176
def rem_contents_conflict(self, filename, this_contents, base_contents):
177
base_contents(filename+".BASE", self, False)
178
this_contents(filename+".THIS", self, False)
179
return ReplaceContents(this_contents, None)
181
def rem_contents_conflict(self, filename, this_contents, base_contents):
182
base_contents(filename+".BASE", self, False)
183
this_contents(filename+".THIS", self, False)
184
self.conflict("Other branch deleted locally modified file %s" %
186
return ReplaceContents(this_contents, None)
188
def abs_this_path(self, file_id):
189
"""Return the absolute path for a file_id in the this tree."""
190
return self.this_tree.id2abspath(file_id)
192
def add_missing_parents(self, file_id, tree):
193
"""If some of the parents for file_id are missing, add them."""
194
entry = tree.inventory[file_id]
195
if entry.parent_id not in self.this_tree:
196
return self.create_all_missing(entry.parent_id, tree)
198
return self.abs_this_path(entry.parent_id)
200
def create_all_missing(self, file_id, tree):
201
"""Add contents for a file_id and all its parents to a tree."""
202
entry = tree.inventory[file_id]
203
if entry.parent_id is not None and entry.parent_id not in self.this_tree:
204
abspath = self.create_all_missing(entry.parent_id, tree)
206
abspath = self.abs_this_path(entry.parent_id)
207
entry_path = os.path.join(abspath, entry.name)
208
if not os.path.isdir(entry_path):
209
self.create(file_id, entry_path, tree)
212
def create(self, file_id, path, tree, reverse=False):
213
"""Uses tree data to create a filesystem object for the file_id"""
214
from changeset import get_contents
215
get_contents(tree, file_id)(path, self, reverse)
217
def missing_for_merge(self, file_id, other_path):
218
"""The file_id doesn't exist in THIS, but does in OTHER and BASE"""
219
self.conflict("Other branch modified locally deleted file %s" %
221
parent_dir = self.add_missing_parents(file_id, self.other_tree)
222
stem = os.path.join(parent_dir, os.path.basename(other_path))
223
self.create(file_id, stem+".OTHER", self.other_tree)
224
self.create(file_id, stem+".BASE", self.base_tree)
226
def threeway_contents_conflict(filename, this_contents, base_contents,
228
self.conflict("Three-way conflict merging %s" % filename)
130
230
def finalize(self):
131
231
if not self.ignore_zero:
132
print "%d conflicts encountered.\n" % self.conflicts
232
note("%d conflicts encountered.\n", self.conflicts)
134
def get_tree(treespec, temp_root, label, local_branch=None):
234
def get_tree(treespec, local_branch=None):
135
235
location, revno = treespec
136
branch = find_branch(location)
236
branch = Branch.open_containing(location)[0]
137
237
if revno is None:
139
239
elif revno == -1:
140
revision = branch.last_patch()
240
revision = branch.last_revision()
142
revision = branch.lookup_revision(revno)
143
return branch, get_revid_tree(branch, revision, temp_root, label,
242
revision = branch.get_rev_id(revno)
244
revision = NULL_REVISION
245
return branch, get_revid_tree(branch, revision, local_branch)
146
def get_revid_tree(branch, revision, temp_root, label, local_branch):
247
def get_revid_tree(branch, revision, local_branch):
147
248
if revision is None:
148
249
base_tree = branch.working_tree()
152
253
base_tree = local_branch.revision_tree(revision)
154
255
base_tree = branch.revision_tree(revision)
155
temp_path = os.path.join(temp_root, label)
157
return MergeTree(base_tree, temp_path)
160
259
def file_exists(tree, file_id):
161
260
return tree.has_filename(tree.id2path(file_id))
164
class MergeTree(object):
165
def __init__(self, tree, tempdir):
166
object.__init__(self)
167
if hasattr(tree, "basedir"):
168
self.root = tree.basedir
172
self.tempdir = tempdir
173
os.mkdir(os.path.join(self.tempdir, "texts"))
177
return self.tree.__iter__()
179
def __contains__(self, file_id):
180
return file_id in self.tree
182
def get_file(self, file_id):
183
return self.tree.get_file(file_id)
185
def get_file_sha1(self, id):
186
return self.tree.get_file_sha1(id)
188
def id2path(self, file_id):
189
return self.tree.id2path(file_id)
191
def has_id(self, file_id):
192
return self.tree.has_id(file_id)
194
def has_or_had_id(self, file_id):
195
if file_id == self.tree.inventory.root.file_id:
197
return self.tree.inventory.has_id(file_id)
199
def has_or_had_id(self, file_id):
200
if file_id == self.tree.inventory.root.file_id:
202
return self.tree.inventory.has_id(file_id)
204
def readonly_path(self, id):
205
if id not in self.tree:
207
if self.root is not None:
208
return self.tree.abspath(self.tree.id2path(id))
210
if self.tree.inventory[id].kind in ("directory", "root_directory"):
212
if not self.cached.has_key(id):
213
path = os.path.join(self.tempdir, "texts", id)
214
outfile = file(path, "wb")
215
outfile.write(self.tree.get_file(id).read())
216
assert(os.path.exists(path))
217
self.cached[id] = path
218
return self.cached[id]
263
def build_working_dir(to_dir):
264
"""Build a working directory in an empty directory.
