21
from warnings import warn
22
from cStringIO import StringIO
26
from bzrlib.inventory import InventoryEntry
27
import bzrlib.inventory as inventory
22
28
from bzrlib.trace import mutter, note
23
from bzrlib.osutils import isdir, quotefn, compact_date, rand_bytes, \
25
sha_file, appendpath, file_kind
27
from bzrlib.errors import BzrError, InvalidRevisionNumber, InvalidRevisionId
29
from bzrlib.osutils import (isdir, quotefn, compact_date, rand_bytes,
30
rename, splitpath, sha_file, appendpath,
32
from bzrlib.errors import (BzrError, InvalidRevisionNumber, InvalidRevisionId,
33
NoSuchRevision, HistoryMissing, NotBranchError,
34
DivergedBranches, LockError, UnlistableStore,
35
UnlistableBranch, NoSuchFile)
29
36
from bzrlib.textui import show_status
30
37
from bzrlib.revision import Revision
31
from bzrlib.xml import unpack_xml
32
38
from bzrlib.delta import compare_trees
33
39
from bzrlib.tree import EmptyTree, RevisionTree
40
from bzrlib.inventory import Inventory
41
from bzrlib.store import copy_all
42
from bzrlib.store.compressed_text import CompressedTextStore
43
from bzrlib.store.text import TextStore
44
from bzrlib.store.weave import WeaveStore
45
from bzrlib.transport import Transport, get_transport
37
BZR_BRANCH_FORMAT = "Bazaar-NG branch, format 0.0.4\n"
50
BZR_BRANCH_FORMAT_4 = "Bazaar-NG branch, format 0.0.4\n"
51
BZR_BRANCH_FORMAT_5 = "Bazaar-NG branch, format 5\n"
38
52
## TODO: Maybe include checks for common corruption of newlines, etc?
41
55
# TODO: Some operations like log might retrieve the same revisions
42
56
# repeatedly to calculate deltas. We could perhaps have a weakref
43
# cache in memory to make this faster.
45
# TODO: please move the revision-string syntax stuff out of the branch
46
# object; it's clutter
49
def find_branch(f, **args):
50
if f and (f.startswith('http://') or f.startswith('https://')):
52
return remotebranch.RemoteBranch(f, **args)
54
return Branch(f, **args)
57
def find_cached_branch(f, cache_root, **args):
58
from remotebranch import RemoteBranch
59
br = find_branch(f, **args)
60
def cacheify(br, store_name):
61
from meta_store import CachedStore
62
cache_path = os.path.join(cache_root, store_name)
64
new_store = CachedStore(getattr(br, store_name), cache_path)
65
setattr(br, store_name, new_store)
67
if isinstance(br, RemoteBranch):
68
cacheify(br, 'inventory_store')
69
cacheify(br, 'text_store')
70
cacheify(br, 'revision_store')
57
# cache in memory to make this faster. In general anything can be
58
# cached in memory between lock and unlock operations.
60
def find_branch(*ignored, **ignored_too):
61
# XXX: leave this here for about one release, then remove it
62
raise NotImplementedError('find_branch() is not supported anymore, '
63
'please use one of the new branch constructors')
74
64
def _relpath(base, path):
75
65
"""Return path relative to base, or raise exception.
160
178
Lock object from bzrlib.lock.
180
# We actually expect this class to be somewhat short-lived; part of its
181
# purpose is to try to isolate what bits of the branch logic are tied to
182
# filesystem access, so that in a later step, we can extricate them to
183
# a separarte ("storage") class.
163
184
_lock_mode = None
164
185
_lock_count = None
187
_inventory_weave = None
167
189
# Map some sort of prefix into a namespace
168
190
# stuff like "revno:10", "revid:", etc.
169
191
# This should match a prefix with a function which accepts
170
192
REVISION_NAMESPACES = {}
172
def __init__(self, base, init=False, find_root=True):
194
def push_stores(self, branch_to):
195
"""Copy the content of this branches store to branch_to."""
196
if (self._branch_format != branch_to._branch_format
197
or self._branch_format != 4):
198
from bzrlib.fetch import greedy_fetch
199
mutter("falling back to fetch logic to push between %s(%s) and %s(%s)",
200
self, self._branch_format, branch_to, branch_to._branch_format)
201
greedy_fetch(to_branch=branch_to, from_branch=self,
202
revision=self.last_revision())
205
store_pairs = ((self.text_store, branch_to.text_store),
206
(self.inventory_store, branch_to.inventory_store),
207
(self.revision_store, branch_to.revision_store))
209
for from_store, to_store in store_pairs:
210
copy_all(from_store, to_store)
211
except UnlistableStore:
212
raise UnlistableBranch(from_store)
214
def __init__(self, transport, init=False,
215
relax_version_check=False):
173
216
"""Create new branch object at a particular location.
