a single file.
216
This is called after checking that the merge should be performed in
217
merge_contents, and it should behave as per
218
``bzrlib.merge.AbstractPerFileMerger.merge_contents``.
220
raise NotImplementedError(self.merge_text)
58
hooks.Hooks.__init__(self)
59
self.create_hook(hooks.HookPoint('merge_file_content',
60
"Called when file content needs to be merged (including when one "
61
"side has deleted the file and the other has changed it)."
62
"merge_file_content is called with a "
63
"bzrlib.merge.MergeHookParams. The function should return a tuple "
64
"of (status, lines), where status is one of 'not_applicable', "
65
"'success', 'conflicted', or 'delete'. If status is success or "
66
"conflicted, then lines should be an iterable of strings of the "
223
71
class MergeHookParams(object):
224
72
"""Object holding parameters passed to merge_file_content hooks.
226
There are some fields hooks can access:
74
There are 3 fields hooks can access:
76
:ivar merger: the Merger object
228
77
:ivar file_id: the file ID of the file being merged
229
78
:ivar trans_id: the transform ID for the merge of this file
230
79
:ivar this_kind: kind of file_id in 'this' tree
592
448
self.base_rev_id = self.revision_graph.find_unique_lca(
594
sorted_lca_keys = self.revision_graph.find_merge_order(
596
if self.base_rev_id == _mod_revision.NULL_REVISION:
597
self.base_rev_id = sorted_lca_keys[0]
450
self._is_criss_cross = True
599
451
if self.base_rev_id == _mod_revision.NULL_REVISION:
600
452
raise errors.UnrelatedBranches()
601
453
if self._is_criss_cross:
602
454
trace.warning('Warning: criss-cross merge encountered. See bzr'
603
455
' help criss-cross.')
604
456
trace.mutter('Criss-cross lcas: %r' % lcas)
605
if self.base_rev_id in lcas:
606
trace.mutter('Unable to find unique lca. '
607
'Fallback %r as best option.' % self.base_rev_id)
608
interesting_revision_ids = set(lcas)
609
interesting_revision_ids.add(self.base_rev_id)
457
interesting_revision_ids = [self.base_rev_id]
458
interesting_revision_ids.extend(lcas)
610
459
interesting_trees = dict((t.get_revision_id(), t)
611
460
for t in self.this_branch.repository.revision_trees(
612
461
interesting_revision_ids))
613
462
self._cached_trees.update(interesting_trees)
614
if self.base_rev_id in lcas:
615
self.base_tree = interesting_trees[self.base_rev_id]
617
self.base_tree = interesting_trees.pop(self.base_rev_id)
463
self.base_tree = interesting_trees.pop(self.base_rev_id)
464
sorted_lca_keys = self.revision_graph.find_merge_order(
618
466
self._lca_trees = [interesting_trees[key]
619
467
for key in sorted_lca_keys]
