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
21
from warnings import warn
22
from cStringIO import StringIO
26
from bzrlib.trace import mutter, note
27
from bzrlib.osutils import (isdir, quotefn, compact_date, rand_bytes,
28
rename, splitpath, sha_file, appendpath,
30
from bzrlib.errors import (BzrError, InvalidRevisionNumber, InvalidRevisionId,
31
NoSuchRevision, HistoryMissing, NotBranchError,
32
DivergedBranches, LockError, UnlistableStore,
33
UnlistableBranch, NoSuchFile)
34
from bzrlib.textui import show_status
35
from bzrlib.revision import Revision, validate_revision_id, is_ancestor
36
from bzrlib.delta import compare_trees
37
from bzrlib.tree import EmptyTree, RevisionTree
38
from bzrlib.inventory import Inventory
39
from bzrlib.store import copy_all
40
from bzrlib.store.compressed_text import CompressedTextStore
41
from bzrlib.store.text import TextStore
42
from bzrlib.store.weave import WeaveStore
43
from bzrlib.transport import Transport, get_transport
48
BZR_BRANCH_FORMAT_4 = "Bazaar-NG branch, format 0.0.4\n"
49
BZR_BRANCH_FORMAT_5 = "Bazaar-NG branch, format 5\n"
50
## TODO: Maybe include checks for common corruption of newlines, etc?
53
# TODO: Some operations like log might retrieve the same revisions
54
# repeatedly to calculate deltas. We could perhaps have a weakref
55
# cache in memory to make this faster. In general anything can be
56
# cached in memory between lock and unlock operations.
58
def find_branch(*ignored, **ignored_too):
59
# XXX: leave this here for about one release, then remove it
60
raise NotImplementedError('find_branch() is not supported anymore, '
61
'please use one of the new branch constructors')
62
def _relpath(base, path):
63
"""Return path relative to base, or raise exception.
65
The path may be either an absolute path or a path relative to the
66
current working directory.
68
Lifted out of Branch.relpath for ease of testing.
70
os.path.commonprefix (python2.4) has a bad bug that it works just
71
on string prefixes, assuming that '/u' is a prefix of '/u2'. This
72
avoids that problem."""
73
rp = os.path.abspath(path)
77
while len(head) >= len(base):
80
head, tail = os.path.split(head)
84
raise NotBranchError("path %r is not within branch %r" % (rp, base))
89
def find_branch_root(t):
90
"""Find the branch root enclosing the transport's base.
92
t is a Transport object.
94
It is not necessary that the base of t exists.
96
Basically we keep looking up until we find the control directory or
97
run into the root. If there isn't one, raises NotBranchError.
101
if t.has(bzrlib.BZRDIR):
103
new_t = t.clone('..')
104
if new_t.base == t.base:
105
# reached the root, whatever that may be
106
raise NotBranchError('%s is not in a branch' % orig_base)
110
######################################################################
113
class Branch(object):
114
"""Branch holding a history of revisions.
117
Base directory/url of the branch.
121
def __init__(self, *ignored, **ignored_too):
122
raise NotImplementedError('The Branch class is abstract')
125
def open_downlevel(base):
126
"""Open a branch which may be of an old format.
128
Only local branches are supported."""
129
return _Branch(get_transport(base), relax_version_check=True)
133
"""Open an existing branch, rooted at 'base' (url)"""
134
t = get_transport(base)
138
def open_containing(url):
139
"""Open an existing branch which contains url.
141
This probes for a branch at url, and searches upwards from there.
143
t = get_transport(url)
144
t = find_branch_root(t)
148
def initialize(base):
149
"""Create a new branch, rooted at 'base' (url)"""
150
t = get_transport(base)
151
return _Branch(t, init=True)
153
def setup_caching(self, cache_root):
154
"""Subclasses that care about caching should override this, and set
155
up cached stores located under cache_root.
159
class _Branch(Branch):
160
"""A branch stored in the actual filesystem.
162
Note that it's "local" in the context of the filesystem; it doesn't
163
really matter if it's on an nfs/smb/afs/coda/... share, as long as
164
it's writable, and can be accessed via the normal filesystem API.
170
If _lock_mode is true, a positive count of the number of times the
174
Lock object from bzrlib.lock.
176
# We actually expect this class to be somewhat short-lived; part of its
177
# purpose is to try to isolate what bits of the branch logic are tied to
178
# filesystem access, so that in a later step, we can extricate them to
179
# a separarte ("storage") class.
183
_inventory_weave = None
185
# Map some sort of prefix into a namespace
186
# stuff like "revno:10", "revid:", etc.
187
# This should match a prefix with a function which accepts
188
REVISION_NAMESPACES = {}
190
def push_stores(self, branch_to):
191
"""Copy the content of this branches store to branch_to."""
