1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
|
# Copyright (C) 2005 Canonical Ltd
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""Tree classes, representing directory at point in time.
"""
import os
from collections import deque
from cStringIO import StringIO
import bzrlib
from bzrlib import (
delta,
osutils,
revision as _mod_revision,
conflicts as _mod_conflicts,
symbol_versioning,
)
from bzrlib.decorators import needs_read_lock
from bzrlib.errors import BzrError, BzrCheckError
from bzrlib import errors
from bzrlib.inventory import Inventory, InventoryFile
from bzrlib.inter import InterObject
from bzrlib.osutils import fingerprint_file
import bzrlib.revision
from bzrlib.trace import mutter, note
class Tree(object):
"""Abstract file tree.
There are several subclasses:
* `WorkingTree` exists as files on disk editable by the user.
* `RevisionTree` is a tree as recorded at some point in the past.
Trees contain an `Inventory` object, and also know how to retrieve
file texts mentioned in the inventory, either from a working
directory or from a store.
It is possible for trees to contain files that are not described
in their inventory or vice versa; for this use `filenames()`.
Trees can be compared, etc, regardless of whether they are working
trees or versioned trees.
"""
def changes_from(self, other, want_unchanged=False, specific_files=None,
extra_trees=None, require_versioned=False, include_root=False,
want_unversioned=False):
"""Return a TreeDelta of the changes from other to this tree.
:param other: A tree to compare with.
:param specific_files: An optional list of file paths to restrict the
comparison to. When mapping filenames to ids, all matches in all
trees (including optional extra_trees) are used, and all children of
matched directories are included.
:param want_unchanged: An optional boolean requesting the inclusion of
unchanged entries in the result.
:param extra_trees: An optional list of additional trees to use when
mapping the contents of specific_files (paths) to file_ids.
:param require_versioned: An optional boolean (defaults to False). When
supplied and True all the 'specific_files' must be versioned, or
a PathsNotVersionedError will be thrown.
:param want_unversioned: Scan for unversioned paths.
The comparison will be performed by an InterTree object looked up on
self and other.
"""
# Martin observes that Tree.changes_from returns a TreeDelta and this
# may confuse people, because the class name of the returned object is
# a synonym of the object referenced in the method name.
return InterTree.get(other, self).compare(
want_unchanged=want_unchanged,
specific_files=specific_files,
extra_trees=extra_trees,
require_versioned=require_versioned,
include_root=include_root,
want_unversioned=want_unversioned,
)
@symbol_versioning.deprecated_method(symbol_versioning.one_three)
def _iter_changes(self, *args, **kwargs):
return self.iter_changes(*args, **kwargs)
def iter_changes(self, from_tree, include_unchanged=False,
specific_files=None, pb=None, extra_trees=None,
require_versioned=True, want_unversioned=False):
intertree = InterTree.get(from_tree, self)
return intertree.iter_changes(include_unchanged, specific_files, pb,
extra_trees, require_versioned, want_unversioned=want_unversioned)
def conflicts(self):
"""Get a list of the conflicts in the tree.
Each conflict is an instance of bzrlib.conflicts.Conflict.
"""
return _mod_conflicts.ConflictList()
def extras(self):
"""For trees that can have unversioned files, return all such paths."""
return []
def get_parent_ids(self):
"""Get the parent ids for this tree.
:return: a list of parent ids. [] is returned to indicate
a tree with no parents.
:raises: BzrError if the parents are not known.
"""
raise NotImplementedError(self.get_parent_ids)
def has_filename(self, filename):
"""True if the tree has given filename."""
raise NotImplementedError(self.has_filename)
def has_id(self, file_id):
return self.inventory.has_id(file_id)
__contains__ = has_id
def has_or_had_id(self, file_id):
if file_id == self.inventory.root.file_id:
return True
return self.inventory.has_id(file_id)
def is_ignored(self, filename):
"""Check whether the filename is ignored by this tree.
:param filename: The relative filename within the tree.
:return: True if the filename is ignored.
"""
return False
def __iter__(self):
return iter(self.inventory)
def all_file_ids(self):
"""Iterate through all file ids, including ids for missing files."""
return set(self.inventory)
def id2path(self, file_id):
"""Return the path for a file id.
