199
221
return self._parents == other._parents \
200
222
and self._weave == other._weave \
201
223
and self._sha1s == other._sha1s
204
225
def __ne__(self, other):
205
226
return not self.__eq__(other)
228
@deprecated_method(zero_eight)
229
def idx_to_name(self, index):
230
"""Old public interface, the public interface is all names now."""
233
def _idx_to_name(self, version):
234
return self._names[version]
236
@deprecated_method(zero_eight)
208
237
def lookup(self, name):
238
"""Backwards compatibility thunk:
240
Return name, as name is valid in the api now, and spew deprecation
245
def _lookup(self, name):
246
"""Convert symbolic version name to index."""
210
248
return self._name_map[name]
212
raise WeaveError("name %s not present in weave" % name)
215
def add(self, name, parents, text):
250
raise RevisionNotPresent(name, self._weave_name)
252
@deprecated_method(zero_eight)
253
def iter_names(self):
254
"""Deprecated convenience function, please see VersionedFile.names()."""
255
return iter(self.names())
257
@deprecated_method(zero_eight)
259
"""See Weave.versions for the current api."""
260
return self.versions()
263
"""See VersionedFile.versions."""
264
return self._names[:]
266
def has_version(self, version_id):
267
"""See VersionedFile.has_version."""
268
return self._name_map.has_key(version_id)
270
__contains__ = has_version
272
def get_delta(self, version_id):
273
"""See VersionedFile.get_delta."""
274
return self.get_deltas([version_id])[version_id]
276
def get_deltas(self, version_ids):
277
"""See VersionedFile.get_deltas."""
278
version_ids = self.get_ancestry(version_ids)
279
for version_id in version_ids:
280
if not self.has_version(version_id):
281
raise RevisionNotPresent(version_id, self)
282
# try extracting all versions; parallel extraction is used
283
nv = self.num_versions()
289
last_parent_lines = {}
291
parent_inclusions = {}
296
# its simplest to generate a full set of prepared variables.
298
name = self._names[i]
299
sha1s[name] = self.get_sha1(name)
300
parents_list = self.get_parents(name)
302
parent = parents_list[0]
303
parents[name] = parent
304
parent_inclusions[name] = inclusions[parent]
307
parent_inclusions[name] = set()
308
# we want to emit start, finish, replacement_length, replacement_lines tuples.
309
diff_hunks[name] = []
310
current_hunks[name] = [0, 0, 0, []] # #start, finish, repl_length, repl_tuples
311
parent_linenums[name] = 0
313
parent_noeols[name] = False
314
last_parent_lines[name] = None
315
new_inc = set([name])
316
for p in self._parents[i]:
317
new_inc.update(inclusions[self._idx_to_name(p)])
318
# debug only, known good so far.
319
#assert set(new_inc) == set(self.get_ancestry(name)), \
320
# 'failed %s != %s' % (set(new_inc), set(self.get_ancestry(name)))
321
inclusions[name] = new_inc
323
nlines = len(self._weave)
325
for lineno, inserted, deletes, line in self._walk_internal():
326
# a line is active in a version if:
327
# insert is in the versions inclusions
329
# deleteset & the versions inclusions is an empty set.
330
# so - if we have a included by mapping - version is included by
331
# children, we get a list of children to examine for deletes affect
332
# ing them, which is less than the entire set of children.
333
for version_id in version_ids:
334
# The active inclusion must be an ancestor,
335
# and no ancestors must have deleted this line,
336
# because we don't support resurrection.
337
parent_inclusion = parent_inclusions[version_id]
338
inclusion = inclusions[version_id]
339
parent_active = inserted in parent_inclusion and not (deletes & parent_inclusion)
340
version_active = inserted in inclusion and not (deletes & inclusion)
341
if not parent_active and not version_active:
342
# unrelated line of ancestry
344
elif parent_active and version_active:
346
parent_linenum = parent_linenums[version_id]
347
if current_hunks[version_id] != [parent_linenum, parent_linenum, 0, []]:
348
diff_hunks[version_id].append(tuple(current_hunks[version_id]))
350
current_hunks[version_id] = [parent_linenum, parent_linenum, 0, []]
351
parent_linenums[version_id] = parent_linenum
354
noeols[version_id] = True
357
elif parent_active and not version_active:
359
current_hunks[version_id][1] += 1
360
parent_linenums[version_id] += 1
361
last_parent_lines[version_id] = line
362
elif not parent_active and version_active:
364
# noeol only occurs at the end of a file because we
365
# diff linewise. We want to show noeol changes as a
366
# empty diff unless the actual eol-less content changed.
369
if last_parent_lines[version_id][-1] != '\n':
370
parent_noeols[version_id] = True
371
except (TypeError, IndexError):
374
if theline[-1] != '\n':
375
noeols[version_id] = True
379
parent_should_go = False
381
if parent_noeols[version_id] == noeols[version_id]:
382
# no noeol toggle, so trust the weaves statement
383
# that this line is changed.
385
if parent_noeols[version_id]:
386
theline = theline + '\n'
387
elif parent_noeols[version_id]:
388
# parent has no eol, we do:
389
# our line is new, report as such..
391
elif noeols[version_id]:
392
# append a eol so that it looks like
394
theline = theline + '\n'
395
if parents[version_id] is not None:
396
#if last_parent_lines[version_id] is not None:
397
parent_should_go = True
398
if last_parent_lines[version_id] != theline:
401
#parent_should_go = False
403
current_hunks[version_id][2] += 1
404
current_hunks[version_id][3].append((inserted, theline))
406
# last hunk last parent line is not eaten
407
current_hunks[version_id][1] -= 1
408
if current_hunks[version_id][1] < 0:
409
current_hunks[version_id][1] = 0
410
# import pdb;pdb.set_trace()
411
# assert current_hunks[version_id][1] >= 0
415
version = self._idx_to_name(i)
416
if current_hunks[version] != [0, 0, 0, []]:
417
diff_hunks[version].append(tuple(current_hunks[version]))
419
for version_id in version_ids:
420
result[version_id] = (
424
diff_hunks[version_id],
428
def get_parents(self, version_id):
429
"""See VersionedFile.get_parent."""
430
return map(self._idx_to_name, self._parents[self._lookup(version_id)])
432
def _check_repeated_add(self, name, parents, text, sha1):
433
"""Check that a duplicated add is OK.
435
If it is, return the (old) index; otherwise raise an exception.
437
idx = self._lookup(name)
438
if sorted(self._parents[idx]) != sorted(parents) \
439
or sha1 != self._sha1s[idx]:
440
raise RevisionAlreadyPresent(name, self._weave_name)
443
@deprecated_method(zero_eight)
444
def add_identical(self, old_rev_id, new_rev_id, parents):
445
"""Please use Weave.clone_text now."""
446
return self.clone_text(new_rev_id, old_rev_id, parents)
448
def _add_lines(self, version_id, parents, lines, parent_texts):
449
"""See VersionedFile.add_lines."""
450
return self._add(version_id, lines, map(self._lookup, parents))
452
@deprecated_method(zero_eight)
453
def add(self, name, parents, text, sha1=None):
454
"""See VersionedFile.add_lines for the non deprecated api."""
455
return self._add(name, text, map(self._maybe_lookup, parents), sha1)
457
def _add(self, version_id, lines, parents, sha1=None):
216
458
"""Add a single text on top of the weave.
218
460
Returns the index number of the newly added version.
221
463
Symbolic name for this version.
222
464
(Typically the revision-id of the revision that added it.)
225
467
List or set of direct parent version numbers.
228
Sequence of lines to be added in the new version."""
230
assert isinstance(name, basestring)
231
if name in self._name_map:
232
raise WeaveError("name %r already present in weave" % name)
470
Sequence of lines to be added in the new version.
473
assert isinstance(version_id, basestring)
474
self._check_lines_not_unicode(lines)
475
self._check_lines_are_lines(lines)
477
sha1 = sha_strings(lines)
478
if version_id in self._name_map:
479
return self._check_repeated_add(version_id, parents, lines, sha1)
234
481
self._check_versions(parents)
235
## self._check_lines(text)
482
## self._check_lines(lines)
236
483
new_version = len(self._parents)
243
485
# if we abort after here the (in-memory) weave will be corrupt because only
244
486
# some fields are updated
487
# XXX: FIXME implement a succeed-or-fail of the rest of this routine.
488
# - Robert Collins 20060226
245
489
self._parents.append(parents[:])
246
490
self._sha1s.append(sha1)
247
self._names.append(name)
248
self._name_map[name] = new_version
491
self._names.append(version_id)
492
self._name_map[version_id] = new_version
392
629
except IndexError:
393
630
raise IndexError("invalid version number %r" % i)
632
def _compatible_parents(self, my_parents, other_parents):
633
"""During join check that other_parents are joinable with my_parents.
