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  • Committer: Andrew Bennetts
  • Date: 2010-01-12 03:53:21 UTC
  • mfrom: (4948 +trunk)
  • mto: This revision was merged to the branch mainline in revision 4964.
  • Revision ID: andrew.bennetts@canonical.com-20100112035321-hofpz5p10224ryj3
Merge lp:bzr, resolving conflicts.

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1
 
# Copyright (C) 2006-2011 Canonical Ltd
 
1
# Copyright (C) 2006, 2007, 2008, 2009 Canonical Ltd
2
2
#
3
3
# This program is free software; you can redistribute it and/or modify
4
4
# it under the terms of the GNU General Public License as published by
19
19
from stat import S_ISREG, S_IEXEC
20
20
import time
21
21
 
22
 
from bzrlib import (
23
 
    errors,
24
 
    lazy_import,
25
 
    registry,
26
 
    trace,
27
 
    tree,
28
 
    )
29
 
lazy_import.lazy_import(globals(), """
 
22
from bzrlib.lazy_import import lazy_import
 
23
lazy_import(globals(), """
30
24
from bzrlib import (
31
25
    annotate,
32
26
    bencode,
33
27
    bzrdir,
34
 
    commit,
35
 
    conflicts,
36
28
    delta,
37
29
    errors,
38
30
    inventory,
39
31
    multiparent,
40
32
    osutils,
41
33
    revision as _mod_revision,
42
 
    ui,
43
 
    urlutils,
44
34
    )
45
35
""")
46
36
from bzrlib.errors import (DuplicateKey, MalformedTransform, NoSuchFile,
47
 
                           ReusingTransform, CantMoveRoot,
 
37
                           ReusingTransform, NotVersionedError, CantMoveRoot,
48
38
                           ExistingLimbo, ImmortalLimbo, NoFinalPath,
49
39
                           UnableCreateSymlink)
50
40
from bzrlib.filters import filtered_output_bytes, ContentFilterContext
 
41
from bzrlib.inventory import InventoryEntry
51
42
from bzrlib.osutils import (
52
43
    delete_any,
53
44
    file_kind,
54
45
    has_symlinks,
 
46
    lexists,
55
47
    pathjoin,
56
48
    sha_file,
57
49
    splitpath,
58
50
    supports_executable,
59
 
    )
60
 
from bzrlib.progress import ProgressPhase
 
51
)
 
52
from bzrlib.progress import DummyProgress, ProgressPhase
61
53
from bzrlib.symbol_versioning import (
62
 
    deprecated_function,
63
 
    deprecated_in,
64
 
    deprecated_method,
65
 
    )
 
54
        deprecated_function,
 
55
        deprecated_in,
 
56
        )
 
57
from bzrlib.trace import mutter, warning
 
58
from bzrlib import tree
 
59
import bzrlib.ui
 
60
import bzrlib.urlutils as urlutils
66
61
 
67
62
 
68
63
ROOT_PARENT = "root-parent"
69
64
 
 
65
 
70
66
def unique_add(map, key, value):
71
67
    if key in map:
72
68
        raise DuplicateKey(key=key)
73
69
    map[key] = value
74
70
 
75
71
 
76
 
 
77
72
class _TransformResults(object):
78
73
    def __init__(self, modified_paths, rename_count):
79
74
        object.__init__(self)
84
79
class TreeTransformBase(object):
85
80
    """The base class for TreeTransform and its kin."""
86
81
 
87
 
    def __init__(self, tree, pb=None,
 
82
    def __init__(self, tree, pb=DummyProgress(),
88
83
                 case_sensitive=True):
89
84
        """Constructor.
90
85
 
91
86
        :param tree: The tree that will be transformed, but not necessarily
92
87
            the output tree.
93
 
        :param pb: ignored
 
88
        :param pb: A ProgressTask indicating how much progress is being made
94
89
        :param case_sensitive: If True, the target of the transform is
95
90
            case sensitive, not just case preserving.
96
91
        """
103
98
        self._new_parent = {}
104
99
        # mapping of trans_id with new contents -> new file_kind
105
100
        self._new_contents = {}
106
 
        # mapping of trans_id => (sha1 of content, stat_value)
107
 
        self._observed_sha1s = {}
108
101
        # Set of trans_ids whose contents will be removed
109
102
        self._removed_contents = set()
110
103
        # Mapping of trans_id -> new execute-bit value
129
122
            self._new_root = self.trans_id_tree_file_id(root_id)
130
123
        else:
131
124
            self._new_root = None
132
 
        # Indicator of whether the transform has been applied
 
125
        # Indictor of whether the transform has been applied
133
126
        self._done = False
134
127
        # A progress bar
135
128
        self._pb = pb
138
131
        # A counter of how many files have been renamed
139
132
        self.rename_count = 0
140
133
 
141
 
    def __enter__(self):
142
 
        """Support Context Manager API."""
143
 
        return self
144
 
 
145
 
    def __exit__(self, exc_type, exc_val, exc_tb):
146
 
        """Support Context Manager API."""
147
 
        self.finalize()
148
 
 
149
134
    def finalize(self):
150
135
        """Release the working tree lock, if held.
151
136
 
177
162
 
178
163
    def adjust_path(self, name, parent, trans_id):
179
164
        """Change the path that is assigned to a transaction id."""
180
 
        if parent is None:
181
 
            raise ValueError("Parent trans-id may not be None")
182
165
        if trans_id == self._new_root:
183
166
            raise CantMoveRoot
184
167
        self._new_name[trans_id] = name
185
168
        self._new_parent[trans_id] = parent
 
169
        if parent == ROOT_PARENT:
 
170
            if self._new_root is not None:
 
171
                raise ValueError("Cannot have multiple roots.")
 
172
            self._new_root = trans_id
186
173
 
187
174
    def adjust_root_path(self, name, parent):
188
175
        """Emulate moving the root by moving all children, instead.
216
203
        self.version_file(old_root_file_id, old_root)
217
204
        self.unversion_file(self._new_root)
218
205
 
219
 
    def fixup_new_roots(self):
220
 
        """Reinterpret requests to change the root directory
221
 
 
222
 
        Instead of creating a root directory, or moving an existing directory,
223
 
        all the attributes and children of the new root are applied to the
224
 
        existing root directory.
225
 
 
226
 
        This means that the old root trans-id becomes obsolete, so it is
227
 
        recommended only to invoke this after the root trans-id has become
228
 
        irrelevant.
229
 
 
230
 
        """
231
 
        new_roots = [k for k, v in self._new_parent.iteritems() if v is
232
 
                     ROOT_PARENT]
233
 
        if len(new_roots) < 1:
234
 
            return
235
 
        if len(new_roots) != 1:
236
 
            raise ValueError('A tree cannot have two roots!')
237
 
        if self._new_root is None:
238
 
            self._new_root = new_roots[0]
239
 
            return
240
 
        old_new_root = new_roots[0]
241
 
        # unversion the new root's directory.
242
 
        if self.final_kind(self._new_root) is None:
243
 
            file_id = self.final_file_id(old_new_root)
244
 
        else:
245
 
            file_id = self.final_file_id(self._new_root)
246
 
        if old_new_root in self._new_id:
247
 
            self.cancel_versioning(old_new_root)
248
 
        else:
249
 
            self.unversion_file(old_new_root)
250
 
        # if, at this stage, root still has an old file_id, zap it so we can
251
 
        # stick a new one in.
252
 
        if (self.tree_file_id(self._new_root) is not None and
253
 
            self._new_root not in self._removed_id):
254
 
            self.unversion_file(self._new_root)
255
 
        if file_id is not None:
256
 
            self.version_file(file_id, self._new_root)
257
 
 
258
 
        # Now move children of new root into old root directory.
259
 
        # Ensure all children are registered with the transaction, but don't
260
 
        # use directly-- some tree children have new parents
261
 
        list(self.iter_tree_children(old_new_root))
262
 
        # Move all children of new root into old root directory.
263
 
        for child in self.by_parent().get(old_new_root, []):
264
 
            self.adjust_path(self.final_name(child), self._new_root, child)
265
 
 
266
 
        # Ensure old_new_root has no directory.
267
 
        if old_new_root in self._new_contents:
268
 
            self.cancel_creation(old_new_root)
269
 
        else:
270
 
            self.delete_contents(old_new_root)
271
 
 
272
 
        # prevent deletion of root directory.
273
 
        if self._new_root in self._removed_contents:
274
 
            self.cancel_deletion(self._new_root)
275
 
 
276
 
        # destroy path info for old_new_root.
277
 
        del self._new_parent[old_new_root]
278
 
        del self._new_name[old_new_root]
279
 
 
280
206
    def trans_id_tree_file_id(self, inventory_id):
281
207
        """Determine the transaction id of a working tree file.
282
208
 
328
254
 
329
255
    def delete_contents(self, trans_id):
330
256
        """Schedule the contents of a path entry for deletion"""
331
 
        kind = self.tree_kind(trans_id)
332
 
        if kind is not None:
333
 
            self._removed_contents.add(trans_id)
 
257
        self.tree_kind(trans_id)
 
258
        self._removed_contents.add(trans_id)
334
259
 
335
260
    def cancel_deletion(self, trans_id):
336
261
        """Cancel a scheduled deletion"""
393
318
        return sorted(FinalPaths(self).get_paths(new_ids))
394
319
 
395
320
    def _inventory_altered(self):
396
 
        """Determine which trans_ids need new Inventory entries.
397
 
 
398
 
        An new entry is needed when anything that would be reflected by an
399
 
        inventory entry changes, including file name, file_id, parent file_id,
400
 
        file kind, and the execute bit.
401
 
 
402
 
        Some care is taken to return entries with real changes, not cases
403
 
        where the value is deleted and then restored to its original value,
404
 
        but some actually unchanged values may be returned.
405
 
 
406
 
        :returns: A list of (path, trans_id) for all items requiring an
407
 
            inventory change. Ordered by path.
408
 
        """
409
 
        changed_ids = set()
410
 
        # Find entries whose file_ids are new (or changed).
411
 
        new_file_id = set(t for t in self._new_id
412
 
                          if self._new_id[t] != self.tree_file_id(t))
413
 
        for id_set in [self._new_name, self._new_parent, new_file_id,
 
321
        """Get the trans_ids and paths of files needing new inv entries."""
 
