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  • Committer: Aaron Bentley
  • Date: 2011-06-09 18:46:24 UTC
  • mto: (5954.6.3 795456-eager-test)
  • mto: This revision was merged to the branch mainline in revision 5967.
  • Revision ID: aaron@aaronbentley.com-20110609184624-3manailsshjbz2ve
Fix broken tests.

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1
 
# Copyright (C) 2006-2010 Canonical Ltd
 
1
# Copyright (C) 2006-2011 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.lazy_import import lazy_import
23
 
lazy_import(globals(), """
 
22
from bzrlib import (
 
23
    errors,
 
24
    lazy_import,
 
25
    registry,
 
26
    trace,
 
27
    tree,
 
28
    )
 
29
lazy_import.lazy_import(globals(), """
24
30
from bzrlib import (
25
31
    annotate,
26
32
    bencode,
27
33
    bzrdir,
 
34
    commit,
28
35
    delta,
29
36
    errors,
30
37
    inventory,
32
39
    osutils,
33
40
    revision as _mod_revision,
34
41
    ui,
 
42
    urlutils,
35
43
    )
36
44
""")
37
45
from bzrlib.errors import (DuplicateKey, MalformedTransform, NoSuchFile,
39
47
                           ExistingLimbo, ImmortalLimbo, NoFinalPath,
40
48
                           UnableCreateSymlink)
41
49
from bzrlib.filters import filtered_output_bytes, ContentFilterContext
42
 
from bzrlib.inventory import InventoryEntry
43
50
from bzrlib.osutils import (
44
51
    delete_any,
45
52
    file_kind,
46
53
    has_symlinks,
47
 
    lexists,
48
54
    pathjoin,
49
55
    sha_file,
50
56
    splitpath,
51
57
    supports_executable,
52
 
)
 
58
    )
53
59
from bzrlib.progress import ProgressPhase
54
60
from bzrlib.symbol_versioning import (
55
 
        deprecated_function,
56
 
        deprecated_in,
57
 
        )
58
 
from bzrlib.trace import mutter, warning
59
 
from bzrlib import tree
60
 
import bzrlib.ui
61
 
import bzrlib.urlutils as urlutils
 
61
    deprecated_function,
 
62
    deprecated_in,
 
63
    deprecated_method,
 
64
    )
62
65
 
63
66
 
64
67
ROOT_PARENT = "root-parent"
65
68
 
66
 
 
67
69
def unique_add(map, key, value):
68
70
    if key in map:
69
71
        raise DuplicateKey(key=key)
70
72
    map[key] = value
71
73
 
72
74
 
 
75
 
73
76
class _TransformResults(object):
74
77
    def __init__(self, modified_paths, rename_count):
75
78
        object.__init__(self)
99
102
        self._new_parent = {}
100
103
        # mapping of trans_id with new contents -> new file_kind
101
104
        self._new_contents = {}
 
105
        # mapping of trans_id => (sha1 of content, stat_value)
 
106
        self._observed_sha1s = {}
102
107
        # Set of trans_ids whose contents will be removed
103
108
        self._removed_contents = set()
104
109
        # Mapping of trans_id -> new execute-bit value
123
128
            self._new_root = self.trans_id_tree_file_id(root_id)
124
129
        else:
125
130
            self._new_root = None
126
 
        # Indictor of whether the transform has been applied
 
131
        # Indicator of whether the transform has been applied
127
132
        self._done = False
128
133
        # A progress bar
129
134
        self._pb = pb
132
137
        # A counter of how many files have been renamed
133
138
        self.rename_count = 0
134
139
 
 
140
    def __enter__(self):
 
141
        """Support Context Manager API."""
 
142
        return self
 
143
 
 
144
    def __exit__(self, exc_type, exc_val, exc_tb):
 
145
        """Support Context Manager API."""
 
146
        self.finalize()
 
147
 
135
148
    def finalize(self):
136
149
        """Release the working tree lock, if held.
137
150
 
314
327
 
315
328
    def delete_contents(self, trans_id):
316
329
        """Schedule the contents of a path entry for deletion"""
317
 
        # Ensure that the object exists in the WorkingTree, this will raise an
318
 
        # exception if there is a problem
319
 
        self.tree_kind(trans_id)
320
 
        self._removed_contents.add(trans_id)
 
330
        kind = self.tree_kind(trans_id)
 
331
        if kind is not None:
 
332
            self._removed_contents.add(trans_id)
321
333
 
322
334
    def cancel_deletion(self, trans_id):
323
335
        """Cancel a scheduled deletion"""
382
394
    def _inventory_altered(self):
383
395
        """Get the trans_ids and paths of files needing new inv entries."""
384
396
        new_ids = set()
385
 
        for id_set in [self._new_name, self._new_parent, self._new_id,
 
397
        changed_id = set(t for t in self._new_id
 
398
                         if self._new_id[t] != self.tree_file_id(t))
 
399
        for id_set in [self._new_name, self._new_parent, changed_id,
386
400
                       self._new_executability]:
387
401
            new_ids.update(id_set)
388
402
        changed_kind = set(self._removed_contents)
389
403
        changed_kind.intersection_update(self._new_contents)
390
404
        changed_kind.difference_update(new_ids)
391
 
        changed_kind = (t for t in changed_kind if self.tree_kind(t) !=
392
 
                        self.final_kind(t))
 
405
        changed_kind = (t for t in changed_kind
 
406
                        if self.tree_kind(t) != self.final_kind(t))
393
407
        new_ids.update(changed_kind)
 
408
        file_id_changed = set(t for t in changed_id if t in self._removed_id)
 
409
        for parent_trans_id in file_id_changed:
 
410
            new_ids.update(self.iter_tree_children(parent_trans_id))
394
411
        return sorted(FinalPaths(self).get_paths(new_ids))
395
412
 
396
413
    def final_kind(self, trans_id):
397
414
        """Determine the final file kind, after any changes applied.
398
415
 
399
 
        Raises NoSuchFile if the file does not exist/has no contents.
400
 
        (It is conceivable that a path would be created without the
401
 
        corresponding contents insertion command)
 
416
        :return: None if the file does not exist/has no contents.  (It is
 
417
            conceivable that a path would be created without the corresponding
 
