59
61
# where the basis and destination are unchanged.
61
63
# FIXME: Sometimes we will be given a parents list for a revision
62
# that includes some redundant parents (i.e. already a parent of
63
# something in the list.) We should eliminate them. This can
64
# that includes some redundant parents (i.e. already a parent of
65
# something in the list.) We should eliminate them. This can
64
66
# be done fairly efficiently because the sequence numbers constrain
65
67
# the possible relationships.
67
# FIXME: the conflict markers should be *7* characters
69
70
from copy import copy
70
71
from cStringIO import StringIO
72
from difflib import SequenceMatcher
73
from bzrlib.lazy_import import lazy_import
74
lazy_import(globals(), """
75
from bzrlib import tsort
77
from bzrlib.trace import mutter
81
78
from bzrlib.errors import (WeaveError, WeaveFormatError, WeaveParentMismatch,
82
79
RevisionAlreadyPresent,
83
80
RevisionNotPresent,
84
UnavailableRepresentation,
81
WeaveRevisionAlreadyPresent,
82
WeaveRevisionNotPresent,
86
from bzrlib.osutils import dirname, sha, sha_strings, split_lines
87
import bzrlib.patiencediff
88
from bzrlib.revision import NULL_REVISION
84
import bzrlib.errors as errors
85
from bzrlib.osutils import sha_strings
89
86
from bzrlib.symbol_versioning import *
90
from bzrlib.trace import mutter
91
from bzrlib.versionedfile import (
87
from bzrlib.tsort import topo_sort
88
from bzrlib.versionedfile import VersionedFile, InterVersionedFile
98
89
from bzrlib.weavefile import _read_weave_v5, write_weave_v5
101
class WeaveContentFactory(ContentFactory):
102
"""Content factory for streaming from weaves.
104
:seealso ContentFactory:
107
def __init__(self, version, weave):
108
"""Create a WeaveContentFactory for version from weave."""
109
ContentFactory.__init__(self)
110
self.sha1 = weave.get_sha1s([version])[version]
111
self.key = (version,)
112
parents = weave.get_parent_map([version])[version]
113
self.parents = tuple((parent,) for parent in parents)
114
self.storage_kind = 'fulltext'
117
def get_bytes_as(self, storage_kind):
118
if storage_kind == 'fulltext':
119
return self._weave.get_text(self.key[-1])
120
elif storage_kind == 'chunked':
121
return self._weave.get_lines(self.key[-1])
123
raise UnavailableRepresentation(self.key, storage_kind, 'fulltext')
126
92
class Weave(VersionedFile):
127
93
"""weave - versioned text file storage.
129
95
A Weave manages versions of line-based text files, keeping track
130
96
of the originating version for each line.
270
212
return self._parents == other._parents \
271
213
and self._weave == other._weave \
272
and self._sha1s == other._sha1s
214
and self._sha1s == other._sha1s
274
216
def __ne__(self, other):
275
217
return not self.__eq__(other)
219
@deprecated_method(zero_eight)
220
def idx_to_name(self, index):
221
"""Old public interface, the public interface is all names now."""
277
224
def _idx_to_name(self, version):
278
225
return self._names[version]
227
@deprecated_method(zero_eight)
228
def lookup(self, name):
229
"""Backwards compatability thunk:
231
Return name, as name is valid in the api now, and spew deprecation
280
236
def _lookup(self, name):
281
237
"""Convert symbolic version name to index."""
282
if not self._allow_reserved:
283
self.check_not_reserved_id(name)
285
239
return self._name_map[name]
287
241
raise RevisionNotPresent(name, self._weave_name)
243
@deprecated_method(zero_eight)
244
def iter_names(self):
245
"""Deprecated convenience function, please see VersionedFile.names()."""
246
return iter(self.names())
248
@deprecated_method(zero_eight)
250
"""See Weave.versions for the current api."""
251
return self.versions()
289
253
def versions(self):
290
254
"""See VersionedFile.versions."""
291
255
return self._names[:]
293
257
def has_version(self, version_id):
294
258
"""See VersionedFile.has_version."""
295
return (version_id in self._name_map)
259
return self._name_map.has_key(version_id)
297
261
__contains__ = has_version
299
def get_record_stream(self, versions, ordering, include_delta_closure):
300
"""Get a stream of records for versions.
302
:param versions: The versions to include. Each version is a tuple
304
:param ordering: Either 'unordered' or 'topological'. A topologically
305
sorted stream has compression parents strictly before their
307
:param include_delta_closure: If True then the closure across any
308
compression parents will be included (in the opaque data).