635
Joinable is defined as 'is a subset of' - supersets may require
636
regeneration of diffs, but subsets do not.
638
return len(other_parents.difference(my_parents)) == 0
640
def annotate(self, version_id):
641
if isinstance(version_id, int):
642
warnings.warn('Weave.annotate(int) is deprecated. Please use version names'
643
' in all circumstances as of 0.8',
648
for origin, lineno, text in self._extract([version_id]):
649
result.append((origin, text))
652
return super(Weave, self).annotate(version_id)
396
def annotate(self, index):
397
return list(self.annotate_iter(index))
400
def annotate_iter(self, version):
401
"""Yield list of (index-id, line) pairs for the specified version.
654
def annotate_iter(self, version_id):
655
"""Yield list of (version-id, line) pairs for the specified version.
403
657
The index indicates when the line originated in the weave."""
404
for origin, lineno, text in self._extract([version]):
658
incls = [self._lookup(version_id)]
659
for origin, lineno, text in self._extract(incls):
660
yield self._idx_to_name(origin), text
662
@deprecated_method(zero_eight)
412
(lineno, insert, deletes, text)
413
for each literal line.
664
"""_walk has become visit, a supported api."""
665
return self._walk_internal()
667
def iter_lines_added_or_present_in_versions(self, version_ids=None):
668
"""See VersionedFile.iter_lines_added_or_present_in_versions()."""
669
if version_ids is None:
670
version_ids = self.versions()
671
version_ids = set(version_ids)
672
for lineno, inserted, deletes, line in self._walk_internal(version_ids):
673
# if inserted not in version_ids then it was inserted before the
674
# versions we care about, but because weaves cannot represent ghosts
675
# properly, we do not filter down to that
676
# if inserted not in version_ids: continue
682
#@deprecated_method(zero_eight)
683
def walk(self, version_ids=None):
684
"""See VersionedFile.walk."""
685
return self._walk_internal(version_ids)
687
def _walk_internal(self, version_ids=None):
688
"""Helper method for weave actions."""
486
assert isinstance(l, basestring)
844
assert l.__class__ in (str, unicode)
487
845
if isactive is None:
488
846
isactive = (not dset) and istack and (istack[-1] in included)
490
848
result.append((istack[-1], lineno, l))
494
raise WFE("unclosed insertion blocks at end of weave",
851
raise WeaveFormatError("unclosed insertion blocks "
852
"at end of weave: %s" % istack)
497
raise WFE("unclosed deletion blocks at end of weave",
504
def get_iter(self, version):
505
"""Yield lines for the specified version."""
506
for origin, lineno, line in self._extract([version]):
510
def get(self, index):
511
return list(self.get_iter(index))
514
def mash_iter(self, included):
515
"""Return composed version of multiple included versions."""
516
for origin, lineno, text in self._extract(included):
520
def dump(self, to_file):
521
from pprint import pprint
522
print >>to_file, "Weave._weave = ",
523
pprint(self._weave, to_file)
524
print >>to_file, "Weave._parents = ",
525
pprint(self._parents, to_file)
854
raise WeaveFormatError("unclosed deletion blocks at end of weave: %s"
858
@deprecated_method(zero_eight)
859
def get_iter(self, name_or_index):
860
"""Deprecated, please do not use. Lookups are not not needed.
862
Please use get_lines now.
864
return iter(self.get_lines(self._maybe_lookup(name_or_index)))
866
@deprecated_method(zero_eight)
867
def maybe_lookup(self, name_or_index):
868
"""Deprecated, please do not use. Lookups are not not needed."""
869
return self._maybe_lookup(name_or_index)
871
def _maybe_lookup(self, name_or_index):
872
"""Convert possible symbolic name to index, or pass through indexes.
876
if isinstance(name_or_index, (int, long)):
879
return self._lookup(name_or_index)
881
@deprecated_method(zero_eight)
882
def get(self, version_id):
883
"""Please use either Weave.get_text or Weave.get_lines as desired."""
884
return self.get_lines(version_id)
886
def get_lines(self, version_id):
887
"""See VersionedFile.get_lines()."""