418
            contents insertion command)
402
419
        """
403
420
        if trans_id in self._new_contents:
404
421
            return self._new_contents[trans_id]
405
422
        elif trans_id in self._removed_contents:
406
 
            raise NoSuchFile(None)
 
423
            return None
407
424
        else:
408
425
            return self.tree_kind(trans_id)
409
426
 
522
539
        for trans_id in self._removed_id:
523
540
            file_id = self.tree_file_id(trans_id)
524
541
            if file_id is not None:
 
542
                # XXX: This seems like something that should go via a different
 
543
                #      indirection.
525
544
                if self._tree.inventory[file_id].kind == 'directory':
526
545
                    parents.append(trans_id)
527
546
            elif self.tree_kind(trans_id) == 'directory':
531
550
            # ensure that all children are registered with the transaction
532
551
            list(self.iter_tree_children(parent_id))
533
552
 
 
553
    @deprecated_method(deprecated_in((2, 3, 0)))
534
554
    def has_named_child(self, by_parent, parent_id, name):
535
 
        try:
536
 
            children = by_parent[parent_id]
537
 
        except KeyError:
538
 
            children = []
539
 
        for child in children:
 
555
        return self._has_named_child(
 
556
            name, parent_id, known_children=by_parent.get(parent_id, []))
 
557
 
 
558
    def _has_named_child(self, name, parent_id, known_children):
 
559
        """Does a parent already have a name child.
 
560
 
 
561
        :param name: The searched for name.
 
562
 
 
563
        :param parent_id: The parent for which the check is made.
 
564
 
 
565
        :param known_children: The already known children. This should have
 
566
            been recently obtained from `self.by_parent.get(parent_id)`
 
567
            (or will be if None is passed).
 
568
        """
 
569
        if known_children is None:
 
570
            known_children = self.by_parent().get(parent_id, [])
 
571
        for child in known_children:
540
572
            if self.final_name(child) == name:
541
573
                return True
542
 
        try:
543
 
            path = self._tree_id_paths[parent_id]
544
 
        except KeyError:
 
574
        parent_path = self._tree_id_paths.get(parent_id, None)
 
575
        if parent_path is None:
 
576
            # No parent... no children
545
577
            return False
546
 
        childpath = joinpath(path, name)
547
 
        child_id = self._tree_path_ids.get(childpath)
 
578
        child_path = joinpath(parent_path, name)
 
579
        child_id = self._tree_path_ids.get(child_path, None)
548
580
        if child_id is None:
549
 
            return lexists(self._tree.abspath(childpath))
 
581
            # Not known by the tree transform yet, check the filesystem
 
582
            return osutils.lexists(self._tree.abspath(child_path))
550
583
        else:
551
 
            if self.final_parent(child_id) != parent_id:
552
 
                return False
553
 
            if child_id in self._removed_contents:
554
 
                # XXX What about dangling file-ids?
555
 
                return False
556
 
            else:
557
 
                return True
 
584
            raise AssertionError('child_id is missing: %s, %s, %s'
 
585
                                 % (name, parent_id, child_id))
 
586
 
 
587
    def _available_backup_name(self, name, target_id):
 
588
        """Find an available backup name.
 
589
 
 
590
        :param name: The basename of the file.
 
591
 
 
592
        :param target_id: The directory trans_id where the backup should 
 
593
            be placed.
 
594
        """
 
595
        known_children = self.by_parent().get(target_id, [])
 
596
        return osutils.available_backup_name(
 
597
            name,
 
598
            lambda base: self._has_named_child(
 
599
                base, target_id, known_children))
558
600
 
559
601
    def _parent_loops(self):
560
602
        """No entry should be its own ancestor"""
595
637
        """
596
638
        conflicts = []
597
639
        for trans_id in self._new_id.iterkeys():
598
 
            try:
599
 
                kind = self.final_kind(trans_id)
600
 
            except NoSuchFile:
 
640
            kind = self.final_kind(trans_id)
 
641
            if kind is None:
601
642
                conflicts.append(('versioning no contents', trans_id))
602
643
                continue
603
 
            if not InventoryEntry.versionable_kind(kind):
 
644
            if not inventory.InventoryEntry.versionable_kind(kind):
604
645
                conflicts.append(('versioning bad kind', trans_id, kind))
605
646
        return conflicts
606
647
 
617
658
            if self.final_file_id(trans_id) is None:
618
659
                conflicts.append(('unversioned executability', trans_id))
619
660
            else:
620
 
                try:
621
 
                    non_file = self.final_kind(trans_id) != "file"
622
 
                except NoSuchFile:
623
 
                    non_file = True
624
 
                if non_file is True:
 
661
                if self.final_kind(trans_id) != "file":
625
662
                    conflicts.append(('non-file executability', trans_id))
626
663
        return conflicts
627
664
 
629
666
        """Check for overwrites (not permitted on Win32)"""
630
667
        conflicts = []
631
668
        for trans_id in self._new_contents:
632
 
            try:
633
 
                self.tree_kind(trans_id)
634
 
            except NoSuchFile:
 
669
            if self.tree_kind(trans_id) is None:
635
670
                continue
636
671
            if trans_id not in self._removed_contents:
637
672
                conflicts.append(('overwrite', trans_id,
644
679
        if (self._new_name, self._new_parent) == ({}, {}):
645
680
            return conflicts
646
681
        for children in by_parent.itervalues():
647
 
            name_ids = [(self.final_name(t), t) for t in children]
648
 
            if not self._case_sensitive_target:
649
 
                name_ids = [(n.lower(), t) for n, t in name_ids]
 
682
            name_ids = []
 
683
            for child_tid in children:
 
684
                name = self.final_name(child_tid)
 
685
                if name is not None:
 
686
                    # Keep children only if they still exist in the end
 
687
                    if not self._case_sensitive_target:
 
688
                        name = name.lower()
 
689
                    name_ids.append((name, child_tid))
650
690
            name_ids.sort()
651
691
            last_name = None
652
692
            last_trans_id = None
653
693
            for name, trans_id in name_ids:
654
 
                try:
655
 
                    kind = self.final_kind(trans_id)
656
 
                except NoSuchFile:
657
 
                    kind = None
 
694
                kind = self.final_kind(trans_id)
658
695
                file_id = self.final_file_id(trans_id)
659
696
                if kind is None and file_id is None:
660
697
                    continue
679
716
        return conflicts
680
717
 
681
718
    def _parent_type_conflicts(self, by_parent):
682
 
        """parents must have directory 'contents'."""
 