192
if (self._branch_format != branch_to._branch_format
193
or self._branch_format != 4):
194
from bzrlib.fetch import greedy_fetch
195
mutter("falling back to fetch logic to push between %s(%s) and %s(%s)",
196
self, self._branch_format, branch_to, branch_to._branch_format)
197
greedy_fetch(to_branch=branch_to, from_branch=self,
198
revision=self.last_revision())
201
store_pairs = ((self.text_store, branch_to.text_store),
202
(self.inventory_store, branch_to.inventory_store),
203
(self.revision_store, branch_to.revision_store))
205
for from_store, to_store in store_pairs:
206
copy_all(from_store, to_store)
207
except UnlistableStore:
208
raise UnlistableBranch(from_store)
210
def __init__(self, transport, init=False,
211
relax_version_check=False):
212
"""Create new branch object at a particular location.
214
transport -- A Transport object, defining how to access files.
215
(If a string, transport.transport() will be used to
216
create a Transport object)
218
init -- If True, create new control files in a previously
219
unversioned directory. If False, the branch must already
222
relax_version_check -- If true, the usual check for the branch
223
version is not applied. This is intended only for
224
upgrade/recovery type use; it's not guaranteed that
225
all operations will work on old format branches.
227
In the test suite, creation of new trees is tested using the
228
`ScratchBranch` class.
230
assert isinstance(transport, Transport), \
231
"%r is not a Transport" % transport
232
self._transport = transport
235
self._check_format(relax_version_check)
237
def get_store(name, compressed=True):
238
relpath = self._rel_controlfilename(name)
240
store = CompressedTextStore(self._transport.clone(relpath))
242
store = TextStore(self._transport.clone(relpath))
243
if self._transport.should_cache():
244
from meta_store import CachedStore
245
cache_path = os.path.join(self.cache_root, name)
247
store = CachedStore(store, cache_path)
250
relpath = self._rel_controlfilename(name)
251
ws = WeaveStore(self._transport.clone(relpath))
252
if self._transport.should_cache():
253
ws.enable_cache = True
256
if self._branch_format == 4:
257
self.inventory_store = get_store('inventory-store')
258
self.text_store = get_store('text-store')
259
self.revision_store = get_store('revision-store')
260
elif self._branch_format == 5:
261
self.control_weaves = get_weave([])
262
self.weave_store = get_weave('weaves')
263
self.revision_store = get_store('revision-store', compressed=False)
266
return '%s(%r)' % (self.__class__.__name__, self._transport.base)
273
if self._lock_mode or self._lock:
274
# XXX: This should show something every time, and be suitable for
275
# headless operation and embedding
276
warn("branch %r was not explicitly unlocked" % self)
279
# TODO: It might be best to do this somewhere else,
280
# but it is nice for a Branch object to automatically
281
# cache it's information.
282
# Alternatively, we could have the Transport objects cache requests
283
# See the earlier discussion about how major objects (like Branch)
284
# should never expect their __del__ function to run.
285
if hasattr(self, 'cache_root') and self.cache_root is not None:
288
shutil.rmtree(self.cache_root)
291
self.cache_root = None
295
return self._transport.base
298
base = property(_get_base)
301
def lock_write(self):
302
# TODO: Upgrade locking to support using a Transport,
303
# and potentially a remote locking protocol
305
if self._lock_mode != 'w':
306
raise LockError("can't upgrade to a write lock from %r" %
308
self._lock_count += 1
310
self._lock = self._transport.lock_write(
311
self._rel_controlfilename('branch-lock'))
312
self._lock_mode = 'w'
318
assert self._lock_mode in ('r', 'w'), \
319
"invalid lock mode %r" % self._lock_mode
320
self._lock_count += 1
322
self._lock = self._transport.lock_read(
323
self._rel_controlfilename('branch-lock'))
324
self._lock_mode = 'r'
328
if not self._lock_mode:
329
raise LockError('branch %r is not locked' % (self))
331
if self._lock_count > 1:
332
self._lock_count -= 1
336
self._lock_mode = self._lock_count = None
338
def abspath(self, name):
339
"""Return absolute filename for something in the branch"""
340
return self._transport.abspath(name)
342
def relpath(self, path):
343
"""Return path relative to this branch of something inside it.
345
Raises an error if path is not in this branch."""
346
return self._transport.relpath(path)
349
def _rel_controlfilename(self, file_or_path):
350
if isinstance(file_or_path, basestring):
351
file_or_path = [file_or_path]
352
return [bzrlib.BZRDIR] + file_or_path
354
def controlfilename(self, file_or_path):
355
"""Return location relative to branch."""
356
return self._transport.abspath(self._rel_controlfilename(file_or_path))
359
def controlfile(self, file_or_path, mode='r'):
360
"""Open a control file for this branch.
