224
199
return self._parents == other._parents \
225
200
and self._weave == other._weave \
226
201
and self._sha1s == other._sha1s
228
204
def __ne__(self, other):
229
205
return not self.__eq__(other)
231
@deprecated_method(zero_eight)
232
def idx_to_name(self, index):
233
"""Old public interface, the public interface is all names now."""
236
def _idx_to_name(self, version):
237
return self._names[version]
239
@deprecated_method(zero_eight)
207
def __contains__(self, name):
208
return self._name_map.has_key(name)
210
def maybe_lookup(self, name_or_index):
211
"""Convert possible symbolic name to index, or pass through indexes."""
212
if isinstance(name_or_index, (int, long)):
215
return self.lookup(name_or_index)
240
218
def lookup(self, name):
241
"""Backwards compatibility thunk:
243
Return name, as name is valid in the api now, and spew deprecation
248
def _lookup(self, name):
249
219
"""Convert symbolic version name to index."""
250
self.check_not_reserved_id(name)
252
221
return self._name_map[name]
254
raise RevisionNotPresent(name, self._weave_name)
256
@deprecated_method(zero_eight)
257
def iter_names(self):
258
"""Deprecated convenience function, please see VersionedFile.names()."""
259
return iter(self.names())
261
@deprecated_method(zero_eight)
223
raise WeaveRevisionNotPresent(name, self)
263
"""See Weave.versions for the current api."""
264
return self.versions()
267
"""See VersionedFile.versions."""
268
226
return self._names[:]
270
def has_version(self, version_id):
271
"""See VersionedFile.has_version."""
272
return (version_id in self._name_map)
274
__contains__ = has_version
276
def get_delta(self, version_id):
277
"""See VersionedFile.get_delta."""
278
return self.get_deltas([version_id])[version_id]
280
def get_deltas(self, version_ids):
281
"""See VersionedFile.get_deltas."""
282
version_ids = self.get_ancestry(version_ids)
283
for version_id in version_ids:
284
if not self.has_version(version_id):
285
raise RevisionNotPresent(version_id, self)
286
# try extracting all versions; parallel extraction is used
287
nv = self.num_versions()
293
last_parent_lines = {}
295
parent_inclusions = {}
300
# its simplest to generate a full set of prepared variables.
302
name = self._names[i]
303
sha1s[name] = self.get_sha1(name)
304
parents_list = self.get_parents(name)
306
parent = parents_list[0]
307
parents[name] = parent
308
parent_inclusions[name] = inclusions[parent]
311
parent_inclusions[name] = set()
312
# we want to emit start, finish, replacement_length, replacement_lines tuples.
313
diff_hunks[name] = []
314
current_hunks[name] = [0, 0, 0, []] # #start, finish, repl_length, repl_tuples
315
parent_linenums[name] = 0
317
parent_noeols[name] = False
318
last_parent_lines[name] = None
319
new_inc = set([name])
320
for p in self._parents[i]:
321
new_inc.update(inclusions[self._idx_to_name(p)])
322
# debug only, known good so far.
323
#assert set(new_inc) == set(self.get_ancestry(name)), \
324
# 'failed %s != %s' % (set(new_inc), set(self.get_ancestry(name)))
325
inclusions[name] = new_inc
327
nlines = len(self._weave)
329
for lineno, inserted, deletes, line in self._walk_internal():
330
# a line is active in a version if:
331
# insert is in the versions inclusions
333
# deleteset & the versions inclusions is an empty set.
334
# so - if we have a included by mapping - version is included by
335
# children, we get a list of children to examine for deletes affect
336
# ing them, which is less than the entire set of children.
337
for version_id in version_ids:
338
# The active inclusion must be an ancestor,
339
# and no ancestors must have deleted this line,
340
# because we don't support resurrection.
341
parent_inclusion = parent_inclusions[version_id]
342
inclusion = inclusions[version_id]
343
parent_active = inserted in parent_inclusion and not (deletes & parent_inclusion)
344
version_active = inserted in inclusion and not (deletes & inclusion)
345
if not parent_active and not version_active:
346
# unrelated line of ancestry
348
elif parent_active and version_active:
350
parent_linenum = parent_linenums[version_id]
351
if current_hunks[version_id] != [parent_linenum, parent_linenum, 0, []]:
352
diff_hunks[version_id].append(tuple(current_hunks[version_id]))
354
current_hunks[version_id] = [parent_linenum, parent_linenum, 0, []]
355
parent_linenums[version_id] = parent_linenum
358
noeols[version_id] = True
361
elif parent_active and not version_active:
363
current_hunks[version_id][1] += 1
364
parent_linenums[version_id] += 1
365
last_parent_lines[version_id] = line
366
elif not parent_active and version_active:
