101
93
return ('not applicable', None)
104
class PerFileMerger(AbstractPerFileMerger):
105
"""Merge individual files when self.file_matches returns True.
107
This class is intended to be subclassed. The file_matches and
108
merge_matching methods should be overridden with concrete implementations.
111
def file_matches(self, params):
112
"""Return True if merge_matching should be called on this file.
114
Only called with merges of plain files with no clear winner.
116
Subclasses must override this.
118
raise NotImplementedError(self.file_matches)
120
def get_filename(self, params, tree):
121
"""Lookup the filename (i.e. basename, not path), given a Tree (e.g.
122
self.merger.this_tree) and a MergeHookParams.
124
return osutils.basename(tree.id2path(params.file_id))
126
def get_filepath(self, params, tree):
127
"""Calculate the path to the file in a tree.
129
:param params: A MergeHookParams describing the file to merge
130
:param tree: a Tree, e.g. self.merger.this_tree.
132
return tree.id2path(params.file_id)
134
def merge_contents(self, params):
135
"""Merge the contents of a single file."""
136
# Check whether this custom merge logic should be used.
138
# OTHER is a straight winner, rely on default merge.
139
params.winner == 'other' or
140
# THIS and OTHER aren't both files.
141
not params.is_file_merge() or
142
# The filename doesn't match *.xml
143
not self.file_matches(params)):
144
return 'not_applicable', None
145
return self.merge_matching(params)
147
def merge_matching(self, params):
148
"""Merge the contents of a single file that has matched the criteria
149
in PerFileMerger.merge_contents (is a conflict, is a file,
150
self.file_matches is True).
152
Subclasses must override this.
154
raise NotImplementedError(self.merge_matching)
157
class ConfigurableFileMerger(PerFileMerger):
96
class ConfigurableFileMerger(AbstractPerFileMerger):
158
97
"""Merge individual files when configured via a .conf file.
160
99
This is a base class for concrete custom file merging logic. Concrete
593
546
self.base_rev_id = self.revision_graph.find_unique_lca(
595
sorted_lca_keys = self.revision_graph.find_merge_order(
597
if self.base_rev_id == _mod_revision.NULL_REVISION:
598
self.base_rev_id = sorted_lca_keys[0]
548
self._is_criss_cross = True
600
549
if self.base_rev_id == _mod_revision.NULL_REVISION:
601
550
raise errors.UnrelatedBranches()
602
551
if self._is_criss_cross:
603
552
trace.warning('Warning: criss-cross merge encountered. See bzr'
604
553
' help criss-cross.')
605
554
trace.mutter('Criss-cross lcas: %r' % lcas)
606
if self.base_rev_id in lcas:
607
trace.mutter('Unable to find unique lca. '
608
'Fallback %r as best option.' % self.base_rev_id)
609
interesting_revision_ids = set(lcas)
610
interesting_revision_ids.add(self.base_rev_id)
555
interesting_revision_ids = [self.base_rev_id]
556
interesting_revision_ids.extend(lcas)
611
557
interesting_trees = dict((t.get_revision_id(), t)
612
558
for t in self.this_branch.repository.revision_trees(
613
559
interesting_revision_ids))
614
560
self._cached_trees.update(interesting_trees)
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)
561
self.base_tree = interesting_trees.pop(self.base_rev_id)
562
sorted_lca_keys = self.revision_graph.find_merge_order(
619
564
self._lca_trees = [interesting_trees[key]
620
565
for key in sorted_lca_keys]
934
869
it then compares with THIS and BASE.
