1
# Copyright (C) 2005, 2006, 2007 Canonical Ltd
3
# This program is free software; you can redistribute it and/or modify
4
# it under the terms of the GNU General Public License as published by
5
# the Free Software Foundation; either version 2 of the License, or
6
# (at your option) any later version.
8
# This program is distributed in the hope that it will be useful,
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11
# GNU General Public License for more details.
13
# You should have received a copy of the GNU General Public License
14
# along with this program; if not, write to the Free Software
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18
from cStringIO import StringIO
20
from bzrlib.lazy_import import lazy_import
21
lazy_import(globals(), """
22
from warnings import warn
28
config as _mod_config,
33
revision as _mod_revision,
40
from bzrlib.config import BranchConfig, TreeConfig
41
from bzrlib.lockable_files import LockableFiles, TransportLock
42
from bzrlib.tag import (
48
from bzrlib.decorators import needs_read_lock, needs_write_lock
49
from bzrlib.errors import (BzrError, BzrCheckError, DivergedBranches,
50
HistoryMissing, InvalidRevisionId,
51
InvalidRevisionNumber, LockError, NoSuchFile,
52
NoSuchRevision, NoWorkingTree, NotVersionedError,
53
NotBranchError, UninitializableFormat,
54
UnlistableStore, UnlistableBranch,
56
from bzrlib.hooks import Hooks
57
from bzrlib.symbol_versioning import (deprecated_function,
61
zero_eight, zero_nine, zero_sixteen,
63
from bzrlib.trace import mutter, note
66
BZR_BRANCH_FORMAT_4 = "Bazaar-NG branch, format 0.0.4\n"
67
BZR_BRANCH_FORMAT_5 = "Bazaar-NG branch, format 5\n"
68
BZR_BRANCH_FORMAT_6 = "Bazaar Branch Format 6 (bzr 0.15)\n"
71
# TODO: Maybe include checks for common corruption of newlines, etc?
73
# TODO: Some operations like log might retrieve the same revisions
74
# repeatedly to calculate deltas. We could perhaps have a weakref
75
# cache in memory to make this faster. In general anything can be
76
# cached in memory between lock and unlock operations. .. nb thats
77
# what the transaction identity map provides
80
######################################################################
84
"""Branch holding a history of revisions.
87
Base directory/url of the branch.
89
hooks: An instance of BranchHooks.
91
# this is really an instance variable - FIXME move it there
95
# override this to set the strategy for storing tags
97
return DisabledTags(self)
99
def __init__(self, *ignored, **ignored_too):
100
self.tags = self._make_tags()
101
self._revision_history_cache = None
102
self._revision_id_to_revno_cache = None
104
def break_lock(self):
105
"""Break a lock if one is present from another instance.
107
Uses the ui factory to ask for confirmation if the lock may be from
110
This will probe the repository for its lock as well.
112
self.control_files.break_lock()
113
self.repository.break_lock()
114
master = self.get_master_branch()
115
if master is not None:
119
@deprecated_method(zero_eight)
120
def open_downlevel(base):
121
"""Open a branch which may be of an old format."""
122
return Branch.open(base, _unsupported=True)
125
def open(base, _unsupported=False):
126
"""Open the branch rooted at base.
128
For instance, if the branch is at URL/.bzr/branch,
129
Branch.open(URL) -> a Branch instance.
131
control = bzrdir.BzrDir.open(base, _unsupported)
132
return control.open_branch(_unsupported)
135
def open_from_transport(transport, _unsupported=False):
136
"""Open the branch rooted at transport"""
137
control = bzrdir.BzrDir.open_from_transport(transport, _unsupported)
138
return control.open_branch(_unsupported)
141
def open_containing(url, possible_transports=None):
142
"""Open an existing branch which contains url.
144
This probes for a branch at url, and searches upwards from there.
146
Basically we keep looking up until we find the control directory or
147
run into the root. If there isn't one, raises NotBranchError.
148
If there is one and it is either an unrecognised format or an unsupported
149
format, UnknownFormatError or UnsupportedFormatError are raised.
150
If there is one, it is returned, along with the unused portion of url.
152
control, relpath = bzrdir.BzrDir.open_containing(url,
154
return control.open_branch(), relpath
157
@deprecated_function(zero_eight)
158
def initialize(base):
159
"""Create a new working tree and branch, rooted at 'base' (url)
161
NOTE: This will soon be deprecated in favour of creation
164
return bzrdir.BzrDir.create_standalone_workingtree(base).branch
166
@deprecated_function(zero_eight)
167
def setup_caching(self, cache_root):
168
"""Subclasses that care about caching should override this, and set
169
up cached stores located under cache_root.
171
NOTE: This is unused.
175
def get_config(self):
176
return BranchConfig(self)
179
return self.get_config().get_nickname()
181
def _set_nick(self, nick):
182
self.get_config().set_user_option('nickname', nick, warn_masked=True)
184
nick = property(_get_nick, _set_nick)
187
raise NotImplementedError(self.is_locked)
189
def lock_write(self):
190
raise NotImplementedError(self.lock_write)
193
raise NotImplementedError(self.lock_read)
196
raise NotImplementedError(self.unlock)
198
def peek_lock_mode(self):
199
"""Return lock mode for the Branch: 'r', 'w' or None"""
200
raise NotImplementedError(self.peek_lock_mode)
202
def get_physical_lock_status(self):
203
raise NotImplementedError(self.get_physical_lock_status)
206
def get_revision_id_to_revno_map(self):
207
"""Return the revision_id => dotted revno map.
209
This will be regenerated on demand, but will be cached.
211
:return: A dictionary mapping revision_id => dotted revno.
212
This dictionary should not be modified by the caller.
214
if self._revision_id_to_revno_cache is not None:
215
mapping = self._revision_id_to_revno_cache
217
mapping = self._gen_revno_map()
218
self._cache_revision_id_to_revno(mapping)
219
# TODO: jam 20070417 Since this is being cached, should we be returning
221
# I would rather not, and instead just declare that users should not
222
# modify the return value.
225
def _gen_revno_map(self):
226
"""Create a new mapping from revision ids to dotted revnos.
228
Dotted revnos are generated based on the current tip in the revision
230
This is the worker function for get_revision_id_to_revno_map, which
231
just caches the return value.
233
:return: A dictionary mapping revision_id => dotted revno.
235
last_revision = self.last_revision()
236
revision_graph = self.repository.get_revision_graph(last_revision)
237
merge_sorted_revisions = tsort.merge_sort(
242
revision_id_to_revno = dict((rev_id, revno)
243
for seq_num, rev_id, depth, revno, end_of_merge
244
in merge_sorted_revisions)
245
return revision_id_to_revno
247
def leave_lock_in_place(self):
248
"""Tell this branch object not to release the physical lock when this
251
If lock_write doesn't return a token, then this method is not supported.
253
self.control_files.leave_in_place()
255
def dont_leave_lock_in_place(self):
256
"""Tell this branch object to release the physical lock when this
257
object is unlocked, even if it didn't originally acquire it.
259
If lock_write doesn't return a token, then this method is not supported.
261
self.control_files.dont_leave_in_place()
263
def abspath(self, name):
264
"""Return absolute filename for something in the branch
266
XXX: Robert Collins 20051017 what is this used for? why is it a branch
267
method and not a tree method.
269
raise NotImplementedError(self.abspath)
271
def bind(self, other):
272
"""Bind the local branch the other branch.
274
:param other: The branch to bind to
277
raise errors.UpgradeRequired(self.base)
280
def fetch(self, from_branch, last_revision=None, pb=None):
281
"""Copy revisions from from_branch into this branch.
283
:param from_branch: Where to copy from.
284
:param last_revision: What revision to stop at (None for at the end
286
:param pb: An optional progress bar to use.
288
Returns the copied revision count and the failed revisions in a tuple:
291
if self.base == from_branch.base:
294
nested_pb = ui.ui_factory.nested_progress_bar()
299
from_branch.lock_read()
301
if last_revision is None:
302
pb.update('get source history')
303
last_revision = from_branch.last_revision()
304
if last_revision is None:
305
last_revision = _mod_revision.NULL_REVISION
306
return self.repository.fetch(from_branch.repository,
307
revision_id=last_revision,
310
if nested_pb is not None:
314
def get_bound_location(self):
315
"""Return the URL of the branch we are bound to.