368
# noeol only occurs at the end of a file because we
369
# diff linewise. We want to show noeol changes as a
370
# empty diff unless the actual eol-less content changed.
373
if last_parent_lines[version_id][-1] != '\n':
374
parent_noeols[version_id] = True
375
except (TypeError, IndexError):
378
if theline[-1] != '\n':
379
noeols[version_id] = True
383
parent_should_go = False
385
if parent_noeols[version_id] == noeols[version_id]:
386
# no noeol toggle, so trust the weaves statement
387
# that this line is changed.
389
if parent_noeols[version_id]:
390
theline = theline + '\n'
391
elif parent_noeols[version_id]:
392
# parent has no eol, we do:
393
# our line is new, report as such..
395
elif noeols[version_id]:
396
# append a eol so that it looks like
398
theline = theline + '\n'
399
if parents[version_id] is not None:
400
#if last_parent_lines[version_id] is not None:
401
parent_should_go = True
402
if last_parent_lines[version_id] != theline:
405
#parent_should_go = False
407
current_hunks[version_id][2] += 1
408
current_hunks[version_id][3].append((inserted, theline))
410
# last hunk last parent line is not eaten
411
current_hunks[version_id][1] -= 1
412
if current_hunks[version_id][1] < 0:
413
current_hunks[version_id][1] = 0
414
# import pdb;pdb.set_trace()
415
# assert current_hunks[version_id][1] >= 0
419
version = self._idx_to_name(i)
420
if current_hunks[version] != [0, 0, 0, []]:
421
diff_hunks[version].append(tuple(current_hunks[version]))
423
for version_id in version_ids:
424
result[version_id] = (
428
diff_hunks[version_id],
432
def get_parents(self, version_id):
433
"""See VersionedFile.get_parent."""
434
return map(self._idx_to_name, self._parents[self._lookup(version_id)])
228
def iter_names(self):
229
"""Yield a list of all names in this weave."""
230
return iter(self._names)
232
def idx_to_name(self, version):
233
return self._names[version]
436
235
def _check_repeated_add(self, name, parents, text, sha1):
437
236
"""Check that a duplicated add is OK.
439
238
If it is, return the (old) index; otherwise raise an exception.
441
idx = self._lookup(name)
240
idx = self.lookup(name)
442
241
if sorted(self._parents[idx]) != sorted(parents) \
443
242
or sha1 != self._sha1s[idx]:
444
raise RevisionAlreadyPresent(name, self._weave_name)
243
raise WeaveRevisionAlreadyPresent(name, self)
447
@deprecated_method(zero_eight)
448
def add_identical(self, old_rev_id, new_rev_id, parents):
449
"""Please use Weave.clone_text now."""
450
return self.clone_text(new_rev_id, old_rev_id, parents)
452
def _add_lines(self, version_id, parents, lines, parent_texts):
453
"""See VersionedFile.add_lines."""
454
return self._add(version_id, lines, map(self._lookup, parents))
456
@deprecated_method(zero_eight)
457
246
def add(self, name, parents, text, sha1=None):
458
"""See VersionedFile.add_lines for the non deprecated api."""
459
return self._add(name, text, map(self._maybe_lookup, parents), sha1)
461
def _add(self, version_id, lines, parents, sha1=None):
462
247
"""Add a single text on top of the weave.
464
249
Returns the index number of the newly added version.
467
252
Symbolic name for this version.
468
253
(Typically the revision-id of the revision that added it.)
471
256
List or set of direct parent version numbers.
474
259
Sequence of lines to be added in the new version.