719
        """Children must have a directory parent"""
683
720
        conflicts = []
684
721
        for parent_id, children in by_parent.iteritems():
685
722
            if parent_id is ROOT_PARENT:
686
723
                continue
687
 
            if not self._any_contents(children):
 
724
            no_children = True
 
725
            for child_id in children:
 
726
                if self.final_kind(child_id) is not None:
 
727
                    no_children = False
 
728
                    break
 
729
            if no_children:
688
730
                continue
689
 
            for child in children:
690
 
                try:
691
 
                    self.final_kind(child)
692
 
                except NoSuchFile:
693
 
                    continue
694
 
            try:
695
 
                kind = self.final_kind(parent_id)
696
 
            except NoSuchFile:
697
 
                kind = None
 
731
            # There is at least a child, so we need an existing directory to
 
732
            # contain it.
 
733
            kind = self.final_kind(parent_id)
698
734
            if kind is None:
 
735
                # The directory will be deleted
699
736
                conflicts.append(('missing parent', parent_id))
700
737
            elif kind != "directory":
 
738
                # Meh, we need a *directory* to put something in it
701
739
                conflicts.append(('non-directory parent', parent_id))
702
740
        return conflicts
703
741
 
704
 
    def _any_contents(self, trans_ids):
705
 
        """Return true if any of the trans_ids, will have contents."""
706
 
        for trans_id in trans_ids:
707
 
            try:
708
 
                kind = self.final_kind(trans_id)
709
 
            except NoSuchFile:
710
 
                continue
711
 
            return True
712
 
        return False
713
 
 
714
742
    def _set_executability(self, path, trans_id):
715
743
        """Set the executability of versioned files """
716
744
        if supports_executable():
738
766
        return trans_id
739
767
 
740
768
    def new_file(self, name, parent_id, contents, file_id=None,
741
 
                 executable=None):
 
769
                 executable=None, sha1=None):
742
770
        """Convenience method to create files.
743
771
 
744
772
        name is the name of the file to create.
751
779
        trans_id = self._new_entry(name, parent_id, file_id)
752
780
        # TODO: rather than scheduling a set_executable call,
753
781
        # have create_file create the file with the right mode.
754
 
        self.create_file(contents, trans_id)
 
782
        self.create_file(contents, trans_id, sha1=sha1)
755
783
        if executable is not None:
756
784
            self.set_executability(executable, trans_id)
757
785
        return trans_id
780
808
        self.create_symlink(target, trans_id)
781
809
        return trans_id
782
810
 
 
811
    def new_orphan(self, trans_id, parent_id):
 
812
        """Schedule an item to be orphaned.
 
813
 
 
814
        When a directory is about to be removed, its children, if they are not
 
815
        versioned are moved out of the way: they don't have a parent anymore.
 
816
 
 
817
        :param trans_id: The trans_id of the existing item.
 
818
        :param parent_id: The parent trans_id of the item.
 
819
        """
 
820
        raise NotImplementedError(self.new_orphan)
 
821
 
 
822
    def _get_potential_orphans(self, dir_id):
 
823
        """Find the potential orphans in a directory.
 
824
 
 
825
        A directory can't be safely deleted if there are versioned files in it.
 
826
        If all the contained files are unversioned then they can be orphaned.
 
827
 
 
828
        The 'None' return value means that the directory contains at least one
 
829
        versioned file and should not be deleted.
 
830
 
 
831
        :param dir_id: The directory trans id.
 
832
 
 
833
        :return: A list of the orphan trans ids or None if at least one
 
834
             versioned file is present.
 
835
        """
 
836
        orphans = []
 
837
        # Find the potential orphans, stop if one item should be kept
 
838
        for child_tid in self.by_parent()[dir_id]:
 
839
            if child_tid in self._removed_contents:
 
840
                # The child is removed as part of the transform. Since it was
 
841
                # versioned before, it's not an orphan
 
842
                continue
 
843
            elif self.final_file_id(child_tid) is None:
 
844
                # The child is not versioned
 
845
                orphans.append(child_tid)
 
846
            else:
 
847
                # We have a versioned file here, searching for orphans is
 
848
                # meaningless.
 
849
                orphans = None
 
850
                break
 
851
        return orphans
 
852
 
783
853
    def _affected_ids(self):
784
854
        """Return the set of transform ids affected by the transform"""
785
855
        trans_ids = set(self._removed_id)
844
914
        Return a (name, parent, kind, executable) tuple
845
915
        """
846
916
        to_name = self.final_name(to_trans_id)
847
 
        try:
848
 
            to_kind = self.final_kind(to_trans_id)
849
 
        except NoSuchFile:
850
 
            to_kind = None
 
917
        to_kind = self.final_kind(to_trans_id)
851
918
        to_parent = self.final_file_id(self.final_parent(to_trans_id))
852
919
        if to_trans_id in self._new_executability:
853
920
            to_executable = self._new_executability[to_trans_id]
927
994
        """
928
995
        return _PreviewTree(self)
929
996
 
930
 
    def commit(self, branch, message, merge_parents=None, strict=False):
 
997
    def commit(self, branch, message, merge_parents=None, strict=False,
 
998
               timestamp=None, timezone=None, committer=None, authors=None,
 
999
               revprops=None, revision_id=None):
931
1000
        """Commit the result of this TreeTransform to a branch.
932
1001
 
933
1002
        :param branch: The branch to commit to.
934
1003
        :param message: The message to attach to the commit.
935
 
        :param merge_parents: Additional parents specified by pending merges.
 
1004
        :param merge_parents: Additional parent revision-ids specified by
 
1005
            pending merges.
 
1006
        :param strict: If True, abort the commit if there are unversioned
 
1007
            files.
 
1008
        :param timestamp: if not None, seconds-since-epoch for the time and
 
1009
            date.  (May be a float.)
 
1010
        :param timezone: Optional timezone for timestamp, as an offset in
 
1011
            seconds.
 
1012
        :param committer: Optional committer in email-id format.
 