936
871
For the multi-valued entries, the format will be (BASE, [lca1, lca2])
938
:return: [(file_id, changed, parents, names, executable)], where:
940
* file_id: Simple file_id of the entry
941
* changed: Boolean, True if the kind or contents changed else False
942
* parents: ((base, [parent_id, in, lcas]), parent_id_other,
944
* names: ((base, [name, in, lcas]), name_in_other, name_in_this)
945
* executable: ((base, [exec, in, lcas]), exec_in_other,
872
:return: [(file_id, changed, parents, names, executable)]
873
file_id Simple file_id of the entry
874
changed Boolean, True if the kind or contents changed
876
parents ((base, [parent_id, in, lcas]), parent_id_other,
878
names ((base, [name, in, lcas]), name_in_other, name_in_this)
879
executable ((base, [exec, in, lcas]), exec_in_other, exec_in_this)
948
881
if self.interesting_files is not None:
949
882
lookup_trees = [self.this_tree, self.base_tree]
1107
1043
other_root = self.tt.trans_id_file_id(other_root_file_id)
1108
1044
if other_root == self.tt.root:
1110
if self.this_tree.inventory.has_id(
1111
self.other_tree.inventory.root.file_id):
1112
# the other tree's root is a non-root in the current tree (as
1113
# when a previously unrelated branch is merged into another)
1115
if self.tt.final_kind(other_root) is not None:
1116
other_root_is_present = True
1118
# other_root doesn't have a physical representation. We still need
1119
# to move any references to the actual root of the tree.
1120
other_root_is_present = False
1121
# 'other_tree.inventory.root' is not present in this tree. We are
1122
# calling adjust_path for children which *want* to be present with a
1123
# correct place to go.
1124
for _, child in self.other_tree.inventory.root.children.iteritems():
1047
self.tt.final_kind(other_root)
1048
except errors.NoSuchFile:
1050
if self.this_tree.has_id(self.other_tree.inventory.root.file_id):
1051
# the other tree's root is a non-root in the current tree
1053
self.reparent_children(self.other_tree.inventory.root, self.tt.root)
1054
self.tt.cancel_creation(other_root)
1055
self.tt.cancel_versioning(other_root)
1057
def reparent_children(self, ie, target):
1058
for thing, child in ie.children.iteritems():
1125
1059
trans_id = self.tt.trans_id_file_id(child.file_id)
1126
if not other_root_is_present:
1127
if self.tt.final_kind(trans_id) is not None:
1128
# The item exist in the final tree and has a defined place
1131
# Move the item into the root
1133
final_name = self.tt.final_name(trans_id)
1134
except errors.NoFinalPath:
1135
# This file is not present anymore, ignore it.
1137
self.tt.adjust_path(final_name, self.tt.root, trans_id)
1138
if other_root_is_present:
1139
self.tt.cancel_creation(other_root)
1140
self.tt.cancel_versioning(other_root)
1060
self.tt.adjust_path(self.tt.final_name(trans_id), target, trans_id)
1142
1062
def write_modified(self, results):
1143
1063
modified_hashes = {}
1311
1228
parent_id_winner = "other"
1312
1229
if name_winner == "this" and parent_id_winner == "this":
1314
if name_winner == 'conflict' or parent_id_winner == 'conflict':
1315
# Creating helpers (.OTHER or .THIS) here cause problems down the
1316
# road if a ContentConflict needs to be created so we should not do
1318
trans_id = self.tt.trans_id_file_id(file_id)
1319
self._raw_conflicts.append(('path conflict', trans_id, file_id,
1320
this_parent, this_name,
1321
other_parent, other_name))
1322
if not self.other_tree.has_id(file_id):
1231
if name_winner == "conflict":
1232
trans_id = self.tt.trans_id_file_id(file_id)
1233
self._raw_conflicts.append(('name conflict', trans_id,
1234
this_name, other_name))
1235
if parent_id_winner == "conflict":
1236
trans_id = self.tt.trans_id_file_id(file_id)
1237
self._raw_conflicts.append(('parent conflict', trans_id,
1238
this_parent, other_parent))
1239
if other_name is None:
1323
1240
# it doesn't matter whether the result was 'other' or
1324
# 'conflict'-- if it has no file id, we leave it alone.
1241
# 'conflict'-- if there's no 'other', we leave it alone.
1243
# if we get here, name_winner and parent_winner are set to safe values.
1244
trans_id = self.tt.trans_id_file_id(file_id)
1326
1245
parent_id = parents[self.winner_idx[parent_id_winner]]
1327
name = names[self.winner_idx[name_winner]]
1328
if parent_id is not None or name is not None:
1329
# if we get here, name_winner and parent_winner are set to safe
1331
if parent_id is None and name is not None:
1332
# if parent_id is None and name is non-None, current file is
1334
if names[self.winner_idx[parent_id_winner]] != '':
1335
raise AssertionError(
1336
'File looks like a root, but named %s' %
1337
names[self.winner_idx[parent_id_winner]])
1338
parent_trans_id = transform.ROOT_PARENT
1340
parent_trans_id = self.tt.trans_id_file_id(parent_id)
1341
self.tt.adjust_path(name, parent_trans_id,
1342
self.tt.trans_id_file_id(file_id))
1246
if parent_id is not None:
1247
parent_trans_id = self.tt.trans_id_file_id(parent_id)
1248
self.tt.adjust_path(names[self.winner_idx[name_winner]],
1249
parent_trans_id, trans_id)
1344
1251
def _do_merge_contents(self, file_id):
1345
1252
"""Performs a merge on file_id contents."""
1346
1253
def contents_pair(tree):
1347
if not tree.has_id(file_id):
1254
if file_id not in tree:
1348
1255
return (None, None)
1349
1256
kind = tree.kind(file_id)
1350
1257
if kind == "file":
1619
1532
def cook_conflicts(self, fs_conflicts):
1620
1533
"""Convert all conflicts into a form that doesn't depend on trans_id"""
1621
content_conflict_file_ids = set()
1622
cooked_conflicts = transform.cook_conflicts(fs_conflicts, self.tt)
1535
self.cooked_conflicts.extend(transform.cook_conflicts(
1536
fs_conflicts, self.tt))
1623
1537
fp = transform.FinalPaths(self.tt)
1624
1538
for conflict in self._raw_conflicts:
1625
1539
conflict_type = conflict[0]
1626
if conflict_type == 'path conflict':
1628
this_parent, this_name,
1629
other_parent, other_name) = conflict[1:]
1630
if this_parent is None or this_name is None:
1631
this_path = '<deleted>'
1633
parent_path = fp.get_path(
1634
self.tt.trans_id_file_id(this_parent))
1635
this_path = osutils.pathjoin(parent_path, this_name)
1636
if other_parent is None or other_name is None:
1637
other_path = '<deleted>'
1639
if other_parent == self.other_tree.get_root_id():
1640
# The tree transform doesn't know about the other root,
1641
# so we special case here to avoid a NoFinalPath
1645
parent_path = fp.get_path(
1646
self.tt.trans_id_file_id(other_parent))
1647
other_path = osutils.pathjoin(parent_path, other_name)
1648
c = _mod_conflicts.Conflict.factory(
1649
'path conflict', path=this_path,
1650
conflict_path=other_path,
1652
elif conflict_type == 'contents conflict':
1540
if conflict_type in ('name conflict', 'parent conflict'):
1541
trans_id = conflict[1]
1542
conflict_args = conflict[2:]
1543
if trans_id not in name_conflicts:
1544
name_conflicts[trans_id] = {}
1545
transform.unique_add(name_conflicts[trans_id], conflict_type,
1547
if conflict_type == 'contents conflict':
1653
1548
for trans_id in conflict[1]:
1654
1549
file_id = self.tt.final_file_id(trans_id)
1655
1550
if file_id is not None:
1662
1557
c = _mod_conflicts.Conflict.factory(conflict_type,
1663
1558
path=path, file_id=file_id)
1664
content_conflict_file_ids.add(file_id)
1665
elif conflict_type == 'text conflict':
1559
self.cooked_conflicts.append(c)
1560
if conflict_type == 'text conflict':
1666
1561
trans_id = conflict[1]
1667
1562
path = fp.get_path(trans_id)
1668
1563
file_id = self.tt.final_file_id(trans_id)
1669
1564
c = _mod_conflicts.Conflict.factory(conflict_type,
1670
1565
path=path, file_id=file_id)
1566
self.cooked_conflicts.append(c)
1568
for trans_id, conflicts in name_conflicts.iteritems():
1570
this_parent, other_parent = conflicts['parent conflict']
1571
if this_parent == other_parent:
1572
raise AssertionError()
1574
this_parent = other_parent = \
1575
self.tt.final_file_id(self.tt.final_parent(trans_id))
1577
this_name, other_name = conflicts['name conflict']
1578
if this_name == other_name:
1579
raise AssertionError()
1581
this_name = other_name = self.tt.final_name(trans_id)
1582
other_path = fp.get_path(trans_id)
1583
if this_parent is not None and this_name is not None:
1584
this_parent_path = \
1585
fp.get_path(self.tt.trans_id_file_id(this_parent))
1586
this_path = osutils.pathjoin(this_parent_path, this_name)
1672
raise AssertionError('bad conflict type: %r' % (conflict,))
1673
cooked_conflicts.append(c)
1675
self.cooked_conflicts = []
