102
81
Base directory/url of the branch.
83
hooks: An instance of BranchHooks.
85
# this is really an instance variable - FIXME move it there
106
89
def __init__(self, *ignored, **ignored_too):
107
raise NotImplementedError('The Branch class is abstract')
110
def open_downlevel(base):
111
"""Open a branch which may be of an old format.
113
Only local branches are supported."""
114
return BzrBranch(get_transport(base), relax_version_check=True)
118
"""Open an existing branch, rooted at 'base' (url)"""
119
t = get_transport(base)
120
mutter("trying to open %r with transport %r", base, t)
124
def open_containing(url):
90
self.tags = self._format.make_tags(self)
91
self._revision_history_cache = None
92
self._revision_id_to_revno_cache = None
93
self._partial_revision_id_to_revno_cache = {}
94
self._partial_revision_history_cache = []
95
self._last_revision_info_cache = None
96
self._merge_sorted_revisions_cache = None
98
hooks = Branch.hooks['open']
102
def _open_hook(self):
103
"""Called by init to allow simpler extension of the base class."""
105
def _activate_fallback_location(self, url):
106
"""Activate the branch/repository from url as a fallback repository."""
107
repo = self._get_fallback_repository(url)
108
if repo.has_same_location(self.repository):
109
raise errors.UnstackableLocationError(self.base, url)
110
self.repository.add_fallback_repository(repo)
112
def break_lock(self):
113
"""Break a lock if one is present from another instance.
115
Uses the ui factory to ask for confirmation if the lock may be from
118
This will probe the repository for its lock as well.
120
self.control_files.break_lock()
121
self.repository.break_lock()
122
master = self.get_master_branch()
123
if master is not None:
126
def _check_stackable_repo(self):
127
if not self.repository._format.supports_external_lookups:
128
raise errors.UnstackableRepositoryFormat(self.repository._format,
129
self.repository.base)
131
def _extend_partial_history(self, stop_index=None, stop_revision=None):
132
"""Extend the partial history to include a given index
134
If a stop_index is supplied, stop when that index has been reached.
135
If a stop_revision is supplied, stop when that revision is
136
encountered. Otherwise, stop when the beginning of history is
139
:param stop_index: The index which should be present. When it is
140
present, history extension will stop.
141
:param stop_revision: The revision id which should be present. When
142
it is encountered, history extension will stop.
144
if len(self._partial_revision_history_cache) == 0:
145
self._partial_revision_history_cache = [self.last_revision()]
146
repository._iter_for_revno(
147
self.repository, self._partial_revision_history_cache,
148
stop_index=stop_index, stop_revision=stop_revision)
149
if self._partial_revision_history_cache[-1] == _mod_revision.NULL_REVISION:
150
self._partial_revision_history_cache.pop()
152
def _get_check_refs(self):
153
"""Get the references needed for check().
157
revid = self.last_revision()
158
return [('revision-existence', revid), ('lefthand-distance', revid)]
161
def open(base, _unsupported=False, possible_transports=None):
162
"""Open the branch rooted at base.
164
For instance, if the branch is at URL/.bzr/branch,
165
Branch.open(URL) -> a Branch instance.
167
control = bzrdir.BzrDir.open(base, _unsupported,
168
possible_transports=possible_transports)
169
return control.open_branch(_unsupported)
172
def open_from_transport(transport, _unsupported=False):
173
"""Open the branch rooted at transport"""
174
control = bzrdir.BzrDir.open_from_transport(transport, _unsupported)
175
return control.open_branch(_unsupported)
178
def open_containing(url, possible_transports=None):
125
179
"""Open an existing branch which contains url.
127
181
This probes for a branch at url, and searches upwards from there.
129
183
Basically we keep looking up until we find the control directory or
130
184
run into the root. If there isn't one, raises NotBranchError.
185
If there is one and it is either an unrecognised format or an unsupported
186
format, UnknownFormatError or UnsupportedFormatError are raised.
131
187
If there is one, it is returned, along with the unused portion of url.
133
t = get_transport(url)
189
control, relpath = bzrdir.BzrDir.open_containing(url,
191
return control.open_branch(), relpath
193
def _push_should_merge_tags(self):
194
"""Should _basic_push merge this branch's tags into the target?
196
The default implementation returns False if this branch has no tags,
197
and True the rest of the time. Subclasses may override this.
199
return self.supports_tags() and self.tags.get_tag_dict()
201
def get_config(self):
202
return BranchConfig(self)
204
def _get_config(self):
205
"""Get the concrete config for just the config in this branch.
207
This is not intended for client use; see Branch.get_config for the
212
:return: An object supporting get_option and set_option.
214
raise NotImplementedError(self._get_config)
216
def _get_fallback_repository(self, url):
217
"""Get the repository we fallback to at url."""
218
url = urlutils.join(self.base, url)
219
a_bzrdir = bzrdir.BzrDir.open(url,
220
possible_transports=[self.bzrdir.root_transport])
221
return a_bzrdir.open_branch().repository
223
def _get_tags_bytes(self):
224
"""Get the bytes of a serialised tags dict.
226
Note that not all branches support tags, nor do all use the same tags
227
logic: this method is specific to BasicTags. Other tag implementations
228
may use the same method name and behave differently, safely, because
229
of the double-dispatch via
230
format.make_tags->tags_instance->get_tags_dict.
232
:return: The bytes of the tags file.
233
:seealso: Branch._set_tags_bytes.
235
return self._transport.get_bytes('tags')
237
def _get_nick(self, local=False, possible_transports=None):
238
config = self.get_config()
239
# explicit overrides master, but don't look for master if local is True
240
if not local and not config.has_explicit_nickname():
136
return BzrBranch(t), t.relpath(url)
137
except NotBranchError:
139
new_t = t.clone('..')
140
if new_t.base == t.base:
141
# reached the root, whatever that may be
142
raise NotBranchError(path=url)
146
def initialize(base):
147
"""Create a new branch, rooted at 'base' (url)"""
148
t = get_transport(base)
149
return BzrBranch(t, init=True)
151
def setup_caching(self, cache_root):
152
"""Subclasses that care about caching should override this, and set
153
up cached stores located under cache_root.
155
self.cache_root = cache_root
158
cfg = self.tree_config()
159
return cfg.get_option(u"nickname", default=self.base.split('/')[-1])
242
master = self.get_master_branch(possible_transports)
243
if master is not None:
244
# return the master branch value
246
except errors.BzrError, e:
247
# Silently fall back to local implicit nick if the master is
249
mutter("Could not connect to bound branch, "
250
"falling back to local nick.\n " + str(e))
251
return config.get_nickname()
161
253
def _set_nick(self, nick):
162
cfg = self.tree_config()
163
cfg.set_option(nick, "nickname")
164
assert cfg.get_option("nickname") == nick
254
self.get_config().set_user_option('nickname', nick, warn_masked=True)
166
256
nick = property(_get_nick, _set_nick)
168
def push_stores(self, branch_to):
169
"""Copy the content of this branches store to branch_to."""
170
raise NotImplementedError('push_stores is abstract')
172
def get_transaction(self):
173
"""Return the current active transaction.
175
If no transaction is active, this returns a passthrough object
176
for which all data is immediately flushed and no caching happens.
178
raise NotImplementedError('get_transaction is abstract')
259
raise NotImplementedError(self.is_locked)
261
def _lefthand_history(self, revision_id, last_rev=None,
263
if 'evil' in debug.debug_flags:
264
mutter_callsite(4, "_lefthand_history scales with history.")
265
# stop_revision must be a descendant of last_revision
266
graph = self.repository.get_graph()
267
if last_rev is not None:
268
if not graph.is_ancestor(last_rev, revision_id):
269
# our previous tip is not merged into stop_revision
270
raise errors.DivergedBranches(self, other_branch)
271
# make a new revision history from the graph
272
parents_map = graph.get_parent_map([revision_id])
273
if revision_id not in parents_map:
274
raise errors.NoSuchRevision(self, revision_id)
275
current_rev_id = revision_id
277
check_not_reserved_id = _mod_revision.check_not_reserved_id
278
# Do not include ghosts or graph origin in revision_history
279
while (current_rev_id in parents_map and
280
len(parents_map[current_rev_id]) > 0):
281
check_not_reserved_id(current_rev_id)
282
new_history.append(current_rev_id)
283
current_rev_id = parents_map[current_rev_id][0]
284
parents_map = graph.get_parent_map([current_rev_id])
285
new_history.reverse()
180
288
def lock_write(self):
181
raise NotImplementedError('lock_write is abstract')
289
raise NotImplementedError(self.lock_write)
183
291
def lock_read(self):
184
raise NotImplementedError('lock_read is abstract')
292
raise NotImplementedError(self.lock_read)
186
294
def unlock(self):
187
raise NotImplementedError('unlock is abstract')
189
def abspath(self, name):
190
"""Return absolute filename for something in the branch
192
XXX: Robert Collins 20051017 what is this used for? why is it a branch
193
method and not a tree method.
195
raise NotImplementedError('abspath is abstract')
197
def controlfilename(self, file_or_path):
198
"""Return location relative to branch."""
199
raise NotImplementedError('controlfilename is abstract')
201
def controlfile(self, file_or_path, mode='r'):
202
"""Open a control file for this branch.
204
There are two classes of file in the control directory: text
205
and binary. binary files are untranslated byte streams. Text
206
control files are stored with Unix newlines and in UTF-8, even
207
if the platform or locale defaults are different.
209
Controlfiles should almost never be opened in write mode but
210
rather should be atomically copied and replaced using atomicfile.
212
raise NotImplementedError('controlfile is abstract')
214
def put_controlfile(self, path, f, encode=True):
215
"""Write an entry as a controlfile.
217
:param path: The path to put the file, relative to the .bzr control
219
:param f: A file-like or string object whose contents should be copied.
220
:param encode: If true, encode the contents as utf-8
222
raise NotImplementedError('put_controlfile is abstract')
224
def put_controlfiles(self, files, encode=True):
225
"""Write several entries as controlfiles.
227
:param files: A list of [(path, file)] pairs, where the path is the directory
228
underneath the bzr control directory
229
:param encode: If true, encode the contents as utf-8
231
raise NotImplementedError('put_controlfiles is abstract')
233
def get_root_id(self):
234
"""Return the id of this branches root"""
235
raise NotImplementedError('get_root_id is abstract')
237
def set_root_id(self, file_id):
238
raise NotImplementedError('set_root_id is abstract')
240
def add(self, files, ids=None):
241
"""Make files versioned.
243
Note that the command line normally calls smart_add instead,
244
which can automatically recurse.
246
This puts the files in the Added state, so that they will be
247
recorded by the next commit.
250
List of paths to add, relative to the base of the tree.
253
If set, use these instead of automatically generated ids.
254
Must be the same length as the list of files, but may
255
contain None for ids that are to be autogenerated.
257
TODO: Perhaps have an option to add the ids even if the files do
260
TODO: Perhaps yield the ids and paths as they're added.
262
raise NotImplementedError('add is abstract')
264
def print_file(self, file, revno):
265
"""Print `file` to stdout."""
266
raise NotImplementedError('print_file is abstract')
269
"""Return all unknown files.
271
These are files in the working directory that are not versioned or
272
control files or ignored.
274
>>> from bzrlib.workingtree import WorkingTree
275
>>> b = ScratchBranch(files=['foo', 'foo~'])
276
>>> map(str, b.unknowns())
279
>>> list(b.unknowns())
281
>>> WorkingTree(b.base, b).remove('foo')
282
>>> list(b.unknowns())
285
raise NotImplementedError('unknowns is abstract')
287
def append_revision(self, *revision_ids):
288
raise NotImplementedError('append_revision is abstract')
290
def set_revision_history(self, rev_history):
291
raise NotImplementedError('set_revision_history is abstract')
293
def has_revision(self, revision_id):
294
"""True if this branch has a copy of the revision.
296
This does not necessarily imply the revision is merge
297
or on the mainline."""
298
raise NotImplementedError('has_revision is abstract')
300
def get_revision_xml_file(self, revision_id):
301
"""Return XML file object for revision object."""
302
raise NotImplementedError('get_revision_xml_file is abstract')
304
def get_revision_xml(self, revision_id):
305
raise NotImplementedError('get_revision_xml is abstract')
307
def get_revision(self, revision_id):
308
"""Return the Revision object for a named revision"""
309
raise NotImplementedError('get_revision is abstract')
295
raise NotImplementedError(self.unlock)
297
def peek_lock_mode(self):
298
"""Return lock mode for the Branch: 'r', 'w' or None"""
299
raise NotImplementedError(self.peek_lock_mode)
301
def get_physical_lock_status(self):
302
raise NotImplementedError(self.get_physical_lock_status)
305
def dotted_revno_to_revision_id(self, revno, _cache_reverse=False):
306
"""Return the revision_id for a dotted revno.
308
:param revno: a tuple like (1,) or (1,1,2)
309
:param _cache_reverse: a private parameter enabling storage
310
of the reverse mapping in a top level cache. (This should
311
only be done in selective circumstances as we want to
312
avoid having the mapping cached multiple times.)
313
:return: the revision_id
314
:raises errors.NoSuchRevision: if the revno doesn't exist
316
rev_id = self._do_dotted_revno_to_revision_id(revno)
318
self._partial_revision_id_to_revno_cache[rev_id] = revno
321
def _do_dotted_revno_to_revision_id(self, revno):
322
"""Worker function for dotted_revno_to_revision_id.
324
Subclasses should override this if they wish to
325
provide a more efficient implementation.
328
return self.get_rev_id(revno[0])
329
revision_id_to_revno = self.get_revision_id_to_revno_map()
330
revision_ids = [revision_id for revision_id, this_revno
331
in revision_id_to_revno.iteritems()
332
if revno == this_revno]
333
if len(revision_ids) == 1:
334
return revision_ids[0]
336
revno_str = '.'.join(map(str, revno))
337
raise errors.NoSuchRevision(self, revno_str)
340
def revision_id_to_dotted_revno(self, revision_id):
341
"""Given a revision id, return its dotted revno.
343
:return: a tuple like (1,) or (400,1,3).
345
return self._do_revision_id_to_dotted_revno(revision_id)
347
def _do_revision_id_to_dotted_revno(self, revision_id):
348
"""Worker function for revision_id_to_revno."""
349
# Try the caches if they are loaded
350
result = self._partial_revision_id_to_revno_cache.get(revision_id)
351
if result is not None:
353
if self._revision_id_to_revno_cache:
354
result = self._revision_id_to_revno_cache.get(revision_id)
356
raise errors.NoSuchRevision(self, revision_id)
357
# Try the mainline as it's optimised
359
revno = self.revision_id_to_revno(revision_id)
361
except errors.NoSuchRevision:
362
# We need to load and use the full revno map after all
363
result = self.get_revision_id_to_revno_map().get(revision_id)
365
raise errors.NoSuchRevision(self, revision_id)
369
def get_revision_id_to_revno_map(self):
370
"""Return the revision_id => dotted revno map.