1013
            (e.g. "J Random Hacker <jrandom@example.com>")
 
1014
        :param authors: Optional list of authors in email-id format.
 
1015
        :param revprops: Optional dictionary of revision properties.
 
1016
        :param revision_id: Optional revision id.  (Specifying a revision-id
 
1017
            may reduce performance for some non-native formats.)
936
1018
        :return: The revision_id of the revision committed.
937
1019
        """
938
1020
        self._check_malformed()
955
1037
        if self._tree.get_revision_id() != last_rev_id:
956
1038
            raise ValueError('TreeTransform not based on branch basis: %s' %
957
1039
                             self._tree.get_revision_id())
958
 
        builder = branch.get_commit_builder(parent_ids)
 
1040
        revprops = commit.Commit.update_revprops(revprops, branch, authors)
 
1041
        builder = branch.get_commit_builder(parent_ids,
 
1042
                                            timestamp=timestamp,
 
1043
                                            timezone=timezone,
 
1044
                                            committer=committer,
 
1045
                                            revprops=revprops,
 
1046
                                            revision_id=revision_id)
959
1047
        preview = self.get_preview_tree()
960
1048
        list(builder.record_iter_changes(preview, last_rev_id,
961
1049
                                         self.iter_changes()))
1097
1185
        if self._tree is None:
1098
1186
            return
1099
1187
        try:
1100
 
            entries = [(self._limbo_name(t), t, k) for t, k in
1101
 
                       self._new_contents.iteritems()]
1102
 
            entries.sort(reverse=True)
1103
 
            for path, trans_id, kind in entries:
1104
 
                delete_any(path)
 
1188
            limbo_paths = sorted(self._limbo_files.values(), reverse=True)
 
1189
            for path in limbo_paths:
 
1190
                try:
 
1191
                    delete_any(path)
 
1192
                except OSError, e:
 
1193
                    if e.errno != errno.ENOENT:
 
1194
                        raise
 
1195
                    # XXX: warn? perhaps we just got interrupted at an
 
1196
                    # inconvenient moment, but perhaps files are disappearing
 
1197
                    # from under us?
1105
1198
            try:
1106
1199
                delete_any(self._limbodir)
1107
1200
            except OSError:
1160
1253
            if trans_id not in self._new_contents:
1161
1254
                continue
1162
1255
            new_path = self._limbo_name(trans_id)
1163
 
            osutils.rename(old_path, new_path)
 
1256
            os.rename(old_path, new_path)
1164
1257
            for descendant in self._limbo_descendants(trans_id):
1165
1258
                desc_path = self._limbo_files[descendant]
1166
1259
                desc_path = new_path + desc_path[len(old_path):]
1173
1266
            descendants.update(self._limbo_descendants(descendant))
1174
1267
        return descendants
1175
1268
 
1176
 
    def create_file(self, contents, trans_id, mode_id=None):
 
1269
    def create_file(self, contents, trans_id, mode_id=None, sha1=None):
1177
1270
        """Schedule creation of a new file.
1178
1271
 
1179
 
        See also new_file.
1180
 
 
1181
 
        Contents is an iterator of strings, all of which will be written
1182
 
        to the target destination.
1183
 
 
1184
 
        New file takes the permissions of any existing file with that id,
1185
 
        unless mode_id is specified.
 
1272
        :seealso: new_file.
 
1273
 
 
1274
        :param contents: an iterator of strings, all of which will be written
 
1275
            to the target destination.
 
1276
        :param trans_id: TreeTransform handle
 
1277
        :param mode_id: If not None, force the mode of the target file to match
 
1278
            the mode of the object referenced by mode_id.
 
1279
            Otherwise, we will try to preserve mode bits of an existing file.
 
1280
        :param sha1: If the sha1 of this content is already known, pass it in.
 
1281
            We can use it to prevent future sha1 computations.
1186
1282
        """
1187
1283
        name = self._limbo_name(trans_id)
1188
1284
        f = open(name, 'wb')
1189
1285
        try:
1190
 
            try:
1191
 
                unique_add(self._new_contents, trans_id, 'file')
1192
 
            except:
1193
 
                # Clean up the file, it never got registered so
1194
 
                # TreeTransform.finalize() won't clean it up.
1195
 
                f.close()
1196
 
                os.unlink(name)
1197
 
                raise
1198
 
 
 
1286
            unique_add(self._new_contents, trans_id, 'file')
1199
1287
            f.writelines(contents)
1200
1288
        finally:
1201
1289
            f.close()
1202
1290
        self._set_mtime(name)
1203
1291
        self._set_mode(trans_id, mode_id, S_ISREG)
 
1292
        # It is unfortunate we have to use lstat instead of fstat, but we just
 
1293
        # used utime and chmod on the file, so we need the accurate final
 
1294
        # details.
 
1295
        if sha1 is not None:
 
1296
            self._observed_sha1s[trans_id] = (sha1, osutils.lstat(name))
1204
1297
 
1205
1298
    def _read_file_chunks(self, trans_id):
1206
1299
        cur_file = open(self._limbo_name(trans_id), 'rb')
1265
1358
    def cancel_creation(self, trans_id):
1266
1359
        """Cancel the creation of new file contents."""
1267
1360
        del self._new_contents[trans_id]
 
1361
        if trans_id in self._observed_sha1s:
 
1362
            del self._observed_sha1s[trans_id]
1268
1363
        children = self._limbo_children.get(trans_id)
1269
1364
        # if this is a limbo directory with children, move them before removing
1270
1365
        # the directory
1274
1369
            del self._limbo_children_names[trans_id]
1275
1370
        delete_any(self._limbo_name(trans_id))
1276
1371
 
 
1372
    def new_orphan(self, trans_id, parent_id):
 
1373
        # FIXME: There is no tree config, so we use the branch one (it's weird
 
1374
        # to define it this way as orphaning can only occur in a working tree,
 
1375
        # but that's all we have (for now). It will find the option in
 
1376
        # locations.conf or bazaar.conf though) -- vila 20100916
 
1377
        conf = self._tree.branch.get_config()
 
1378
        conf_var_name = 'bzr.transform.orphan_policy'
 
1379
        orphan_policy = conf.get_user_option(conf_var_name)
 
1380
        default_policy = orphaning_registry.default_key
 
1381
        if orphan_policy is None:
 