888
int_index = self._maybe_lookup(version_id)
889
result = [line for (origin, lineno, line) in self._extract([int_index])]
890
expected_sha1 = self._sha1s[int_index]
891
measured_sha1 = sha_strings(result)
892
if measured_sha1 != expected_sha1:
893
raise errors.WeaveInvalidChecksum(
894
'file %s, revision %s, expected: %s, measured %s'
895
% (self._weave_name, version_id,
896
expected_sha1, measured_sha1))
899
def get_sha1(self, version_id):
900
"""See VersionedFile.get_sha1()."""
901
return self._sha1s[self._lookup(version_id)]
903
@deprecated_method(zero_eight)
529
904
def numversions(self):
905
"""How many versions are in this weave?
907
Deprecated in favour of num_versions.
909
return self.num_versions()
911
def num_versions(self):
912
"""How many versions are in this weave?"""
530
913
l = len(self._parents)
531
914
assert l == len(self._sha1s)
536
return self.numversions()
917
__len__ = num_versions
539
919
def check(self, progress_bar=None):
540
# check no circular inclusions
541
for version in range(self.numversions()):
920
# TODO evaluate performance hit of using string sets in this routine.
921
# TODO: check no circular inclusions
922
# TODO: create a nested progress bar
923
for version in range(self.num_versions()):
542
924
inclusions = list(self._parents[version])
544
926
inclusions.sort()
546
928
raise WeaveFormatError("invalid included version %d for index %d"
547
929
% (inclusions[-1], version))
549
# try extracting all versions; this is a bit slow and parallel
550
# extraction could be used
551
nv = self.numversions()
552
for version in range(nv):
931
# try extracting all versions; parallel extraction is used
932
nv = self.num_versions()
937
# For creating the ancestry, IntSet is much faster (3.7s vs 0.17s)
938
# The problem is that set membership is much more expensive
939
name = self._idx_to_name(i)
940
sha1s[name] = sha.new()
942
new_inc = set([name])
943
for p in self._parents[i]:
944
new_inc.update(inclusions[self._idx_to_name(p)])
946
assert set(new_inc) == set(self.get_ancestry(name)), \
947
'failed %s != %s' % (set(new_inc), set(self.get_ancestry(name)))
948
inclusions[name] = new_inc
950
nlines = len(self._weave)
952
update_text = 'checking weave'
954
short_name = os.path.basename(self._weave_name)
955
update_text = 'checking %s' % (short_name,)
956
update_text = update_text[:25]
958
for lineno, insert, deleteset, line in self._walk_internal():
554
progress_bar.update('checking text', version, nv)
556
for l in self.get_iter(version):
559
expected = self._sha1s[version]
960
progress_bar.update(update_text, lineno, nlines)
962
for name, name_inclusions in inclusions.items():
963
# The active inclusion must be an ancestor,
964
# and no ancestors must have deleted this line,
965
# because we don't support resurrection.
966
if (insert in name_inclusions) and not (deleteset & name_inclusions):
967
sha1s[name].update(line)
970
version = self._idx_to_name(i)
971
hd = sha1s[version].hexdigest()
972
expected = self._sha1s[i]
560
973
if hd != expected:
561
raise WeaveError("mismatched sha1 for version %d; "
562
"got %s, expected %s"
563
% (version, hd, expected))
974
raise errors.WeaveInvalidChecksum(
975
"mismatched sha1 for version %s: "
976
"got %s, expected %s"
977
% (version, hd, expected))
565
979
# TODO: check insertions are properly nested, that there are
566
980
# no lines outside of insertion blocks, that deletions are
567
981
# properly paired, etc.
571
def merge(self, merge_versions):
572
"""Automerge and mark conflicts between versions.
574
This returns a sequence, each entry describing alternatives
575
for a chunk of the file. Each of the alternatives is given as
578
If there is a chunk of the file where there's no diagreement,
579
only one alternative is given.
582
# approach: find the included versions common to all the
584
raise NotImplementedError()
588
def _delta(self, included, lines):
589
"""Return changes from basis to new revision.
591
The old text for comparison is the union of included revisions.
593
This is used in inserting a new text.
595
Delta is returned as a sequence of
596
(weave1, weave2, newlines).
598
This indicates that weave1:weave2 of the old weave should be
599
replaced by the sequence of lines in newlines. Note that
600
these line numbers are positions in the total weave and don't
601
correspond to the lines in any extracted version, or even the
602
extracted union of included versions.
604
If line1=line2, this is a pure insert; if newlines=[] this is a
605
pure delete. (Similar to difflib.)
