587
592
self.base_rev_id = self.revision_graph.find_unique_lca(
589
self._is_criss_cross = True
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]
590
599
if self.base_rev_id == _mod_revision.NULL_REVISION:
591
600
raise errors.UnrelatedBranches()
592
601
if self._is_criss_cross:
593
602
trace.warning('Warning: criss-cross merge encountered. See bzr'
594
603
' help criss-cross.')
595
604
trace.mutter('Criss-cross lcas: %r' % lcas)
596
interesting_revision_ids = [self.base_rev_id]
597
interesting_revision_ids.extend(lcas)
605
if self.base_rev_id in lcas:
606
trace.mutter('Unable to find unique lca. '
607
'Fallback %r as best option.'
609
interesting_revision_ids = set(lcas)
610
interesting_revision_ids.add(self.base_rev_id)
598
611
interesting_trees = dict((t.get_revision_id(), t)
599
612
for t in self.this_branch.repository.revision_trees(
600
613
interesting_revision_ids))
601
614
self._cached_trees.update(interesting_trees)
602
self.base_tree = interesting_trees.pop(self.base_rev_id)
603
sorted_lca_keys = self.revision_graph.find_merge_order(
615
if self.base_rev_id in lcas:
616
self.base_tree = interesting_trees[self.base_rev_id]
618
self.base_tree = interesting_trees.pop(self.base_rev_id)
605
619
self._lca_trees = [interesting_trees[key]
606
620
for key in sorted_lca_keys]
913
935
it then compares with THIS and BASE.
915
937
For the multi-valued entries, the format will be (BASE, [lca1, lca2])
916
:return: [(file_id, changed, parents, names, executable)]
917
file_id Simple file_id of the entry
918
changed Boolean, True if the kind or contents changed
920
parents ((base, [parent_id, in, lcas]), parent_id_other,
922
names ((base, [name, in, lcas]), name_in_other, name_in_this)
923
executable ((base, [exec, in, lcas]), exec_in_other, exec_in_this)
939
:return: [(file_id, changed, parents, names, executable)], where:
941
* file_id: Simple file_id of the entry
942
* changed: Boolean, True if the kind or contents changed else False
943
* parents: ((base, [parent_id, in, lcas]), parent_id_other,
945
* names: ((base, [name, in, lcas]), name_in_other, name_in_this)
946
* executable: ((base, [exec, in, lcas]), exec_in_other,
925
949
if self.interesting_files is not None:
926
950
lookup_trees = [self.this_tree, self.base_tree]
1086
1108
other_root = self.tt.trans_id_file_id(other_root_file_id)
1087
1109
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)
1111
if self.this_tree.inventory.has_id(
1112
self.other_tree.inventory.root.file_id):
1113
# the other tree's root is a non-root in the current tree (as
1114
# when a previously unrelated branch is merged into another)
1094
self.tt.final_kind(other_root)
1116
if self.tt.final_kind(other_root) is not None:
1095
1117
other_root_is_present = True
1096
except errors.NoSuchFile:
1097
1119
# other_root doesn't have a physical representation. We still need
1098
1120
# to move any references to the actual root of the tree.
1099
1121
other_root_is_present = False
1100
1122
# 'other_tree.inventory.root' is not present in this tree. We are
1101
1123
# calling adjust_path for children which *want* to be present with a
1102
1124
# correct place to go.
1103
for thing, child in self.other_tree.inventory.root.children.iteritems():
1125
for _, child in self.other_tree.inventory.root.children.iteritems():
1104
1126
trans_id = self.tt.trans_id_file_id(child.file_id)
1105
1127
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)
1128
if self.tt.final_kind(trans_id) is not None:
1110
1129
# The item exist in the final tree and has a defined place
1111
1130
# to go already.
1113
except errors.NoSuchFile, e:
1115
1132
# Move the item into the root
1116
self.tt.adjust_path(self.tt.final_name(trans_id),
1117
self.tt.root, trans_id)
1134
final_name = self.tt.final_name(trans_id)
1135
except errors.NoFinalPath:
1136
# This file is not present anymore, ignore it.
1138
self.tt.adjust_path(final_name, self.tt.root, trans_id)
1118
1139
if other_root_is_present:
1119
1140
self.tt.cancel_creation(other_root)
1120
1141
self.tt.cancel_versioning(other_root)
1299
1320
self._raw_conflicts.append(('path conflict', trans_id, file_id,
1300
1321
this_parent, this_name,
1301
1322
other_parent, other_name))
1302
if other_name is None:
1323
if not self.other_tree.has_id(file_id):