:raises NoSuchId:
"""
return self.inventory.id2path(file_id)
def is_control_filename(self, filename):
"""True if filename is the name of a control file in this tree.
:param filename: A filename within the tree. This is a relative path
from the root of this tree.
This is true IF and ONLY IF the filename is part of the meta data
that bzr controls in this tree. I.E. a random .bzr directory placed
on disk will not be a control file for this tree.
"""
return self.bzrdir.is_control_filename(filename)
@needs_read_lock
def iter_entries_by_dir(self, specific_file_ids=None):
"""Walk the tree in 'by_dir' order.
This will yield each entry in the tree as a (path, entry) tuple. The
order that they are yielded is: the contents of a directory are
preceeded by the parent of a directory, and all the contents of a
directory are grouped together.
"""
return self.inventory.iter_entries_by_dir(
specific_file_ids=specific_file_ids)
def iter_references(self):
for path, entry in self.iter_entries_by_dir():
if entry.kind == 'tree-reference':
yield path, entry.file_id
def kind(self, file_id):
raise NotImplementedError("Tree subclass %s must implement kind"
% self.__class__.__name__)
def stored_kind(self, file_id):
"""File kind stored for this file_id.
May not match kind on disk for working trees. Always available
for versioned files, even when the file itself is missing.
"""
return self.kind(file_id)
def path_content_summary(self, path):
"""Get a summary of the information about path.
:param path: A relative path within the tree.
:return: A tuple containing kind, size, exec, sha1-or-link.
Kind is always present (see tree.kind()).
size is present if kind is file, None otherwise.
exec is None unless kind is file and the platform supports the 'x'
bit.
sha1-or-link is the link target if kind is symlink, or the sha1 if
it can be obtained without reading the file.
"""
raise NotImplementedError(self.path_content_summary)
def get_reference_revision(self, file_id, path=None):
raise NotImplementedError("Tree subclass %s must implement "
"get_reference_revision"
% self.__class__.__name__)
def _comparison_data(self, entry, path):
"""Return a tuple of kind, executable, stat_value for a file.
entry may be None if there is no inventory entry for the file, but
path must always be supplied.
kind is None if there is no file present (even if an inventory id is
present). executable is False for non-file entries.
"""
raise NotImplementedError(self._comparison_data)
def _file_size(self, entry, stat_value):
raise NotImplementedError(self._file_size)
def _get_inventory(self):
return self._inventory
def get_file(self, file_id, path=None):
"""Return a file object for the file file_id in the tree.
If both file_id and path are defined, it is implementation defined as
to which one is used.
"""
raise NotImplementedError(self.get_file)
def get_file_mtime(self, file_id, path=None):
"""Return the modification time for a file.
:param file_id: The handle for this file.
:param path: The path that this file can be found at.
These must point to the same object.
"""
raise NotImplementedError(self.get_file_mtime)
def get_file_size(self, file_id):
"""Return the size of a file in bytes.
This applies only to regular files. If invoked on directories or
symlinks, it will return None.
:param file_id: The file-id of the file
"""
raise NotImplementedError(self.get_file_size)
def get_file_by_path(self, path):
return self.get_file(self._inventory.path2id(path), path)
def iter_files_bytes(self, desired_files):
"""Iterate through file contents.
Files will not necessarily be returned in the order they occur in
desired_files. No specific order is guaranteed.
Yields pairs of identifier, bytes_iterator. identifier is an opaque
value supplied by the caller as part of desired_files. It should
uniquely identify the file version in the caller's context. (Examples:
an index number or a TreeTransform trans_id.)
bytes_iterator is an iterable of bytestrings for the file. The
kind of iterable and length of the bytestrings are unspecified, but for
this implementation, it is a tuple containing a single bytestring with
the complete text of the file.
:param desired_files: a list of (file_id, identifier) pairs
"""
for file_id, identifier in desired_files:
# We wrap the string in a tuple so that we can return an iterable
# of bytestrings. (Technically, a bytestring is also an iterable
# of bytestrings, but iterating through each character is not
# performant.)
cur_file = (self.get_file_text(file_id),)
yield identifier, cur_file
def get_symlink_target(self, file_id):
"""Get the target for a given file_id.