1676
# We want to get rid of path conflicts when a corresponding contents
1677
# conflict exists. This can occur when one branch deletes a file while
1678
# the other renames *and* modifies it. In this case, the content
1679
# conflict is enough.
1680
for c in cooked_conflicts:
1681
if (c.typestring == 'path conflict'
1682
and c.file_id in content_conflict_file_ids):
1588
this_path = "<deleted>"
1589
file_id = self.tt.final_file_id(trans_id)
1590
c = _mod_conflicts.Conflict.factory('path conflict', path=this_path,
1591
conflict_path=other_path,
1684
1593
self.cooked_conflicts.append(c)
1685
1594
self.cooked_conflicts.sort(key=_mod_conflicts.Conflict.sort_key)
1792
1701
osutils.rmtree(temp_dir)
1795
class PathNotInTree(errors.BzrError):
1797
_fmt = """Merge-into failed because %(tree)s does not contain %(path)s."""
1799
def __init__(self, path, tree):
1800
errors.BzrError.__init__(self, path=path, tree=tree)
1803
class MergeIntoMerger(Merger):
1804
"""Merger that understands other_tree will be merged into a subdir.
1806
This also changes the Merger api so that it uses real Branch, revision_id,
1807
and RevisonTree objects, rather than using revision specs.
1810
def __init__(self, this_tree, other_branch, other_tree, target_subdir,
1811
source_subpath, other_rev_id=None):
1812
"""Create a new MergeIntoMerger object.
1814
source_subpath in other_tree will be effectively copied to
1815
target_subdir in this_tree.
1817
:param this_tree: The tree that we will be merging into.
1818
:param other_branch: The Branch we will be merging from.
1819
:param other_tree: The RevisionTree object we want to merge.
1820
:param target_subdir: The relative path where we want to merge
1821
other_tree into this_tree
1822
:param source_subpath: The relative path specifying the subtree of
1823
other_tree to merge into this_tree.
1825
# It is assumed that we are merging a tree that is not in our current
1826
# ancestry, which means we are using the "EmptyTree" as our basis.
1827
null_ancestor_tree = this_tree.branch.repository.revision_tree(
1828
_mod_revision.NULL_REVISION)
1829
super(MergeIntoMerger, self).__init__(
1830
this_branch=this_tree.branch,
1831
this_tree=this_tree,
1832
other_tree=other_tree,
1833
base_tree=null_ancestor_tree,
1835
self._target_subdir = target_subdir
1836
self._source_subpath = source_subpath
1837
self.other_branch = other_branch
1838
if other_rev_id is None:
1839
other_rev_id = other_tree.get_revision_id()
1840
self.other_rev_id = self.other_basis = other_rev_id
1841
self.base_is_ancestor = True
1842
self.backup_files = True
1843
self.merge_type = Merge3Merger
1844
self.show_base = False
1845
self.reprocess = False
1846
self.interesting_ids = None
1847
self.merge_type = _MergeTypeParameterizer(MergeIntoMergeType,
1848
target_subdir=self._target_subdir,
1849
source_subpath=self._source_subpath)
1850
if self._source_subpath != '':
1851
# If this isn't a partial merge make sure the revisions will be
1853
self._maybe_fetch(self.other_branch, self.this_branch,
1856
def set_pending(self):
1857
if self._source_subpath != '':
1859
Merger.set_pending(self)
1862
class _MergeTypeParameterizer(object):
1863
"""Wrap a merge-type class to provide extra parameters.
1865
This is hack used by MergeIntoMerger to pass some extra parameters to its
1866
merge_type. Merger.do_merge() sets up its own set of parameters to pass to
1867
the 'merge_type' member. It is difficult override do_merge without
1868
re-writing the whole thing, so instead we create a wrapper which will pass
1869
the extra parameters.