175
base -- Base directory for the branch.
218
transport -- A Transport object, defining how to access files.
219
(If a string, transport.transport() will be used to
220
create a Transport object)
177
222
init -- If True, create new control files in a previously
178
223
unversioned directory. If False, the branch must already
181
find_root -- If true and init is false, find the root of the
182
existing branch containing base.
226
relax_version_check -- If true, the usual check for the branch
227
version is not applied. This is intended only for
228
upgrade/recovery type use; it's not guaranteed that
229
all operations will work on old format branches.
184
231
In the test suite, creation of new trees is tested using the
185
232
`ScratchBranch` class.
187
from bzrlib.store import ImmutableStore
234
assert isinstance(transport, Transport), \
235
"%r is not a Transport" % transport
236
self._transport = transport
189
self.base = os.path.realpath(base)
190
238
self._make_control()
192
self.base = find_branch_root(base)
194
self.base = os.path.realpath(base)
195
if not isdir(self.controlfilename('.')):
196
from errors import NotBranchError
197
raise NotBranchError("not a bzr branch: %s" % quotefn(base),
198
['use "bzr init" to initialize a new working tree',
199
'current bzr can only operate from top-of-tree'])
202
self.text_store = ImmutableStore(self.controlfilename('text-store'))
203
self.revision_store = ImmutableStore(self.controlfilename('revision-store'))
204
self.inventory_store = ImmutableStore(self.controlfilename('inventory-store'))
239
self._check_format(relax_version_check)
241
def get_store(name, compressed=True):
242
# FIXME: This approach of assuming stores are all entirely compressed
243
# or entirely uncompressed is tidy, but breaks upgrade from
244
# some existing branches where there's a mixture; we probably
245
# still want the option to look for both.
246
relpath = self._rel_controlfilename(name)
248
store = CompressedTextStore(self._transport.clone(relpath))
250
store = TextStore(self._transport.clone(relpath))
251
#if self._transport.should_cache():
252
# cache_path = os.path.join(self.cache_root, name)
253
# os.mkdir(cache_path)
254
# store = bzrlib.store.CachedStore(store, cache_path)
257
relpath = self._rel_controlfilename(name)
258
ws = WeaveStore(self._transport.clone(relpath))
259
if self._transport.should_cache():
260
ws.enable_cache = True
263
if self._branch_format == 4:
264
self.inventory_store = get_store('inventory-store')
265
self.text_store = get_store('text-store')
266
self.revision_store = get_store('revision-store')
267
elif self._branch_format == 5:
268
self.control_weaves = get_weave([])
269
self.weave_store = get_weave('weaves')
270
self.revision_store = get_store('revision-store', compressed=False)
207
272
def __str__(self):
208
return '%s(%r)' % (self.__class__.__name__, self.base)
273
return '%s(%r)' % (self.__class__.__name__, self._transport.base)
211
276
__repr__ = __str__
285
374
Controlfiles should almost never be opened in write mode but
286
375
rather should be atomically copied and replaced using atomicfile.
289
fn = self.controlfilename(file_or_path)
291
if mode == 'rb' or mode == 'wb':
292
return file(fn, mode)
293
elif mode == 'r' or mode == 'w':
294
# open in binary mode anyhow so there's no newline translation;
295
# codecs uses line buffering by default; don't want that.
297
return codecs.open(fn, mode + 'b', 'utf-8',
379
relpath = self._rel_controlfilename(file_or_path)
380
#TODO: codecs.open() buffers linewise, so it was overloaded with
381
# a much larger buffer, do we need to do the same for getreader/getwriter?
383
return self._transport.get(relpath)
385
raise BzrError("Branch.controlfile(mode='wb') is not supported, use put_controlfiles")
387
return codecs.getreader('utf-8')(self._transport.get(relpath), errors='replace')
389
raise BzrError("Branch.controlfile(mode='w') is not supported, use put_controlfiles")
300
391
raise BzrError("invalid controlfile mode %r" % mode)
393
def put_controlfile(self, path, f, encode=True):
394
"""Write an entry as a controlfile.
396
:param path: The path to put the file, relative to the .bzr control
398
:param f: A file-like or string object whose contents should be copied.