266
to_dir is a directory containing branch metadata but no working files,
267
typically constructed by cloning an existing branch.
269
This is split out as a special idiomatic case of merge. It could
270
eventually be done by just building the tree directly calling into
271
lower-level code (e.g. constructing a changeset).
273
# RBC 20051019 is this not just 'export' ?
274
# AB Well, export doesn't take care of inventory...
275
this_branch = Branch.open_containing(to_dir)[0]
276
transform_tree(this_branch.working_tree(), this_branch.basis_tree())
279
def transform_tree(from_tree, to_tree, interesting_ids=None):
280
merge_inner(from_tree.branch, to_tree, from_tree, ignore_zero=True,
281
interesting_ids=interesting_ids)
222
284
def merge(other_revision, base_revision,
223
285
check_clean=True, ignore_zero=False,
224
286
this_dir=None, backup_files=False, merge_type=ApplyMerge3,
287
file_list=None, show_base=False, reprocess=False):
226
288
"""Merge changes into a tree.
229
tuple(path, revision) Base for three-way merge.
291
list(path, revno) Base for three-way merge.
292
If [None, None] then a base will be automatically determined.
231
tuple(path, revision) Other revision for three-way merge.
294
list(path, revno) Other revision for three-way merge.
233
296
Directory to merge changes into; '.' by default.
235
298
If true, this_dir must have no uncommitted changes before the
237
all available ancestors of other_revision and base_revision are
300
ignore_zero - If true, suppress the "zero conflicts" message when
301
there are no conflicts; should be set when doing something we expect
302
to complete perfectly.
303
file_list - If supplied, merge only changes to selected files.
305
All available ancestors of other_revision and base_revision are
238
306
automatically pulled into the branch.
308
The revno may be -1 to indicate the last revision on the branch, which is
311
This function is intended for use from the command line; programmatic
312
clients might prefer to call merge_inner(), which has less magic behavior.
240
from bzrlib.revision import common_ancestor, MultipleRevisionSources
241
from bzrlib.errors import NoSuchRevision
242
tempdir = tempfile.mkdtemp(prefix="bzr-")
246
this_branch = find_branch(this_dir)
247
this_rev_id = this_branch.last_patch()
248
if this_rev_id is None:
316
this_branch = Branch.open_containing(this_dir)[0]
317
if show_base and not merge_type is ApplyMerge3:
318
raise BzrCommandError("Show-base is not supported for this merge"
319
" type. %s" % merge_type)
320
if reprocess and not merge_type is ApplyMerge3:
321
raise BzrCommandError("Reprocess is not supported for this merge"
322
" type. %s" % merge_type)
323
if reprocess and show_base:
324
raise BzrCommandError("Cannot reprocess and show base.")
325
merger = Merger(this_branch)
326
merger.check_basis(check_clean)
327
merger.set_other(other_revision)
328
merger.set_base(base_revision)
329
if merger.base_rev_id == merger.other_rev_id:
330
note('Nothing to do.')
332
merger.backup_files = backup_files
333
merger.merge_type = merge_type
334
merger.set_interesting_files(file_list)
335
merger.show_base = show_base
336
merger.reprocess = reprocess
337
merger.conflict_handler = MergeConflictHandler(merger.this_tree,
340
ignore_zero=ignore_zero)
341
conflicts = merger.do_merge()
345
def merge_inner(this_branch, other_tree, base_tree, ignore_zero=False,
347
merge_type=ApplyMerge3,
348
interesting_ids=None,
352
interesting_files=None):
353
"""Primary interface for merging.