309
:return: An iterator of ContentFactory objects, each of which is only
310
valid until the iterator is advanced.
312
versions = [version[-1] for version in versions]
313
if ordering == 'topological':
314
parents = self.get_parent_map(versions)
315
new_versions = tsort.topo_sort(parents)
316
new_versions.extend(set(versions).difference(set(parents)))
317
versions = new_versions
318
elif ordering == 'groupcompress':
319
parents = self.get_parent_map(versions)
320
new_versions = sort_groupcompress(parents)
321
new_versions.extend(set(versions).difference(set(parents)))
322
versions = new_versions
323
for version in versions:
325
yield WeaveContentFactory(version, self)
327
yield AbsentContentFactory((version,))
329
def get_parent_map(self, version_ids):
330
"""See VersionedFile.get_parent_map."""
263
def get_delta(self, version_id):
264
"""See VersionedFile.get_delta."""
265
return self.get_deltas([version_id])[version_id]
267
def get_deltas(self, version_ids):
268
"""See VersionedFile.get_deltas."""
269
version_ids = self.get_ancestry(version_ids)
332
270
for version_id in version_ids:
333
if version_id == NULL_REVISION:
338
map(self._idx_to_name,
339
self._parents[self._lookup(version_id)]))
340
except RevisionNotPresent:
271
if not self.has_version(version_id):
272
raise RevisionNotPresent(version_id, self)
273
# try extracting all versions; parallel extraction is used
274
nv = self.num_versions()
280
last_parent_lines = {}
282
parent_inclusions = {}
287
# its simplest to generate a full set of prepared variables.
289
name = self._names[i]
290
sha1s[name] = self.get_sha1(name)
291
parents_list = self.get_parents(name)
293
parent = parents_list[0]
294
parents[name] = parent
295
parent_inclusions[name] = inclusions[parent]
298
parent_inclusions[name] = set()
299
# we want to emit start, finish, replacement_length, replacement_lines tuples.
300
diff_hunks[name] = []
301
current_hunks[name] = [0, 0, 0, []] # #start, finish, repl_length, repl_tuples
302
parent_linenums[name] = 0
304
parent_noeols[name] = False
305
last_parent_lines[name] = None
306
new_inc = set([name])
307
for p in self._parents[i]:
308
new_inc.update(inclusions[self._idx_to_name(p)])
309
# debug only, known good so far.
310
#assert set(new_inc) == set(self.get_ancestry(name)), \
311
# 'failed %s != %s' % (set(new_inc), set(self.get_ancestry(name)))
312
inclusions[name] = new_inc
314
nlines = len(self._weave)
316
for lineno, inserted, deletes, line in self._walk_internal():
317
# a line is active in a version if:
318
# insert is in the versions inclusions
320
# deleteset & the versions inclusions is an empty set.
321
# so - if we have a included by mapping - version is included by
322
# children, we get a list of children to examine for deletes affect
323
# ing them, which is less than the entire set of children.
324
for version_id in version_ids:
325
# The active inclusion must be an ancestor,
326
# and no ancestors must have deleted this line,
327
# because we don't support resurrection.
328
parent_inclusion = parent_inclusions[version_id]
329
inclusion = inclusions[version_id]
330
parent_active = inserted in parent_inclusion and not (deletes & parent_inclusion)
331
version_active = inserted in inclusion and not (deletes & inclusion)
332
if not parent_active and not version_active:
333
# unrelated line of ancestry
342
result[version_id] = parents
335
elif parent_active and version_active:
337
parent_linenum = parent_linenums[version_id]
338
if current_hunks[version_id] != [parent_linenum, parent_linenum, 0, []]:
339
diff_hunks[version_id].append(tuple(current_hunks[version_id]))
341
current_hunks[version_id] = [parent_linenum, parent_linenum, 0, []]
342
parent_linenums[version_id] = parent_linenum
345
noeols[version_id] = True
348
elif parent_active and not version_active:
350
current_hunks[version_id][1] += 1
351
parent_linenums[version_id] += 1
352
last_parent_lines[version_id] = line
353
elif not parent_active and version_active:
355
# noeol only occurs at the end of a file because we
356
# diff linewise. We want to show noeol changes as a
357
# empty diff unless the actual eol-less content changed.
360
if last_parent_lines[version_id][-1] != '\n':
361
parent_noeols[version_id] = True
362
except (TypeError, IndexError):
365
if theline[-1] != '\n':
366
noeols[version_id] = True
370
parent_should_go = False
372
if parent_noeols[version_id] == noeols[version_id]:
373
# no noeol toggle, so trust the weaves statement
374
# that this line is changed.
376
if parent_noeols[version_id]:
377
theline = theline + '\n'
378
elif parent_noeols[version_id]:
379
# parent has no eol, we do:
380
# our line is new, report as such..
382
elif noeols[version_id]:
383
# append a eol so that it looks like
385
theline = theline + '\n'
386
if parents[version_id] is not None:
387
#if last_parent_lines[version_id] is not None:
388
parent_should_go = True
389
if last_parent_lines[version_id] != theline:
392
#parent_should_go = False
394
current_hunks[version_id][2] += 1
395
current_hunks[version_id][3].append((inserted, theline))
397
# last hunk last parent line is not eaten
398
current_hunks[version_id][1] -= 1
399
if current_hunks[version_id][1] < 0:
400
current_hunks[version_id][1] = 0
401
# import pdb;pdb.set_trace()
402
# assert current_hunks[version_id][1] >= 0
406
version = self._idx_to_name(i)
407
if current_hunks[version] != [0, 0, 0, []]:
408
diff_hunks[version].append(tuple(current_hunks[version]))
410
for version_id in version_ids:
411
result[version_id] = (
415
diff_hunks[version_id],
345
def get_parents_with_ghosts(self, version_id):
346
raise NotImplementedError(self.get_parents_with_ghosts)
348
def insert_record_stream(self, stream):
349
"""Insert a record stream into this versioned file.
351
:param stream: A stream of records to insert.
353
:seealso VersionedFile.get_record_stream:
356
for record in stream:
357
# Raise an error when a record is missing.
358
if record.storage_kind == 'absent':
359
raise RevisionNotPresent([record.key[0]], self)
360
# adapt to non-tuple interface
361
parents = [parent[0] for parent in record.parents]
362
if (record.storage_kind == 'fulltext'
363
or record.storage_kind == 'chunked'):
364
self.add_lines(record.key[0], parents,
365
osutils.chunks_to_lines(record.get_bytes_as('chunked')))
367
adapter_key = record.storage_kind, 'fulltext'
369
adapter = adapters[adapter_key]
371
adapter_factory = adapter_registry.get(adapter_key)
372
adapter = adapter_factory(self)
373
adapters[adapter_key] = adapter
374
lines = split_lines(adapter.get_bytes(record))
376
self.add_lines(record.key[0], parents, lines)
377
except RevisionAlreadyPresent:
419
def get_parents(self, version_id):
420
"""See VersionedFile.get_parent."""
421
return map(self._idx_to_name, self._parents[self._lookup(version_id)])
380
423
def _check_repeated_add(self, name, parents, text, sha1):
381
424
"""Check that a duplicated add is OK.
388
431
raise RevisionAlreadyPresent(name, self._weave_name)
391
def _add_lines(self, version_id, parents, lines, parent_texts,
392
left_matching_blocks, nostore_sha, random_id, check_content):
434
@deprecated_method(zero_eight)
435
def add_identical(self, old_rev_id, new_rev_id, parents):
436
"""Please use Weave.clone_text now."""
437
return self.clone_text(new_rev_id, old_rev_id, parents)
439
def _add_lines(self, version_id, parents, lines, parent_texts):
393
440
"""See VersionedFile.add_lines."""
394
idx = self._add(version_id, lines, map(self._lookup, parents),
395
nostore_sha=nostore_sha)
396
return sha_strings(lines), sum(map(len, lines)), idx
398
def _add(self, version_id, lines, parents, sha1=None, nostore_sha=None):
441
return self._add(version_id, lines, map(self._lookup, parents))
443
@deprecated_method(zero_eight)
444
def add(self, name, parents, text, sha1=None):
445
"""See VersionedFile.add_lines for the non deprecated api."""
446
return self._add(name, text, map(self._maybe_lookup, parents), sha1)
448
def _add(self, version_id, lines, parents, sha1=None):
399
449
"""Add a single text on top of the weave.
401
451
Returns the index number of the newly added version.
404
454
Symbolic name for this version.
405
455
(Typically the revision-id of the revision that added it.)
406
If None, a name will be allocated based on the hash. (sha1:SHAHASH)
409
458
List or set of direct parent version numbers.
412
461
Sequence of lines to be added in the new version.
