21
from warnings import warn
22
from cStringIO import StringIO
26
from bzrlib.inventory import InventoryEntry
22
27
from bzrlib.trace import mutter, note
23
from bzrlib.osutils import isdir, quotefn, compact_date, rand_bytes, \
25
sha_file, appendpath, file_kind
26
from bzrlib.errors import BzrError, InvalidRevisionNumber, InvalidRevisionId
28
from bzrlib.osutils import (isdir, quotefn, compact_date, rand_bytes,
29
rename, splitpath, sha_file, appendpath,
31
from bzrlib.errors import (BzrError, InvalidRevisionNumber, InvalidRevisionId,
32
NoSuchRevision, HistoryMissing, NotBranchError,
33
DivergedBranches, LockError, UnlistableStore,
34
UnlistableBranch, NoSuchFile)
28
35
from bzrlib.textui import show_status
29
from bzrlib.revision import Revision
30
from bzrlib.xml import unpack_xml
36
from bzrlib.revision import Revision, validate_revision_id, is_ancestor
31
37
from bzrlib.delta import compare_trees
32
38
from bzrlib.tree import EmptyTree, RevisionTree
34
BZR_BRANCH_FORMAT = "Bazaar-NG branch, format 0.0.4\n"
39
from bzrlib.inventory import Inventory
40
from bzrlib.store import copy_all
41
from bzrlib.store.compressed_text import CompressedTextStore
42
from bzrlib.store.text import TextStore
43
from bzrlib.store.weave import WeaveStore
44
from bzrlib.transport import Transport, get_transport
49
BZR_BRANCH_FORMAT_4 = "Bazaar-NG branch, format 0.0.4\n"
50
BZR_BRANCH_FORMAT_5 = "Bazaar-NG branch, format 5\n"
35
51
## TODO: Maybe include checks for common corruption of newlines, etc?
38
54
# TODO: Some operations like log might retrieve the same revisions
39
55
# repeatedly to calculate deltas. We could perhaps have a weakref
40
# cache in memory to make this faster.
43
def find_branch(f, **args):
44
if f and (f.startswith('http://') or f.startswith('https://')):
46
return remotebranch.RemoteBranch(f, **args)
48
return Branch(f, **args)
51
def find_cached_branch(f, cache_root, **args):
52
from remotebranch import RemoteBranch
53
br = find_branch(f, **args)
54
def cacheify(br, store_name):
55
from meta_store import CachedStore
56
cache_path = os.path.join(cache_root, store_name)
58
new_store = CachedStore(getattr(br, store_name), cache_path)
59
setattr(br, store_name, new_store)
61
if isinstance(br, RemoteBranch):
62
cacheify(br, 'inventory_store')
63
cacheify(br, 'text_store')
64
cacheify(br, 'revision_store')
56
# cache in memory to make this faster. In general anything can be
57
# cached in memory between lock and unlock operations.
59
def find_branch(*ignored, **ignored_too):
60
# XXX: leave this here for about one release, then remove it
61
raise NotImplementedError('find_branch() is not supported anymore, '
62
'please use one of the new branch constructors')
68
63
def _relpath(base, path):
69
64
"""Return path relative to base, or raise exception.
150
175
Lock object from bzrlib.lock.
177
# We actually expect this class to be somewhat short-lived; part of its
178
# purpose is to try to isolate what bits of the branch logic are tied to
179
# filesystem access, so that in a later step, we can extricate them to
180
# a separarte ("storage") class.
153
181
_lock_mode = None
154
182
_lock_count = None
184
_inventory_weave = None
157
186
# Map some sort of prefix into a namespace
158
187
# stuff like "revno:10", "revid:", etc.
159
188
# This should match a prefix with a function which accepts
160
189
REVISION_NAMESPACES = {}
162
def __init__(self, base, init=False, find_root=True):
191
def push_stores(self, branch_to):
192
"""Copy the content of this branches store to branch_to."""
193
if (self._branch_format != branch_to._branch_format
194
or self._branch_format != 4):
195
from bzrlib.fetch import greedy_fetch
196
mutter("falling back to fetch logic to push between %s(%s) and %s(%s)",
197
self, self._branch_format, branch_to, branch_to._branch_format)
198
greedy_fetch(to_branch=branch_to, from_branch=self,
199
revision=self.last_revision())
202
store_pairs = ((self.text_store, branch_to.text_store),
203
(self.inventory_store, branch_to.inventory_store),
204
(self.revision_store, branch_to.revision_store))
206
for from_store, to_store in store_pairs:
207
copy_all(from_store, to_store)
208
except UnlistableStore:
209
raise UnlistableBranch(from_store)
211
def __init__(self, transport, init=False,
212
relax_version_check=False):
163
213
"""Create new branch object at a particular location.
