74
44
# TODO: Parallel-extract that passes back each line along with a
75
45
# description of which revisions include it. Nice for checking all
81
class WeaveError(Exception):
82
"""Exception in processing weave"""
85
class WeaveFormatError(WeaveError):
86
"""Weave invariant violated"""
46
# shas or calculating stats in parallel.
48
# TODO: Using a single _extract routine and then processing the output
49
# is probably inefficient. It's simple enough that we can afford to
50
# have slight specializations for different ways its used: annotate,
51
# basis for add, get, etc.
53
# TODO: Probably the API should work only in names to hide the integer
54
# indexes from the user.
56
# TODO: Is there any potential performance win by having an add()
57
# variant that is passed a pre-cooked version of the single basis
60
# TODO: Reweave can possibly be made faster by remembering diffs
61
# where the basis and destination are unchanged.
63
# FIXME: Sometimes we will be given a parents list for a revision
64
# that includes some redundant parents (i.e. already a parent of
65
# something in the list.) We should eliminate them. This can
66
# be done fairly efficiently because the sequence numbers constrain
67
# the possible relationships.
69
# FIXME: the conflict markers should be *7* characters
72
from cStringIO import StringIO
81
from bzrlib.errors import (WeaveError, WeaveFormatError, WeaveParentMismatch,
82
RevisionAlreadyPresent,
84
UnavailableRepresentation,
85
WeaveRevisionAlreadyPresent,
86
WeaveRevisionNotPresent,
88
import bzrlib.errors as errors
89
from bzrlib.osutils import dirname, sha_strings, split_lines
90
import bzrlib.patiencediff
91
from bzrlib.revision import NULL_REVISION
92
from bzrlib.symbol_versioning import *
93
from bzrlib.trace import mutter
94
from bzrlib.tsort import topo_sort
95
from bzrlib.versionedfile import (
101
from bzrlib.weavefile import _read_weave_v5, write_weave_v5
104
class WeaveContentFactory(ContentFactory):
105
"""Content factory for streaming from weaves.
107
:seealso ContentFactory:
110
def __init__(self, version, weave):
111
"""Create a WeaveContentFactory for version from weave."""
112
ContentFactory.__init__(self)
113
self.sha1 = weave.get_sha1s([version])[0]
114
self.key = (version,)
115
parents = weave.get_parent_map([version])[version]
116
self.parents = tuple((parent,) for parent in parents)
117
self.storage_kind = 'fulltext'
120
def get_bytes_as(self, storage_kind):
121
if storage_kind == 'fulltext':
122
return self._weave.get_text(self.key[-1])
124
raise UnavailableRepresentation(self.key, storage_kind, 'fulltext')
127
class Weave(VersionedFile):
90
128
"""weave - versioned text file storage.
92
130
A Weave manages versions of line-based text files, keeping track
160
200
each version; the parent's parents are implied.
163
List of hex SHA-1 of each version, or None if not recorded.
203
List of hex SHA-1 of each version.
206
List of symbolic names for each version. Each should be unique.
209
For each name, the version number.
212
Descriptive name of this weave; typically the filename if known.
166
__slots__ = ['_weave', '_parents', '_sha1s']
216
__slots__ = ['_weave', '_parents', '_sha1s', '_names', '_name_map',
217
'_weave_name', '_matcher']
219
def __init__(self, weave_name=None, access_mode='w', matcher=None, get_scope=None):
222
:param get_scope: A callable that returns an opaque object to be used
223
for detecting when this weave goes out of scope (should stop
224
answering requests or allowing mutation).
226
super(Weave, self).__init__(access_mode)
170
228
self._parents = []
232
self._weave_name = weave_name
234
self._matcher = bzrlib.patiencediff.PatienceSequenceMatcher
236
self._matcher = matcher
237
if get_scope is None:
238
get_scope = lambda:None
239
self._get_scope = get_scope
240
self._scope = get_scope()
241
self._access_mode = access_mode
244
return "Weave(%r)" % self._weave_name
246
def _check_write_ok(self):
247
"""Is the versioned file marked as 'finished' ? Raise if it is."""