362
There are two classes of file in the control directory: text
363
and binary. binary files are untranslated byte streams. Text
364
control files are stored with Unix newlines and in UTF-8, even
365
if the platform or locale defaults are different.
367
Controlfiles should almost never be opened in write mode but
368
rather should be atomically copied and replaced using atomicfile.
372
relpath = self._rel_controlfilename(file_or_path)
373
#TODO: codecs.open() buffers linewise, so it was overloaded with
374
# a much larger buffer, do we need to do the same for getreader/getwriter?
376
return self._transport.get(relpath)
378
raise BzrError("Branch.controlfile(mode='wb') is not supported, use put_controlfiles")
380
return codecs.getreader('utf-8')(self._transport.get(relpath), errors='replace')
382
raise BzrError("Branch.controlfile(mode='w') is not supported, use put_controlfiles")
384
raise BzrError("invalid controlfile mode %r" % mode)
386
def put_controlfile(self, path, f, encode=True):
387
"""Write an entry as a controlfile.
389
:param path: The path to put the file, relative to the .bzr control
391
:param f: A file-like or string object whose contents should be copied.
392
:param encode: If true, encode the contents as utf-8
394
self.put_controlfiles([(path, f)], encode=encode)
396
def put_controlfiles(self, files, encode=True):
397
"""Write several entries as controlfiles.
399
:param files: A list of [(path, file)] pairs, where the path is the directory
400
underneath the bzr control directory
401
:param encode: If true, encode the contents as utf-8
405
for path, f in files:
407
if isinstance(f, basestring):
408
f = f.encode('utf-8', 'replace')
410
f = codecs.getwriter('utf-8')(f, errors='replace')
411
path = self._rel_controlfilename(path)
412
ctrl_files.append((path, f))
413
self._transport.put_multi(ctrl_files)
415
def _make_control(self):
416
from bzrlib.inventory import Inventory
417
from bzrlib.weavefile import write_weave_v5
418
from bzrlib.weave import Weave
420
# Create an empty inventory
422
# if we want per-tree root ids then this is the place to set
423
# them; they're not needed for now and so ommitted for
425
bzrlib.xml5.serializer_v5.write_inventory(Inventory(), sio)
426
empty_inv = sio.getvalue()
428
bzrlib.weavefile.write_weave_v5(Weave(), sio)
429
empty_weave = sio.getvalue()
431
dirs = [[], 'revision-store', 'weaves']
433
"This is a Bazaar-NG control directory.\n"
434
"Do not change any files in this directory.\n"),
435
('branch-format', BZR_BRANCH_FORMAT_5),
436
('revision-history', ''),
439
('pending-merges', ''),
440
('inventory', empty_inv),
441
('inventory.weave', empty_weave),
442
('ancestry.weave', empty_weave)
444
cfn = self._rel_controlfilename
445
self._transport.mkdir_multi([cfn(d) for d in dirs])
446
self.put_controlfiles(files)
447
mutter('created control directory in ' + self._transport.base)
449
def _check_format(self, relax_version_check):
450
"""Check this branch format is supported.
452
The format level is stored, as an integer, in
453
self._branch_format for code that needs to check it later.
455
In the future, we might need different in-memory Branch
456
classes to support downlevel branches. But not yet.
459
fmt = self.controlfile('branch-format', 'r').read()
461
raise NotBranchError(self.base)
463
if fmt == BZR_BRANCH_FORMAT_5:
464
self._branch_format = 5
465
elif fmt == BZR_BRANCH_FORMAT_4:
466
self._branch_format = 4
468
if (not relax_version_check
469
and self._branch_format != 5):
470
raise BzrError('sorry, branch format %r not supported' % fmt,
471
['use a different bzr version',
472
'or remove the .bzr directory'
473
' and "bzr init" again'])
475
def get_root_id(self):
476
"""Return the id of this branches root"""
477
inv = self.read_working_inventory()
478
return inv.root.file_id
480
def set_root_id(self, file_id):
481
inv = self.read_working_inventory()
482
orig_root_id = inv.root.file_id
483
del inv._byid[inv.root.file_id]
484
inv.root.file_id = file_id
485
inv._byid[inv.root.file_id] = inv.root
488
if entry.parent_id in (None, orig_root_id):
489
entry.parent_id = inv.root.file_id
490
self._write_inventory(inv)
492
def read_working_inventory(self):
493
"""Read the working inventory."""
496
# ElementTree does its own conversion from UTF-8, so open in
498
f = self.controlfile('inventory', 'rb')
499
return bzrlib.xml5.serializer_v5.read_inventory(f)
504
def _write_inventory(self, inv):
505
"""Update the working inventory.
507
That is to say, the inventory describing changes underway, that
508
will be committed to the next revision.
