87
101
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
105
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:
106
raise NotImplementedError('The Branch class is abstract')
119
@deprecated_method(zero_eight)
120
109
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):
110
"""Open a branch which may be of an old format.
112
Only local branches are supported."""
113
return _Branch(get_transport(base), relax_version_check=True)
117
"""Open an existing branch, rooted at 'base' (url)"""
118
t = get_transport(base)
119
mutter("trying to open %r with transport %r", base, t)
123
def open_containing(url):
142
124
"""Open an existing branch which contains url.
144
126
This probes for a branch at url, and searches upwards from there.
146
128
Basically we keep looking up until we find the control directory or
147
129
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
131
t = get_transport(url)
135
except NotBranchError:
137
new_t = t.clone('..')
138
if new_t.base == t.base:
139
# reached the root, whatever that may be
140
raise NotBranchError('%s is not in a branch' % url)
157
@deprecated_function(zero_eight)
158
144
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)
145
"""Create a new branch, rooted at 'base' (url)"""
146
t = get_transport(base)
147
return _Branch(t, init=True)
167
149
def setup_caching(self, cache_root):
168
150
"""Subclasses that care about caching should override this, and set
169
151
up cached stores located under cache_root.
153
self.cache_root = cache_root
156
class _Branch(Branch):
157
"""A branch stored in the actual filesystem.
159
Note that it's "local" in the context of the filesystem; it doesn't
160
really matter if it's on an nfs/smb/afs/coda/... share, as long as
161
it's writable, and can be accessed via the normal filesystem API.
167
If _lock_mode is true, a positive count of the number of times the
171
Lock object from bzrlib.lock.
173
# We actually expect this class to be somewhat short-lived; part of its
174
# purpose is to try to isolate what bits of the branch logic are tied to
175
# filesystem access, so that in a later step, we can extricate them to
176
# a separarte ("storage") class.
180
_inventory_weave = None
182
# Map some sort of prefix into a namespace
183
# stuff like "revno:10", "revid:", etc.
184
# This should match a prefix with a function which accepts
185
REVISION_NAMESPACES = {}
187
def push_stores(self, branch_to):
188
"""Copy the content of this branches store to branch_to."""
189
if (self._branch_format != branch_to._branch_format
190
or self._branch_format != 4):
191
from bzrlib.fetch import greedy_fetch
192
mutter("falling back to fetch logic to push between %s(%s) and %s(%s)",
193
self, self._branch_format, branch_to, branch_to._branch_format)
194
greedy_fetch(to_branch=branch_to, from_branch=self,
195
revision=self.last_revision())
198
store_pairs = ((self.text_store, branch_to.text_store),
199
(self.inventory_store, branch_to.inventory_store),
200
(self.revision_store, branch_to.revision_store))
202
for from_store, to_store in store_pairs:
203
copy_all(from_store, to_store)
204
except UnlistableStore:
205
raise UnlistableBranch(from_store)
207
def __init__(self, transport, init=False,
208
relax_version_check=False):
209
"""Create new branch object at a particular location.
211
transport -- A Transport object, defining how to access files.
212
(If a string, transport.transport() will be used to
213
create a Transport object)
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)
215
init -- If True, create new control files in a previously
216
unversioned directory. If False, the branch must already
219
relax_version_check -- If true, the usual check for the branch
220
version is not applied. This is intended only for
221
upgrade/recovery type use; it's not guaranteed that
222
all operations will work on old format branches.
224
In the test suite, creation of new trees is tested using the
225
`ScratchBranch` class.
227
assert isinstance(transport, Transport), \
228
"%r is not a Transport" % transport
229
self._transport = transport
232
self._check_format(relax_version_check)
234
def get_store(name, compressed=True, prefixed=False):
235
# FIXME: This approach of assuming stores are all entirely compressed
236
# or entirely uncompressed is tidy, but breaks upgrade from
237
# some existing branches where there's a mixture; we probably
238
# still want the option to look for both.
239
relpath = self._rel_controlfilename(name)
241
store = CompressedTextStore(self._transport.clone(relpath),
244
store = TextStore(self._transport.clone(relpath),
246
#if self._transport.should_cache():
247
# cache_path = os.path.join(self.cache_root, name)
248
# os.mkdir(cache_path)
249
# store = bzrlib.store.CachedStore(store, cache_path)
251
def get_weave(name, prefixed=False):
252
relpath = self._rel_controlfilename(name)
253
ws = WeaveStore(self._transport.clone(relpath), prefixed=prefixed)
254
if self._transport.should_cache():
255
ws.enable_cache = True
258
if self._branch_format == 4:
259
self.inventory_store = get_store('inventory-store')
260
self.text_store = get_store('text-store')
261
self.revision_store = get_store('revision-store')
262
elif self._branch_format == 5:
263
self.control_weaves = get_weave([])
264
self.weave_store = get_weave('weaves')
265
self.revision_store = get_store('revision-store', compressed=False)
266
elif self._branch_format == 6:
267
self.control_weaves = get_weave([])
268
self.weave_store = get_weave('weaves', prefixed=True)
269
self.revision_store = get_store('revision-store', compressed=False,
271
self._transaction = None
274
return '%s(%r)' % (self.__class__.__name__, self._transport.base)
281
if self._lock_mode or self._lock:
282
# XXX: This should show something every time, and be suitable for
283
# headless operation and embedding
284
warn("branch %r was not explicitly unlocked" % self)
287
# TODO: It might be best to do this somewhere else,
288
# but it is nice for a Branch object to automatically
289
# cache it's information.
290
# Alternatively, we could have the Transport objects cache requests
291
# See the earlier discussion about how major objects (like Branch)
292
# should never expect their __del__ function to run.
293
if hasattr(self, 'cache_root') and self.cache_root is not None:
296
shutil.rmtree(self.cache_root)
299
self.cache_root = None
303
return self._transport.base
306
base = property(_get_base)
308
def _finish_transaction(self):
309
"""Exit the current transaction."""