801
652
# making sure we haven't missed any corner cases.
802
653
# if lca_trees is None:
803
654
# self._lca_trees = [self.base_tree]
804
657
self.change_reporter = change_reporter
805
658
self.cherrypick = cherrypick
660
self.pp = progress.ProgressPhase("Merge phase", 3, self.pb)
809
warnings.warn("pp argument to Merge3Merger is deprecated")
811
warnings.warn("pb argument to Merge3Merger is deprecated")
813
664
def do_merge(self):
814
operation = cleanup.OperationWithCleanups(self._do_merge)
815
665
self.this_tree.lock_tree_write()
816
operation.add_cleanup(self.this_tree.unlock)
817
666
self.base_tree.lock_read()
818
operation.add_cleanup(self.base_tree.unlock)
819
667
self.other_tree.lock_read()
820
operation.add_cleanup(self.other_tree.unlock)
823
def _do_merge(self, operation):
824
self.tt = transform.TreeTransform(self.this_tree, None)
825
operation.add_cleanup(self.tt.finalize)
826
self._compute_transform()
827
results = self.tt.apply(no_conflicts=True)
828
self.write_modified(results)
830
self.this_tree.add_conflicts(self.cooked_conflicts)
831
except errors.UnsupportedOperation:
669
self.tt = transform.TreeTransform(self.this_tree, self.pb)
672
self._compute_transform()
674
results = self.tt.apply(no_conflicts=True)
675
self.write_modified(results)
677
self.this_tree.add_conflicts(self.cooked_conflicts)
678
except errors.UnsupportedOperation:
683
self.other_tree.unlock()
684
self.base_tree.unlock()
685
self.this_tree.unlock()
834
688
def make_preview_transform(self):
835
operation = cleanup.OperationWithCleanups(self._make_preview_transform)
836
689
self.base_tree.lock_read()
837
operation.add_cleanup(self.base_tree.unlock)
838
690
self.other_tree.lock_read()
839
operation.add_cleanup(self.other_tree.unlock)
840
return operation.run_simple()
842
def _make_preview_transform(self):
843
691
self.tt = transform.TransformPreview(self.this_tree)
844
self._compute_transform()
694
self._compute_transform()
697
self.other_tree.unlock()
698
self.base_tree.unlock()
847
702
def _compute_transform(self):
853
708
resolver = self._lca_multi_way
854
709
child_pb = ui.ui_factory.nested_progress_bar()
856
factories = Merger.hooks['merge_file_content']
857
hooks = [factory(self) for factory in factories] + [self]
858
self.active_hooks = [hook for hook in hooks if hook is not None]
859
711
for num, (file_id, changed, parents3, names3,
860
712
executable3) in enumerate(entries):
861
713
child_pb.update('Preparing file merge', num, len(entries))
862
714
self._merge_names(file_id, parents3, names3, resolver=resolver)
864
file_status = self._do_merge_contents(file_id)
716
file_status = self.merge_contents(file_id)
866
718
file_status = 'unmodified'
867
719
self._merge_executable(file_id,
868
720
executable3, file_status, resolver=resolver)
870
722
child_pb.finished()
871
self.tt.fixup_new_roots()
872
self._finish_computing_transform()
874
def _finish_computing_transform(self):
875
"""Finalize the transform and report the changes.
877
This is the second half of _compute_transform.
879
725
child_pb = ui.ui_factory.nested_progress_bar()
881
727
fs_conflicts = transform.resolve_conflicts(self.tt, child_pb,
933
779
it then compares with THIS and BASE.
935
781
For the multi-valued entries, the format will be (BASE, [lca1, lca2])
937
:return: [(file_id, changed, parents, names, executable)], where:
939
* file_id: Simple file_id of the entry
940
* changed: Boolean, True if the kind or contents changed else False
941
* parents: ((base, [parent_id, in, lcas]), parent_id_other,
943
* names: ((base, [name, in, lcas]), name_in_other, name_in_this)
944
* executable: ((base, [exec, in, lcas]), exec_in_other,
782
:return: [(file_id, changed, parents, names, executable)]
783
file_id Simple file_id of the entry
784
changed Boolean, True if the kind or contents changed
786
parents ((base, [parent_id, in, lcas]), parent_id_other,
788
names ((base, [name, in, lcas]), name_in_other, name_in_this)
789
executable ((base, [exec, in, lcas]), exec_in_other, exec_in_this)
947
791
if self.interesting_files is not None:
948
792
lookup_trees = [self.this_tree, self.base_tree]
1106
953
other_root = self.tt.trans_id_file_id(other_root_file_id)
1107
954
if other_root == self.tt.root:
1109
if self.this_tree.inventory.has_id(
1110
self.other_tree.inventory.root.file_id):
1111
# the other tree's root is a non-root in the current tree (as
1112
# when a previously unrelated branch is merged into another)
1114
if self.tt.final_kind(other_root) is not None:
1115
other_root_is_present = True
1117
# other_root doesn't have a physical representation. We still need
1118
# to move any references to the actual root of the tree.
1119
other_root_is_present = False
1120
# 'other_tree.inventory.root' is not present in this tree. We are
1121
# calling adjust_path for children which *want* to be present with a
1122
# correct place to go.
1123
for _, child in self.other_tree.inventory.root.children.iteritems():
957
self.tt.final_kind(other_root)
958
except errors.NoSuchFile:
960
if self.this_tree.has_id(self.other_tree.inventory.root.file_id):
961
# the other tree's root is a non-root in the current tree
963
self.reparent_children(self.other_tree.inventory.root, self.tt.root)
964
self.tt.cancel_creation(other_root)
965
self.tt.cancel_versioning(other_root)
967
def reparent_children(self, ie, target):
968
for thing, child in ie.children.iteritems():
1124
969
trans_id = self.tt.trans_id_file_id(child.file_id)
1125
if not other_root_is_present:
1126
if self.tt.final_kind(trans_id) is not None:
1127
# The item exist in the final tree and has a defined place
1130
# Move the item into the root
1132
final_name = self.tt.final_name(trans_id)
1133
except errors.NoFinalPath:
1134
# This file is not present anymore, ignore it.
1136
self.tt.adjust_path(final_name, self.tt.root, trans_id)
1137
if other_root_is_present:
1138
self.tt.cancel_creation(other_root)
1139
self.tt.cancel_versioning(other_root)
970
self.tt.adjust_path(self.tt.final_name(trans_id), target, trans_id)
1141
972
def write_modified(self, results):
1142
973
modified_hashes = {}
1310
1138
parent_id_winner = "other"
1311
1139
if name_winner == "this" and parent_id_winner == "this":
1313
if name_winner == 'conflict' or parent_id_winner == 'conflict':
1314
# Creating helpers (.OTHER or .THIS) here cause problems down the
1315
# road if a ContentConflict needs to be created so we should not do
1317
trans_id = self.tt.trans_id_file_id(file_id)
1318
self._raw_conflicts.append(('path conflict', trans_id, file_id,
1319
this_parent, this_name,
1320
other_parent, other_name))
1321
if not self.other_tree.has_id(file_id):
1141
if name_winner == "conflict":
1142
trans_id = self.tt.trans_id_file_id(file_id)
1143
self._raw_conflicts.append(('name conflict', trans_id,
1144
this_name, other_name))
1145
if parent_id_winner == "conflict":
1146
trans_id = self.tt.trans_id_file_id(file_id)
1147
self._raw_conflicts.append(('parent conflict', trans_id,
1148
this_parent, other_parent))
1149
if other_name is None:
1322
1150
# it doesn't matter whether the result was 'other' or
1323
# 'conflict'-- if it has no file id, we leave it alone.
1151
# 'conflict'-- if there's no 'other', we leave it alone.
1153
# if we get here, name_winner and parent_winner are set to safe values.
1154
trans_id = self.tt.trans_id_file_id(file_id)
1325
1155
parent_id = parents[self.winner_idx[parent_id_winner]]
1326
name = names[self.winner_idx[name_winner]]
1327
if parent_id is not None or name is not None:
1328
# if we get here, name_winner and parent_winner are set to safe
1330
if parent_id is None and name is not None:
1331
# if parent_id is None and name is non-None, current file is
1333
if names[self.winner_idx[parent_id_winner]] != '':
1334
raise AssertionError(
1335
'File looks like a root, but named %s' %
1336
names[self.winner_idx[parent_id_winner]])
1337
parent_trans_id = transform.ROOT_PARENT
1339
parent_trans_id = self.tt.trans_id_file_id(parent_id)
1340
self.tt.adjust_path(name, parent_trans_id,
1341
self.tt.trans_id_file_id(file_id))
1156
if parent_id is not None:
1157
parent_trans_id = self.tt.trans_id_file_id(parent_id)
1158
self.tt.adjust_path(names[self.winner_idx[name_winner]],
1159
parent_trans_id, trans_id)
1343
def _do_merge_contents(self, file_id):
1161
def merge_contents(self, file_id):
1344
1162
"""Performs a merge on file_id contents."""