261
sha -- SHA-1 of the file, if known. This is trusted to be
477
assert isinstance(version_id, basestring)
478
self._check_lines_not_unicode(lines)
479
self._check_lines_are_lines(lines)
481
sha1 = sha_strings(lines)
482
if version_id in self._name_map:
483
return self._check_repeated_add(version_id, parents, lines, sha1)
264
from bzrlib.osutils import sha_strings
266
assert isinstance(name, basestring)
268
sha1 = sha_strings(text)
269
if name in self._name_map:
270
return self._check_repeated_add(name, parents, text, sha1)
272
parents = map(self.maybe_lookup, parents)
485
273
self._check_versions(parents)
486
## self._check_lines(lines)
274
## self._check_lines(text)
487
275
new_version = len(self._parents)
489
278
# if we abort after here the (in-memory) weave will be corrupt because only
490
279
# some fields are updated
491
# XXX: FIXME implement a succeed-or-fail of the rest of this routine.
492
# - Robert Collins 20060226
493
280
self._parents.append(parents[:])
494
281
self._sha1s.append(sha1)
495
self._names.append(version_id)
496
self._name_map[version_id] = new_version
282
self._names.append(name)
283
self._name_map[name] = new_version
633
436
except IndexError:
634
437
raise IndexError("invalid version number %r" % i)
636
def _compatible_parents(self, my_parents, other_parents):
637
"""During join check that other_parents are joinable with my_parents.
639
Joinable is defined as 'is a subset of' - supersets may require
640
regeneration of diffs, but subsets do not.
642
return len(other_parents.difference(my_parents)) == 0
644
def annotate_iter(self, version_id):
645
"""Yield list of (version-id, line) pairs for the specified version.
440
def annotate(self, name_or_index):
441
return list(self.annotate_iter(name_or_index))
444
def annotate_iter(self, name_or_index):
445
"""Yield list of (index-id, line) pairs for the specified version.
647
447
The index indicates when the line originated in the weave."""
648
incls = [self._lookup(version_id)]
448
incls = [self.maybe_lookup(name_or_index)]
649
449
for origin, lineno, text in self._extract(incls):
650
yield self._idx_to_name(origin), text
652
@deprecated_method(zero_eight)
654
"""_walk has become visit, a supported api."""
655
return self._walk_internal()
657
def iter_lines_added_or_present_in_versions(self, version_ids=None,
659
"""See VersionedFile.iter_lines_added_or_present_in_versions()."""
660
if version_ids is None:
661
version_ids = self.versions()
662
version_ids = set(version_ids)
663
for lineno, inserted, deletes, line in self._walk_internal(version_ids):
664
# if inserted not in version_ids then it was inserted before the
665
# versions we care about, but because weaves cannot represent ghosts
666
# properly, we do not filter down to that
667
# if inserted not in version_ids: continue
673
#@deprecated_method(zero_eight)
674
def walk(self, version_ids=None):
675
"""See VersionedFile.walk."""
676
return self._walk_internal(version_ids)
678
def _walk_internal(self, version_ids=None):
679
"""Helper method for weave actions."""
456
(lineno, insert, deletes, text)
457
for each literal line.
849
@deprecated_method(zero_eight)
850
548
def get_iter(self, name_or_index):
851
"""Deprecated, please do not use. Lookups are not not needed.
853
Please use get_lines now.
855
return iter(self.get_lines(self._maybe_lookup(name_or_index)))
857
@deprecated_method(zero_eight)
858
def maybe_lookup(self, name_or_index):
859
"""Deprecated, please do not use. Lookups are not not needed."""
860
return self._maybe_lookup(name_or_index)
862
def _maybe_lookup(self, name_or_index):
863
"""Convert possible symbolic name to index, or pass through indexes.
867
if isinstance(name_or_index, (int, long)):
870
return self._lookup(name_or_index)
872
@deprecated_method(zero_eight)
873
def get(self, version_id):
874
"""Please use either Weave.get_text or Weave.get_lines as desired."""
875
return self.get_lines(version_id)
877
def get_lines(self, version_id):
878
"""See VersionedFile.get_lines()."""
879
int_index = self._maybe_lookup(version_id)
880
result = [line for (origin, lineno, line) in self._extract([int_index])]
881
expected_sha1 = self._sha1s[int_index]
882
measured_sha1 = sha_strings(result)
883
if measured_sha1 != expected_sha1:
884
raise errors.WeaveInvalidChecksum(
885
'file %s, revision %s, expected: %s, measured %s'
886
% (self._weave_name, version_id,
887
expected_sha1, measured_sha1))
890
def get_sha1(self, version_id):
891
"""See VersionedFile.get_sha1()."""
892
return self._sha1s[self._lookup(version_id)]
894
@deprecated_method(zero_eight)
549
"""Yield lines for the specified version."""
