1
# Copyright (C) 2005 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 copy import deepcopy
19
from cStringIO import StringIO
24
from unittest import TestSuite
25
from warnings import warn
27
import xml.sax.saxutils
29
raise ImportError("We were unable to import 'xml.sax.saxutils',"
30
" most likely you have an xml.pyc or xml.pyo file"
31
" lying around in your bzrlib directory."
33
from cStringIO import StringIO
37
from bzrlib.config import TreeConfig
38
from bzrlib.decorators import needs_read_lock, needs_write_lock
39
from bzrlib.delta import compare_trees
40
import bzrlib.errors as errors
41
from bzrlib.errors import (BzrError, InvalidRevisionNumber, InvalidRevisionId,
42
NoSuchRevision, HistoryMissing, NotBranchError,
43
DivergedBranches, LockError,
44
UninitializableFormat,
46
UnlistableBranch, NoSuchFile, NotVersionedError,
48
import bzrlib.inventory as inventory
49
from bzrlib.inventory import Inventory
50
from bzrlib.lockable_files import LockableFiles
51
from bzrlib.osutils import (isdir, quotefn,
52
rename, splitpath, sha_file,
53
file_kind, abspath, normpath, pathjoin,
56
from bzrlib.textui import show_status
57
from bzrlib.trace import mutter, note
58
from bzrlib.tree import EmptyTree, RevisionTree
59
from bzrlib.repository import Repository
60
from bzrlib.revision import (Revision, is_ancestor, get_intervening_revisions)
61
from bzrlib.store import copy_all
62
from bzrlib.symbol_versioning import *
63
import bzrlib.transactions as transactions
64
from bzrlib.transport import Transport, get_transport
65
from bzrlib.tree import EmptyTree, RevisionTree
70
BZR_BRANCH_FORMAT_4 = "Bazaar-NG branch, format 0.0.4\n"
71
BZR_BRANCH_FORMAT_5 = "Bazaar-NG branch, format 5\n"
72
BZR_BRANCH_FORMAT_6 = "Bazaar-NG branch, format 6\n"
75
# TODO: Maybe include checks for common corruption of newlines, etc?
77
# TODO: Some operations like log might retrieve the same revisions
78
# repeatedly to calculate deltas. We could perhaps have a weakref
79
# cache in memory to make this faster. In general anything can be
80
# cached in memory between lock and unlock operations. .. nb thats
81
# what the transaction identity map provides
84
######################################################################
88
"""Branch holding a history of revisions.
91
Base directory/url of the branch.
93
# this is really an instance variable - FIXME move it there
97
_default_initializer = None
98
"""The default initializer for making new branches."""
100
def __init__(self, *ignored, **ignored_too):
101
raise NotImplementedError('The Branch class is abstract')
104
def open_downlevel(base):
105
"""Open a branch which may be of an old format."""
106
return Branch.open(base, _unsupported=True)
109
def open(base, _unsupported=False):
110
"""Open an existing branch, rooted at 'base' (url)
112
_unsupported is a private parameter to the Branch class.
114
t = get_transport(base)
115
mutter("trying to open %r with transport %r", base, t)
116
format = BzrBranchFormat.find_format(t)
117
if not _unsupported and not format.is_supported():
118
# see open_downlevel to open legacy branches.
119
raise errors.UnsupportedFormatError(
120
'sorry, branch format %s not supported' % format,
121
['use a different bzr version',
122
'or remove the .bzr directory'
123
' and "bzr init" again'])
124
return format.open(t)
127
def open_containing(url):
128
"""Open an existing branch which contains url.
130
This probes for a branch at url, and searches upwards from there.
132
Basically we keep looking up until we find the control directory or
133
run into the root. If there isn't one, raises NotBranchError.
134
If there is one and it is either an unrecognised format or an unsupported
135
format, UnknownFormatError or UnsupportedFormatError are raised.
136
If there is one, it is returned, along with the unused portion of url.
138
t = get_transport(url)
139
# this gets the normalised url back. I.e. '.' -> the full path.
143
format = BzrBranchFormat.find_format(t)
144
return format.open(t), t.relpath(url)
145
except NotBranchError, e:
146
mutter('not a branch in: %r %s', t.base, e)
147
new_t = t.clone('..')
148
if new_t.base == t.base:
149
# reached the root, whatever that may be
150
raise NotBranchError(path=url)
155
"""Create a new Branch at the url 'bzr'.
157
This will call the current default initializer with base
158
as the only parameter.
160
return Branch._default_initializer(safe_unicode(base))
163
@deprecated_function(zero_eight)
164
def initialize(base):
165
"""Create a new working tree and branch, rooted at 'base' (url)
167
NOTE: This will soon be deprecated in favour of creation
170
# imported here to prevent scope creep as this is going.
171
from bzrlib.workingtree import WorkingTree
172
return WorkingTree.create_standalone(safe_unicode(base)).branch
175
def get_default_initializer():
176
"""Return the initializer being used for new branches."""
