248
156
base_tree = local_branch.revision_tree(revision)
250
158
base_tree = branch.revision_tree(revision)
159
temp_path = os.path.join(temp_root, label)
161
return MergeTree(base_tree, temp_path)
254
164
def file_exists(tree, file_id):
255
165
return tree.has_filename(tree.id2path(file_id))
258
def build_working_dir(to_dir):
259
"""Build a working directory in an empty directory.
261
to_dir is a directory containing branch metadata but no working files,
262
typically constructed by cloning an existing branch.
264
This is split out as a special idiomatic case of merge. It could
265
eventually be done by just building the tree directly calling into
266
lower-level code (e.g. constructing a changeset).
268
# RBC 20051019 is this not just 'export' ?
269
# AB Well, export doesn't take care of inventory...
270
this_branch = Branch.open_containing(to_dir)[0]
271
transform_tree(this_branch.working_tree(), this_branch.basis_tree())
274
def transform_tree(from_tree, to_tree, interesting_ids=None):
275
merge_inner(from_tree.branch, to_tree, from_tree, ignore_zero=True,
276
interesting_ids=interesting_ids)
168
class MergeTree(object):
169
def __init__(self, tree, tempdir):
170
object.__init__(self)
171
if hasattr(tree, "basedir"):
172
self.root = tree.basedir
176
self.tempdir = tempdir
177
os.mkdir(os.path.join(self.tempdir, "texts"))
181
return self.tree.__iter__()
183
def __contains__(self, file_id):
184
return file_id in self.tree
186
def get_file(self, file_id):
187
return self.tree.get_file(file_id)
189
def get_file_sha1(self, id):
190
return self.tree.get_file_sha1(id)
192
def id2path(self, file_id):
193
return self.tree.id2path(file_id)
195
def has_id(self, file_id):
196
return self.tree.has_id(file_id)
198
def has_or_had_id(self, file_id):
199
if file_id == self.tree.inventory.root.file_id:
201
return self.tree.inventory.has_id(file_id)
203
def has_or_had_id(self, file_id):
204
if file_id == self.tree.inventory.root.file_id:
206
return self.tree.inventory.has_id(file_id)
208
def readonly_path(self, id):
209
if id not in self.tree:
211
if self.root is not None:
212
return self.tree.abspath(self.tree.id2path(id))
214
if self.tree.inventory[id].kind in ("directory", "root_directory"):
216
if not self.cached.has_key(id):
217
path = os.path.join(self.tempdir, "texts", id)
218
outfile = file(path, "wb")
219
outfile.write(self.tree.get_file(id).read())
220
assert(os.path.exists(path))
221
self.cached[id] = path
222
return self.cached[id]
279
226
def merge(other_revision, base_revision,
280
227
check_clean=True, ignore_zero=False,
281
228
this_dir=None, backup_files=False, merge_type=ApplyMerge3,
282
file_list=None, show_base=False, reprocess=False):
283
230
"""Merge changes into a tree.
286
list(path, revno) Base for three-way merge.
287
If [None, None] then a base will be automatically determined.
233
tuple(path, revision) Base for three-way merge.
289
list(path, revno) Other revision for three-way merge.
235
tuple(path, revision) Other revision for three-way merge.
291
237
Directory to merge changes into; '.' by default.
293
239
If true, this_dir must have no uncommitted changes before the
295
ignore_zero - If true, suppress the "zero conflicts" message when
296
there are no conflicts; should be set when doing something we expect
297
to complete perfectly.
298
file_list - If supplied, merge only changes to selected files.
300
242
All available ancestors of other_revision and base_revision are
301
243
automatically pulled into the branch.
303
The revno may be -1 to indicate the last revision on the branch, which is
306
This function is intended for use from the command line; programmatic
307
clients might prefer to call merge_inner(), which has less magic behavior.