550
incls = [self.maybe_lookup(name_or_index)]
551
for origin, lineno, line in self._extract(incls):
555
def get_text(self, name_or_index):
556
return ''.join(self.get_iter(name_or_index))
557
assert isinstance(version, int)
560
def get_lines(self, name_or_index):
561
return list(self.get_iter(name_or_index))
567
def mash_iter(self, included):
568
"""Return composed version of multiple included versions."""
569
included = map(self.maybe_lookup, included)
570
for origin, lineno, text in self._extract(included):
574
def dump(self, to_file):
575
from pprint import pprint
576
print >>to_file, "Weave._weave = ",
577
pprint(self._weave, to_file)
578
print >>to_file, "Weave._parents = ",
579
pprint(self._parents, to_file)
895
583
def numversions(self):
896
"""How many versions are in this weave?
898
Deprecated in favour of num_versions.
900
return self.num_versions()
902
def num_versions(self):
903
"""How many versions are in this weave?"""
904
584
l = len(self._parents)
905
585
assert l == len(self._sha1s)
908
__len__ = num_versions
590
return self.numversions()
910
593
def check(self, progress_bar=None):
911
# TODO evaluate performance hit of using string sets in this routine.
912
# TODO: check no circular inclusions
913
# TODO: create a nested progress bar
914
for version in range(self.num_versions()):
594
# check no circular inclusions
595
for version in range(self.numversions()):
915
596
inclusions = list(self._parents[version])
917
598
inclusions.sort()
919
600
raise WeaveFormatError("invalid included version %d for index %d"
920
601
% (inclusions[-1], version))
922
# try extracting all versions; parallel extraction is used
923
nv = self.num_versions()
928
# For creating the ancestry, IntSet is much faster (3.7s vs 0.17s)
929
# The problem is that set membership is much more expensive
930
name = self._idx_to_name(i)
931
sha1s[name] = sha.new()
933
new_inc = set([name])
934
for p in self._parents[i]:
935
new_inc.update(inclusions[self._idx_to_name(p)])
937
assert set(new_inc) == set(self.get_ancestry(name)), \
938
'failed %s != %s' % (set(new_inc), set(self.get_ancestry(name)))
939
inclusions[name] = new_inc
941
nlines = len(self._weave)
943
update_text = 'checking weave'
945
short_name = os.path.basename(self._weave_name)
946
update_text = 'checking %s' % (short_name,)
947
update_text = update_text[:25]
949
for lineno, insert, deleteset, line in self._walk_internal():
603
# try extracting all versions; this is a bit slow and parallel
604
# extraction could be used
605
nv = self.numversions()
606
for version in range(nv):
951
progress_bar.update(update_text, lineno, nlines)
953
for name, name_inclusions in inclusions.items():
954
# The active inclusion must be an ancestor,
955
# and no ancestors must have deleted this line,
956
# because we don't support resurrection.
957
if (insert in name_inclusions) and not (deleteset & name_inclusions):
958
sha1s[name].update(line)
961
version = self._idx_to_name(i)
962
hd = sha1s[version].hexdigest()
963
expected = self._sha1s[i]
608
progress_bar.update('checking text', version, nv)
610
for l in self.get_iter(version):
613
expected = self._sha1s[version]
964
614
if hd != expected:
965
raise errors.WeaveInvalidChecksum(
966
"mismatched sha1 for version %s: "
967
"got %s, expected %s"
968
% (version, hd, expected))
615
raise WeaveError("mismatched sha1 for version %d; "
616
"got %s, expected %s"
617
% (version, hd, expected))
970
619
# TODO: check insertions are properly nested, that there are
971
620
# no lines outside of insertion blocks, that deletions are
972
621
# properly paired, etc.
974
def _join(self, other, pb, msg, version_ids, ignore_missing):
975
"""Worker routine for join()."""
976
if not other.versions():
625
def merge(self, merge_versions):
626
"""Automerge and mark conflicts between versions.
628
This returns a sequence, each entry describing alternatives
629
for a chunk of the file. Each of the alternatives is given as
632
If there is a chunk of the file where there's no diagreement,
633
only one alternative is given.
635
# approach: find the included versions common to all the
637
raise NotImplementedError()
641
def _delta(self, included, lines):
642
"""Return changes from basis to new revision.
644
The old text for comparison is the union of included revisions.
646
This is used in inserting a new text.
648
Delta is returned as a sequence of
649
(weave1, weave2, newlines).