1382
            orphan_policy = default_policy
 
1383
        if orphan_policy not in orphaning_registry:
 
1384
            trace.warning('%s (from %s) is not a known policy, defaulting '
 
1385
                'to %s' % (orphan_policy, conf_var_name, default_policy))
 
1386
            orphan_policy = default_policy
 
1387
        handle_orphan = orphaning_registry.get(orphan_policy)
 
1388
        handle_orphan(self, trans_id, parent_id)
 
1389
 
 
1390
 
 
1391
class OrphaningError(errors.BzrError):
 
1392
 
 
1393
    # Only bugs could lead to such exception being seen by the user
 
1394
    internal_error = True
 
1395
    _fmt = "Error while orphaning %s in %s directory"
 
1396
 
 
1397
    def __init__(self, orphan, parent):
 
1398
        errors.BzrError.__init__(self)
 
1399
        self.orphan = orphan
 
1400
        self.parent = parent
 
1401
 
 
1402
 
 
1403
class OrphaningForbidden(OrphaningError):
 
1404
 
 
1405
    _fmt = "Policy: %s doesn't allow creating orphans."
 
1406
 
 
1407
    def __init__(self, policy):
 
1408
        errors.BzrError.__init__(self)
 
1409
        self.policy = policy
 
1410
 
 
1411
 
 
1412
def move_orphan(tt, orphan_id, parent_id):
 
1413
    """See TreeTransformBase.new_orphan.
 
1414
 
 
1415
    This creates a new orphan in the `bzr-orphans` dir at the root of the
 
1416
    `TreeTransform`.
 
1417
 
 
1418
    :param tt: The TreeTransform orphaning `trans_id`.
 
1419
 
 
1420
    :param orphan_id: The trans id that should be orphaned.
 
1421
 
 
1422
    :param parent_id: The orphan parent trans id.
 
1423
    """
 
1424
    # Add the orphan dir if it doesn't exist
 
1425
    orphan_dir_basename = 'bzr-orphans'
 
1426
    od_id = tt.trans_id_tree_path(orphan_dir_basename)
 
1427
    if tt.final_kind(od_id) is None:
 
1428
        tt.create_directory(od_id)
 
1429
    parent_path = tt._tree_id_paths[parent_id]
 
1430
    # Find a name that doesn't exist yet in the orphan dir
 
1431
    actual_name = tt.final_name(orphan_id)
 
1432
    new_name = tt._available_backup_name(actual_name, od_id)
 
1433
    tt.adjust_path(new_name, od_id, orphan_id)
 
1434
    trace.warning('%s has been orphaned in %s'
 
1435
                  % (joinpath(parent_path, actual_name), orphan_dir_basename))
 
1436
 
 
1437
 
 
1438
def refuse_orphan(tt, orphan_id, parent_id):
 
1439
    """See TreeTransformBase.new_orphan.
 
1440
 
 
1441
    This refuses to create orphan, letting the caller handle the conflict.
 
1442
    """
 
1443
    raise OrphaningForbidden('never')
 
1444
 
 
1445
 
 
1446
orphaning_registry = registry.Registry()
 
1447
orphaning_registry.register(
 
1448
    'conflict', refuse_orphan,
 
1449
    'Leave orphans in place and create a conflict on the directory.')
 
1450
orphaning_registry.register(
 
1451
    'move', move_orphan,
 
1452
    'Move orphans into the bzr-orphans directory.')
 
1453
orphaning_registry._set_default_key('conflict')
 
1454
 
1277
1455
 
1278
1456
class TreeTransform(DiskTreeTransform):
1279
1457
    """Represent a tree transformation.
1397
1575
    def tree_kind(self, trans_id):
1398
1576
        """Determine the file kind in the working tree.
1399
1577
 
1400
 
        Raises NoSuchFile if the file does not exist
 
1578
        :returns: The file kind or None if the file does not exist
1401
1579
        """
1402
1580
        path = self._tree_id_paths.get(trans_id)
1403
1581
        if path is None:
1404
 
            raise NoSuchFile(None)
 
1582
            return None
1405
1583
        try:
1406
1584
            return file_kind(self._tree.abspath(path))
1407
 
        except OSError, e:
1408
 
            if e.errno != errno.ENOENT:
1409
 
                raise
1410
 
            else:
1411
 
                raise NoSuchFile(path)
 
1585
        except errors.NoSuchFile:
 
1586
            return None
1412
1587
 
1413
1588
    def _set_mode(self, trans_id, mode_id, typefunc):
1414
1589
        """Set the mode of new file contents.
1520
1695
        """
1521
1696
        if not no_conflicts:
1522
1697
            self._check_malformed()
1523
 
        child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
 
1698
        child_pb = ui.ui_factory.nested_progress_bar()
1524
1699
        try:
1525
1700
            if precomputed_delta is None:
1526
1701
                child_pb.update('Apply phase', 0, 2)
1546
1721
        finally:
1547
1722
            child_pb.finished()
1548
1723
        self._tree.apply_inventory_delta(inventory_delta)
 
1724
        self._apply_observed_sha1s()
1549
1725
        self._done = True
1550
1726
        self.finalize()
1551
1727
        return _TransformResults(modified_paths, self.rename_count)
1553
1729
    def _generate_inventory_delta(self):
1554
1730
        """Generate an inventory delta for the current transform."""
1555
1731
        inventory_delta = []
1556
 
        child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
 
1732
        child_pb = ui.ui_factory.nested_progress_bar()
1557
1733
        new_paths = self._inventory_altered()
1558
1734
        total_entries = len(new_paths) + len(self._removed_id)
1559
1735
        try:
1583
1759
                if file_id is None:
1584
1760
                    continue
1585
1761
                needs_entry = False
1586
 
                try:
1587
 
                    kind = self.final_kind(trans_id)
1588
 
                except NoSuchFile:
 
1762
                kind = self.final_kind(trans_id)
 