177
return Branch._default_initializer
180
def set_default_initializer(initializer):
181
"""Set the initializer to be used for new branches."""
182
Branch._default_initializer = staticmethod(initializer)
184
def setup_caching(self, cache_root):
185
"""Subclasses that care about caching should override this, and set
186
up cached stores located under cache_root.
188
# seems to be unused, 2006-01-13 mbp
189
warn('%s is deprecated' % self.setup_caching)
190
self.cache_root = cache_root
193
cfg = self.tree_config()
194
return cfg.get_option(u"nickname", default=self.base.split('/')[-2])
196
def _set_nick(self, nick):
197
cfg = self.tree_config()
198
cfg.set_option(nick, "nickname")
199
assert cfg.get_option("nickname") == nick
201
nick = property(_get_nick, _set_nick)
203
def push_stores(self, branch_to):
204
"""Copy the content of this branches store to branch_to."""
205
raise NotImplementedError('push_stores is abstract')
207
def lock_write(self):
208
raise NotImplementedError('lock_write is abstract')
211
raise NotImplementedError('lock_read is abstract')
214
raise NotImplementedError('unlock is abstract')
216
def peek_lock_mode(self):
217
"""Return lock mode for the Branch: 'r', 'w' or None"""
218
raise NotImplementedError(self.peek_lock_mode)
220
def abspath(self, name):
221
"""Return absolute filename for something in the branch
223
XXX: Robert Collins 20051017 what is this used for? why is it a branch
224
method and not a tree method.
226
raise NotImplementedError('abspath is abstract')
228
def get_root_id(self):
229
"""Return the id of this branches root"""
230
raise NotImplementedError('get_root_id is abstract')
232
def print_file(self, file, revision_id):
233
"""Print `file` to stdout."""
234
raise NotImplementedError('print_file is abstract')
236
def append_revision(self, *revision_ids):
237
raise NotImplementedError('append_revision is abstract')
239
def set_revision_history(self, rev_history):
240
raise NotImplementedError('set_revision_history is abstract')
242
def revision_history(self):
243
"""Return sequence of revision hashes on to this branch."""
244
raise NotImplementedError('revision_history is abstract')
247
"""Return current revision number for this branch.
249
That is equivalent to the number of revisions committed to
252
return len(self.revision_history())
254
def last_revision(self):
255
"""Return last patch hash, or None if no history."""
256
ph = self.revision_history()
262
def missing_revisions(self, other, stop_revision=None, diverged_ok=False):
263
"""Return a list of new revisions that would perfectly fit.
265
If self and other have not diverged, return a list of the revisions
266
present in other, but missing from self.
268
>>> bzrlib.trace.silent = True
269
>>> br1 = ScratchBranch()
270
>>> br2 = ScratchBranch()
271
>>> br1.missing_revisions(br2)
273
>>> br2.working_tree().commit("lala!", rev_id="REVISION-ID-1")
274
>>> br1.missing_revisions(br2)
276
>>> br2.missing_revisions(br1)
278
>>> br1.working_tree().commit("lala!", rev_id="REVISION-ID-1")
279
>>> br1.missing_revisions(br2)
281
>>> br2.working_tree().commit("lala!", rev_id="REVISION-ID-2A")
282
>>> br1.missing_revisions(br2)
284
>>> br1.working_tree().commit("lala!", rev_id="REVISION-ID-2B")
285
>>> br1.missing_revisions(br2)
286
Traceback (most recent call last):
287
DivergedBranches: These branches have diverged. Try merge.
289
self_history = self.revision_history()
290
self_len = len(self_history)
291
other_history = other.revision_history()
292
other_len = len(other_history)
293
common_index = min(self_len, other_len) -1
294
if common_index >= 0 and \
295
self_history[common_index] != other_history[common_index]:
296
raise DivergedBranches(self, other)
298
if stop_revision is None:
299
stop_revision = other_len
301
assert isinstance(stop_revision, int)
302
if stop_revision > other_len:
303
raise bzrlib.errors.NoSuchRevision(self, stop_revision)
304
return other_history[self_len:stop_revision]
306
def update_revisions(self, other, stop_revision=None):
307
"""Pull in new perfect-fit revisions."""
308
raise NotImplementedError('update_revisions is abstract')
310
def pullable_revisions(self, other, stop_revision):
311
raise NotImplementedError('pullable_revisions is abstract')
313
def revision_id_to_revno(self, revision_id):
314
"""Given a revision id, return its revno"""
315
if revision_id is None:
317
history = self.revision_history()
319
return history.index(revision_id) + 1
321
raise bzrlib.errors.NoSuchRevision(self, revision_id)
323
def get_rev_id(self, revno, history=None):
324
"""Find the revision id of the specified revno."""
328
history = self.revision_history()
329
elif revno <= 0 or revno > len(history):
330
raise bzrlib.errors.NoSuchRevision(self, revno)
331
return history[revno - 1]
333
def working_tree(self):
334
"""Return a `Tree` for the working copy if this is a local branch."""