310
if self._transaction is None:
311
raise errors.LockError('Branch %s is not in a transaction' %
313
transaction = self._transaction
314
self._transaction = None
317
def get_transaction(self):
318
"""Return the current active transaction.
320
If no transaction is active, this returns a passthrough object
321
for which all data is immedaitely flushed and no caching happens.
323
if self._transaction is None:
324
return transactions.PassThroughTransaction()
326
return self._transaction
328
def _set_transaction(self, new_transaction):
329
"""Set a new active transaction."""
330
if self._transaction is not None:
331
raise errors.LockError('Branch %s is in a transaction already.' %
333
self._transaction = new_transaction
189
335
def lock_write(self):
190
raise NotImplementedError(self.lock_write)
336
mutter("lock write: %s (%s)", self, self._lock_count)
337
# TODO: Upgrade locking to support using a Transport,
338
# and potentially a remote locking protocol
340
if self._lock_mode != 'w':
341
raise LockError("can't upgrade to a write lock from %r" %
343
self._lock_count += 1
345
self._lock = self._transport.lock_write(
346
self._rel_controlfilename('branch-lock'))
347
self._lock_mode = 'w'
349
self._set_transaction(transactions.PassThroughTransaction())
192
351
def lock_read(self):
193
raise NotImplementedError(self.lock_read)
352
mutter("lock read: %s (%s)", self, self._lock_count)
354
assert self._lock_mode in ('r', 'w'), \
355
"invalid lock mode %r" % self._lock_mode
356
self._lock_count += 1
358
self._lock = self._transport.lock_read(
359
self._rel_controlfilename('branch-lock'))
360
self._lock_mode = 'r'
362
self._set_transaction(transactions.ReadOnlyTransaction())
363
# 5K may be excessive, but hey, its a knob.
364
self.get_transaction().set_cache_size(5000)
195
366
def unlock(self):
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
367
mutter("unlock: %s (%s)", self, self._lock_count)
368
if not self._lock_mode:
369
raise LockError('branch %r is not locked' % (self))
371
if self._lock_count > 1:
372
self._lock_count -= 1
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()
374
self._finish_transaction()
377
self._lock_mode = self._lock_count = None
263
379
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
380
"""Return absolute filename for something in the branch"""
381
return self._transport.abspath(name)
383
def relpath(self, path):
384
"""Return path relative to this branch of something inside it.
386
Raises an error if path is not in this branch."""
387
return self._transport.relpath(path)
390
def _rel_controlfilename(self, file_or_path):
391
if isinstance(file_or_path, basestring):
392
file_or_path = [file_or_path]
393
return [bzrlib.BZRDIR] + file_or_path
395
def controlfilename(self, file_or_path):
396
"""Return location relative to branch."""
397
return self._transport.abspath(self._rel_controlfilename(file_or_path))
400
def controlfile(self, file_or_path, mode='r'):
401
"""Open a control file for this branch.
403
There are two classes of file in the control directory: text
404
and binary. binary files are untranslated byte streams. Text
405
control files are stored with Unix newlines and in UTF-8, even
406
if the platform or locale defaults are different.
408
Controlfiles should almost never be opened in write mode but
409
rather should be atomically copied and replaced using atomicfile.
413
relpath = self._rel_controlfilename(file_or_path)
414
#TODO: codecs.open() buffers linewise, so it was overloaded with
415
# a much larger buffer, do we need to do the same for getreader/getwriter?
417
return self._transport.get(relpath)
419
raise BzrError("Branch.controlfile(mode='wb') is not supported, use put_controlfiles")
421
return codecs.getreader('utf-8')(self._transport.get(relpath), errors='replace')
423
raise BzrError("Branch.controlfile(mode='w') is not supported, use put_controlfiles")
425
raise BzrError("invalid controlfile mode %r" % mode)
427
def put_controlfile(self, path, f, encode=True):
428
"""Write an entry as a controlfile.
430
:param path: The path to put the file, relative to the .bzr control
432
:param f: A file-like or string object whose contents should be copied.
433
:param encode: If true, encode the contents as utf-8
435
self.put_controlfiles([(path, f)], encode=encode)
437
def put_controlfiles(self, files, encode=True):
438
"""Write several entries as controlfiles.
440
:param files: A list of [(path, file)] pairs, where the path is the directory
441
underneath the bzr control directory
442
:param encode: If true, encode the contents as utf-8
446
for path, f in files:
448
if isinstance(f, basestring):
449
f = f.encode('utf-8', 'replace')
451
f = codecs.getwriter('utf-8')(f, errors='replace')
452
path = self._rel_controlfilename(path)
453
ctrl_files.append((path, f))
454
self._transport.put_multi(ctrl_files)
456
def _make_control(self):
457
from bzrlib.inventory import Inventory
458
from bzrlib.weavefile import write_weave_v5
459
from bzrlib.weave import Weave
461
# Create an empty inventory
463
# if we want per-tree root ids then this is the place to set
464
# them; they're not needed for now and so ommitted for
466
bzrlib.xml5.serializer_v5.write_inventory(Inventory(), sio)
467
empty_inv = sio.getvalue()
469
bzrlib.weavefile.write_weave_v5(Weave(), sio)
470
empty_weave = sio.getvalue()
472
dirs = [[], 'revision-store', 'weaves']
474
"This is a Bazaar-NG control directory.\n"
475
"Do not change any files in this directory.\n"),
476
('branch-format', BZR_BRANCH_FORMAT_6),
477
('revision-history', ''),
480
('pending-merges', ''),
481
('inventory', empty_inv),
482
('inventory.weave', empty_weave),
483
('ancestry.weave', empty_weave)
485
cfn = self._rel_controlfilename
486
self._transport.mkdir_multi([cfn(d) for d in dirs])
487
self.put_controlfiles(files)
488
mutter('created control directory in ' + self._transport.base)
490
def _check_format(self, relax_version_check):
491
"""Check this branch format is supported.