165
base -- Base directory for the branch.
215
transport -- A Transport object, defining how to access files.
216
(If a string, transport.transport() will be used to
217
create a Transport object)
167
219
init -- If True, create new control files in a previously
168
220
unversioned directory. If False, the branch must already
171
find_root -- If true and init is false, find the root of the
172
existing branch containing base.
223
relax_version_check -- If true, the usual check for the branch
224
version is not applied. This is intended only for
225
upgrade/recovery type use; it's not guaranteed that
226
all operations will work on old format branches.
174
228
In the test suite, creation of new trees is tested using the
175
229
`ScratchBranch` class.
177
from bzrlib.store import ImmutableStore
231
assert isinstance(transport, Transport), \
232
"%r is not a Transport" % transport
233
self._transport = transport
179
self.base = os.path.realpath(base)
180
235
self._make_control()
182
self.base = find_branch_root(base)
184
self.base = os.path.realpath(base)
185
if not isdir(self.controlfilename('.')):
186
from errors import NotBranchError
187
raise NotBranchError("not a bzr branch: %s" % quotefn(base),
188
['use "bzr init" to initialize a new working tree',
189
'current bzr can only operate from top-of-tree'])
192
self.text_store = ImmutableStore(self.controlfilename('text-store'))
193
self.revision_store = ImmutableStore(self.controlfilename('revision-store'))
194
self.inventory_store = ImmutableStore(self.controlfilename('inventory-store'))
236
self._check_format(relax_version_check)
238
def get_store(name, compressed=True):
239
relpath = self._rel_controlfilename(name)
241
store = CompressedTextStore(self._transport.clone(relpath))
243
store = TextStore(self._transport.clone(relpath))
244
if self._transport.should_cache():
245
from meta_store import CachedStore
246
cache_path = os.path.join(self.cache_root, name)
248
store = CachedStore(store, cache_path)
251
relpath = self._rel_controlfilename(name)
252
ws = WeaveStore(self._transport.clone(relpath))
253
if self._transport.should_cache():
254
ws.enable_cache = True
257
if self._branch_format == 4:
258
self.inventory_store = get_store('inventory-store')
259
self.text_store = get_store('text-store')
260
self.revision_store = get_store('revision-store')
261
elif self._branch_format == 5:
262
self.control_weaves = get_weave([])
263
self.weave_store = get_weave('weaves')
264
self.revision_store = get_store('revision-store', compressed=False)
197
266
def __str__(self):
198
return '%s(%r)' % (self.__class__.__name__, self.base)
267
return '%s(%r)' % (self.__class__.__name__, self._transport.base)
201
270
__repr__ = __str__
282
368
Controlfiles should almost never be opened in write mode but
283
369
rather should be atomically copied and replaced using atomicfile.
286
fn = self.controlfilename(file_or_path)
288
if mode == 'rb' or mode == 'wb':
289
return file(fn, mode)
290
elif mode == 'r' or mode == 'w':
291
# open in binary mode anyhow so there's no newline translation;
292
# codecs uses line buffering by default; don't want that.
294
return codecs.open(fn, mode + 'b', 'utf-8',
373
relpath = self._rel_controlfilename(file_or_path)
374
#TODO: codecs.open() buffers linewise, so it was overloaded with
375
# a much larger buffer, do we need to do the same for getreader/getwriter?
377
return self._transport.get(relpath)
379
raise BzrError("Branch.controlfile(mode='wb') is not supported, use put_controlfiles")
381
return codecs.getreader('utf-8')(self._transport.get(relpath), errors='replace')
383
raise BzrError("Branch.controlfile(mode='w') is not supported, use put_controlfiles")
297
385
raise BzrError("invalid controlfile mode %r" % mode)
387
def put_controlfile(self, path, f, encode=True):
388
"""Write an entry as a controlfile.
390
:param path: The path to put the file, relative to the .bzr control
392
:param f: A file-like or string object whose contents should be copied.