248
if self._get_scope() != self._scope:
249
raise errors.OutSideTransaction()
250
if self._access_mode != 'w':
251
raise errors.ReadOnlyObjectDirtiedError(self)
254
"""Return a deep copy of self.
256
The copy can be modified without affecting the original weave."""
258
other._weave = self._weave[:]
259
other._parents = self._parents[:]
260
other._sha1s = self._sha1s[:]
261
other._names = self._names[:]
262
other._name_map = self._name_map.copy()
263
other._weave_name = self._weave_name
174
266
def __eq__(self, other):
175
267
if not isinstance(other, Weave):
177
269
return self._parents == other._parents \
178
and self._weave == other._weave
270
and self._weave == other._weave \
271
and self._sha1s == other._sha1s
181
273
def __ne__(self, other):
182
274
return not self.__eq__(other)
185
def add(self, parents, text):
276
def _idx_to_name(self, version):
277
return self._names[version]
279
def _lookup(self, name):
280
"""Convert symbolic version name to index."""
281
self.check_not_reserved_id(name)
283
return self._name_map[name]
285
raise RevisionNotPresent(name, self._weave_name)
288
"""See VersionedFile.versions."""
289
return self._names[:]
291
def has_version(self, version_id):
292
"""See VersionedFile.has_version."""
293
return (version_id in self._name_map)
295
__contains__ = has_version
297
def get_record_stream(self, versions, ordering, include_delta_closure):
298
"""Get a stream of records for versions.
300
:param versions: The versions to include. Each version is a tuple
302
:param ordering: Either 'unordered' or 'topological'. A topologically
303
sorted stream has compression parents strictly before their
305
:param include_delta_closure: If True then the closure across any
306
compression parents will be included (in the opaque data).
307
:return: An iterator of ContentFactory objects, each of which is only
308
valid until the iterator is advanced.
310
versions = [version[-1] for version in versions]
311
if ordering == 'topological':
312
parents = self.get_parent_map(versions)
313
new_versions = topo_sort(parents)
314
new_versions.extend(set(versions).difference(set(parents)))
315
versions = new_versions
316
for version in versions:
318
yield WeaveContentFactory(version, self)
320
yield AbsentContentFactory((version,))
322
def get_parent_map(self, version_ids):
323
"""See VersionedFile.get_parent_map."""
325
for version_id in version_ids:
326
if version_id == NULL_REVISION:
331
map(self._idx_to_name,
332
self._parents[self._lookup(version_id)]))
333
except RevisionNotPresent:
335
result[version_id] = parents
338
def get_parents_with_ghosts(self, version_id):
339
raise NotImplementedError(self.get_parents_with_ghosts)
341
def insert_record_stream(self, stream):
342
"""Insert a record stream into this versioned file.
344
:param stream: A stream of records to insert.
346
:seealso VersionedFile.get_record_stream:
349
for record in stream:
350
# Raise an error when a record is missing.
351
if record.storage_kind == 'absent':
352
raise RevisionNotPresent([record.key[0]], self)
353
# adapt to non-tuple interface
354
parents = [parent[0] for parent in record.parents]
355
if record.storage_kind == 'fulltext':
356
self.add_lines(record.key[0], parents,
357
split_lines(record.get_bytes_as('fulltext')))
359
adapter_key = record.storage_kind, 'fulltext'
361
adapter = adapters[adapter_key]
363
adapter_factory = adapter_registry.get(adapter_key)
364
adapter = adapter_factory(self)
365
adapters[adapter_key] = adapter
366
lines = split_lines(adapter.get_bytes(
367
record, record.get_bytes_as(record.storage_kind)))
369
self.add_lines(record.key[0], parents, lines)
370
except RevisionAlreadyPresent:
373
def _check_repeated_add(self, name, parents, text, sha1):
374
"""Check that a duplicated add is OK.