311
this_branch = Branch.open_containing(this_dir)[0]
312
if show_base and not merge_type is ApplyMerge3:
313
raise BzrCommandError("Show-base is not supported for this merge"
314
" type. %s" % merge_type)
315
if reprocess and not merge_type is ApplyMerge3:
316
raise BzrCommandError("Reprocess is not supported for this merge"
317
" type. %s" % merge_type)
318
if reprocess and show_base:
319
raise BzrCommandError("Cannot reprocess and show base.")
320
merger = Merger(this_branch)
321
merger.check_basis(check_clean)
322
merger.set_other(other_revision)
323
merger.set_base(base_revision)
324
if merger.base_rev_id == merger.other_rev_id:
325
note('Nothing to do.')
327
merger.backup_files = backup_files
328
merger.merge_type = merge_type
329
merger.set_interesting_files(file_list)
330
merger.show_base = show_base
331
merger.reprocess = reprocess
332
merger.conflict_handler = MergeConflictHandler(merger.this_tree,
335
ignore_zero=ignore_zero)
336
conflicts = merger.do_merge()
340
def merge_inner(this_branch, other_tree, base_tree, ignore_zero=False,
342
merge_type=ApplyMerge3,
343
interesting_ids=None,
347
interesting_files=None):
348
"""Primary interface for merging.
350
typical use is probably
351
'merge_inner(branch, branch.get_revision_tree(other_revision),
352
branch.get_revision_tree(base_revision))'
354
merger = Merger(this_branch, other_tree, base_tree)
355
merger.backup_files = backup_files
356
merger.merge_type = merge_type
357
merger.interesting_ids = interesting_ids
358
if interesting_files:
359
assert not interesting_ids, ('Only supply interesting_ids'
360
' or interesting_files')
361
merger._set_interesting_files(interesting_files)
362
merger.show_base = show_base
363
merger.reprocess = reprocess
364
merger.conflict_handler = MergeConflictHandler(merger.this_tree, base_tree,
366
ignore_zero=ignore_zero)
367
merger.other_rev_id = other_rev_id
368
merger.other_basis = other_rev_id
369
return merger.do_merge()
372
class Merger(object):
373
def __init__(self, this_branch, other_tree=None, base_tree=None):
374
object.__init__(self)
375
self.this_branch = this_branch
376
self.this_basis = this_branch.last_revision()
377
self.this_rev_id = None
378
self.this_tree = this_branch.working_tree()
379
self.this_revision_tree = None
380
self.this_basis_tree = None
381
self.other_tree = other_tree
382
self.base_tree = base_tree
383
self.ignore_zero = False
384
self.backup_files = False
385
self.interesting_ids = None
386
self.show_base = False
387
self.reprocess = False
388
self.conflict_handler = MergeConflictHandler(self.this_tree, base_tree,
391
def revision_tree(self, revision_id):
392
return self.this_branch.revision_tree(revision_id)
394
def ensure_revision_trees(self):
395
if self.this_revision_tree is None:
396
self.this_basis_tree = self.this_branch.revision_tree(
398
if self.this_basis == self.this_rev_id:
399
self.this_revision_tree = self.this_basis_tree
402
if self.other_rev_id is None:
403
other_basis_tree = self.revision_tree(self.other_basis)
404
changes = compare_trees(self.other_tree, other_basis_tree)
405
if changes.has_changed():
406
raise WorkingTreeNotRevision(self.this_tree)
407
other_rev_id = other_basis
408
self.other_tree = other_basis_tree
411
def file_revisions(self, file_id):
412
self.ensure_revision_trees()
413
def get_id(tree, file_id):
414
revision_id = tree.inventory[file_id].revision
415
assert revision_id is not None
417
if self.this_rev_id is None:
418
if self.this_basis_tree.get_file_sha1(file_id) != \
419
self.this_tree.get_file_sha1(file_id):
420
raise WorkingTreeNotRevision(self.this_tree)
422
trees = (self.this_basis_tree, self.other_tree)
423
return [get_id(tree, file_id) for tree in trees]
426
def merge_factory(self, file_id, base, other):
427
if self.merge_type.history_based:
428
if self.show_base is True:
429
raise BzrError("Cannot show base for hisory-based merges")
430
if self.reprocess is True:
431