317
Older format branches cannot bind, please be sure to use a metadir
322
def get_old_bound_location(self):
323
"""Return the URL of the branch we used to be bound to
325
raise errors.UpgradeRequired(self.base)
327
def get_commit_builder(self, parents, config=None, timestamp=None,
328
timezone=None, committer=None, revprops=None,
330
"""Obtain a CommitBuilder for this branch.
332
:param parents: Revision ids of the parents of the new revision.
333
:param config: Optional configuration to use.
334
:param timestamp: Optional timestamp recorded for commit.
335
:param timezone: Optional timezone for timestamp.
336
:param committer: Optional committer to set for commit.
337
:param revprops: Optional dictionary of revision properties.
338
:param revision_id: Optional revision id.
342
config = self.get_config()
344
return self.repository.get_commit_builder(self, parents, config,
345
timestamp, timezone, committer, revprops, revision_id)
347
def get_master_branch(self):
348
"""Return the branch we are bound to.
350
:return: Either a Branch, or None
354
def get_revision_delta(self, revno):
355
"""Return the delta for one revision.
357
The delta is relative to its mainline predecessor, or the
358
empty tree for revision 1.
360
assert isinstance(revno, int)
361
rh = self.revision_history()
362
if not (1 <= revno <= len(rh)):
363
raise InvalidRevisionNumber(revno)
364
return self.repository.get_revision_delta(rh[revno-1])
366
@deprecated_method(zero_sixteen)
367
def get_root_id(self):
368
"""Return the id of this branches root
370
Deprecated: branches don't have root ids-- trees do.
371
Use basis_tree().get_root_id() instead.
373
raise NotImplementedError(self.get_root_id)
375
def print_file(self, file, revision_id):
376
"""Print `file` to stdout."""
377
raise NotImplementedError(self.print_file)
379
def append_revision(self, *revision_ids):
380
raise NotImplementedError(self.append_revision)
382
def set_revision_history(self, rev_history):
383
raise NotImplementedError(self.set_revision_history)
385
def _cache_revision_history(self, rev_history):
386
"""Set the cached revision history to rev_history.
388
The revision_history method will use this cache to avoid regenerating
389
the revision history.
391
This API is semi-public; it only for use by subclasses, all other code
392
should consider it to be private.
394
self._revision_history_cache = rev_history
396
def _cache_revision_id_to_revno(self, revision_id_to_revno):
397
"""Set the cached revision_id => revno map to revision_id_to_revno.
399
This API is semi-public; it only for use by subclasses, all other code
400
should consider it to be private.
402
self._revision_id_to_revno_cache = revision_id_to_revno
404
def _clear_cached_state(self):
405
"""Clear any cached data on this branch, e.g. cached revision history.
407
This means the next call to revision_history will need to call
408
_gen_revision_history.
410
This API is semi-public; it only for use by subclasses, all other code
411
should consider it to be private.
413
self._revision_history_cache = None
414
self._revision_id_to_revno_cache = None
416
def _gen_revision_history(self):
417
"""Return sequence of revision hashes on to this branch.
419
Unlike revision_history, this method always regenerates or rereads the
420
revision history, i.e. it does not cache the result, so repeated calls
423
Concrete subclasses should override this instead of revision_history so
424
that subclasses do not need to deal with caching logic.
426
This API is semi-public; it only for use by subclasses, all other code
427
should consider it to be private.
429
raise NotImplementedError(self._gen_revision_history)
432
def revision_history(self):
433
"""Return sequence of revision hashes on to this branch.
435
This method will cache the revision history for as long as it is safe to
438
if self._revision_history_cache is not None:
439
history = self._revision_history_cache
441
history = self._gen_revision_history()
442
self._cache_revision_history(history)
446
"""Return current revision number for this branch.
448
That is equivalent to the number of revisions committed to
451
return len(self.revision_history())
454
"""Older format branches cannot bind or unbind."""
455
raise errors.UpgradeRequired(self.base)
457
def set_append_revisions_only(self, enabled):
458
"""Older format branches are never restricted to append-only"""
459
raise errors.UpgradeRequired(self.base)
461
def last_revision(self):
462
"""Return last revision id, or None"""
463
ph = self.revision_history()
469
def last_revision_info(self):
470
"""Return information about the last revision.
472
:return: A tuple (revno, last_revision_id).
474
rh = self.revision_history()
477
return (revno, rh[-1])
479
return (0, _mod_revision.NULL_REVISION)
481
def missing_revisions(self, other, stop_revision=None):
482
"""Return a list of new revisions that would perfectly fit.
484
If self and other have not diverged, return a list of the revisions
485
present in other, but missing from self.
487
self_history = self.revision_history()
488
self_len = len(self_history)
489
other_history = other.revision_history()
490
other_len = len(other_history)
491
common_index = min(self_len, other_len) -1
492
if common_index >= 0 and \
493
self_history[common_index] != other_history[common_index]:
494
raise DivergedBranches(self, other)
496
if stop_revision is None:
497
stop_revision = other_len
499
assert isinstance(stop_revision, int)
500
if stop_revision > other_len:
501
raise errors.NoSuchRevision(self, stop_revision)
502
return other_history[self_len:stop_revision]
504
def update_revisions(self, other, stop_revision=None):
505
"""Pull in new perfect-fit revisions.
507
:param other: Another Branch to pull from
508
:param stop_revision: Updated until the given revision
511
raise NotImplementedError(self.update_revisions)
513
def revision_id_to_revno(self, revision_id):
514
"""Given a revision id, return its revno"""
515
if _mod_revision.is_null(revision_id):
517
revision_id = osutils.safe_revision_id(revision_id)
518
history = self.revision_history()
520
return history.index(revision_id) + 1
522
raise errors.NoSuchRevision(self, revision_id)
524
def get_rev_id(self, revno, history=None):
525
"""Find the revision id of the specified revno."""
529
history = self.revision_history()
530
if revno <= 0 or revno > len(history):
531
raise errors.NoSuchRevision(self, revno)
532
return history[revno - 1]
534
def pull(self, source, overwrite=False, stop_revision=None):
535
"""Mirror source into this branch.
537
This branch is considered to be 'local', having low latency.
539
:returns: PullResult instance
541
raise NotImplementedError(self.pull)
543
def push(self, target, overwrite=False, stop_revision=None):
544
"""Mirror this branch into target.
546
This branch is considered to be 'local', having low latency.
548
raise NotImplementedError(self.push)
550
def basis_tree(self):
551
"""Return `Tree` object for last revision."""
552
return self.repository.revision_tree(self.last_revision())
554
def rename_one(self, from_rel, to_rel):
557
This can change the directory or the filename or both.
559
raise NotImplementedError(self.rename_one)
561
def move(self, from_paths, to_name):
564
to_name must exist as a versioned directory.
566
If to_name exists and is a directory, the files are moved into
567
it, keeping their old names. If it is a directory,
569
Note that to_name is only the last component of the new name;
570
this doesn't change the directory.
572
This returns a list of (from_path, to_path) pairs for each
575
raise NotImplementedError(self.move)
577
def get_parent(self):
578
"""Return the parent location of the branch.
580
This is the default location for push/pull/missing. The usual
581
pattern is that the user can override it by specifying a
584
raise NotImplementedError(self.get_parent)
586
def _set_config_location(self, name, url, config=None,
587
make_relative=False):
589
config = self.get_config()
593
url = urlutils.relative_url(self.base, url)
594
config.set_user_option(name, url, warn_masked=True)
596
def _get_config_location(self, name, config=None):
598
config = self.get_config()
599
location = config.get_user_option(name)
604
def get_submit_branch(self):
605
"""Return the submit location of the branch.
607
This is the default location for bundle. The usual
608
pattern is that the user can override it by specifying a
611
return self.get_config().get_user_option('submit_branch')
613
def set_submit_branch(self, location):
614
"""Return the submit location of the branch.