1345
1163
def contents_pair(tree):
1346
if not tree.has_id(file_id):
1164
if file_id not in tree:
1347
1165
return (None, None)
1348
1166
kind = tree.kind(file_id)
1349
1167
if kind == "file":
1618
1439
def cook_conflicts(self, fs_conflicts):
1619
1440
"""Convert all conflicts into a form that doesn't depend on trans_id"""
1620
content_conflict_file_ids = set()
1621
cooked_conflicts = transform.cook_conflicts(fs_conflicts, self.tt)
1442
self.cooked_conflicts.extend(transform.cook_conflicts(
1443
fs_conflicts, self.tt))
1622
1444
fp = transform.FinalPaths(self.tt)
1623
1445
for conflict in self._raw_conflicts:
1624
1446
conflict_type = conflict[0]
1625
if conflict_type == 'path conflict':
1627
this_parent, this_name,
1628
other_parent, other_name) = conflict[1:]
1629
if this_parent is None or this_name is None:
1630
this_path = '<deleted>'
1632
parent_path = fp.get_path(
1633
self.tt.trans_id_file_id(this_parent))
1634
this_path = osutils.pathjoin(parent_path, this_name)
1635
if other_parent is None or other_name is None:
1636
other_path = '<deleted>'
1638
if other_parent == self.other_tree.get_root_id():
1639
# The tree transform doesn't know about the other root,
1640
# so we special case here to avoid a NoFinalPath
1644
parent_path = fp.get_path(
1645
self.tt.trans_id_file_id(other_parent))
1646
other_path = osutils.pathjoin(parent_path, other_name)
1647
c = _mod_conflicts.Conflict.factory(
1648
'path conflict', path=this_path,
1649
conflict_path=other_path,
1651
elif conflict_type == 'contents conflict':
1447
if conflict_type in ('name conflict', 'parent conflict'):
1448
trans_id = conflict[1]
1449
conflict_args = conflict[2:]
1450
if trans_id not in name_conflicts:
1451
name_conflicts[trans_id] = {}
1452
transform.unique_add(name_conflicts[trans_id], conflict_type,
1454
if conflict_type == 'contents conflict':
1652
1455
for trans_id in conflict[1]:
1653
1456
file_id = self.tt.final_file_id(trans_id)
1654
1457
if file_id is not None:
1661
1464
c = _mod_conflicts.Conflict.factory(conflict_type,
1662
1465
path=path, file_id=file_id)
1663
content_conflict_file_ids.add(file_id)
1664
elif conflict_type == 'text conflict':
1466
self.cooked_conflicts.append(c)
1467
if conflict_type == 'text conflict':
1665
1468
trans_id = conflict[1]
1666
1469
path = fp.get_path(trans_id)
1667
1470
file_id = self.tt.final_file_id(trans_id)
1668
1471
c = _mod_conflicts.Conflict.factory(conflict_type,
1669
1472
path=path, file_id=file_id)
1473
self.cooked_conflicts.append(c)
1475
for trans_id, conflicts in name_conflicts.iteritems():
1477
this_parent, other_parent = conflicts['parent conflict']
1478
if this_parent == other_parent:
1479
raise AssertionError()
1481
this_parent = other_parent = \
1482
self.tt.final_file_id(self.tt.final_parent(trans_id))
1484
this_name, other_name = conflicts['name conflict']
1485
if this_name == other_name:
1486
raise AssertionError()
1488
this_name = other_name = self.tt.final_name(trans_id)
1489
other_path = fp.get_path(trans_id)
1490
if this_parent is not None and this_name is not None:
1491
this_parent_path = \
1492
fp.get_path(self.tt.trans_id_file_id(this_parent))
1493
this_path = osutils.pathjoin(this_parent_path, this_name)
1671
raise AssertionError('bad conflict type: %r' % (conflict,))
1672
cooked_conflicts.append(c)
1674
self.cooked_conflicts = []