raise BzrError("Cannot reprocess history-based merges")
433
t_revid, o_revid = self.file_revisions(file_id)
434
weave = self.this_basis_tree.get_weave(file_id)
435
contents_change = self.merge_type(weave, t_revid, o_revid)
437
if self.show_base is True or self.reprocess is True:
438
contents_change = self.merge_type(file_id, base, other,
439
show_base=self.show_base,
440
reprocess=self.reprocess)
442
contents_change = self.merge_type(file_id, base, other)
443
if self.backup_files:
444
contents_change = BackupBeforeChange(contents_change)
445
return contents_change
447
def check_basis(self, check_clean):
448
if self.this_basis is None:
245
tempdir = tempfile.mkdtemp(prefix="bzr-")
249
this_branch = Branch.open_containing(this_dir)
250
this_rev_id = this_branch.last_revision()
251
if this_rev_id is None:
449
252
raise BzrCommandError("This branch has no commits")
452
if self.this_basis != self.this_rev_id:
254
changes = compare_trees(this_branch.working_tree(),
255
this_branch.basis_tree(), False)
256
if changes.has_changed():
453
257
raise BzrCommandError("Working tree has uncommitted changes.")
455
def compare_basis(self):
456
changes = compare_trees(self.this_branch.working_tree(),
457
self.this_branch.basis_tree(), False)
458
if not changes.has_changed():
459
self.this_rev_id = self.this_basis
461
def set_interesting_files(self, file_list):
463
self._set_interesting_files(file_list)
464
except NotVersionedError, e:
465
raise BzrCommandError("%s is not a source file in any"
468
def _set_interesting_files(self, file_list):
469
"""Set the list of interesting ids from a list of files."""
470
if file_list is None:
471
self.interesting_ids = None
474
interesting_ids = set()
475
for fname in file_list:
476
path = self.this_tree.relpath(fname)
478
for tree in (self.this_tree, self.base_tree, self.other_tree):
479
file_id = tree.inventory.path2id(path)
480
if file_id is not None:
481
interesting_ids.add(file_id)
484
raise NotVersionedError(path=fname)
485
self.interesting_ids = interesting_ids
487
def set_pending(self):
488
if not self.base_is_ancestor:
490
if self.other_rev_id is None:
492
if self.other_rev_id in self.this_branch.get_ancestry(self.this_basis):
494
self.this_branch.working_tree().add_pending_merge(self.other_rev_id)
496
def set_other(self, other_revision):
497
other_branch, self.other_tree = get_tree(other_revision,
258
other_branch, other_tree = get_tree(other_revision, tempdir, "other",
499
260
if other_revision[1] == -1:
500
self.other_rev_id = other_branch.last_revision()
501
if self.other_rev_id is None:
261
other_rev_id = other_branch.last_revision()
262
if other_rev_id is None:
502
263
raise NoCommits(other_branch)
503
self.other_basis = self.other_rev_id
264
other_basis = other_rev_id
504
265
elif other_revision[1] is not None:
505
self.other_rev_id = other_branch.get_rev_id(other_revision[1])
506
self.other_basis = self.other_rev_id
266
other_rev_id = other_branch.get_rev_id(other_revision[1])
267
other_basis = other_rev_id
508
self.other_rev_id = None
509
self.other_basis = other_branch.last_revision()
510
if self.other_basis is None:
270
other_basis = other_branch.last_revision()
271
if other_basis is None:
511
272
raise NoCommits(other_branch)
512
fetch(from_branch=other_branch, to_branch=self.this_branch,
513
last_revision=self.other_basis)
515
def set_base(self, base_revision):
516
mutter("doing merge() with no base_revision specified")
517
273
if base_revision == [None, None]:
519
self.base_rev_id = common_ancestor(self.this_basis,
275
base_rev_id = common_ancestor(this_rev_id, other_basis,
522
277
except NoCommonAncestor:
523
278
raise UnrelatedBranches()
524
self.base_tree = get_revid_tree(self.this_branch, self.base_rev_id,
526
self.base_is_ancestor = True
279
base_tree = get_revid_tree(this_branch, base_rev_id, tempdir,
281
base_is_ancestor = True
528
base_branch, self.base_tree = get_tree(base_revision)
283
base_branch, base_tree = get_tree(base_revision, tempdir, "base")
