213
199
return self._parents == other._parents \
214
200
and self._weave == other._weave \
215
201
and self._sha1s == other._sha1s
217
204
def __ne__(self, other):
218
205
return not self.__eq__(other)
220
@deprecated_method(zero_eight)
221
def idx_to_name(self, index):
222
"""Old public interface, the public interface is all names now."""
225
def _idx_to_name(self, version):
226
return self._names[version]
228
@deprecated_method(zero_eight)
229
208
def lookup(self, name):
230
"""Backwards compatability thunk:
232
Return name, as name is valid in the api now, and spew deprecation
237
def _lookup(self, name):
238
"""Convert symbolic version name to index."""
240
210
return self._name_map[name]
242
raise RevisionNotPresent(name, self._weave_name)
244
@deprecated_method(zero_eight)
245
def iter_names(self):
246
"""Deprecated convenience function, please see VersionedFile.names()."""
247
return iter(self.names())
249
@deprecated_method(zero_eight)
251
"""See Weave.versions for the current api."""
252
return self.versions()
255
"""See VersionedFile.versions."""
256
return self._names[:]
258
def has_version(self, version_id):
259
"""See VersionedFile.has_version."""
260
return self._name_map.has_key(version_id)
262
__contains__ = has_version
264
def get_delta(self, version_id):
265
"""See VersionedFile.get_delta."""
266
return self.get_deltas([version_id])[version_id]
268
def get_deltas(self, version_ids):
269
"""See VersionedFile.get_deltas."""
270
version_ids = self.get_ancestry(version_ids)
271
for version_id in version_ids:
272
if not self.has_version(version_id):
273
raise RevisionNotPresent(version_id, self)
274
# try extracting all versions; parallel extraction is used
275
nv = self.num_versions()
281
last_parent_lines = {}
283
parent_inclusions = {}
288
# its simplest to generate a full set of prepared variables.
290
name = self._names[i]
291
sha1s[name] = self.get_sha1(name)
292
parents_list = self.get_parents(name)
294
parent = parents_list[0]
295
parents[name] = parent
296
parent_inclusions[name] = inclusions[parent]
299
parent_inclusions[name] = set()
300
# we want to emit start, finish, replacement_length, replacement_lines tuples.
301
diff_hunks[name] = []
302
current_hunks[name] = [0, 0, 0, []] # #start, finish, repl_length, repl_tuples
303
parent_linenums[name] = 0
305
parent_noeols[name] = False
306
last_parent_lines[name] = None
307
new_inc = set([name])
308
for p in self._parents[i]:
309
new_inc.update(inclusions[self._idx_to_name(p)])
310
# debug only, known good so far.
311
#assert set(new_inc) == set(self.get_ancestry(name)), \
312
# 'failed %s != %s' % (set(new_inc), set(self.get_ancestry(name)))
313
inclusions[name] = new_inc
315
nlines = len(self._weave)
317
for lineno, inserted, deletes, line in self._walk_internal():
318
# a line is active in a version if:
319
# insert is in the versions inclusions
321
# deleteset & the versions inclusions is an empty set.
322
# so - if we have a included by mapping - version is included by
323
# children, we get a list of children to examine for deletes affect
324
# ing them, which is less than the entire set of children.
325
for version_id in version_ids:
326
# The active inclusion must be an ancestor,
327
# and no ancestors must have deleted this line,
328
# because we don't support resurrection.
329
parent_inclusion = parent_inclusions[version_id]
330
inclusion = inclusions[version_id]
331
parent_active = inserted in parent_inclusion and not (deletes & parent_inclusion)
332
version_active = inserted in inclusion and not (deletes & inclusion)
333
if not parent_active and not version_active:
334
# unrelated line of ancestry
336
elif parent_active and version_active:
338
parent_linenum = parent_linenums[version_id]
339
if current_hunks[version_id] != [parent_linenum, parent_linenum, 0, []]:
340
diff_hunks[version_id].append(tuple(current_hunks[version_id]))
342
current_hunks[version_id] = [parent_linenum, parent_linenum, 0, []]
343
parent_linenums[version_id] = parent_linenum
346
noeols[version_id] = True
349
elif parent_active and not version_active:
351
current_hunks[version_id][1] += 1
352
parent_linenums[version_id] += 1
353
last_parent_lines[version_id] = line
354
elif not parent_active and version_active:
356
# noeol only occurs at the end of a file because we
357
# diff linewise. We want to show noeol changes as a
358
# empty diff unless the actual eol-less content changed.
361
if last_parent_lines[version_id][-1] != '\n':
362
parent_noeols[version_id] = True
363
except (TypeError, IndexError):
366
if theline[-1] != '\n':
367
noeols[version_id] = True
371
parent_should_go = False
373
if parent_noeols[version_id] == noeols[version_id]:
374
# no noeol toggle, so trust the weaves statement
375
# that this line is changed.
377
if parent_noeols[version_id]:
378
theline = theline + '\n'
379
elif parent_noeols[version_id]:
380
# parent has no eol, we do:
381
# our line is new, report as such..
383
elif noeols[version_id]:
384
# append a eol so that it looks like
386
theline = theline + '\n'
387
if parents[version_id] is not None:
388
#if last_parent_lines[version_id] is not None:
389
parent_should_go = True
390
if last_parent_lines[version_id] != theline:
393
#parent_should_go = False
395
current_hunks[version_id][2] += 1
396
current_hunks[version_id][3].append((inserted, theline))
398
# last hunk last parent line is not eaten
399
current_hunks[version_id][1] -= 1
400
if current_hunks[version_id][1] < 0:
401
current_hunks[version_id][1] = 0
402
# import pdb;pdb.set_trace()
403
# assert current_hunks[version_id][1] >= 0
407
version = self._idx_to_name(i)
408
if current_hunks[version] != [0, 0, 0, []]:
409
diff_hunks[version].append(tuple(current_hunks[version]))
411
for version_id in version_ids:
412
result[version_id] = (
416
diff_hunks[version_id],
420
def get_parents(self, version_id):
421
"""See VersionedFile.get_parent."""
422
return map(self._idx_to_name, self._parents[self._lookup(version_id)])
424
def _check_repeated_add(self, name, parents, text, sha1):
425
"""Check that a duplicated add is OK.
427
If it is, return the (old) index; otherwise raise an exception.
429
idx = self._lookup(name)
430
if sorted(self._parents[idx]) != sorted(parents) \
431
or sha1 != self._sha1s[idx]:
432
raise RevisionAlreadyPresent(name, self._weave_name)
435
@deprecated_method(zero_eight)
436
def add_identical(self, old_rev_id, new_rev_id, parents):
437
"""Please use Weave.clone_text now."""
438
return self.clone_text(new_rev_id, old_rev_id, parents)
440
def _add_lines(self, version_id, parents, lines, parent_texts):
441
"""See VersionedFile.add_lines."""
442
return self._add(version_id, lines, map(self._lookup, parents))
444
@deprecated_method(zero_eight)
445
def add(self, name, parents, text, sha1=None):
446
"""See VersionedFile.add_lines for the non deprecated api."""
447
return self._add(name, text, map(self._maybe_lookup, parents), sha1)
449
def _add(self, version_id, lines, parents, sha1=None):
212
raise WeaveError("name %s not present in weave" % name)
215
def add(self, name, parents, text):
450
216
"""Add a single text on top of the weave.
452
218
Returns the index number of the newly added version.
455
221
Symbolic name for this version.
456
222
(Typically the revision-id of the revision that added it.)
459
225
List or set of direct parent version numbers.
462
Sequence of lines to be added in the new version.
465
assert isinstance(version_id, basestring)
466
self._check_lines_not_unicode(lines)
467
self._check_lines_are_lines(lines)
469
sha1 = sha_strings(lines)
470
if version_id in self._name_map:
471
return self._check_repeated_add(version_id, parents, lines, sha1)
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)
473
234
self._check_versions(parents)
474
## self._check_lines(lines)
235
## self._check_lines(text)
475
236
new_version = len(self._parents)
477
243
# if we abort after here the (in-memory) weave will be corrupt because only
478
244
# some fields are updated
479
# XXX: FIXME implement a succeed-or-fail of the rest of this routine.
480
# - Robert Collins 20060226
481
245
self._parents.append(parents[:])
482
246
self._sha1s.append(sha1)
483
self._names.append(version_id)
484
self._name_map[version_id] = new_version
247
self._names.append(name)
248
self._name_map[name] = new_version
621
392
except IndexError:
622
393
raise IndexError("invalid version number %r" % i)
624
def _compatible_parents(self, my_parents, other_parents):
625
"""During join check that other_parents are joinable with my_parents.