1675
# We want to get rid of path conflicts when a corresponding contents
1676
# conflict exists. This can occur when one branch deletes a file while
1677
# the other renames *and* modifies it. In this case, the content
1678
# conflict is enough.
1679
for c in cooked_conflicts:
1680
if (c.typestring == 'path conflict'
1681
and c.file_id in content_conflict_file_ids):
1495
this_path = "<deleted>"
1496
file_id = self.tt.final_file_id(trans_id)
1497
c = _mod_conflicts.Conflict.factory('path conflict', path=this_path,
1498
conflict_path=other_path,
1683
1500
self.cooked_conflicts.append(c)
1684
1501
self.cooked_conflicts.sort(key=_mod_conflicts.Conflict.sort_key)
1791
1608
osutils.rmtree(temp_dir)
1794
class PathNotInTree(errors.BzrError):
1796
_fmt = """Merge-into failed because %(tree)s does not contain %(path)s."""
1798
def __init__(self, path, tree):
1799
errors.BzrError.__init__(self, path=path, tree=tree)
1802
class MergeIntoMerger(Merger):
1803
"""Merger that understands other_tree will be merged into a subdir.
1805
This also changes the Merger api so that it uses real Branch, revision_id,
1806
and RevisonTree objects, rather than using revision specs.
1809
def __init__(self, this_tree, other_branch, other_tree, target_subdir,
1810
source_subpath, other_rev_id=None):
1811
"""Create a new MergeIntoMerger object.
1813
source_subpath in other_tree will be effectively copied to
1814
target_subdir in this_tree.
1816
:param this_tree: The tree that we will be merging into.
1817
:param other_branch: The Branch we will be merging from.
1818
:param other_tree: The RevisionTree object we want to merge.
1819
:param target_subdir: The relative path where we want to merge
1820
other_tree into this_tree
1821
:param source_subpath: The relative path specifying the subtree of
1822
other_tree to merge into this_tree.
1824
# It is assumed that we are merging a tree that is not in our current
1825
# ancestry, which means we are using the "EmptyTree" as our basis.
1826
null_ancestor_tree = this_tree.branch.repository.revision_tree(
1827
_mod_revision.NULL_REVISION)
1828
super(MergeIntoMerger, self).__init__(
1829
this_branch=this_tree.branch,
1830
this_tree=this_tree,
1831
other_tree=other_tree,
1832
base_tree=null_ancestor_tree,
1834
self._target_subdir = target_subdir
1835
self._source_subpath = source_subpath
1836
self.other_branch = other_branch
1837
if other_rev_id is None:
1838
other_rev_id = other_tree.get_revision_id()
1839
self.other_rev_id = self.other_basis = other_rev_id
1840
self.base_is_ancestor = True
1841
self.backup_files = True
1842
self.merge_type = Merge3Merger
1843
self.show_base = False
1844
self.reprocess = False
1845
self.interesting_ids = None
1846
self.merge_type = _MergeTypeParameterizer(MergeIntoMergeType,
1847
target_subdir=self._target_subdir,
1848
source_subpath=self._source_subpath)
1849
if self._source_subpath != '':
1850
# If this isn't a partial merge make sure the revisions will be
1852
self._maybe_fetch(self.other_branch, self.this_branch,
1855
def set_pending(self):
1856
if self._source_subpath != '':
1858
Merger.set_pending(self)
1861
class _MergeTypeParameterizer(object):
1862
"""Wrap a merge-type class to provide extra parameters.
1864
This is hack used by MergeIntoMerger to pass some extra parameters to its
1865
merge_type. Merger.do_merge() sets up its own set of parameters to pass to
1866
the 'merge_type' member. It is difficult override do_merge without
1867
re-writing the whole thing, so instead we create a wrapper which will pass
1868
the extra parameters.