322
        new_ids = set()
 
323
        for id_set in [self._new_name, self._new_parent, self._new_id,
414
324
                       self._new_executability]:
415
 
            changed_ids.update(id_set)
416
 
        # removing implies a kind change
 
325
            new_ids.update(id_set)
417
326
        changed_kind = set(self._removed_contents)
418
 
        # so does adding
419
327
        changed_kind.intersection_update(self._new_contents)
420
 
        # Ignore entries that are already known to have changed.
421
 
        changed_kind.difference_update(changed_ids)
422
 
        #  to keep only the truly changed ones
423
 
        changed_kind = (t for t in changed_kind
424
 
                        if self.tree_kind(t) != self.final_kind(t))
425
 
        # all kind changes will alter the inventory
426
 
        changed_ids.update(changed_kind)
427
 
        # To find entries with changed parent_ids, find parents which existed,
428
 
        # but changed file_id.
429
 
        changed_file_id = set(t for t in new_file_id if t in self._removed_id)
430
 
        # Now add all their children to the set.
431
 
        for parent_trans_id in new_file_id:
432
 
            changed_ids.update(self.iter_tree_children(parent_trans_id))
433
 
        return sorted(FinalPaths(self).get_paths(changed_ids))
 
328
        changed_kind.difference_update(new_ids)
 
329
        changed_kind = (t for t in changed_kind if self.tree_kind(t) !=
 
330
                        self.final_kind(t))
 
331
        new_ids.update(changed_kind)
 
332
        return sorted(FinalPaths(self).get_paths(new_ids))
434
333
 
435
334
    def final_kind(self, trans_id):
436
335
        """Determine the final file kind, after any changes applied.
437
336
 
438
 
        :return: None if the file does not exist/has no contents.  (It is
439
 
            conceivable that a path would be created without the corresponding
440
 
            contents insertion command)
 
337
        Raises NoSuchFile if the file does not exist/has no contents.
 
338
        (It is conceivable that a path would be created without the
 
339
        corresponding contents insertion command)
441
340
        """
442
341
        if trans_id in self._new_contents:
443
342
            return self._new_contents[trans_id]
444
343
        elif trans_id in self._removed_contents:
445
 
            return None
 
344
            raise NoSuchFile(None)
446
345
        else:
447
346
            return self.tree_kind(trans_id)
448
347
 
561
460
        for trans_id in self._removed_id:
562
461
            file_id = self.tree_file_id(trans_id)
563
462
            if file_id is not None:
564
 
                # XXX: This seems like something that should go via a different
565
 
                #      indirection.
566
463
                if self._tree.inventory[file_id].kind == 'directory':
567
464
                    parents.append(trans_id)
568
465
            elif self.tree_kind(trans_id) == 'directory':
572
469
            # ensure that all children are registered with the transaction
573
470
            list(self.iter_tree_children(parent_id))
574
471
 
575
 
    @deprecated_method(deprecated_in((2, 3, 0)))
576
472
    def has_named_child(self, by_parent, parent_id, name):
577
 
        return self._has_named_child(
578
 
            name, parent_id, known_children=by_parent.get(parent_id, []))
579
 
 
580
 
    def _has_named_child(self, name, parent_id, known_children):
581
 
        """Does a parent already have a name child.
582
 
 
583
 
        :param name: The searched for name.
584
 
 
585
 
        :param parent_id: The parent for which the check is made.
586
 
 
587
 
        :param known_children: The already known children. This should have
588
 
            been recently obtained from `self.by_parent.get(parent_id)`
589
 
            (or will be if None is passed).
590
 
        """
591
 
        if known_children is None:
592
 
            known_children = self.by_parent().get(parent_id, [])
593
 
        for child in known_children:
 
473
        try:
 
474
            children = by_parent[parent_id]
 
475
        except KeyError:
 
476
            children = []
 
477
        for child in children:
594
478
            if self.final_name(child) == name:
595
479
                return True
596
 
        parent_path = self._tree_id_paths.get(parent_id, None)
597
 
        if parent_path is None:
598
 
            # No parent... no children
 
480
        try:
 
481
            path = self._tree_id_paths[parent_id]
 
482
        except KeyError:
599
483
            return False
600
 
        child_path = joinpath(parent_path, name)
601
 
        child_id = self._tree_path_ids.get(child_path, None)
 
484
        childpath = joinpath(path, name)
 
485
        child_id = self._tree_path_ids.get(childpath)
602
486
        if child_id is None:
603
 
            # Not known by the tree transform yet, check the filesystem
604
 
            return osutils.lexists(self._tree.abspath(child_path))
 
487
            return lexists(self._tree.abspath(childpath))
605
488
        else:
606
 
            raise AssertionError('child_id is missing: %s, %s, %s'
607
 
                                 % (name, parent_id, child_id))
608
 
 
609
 
    def _available_backup_name(self, name, target_id):
610
 
        """Find an available backup name.
611
 
 
612
 
        :param name: The basename of the file.
613
 
 
614
 
        :param target_id: The directory trans_id where the backup should 
615
 
            be placed.
616
 
        """
617
 
        known_children = self.by_parent().get(target_id, [])
618
 
        return osutils.available_backup_name(
619
 
            name,
620
 
            lambda base: self._has_named_child(
621
 
                base, target_id, known_children))
 
489
            if self.final_parent(child_id) != parent_id:
 
490
                return False
 
491
            if child_id in self._removed_contents:
 
492
                # XXX What about dangling file-ids?
 
493
                return False
 
494
            else:
 
495
                return True
622
496
 
623
497
    def _parent_loops(self):
624
498
        """No entry should be its own ancestor"""
659
533
        """
660
534
        conflicts = []
661
535
        for trans_id in self._new_id.iterkeys():
662
 
            kind = self.final_kind(trans_id)
663
 
            if kind is None:
 
536
            try:
 
537
                kind = self.final_kind(trans_id)
 
538
            except NoSuchFile:
664
539
                conflicts.append(('versioning no contents', trans_id))
665
540
                continue
666
 
            if not inventory.InventoryEntry.versionable_kind(kind):
 
541
            if not InventoryEntry.versionable_kind(kind):
667
542
                conflicts.append(('versioning bad kind', trans_id, kind))
668
543
        return conflicts
669
544
 
680
555
            if self.final_file_id(trans_id) is None:
681
556
                conflicts.append(('unversioned executability', trans_id))
682
557
            else:
683
 
                if self.final_kind(trans_id) != "file":
 
558
                try:
 
559
                    non_file = self.final_kind(trans_id) != "file"
 
560
                except NoSuchFile:
 
561
                    non_file = True
 
562
                if non_file is True:
684
563
                    conflicts.append(('non-file executability', trans_id))
685
564
        return conflicts
686
565
 
688
567
        """Check for overwrites (not permitted on Win32)"""
689
568
        conflicts = []
690
569
        for trans_id in self._new_contents:
691
 
            if self.tree_kind(trans_id) is None:
 
570
            try:
 
571
                self.tree_kind(trans_id)
 
572
            except NoSuchFile:
692
573
                continue
693
574
            if trans_id not in self._removed_contents:
694
575
                conflicts.append(('overwrite', trans_id,
701
582
        if (self._new_name, self._new_parent) == ({}, {}):
702
583
            return conflicts
703
584
        for children in by_parent.itervalues():
704
 
            name_ids = []
705
 
            for child_tid in children:
706
 
                name = self.final_name(child_tid)
707
 
                if name is not None:
708
 
                    # Keep children only if they still exist in the end
709
 
                    if not self._case_sensitive_target:
710
 
                        name = name.lower()
711
 
                    name_ids.append((name, child_tid))
 
585
            name_ids = [(self.final_name(t), t) for t in children]
 
586
            if not self._case_sensitive_target:
 
587
                name_ids = [(n.lower(), t) for n, t in name_ids]
712
588
            name_ids.sort()
713
589
            last_name = None
714
590
            last_trans_id = None
715
591
            for name, trans_id in name_ids:
716
 
                kind = self.final_kind(trans_id)
 
592
                try:
 
593
                    kind = self.final_kind(trans_id)
 
594
                except NoSuchFile:
 
595
                    kind = None
717
596
                file_id = self.final_file_id(trans_id)
718
597
                if kind is None and file_id is None:
719
598
                    continue
738
617
        return conflicts
739
618
 
740
619
    def _parent_type_conflicts(self, by_parent):
741
 
        """Children must have a directory parent"""
 
620
        """parents must have directory 'contents'."""
742
621
        conflicts = []
743
622
        for parent_id, children in by_parent.iteritems():
744
623
            if parent_id is ROOT_PARENT:
745
624
                continue
746
 
            no_children = True
747
 
            for child_id in children:
748
 
                if self.final_kind(child_id) is not None:
749
 
                    no_children = False
750
 
                    break
751
 
            if no_children:
 
625
            if not self._any_contents(children):
752
626
                continue
753
 
            # There is at least a child, so we need an existing directory to
754
 
            # contain it.
755
 
            kind = self.final_kind(parent_id)
 
627
            for child in children:
 
628
                try:
 
629
                    self.final_kind(child)
 
630
                except NoSuchFile:
 
631
                    continue
 
632
            try:
 
633
                kind = self.final_kind(parent_id)
 
634
            except NoSuchFile:
 
635
                kind = None
756
636
            if kind is None:
757
 
                # The directory will be deleted
758
637
                conflicts.append(('missing parent', parent_id))
759
638
            elif kind != "directory":
760
 
                # Meh, we need a *directory* to put something in it
761
639
                conflicts.append(('non-directory parent', parent_id))
762
640
        return conflicts
763
641
 
 
642
    def _any_contents(self, trans_ids):
 
643
        """Return true if any of the trans_ids, will have contents."""
 