399
:param encode: If true, encode the contents as utf-8
401
self.put_controlfiles([(path, f)], encode=encode)
403
def put_controlfiles(self, files, encode=True):
404
"""Write several entries as controlfiles.
406
:param files: A list of [(path, file)] pairs, where the path is the directory
407
underneath the bzr control directory
408
:param encode: If true, encode the contents as utf-8
412
for path, f in files:
414
if isinstance(f, basestring):
415
f = f.encode('utf-8', 'replace')
417
f = codecs.getwriter('utf-8')(f, errors='replace')
418
path = self._rel_controlfilename(path)
419
ctrl_files.append((path, f))
420
self._transport.put_multi(ctrl_files)
302
422
def _make_control(self):
303
423
from bzrlib.inventory import Inventory
304
from bzrlib.xml import pack_xml
424
from bzrlib.weavefile import write_weave_v5
425
from bzrlib.weave import Weave
306
os.mkdir(self.controlfilename([]))
307
self.controlfile('README', 'w').write(
308
"This is a Bazaar-NG control directory.\n"
309
"Do not change any files in this directory.\n")
310
self.controlfile('branch-format', 'w').write(BZR_BRANCH_FORMAT)
311
for d in ('text-store', 'inventory-store', 'revision-store'):
312
os.mkdir(self.controlfilename(d))
313
for f in ('revision-history', 'merged-patches',
314
'pending-merged-patches', 'branch-name',
317
self.controlfile(f, 'w').write('')
318
mutter('created control directory in ' + self.base)
427
# Create an empty inventory
320
429
# if we want per-tree root ids then this is the place to set
321
430
# them; they're not needed for now and so ommitted for
323
pack_xml(Inventory(), self.controlfile('inventory','w'))
325
def _check_format(self):
432
bzrlib.xml5.serializer_v5.write_inventory(Inventory(), sio)
433
empty_inv = sio.getvalue()
435
bzrlib.weavefile.write_weave_v5(Weave(), sio)
436
empty_weave = sio.getvalue()
438
dirs = [[], 'revision-store', 'weaves']
440
"This is a Bazaar-NG control directory.\n"
441
"Do not change any files in this directory.\n"),
442
('branch-format', BZR_BRANCH_FORMAT_5),
443
('revision-history', ''),
446
('pending-merges', ''),
447
('inventory', empty_inv),
448
('inventory.weave', empty_weave),
449
('ancestry.weave', empty_weave)
451
cfn = self._rel_controlfilename
452
self._transport.mkdir_multi([cfn(d) for d in dirs])
453
self.put_controlfiles(files)
454
mutter('created control directory in ' + self._transport.base)
456
def _check_format(self, relax_version_check):
326
457
"""Check this branch format is supported.
328
The current tool only supports the current unstable format.
459
The format level is stored, as an integer, in
460
self._branch_format for code that needs to check it later.
330
462
In the future, we might need different in-memory Branch
331
463
classes to support downlevel branches. But not yet.
333
# This ignores newlines so that we can open branches created
334
# on Windows from Linux and so on. I think it might be better
335
# to always make all internal files in unix format.
336
fmt = self.controlfile('branch-format', 'r').read()
337
fmt.replace('\r\n', '')
338
if fmt != BZR_BRANCH_FORMAT:
466
fmt = self.controlfile('branch-format', 'r').read()
468
raise NotBranchError(self.base)
469
mutter("got branch format %r", fmt)
470
if fmt == BZR_BRANCH_FORMAT_5:
471
self._branch_format = 5
472
elif fmt == BZR_BRANCH_FORMAT_4:
473
self._branch_format = 4
475
if (not relax_version_check
476
and self._branch_format != 5):
339
477
raise BzrError('sorry, branch format %r not supported' % fmt,
340
478
['use a different bzr version',
341
'or remove the .bzr directory and "bzr init" again'])
479
'or remove the .bzr directory'
480
' and "bzr init" again'])
343
482
def get_root_id(self):
344
483
"""Return the id of this branches root"""
648
779
# the revision, (add signatures/remove signatures) and still
649
780
# have all hash pointers stay consistent.
650
781
# But for now, just hash the contents.
651
return bzrlib.osutils.sha_file(self.get_revision_xml(revision_id))
654
def get_inventory(self, inventory_id):
655
"""Get Inventory object by hash.