372
This will be regenerated on demand, but will be cached.
374
:return: A dictionary mapping revision_id => dotted revno.
375
This dictionary should not be modified by the caller.
377
if self._revision_id_to_revno_cache is not None:
378
mapping = self._revision_id_to_revno_cache
380
mapping = self._gen_revno_map()
381
self._cache_revision_id_to_revno(mapping)
382
# TODO: jam 20070417 Since this is being cached, should we be returning
384
# I would rather not, and instead just declare that users should not
385
# modify the return value.
388
def _gen_revno_map(self):
389
"""Create a new mapping from revision ids to dotted revnos.
391
Dotted revnos are generated based on the current tip in the revision
393
This is the worker function for get_revision_id_to_revno_map, which
394
just caches the return value.
396
:return: A dictionary mapping revision_id => dotted revno.
398
revision_id_to_revno = dict((rev_id, revno)
399
for rev_id, depth, revno, end_of_merge
400
in self.iter_merge_sorted_revisions())
401
return revision_id_to_revno
404
def iter_merge_sorted_revisions(self, start_revision_id=None,
405
stop_revision_id=None, stop_rule='exclude', direction='reverse'):
406
"""Walk the revisions for a branch in merge sorted order.
408
Merge sorted order is the output from a merge-aware,
409
topological sort, i.e. all parents come before their
410
children going forward; the opposite for reverse.
412
:param start_revision_id: the revision_id to begin walking from.
413
If None, the branch tip is used.
414
:param stop_revision_id: the revision_id to terminate the walk
415
after. If None, the rest of history is included.
416
:param stop_rule: if stop_revision_id is not None, the precise rule
417
to use for termination:
418
* 'exclude' - leave the stop revision out of the result (default)
419
* 'include' - the stop revision is the last item in the result
420
* 'with-merges' - include the stop revision and all of its
421
merged revisions in the result
422
:param direction: either 'reverse' or 'forward':
423
* reverse means return the start_revision_id first, i.e.
424
start at the most recent revision and go backwards in history
425
* forward returns tuples in the opposite order to reverse.
426
Note in particular that forward does *not* do any intelligent
427
ordering w.r.t. depth as some clients of this API may like.
428
(If required, that ought to be done at higher layers.)
430
:return: an iterator over (revision_id, depth, revno, end_of_merge)
433
* revision_id: the unique id of the revision
434
* depth: How many levels of merging deep this node has been
436
* revno_sequence: This field provides a sequence of
437
revision numbers for all revisions. The format is:
438
(REVNO, BRANCHNUM, BRANCHREVNO). BRANCHNUM is the number of the
439
branch that the revno is on. From left to right the REVNO numbers
440
are the sequence numbers within that branch of the revision.
441
* end_of_merge: When True the next node (earlier in history) is
442
part of a different merge.
444
# Note: depth and revno values are in the context of the branch so
445
# we need the full graph to get stable numbers, regardless of the
447
if self._merge_sorted_revisions_cache is None:
448
last_revision = self.last_revision()
449
last_key = (last_revision,)
450
known_graph = self.repository.revisions.get_known_graph_ancestry(
452
self._merge_sorted_revisions_cache = known_graph.merge_sort(
454
filtered = self._filter_merge_sorted_revisions(
455
self._merge_sorted_revisions_cache, start_revision_id,
456
stop_revision_id, stop_rule)
457
if direction == 'reverse':
459
if direction == 'forward':
460
return reversed(list(filtered))
462
raise ValueError('invalid direction %r' % direction)
464
def _filter_merge_sorted_revisions(self, merge_sorted_revisions,
465
start_revision_id, stop_revision_id, stop_rule):
466
"""Iterate over an inclusive range of sorted revisions."""
467
rev_iter = iter(merge_sorted_revisions)
468
if start_revision_id is not None:
469
for node in rev_iter:
470
rev_id = node.key[-1]
471
if rev_id != start_revision_id:
474
# The decision to include the start or not
475
# depends on the stop_rule if a stop is provided
476
# so pop this node back into the iterator
477
rev_iter = chain(iter([node]), rev_iter)
479
if stop_revision_id is None:
481
for node in rev_iter:
482
rev_id = node.key[-1]
483
yield (rev_id, node.merge_depth, node.revno,
485
elif stop_rule == 'exclude':
486
for node in rev_iter:
487
rev_id = node.key[-1]
488
if rev_id == stop_revision_id:
490
yield (rev_id, node.merge_depth, node.revno,
492
elif stop_rule == 'include':
493
for node in rev_iter:
494
rev_id = node.key[-1]
495
yield (rev_id, node.merge_depth, node.revno,
497
if rev_id == stop_revision_id:
499
elif stop_rule == 'with-merges':
500
stop_rev = self.repository.get_revision(stop_revision_id)
501
if stop_rev.parent_ids:
502
left_parent = stop_rev.parent_ids[0]
504
left_parent = _mod_revision.NULL_REVISION
505
for node in rev_iter:
506
rev_id = node.key[-1]
507
if rev_id == left_parent:
509
yield (rev_id, node.merge_depth, node.revno,
512
raise ValueError('invalid stop_rule %r' % stop_rule)
514
def leave_lock_in_place(self):
515
"""Tell this branch object not to release the physical lock when this
518
If lock_write doesn't return a token, then this method is not supported.
520
self.control_files.leave_in_place()
522
def dont_leave_lock_in_place(self):
523
"""Tell this branch object to release the physical lock when this
524
object is unlocked, even if it didn't originally acquire it.
526
If lock_write doesn't return a token, then this method is not supported.
528
self.control_files.dont_leave_in_place()
530
def bind(self, other):
531
"""Bind the local branch the other branch.
533
:param other: The branch to bind to
536
raise errors.UpgradeRequired(self.base)
538
def set_append_revisions_only(self, enabled):
539
if not self._format.supports_set_append_revisions_only():
540
raise errors.UpgradeRequired(self.base)
545
self.get_config().set_user_option('append_revisions_only', value,
548
def set_reference_info(self, file_id, tree_path, branch_location):
549
"""Set the branch location to use for a tree reference."""
550
raise errors.UnsupportedOperation(self.set_reference_info, self)
552
def get_reference_info(self, file_id):
553
"""Get the tree_path and branch_location for a tree reference."""
554
raise errors.UnsupportedOperation(self.get_reference_info, self)
557
def fetch(self, from_branch, last_revision=None, pb=None):
558
"""Copy revisions from from_branch into this branch.
560
:param from_branch: Where to copy from.
561
:param last_revision: What revision to stop at (None for at the end
563
:param pb: An optional progress bar to use.
566
if self.base == from_branch.base:
569
symbol_versioning.warn(
570
symbol_versioning.deprecated_in((1, 14, 0))
571
% "pb parameter to fetch()")
572
from_branch.lock_read()
574
if last_revision is None:
575
last_revision = from_branch.last_revision()
576
last_revision = _mod_revision.ensure_null(last_revision)
577
return self.repository.fetch(from_branch.repository,
578
revision_id=last_revision,
583
def get_bound_location(self):
584
"""Return the URL of the branch we are bound to.
586
Older format branches cannot bind, please be sure to use a metadir
591
def get_old_bound_location(self):
592
"""Return the URL of the branch we used to be bound to
594
raise errors.UpgradeRequired(self.base)
596
def get_commit_builder(self, parents, config=None, timestamp=None,
597
timezone=None, committer=None, revprops=None,
599
"""Obtain a CommitBuilder for this branch.
601
:param parents: Revision ids of the parents of the new revision.
602
:param config: Optional configuration to use.
603
:param timestamp: Optional timestamp recorded for commit.
604
:param timezone: Optional timezone for timestamp.
605
:param committer: Optional committer to set for commit.
606
:param revprops: Optional dictionary of revision properties.
607
:param revision_id: Optional revision id.
611
config = self.get_config()
613
return self.repository.get_commit_builder(self, parents, config,
614
timestamp, timezone, committer, revprops, revision_id)
616
def get_master_branch(self, possible_transports=None):
617
"""Return the branch we are bound to.
619
:return: Either a Branch, or None
311
623
def get_revision_delta(self, revno):
312
624
"""Return the delta for one revision.
547
1116
self.check_real_revno(revno)
549
1118
def check_real_revno(self, revno):
551
1120
Check whether a revno corresponds to a real revision.
552
1121
Zero (the NULL revision) is considered invalid
554
1123
if revno < 1 or revno > self.revno():
555
raise InvalidRevisionNumber(revno)
557
def sign_revision(self, revision_id, gpg_strategy):
558
raise NotImplementedError('sign_revision is abstract')
560
def store_revision_signature(self, gpg_strategy, plaintext, revision_id):
561
raise NotImplementedError('store_revision_signature is abstract')
1124
raise errors.InvalidRevisionNumber(revno)
1127
def clone(self, to_bzrdir, revision_id=None, repository_policy=None):
1128
"""Clone this branch into to_bzrdir preserving all semantic values.
1130
Most API users will want 'create_clone_on_transport', which creates a
1131
new bzrdir and branch on the fly.
1133
revision_id: if not None, the revision history in the new branch will
1134
be truncated to end with revision_id.
1136
result = to_bzrdir.create_branch()
1139
if repository_policy is not None:
1140
repository_policy.configure_branch(result)
1141
self.copy_content_into(result, revision_id=revision_id)
1147
def sprout(self, to_bzrdir, revision_id=None, repository_policy=None):
1148
"""Create a new line of development from the branch, into to_bzrdir.
1150
to_bzrdir controls the branch format.
1152
revision_id: if not None, the revision history in the new branch will
1153
be truncated to end with revision_id.
1155
if (repository_policy is not None and
1156
repository_policy.requires_stacking()):
1157
to_bzrdir._format.require_stacking(_skip_repo=True)
1158
result = to_bzrdir.create_branch()
1161
if repository_policy is not None:
1162
repository_policy.configure_branch(result)
1163
self.copy_content_into(result, revision_id=revision_id)
1164
result.set_parent(self.bzrdir.root_transport.base)
1169
def _synchronize_history(self, destination, revision_id):
1170
"""Synchronize last revision and revision history between branches.
1172
This version is most efficient when the destination is also a
1173
BzrBranch6, but works for BzrBranch5, as long as the destination's
1174
repository contains all the lefthand ancestors of the intended
1175
last_revision. If not, set_last_revision_info will fail.
1177
:param destination: The branch to copy the history into
1178
:param revision_id: The revision-id to truncate history at. May
1179
be None to copy complete history.
1181
source_revno, source_revision_id = self.last_revision_info()
1182
if revision_id is None:
1183
revno, revision_id = source_revno, source_revision_id
1185
graph = self.repository.get_graph()
1187
revno = graph.find_distance_to_null(revision_id,
1188
[(source_revision_id, source_revno)])
1189
except errors.GhostRevisionsHaveNoRevno:
1190
# Default to 1, if we can't find anything else
1192
destination.set_last_revision_info(revno, revision_id)
1195
def copy_content_into(self, destination, revision_id=None):
1196
"""Copy the content of self into destination.
1198
revision_id: if not None, the revision history in the new branch will
1199
be truncated to end with revision_id.
1201
self.update_references(destination)
1202
self._synchronize_history(destination, revision_id)
1204
parent = self.get_parent()
1205
except errors.InaccessibleParent, e:
1206
mutter('parent was not accessible to copy: %s', e)
1209
destination.set_parent(parent)
1210
if self._push_should_merge_tags():
1211
self.tags.merge_to(destination.tags)
1213
def update_references(self, target):
1214
if not getattr(self._format, 'supports_reference_locations', False):
1216
reference_dict = self._get_all_reference_info()
1217
if len(reference_dict) == 0:
1219
old_base = self.base
1220
new_base = target.base
1221
target_reference_dict = target._get_all_reference_info()
1222
for file_id, (tree_path, branch_location) in (
1223
reference_dict.items()):
1224
branch_location = urlutils.rebase_url(branch_location,
1226
target_reference_dict.setdefault(
1227
file_id, (tree_path, branch_location))
1228
target._set_all_reference_info(target_reference_dict)
1231
def check(self, refs):
1232
"""Check consistency of the branch.
1234
In particular this checks that revisions given in the revision-history
1235
do actually match up in the revision graph, and that they're all
1236
present in the repository.
1238
Callers will typically also want to check the repository.
1240
:param refs: Calculated refs for this branch as specified by
1241
branch._get_check_refs()
1242
:return: A BranchCheckResult.
1244
result = BranchCheckResult(self)
1245
last_revno, last_revision_id = self.last_revision_info()
1246
actual_revno = refs[('lefthand-distance', last_revision_id)]
1247
if actual_revno != last_revno:
1248
result.errors.append(errors.BzrCheckError(
1249
'revno does not match len(mainline) %s != %s' % (
1250
last_revno, actual_revno)))
1251
# TODO: We should probably also check that self.revision_history
1252
# matches the repository for older branch formats.
1253
# If looking for the code that cross-checks repository parents against
1254
# the iter_reverse_revision_history output, that is now a repository
1258
def _get_checkout_format(self):
1259
"""Return the most suitable metadir for a checkout of this branch.
1260
Weaves are used if this branch's repository uses weaves.
1262
if isinstance(self.bzrdir, bzrdir.BzrDirPreSplitOut):
1263
from bzrlib.repofmt import weaverepo
1264
format = bzrdir.BzrDirMetaFormat1()
1265
format.repository_format = weaverepo.RepositoryFormat7()
1267
format = self.repository.bzrdir.checkout_metadir()
1268
format.set_branch_format(self._format)
1271
def create_clone_on_transport(self, to_transport, revision_id=None,
1272
stacked_on=None, create_prefix=False, use_existing_dir=False):
1273
"""Create a clone of this branch and its bzrdir.
1275
:param to_transport: The transport to clone onto.
1276
:param revision_id: The revision id to use as tip in the new branch.
1277
If None the tip is obtained from this branch.
1278
:param stacked_on: An optional URL to stack the clone on.
1279
:param create_prefix: Create any missing directories leading up to
1281
:param use_existing_dir: Use an existing directory if one exists.
1283
# XXX: Fix the bzrdir API to allow getting the branch back from the
1284
# clone call. Or something. 20090224 RBC/spiv.
1285
if revision_id is None:
1286
revision_id = self.last_revision()
1288
dir_to = self.bzrdir.clone_on_transport(to_transport,
1289
revision_id=revision_id, stacked_on=stacked_on,
1290
create_prefix=create_prefix, use_existing_dir=use_existing_dir)
1291
except errors.FileExists:
1292
if not use_existing_dir:
1294
except errors.NoSuchFile:
1295
if not create_prefix:
1297
return dir_to.open_branch()
1299
def create_checkout(self, to_location, revision_id=None,
1300
lightweight=False, accelerator_tree=None,
1302
"""Create a checkout of a branch.