493
The format level is stored, as an integer, in
494
self._branch_format for code that needs to check it later.
496
In the future, we might need different in-memory Branch
497
classes to support downlevel branches. But not yet.
500
fmt = self.controlfile('branch-format', 'r').read()
502
raise NotBranchError(self.base)
503
mutter("got branch format %r", fmt)
504
if fmt == BZR_BRANCH_FORMAT_6:
505
self._branch_format = 6
506
elif fmt == BZR_BRANCH_FORMAT_5:
507
self._branch_format = 5
508
elif fmt == BZR_BRANCH_FORMAT_4:
509
self._branch_format = 4
511
if (not relax_version_check
512
and self._branch_format not in (5, 6)):
513
raise errors.UnsupportedFormatError(
514
'sorry, branch format %r not supported' % fmt,
515
['use a different bzr version',
516
'or remove the .bzr directory'
517
' and "bzr init" again'])
519
def get_root_id(self):
520
"""Return the id of this branches root"""
521
inv = self.read_working_inventory()
522
return inv.root.file_id
524
def set_root_id(self, file_id):
525
inv = self.read_working_inventory()
526
orig_root_id = inv.root.file_id
527
del inv._byid[inv.root.file_id]
528
inv.root.file_id = file_id
529
inv._byid[inv.root.file_id] = inv.root
532
if entry.parent_id in (None, orig_root_id):
533
entry.parent_id = inv.root.file_id
534
self._write_inventory(inv)
536
def read_working_inventory(self):
537
"""Read the working inventory."""
540
# ElementTree does its own conversion from UTF-8, so open in
542
f = self.controlfile('inventory', 'rb')
543
return bzrlib.xml5.serializer_v5.read_inventory(f)
548
def _write_inventory(self, inv):
549
"""Update the working inventory.
551
That is to say, the inventory describing changes underway, that
552
will be committed to the next revision.
554
from cStringIO import StringIO
558
bzrlib.xml5.serializer_v5.write_inventory(inv, sio)
560
# Transport handles atomicity
561
self.put_controlfile('inventory', sio)
565
mutter('wrote working inventory')
567
inventory = property(read_working_inventory, _write_inventory, None,
568
"""Inventory for the working copy.""")
570
def add(self, files, ids=None):
571
"""Make files versioned.
573
Note that the command line normally calls smart_add instead,
574
which can automatically recurse.
576
This puts the files in the Added state, so that they will be
577
recorded by the next commit.
580
List of paths to add, relative to the base of the tree.
583
If set, use these instead of automatically generated ids.
584
Must be the same length as the list of files, but may
585
contain None for ids that are to be autogenerated.
587
TODO: Perhaps have an option to add the ids even if the files do
590
TODO: Perhaps yield the ids and paths as they're added.
592
# TODO: Re-adding a file that is removed in the working copy
593
# should probably put it back with the previous ID.
594
if isinstance(files, basestring):
595
assert(ids is None or isinstance(ids, basestring))
601
ids = [None] * len(files)
603
assert(len(ids) == len(files))
607
inv = self.read_working_inventory()
608
for f,file_id in zip(files, ids):
609
if is_control_file(f):
610
raise BzrError("cannot add control file %s" % quotefn(f))
615
raise BzrError("cannot add top-level %r" % f)
617
fullpath = os.path.normpath(self.abspath(f))
620
kind = file_kind(fullpath)
622
# maybe something better?
623
raise BzrError('cannot add: not a regular file, symlink or directory: %s' % quotefn(f))
625
if not InventoryEntry.versionable_kind(kind):
626
raise BzrError('cannot add: not a versionable file ('
627
'i.e. regular file, symlink or directory): %s' % quotefn(f))
630
file_id = gen_file_id(f)
631
inv.add_path(f, kind=kind, file_id=file_id)
633
mutter("add file %s file_id:{%s} kind=%r" % (f, file_id, kind))
635
self._write_inventory(inv)
640
def print_file(self, file, revno):
641
"""Print `file` to stdout."""
644
tree = self.revision_tree(self.get_rev_id(revno))
645
# use inventory as it was in that revision
646
file_id = tree.inventory.path2id(file)
648
raise BzrError("%r is not present in revision %s" % (file, revno))
649
tree.print_file(file_id)
654
def remove(self, files, verbose=False):
655
"""Mark nominated files for removal from the inventory.
657
This does not remove their text. This does not run on
659
TODO: Refuse to remove modified files unless --force is given?
661
TODO: Do something useful with directories.
663
TODO: Should this remove the text or not? Tough call; not
664
removing may be useful and the user can just use use rm, and
665
is the opposite of add. Removing it is consistent with most
666
other tools. Maybe an option.