355
typical use is probably
356
'merge_inner(branch, branch.get_revision_tree(other_revision),
357
branch.get_revision_tree(base_revision))'
359
merger = Merger(this_branch, other_tree, base_tree)
360
merger.backup_files = backup_files
361
merger.merge_type = merge_type
362
merger.interesting_ids = interesting_ids
363
if interesting_files:
364
assert not interesting_ids, ('Only supply interesting_ids'
365
' or interesting_files')
366
merger._set_interesting_files(interesting_files)
367
merger.show_base = show_base
368
merger.reprocess = reprocess
369
merger.conflict_handler = MergeConflictHandler(merger.this_tree, base_tree,
371
ignore_zero=ignore_zero)
372
merger.other_rev_id = other_rev_id
373
merger.other_basis = other_rev_id
374
return merger.do_merge()
377
class Merger(object):
378
def __init__(self, this_branch, other_tree=None, base_tree=None):
379
object.__init__(self)
380
self.this_branch = this_branch
381
self.this_basis = this_branch.last_revision()
382
self.this_rev_id = None
383
self.this_tree = this_branch.working_tree()
384
self.this_revision_tree = None
385
self.this_basis_tree = None
386
self.other_tree = other_tree
387
self.base_tree = base_tree
388
self.ignore_zero = False
389
self.backup_files = False
390
self.interesting_ids = None
391
self.show_base = False
392
self.reprocess = False
393
self.conflict_handler = MergeConflictHandler(self.this_tree, base_tree,
396
def revision_tree(self, revision_id):
397
return self.this_branch.revision_tree(revision_id)
399
def ensure_revision_trees(self):
400
if self.this_revision_tree is None:
401
self.this_basis_tree = self.this_branch.revision_tree(
403
if self.this_basis == self.this_rev_id:
404
self.this_revision_tree = self.this_basis_tree
407
if self.other_rev_id is None:
408
other_basis_tree = self.revision_tree(self.other_basis)
409
changes = compare_trees(self.other_tree, other_basis_tree)
410
if changes.has_changed():
411
raise WorkingTreeNotRevision(self.this_tree)
412
other_rev_id = other_basis
413
self.other_tree = other_basis_tree
416
def file_revisions(self, file_id):
417
self.ensure_revision_trees()
418
def get_id(tree, file_id):
419
revision_id = tree.inventory[file_id].revision
420
assert revision_id is not None
422
if self.this_rev_id is None:
423
if self.this_basis_tree.get_file_sha1(file_id) != \
424
self.this_tree.get_file_sha1(file_id):
425
raise WorkingTreeNotRevision(self.this_tree)
427
trees = (self.this_basis_tree, self.other_tree)
428
return [get_id(tree, file_id) for tree in trees]
431
def merge_factory(self, file_id, base, other):
432
if self.merge_type.history_based:
433
if self.show_base is True:
434
raise BzrError("Cannot show base for hisory-based merges")
435
if self.reprocess is True:
436
raise BzrError("Cannot reprocess history-based merges")
438
t_revid, o_revid = self.file_revisions(file_id)
439
weave = self.this_basis_tree.get_weave(file_id)
440
contents_change = self.merge_type(weave, t_revid, o_revid)
442
if self.show_base is True or self.reprocess is True:
443
contents_change = self.merge_type(file_id, base, other,
444
show_base=self.show_base,
445
reprocess=self.reprocess)
447
contents_change = self.merge_type(file_id, base, other)
448
if self.backup_files:
449
contents_change = BackupBeforeChange(contents_change)
450
return contents_change
452
def check_basis(self, check_clean):
453
if self.this_basis is None:
249
454
raise BzrCommandError("This branch has no commits")
251
changes = compare_trees(this_branch.working_tree(),
252
this_branch.basis_tree(), False)
253
if changes.has_changed():
457
if self.this_basis != self.this_rev_id:
254
458
raise BzrCommandError("Working tree has uncommitted changes.")
255
other_branch, other_tree = get_tree(other_revision, tempdir, "other",
460
def compare_basis(self):
461
changes = compare_trees(self.this_branch.working_tree(),
462
self.this_branch.basis_tree(), False)
463
if not changes.has_changed():
464
self.this_rev_id = self.this_basis
466
def set_interesting_files(self, file_list):
468
self._set_interesting_files(file_list)
469
except NotVersionedError, e:
470
raise BzrCommandError("%s is not a source file in any"
473
def _set_interesting_files(self, file_list):
474
"""Set the list of interesting ids from a list of files."""