1872
def __init__(self, merge_type, **kwargs):
1873
self._extra_kwargs = kwargs
1874
self._merge_type = merge_type
1876
def __call__(self, *args, **kwargs):
1877
kwargs.update(self._extra_kwargs)
1878
return self._merge_type(*args, **kwargs)
1880
def __getattr__(self, name):
1881
return getattr(self._merge_type, name)
1884
class MergeIntoMergeType(Merge3Merger):
1885
"""Merger that incorporates a tree (or part of a tree) into another."""
1887
def __init__(self, *args, **kwargs):
1888
"""Initialize the merger object.
1890
:param args: See Merge3Merger.__init__'s args.
1891
:param kwargs: See Merge3Merger.__init__'s keyword args, except for
1892
source_subpath and target_subdir.
1893
:keyword source_subpath: The relative path specifying the subtree of
1894
other_tree to merge into this_tree.
1895
:keyword target_subdir: The relative path where we want to merge
1896
other_tree into this_tree
1898
# All of the interesting work happens during Merge3Merger.__init__(),
1899
# so we have have to hack in to get our extra parameters set.
1900
self._source_subpath = kwargs.pop('source_subpath')
1901
self._target_subdir = kwargs.pop('target_subdir')
1902
super(MergeIntoMergeType, self).__init__(*args, **kwargs)
1904
def _compute_transform(self):
1905
child_pb = ui.ui_factory.nested_progress_bar()
1907
entries = self._entries_to_incorporate()
1908
entries = list(entries)
1909
for num, (entry, parent_id) in enumerate(entries):
1910
child_pb.update(gettext('Preparing file merge'), num, len(entries))
1911
parent_trans_id = self.tt.trans_id_file_id(parent_id)
1912
trans_id = transform.new_by_entry(self.tt, entry,
1913
parent_trans_id, self.other_tree)
1916
self._finish_computing_transform()
1918
def _entries_to_incorporate(self):
1919
"""Yields pairs of (inventory_entry, new_parent)."""
1920
other_inv = self.other_tree.inventory
1921
subdir_id = other_inv.path2id(self._source_subpath)
1922
if subdir_id is None:
1923
# XXX: The error would be clearer if it gave the URL of the source
1924
# branch, but we don't have a reference to that here.
1925
raise PathNotInTree(self._source_subpath, "Source tree")
1926
subdir = other_inv[subdir_id]
1927
parent_in_target = osutils.dirname(self._target_subdir)
1928
target_id = self.this_tree.inventory.path2id(parent_in_target)
1929
if target_id is None:
1930
raise PathNotInTree(self._target_subdir, "Target tree")
1931
name_in_target = osutils.basename(self._target_subdir)
1932
merge_into_root = subdir.copy()
1933
merge_into_root.name = name_in_target
1934
if self.this_tree.inventory.has_id(merge_into_root.file_id):
1935
# Give the root a new file-id.
1936
# This can happen fairly easily if the directory we are
1937
# incorporating is the root, and both trees have 'TREE_ROOT' as
1938
# their root_id. Users will expect this to Just Work, so we
1939
# change the file-id here.
1940
# Non-root file-ids could potentially conflict too. That's really
1941
# an edge case, so we don't do anything special for those. We let
1942
# them cause conflicts.
1943
merge_into_root.file_id = generate_ids.gen_file_id(name_in_target)
1944
yield (merge_into_root, target_id)
1945
if subdir.kind != 'directory':
1946
# No children, so we are done.
1948
for ignored_path, entry in other_inv.iter_entries_by_dir(subdir_id):
1949
parent_id = entry.parent_id
1950
if parent_id == subdir.file_id:
1951
# The root's parent ID has changed, so make sure children of
1952
# the root refer to the new ID.
1953
parent_id = merge_into_root.file_id
1954
yield (entry, parent_id)
1957
1704
def merge_inner(this_branch, other_tree, base_tree, ignore_zero=False,
1958
1705
backup_files=False,
1959
1706
merge_type=Merge3Merger,
added
removed
bzrlib/merge.py