335
raise NotImplementedError('working_tree is abstract')
337
def pull(self, source, overwrite=False, stop_revision=None):
338
raise NotImplementedError('pull is abstract')
340
def basis_tree(self):
341
"""Return `Tree` object for last revision.
343
If there are no revisions yet, return an `EmptyTree`.
345
return self.repository.revision_tree(self.last_revision())
347
def rename_one(self, from_rel, to_rel):
350
This can change the directory or the filename or both.
352
raise NotImplementedError('rename_one is abstract')
354
def move(self, from_paths, to_name):
357
to_name must exist as a versioned directory.
359
If to_name exists and is a directory, the files are moved into
360
it, keeping their old names. If it is a directory,
362
Note that to_name is only the last component of the new name;
363
this doesn't change the directory.
365
This returns a list of (from_path, to_path) pairs for each
368
raise NotImplementedError('move is abstract')
370
def get_parent(self):
371
"""Return the parent location of the branch.
373
This is the default location for push/pull/missing. The usual
374
pattern is that the user can override it by specifying a
377
raise NotImplementedError('get_parent is abstract')
379
def get_push_location(self):
380
"""Return the None or the location to push this branch to."""
381
raise NotImplementedError('get_push_location is abstract')
383
def set_push_location(self, location):
384
"""Set a new push location for this branch."""
385
raise NotImplementedError('set_push_location is abstract')
387
def set_parent(self, url):
388
raise NotImplementedError('set_parent is abstract')
390
def check_revno(self, revno):
392
Check whether a revno corresponds to any revision.
393
Zero (the NULL revision) is considered valid.
396
self.check_real_revno(revno)
398
def check_real_revno(self, revno):
400
Check whether a revno corresponds to a real revision.
401
Zero (the NULL revision) is considered invalid
403
if revno < 1 or revno > self.revno():
404
raise InvalidRevisionNumber(revno)
406
def clone(self, to_location, revision=None, basis_branch=None, to_branch_type=None):
407
"""Copy this branch into the existing directory to_location.
409
Returns the newly created branch object.
412
If not None, only revisions up to this point will be copied.
413
The head of the new branch will be that revision. Must be a
416
to_location -- The destination directory; must either exist and be
417
empty, or not exist, in which case it is created.
420
A local branch to copy revisions from, related to this branch.
421
This is used when branching from a remote (slow) branch, and we have
422
a local branch that might contain some relevant revisions.
425
Branch type of destination branch
427
from bzrlib.workingtree import WorkingTree
428
assert isinstance(to_location, basestring)
429
if not bzrlib.osutils.lexists(to_location):
430
os.mkdir(to_location)
431
if to_branch_type is None:
432
to_branch_type = BzrBranch
433
print "FIXME use a branch format here"
434
br_to = to_branch_type.initialize(to_location)
435
mutter("copy branch from %s to %s", self, br_to)
436
if basis_branch is not None:
437
basis_branch.push_stores(br_to)
439
revision = self.last_revision()
440
br_to.update_revisions(self, stop_revision=revision)
441
br_to.set_parent(self.base)
442
WorkingTree.create(br_to, to_location).set_root_id(self.get_root_id())
446
def fileid_involved_between_revs(self, from_revid, to_revid):
447
""" This function returns the file_id(s) involved in the
448
changes between the from_revid revision and the to_revid
451
raise NotImplementedError('fileid_involved_between_revs is abstract')
453
def fileid_involved(self, last_revid=None):
454
""" This function returns the file_id(s) involved in the
455
changes up to the revision last_revid
456
If no parametr is passed, then all file_id[s] present in the
457
repository are returned
459
raise NotImplementedError('fileid_involved is abstract')
461
def fileid_involved_by_set(self, changes):
462
""" This function returns the file_id(s) involved in the
463
changes present in the set 'changes'
465
raise NotImplementedError('fileid_involved_by_set is abstract')
467
def fileid_involved_between_revs(self, from_revid, to_revid):
468
""" This function returns the file_id(s) involved in the
469
changes between the from_revid revision and the to_revid
472
raise NotImplementedError('fileid_involved_between_revs is abstract')
474
def fileid_involved(self, last_revid=None):
475
""" This function returns the file_id(s) involved in the
476
changes up to the revision last_revid
477
If no parametr is passed, then all file_id[s] present in the
478
repository are returned
480
raise NotImplementedError('fileid_involved is abstract')
482
def fileid_involved_by_set(self, changes):
483
""" This function returns the file_id(s) involved in the
484
changes present in the set 'changes'
486
raise NotImplementedError('fileid_involved_by_set is abstract')
488
class BzrBranchFormat(object):
489
"""An encapsulation of the initialization and open routines for a format.
491
Formats provide three things:
492
* An initialization routine,
496
Formats are placed in an dict by their format string for reference
497
during branch opening. Its not required that these be instances, they
498
can be classes themselves with class methods - it simply depends on
499
whether state is needed for a given format or not.
501
Once a format is deprecated, just deprecate the initialize and open
502
methods on the format class. Do not deprecate the object, as the
503
object will be created every time regardless.