475
if file_list is None:
476
self.interesting_ids = None
479
interesting_ids = set()
480
for fname in file_list:
481
path = self.this_tree.relpath(fname)
483
for tree in (self.this_tree, self.base_tree, self.other_tree):
484
file_id = tree.inventory.path2id(path)
485
if file_id is not None:
486
interesting_ids.add(file_id)
489
raise NotVersionedError(path=fname)
490
self.interesting_ids = interesting_ids
492
def set_pending(self):
493
if not self.base_is_ancestor:
495
if self.other_rev_id is None:
497
if self.other_rev_id in self.this_branch.get_ancestry(self.this_basis):
499
self.this_branch.working_tree().add_pending_merge(self.other_rev_id)
501
def set_other(self, other_revision):
502
other_branch, self.other_tree = get_tree(other_revision,
257
504
if other_revision[1] == -1:
258
other_rev_id = other_branch.last_patch()
259
other_basis = other_rev_id
505
self.other_rev_id = other_branch.last_revision()
506
if self.other_rev_id is None:
507
raise NoCommits(other_branch)
508
self.other_basis = self.other_rev_id
260
509
elif other_revision[1] is not None:
261
other_rev_id = other_branch.lookup_revision(other_revision[1])
262
other_basis = other_rev_id
510
self.other_rev_id = other_branch.get_rev_id(other_revision[1])
511
self.other_basis = self.other_rev_id
265
other_basis = other_branch.last_patch()
513
self.other_rev_id = None
514
self.other_basis = other_branch.last_revision()
515
if self.other_basis is None:
516
raise NoCommits(other_branch)
517
fetch(from_branch=other_branch, to_branch=self.this_branch,
518
last_revision=self.other_basis)
520
def set_base(self, base_revision):
521
mutter("doing merge() with no base_revision specified")
266
522
if base_revision == [None, None]:
267
base_rev_id = common_ancestor(this_rev_id, other_basis,
269
if base_rev_id is None:
524
self.base_rev_id = common_ancestor(self.this_basis,
527
except NoCommonAncestor:
270
528
raise UnrelatedBranches()
271
base_tree = get_revid_tree(this_branch, base_rev_id, tempdir,
273
base_is_ancestor = True
529
self.base_tree = get_revid_tree(self.this_branch, self.base_rev_id,
531
self.base_is_ancestor = True
275
base_branch, base_tree = get_tree(base_revision, tempdir, "base")
533
base_branch, self.base_tree = get_tree(base_revision)
276
534
if base_revision[1] == -1:
277
base_rev_id = base_branch.last_patch()
535
self.base_rev_id = base_branch.last_revision()
278
536
elif base_revision[1] is None:
281
base_rev_id = base_branch.lookup_revision(base_revision[1])
282
if base_rev_id is not None:
283
base_is_ancestor = is_ancestor(this_rev_id, base_rev_id,
284
MultipleRevisionSources(this_branch,
287
base_is_ancestor = False
288
if file_list is None:
289
interesting_ids = None
291
interesting_ids = set()
292
this_tree = this_branch.working_tree()
293
for fname in file_list:
294
path = this_branch.relpath(fname)
296
for tree in (this_tree, base_tree.tree, other_tree.tree):
297
file_id = tree.inventory.path2id(path)
298
if file_id is not None:
299
interesting_ids.add(file_id)
302
raise BzrCommandError("%s is not a source file in any"
304
merge_inner(this_branch, other_tree, base_tree, tempdir,
305
ignore_zero=ignore_zero, backup_files=backup_files,
306
merge_type=merge_type, interesting_ids=interesting_ids)
307
if base_is_ancestor and other_rev_id is not None\
308
and other_rev_id not in this_branch.revision_history():
309
this_branch.add_pending_merge(other_rev_id)
311
shutil.rmtree(tempdir)
314
def set_interesting(inventory_a, inventory_b, interesting_ids):
315
"""Mark files whose ids are in interesting_ids as interesting
317
for inventory in (inventory_a, inventory_b):
318
for path, source_file in inventory.iteritems():
319
source_file.interesting = source_file.id in interesting_ids
322
def generate_cset_optimized(tree_a, tree_b, interesting_ids=None):
323
"""Generate a changeset. If interesting_ids is supplied, only changes
324
to those files will be shown. Metadata changes are stripped.