1763
                if kind is None:
1589
1764
                    kind = self._tree.stored_kind(file_id)
1590
1765
                parent_trans_id = self.final_parent(trans_id)
1591
1766
                parent_file_id = new_path_file_ids.get(parent_trans_id)
1622
1797
        """
1623
1798
        tree_paths = list(self._tree_path_ids.iteritems())
1624
1799
        tree_paths.sort(reverse=True)
1625
 
        child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
 
1800
        child_pb = ui.ui_factory.nested_progress_bar()
1626
1801
        try:
1627
1802
            for num, data in enumerate(tree_paths):
1628
1803
                path, trans_id = data
1635
1810
                      or trans_id in self._new_parent):
1636
1811
                    try:
1637
1812
                        mover.rename(full_path, self._limbo_name(trans_id))
1638
 
                    except OSError, e:
 
1813
                    except errors.TransformRenameFailed, e:
1639
1814
                        if e.errno != errno.ENOENT:
1640
1815
                            raise
1641
1816
                    else:
1657
1832
        modified_paths = []
1658
1833
        new_path_file_ids = dict((t, self.final_file_id(t)) for p, t in
1659
1834
                                 new_paths)
1660
 
        child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
 
1835
        child_pb = ui.ui_factory.nested_progress_bar()
1661
1836
        try:
1662
1837
            for num, (path, trans_id) in enumerate(new_paths):
1663
1838
                if (num % 10) == 0:
1666
1841
                if trans_id in self._needs_rename:
1667
1842
                    try:
1668
1843
                        mover.rename(self._limbo_name(trans_id), full_path)
1669
 
                    except OSError, e:
 
1844
                    except errors.TransformRenameFailed, e:
1670
1845
                        # We may be renaming a dangling inventory id
1671
1846
                        if e.errno != errno.ENOENT:
1672
1847
                            raise
1673
1848
                    else:
1674
1849
                        self.rename_count += 1
 
1850
                    # TODO: if trans_id in self._observed_sha1s, we should
 
1851
                    #       re-stat the final target, since ctime will be
 
1852
                    #       updated by the change.
1675
1853
                if (trans_id in self._new_contents or
1676
1854
                    self.path_changed(trans_id)):
1677
1855
                    if trans_id in self._new_contents:
1678
1856
                        modified_paths.append(full_path)
1679
1857
                if trans_id in self._new_executability:
1680
1858
                    self._set_executability(path, trans_id)
 
1859
                if trans_id in self._observed_sha1s:
 
1860
                    o_sha1, o_st_val = self._observed_sha1s[trans_id]
 
1861
                    st = osutils.lstat(full_path)
 
1862
                    self._observed_sha1s[trans_id] = (o_sha1, st)
1681
1863
        finally:
1682
1864
            child_pb.finished()
 
1865
        for path, trans_id in new_paths:
 
1866
            # new_paths includes stuff like workingtree conflicts. Only the
 
1867
            # stuff in new_contents actually comes from limbo.
 
1868
            if trans_id in self._limbo_files:
 
1869
                del self._limbo_files[trans_id]
1683
1870
        self._new_contents.clear()
1684
1871
        return modified_paths
1685
1872
 
 
1873
    def _apply_observed_sha1s(self):
 
1874
        """After we have finished renaming everything, update observed sha1s
 
1875
 
 
1876
        This has to be done after self._tree.apply_inventory_delta, otherwise
 
1877
        it doesn't know anything about the files we are updating. Also, we want
 
1878
        to do this as late as possible, so that most entries end up cached.
 
1879
        """
 
1880
        # TODO: this doesn't update the stat information for directories. So
 
1881
        #       the first 'bzr status' will still need to rewrite
 
1882
        #       .bzr/checkout/dirstate. However, we at least don't need to
 
1883
        #       re-read all of the files.
 
1884
        # TODO: If the operation took a while, we could do a time.sleep(3) here
 
1885
        #       to allow the clock to tick over and ensure we won't have any
 
1886
        #       problems. (we could observe start time, and finish time, and if
 
1887
        #       it is less than eg 10% overhead, add a sleep call.)
 
1888
        paths = FinalPaths(self)
 
1889
        for trans_id, observed in self._observed_sha1s.iteritems():
 
1890
            path = paths.get_path(trans_id)
 
1891
            # We could get the file_id, but dirstate prefers to use the path
 
1892
            # anyway, and it is 'cheaper' to determine.
 
1893
            # file_id = self._new_id[trans_id]
 
1894
            self._tree._observed_sha1(None, path, observed)
 
1895
 
1686
1896
 
1687
1897
class TransformPreview(DiskTreeTransform):
1688
1898
    """A TreeTransform for generating preview trees.
1703
1913
    def tree_kind(self, trans_id):
1704
1914
        path = self._tree_id_paths.get(trans_id)
1705
1915
        if path is None:
1706
 
            raise NoSuchFile(None)
1707
 
        file_id = self._tree.path2id(path)
1708
 
        return self._tree.kind(file_id)
 
1916
            return None
 
1917
        kind = self._tree.path_content_summary(path)[0]
 
1918
        if kind == 'missing':
 
1919
            kind = None
 
1920
        return kind
1709
1921
 
1710
1922
    def _set_mode(self, trans_id, mode_id, typefunc):
1711
1923
        """Set the mode of new file contents.
1731
1943
            childpath = joinpath(path, child)
1732
1944
            yield self.trans_id_tree_path(childpath)
1733
1945
 
1734
 
 
1735
 
class _PreviewTree(tree.Tree):
 
1946
    def new_orphan(self, trans_id, parent_id):
 
1947
        raise NotImplementedError(self.new_orphan)
 
1948
 
 
1949
 
 
1950
class _PreviewTree(tree.InventoryTree):
1736
1951
    """Partial implementation of Tree to support show_diff_trees"""
1737
1952
 
1738
1953
    def __init__(self, transform):
1767
1982
                yield self._get_repository().revision_tree(revision_id)
1768
1983
 
1769
1984
    def _get_file_revision(self, file_id, vf, tree_revision):
1770
 
        parent_keys = [(file_id, self._file_revision(t, file_id)) for t in
 
1985
        parent_keys = [(file_id, t.get_file_revision(file_id)) for t in
1771
1986
                       self._iter_parent_trees()]
1772
1987
        vf.add_lines((file_id, tree_revision), parent_keys,
1773
 
                     self.get_file(file_id).readlines())
 