1303
1324
# it doesn't matter whether the result was 'other' or
1304
# 'conflict'-- if there's no 'other', we leave it alone.
1325
# 'conflict'-- if it has no file id, we leave it alone.
1306
1327
parent_id = parents[self.winner_idx[parent_id_winner]]
1307
if parent_id is not None:
1328
name = names[self.winner_idx[name_winner]]
1329
if parent_id is not None or name is not None:
1308
1330
# if we get here, name_winner and parent_winner are set to safe
1310
self.tt.adjust_path(names[self.winner_idx[name_winner]],
1311
self.tt.trans_id_file_id(parent_id),
1332
if parent_id is None and name is not None:
1333
# if parent_id is None and name is non-None, current file is
1335
if names[self.winner_idx[parent_id_winner]] != '':
1336
raise AssertionError(
1337
'File looks like a root, but named %s' %
1338
names[self.winner_idx[parent_id_winner]])
1339
parent_trans_id = transform.ROOT_PARENT
1341
parent_trans_id = self.tt.trans_id_file_id(parent_id)
1342
self.tt.adjust_path(name, parent_trans_id,
1312
1343
self.tt.trans_id_file_id(file_id))
1314
1345
def _do_merge_contents(self, file_id):
1315
1346
"""Performs a merge on file_id contents."""
1316
1347
def contents_pair(tree):
1317
if file_id not in tree:
1348
if not tree.has_id(file_id):
1318
1349
return (None, None)
1319
1350
kind = tree.kind(file_id)
1320
1351
if kind == "file":
1358
1389
if hook_status != 'not_applicable':
1359
1390
# Don't try any more hooks, this one applies.
1392
# If the merge ends up replacing the content of the file, we get rid of
1393
# it at the end of this method (this variable is used to track the
1394
# exceptions to this rule).
1361
1396
result = "modified"
1362
1397
if hook_status == 'not_applicable':
1363
# This is a contents conflict, because none of the available
1364
# functions could merge it.
1398
# No merge hook was able to resolve the situation. Two cases exist:
1399
# a content conflict or a duplicate one.
1366
1401
name = self.tt.final_name(trans_id)
1367
1402
parent_id = self.tt.final_parent(trans_id)
1368
if self.this_tree.has_id(file_id):
1369
self.tt.unversion_file(trans_id)
1370
file_group = self._dump_conflicts(name, parent_id, file_id,
1372
self._raw_conflicts.append(('contents conflict', file_group))
1404
inhibit_content_conflict = False
1405
if params.this_kind is None: # file_id is not in THIS
1406
# Is the name used for a different file_id ?
1407
dupe_path = self.other_tree.id2path(file_id)
1408
this_id = self.this_tree.path2id(dupe_path)
1409
if this_id is not None:
1410
# Two entries for the same path
1412
# versioning the merged file will trigger a duplicate
1414
self.tt.version_file(file_id, trans_id)
1415
transform.create_from_tree(
1416
self.tt, trans_id, self.other_tree, file_id,
1417
filter_tree_path=self._get_filter_tree_path(file_id))
1418
inhibit_content_conflict = True
1419
elif params.other_kind is None: # file_id is not in OTHER
1420
# Is the name used for a different file_id ?
1421
dupe_path = self.this_tree.id2path(file_id)
1422
other_id = self.other_tree.path2id(dupe_path)
1423
if other_id is not None:
1424
# Two entries for the same path again, but here, the other
1425
# entry will also be merged. We simply inhibit the
1426
# 'content' conflict creation because we know OTHER will
1427
# create (or has already created depending on ordering) an
1428
# entry at the same path. This will trigger a 'duplicate'
1431
inhibit_content_conflict = True
1432
if not inhibit_content_conflict:
1433
if params.this_kind is not None:
1434
self.tt.unversion_file(trans_id)
1435
# This is a contents conflict, because none of the available
1436
# functions could merge it.
1437
file_group = self._dump_conflicts(name, parent_id, file_id,
1439
self._raw_conflicts.append(('contents conflict', file_group))
1373
1440
elif hook_status == 'success':
1374
1441
self.tt.create_file(lines, trans_id)
1375
1442
elif hook_status == 'conflicted':
1391
1458
raise AssertionError('unknown hook_status: %r' % (hook_status,))
1392
1459
if not self.this_tree.has_id(file_id) and result == "modified":
1393
1460
self.tt.version_file(file_id, trans_id)
1394
# The merge has been performed, so the old contents should not be
1462
# The merge has been performed and produced a new content, so the
1463
# old contents should not be retained.
1397
1464
self.tt.delete_contents(trans_id)
1398
except errors.NoSuchFile:
1402
1467
def _default_other_winner_merge(self, merge_hook_params):
1403
1468
"""Replace this contents with other."""