651
This indicates that weave1:weave2 of the old weave should be
652
replaced by the sequence of lines in newlines. Note that
653
these line numbers are positions in the total weave and don't
654
correspond to the lines in any extracted version, or even the
655
extracted union of included versions.
657
If line1=line2, this is a pure insert; if newlines=[] this is a
658
pure delete. (Similar to difflib.)
660
raise NotImplementedError()
663
def plan_merge(self, ver_a, ver_b):
664
"""Return pseudo-annotation indicating how the two versions merge.
666
This is computed between versions a and b and their common
669
Weave lines present in none of them are skipped entirely.
671
inc_a = self.inclusions([ver_a])
672
inc_b = self.inclusions([ver_b])
673
inc_c = inc_a & inc_b
675
for lineno, insert, deleteset, line in self._walk():
676
if deleteset & inc_c:
677
# killed in parent; can't be in either a or b
678
# not relevant to our work
679
yield 'killed-base', line
680
elif insert in inc_c:
681
# was inserted in base
682
killed_a = bool(deleteset & inc_a)
683
killed_b = bool(deleteset & inc_b)
684
if killed_a and killed_b:
685
yield 'killed-both', line
687
yield 'killed-a', line
689
yield 'killed-b', line
691
yield 'unchanged', line
692
elif insert in inc_a:
693
if deleteset & inc_a:
694
yield 'ghost-a', line
698
elif insert in inc_b:
699
if deleteset & inc_b:
700
yield 'ghost-b', line
704
# not in either revision
705
yield 'irrelevant', line
707
yield 'unchanged', '' # terminator
711
def weave_merge(self, plan):
716
for state, line in plan:
717
if state == 'unchanged' or state == 'killed-both':
718
# resync and flush queued conflicts changes if any
719
if not lines_a and not lines_b:
721
elif ch_a and not ch_b:
723
for l in lines_a: yield l
724
elif ch_b and not ch_a:
725
for l in lines_b: yield l
726
elif lines_a == lines_b:
727
for l in lines_a: yield l
730
for l in lines_a: yield l
732
for l in lines_b: yield l
739
if state == 'unchanged':
742
elif state == 'killed-a':
745
elif state == 'killed-b':
748
elif state == 'new-a':
751
elif state == 'new-b':
755
assert state in ('irrelevant', 'ghost-a', 'ghost-b', 'killed-base',
760
def join(self, other):
761
"""Integrate versions from other into this weave.
763
The resulting weave contains all the history of both weaves;
764
any version you could retrieve from either self or other can be
765
retrieved from self after this call.
767
It is illegal for the two weaves to contain different values
768
or different parents for any version. See also reweave().
770
if other.numversions() == 0:
977
771
return # nothing to update, easy
980
# versions is never none, InterWeave checks this.
983
772
# two loops so that we do not change ourselves before verifying it
985
774
# work through in index order to make sure we get all dependencies
988
# get the selected versions only that are in other.versions.
989
version_ids = set(other.versions()).intersection(set(version_ids))
990
# pull in the referenced graph.
991
version_ids = other.get_ancestry(version_ids)
992
pending_graph = [(version, other.get_parents(version)) for
993
version in version_ids]
994
for name in topo_sort(pending_graph):
995
other_idx = other._name_map[name]
996
# returns True if we have it, False if we need it.
997
if not self._check_version_consistent(other, other_idx, name):
998
names_to_join.append((other_idx, name))
1007
for other_idx, name in names_to_join:
1008
# TODO: If all the parents of the other version are already
775
for other_idx, name in enumerate(other._names):
776
if self._check_version_consistent(other, other_idx, name):
778
for other_idx, name in enumerate(other._names):
779
# TODO: If all the parents of the other version are already
1009
780
# present then we can avoid some work by just taking the delta
1010
781
# and adjusting the offsets.
1011
782
new_parents = self._imported_parents(other, other_idx)
783
lines = other.get_lines(other_idx)
1012
784
sha1 = other._sha1s[other_idx]
1017
pb.update(msg, merged, len(names_to_join))
1019
lines = other.get_lines(other_idx)
1020
self._add(name, lines, new_parents, sha1)
1022
mutter("merged = %d, processed = %d, file_id=%s; deltat=%d"%(
1023
merged, processed, self._weave_name, time.time()-time0))
785
self.add(name, new_parents, lines, sha1)
1025
788
def _imported_parents(self, other, other_idx):
1026
789
"""Return list of parents in self corresponding to indexes in other."""