510
from cStringIO import StringIO
514
bzrlib.xml5.serializer_v5.write_inventory(inv, sio)
516
# Transport handles atomicity
517
self.put_controlfile('inventory', sio)
521
mutter('wrote working inventory')
523
inventory = property(read_working_inventory, _write_inventory, None,
524
"""Inventory for the working copy.""")
526
def add(self, files, ids=None):
527
"""Make files versioned.
529
Note that the command line normally calls smart_add instead,
530
which can automatically recurse.
532
This puts the files in the Added state, so that they will be
533
recorded by the next commit.
536
List of paths to add, relative to the base of the tree.
539
If set, use these instead of automatically generated ids.
540
Must be the same length as the list of files, but may
541
contain None for ids that are to be autogenerated.
543
TODO: Perhaps have an option to add the ids even if the files do
546
TODO: Perhaps yield the ids and paths as they're added.
548
# TODO: Re-adding a file that is removed in the working copy
549
# should probably put it back with the previous ID.
550
if isinstance(files, basestring):
551
assert(ids is None or isinstance(ids, basestring))
557
ids = [None] * len(files)
559
assert(len(ids) == len(files))
563
inv = self.read_working_inventory()
564
for f,file_id in zip(files, ids):
565
if is_control_file(f):
566
raise BzrError("cannot add control file %s" % quotefn(f))
571
raise BzrError("cannot add top-level %r" % f)
573
fullpath = os.path.normpath(self.abspath(f))
576
kind = file_kind(fullpath)
578
# maybe something better?
579
raise BzrError('cannot add: not a regular file, symlink or directory: %s' % quotefn(f))
581
if kind not in ('file', 'directory', 'symlink'):
582
raise BzrError('cannot add: not a regular file, symlink or directory: %s' % quotefn(f))
585
file_id = gen_file_id(f)
586
inv.add_path(f, kind=kind, file_id=file_id)
588
mutter("add file %s file_id:{%s} kind=%r" % (f, file_id, kind))
590
self._write_inventory(inv)
595
def print_file(self, file, revno):
596
"""Print `file` to stdout."""
599
tree = self.revision_tree(self.get_rev_id(revno))
600
# use inventory as it was in that revision
601
file_id = tree.inventory.path2id(file)
603
raise BzrError("%r is not present in revision %s" % (file, revno))
604
tree.print_file(file_id)
609
def remove(self, files, verbose=False):
610
"""Mark nominated files for removal from the inventory.
612
This does not remove their text. This does not run on
614
TODO: Refuse to remove modified files unless --force is given?
616
TODO: Do something useful with directories.
618
TODO: Should this remove the text or not? Tough call; not
619
removing may be useful and the user can just use use rm, and
620
is the opposite of add. Removing it is consistent with most
621
other tools. Maybe an option.
623
## TODO: Normalize names
624
## TODO: Remove nested loops; better scalability
625
if isinstance(files, basestring):
631
tree = self.working_tree()
634
# do this before any modifications
638
raise BzrError("cannot remove unversioned file %s" % quotefn(f))
639
mutter("remove inventory entry %s {%s}" % (quotefn(f), fid))
641
# having remove it, it must be either ignored or unknown
642
if tree.is_ignored(f):
646
show_status(new_status, inv[fid].kind, quotefn(f))
649
self._write_inventory(inv)
653
# FIXME: this doesn't need to be a branch method
654
def set_inventory(self, new_inventory_list):
655
from bzrlib.inventory import Inventory, InventoryEntry
656
inv = Inventory(self.get_root_id())
657
for path, file_id, parent, kind in new_inventory_list:
658
name = os.path.basename(path)
661
inv.add(InventoryEntry(file_id, name, kind, parent))
662
self._write_inventory(inv)
665
"""Return all unknown files.
667
These are files in the working directory that are not versioned or
668
control files or ignored.
670
>>> b = ScratchBranch(files=['foo', 'foo~'])
671
>>> list(b.unknowns())
674
>>> list(b.unknowns())
677
>>> list(b.unknowns())
680
return self.working_tree().unknowns()
683
def append_revision(self, *revision_ids):
684
for revision_id in revision_ids:
685
mutter("add {%s} to revision-history" % revision_id)
688
rev_history = self.revision_history()
689
rev_history.extend(revision_ids)
690
self.put_controlfile('revision-history', '\n'.join(rev_history))
694
def has_revision(self, revision_id):
695
"""True if this branch has a copy of the revision.
697
This does not necessarily imply the revision is merge
698
or on the mainline."""
699
return (revision_id is None
700
or revision_id in self.revision_store)
702
def get_revision_xml_file(self, revision_id):
703
"""Return XML file object for revision object."""