It is assumed that the caller already knows that file_id is referencing
a symlink.
:param file_id: Handle for the symlink entry.
:return: The path the symlink points to.
"""
raise NotImplementedError(self.get_symlink_target)
def get_root_id(self):
"""Return the file_id for the root of this tree."""
raise NotImplementedError(self.get_root_id)
def annotate_iter(self, file_id,
default_revision=_mod_revision.CURRENT_REVISION):
"""Return an iterator of revision_id, line tuples.
For working trees (and mutable trees in general), the special
revision_id 'current:' will be used for lines that are new in this
tree, e.g. uncommitted changes.
:param file_id: The file to produce an annotated version from
:param default_revision: For lines that don't match a basis, mark them
with this revision id. Not all implementations will make use of
this value.
"""
raise NotImplementedError(self.annotate_iter)
def _get_plan_merge_data(self, file_id, other, base):
from bzrlib import merge, versionedfile
vf = versionedfile._PlanMergeVersionedFile(file_id)
last_revision_a = self._get_file_revision(file_id, vf, 'this:')
last_revision_b = other._get_file_revision(file_id, vf, 'other:')
if base is None:
last_revision_base = None
else:
last_revision_base = base._get_file_revision(file_id, vf, 'base:')
return vf, last_revision_a, last_revision_b, last_revision_base
def plan_file_merge(self, file_id, other, base=None):
"""Generate a merge plan based on annotations.
If the file contains uncommitted changes in this tree, they will be
attributed to the 'current:' pseudo-revision. If the file contains
uncommitted changes in the other tree, they will be assigned to the
'other:' pseudo-revision.
"""
data = self._get_plan_merge_data(file_id, other, base)
vf, last_revision_a, last_revision_b, last_revision_base = data
return vf.plan_merge(last_revision_a, last_revision_b,
last_revision_base)
def plan_file_lca_merge(self, file_id, other, base=None):
"""Generate a merge plan based lca-newness.
If the file contains uncommitted changes in this tree, they will be
attributed to the 'current:' pseudo-revision. If the file contains
uncommitted changes in the other tree, they will be assigned to the
'other:' pseudo-revision.
"""
data = self._get_plan_merge_data(file_id, other, base)
vf, last_revision_a, last_revision_b, last_revision_base = data
return vf.plan_lca_merge(last_revision_a, last_revision_b,
last_revision_base)
def _get_file_revision(self, file_id, vf, tree_revision):
def file_revision(revision_tree):
revision_tree.lock_read()
try:
return revision_tree.inventory[file_id].revision
finally:
revision_tree.unlock()
def iter_parent_trees():
for revision_id in self.get_parent_ids():
try:
yield self.revision_tree(revision_id)
except:
yield self.repository.revision_tree(revision_id)
if getattr(self, '_get_weave', None) is None:
last_revision = tree_revision
parent_revisions = [file_revision(t) for t in iter_parent_trees()]
vf.add_lines(last_revision, parent_revisions,
self.get_file(file_id).readlines())
repo = self.branch.repository
transaction = repo.get_transaction()
base_vf = repo.weave_store.get_weave(file_id, transaction)
else:
last_revision = file_revision(self)
base_vf = self._get_weave(file_id)
vf.fallback_versionedfiles.append(base_vf)
return last_revision
inventory = property(_get_inventory,
doc="Inventory of this Tree")
def _check_retrieved(self, ie, f):
if not __debug__:
return
fp = fingerprint_file(f)
f.seek(0)
if ie.text_size is not None:
if ie.text_size != fp['size']:
raise BzrError("mismatched size for file %r in %r" % (ie.file_id, self._store),
["inventory expects %d bytes" % ie.text_size,
"file is actually %d bytes" % fp['size'],
"store is probably damaged/corrupt"])
if ie.text_sha1 != fp['sha1']:
raise BzrError("wrong SHA-1 for file %r in %r" % (ie.file_id, self._store),
["inventory expects %s" % ie.text_sha1,
"file is actually %s" % fp['sha1'],
"store is probably damaged/corrupt"])
@needs_read_lock
def path2id(self, path):
"""Return the id for path in this tree."""
return self._inventory.path2id(path)
def paths2ids(self, paths, trees=[], require_versioned=True):
"""Return all the ids that can be reached by walking from paths.