1304
:param to_location: The url to produce the checkout at
1305
:param revision_id: The revision to check out
1306
:param lightweight: If True, produce a lightweight checkout, otherwise,
1307
produce a bound branch (heavyweight checkout)
1308
:param accelerator_tree: A tree which can be used for retrieving file
1309
contents more quickly than the revision tree, i.e. a workingtree.
1310
The revision tree will be used for cases where accelerator_tree's
1311
content is different.
1312
:param hardlink: If true, hard-link files from accelerator_tree,
1314
:return: The tree of the created checkout
1316
t = transport.get_transport(to_location)
1319
format = self._get_checkout_format()
1320
checkout = format.initialize_on_transport(t)
1321
from_branch = BranchReferenceFormat().initialize(checkout, self)
1323
format = self._get_checkout_format()
1324
checkout_branch = bzrdir.BzrDir.create_branch_convenience(
1325
to_location, force_new_tree=False, format=format)
1326
checkout = checkout_branch.bzrdir
1327
checkout_branch.bind(self)
1328
# pull up to the specified revision_id to set the initial
1329
# branch tip correctly, and seed it with history.
1330
checkout_branch.pull(self, stop_revision=revision_id)
1332
tree = checkout.create_workingtree(revision_id,
1333
from_branch=from_branch,
1334
accelerator_tree=accelerator_tree,
1336
basis_tree = tree.basis_tree()
1337
basis_tree.lock_read()
1339
for path, file_id in basis_tree.iter_references():
1340
reference_parent = self.reference_parent(file_id, path)
1341
reference_parent.create_checkout(tree.abspath(path),
1342
basis_tree.get_reference_revision(file_id, path),
1349
def reconcile(self, thorough=True):
1350
"""Make sure the data stored in this branch is consistent."""
1351
from bzrlib.reconcile import BranchReconciler
1352
reconciler = BranchReconciler(self, thorough=thorough)
1353
reconciler.reconcile()
1356
def reference_parent(self, file_id, path, possible_transports=None):
1357
"""Return the parent branch for a tree-reference file_id
1358
:param file_id: The file_id of the tree reference
1359
:param path: The path of the file_id in the tree
1360
:return: A branch associated with the file_id
1362
# FIXME should provide multiple branches, based on config
1363
return Branch.open(self.bzrdir.root_transport.clone(path).base,
1364
possible_transports=possible_transports)
1366
def supports_tags(self):
1367
return self._format.supports_tags()
1369
def _check_if_descendant_or_diverged(self, revision_a, revision_b, graph,
1371
"""Ensure that revision_b is a descendant of revision_a.
1373
This is a helper function for update_revisions.
1375
:raises: DivergedBranches if revision_b has diverged from revision_a.
1376
:returns: True if revision_b is a descendant of revision_a.
1378
relation = self._revision_relations(revision_a, revision_b, graph)
1379
if relation == 'b_descends_from_a':
1381
elif relation == 'diverged':
1382
raise errors.DivergedBranches(self, other_branch)
1383
elif relation == 'a_descends_from_b':
1386
raise AssertionError("invalid relation: %r" % (relation,))
1388
def _revision_relations(self, revision_a, revision_b, graph):
1389
"""Determine the relationship between two revisions.
1391
:returns: One of: 'a_descends_from_b', 'b_descends_from_a', 'diverged'
1393
heads = graph.heads([revision_a, revision_b])
1394
if heads == set([revision_b]):
1395
return 'b_descends_from_a'
1396
elif heads == set([revision_a, revision_b]):
1397
# These branches have diverged
1399
elif heads == set([revision_a]):
1400
return 'a_descends_from_b'
1402
raise AssertionError("invalid heads: %r" % (heads,))
1405
class BranchFormat(object):
1406
"""An encapsulation of the initialization and open routines for a format.
1408
Formats provide three things:
1409
* An initialization routine,
1413
Formats are placed in an dict by their format string for reference
1414
during branch opening. Its not required that these be instances, they
1415
can be classes themselves with class methods - it simply depends on
1416
whether state is needed for a given format or not.
1418
Once a format is deprecated, just deprecate the initialize and open
1419
methods on the format class. Do not deprecate the object, as the
1420
object will be created every time regardless.
1423
_default_format = None
1424
"""The default format used for new branches."""
1427
"""The known formats."""
1429
can_set_append_revisions_only = True
1431
def __eq__(self, other):
1432
return self.__class__ is other.__class__
1434
def __ne__(self, other):
1435
return not (self == other)
1438
def find_format(klass, a_bzrdir):
1439
"""Return the format for the branch object in a_bzrdir."""
1441
transport = a_bzrdir.get_branch_transport(None)
1442
format_string = transport.get("format").read()
1443
return klass._formats[format_string]
1444
except errors.NoSuchFile:
1445
raise errors.NotBranchError(path=transport.base)
1447
raise errors.UnknownFormatError(format=format_string, kind='branch')
1450
def get_default_format(klass):
1451
"""Return the current default format."""
1452
return klass._default_format
1454
def get_reference(self, a_bzrdir):
1455
"""Get the target reference of the branch in a_bzrdir.
1457
format probing must have been completed before calling
1458
this method - it is assumed that the format of the branch
1459
in a_bzrdir is correct.
1461
:param a_bzrdir: The bzrdir to get the branch data from.
1462
:return: None if the branch is not a reference branch.
1467
def set_reference(self, a_bzrdir, to_branch):
1468
"""Set the target reference of the branch in a_bzrdir.
1470
format probing must have been completed before calling
1471
this method - it is assumed that the format of the branch
1472
in a_bzrdir is correct.
1474
:param a_bzrdir: The bzrdir to set the branch reference for.
1475
:param to_branch: branch that the checkout is to reference
1477
raise NotImplementedError(self.set_reference)
1479
def get_format_string(self):
1480
"""Return the ASCII format string that identifies this format."""
1481
raise NotImplementedError(self.get_format_string)
1483
def get_format_description(self):
1484
"""Return the short format description for this format."""
1485
raise NotImplementedError(self.get_format_description)
1487
def _initialize_helper(self, a_bzrdir, utf8_files, lock_type='metadir',
1489
"""Initialize a branch in a bzrdir, with specified files
1491
:param a_bzrdir: The bzrdir to initialize the branch in
1492
:param utf8_files: The files to create as a list of
1493
(filename, content) tuples
1494
:param set_format: If True, set the format with
1495
self.get_format_string. (BzrBranch4 has its format set
1497
:return: a branch in this format
1499
mutter('creating branch %r in %s', self, a_bzrdir.transport.base)
1500
branch_transport = a_bzrdir.get_branch_transport(self)
1502
'metadir': ('lock', lockdir.LockDir),
1503
'branch4': ('branch-lock', lockable_files.TransportLock),
1505
lock_name, lock_class = lock_map[lock_type]
1506
control_files = lockable_files.LockableFiles(branch_transport,
1507
lock_name, lock_class)
1508
control_files.create_lock()
1510
control_files.lock_write()
1511
except errors.LockContention:
1512
if lock_type != 'branch4':
1518
utf8_files += [('format', self.get_format_string())]
1520
for (filename, content) in utf8_files:
1521
branch_transport.put_bytes(
1523
mode=a_bzrdir._get_file_mode())
1526
control_files.unlock()
1527
return self.open(a_bzrdir, _found=True)
1529
def initialize(self, a_bzrdir):
1530
"""Create a branch of this format in a_bzrdir."""
1531
raise NotImplementedError(self.initialize)
1533
def is_supported(self):
1534
"""Is this format supported?
1536
Supported formats can be initialized and opened.
1537
Unsupported formats may not support initialization or committing or
1538
some other features depending on the reason for not being supported.
1542
def make_tags(self, branch):
1543
"""Create a tags object for branch.
1545
This method is on BranchFormat, because BranchFormats are reflected
1546
over the wire via network_name(), whereas full Branch instances require
1547
multiple VFS method calls to operate at all.
1549
The default implementation returns a disabled-tags instance.
1551
Note that it is normal for branch to be a RemoteBranch when using tags
1554
return DisabledTags(branch)
1556
def network_name(self):
1557
"""A simple byte string uniquely identifying this format for RPC calls.
1559
MetaDir branch formats use their disk format string to identify the
1560
repository over the wire. All in one formats such as bzr < 0.8, and
1561
foreign formats like svn/git and hg should use some marker which is
1562
unique and immutable.
1564
raise NotImplementedError(self.network_name)
1566
def open(self, a_bzrdir, _found=False, ignore_fallbacks=False):
1567
"""Return the branch object for a_bzrdir
1569
:param a_bzrdir: A BzrDir that contains a branch.
1570
:param _found: a private parameter, do not use it. It is used to
1571
indicate if format probing has already be done.
1572
:param ignore_fallbacks: when set, no fallback branches will be opened
1573
(if there are any). Default is to open fallbacks.
1575
raise NotImplementedError(self.open)
1578
def register_format(klass, format):
1579
"""Register a metadir format."""
1580
klass._formats[format.get_format_string()] = format
1581
# Metadir formats have a network name of their format string, and get
1582
# registered as class factories.
1583
network_format_registry.register(format.get_format_string(), format.__class__)
1586
def set_default_format(klass, format):
1587
klass._default_format = format
1589
def supports_set_append_revisions_only(self):
1590
"""True if this format supports set_append_revisions_only."""
1593
def supports_stacking(self):
1594
"""True if this format records a stacked-on branch."""
1598
def unregister_format(klass, format):
1599
del klass._formats[format.get_format_string()]
1602
return self.get_format_description().rstrip()
1604
def supports_tags(self):
1605
"""True if this format supports tags stored in the branch"""
1606
return False # by default
1609
class BranchHooks(Hooks):
1610
"""A dictionary mapping hook name to a list of callables for branch hooks.
1612
e.g. ['set_rh'] Is the list of items to be called when the
1613
set_revision_history function is invoked.
1617
"""Create the default hooks.
1619
These are all empty initially, because by default nothing should get
1622
Hooks.__init__(self)
1623
self.create_hook(HookPoint('set_rh',
1624
"Invoked whenever the revision history has been set via "
1625
"set_revision_history. The api signature is (branch, "
1626
"revision_history), and the branch will be write-locked. "
1627
"The set_rh hook can be expensive for bzr to trigger, a better "
1628
"hook to use is Branch.post_change_branch_tip.", (0, 15), None))
1629
self.create_hook(HookPoint('open',
1630
"Called with the Branch object that has been opened after a "
1631
"branch is opened.", (1, 8), None))
1632
self.create_hook(HookPoint('post_push',
1633
"Called after a push operation completes. post_push is called "
1634
"with a bzrlib.branch.BranchPushResult object and only runs in the "
1635
"bzr client.", (0, 15), None))
1636
self.create_hook(HookPoint('post_pull',
1637
"Called after a pull operation completes. post_pull is called "
1638
"with a bzrlib.branch.PullResult object and only runs in the "
1639
"bzr client.", (0, 15), None))
1640
self.create_hook(HookPoint('pre_commit',
1641
"Called after a commit is calculated but before it is is "
1642
"completed. pre_commit is called with (local, master, old_revno, "
1643
"old_revid, future_revno, future_revid, tree_delta, future_tree"
1644
"). old_revid is NULL_REVISION for the first commit to a branch, "
1645
"tree_delta is a TreeDelta object describing changes from the "
1646
"basis revision. hooks MUST NOT modify this delta. "
1647
" future_tree is an in-memory tree obtained from "
1648
"CommitBuilder.revision_tree() and hooks MUST NOT modify this "
1649
"tree.", (0,91), None))
1650
self.create_hook(HookPoint('post_commit',
1651
"Called in the bzr client after a commit has completed. "
1652
"post_commit is called with (local, master, old_revno, old_revid, "
1653
"new_revno, new_revid). old_revid is NULL_REVISION for the first "
1654
"commit to a branch.", (0, 15), None))
1655
self.create_hook(HookPoint('post_uncommit',
1656
"Called in the bzr client after an uncommit completes. "
1657
"post_uncommit is called with (local, master, old_revno, "
1658
"old_revid, new_revno, new_revid) where local is the local branch "
1659
"or None, master is the target branch, and an empty branch "
1660
"receives new_revno of 0, new_revid of None.", (0, 15), None))
1661
self.create_hook(HookPoint('pre_change_branch_tip',
1662
"Called in bzr client and server before a change to the tip of a "
1663
"branch is made. pre_change_branch_tip is called with a "
1664
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1665
"commit, uncommit will all trigger this hook.", (1, 6), None))
1666
self.create_hook(HookPoint('post_change_branch_tip',
1667
"Called in bzr client and server after a change to the tip of a "
1668
"branch is made. post_change_branch_tip is called with a "
1669
"bzrlib.branch.ChangeBranchTipParams. Note that push, pull, "
1670
"commit, uncommit will all trigger this hook.", (1, 4), None))
1671
self.create_hook(HookPoint('transform_fallback_location',
1672
"Called when a stacked branch is activating its fallback "
1673
"locations. transform_fallback_location is called with (branch, "
1674
"url), and should return a new url. Returning the same url "
1675
"allows it to be used as-is, returning a different one can be "
1676
"used to cause the branch to stack on a closer copy of that "
1677
"fallback_location. Note that the branch cannot have history "
1678
"accessing methods called on it during this hook because the "
1679
"fallback locations have not been activated. When there are "
1680
"multiple hooks installed for transform_fallback_location, "
1681
"all are called with the url returned from the previous hook."
1682
"The order is however undefined.", (1, 9), None))
1685
# install the default hooks into the Branch class.
1686
Branch.hooks = BranchHooks()
1689
class ChangeBranchTipParams(object):
1690
"""Object holding parameters passed to *_change_branch_tip hooks.
1692
There are 5 fields that hooks may wish to access:
1694
:ivar branch: the branch being changed
1695
:ivar old_revno: revision number before the change
1696
:ivar new_revno: revision number after the change
1697
:ivar old_revid: revision id before the change
1698
:ivar new_revid: revision id after the change
1700
The revid fields are strings. The revno fields are integers.
1703
def __init__(self, branch, old_revno, new_revno, old_revid, new_revid):
1704
"""Create a group of ChangeBranchTip parameters.
1706
:param branch: The branch being changed.
1707
:param old_revno: Revision number before the change.
1708
:param new_revno: Revision number after the change.
1709
:param old_revid: Tip revision id before the change.
1710
:param new_revid: Tip revision id after the change.
1712
self.branch = branch
1713
self.old_revno = old_revno
1714
self.new_revno = new_revno
1715
self.old_revid = old_revid
1716
self.new_revid = new_revid
1718
def __eq__(self, other):
1719
return self.__dict__ == other.__dict__
1722
return "<%s of %s from (%s, %s) to (%s, %s)>" % (
1723
self.__class__.__name__, self.branch,
1724
self.old_revno, self.old_revid, self.new_revno, self.new_revid)
1727
class BzrBranchFormat4(BranchFormat):
1728
"""Bzr branch format 4.