657
TODO: Perhaps for this and similar methods, take a revision
658
parameter which can be either an integer revno or a
660
from bzrlib.inventory import Inventory
661
from bzrlib.xml import unpack_xml
663
return unpack_xml(Inventory, self.get_inventory_xml(inventory_id))
666
def get_inventory_xml(self, inventory_id):
782
return bzrlib.osutils.sha_file(self.get_revision_xml_file(revision_id))
784
def get_ancestry(self, revision_id):
785
"""Return a list of revision-ids integrated by a revision.
787
This currently returns a list, but the ordering is not guaranteed:
790
if revision_id is None:
792
w = self.control_weaves.get_weave('inventory')
793
return [None] + map(w.idx_to_name,
794
w.inclusions([w.lookup(revision_id)]))
796
def get_inventory_weave(self):
797
return self.control_weaves.get_weave('inventory')
799
def get_inventory(self, revision_id):
800
"""Get Inventory object by hash."""
801
xml = self.get_inventory_xml(revision_id)
802
return bzrlib.xml5.serializer_v5.read_inventory_from_string(xml)
804
def get_inventory_xml(self, revision_id):
667
805
"""Get inventory XML as a file object."""
668
return self.inventory_store[inventory_id]
807
assert isinstance(revision_id, basestring), type(revision_id)
808
iw = self.get_inventory_weave()
809
return iw.get_text(iw.lookup(revision_id))
811
raise bzrlib.errors.HistoryMissing(self, 'inventory', revision_id)
671
def get_inventory_sha1(self, inventory_id):
813
def get_inventory_sha1(self, revision_id):
672
814
"""Return the sha1 hash of the inventory entry
674
return sha_file(self.get_inventory_xml(inventory_id))
816
return self.get_revision(revision_id).inventory_sha1
677
818
def get_revision_inventory(self, revision_id):
678
819
"""Return inventory of a past revision."""
679
# bzr 0.0.6 imposes the constraint that the inventory_id
820
# TODO: Unify this with get_inventory()
821
# bzr 0.0.6 and later imposes the constraint that the inventory_id
680
822
# must be the same as its revision, so this is trivial.
681
823
if revision_id == None:
682
from bzrlib.inventory import Inventory
683
824
return Inventory(self.get_root_id())
685
826
return self.get_inventory(revision_id)
688
828
def revision_history(self):
689
"""Return sequence of revision hashes on to this branch.
691
>>> ScratchBranch().revision_history()
829
"""Return sequence of revision hashes on to this branch."""
696
832
return [l.rstrip('\r\n') for l in
802
941
if stop_revision is None:
803
942
stop_revision = other_len
804
elif stop_revision > other_len:
805
raise bzrlib.errors.NoSuchRevision(self, stop_revision)
944
assert isinstance(stop_revision, int)
945
if stop_revision > other_len:
946
raise bzrlib.errors.NoSuchRevision(self, stop_revision)
807
947
return other_history[self_len:stop_revision]
810
949
def update_revisions(self, other, stop_revision=None):
811
"""Pull in all new revisions from other branch.
813
>>> from bzrlib.commit import commit
814
>>> bzrlib.trace.silent = True
815
>>> br1 = ScratchBranch(files=['foo', 'bar'])
818
>>> commit(br1, "lala!", rev_id="REVISION-ID-1", verbose=False)
819
>>> br2 = ScratchBranch()
820
>>> br2.update_revisions(br1)
824
>>> br2.revision_history()
826
>>> br2.update_revisions(br1)
830
>>> br1.text_store.total_size() == br2.text_store.total_size()
833
progress = bzrlib.ui.ui_factory.progress_bar()
834
progress.update('comparing histories')
835
revision_ids = self.missing_revisions(other, stop_revision)
836
count = self.install_revisions(other, revision_ids, progress=progress)
837
self.append_revision(*revision_ids)
838
print "Added %d revisions." % count
841
def install_revisions(self, other, revision_ids, progress=None):
842
if hasattr(other.revision_store, "prefetch"):
843
other.revision_store.prefetch(revision_ids)
844
if hasattr(other.inventory_store, "prefetch"):
845
inventory_ids = [other.get_revision(r).inventory_id
846
for r in revision_ids]
847
other.inventory_store.prefetch(inventory_ids)
852
for rev_id in revision_ids:
855
progress.update('fetching revision', i, len(revision_ids))
856
rev = other.get_revision(rev_id)
857
revisions.append(rev)
858
inv = other.get_inventory(str(rev.inventory_id))
859
for key, entry in inv.iter_entries():
860
if entry.text_id is None:
862
if entry.text_id not in self.text_store:
863
needed_texts.add(entry.text_id)
868
count = self.text_store.copy_multi(other.text_store, needed_texts)
869
print "Added %d texts." % count
870
inventory_ids = [ f.inventory_id for f in revisions ]
871
count = self.inventory_store.copy_multi(other.inventory_store,
873
print "Added %d inventories." % count
874
revision_ids = [ f.revision_id for f in revisions]
875
count = self.revision_store.copy_multi(other.revision_store,
950
"""Pull in new perfect-fit revisions."""