326
cset = generate_changeset(tree_a, tree_b, interesting_ids)
327
for entry in cset.entries.itervalues():
328
entry.metadata_change = None
332
def merge_inner(this_branch, other_tree, base_tree, tempdir,
333
ignore_zero=False, merge_type=ApplyMerge3, backup_files=False,
334
interesting_ids=None):
336
def merge_factory(file_id, base, other):
337
contents_change = merge_type(file_id, base, other)
339
contents_change = BackupBeforeChange(contents_change)
340
return contents_change
342
this_tree = get_tree((this_branch.base, None), tempdir, "this")[1]
344
def get_inventory(tree):
345
return tree.tree.inventory
347
inv_changes = merge_flex(this_tree, base_tree, other_tree,
348
generate_cset_optimized, get_inventory,
349
MergeConflictHandler(base_tree.root,
350
ignore_zero=ignore_zero),
351
merge_factory=merge_factory,
352
interesting_ids=interesting_ids)
355
for id, path in inv_changes.iteritems():
360
assert path.startswith('./'), "path is %s" % path
362
adjust_ids.append((path, id))
363
if len(adjust_ids) > 0:
364
this_branch.set_inventory(regen_inventory(this_branch, this_tree.root,
368
def regen_inventory(this_branch, root, new_entries):
369
old_entries = this_branch.read_working_inventory()
373
for path, file_id in new_entries:
376
new_entries_map[file_id] = path
378
def id2path(file_id):
379
path = new_entries_map.get(file_id)
382
entry = old_entries[file_id]
383
if entry.parent_id is None:
385
return os.path.join(id2path(entry.parent_id), entry.name)
387
for file_id in old_entries:
388
entry = old_entries[file_id]
389
path = id2path(file_id)
390
new_inventory[file_id] = (path, file_id, entry.parent_id, entry.kind)
391
by_path[path] = file_id
396
for path, file_id in new_entries:
398
del new_inventory[file_id]
401
new_path_list.append((path, file_id))
402
if file_id not in old_entries:
404
# Ensure no file is added before its parent
406
for path, file_id in new_path_list:
410
parent = by_path[os.path.dirname(path)]
411
kind = bzrlib.osutils.file_kind(os.path.join(root, path))
412
new_inventory[file_id] = (path, file_id, parent, kind)
413
by_path[path] = file_id
415
# Get a list in insertion order
416
new_inventory_list = new_inventory.values()
417
mutter ("""Inventory regeneration:
418
old length: %i insertions: %i deletions: %i new_length: %i"""\
419
% (len(old_entries), insertions, deletions, len(new_inventory_list)))
420
assert len(new_inventory_list) == len(old_entries) + insertions - deletions
421
new_inventory_list.sort()
422
return new_inventory_list
537
self.base_rev_id = None
539
self.base_rev_id = base_branch.get_rev_id(base_revision[1])
540
fetch(from_branch=base_branch, to_branch=self.this_branch)
541
self.base_is_ancestor = is_ancestor(self.this_basis,
546
def get_inventory(tree):
547
return tree.inventory
549
inv_changes = merge_flex(self.this_tree, self.base_tree,
551
generate_changeset, get_inventory,
552
self.conflict_handler,
553
merge_factory=self.merge_factory,
554
interesting_ids=self.interesting_ids)
557
for id, path in inv_changes.iteritems():
562
assert path.startswith('.' + os.sep), "path is %s" % path
564
adjust_ids.append((path, id))
565
if len(adjust_ids) > 0:
566
self.this_branch.working_tree().set_inventory(self.regen_inventory(adjust_ids))
567
conflicts = self.conflict_handler.conflicts
568
self.conflict_handler.finalize()
571
def regen_inventory(self, new_entries):
572
old_entries = self.this_branch.working_tree().read_working_inventory()
576
for path, file_id in new_entries:
579
new_entries_map[file_id] = path
581
def id2path(file_id):
582
path = new_entries_map.get(file_id)
585
entry = old_entries[file_id]
586
if entry.parent_id is None:
588
return os.path.join(id2path(entry.parent_id), entry.name)
590
for file_id in old_entries:
591
entry = old_entries[file_id]
592
path = id2path(file_id)
593
new_inventory[file_id] = (path, file_id, entry.parent_id,
595
by_path[path] = file_id
600
for path, file_id in new_entries:
602
del new_inventory[file_id]
605
new_path_list.append((path, file_id))
606
if file_id not in old_entries:
608
# Ensure no file is added before its parent
610
for path, file_id in new_path_list:
614
parent = by_path[os.path.dirname(path)]
615
abspath = os.path.join(self.this_tree.basedir, path)
616
kind = bzrlib.osutils.file_kind(abspath)
617
new_inventory[file_id] = (path, file_id, parent, kind)
618
by_path[path] = file_id
620
# Get a list in insertion order
621
new_inventory_list = new_inventory.values()
622
mutter ("""Inventory regeneration:
623
old length: %i insertions: %i deletions: %i new_length: %i"""\
624
% (len(old_entries), insertions, deletions,
625
len(new_inventory_list)))
626
assert len(new_inventory_list) == len(old_entries) + insertions\
628
new_inventory_list.sort()
629
return new_inventory_list
424
631
merge_types = { "merge3": (ApplyMerge3, "Native diff3-style merge"),
425
"diff3": (Diff3Merge, "Merge using external diff3")
632
"diff3": (Diff3Merge, "Merge using external diff3"),
633
'weave': (WeaveMerge, "Weave-based merge")