1027
790
new_parents = []
1028
791
for parent_idx in other._parents[other_idx]:
1029
792
parent_name = other._names[parent_idx]
1030
if parent_name not in self._name_map:
793
if parent_name not in self._names:
1031
794
# should not be possible
1032
795
raise WeaveError("missing parent {%s} of {%s} in %r"
1033
796
% (parent_name, other._name_map[other_idx], self))
1065
@deprecated_method(zero_eight)
1066
def reweave(self, other, pb=None, msg=None):
1067
"""reweave has been superseded by plain use of join."""
1068
return self.join(other, pb, msg)
1070
def _reweave(self, other, pb, msg):
1071
"""Reweave self with other - internal helper for join().
1073
:param other: The other weave to merge
1074
:param pb: An optional progress bar, indicating how far done we are
1075
:param msg: An optional message for the progress
1077
new_weave = _reweave(self, other, pb=pb, msg=msg)
1078
self._copy_weave_content(new_weave)
1080
def _copy_weave_content(self, otherweave):
1081
"""adsorb the content from otherweave."""
832
def reweave(self, other):
833
"""Reweave self with other."""
834
new_weave = reweave(self, other)
1082
835
for attr in self.__slots__:
1083
if attr != '_weave_name':
1084
setattr(self, attr, copy(getattr(otherweave, attr)))
1087
class WeaveFile(Weave):
1088
"""A WeaveFile represents a Weave on disk and writes on change."""
1090
WEAVE_SUFFIX = '.weave'
1092
def __init__(self, name, transport, filemode=None, create=False, access_mode='w'):
1093
"""Create a WeaveFile.
1095
:param create: If not True, only open an existing knit.
1097
super(WeaveFile, self).__init__(name, access_mode)
1098
self._transport = transport
1099
self._filemode = filemode
1101
_read_weave_v5(self._transport.get(name + WeaveFile.WEAVE_SUFFIX), self)
1102
except errors.NoSuchFile:
1108
def _add_lines(self, version_id, parents, lines, parent_texts):
1109
"""Add a version and save the weave."""
1110
self.check_not_reserved_id(version_id)
1111
result = super(WeaveFile, self)._add_lines(version_id, parents, lines,
1116
def _clone_text(self, new_version_id, old_version_id, parents):
1117
"""See VersionedFile.clone_text."""
1118
super(WeaveFile, self)._clone_text(new_version_id, old_version_id, parents)
1121
def copy_to(self, name, transport):
1122
"""See VersionedFile.copy_to()."""
1123
# as we are all in memory always, just serialise to the new place.
1125
write_weave_v5(self, sio)
1127
transport.put_file(name + WeaveFile.WEAVE_SUFFIX, sio, self._filemode)
1129
def create_empty(self, name, transport, filemode=None):
1130
return WeaveFile(name, transport, filemode, create=True)
1133
"""Save the weave."""
1134
self._check_write_ok()
1136
write_weave_v5(self, sio)
1138
self._transport.put_file(self._weave_name + WeaveFile.WEAVE_SUFFIX,
1144
"""See VersionedFile.get_suffixes()."""
1145
return [WeaveFile.WEAVE_SUFFIX]
1147
def join(self, other, pb=None, msg=None, version_ids=None,
1148
ignore_missing=False):
1149
"""Join other into self and save."""
1150
super(WeaveFile, self).join(other, pb, msg, version_ids, ignore_missing)
1154
@deprecated_function(zero_eight)
1155
def reweave(wa, wb, pb=None, msg=None):
1156
"""reweaving is deprecation, please just use weave.join()."""
1157
_reweave(wa, wb, pb, msg)
1159
def _reweave(wa, wb, pb=None, msg=None):
836
setattr(self, attr, getattr(new_weave, attr))
1160
840
"""Combine two weaves and return the result.