507
"""The known formats."""
510
def find_format(klass, transport):
511
"""Return the format registered for URL."""
513
format_string = transport.get(".bzr/branch-format").read()
514
return klass._formats[format_string]
516
raise NotBranchError(path=transport.base)
518
raise errors.UnknownFormatError(format_string)
520
def get_format_string(self):
521
"""Return the ASCII format string that identifies this format."""
522
raise NotImplementedError(self.get_format_string)
524
def _find_modes(self, t):
525
"""Determine the appropriate modes for files and directories.
527
FIXME: When this merges into, or from storage,
528
this code becomes delgatable to a LockableFiles instance.
530
For now its cribbed and returns (dir_mode, file_mode)
534
except errors.TransportNotPossible:
538
dir_mode = st.st_mode & 07777
539
# Remove the sticky and execute bits for files
540
file_mode = dir_mode & ~07111
541
if not BzrBranch._set_dir_mode:
543
if not BzrBranch._set_file_mode:
545
return dir_mode, file_mode
547
def initialize(self, url):
548
"""Create a branch of this format at url and return an open branch."""
549
t = get_transport(url)
550
from bzrlib.weavefile import write_weave_v5
551
from bzrlib.weave import Weave
553
# Create an empty weave
555
bzrlib.weavefile.write_weave_v5(Weave(), sio)
556
empty_weave = sio.getvalue()
558
# Since we don't have a .bzr directory, inherit the
559
# mode from the root directory
560
temp_control = LockableFiles(t, '')
561
temp_control._transport.mkdir('.bzr',
562
mode=temp_control._dir_mode)
563
file_mode = temp_control._file_mode
565
mutter('created control directory in ' + t.base)
566
control = t.clone('.bzr')
567
dirs = ['revision-store', 'weaves']
568
lock_file = 'branch-lock'
569
utf8_files = [('README',
570
"This is a Bazaar-NG control directory.\n"
571
"Do not change any files in this directory.\n"),
572
('branch-format', self.get_format_string()),
573
('revision-history', ''),
576
files = [('inventory.weave', StringIO(empty_weave)),
579
# FIXME: RBC 20060125 dont peek under the covers
580
# NB: no need to escape relative paths that are url safe.
581
control.put(lock_file, StringIO(), mode=file_mode)
582
control_files = LockableFiles(control, lock_file)
583
control_files.lock_write()
584
control_files._transport.mkdir_multi(dirs,
585
mode=control_files._dir_mode)
587
for file, content in utf8_files:
588
control_files.put_utf8(file, content)
589
for file, content in files:
590
control_files.put(file, content)
592
control_files.unlock()
593
return BzrBranch(t, _format=self, _control_files=control_files)
595
def is_supported(self):
596
"""Is this format supported?
598
Supported formats can be initialized and opened.
599
Unsupported formats may not support initialization or committing or
600
some other features depending on the reason for not being supported.
604
def open(self, transport):
605
"""Fill out the data in branch for the branch at url."""
606
return BzrBranch(transport, _format=self)
609
def register_format(klass, format):
610
klass._formats[format.get_format_string()] = format
613
def unregister_format(klass, format):
614
assert klass._formats[format.get_format_string()] is format
615
del klass._formats[format.get_format_string()]
618
class BzrBranchFormat4(BzrBranchFormat):
619
"""Bzr branch format 4.
623
- TextStores for texts, inventories,revisions.
625
This format is deprecated: it indexes texts using a text it which is
626
removed in format 5; write support for this format has been removed.
629
def get_format_string(self):
630
"""See BzrBranchFormat.get_format_string()."""
631
return BZR_BRANCH_FORMAT_4
633
def initialize(self, url):
634
"""Format 4 branches cannot be created."""
635
raise UninitializableFormat(self)
637
def is_supported(self):
638
"""Format 4 is not supported.
640
It is not supported because the model changed from 4 to 5 and the
641
conversion logic is expensive - so doing it on the fly was not
647
class BzrBranchFormat5(BzrBranchFormat):
648
"""Bzr branch format 5.
651
- weaves for file texts and inventory
653
- TextStores for revisions and signatures.
656
def get_format_string(self):
657
"""See BzrBranchFormat.get_format_string()."""
658
return BZR_BRANCH_FORMAT_5
661
class BzrBranchFormat6(BzrBranchFormat):
662
"""Bzr branch format 6.
665
- weaves for file texts and inventory
666
- hash subdirectory based stores.
667
- TextStores for revisions and signatures.
670
def get_format_string(self):
671
"""See BzrBranchFormat.get_format_string()."""
672
return BZR_BRANCH_FORMAT_6
675
BzrBranchFormat.register_format(BzrBranchFormat4())
676
BzrBranchFormat.register_format(BzrBranchFormat5())
677
BzrBranchFormat.register_format(BzrBranchFormat6())
679
# TODO: jam 20060108 Create a new branch format, and as part of upgrade
680
# make sure that ancestry.weave is deleted (it is never used, but
681
# used to be created)
684
class BzrBranch(Branch):
685
"""A branch stored in the actual filesystem.