1404
1469
file_id = merge_hook_params.file_id
1405
1470
trans_id = merge_hook_params.trans_id
1406
file_in_this = self.this_tree.has_id(file_id)
1407
1471
if self.other_tree.has_id(file_id):
1408
1472
# OTHER changed the file
1410
if wt.supports_content_filtering():
1411
# We get the path from the working tree if it exists.
1412
# That fails though when OTHER is adding a file, so
1413
# we fall back to the other tree to find the path if
1414
# it doesn't exist locally.
1416
filter_tree_path = wt.id2path(file_id)
1417
except errors.NoSuchId:
1418
filter_tree_path = self.other_tree.id2path(file_id)
1420
# Skip the id2path lookup for older formats
1421
filter_tree_path = None
1422
transform.create_from_tree(self.tt, trans_id,
1423
self.other_tree, file_id,
1424
filter_tree_path=filter_tree_path)
1473
transform.create_from_tree(
1474
self.tt, trans_id, self.other_tree, file_id,
1475
filter_tree_path=self._get_filter_tree_path(file_id))
1425
1476
return 'done', None
1477
elif self.this_tree.has_id(file_id):
1427
1478
# OTHER deleted the file
1428
1479
return 'delete', None
1750
1832
osutils.rmtree(temp_dir)
1835
class PathNotInTree(errors.BzrError):
1837
_fmt = """Merge-into failed because %(tree)s does not contain %(path)s."""
1839
def __init__(self, path, tree):
1840
errors.BzrError.__init__(self, path=path, tree=tree)
1843
class MergeIntoMerger(Merger):
1844
"""Merger that understands other_tree will be merged into a subdir.
1846
This also changes the Merger api so that it uses real Branch, revision_id,
1847
and RevisonTree objects, rather than using revision specs.
1850
def __init__(self, this_tree, other_branch, other_tree, target_subdir,
1851
source_subpath, other_rev_id=None):
1852
"""Create a new MergeIntoMerger object.
1854
source_subpath in other_tree will be effectively copied to
1855
target_subdir in this_tree.
1857
:param this_tree: The tree that we will be merging into.
1858
:param other_branch: The Branch we will be merging from.
1859
:param other_tree: The RevisionTree object we want to merge.
1860
:param target_subdir: The relative path where we want to merge
1861
other_tree into this_tree
1862
:param source_subpath: The relative path specifying the subtree of
1863
other_tree to merge into this_tree.
1865
# It is assumed that we are merging a tree that is not in our current
1866
# ancestry, which means we are using the "EmptyTree" as our basis.
1867
null_ancestor_tree = this_tree.branch.repository.revision_tree(
1868
_mod_revision.NULL_REVISION)
1869
super(MergeIntoMerger, self).__init__(
1870
this_branch=this_tree.branch,
1871
this_tree=this_tree,
1872
other_tree=other_tree,
1873
base_tree=null_ancestor_tree,
1875
self._target_subdir = target_subdir
1876
self._source_subpath = source_subpath
1877
self.other_branch = other_branch
1878
if other_rev_id is None:
1879
other_rev_id = other_tree.get_revision_id()
1880
self.other_rev_id = self.other_basis = other_rev_id
1881
self.base_is_ancestor = True
1882
self.backup_files = True
1883
self.merge_type = Merge3Merger
1884
self.show_base = False
1885
self.reprocess = False
1886
self.interesting_ids = None
1887
self.merge_type = _MergeTypeParameterizer(MergeIntoMergeType,
1888
target_subdir=self._target_subdir,
1889
source_subpath=self._source_subpath)
1890
if self._source_subpath != '':
1891
# If this isn't a partial merge make sure the revisions will be
1893
self._maybe_fetch(self.other_branch, self.this_branch,
1896
def set_pending(self):
1897
if self._source_subpath != '':
1899
Merger.set_pending(self)
1902
class _MergeTypeParameterizer(object):
1903
"""Wrap a merge-type class to provide extra parameters.