414
:param nostore_sha: See VersionedFile.add_lines.
416
self._check_lines_not_unicode(lines)
417
self._check_lines_are_lines(lines)
464
assert isinstance(version_id, basestring)
419
466
sha1 = sha_strings(lines)
420
if sha1 == nostore_sha:
421
raise errors.ExistingContent
422
if version_id is None:
423
version_id = "sha1:" + sha1
424
467
if version_id in self._name_map:
425
468
return self._check_repeated_add(version_id, parents, lines, sha1)
557
621
def _compatible_parents(self, my_parents, other_parents):
558
622
"""During join check that other_parents are joinable with my_parents.
560
Joinable is defined as 'is a subset of' - supersets may require
624
Joinable is defined as 'is a subset of' - supersets may require
561
625
regeneration of diffs, but subsets do not.
563
627
return len(other_parents.difference(my_parents)) == 0
565
629
def annotate(self, version_id):
566
"""Return a list of (version-id, line) tuples for version_id.
630
if isinstance(version_id, int):
631
warn('Weave.annotate(int) is deprecated. Please use version names'
632
' in all circumstances as of 0.8',
637
for origin, lineno, text in self._extract([version_id]):
638
result.append((origin, text))
641
return super(Weave, self).annotate(version_id)
643
def annotate_iter(self, version_id):
644
"""Yield list of (version-id, line) pairs for the specified version.
568
646
The index indicates when the line originated in the weave."""
569
647
incls = [self._lookup(version_id)]
570
return [(self._idx_to_name(origin), text) for origin, lineno, text in
571
self._extract(incls)]
573
def iter_lines_added_or_present_in_versions(self, version_ids=None,
648
for origin, lineno, text in self._extract(incls):
649
yield self._idx_to_name(origin), text
651
@deprecated_method(zero_eight)
653
"""_walk has become visit, a supported api."""
654
return self._walk_internal()
656
def iter_lines_added_or_present_in_versions(self, version_ids=None):
575
657
"""See VersionedFile.iter_lines_added_or_present_in_versions()."""
576
658
if version_ids is None:
577
659
version_ids = self.versions()
578
660
version_ids = set(version_ids)
579
661
for lineno, inserted, deletes, line in self._walk_internal(version_ids):
580
if inserted not in version_ids: continue
662
# if inserted not in version_ids then it was inserted before the
663
# versions we care about, but because weaves cannot represent ghosts
664
# properly, we do not filter down to that
665
# if inserted not in version_ids: continue
581
666
if line[-1] != '\n':
582
yield line + '\n', inserted
671
#@deprecated_method(zero_eight)
672
def walk(self, version_ids=None):
673
"""See VersionedFile.walk."""
674
return self._walk_internal(version_ids)
586
676
def _walk_internal(self, version_ids=None):
587
677
"""Helper method for weave actions."""
848
925
# no lines outside of insertion blocks, that deletions are
849
926
# properly paired, etc.
928
def _join(self, other, pb, msg, version_ids, ignore_missing):
929
"""Worker routine for join()."""
930
if not other.versions():
931
return # nothing to update, easy
934
for version_id in version_ids:
935
if not other.has_version(version_id) and not ignore_missing:
936
raise RevisionNotPresent(version_id, self._weave_name)
938
version_ids = other.versions()
940
# two loops so that we do not change ourselves before verifying it
942
# work through in index order to make sure we get all dependencies
945
# get the selected versions only that are in other.versions.
946
version_ids = set(other.versions()).intersection(set(version_ids))
947
# pull in the referenced graph.
948
version_ids = other.get_ancestry(version_ids)
949
pending_graph = [(version, other.get_parents(version)) for
950
version in version_ids]
951
for name in topo_sort(pending_graph):
952
other_idx = other._name_map[name]
953
# returns True if we have it, False if we need it.
954
if not self._check_version_consistent(other, other_idx, name):
955
names_to_join.append((other_idx, name))
964
for other_idx, name in names_to_join:
965
# TODO: If all the parents of the other version are already
966
# present then we can avoid some work by just taking the delta
967
# and adjusting the offsets.
968
new_parents = self._imported_parents(other, other_idx)
969
sha1 = other._sha1s[other_idx]
974
pb.update(msg, merged, len(names_to_join))
976
lines = other.get_lines(other_idx)
977
self._add(name, lines, new_parents, sha1)
979
mutter("merged = %d, processed = %d, file_id=%s; deltat=%d"%(
980
merged, processed, self._weave_name, time.time()-time0))
851
982
def _imported_parents(self, other, other_idx):
852
983
"""Return list of parents in self corresponding to indexes in other."""