Each path is looked up in this tree and any extras provided in
trees, and this is repeated recursively: the children in an extra tree
of a directory that has been renamed under a provided path in this tree
are all returned, even if none exist under a provided path in this
tree, and vice versa.
:param paths: An iterable of paths to start converting to ids from.
Alternatively, if paths is None, no ids should be calculated and None
will be returned. This is offered to make calling the api unconditional
for code that *might* take a list of files.
:param trees: Additional trees to consider.
:param require_versioned: If False, do not raise NotVersionedError if
an element of paths is not versioned in this tree and all of trees.
"""
return find_ids_across_trees(paths, [self] + list(trees), require_versioned)
def print_file(self, file_id):
"""Print file with id `file_id` to stdout."""
import sys
sys.stdout.write(self.get_file_text(file_id))
def lock_read(self):
pass
def revision_tree(self, revision_id):
"""Obtain a revision tree for the revision revision_id.
The intention of this method is to allow access to possibly cached
tree data. Implementors of this method should raise NoSuchRevision if
the tree is not locally available, even if they could obtain the
tree via a repository or some other means. Callers are responsible
for finding the ultimate source for a revision tree.
:param revision_id: The revision_id of the requested tree.
:return: A Tree.
:raises: NoSuchRevision if the tree cannot be obtained.
"""
raise errors.NoSuchRevisionInTree(self, revision_id)
def unknowns(self):
"""What files are present in this tree and unknown.
:return: an iterator over the unknown files.
"""
return iter([])
def unlock(self):
pass
def filter_unversioned_files(self, paths):
"""Filter out paths that are versioned.
:return: set of paths.
"""
# NB: we specifically *don't* call self.has_filename, because for
# WorkingTrees that can indicate files that exist on disk but that
# are not versioned.
pred = self.inventory.has_filename
return set((p for p in paths if not pred(p)))
def walkdirs(self, prefix=""):
"""Walk the contents of this tree from path down.
This yields all the data about the contents of a directory at a time.
After each directory has been yielded, if the caller has mutated the
list to exclude some directories, they are then not descended into.
The data yielded is of the form:
((directory-relpath, directory-path-from-root, directory-fileid),
[(relpath, basename, kind, lstat, path_from_tree_root, file_id,
versioned_kind), ...]),
- directory-relpath is the containing dirs relpath from prefix
- directory-path-from-root is the containing dirs path from /
- directory-fileid is the id of the directory if it is versioned.
- relpath is the relative path within the subtree being walked.
- basename is the basename
- kind is the kind of the file now. If unknonwn then the file is not
present within the tree - but it may be recorded as versioned. See
versioned_kind.
- lstat is the stat data *if* the file was statted.
- path_from_tree_root is the path from the root of the tree.
- file_id is the file_id if the entry is versioned.
- versioned_kind is the kind of the file as last recorded in the
versioning system. If 'unknown' the file is not versioned.
One of 'kind' and 'versioned_kind' must not be 'unknown'.
:param prefix: Start walking from prefix within the tree rather than
at the root. This allows one to walk a subtree but get paths that are
relative to a tree rooted higher up.
:return: an iterator over the directory data.
"""
raise NotImplementedError(self.walkdirs)
class EmptyTree(Tree):
def __init__(self):
self._inventory = Inventory(root_id=None)
symbol_versioning.warn('EmptyTree is deprecated as of bzr 0.9 please'
' use repository.revision_tree instead.',
DeprecationWarning, stacklevel=2)
def get_parent_ids(self):
return []
def get_symlink_target(self, file_id):
return None
def has_filename(self, filename):
return False
def kind(self, file_id):
assert self._inventory[file_id].kind == "directory"
return "directory"
def list_files(self, include_root=False):
return iter([])
def __contains__(self, file_id):
return (file_id in self._inventory)
def get_file_sha1(self, file_id, path=None, stat_value=None):
return None
######################################################################
# diff
# TODO: Merge these two functions into a single one that can operate
# on either a whole tree or a set of files.
# TODO: Return the diff in order by filename, not by category or in
# random order. Can probably be done by lock-stepping through the
# filenames from both trees.
def file_status(filename, old_tree, new_tree):
"""Return single-letter status, old and new names for a file.