1905
This is hack used by MergeIntoMerger to pass some extra parameters to its
1906
merge_type. Merger.do_merge() sets up its own set of parameters to pass to
1907
the 'merge_type' member. It is difficult override do_merge without
1908
re-writing the whole thing, so instead we create a wrapper which will pass
1909
the extra parameters.
1912
def __init__(self, merge_type, **kwargs):
1913
self._extra_kwargs = kwargs
1914
self._merge_type = merge_type
1916
def __call__(self, *args, **kwargs):
1917
kwargs.update(self._extra_kwargs)
1918
return self._merge_type(*args, **kwargs)
1920
def __getattr__(self, name):
1921
return getattr(self._merge_type, name)
1924
class MergeIntoMergeType(Merge3Merger):
1925
"""Merger that incorporates a tree (or part of a tree) into another."""
1927
def __init__(self, *args, **kwargs):
1928
"""Initialize the merger object.
1930
:param args: See Merge3Merger.__init__'s args.
1931
:param kwargs: See Merge3Merger.__init__'s keyword args, except for
1932
source_subpath and target_subdir.
1933
:keyword source_subpath: The relative path specifying the subtree of
1934
other_tree to merge into this_tree.
1935
:keyword target_subdir: The relative path where we want to merge
1936
other_tree into this_tree
1938
# All of the interesting work happens during Merge3Merger.__init__(),
1939
# so we have have to hack in to get our extra parameters set.
1940
self._source_subpath = kwargs.pop('source_subpath')
1941
self._target_subdir = kwargs.pop('target_subdir')
1942
super(MergeIntoMergeType, self).__init__(*args, **kwargs)
1944
def _compute_transform(self):
1945
child_pb = ui.ui_factory.nested_progress_bar()
1947
entries = self._entries_to_incorporate()
1948
entries = list(entries)
1949
for num, (entry, parent_id) in enumerate(entries):
1950
child_pb.update('Preparing file merge', num, len(entries))
1951
parent_trans_id = self.tt.trans_id_file_id(parent_id)
1952
trans_id = transform.new_by_entry(self.tt, entry,
1953
parent_trans_id, self.other_tree)
1956
self._finish_computing_transform()
1958
def _entries_to_incorporate(self):
1959
"""Yields pairs of (inventory_entry, new_parent)."""
1960
other_inv = self.other_tree.inventory
1961
subdir_id = other_inv.path2id(self._source_subpath)
1962
if subdir_id is None:
1963
# XXX: The error would be clearer if it gave the URL of the source
1964
# branch, but we don't have a reference to that here.
1965
raise PathNotInTree(self._source_subpath, "Source tree")
1966
subdir = other_inv[subdir_id]
1967
parent_in_target = osutils.dirname(self._target_subdir)
1968
target_id = self.this_tree.inventory.path2id(parent_in_target)
1969
if target_id is None:
1970
raise PathNotInTree(self._target_subdir, "Target tree")
1971
name_in_target = osutils.basename(self._target_subdir)
1972
merge_into_root = subdir.copy()
1973
merge_into_root.name = name_in_target
1974
if self.this_tree.inventory.has_id(merge_into_root.file_id):
1975
# Give the root a new file-id.
1976
# This can happen fairly easily if the directory we are
1977
# incorporating is the root, and both trees have 'TREE_ROOT' as
1978
# their root_id. Users will expect this to Just Work, so we
1979
# change the file-id here.
1980
# Non-root file-ids could potentially conflict too. That's really
1981
# an edge case, so we don't do anything special for those. We let
1982
# them cause conflicts.
1983
merge_into_root.file_id = generate_ids.gen_file_id(name_in_target)
1984
yield (merge_into_root, target_id)
1985
if subdir.kind != 'directory':
1986
# No children, so we are done.
1988
for ignored_path, entry in other_inv.iter_entries_by_dir(subdir_id):
1989
parent_id = entry.parent_id
1990
if parent_id == subdir.file_id:
1991
# The root's parent ID has changed, so make sure children of
1992
# the root refer to the new ID.
1993
parent_id = merge_into_root.file_id
1994
yield (entry, parent_id)
1753
1997
def merge_inner(this_branch, other_tree, base_tree, ignore_zero=False,
1754
1998
backup_files=False,
1755
1999
merge_type=Merge3Merger,
added
removed
bzrlib/merge.py