616
This is the default location for bundle. The usual
617
pattern is that the user can override it by specifying a
620
self.get_config().set_user_option('submit_branch', location,
623
def get_public_branch(self):
624
"""Return the public location of the branch.
626
This is is used by merge directives.
628
return self._get_config_location('public_branch')
630
def set_public_branch(self, location):
631
"""Return the submit location of the branch.
633
This is the default location for bundle. The usual
634
pattern is that the user can override it by specifying a
637
self._set_config_location('public_branch', location)
639
def get_push_location(self):
640
"""Return the None or the location to push this branch to."""
641
push_loc = self.get_config().get_user_option('push_location')
644
def set_push_location(self, location):
645
"""Set a new push location for this branch."""
646
raise NotImplementedError(self.set_push_location)
648
def set_parent(self, url):
649
raise NotImplementedError(self.set_parent)
653
"""Synchronise this branch with the master branch if any.
655
:return: None or the last_revision pivoted out during the update.
659
def check_revno(self, revno):
661
Check whether a revno corresponds to any revision.
662
Zero (the NULL revision) is considered valid.
665
self.check_real_revno(revno)
667
def check_real_revno(self, revno):
669
Check whether a revno corresponds to a real revision.
670
Zero (the NULL revision) is considered invalid
672
if revno < 1 or revno > self.revno():
673
raise InvalidRevisionNumber(revno)
676
def clone(self, to_bzrdir, revision_id=None):
677
"""Clone this branch into to_bzrdir preserving all semantic values.
679
revision_id: if not None, the revision history in the new branch will
680
be truncated to end with revision_id.
682
result = self._format.initialize(to_bzrdir)
683
self.copy_content_into(result, revision_id=revision_id)
687
def sprout(self, to_bzrdir, revision_id=None):
688
"""Create a new line of development from the branch, into to_bzrdir.
690
revision_id: if not None, the revision history in the new branch will
691
be truncated to end with revision_id.
693
result = self._format.initialize(to_bzrdir)
694
self.copy_content_into(result, revision_id=revision_id)
695
result.set_parent(self.bzrdir.root_transport.base)
698
def _synchronize_history(self, destination, revision_id):
699
"""Synchronize last revision and revision history between branches.
701
This version is most efficient when the destination is also a
702
BzrBranch5, but works for BzrBranch6 as long as the revision
703
history is the true lefthand parent history, and all of the revisions
704
are in the destination's repository. If not, set_revision_history
707
:param destination: The branch to copy the history into
708
:param revision_id: The revision-id to truncate history at. May
709
be None to copy complete history.
711
if revision_id == _mod_revision.NULL_REVISION:
713
new_history = self.revision_history()
714
if revision_id is not None and new_history != []:
715
revision_id = osutils.safe_revision_id(revision_id)
717
new_history = new_history[:new_history.index(revision_id) + 1]
719
rev = self.repository.get_revision(revision_id)
720
new_history = rev.get_history(self.repository)[1:]
721
destination.set_revision_history(new_history)
724
def copy_content_into(self, destination, revision_id=None):
725
"""Copy the content of self into destination.
727
revision_id: if not None, the revision history in the new branch will
728
be truncated to end with revision_id.
730
self._synchronize_history(destination, revision_id)
732
parent = self.get_parent()
733
except errors.InaccessibleParent, e:
734
mutter('parent was not accessible to copy: %s', e)
737
destination.set_parent(parent)
738
self.tags.merge_to(destination.tags)
742
"""Check consistency of the branch.
744
In particular this checks that revisions given in the revision-history
745
do actually match up in the revision graph, and that they're all
746
present in the repository.
748
Callers will typically also want to check the repository.
750
:return: A BranchCheckResult.
752
mainline_parent_id = None
753
for revision_id in self.revision_history():
755
revision = self.repository.get_revision(revision_id)
756
except errors.NoSuchRevision, e:
757
raise errors.BzrCheckError("mainline revision {%s} not in repository"
759
# In general the first entry on the revision history has no parents.
760
# But it's not illegal for it to have parents listed; this can happen
761
# in imports from Arch when the parents weren't reachable.
762
if mainline_parent_id is not None:
763
if mainline_parent_id not in revision.parent_ids:
764
raise errors.BzrCheckError("previous revision {%s} not listed among "
766
% (mainline_parent_id, revision_id))
767
mainline_parent_id = revision_id
768
return BranchCheckResult(self)
770
def _get_checkout_format(self):
771
"""Return the most suitable metadir for a checkout of this branch.
772
Weaves are used if this branch's repository uses weaves.
774
if isinstance(self.bzrdir, bzrdir.BzrDirPreSplitOut):
775
from bzrlib.repofmt import weaverepo
776
format = bzrdir.BzrDirMetaFormat1()
777
format.repository_format = weaverepo.RepositoryFormat7()
779
format = self.repository.bzrdir.checkout_metadir()
780
format.set_branch_format(self._format)
783
def create_checkout(self, to_location, revision_id=None,
785
"""Create a checkout of a branch.
787
:param to_location: The url to produce the checkout at
788
:param revision_id: The revision to check out
789
:param lightweight: If True, produce a lightweight checkout, otherwise,
790
produce a bound branch (heavyweight checkout)
791
:return: The tree of the created checkout
793
t = transport.get_transport(to_location)
796
format = self._get_checkout_format()
797
checkout = format.initialize_on_transport(t)
798
BranchReferenceFormat().initialize(checkout, self)
800
format = self._get_checkout_format()
801
checkout_branch = bzrdir.BzrDir.create_branch_convenience(
802
to_location, force_new_tree=False, format=format)
803
checkout = checkout_branch.bzrdir
804
checkout_branch.bind(self)
805
# pull up to the specified revision_id to set the initial
806
# branch tip correctly, and seed it with history.
807
checkout_branch.pull(self, stop_revision=revision_id)
808
tree = checkout.create_workingtree(revision_id)
809
basis_tree = tree.basis_tree()
810
basis_tree.lock_read()
812
for path, file_id in basis_tree.iter_references():
813
reference_parent = self.reference_parent(file_id, path)
814
reference_parent.create_checkout(tree.abspath(path),
815
basis_tree.get_reference_revision(file_id, path),
821
def reference_parent(self, file_id, path):
822
"""Return the parent branch for a tree-reference file_id
823
:param file_id: The file_id of the tree reference
824
:param path: The path of the file_id in the tree
825
:return: A branch associated with the file_id
827
# FIXME should provide multiple branches, based on config
828
return Branch.open(self.bzrdir.root_transport.clone(path).base)
830
def supports_tags(self):
831
return self._format.supports_tags()
834
class BranchFormat(object):
835
"""An encapsulation of the initialization and open routines for a format.
837
Formats provide three things:
838
* An initialization routine,
842
Formats are placed in an dict by their format string for reference
843
during branch opening. Its not required that these be instances, they
844
can be classes themselves with class methods - it simply depends on
845
whether state is needed for a given format or not.
847
Once a format is deprecated, just deprecate the initialize and open
848
methods on the format class. Do not deprecate the object, as the
849
object will be created every time regardless.
852
_default_format = None
853
"""The default format used for new branches."""
856
"""The known formats."""
858
def __eq__(self, other):
859
return self.__class__ is other.__class__
861
def __ne__(self, other):
862
return not (self == other)
865
def find_format(klass, a_bzrdir):
866
"""Return the format for the branch object in a_bzrdir."""
868
transport = a_bzrdir.get_branch_transport(None)
869
format_string = transport.get("format").read()
870
return klass._formats[format_string]
872
raise NotBranchError(path=transport.base)
874
raise errors.UnknownFormatError(format=format_string)
877
def get_default_format(klass):
878
"""Return the current default format."""
879
return klass._default_format
881
def get_reference(self, a_bzrdir):
882
"""Get the target reference of the branch in a_bzrdir.
884
format probing must have been completed before calling
885
this method - it is assumed that the format of the branch
886
in a_bzrdir is correct.