668
## TODO: Normalize names
669
## TODO: Remove nested loops; better scalability
670
if isinstance(files, basestring):
676
tree = self.working_tree()
679
# do this before any modifications
683
raise BzrError("cannot remove unversioned file %s" % quotefn(f))
684
mutter("remove inventory entry %s {%s}" % (quotefn(f), fid))
686
# having remove it, it must be either ignored or unknown
687
if tree.is_ignored(f):
691
show_status(new_status, inv[fid].kind, quotefn(f))
694
self._write_inventory(inv)
698
# FIXME: this doesn't need to be a branch method
699
def set_inventory(self, new_inventory_list):
700
from bzrlib.inventory import Inventory, InventoryEntry
701
inv = Inventory(self.get_root_id())
702
for path, file_id, parent, kind in new_inventory_list:
703
name = os.path.basename(path)
706
# fixme, there should be a factory function inv,add_??
707
if kind == 'directory':
708
inv.add(inventory.InventoryDirectory(file_id, name, parent))
710
inv.add(inventory.InventoryFile(file_id, name, parent))
711
elif kind == 'symlink':
712
inv.add(inventory.InventoryLink(file_id, name, parent))
714
raise BzrError("unknown kind %r" % kind)
715
self._write_inventory(inv)
718
"""Return all unknown files.
720
These are files in the working directory that are not versioned or
721
control files or ignored.
723
>>> b = ScratchBranch(files=['foo', 'foo~'])
724
>>> list(b.unknowns())
727
>>> list(b.unknowns())
730
>>> list(b.unknowns())
733
return self.working_tree().unknowns()
736
def append_revision(self, *revision_ids):
737
for revision_id in revision_ids:
738
mutter("add {%s} to revision-history" % revision_id)
741
rev_history = self.revision_history()
742
rev_history.extend(revision_ids)
743
self.put_controlfile('revision-history', '\n'.join(rev_history))
747
def has_revision(self, revision_id):
748
"""True if this branch has a copy of the revision.
750
This does not necessarily imply the revision is merge
751
or on the mainline."""
752
return (revision_id is None
753
or revision_id in self.revision_store)
755
def get_revision_xml_file(self, revision_id):
756
"""Return XML file object for revision object."""
757
if not revision_id or not isinstance(revision_id, basestring):
758
raise InvalidRevisionId(revision_id)
763
return self.revision_store[revision_id]
764
except (IndexError, KeyError):
765
raise bzrlib.errors.NoSuchRevision(self, revision_id)
770
get_revision_xml = get_revision_xml_file
772
def get_revision_xml(self, revision_id):
773
return self.get_revision_xml_file(revision_id).read()
776
def get_revision(self, revision_id):
777
"""Return the Revision object for a named revision"""
778
xml_file = self.get_revision_xml_file(revision_id)
781
r = bzrlib.xml5.serializer_v5.read_revision(xml_file)
782
except SyntaxError, e:
783
raise bzrlib.errors.BzrError('failed to unpack revision_xml',
787
assert r.revision_id == revision_id
354
790
def get_revision_delta(self, revno):
355
791
"""Return the delta for one revision.
672
1318
if revno < 1 or revno > self.revno():
673
1319
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
my_ancestry = self.repository.get_ancestry(last_rev,
1468
if stop_revision in my_ancestry:
1469
# last_revision is a descendant of stop_revision
1471
self.generate_revision_history(stop_revision, last_rev=last_rev,
1476
def basis_tree(self):
1477
"""See Branch.basis_tree."""
1478
return self.repository.revision_tree(self.last_revision())
1480
@deprecated_method(zero_eight)
1481
def working_tree(self):
1482
"""Create a Working tree object for this branch."""
1484
from bzrlib.transport.local import LocalTransport
1485
if (self.base.find('://') != -1 or
1486
not isinstance(self._transport, LocalTransport)):
1487
raise NoWorkingTree(self.base)
1488
return self.bzrdir.open_workingtree()
1491
def pull(self, source, overwrite=False, stop_revision=None,
1492
_hook_master=None, run_hooks=True):
1495
:param _hook_master: Private parameter - set the branch to
1496
be supplied as the master to push hooks.
1497
:param run_hooks: Private parameter - if false, this branch
1498
is being called because it's the master of the primary branch,
1499
so it should not run its hooks.
1501
result = PullResult()
1502
result.source_branch = source
1503
result.target_branch = self
1506
result.old_revno, result.old_revid = self.last_revision_info()
1508
self.update_revisions(source, stop_revision)
1509
except DivergedBranches:
1513
if stop_revision is None:
1514
stop_revision = source.last_revision()
1515
self.generate_revision_history(stop_revision)
1516
result.tag_conflicts = source.tags.merge_to(self.tags)
1517
result.new_revno, result.new_revid = self.last_revision_info()
1519
result.master_branch = _hook_master
1520
result.local_branch = self
1522
result.master_branch = self
1523
result.local_branch = None
1525
for hook in Branch.hooks['post_pull']:
1531
def _get_parent_location(self):
1532
_locs = ['parent', 'pull', 'x-pull']
1535
return self.control_files.get(l).read().strip('\n')
1541
def push(self, target, overwrite=False, stop_revision=None,
1542
_override_hook_source_branch=None):
1545
This is the basic concrete implementation of push()
1547
:param _override_hook_source_branch: If specified, run
1548
the hooks passing this Branch as the source, rather than self.
1549
This is for use of RemoteBranch, where push is delegated to the
1550
underlying vfs-based Branch.
1552
# TODO: Public option to disable running hooks - should be trivial but
1556
result = self._push_with_bound_branches(target, overwrite,
1558
_override_hook_source_branch=_override_hook_source_branch)
1563
def _push_with_bound_branches(self, target, overwrite,
1565
_override_hook_source_branch=None):
1566
"""Push from self into target, and into target's master if any.