951
1091
sio = StringIO()
952
1092
write_weave_v5(self, sio)
954
bytes = sio.getvalue()
955
path = self._weave_name + WeaveFile.WEAVE_SUFFIX
957
self._transport.put_bytes(path, bytes, self._filemode)
958
except errors.NoSuchFile:
959
self._transport.mkdir(dirname(path))
960
self._transport.put_bytes(path, bytes, self._filemode)
1094
self._transport.put(self._weave_name + WeaveFile.WEAVE_SUFFIX,
963
1099
def get_suffixes():
964
1100
"""See VersionedFile.get_suffixes()."""
965
1101
return [WeaveFile.WEAVE_SUFFIX]
967
def insert_record_stream(self, stream):
968
super(WeaveFile, self).insert_record_stream(stream)
1103
def join(self, other, pb=None, msg=None, version_ids=None,
1104
ignore_missing=False):
1105
"""Join other into self and save."""
1106
super(WeaveFile, self).join(other, pb, msg, version_ids, ignore_missing)
1110
@deprecated_function(zero_eight)
1111
def reweave(wa, wb, pb=None, msg=None):
1112
"""reweaving is deprecation, please just use weave.join()."""
1113
_reweave(wa, wb, pb, msg)
972
1115
def _reweave(wa, wb, pb=None, msg=None):
973
1116
"""Combine two weaves and return the result.
975
This works even if a revision R has different parents in
1118
This works even if a revision R has different parents in
976
1119
wa and wb. In the resulting weave all the parents are given.
978
This is done by just building up a new weave, maintaining ordering
1121
This is done by just building up a new weave, maintaining ordering
979
1122
of the versions in the two inputs. More efficient approaches
980
might be possible but it should only be necessary to do
981
this operation rarely, when a new previously ghost version is
1123
might be possible but it should only be necessary to do
1124
this operation rarely, when a new previously ghost version is
984
1127
:param pb: An optional progress bar, indicating how far done we are
1029
1171
p = combined.setdefault(name, set())
1030
1172
p.update(map(weave._idx_to_name, weave._parents[idx]))
1031
1173
return combined
1177
"""Show the weave's table-of-contents"""
1178
print '%6s %50s %10s %10s' % ('ver', 'name', 'sha1', 'parents')
1179
for i in (6, 50, 10, 10):
1182
for i in range(w.num_versions()):
1185
parent_str = ' '.join(map(str, w._parents[i]))
1186
print '%6d %-50.50s %10.10s %s' % (i, name, sha1, parent_str)
1190
def weave_stats(weave_file, pb):
1191
from bzrlib.weavefile import read_weave
1193
wf = file(weave_file, 'rb')
1194
w = read_weave(wf, WeaveVersionedFile)
1195
# FIXME: doesn't work on pipes
1196
weave_size = wf.tell()
1200
for i in range(vers):
1201
pb.update('checking sizes', i, vers)
1202
for origin, lineno, line in w._extract([i]):
1207
print 'versions %9d' % vers
1208
print 'weave file %9d bytes' % weave_size
1209
print 'total contents %9d bytes' % total
1210
print 'compression ratio %9.2fx' % (float(total) / float(weave_size))
1213
print 'average size %9d bytes' % avg
1214
print 'relative size %9.2fx' % (float(weave_size) / float(avg))
1218
print """bzr weave tool
1220
Experimental tool for weave algorithm.
1223
weave init WEAVEFILE
1224
Create an empty weave file
1225
weave get WEAVEFILE VERSION
1226
Write out specified version.
1227
weave check WEAVEFILE
1228
Check consistency of all versions.
1230
Display table of contents.
1231
weave add WEAVEFILE NAME [BASE...] < NEWTEXT
1232
Add NEWTEXT, with specified parent versions.
1233
weave annotate WEAVEFILE VERSION
1234
Display origin of each line.
1235
weave merge WEAVEFILE VERSION1 VERSION2 > OUT
1236
Auto-merge two versions and display conflicts.
1237
weave diff WEAVEFILE VERSION1 VERSION2
1238
Show differences between two versions.