1871
def __init__(self, merge_type, **kwargs):
1872
self._extra_kwargs = kwargs
1873
self._merge_type = merge_type
1875
def __call__(self, *args, **kwargs):
1876
kwargs.update(self._extra_kwargs)
1877
return self._merge_type(*args, **kwargs)
1879
def __getattr__(self, name):
1880
return getattr(self._merge_type, name)
1883
class MergeIntoMergeType(Merge3Merger):
1884
"""Merger that incorporates a tree (or part of a tree) into another."""
1886
def __init__(self, *args, **kwargs):
1887
"""Initialize the merger object.
1889
:param args: See Merge3Merger.__init__'s args.
1890
:param kwargs: See Merge3Merger.__init__'s keyword args, except for
1891
source_subpath and target_subdir.
1892
:keyword source_subpath: The relative path specifying the subtree of
1893
other_tree to merge into this_tree.
1894
:keyword target_subdir: The relative path where we want to merge
1895
other_tree into this_tree
1897
# All of the interesting work happens during Merge3Merger.__init__(),
1898
# so we have have to hack in to get our extra parameters set.
1899
self._source_subpath = kwargs.pop('source_subpath')
1900
self._target_subdir = kwargs.pop('target_subdir')
1901
super(MergeIntoMergeType, self).__init__(*args, **kwargs)
1903
def _compute_transform(self):
1904
child_pb = ui.ui_factory.nested_progress_bar()
1906
entries = self._entries_to_incorporate()
1907
entries = list(entries)
1908
for num, (entry, parent_id) in enumerate(entries):
1909
child_pb.update('Preparing file merge', num, len(entries))
1910
parent_trans_id = self.tt.trans_id_file_id(parent_id)
1911
trans_id = transform.new_by_entry(self.tt, entry,
1912
parent_trans_id, self.other_tree)
1915
self._finish_computing_transform()
1917
def _entries_to_incorporate(self):
1918
"""Yields pairs of (inventory_entry, new_parent)."""
1919
other_inv = self.other_tree.inventory
1920
subdir_id = other_inv.path2id(self._source_subpath)
1921
if subdir_id is None:
1922
# XXX: The error would be clearer if it gave the URL of the source
1923
# branch, but we don't have a reference to that here.
1924
raise PathNotInTree(self._source_subpath, "Source tree")
1925
subdir = other_inv[subdir_id]
1926
parent_in_target = osutils.dirname(self._target_subdir)
1927
target_id = self.this_tree.inventory.path2id(parent_in_target)
1928
if target_id is None:
1929
raise PathNotInTree(self._target_subdir, "Target tree")
1930
name_in_target = osutils.basename(self._target_subdir)
1931
merge_into_root = subdir.copy()
1932
merge_into_root.name = name_in_target
1933
if self.this_tree.inventory.has_id(merge_into_root.file_id):
1934
# Give the root a new file-id.
1935
# This can happen fairly easily if the directory we are
1936
# incorporating is the root, and both trees have 'TREE_ROOT' as
1937
# their root_id. Users will expect this to Just Work, so we
1938
# change the file-id here.
1939
# Non-root file-ids could potentially conflict too. That's really
1940
# an edge case, so we don't do anything special for those. We let
1941
# them cause conflicts.
1942
merge_into_root.file_id = generate_ids.gen_file_id(name_in_target)
1943
yield (merge_into_root, target_id)
1944
if subdir.kind != 'directory':
1945
# No children, so we are done.
1947
for ignored_path, entry in other_inv.iter_entries_by_dir(subdir_id):
1948
parent_id = entry.parent_id
1949
if parent_id == subdir.file_id:
1950
# The root's parent ID has changed, so make sure children of
1951
# the root refer to the new ID.
1952
parent_id = merge_into_root.file_id
1953
yield (entry, parent_id)
1956
1611
def merge_inner(this_branch, other_tree, base_tree, ignore_zero=False,
1957
1612
backup_files=False,
1958
1613
merge_type=Merge3Merger,
added
removed
bzrlib/merge.py