1568
This is on the base BzrBranch class even though it doesn't support
1569
bound branches because the *target* might be bound.
1572
if _override_hook_source_branch:
1573
result.source_branch = _override_hook_source_branch
1574
for hook in Branch.hooks['post_push']:
1577
bound_location = target.get_bound_location()
1578
if bound_location and target.base != bound_location:
1579
# there is a master branch.
1581
# XXX: Why the second check? Is it even supported for a branch to
1582
# be bound to itself? -- mbp 20070507
1583
master_branch = target.get_master_branch()
1584
master_branch.lock_write()
1586
# push into the master from this branch.
1587
self._basic_push(master_branch, overwrite, stop_revision)
1588
# and push into the target branch from this. Note that we push from
1589
# this branch again, because its considered the highest bandwidth
1591
result = self._basic_push(target, overwrite, stop_revision)
1592
result.master_branch = master_branch
1593
result.local_branch = target
1597
master_branch.unlock()
1600
result = self._basic_push(target, overwrite, stop_revision)
1601
# TODO: Why set master_branch and local_branch if there's no
1602
# binding? Maybe cleaner to just leave them unset? -- mbp
1604
result.master_branch = target
1605
result.local_branch = None
1609
def _basic_push(self, target, overwrite, stop_revision):
1610
"""Basic implementation of push without bound branches or hooks.
1612
Must be called with self read locked and target write locked.
1614
result = PushResult()
1615
result.source_branch = self
1616
result.target_branch = target
1617
result.old_revno, result.old_revid = target.last_revision_info()
1619
target.update_revisions(self, stop_revision)
1620
except DivergedBranches:
1624
target.set_revision_history(self.revision_history())
1625
result.tag_conflicts = self.tags.merge_to(target.tags)
1626
result.new_revno, result.new_revid = target.last_revision_info()
1629
def get_parent(self):
1630
"""See Branch.get_parent."""
1632
assert self.base[-1] == '/'
1633
parent = self._get_parent_location()
1636
# This is an old-format absolute path to a local branch
1637
# turn it into a url
1638
if parent.startswith('/'):
1639
parent = urlutils.local_path_to_url(parent.decode('utf8'))
1641
return urlutils.join(self.base[:-1], parent)
1642
except errors.InvalidURLJoin, e:
1643
raise errors.InaccessibleParent(parent, self.base)
1645
def set_push_location(self, location):
1646
"""See Branch.set_push_location."""
1647
self.get_config().set_user_option(
1648
'push_location', location,
1649
store=_mod_config.STORE_LOCATION_NORECURSE)
1652
def set_parent(self, url):
1653
"""See Branch.set_parent."""
1654
# TODO: Maybe delete old location files?
1655
# URLs should never be unicode, even on the local fs,
1656
# FIXUP this and get_parent in a future branch format bump:
1657
# read and rewrite the file, and have the new format code read
1658
# using .get not .get_utf8. RBC 20060125
1660
if isinstance(url, unicode):
1662
url = url.encode('ascii')
1663
except UnicodeEncodeError:
1664
raise errors.InvalidURL(url,
1665
"Urls must be 7-bit ascii, "
1666
"use bzrlib.urlutils.escape")
1667
url = urlutils.relative_url(self.base, url)
1668
self._set_parent_location(url)
1670
def _set_parent_location(self, url):
1672
self.control_files._transport.delete('parent')
1674
assert isinstance(url, str)
1675
self.control_files.put_bytes('parent', url + '\n')
1677
@deprecated_function(zero_nine)
1678
def tree_config(self):
1679
"""DEPRECATED; call get_config instead.
1680
TreeConfig has become part of BranchConfig."""
1681
return TreeConfig(self)
1684
class BzrBranch5(BzrBranch):
1685
"""A format 5 branch. This supports new features over plan branches.
1687
It has support for a master_branch which is the data for bound branches.
1695
super(BzrBranch5, self).__init__(_format=_format,
1696
_control_files=_control_files,
1698
_repository=_repository)
1701
def pull(self, source, overwrite=False, stop_revision=None,
1703
"""Pull from source into self, updating my master if any.
1705
:param run_hooks: Private parameter - if false, this branch
1706
is being called because it's the master of the primary branch,
1707
so it should not run its hooks.
1709
bound_location = self.get_bound_location()
1710
master_branch = None
1711
if bound_location and source.base != bound_location:
1712
# not pulling from master, so we need to update master.
1713
master_branch = self.get_master_branch()
1714
master_branch.lock_write()
1717
# pull from source into master.
1718
master_branch.pull(source, overwrite, stop_revision,
1720
return super(BzrBranch5, self).pull(source, overwrite,
1721
stop_revision, _hook_master=master_branch,
1722
run_hooks=run_hooks)
1725
master_branch.unlock()
1727
def get_bound_location(self):
1729
return self.control_files.get_utf8('bound').read()[:-1]
1730
except errors.NoSuchFile:
1734
def get_master_branch(self):
1735
"""Return the branch we are bound to.
1737
:return: Either a Branch, or None
1739
This could memoise the branch, but if thats done
1740
it must be revalidated on each new lock.
1741
So for now we just don't memoise it.
1742
# RBC 20060304 review this decision.
1744
bound_loc = self.get_bound_location()
1748
return Branch.open(bound_loc)
1749
except (errors.NotBranchError, errors.ConnectionError), e:
1750
raise errors.BoundBranchConnectionFailure(
1754
def set_bound_location(self, location):
1755
"""Set the target where this branch is bound to.