644
        for trans_id in trans_ids:
 
645
            try:
 
646
                kind = self.final_kind(trans_id)
 
647
            except NoSuchFile:
 
648
                continue
 
649
            return True
 
650
        return False
 
651
 
764
652
    def _set_executability(self, path, trans_id):
765
653
        """Set the executability of versioned files """
766
654
        if supports_executable():
788
676
        return trans_id
789
677
 
790
678
    def new_file(self, name, parent_id, contents, file_id=None,
791
 
                 executable=None, sha1=None):
 
679
                 executable=None):
792
680
        """Convenience method to create files.
793
681
 
794
682
        name is the name of the file to create.
801
689
        trans_id = self._new_entry(name, parent_id, file_id)
802
690
        # TODO: rather than scheduling a set_executable call,
803
691
        # have create_file create the file with the right mode.
804
 
        self.create_file(contents, trans_id, sha1=sha1)
 
692
        self.create_file(contents, trans_id)
805
693
        if executable is not None:
806
694
            self.set_executability(executable, trans_id)
807
695
        return trans_id
830
718
        self.create_symlink(target, trans_id)
831
719
        return trans_id
832
720
 
833
 
    def new_orphan(self, trans_id, parent_id):
834
 
        """Schedule an item to be orphaned.
835
 
 
836
 
        When a directory is about to be removed, its children, if they are not
837
 
        versioned are moved out of the way: they don't have a parent anymore.
838
 
 
839
 
        :param trans_id: The trans_id of the existing item.
840
 
        :param parent_id: The parent trans_id of the item.
841
 
        """
842
 
        raise NotImplementedError(self.new_orphan)
843
 
 
844
 
    def _get_potential_orphans(self, dir_id):
845
 
        """Find the potential orphans in a directory.
846
 
 
847
 
        A directory can't be safely deleted if there are versioned files in it.
848
 
        If all the contained files are unversioned then they can be orphaned.
849
 
 
850
 
        The 'None' return value means that the directory contains at least one
851
 
        versioned file and should not be deleted.
852
 
 
853
 
        :param dir_id: The directory trans id.
854
 
 
855
 
        :return: A list of the orphan trans ids or None if at least one
856
 
             versioned file is present.
857
 
        """
858
 
        orphans = []
859
 
        # Find the potential orphans, stop if one item should be kept
860
 
        for child_tid in self.by_parent()[dir_id]:
861
 
            if child_tid in self._removed_contents:
862
 
                # The child is removed as part of the transform. Since it was
863
 
                # versioned before, it's not an orphan
864
 
                continue
865
 
            elif self.final_file_id(child_tid) is None:
866
 
                # The child is not versioned
867
 
                orphans.append(child_tid)
868
 
            else:
869
 
                # We have a versioned file here, searching for orphans is
870
 
                # meaningless.
871
 
                orphans = None
872
 
                break
873
 
        return orphans
874
 
 
875
721
    def _affected_ids(self):
876
722
        """Return the set of transform ids affected by the transform"""
877
723
        trans_ids = set(self._removed_id)
936
782
        Return a (name, parent, kind, executable) tuple
937
783
        """
938
784
        to_name = self.final_name(to_trans_id)
939
 
        to_kind = self.final_kind(to_trans_id)
 
785
        try:
 
786
            to_kind = self.final_kind(to_trans_id)
 
787
        except NoSuchFile:
 
788
            to_kind = None
940
789
        to_parent = self.final_file_id(self.final_parent(to_trans_id))
941
790
        if to_trans_id in self._new_executability:
942
791
            to_executable = self._new_executability[to_trans_id]
1016
865
        """
1017
866
        return _PreviewTree(self)
1018
867
 
1019
 
    def commit(self, branch, message, merge_parents=None, strict=False,
1020
 
               timestamp=None, timezone=None, committer=None, authors=None,
1021
 
               revprops=None, revision_id=None):
 
868
    def commit(self, branch, message, merge_parents=None, strict=False):
1022
869
        """Commit the result of this TreeTransform to a branch.
1023
870
 
1024
871
        :param branch: The branch to commit to.
1025
872
        :param message: The message to attach to the commit.
1026
 
        :param merge_parents: Additional parent revision-ids specified by
1027
 
            pending merges.
1028
 
        :param strict: If True, abort the commit if there are unversioned
1029
 
            files.
1030
 
        :param timestamp: if not None, seconds-since-epoch for the time and
1031
 
            date.  (May be a float.)
1032
 
        :param timezone: Optional timezone for timestamp, as an offset in
1033
 
            seconds.
1034
 
        :param committer: Optional committer in email-id format.
1035
 
            (e.g. "J Random Hacker <jrandom@example.com>")
1036
 
        :param authors: Optional list of authors in email-id format.
1037
 
        :param revprops: Optional dictionary of revision properties.
1038
 
        :param revision_id: Optional revision id.  (Specifying a revision-id
1039
 
            may reduce performance for some non-native formats.)
 
873
        :param merge_parents: Additional parents specified by pending merges.
1040
874
        :return: The revision_id of the revision committed.
1041
875
        """
1042
876
        self._check_malformed()
1059
893
        if self._tree.get_revision_id() != last_rev_id:
1060
894
            raise ValueError('TreeTransform not based on branch basis: %s' %
1061
895
                             self._tree.get_revision_id())
1062
 
        revprops = commit.Commit.update_revprops(revprops, branch, authors)
1063
 
        builder = branch.get_commit_builder(parent_ids,
1064
 
                                            timestamp=timestamp,
1065
 
                                            timezone=timezone,
1066
 
                                            committer=committer,
1067
 
                                            revprops=revprops,
1068
 
                                            revision_id=revision_id)
 
896
        builder = branch.get_commit_builder(parent_ids)
1069
897
        preview = self.get_preview_tree()
1070
898
        list(builder.record_iter_changes(preview, last_rev_id,
1071
899
                                         self.iter_changes()))
1173
1001
class DiskTreeTransform(TreeTransformBase):
1174
1002
    """Tree transform storing its contents on disk."""
1175
1003
 
1176
 
    def __init__(self, tree, limbodir, pb=None,
 
1004
    def __init__(self, tree, limbodir, pb=DummyProgress(),
1177
1005
                 case_sensitive=True):
1178
1006
        """Constructor.
1179
1007
        :param tree: The tree that will be transformed, but not necessarily
1180
1008
            the output tree.
1181
1009
        :param limbodir: A directory where new files can be stored until
1182
1010
            they are installed in their proper places
1183
 
        :param pb: ignored
 
1011
        :param pb: A ProgressBar indicating how much progress is being made
1184
1012
        :param case_sensitive: If True, the target of the transform is
1185
1013
            case sensitive, not just case preserving.
1186
1014
        """
1189
1017
        self._deletiondir = None
1190
1018
        # A mapping of transform ids to their limbo filename
1191
1019
        self._limbo_files = {}
1192
 
        self._possibly_stale_limbo_files = set()
1193
1020
        # A mapping of transform ids to a set of the transform ids of children
1194
1021
        # that their limbo directory has
1195
1022
        self._limbo_children = {}
1208
1035
        if self._tree is None:
1209
1036
            return
1210
1037
        try:
1211
 
            limbo_paths = self._limbo_files.values() + list(
1212
 
                self._possibly_stale_limbo_files)
1213
 
            limbo_paths = sorted(limbo_paths, reverse=True)
1214
 
            for path in limbo_paths:
1215
 
                try:
1216
 
                    delete_any(path)
1217
 
                except OSError, e:
1218
 
                    if e.errno != errno.ENOENT:
1219
 
                        raise
1220
 
                    # XXX: warn? perhaps we just got interrupted at an
1221
 
                    # inconvenient moment, but perhaps files are disappearing
1222
 
                    # from under us?
 
1038
            entries = [(self._limbo_name(t), t, k) for t, k in
 
1039
                       self._new_contents.iteritems()]
 
1040
            entries.sort(reverse=True)
 
1041
            for path, trans_id, kind in entries:
 
1042
                delete_any(path)
1223
1043
            try:
1224
1044
                delete_any(self._limbodir)
1225
1045
            except OSError:
1257
1077
        if (trans_id in self._limbo_files and
1258
1078
            trans_id not in self._needs_rename):
1259
1079
            self._rename_in_limbo([trans_id])
1260
 
            if previous_parent != parent:
1261
 
                self._limbo_children[previous_parent].remove(trans_id)
1262
 
            if previous_parent != parent or previous_name != name:
1263
 
                del self._limbo_children_names[previous_parent][previous_name]
 
1080
            self._limbo_children[previous_parent].remove(trans_id)
 
1081
            del self._limbo_children_names[previous_parent][previous_name]
1264
1082
 
1265
1083
    def _rename_in_limbo(self, trans_ids):
1266
1084
        """Fix limbo names so that the right final path is produced.
1274
1092
        entries from _limbo_files, because they are now stale.
1275
1093
        """
1276
1094
        for trans_id in trans_ids:
1277
 
            old_path = self._limbo_files[trans_id]
1278
 
            self._possibly_stale_limbo_files.add(old_path)
1279
 
            del self._limbo_files[trans_id]
 