627
Joinable is defined as 'is a subset of' - supersets may require
628
regeneration of diffs, but subsets do not.
630
return len(other_parents.difference(my_parents)) == 0
632
def annotate(self, version_id):
633
if isinstance(version_id, int):
634
warn('Weave.annotate(int) is deprecated. Please use version names'
635
' in all circumstances as of 0.8',
640
for origin, lineno, text in self._extract([version_id]):
641
result.append((origin, text))
644
return super(Weave, self).annotate(version_id)
646
def annotate_iter(self, version_id):
647
"""Yield list of (version-id, line) pairs for the specified version.
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.
649
403
The index indicates when the line originated in the weave."""
650
incls = [self._lookup(version_id)]
651
for origin, lineno, text in self._extract(incls):
652
yield self._idx_to_name(origin), text
654
@deprecated_method(zero_eight)
404
for origin, lineno, text in self._extract([version]):
656
"""_walk has become visit, a supported api."""
657
return self._walk_internal()
659
def iter_lines_added_or_present_in_versions(self, version_ids=None):
660
"""See VersionedFile.iter_lines_added_or_present_in_versions()."""
661
if version_ids is None:
662
version_ids = self.versions()
663
version_ids = set(version_ids)
664
for lineno, inserted, deletes, line in self._walk_internal(version_ids):
665
# if inserted not in version_ids then it was inserted before the
666
# versions we care about, but because weaves cannot represent ghosts
667
# properly, we do not filter down to that
668
# if inserted not in version_ids: continue
674
#@deprecated_method(zero_eight)
675
def walk(self, version_ids=None):
676
"""See VersionedFile.walk."""
677
return self._walk_internal(version_ids)
679
def _walk_internal(self, version_ids=None):
680
"""Helper method for weave actions."""
412
(lineno, insert, deletes, text)
413
for each literal line.
836
assert l.__class__ in (str, unicode)
486
assert isinstance(l, basestring)
837
487
if isactive is None:
838
488
isactive = (not dset) and istack and (istack[-1] in included)
840
490
result.append((istack[-1], lineno, l))
843
raise WeaveFormatError("unclosed insertion blocks "
844
"at end of weave: %s" % istack)
494
raise WFE("unclosed insertion blocks at end of weave",
846
raise WeaveFormatError("unclosed deletion blocks at end of weave: %s"
850
@deprecated_method(zero_eight)
851
def get_iter(self, name_or_index):
852
"""Deprecated, please do not use. Lookups are not not needed.
854
Please use get_lines now.
856
return iter(self.get_lines(self._maybe_lookup(name_or_index)))
858
@deprecated_method(zero_eight)
859
def maybe_lookup(self, name_or_index):
860
"""Deprecated, please do not use. Lookups are not not needed."""
861
return self._maybe_lookup(name_or_index)
863
def _maybe_lookup(self, name_or_index):
864
"""Convert possible symbolic name to index, or pass through indexes.
868
if isinstance(name_or_index, (int, long)):
871
return self._lookup(name_or_index)
873
@deprecated_method(zero_eight)
874
def get(self, version_id):
875
"""Please use either Weave.get_text or Weave.get_lines as desired."""
876
return self.get_lines(version_id)
878
def get_lines(self, version_id):
879
"""See VersionedFile.get_lines()."""
880
int_index = self._maybe_lookup(version_id)
881
result = [line for (origin, lineno, line) in self._extract([int_index])]
882
expected_sha1 = self._sha1s[int_index]
883
measured_sha1 = sha_strings(result)
884
if measured_sha1 != expected_sha1:
885
raise errors.WeaveInvalidChecksum(
886
'file %s, revision %s, expected: %s, measured %s'
887
% (self._weave_name, version_id,
888
expected_sha1, measured_sha1))
891
def get_sha1(self, version_id):
892
"""See VersionedFile.get_sha1()."""
893
return self._sha1s[self._lookup(version_id)]
895
@deprecated_method(zero_eight)
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)
896
529
def numversions(self):
897
"""How many versions are in this weave?
899
Deprecated in favour of num_versions.