1242
% weave init foo.weave
1244
% weave add foo.weave ver0 < foo.txt
1247
(create updated version)
1249
% weave get foo.weave 0 | diff -u - foo.txt
1250
% weave add foo.weave ver1 0 < foo.txt
1253
% weave get foo.weave 0 > foo.txt (create forked version)
1255
% weave add foo.weave ver2 0 < foo.txt
1258
% weave merge foo.weave 1 2 > foo.txt (merge them)
1259
% vi foo.txt (resolve conflicts)
1260
% weave add foo.weave merged 1 2 < foo.txt (commit merged version)
1272
# in case we're run directly from the subdirectory
1273
sys.path.append('..')
1275
from bzrlib.weavefile import write_weave, read_weave
1276
from bzrlib.progress import ProgressBar
1291
return read_weave(file(argv[2], 'rb'))
1297
# at the moment, based on everything in the file
1299
parents = map(int, argv[4:])
1300
lines = sys.stdin.readlines()
1301
ver = w.add(name, parents, lines)
1302
write_weave(w, file(argv[2], 'wb'))
1303
print 'added version %r %d' % (name, ver)
1306
if os.path.exists(fn):
1307
raise IOError("file exists")
1309
write_weave(w, file(fn, 'wb'))
1310
elif cmd == 'get': # get one version
1312
sys.stdout.writelines(w.get_iter(int(argv[3])))
1315
from difflib import unified_diff
1318
v1, v2 = map(int, argv[3:5])
1321
diff_gen = unified_diff(lines1, lines2,
1322
'%s version %d' % (fn, v1),
1323
'%s version %d' % (fn, v2))
1324
sys.stdout.writelines(diff_gen)
1326
elif cmd == 'annotate':
1328
# newline is added to all lines regardless; too hard to get
1329
# reasonable formatting otherwise
1331
for origin, text in w.annotate(int(argv[3])):
1332
text = text.rstrip('\r\n')
1334
print ' | %s' % (text)
1336
print '%5d | %s' % (origin, text)
1342
elif cmd == 'stats':
1343
weave_stats(argv[2], ProgressBar())
1345
elif cmd == 'check':
1350
print '%d versions ok' % w.num_versions()
1352
elif cmd == 'inclusions':
1354
print ' '.join(map(str, w.inclusions([int(argv[3])])))
1356
elif cmd == 'parents':
1358
print ' '.join(map(str, w._parents[int(argv[3])]))
1360
elif cmd == 'plan-merge':
1362
for state, line in w.plan_merge(int(argv[3]), int(argv[4])):
1364
print '%14s | %s' % (state, line),
1366
elif cmd == 'merge':
1368
p = w.plan_merge(int(argv[3]), int(argv[4]))
1369
sys.stdout.writelines(w.weave_merge(p))
1371
raise ValueError('unknown command %r' % cmd)
1375
def profile_main(argv):
1376
import tempfile, hotshot, hotshot.stats
1378
prof_f = tempfile.NamedTemporaryFile()
1380
prof = hotshot.Profile(prof_f.name)
1382
ret = prof.runcall(main, argv)
1385
stats = hotshot.stats.load(prof_f.name)
1387
stats.sort_stats('cumulative')
1388
## XXX: Might like to write to stderr or the trace file instead but
1389
## print_stats seems hardcoded to stdout
1390
stats.print_stats(20)
1395
def lsprofile_main(argv):
1396
from bzrlib.lsprof import profile
1397
ret,stats = profile(main, argv)
1403
if __name__ == '__main__':
1405
if '--profile' in sys.argv:
1407
args.remove('--profile')
1408
sys.exit(profile_main(args))
1409
elif '--lsprof' in sys.argv:
1411
args.remove('--lsprof')
1412
sys.exit(lsprofile_main(args))
1414
sys.exit(main(sys.argv))
1417
class InterWeave(InterVersionedFile):
1418
"""Optimised code paths for weave to weave operations."""
1420
_matching_file_factory = staticmethod(WeaveFile)
1423
def is_compatible(source, target):
1424
"""Be compatible with weaves."""
1426
return (isinstance(source, Weave) and
1427
isinstance(target, Weave))
1428
except AttributeError:
1431
def join(self, pb=None, msg=None, version_ids=None, ignore_missing=False):
1432
"""See InterVersionedFile.join."""
1433
if self.target.versions() == []:
1435
self.target._copy_weave_content(self.source)
1438
self.target._join(self.source, pb, msg, version_ids, ignore_missing)
1439
except errors.WeaveParentMismatch:
1440
self.target._reweave(self.source, pb, msg)
1443
InterVersionedFile.register_optimiser(InterWeave)