1095
            old_path = self._limbo_files.pop(trans_id)
1280
1096
            if trans_id not in self._new_contents:
1281
1097
                continue
1282
1098
            new_path = self._limbo_name(trans_id)
1283
1099
            os.rename(old_path, new_path)
1284
 
            self._possibly_stale_limbo_files.remove(old_path)
1285
1100
            for descendant in self._limbo_descendants(trans_id):
1286
1101
                desc_path = self._limbo_files[descendant]
1287
1102
                desc_path = new_path + desc_path[len(old_path):]
1294
1109
            descendants.update(self._limbo_descendants(descendant))
1295
1110
        return descendants
1296
1111
 
1297
 
    def create_file(self, contents, trans_id, mode_id=None, sha1=None):
 
1112
    def create_file(self, contents, trans_id, mode_id=None):
1298
1113
        """Schedule creation of a new file.
1299
1114
 
1300
 
        :seealso: new_file.
1301
 
 
1302
 
        :param contents: an iterator of strings, all of which will be written
1303
 
            to the target destination.
1304
 
        :param trans_id: TreeTransform handle
1305
 
        :param mode_id: If not None, force the mode of the target file to match
1306
 
            the mode of the object referenced by mode_id.
1307
 
            Otherwise, we will try to preserve mode bits of an existing file.
1308
 
        :param sha1: If the sha1 of this content is already known, pass it in.
1309
 
            We can use it to prevent future sha1 computations.
 
1115
        See also new_file.
 
1116
 
 
1117
        Contents is an iterator of strings, all of which will be written
 
1118
        to the target destination.
 
1119
 
 
1120
        New file takes the permissions of any existing file with that id,
 
1121
        unless mode_id is specified.
1310
1122
        """
1311
1123
        name = self._limbo_name(trans_id)
1312
1124
        f = open(name, 'wb')
1313
1125
        try:
1314
 
            unique_add(self._new_contents, trans_id, 'file')
 
1126
            try:
 
1127
                unique_add(self._new_contents, trans_id, 'file')
 
1128
            except:
 
1129
                # Clean up the file, it never got registered so
 
1130
                # TreeTransform.finalize() won't clean it up.
 
1131
                f.close()
 
1132
                os.unlink(name)
 
1133
                raise
 
1134
 
1315
1135
            f.writelines(contents)
1316
1136
        finally:
1317
1137
            f.close()
1318
1138
        self._set_mtime(name)
1319
1139
        self._set_mode(trans_id, mode_id, S_ISREG)
1320
 
        # It is unfortunate we have to use lstat instead of fstat, but we just
1321
 
        # used utime and chmod on the file, so we need the accurate final
1322
 
        # details.
1323
 
        if sha1 is not None:
1324
 
            self._observed_sha1s[trans_id] = (sha1, osutils.lstat(name))
1325
1140
 
1326
1141
    def _read_file_chunks(self, trans_id):
1327
1142
        cur_file = open(self._limbo_name(trans_id), 'rb')
1386
1201
    def cancel_creation(self, trans_id):
1387
1202
        """Cancel the creation of new file contents."""
1388
1203
        del self._new_contents[trans_id]
1389
 
        if trans_id in self._observed_sha1s:
1390
 
            del self._observed_sha1s[trans_id]
1391
1204
        children = self._limbo_children.get(trans_id)
1392
1205
        # if this is a limbo directory with children, move them before removing
1393
1206
        # the directory
1397
1210
            del self._limbo_children_names[trans_id]
1398
1211
        delete_any(self._limbo_name(trans_id))
1399
1212
 
1400
 
    def new_orphan(self, trans_id, parent_id):
1401
 
        # FIXME: There is no tree config, so we use the branch one (it's weird
1402
 
        # to define it this way as orphaning can only occur in a working tree,
1403
 
        # but that's all we have (for now). It will find the option in
1404
 
        # locations.conf or bazaar.conf though) -- vila 20100916
1405
 
        conf = self._tree.branch.get_config()
1406
 
        conf_var_name = 'bzr.transform.orphan_policy'
1407
 
        orphan_policy = conf.get_user_option(conf_var_name)
1408
 
        default_policy = orphaning_registry.default_key
1409
 
        if orphan_policy is None:
1410
 
            orphan_policy = default_policy
1411
 
        if orphan_policy not in orphaning_registry:
1412
 
            trace.warning('%s (from %s) is not a known policy, defaulting '
1413
 
                'to %s' % (orphan_policy, conf_var_name, default_policy))
1414
 
            orphan_policy = default_policy
1415
 
        handle_orphan = orphaning_registry.get(orphan_policy)
1416
 
        handle_orphan(self, trans_id, parent_id)
1417
 
 
1418
 
 
1419
 
class OrphaningError(errors.BzrError):
1420
 
 
1421
 
    # Only bugs could lead to such exception being seen by the user
1422
 
    internal_error = True
1423
 
    _fmt = "Error while orphaning %s in %s directory"
1424
 
 
1425
 
    def __init__(self, orphan, parent):
1426
 
        errors.BzrError.__init__(self)
1427
 
        self.orphan = orphan
1428
 
        self.parent = parent
1429
 
 
1430
 
 
1431
 
class OrphaningForbidden(OrphaningError):
1432
 
 
1433
 
    _fmt = "Policy: %s doesn't allow creating orphans."
1434
 
 
1435
 
    def __init__(self, policy):
1436
 
        errors.BzrError.__init__(self)
1437
 
        self.policy = policy
1438
 
 
1439
 
 
1440
 
def move_orphan(tt, orphan_id, parent_id):
1441
 
    """See TreeTransformBase.new_orphan.
1442
 
 
1443
 
    This creates a new orphan in the `bzr-orphans` dir at the root of the
1444
 
    `TreeTransform`.
1445
 
 
1446
 
    :param tt: The TreeTransform orphaning `trans_id`.
1447
 
 
1448
 
    :param orphan_id: The trans id that should be orphaned.
1449
 
 
1450
 
    :param parent_id: The orphan parent trans id.
1451
 
    """
1452
 
    # Add the orphan dir if it doesn't exist
1453
 
    orphan_dir_basename = 'bzr-orphans'
1454
 
    od_id = tt.trans_id_tree_path(orphan_dir_basename)
1455
 
    if tt.final_kind(od_id) is None:
1456
 
        tt.create_directory(od_id)
1457
 
    parent_path = tt._tree_id_paths[parent_id]
1458
 
    # Find a name that doesn't exist yet in the orphan dir
1459
 
    actual_name = tt.final_name(orphan_id)
1460
 
    new_name = tt._available_backup_name(actual_name, od_id)
1461
 
    tt.adjust_path(new_name, od_id, orphan_id)
1462
 
    trace.warning('%s has been orphaned in %s'
1463
 
                  % (joinpath(parent_path, actual_name), orphan_dir_basename))
1464
 
 
1465
 
 
1466
 
def refuse_orphan(tt, orphan_id, parent_id):
1467
 
    """See TreeTransformBase.new_orphan.
1468
 
 
1469
 
    This refuses to create orphan, letting the caller handle the conflict.
1470
 
    """
1471
 
    raise OrphaningForbidden('never')
1472
 
 
1473
 
 
1474
 
orphaning_registry = registry.Registry()
1475
 
orphaning_registry.register(
1476
 
    'conflict', refuse_orphan,
1477
 
    'Leave orphans in place and create a conflict on the directory.')
1478
 
orphaning_registry.register(
1479
 
    'move', move_orphan,
1480
 
    'Move orphans into the bzr-orphans directory.')
1481
 
orphaning_registry._set_default_key('conflict')
1482
 
 
1483
1213
 
1484
1214
class TreeTransform(DiskTreeTransform):
1485
1215
    """Represent a tree transformation.
1546
1276
    FileMover does not delete files until it is sure that a rollback will not
1547
1277
    happen.
1548
1278
    """
1549
 
    def __init__(self, tree, pb=None):
 
1279
    def __init__(self, tree, pb=DummyProgress()):
1550
1280
        """Note: a tree_write lock is taken on the tree.
1551
1281
 
1552
1282
        Use TreeTransform.finalize() to release the lock (can be omitted if
1603
1333
    def tree_kind(self, trans_id):
1604
1334
        """Determine the file kind in the working tree.
1605
1335
 
1606
 
        :returns: The file kind or None if the file does not exist
 
1336
        Raises NoSuchFile if the file does not exist
1607
1337
        """
1608
1338
        path = self._tree_id_paths.get(trans_id)
1609
1339
        if path is None:
1610
 
            return None
 
1340
            raise NoSuchFile(None)
1611
1341
        try:
1612
1342
            return file_kind(self._tree.abspath(path))
1613
 
        except errors.NoSuchFile:
1614
 
            return None
 
1343
        except OSError, e:
 
1344
            if e.errno != errno.ENOENT:
 
1345
                raise
 
1346
            else:
 
1347
                raise NoSuchFile(path)
1615
1348
 
1616
1349
    def _set_mode(self, trans_id, mode_id, typefunc):
1617
1350
        """Set the mode of new file contents.
1723
1456
        """
1724
1457
        if not no_conflicts:
1725
1458
            self._check_malformed()
1726
 
        child_pb = ui.ui_factory.nested_progress_bar()
 