393
:param encode: If true, encode the contents as utf-8
395
self.put_controlfiles([(path, f)], encode=encode)
397
def put_controlfiles(self, files, encode=True):
398
"""Write several entries as controlfiles.
400
:param files: A list of [(path, file)] pairs, where the path is the directory
401
underneath the bzr control directory
402
:param encode: If true, encode the contents as utf-8
406
for path, f in files:
408
if isinstance(f, basestring):
409
f = f.encode('utf-8', 'replace')
411
f = codecs.getwriter('utf-8')(f, errors='replace')
412
path = self._rel_controlfilename(path)
413
ctrl_files.append((path, f))
414
self._transport.put_multi(ctrl_files)
301
416
def _make_control(self):
302
417
from bzrlib.inventory import Inventory
303
from bzrlib.xml import pack_xml
418
from bzrlib.weavefile import write_weave_v5
419
from bzrlib.weave import Weave
305
os.mkdir(self.controlfilename([]))
306
self.controlfile('README', 'w').write(
421
# Create an empty inventory
423
# if we want per-tree root ids then this is the place to set
424
# them; they're not needed for now and so ommitted for
426
bzrlib.xml5.serializer_v5.write_inventory(Inventory(), sio)
427
empty_inv = sio.getvalue()
429
bzrlib.weavefile.write_weave_v5(Weave(), sio)
430
empty_weave = sio.getvalue()
432
dirs = [[], 'revision-store', 'weaves']
307
434
"This is a Bazaar-NG control directory.\n"
308
"Do not change any files in this directory.\n")
309
self.controlfile('branch-format', 'w').write(BZR_BRANCH_FORMAT)
310
for d in ('text-store', 'inventory-store', 'revision-store'):
311
os.mkdir(self.controlfilename(d))
312
for f in ('revision-history', 'merged-patches',
313
'pending-merged-patches', 'branch-name',
316
self.controlfile(f, 'w').write('')
317
mutter('created control directory in ' + self.base)
319
pack_xml(Inventory(gen_root_id()), self.controlfile('inventory','w'))
322
def _check_format(self):
435
"Do not change any files in this directory.\n"),
436
('branch-format', BZR_BRANCH_FORMAT_5),
437
('revision-history', ''),
440
('pending-merges', ''),
441
('inventory', empty_inv),
442
('inventory.weave', empty_weave),
443
('ancestry.weave', empty_weave)
445
cfn = self._rel_controlfilename
446
self._transport.mkdir_multi([cfn(d) for d in dirs])
447
self.put_controlfiles(files)
448
mutter('created control directory in ' + self._transport.base)
450
def _check_format(self, relax_version_check):
323
451
"""Check this branch format is supported.
325
The current tool only supports the current unstable format.
453
The format level is stored, as an integer, in
454
self._branch_format for code that needs to check it later.
327
456
In the future, we might need different in-memory Branch
328
457
classes to support downlevel branches. But not yet.
330
# This ignores newlines so that we can open branches created
331
# on Windows from Linux and so on. I think it might be better
332
# to always make all internal files in unix format.
333
fmt = self.controlfile('branch-format', 'r').read()
334
fmt.replace('\r\n', '')
335
if fmt != BZR_BRANCH_FORMAT:
460
fmt = self.controlfile('branch-format', 'r').read()
462
raise NotBranchError(self.base)
464
if fmt == BZR_BRANCH_FORMAT_5:
465
self._branch_format = 5
466
elif fmt == BZR_BRANCH_FORMAT_4:
467
self._branch_format = 4
469
if (not relax_version_check
470
and self._branch_format != 5):
336
471
raise BzrError('sorry, branch format %r not supported' % fmt,
337
472
['use a different bzr version',
338
'or remove the .bzr directory and "bzr init" again'])
473
'or remove the .bzr directory'
474
' and "bzr init" again'])
340
476
def get_root_id(self):
341
477
"""Return the id of this branches root"""
645
765
# the revision, (add signatures/remove signatures) and still
646
766
# have all hash pointers stay consistent.
647
767
# But for now, just hash the contents.
648
return bzrlib.osutils.sha_file(self.get_revision_xml(revision_id))
651
def get_inventory(self, inventory_id):
652
"""Get Inventory object by hash.