376
If it is, return the (old) index; otherwise raise an exception.
378
idx = self._lookup(name)
379
if sorted(self._parents[idx]) != sorted(parents) \
380
or sha1 != self._sha1s[idx]:
381
raise RevisionAlreadyPresent(name, self._weave_name)
384
def _add_lines(self, version_id, parents, lines, parent_texts,
385
left_matching_blocks, nostore_sha, random_id, check_content):
386
"""See VersionedFile.add_lines."""
387
idx = self._add(version_id, lines, map(self._lookup, parents),
388
nostore_sha=nostore_sha)
389
return sha_strings(lines), sum(map(len, lines)), idx
391
def _add(self, version_id, lines, parents, sha1=None, nostore_sha=None):
186
392
"""Add a single text on top of the weave.
188
394
Returns the index number of the newly added version.
397
Symbolic name for this version.
398
(Typically the revision-id of the revision that added it.)
191
401
List or set of direct parent version numbers.
194
Sequence of lines to be added in the new version."""
404
Sequence of lines to be added in the new version.
406
:param nostore_sha: See VersionedFile.add_lines.
408
self._check_lines_not_unicode(lines)
409
self._check_lines_are_lines(lines)
411
sha1 = sha_strings(lines)
412
if sha1 == nostore_sha:
413
raise errors.ExistingContent
414
if version_id in self._name_map:
415
return self._check_repeated_add(version_id, parents, lines, sha1)
196
417
self._check_versions(parents)
197
## self._check_lines(text)
418
## self._check_lines(lines)
198
419
new_version = len(self._parents)
206
# if we abort after here the weave will be corrupt
207
self._parents.append(frozenset(parents))
421
# if we abort after here the (in-memory) weave will be corrupt because only
422
# some fields are updated
423
# XXX: FIXME implement a succeed-or-fail of the rest of this routine.
424
# - Robert Collins 20060226
425
self._parents.append(parents[:])
208
426
self._sha1s.append(sha1)
427
self._names.append(version_id)
428
self._name_map[version_id] = new_version
378
585
lineno = 0 # line of weave, 0-based
380
587
for l in self._weave:
381
if isinstance(l, tuple):
588
if l.__class__ == tuple:
592
istack.append(self._names[v])
596
dset.add(self._names[v])
394
raise WeaveFormatError('unexpected instruction %r'
397
assert isinstance(l, basestring)
399
yield lineno, istack[-1], dset, l
404
def _extract(self, versions):
405
"""Yield annotation of lines in included set.
407
Yields a sequence of tuples (origin, lineno, text), where
408
origin is the origin version, lineno the index in the weave,
409
and text the text of the line.
411
The set typically but not necessarily corresponds to a version.
413
included = self.inclusions(versions)
418
lineno = 0 # line of weave, 0-based
424
WFE = WeaveFormatError
426
for l in self._weave:
427
if isinstance(l, tuple):
431
assert v not in istack
446
assert isinstance(l, basestring)
448
isactive = (not dset) and istack and (istack[-1] in included)
450
result.append((istack[-1], lineno, l))
598
dset.remove(self._names[v])
600
raise WeaveFormatError('unexpected instruction %r' % v)
602
yield lineno, istack[-1], frozenset(dset), l
454
raise WFE("unclosed insertion blocks at end of weave",
606
raise WeaveFormatError("unclosed insertion blocks "
607
"at end of weave: %s" % istack)
457
raise WFE("unclosed deletion blocks at end of weave",
464
def get_iter(self, version):
465
"""Yield lines for the specified version."""
466
for origin, lineno, line in self._extract([version]):
470
def get(self, index):
471
return list(self.get_iter(index))
474
def mash_iter(self, included):
475
"""Return composed version of multiple included versions."""