1459
        child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1727
1460
        try:
1728
1461
            if precomputed_delta is None:
1729
1462
                child_pb.update('Apply phase', 0, 2)
1748
1481
                mover.apply_deletions()
1749
1482
        finally:
1750
1483
            child_pb.finished()
1751
 
        if self.final_file_id(self.root) is None:
1752
 
            inventory_delta = [e for e in inventory_delta if e[0] != '']
1753
1484
        self._tree.apply_inventory_delta(inventory_delta)
1754
 
        self._apply_observed_sha1s()
1755
1485
        self._done = True
1756
1486
        self.finalize()
1757
1487
        return _TransformResults(modified_paths, self.rename_count)
1759
1489
    def _generate_inventory_delta(self):
1760
1490
        """Generate an inventory delta for the current transform."""
1761
1491
        inventory_delta = []
1762
 
        child_pb = ui.ui_factory.nested_progress_bar()
 
1492
        child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1763
1493
        new_paths = self._inventory_altered()
1764
1494
        total_entries = len(new_paths) + len(self._removed_id)
1765
1495
        try:
1789
1519
                if file_id is None:
1790
1520
                    continue
1791
1521
                needs_entry = False
1792
 
                kind = self.final_kind(trans_id)
1793
 
                if kind is None:
 
1522
                try:
 
1523
                    kind = self.final_kind(trans_id)
 
1524
                except NoSuchFile:
1794
1525
                    kind = self._tree.stored_kind(file_id)
1795
1526
                parent_trans_id = self.final_parent(trans_id)
1796
1527
                parent_file_id = new_path_file_ids.get(parent_trans_id)
1827
1558
        """
1828
1559
        tree_paths = list(self._tree_path_ids.iteritems())
1829
1560
        tree_paths.sort(reverse=True)
1830
 
        child_pb = ui.ui_factory.nested_progress_bar()
 
1561
        child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1831
1562
        try:
1832
 
            for num, (path, trans_id) in enumerate(tree_paths):
1833
 
                # do not attempt to move root into a subdirectory of itself.
1834
 
                if path == '':
1835
 
                    continue
 
1563
            for num, data in enumerate(tree_paths):
 
1564
                path, trans_id = data
1836
1565
                child_pb.update('removing file', num, len(tree_paths))
1837
1566
                full_path = self._tree.abspath(path)
1838
1567
                if trans_id in self._removed_contents:
1839
 
                    delete_path = os.path.join(self._deletiondir, trans_id)
1840
 
                    mover.pre_delete(full_path, delete_path)
1841
 
                elif (trans_id in self._new_name
1842
 
                      or trans_id in self._new_parent):
 
1568
                    mover.pre_delete(full_path, os.path.join(self._deletiondir,
 
1569
                                     trans_id))
 
1570
                elif trans_id in self._new_name or trans_id in \
 
1571
                    self._new_parent:
1843
1572
                    try:
1844
1573
                        mover.rename(full_path, self._limbo_name(trans_id))
1845
 
                    except errors.TransformRenameFailed, e:
 
1574
                    except OSError, e:
1846
1575
                        if e.errno != errno.ENOENT:
1847
1576
                            raise
1848
1577
                    else:
1864
1593
        modified_paths = []
1865
1594
        new_path_file_ids = dict((t, self.final_file_id(t)) for p, t in
1866
1595
                                 new_paths)
1867
 
        child_pb = ui.ui_factory.nested_progress_bar()
 
1596
        child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1868
1597
        try:
1869
1598
            for num, (path, trans_id) in enumerate(new_paths):
1870
1599
                if (num % 10) == 0:
1873
1602
                if trans_id in self._needs_rename:
1874
1603
                    try:
1875
1604
                        mover.rename(self._limbo_name(trans_id), full_path)
1876
 
                    except errors.TransformRenameFailed, e:
 
1605
                    except OSError, e:
1877
1606
                        # We may be renaming a dangling inventory id
1878
1607
                        if e.errno != errno.ENOENT:
1879
1608
                            raise
1880
1609
                    else:
1881
1610
                        self.rename_count += 1
1882
 
                    # TODO: if trans_id in self._observed_sha1s, we should
1883
 
                    #       re-stat the final target, since ctime will be
1884
 
                    #       updated by the change.
1885
1611
                if (trans_id in self._new_contents or
1886
1612
                    self.path_changed(trans_id)):
1887
1613
                    if trans_id in self._new_contents:
1888
1614
                        modified_paths.append(full_path)
1889
1615
                if trans_id in self._new_executability:
1890
1616
                    self._set_executability(path, trans_id)
1891
 
                if trans_id in self._observed_sha1s:
1892
 
                    o_sha1, o_st_val = self._observed_sha1s[trans_id]
1893
 
                    st = osutils.lstat(full_path)
1894
 
                    self._observed_sha1s[trans_id] = (o_sha1, st)
1895
1617
        finally:
1896
1618
            child_pb.finished()
1897
 
        for path, trans_id in new_paths:
1898
 
            # new_paths includes stuff like workingtree conflicts. Only the
1899
 
            # stuff in new_contents actually comes from limbo.
1900
 
            if trans_id in self._limbo_files:
1901
 
                del self._limbo_files[trans_id]
1902
1619
        self._new_contents.clear()
1903
1620
        return modified_paths
1904
1621
 
1905
 
    def _apply_observed_sha1s(self):
1906
 
        """After we have finished renaming everything, update observed sha1s
1907
 
 
1908
 
        This has to be done after self._tree.apply_inventory_delta, otherwise
1909
 
        it doesn't know anything about the files we are updating. Also, we want
1910
 
        to do this as late as possible, so that most entries end up cached.
1911
 
        """
1912
 
        # TODO: this doesn't update the stat information for directories. So
1913
 
        #       the first 'bzr status' will still need to rewrite
1914
 
        #       .bzr/checkout/dirstate. However, we at least don't need to
1915
 
        #       re-read all of the files.
1916
 
        # TODO: If the operation took a while, we could do a time.sleep(3) here
1917
 
        #       to allow the clock to tick over and ensure we won't have any
1918
 
        #       problems. (we could observe start time, and finish time, and if
1919
 
        #       it is less than eg 10% overhead, add a sleep call.)
1920
 
        paths = FinalPaths(self)
1921
 
        for trans_id, observed in self._observed_sha1s.iteritems():
1922
 
            path = paths.get_path(trans_id)
1923
 
            # We could get the file_id, but dirstate prefers to use the path
1924
 
            # anyway, and it is 'cheaper' to determine.
1925
 
            # file_id = self._new_id[trans_id]
1926
 
            self._tree._observed_sha1(None, path, observed)
1927
 
 
1928
1622
 
1929
1623
class TransformPreview(DiskTreeTransform):
1930
1624
    """A TreeTransform for generating preview trees.
1934
1628
    unversioned files in the input tree.
1935
1629
    """
1936
1630
 
1937
 
    def __init__(self, tree, pb=None, case_sensitive=True):
 
1631
    def __init__(self, tree, pb=DummyProgress(), case_sensitive=True):
1938
1632
        tree.lock_read()
1939
1633
        limbodir = osutils.mkdtemp(prefix='bzr-limbo-')
1940
1634
        DiskTreeTransform.__init__(self, tree, limbodir, pb, case_sensitive)
1945
1639
    def tree_kind(self, trans_id):
1946
1640
        path = self._tree_id_paths.get(trans_id)
1947
1641
        if path is None:
1948
 
            return None
1949
 
        kind = self._tree.path_content_summary(path)[0]
1950
 
        if kind == 'missing':
1951
 
            kind = None
1952
 
        return kind
 
1642
            raise NoSuchFile(None)
 
1643
        file_id = self._tree.path2id(path)
 
1644
        return self._tree.kind(file_id)
1953
1645
 
1954
1646
    def _set_mode(self, trans_id, mode_id, typefunc):
1955
1647
        """Set the mode of new file contents.
1975
1667
            childpath = joinpath(path, child)
1976
1668
            yield self.trans_id_tree_path(childpath)
1977
1669
 
1978
 
    def new_orphan(self, trans_id, parent_id):
1979
 
        raise NotImplementedError(self.new_orphan)
1980
 
 
1981
 
 
1982
 
class _PreviewTree(tree.InventoryTree):
 
1670
 
 
1671
class _PreviewTree(tree.Tree):
1983
1672
    """Partial implementation of Tree to support show_diff_trees"""
1984
1673
 
1985
1674
    def __init__(self, transform):
2014
1703
                yield self._get_repository().revision_tree(revision_id)
2015
1704
 
2016
1705
    def _get_file_revision(self, file_id, vf, tree_revision):
2017
 
        parent_keys = [(file_id, t.get_file_revision(file_id)) for t in
 
1706
        parent_keys = [(file_id, self._file_revision(t, file_id)) for t in
2018
1707
                       self._iter_parent_trees()]
2019
1708
        vf.add_lines((file_id, tree_revision), parent_keys,
2020
 
                     self.get_file_lines(file_id))
 
1709
                     self.get_file(file_id).readlines())
2021
1710
        repo = self._get_repository()
2022
1711
        base_vf = repo.texts
2023
1712
        if base_vf not in vf.fallback_versionedfiles:
2024
1713
            vf.fallback_versionedfiles.append(base_vf)
2025
1714
        return tree_revision
2026
1715
 
2027
 
    def _stat_limbo_file(self, file_id=None, trans_id=None):
2028
 
        if trans_id is None:
2029
 
            trans_id = self._transform.trans_id_file_id(file_id)
 
1716
    def _stat_limbo_file(self, file_id):
 
1717
        trans_id = self._transform.trans_id_file_id(file_id)
2030
1718
        name = self._transform._limbo_name(trans_id)
2031
1719
        return os.lstat(name)
2032
1720
 
2046
1734
            executable = self.is_executable(file_id, path)
2047
1735
        return kind, executable, None
2048
1736
 