654
TODO: Perhaps for this and similar methods, take a revision
655
parameter which can be either an integer revno or a
657
from bzrlib.inventory import Inventory
658
from bzrlib.xml import unpack_xml
660
return unpack_xml(Inventory, self.inventory_store[inventory_id])
663
def get_inventory_sha1(self, inventory_id):
768
return bzrlib.osutils.sha_file(self.get_revision_xml_file(revision_id))
770
def _get_ancestry_weave(self):
771
return self.control_weaves.get_weave('ancestry')
773
def get_ancestry(self, revision_id):
774
"""Return a list of revision-ids integrated by a revision.
777
if revision_id is None:
779
w = self._get_ancestry_weave()
780
return [None] + [l[:-1] for l in w.get_iter(w.lookup(revision_id))]
782
def get_inventory_weave(self):
783
return self.control_weaves.get_weave('inventory')
785
def get_inventory(self, revision_id):
786
"""Get Inventory object by hash."""
787
xml = self.get_inventory_xml(revision_id)
788
return bzrlib.xml5.serializer_v5.read_inventory_from_string(xml)
790
def get_inventory_xml(self, revision_id):
791
"""Get inventory XML as a file object."""
793
assert isinstance(revision_id, basestring), type(revision_id)
794
iw = self.get_inventory_weave()
795
return iw.get_text(iw.lookup(revision_id))
797
raise bzrlib.errors.HistoryMissing(self, 'inventory', revision_id)
799
def get_inventory_sha1(self, revision_id):
664
800
"""Return the sha1 hash of the inventory entry
666
return sha_file(self.inventory_store[inventory_id])
802
return self.get_revision(revision_id).inventory_sha1
669
804
def get_revision_inventory(self, revision_id):
670
805
"""Return inventory of a past revision."""
671
# bzr 0.0.6 imposes the constraint that the inventory_id
806
# TODO: Unify this with get_inventory()
807
# bzr 0.0.6 and later imposes the constraint that the inventory_id
672
808
# must be the same as its revision, so this is trivial.
673
809
if revision_id == None:
674
from bzrlib.inventory import Inventory
675
810
return Inventory(self.get_root_id())
677
812
return self.get_inventory(revision_id)
680
814
def revision_history(self):
681
"""Return sequence of revision hashes on to this branch.
683
>>> ScratchBranch().revision_history()
815
"""Return sequence of revision hashes on to this branch."""
688
818
return [l.rstrip('\r\n') for l in
794
927
if stop_revision is None:
795
928
stop_revision = other_len
796
elif stop_revision > other_len:
797
raise NoSuchRevision(self, stop_revision)
930
assert isinstance(stop_revision, int)
931
if stop_revision > other_len:
932
raise bzrlib.errors.NoSuchRevision(self, stop_revision)
799
933
return other_history[self_len:stop_revision]
802
935
def update_revisions(self, other, stop_revision=None):
803
"""Pull in all new revisions from other branch.
805
>>> from bzrlib.commit import commit
806
>>> bzrlib.trace.silent = True
807
>>> br1 = ScratchBranch(files=['foo', 'bar'])
810
>>> commit(br1, "lala!", rev_id="REVISION-ID-1", verbose=False)
811
>>> br2 = ScratchBranch()
812
>>> br2.update_revisions(br1)
816
>>> br2.revision_history()
818
>>> br2.update_revisions(br1)
822
>>> br1.text_store.total_size() == br2.text_store.total_size()
825
from bzrlib.progress import ProgressBar
829
pb.update('comparing histories')
830
revision_ids = self.missing_revisions(other, stop_revision)
832
if hasattr(other.revision_store, "prefetch"):
833
other.revision_store.prefetch(revision_ids)
834
if hasattr(other.inventory_store, "prefetch"):
835
inventory_ids = [other.get_revision(r).inventory_id
836
for r in revision_ids]
837
other.inventory_store.prefetch(inventory_ids)
842
for rev_id in revision_ids:
844
pb.update('fetching revision', i, len(revision_ids))
845
rev = other.get_revision(rev_id)
846
revisions.append(rev)
847
inv = other.get_inventory(str(rev.inventory_id))
848
for key, entry in inv.iter_entries():
849
if entry.text_id is None:
851
if entry.text_id not in self.text_store:
852
needed_texts.add(entry.text_id)
856
count = self.text_store.copy_multi(other.text_store, needed_texts)
857
print "Added %d texts." % count
858
inventory_ids = [ f.inventory_id for f in revisions ]
859
count = self.inventory_store.copy_multi(other.inventory_store,
861
print "Added %d inventories." % count
862
revision_ids = [ f.revision_id for f in revisions]
863
count = self.revision_store.copy_multi(other.revision_store,
865
for revision_id in revision_ids:
866
self.append_revision(revision_id)
867
print "Added %d revisions." % count
936
"""Pull in new perfect-fit revisions."""