901
return self.num_versions()
903
def num_versions(self):
904
"""How many versions are in this weave?"""
905
530
l = len(self._parents)
906
531
assert l == len(self._sha1s)
909
__len__ = num_versions
536
return self.numversions()
911
539
def check(self, progress_bar=None):
912
# TODO evaluate performance hit of using string sets in this routine.
913
# TODO: check no circular inclusions
914
# TODO: create a nested progress bar
915
for version in range(self.num_versions()):
540
# check no circular inclusions
541
for version in range(self.numversions()):
916
542
inclusions = list(self._parents[version])
918
544
inclusions.sort()
920
546
raise WeaveFormatError("invalid included version %d for index %d"
921
547
% (inclusions[-1], version))
923
# try extracting all versions; parallel extraction is used
924
nv = self.num_versions()
929
# For creating the ancestry, IntSet is much faster (3.7s vs 0.17s)
930
# The problem is that set membership is much more expensive
931
name = self._idx_to_name(i)
932
sha1s[name] = sha.new()
934
new_inc = set([name])
935
for p in self._parents[i]:
936
new_inc.update(inclusions[self._idx_to_name(p)])
938
assert set(new_inc) == set(self.get_ancestry(name)), \
939
'failed %s != %s' % (set(new_inc), set(self.get_ancestry(name)))
940
inclusions[name] = new_inc
942
nlines = len(self._weave)
944
update_text = 'checking weave'
946
short_name = os.path.basename(self._weave_name)
947
update_text = 'checking %s' % (short_name,)
948
update_text = update_text[:25]
950
for lineno, insert, deleteset, line in self._walk_internal():
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):
952
progress_bar.update(update_text, lineno, nlines)
954
for name, name_inclusions in inclusions.items():
955
# The active inclusion must be an ancestor,
956
# and no ancestors must have deleted this line,
957
# because we don't support resurrection.
958
if (insert in name_inclusions) and not (deleteset & name_inclusions):
959
sha1s[name].update(line)
962
version = self._idx_to_name(i)
963
hd = sha1s[version].hexdigest()
964
expected = self._sha1s[i]
554
progress_bar.update('checking text', version, nv)
556
for l in self.get_iter(version):
559
expected = self._sha1s[version]
965
560
if hd != expected:
966
raise errors.WeaveInvalidChecksum(
967
"mismatched sha1 for version %s: "
968
"got %s, expected %s"
969
% (version, hd, expected))
561
raise WeaveError("mismatched sha1 for version %d; "
562
"got %s, expected %s"
563
% (version, hd, expected))
971
565
# TODO: check insertions are properly nested, that there are
972
566
# no lines outside of insertion blocks, that deletions are
973
567
# properly paired, etc.
975
def _join(self, other, pb, msg, version_ids, ignore_missing):
976
"""Worker routine for join()."""
977
if not other.versions():
978
return # nothing to update, easy
981
# versions is never none, InterWeave checks this.
984
# two loops so that we do not change ourselves before verifying it
986
# work through in index order to make sure we get all dependencies
989
# get the selected versions only that are in other.versions.
990
version_ids = set(other.versions()).intersection(set(version_ids))
991
# pull in the referenced graph.
992
version_ids = other.get_ancestry(version_ids)
993
pending_graph = [(version, other.get_parents(version)) for
994
version in version_ids]
995
for name in topo_sort(pending_graph):
996
other_idx = other._name_map[name]
997
# returns True if we have it, False if we need it.
998
if not self._check_version_consistent(other, other_idx, name):
999
names_to_join.append((other_idx, name))
1008
for other_idx, name in names_to_join:
1009
# TODO: If all the parents of the other version are already
1010
# present then we can avoid some work by just taking the delta
1011
# and adjusting the offsets.
1012
new_parents = self._imported_parents(other, other_idx)
1013
sha1 = other._sha1s[other_idx]
1018
pb.update(msg, merged, len(names_to_join))
1020
lines = other.get_lines(other_idx)
1021
self._add(name, lines, new_parents, sha1)
1023
mutter("merged = %d, processed = %d, file_id=%s; deltat=%d"%(
1024
merged, processed, self._weave_name, time.time()-time0))
1026
def _imported_parents(self, other, other_idx):
1027
"""Return list of parents in self corresponding to indexes in other."""