1757
:param location: URL to the target branch
1760
self.control_files.put_utf8('bound', location+'\n')
1763
self.control_files._transport.delete('bound')
1325
class ScratchBranch(_Branch):
1326
"""Special test class: a branch that cleans up after itself.
1328
>>> b = ScratchBranch()
1336
def __init__(self, files=[], dirs=[], base=None):
1337
"""Make a test branch.
1339
This creates a temporary directory and runs init-tree in it.
1341
If any files are listed, they are created in the working copy.
1343
from tempfile import mkdtemp
1348
if isinstance(base, basestring):
1349
base = get_transport(base)
1350
_Branch.__init__(self, base, init=init)
1352
self._transport.mkdir(d)
1355
self._transport.put(f, 'content of %s' % f)
1360
>>> orig = ScratchBranch(files=["file1", "file2"])
1361
>>> clone = orig.clone()
1362
>>> if os.name != 'nt':
1363
... os.path.samefile(orig.base, clone.base)
1365
... orig.base == clone.base
1368
>>> os.path.isfile(os.path.join(clone.base, "file1"))
1371
from shutil import copytree
1372
from tempfile import mkdtemp
1375
copytree(self.base, base, symlinks=True)
1376
return ScratchBranch(base=base)
1382
"""Destroy the test branch, removing the scratch directory."""
1383
from shutil import rmtree
1386
mutter("delete ScratchBranch %s" % self.base)
1389
# Work around for shutil.rmtree failing on Windows when
1390
# readonly files are encountered
1391
mutter("hit exception in destroying ScratchBranch: %s" % e)
1392
for root, dirs, files in os.walk(self.base, topdown=False):
1394
os.chmod(os.path.join(root, name), 0700)
1396
self._transport = None
1400
######################################################################
1404
def is_control_file(filename):
1405
## FIXME: better check
1406
filename = os.path.normpath(filename)
1407
while filename != '':
1408
head, tail = os.path.split(filename)
1409
## mutter('check %r for control file' % ((head, tail), ))
1410
if tail == bzrlib.BZRDIR:
1769
def bind(self, other):
1770
"""Bind this branch to the branch other.
1772
This does not push or pull data between the branches, though it does
1773
check for divergence to raise an error when the branches are not
1774
either the same, or one a prefix of the other. That behaviour may not
1775
be useful, so that check may be removed in future.
1777
:param other: The branch to bind to
1780
# TODO: jam 20051230 Consider checking if the target is bound
1781
# It is debatable whether you should be able to bind to
1782
# a branch which is itself bound.
1783
# Committing is obviously forbidden,
1784
# but binding itself may not be.
1785
# Since we *have* to check at commit time, we don't
1786
# *need* to check here
1788
# we want to raise diverged if:
1789
# last_rev is not in the other_last_rev history, AND
1790
# other_last_rev is not in our history, and do it without pulling
1792
last_rev = _mod_revision.ensure_null(self.last_revision())
1793
if last_rev != _mod_revision.NULL_REVISION:
1796
other_last_rev = other.last_revision()
1797
if not _mod_revision.is_null(other_last_rev):
1798
# neither branch is new, we have to do some work to
1799
# ascertain diversion.
1800
remote_graph = other.repository.get_revision_graph(
1802
local_graph = self.repository.get_revision_graph(last_rev)
1803
if (last_rev not in remote_graph and
1804
other_last_rev not in local_graph):
1805
raise errors.DivergedBranches(self, other)
1808
self.set_bound_location(other.base)
1812
"""If bound, unbind"""
1813
return self.set_bound_location(None)
1817
"""Synchronise this branch with the master branch if any.
1819
:return: None or the last_revision that was pivoted out during the
1822
master = self.get_master_branch()
1823
if master is not None:
1824
old_tip = self.last_revision()
1825
self.pull(master, overwrite=True)
1826
if old_tip in self.repository.get_ancestry(
1827
_mod_revision.ensure_null(self.last_revision()),
1834
class BzrBranchExperimental(BzrBranch5):
1835
"""Bzr experimental branch format
1838
- a revision-history file.
1840
- a lock dir guarding the branch itself
1841
- all of this stored in a branch/ subdirectory
1842
- works with shared repositories.
1843
- a tag dictionary in the branch
1845
This format is new in bzr 0.15, but shouldn't be used for real data,
1848
This class acts as it's own BranchFormat.
1851
_matchingbzrdir = bzrdir.BzrDirMetaFormat1()
1854
def get_format_string(cls):
1855
"""See BranchFormat.get_format_string()."""
1856
return "Bazaar-NG branch format experimental\n"
1859
def get_format_description(cls):
1860
"""See BranchFormat.get_format_description()."""
1861
return "Experimental branch format"
1864
def get_reference(cls, a_bzrdir):
1865
"""Get the target reference of the branch in a_bzrdir.
1867
format probing must have been completed before calling
1868
this method - it is assumed that the format of the branch
1869
in a_bzrdir is correct.
1871
:param a_bzrdir: The bzrdir to get the branch data from.
1872
:return: None if the branch is not a reference branch.
1877
def _initialize_control_files(cls, a_bzrdir, utf8_files, lock_filename,
1879
branch_transport = a_bzrdir.get_branch_transport(cls)
1880
control_files = lockable_files.LockableFiles(branch_transport,
1881
lock_filename, lock_class)
1882
control_files.create_lock()
1883
control_files.lock_write()
1885
for filename, content in utf8_files:
1886
control_files.put_utf8(filename, content)
1888
control_files.unlock()
1891
def initialize(cls, a_bzrdir):
1892
"""Create a branch of this format in a_bzrdir."""