888
:param a_bzrdir: The bzrdir to get the branch data from.
889
:return: None if the branch is not a reference branch.
893
def get_format_string(self):
894
"""Return the ASCII format string that identifies this format."""
895
raise NotImplementedError(self.get_format_string)
897
def get_format_description(self):
898
"""Return the short format description for this format."""
899
raise NotImplementedError(self.get_format_description)
901
def _initialize_helper(self, a_bzrdir, utf8_files, lock_type='metadir',
903
"""Initialize a branch in a bzrdir, with specified files
905
:param a_bzrdir: The bzrdir to initialize the branch in
906
:param utf8_files: The files to create as a list of
907
(filename, content) tuples
908
:param set_format: If True, set the format with
909
self.get_format_string. (BzrBranch4 has its format set
911
:return: a branch in this format
913
mutter('creating branch %r in %s', self, a_bzrdir.transport.base)
914
branch_transport = a_bzrdir.get_branch_transport(self)
916
'metadir': ('lock', lockdir.LockDir),
917
'branch4': ('branch-lock', lockable_files.TransportLock),
919
lock_name, lock_class = lock_map[lock_type]
920
control_files = lockable_files.LockableFiles(branch_transport,
921
lock_name, lock_class)
922
control_files.create_lock()
923
control_files.lock_write()
925
control_files.put_utf8('format', self.get_format_string())
927
for file, content in utf8_files:
928
control_files.put_utf8(file, content)
930
control_files.unlock()
931
return self.open(a_bzrdir, _found=True)
933
def initialize(self, a_bzrdir):
934
"""Create a branch of this format in a_bzrdir."""
935
raise NotImplementedError(self.initialize)
937
def is_supported(self):
938
"""Is this format supported?
940
Supported formats can be initialized and opened.
941
Unsupported formats may not support initialization or committing or
942
some other features depending on the reason for not being supported.
946
def open(self, a_bzrdir, _found=False):
947
"""Return the branch object for a_bzrdir
949
_found is a private parameter, do not use it. It is used to indicate
950
if format probing has already be done.
952
raise NotImplementedError(self.open)
955
def register_format(klass, format):
956
klass._formats[format.get_format_string()] = format
959
def set_default_format(klass, format):
960
klass._default_format = format
963
def unregister_format(klass, format):
964
assert klass._formats[format.get_format_string()] is format
965
del klass._formats[format.get_format_string()]
968
return self.get_format_string().rstrip()
970
def supports_tags(self):
971
"""True if this format supports tags stored in the branch"""
972
return False # by default
974
# XXX: Probably doesn't really belong here -- mbp 20070212
975
def _initialize_control_files(self, a_bzrdir, utf8_files, lock_filename,
977
branch_transport = a_bzrdir.get_branch_transport(self)
978
control_files = lockable_files.LockableFiles(branch_transport,
979
lock_filename, lock_class)
980
control_files.create_lock()
981
control_files.lock_write()
983
for filename, content in utf8_files:
984
control_files.put_utf8(filename, content)
986
control_files.unlock()
989
class BranchHooks(Hooks):
990
"""A dictionary mapping hook name to a list of callables for branch hooks.
992
e.g. ['set_rh'] Is the list of items to be called when the
993
set_revision_history function is invoked.
997
"""Create the default hooks.
999
These are all empty initially, because by default nothing should get
1002
Hooks.__init__(self)
1003
# Introduced in 0.15:
1004
# invoked whenever the revision history has been set
1005
# with set_revision_history. The api signature is
1006
# (branch, revision_history), and the branch will
1009
# invoked after a push operation completes.
1010
# the api signature is
1012
# containing the members
1013
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
1014
# where local is the local target branch or None, master is the target
1015
# master branch, and the rest should be self explanatory. The source
1016
# is read locked and the target branches write locked. Source will
1017
# be the local low-latency branch.
1018
self['post_push'] = []
1019
# invoked after a pull operation completes.
1020
# the api signature is
1022
# containing the members
1023
# (source, local, master, old_revno, old_revid, new_revno, new_revid)
1024
# where local is the local branch or None, master is the target
1025
# master branch, and the rest should be self explanatory. The source
1026
# is read locked and the target branches write locked. The local
1027
# branch is the low-latency branch.
1028
self['post_pull'] = []
1029
# invoked after a commit operation completes.
1030
# the api signature is
1031
# (local, master, old_revno, old_revid, new_revno, new_revid)
1032
# old_revid is NULL_REVISION for the first commit to a branch.
1033
self['post_commit'] = []
1034
# invoked after a uncommit operation completes.
1035
# the api signature is
1036
# (local, master, old_revno, old_revid, new_revno, new_revid) where
1037
# local is the local branch or None, master is the target branch,
1038
# and an empty branch recieves new_revno of 0, new_revid of None.
1039
self['post_uncommit'] = []
1042
# install the default hooks into the Branch class.
1043
Branch.hooks = BranchHooks()
1046
class BzrBranchFormat4(BranchFormat):
1047
"""Bzr branch format 4.
1050
- a revision-history file.
1051
- a branch-lock lock file [ to be shared with the bzrdir ]
1054
def get_format_description(self):
1055
"""See BranchFormat.get_format_description()."""
1056
return "Branch format 4"
1058
def initialize(self, a_bzrdir):
1059
"""Create a branch of this format in a_bzrdir."""
1060
utf8_files = [('revision-history', ''),
1061
('branch-name', ''),
1063
return self._initialize_helper(a_bzrdir, utf8_files,
1064
lock_type='branch4', set_format=False)
1067
super(BzrBranchFormat4, self).__init__()
1068
self._matchingbzrdir = bzrdir.BzrDirFormat6()
1070
def open(self, a_bzrdir, _found=False):
1071
"""Return the branch object for a_bzrdir
1073
_found is a private parameter, do not use it. It is used to indicate
1074
if format probing has already be done.
1077
# we are being called directly and must probe.
1078
raise NotImplementedError
1079
return BzrBranch(_format=self,
1080
_control_files=a_bzrdir._control_files,
1082
_repository=a_bzrdir.open_repository())
1085
return "Bazaar-NG branch format 4"
1088
class BzrBranchFormat5(BranchFormat):
1089
"""Bzr branch format 5.
1092
- a revision-history file.
1094
- a lock dir guarding the branch itself
1095
- all of this stored in a branch/ subdirectory
1096
- works with shared repositories.
1098
This format is new in bzr 0.8.
1101
def get_format_string(self):
1102
"""See BranchFormat.get_format_string()."""
1103
return "Bazaar-NG branch format 5\n"
1105
def get_format_description(self):
1106
"""See BranchFormat.get_format_description()."""
1107
return "Branch format 5"
1109
def initialize(self, a_bzrdir):
1110
"""Create a branch of this format in a_bzrdir."""
1111
utf8_files = [('revision-history', ''),
1112
('branch-name', ''),
1114
return self._initialize_helper(a_bzrdir, utf8_files)
1117
super(BzrBranchFormat5, self).__init__()
1118
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1120
def open(self, a_bzrdir, _found=False):
1121
"""Return the branch object for a_bzrdir
1123
_found is a private parameter, do not use it. It is used to indicate
1124
if format probing has already be done.
1127
format = BranchFormat.find_format(a_bzrdir)
1128
assert format.__class__ == self.__class__
1130
transport = a_bzrdir.get_branch_transport(None)
1131
control_files = lockable_files.LockableFiles(transport, 'lock',
1133
return BzrBranch5(_format=self,
1134
_control_files=control_files,
1136
_repository=a_bzrdir.find_repository())
1138
raise NotBranchError(path=transport.base)
1141
class BzrBranchFormat6(BzrBranchFormat5):
1142
"""Branch format with last-revision
1144
Unlike previous formats, this has no explicit revision history. Instead,
1145
this just stores the last-revision, and the left-hand history leading
1146
up to there is the history.
1148
This format was introduced in bzr 0.15
1151
def get_format_string(self):
1152
"""See BranchFormat.get_format_string()."""