704
if not revision_id or not isinstance(revision_id, basestring):
705
raise InvalidRevisionId(revision_id)
710
return self.revision_store[revision_id]
711
except (IndexError, KeyError):
712
raise bzrlib.errors.NoSuchRevision(self, revision_id)
717
get_revision_xml = get_revision_xml_file
719
def get_revision_xml(self, revision_id):
720
return self.get_revision_xml_file(revision_id).read()
723
def get_revision(self, revision_id):
724
"""Return the Revision object for a named revision"""
725
xml_file = self.get_revision_xml_file(revision_id)
728
r = bzrlib.xml5.serializer_v5.read_revision(xml_file)
729
except SyntaxError, e:
730
raise bzrlib.errors.BzrError('failed to unpack revision_xml',
734
assert r.revision_id == revision_id
737
def get_revision_delta(self, revno):
738
"""Return the delta for one revision.
740
The delta is relative to its mainline predecessor, or the
741
empty tree for revision 1.
743
assert isinstance(revno, int)
744
rh = self.revision_history()
745
if not (1 <= revno <= len(rh)):
746
raise InvalidRevisionNumber(revno)
748
# revno is 1-based; list is 0-based
750
new_tree = self.revision_tree(rh[revno-1])
752
old_tree = EmptyTree()
754
old_tree = self.revision_tree(rh[revno-2])
756
return compare_trees(old_tree, new_tree)
758
def get_revision_sha1(self, revision_id):
759
"""Hash the stored value of a revision, and return it."""
760
# In the future, revision entries will be signed. At that
761
# point, it is probably best *not* to include the signature
762
# in the revision hash. Because that lets you re-sign
763
# the revision, (add signatures/remove signatures) and still
764
# have all hash pointers stay consistent.
765
# But for now, just hash the contents.
766
return bzrlib.osutils.sha_file(self.get_revision_xml_file(revision_id))
768
def _get_ancestry_weave(self):
769
return self.control_weaves.get_weave('ancestry')
771
def get_ancestry(self, revision_id):
772
"""Return a list of revision-ids integrated by a revision.
775
if revision_id is None:
777
w = self._get_ancestry_weave()
778
return [None] + [l[:-1] for l in w.get_iter(w.lookup(revision_id))]
780
def get_inventory_weave(self):
781
return self.control_weaves.get_weave('inventory')
783
def get_inventory(self, revision_id):
784
"""Get Inventory object by hash."""
785
xml = self.get_inventory_xml(revision_id)
786
return bzrlib.xml5.serializer_v5.read_inventory_from_string(xml)
788
def get_inventory_xml(self, revision_id):
789
"""Get inventory XML as a file object."""
791
assert isinstance(revision_id, basestring), type(revision_id)
792
iw = self.get_inventory_weave()
793
return iw.get_text(iw.lookup(revision_id))
795
raise bzrlib.errors.HistoryMissing(self, 'inventory', revision_id)
797
def get_inventory_sha1(self, revision_id):
798
"""Return the sha1 hash of the inventory entry
800
return self.get_revision(revision_id).inventory_sha1
802
def get_revision_inventory(self, revision_id):
803
"""Return inventory of a past revision."""
804
# TODO: Unify this with get_inventory()
805
# bzr 0.0.6 and later imposes the constraint that the inventory_id
806
# must be the same as its revision, so this is trivial.
807
if revision_id == None:
808
return Inventory(self.get_root_id())
810
return self.get_inventory(revision_id)
812
def revision_history(self):
813
"""Return sequence of revision hashes on to this branch."""
816
return [l.rstrip('\r\n') for l in
817
self.controlfile('revision-history', 'r').readlines()]
821
def common_ancestor(self, other, self_revno=None, other_revno=None):
823
>>> from bzrlib.commit import commit
824
>>> sb = ScratchBranch(files=['foo', 'foo~'])
825
>>> sb.common_ancestor(sb) == (None, None)
827
>>> commit(sb, "Committing first revision", verbose=False)
828
>>> sb.common_ancestor(sb)[0]
830
>>> clone = sb.clone()
831
>>> commit(sb, "Committing second revision", verbose=False)
832
>>> sb.common_ancestor(sb)[0]
834
>>> sb.common_ancestor(clone)[0]
836
>>> commit(clone, "Committing divergent second revision",
838
>>> sb.common_ancestor(clone)[0]
840
>>> sb.common_ancestor(clone) == clone.common_ancestor(sb)
842
>>> sb.common_ancestor(sb) != clone.common_ancestor(clone)
844
>>> clone2 = sb.clone()
845
>>> sb.common_ancestor(clone2)[0]
847
>>> sb.common_ancestor(clone2, self_revno=1)[0]
849
>>> sb.common_ancestor(clone2, other_revno=1)[0]
852
my_history = self.revision_history()
853
other_history = other.revision_history()
854
if self_revno is None:
855
self_revno = len(my_history)
856
if other_revno is None:
857
other_revno = len(other_history)
858
indices = range(min((self_revno, other_revno)))
861
if my_history[r] == other_history[r]:
862
return r+1, my_history[r]
867
"""Return current revision number for this branch.