529
284
if base_revision[1] == -1:
530
self.base_rev_id = base_branch.last_revision()
285
base_rev_id = base_branch.last_revision()
531
286
elif base_revision[1] is None:
532
self.base_rev_id = None
534
self.base_rev_id = base_branch.get_rev_id(base_revision[1])
535
fetch(from_branch=base_branch, to_branch=self.this_branch)
536
self.base_is_ancestor = is_ancestor(self.this_basis,
541
def get_inventory(tree):
542
return tree.inventory
544
inv_changes = merge_flex(self.this_tree, self.base_tree,
546
generate_changeset, get_inventory,
547
self.conflict_handler,
548
merge_factory=self.merge_factory,
549
interesting_ids=self.interesting_ids)
552
for id, path in inv_changes.iteritems():
557
assert path.startswith('.' + '/') or path.startswith('.' + '\\'), "path is %s" % path
559
adjust_ids.append((path, id))
560
if len(adjust_ids) > 0:
561
self.this_branch.working_tree().set_inventory(self.regen_inventory(adjust_ids))
562
conflicts = self.conflict_handler.conflicts
563
self.conflict_handler.finalize()
566
def regen_inventory(self, new_entries):
567
old_entries = self.this_branch.working_tree().read_working_inventory()
571
for path, file_id in new_entries:
574
new_entries_map[file_id] = path
576
def id2path(file_id):
577
path = new_entries_map.get(file_id)
580
entry = old_entries[file_id]
581
if entry.parent_id is None:
583
return pathjoin(id2path(entry.parent_id), entry.name)
585
for file_id in old_entries:
586
entry = old_entries[file_id]
587
path = id2path(file_id)
588
new_inventory[file_id] = (path, file_id, entry.parent_id,
590
by_path[path] = file_id
595
for path, file_id in new_entries:
597
del new_inventory[file_id]
600
new_path_list.append((path, file_id))
601
if file_id not in old_entries:
603
# Ensure no file is added before its parent
605
for path, file_id in new_path_list:
609
parent = by_path[os.path.dirname(path)]
610
abspath = pathjoin(self.this_tree.basedir, path)
611
kind = bzrlib.osutils.file_kind(abspath)
612
new_inventory[file_id] = (path, file_id, parent, kind)
613
by_path[path] = file_id
615
# Get a list in insertion order
616
new_inventory_list = new_inventory.values()
617
mutter ("""Inventory regeneration:
618
old length: %i insertions: %i deletions: %i new_length: %i"""\
619
% (len(old_entries), insertions, deletions,
620
len(new_inventory_list)))
621
assert len(new_inventory_list) == len(old_entries) + insertions\
623
new_inventory_list.sort()
624
return new_inventory_list
289
base_rev_id = base_branch.get_rev_id(base_revision[1])
290
fetch(from_branch=base_branch, to_branch=this_branch)
291
base_is_ancestor = is_ancestor(this_rev_id, base_rev_id,
293
if file_list is None:
294
interesting_ids = None
296
interesting_ids = set()
297
this_tree = this_branch.working_tree()
298
for fname in file_list:
299
path = this_branch.relpath(fname)
301
for tree in (this_tree, base_tree.tree, other_tree.tree):
302
file_id = tree.inventory.path2id(path)
303
if file_id is not None:
304
interesting_ids.add(file_id)
307
raise BzrCommandError("%s is not a source file in any"
309
merge_inner(this_branch, other_tree, base_tree, tempdir,
310
ignore_zero=ignore_zero, backup_files=backup_files,
311
merge_type=merge_type, interesting_ids=interesting_ids)
312
if base_is_ancestor and other_rev_id is not None\
313
and other_rev_id not in this_branch.revision_history():
314
this_branch.add_pending_merge(other_rev_id)
316
shutil.rmtree(tempdir)
319
def set_interesting(inventory_a, inventory_b, interesting_ids):
320
"""Mark files whose ids are in interesting_ids as interesting
322
for inventory in (inventory_a, inventory_b):
323
for path, source_file in inventory.iteritems():
324
source_file.interesting = source_file.id in interesting_ids
327
def generate_cset_optimized(tree_a, tree_b, interesting_ids=None):
328
"""Generate a changeset. If interesting_ids is supplied, only changes
329
to those files will be shown. Metadata changes are stripped.