2049
 
    def is_locked(self):
2050
 
        return False
2051
 
 
2052
1737
    def lock_read(self):
2053
1738
        # Perhaps in theory, this should lock the TreeTransform?
2054
 
        return self
 
1739
        pass
2055
1740
 
2056
1741
    def unlock(self):
2057
1742
        pass
2155
1840
            if (specific_file_ids is not None
2156
1841
                and file_id not in specific_file_ids):
2157
1842
                continue
2158
 
            kind = self._transform.final_kind(trans_id)
2159
 
            if kind is None:
 
1843
            try:
 
1844
                kind = self._transform.final_kind(trans_id)
 
1845
            except NoSuchFile:
2160
1846
                kind = self._transform._tree.stored_kind(file_id)
2161
1847
            new_entry = inventory.make_entry(
2162
1848
                kind,
2247
1933
 
2248
1934
    def get_file_size(self, file_id):
2249
1935
        """See Tree.get_file_size"""
2250
 
        trans_id = self._transform.trans_id_file_id(file_id)
2251
 
        kind = self._transform.final_kind(trans_id)
2252
 
        if kind != 'file':
2253
 
            return None
2254
 
        if trans_id in self._transform._new_contents:
2255
 
            return self._stat_limbo_file(trans_id=trans_id).st_size
2256
1936
        if self.kind(file_id) == 'file':
2257
1937
            return self._transform._tree.get_file_size(file_id)
2258
1938
        else:
2259
1939
            return None
2260
1940
 
2261
 
    def get_file_verifier(self, file_id, path=None, stat_value=None):
2262
 
        trans_id = self._transform.trans_id_file_id(file_id)
2263
 
        kind = self._transform._new_contents.get(trans_id)
2264
 
        if kind is None:
2265
 
            return self._transform._tree.get_file_verifier(file_id)
2266
 
        if kind == 'file':
2267
 
            fileobj = self.get_file(file_id)
2268
 
            try:
2269
 
                return ("SHA1", sha_file(fileobj))
2270
 
            finally:
2271
 
                fileobj.close()
2272
 
 
2273
1941
    def get_file_sha1(self, file_id, path=None, stat_value=None):
2274
1942
        trans_id = self._transform.trans_id_file_id(file_id)
2275
1943
        kind = self._transform._new_contents.get(trans_id)
2298
1966
            except errors.NoSuchId:
2299
1967
                return False
2300
1968
 
2301
 
    def has_filename(self, path):
2302
 
        trans_id = self._path2trans_id(path)
2303
 
        if trans_id in self._transform._new_contents:
2304
 
            return True
2305
 
        elif trans_id in self._transform._removed_contents:
2306
 
            return False
2307
 
        else:
2308
 
            return self._transform._tree.has_filename(path)
2309
 
 
2310
1969
    def path_content_summary(self, path):
2311
1970
        trans_id = self._path2trans_id(path)
2312
1971
        tt = self._transform
2400
2059
                                   self.get_file(file_id).readlines(),
2401
2060
                                   default_revision)
2402
2061
 
2403
 
    def get_symlink_target(self, file_id, path=None):
 
2062
    def get_symlink_target(self, file_id):
2404
2063
        """See Tree.get_symlink_target"""
2405
2064
        if not self._content_change(file_id):
2406
2065
            return self._transform._tree.get_symlink_target(file_id)
2421
2080
                path_from_root = self._final_paths.get_path(child_id)
2422
2081
                basename = self._transform.final_name(child_id)
2423
2082
                file_id = self._transform.final_file_id(child_id)
2424
 
                kind  = self._transform.final_kind(child_id)
2425
 
                if kind is not None:
 
2083
                try:
 
2084
                    kind = self._transform.final_kind(child_id)
2426
2085
                    versioned_kind = kind
2427
 
                else:
 
2086
                except NoSuchFile:
2428
2087
                    kind = 'unknown'
2429
2088
                    versioned_kind = self._transform._tree.stored_kind(file_id)
2430
2089
                if versioned_kind == 'directory':
2543
2202
    for num, _unused in enumerate(wt.all_file_ids()):
2544
2203
        if num > 0:  # more than just a root
2545
2204
            raise errors.WorkingTreeAlreadyPopulated(base=wt.basedir)
 
2205
    existing_files = set()
 
2206
    for dir, files in wt.walkdirs():
 
2207
        existing_files.update(f[0] for f in files)
2546
2208
    file_trans_id = {}
2547
 
    top_pb = ui.ui_factory.nested_progress_bar()
 
2209
    top_pb = bzrlib.ui.ui_factory.nested_progress_bar()
2548
2210
    pp = ProgressPhase("Build phase", 2, top_pb)
2549
2211
    if tree.inventory.root is not None:
2550
2212
        # This is kind of a hack: we should be altering the root
2563
2225
        pp.next_phase()
2564
2226
        file_trans_id[wt.get_root_id()] = \
2565
2227
            tt.trans_id_tree_file_id(wt.get_root_id())
2566
 
        pb = ui.ui_factory.nested_progress_bar()
 
2228
        pb = bzrlib.ui.ui_factory.nested_progress_bar()
2567
2229
        try:
2568
2230
            deferred_contents = []
2569
2231
            num = 0
2572
2234
                precomputed_delta = []
2573
2235
            else:
2574
2236
                precomputed_delta = None
2575
 
            # Check if tree inventory has content. If so, we populate
2576
 
            # existing_files with the directory content. If there are no
2577
 
            # entries we skip populating existing_files as its not used.
2578
 
            # This improves performance and unncessary work on large
2579
 
            # directory trees. (#501307)
2580
 
            if total > 0:
2581
 
                existing_files = set()
2582
 
                for dir, files in wt.walkdirs():
2583
 
                    existing_files.update(f[0] for f in files)
2584
2237
            for num, (tree_path, entry) in \
2585
2238
                enumerate(tree.inventory.iter_entries_by_dir()):
2586
2239
                pb.update("Building tree", num - len(deferred_contents), total)
2616
2269
                    executable = tree.is_executable(file_id, tree_path)
2617
2270
                    if executable:
2618
2271
                        tt.set_executability(executable, trans_id)
2619
 
                    trans_data = (trans_id, tree_path, entry.text_sha1)
 
2272
                    trans_data = (trans_id, tree_path)
2620
2273
                    deferred_contents.append((file_id, trans_data))
2621
2274
                else:
2622
2275
                    file_trans_id[file_id] = new_by_entry(tt, entry, parent_id,
2638
2291
            precomputed_delta = None
2639
2292
        conflicts = cook_conflicts(raw_conflicts, tt)
2640
2293
        for conflict in conflicts:
2641
 
            trace.warning(unicode(conflict))
 
2294
            warning(conflict)
2642
2295
        try:
2643
2296
            wt.add_conflicts(conflicts)
2644
2297
        except errors.UnsupportedOperation:
2667
2320
        unchanged = dict(unchanged)
2668
2321
        new_desired_files = []
2669
2322
        count = 0
2670
 
        for file_id, (trans_id, tree_path, text_sha1) in desired_files:
 
2323
        for file_id, (trans_id, tree_path) in desired_files:
2671
2324
            accelerator_path = unchanged.get(file_id)
2672
2325
            if accelerator_path is None:
2673
 
                new_desired_files.append((file_id,
2674
 
                    (trans_id, tree_path, text_sha1)))
 
2326
                new_desired_files.append((file_id, (trans_id, tree_path)))
2675
2327
                continue
2676
2328
            pb.update('Adding file contents', count + offset, total)
2677
2329
            if hardlink:
2684
2336
                    contents = filtered_output_bytes(contents, filters,
2685
2337
                        ContentFilterContext(tree_path, tree))
2686
2338
                try:
2687
 
                    tt.create_file(contents, trans_id, sha1=text_sha1)
 
2339
                    tt.create_file(contents, trans_id)
2688
2340
                finally:
2689
2341
                    try:
2690
2342
                        contents.close()
2693
2345
                        pass
2694
2346
            count += 1
2695
2347
        offset += count
2696
 
    for count, ((trans_id, tree_path, text_sha1), contents) in enumerate(
 
2348
    for count, ((trans_id, tree_path), contents) in enumerate(
2697
2349
            tree.iter_files_bytes(new_desired_files)):
2698
2350
        if wt.supports_content_filtering():
2699
2351
            filters = wt._content_filter_stack(tree_path)
2700
2352
            contents = filtered_output_bytes(contents, filters,
2701
2353
                ContentFilterContext(tree_path, tree))
2702
 
        tt.create_file(contents, trans_id, sha1=text_sha1)
 
2354
        tt.create_file(contents, trans_id)
2703
2355
        pb.update('Adding file contents', count + offset, total)
2704
2356
 
2705
2357
 
2707
2359
    for child in tt.iter_tree_children(old_parent):
2708
2360
        tt.adjust_path(tt.final_name(child), new_parent, child)
2709
2361
 
2710
 
 
2711
2362
def _reparent_transform_children(tt, old_parent, new_parent):
2712
2363
    by_parent = tt.by_parent()
2713
2364
    for child in by_parent[old_parent]:
2714
2365
        tt.adjust_path(tt.final_name(child), new_parent, child)
2715
2366
    return by_parent[old_parent]
2716
2367
 
2717
 
 
2718
2368
def _content_match(tree, entry, file_id, kind, target_path):
2719
2369
    if entry.kind != kind:
2720
2370
        return False
2721
2371
    if entry.kind == "directory":
2722
2372
        return True
2723
2373
    if entry.kind == "file":
2724
 
        f = file(target_path, 'rb')
2725
 
        try:
2726
 
            if tree.get_file_text(file_id) == f.read():
2727
 
                return True
2728
 
        finally:
2729
 
            f.close()
 
2374
        if tree.get_file(file_id).read() == file(target_path, 'rb').read():
 
2375
            return True
2730
2376
    elif entry.kind == "symlink":
2731
2377
        if tree.get_symlink_target(file_id) == os.readlink(target_path):
2732
2378
            return True
2784
2430
        raise errors.BadFileKindError(name, kind)
2785
2431
 
2786
2432
 
 
2433
@deprecated_function(deprecated_in((1, 9, 0)))
 
2434
def create_by_entry(tt, entry, tree, trans_id, lines=None, mode_id=None):
 
2435
    """Create new file contents according to an inventory entry.
 