1731
- a revision-history file.
1732
- a branch-lock lock file [ to be shared with the bzrdir ]
1735
def get_format_description(self):
1736
"""See BranchFormat.get_format_description()."""
1737
return "Branch format 4"
1739
def initialize(self, a_bzrdir):
1740
"""Create a branch of this format in a_bzrdir."""
1741
utf8_files = [('revision-history', ''),
1742
('branch-name', ''),
1744
return self._initialize_helper(a_bzrdir, utf8_files,
1745
lock_type='branch4', set_format=False)
1748
super(BzrBranchFormat4, self).__init__()
1749
self._matchingbzrdir = bzrdir.BzrDirFormat6()
1751
def network_name(self):
1752
"""The network name for this format is the control dirs disk label."""
1753
return self._matchingbzrdir.get_format_string()
1755
def open(self, a_bzrdir, _found=False, ignore_fallbacks=False):
1756
"""See BranchFormat.open()."""
1758
# we are being called directly and must probe.
1759
raise NotImplementedError
1760
return BzrBranch(_format=self,
1761
_control_files=a_bzrdir._control_files,
1763
_repository=a_bzrdir.open_repository())
1766
return "Bazaar-NG branch format 4"
1769
class BranchFormatMetadir(BranchFormat):
1770
"""Common logic for meta-dir based branch formats."""
1772
def _branch_class(self):
1773
"""What class to instantiate on open calls."""
1774
raise NotImplementedError(self._branch_class)
1776
def network_name(self):
1777
"""A simple byte string uniquely identifying this format for RPC calls.
1779
Metadir branch formats use their format string.
1781
return self.get_format_string()
1783
def open(self, a_bzrdir, _found=False, ignore_fallbacks=False):
1784
"""See BranchFormat.open()."""
1786
format = BranchFormat.find_format(a_bzrdir)
1787
if format.__class__ != self.__class__:
1788
raise AssertionError("wrong format %r found for %r" %
1791
transport = a_bzrdir.get_branch_transport(None)
1792
control_files = lockable_files.LockableFiles(transport, 'lock',
1794
return self._branch_class()(_format=self,
1795
_control_files=control_files,
1797
_repository=a_bzrdir.find_repository(),
1798
ignore_fallbacks=ignore_fallbacks)
1799
except errors.NoSuchFile:
1800
raise errors.NotBranchError(path=transport.base)
1803
super(BranchFormatMetadir, self).__init__()
1804
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1805
self._matchingbzrdir.set_branch_format(self)
1807
def supports_tags(self):
1811
class BzrBranchFormat5(BranchFormatMetadir):
1812
"""Bzr branch format 5.
1815
- a revision-history file.
1817
- a lock dir guarding the branch itself
1818
- all of this stored in a branch/ subdirectory
1819
- works with shared repositories.
1821
This format is new in bzr 0.8.
1824
def _branch_class(self):
1827
def get_format_string(self):
1828
"""See BranchFormat.get_format_string()."""
1829
return "Bazaar-NG branch format 5\n"
1831
def get_format_description(self):
1832
"""See BranchFormat.get_format_description()."""
1833
return "Branch format 5"
1835
def initialize(self, a_bzrdir):
1836
"""Create a branch of this format in a_bzrdir."""
1837
utf8_files = [('revision-history', ''),
1838
('branch-name', ''),
1840
return self._initialize_helper(a_bzrdir, utf8_files)
1842
def supports_tags(self):
1846
class BzrBranchFormat6(BranchFormatMetadir):
1847
"""Branch format with last-revision and tags.
1849
Unlike previous formats, this has no explicit revision history. Instead,
1850
this just stores the last-revision, and the left-hand history leading
1851
up to there is the history.
1853
This format was introduced in bzr 0.15
1854
and became the default in 0.91.
1857
def _branch_class(self):
1860
def get_format_string(self):
1861
"""See BranchFormat.get_format_string()."""
1862
return "Bazaar Branch Format 6 (bzr 0.15)\n"
1864
def get_format_description(self):
1865
"""See BranchFormat.get_format_description()."""
1866
return "Branch format 6"
1868
def initialize(self, a_bzrdir):
1869
"""Create a branch of this format in a_bzrdir."""
1870
utf8_files = [('last-revision', '0 null:\n'),
1871
('branch.conf', ''),
1874
return self._initialize_helper(a_bzrdir, utf8_files)
1876
def make_tags(self, branch):
1877
"""See bzrlib.branch.BranchFormat.make_tags()."""
1878
return BasicTags(branch)
1880
def supports_set_append_revisions_only(self):
1884
class BzrBranchFormat8(BranchFormatMetadir):
1885
"""Metadir format supporting storing locations of subtree branches."""
1887
def _branch_class(self):
1890
def get_format_string(self):
1891
"""See BranchFormat.get_format_string()."""
1892
return "Bazaar Branch Format 8 (needs bzr 1.15)\n"
1894
def get_format_description(self):
1895
"""See BranchFormat.get_format_description()."""
1896
return "Branch format 8"
1898
def initialize(self, a_bzrdir):
1899
"""Create a branch of this format in a_bzrdir."""
1900
utf8_files = [('last-revision', '0 null:\n'),
1901
('branch.conf', ''),
1905
return self._initialize_helper(a_bzrdir, utf8_files)
1908
super(BzrBranchFormat8, self).__init__()
1909
self._matchingbzrdir.repository_format = \
1910
RepositoryFormatKnitPack5RichRoot()
1912
def make_tags(self, branch):
1913
"""See bzrlib.branch.BranchFormat.make_tags()."""
1914
return BasicTags(branch)
1916
def supports_set_append_revisions_only(self):
1919
def supports_stacking(self):
1922
supports_reference_locations = True
1925
class BzrBranchFormat7(BzrBranchFormat8):
1926
"""Branch format with last-revision, tags, and a stacked location pointer.
1928
The stacked location pointer is passed down to the repository and requires
1929
a repository format with supports_external_lookups = True.
1931
This format was introduced in bzr 1.6.
1934
def initialize(self, a_bzrdir):
1935
"""Create a branch of this format in a_bzrdir."""
1936
utf8_files = [('last-revision', '0 null:\n'),
1937
('branch.conf', ''),
1940
return self._initialize_helper(a_bzrdir, utf8_files)
1942
def _branch_class(self):
1945
def get_format_string(self):
1946
"""See BranchFormat.get_format_string()."""
1947
return "Bazaar Branch Format 7 (needs bzr 1.6)\n"
1949
def get_format_description(self):
1950
"""See BranchFormat.get_format_description()."""
1951
return "Branch format 7"
1953
def supports_set_append_revisions_only(self):
1956
supports_reference_locations = False
1959
class BranchReferenceFormat(BranchFormat):
1960
"""Bzr branch reference format.
1962
Branch references are used in implementing checkouts, they
1963
act as an alias to the real branch which is at some other url.
1970
def get_format_string(self):
1971
"""See BranchFormat.get_format_string()."""
1972
return "Bazaar-NG Branch Reference Format 1\n"
1974
def get_format_description(self):
1975
"""See BranchFormat.get_format_description()."""
1976
return "Checkout reference format 1"
1978
def get_reference(self, a_bzrdir):
1979
"""See BranchFormat.get_reference()."""
1980
transport = a_bzrdir.get_branch_transport(None)
1981
return transport.get('location').read()
1983
def set_reference(self, a_bzrdir, to_branch):
1984
"""See BranchFormat.set_reference()."""
1985
transport = a_bzrdir.get_branch_transport(None)
1986
location = transport.put_bytes('location', to_branch.base)
1988
def initialize(self, a_bzrdir, target_branch=None):
1989
"""Create a branch of this format in a_bzrdir."""
1990
if target_branch is None:
1991
# this format does not implement branch itself, thus the implicit
1992
# creation contract must see it as uninitializable
1993
raise errors.UninitializableFormat(self)
1994
mutter('creating branch reference in %s', a_bzrdir.transport.base)
1995
branch_transport = a_bzrdir.get_branch_transport(self)
1996
branch_transport.put_bytes('location',
1997
target_branch.bzrdir.root_transport.base)
1998
branch_transport.put_bytes('format', self.get_format_string())
2000
a_bzrdir, _found=True,
2001
possible_transports=[target_branch.bzrdir.root_transport])
2004
super(BranchReferenceFormat, self).__init__()
2005
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
2006
self._matchingbzrdir.set_branch_format(self)
2008
def _make_reference_clone_function(format, a_branch):
2009
"""Create a clone() routine for a branch dynamically."""
2010
def clone(to_bzrdir, revision_id=None,
2011
repository_policy=None):
2012
"""See Branch.clone()."""
2013
return format.initialize(to_bzrdir, a_branch)
2014
# cannot obey revision_id limits when cloning a reference ...
2015
# FIXME RBC 20060210 either nuke revision_id for clone, or
2016
# emit some sort of warning/error to the caller ?!
2019
def open(self, a_bzrdir, _found=False, location=None,
2020
possible_transports=None, ignore_fallbacks=False):
2021
"""Return the branch that the branch reference in a_bzrdir points at.
2023
:param a_bzrdir: A BzrDir that contains a branch.
2024
:param _found: a private parameter, do not use it. It is used to
2025
indicate if format probing has already be done.
2026
:param ignore_fallbacks: when set, no fallback branches will be opened
2027
(if there are any). Default is to open fallbacks.
2028
:param location: The location of the referenced branch. If
2029
unspecified, this will be determined from the branch reference in
2031
:param possible_transports: An optional reusable transports list.
2034
format = BranchFormat.find_format(a_bzrdir)
2035
if format.__class__ != self.__class__:
2036
raise AssertionError("wrong format %r found for %r" %
2038
if location is None:
2039
location = self.get_reference(a_bzrdir)
2040
real_bzrdir = bzrdir.BzrDir.open(
2041
location, possible_transports=possible_transports)
2042
result = real_bzrdir.open_branch(ignore_fallbacks=ignore_fallbacks)
2043
# this changes the behaviour of result.clone to create a new reference
2044
# rather than a copy of the content of the branch.
2045
# I did not use a proxy object because that needs much more extensive
2046
# testing, and we are only changing one behaviour at the moment.
2047
# If we decide to alter more behaviours - i.e. the implicit nickname
2048
# then this should be refactored to introduce a tested proxy branch
2049
# and a subclass of that for use in overriding clone() and ....
2051
result.clone = self._make_reference_clone_function(result)
2055
network_format_registry = registry.FormatRegistry()
2056
"""Registry of formats indexed by their network name.
2058
The network name for a branch format is an identifier that can be used when
2059
referring to formats with smart server operations. See
2060
BranchFormat.network_name() for more detail.
2064
# formats which have no format string are not discoverable
2065
# and not independently creatable, so are not registered.
2066
__format5 = BzrBranchFormat5()
2067
__format6 = BzrBranchFormat6()
2068
__format7 = BzrBranchFormat7()
2069
__format8 = BzrBranchFormat8()
2070
BranchFormat.register_format(__format5)
2071
BranchFormat.register_format(BranchReferenceFormat())
2072
BranchFormat.register_format(__format6)
2073
BranchFormat.register_format(__format7)
2074
BranchFormat.register_format(__format8)
2075
BranchFormat.set_default_format(__format7)
2076
_legacy_formats = [BzrBranchFormat4(),
2078
network_format_registry.register(
2079
_legacy_formats[0].network_name(), _legacy_formats[0].__class__)
563
2082
class BzrBranch(Branch):
564
2083
"""A branch stored in the actual filesystem.
567
2086
really matter if it's on an nfs/smb/afs/coda/... share, as long as
568
2087
it's writable, and can be accessed via the normal filesystem API.
574
If _lock_mode is true, a positive count of the number of times the
578
Lock object from bzrlib.lock.
2089
:ivar _transport: Transport for file operations on this branch's
2090
control files, typically pointing to the .bzr/branch directory.
2091
:ivar repository: Repository for this branch.
2092
:ivar base: The url of the base directory for this branch; the one
2093
containing the .bzr directory.
580
# We actually expect this class to be somewhat short-lived; part of its
581
# purpose is to try to isolate what bits of the branch logic are tied to
582
# filesystem access, so that in a later step, we can extricate them to
583
# a separarte ("storage") class.
587
_inventory_weave = None
589
# Map some sort of prefix into a namespace
590
# stuff like "revno:10", "revid:", etc.
591
# This should match a prefix with a function which accepts
592
REVISION_NAMESPACES = {}
594
def push_stores(self, branch_to):
595
"""See Branch.push_stores."""
596
if (self._branch_format != branch_to._branch_format
597
or self._branch_format != 4):
598
from bzrlib.fetch import greedy_fetch
599
mutter("falling back to fetch logic to push between %s(%s) and %s(%s)",
600
self, self._branch_format, branch_to, branch_to._branch_format)
601
greedy_fetch(to_branch=branch_to, from_branch=self,
602
revision=self.last_revision())
605
store_pairs = ((self.text_store, branch_to.text_store),
606
(self.inventory_store, branch_to.inventory_store),
607
(self.revision_store, branch_to.revision_store))
609
for from_store, to_store in store_pairs:
610
copy_all(from_store, to_store)
611
except UnlistableStore:
612
raise UnlistableBranch(from_store)
614
def __init__(self, transport, init=False,
615
relax_version_check=False):
616
"""Create new branch object at a particular location.
618
transport -- A Transport object, defining how to access files.
620
init -- If True, create new control files in a previously
621
unversioned directory. If False, the branch must already
624
relax_version_check -- If true, the usual check for the branch
625
version is not applied. This is intended only for
626
upgrade/recovery type use; it's not guaranteed that
627
all operations will work on old format branches.
629
In the test suite, creation of new trees is tested using the
630
`ScratchBranch` class.
632
assert isinstance(transport, Transport), \
633
"%r is not a Transport" % transport
634
self._transport = transport
637
self._check_format(relax_version_check)
639
def get_store(name, compressed=True, prefixed=False):
640
# FIXME: This approach of assuming stores are all entirely compressed
641
# or entirely uncompressed is tidy, but breaks upgrade from
642
# some existing branches where there's a mixture; we probably
643
# still want the option to look for both.
644
relpath = self._rel_controlfilename(name)
645
store = TextStore(self._transport.clone(relpath),
647
compressed=compressed)
648
#if self._transport.should_cache():
649
# cache_path = os.path.join(self.cache_root, name)
650
# os.mkdir(cache_path)
651
# store = bzrlib.store.CachedStore(store, cache_path)
653
def get_weave(name, prefixed=False):
654
relpath = self._rel_controlfilename(name)
655
ws = WeaveStore(self._transport.clone(relpath), prefixed=prefixed)
656
if self._transport.should_cache():
657
ws.enable_cache = True
660
if self._branch_format == 4:
661
self.inventory_store = get_store('inventory-store')
662
self.text_store = get_store('text-store')
663
self.revision_store = get_store('revision-store')
664
elif self._branch_format == 5:
665
self.control_weaves = get_weave('')
666
self.weave_store = get_weave('weaves')
667
self.revision_store = get_store('revision-store', compressed=False)
668
elif self._branch_format == 6:
669
self.control_weaves = get_weave('')
670
self.weave_store = get_weave('weaves', prefixed=True)
671
self.revision_store = get_store('revision-store', compressed=False,
673
self.revision_store.register_suffix('sig')
674
self._transaction = None
2096
def __init__(self, _format=None,
2097
_control_files=None, a_bzrdir=None, _repository=None,
2098
ignore_fallbacks=False):
2099
"""Create new branch object at a particular location."""