1162
842
This works even if a revision R has different parents in
1167
847
might be possible but it should only be necessary to do
1168
848
this operation rarely, when a new previously ghost version is
1171
:param pb: An optional progress bar, indicating how far done we are
1172
:param msg: An optional message for the progress
1176
queue_a = range(wa.num_versions())
1177
queue_b = range(wb.num_versions())
853
queue_a = range(wa.numversions())
854
queue_b = range(wb.numversions())
1178
855
# first determine combined parents of all versions
1179
856
# map from version name -> all parent names
1180
857
combined_parents = _reweave_parent_graphs(wa, wb)
1181
858
mutter("combined parents: %r", combined_parents)
1182
859
order = topo_sort(combined_parents.iteritems())
1183
860
mutter("order to reweave: %r", order)
1188
for idx, name in enumerate(order):
1190
pb.update(msg, idx, len(order))
1191
862
if name in wa._name_map:
1192
863
lines = wa.get_lines(name)
1193
864
if name in wb._name_map:
1194
lines_b = wb.get_lines(name)
1195
if lines != lines_b:
1196
mutter('Weaves differ on content. rev_id {%s}', name)
1197
mutter('weaves: %s, %s', wa._weave_name, wb._weave_name)
1199
lines = list(difflib.unified_diff(lines, lines_b,
1200
wa._weave_name, wb._weave_name))
1201
mutter('lines:\n%s', ''.join(lines))
1202
raise errors.WeaveTextDiffers(name, wa, wb)
865
assert lines == wb.get_lines(name)
1204
867
lines = wb.get_lines(name)
1205
wr._add(name, lines, [wr._lookup(i) for i in combined_parents[name]])
868
wr.add(name, combined_parents[name], lines)
1208
872
def _reweave_parent_graphs(wa, wb):
1209
873
"""Return combined parent ancestry for two weaves.
1401
1072
print ' '.join(map(str, w._parents[int(argv[3])]))
1403
1074
elif cmd == 'plan-merge':
1404
# replaced by 'bzr weave-plan-merge'
1406
1076
for state, line in w.plan_merge(int(argv[3]), int(argv[4])):
1408
1078
print '%14s | %s' % (state, line),
1409
1080
elif cmd == 'merge':
1410
# replaced by 'bzr weave-merge-text'
1412
1082
p = w.plan_merge(int(argv[3]), int(argv[4]))
1413
1083
sys.stdout.writelines(w.weave_merge(p))
1085
elif cmd == 'mash-merge':
1091
v1, v2 = map(int, argv[3:5])
1093
basis = w.inclusions([v1]).intersection(w.inclusions([v2]))
1095
base_lines = list(w.mash_iter(basis))
1096
a_lines = list(w.get(v1))
1097
b_lines = list(w.get(v2))
1099
from bzrlib.merge3 import Merge3
1100
m3 = Merge3(base_lines, a_lines, b_lines)
1102
name_a = 'version %d' % v1
1103
name_b = 'version %d' % v2
1104
sys.stdout.writelines(m3.merge_lines(name_a=name_a, name_b=name_b))
1415
1106
raise ValueError('unknown command %r' % cmd)
1110
def profile_main(argv):
1111
import tempfile, hotshot, hotshot.stats
1113
prof_f = tempfile.NamedTemporaryFile()
1115
prof = hotshot.Profile(prof_f.name)
1117
ret = prof.runcall(main, argv)
1120
stats = hotshot.stats.load(prof_f.name)
1122
stats.sort_stats('cumulative')
1123
## XXX: Might like to write to stderr or the trace file instead but
1124
## print_stats seems hardcoded to stdout
1125
stats.print_stats(20)
1418
1130
if __name__ == '__main__':
1420
sys.exit(main(sys.argv))
1423
class InterWeave(InterVersionedFile):
1424
"""Optimised code paths for weave to weave operations."""
1426
_matching_file_from_factory = staticmethod(WeaveFile)
1427
_matching_file_to_factory = staticmethod(WeaveFile)
1430
def is_compatible(source, target):
1431
"""Be compatible with weaves."""
1433
return (isinstance(source, Weave) and
1434
isinstance(target, Weave))
1435
except AttributeError:
1438
def join(self, pb=None, msg=None, version_ids=None, ignore_missing=False):
1439
"""See InterVersionedFile.join."""
1440
version_ids = self._get_source_version_ids(version_ids, ignore_missing)
1441
if self.target.versions() == [] and version_ids is None:
1442
self.target._copy_weave_content(self.source)
1445
self.target._join(self.source, pb, msg, version_ids, ignore_missing)
1446
except errors.WeaveParentMismatch:
1447
self.target._reweave(self.source, pb, msg)
1450
InterVersionedFile.register_optimiser(InterWeave)
1132
if '--profile' in sys.argv:
1134
args.remove('--profile')
1135
sys.exit(profile_main(args))
1137
sys.exit(main(sys.argv))
added
removed
bzrlib/weave.py