869
That is equivalent to the number of revisions committed to
872
return len(self.revision_history())
875
def last_revision(self):
876
"""Return last patch hash, or None if no history.
878
ph = self.revision_history()
885
def missing_revisions(self, other, stop_revision=None, diverged_ok=False):
886
"""Return a list of new revisions that would perfectly fit.
888
If self and other have not diverged, return a list of the revisions
889
present in other, but missing from self.
891
>>> from bzrlib.commit import commit
892
>>> bzrlib.trace.silent = True
893
>>> br1 = ScratchBranch()
894
>>> br2 = ScratchBranch()
895
>>> br1.missing_revisions(br2)
897
>>> commit(br2, "lala!", rev_id="REVISION-ID-1")
898
>>> br1.missing_revisions(br2)
900
>>> br2.missing_revisions(br1)
902
>>> commit(br1, "lala!", rev_id="REVISION-ID-1")
903
>>> br1.missing_revisions(br2)
905
>>> commit(br2, "lala!", rev_id="REVISION-ID-2A")
906
>>> br1.missing_revisions(br2)
908
>>> commit(br1, "lala!", rev_id="REVISION-ID-2B")
909
>>> br1.missing_revisions(br2)
910
Traceback (most recent call last):
911
DivergedBranches: These branches have diverged.
913
# FIXME: If the branches have diverged, but the latest
914
# revision in this branch is completely merged into the other,
915
# then we should still be able to pull.
916
self_history = self.revision_history()
917
self_len = len(self_history)
918
other_history = other.revision_history()
919
other_len = len(other_history)
920
common_index = min(self_len, other_len) -1
921
if common_index >= 0 and \
922
self_history[common_index] != other_history[common_index]:
923
raise DivergedBranches(self, other)
925
if stop_revision is None:
926
stop_revision = other_len
928
assert isinstance(stop_revision, int)
929
if stop_revision > other_len:
930
raise bzrlib.errors.NoSuchRevision(self, stop_revision)
931
return other_history[self_len:stop_revision]
933
def update_revisions(self, other, stop_revision=None):
934
"""Pull in new perfect-fit revisions."""
935
from bzrlib.fetch import greedy_fetch
936
from bzrlib.revision import get_intervening_revisions
937
if stop_revision is None:
938
stop_revision = other.last_revision()
939
greedy_fetch(to_branch=self, from_branch=other,
940
revision=stop_revision)
941
pullable_revs = self.missing_revisions(
942
other, other.revision_id_to_revno(stop_revision))
944
greedy_fetch(to_branch=self,
946
revision=pullable_revs[-1])
947
self.append_revision(*pullable_revs)
950
def commit(self, *args, **kw):
951
from bzrlib.commit import Commit
952
Commit().commit(self, *args, **kw)
954
def revision_id_to_revno(self, revision_id):
955
"""Given a revision id, return its revno"""
956
if revision_id is None:
958
history = self.revision_history()
960
return history.index(revision_id) + 1
962
raise bzrlib.errors.NoSuchRevision(self, revision_id)
964
def get_rev_id(self, revno, history=None):
965
"""Find the revision id of the specified revno."""
969
history = self.revision_history()
970
elif revno <= 0 or revno > len(history):
971
raise bzrlib.errors.NoSuchRevision(self, revno)
972
return history[revno - 1]
974
def revision_tree(self, revision_id):
975
"""Return Tree for a revision on this branch.
977
`revision_id` may be None for the null revision, in which case
978
an `EmptyTree` is returned."""
979
# TODO: refactor this to use an existing revision object
980
# so we don't need to read it in twice.
981
if revision_id == None:
984
inv = self.get_revision_inventory(revision_id)
985
return RevisionTree(self.weave_store, inv, revision_id)
988
def working_tree(self):
989
"""Return a `Tree` for the working copy."""
990
from bzrlib.workingtree import WorkingTree
991
# TODO: In the future, WorkingTree should utilize Transport
992
return WorkingTree(self._transport.base, self.read_working_inventory())
995
def basis_tree(self):
996
"""Return `Tree` object for last revision.
998
If there are no revisions yet, return an `EmptyTree`.
1000
return self.revision_tree(self.last_revision())
1003
def rename_one(self, from_rel, to_rel):
1006
This can change the directory or the filename or both.