1893
utf8_files = [('format', cls.get_format_string()),
1894
('revision-history', ''),
1895
('branch-name', ''),
1898
cls._initialize_control_files(a_bzrdir, utf8_files,
1899
'lock', lockdir.LockDir)
1900
return cls.open(a_bzrdir, _found=True)
1903
def open(cls, a_bzrdir, _found=False):
1904
"""Return the branch object for a_bzrdir
1906
_found is a private parameter, do not use it. It is used to indicate
1907
if format probing has already be done.
1910
format = BranchFormat.find_format(a_bzrdir)
1911
assert format.__class__ == cls
1912
transport = a_bzrdir.get_branch_transport(None)
1913
control_files = lockable_files.LockableFiles(transport, 'lock',
1915
return cls(_format=cls,
1916
_control_files=control_files,
1918
_repository=a_bzrdir.find_repository())
1921
def is_supported(cls):
1924
def _make_tags(self):
1925
return BasicTags(self)
1928
def supports_tags(cls):
1932
BranchFormat.register_format(BzrBranchExperimental)
1935
class BzrBranch6(BzrBranch5):
1938
def last_revision_info(self):
1939
revision_string = self.control_files.get('last-revision').read()
1940
revno, revision_id = revision_string.rstrip('\n').split(' ', 1)
1941
revision_id = cache_utf8.get_cached_utf8(revision_id)
1943
return revno, revision_id
1945
def last_revision(self):
1946
"""Return last revision id, or None"""
1947
revision_id = self.last_revision_info()[1]
1948
if revision_id == _mod_revision.NULL_REVISION:
1952
def _write_last_revision_info(self, revno, revision_id):
1953
"""Simply write out the revision id, with no checks.
1955
Use set_last_revision_info to perform this safely.
1957
Does not update the revision_history cache.
1958
Intended to be called by set_last_revision_info and
1959
_write_revision_history.
1961
if revision_id is None:
1962
revision_id = 'null:'
1963
out_string = '%d %s\n' % (revno, revision_id)
1964
self.control_files.put_bytes('last-revision', out_string)
1967
def set_last_revision_info(self, revno, revision_id):
1968
revision_id = osutils.safe_revision_id(revision_id)
1969
if self._get_append_revisions_only():
1970
self._check_history_violation(revision_id)
1971
self._write_last_revision_info(revno, revision_id)
1972
self._clear_cached_state()
1974
def _check_history_violation(self, revision_id):
1975
last_revision = _mod_revision.ensure_null(self.last_revision())
1976
if _mod_revision.is_null(last_revision):
1978
if last_revision not in self._lefthand_history(revision_id):
1979
raise errors.AppendRevisionsOnlyViolation(self.base)
1981
def _gen_revision_history(self):
1982
"""Generate the revision history from last revision
1984
history = list(self.repository.iter_reverse_revision_history(
1985
self.last_revision()))
1989
def _write_revision_history(self, history):
1990
"""Factored out of set_revision_history.
1992
This performs the actual writing to disk, with format-specific checks.
1993
It is intended to be called by BzrBranch5.set_revision_history.
1995
if len(history) == 0:
1996
last_revision = 'null:'
1998
if history != self._lefthand_history(history[-1]):
1999
raise errors.NotLefthandHistory(history)
2000
last_revision = history[-1]
2001
if self._get_append_revisions_only():
2002
self._check_history_violation(last_revision)
2003
self._write_last_revision_info(len(history), last_revision)
2006
def append_revision(self, *revision_ids):
2007
revision_ids = [osutils.safe_revision_id(r) for r in revision_ids]
2008
if len(revision_ids) == 0:
2010
prev_revno, prev_revision = self.last_revision_info()
2011
for revision in self.repository.get_revisions(revision_ids):
2012
if prev_revision == _mod_revision.NULL_REVISION:
2013
if revision.parent_ids != []:
2014
raise errors.NotLeftParentDescendant(self, prev_revision,
2015
revision.revision_id)
2017
if revision.parent_ids[0] != prev_revision:
2018
raise errors.NotLeftParentDescendant(self, prev_revision,
2019
revision.revision_id)
2020
prev_revision = revision.revision_id
2021
self.set_last_revision_info(prev_revno + len(revision_ids),
2025
def _set_parent_location(self, url):
2026
"""Set the parent branch"""
2027
self._set_config_location('parent_location', url, make_relative=True)
2030
def _get_parent_location(self):
2031
"""Set the parent branch"""
2032
return self._get_config_location('parent_location')
2034
def set_push_location(self, location):
2035
"""See Branch.set_push_location."""
2036
self._set_config_location('push_location', location)
2038
def set_bound_location(self, location):
2039
"""See Branch.set_push_location."""
2041
config = self.get_config()
2042
if location is None:
2043
if config.get_user_option('bound') != 'True':
2046
config.set_user_option('bound', 'False', warn_masked=True)
2049
self._set_config_location('bound_location', location,
2051
config.set_user_option('bound', 'True', warn_masked=True)
2054
def _get_bound_location(self, bound):
2055
"""Return the bound location in the config file.
2057
Return None if the bound parameter does not match"""
2058
config = self.get_config()
2059
config_bound = (config.get_user_option('bound') == 'True')
2060
if config_bound != bound:
2062
return self._get_config_location('bound_location', config=config)
2064
def get_bound_location(self):
2065
"""See Branch.set_push_location."""