The complexity here is in deciding how to represent renames;
many complex cases are possible.
"""
old_inv = old_tree.inventory
new_inv = new_tree.inventory
new_id = new_inv.path2id(filename)
old_id = old_inv.path2id(filename)
if not new_id and not old_id:
# easy: doesn't exist in either; not versioned at all
if new_tree.is_ignored(filename):
return 'I', None, None
else:
return '?', None, None
elif new_id:
# There is now a file of this name, great.
pass
else:
# There is no longer a file of this name, but we can describe
# what happened to the file that used to have
# this name. There are two possibilities: either it was
# deleted entirely, or renamed.
assert old_id
if new_inv.has_id(old_id):
return 'X', old_inv.id2path(old_id), new_inv.id2path(old_id)
else:
return 'D', old_inv.id2path(old_id), None
# if the file_id is new in this revision, it is added
if new_id and not old_inv.has_id(new_id):
return 'A'
# if there used to be a file of this name, but that ID has now
# disappeared, it is deleted
if old_id and not new_inv.has_id(old_id):
return 'D'
return 'wtf?'
def find_renames(old_inv, new_inv):
for file_id in old_inv:
if file_id not in new_inv:
continue
old_name = old_inv.id2path(file_id)
new_name = new_inv.id2path(file_id)
if old_name != new_name:
yield (old_name, new_name)
def find_ids_across_trees(filenames, trees, require_versioned=True):
"""Find the ids corresponding to specified filenames.
All matches in all trees will be used, and all children of matched
directories will be used.
:param filenames: The filenames to find file_ids for (if None, returns
None)
:param trees: The trees to find file_ids within
:param require_versioned: if true, all specified filenames must occur in
at least one tree.
:return: a set of file ids for the specified filenames and their children.
"""
if not filenames:
return None
specified_path_ids = _find_ids_across_trees(filenames, trees,
require_versioned)
return _find_children_across_trees(specified_path_ids, trees)
def _find_ids_across_trees(filenames, trees, require_versioned):
"""Find the ids corresponding to specified filenames.
All matches in all trees will be used, but subdirectories are not scanned.
:param filenames: The filenames to find file_ids for
:param trees: The trees to find file_ids within
:param require_versioned: if true, all specified filenames must occur in
at least one tree.
:return: a set of file ids for the specified filenames
"""
not_versioned = []
interesting_ids = set()
for tree_path in filenames:
not_found = True
for tree in trees:
file_id = tree.path2id(tree_path)
if file_id is not None:
interesting_ids.add(file_id)
not_found = False
if not_found:
not_versioned.append(tree_path)
if len(not_versioned) > 0 and require_versioned:
raise errors.PathsNotVersionedError(not_versioned)
return interesting_ids
def _find_children_across_trees(specified_ids, trees):
"""Return a set including specified ids and their children.
All matches in all trees will be used.
:param trees: The trees to find file_ids within
:return: a set containing all specified ids and their children
"""
interesting_ids = set(specified_ids)
pending = interesting_ids
# now handle children of interesting ids
# we loop so that we handle all children of each id in both trees
while len(pending) > 0:
new_pending = set()
for file_id in pending:
for tree in trees:
if not tree.has_id(file_id):
continue
entry = tree.inventory[file_id]
for child in getattr(entry, 'children', {}).itervalues():
if child.file_id not in interesting_ids:
new_pending.add(child.file_id)
interesting_ids.update(new_pending)
pending = new_pending
return interesting_ids
class InterTree(InterObject):
"""This class represents operations taking place between two Trees.
Its instances have methods like 'compare' and contain references to the
source and target trees these operations are to be carried out on.
Clients of bzrlib should not need to use InterTree directly, rather they
should use the convenience methods on Tree such as 'Tree.compare()' which
will pass through to InterTree as appropriate.