610
def plan_merge(self, ver_a, ver_b):
611
"""Return pseudo-annotation indicating how the two versions merge.
613
This is computed between versions a and b and their common
616
Weave lines present in none of them are skipped entirely.
618
inc_a = self.inclusions([ver_a])
619
inc_b = self.inclusions([ver_b])
620
inc_c = inc_a & inc_b
622
for lineno, insert, deleteset, line in self._walk():
623
if deleteset & inc_c:
624
# killed in parent; can't be in either a or b
625
# not relevant to our work
626
yield 'killed-base', line
627
elif insert in inc_c:
628
# was inserted in base
629
killed_a = bool(deleteset & inc_a)
630
killed_b = bool(deleteset & inc_b)
631
if killed_a and killed_b:
632
yield 'killed-both', line
634
yield 'killed-a', line
636
yield 'killed-b', line
638
yield 'unchanged', line
639
elif insert in inc_a:
640
if deleteset & inc_a:
641
yield 'ghost-a', line
645
elif insert in inc_b:
646
if deleteset & inc_b:
647
yield 'ghost-b', line
651
# not in either revision
652
yield 'irrelevant', line
654
yield 'unchanged', '' # terminator
658
def weave_merge(self, plan):
663
for state, line in plan:
664
if state == 'unchanged' or state == 'killed-both':
665
# resync and flush queued conflicts changes if any
666
if not lines_a and not lines_b:
668
elif ch_a and not ch_b:
670
for l in lines_a: yield l
671
elif ch_b and not ch_a:
672
for l in lines_b: yield l
673
elif lines_a == lines_b:
674
for l in lines_a: yield l
677
for l in lines_a: yield l
679
for l in lines_b: yield l
686
if state == 'unchanged':
689
elif state == 'killed-a':
692
elif state == 'killed-b':
695
elif state == 'new-a':
698
elif state == 'new-b':
702
assert state in ('irrelevant', 'ghost-a', 'ghost-b', 'killed-base',
983
def _join(self, other, pb, msg, version_ids, ignore_missing):
984
"""Worker routine for join()."""
985
if not other.versions():
986
return # nothing to update, easy
989
# versions is never none, InterWeave checks this.
992
# two loops so that we do not change ourselves before verifying it
994
# work through in index order to make sure we get all dependencies
997
# get the selected versions only that are in other.versions.
998
version_ids = set(other.versions()).intersection(set(version_ids))
999
# pull in the referenced graph.
1000
version_ids = other.get_ancestry(version_ids)
1001
pending_graph = [(version, other.get_parents(version)) for
1002
version in version_ids]
1003
for name in topo_sort(pending_graph):
1004
other_idx = other._name_map[name]
1005
# returns True if we have it, False if we need it.
1006
if not self._check_version_consistent(other, other_idx, name):
1007
names_to_join.append((other_idx, name))
1016
for other_idx, name in names_to_join:
1017
# TODO: If all the parents of the other version are already
1018
# present then we can avoid some work by just taking the delta
1019
# and adjusting the offsets.
1020
new_parents = self._imported_parents(other, other_idx)
1021
sha1 = other._sha1s[other_idx]
1026
pb.update(msg, merged, len(names_to_join))
1028
lines = other.get_lines(other_idx)
1029
self._add(name, lines, new_parents, sha1)
1031
mutter("merged = %d, processed = %d, file_id=%s; deltat=%d"%(
1032
merged, processed, self._weave_name, time.time()-time0))
1034
def _imported_parents(self, other, other_idx):
1035
"""Return list of parents in self corresponding to indexes in other."""
1037
for parent_idx in other._parents[other_idx]:
1038
parent_name = other._names[parent_idx]
1039
if parent_name not in self._name_map:
1040
# should not be possible
1041
raise WeaveError("missing parent {%s} of {%s} in %r"
1042
% (parent_name, other._name_map[other_idx], self))
1043
new_parents.append(self._name_map[parent_name])
1046
def _check_version_consistent(self, other, other_idx, name):
1047
"""Check if a version in consistent in this and other.
1049
To be consistent it must have:
1052
* the same direct parents (by name, not index, and disregarding
1055
If present & correct return True;
1056
if not present in self return False;
1057
if inconsistent raise error."""