1153
return "Bazaar Branch Format 6 (bzr 0.15)\n"
1155
def get_format_description(self):
1156
"""See BranchFormat.get_format_description()."""
1157
return "Branch format 6"
1159
def initialize(self, a_bzrdir):
1160
"""Create a branch of this format in a_bzrdir."""
1161
utf8_files = [('last-revision', '0 null:\n'),
1162
('branch-name', ''),
1163
('branch.conf', ''),
1166
return self._initialize_helper(a_bzrdir, utf8_files)
1168
def open(self, a_bzrdir, _found=False):
1169
"""Return the branch object for a_bzrdir
1171
_found is a private parameter, do not use it. It is used to indicate
1172
if format probing has already be done.
1175
format = BranchFormat.find_format(a_bzrdir)
1176
assert format.__class__ == self.__class__
1177
transport = a_bzrdir.get_branch_transport(None)
1178
control_files = lockable_files.LockableFiles(transport, 'lock',
1180
return BzrBranch6(_format=self,
1181
_control_files=control_files,
1183
_repository=a_bzrdir.find_repository())
1185
def supports_tags(self):
1189
class BranchReferenceFormat(BranchFormat):
1190
"""Bzr branch reference format.
1192
Branch references are used in implementing checkouts, they
1193
act as an alias to the real branch which is at some other url.
1200
def get_format_string(self):
1201
"""See BranchFormat.get_format_string()."""
1202
return "Bazaar-NG Branch Reference Format 1\n"
1204
def get_format_description(self):
1205
"""See BranchFormat.get_format_description()."""
1206
return "Checkout reference format 1"
1208
def get_reference(self, a_bzrdir):
1209
"""See BranchFormat.get_reference()."""
1210
transport = a_bzrdir.get_branch_transport(None)
1211
return transport.get('location').read()
1213
def initialize(self, a_bzrdir, target_branch=None):
1214
"""Create a branch of this format in a_bzrdir."""
1215
if target_branch is None:
1216
# this format does not implement branch itself, thus the implicit
1217
# creation contract must see it as uninitializable
1218
raise errors.UninitializableFormat(self)
1219
mutter('creating branch reference in %s', a_bzrdir.transport.base)
1220
branch_transport = a_bzrdir.get_branch_transport(self)
1221
branch_transport.put_bytes('location',
1222
target_branch.bzrdir.root_transport.base)
1223
branch_transport.put_bytes('format', self.get_format_string())
1224
return self.open(a_bzrdir, _found=True)
1227
super(BranchReferenceFormat, self).__init__()
1228
self._matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1230
def _make_reference_clone_function(format, a_branch):
1231
"""Create a clone() routine for a branch dynamically."""
1232
def clone(to_bzrdir, revision_id=None):
1233
"""See Branch.clone()."""
1234
return format.initialize(to_bzrdir, a_branch)
1235
# cannot obey revision_id limits when cloning a reference ...
1236
# FIXME RBC 20060210 either nuke revision_id for clone, or
1237
# emit some sort of warning/error to the caller ?!
1240
def open(self, a_bzrdir, _found=False, location=None):
1241
"""Return the branch that the branch reference in a_bzrdir points at.
1243
_found is a private parameter, do not use it. It is used to indicate
1244
if format probing has already be done.
1247
format = BranchFormat.find_format(a_bzrdir)
1248
assert format.__class__ == self.__class__
1249
if location is None:
1250
location = self.get_reference(a_bzrdir)
1251
real_bzrdir = bzrdir.BzrDir.open(location)
1252
result = real_bzrdir.open_branch()
1253
# this changes the behaviour of result.clone to create a new reference
1254
# rather than a copy of the content of the branch.
1255
# I did not use a proxy object because that needs much more extensive
1256
# testing, and we are only changing one behaviour at the moment.
1257
# If we decide to alter more behaviours - i.e. the implicit nickname
1258
# then this should be refactored to introduce a tested proxy branch
1259
# and a subclass of that for use in overriding clone() and ....
1261
result.clone = self._make_reference_clone_function(result)
1265
# formats which have no format string are not discoverable
1266
# and not independently creatable, so are not registered.
1267
__default_format = BzrBranchFormat5()
1268
BranchFormat.register_format(__default_format)
1269
BranchFormat.register_format(BranchReferenceFormat())
1270
BranchFormat.register_format(BzrBranchFormat6())
1271
BranchFormat.set_default_format(__default_format)
1272
_legacy_formats = [BzrBranchFormat4(),
1275
class BzrBranch(Branch):
1276
"""A branch stored in the actual filesystem.
1278
Note that it's "local" in the context of the filesystem; it doesn't
1279
really matter if it's on an nfs/smb/afs/coda/... share, as long as
1280
it's writable, and can be accessed via the normal filesystem API.
1283
def __init__(self, _format=None,
1284
_control_files=None, a_bzrdir=None, _repository=None):
1285
"""Create new branch object at a particular location."""
1286
Branch.__init__(self)
1287
if a_bzrdir is None:
1288
raise ValueError('a_bzrdir must be supplied')
1290
self.bzrdir = a_bzrdir
1291
# self._transport used to point to the directory containing the
1292
# control directory, but was not used - now it's just the transport
1293
# for the branch control files. mbp 20070212
1294
self._base = self.bzrdir.transport.clone('..').base
1295
self._format = _format
1296
if _control_files is None:
1297
raise ValueError('BzrBranch _control_files is None')
1298
self.control_files = _control_files
1299
self._transport = _control_files._transport
1300
self.repository = _repository
1303
return '%s(%r)' % (self.__class__.__name__, self.base)
1307
def _get_base(self):
1308
"""Returns the directory containing the control directory."""
1311
base = property(_get_base, doc="The URL for the root of this branch.")
1313
def abspath(self, name):
1314
"""See Branch.abspath."""
1315
return self.control_files._transport.abspath(name)
1318
@deprecated_method(zero_sixteen)
1320
def get_root_id(self):
1321
"""See Branch.get_root_id."""
1322
tree = self.repository.revision_tree(self.last_revision())
1323
return tree.inventory.root.file_id
1325
def is_locked(self):
1326
return self.control_files.is_locked()
1328
def lock_write(self, token=None):
1329
repo_token = self.repository.lock_write()
1331
token = self.control_files.lock_write(token=token)
1333
self.repository.unlock()
1337
def lock_read(self):
1338
self.repository.lock_read()
1340
self.control_files.lock_read()
1342
self.repository.unlock()
1346
# TODO: test for failed two phase locks. This is known broken.
1348
self.control_files.unlock()
1350
self.repository.unlock()
1351
if not self.control_files.is_locked():
1352
# we just released the lock
1353
self._clear_cached_state()
1355
def peek_lock_mode(self):
1356
if self.control_files._lock_count == 0:
1359
return self.control_files._lock_mode
1361
def get_physical_lock_status(self):
1362
return self.control_files.get_physical_lock_status()
1365
def print_file(self, file, revision_id):
1366
"""See Branch.print_file."""
1367
return self.repository.print_file(file, revision_id)
1370
def append_revision(self, *revision_ids):
1371
"""See Branch.append_revision."""
1372
revision_ids = [osutils.safe_revision_id(r) for r in revision_ids]
1373
for revision_id in revision_ids:
1374
_mod_revision.check_not_reserved_id(revision_id)
1375
mutter("add {%s} to revision-history" % revision_id)
1376
rev_history = self.revision_history()
1377
rev_history.extend(revision_ids)
1378
self.set_revision_history(rev_history)
1380
def _write_revision_history(self, history):
1381
"""Factored out of set_revision_history.
1383
This performs the actual writing to disk.
1384
It is intended to be called by BzrBranch5.set_revision_history."""
1385
self.control_files.put_bytes(
1386
'revision-history', '\n'.join(history))
1389
def set_revision_history(self, rev_history):
1390
"""See Branch.set_revision_history."""