1988
                     self.get_file_lines(file_id))
1774
1989
        repo = self._get_repository()
1775
1990
        base_vf = repo.texts
1776
1991
        if base_vf not in vf.fallback_versionedfiles:
1777
1992
            vf.fallback_versionedfiles.append(base_vf)
1778
1993
        return tree_revision
1779
1994
 
1780
 
    def _stat_limbo_file(self, file_id):
1781
 
        trans_id = self._transform.trans_id_file_id(file_id)
 
1995
    def _stat_limbo_file(self, file_id=None, trans_id=None):
 
1996
        if trans_id is None:
 
1997
            trans_id = self._transform.trans_id_file_id(file_id)
1782
1998
        name = self._transform._limbo_name(trans_id)
1783
1999
        return os.lstat(name)
1784
2000
 
1798
2014
            executable = self.is_executable(file_id, path)
1799
2015
        return kind, executable, None
1800
2016
 
 
2017
    def is_locked(self):
 
2018
        return False
 
2019
 
1801
2020
    def lock_read(self):
1802
2021
        # Perhaps in theory, this should lock the TreeTransform?
1803
 
        pass
 
2022
        return self
1804
2023
 
1805
2024
    def unlock(self):
1806
2025
        pass
1904
2123
            if (specific_file_ids is not None
1905
2124
                and file_id not in specific_file_ids):
1906
2125
                continue
1907
 
            try:
1908
 
                kind = self._transform.final_kind(trans_id)
1909
 
            except NoSuchFile:
 
2126
            kind = self._transform.final_kind(trans_id)
 
2127
            if kind is None:
1910
2128
                kind = self._transform._tree.stored_kind(file_id)
1911
2129
            new_entry = inventory.make_entry(
1912
2130
                kind,
1997
2215
 
1998
2216
    def get_file_size(self, file_id):
1999
2217
        """See Tree.get_file_size"""
 
2218
        trans_id = self._transform.trans_id_file_id(file_id)
 
2219
        kind = self._transform.final_kind(trans_id)
 
2220
        if kind != 'file':
 
2221
            return None
 
2222
        if trans_id in self._transform._new_contents:
 
2223
            return self._stat_limbo_file(trans_id=trans_id).st_size
2000
2224
        if self.kind(file_id) == 'file':
2001
2225
            return self._transform._tree.get_file_size(file_id)
2002
2226
        else:
2030
2254
            except errors.NoSuchId:
2031
2255
                return False
2032
2256
 
 
2257
    def has_filename(self, path):
 
2258
        trans_id = self._path2trans_id(path)
 
2259
        if trans_id in self._transform._new_contents:
 
2260
            return True
 
2261
        elif trans_id in self._transform._removed_contents:
 
2262
            return False
 
2263
        else:
 
2264
            return self._transform._tree.has_filename(path)
 
2265
 
2033
2266
    def path_content_summary(self, path):
2034
2267
        trans_id = self._path2trans_id(path)
2035
2268
        tt = self._transform
2123
2356
                                   self.get_file(file_id).readlines(),
2124
2357
                                   default_revision)
2125
2358
 
2126
 
    def get_symlink_target(self, file_id):
 
2359
    def get_symlink_target(self, file_id, path=None):
2127
2360
        """See Tree.get_symlink_target"""
2128
2361
        if not self._content_change(file_id):
2129
2362
            return self._transform._tree.get_symlink_target(file_id)
2144
2377
                path_from_root = self._final_paths.get_path(child_id)
2145
2378
                basename = self._transform.final_name(child_id)
2146
2379
                file_id = self._transform.final_file_id(child_id)
2147
 
                try:
2148
 
                    kind = self._transform.final_kind(child_id)
 
2380
                kind  = self._transform.final_kind(child_id)
 
2381
                if kind is not None:
2149
2382
                    versioned_kind = kind
2150
 
                except NoSuchFile:
 
2383
                else:
2151
2384
                    kind = 'unknown'
2152
2385
                    versioned_kind = self._transform._tree.stored_kind(file_id)
2153
2386
                if versioned_kind == 'directory':
2266
2499
    for num, _unused in enumerate(wt.all_file_ids()):
2267
2500
        if num > 0:  # more than just a root
2268
2501
            raise errors.WorkingTreeAlreadyPopulated(base=wt.basedir)
2269
 
    existing_files = set()
2270
 
    for dir, files in wt.walkdirs():
2271
 
        existing_files.update(f[0] for f in files)
2272
2502
    file_trans_id = {}
2273
 
    top_pb = bzrlib.ui.ui_factory.nested_progress_bar()
 
2503
    top_pb = ui.ui_factory.nested_progress_bar()
2274
2504
    pp = ProgressPhase("Build phase", 2, top_pb)
2275
2505
    if tree.inventory.root is not None:
2276
2506
        # This is kind of a hack: we should be altering the root
2289
2519
        pp.next_phase()
2290
2520
        file_trans_id[wt.get_root_id()] = \
2291
2521
            tt.trans_id_tree_file_id(wt.get_root_id())
2292
 
        pb = bzrlib.ui.ui_factory.nested_progress_bar()
 
2522
        pb = ui.ui_factory.nested_progress_bar()
2293
2523
        try:
2294
2524
            deferred_contents = []
2295
2525
            num = 0
2298
2528
                precomputed_delta = []
2299
2529
            else:
2300
2530
                precomputed_delta = None
 
2531
            # Check if tree inventory has content. If so, we populate
 
2532
            # existing_files with the directory content. If there are no
 
2533
            # entries we skip populating existing_files as its not used.
 