937
from bzrlib.fetch import greedy_fetch
938
from bzrlib.revision import get_intervening_revisions
939
if stop_revision is None:
940
stop_revision = other.last_revision()
941
greedy_fetch(to_branch=self, from_branch=other,
942
revision=stop_revision)
943
pullable_revs = self.missing_revisions(
944
other, other.revision_id_to_revno(stop_revision))
946
greedy_fetch(to_branch=self,
948
revision=pullable_revs[-1])
949
self.append_revision(*pullable_revs)
870
952
def commit(self, *args, **kw):
871
from bzrlib.commit import commit
872
commit(self, *args, **kw)
875
def lookup_revision(self, revision):
876
"""Return the revision identifier for a given revision information."""
877
revno, info = self.get_revision_info(revision)
880
def get_revision_info(self, revision):
881
"""Return (revno, revision id) for revision identifier.
883
revision can be an integer, in which case it is assumed to be revno (though
884
this will translate negative values into positive ones)
885
revision can also be a string, in which case it is parsed for something like
886
'date:' or 'revid:' etc.
891
try:# Convert to int if possible
892
revision = int(revision)
895
revs = self.revision_history()
896
if isinstance(revision, int):
899
# Mabye we should do this first, but we don't need it if revision == 0
901
revno = len(revs) + revision + 1
904
elif isinstance(revision, basestring):
905
for prefix, func in Branch.REVISION_NAMESPACES.iteritems():
906
if revision.startswith(prefix):
907
revno = func(self, revs, revision)
910
raise BzrError('No namespace registered for string: %r' % revision)
912
if revno is None or revno <= 0 or revno > len(revs):
913
raise BzrError("no such revision %s" % revision)
914
return revno, revs[revno-1]
916
def _namespace_revno(self, revs, revision):
917
"""Lookup a revision by revision number"""
918
assert revision.startswith('revno:')
920
return int(revision[6:])
923
REVISION_NAMESPACES['revno:'] = _namespace_revno
925
def _namespace_revid(self, revs, revision):
926
assert revision.startswith('revid:')
928
return revs.index(revision[6:]) + 1
931
REVISION_NAMESPACES['revid:'] = _namespace_revid
933
def _namespace_last(self, revs, revision):
934
assert revision.startswith('last:')
936
offset = int(revision[5:])
941
raise BzrError('You must supply a positive value for --revision last:XXX')
942
return len(revs) - offset + 1
943
REVISION_NAMESPACES['last:'] = _namespace_last
945
def _namespace_tag(self, revs, revision):
946
assert revision.startswith('tag:')
947
raise BzrError('tag: namespace registered, but not implemented.')
948
REVISION_NAMESPACES['tag:'] = _namespace_tag
950
def _namespace_date(self, revs, revision):
951
assert revision.startswith('date:')
953
# Spec for date revisions:
955
# value can be 'yesterday', 'today', 'tomorrow' or a YYYY-MM-DD string.
956
# it can also start with a '+/-/='. '+' says match the first
957
# entry after the given date. '-' is match the first entry before the date
958
# '=' is match the first entry after, but still on the given date.
960
# +2005-05-12 says find the first matching entry after May 12th, 2005 at 0:00
961
# -2005-05-12 says find the first matching entry before May 12th, 2005 at 0:00
962
# =2005-05-12 says find the first match after May 12th, 2005 at 0:00 but before
963
# May 13th, 2005 at 0:00
965
# So the proper way of saying 'give me all entries for today' is:
966
# -r {date:+today}:{date:-tomorrow}
967
# The default is '=' when not supplied
970
if val[:1] in ('+', '-', '='):
971
match_style = val[:1]
974
today = datetime.datetime.today().replace(hour=0,minute=0,second=0,microsecond=0)
975
if val.lower() == 'yesterday':
976
dt = today - datetime.timedelta(days=1)
977
elif val.lower() == 'today':
979
elif val.lower() == 'tomorrow':
980
dt = today + datetime.timedelta(days=1)
983
# This should be done outside the function to avoid recompiling it.
984
_date_re = re.compile(
985
r'(?P<date>(?P<year>\d\d\d\d)-(?P<month>\d\d)-(?P<day>\d\d))?'