1391
rev_history = [osutils.safe_revision_id(r) for r in rev_history]
1392
self._clear_cached_state()
1393
self._write_revision_history(rev_history)
1394
self._cache_revision_history(rev_history)
1395
for hook in Branch.hooks['set_rh']:
1396
hook(self, rev_history)
1399
def set_last_revision_info(self, revno, revision_id):
1400
revision_id = osutils.safe_revision_id(revision_id)
1401
history = self._lefthand_history(revision_id)
1402
assert len(history) == revno, '%d != %d' % (len(history), revno)
1403
self.set_revision_history(history)
1405
def _gen_revision_history(self):
1406
history = self.control_files.get('revision-history').read().split('\n')
1407
if history[-1:] == ['']:
1408
# There shouldn't be a trailing newline, but just in case.
1412
def _lefthand_history(self, revision_id, last_rev=None,
1414
# stop_revision must be a descendant of last_revision
1415
stop_graph = self.repository.get_revision_graph(revision_id)
1416
if (last_rev is not None and last_rev != _mod_revision.NULL_REVISION
1417
and last_rev not in stop_graph):
1418
# our previous tip is not merged into stop_revision
1419
raise errors.DivergedBranches(self, other_branch)
1420
# make a new revision history from the graph
1421
current_rev_id = revision_id
1423
while current_rev_id not in (None, _mod_revision.NULL_REVISION):
1424
new_history.append(current_rev_id)
1425
current_rev_id_parents = stop_graph[current_rev_id]
1427
current_rev_id = current_rev_id_parents[0]
1429
current_rev_id = None
1430
new_history.reverse()
1434
def generate_revision_history(self, revision_id, last_rev=None,
1436
"""Create a new revision history that will finish with revision_id.
1438
:param revision_id: the new tip to use.
1439
:param last_rev: The previous last_revision. If not None, then this
1440
must be a ancestory of revision_id, or DivergedBranches is raised.
1441
:param other_branch: The other branch that DivergedBranches should
1442
raise with respect to.
1444
revision_id = osutils.safe_revision_id(revision_id)
1445
self.set_revision_history(self._lefthand_history(revision_id,
1446
last_rev, other_branch))
1449
def update_revisions(self, other, stop_revision=None):
1450
"""See Branch.update_revisions."""
1453
if stop_revision is None:
1454
stop_revision = other.last_revision()
1455
if stop_revision is None:
1456
# if there are no commits, we're done.
1459
stop_revision = osutils.safe_revision_id(stop_revision)
1460
# whats the current last revision, before we fetch [and change it
1462
last_rev = _mod_revision.ensure_null(self.last_revision())
1463
# we fetch here regardless of whether we need to so that we pickup
1465
self.fetch(other, stop_revision)
1466
if self.repository.get_graph().is_ancestor(stop_revision,
1469
self.generate_revision_history(stop_revision, last_rev=last_rev,
1474
def basis_tree(self):
1475
"""See Branch.basis_tree."""
1476
return self.repository.revision_tree(self.last_revision())
1478
@deprecated_method(zero_eight)
1479
def working_tree(self):
1480
"""Create a Working tree object for this branch."""
1482
from bzrlib.transport.local import LocalTransport
1483
if (self.base.find('://') != -1 or
1484
not isinstance(self._transport, LocalTransport)):
1485
raise NoWorkingTree(self.base)
1486
return self.bzrdir.open_workingtree()
1489
def pull(self, source, overwrite=False, stop_revision=None,
1490
_hook_master=None, run_hooks=True):
1493
:param _hook_master: Private parameter - set the branch to
1494
be supplied as the master to push hooks.
1495
:param run_hooks: Private parameter - if false, this branch
1496
is being called because it's the master of the primary branch,
1497
so it should not run its hooks.
1499
result = PullResult()
1500
result.source_branch = source
1501
result.target_branch = self
1504
result.old_revno, result.old_revid = self.last_revision_info()
1506
self.update_revisions(source, stop_revision)
1507
except DivergedBranches:
1511
if stop_revision is None:
1512
stop_revision = source.last_revision()
1513
self.generate_revision_history(stop_revision)
1514
result.tag_conflicts = source.tags.merge_to(self.tags)
1515
result.new_revno, result.new_revid = self.last_revision_info()
1517
result.master_branch = _hook_master
1518
result.local_branch = self
1520
result.master_branch = self
1521
result.local_branch = None
1523
for hook in Branch.hooks['post_pull']:
1529
def _get_parent_location(self):
1530
_locs = ['parent', 'pull', 'x-pull']
1533
return self.control_files.get(l).read().strip('\n')
1539
def push(self, target, overwrite=False, stop_revision=None,
1540
_override_hook_source_branch=None):
1543
This is the basic concrete implementation of push()
1545
:param _override_hook_source_branch: If specified, run
1546
the hooks passing this Branch as the source, rather than self.
1547
This is for use of RemoteBranch, where push is delegated to the
1548
underlying vfs-based Branch.
1550
# TODO: Public option to disable running hooks - should be trivial but
1554
result = self._push_with_bound_branches(target, overwrite,
1556
_override_hook_source_branch=_override_hook_source_branch)
1561
def _push_with_bound_branches(self, target, overwrite,
1563
_override_hook_source_branch=None):
1564
"""Push from self into target, and into target's master if any.
1566
This is on the base BzrBranch class even though it doesn't support
1567
bound branches because the *target* might be bound.
1570
if _override_hook_source_branch:
1571
result.source_branch = _override_hook_source_branch
1572
for hook in Branch.hooks['post_push']:
1575
bound_location = target.get_bound_location()
1576
if bound_location and target.base != bound_location:
1577
# there is a master branch.
1579
# XXX: Why the second check? Is it even supported for a branch to
1580
# be bound to itself? -- mbp 20070507
1581
master_branch = target.get_master_branch()
1582
master_branch.lock_write()
1584
# push into the master from this branch.
1585
self._basic_push(master_branch, overwrite, stop_revision)
1586
# and push into the target branch from this. Note that we push from
1587
# this branch again, because its considered the highest bandwidth
1589
result = self._basic_push(target, overwrite, stop_revision)
1590
result.master_branch = master_branch
1591
result.local_branch = target
1595
master_branch.unlock()
1598
result = self._basic_push(target, overwrite, stop_revision)
1599
# TODO: Why set master_branch and local_branch if there's no
1600
# binding? Maybe cleaner to just leave them unset? -- mbp
1602
result.master_branch = target
1603
result.local_branch = None
1607
def _basic_push(self, target, overwrite, stop_revision):
1608
"""Basic implementation of push without bound branches or hooks.
1610
Must be called with self read locked and target write locked.
1612
result = PushResult()
1613
result.source_branch = self
1614
result.target_branch = target
1615
result.old_revno, result.old_revid = target.last_revision_info()
1617
target.update_revisions(self, stop_revision)
1618
except DivergedBranches:
1622
target.set_revision_history(self.revision_history())
1623
result.tag_conflicts = self.tags.merge_to(target.tags)
1624
result.new_revno, result.new_revid = target.last_revision_info()
1627
def get_parent(self):
1628
"""See Branch.get_parent."""
1630
assert self.base[-1] == '/'
1631
parent = self._get_parent_location()
1634
# This is an old-format absolute path to a local branch
1635
# turn it into a url
1636
if parent.startswith('/'):
1637
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1639
return urlutils.join(self.base[:-1], parent)
1640
except errors.InvalidURLJoin, e:
1641
raise errors.InaccessibleParent(parent, self.base)
1643
def set_push_location(self, location):
1644
"""See Branch.set_push_location."""
1645
self.get_config().set_user_option(
1646
'push_location', location,
1647
store=_mod_config.STORE_LOCATION_NORECURSE)
1650
def set_parent(self, url):
1651
"""See Branch.set_parent."""
1652
# TODO: Maybe delete old location files?
1653
# URLs should never be unicode, even on the local fs,
1654
# FIXUP this and get_parent in a future branch format bump:
1655
# read and rewrite the file, and have the new format code read
1656
# using .get not .get_utf8. RBC 20060125
1658
if isinstance(url, unicode):
1660
url = url.encode('ascii')
1661
except UnicodeEncodeError:
1662
raise errors.InvalidURL(url,
1663
"Urls must be 7-bit ascii, "
1664
"use bzrlib.urlutils.escape")
1665
url = urlutils.relative_url(self.base, url)
1666
self._set_parent_location(url)
1668
def _set_parent_location(self, url):
1670
self.control_files._transport.delete('parent')
1672
assert isinstance(url, str)
1673
self.control_files.put_bytes('parent', url + '\n')
1675
@deprecated_function(zero_nine)
1676
def tree_config(self):
1677
"""DEPRECATED; call get_config instead.