951
from bzrlib.fetch import greedy_fetch
952
from bzrlib.revision import get_intervening_revisions
953
if stop_revision is None:
954
stop_revision = other.last_revision()
955
greedy_fetch(to_branch=self, from_branch=other,
956
revision=stop_revision)
957
pullable_revs = self.missing_revisions(
958
other, other.revision_id_to_revno(stop_revision))
960
greedy_fetch(to_branch=self,
962
revision=pullable_revs[-1])
963
self.append_revision(*pullable_revs)
879
966
def commit(self, *args, **kw):
880
from bzrlib.commit import commit
881
commit(self, *args, **kw)
884
def lookup_revision(self, revision):
885
"""Return the revision identifier for a given revision information."""
886
revno, info = self.get_revision_info(revision)
889
def get_revision_info(self, revision):
890
"""Return (revno, revision id) for revision identifier.
892
revision can be an integer, in which case it is assumed to be revno (though
893
this will translate negative values into positive ones)
894
revision can also be a string, in which case it is parsed for something like
895
'date:' or 'revid:' etc.
900
try:# Convert to int if possible
901
revision = int(revision)
904
revs = self.revision_history()
905
if isinstance(revision, int):
908
# Mabye we should do this first, but we don't need it if revision == 0
910
revno = len(revs) + revision + 1
913
elif isinstance(revision, basestring):
914
for prefix, func in Branch.REVISION_NAMESPACES.iteritems():
915
if revision.startswith(prefix):
916
revno = func(self, revs, revision)
919
raise BzrError('No namespace registered for string: %r' % revision)
921
if revno is None or revno <= 0 or revno > len(revs):
922
raise BzrError("no such revision %s" % revision)
923
return revno, revs[revno-1]
925
def _namespace_revno(self, revs, revision):
926
"""Lookup a revision by revision number"""
927
assert revision.startswith('revno:')
929
return int(revision[6:])
932
REVISION_NAMESPACES['revno:'] = _namespace_revno
934
def _namespace_revid(self, revs, revision):
935
assert revision.startswith('revid:')
937
return revs.index(revision[6:]) + 1
940
REVISION_NAMESPACES['revid:'] = _namespace_revid
942
def _namespace_last(self, revs, revision):
943
assert revision.startswith('last:')
945
offset = int(revision[5:])
950
raise BzrError('You must supply a positive value for --revision last:XXX')
951
return len(revs) - offset + 1
952
REVISION_NAMESPACES['last:'] = _namespace_last
954
def _namespace_tag(self, revs, revision):
955
assert revision.startswith('tag:')
956
raise BzrError('tag: namespace registered, but not implemented.')
957
REVISION_NAMESPACES['tag:'] = _namespace_tag
959
def _namespace_date(self, revs, revision):
960
assert revision.startswith('date:')
962
# Spec for date revisions:
964
# value can be 'yesterday', 'today', 'tomorrow' or a YYYY-MM-DD string.
965
# it can also start with a '+/-/='. '+' says match the first
966
# entry after the given date. '-' is match the first entry before the date
967
# '=' is match the first entry after, but still on the given date.
969
# +2005-05-12 says find the first matching entry after May 12th, 2005 at 0:00
970
# -2005-05-12 says find the first matching entry before May 12th, 2005 at 0:00
971
# =2005-05-12 says find the first match after May 12th, 2005 at 0:00 but before
972
# May 13th, 2005 at 0:00
974
# So the proper way of saying 'give me all entries for today' is:
975
# -r {date:+today}:{date:-tomorrow}
976
# The default is '=' when not supplied
979
if val[:1] in ('+', '-', '='):
980
match_style = val[:1]
983
today = datetime.datetime.today().replace(hour=0,minute=0,second=0,microsecond=0)
984
if val.lower() == 'yesterday':
985
dt = today - datetime.timedelta(days=1)
986
elif val.lower() == 'today':
988
elif val.lower() == 'tomorrow':
989
dt = today + datetime.timedelta(days=1)
992
# This should be done outside the function to avoid recompiling it.
993
_date_re = re.compile(
994
r'(?P<date>(?P<year>\d\d\d\d)-(?P<month>\d\d)-(?P<day>\d\d))?'