687
Note that it's "local" in the context of the filesystem; it doesn't
688
really matter if it's on an nfs/smb/afs/coda/... share, as long as
689
it's writable, and can be accessed via the normal filesystem API.
692
# We actually expect this class to be somewhat short-lived; part of its
693
# purpose is to try to isolate what bits of the branch logic are tied to
694
# filesystem access, so that in a later step, we can extricate them to
695
# a separarte ("storage") class.
696
_inventory_weave = None
698
# Map some sort of prefix into a namespace
699
# stuff like "revno:10", "revid:", etc.
700
# This should match a prefix with a function which accepts
701
REVISION_NAMESPACES = {}
703
def push_stores(self, branch_to):
704
"""See Branch.push_stores."""
705
if (not isinstance(self._branch_format, BzrBranchFormat4) or
706
self._branch_format != branch_to._branch_format):
707
from bzrlib.fetch import greedy_fetch
708
mutter("Using fetch logic to push between %s(%s) and %s(%s)",
709
self, self._branch_format, branch_to, branch_to._branch_format)
710
greedy_fetch(to_branch=branch_to, from_branch=self,
711
revision=self.last_revision())
714
# format 4 to format 4 logic only.
715
store_pairs = ((self.text_store, branch_to.text_store),
716
(self.inventory_store, branch_to.inventory_store),
717
(self.revision_store, branch_to.revision_store))
719
for from_store, to_store in store_pairs:
720
copy_all(from_store, to_store)
721
except UnlistableStore:
722
raise UnlistableBranch(from_store)
724
def __init__(self, transport, init=DEPRECATED_PARAMETER,
725
relax_version_check=DEPRECATED_PARAMETER, _format=None,
726
_control_files=None):
727
"""Create new branch object at a particular location.
729
transport -- A Transport object, defining how to access files.
731
init -- If True, create new control files in a previously
732
unversioned directory. If False, the branch must already
735
relax_version_check -- If true, the usual check for the branch
736
version is not applied. This is intended only for
737
upgrade/recovery type use; it's not guaranteed that
738
all operations will work on old format branches.
740
In the test suite, creation of new trees is tested using the
741
`ScratchBranch` class.
743
assert isinstance(transport, Transport), \
744
"%r is not a Transport" % transport
745
self._transport = transport
746
self._base = self._transport.base
747
if _control_files is None:
748
_control_files = LockableFiles(self._transport.clone(bzrlib.BZRDIR),
750
self.control_files = _control_files
751
if deprecated_passed(init):
752
warn("BzrBranch.__init__(..., init=XXX): The init parameter is "
753
"deprecated as of bzr 0.8. Please use Branch.create().",
757
# this is slower than before deprecation, oh well never mind.
759
self._initialize(transport.base)
760
self._check_format(_format)
761
if deprecated_passed(relax_version_check):
762
warn("BzrBranch.__init__(..., relax_version_check=XXX_: The "
763
"relax_version_check parameter is deprecated as of bzr 0.8. "
764
"Please use Branch.open_downlevel, or a BzrBranchFormat's "
768
if (not relax_version_check
769
and not self._branch_format.is_supported()):
770
raise errors.UnsupportedFormatError(
771
'sorry, branch format %r not supported' % fmt,
772
['use a different bzr version',
773
'or remove the .bzr directory'
774
' and "bzr init" again'])
775
self.repository = Repository(transport, self._branch_format)
779
def _initialize(base):
780
"""Create a bzr branch in the latest format."""
781
return BzrBranchFormat6().initialize(base)
784
return '%s(%r)' % (self.__class__.__name__, self.base)
789
# TODO: It might be best to do this somewhere else,
790
# but it is nice for a Branch object to automatically
791
# cache it's information.
792
# Alternatively, we could have the Transport objects cache requests
793
# See the earlier discussion about how major objects (like Branch)
794
# should never expect their __del__ function to run.
795
# XXX: cache_root seems to be unused, 2006-01-13 mbp
796
if hasattr(self, 'cache_root') and self.cache_root is not None:
798
shutil.rmtree(self.cache_root)
801
self.cache_root = None
806
base = property(_get_base, doc="The URL for the root of this branch.")
808
def _finish_transaction(self):
809
"""Exit the current transaction."""
810
return self.control_files._finish_transaction()
812
def get_transaction(self):
813
"""Return the current active transaction.
815
If no transaction is active, this returns a passthrough object
816
for which all data is immediately flushed and no caching happens.
818
# this is an explicit function so that we can do tricky stuff
819
# when the storage in rev_storage is elsewhere.
820
# we probably need to hook the two 'lock a location' and
821
# 'have a transaction' together more delicately, so that
822
# we can have two locks (branch and storage) and one transaction
823
# ... and finishing the transaction unlocks both, but unlocking
824
# does not. - RBC 20051121
825
return self.control_files.get_transaction()
827
def _set_transaction(self, transaction):
828
"""Set a new active transaction."""