1678
TreeConfig has become part of BranchConfig."""
1679
return TreeConfig(self)
1682
class BzrBranch5(BzrBranch):
1683
"""A format 5 branch. This supports new features over plan branches.
1685
It has support for a master_branch which is the data for bound branches.
1693
super(BzrBranch5, self).__init__(_format=_format,
1694
_control_files=_control_files,
1696
_repository=_repository)
1699
def pull(self, source, overwrite=False, stop_revision=None,
1701
"""Pull from source into self, updating my master if any.
1703
:param run_hooks: Private parameter - if false, this branch
1704
is being called because it's the master of the primary branch,
1705
so it should not run its hooks.
1707
bound_location = self.get_bound_location()
1708
master_branch = None
1709
if bound_location and source.base != bound_location:
1710
# not pulling from master, so we need to update master.
1711
master_branch = self.get_master_branch()
1712
master_branch.lock_write()
1715
# pull from source into master.
1716
master_branch.pull(source, overwrite, stop_revision,
1718
return super(BzrBranch5, self).pull(source, overwrite,
1719
stop_revision, _hook_master=master_branch,
1720
run_hooks=run_hooks)
1723
master_branch.unlock()
1725
def get_bound_location(self):
1727
return self.control_files.get_utf8('bound').read()[:-1]
1728
except errors.NoSuchFile:
1732
def get_master_branch(self):
1733
"""Return the branch we are bound to.
1735
:return: Either a Branch, or None
1737
This could memoise the branch, but if thats done
1738
it must be revalidated on each new lock.
1739
So for now we just don't memoise it.
1740
# RBC 20060304 review this decision.
1742
bound_loc = self.get_bound_location()
1746
return Branch.open(bound_loc)
1747
except (errors.NotBranchError, errors.ConnectionError), e:
1748
raise errors.BoundBranchConnectionFailure(
1752
def set_bound_location(self, location):
1753
"""Set the target where this branch is bound to.
1755
:param location: URL to the target branch
1758
self.control_files.put_utf8('bound', location+'\n')
1761
self.control_files._transport.delete('bound')
1767
def bind(self, other):
1768
"""Bind this branch to the branch other.
1770
This does not push or pull data between the branches, though it does
1771
check for divergence to raise an error when the branches are not
1772
either the same, or one a prefix of the other. That behaviour may not
1773
be useful, so that check may be removed in future.
1775
:param other: The branch to bind to
1778
# TODO: jam 20051230 Consider checking if the target is bound
1779
# It is debatable whether you should be able to bind to
1780
# a branch which is itself bound.
1781
# Committing is obviously forbidden,
1782
# but binding itself may not be.
1783
# Since we *have* to check at commit time, we don't
1784
# *need* to check here
1786
# we want to raise diverged if:
1787
# last_rev is not in the other_last_rev history, AND
1788
# other_last_rev is not in our history, and do it without pulling
1790
last_rev = _mod_revision.ensure_null(self.last_revision())
1791
if last_rev != _mod_revision.NULL_REVISION:
1794
other_last_rev = other.last_revision()
1795
if not _mod_revision.is_null(other_last_rev):
1796
# neither branch is new, we have to do some work to
1797
# ascertain diversion.
1798
remote_graph = other.repository.get_revision_graph(
1800
local_graph = self.repository.get_revision_graph(last_rev)
1801
if (last_rev not in remote_graph and
1802
other_last_rev not in local_graph):
1803
raise errors.DivergedBranches(self, other)
1806
self.set_bound_location(other.base)
1810
"""If bound, unbind"""
1811
return self.set_bound_location(None)
1815
"""Synchronise this branch with the master branch if any.
1817
:return: None or the last_revision that was pivoted out during the
1820
master = self.get_master_branch()
1821
if master is not None:
1822
old_tip = _mod_revision.ensure_null(self.last_revision())
1823
self.pull(master, overwrite=True)
1824
if self.repository.get_graph().is_ancestor(old_tip,
1825
_mod_revision.ensure_null(self.last_revision())):
1831
class BzrBranchExperimental(BzrBranch5):
1832
"""Bzr experimental branch format
1835
- a revision-history file.
1837
- a lock dir guarding the branch itself
1838
- all of this stored in a branch/ subdirectory
1839
- works with shared repositories.
1840
- a tag dictionary in the branch
1842
This format is new in bzr 0.15, but shouldn't be used for real data,
1845
This class acts as it's own BranchFormat.
1848
_matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1851
def get_format_string(cls):
1852
"""See BranchFormat.get_format_string()."""
1853
return "Bazaar-NG branch format experimental\n"
1856
def get_format_description(cls):
1857
"""See BranchFormat.get_format_description()."""
1858
return "Experimental branch format"
1861
def get_reference(cls, a_bzrdir):
1862
"""Get the target reference of the branch in a_bzrdir.
1864
format probing must have been completed before calling
1865
this method - it is assumed that the format of the branch
1866
in a_bzrdir is correct.
1868
:param a_bzrdir: The bzrdir to get the branch data from.
1869
:return: None if the branch is not a reference branch.
1874
def _initialize_control_files(cls, a_bzrdir, utf8_files, lock_filename,
1876
branch_transport = a_bzrdir.get_branch_transport(cls)
1877
control_files = lockable_files.LockableFiles(branch_transport,
1878
lock_filename, lock_class)
1879
control_files.create_lock()
1880
control_files.lock_write()
1882
for filename, content in utf8_files:
1883
control_files.put_utf8(filename, content)
1885
control_files.unlock()
1888
def initialize(cls, a_bzrdir):
1889
"""Create a branch of this format in a_bzrdir."""
1890
utf8_files = [('format', cls.get_format_string()),
1891
('revision-history', ''),
1892
('branch-name', ''),
1895
cls._initialize_control_files(a_bzrdir, utf8_files,
1896
'lock', lockdir.LockDir)
1897
return cls.open(a_bzrdir, _found=True)
1900
def open(cls, a_bzrdir, _found=False):
1901
"""Return the branch object for a_bzrdir
1903
_found is a private parameter, do not use it. It is used to indicate
1904
if format probing has already be done.
1907
format = BranchFormat.find_format(a_bzrdir)
1908
assert format.__class__ == cls
1909
transport = a_bzrdir.get_branch_transport(None)
1910
control_files = lockable_files.LockableFiles(transport, 'lock',
1912
return cls(_format=cls,
1913
_control_files=control_files,
1915
_repository=a_bzrdir.find_repository())
1918
def is_supported(cls):
1921
def _make_tags(self):
1922
return BasicTags(self)
1925
def supports_tags(cls):
1929
BranchFormat.register_format(BzrBranchExperimental)
1932
class BzrBranch6(BzrBranch5):
1935
def last_revision_info(self):
1936
revision_string = self.control_files.get('last-revision').read()
1937
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
1938
revision_id = cache_utf8.get_cached_utf8(revision_id)
1940
return revno, revision_id
1942
def last_revision(self):
1943
"""Return last revision id, or None"""
1944
revision_id = self.last_revision_info()[1]
1945
if revision_id == _mod_revision.NULL_REVISION:
1949
def _write_last_revision_info(self, revno, revision_id):
1950
"""Simply write out the revision id, with no checks.
1952
Use set_last_revision_info to perform this safely.
1954
Does not update the revision_history cache.
1955
Intended to be called by set_last_revision_info and
1956
_write_revision_history.