476
for origin, lineno, text in self._extract(included):
480
def dump(self, to_file):
481
from pprint import pprint
482
print >>to_file, "Weave._weave = ",
483
pprint(self._weave, to_file)
484
print >>to_file, "Weave._parents = ",
485
pprint(self._parents, to_file)
489
def numversions(self):
490
l = len(self._parents)
491
assert l == len(self._sha1s)
496
return self.numversions()
499
def check(self, progress_bar=None):
500
# check no circular inclusions
501
for version in range(self.numversions()):
502
inclusions = list(self._parents[version])
505
if inclusions[-1] >= version:
506
raise WeaveFormatError("invalid included version %d for index %d"
507
% (inclusions[-1], version))
509
# try extracting all versions; this is a bit slow and parallel
510
# extraction could be used
512
nv = self.numversions()
513
for version in range(nv):
515
progress_bar.update('checking text', version, nv)
517
for l in self.get_iter(version):
520
expected = self._sha1s[version]
522
raise WeaveError("mismatched sha1 for version %d; "
523
"got %s, expected %s"
524
% (version, hd, expected))
526
# TODO: check insertions are properly nested, that there are
527
# no lines outside of insertion blocks, that deletions are
528
# properly paired, etc.
532
def merge(self, merge_versions):
533
"""Automerge and mark conflicts between versions.
535
This returns a sequence, each entry describing alternatives
536
for a chunk of the file. Each of the alternatives is given as
539
If there is a chunk of the file where there's no diagreement,
540
only one alternative is given.
543
# approach: find the included versions common to all the
545
raise NotImplementedError()
549
def _delta(self, included, lines):
550
"""Return changes from basis to new revision.
552
The old text for comparison is the union of included revisions.
554
This is used in inserting a new text.
556
Delta is returned as a sequence of
557
(weave1, weave2, newlines).
559
This indicates that weave1:weave2 of the old weave should be
560
replaced by the sequence of lines in newlines. Note that
561
these line numbers are positions in the total weave and don't
562
correspond to the lines in any extracted version, or even the
563
extracted union of included versions.
565
If line1=line2, this is a pure insert; if newlines=[] this is a
566
pure delete. (Similar to difflib.)
609
raise WeaveFormatError("unclosed deletion blocks at end of weave: %s"
571
612
def plan_merge(self, ver_a, ver_b):
572
613
"""Return pseudo-annotation indicating how the two versions merge.
615
656
yield 'unchanged', '' # terminator
619
def weave_merge(self, plan):
624
for state, line in plan:
625
if state == 'unchanged' or state == 'killed-both':
626
# resync and flush queued conflicts changes if any
627
if not lines_a and not lines_b:
629
elif ch_a and not ch_b:
631
for l in lines_a: yield l
632
elif ch_b and not ch_a:
633
for l in lines_b: yield l
634
elif lines_a == lines_b:
635
for l in lines_a: yield l
658
def _extract(self, versions):
659
"""Yield annotation of lines in included set.
661
Yields a sequence of tuples (origin, lineno, text), where
662
origin is the origin version, lineno the index in the weave,
663
and text the text of the line.
665
The set typically but not necessarily corresponds to a version.
668
if not isinstance(i, int):
671
included = self._inclusions(versions)