829
return self.control_files._set_transaction(transaction)
831
def abspath(self, name):
832
"""See Branch.abspath."""
833
return self.control_files._transport.abspath(name)
835
def _check_format(self, format):
836
"""Identify the branch format if needed.
838
The format is stored as a reference to the format object in
839
self._branch_format for code that needs to check it later.
841
The format parameter is either None or the branch format class
842
used to open this branch.
845
format = BzrBranchFormat.find_format(self._transport)
846
self._branch_format = format
847
mutter("got branch format %s", self._branch_format)
850
def get_root_id(self):
851
"""See Branch.get_root_id."""
852
tree = self.repository.revision_tree(self.last_revision())
853
return tree.inventory.root.file_id
855
def lock_write(self):
856
# TODO: test for failed two phase locks. This is known broken.
857
self.control_files.lock_write()
858
self.repository.lock_write()
861
# TODO: test for failed two phase locks. This is known broken.
862
self.control_files.lock_read()
863
self.repository.lock_read()
866
# TODO: test for failed two phase locks. This is known broken.
867
self.repository.unlock()
868
self.control_files.unlock()
870
def peek_lock_mode(self):
871
if self.control_files._lock_count == 0:
874
return self.control_files._lock_mode
877
def print_file(self, file, revision_id):
878
"""See Branch.print_file."""
879
return self.repository.print_file(file, revision_id)
882
def append_revision(self, *revision_ids):
883
"""See Branch.append_revision."""
884
for revision_id in revision_ids:
885
mutter("add {%s} to revision-history" % revision_id)
886
rev_history = self.revision_history()
887
rev_history.extend(revision_ids)
888
self.set_revision_history(rev_history)
891
def set_revision_history(self, rev_history):
892
"""See Branch.set_revision_history."""
893
self.control_files.put_utf8(
894
'revision-history', '\n'.join(rev_history))
896
def get_revision_delta(self, revno):
897
"""Return the delta for one revision.
899
The delta is relative to its mainline predecessor, or the
900
empty tree for revision 1.
902
assert isinstance(revno, int)
903
rh = self.revision_history()
904
if not (1 <= revno <= len(rh)):
905
raise InvalidRevisionNumber(revno)
907
# revno is 1-based; list is 0-based
909
new_tree = self.repository.revision_tree(rh[revno-1])
911
old_tree = EmptyTree()
913
old_tree = self.repository.revision_tree(rh[revno-2])
914
return compare_trees(old_tree, new_tree)
917
def revision_history(self):
918
"""See Branch.revision_history."""
919
# FIXME are transactions bound to control files ? RBC 20051121
920
transaction = self.get_transaction()
921
history = transaction.map.find_revision_history()
922
if history is not None:
923
mutter("cache hit for revision-history in %s", self)
925
history = [l.rstrip('\r\n') for l in
926
self.control_files.get_utf8('revision-history').readlines()]
927
transaction.map.add_revision_history(history)
928
# this call is disabled because revision_history is
929
# not really an object yet, and the transaction is for objects.
930
# transaction.register_clean(history, precious=True)
933
def update_revisions(self, other, stop_revision=None):
934
"""See Branch.update_revisions."""
935
from bzrlib.fetch import greedy_fetch
937
if stop_revision is None:
938
stop_revision = other.last_revision()
939
### Should this be checking is_ancestor instead of revision_history?
940
if (stop_revision is not None and
941
stop_revision in self.revision_history()):
943
greedy_fetch(to_branch=self, from_branch=other,
944
revision=stop_revision)
945
pullable_revs = self.pullable_revisions(other, stop_revision)
946
if len(pullable_revs) > 0:
947
self.append_revision(*pullable_revs)
949
def pullable_revisions(self, other, stop_revision):
950
"""See Branch.pullable_revisions."""
951
other_revno = other.revision_id_to_revno(stop_revision)
953
return self.missing_revisions(other, other_revno)
954
except DivergedBranches, e:
956
pullable_revs = get_intervening_revisions(self.last_revision(),
959
assert self.last_revision() not in pullable_revs
961
except bzrlib.errors.NotAncestor:
962
if is_ancestor(self.last_revision(), stop_revision, self):
967
def basis_tree(self):
968
"""See Branch.basis_tree."""
970
revision_id = self.revision_history()[-1]
971
# FIXME: This is an abstraction violation, the basis tree
972
# here as defined is on the working tree, the method should
973
# be too. The basis tree for a branch can be different than
974
# that for a working tree. RBC 20051207
975
xml = self.working_tree().read_basis_inventory(revision_id)
976
inv = bzrlib.xml5.serializer_v5.read_inventory_from_string(xml)
977
return RevisionTree(self.repository, inv, revision_id)
978
except (IndexError, NoSuchFile, NoWorkingTree), e:
979
return self.repository.revision_tree(self.last_revision())
981
def working_tree(self):
982
"""See Branch.working_tree."""