1058
this_idx = self._name_map.get(name, -1)
1060
if self._sha1s[this_idx] != other._sha1s[other_idx]:
1061
raise errors.WeaveTextDiffers(name, self, other)
1062
self_parents = self._parents[this_idx]
1063
other_parents = other._parents[other_idx]
1064
n1 = set([self._names[i] for i in self_parents])
1065
n2 = set([other._names[i] for i in other_parents])
1066
if not self._compatible_parents(n1, n2):
1067
raise WeaveParentMismatch("inconsistent parents "
1068
"for version {%s}: %s vs %s" % (name, n1, n2))
1074
@deprecated_method(zero_eight)
1075
def reweave(self, other, pb=None, msg=None):
1076
"""reweave has been superseded by plain use of join."""
1077
return self.join(other, pb, msg)
1079
def _reweave(self, other, pb, msg):
1080
"""Reweave self with other - internal helper for join().
1082
:param other: The other weave to merge
1083
:param pb: An optional progress bar, indicating how far done we are
1084
:param msg: An optional message for the progress
1086
new_weave = _reweave(self, other, pb=pb, msg=msg)
1087
self._copy_weave_content(new_weave)
1089
def _copy_weave_content(self, otherweave):
1090
"""adsorb the content from otherweave."""
1091
for attr in self.__slots__:
1092
if attr != '_weave_name':
1093
setattr(self, attr, copy(getattr(otherweave, attr)))
1096
class WeaveFile(Weave):
1097
"""A WeaveFile represents a Weave on disk and writes on change."""
1099
WEAVE_SUFFIX = '.weave'
1101
def __init__(self, name, transport, filemode=None, create=False, access_mode='w'):
1102
"""Create a WeaveFile.
1104
:param create: If not True, only open an existing knit.
1106
super(WeaveFile, self).__init__(name, access_mode)
1107
self._transport = transport
1108
self._filemode = filemode
1110
_read_weave_v5(self._transport.get(name + WeaveFile.WEAVE_SUFFIX), self)
1111
except errors.NoSuchFile:
1117
def _add_lines(self, version_id, parents, lines, parent_texts):
1118
"""Add a version and save the weave."""
1119
result = super(WeaveFile, self)._add_lines(version_id, parents, lines,
1124
def _clone_text(self, new_version_id, old_version_id, parents):
1125
"""See VersionedFile.clone_text."""
1126
super(WeaveFile, self)._clone_text(new_version_id, old_version_id, parents)
1129
def copy_to(self, name, transport):
1130
"""See VersionedFile.copy_to()."""
1131
# as we are all in memory always, just serialise to the new place.
1133
write_weave_v5(self, sio)
1135
transport.put(name + WeaveFile.WEAVE_SUFFIX, sio, self._filemode)
1137
def create_empty(self, name, transport, filemode=None):
1138
return WeaveFile(name, transport, filemode, create=True)
1141
"""Save the weave."""
1142
self._check_write_ok()
1144
write_weave_v5(self, sio)
1146
self._transport.put(self._weave_name + WeaveFile.WEAVE_SUFFIX,
1152
"""See VersionedFile.get_suffixes()."""
1153
return [WeaveFile.WEAVE_SUFFIX]
1155
def join(self, other, pb=None, msg=None, version_ids=None,
1156
ignore_missing=False):
1157
"""Join other into self and save."""
1158
super(WeaveFile, self).join(other, pb, msg, version_ids, ignore_missing)
1162
@deprecated_function(zero_eight)
1163
def reweave(wa, wb, pb=None, msg=None):
1164
"""reweaving is deprecation, please just use weave.join()."""
1165
_reweave(wa, wb, pb, msg)
1167
def _reweave(wa, wb, pb=None, msg=None):
1168
"""Combine two weaves and return the result.
1170
This works even if a revision R has different parents in
1171
wa and wb. In the resulting weave all the parents are given.