677
lineno = 0 # line of weave, 0-based
683
WFE = WeaveFormatError
686
# 449 0 4474.6820 2356.5590 bzrlib.weave:556(_extract)
687
# +285282 0 1676.8040 1676.8040 +<isinstance>
688
# 1.6 seconds in 'isinstance'.
689
# changing the first isinstance:
690
# 449 0 2814.2660 1577.1760 bzrlib.weave:556(_extract)
691
# +140414 0 762.8050 762.8050 +<isinstance>
692
# note that the inline time actually dropped (less function calls)
693
# and total processing time was halved.
694
# we're still spending ~1/4 of the method in isinstance though.
695
# so lets hard code the acceptable string classes we expect:
696
# 449 0 1202.9420 786.2930 bzrlib.weave:556(_extract)
697
# +71352 0 377.5560 377.5560 +<method 'append' of 'list'
699
# yay, down to ~1/4 the initial extract time, and our inline time
700
# has shrunk again, with isinstance no longer dominating.
701
# tweaking the stack inclusion test to use a set gives:
702
# 449 0 1122.8030 713.0080 bzrlib.weave:556(_extract)
703
# +71352 0 354.9980 354.9980 +<method 'append' of 'list'
705
# - a 5% win, or possibly just noise. However with large istacks that
706
# 'in' test could dominate, so I'm leaving this change in place -
707
# when its fast enough to consider profiling big datasets we can review.
712
for l in self._weave:
713
if l.__class__ == tuple:
720
iset.remove(istack.pop())
638
for l in lines_a: yield l
640
for l in lines_b: yield l
647
if state == 'unchanged':
650
elif state == 'killed-a':
653
elif state == 'killed-b':
656
elif state == 'new-a':
659
elif state == 'new-b':
663
assert state in ('irrelevant', 'ghost-a', 'ghost-b', 'killed-base',
674
"""Show some text information about the weave."""
675
print '%6s %40s %20s' % ('ver', 'sha1', 'parents')
676
for i in (6, 40, 20):
728
raise AssertionError()
731
isactive = (not dset) and istack and (istack[-1] in included)
733
result.append((istack[-1], lineno, l))
736
raise WeaveFormatError("unclosed insertion blocks "
737
"at end of weave: %s" % istack)
739
raise WeaveFormatError("unclosed deletion blocks at end of weave: %s"
743
def _maybe_lookup(self, name_or_index):
744
"""Convert possible symbolic name to index, or pass through indexes.
748
if isinstance(name_or_index, (int, long)):
751
return self._lookup(name_or_index)
753
def get_lines(self, version_id):
754
"""See VersionedFile.get_lines()."""
755
int_index = self._maybe_lookup(version_id)
756
result = [line for (origin, lineno, line) in self._extract([int_index])]
757
expected_sha1 = self._sha1s[int_index]
758
measured_sha1 = sha_strings(result)
759
if measured_sha1 != expected_sha1:
760
raise errors.WeaveInvalidChecksum(
761
'file %s, revision %s, expected: %s, measured %s'
762
% (self._weave_name, version_id,
763
expected_sha1, measured_sha1))
766
def get_sha1s(self, version_ids):
767
"""See VersionedFile.get_sha1s()."""
768
return [self._sha1s[self._lookup(v)] for v in version_ids]
770
def num_versions(self):
771
"""How many versions are in this weave?"""
772
l = len(self._parents)
775
__len__ = num_versions
777
def check(self, progress_bar=None):
778
# TODO evaluate performance hit of using string sets in this routine.
779
# TODO: check no circular inclusions
780
# TODO: create a nested progress bar
781
for version in range(self.num_versions()):
782
inclusions = list(self._parents[version])
785
if inclusions[-1] >= version:
786
raise WeaveFormatError("invalid included version %d for index %d"
787
% (inclusions[-1], version))
789
# try extracting all versions; parallel extraction is used
790
nv = self.num_versions()
795
# For creating the ancestry, IntSet is much faster (3.7s vs 0.17s)
796
# The problem is that set membership is much more expensive
797
name = self._idx_to_name(i)
798
sha1s[name] = sha.new()
800
new_inc = set([name])
801
for p in self._parents[i]:
802
new_inc.update(inclusions[self._idx_to_name(p)])
804
if set(new_inc) != set(self.get_ancestry(name)):
805
raise AssertionError(
807
% (set(new_inc), set(self.get_ancestry(name))))
808
inclusions[name] = new_inc
810
nlines = len(self._weave)
812
update_text = 'checking weave'
814
short_name = os.path.basename(self._weave_name)
815
update_text = 'checking %s' % (short_name,)
816
update_text = update_text[:25]
818
for lineno, insert, deleteset, line in self._walk_internal():
820
progress_bar.update(update_text, lineno, nlines)
822
for name, name_inclusions in inclusions.items():