"""
_optimisers = []
@needs_read_lock
def compare(self, want_unchanged=False, specific_files=None,
extra_trees=None, require_versioned=False, include_root=False,
want_unversioned=False):
"""Return the changes from source to target.
:return: A TreeDelta.
:param specific_files: An optional list of file paths to restrict the
comparison to. When mapping filenames to ids, all matches in all
trees (including optional extra_trees) are used, and all children of
matched directories are included.
:param want_unchanged: An optional boolean requesting the inclusion of
unchanged entries in the result.
:param extra_trees: An optional list of additional trees to use when
mapping the contents of specific_files (paths) to file_ids.
:param require_versioned: An optional boolean (defaults to False). When
supplied and True all the 'specific_files' must be versioned, or
a PathsNotVersionedError will be thrown.
:param want_unversioned: Scan for unversioned paths.
"""
# NB: show_status depends on being able to pass in non-versioned files
# and report them as unknown
trees = (self.source,)
if extra_trees is not None:
trees = trees + tuple(extra_trees)
# target is usually the newer tree:
specific_file_ids = self.target.paths2ids(specific_files, trees,
require_versioned=require_versioned)
if specific_files and not specific_file_ids:
# All files are unversioned, so just return an empty delta
# _compare_trees would think we want a complete delta
result = delta.TreeDelta()
fake_entry = InventoryFile('unused', 'unused', 'unused')
result.unversioned = [(path, None,
self.target._comparison_data(fake_entry, path)[0]) for path in
specific_files]
return result
return delta._compare_trees(self.source, self.target, want_unchanged,
specific_files, include_root, extra_trees=extra_trees,
require_versioned=require_versioned,
want_unversioned=want_unversioned)
def iter_changes(self, include_unchanged=False,
specific_files=None, pb=None, extra_trees=[],
require_versioned=True, want_unversioned=False):
"""Generate an iterator of changes between trees.
A tuple is returned:
(file_id, (path_in_source, path_in_target),
changed_content, versioned, parent, name, kind,
executable)
Changed_content is True if the file's content has changed. This
includes changes to its kind, and to a symlink's target.
versioned, parent, name, kind, executable are tuples of (from, to).
If a file is missing in a tree, its kind is None.
Iteration is done in parent-to-child order, relative to the target
tree.
There is no guarantee that all paths are in sorted order: the
requirement to expand the search due to renames may result in children
that should be found early being found late in the search, after
lexically later results have been returned.
:param require_versioned: Raise errors.PathsNotVersionedError if a
path in the specific_files list is not versioned in one of
source, target or extra_trees.
:param want_unversioned: Should unversioned files be returned in the
output. An unversioned file is defined as one with (False, False)
for the versioned pair.
"""
result = []
lookup_trees = [self.source]
if extra_trees:
lookup_trees.extend(extra_trees)
if specific_files == []:
specific_file_ids = []
else:
specific_file_ids = self.target.paths2ids(specific_files,
lookup_trees, require_versioned=require_versioned)
if want_unversioned:
all_unversioned = sorted([(p.split('/'), p) for p in
self.target.extras()
if specific_files is None or
osutils.is_inside_any(specific_files, p)])
all_unversioned = deque(all_unversioned)
else:
all_unversioned = deque()
to_paths = {}
from_entries_by_dir = list(self.source.inventory.iter_entries_by_dir(
specific_file_ids=specific_file_ids))
from_data = dict((e.file_id, (p, e)) for p, e in from_entries_by_dir)
to_entries_by_dir = list(self.target.inventory.iter_entries_by_dir(
specific_file_ids=specific_file_ids))
num_entries = len(from_entries_by_dir) + len(to_entries_by_dir)