987
r'(?P<time>(?P<hour>\d\d):(?P<minute>\d\d)(:(?P<second>\d\d))?)?'
989
m = _date_re.match(val)
990
if not m or (not m.group('date') and not m.group('time')):
991
raise BzrError('Invalid revision date %r' % revision)
994
year, month, day = int(m.group('year')), int(m.group('month')), int(m.group('day'))
996
year, month, day = today.year, today.month, today.day
998
hour = int(m.group('hour'))
999
minute = int(m.group('minute'))
1000
if m.group('second'):
1001
second = int(m.group('second'))
1005
hour, minute, second = 0,0,0
1007
dt = datetime.datetime(year=year, month=month, day=day,
1008
hour=hour, minute=minute, second=second)
1012
if match_style == '-':
1014
elif match_style == '=':
1015
last = dt + datetime.timedelta(days=1)
1018
for i in range(len(revs)-1, -1, -1):
1019
r = self.get_revision(revs[i])
1020
# TODO: Handle timezone.
1021
dt = datetime.datetime.fromtimestamp(r.timestamp)
1022
if first >= dt and (last is None or dt >= last):
1025
for i in range(len(revs)):
1026
r = self.get_revision(revs[i])
1027
# TODO: Handle timezone.
1028
dt = datetime.datetime.fromtimestamp(r.timestamp)
1029
if first <= dt and (last is None or dt <= last):
1031
REVISION_NAMESPACES['date:'] = _namespace_date
953
from bzrlib.commit import Commit
954
Commit().commit(self, *args, **kw)
956
def revision_id_to_revno(self, revision_id):
957
"""Given a revision id, return its revno"""
958
if revision_id is None:
960
history = self.revision_history()
962
return history.index(revision_id) + 1
964
raise bzrlib.errors.NoSuchRevision(self, revision_id)
966
def get_rev_id(self, revno, history=None):
967
"""Find the revision id of the specified revno."""
971
history = self.revision_history()
972
elif revno <= 0 or revno > len(history):
973
raise bzrlib.errors.NoSuchRevision(self, revno)
974
return history[revno - 1]
1033
976
def revision_tree(self, revision_id):
1034
977
"""Return Tree for a revision on this branch.
1240
def add_pending_merge(self, revision_id):
1241
from bzrlib.revision import validate_revision_id
1243
validate_revision_id(revision_id)
1187
def add_pending_merge(self, *revision_ids):
1188
# TODO: Perhaps should check at this point that the
1189
# history of the revision is actually present?
1190
for rev_id in revision_ids:
1191
validate_revision_id(rev_id)
1245
1193
p = self.pending_merges()
1246
if revision_id in p:
1248
p.append(revision_id)
1249
self.set_pending_merges(p)
1195
for rev_id in revision_ids:
1201
self.set_pending_merges(p)
1252
1203
def set_pending_merges(self, rev_list):
1206
self.put_controlfile('pending-merges', '\n'.join(rev_list))
1211
def get_parent(self):
1212
"""Return the parent location of the branch.
1214
This is the default location for push/pull/missing. The usual
1215
pattern is that the user can override it by specifying a
1219
_locs = ['parent', 'pull', 'x-pull']
1222
return self.controlfile(l, 'r').read().strip('\n')
1224
if e.errno != errno.ENOENT:
1229
def set_parent(self, url):
1230
# TODO: Maybe delete old location files?
1253
1231
from bzrlib.atomicfile import AtomicFile
1254
1232
self.lock_write()
1256
f = AtomicFile(self.controlfilename('pending-merges'))
1234
f = AtomicFile(self.controlfilename('parent'))
1268
class ScratchBranch(Branch):
1243
def check_revno(self, revno):
1245
Check whether a revno corresponds to any revision.
1246
Zero (the NULL revision) is considered valid.
1249
self.check_real_revno(revno)
1251
def check_real_revno(self, revno):
1253
Check whether a revno corresponds to a real revision.
1254
Zero (the NULL revision) is considered invalid
1256
if revno < 1 or revno > self.revno():
1257
raise InvalidRevisionNumber(revno)
1263
class ScratchBranch(_Branch):
1269
1264
"""Special test class: a branch that cleans up after itself.
1271
1266
>>> b = ScratchBranch()