823
# The active inclusion must be an ancestor,
824
# and no ancestors must have deleted this line,
825
# because we don't support resurrection.
826
if (insert in name_inclusions) and not (deleteset & name_inclusions):
827
sha1s[name].update(line)
830
version = self._idx_to_name(i)
831
hd = sha1s[version].hexdigest()
832
expected = self._sha1s[i]
834
raise errors.WeaveInvalidChecksum(
835
"mismatched sha1 for version %s: "
836
"got %s, expected %s"
837
% (version, hd, expected))
839
# TODO: check insertions are properly nested, that there are
840
# no lines outside of insertion blocks, that deletions are
841
# properly paired, etc.
843
def _imported_parents(self, other, other_idx):
844
"""Return list of parents in self corresponding to indexes in other."""
846
for parent_idx in other._parents[other_idx]:
847
parent_name = other._names[parent_idx]
848
if parent_name not in self._name_map:
849
# should not be possible
850
raise WeaveError("missing parent {%s} of {%s} in %r"
851
% (parent_name, other._name_map[other_idx], self))
852
new_parents.append(self._name_map[parent_name])
855
def _check_version_consistent(self, other, other_idx, name):
856
"""Check if a version in consistent in this and other.
858
To be consistent it must have:
861
* the same direct parents (by name, not index, and disregarding
864
If present & correct return True;
865
if not present in self return False;
866
if inconsistent raise error."""
867
this_idx = self._name_map.get(name, -1)
869
if self._sha1s[this_idx] != other._sha1s[other_idx]:
870
raise errors.WeaveTextDiffers(name, self, other)
871
self_parents = self._parents[this_idx]
872
other_parents = other._parents[other_idx]
873
n1 = set([self._names[i] for i in self_parents])
874
n2 = set([other._names[i] for i in other_parents])
875
if not self._compatible_parents(n1, n2):
876
raise WeaveParentMismatch("inconsistent parents "
877
"for version {%s}: %s vs %s" % (name, n1, n2))
883
def _reweave(self, other, pb, msg):
884
"""Reweave self with other - internal helper for join().
886
:param other: The other weave to merge
887
:param pb: An optional progress bar, indicating how far done we are
888
:param msg: An optional message for the progress
890
new_weave = _reweave(self, other, pb=pb, msg=msg)
891
self._copy_weave_content(new_weave)
893
def _copy_weave_content(self, otherweave):
894
"""adsorb the content from otherweave."""
895
for attr in self.__slots__:
896
if attr != '_weave_name':
897
setattr(self, attr, copy(getattr(otherweave, attr)))
900
class WeaveFile(Weave):
901
"""A WeaveFile represents a Weave on disk and writes on change."""
903
WEAVE_SUFFIX = '.weave'
905
def __init__(self, name, transport, filemode=None, create=False, access_mode='w', get_scope=None):
906
"""Create a WeaveFile.
908
:param create: If not True, only open an existing knit.
910
super(WeaveFile, self).__init__(name, access_mode, get_scope=get_scope)
911
self._transport = transport
912
self._filemode = filemode
914
_read_weave_v5(self._transport.get(name + WeaveFile.WEAVE_SUFFIX), self)
915
except errors.NoSuchFile:
921
def _add_lines(self, version_id, parents, lines, parent_texts,
922
left_matching_blocks, nostore_sha, random_id, check_content):
923
"""Add a version and save the weave."""
924
self.check_not_reserved_id(version_id)
925
result = super(WeaveFile, self)._add_lines(version_id, parents, lines,
926
parent_texts, left_matching_blocks, nostore_sha, random_id,
931
def copy_to(self, name, transport):
932
"""See VersionedFile.copy_to()."""
933
# as we are all in memory always, just serialise to the new place.
935
write_weave_v5(self, sio)
937
transport.put_file(name + WeaveFile.WEAVE_SUFFIX, sio, self._filemode)
940
"""Save the weave."""