2100
if a_bzrdir is None:
2101
raise ValueError('a_bzrdir must be supplied')
2103
self.bzrdir = a_bzrdir
2104
self._base = self.bzrdir.transport.clone('..').base
2105
# XXX: We should be able to just do
2106
# self.base = self.bzrdir.root_transport.base
2107
# but this does not quite work yet -- mbp 20080522
2108
self._format = _format
2109
if _control_files is None:
2110
raise ValueError('BzrBranch _control_files is None')
2111
self.control_files = _control_files
2112
self._transport = _control_files._transport
2113
self.repository = _repository
2114
Branch.__init__(self)
676
2116
def __str__(self):
677
return '%s(%r)' % (self.__class__.__name__, self._transport.base)
2117
return '%s(%r)' % (self.__class__.__name__, self.base)
679
2119
__repr__ = __str__
682
if self._lock_mode or self._lock:
683
# XXX: This should show something every time, and be suitable for
684
# headless operation and embedding
685
warn("branch %r was not explicitly unlocked" % self)
688
# TODO: It might be best to do this somewhere else,
689
# but it is nice for a Branch object to automatically
690
# cache it's information.
691
# Alternatively, we could have the Transport objects cache requests
692
# See the earlier discussion about how major objects (like Branch)
693
# should never expect their __del__ function to run.
694
if hasattr(self, 'cache_root') and self.cache_root is not None:
696
shutil.rmtree(self.cache_root)
699
self.cache_root = None
701
2121
def _get_base(self):
703
return self._transport.base
2122
"""Returns the directory containing the control directory."""
706
2125
base = property(_get_base, doc="The URL for the root of this branch.")
708
def _finish_transaction(self):
709
"""Exit the current transaction."""
710
if self._transaction is None:
711
raise errors.LockError('Branch %s is not in a transaction' %
713
transaction = self._transaction
714
self._transaction = None
717
def get_transaction(self):
718
"""See Branch.get_transaction."""
719
if self._transaction is None:
720
return transactions.PassThroughTransaction()
722
return self._transaction
724
def _set_transaction(self, new_transaction):
725
"""Set a new active transaction."""
726
if self._transaction is not None:
727
raise errors.LockError('Branch %s is in a transaction already.' %
729
self._transaction = new_transaction
731
def lock_write(self):
732
mutter("lock write: %s (%s)", self, self._lock_count)
733
# TODO: Upgrade locking to support using a Transport,
734
# and potentially a remote locking protocol
736
if self._lock_mode != 'w':
737
raise LockError("can't upgrade to a write lock from %r" %
739
self._lock_count += 1
741
self._lock = self._transport.lock_write(
742
self._rel_controlfilename('branch-lock'))
743
self._lock_mode = 'w'
745
self._set_transaction(transactions.PassThroughTransaction())
2127
def _get_config(self):
2128
return TransportConfig(self._transport, 'branch.conf')
2130
def is_locked(self):
2131
return self.control_files.is_locked()
2133
def lock_write(self, token=None):
2134
# All-in-one needs to always unlock/lock.
2135
repo_control = getattr(self.repository, 'control_files', None)
2136
if self.control_files == repo_control or not self.is_locked():
2137
self.repository.lock_write()
2142
return self.control_files.lock_write(token=token)
2145
self.repository.unlock()
747
2148
def lock_read(self):
748
mutter("lock read: %s (%s)", self, self._lock_count)
750
assert self._lock_mode in ('r', 'w'), \
751
"invalid lock mode %r" % self._lock_mode
752
self._lock_count += 1
2149
# All-in-one needs to always unlock/lock.
2150
repo_control = getattr(self.repository, 'control_files', None)
2151
if self.control_files == repo_control or not self.is_locked():
2152
self.repository.lock_read()
754
self._lock = self._transport.lock_read(
755
self._rel_controlfilename('branch-lock'))
756
self._lock_mode = 'r'
758
self._set_transaction(transactions.ReadOnlyTransaction())
759
# 5K may be excessive, but hey, its a knob.
760
self.get_transaction().set_cache_size(5000)
2157
self.control_files.lock_read()
2160
self.repository.unlock()
762
2163
def unlock(self):
763
mutter("unlock: %s (%s)", self, self._lock_count)
764
if not self._lock_mode:
765
raise LockError('branch %r is not locked' % (self))
767
if self._lock_count > 1:
768
self._lock_count -= 1
770
self._finish_transaction()
773
self._lock_mode = self._lock_count = None
775
def abspath(self, name):
776
"""See Branch.abspath."""
777
return self._transport.abspath(name)
779
def _rel_controlfilename(self, file_or_path):
780
if not isinstance(file_or_path, basestring):
781
file_or_path = '/'.join(file_or_path)
782
if file_or_path == '':
784
return bzrlib.transport.urlescape(bzrlib.BZRDIR + '/' + file_or_path)
786
def controlfilename(self, file_or_path):
787
"""See Branch.controlfilename."""
788
return self._transport.abspath(self._rel_controlfilename(file_or_path))
790
def controlfile(self, file_or_path, mode='r'):
791
"""See Branch.controlfile."""
794
relpath = self._rel_controlfilename(file_or_path)
795
#TODO: codecs.open() buffers linewise, so it was overloaded with
796
# a much larger buffer, do we need to do the same for getreader/getwriter?
798
return self._transport.get(relpath)
800
raise BzrError("Branch.controlfile(mode='wb') is not supported, use put_controlfiles")
802
# XXX: Do we really want errors='replace'? Perhaps it should be
803
# an error, or at least reported, if there's incorrectly-encoded
804
# data inside a file.
805
# <https://launchpad.net/products/bzr/+bug/3823>
806
return codecs.getreader('utf-8')(self._transport.get(relpath), errors='replace')
808
raise BzrError("Branch.controlfile(mode='w') is not supported, use put_controlfiles")
810
raise BzrError("invalid controlfile mode %r" % mode)
812
def put_controlfile(self, path, f, encode=True):
813
"""See Branch.put_controlfile."""
814
self.put_controlfiles([(path, f)], encode=encode)
816
def put_controlfiles(self, files, encode=True):
817
"""See Branch.put_controlfiles."""
820
for path, f in files:
822
if isinstance(f, basestring):
823
f = f.encode('utf-8', 'replace')
825
f = codecs.getwriter('utf-8')(f, errors='replace')
826
path = self._rel_controlfilename(path)
827
ctrl_files.append((path, f))
828
self._transport.put_multi(ctrl_files)
830
def _make_control(self):
831
from bzrlib.inventory import Inventory
832
from bzrlib.weavefile import write_weave_v5
833
from bzrlib.weave import Weave
835
# Create an empty inventory
837
# if we want per-tree root ids then this is the place to set
838
# them; they're not needed for now and so ommitted for
840
bzrlib.xml5.serializer_v5.write_inventory(Inventory(), sio)
841
empty_inv = sio.getvalue()
843
bzrlib.weavefile.write_weave_v5(Weave(), sio)
844
empty_weave = sio.getvalue()
846
dirs = [[], 'revision-store', 'weaves']
848
"This is a Bazaar-NG control directory.\n"
849
"Do not change any files in this directory.\n"),
850
('branch-format', BZR_BRANCH_FORMAT_6),
851
('revision-history', ''),
854
('pending-merges', ''),
855
('inventory', empty_inv),
856
('inventory.weave', empty_weave),
857
('ancestry.weave', empty_weave)
859
cfn = self._rel_controlfilename
860
self._transport.mkdir_multi([cfn(d) for d in dirs])
861
self.put_controlfiles(files)
862
mutter('created control directory in ' + self._transport.base)
864
def _check_format(self, relax_version_check):
865
"""Check this branch format is supported.
867
The format level is stored, as an integer, in
868
self._branch_format for code that needs to check it later.
870
In the future, we might need different in-memory Branch
871
classes to support downlevel branches. But not yet.
874
fmt = self.controlfile('branch-format', 'r').read()
876
raise NotBranchError(path=self.base)
877
mutter("got branch format %r", fmt)
878
if fmt == BZR_BRANCH_FORMAT_6:
879
self._branch_format = 6
880
elif fmt == BZR_BRANCH_FORMAT_5:
881
self._branch_format = 5
882
elif fmt == BZR_BRANCH_FORMAT_4:
883
self._branch_format = 4
885
if (not relax_version_check
886
and self._branch_format not in (5, 6)):
887
raise errors.UnsupportedFormatError(
888
'sorry, branch format %r not supported' % fmt,
889
['use a different bzr version',
890
'or remove the .bzr directory'
891
' and "bzr init" again'])
893
def get_root_id(self):
894
"""See Branch.get_root_id."""
895
inv = self.get_inventory(self.last_revision())
896
return inv.root.file_id
899
def set_root_id(self, file_id):
900
"""See Branch.set_root_id."""
901
inv = self.working_tree().read_working_inventory()
902
orig_root_id = inv.root.file_id
903
del inv._byid[inv.root.file_id]
904
inv.root.file_id = file_id
905
inv._byid[inv.root.file_id] = inv.root
908
if entry.parent_id in (None, orig_root_id):
909
entry.parent_id = inv.root.file_id
910
self._write_inventory(inv)
913
def add(self, files, ids=None):
914
"""See Branch.add."""
915
# TODO: Re-adding a file that is removed in the working copy
916
# should probably put it back with the previous ID.
917
if isinstance(files, basestring):
918
assert(ids is None or isinstance(ids, basestring))
924
ids = [None] * len(files)
2165
self.control_files.unlock()
2167
# All-in-one needs to always unlock/lock.
2168
repo_control = getattr(self.repository, 'control_files', None)
2169
if (self.control_files == repo_control or
2170
not self.control_files.is_locked()):
2171
self.repository.unlock()
2172
if not self.control_files.is_locked():
2173
# we just released the lock
2174
self._clear_cached_state()
2176
def peek_lock_mode(self):
2177
if self.control_files._lock_count == 0:
926
assert(len(ids) == len(files))
928
inv = self.working_tree().read_working_inventory()
929
for f,file_id in zip(files, ids):
930
if is_control_file(f):
931
raise BzrError("cannot add control file %s" % quotefn(f))
936
raise BzrError("cannot add top-level %r" % f)
938
fullpath = os.path.normpath(self.abspath(f))
941
kind = file_kind(fullpath)
943
# maybe something better?
944
raise BzrError('cannot add: not a regular file, symlink or directory: %s' % quotefn(f))
946
if not InventoryEntry.versionable_kind(kind):
947
raise BzrError('cannot add: not a versionable file ('
948
'i.e. regular file, symlink or directory): %s' % quotefn(f))
951
file_id = gen_file_id(f)
952
inv.add_path(f, kind=kind, file_id=file_id)
954
mutter("add file %s file_id:{%s} kind=%r" % (f, file_id, kind))
956
self.working_tree()._write_inventory(inv)
2180
return self.control_files._lock_mode
2182
def get_physical_lock_status(self):
2183
return self.control_files.get_physical_lock_status()
958
2185
@needs_read_lock
959
def print_file(self, file, revno):
2186
def print_file(self, file, revision_id):
960
2187
"""See Branch.print_file."""
961
tree = self.revision_tree(self.get_rev_id(revno))
962
# use inventory as it was in that revision
963
file_id = tree.inventory.path2id(file)
965
raise BzrError("%r is not present in revision %s" % (file, revno))
966
tree.print_file(file_id)
969
"""See Branch.unknowns."""
970
return self.working_tree().unknowns()
973
def append_revision(self, *revision_ids):
974
"""See Branch.append_revision."""
975
for revision_id in revision_ids:
976
mutter("add {%s} to revision-history" % revision_id)
977
rev_history = self.revision_history()
978
rev_history.extend(revision_ids)
979
self.set_revision_history(rev_history)
2188
return self.repository.print_file(file, revision_id)
2190
def _write_revision_history(self, history):
2191
"""Factored out of set_revision_history.
2193
This performs the actual writing to disk.
2194
It is intended to be called by BzrBranch5.set_revision_history."""
2195
self._transport.put_bytes(
2196
'revision-history', '\n'.join(history),
2197
mode=self.bzrdir._get_file_mode())
981
2199
@needs_write_lock
982
2200
def set_revision_history(self, rev_history):
983
2201
"""See Branch.set_revision_history."""
984
self.put_controlfile('revision-history', '\n'.join(rev_history))
986
def has_revision(self, revision_id):
987
"""See Branch.has_revision."""
988
return (revision_id is None
989
or self.revision_store.has_id(revision_id))
992
def get_revision_xml_file(self, revision_id):
993
"""See Branch.get_revision_xml_file."""
994
if not revision_id or not isinstance(revision_id, basestring):
995
raise InvalidRevisionId(revision_id=revision_id, branch=self)
997
return self.revision_store.get(revision_id)
998
except (IndexError, KeyError):
999
raise bzrlib.errors.NoSuchRevision(self, revision_id)
1002
get_revision_xml = get_revision_xml_file
1004
def get_revision_xml(self, revision_id):
1005
"""See Branch.get_revision_xml."""
1006
return self.get_revision_xml_file(revision_id).read()
1009
def get_revision(self, revision_id):
1010
"""See Branch.get_revision."""
1011
xml_file = self.get_revision_xml_file(revision_id)
1014
r = bzrlib.xml5.serializer_v5.read_revision(xml_file)
1015
except SyntaxError, e:
1016
raise bzrlib.errors.BzrError('failed to unpack revision_xml',
1020
assert r.revision_id == revision_id
1023
def get_revision_sha1(self, revision_id):
1024
"""See Branch.get_revision_sha1."""
1025
# In the future, revision entries will be signed. At that
1026
# point, it is probably best *not* to include the signature
1027
# in the revision hash. Because that lets you re-sign
1028
# the revision, (add signatures/remove signatures) and still
1029
# have all hash pointers stay consistent.
1030
# But for now, just hash the contents.
1031
return bzrlib.osutils.sha_file(self.get_revision_xml_file(revision_id))
1033
def get_ancestry(self, revision_id):
1034
"""See Branch.get_ancestry."""
1035
if revision_id is None:
1037
w = self._get_inventory_weave()
1038
return [None] + map(w.idx_to_name,
1039
w.inclusions([w.lookup(revision_id)]))
1041
def _get_inventory_weave(self):
1042
return self.control_weaves.get_weave('inventory',
1043
self.get_transaction())
1045
def get_inventory(self, revision_id):
1046
"""See Branch.get_inventory."""