1010
tree = self.working_tree()
1011
inv = tree.inventory
1012
if not tree.has_filename(from_rel):
1013
raise BzrError("can't rename: old working file %r does not exist" % from_rel)
1014
if tree.has_filename(to_rel):
1015
raise BzrError("can't rename: new working file %r already exists" % to_rel)
1017
file_id = inv.path2id(from_rel)
1019
raise BzrError("can't rename: old name %r is not versioned" % from_rel)
1021
if inv.path2id(to_rel):
1022
raise BzrError("can't rename: new name %r is already versioned" % to_rel)
1024
to_dir, to_tail = os.path.split(to_rel)
1025
to_dir_id = inv.path2id(to_dir)
1026
if to_dir_id == None and to_dir != '':
1027
raise BzrError("can't determine destination directory id for %r" % to_dir)
1029
mutter("rename_one:")
1030
mutter(" file_id {%s}" % file_id)
1031
mutter(" from_rel %r" % from_rel)
1032
mutter(" to_rel %r" % to_rel)
1033
mutter(" to_dir %r" % to_dir)
1034
mutter(" to_dir_id {%s}" % to_dir_id)
1036
inv.rename(file_id, to_dir_id, to_tail)
1038
from_abs = self.abspath(from_rel)
1039
to_abs = self.abspath(to_rel)
1041
rename(from_abs, to_abs)
1043
raise BzrError("failed to rename %r to %r: %s"
1044
% (from_abs, to_abs, e[1]),
1045
["rename rolled back"])
1047
self._write_inventory(inv)
1052
def move(self, from_paths, to_name):
1055
to_name must exist as a versioned directory.
1057
If to_name exists and is a directory, the files are moved into
1058
it, keeping their old names. If it is a directory,
1060
Note that to_name is only the last component of the new name;
1061
this doesn't change the directory.
1063
This returns a list of (from_path, to_path) pairs for each
1064
entry that is moved.
1069
## TODO: Option to move IDs only
1070
assert not isinstance(from_paths, basestring)
1071
tree = self.working_tree()
1072
inv = tree.inventory
1073
to_abs = self.abspath(to_name)
1074
if not isdir(to_abs):
1075
raise BzrError("destination %r is not a directory" % to_abs)
1076
if not tree.has_filename(to_name):
1077
raise BzrError("destination %r not in working directory" % to_abs)
1078
to_dir_id = inv.path2id(to_name)
1079
if to_dir_id == None and to_name != '':
1080
raise BzrError("destination %r is not a versioned directory" % to_name)
1081
to_dir_ie = inv[to_dir_id]
1082
if to_dir_ie.kind not in ('directory', 'root_directory'):
1083
raise BzrError("destination %r is not a directory" % to_abs)
1085
to_idpath = inv.get_idpath(to_dir_id)
1087
for f in from_paths:
1088
if not tree.has_filename(f):
1089
raise BzrError("%r does not exist in working tree" % f)
1090
f_id = inv.path2id(f)
1092
raise BzrError("%r is not versioned" % f)
1093
name_tail = splitpath(f)[-1]
1094
dest_path = appendpath(to_name, name_tail)
1095
if tree.has_filename(dest_path):
1096
raise BzrError("destination %r already exists" % dest_path)
1097
if f_id in to_idpath:
1098
raise BzrError("can't move %r to a subdirectory of itself" % f)
1100
# OK, so there's a race here, it's possible that someone will
1101
# create a file in this interval and then the rename might be
1102
# left half-done. But we should have caught most problems.
1104
for f in from_paths:
1105
name_tail = splitpath(f)[-1]
1106
dest_path = appendpath(to_name, name_tail)
1107
result.append((f, dest_path))
1108
inv.rename(inv.path2id(f), to_dir_id, name_tail)
1110
rename(self.abspath(f), self.abspath(dest_path))
1112
raise BzrError("failed to rename %r to %r: %s" % (f, dest_path, e[1]),
1113
["rename rolled back"])
1115
self._write_inventory(inv)
1122
def revert(self, filenames, old_tree=None, backups=True):
1123
"""Restore selected files to the versions from a previous tree.
1126
If true (default) backups are made of files before
1129
from bzrlib.errors import NotVersionedError, BzrError
1130
from bzrlib.atomicfile import AtomicFile
1131
from bzrlib.osutils import backup_file
1133
inv = self.read_working_inventory()
1134
if old_tree is None:
1135
old_tree = self.basis_tree()
1136
old_inv = old_tree.inventory
1139
for fn in filenames:
1140
file_id = inv.path2id(fn)
1142
raise NotVersionedError("not a versioned file", fn)
1143
if not old_inv.has_id(file_id):
1144
raise BzrError("file not present in old tree", fn, file_id)
1145
nids.append((fn, file_id))
1147
# TODO: Rename back if it was previously at a different location
1149
# TODO: If given a directory, restore the entire contents from
1150
# the previous version.
1152
# TODO: Make a backup to a temporary file.
1154
# TODO: If the file previously didn't exist, delete it?
1155
for fn, file_id in nids:
1158
f = AtomicFile(fn, 'wb')
1160
f.write(old_tree.get_file(file_id).read())
1166
def pending_merges(self):
1167
"""Return a list of pending merges.