1173
This is done by just building up a new weave, maintaining ordering
1174
of the versions in the two inputs. More efficient approaches
1175
might be possible but it should only be necessary to do
1176
this operation rarely, when a new previously ghost version is
1179
:param pb: An optional progress bar, indicating how far done we are
1180
:param msg: An optional message for the progress
1184
queue_a = range(wa.num_versions())
1185
queue_b = range(wb.num_versions())
1186
# first determine combined parents of all versions
1187
# map from version name -> all parent names
1188
combined_parents = _reweave_parent_graphs(wa, wb)
1189
mutter("combined parents: %r", combined_parents)
1190
order = topo_sort(combined_parents.iteritems())
1191
mutter("order to reweave: %r", order)
1196
for idx, name in enumerate(order):
1198
pb.update(msg, idx, len(order))
1199
if name in wa._name_map:
1200
lines = wa.get_lines(name)
1201
if name in wb._name_map:
1202
lines_b = wb.get_lines(name)
1203
if lines != lines_b:
1204
mutter('Weaves differ on content. rev_id {%s}', name)
1205
mutter('weaves: %s, %s', wa._weave_name, wb._weave_name)
1207
lines = list(difflib.unified_diff(lines, lines_b,
1208
wa._weave_name, wb._weave_name))
1209
mutter('lines:\n%s', ''.join(lines))
1210
raise errors.WeaveTextDiffers(name, wa, wb)
1212
lines = wb.get_lines(name)
1213
wr._add(name, lines, [wr._lookup(i) for i in combined_parents[name]])
1216
def _reweave_parent_graphs(wa, wb):
1217
"""Return combined parent ancestry for two weaves.
1219
Returned as a list of (version_name, set(parent_names))"""
1221
for weave in [wa, wb]:
1222
for idx, name in enumerate(weave._names):
1223
p = combined.setdefault(name, set())
1224
p.update(map(weave._idx_to_name, weave._parents[idx]))
712
1228
def weave_toc(w):
883
1409
print ' '.join(map(str, w._parents[int(argv[3])]))
885
1411
elif cmd == 'plan-merge':
1412
# replaced by 'bzr weave-plan-merge'
887
1414
for state, line in w.plan_merge(int(argv[3]), int(argv[4])):
889
1416
print '%14s | %s' % (state, line),
891
1417
elif cmd == 'merge':
1418
# replaced by 'bzr weave-merge-text'
893
1420
p = w.plan_merge(int(argv[3]), int(argv[4]))
894
1421
sys.stdout.writelines(w.weave_merge(p))
896
elif cmd == 'mash-merge':
902
v1, v2 = map(int, argv[3:5])
904
basis = w.inclusions([v1]).intersection(w.inclusions([v2]))
906
base_lines = list(w.mash_iter(basis))
907
a_lines = list(w.get(v1))
908
b_lines = list(w.get(v2))
910
from bzrlib.merge3 import Merge3
911
m3 = Merge3(base_lines, a_lines, b_lines)
913
name_a = 'version %d' % v1
914
name_b = 'version %d' % v2
915
sys.stdout.writelines(m3.merge_lines(name_a=name_a, name_b=name_b))
917
1423
raise ValueError('unknown command %r' % cmd)
921
def profile_main(argv):
922
import tempfile, hotshot, hotshot.stats
924
prof_f = tempfile.NamedTemporaryFile()
926
prof = hotshot.Profile(prof_f.name)
928
ret = prof.runcall(main, argv)
931
stats = hotshot.stats.load(prof_f.name)
933
stats.sort_stats('cumulative')
934
## XXX: Might like to write to stderr or the trace file instead but
935
## print_stats seems hardcoded to stdout
936
stats.print_stats(20)
941
1426
if __name__ == '__main__':
943
if '--profile' in sys.argv:
945
args.remove('--profile')
946
sys.exit(profile_main(args))
948
sys.exit(main(sys.argv))
1428
sys.exit(main(sys.argv))
1431
class InterWeave(InterVersionedFile):
1432
"""Optimised code paths for weave to weave operations."""
1434
_matching_file_from_factory = staticmethod(WeaveFile)
1435
_matching_file_to_factory = staticmethod(WeaveFile)
1438
def is_compatible(source, target):
1439
"""Be compatible with weaves."""
1441
return (isinstance(source, Weave) and
1442
isinstance(target, Weave))
1443
except AttributeError:
1446
def join(self, pb=None, msg=None, version_ids=None, ignore_missing=False):
1447
"""See InterVersionedFile.join."""
1448
version_ids = self._get_source_version_ids(version_ids, ignore_missing)
1449
if self.target.versions() == [] and version_ids is None:
1450
self.target._copy_weave_content(self.source)
1453
self.target._join(self.source, pb, msg, version_ids, ignore_missing)
1454
except errors.WeaveParentMismatch:
1455
self.target._reweave(self.source, pb, msg)
1458
InterVersionedFile.register_optimiser(InterWeave)
added
removed
bzrlib/weave.py