996
r'(?P<time>(?P<hour>\d\d):(?P<minute>\d\d)(:(?P<second>\d\d))?)?'
998
m = _date_re.match(val)
999
if not m or (not m.group('date') and not m.group('time')):
1000
raise BzrError('Invalid revision date %r' % revision)
1003
year, month, day = int(m.group('year')), int(m.group('month')), int(m.group('day'))
1005
year, month, day = today.year, today.month, today.day
1007
hour = int(m.group('hour'))
1008
minute = int(m.group('minute'))
1009
if m.group('second'):
1010
second = int(m.group('second'))
1014
hour, minute, second = 0,0,0
1016
dt = datetime.datetime(year=year, month=month, day=day,
1017
hour=hour, minute=minute, second=second)
1021
if match_style == '-':
1023
elif match_style == '=':
1024
last = dt + datetime.timedelta(days=1)
1027
for i in range(len(revs)-1, -1, -1):
1028
r = self.get_revision(revs[i])
1029
# TODO: Handle timezone.
1030
dt = datetime.datetime.fromtimestamp(r.timestamp)
1031
if first >= dt and (last is None or dt >= last):
1034
for i in range(len(revs)):
1035
r = self.get_revision(revs[i])
1036
# TODO: Handle timezone.
1037
dt = datetime.datetime.fromtimestamp(r.timestamp)
1038
if first <= dt and (last is None or dt <= last):
1040
REVISION_NAMESPACES['date:'] = _namespace_date
967
from bzrlib.commit import Commit
968
Commit().commit(self, *args, **kw)
970
def revision_id_to_revno(self, revision_id):
971
"""Given a revision id, return its revno"""
972
if revision_id is None:
974
history = self.revision_history()
976
return history.index(revision_id) + 1
978
raise bzrlib.errors.NoSuchRevision(self, revision_id)
980
def get_rev_id(self, revno, history=None):
981
"""Find the revision id of the specified revno."""
985
history = self.revision_history()
986
elif revno <= 0 or revno > len(history):
987
raise bzrlib.errors.NoSuchRevision(self, revno)
988
return history[revno - 1]
1042
990
def revision_tree(self, revision_id):
1043
991
"""Return Tree for a revision on this branch.
1249
def add_pending_merge(self, revision_id):
1250
from bzrlib.revision import validate_revision_id
1252
validate_revision_id(revision_id)
1201
def add_pending_merge(self, *revision_ids):
1202
# TODO: Perhaps should check at this point that the
1203
# history of the revision is actually present?
1254
1204
p = self.pending_merges()
1255
if revision_id in p:
1257
p.append(revision_id)
1258
self.set_pending_merges(p)
1206
for rev_id in revision_ids:
1212
self.set_pending_merges(p)
1261
1214
def set_pending_merges(self, rev_list):
1217
self.put_controlfile('pending-merges', '\n'.join(rev_list))
1222
def get_parent(self):
1223
"""Return the parent location of the branch.
1225
This is the default location for push/pull/missing. The usual
1226
pattern is that the user can override it by specifying a
1230
_locs = ['parent', 'pull', 'x-pull']
1233
return self.controlfile(l, 'r').read().strip('\n')
1235
if e.errno != errno.ENOENT:
1240
def set_parent(self, url):
1241
# TODO: Maybe delete old location files?
1262
1242
from bzrlib.atomicfile import AtomicFile
1263
1243
self.lock_write()
1265
f = AtomicFile(self.controlfilename('pending-merges'))
1245
f = AtomicFile(self.controlfilename('parent'))
1277
class ScratchBranch(Branch):
1254
def check_revno(self, revno):
1256
Check whether a revno corresponds to any revision.
1257
Zero (the NULL revision) is considered valid.
1260
self.check_real_revno(revno)
1262
def check_real_revno(self, revno):
1264
Check whether a revno corresponds to a real revision.
1265
Zero (the NULL revision) is considered invalid
1267
if revno < 1 or revno > self.revno():
1268
raise InvalidRevisionNumber(revno)
1274
class ScratchBranch(_Branch):
1278
1275
"""Special test class: a branch that cleans up after itself.
1280
1277
>>> b = ScratchBranch()