2436
 
 
2437
    DEPRECATED.  Use create_from_tree instead.
 
2438
    """
 
2439
    if entry.kind == "file":
 
2440
        if lines is None:
 
2441
            lines = tree.get_file(entry.file_id).readlines()
 
2442
        tt.create_file(lines, trans_id, mode_id=mode_id)
 
2443
    elif entry.kind == "symlink":
 
2444
        tt.create_symlink(tree.get_symlink_target(entry.file_id), trans_id)
 
2445
    elif entry.kind == "directory":
 
2446
        tt.create_directory(trans_id)
 
2447
 
 
2448
 
2787
2449
def create_from_tree(tt, trans_id, tree, file_id, bytes=None,
2788
2450
    filter_tree_path=None):
2789
2451
    """Create new file contents according to tree contents.
2820
2482
        tt.set_executability(entry.executable, trans_id)
2821
2483
 
2822
2484
 
2823
 
@deprecated_function(deprecated_in((2, 3, 0)))
2824
2485
def get_backup_name(entry, by_parent, parent_trans_id, tt):
2825
2486
    return _get_backup_name(entry.name, by_parent, parent_trans_id, tt)
2826
2487
 
2827
2488
 
2828
 
@deprecated_function(deprecated_in((2, 3, 0)))
2829
2489
def _get_backup_name(name, by_parent, parent_trans_id, tt):
2830
2490
    """Produce a backup-style name that appears to be available"""
2831
2491
    def name_gen():
2866
2526
 
2867
2527
 
2868
2528
def revert(working_tree, target_tree, filenames, backups=False,
2869
 
           pb=None, change_reporter=None):
 
2529
           pb=DummyProgress(), change_reporter=None):
2870
2530
    """Revert a working tree's contents to those of a target tree."""
2871
2531
    target_tree.lock_read()
2872
 
    pb = ui.ui_factory.nested_progress_bar()
2873
2532
    tt = TreeTransform(working_tree, pb)
2874
2533
    try:
2875
2534
        pp = ProgressPhase("Revert phase", 3, pb)
2880
2539
                unversioned_filter=working_tree.is_ignored)
2881
2540
            delta.report_changes(tt.iter_changes(), change_reporter)
2882
2541
        for conflict in conflicts:
2883
 
            trace.warning(unicode(conflict))
 
2542
            warning(conflict)
2884
2543
        pp.next_phase()
2885
2544
        tt.apply()
2886
2545
        working_tree.set_merge_modified(merge_modified)
2894
2553
def _prepare_revert_transform(working_tree, target_tree, tt, filenames,
2895
2554
                              backups, pp, basis_tree=None,
2896
2555
                              merge_modified=None):
2897
 
    child_pb = ui.ui_factory.nested_progress_bar()
 
2556
    pp.next_phase()
 
2557
    child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
2898
2558
    try:
2899
2559
        if merge_modified is None:
2900
2560
            merge_modified = working_tree.merge_modified()
2903
2563
                                      merge_modified, basis_tree)
2904
2564
    finally:
2905
2565
        child_pb.finished()
2906
 
    child_pb = ui.ui_factory.nested_progress_bar()
 
2566
    pp.next_phase()
 
2567
    child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
2907
2568
    try:
2908
2569
        raw_conflicts = resolve_conflicts(tt, child_pb,
2909
2570
            lambda t, c: conflict_pass(t, c, target_tree))
2917
2578
                 backups, merge_modified, basis_tree=None):
2918
2579
    if basis_tree is not None:
2919
2580
        basis_tree.lock_read()
2920
 
    # We ask the working_tree for its changes relative to the target, rather
2921
 
    # than the target changes relative to the working tree. Because WT4 has an
2922
 
    # optimizer to compare itself to a target, but no optimizer for the
2923
 
    # reverse.
2924
 
    change_list = working_tree.iter_changes(target_tree,
 
2581
    change_list = target_tree.iter_changes(working_tree,
2925
2582
        specific_files=specific_files, pb=pb)
2926
2583
    if target_tree.get_root_id() is None:
2927
2584
        skip_root = True
2931
2588
        deferred_files = []
2932
2589
        for id_num, (file_id, path, changed_content, versioned, parent, name,
2933
2590
                kind, executable) in enumerate(change_list):
2934
 
            target_path, wt_path = path
2935
 
            target_versioned, wt_versioned = versioned
2936
 
            target_parent, wt_parent = parent
2937
 
            target_name, wt_name = name
2938
 
            target_kind, wt_kind = kind
2939
 
            target_executable, wt_executable = executable
2940
 
            if skip_root and wt_parent is None:
 
2591
            if skip_root and file_id[0] is not None and parent[0] is None:
2941
2592
                continue
2942
2593
            trans_id = tt.trans_id_file_id(file_id)
2943
2594
            mode_id = None
2944
2595
            if changed_content:
2945
2596
                keep_content = False
2946
 
                if wt_kind == 'file' and (backups or target_kind is None):
 
2597
                if kind[0] == 'file' and (backups or kind[1] is None):
2947
2598
                    wt_sha1 = working_tree.get_file_sha1(file_id)
2948
2599
                    if merge_modified.get(file_id) != wt_sha1:
2949
2600
                        # acquire the basis tree lazily to prevent the
2952
2603
                        if basis_tree is None:
2953
2604
                            basis_tree = working_tree.basis_tree()
2954
2605
                            basis_tree.lock_read()
2955
 
                        if basis_tree.has_id(file_id):
 
2606
                        if file_id in basis_tree:
2956
2607
                            if wt_sha1 != basis_tree.get_file_sha1(file_id):
2957
2608
                                keep_content = True
2958
 
                        elif target_kind is None and not target_versioned:
 
2609
                        elif kind[1] is None and not versioned[1]:
2959
2610
                            keep_content = True
2960
 
                if wt_kind is not None:
 
2611
                if kind[0] is not None:
2961
2612
                    if not keep_content:
2962
2613
                        tt.delete_contents(trans_id)
2963
 
                    elif target_kind is not None:
2964
 
                        parent_trans_id = tt.trans_id_file_id(wt_parent)
2965
 
                        backup_name = tt._available_backup_name(
2966
 
                            wt_name, parent_trans_id)
 
2614
                    elif kind[1] is not None:
 
2615
                        parent_trans_id = tt.trans_id_file_id(parent[0])
 
2616
                        by_parent = tt.by_parent()
 
2617
                        backup_name = _get_backup_name(name[0], by_parent,
 
2618
                                                       parent_trans_id, tt)
2967
2619
                        tt.adjust_path(backup_name, parent_trans_id, trans_id)
2968
 
                        new_trans_id = tt.create_path(wt_name, parent_trans_id)
2969
 
                        if wt_versioned and target_versioned:
 
2620
                        new_trans_id = tt.create_path(name[0], parent_trans_id)
 
2621
                        if versioned == (True, True):
2970
2622
                            tt.unversion_file(trans_id)
2971
2623
                            tt.version_file(file_id, new_trans_id)
2972
2624
                        # New contents should have the same unix perms as old
2973
2625
                        # contents
2974
2626
                        mode_id = trans_id
2975
2627
                        trans_id = new_trans_id
2976
 
                if target_kind in ('directory', 'tree-reference'):
 
2628
                if kind[1] in ('directory', 'tree-reference'):
2977
2629
                    tt.create_directory(trans_id)
2978
 
                    if target_kind == 'tree-reference':
 
2630
                    if kind[1] == 'tree-reference':
2979
2631
                        revision = target_tree.get_reference_revision(file_id,
2980
 
                                                                      target_path)
 
2632
                                                                      path[1])
2981
2633
                        tt.set_tree_reference(revision, trans_id)
2982
 
                elif target_kind == 'symlink':
 
2634
                elif kind[1] == 'symlink':
2983
2635
                    tt.create_symlink(target_tree.get_symlink_target(file_id),
2984
2636
                                      trans_id)
2985
 
                elif target_kind == 'file':
 
2637
                elif kind[1] == 'file':
2986
2638
                    deferred_files.append((file_id, (trans_id, mode_id)))
2987
2639
                    if basis_tree is None:
2988
2640
                        basis_tree = working_tree.basis_tree()
2989
2641
                        basis_tree.lock_read()
2990
2642
                    new_sha1 = target_tree.get_file_sha1(file_id)
2991
 
                    if (basis_tree.has_id(file_id) and
2992
 
                        new_sha1 == basis_tree.get_file_sha1(file_id)):
 
2643
                    if (file_id in basis_tree and new_sha1 ==
 
2644
                        basis_tree.get_file_sha1(file_id)):
2993
2645
                        if file_id in merge_modified:
2994
2646
                            del merge_modified[file_id]
2995
2647
                    else:
2996
2648
                        merge_modified[file_id] = new_sha1
2997
2649
 