941
self._check_write_ok()
943
write_weave_v5(self, sio)
945
bytes = sio.getvalue()
946
path = self._weave_name + WeaveFile.WEAVE_SUFFIX
948
self._transport.put_bytes(path, bytes, self._filemode)
949
except errors.NoSuchFile:
950
self._transport.mkdir(dirname(path))
951
self._transport.put_bytes(path, bytes, self._filemode)
955
"""See VersionedFile.get_suffixes()."""
956
return [WeaveFile.WEAVE_SUFFIX]
958
def insert_record_stream(self, stream):
959
super(WeaveFile, self).insert_record_stream(stream)
962
@deprecated_method(one_five)
963
def join(self, other, pb=None, msg=None, version_ids=None,
964
ignore_missing=False):
965
"""Join other into self and save."""
966
super(WeaveFile, self).join(other, pb, msg, version_ids, ignore_missing)
970
def _reweave(wa, wb, pb=None, msg=None):
971
"""Combine two weaves and return the result.
973
This works even if a revision R has different parents in
974
wa and wb. In the resulting weave all the parents are given.
976
This is done by just building up a new weave, maintaining ordering
977
of the versions in the two inputs. More efficient approaches
978
might be possible but it should only be necessary to do
979
this operation rarely, when a new previously ghost version is
982
:param pb: An optional progress bar, indicating how far done we are
983
:param msg: An optional message for the progress
987
queue_a = range(wa.num_versions())
988
queue_b = range(wb.num_versions())
989
# first determine combined parents of all versions
990
# map from version name -> all parent names
991
combined_parents = _reweave_parent_graphs(wa, wb)
992
mutter("combined parents: %r", combined_parents)
993
order = topo_sort(combined_parents.iteritems())
994
mutter("order to reweave: %r", order)
999
for idx, name in enumerate(order):
1001
pb.update(msg, idx, len(order))
1002
if name in wa._name_map:
1003
lines = wa.get_lines(name)
1004
if name in wb._name_map:
1005
lines_b = wb.get_lines(name)
1006
if lines != lines_b:
1007
mutter('Weaves differ on content. rev_id {%s}', name)
1008
mutter('weaves: %s, %s', wa._weave_name, wb._weave_name)
1010
lines = list(difflib.unified_diff(lines, lines_b,
1011
wa._weave_name, wb._weave_name))
1012
mutter('lines:\n%s', ''.join(lines))
1013
raise errors.WeaveTextDiffers(name, wa, wb)
1015
lines = wb.get_lines(name)
1016
wr._add(name, lines, [wr._lookup(i) for i in combined_parents[name]])
1019
def _reweave_parent_graphs(wa, wb):
1020
"""Return combined parent ancestry for two weaves.
1022
Returned as a list of (version_name, set(parent_names))"""
1024
for weave in [wa, wb]:
1025
for idx, name in enumerate(weave._names):
1026
p = combined.setdefault(name, set())
1027
p.update(map(weave._idx_to_name, weave._parents[idx]))
1032
"""Show the weave's table-of-contents"""
1033
print '%6s %50s %10s %10s' % ('ver', 'name', 'sha1', 'parents')
1034
for i in (6, 50, 10, 10):
679
for i in range(w.numversions()):
1037
for i in range(w.num_versions()):
680
1038
sha1 = w._sha1s[i]
681
print '%6d %40s %s' % (i, sha1, ' '.join(map(str, w._parents[i])))
685
def weave_stats(weave_file):
686
from bzrlib.progress import ProgressBar
1040
parent_str = ' '.join(map(str, w._parents[i]))
1041
print '%6d %-50.50s %10.10s %s' % (i, name, sha1, parent_str)
1045
def weave_stats(weave_file, pb):
687
1046
from bzrlib.weavefile import read_weave
691
1048
wf = file(weave_file, 'rb')
692
1049
w = read_weave(wf)
693
1050
# FIXME: doesn't work on pipes
added
removed
bzrlib/weave.py