1169
These are revisions that have been merged into the working
1170
directory but not yet committed.
1172
cfn = self._rel_controlfilename('pending-merges')
1173
if not self._transport.has(cfn):
1176
for l in self.controlfile('pending-merges', 'r').readlines():
1177
p.append(l.rstrip('\n'))
1181
def add_pending_merge(self, *revision_ids):
1182
# TODO: Perhaps should check at this point that the
1183
# history of the revision is actually present?
1184
for rev_id in revision_ids:
1185
validate_revision_id(rev_id)
1187
p = self.pending_merges()
1189
for rev_id in revision_ids:
1195
self.set_pending_merges(p)
1197
def set_pending_merges(self, rev_list):
1200
self.put_controlfile('pending-merges', '\n'.join(rev_list))
1205
def get_parent(self):
1206
"""Return the parent location of the branch.
1208
This is the default location for push/pull/missing. The usual
1209
pattern is that the user can override it by specifying a
1213
_locs = ['parent', 'pull', 'x-pull']
1216
return self.controlfile(l, 'r').read().strip('\n')
1218
if e.errno != errno.ENOENT:
1223
def set_parent(self, url):
1224
# TODO: Maybe delete old location files?
1225
from bzrlib.atomicfile import AtomicFile
1228
f = AtomicFile(self.controlfilename('parent'))
1237
def check_revno(self, revno):
1239
Check whether a revno corresponds to any revision.
1240
Zero (the NULL revision) is considered valid.
1243
self.check_real_revno(revno)
1245
def check_real_revno(self, revno):
1247
Check whether a revno corresponds to a real revision.
1248
Zero (the NULL revision) is considered invalid
1250
if revno < 1 or revno > self.revno():
1251
raise InvalidRevisionNumber(revno)
1257
class ScratchBranch(_Branch):
1258
"""Special test class: a branch that cleans up after itself.
1260
>>> b = ScratchBranch()
1268
def __init__(self, files=[], dirs=[], base=None):
1269
"""Make a test branch.
1271
This creates a temporary directory and runs init-tree in it.
1273
If any files are listed, they are created in the working copy.
1275
from tempfile import mkdtemp
1280
if isinstance(base, basestring):
1281
base = get_transport(base)
1282
_Branch.__init__(self, base, init=init)
1284
self._transport.mkdir(d)
1287
self._transport.put(f, 'content of %s' % f)
1292
>>> orig = ScratchBranch(files=["file1", "file2"])
1293
>>> clone = orig.clone()
1294
>>> if os.name != 'nt':
1295
... os.path.samefile(orig.base, clone.base)
1297
... orig.base == clone.base
1300
>>> os.path.isfile(os.path.join(clone.base, "file1"))
1303
from shutil import copytree
1304
from tempfile import mkdtemp
1307
copytree(self.base, base, symlinks=True)
1308
return ScratchBranch(base=base)
1314
"""Destroy the test branch, removing the scratch directory."""
1315
from shutil import rmtree
1318
mutter("delete ScratchBranch %s" % self.base)
1321
# Work around for shutil.rmtree failing on Windows when
1322
# readonly files are encountered
1323
mutter("hit exception in destroying ScratchBranch: %s" % e)
1324
for root, dirs, files in os.walk(self.base, topdown=False):
1326
os.chmod(os.path.join(root, name), 0700)
1328
self._transport = None
1332
######################################################################
1336
def is_control_file(filename):
1337
## FIXME: better check
1338
filename = os.path.normpath(filename)
1339
while filename != '':
1340
head, tail = os.path.split(filename)
1341
## mutter('check %r for control file' % ((head, tail), ))
1342
if tail == bzrlib.BZRDIR:
1344
if filename == head:
1351
def gen_file_id(name):
1352
"""Return new file id.
1354
This should probably generate proper UUIDs, but for the moment we
1355
cope with just randomness because running uuidgen every time is
1358
from binascii import hexlify
1359
from time import time
1361
# get last component
1362
idx = name.rfind('/')
1364
name = name[idx+1 : ]
1365
idx = name.rfind('\\')
1367
name = name[idx+1 : ]
1369
# make it not a hidden file
1370
name = name.lstrip('.')
1372
# remove any wierd characters; we don't escape them but rather
1373
# just pull them out
1374
name = re.sub(r'[^\w.]', '', name)
1376
s = hexlify(rand_bytes(8))
1377
return '-'.join((name, compact_date(time()), s))
1381
"""Return a new tree-root file id."""
1382
return gen_file_id('TREE_ROOT')