331
cset = generate_changeset(tree_a, tree_b, interesting_ids)
332
for entry in cset.entries.itervalues():
333
entry.metadata_change = None
337
def merge_inner(this_branch, other_tree, base_tree, tempdir,
338
ignore_zero=False, merge_type=ApplyMerge3, backup_files=False,
339
interesting_ids=None):
341
def merge_factory(file_id, base, other):
342
contents_change = merge_type(file_id, base, other)
344
contents_change = BackupBeforeChange(contents_change)
345
return contents_change
347
this_tree = get_tree((this_branch.base, None), tempdir, "this")[1]
349
def get_inventory(tree):
350
return tree.tree.inventory
352
inv_changes = merge_flex(this_tree, base_tree, other_tree,
353
generate_cset_optimized, get_inventory,
354
MergeConflictHandler(ignore_zero=ignore_zero),
355
merge_factory=merge_factory,
356
interesting_ids=interesting_ids)
359
for id, path in inv_changes.iteritems():
364
assert path.startswith('.' + os.sep), "path is %s" % path
366
adjust_ids.append((path, id))
367
if len(adjust_ids) > 0:
368
this_branch.set_inventory(regen_inventory(this_branch, this_tree.root,
372
def regen_inventory(this_branch, root, new_entries):
373
old_entries = this_branch.read_working_inventory()
377
for path, file_id in new_entries:
380
new_entries_map[file_id] = path
382
def id2path(file_id):
383
path = new_entries_map.get(file_id)
386
entry = old_entries[file_id]
387
if entry.parent_id is None:
389
return os.path.join(id2path(entry.parent_id), entry.name)
391
for file_id in old_entries:
392
entry = old_entries[file_id]
393
path = id2path(file_id)
394
new_inventory[file_id] = (path, file_id, entry.parent_id, entry.kind)
395
by_path[path] = file_id
400
for path, file_id in new_entries:
402
del new_inventory[file_id]
405
new_path_list.append((path, file_id))
406
if file_id not in old_entries:
408
# Ensure no file is added before its parent
410
for path, file_id in new_path_list:
414
parent = by_path[os.path.dirname(path)]
415
kind = bzrlib.osutils.file_kind(os.path.join(root, path))
416
new_inventory[file_id] = (path, file_id, parent, kind)
417
by_path[path] = file_id
419
# Get a list in insertion order
420
new_inventory_list = new_inventory.values()
421
mutter ("""Inventory regeneration:
422
old length: %i insertions: %i deletions: %i new_length: %i"""\
423
% (len(old_entries), insertions, deletions, len(new_inventory_list)))
424
assert len(new_inventory_list) == len(old_entries) + insertions - deletions
425
new_inventory_list.sort()
426
return new_inventory_list
626
428
merge_types = { "merge3": (ApplyMerge3, "Native diff3-style merge"),
627
"diff3": (Diff3Merge, "Merge using external diff3"),
628
'weave': (WeaveMerge, "Weave-based merge")
429
"diff3": (Diff3Merge, "Merge using external diff3")