1047
xml = self.get_inventory_xml(revision_id)
1048
return bzrlib.xml5.serializer_v5.read_inventory_from_string(xml)
1050
def get_inventory_xml(self, revision_id):
1051
"""See Branch.get_inventory_xml."""
1053
assert isinstance(revision_id, basestring), type(revision_id)
1054
iw = self._get_inventory_weave()
1055
return iw.get_text(iw.lookup(revision_id))
1057
raise bzrlib.errors.HistoryMissing(self, 'inventory', revision_id)
1059
def get_inventory_sha1(self, revision_id):
1060
"""See Branch.get_inventory_sha1."""
1061
return self.get_revision(revision_id).inventory_sha1
1063
def get_revision_inventory(self, revision_id):
1064
"""See Branch.get_revision_inventory."""
1065
# TODO: Unify this with get_inventory()
1066
# bzr 0.0.6 and later imposes the constraint that the inventory_id
1067
# must be the same as its revision, so this is trivial.
1068
if revision_id == None:
1069
# This does not make sense: if there is no revision,
1070
# then it is the current tree inventory surely ?!
1071
# and thus get_root_id() is something that looks at the last
1072
# commit on the branch, and the get_root_id is an inventory check.
1073
raise NotImplementedError
1074
# return Inventory(self.get_root_id())
2202
if 'evil' in debug.debug_flags:
2203
mutter_callsite(3, "set_revision_history scales with history.")
2204
check_not_reserved_id = _mod_revision.check_not_reserved_id
2205
for rev_id in rev_history:
2206
check_not_reserved_id(rev_id)
2207
if Branch.hooks['post_change_branch_tip']:
2208
# Don't calculate the last_revision_info() if there are no hooks
2210
old_revno, old_revid = self.last_revision_info()
2211
if len(rev_history) == 0:
2212
revid = _mod_revision.NULL_REVISION
1076
return self.get_inventory(revision_id)
1079
def revision_history(self):
1080
"""See Branch.revision_history."""
1081
transaction = self.get_transaction()
1082
history = transaction.map.find_revision_history()
1083
if history is not None:
1084
mutter("cache hit for revision-history in %s", self)
1085
return list(history)
1086
history = [l.rstrip('\r\n') for l in
1087
self.controlfile('revision-history', 'r').readlines()]
1088
transaction.map.add_revision_history(history)
1089
# this call is disabled because revision_history is
1090
# not really an object yet, and the transaction is for objects.
1091
# transaction.register_clean(history, precious=True)
1092
return list(history)
1094
def update_revisions(self, other, stop_revision=None):
1095
"""See Branch.update_revisions."""
1096
from bzrlib.fetch import greedy_fetch
1097
if stop_revision is None:
1098
stop_revision = other.last_revision()
1099
### Should this be checking is_ancestor instead of revision_history?
1100
if (stop_revision is not None and
1101
stop_revision in self.revision_history()):
2214
revid = rev_history[-1]
2215
self._run_pre_change_branch_tip_hooks(len(rev_history), revid)
2216
self._write_revision_history(rev_history)
2217
self._clear_cached_state()
2218
self._cache_revision_history(rev_history)
2219
for hook in Branch.hooks['set_rh']:
2220
hook(self, rev_history)
2221
if Branch.hooks['post_change_branch_tip']:
2222
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2224
def _synchronize_history(self, destination, revision_id):
2225
"""Synchronize last revision and revision history between branches.
2227
This version is most efficient when the destination is also a
2228
BzrBranch5, but works for BzrBranch6 as long as the revision
2229
history is the true lefthand parent history, and all of the revisions
2230
are in the destination's repository. If not, set_revision_history
2233
:param destination: The branch to copy the history into
2234
:param revision_id: The revision-id to truncate history at. May
2235
be None to copy complete history.
2237
if not isinstance(destination._format, BzrBranchFormat5):
2238
super(BzrBranch, self)._synchronize_history(
2239
destination, revision_id)
1103
greedy_fetch(to_branch=self, from_branch=other,
1104
revision=stop_revision)
1105
pullable_revs = self.pullable_revisions(other, stop_revision)
1106
if len(pullable_revs) > 0:
1107
self.append_revision(*pullable_revs)
1109
def pullable_revisions(self, other, stop_revision):
1110
"""See Branch.pullable_revisions."""
1111
other_revno = other.revision_id_to_revno(stop_revision)
1113
return self.missing_revisions(other, other_revno)
1114
except DivergedBranches, e:
1116
pullable_revs = get_intervening_revisions(self.last_revision(),
1117
stop_revision, self)
1118
assert self.last_revision() not in pullable_revs
1119
return pullable_revs
1120
except bzrlib.errors.NotAncestor:
1121
if is_ancestor(self.last_revision(), stop_revision, self):
1126
def revision_id_to_revno(self, revision_id):
1127
"""Given a revision id, return its revno"""
1128
if revision_id is None:
1130
history = self.revision_history()
1132
return history.index(revision_id) + 1
1134
raise bzrlib.errors.NoSuchRevision(self, revision_id)
1136
def get_rev_id(self, revno, history=None):
1137
"""Find the revision id of the specified revno."""
1141
history = self.revision_history()
1142
elif revno <= 0 or revno > len(history):
1143
raise bzrlib.errors.NoSuchRevision(self, revno)
1144
return history[revno - 1]
1146
def revision_tree(self, revision_id):
1147
"""See Branch.revision_tree."""
1148
# TODO: refactor this to use an existing revision object
1149
# so we don't need to read it in twice.
1150
if revision_id == None or revision_id == NULL_REVISION:
2241
if revision_id == _mod_revision.NULL_REVISION:
1153
inv = self.get_revision_inventory(revision_id)
1154
return RevisionTree(self.weave_store, inv, revision_id)
1156
def working_tree(self):
1157
"""See Branch.working_tree."""
1158
from bzrlib.workingtree import WorkingTree
1159
# TODO: In the future, perhaps WorkingTree should utilize Transport
1160
# RobertCollins 20051003 - I don't think it should - working trees are
1161
# much more complex to keep consistent than our careful .bzr subset.
1162
# instead, we should say that working trees are local only, and optimise
1164
if self._transport.base.find('://') != -1:
1165
raise NoWorkingTree(self.base)
1166
return WorkingTree(self.base, branch=self)
1169
def pull(self, source, overwrite=False):
1170
"""See Branch.pull."""
1174
self.update_revisions(source)
1175
except DivergedBranches:
1178
self.set_revision_history(source.revision_history())
1183
def rename_one(self, from_rel, to_rel):
1184
"""See Branch.rename_one."""
1185
tree = self.working_tree()
1186
inv = tree.inventory
1187
if not tree.has_filename(from_rel):
1188
raise BzrError("can't rename: old working file %r does not exist" % from_rel)
1189
if tree.has_filename(to_rel):
1190
raise BzrError("can't rename: new working file %r already exists" % to_rel)
1192
file_id = inv.path2id(from_rel)
1194
raise BzrError("can't rename: old name %r is not versioned" % from_rel)
1196
if inv.path2id(to_rel):
1197
raise BzrError("can't rename: new name %r is already versioned" % to_rel)
1199
to_dir, to_tail = os.path.split(to_rel)
1200
to_dir_id = inv.path2id(to_dir)
1201
if to_dir_id == None and to_dir != '':
1202
raise BzrError("can't determine destination directory id for %r" % to_dir)
1204
mutter("rename_one:")
1205
mutter(" file_id {%s}" % file_id)
1206
mutter(" from_rel %r" % from_rel)
1207
mutter(" to_rel %r" % to_rel)
1208
mutter(" to_dir %r" % to_dir)
1209
mutter(" to_dir_id {%s}" % to_dir_id)
1211
inv.rename(file_id, to_dir_id, to_tail)
1213
from_abs = self.abspath(from_rel)
1214
to_abs = self.abspath(to_rel)
1216
rename(from_abs, to_abs)
1218
raise BzrError("failed to rename %r to %r: %s"
1219
% (from_abs, to_abs, e[1]),
1220
["rename rolled back"])
1222
self.working_tree()._write_inventory(inv)
1225
def move(self, from_paths, to_name):
1226
"""See Branch.move."""
1228
## TODO: Option to move IDs only
1229
assert not isinstance(from_paths, basestring)
1230
tree = self.working_tree()
1231
inv = tree.inventory
1232
to_abs = self.abspath(to_name)
1233
if not isdir(to_abs):
1234
raise BzrError("destination %r is not a directory" % to_abs)
1235
if not tree.has_filename(to_name):
1236
raise BzrError("destination %r not in working directory" % to_abs)
1237
to_dir_id = inv.path2id(to_name)
1238
if to_dir_id == None and to_name != '':
1239
raise BzrError("destination %r is not a versioned directory" % to_name)
1240
to_dir_ie = inv[to_dir_id]
1241
if to_dir_ie.kind not in ('directory', 'root_directory'):
1242
raise BzrError("destination %r is not a directory" % to_abs)
1244
to_idpath = inv.get_idpath(to_dir_id)
1246
for f in from_paths:
1247
if not tree.has_filename(f):
1248
raise BzrError("%r does not exist in working tree" % f)
1249
f_id = inv.path2id(f)
1251
raise BzrError("%r is not versioned" % f)
1252
name_tail = splitpath(f)[-1]
1253
dest_path = appendpath(to_name, name_tail)
1254
if tree.has_filename(dest_path):
1255
raise BzrError("destination %r already exists" % dest_path)
1256
if f_id in to_idpath:
1257
raise BzrError("can't move %r to a subdirectory of itself" % f)
1259
# OK, so there's a race here, it's possible that someone will
1260
# create a file in this interval and then the rename might be
1261
# left half-done. But we should have caught most problems.
1263
for f in from_paths:
1264
name_tail = splitpath(f)[-1]
1265
dest_path = appendpath(to_name, name_tail)
1266
result.append((f, dest_path))
1267
inv.rename(inv.path2id(f), to_dir_id, name_tail)
1269
rename(self.abspath(f), self.abspath(dest_path))
1271
raise BzrError("failed to rename %r to %r: %s" % (f, dest_path, e[1]),
1272
["rename rolled back"])
1274
self.working_tree()._write_inventory(inv)
1277
def get_parent(self):
1278
"""See Branch.get_parent."""
2244
new_history = self.revision_history()
2245
if revision_id is not None and new_history != []:
2247
new_history = new_history[:new_history.index(revision_id) + 1]
2249
rev = self.repository.get_revision(revision_id)
2250
new_history = rev.get_history(self.repository)[1:]
2251
destination.set_revision_history(new_history)
2254
def set_last_revision_info(self, revno, revision_id):
2255
"""Set the last revision of this branch.
2257
The caller is responsible for checking that the revno is correct
2258
for this revision id.
2260
It may be possible to set the branch last revision to an id not
2261
present in the repository. However, branches can also be
2262
configured to check constraints on history, in which case this may not
2265
revision_id = _mod_revision.ensure_null(revision_id)
2266
# this old format stores the full history, but this api doesn't
2267
# provide it, so we must generate, and might as well check it's
2269
history = self._lefthand_history(revision_id)
2270
if len(history) != revno:
2271
raise AssertionError('%d != %d' % (len(history), revno))
2272
self.set_revision_history(history)
2274
def _gen_revision_history(self):
2275
history = self._transport.get_bytes('revision-history').split('\n')
2276
if history[-1:] == ['']:
2277
# There shouldn't be a trailing newline, but just in case.
2282
def generate_revision_history(self, revision_id, last_rev=None,
2284
"""Create a new revision history that will finish with revision_id.
2286
:param revision_id: the new tip to use.
2287
:param last_rev: The previous last_revision. If not None, then this
2288
must be a ancestory of revision_id, or DivergedBranches is raised.
2289
:param other_branch: The other branch that DivergedBranches should
2290
raise with respect to.
2292
self.set_revision_history(self._lefthand_history(revision_id,
2293
last_rev, other_branch))
2295
def basis_tree(self):
2296
"""See Branch.basis_tree."""
2297
return self.repository.revision_tree(self.last_revision())
2299
def _get_parent_location(self):
1280
2300
_locs = ['parent', 'pull', 'x-pull']
1281
2301
for l in _locs:
1283
return self.controlfile(l, 'r').read().strip('\n')
1285
if e.errno != errno.ENOENT:
2303
return self._transport.get_bytes(l).strip('\n')
2304
except errors.NoSuchFile:
1289
def get_push_location(self):
1290
"""See Branch.get_push_location."""
1291
config = bzrlib.config.BranchConfig(self)
1292
push_loc = config.get_user_option('push_location')
2308
def _basic_push(self, target, overwrite, stop_revision):
2309
"""Basic implementation of push without bound branches or hooks.
2311
Must be called with source read locked and target write locked.
2313
result = BranchPushResult()
2314
result.source_branch = self
2315
result.target_branch = target
2316
result.old_revno, result.old_revid = target.last_revision_info()
2317
self.update_references(target)
2318
if result.old_revid != self.last_revision():
2319
# We assume that during 'push' this repository is closer than
2321
graph = self.repository.get_graph(target.repository)
2322
target.update_revisions(self, stop_revision,
2323
overwrite=overwrite, graph=graph)
2324
if self._push_should_merge_tags():
2325
result.tag_conflicts = self.tags.merge_to(target.tags,
2327
result.new_revno, result.new_revid = target.last_revision_info()
2330
def get_stacked_on_url(self):
2331
raise errors.UnstackableBranchFormat(self._format, self.base)
1295
2333
def set_push_location(self, location):
1296
2334
"""See Branch.set_push_location."""
1297
config = bzrlib.config.LocationConfig(self.base)
1298
config.set_user_option('push_location', location)
1301
def set_parent(self, url):
1302
"""See Branch.set_parent."""
1303
# TODO: Maybe delete old location files?
1304
from bzrlib.atomicfile import AtomicFile
1305
f = AtomicFile(self.controlfilename('parent'))
2335
self.get_config().set_user_option(
2336
'push_location', location,
2337
store=_mod_config.STORE_LOCATION_NORECURSE)
2339
def _set_parent_location(self, url):
2341
self._transport.delete('parent')
2343
self._transport.put_bytes('parent', url + '\n',
2344
mode=self.bzrdir._get_file_mode())
2347
class BzrBranch5(BzrBranch):
2348
"""A format 5 branch. This supports new features over plain branches.
2350
It has support for a master_branch which is the data for bound branches.
2353
def get_bound_location(self):
2355
return self._transport.get_bytes('bound')[:-1]
2356
except errors.NoSuchFile:
2360
def get_master_branch(self, possible_transports=None):
2361
"""Return the branch we are bound to.
2363
:return: Either a Branch, or None
2365
This could memoise the branch, but if thats done
2366
it must be revalidated on each new lock.
2367
So for now we just don't memoise it.