entry_count = 0
# the unversioned path lookup only occurs on real trees - where there
# can be extras. So the fake_entry is solely used to look up
# executable it values when execute is not supported.
fake_entry = InventoryFile('unused', 'unused', 'unused')
for to_path, to_entry in to_entries_by_dir:
while all_unversioned and all_unversioned[0][0] < to_path.split('/'):
unversioned_path = all_unversioned.popleft()
to_kind, to_executable, to_stat = \
self.target._comparison_data(fake_entry, unversioned_path[1])
yield (None, (None, unversioned_path[1]), True, (False, False),
(None, None),
(None, unversioned_path[0][-1]),
(None, to_kind),
(None, to_executable))
file_id = to_entry.file_id
to_paths[file_id] = to_path
entry_count += 1
changed_content = False
from_path, from_entry = from_data.get(file_id, (None, None))
from_versioned = (from_entry is not None)
if from_entry is not None:
from_versioned = True
from_name = from_entry.name
from_parent = from_entry.parent_id
from_kind, from_executable, from_stat = \
self.source._comparison_data(from_entry, from_path)
entry_count += 1
else:
from_versioned = False
from_kind = None
from_parent = None
from_name = None
from_executable = None
versioned = (from_versioned, True)
to_kind, to_executable, to_stat = \
self.target._comparison_data(to_entry, to_path)
kind = (from_kind, to_kind)
if kind[0] != kind[1]:
changed_content = True
elif from_kind == 'file':
from_size = self.source._file_size(from_entry, from_stat)
to_size = self.target._file_size(to_entry, to_stat)
if from_size != to_size:
changed_content = True
elif (self.source.get_file_sha1(file_id, from_path, from_stat) !=
self.target.get_file_sha1(file_id, to_path, to_stat)):
changed_content = True
elif from_kind == 'symlink':
if (self.source.get_symlink_target(file_id) !=
self.target.get_symlink_target(file_id)):
changed_content = True
elif from_kind == 'tree-reference':
if (self.source.get_reference_revision(file_id, from_path)
!= self.target.get_reference_revision(file_id, to_path)):
changed_content = True
parent = (from_parent, to_entry.parent_id)
name = (from_name, to_entry.name)
executable = (from_executable, to_executable)
if pb is not None:
pb.update('comparing files', entry_count, num_entries)
if (changed_content is not False or versioned[0] != versioned[1]
or parent[0] != parent[1] or name[0] != name[1] or
executable[0] != executable[1] or include_unchanged):
yield (file_id, (from_path, to_path), changed_content,
versioned, parent, name, kind, executable)
while all_unversioned:
# yield any trailing unversioned paths
unversioned_path = all_unversioned.popleft()
to_kind, to_executable, to_stat = \
self.target._comparison_data(fake_entry, unversioned_path[1])
yield (None, (None, unversioned_path[1]), True, (False, False),
(None, None),
(None, unversioned_path[0][-1]),
(None, to_kind),
(None, to_executable))
def get_to_path(to_entry):
if to_entry.parent_id is None:
to_path = '' # the root
else:
if to_entry.parent_id not in to_paths:
# recurse up
return get_to_path(self.target.inventory[to_entry.parent_id])
to_path = osutils.pathjoin(to_paths[to_entry.parent_id],
to_entry.name)
to_paths[to_entry.file_id] = to_path
return to_path
for path, from_entry in from_entries_by_dir:
file_id = from_entry.file_id
if file_id in to_paths:
# already returned
continue
if not file_id in self.target.inventory:
# common case - paths we have not emitted are not present in
# target.
to_path = None
else:
to_path = get_to_path(self.target.inventory[file_id])
entry_count += 1
if pb is not None:
pb.update('comparing files', entry_count, num_entries)
versioned = (True, False)
parent = (from_entry.parent_id, None)
name = (from_entry.name, None)
from_kind, from_executable, stat_value = \
self.source._comparison_data(from_entry, path)
kind = (from_kind, None)
executable = (from_executable, None)
changed_content = True
# the parent's path is necessarily known at this point.
yield(file_id, (path, to_path), changed_content, versioned, parent,
name, kind, executable)
# This was deprecated before 0.12, but did not have an official warning
@symbol_versioning.deprecated_function(symbol_versioning.zero_twelve)
def RevisionTree(*args, **kwargs):
"""RevisionTree has moved to bzrlib.revisiontree.RevisionTree()
Accessing it as bzrlib.tree.RevisionTree has been deprecated as of
bzr 0.12.
"""
from bzrlib.revisiontree import RevisionTree as _RevisionTree
return _RevisionTree(*args, **kwargs)
|