2066
return self._get_bound_location(True)
2068
def get_old_bound_location(self):
2069
"""See Branch.get_old_bound_location"""
2070
return self._get_bound_location(False)
2072
def set_append_revisions_only(self, enabled):
2077
self.get_config().set_user_option('append_revisions_only', value,
2080
def _get_append_revisions_only(self):
2081
value = self.get_config().get_user_option('append_revisions_only')
2082
return value == 'True'
2084
def _synchronize_history(self, destination, revision_id):
2085
"""Synchronize last revision and revision history between branches.
2087
This version is most efficient when the destination is also a
2088
BzrBranch6, but works for BzrBranch5, as long as the destination's
2089
repository contains all the lefthand ancestors of the intended
2090
last_revision. If not, set_last_revision_info will fail.
2092
:param destination: The branch to copy the history into
2093
:param revision_id: The revision-id to truncate history at. May
2094
be None to copy complete history.
2096
if revision_id is None:
2097
revno, revision_id = self.last_revision_info()
2099
# To figure out the revno for a random revision, we need to build
2100
# the revision history, and count its length.
2101
# We don't care about the order, just how long it is.
2102
# Alternatively, we could start at the current location, and count
2103
# backwards. But there is no guarantee that we will find it since
2104
# it may be a merged revision.
2105
revno = len(list(self.repository.iter_reverse_revision_history(
2107
destination.set_last_revision_info(revno, revision_id)
2109
def _make_tags(self):
2110
return BasicTags(self)
2113
######################################################################
2114
# results of operations
2117
class _Result(object):
2119
def _show_tag_conficts(self, to_file):
2120
if not getattr(self, 'tag_conflicts', None):
2122
to_file.write('Conflicting tags:\n')
2123
for name, value1, value2 in self.tag_conflicts:
2124
to_file.write(' %s\n' % (name, ))
2127
class PullResult(_Result):
2128
"""Result of a Branch.pull operation.
2130
:ivar old_revno: Revision number before pull.
2131
:ivar new_revno: Revision number after pull.
2132
:ivar old_revid: Tip revision id before pull.
2133
:ivar new_revid: Tip revision id after pull.
2134
:ivar source_branch: Source (local) branch object.
2135
:ivar master_branch: Master branch of the target, or None.
2136
:ivar target_branch: Target/destination branch object.
2140
# DEPRECATED: pull used to return the change in revno
2141
return self.new_revno - self.old_revno
2143
def report(self, to_file):
2144
if self.old_revid == self.new_revid:
2145
to_file.write('No revisions to pull.\n')
2147
to_file.write('Now on revision %d.\n' % self.new_revno)
2148
self._show_tag_conficts(to_file)
2151
class PushResult(_Result):
2152
"""Result of a Branch.push operation.
2154
:ivar old_revno: Revision number before push.
2155
:ivar new_revno: Revision number after push.
2156
:ivar old_revid: Tip revision id before push.
2157
:ivar new_revid: Tip revision id after push.
2158
:ivar source_branch: Source branch object.
2159
:ivar master_branch: Master branch of the target, or None.
2160
:ivar target_branch: Target/destination branch object.
2164
# DEPRECATED: push used to return the change in revno
2165
return self.new_revno - self.old_revno
2167
def report(self, to_file):
2168
"""Write a human-readable description of the result."""
2169
if self.old_revid == self.new_revid:
2170
to_file.write('No new revisions to push.\n')
2172
to_file.write('Pushed up to revision %d.\n' % self.new_revno)
2173
self._show_tag_conficts(to_file)
2176
class BranchCheckResult(object):
2177
"""Results of checking branch consistency.
2182
def __init__(self, branch):
2183
self.branch = branch
2185
def report_results(self, verbose):
2186
"""Report the check results via trace.note.
2188
:param verbose: Requests more detailed display of what was checked,
2191
note('checked branch %s format %s',
2193
self.branch._format)
2196
class Converter5to6(object):
2197
"""Perform an in-place upgrade of format 5 to format 6"""
2199
def convert(self, branch):
2200
# Data for 5 and 6 can peacefully coexist.
2201
format = BzrBranchFormat6()
2202
new_branch = format.open(branch.bzrdir, _found=True)
2204
# Copy source data into target
2205
new_branch.set_last_revision_info(*branch.last_revision_info())
2206
new_branch.set_parent(branch.get_parent())
2207
new_branch.set_bound_location(branch.get_bound_location())
2208
new_branch.set_push_location(branch.get_push_location())
2210
# New branch has no tags by default
2211
new_branch.tags._set_tag_dict({})
2213
# Copying done; now update target format
2214
new_branch.control_files.put_utf8('format',
2215
format.get_format_string())
2217
# Clean up old files
2218
new_branch.control_files._transport.delete('revision-history')
2220
branch.set_parent(None)
2223
branch.set_bound_location(None)
1412
if filename == head:
1419
def gen_file_id(name):
1420
"""Return new file id.
1422
This should probably generate proper UUIDs, but for the moment we
1423
cope with just randomness because running uuidgen every time is
1426
from binascii import hexlify
1427
from time import time
1429
# get last component
1430
idx = name.rfind('/')
1432
name = name[idx+1 : ]
1433
idx = name.rfind('\\')
1435
name = name[idx+1 : ]
1437
# make it not a hidden file
1438
name = name.lstrip('.')
1440
# remove any wierd characters; we don't escape them but rather
1441
# just pull them out
1442
name = re.sub(r'[^\w.]', '', name)
1444
s = hexlify(rand_bytes(8))
1445
return '-'.join((name, compact_date(time()), s))
1449
"""Return a new tree-root file id."""
1450
return gen_file_id('TREE_ROOT')
added
removed
bzrlib/branch.py