2368
# RBC 20060304 review this decision.
2370
bound_loc = self.get_bound_location()
2374
return Branch.open(bound_loc,
2375
possible_transports=possible_transports)
2376
except (errors.NotBranchError, errors.ConnectionError), e:
2377
raise errors.BoundBranchConnectionFailure(
2381
def set_bound_location(self, location):
2382
"""Set the target where this branch is bound to.
2384
:param location: URL to the target branch
2387
self._transport.put_bytes('bound', location+'\n',
2388
mode=self.bzrdir._get_file_mode())
2391
self._transport.delete('bound')
2392
except errors.NoSuchFile:
2397
def bind(self, other):
2398
"""Bind this branch to the branch other.
2400
This does not push or pull data between the branches, though it does
2401
check for divergence to raise an error when the branches are not
2402
either the same, or one a prefix of the other. That behaviour may not
2403
be useful, so that check may be removed in future.
2405
:param other: The branch to bind to
2408
# TODO: jam 20051230 Consider checking if the target is bound
2409
# It is debatable whether you should be able to bind to
2410
# a branch which is itself bound.
2411
# Committing is obviously forbidden,
2412
# but binding itself may not be.
2413
# Since we *have* to check at commit time, we don't
2414
# *need* to check here
2416
# we want to raise diverged if:
2417
# last_rev is not in the other_last_rev history, AND
2418
# other_last_rev is not in our history, and do it without pulling
2420
self.set_bound_location(other.base)
2424
"""If bound, unbind"""
2425
return self.set_bound_location(None)
2428
def update(self, possible_transports=None):
2429
"""Synchronise this branch with the master branch if any.
2431
:return: None or the last_revision that was pivoted out during the
2434
master = self.get_master_branch(possible_transports)
2435
if master is not None:
2436
old_tip = _mod_revision.ensure_null(self.last_revision())
2437
self.pull(master, overwrite=True)
2438
if self.repository.get_graph().is_ancestor(old_tip,
2439
_mod_revision.ensure_null(self.last_revision())):
2445
class BzrBranch8(BzrBranch5):
2446
"""A branch that stores tree-reference locations."""
2448
def _open_hook(self):
2449
if self._ignore_fallbacks:
2452
url = self.get_stacked_on_url()
2453
except (errors.UnstackableRepositoryFormat, errors.NotStacked,
2454
errors.UnstackableBranchFormat):
2457
for hook in Branch.hooks['transform_fallback_location']:
2458
url = hook(self, url)
2460
hook_name = Branch.hooks.get_hook_name(hook)
2461
raise AssertionError(
2462
"'transform_fallback_location' hook %s returned "
2463
"None, not a URL." % hook_name)
2464
self._activate_fallback_location(url)
2466
def __init__(self, *args, **kwargs):
2467
self._ignore_fallbacks = kwargs.get('ignore_fallbacks', False)
2468
super(BzrBranch8, self).__init__(*args, **kwargs)
2469
self._last_revision_info_cache = None
2470
self._reference_info = None
2472
def _clear_cached_state(self):
2473
super(BzrBranch8, self)._clear_cached_state()
2474
self._last_revision_info_cache = None
2475
self._reference_info = None
2477
def _last_revision_info(self):
2478
revision_string = self._transport.get_bytes('last-revision')
2479
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
2480
revision_id = cache_utf8.get_cached_utf8(revision_id)
2482
return revno, revision_id
2484
def _write_last_revision_info(self, revno, revision_id):
2485
"""Simply write out the revision id, with no checks.
2487
Use set_last_revision_info to perform this safely.
2489
Does not update the revision_history cache.
2490
Intended to be called by set_last_revision_info and
2491
_write_revision_history.
2493
revision_id = _mod_revision.ensure_null(revision_id)
2494
out_string = '%d %s\n' % (revno, revision_id)
2495
self._transport.put_bytes('last-revision', out_string,
2496
mode=self.bzrdir._get_file_mode())
2499
def set_last_revision_info(self, revno, revision_id):
2500
revision_id = _mod_revision.ensure_null(revision_id)
2501
old_revno, old_revid = self.last_revision_info()
2502
if self._get_append_revisions_only():
2503
self._check_history_violation(revision_id)
2504
self._run_pre_change_branch_tip_hooks(revno, revision_id)
2505
self._write_last_revision_info(revno, revision_id)
2506
self._clear_cached_state()
2507
self._last_revision_info_cache = revno, revision_id
2508
self._run_post_change_branch_tip_hooks(old_revno, old_revid)
2510
def _synchronize_history(self, destination, revision_id):
2511
"""Synchronize last revision and revision history between branches.
2513
:see: Branch._synchronize_history
2515
# XXX: The base Branch has a fast implementation of this method based
2516
# on set_last_revision_info, but BzrBranch/BzrBranch5 have a slower one
2517
# that uses set_revision_history. This class inherits from BzrBranch5,
2518
# but wants the fast implementation, so it calls
2519
# Branch._synchronize_history directly.
2520
Branch._synchronize_history(self, destination, revision_id)
2522
def _check_history_violation(self, revision_id):
2523
last_revision = _mod_revision.ensure_null(self.last_revision())
2524
if _mod_revision.is_null(last_revision):
2526
if last_revision not in self._lefthand_history(revision_id):
2527
raise errors.AppendRevisionsOnlyViolation(self.base)
2529
def _gen_revision_history(self):
2530
"""Generate the revision history from last revision
2532
last_revno, last_revision = self.last_revision_info()
2533
self._extend_partial_history(stop_index=last_revno-1)
2534
return list(reversed(self._partial_revision_history_cache))
2536
def _write_revision_history(self, history):
2537
"""Factored out of set_revision_history.
2539
This performs the actual writing to disk, with format-specific checks.
2540
It is intended to be called by BzrBranch5.set_revision_history.
2542
if len(history) == 0:
2543
last_revision = 'null:'
2545
if history != self._lefthand_history(history[-1]):
2546
raise errors.NotLefthandHistory(history)
2547
last_revision = history[-1]
2548
if self._get_append_revisions_only():
2549
self._check_history_violation(last_revision)
2550
self._write_last_revision_info(len(history), last_revision)
2553
def _set_parent_location(self, url):
2554
"""Set the parent branch"""
2555
self._set_config_location('parent_location', url, make_relative=True)
2558
def _get_parent_location(self):
2559
"""Set the parent branch"""
2560
return self._get_config_location('parent_location')
2563
def _set_all_reference_info(self, info_dict):
2564
"""Replace all reference info stored in a branch.
2566
:param info_dict: A dict of {file_id: (tree_path, branch_location)}
2569
writer = rio.RioWriter(s)
2570
for key, (tree_path, branch_location) in info_dict.iteritems():
2571
stanza = rio.Stanza(file_id=key, tree_path=tree_path,
2572
branch_location=branch_location)
2573
writer.write_stanza(stanza)
2574
self._transport.put_bytes('references', s.getvalue())
2575
self._reference_info = info_dict
2578
def _get_all_reference_info(self):
2579
"""Return all the reference info stored in a branch.
2581
:return: A dict of {file_id: (tree_path, branch_location)}
2583
if self._reference_info is not None:
2584
return self._reference_info
2585
rio_file = self._transport.get('references')
2587
stanzas = rio.read_stanzas(rio_file)
2588
info_dict = dict((s['file_id'], (s['tree_path'],
2589
s['branch_location'])) for s in stanzas)
1312
def tree_config(self):
1313
return TreeConfig(self)
1315
def check_revno(self, revno):
1317
Check whether a revno corresponds to any revision.
1318
Zero (the NULL revision) is considered valid.
1321
self.check_real_revno(revno)
1323
def check_real_revno(self, revno):
1325
Check whether a revno corresponds to a real revision.
1326
Zero (the NULL revision) is considered invalid
1328
if revno < 1 or revno > self.revno():
1329
raise InvalidRevisionNumber(revno)
1331
def sign_revision(self, revision_id, gpg_strategy):
1332
"""See Branch.sign_revision."""
1333
plaintext = Testament.from_revision(self, revision_id).as_short_text()
1334
self.store_revision_signature(gpg_strategy, plaintext, revision_id)
2592
self._reference_info = info_dict
2595
def set_reference_info(self, file_id, tree_path, branch_location):
2596
"""Set the branch location to use for a tree reference.
2598
:param file_id: The file-id of the tree reference.
2599
:param tree_path: The path of the tree reference in the tree.
2600
:param branch_location: The location of the branch to retrieve tree
2603
info_dict = self._get_all_reference_info()
2604
info_dict[file_id] = (tree_path, branch_location)
2605
if None in (tree_path, branch_location):
2606
if tree_path is not None:
2607
raise ValueError('tree_path must be None when branch_location'
2609
if branch_location is not None:
2610
raise ValueError('branch_location must be None when tree_path'
2612
del info_dict[file_id]
2613
self._set_all_reference_info(info_dict)
2615
def get_reference_info(self, file_id):
2616
"""Get the tree_path and branch_location for a tree reference.
2618
:return: a tuple of (tree_path, branch_location)
2620
return self._get_all_reference_info().get(file_id, (None, None))
2622
def reference_parent(self, file_id, path, possible_transports=None):
2623
"""Return the parent branch for a tree-reference file_id.
2625
:param file_id: The file_id of the tree reference
2626
:param path: The path of the file_id in the tree
2627
:return: A branch associated with the file_id
2629
branch_location = self.get_reference_info(file_id)[1]
2630
if branch_location is None:
2631
return Branch.reference_parent(self, file_id, path,
2632
possible_transports)
2633
branch_location = urlutils.join(self.base, branch_location)
2634
return Branch.open(branch_location,
2635
possible_transports=possible_transports)
2637
def set_push_location(self, location):
2638
"""See Branch.set_push_location."""
2639
self._set_config_location('push_location', location)
2641
def set_bound_location(self, location):
2642
"""See Branch.set_push_location."""
2644
config = self.get_config()
2645
if location is None:
2646
if config.get_user_option('bound') != 'True':
2649
config.set_user_option('bound', 'False', warn_masked=True)
2652
self._set_config_location('bound_location', location,
2654
config.set_user_option('bound', 'True', warn_masked=True)
2657
def _get_bound_location(self, bound):
2658
"""Return the bound location in the config file.
2660
Return None if the bound parameter does not match"""
2661
config = self.get_config()
2662
config_bound = (config.get_user_option('bound') == 'True')
2663
if config_bound != bound:
2665
return self._get_config_location('bound_location', config=config)
2667
def get_bound_location(self):
2668
"""See Branch.set_push_location."""
2669
return self._get_bound_location(True)
2671
def get_old_bound_location(self):
2672
"""See Branch.get_old_bound_location"""
2673
return self._get_bound_location(False)
2675
def get_stacked_on_url(self):
2676
# you can always ask for the URL; but you might not be able to use it
2677
# if the repo can't support stacking.
2678
## self._check_stackable_repo()
2679
stacked_url = self._get_config_location('stacked_on_location')
2680
if stacked_url is None:
2681
raise errors.NotStacked(self)
2684
def _get_append_revisions_only(self):
2685
value = self.get_config().get_user_option('append_revisions_only')
2686
return value == 'True'
1336
2688
@needs_write_lock
1337
def store_revision_signature(self, gpg_strategy, plaintext, revision_id):
1338
"""See Branch.store_revision_signature."""
1339
self.revision_store.add(StringIO(gpg_strategy.sign(plaintext)),
1343
class ScratchBranch(BzrBranch):
1344
"""Special test class: a branch that cleans up after itself.
1346
>>> b = ScratchBranch()
1350
>>> b._transport.__del__()
2689
def generate_revision_history(self, revision_id, last_rev=None,
2691
"""See BzrBranch5.generate_revision_history"""
2692
history = self._lefthand_history(revision_id, last_rev, other_branch)
2693
revno = len(history)
2694
self.set_last_revision_info(revno, revision_id)
2697
def get_rev_id(self, revno, history=None):
2698
"""Find the revision id of the specified revno."""
2700
return _mod_revision.NULL_REVISION
2702
last_revno, last_revision_id = self.last_revision_info()
2703
if revno <= 0 or revno > last_revno:
2704
raise errors.NoSuchRevision(self, revno)
2706
if history is not None:
2707
return history[revno - 1]
2709
index = last_revno - revno
2710
if len(self._partial_revision_history_cache) <= index:
2711
self._extend_partial_history(stop_index=index)
2712
if len(self._partial_revision_history_cache) > index:
2713
return self._partial_revision_history_cache[index]
2715
raise errors.NoSuchRevision(self, revno)
2718
def revision_id_to_revno(self, revision_id):
2719
"""Given a revision id, return its revno"""
2720
if _mod_revision.is_null(revision_id):
2723
index = self._partial_revision_history_cache.index(revision_id)
2725
self._extend_partial_history(stop_revision=revision_id)
2726
index = len(self._partial_revision_history_cache) - 1
2727
if self._partial_revision_history_cache[index] != revision_id:
2728
raise errors.NoSuchRevision(self, revision_id)
2729
return self.revno() - index
2732
class BzrBranch7(BzrBranch8):
2733
"""A branch with support for a fallback repository."""
2735
def set_reference_info(self, file_id, tree_path, branch_location):
2736
Branch.set_reference_info(self, file_id, tree_path, branch_location)
2738
def get_reference_info(self, file_id):
2739
Branch.get_reference_info(self, file_id)
2741
def reference_parent(self, file_id, path, possible_transports=None):
2742
return Branch.reference_parent(self, file_id, path,
2743
possible_transports)
2746
class BzrBranch6(BzrBranch7):
2747
"""See BzrBranchFormat6 for the capabilities of this branch.
2749
This subclass of BzrBranch7 disables the new features BzrBranch7 added,
1355
def __init__(self, files=[], dirs=[], transport=None):
1356
"""Make a test branch.
1358
This creates a temporary directory and runs init-tree in it.
1360
If any files are listed, they are created in the working copy.
1362
if transport is None:
1363
transport = bzrlib.transport.local.ScratchTransport()
1364
super(ScratchBranch, self).__init__(transport, init=True)
1366
super(ScratchBranch, self).__init__(transport)
1369
self._transport.mkdir(d)
1372
self._transport.put(f, 'content of %s' % f)
1377
>>> orig = ScratchBranch(files=["file1", "file2"])
1378
>>> clone = orig.clone()
1379
>>> if os.name != 'nt':
1380
... os.path.samefile(orig.base, clone.base)
1382
... orig.base == clone.base
1385
>>> os.path.isfile(os.path.join(clone.base, "file1"))
1388
from shutil import copytree
1389
from tempfile import mkdtemp
1392
copytree(self.base, base, symlinks=True)
1393
return ScratchBranch(
1394
transport=bzrlib.transport.local.ScratchTransport(base))
2753
def get_stacked_on_url(self):
2754
raise errors.UnstackableBranchFormat(self._format, self.base)
1397
2757
######################################################################
1401
def is_control_file(filename):
1402
## FIXME: better check
1403
filename = os.path.normpath(filename)
1404
while filename != '':
1405
head, tail = os.path.split(filename)
1406
## mutter('check %r for control file' % ((head, tail), ))
1407
if tail == bzrlib.BZRDIR:
1409
if filename == head:
1416
def gen_file_id(name):
1417
"""Return new file id.