983
from bzrlib.workingtree import WorkingTree
984
from bzrlib.transport.local import LocalTransport
985
if (self.base.find('://') != -1 or
986
not isinstance(self._transport, LocalTransport)):
987
raise NoWorkingTree(self.base)
988
return WorkingTree(self.base, branch=self)
991
def pull(self, source, overwrite=False, stop_revision=None):
992
"""See Branch.pull."""
995
old_count = len(self.revision_history())
997
self.update_revisions(source,stop_revision)
998
except DivergedBranches:
1002
self.set_revision_history(source.revision_history())
1003
new_count = len(self.revision_history())
1004
return new_count - old_count
1008
def get_parent(self):
1009
"""See Branch.get_parent."""
1011
_locs = ['parent', 'pull', 'x-pull']
1014
return self.control_files.get_utf8(l).read().strip('\n')
1019
def get_push_location(self):
1020
"""See Branch.get_push_location."""
1021
config = bzrlib.config.BranchConfig(self)
1022
push_loc = config.get_user_option('push_location')
1025
def set_push_location(self, location):
1026
"""See Branch.set_push_location."""
1027
config = bzrlib.config.LocationConfig(self.base)
1028
config.set_user_option('push_location', location)
1031
def set_parent(self, url):
1032
"""See Branch.set_parent."""
1033
# TODO: Maybe delete old location files?
1034
# URLs should never be unicode, even on the local fs,
1035
# FIXUP this and get_parent in a future branch format bump:
1036
# read and rewrite the file, and have the new format code read
1037
# using .get not .get_utf8. RBC 20060125
1038
self.control_files.put_utf8('parent', url + '\n')
1040
def tree_config(self):
1041
return TreeConfig(self)
1043
def _get_truncated_history(self, revision_id):
1044
history = self.revision_history()
1045
if revision_id is None:
1048
idx = history.index(revision_id)
1050
raise InvalidRevisionId(revision_id=revision, branch=self)
1051
return history[:idx+1]
1054
def _clone_weave(self, to_location, revision=None, basis_branch=None):
1056
from bzrlib.workingtree import WorkingTree
1057
assert isinstance(to_location, basestring)
1058
if basis_branch is not None:
1059
note("basis_branch is not supported for fast weave copy yet.")
1061
history = self._get_truncated_history(revision)
1062
if not bzrlib.osutils.lexists(to_location):
1063
os.mkdir(to_location)
1064
branch_to = Branch.initialize(to_location)
1065
mutter("copy branch from %s to %s", self, branch_to)
1067
self.repository.copy(branch_to.repository)
1069
# must be done *after* history is copied across
1070
# FIXME duplicate code with base .clone().
1071
# .. would template method be useful here? RBC 20051207
1072
branch_to.set_parent(self.base)
1073
branch_to.append_revision(*history)
1074
# FIXME: this should be in workingtree.clone
1075
WorkingTree.create(branch_to, to_location).set_root_id(self.get_root_id())
1079
def clone(self, to_location, revision=None, basis_branch=None, to_branch_type=None):
1080
print "FIXME: clone via create and fetch is probably faster when versioned file comes in."
1081
if to_branch_type is None:
1082
to_branch_type = BzrBranch
1084
if to_branch_type == BzrBranch \
1085
and self.repository.weave_store.listable() \
1086
and self.repository.revision_store.listable():
1087
return self._clone_weave(to_location, revision, basis_branch)
1089
return Branch.clone(self, to_location, revision, basis_branch, to_branch_type)
1091
def fileid_involved_between_revs(self, from_revid, to_revid):
1092
"""Find file_id(s) which are involved in the changes between revisions.
1094
This determines the set of revisions which are involved, and then
1095
finds all file ids affected by those revisions.
1097
# TODO: jam 20060119 This code assumes that w.inclusions will
1098
# always be correct. But because of the presence of ghosts
1099
# it is possible to be wrong.
1100
# One specific example from Robert Collins:
1101
# Two branches, with revisions ABC, and AD
1102
# C is a ghost merge of D.
1103
# Inclusions doesn't recognize D as an ancestor.
1104
# If D is ever merged in the future, the weave
1105
# won't be fixed, because AD never saw revision C
1106
# to cause a conflict which would force a reweave.
1107
w = self.repository.get_inventory_weave()
1108
from_set = set(w.inclusions([w.lookup(from_revid)]))
1109
to_set = set(w.inclusions([w.lookup(to_revid)]))
1110
included = to_set.difference(from_set)
1111
changed = map(w.idx_to_name, included)
1112
return self._fileid_involved_by_set(changed)
1114
def fileid_involved(self, last_revid=None):
1115
"""Find all file_ids modified in the ancestry of last_revid.
1117
:param last_revid: If None, last_revision() will be used.
1119
w = self.repository.get_inventory_weave()
1121
changed = set(w._names)
1123
included = w.inclusions([w.lookup(last_revid)])
1124
changed = map(w.idx_to_name, included)
1125
return self._fileid_involved_by_set(changed)
1127
def fileid_involved_by_set(self, changes):
1128
"""Find all file_ids modified by the set of revisions passed in.