1958
if revision_id is None:
1959
revision_id = 'null:'
1960
out_string = '%d %s\n' % (revno, revision_id)
1961
self.control_files.put_bytes('last-revision', out_string)
1964
def set_last_revision_info(self, revno, revision_id):
1965
revision_id = osutils.safe_revision_id(revision_id)
1966
if self._get_append_revisions_only():
1967
self._check_history_violation(revision_id)
1968
self._write_last_revision_info(revno, revision_id)
1969
self._clear_cached_state()
1971
def _check_history_violation(self, revision_id):
1972
last_revision = _mod_revision.ensure_null(self.last_revision())
1973
if _mod_revision.is_null(last_revision):
1975
if last_revision not in self._lefthand_history(revision_id):
1976
raise errors.AppendRevisionsOnlyViolation(self.base)
1978
def _gen_revision_history(self):
1979
"""Generate the revision history from last revision
1981
history = list(self.repository.iter_reverse_revision_history(
1982
self.last_revision()))
1986
def _write_revision_history(self, history):
1987
"""Factored out of set_revision_history.
1989
This performs the actual writing to disk, with format-specific checks.
1990
It is intended to be called by BzrBranch5.set_revision_history.
1992
if len(history) == 0:
1993
last_revision = 'null:'
1995
if history != self._lefthand_history(history[-1]):
1996
raise errors.NotLefthandHistory(history)
1997
last_revision = history[-1]
1998
if self._get_append_revisions_only():
1999
self._check_history_violation(last_revision)
2000
self._write_last_revision_info(len(history), last_revision)
2003
def append_revision(self, *revision_ids):
2004
revision_ids = [osutils.safe_revision_id(r) for r in revision_ids]
2005
if len(revision_ids) == 0:
2007
prev_revno, prev_revision = self.last_revision_info()
2008
for revision in self.repository.get_revisions(revision_ids):
2009
if prev_revision == _mod_revision.NULL_REVISION:
2010
if revision.parent_ids != []:
2011
raise errors.NotLeftParentDescendant(self, prev_revision,
2012
revision.revision_id)
2014
if revision.parent_ids[0] != prev_revision:
2015
raise errors.NotLeftParentDescendant(self, prev_revision,
2016
revision.revision_id)
2017
prev_revision = revision.revision_id
2018
self.set_last_revision_info(prev_revno + len(revision_ids),
2022
def _set_parent_location(self, url):
2023
"""Set the parent branch"""
2024
self._set_config_location('parent_location', url, make_relative=True)
2027
def _get_parent_location(self):
2028
"""Set the parent branch"""
2029
return self._get_config_location('parent_location')
2031
def set_push_location(self, location):
2032
"""See Branch.set_push_location."""
2033
self._set_config_location('push_location', location)
2035
def set_bound_location(self, location):
2036
"""See Branch.set_push_location."""
2038
config = self.get_config()
2039
if location is None:
2040
if config.get_user_option('bound') != 'True':
2043
config.set_user_option('bound', 'False', warn_masked=True)
2046
self._set_config_location('bound_location', location,
2048
config.set_user_option('bound', 'True', warn_masked=True)
2051
def _get_bound_location(self, bound):
2052
"""Return the bound location in the config file.
2054
Return None if the bound parameter does not match"""
2055
config = self.get_config()
2056
config_bound = (config.get_user_option('bound') == 'True')
2057
if config_bound != bound:
2059
return self._get_config_location('bound_location', config=config)
2061
def get_bound_location(self):
2062
"""See Branch.set_push_location."""
2063
return self._get_bound_location(True)
2065
def get_old_bound_location(self):
2066
"""See Branch.get_old_bound_location"""
2067
return self._get_bound_location(False)
2069
def set_append_revisions_only(self, enabled):
2074
self.get_config().set_user_option('append_revisions_only', value,
2077
def _get_append_revisions_only(self):
2078
value = self.get_config().get_user_option('append_revisions_only')
2079
return value == 'True'
2081
def _synchronize_history(self, destination, revision_id):
2082
"""Synchronize last revision and revision history between branches.
2084
This version is most efficient when the destination is also a
2085
BzrBranch6, but works for BzrBranch5, as long as the destination's
2086
repository contains all the lefthand ancestors of the intended
2087
last_revision. If not, set_last_revision_info will fail.
2089
:param destination: The branch to copy the history into
2090
:param revision_id: The revision-id to truncate history at. May
2091
be None to copy complete history.
2093
if revision_id is None:
2094
revno, revision_id = self.last_revision_info()
2096
# To figure out the revno for a random revision, we need to build
2097
# the revision history, and count its length.
2098
# We don't care about the order, just how long it is.
2099
# Alternatively, we could start at the current location, and count
2100
# backwards. But there is no guarantee that we will find it since
2101
# it may be a merged revision.
2102
revno = len(list(self.repository.iter_reverse_revision_history(
2104
destination.set_last_revision_info(revno, revision_id)
2106
def _make_tags(self):
2107
return BasicTags(self)
2110
######################################################################
2111
# results of operations
2114
class _Result(object):
2116
def _show_tag_conficts(self, to_file):
2117
if not getattr(self, 'tag_conflicts', None):
2119
to_file.write('Conflicting tags:\n')
2120
for name, value1, value2 in self.tag_conflicts:
2121
to_file.write(' %s\n' % (name, ))
2124
class PullResult(_Result):
2125
"""Result of a Branch.pull operation.
2127
:ivar old_revno: Revision number before pull.
2128
:ivar new_revno: Revision number after pull.
2129
:ivar old_revid: Tip revision id before pull.
2130
:ivar new_revid: Tip revision id after pull.
2131
:ivar source_branch: Source (local) branch object.
2132
:ivar master_branch: Master branch of the target, or None.
2133
:ivar target_branch: Target/destination branch object.
2137
# DEPRECATED: pull used to return the change in revno
2138
return self.new_revno - self.old_revno
2140
def report(self, to_file):
2141
if self.old_revid == self.new_revid:
2142
to_file.write('No revisions to pull.\n')
2144
to_file.write('Now on revision %d.\n' % self.new_revno)
2145
self._show_tag_conficts(to_file)
2148
class PushResult(_Result):
2149
"""Result of a Branch.push operation.
2151
:ivar old_revno: Revision number before push.
2152
:ivar new_revno: Revision number after push.
2153
:ivar old_revid: Tip revision id before push.
2154
:ivar new_revid: Tip revision id after push.
2155
:ivar source_branch: Source branch object.
2156
:ivar master_branch: Master branch of the target, or None.
2157
:ivar target_branch: Target/destination branch object.
2161
# DEPRECATED: push used to return the change in revno
2162
return self.new_revno - self.old_revno
2164
def report(self, to_file):
2165
"""Write a human-readable description of the result."""
2166
if self.old_revid == self.new_revid:
2167
to_file.write('No new revisions to push.\n')
2169
to_file.write('Pushed up to revision %d.\n' % self.new_revno)
2170
self._show_tag_conficts(to_file)
2173
class BranchCheckResult(object):
2174
"""Results of checking branch consistency.
2179
def __init__(self, branch):
2180
self.branch = branch
2182
def report_results(self, verbose):
2183
"""Report the check results via trace.note.
2185
:param verbose: Requests more detailed display of what was checked,
2188
note('checked branch %s format %s',
2190
self.branch._format)
2193
class Converter5to6(object):
2194
"""Perform an in-place upgrade of format 5 to format 6"""
2196
def convert(self, branch):
2197
# Data for 5 and 6 can peacefully coexist.
2198
format = BzrBranchFormat6()
2199
new_branch = format.open(branch.bzrdir, _found=True)
2201
# Copy source data into target
2202
new_branch.set_last_revision_info(*branch.last_revision_info())
2203
new_branch.set_parent(branch.get_parent())
2204
new_branch.set_bound_location(branch.get_bound_location())
2205
new_branch.set_push_location(branch.get_push_location())
2207
# New branch has no tags by default
2208
new_branch.tags._set_tag_dict({})
2210
# Copying done; now update target format
2211
new_branch.control_files.put_utf8('format',
2212
format.get_format_string())
2214
# Clean up old files
2215
new_branch.control_files._transport.delete('revision-history')
2217
branch.set_parent(None)
2220
branch.set_bound_location(None)
added
removed
bzrlib/branch.py