2998
2650
                    # preserve the execute bit when backing up
2999
 
                    if keep_content and wt_executable == target_executable:
3000
 
                        tt.set_executability(target_executable, trans_id)
3001
 
                elif target_kind is not None:
3002
 
                    raise AssertionError(target_kind)
3003
 
            if not wt_versioned and target_versioned:
 
2651
                    if keep_content and executable[0] == executable[1]:
 
2652
                        tt.set_executability(executable[1], trans_id)
 
2653
                elif kind[1] is not None:
 
2654
                    raise AssertionError(kind[1])
 
2655
            if versioned == (False, True):
3004
2656
                tt.version_file(file_id, trans_id)
3005
 
            if wt_versioned and not target_versioned:
 
2657
            if versioned == (True, False):
3006
2658
                tt.unversion_file(trans_id)
3007
 
            if (target_name is not None and
3008
 
                (wt_name != target_name or wt_parent != target_parent)):
3009
 
                if target_name == '' and target_parent is None:
 
2659
            if (name[1] is not None and
 
2660
                (name[0] != name[1] or parent[0] != parent[1])):
 
2661
                if name[1] == '' and parent[1] is None:
3010
2662
                    parent_trans = ROOT_PARENT
3011
2663
                else:
3012
 
                    parent_trans = tt.trans_id_file_id(target_parent)
3013
 
                if wt_parent is None and wt_versioned:
3014
 
                    tt.adjust_root_path(target_name, parent_trans)
3015
 
                else:
3016
 
                    tt.adjust_path(target_name, parent_trans, trans_id)
3017
 
            if wt_executable != target_executable and target_kind == "file":
3018
 
                tt.set_executability(target_executable, trans_id)
 
2664
                    parent_trans = tt.trans_id_file_id(parent[1])
 
2665
                tt.adjust_path(name[1], parent_trans, trans_id)
 
2666
            if executable[0] != executable[1] and kind[1] == "file":
 
2667
                tt.set_executability(executable[1], trans_id)
3019
2668
        if working_tree.supports_content_filtering():
3020
2669
            for index, ((trans_id, mode_id), bytes) in enumerate(
3021
2670
                target_tree.iter_files_bytes(deferred_files)):
3032
2681
            for (trans_id, mode_id), bytes in target_tree.iter_files_bytes(
3033
2682
                deferred_files):
3034
2683
                tt.create_file(bytes, trans_id, mode_id)
3035
 
        tt.fixup_new_roots()
3036
2684
    finally:
3037
2685
        if basis_tree is not None:
3038
2686
            basis_tree.unlock()
3039
2687
    return merge_modified
3040
2688
 
3041
2689
 
3042
 
def resolve_conflicts(tt, pb=None, pass_func=None):
 
2690
def resolve_conflicts(tt, pb=DummyProgress(), pass_func=None):
3043
2691
    """Make many conflict-resolution attempts, but die if they fail"""
3044
2692
    if pass_func is None:
3045
2693
        pass_func = conflict_pass
3046
2694
    new_conflicts = set()
3047
 
    pb = ui.ui_factory.nested_progress_bar()
3048
2695
    try:
3049
2696
        for n in range(10):
3050
2697
            pb.update('Resolution pass', n+1, 10)
3054
2701
            new_conflicts.update(pass_func(tt, conflicts))
3055
2702
        raise MalformedTransform(conflicts=conflicts)
3056
2703
    finally:
3057
 
        pb.finished()
 
2704
        pb.clear()
3058
2705
 
3059
2706
 
3060
2707
def conflict_pass(tt, conflicts, path_tree=None):
3092
2739
 
3093
2740
        elif c_type == 'missing parent':
3094
2741
            trans_id = conflict[1]
3095
 
            if trans_id in tt._removed_contents:
3096
 
                cancel_deletion = True
3097
 
                orphans = tt._get_potential_orphans(trans_id)
3098
 
                if orphans:
3099
 
                    cancel_deletion = False
3100
 
                    # All children are orphans
3101
 
                    for o in orphans:
3102
 
                        try:
3103
 
                            tt.new_orphan(o, trans_id)
3104
 
                        except OrphaningError:
3105
 
                            # Something bad happened so we cancel the directory
3106
 
                            # deletion which will leave it in place with a
3107
 
                            # conflict. The user can deal with it from there.
3108
 
                            # Note that this also catch the case where we don't
3109
 
                            # want to create orphans and leave the directory in
3110
 
                            # place.
3111
 
                            cancel_deletion = True
3112
 
                            break
3113
 
                if cancel_deletion:
3114
 
                    # Cancel the directory deletion
3115
 
                    tt.cancel_deletion(trans_id)
3116
 
                    new_conflicts.add(('deleting parent', 'Not deleting',
3117
 
                                       trans_id))
3118
 
            else:
 
2742
            try:
 
2743
                tt.cancel_deletion(trans_id)
 
2744
                new_conflicts.add(('deleting parent', 'Not deleting',
 
2745
                                   trans_id))
 
2746
            except KeyError:
3119
2747
                create = True
3120
2748
                try:
3121
2749
                    tt.final_name(trans_id)
3124
2752
                        file_id = tt.final_file_id(trans_id)
3125
2753
                        if file_id is None:
3126
2754
                            file_id = tt.inactive_file_id(trans_id)
3127
 
                        _, entry = path_tree.iter_entries_by_dir(
3128
 
                            [file_id]).next()
 
2755
                        entry = path_tree.inventory[file_id]
3129
2756
                        # special-case the other tree root (move its
3130
2757
                        # children to current root)
3131
2758
                        if entry.parent_id is None:
3132
 
                            create = False
 
2759
                            create=False
3133
2760
                            moved = _reparent_transform_children(
3134
2761
                                tt, trans_id, tt.root)
3135
2762
                            for child in moved:
3146
2773
        elif c_type == 'unversioned parent':
3147
2774
            file_id = tt.inactive_file_id(conflict[1])
3148
2775
            # special-case the other tree root (move its children instead)
3149
 
            if path_tree and path_tree.has_id(file_id):
3150
 
                if path_tree.path2id('') == file_id:
3151
 
                    # This is the root entry, skip it
 
2776
            if path_tree and file_id in path_tree:
 
2777
                if path_tree.inventory[file_id].parent_id is None:
3152
2778
                    continue
3153
2779
            tt.version_file(file_id, conflict[1])
3154
2780
            new_conflicts.add((c_type, 'Versioned directory', conflict[1]))
3170
2796
 
3171
2797
def cook_conflicts(raw_conflicts, tt):
3172
2798
    """Generate a list of cooked conflicts, sorted by file path"""
 
2799
    from bzrlib.conflicts import Conflict
3173
2800
    conflict_iter = iter_cook_conflicts(raw_conflicts, tt)
3174
 
    return sorted(conflict_iter, key=conflicts.Conflict.sort_key)
 
2801
    return sorted(conflict_iter, key=Conflict.sort_key)
3175
2802
 
3176
2803
 
3177
2804
def iter_cook_conflicts(raw_conflicts, tt):
 
2805
    from bzrlib.conflicts import Conflict
3178
2806
    fp = FinalPaths(tt)
3179
2807
    for conflict in raw_conflicts:
3180
2808
        c_type = conflict[0]
3182
2810
        modified_path = fp.get_path(conflict[2])
3183
2811
        modified_id = tt.final_file_id(conflict[2])
3184
2812
        if len(conflict) == 3:
3185
 
            yield conflicts.Conflict.factory(
3186
 
                c_type, action=action, path=modified_path, file_id=modified_id)
 
2813
            yield Conflict.factory(c_type, action=action, path=modified_path,
 
2814
                                     file_id=modified_id)
3187
2815
 
3188
2816
        else:
3189
2817
            conflicting_path = fp.get_path(conflict[3])
3190
2818
            conflicting_id = tt.final_file_id(conflict[3])
3191
 
            yield conflicts.Conflict.factory(
3192
 
                c_type, action=action, path=modified_path,
3193
 
                file_id=modified_id,
3194
 
                conflict_path=conflicting_path,
3195
 
                conflict_file_id=conflicting_id)
 
2819
            yield Conflict.factory(c_type, action=action, path=modified_path,
 
2820
                                   file_id=modified_id,
 
2821
                                   conflict_path=conflicting_path,
 
2822
                                   conflict_file_id=conflicting_id)
3196
2823
 
3197
2824
 
3198
2825
class _FileMover(object):
3203
2830
        self.pending_deletions = []
3204
2831
 
3205
2832
    def rename(self, from_, to):
3206
 
        """Rename a file from one path to another."""
 
2833
        """Rename a file from one path to another.  Functions like os.rename"""
3207
2834
        try:
3208
2835
            os.rename(from_, to)
3209
2836
        except OSError, e:
3210
2837
            if e.errno in (errno.EEXIST, errno.ENOTEMPTY):
3211
2838
                raise errors.FileExists(to, str(e))
3212
 
            # normal OSError doesn't include filenames so it's hard to see where
3213
 
            # the problem is, see https://bugs.launchpad.net/bzr/+bug/491763
3214
 
            raise errors.TransformRenameFailed(from_, to, str(e), e.errno)
 
2839
            raise
3215
2840
        self.past_renames.append((from_, to))
3216
2841
 
3217
2842
    def pre_delete(self, from_, to):
3227
2852
    def rollback(self):
3228
2853
        """Reverse all renames that have been performed"""
3229
2854
        for from_, to in reversed(self.past_renames):
3230
 
            try:
3231
 
                os.rename(to, from_)
3232
 
            except OSError, e:
3233
 
                raise errors.TransformRenameFailed(to, from_, str(e), e.errno)
 
2855
            os.rename(to, from_)
3234
2856
        # after rollback, don't reuse _FileMover
3235
2857
        past_renames = None
3236
2858
        pending_deletions = None