1130
:param changes: A set() of revision ids
1132
# TODO: jam 20060119 This line does *nothing*, remove it.
1133
# or better yet, change _fileid_involved_by_set so
1134
# that it takes the inventory weave, rather than
1135
# pulling it out by itself.
1136
w = self.repository.get_inventory_weave()
1137
return self._fileid_involved_by_set(changes)
1139
def _fileid_involved_by_set(self, changes):
1140
"""Find the set of file-ids affected by the set of revisions.
1142
:param changes: A set() of revision ids.
1143
:return: A set() of file ids.
1145
This peaks at the Weave, interpreting each line, looking to
1146
see if it mentions one of the revisions. And if so, includes
1147
the file id mentioned.
1148
This expects both the Weave format, and the serialization
1149
to have a single line per file/directory, and to have
1150
fileid="" and revision="" on that line.
1152
assert (isinstance(self._branch_format, BzrBranchFormat5) or
1153
isinstance(self._branch_format, BzrBranchFormat6)), \
1154
"fileid_involved only supported for branches which store inventory as xml"
1156
w = self.repository.get_inventory_weave()
1158
for line in w._weave:
1160
# it is ugly, but it is due to the weave structure
1161
if not isinstance(line, basestring): continue
1163
start = line.find('file_id="')+9
1164
if start < 9: continue
1165
end = line.find('"', start)
1167
file_id = xml.sax.saxutils.unescape(line[start:end])
1169
# check if file_id is already present
1170
if file_id in file_ids: continue
1172
start = line.find('revision="')+10
1173
if start < 10: continue
1174
end = line.find('"', start)
1176
revision_id = xml.sax.saxutils.unescape(line[start:end])
1178
if revision_id in changes:
1179
file_ids.add(file_id)
1184
Branch.set_default_initializer(BzrBranch._initialize)
1187
class BranchTestProviderAdapter(object):
1188
"""A tool to generate a suite testing multiple branch formats at once.
1190
This is done by copying the test once for each transport and injecting
1191
the transport_server, transport_readonly_server, and branch_format
1192
classes into each copy. Each copy is also given a new id() to make it
1196
def __init__(self, transport_server, transport_readonly_server, formats):
1197
self._transport_server = transport_server
1198
self._transport_readonly_server = transport_readonly_server
1199
self._formats = formats
1201
def adapt(self, test):
1202
result = TestSuite()
1203
for format in self._formats:
1204
new_test = deepcopy(test)
1205
new_test.transport_server = self._transport_server
1206
new_test.transport_readonly_server = self._transport_readonly_server
1207
new_test.branch_format = format
1208
def make_new_test_id():
1209
new_id = "%s(%s)" % (new_test.id(), format.__class__.__name__)
1210
return lambda: new_id
1211
new_test.id = make_new_test_id()
1212
result.addTest(new_test)
1216
class ScratchBranch(BzrBranch):
1217
"""Special test class: a branch that cleans up after itself.
1219
>>> b = ScratchBranch()
1223
>>> b._transport.__del__()
1228
def __init__(self, files=[], dirs=[], transport=None):
1229
"""Make a test branch.
1231
This creates a temporary directory and runs init-tree in it.
1233
If any files are listed, they are created in the working copy.
1235
if transport is None:
1236
transport = bzrlib.transport.local.ScratchTransport()
1237
# local import for scope restriction
1238
from bzrlib.workingtree import WorkingTree
1239
WorkingTree.create_standalone(transport.base)
1240
super(ScratchBranch, self).__init__(transport)
1242
super(ScratchBranch, self).__init__(transport)
1244
# BzrBranch creates a clone to .bzr and then forgets about the
1245
# original transport. A ScratchTransport() deletes itself and
1246
# everything underneath it when it goes away, so we need to
1247
# grab a local copy to prevent that from happening
1248
self._transport = transport
1251
self._transport.mkdir(d)
1254
self._transport.put(f, 'content of %s' % f)
1258
>>> orig = ScratchBranch(files=["file1", "file2"])
1259
>>> os.listdir(orig.base)
1260
[u'.bzr', u'file1', u'file2']
1261
>>> clone = orig.clone()
1262
>>> if os.name != 'nt':
1263
... os.path.samefile(orig.base, clone.base)
1265
... orig.base == clone.base
1268
>>> os.listdir(clone.base)
1269
[u'.bzr', u'file1', u'file2']
1271
from shutil import copytree
1272
from bzrlib.osutils import mkdtemp
1275
copytree(self.base, base, symlinks=True)
1276
return ScratchBranch(
1277
transport=bzrlib.transport.local.ScratchTransport(base))
1280
######################################################################
1284
def is_control_file(filename):
1285
## FIXME: better check
1286
filename = normpath(filename)
1287
while filename != '':
1288
head, tail = os.path.split(filename)
1289
## mutter('check %r for control file' % ((head, tail),))
1290
if tail == bzrlib.BZRDIR:
1292
if filename == head:
added
removed
bzrlib/branch.py