1419
This should probably generate proper UUIDs, but for the moment we
1420
cope with just randomness because running uuidgen every time is
1423
from binascii import hexlify
1424
from time import time
1426
# get last component
1427
idx = name.rfind('/')
1429
name = name[idx+1 : ]
1430
idx = name.rfind('\\')
1432
name = name[idx+1 : ]
1434
# make it not a hidden file
1435
name = name.lstrip('.')
1437
# remove any wierd characters; we don't escape them but rather
1438
# just pull them out
1439
name = re.sub(r'[^\w.]', '', name)
1441
s = hexlify(rand_bytes(8))
1442
return '-'.join((name, compact_date(time()), s))
1446
"""Return a new tree-root file id."""
1447
return gen_file_id('TREE_ROOT')
2758
# results of operations
2761
class _Result(object):
2763
def _show_tag_conficts(self, to_file):
2764
if not getattr(self, 'tag_conflicts', None):
2766
to_file.write('Conflicting tags:\n')
2767
for name, value1, value2 in self.tag_conflicts:
2768
to_file.write(' %s\n' % (name, ))
2771
class PullResult(_Result):
2772
"""Result of a Branch.pull operation.
2774
:ivar old_revno: Revision number before pull.
2775
:ivar new_revno: Revision number after pull.
2776
:ivar old_revid: Tip revision id before pull.
2777
:ivar new_revid: Tip revision id after pull.
2778
:ivar source_branch: Source (local) branch object. (read locked)
2779
:ivar master_branch: Master branch of the target, or the target if no
2781
:ivar local_branch: target branch if there is a Master, else None
2782
:ivar target_branch: Target/destination branch object. (write locked)
2783
:ivar tag_conflicts: A list of tag conflicts, see BasicTags.merge_to
2787
# DEPRECATED: pull used to return the change in revno
2788
return self.new_revno - self.old_revno
2790
def report(self, to_file):
2792
if self.old_revid == self.new_revid:
2793
to_file.write('No revisions to pull.\n')
2795
to_file.write('Now on revision %d.\n' % self.new_revno)
2796
self._show_tag_conficts(to_file)
2799
class BranchPushResult(_Result):
2800
"""Result of a Branch.push operation.
2802
:ivar old_revno: Revision number (eg 10) of the target before push.
2803
:ivar new_revno: Revision number (eg 12) of the target after push.
2804
:ivar old_revid: Tip revision id (eg joe@foo.com-1234234-aoeua34) of target
2806
:ivar new_revid: Tip revision id (eg joe@foo.com-5676566-boa234a) of target
2808
:ivar source_branch: Source branch object that the push was from. This is
2809
read locked, and generally is a local (and thus low latency) branch.
2810
:ivar master_branch: If target is a bound branch, the master branch of
2811
target, or target itself. Always write locked.
2812
:ivar target_branch: The direct Branch where data is being sent (write
2814
:ivar local_branch: If the target is a bound branch this will be the
2815
target, otherwise it will be None.
2819
# DEPRECATED: push used to return the change in revno
2820
return self.new_revno - self.old_revno
2822
def report(self, to_file):
2823
"""Write a human-readable description of the result."""
2824
if self.old_revid == self.new_revid:
2825
note('No new revisions to push.')
2827
note('Pushed up to revision %d.' % self.new_revno)
2828
self._show_tag_conficts(to_file)
2831
class BranchCheckResult(object):
2832
"""Results of checking branch consistency.
2837
def __init__(self, branch):
2838
self.branch = branch
2841
def report_results(self, verbose):
2842
"""Report the check results via trace.note.
2844
:param verbose: Requests more detailed display of what was checked,
2847
note('checked branch %s format %s', self.branch.base,
2848
self.branch._format)
2849
for error in self.errors:
2850
note('found error:%s', error)
2853
class Converter5to6(object):
2854
"""Perform an in-place upgrade of format 5 to format 6"""
2856
def convert(self, branch):
2857
# Data for 5 and 6 can peacefully coexist.
2858
format = BzrBranchFormat6()
2859
new_branch = format.open(branch.bzrdir, _found=True)
2861
# Copy source data into target
2862
new_branch._write_last_revision_info(*branch.last_revision_info())
2863
new_branch.set_parent(branch.get_parent())
2864
new_branch.set_bound_location(branch.get_bound_location())
2865
new_branch.set_push_location(branch.get_push_location())
2867
# New branch has no tags by default
2868
new_branch.tags._set_tag_dict({})
2870
# Copying done; now update target format
2871
new_branch._transport.put_bytes('format',
2872
format.get_format_string(),
2873
mode=new_branch.bzrdir._get_file_mode())
2875
# Clean up old files
2876
new_branch._transport.delete('revision-history')
2878
branch.set_parent(None)
2879
except errors.NoSuchFile:
2881
branch.set_bound_location(None)
2884
class Converter6to7(object):
2885
"""Perform an in-place upgrade of format 6 to format 7"""
2887
def convert(self, branch):
2888
format = BzrBranchFormat7()
2889
branch._set_config_location('stacked_on_location', '')
2890
# update target format
2891
branch._transport.put_bytes('format', format.get_format_string())
2894
class Converter7to8(object):
2895
"""Perform an in-place upgrade of format 6 to format 7"""
2897
def convert(self, branch):
2898
format = BzrBranchFormat8()
2899
branch._transport.put_bytes('references', '')
2900
# update target format
2901
branch._transport.put_bytes('format', format.get_format_string())
2904
def _run_with_write_locked_target(target, callable, *args, **kwargs):
2905
"""Run ``callable(*args, **kwargs)``, write-locking target for the
2908
_run_with_write_locked_target will attempt to release the lock it acquires.
2910
If an exception is raised by callable, then that exception *will* be
2911
propagated, even if the unlock attempt raises its own error. Thus
2912
_run_with_write_locked_target should be preferred to simply doing::
2916
return callable(*args, **kwargs)
2921
# This is very similar to bzrlib.decorators.needs_write_lock. Perhaps they
2922
# should share code?
2925
result = callable(*args, **kwargs)
2927
exc_info = sys.exc_info()
2931
raise exc_info[0], exc_info[1], exc_info[2]
2937
class InterBranch(InterObject):
2938
"""This class represents operations taking place between two branches.
2940
Its instances have methods like pull() and push() and contain
2941
references to the source and target repositories these operations
2942
can be carried out on.
2946
"""The available optimised InterBranch types."""
2949
def _get_branch_formats_to_test():
2950
"""Return a tuple with the Branch formats to use when testing."""
2951
raise NotImplementedError(InterBranch._get_branch_formats_to_test)
2953
def pull(self, overwrite=False, stop_revision=None,
2954
possible_transports=None, local=False):
2955
"""Mirror source into target branch.
2957
The target branch is considered to be 'local', having low latency.
2959
:returns: PullResult instance
2961
raise NotImplementedError(self.pull)
2963
def update_revisions(self, stop_revision=None, overwrite=False,
2965
"""Pull in new perfect-fit revisions.
2967
:param stop_revision: Updated until the given revision
2968
:param overwrite: Always set the branch pointer, rather than checking
2969
to see if it is a proper descendant.
2970
:param graph: A Graph object that can be used to query history
2971
information. This can be None.
2974
raise NotImplementedError(self.update_revisions)
2976
def push(self, overwrite=False, stop_revision=None,
2977
_override_hook_source_branch=None):
2978
"""Mirror the source branch into the target branch.
2980
The source branch is considered to be 'local', having low latency.
2982
raise NotImplementedError(self.push)
2985
class GenericInterBranch(InterBranch):
2986
"""InterBranch implementation that uses public Branch functions.
2990
def _get_branch_formats_to_test():
2991
return BranchFormat._default_format, BranchFormat._default_format
2993
def update_revisions(self, stop_revision=None, overwrite=False,
2995
"""See InterBranch.update_revisions()."""
2996
self.source.lock_read()
2998
other_revno, other_last_revision = self.source.last_revision_info()
2999
stop_revno = None # unknown
3000
if stop_revision is None:
3001
stop_revision = other_last_revision
3002
if _mod_revision.is_null(stop_revision):
3003
# if there are no commits, we're done.
3005
stop_revno = other_revno
3007
# what's the current last revision, before we fetch [and change it
3009
last_rev = _mod_revision.ensure_null(self.target.last_revision())
3010
# we fetch here so that we don't process data twice in the common
3011
# case of having something to pull, and so that the check for
3012
# already merged can operate on the just fetched graph, which will
3013
# be cached in memory.
3014
self.target.fetch(self.source, stop_revision)
3015
# Check to see if one is an ancestor of the other
3018
graph = self.target.repository.get_graph()
3019
if self.target._check_if_descendant_or_diverged(
3020
stop_revision, last_rev, graph, self.source):
3021
# stop_revision is a descendant of last_rev, but we aren't
3022
# overwriting, so we're done.
3024
if stop_revno is None:
3026
graph = self.target.repository.get_graph()
3027
this_revno, this_last_revision = \
3028
self.target.last_revision_info()
3029
stop_revno = graph.find_distance_to_null(stop_revision,
3030
[(other_last_revision, other_revno),
3031
(this_last_revision, this_revno)])
3032
self.target.set_last_revision_info(stop_revno, stop_revision)
3034
self.source.unlock()
3036
def pull(self, overwrite=False, stop_revision=None,
3037
possible_transports=None, _hook_master=None, run_hooks=True,
3038
_override_hook_target=None, local=False):
3041
:param _hook_master: Private parameter - set the branch to
3042
be supplied as the master to pull hooks.
3043
:param run_hooks: Private parameter - if false, this branch
3044
is being called because it's the master of the primary branch,
3045
so it should not run its hooks.
3046
:param _override_hook_target: Private parameter - set the branch to be
3047
supplied as the target_branch to pull hooks.
3048
:param local: Only update the local branch, and not the bound branch.
3050
# This type of branch can't be bound.
3052
raise errors.LocalRequiresBoundBranch()
3053
result = PullResult()
3054
result.source_branch = self.source
3055
if _override_hook_target is None:
3056
result.target_branch = self.target
3058
result.target_branch = _override_hook_target
3059
self.source.lock_read()
3061
# We assume that during 'pull' the target repository is closer than
3063
self.source.update_references(self.target)
3064
graph = self.target.repository.get_graph(self.source.repository)
3065
# TODO: Branch formats should have a flag that indicates
3066
# that revno's are expensive, and pull() should honor that flag.
3068
result.old_revno, result.old_revid = \
3069
self.target.last_revision_info()
3070
self.target.update_revisions(self.source, stop_revision,
3071
overwrite=overwrite, graph=graph)
3072
# TODO: The old revid should be specified when merging tags,
3073
# so a tags implementation that versions tags can only
3074
# pull in the most recent changes. -- JRV20090506
3075
result.tag_conflicts = self.source.tags.merge_to(self.target.tags,
3077
result.new_revno, result.new_revid = self.target.last_revision_info()
3079
result.master_branch = _hook_master
3080
result.local_branch = result.target_branch
3082
result.master_branch = result.target_branch
3083
result.local_branch = None
3085
for hook in Branch.hooks['post_pull']:
3088
self.source.unlock()
3091
def push(self, overwrite=False, stop_revision=None,
3092
_override_hook_source_branch=None):
3093
"""See InterBranch.push.
3095
This is the basic concrete implementation of push()
3097
:param _override_hook_source_branch: If specified, run
3098
the hooks passing this Branch as the source, rather than self.
3099
This is for use of RemoteBranch, where push is delegated to the
3100
underlying vfs-based Branch.
3102
# TODO: Public option to disable running hooks - should be trivial but
3104
self.source.lock_read()
3106
return _run_with_write_locked_target(
3107
self.target, self._push_with_bound_branches, overwrite,
3109
_override_hook_source_branch=_override_hook_source_branch)
3111
self.source.unlock()
3113
def _push_with_bound_branches(self, overwrite, stop_revision,
3114
_override_hook_source_branch=None):
3115
"""Push from source into target, and into target's master if any.
3118
if _override_hook_source_branch:
3119
result.source_branch = _override_hook_source_branch
3120
for hook in Branch.hooks['post_push']:
3123
bound_location = self.target.get_bound_location()
3124
if bound_location and self.target.base != bound_location:
3125
# there is a master branch.
3127
# XXX: Why the second check? Is it even supported for a branch to
3128
# be bound to itself? -- mbp 20070507
3129
master_branch = self.target.get_master_branch()
3130
master_branch.lock_write()
3132
# push into the master from the source branch.
3133
self.source._basic_push(master_branch, overwrite, stop_revision)
3134
# and push into the target branch from the source. Note that we
3135
# push from the source branch again, because its considered the
3136
# highest bandwidth repository.
3137
result = self.source._basic_push(self.target, overwrite,
3139
result.master_branch = master_branch
3140
result.local_branch = self.target
3144
master_branch.unlock()
3147
result = self.source._basic_push(self.target, overwrite,
3149
# TODO: Why set master_branch and local_branch if there's no
3150
# binding? Maybe cleaner to just leave them unset? -- mbp
3152
result.master_branch = self.target
3153
result.local_branch = None
3158
def is_compatible(self, source, target):
3159
# GenericBranch uses the public API, so always compatible
3163
class InterToBranch5(GenericInterBranch):
3166
def _get_branch_formats_to_test():
3167
return BranchFormat._default_format, BzrBranchFormat5()
3169
def pull(self, overwrite=False, stop_revision=None,
3170
possible_transports=None, run_hooks=True,
3171
_override_hook_target=None, local=False):
3172
"""Pull from source into self, updating my master if any.
3174
:param run_hooks: Private parameter - if false, this branch
3175
is being called because it's the master of the primary branch,
3176
so it should not run its hooks.
3178
bound_location = self.target.get_bound_location()
3179
if local and not bound_location:
3180
raise errors.LocalRequiresBoundBranch()
3181
master_branch = None
3182
if not local and bound_location and self.source.base != bound_location:
3183
# not pulling from master, so we need to update master.
3184
master_branch = self.target.get_master_branch(possible_transports)
3185
master_branch.lock_write()
3188
# pull from source into master.
3189
master_branch.pull(self.source, overwrite, stop_revision,
3191
return super(InterToBranch5, self).pull(overwrite,
3192
stop_revision, _hook_master=master_branch,
3193
run_hooks=run_hooks,
3194
_override_hook_target=_override_hook_target)
3197
master_branch.unlock()
3200
InterBranch.register_optimiser(GenericInterBranch)
3201
InterBranch.register_optimiser(InterToBranch5)
added
removed
bzrlib/branch.py