1029
for parent_idx in other._parents[other_idx]:
1030
parent_name = other._names[parent_idx]
1031
if parent_name not in self._name_map:
1032
# should not be possible
1033
raise WeaveError("missing parent {%s} of {%s} in %r"
1034
% (parent_name, other._name_map[other_idx], self))
1035
new_parents.append(self._name_map[parent_name])
1038
def _check_version_consistent(self, other, other_idx, name):
1039
"""Check if a version in consistent in this and other.
1041
To be consistent it must have:
1044
* the same direct parents (by name, not index, and disregarding
1047
If present & correct return True;
1048
if not present in self return False;
1049
if inconsistent raise error."""
1050
this_idx = self._name_map.get(name, -1)
1052
if self._sha1s[this_idx] != other._sha1s[other_idx]:
1053
raise errors.WeaveTextDiffers(name, self, other)
1054
self_parents = self._parents[this_idx]
1055
other_parents = other._parents[other_idx]
1056
n1 = set([self._names[i] for i in self_parents])
1057
n2 = set([other._names[i] for i in other_parents])
1058
if not self._compatible_parents(n1, n2):
1059
raise WeaveParentMismatch("inconsistent parents "
1060
"for version {%s}: %s vs %s" % (name, n1, n2))
1066
@deprecated_method(zero_eight)
1067
def reweave(self, other, pb=None, msg=None):
1068
"""reweave has been superceded by plain use of join."""
1069
return self.join(other, pb, msg)
1071
def _reweave(self, other, pb, msg):
1072
"""Reweave self with other - internal helper for join().
1074
:param other: The other weave to merge
1075
:param pb: An optional progress bar, indicating how far done we are
1076
:param msg: An optional message for the progress
1078
new_weave = _reweave(self, other, pb=pb, msg=msg)
1079
self._copy_weave_content(new_weave)
1081
def _copy_weave_content(self, otherweave):
1082
"""adsorb the content from otherweave."""
1083
for attr in self.__slots__:
1084
if attr != '_weave_name':
1085
setattr(self, attr, copy(getattr(otherweave, attr)))
1088
class WeaveFile(Weave):
1089
"""A WeaveFile represents a Weave on disk and writes on change."""
1091
WEAVE_SUFFIX = '.weave'
1093
def __init__(self, name, transport, filemode=None, create=False, access_mode='w'):
1094
"""Create a WeaveFile.
1096
:param create: If not True, only open an existing knit.
1098
super(WeaveFile, self).__init__(name, access_mode)
1099
self._transport = transport
1100
self._filemode = filemode
1102
_read_weave_v5(self._transport.get(name + WeaveFile.WEAVE_SUFFIX), self)
1103
except errors.NoSuchFile:
1109
def _add_lines(self, version_id, parents, lines, parent_texts):
1110
"""Add a version and save the weave."""
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(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(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):
1160
"""Combine two weaves and return the result.
1162
This works even if a revision R has different parents in
1163
wa and wb. In the resulting weave all the parents are given.
1165
This is done by just building up a new weave, maintaining ordering
1166
of the versions in the two inputs. More efficient approaches
1167
might be possible but it should only be necessary to do
1168
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())
1178
# first determine combined parents of all versions
1179
# map from version name -> all parent names
1180
combined_parents = _reweave_parent_graphs(wa, wb)
1181
mutter("combined parents: %r", combined_parents)
1182
order = topo_sort(combined_parents.iteritems())
1183
mutter("order to reweave: %r", order)
1188
for idx, name in enumerate(order):
1190
pb.update(msg, idx, len(order))
1191
if name in wa._name_map:
1192
lines = wa.get_lines(name)
1193
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)
1204
lines = wb.get_lines(name)
1205
wr._add(name, lines, [wr._lookup(i) for i in combined_parents[name]])
1208
def _reweave_parent_graphs(wa, wb):
1209
"""Return combined parent ancestry for two weaves.
1211
Returned as a list of (version_name, set(parent_names))"""
1213
for weave in [wa, wb]:
1214
for idx, name in enumerate(weave._names):
1215
p = combined.setdefault(name, set())
1216
p.update(map(weave._idx_to_name, weave._parents[idx]))
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',
1220
712
def weave_toc(w):
added
removed
bzrlib/weave.py