2534
            # This improves performance and unncessary work on large
 
2535
            # directory trees. (#501307)
 
2536
            if total > 0:
 
2537
                existing_files = set()
 
2538
                for dir, files in wt.walkdirs():
 
2539
                    existing_files.update(f[0] for f in files)
2301
2540
            for num, (tree_path, entry) in \
2302
2541
                enumerate(tree.inventory.iter_entries_by_dir()):
2303
2542
                pb.update("Building tree", num - len(deferred_contents), total)
2333
2572
                    executable = tree.is_executable(file_id, tree_path)
2334
2573
                    if executable:
2335
2574
                        tt.set_executability(executable, trans_id)
2336
 
                    trans_data = (trans_id, tree_path)
 
2575
                    trans_data = (trans_id, tree_path, entry.text_sha1)
2337
2576
                    deferred_contents.append((file_id, trans_data))
2338
2577
                else:
2339
2578
                    file_trans_id[file_id] = new_by_entry(tt, entry, parent_id,
2355
2594
            precomputed_delta = None
2356
2595
        conflicts = cook_conflicts(raw_conflicts, tt)
2357
2596
        for conflict in conflicts:
2358
 
            warning(conflict)
 
2597
            trace.warning(unicode(conflict))
2359
2598
        try:
2360
2599
            wt.add_conflicts(conflicts)
2361
2600
        except errors.UnsupportedOperation:
2384
2623
        unchanged = dict(unchanged)
2385
2624
        new_desired_files = []
2386
2625
        count = 0
2387
 
        for file_id, (trans_id, tree_path) in desired_files:
 
2626
        for file_id, (trans_id, tree_path, text_sha1) in desired_files:
2388
2627
            accelerator_path = unchanged.get(file_id)
2389
2628
            if accelerator_path is None:
2390
 
                new_desired_files.append((file_id, (trans_id, tree_path)))
 
2629
                new_desired_files.append((file_id,
 
2630
                    (trans_id, tree_path, text_sha1)))
2391
2631
                continue
2392
2632
            pb.update('Adding file contents', count + offset, total)
2393
2633
            if hardlink:
2400
2640
                    contents = filtered_output_bytes(contents, filters,
2401
2641
                        ContentFilterContext(tree_path, tree))
2402
2642
                try:
2403
 
                    tt.create_file(contents, trans_id)
 
2643
                    tt.create_file(contents, trans_id, sha1=text_sha1)
2404
2644
                finally:
2405
2645
                    try:
2406
2646
                        contents.close()
2409
2649
                        pass
2410
2650
            count += 1
2411
2651
        offset += count
2412
 
    for count, ((trans_id, tree_path), contents) in enumerate(
 
2652
    for count, ((trans_id, tree_path, text_sha1), contents) in enumerate(
2413
2653
            tree.iter_files_bytes(new_desired_files)):
2414
2654
        if wt.supports_content_filtering():
2415
2655
            filters = wt._content_filter_stack(tree_path)
2416
2656
            contents = filtered_output_bytes(contents, filters,
2417
2657
                ContentFilterContext(tree_path, tree))
2418
 
        tt.create_file(contents, trans_id)
 
2658
        tt.create_file(contents, trans_id, sha1=text_sha1)
2419
2659
        pb.update('Adding file contents', count + offset, total)
2420
2660
 
2421
2661
 
2423
2663
    for child in tt.iter_tree_children(old_parent):
2424
2664
        tt.adjust_path(tt.final_name(child), new_parent, child)
2425
2665
 
 
2666
 
2426
2667
def _reparent_transform_children(tt, old_parent, new_parent):
2427
2668
    by_parent = tt.by_parent()
2428
2669
    for child in by_parent[old_parent]:
2429
2670
        tt.adjust_path(tt.final_name(child), new_parent, child)
2430
2671
    return by_parent[old_parent]
2431
2672
 
 
2673
 
2432
2674
def _content_match(tree, entry, file_id, kind, target_path):
2433
2675
    if entry.kind != kind:
2434
2676
        return False
2435
2677
    if entry.kind == "directory":
2436
2678
        return True
2437
2679
    if entry.kind == "file":
2438
 
        if tree.get_file(file_id).read() == file(target_path, 'rb').read():
2439
 
            return True
 
2680
        f = file(target_path, 'rb')
 
2681
        try:
 
2682
            if tree.get_file_text(file_id) == f.read():
 
2683
                return True
 
2684
        finally:
 
2685
            f.close()
2440
2686
    elif entry.kind == "symlink":
2441
2687
        if tree.get_symlink_target(file_id) == os.readlink(target_path):
2442
2688
            return True
2494
2740
        raise errors.BadFileKindError(name, kind)
2495
2741
 
2496
2742
 
2497
 
@deprecated_function(deprecated_in((1, 9, 0)))
2498
 
def create_by_entry(tt, entry, tree, trans_id, lines=None, mode_id=None):
2499
 
    """Create new file contents according to an inventory entry.
2500
 
 
2501
 
    DEPRECATED.  Use create_from_tree instead.
2502
 
    """
2503
 
    if entry.kind == "file":
2504
 
        if lines is None:
2505
 
            lines = tree.get_file(entry.file_id).readlines()
2506
 
        tt.create_file(lines, trans_id, mode_id=mode_id)
2507
 
    elif entry.kind == "symlink":
2508
 
        tt.create_symlink(tree.get_symlink_target(entry.file_id), trans_id)
2509
 
    elif entry.kind == "directory":
2510
 
        tt.create_directory(trans_id)
2511
 
 
2512
 
 
2513
2743
def create_from_tree(tt, trans_id, tree, file_id, bytes=None,
2514
2744
    filter_tree_path=None):
2515
2745
    """Create new file contents according to tree contents.
2546
2776
        tt.set_executability(entry.executable, trans_id)
2547
2777
 
2548
2778
 
 
2779
@deprecated_function(deprecated_in((2, 3, 0)))
2549
2780
def get_backup_name(entry, by_parent, parent_trans_id, tt):
2550
2781
    return _get_backup_name(entry.name, by_parent, parent_trans_id, tt)
2551
2782
 
2552
2783
 
 
2784
@deprecated_function(deprecated_in((2, 3, 0)))
2553
2785
def _get_backup_name(name, by_parent, parent_trans_id, tt):
2554
2786
    """Produce a backup-style name that appears to be available"""
2555
2787
    def name_gen():
2604
2836
                unversioned_filter=working_tree.is_ignored)
2605
2837
            delta.report_changes(tt.iter_changes(), change_reporter)
2606
2838
        for conflict in conflicts:
2607
 
            warning(conflict)
 
2839
            trace.warning(unicode(conflict))
2608
2840
        pp.next_phase()
2609
2841
        tt.apply()
2610
2842
        working_tree.set_merge_modified(merge_modified)
2618
2850
def _prepare_revert_transform(working_tree, target_tree, tt, filenames,
2619
2851
                              backups, pp, basis_tree=None,
2620
2852
                              merge_modified=None):
2621
 
    child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
 
2853
    child_pb = ui.ui_factory.nested_progress_bar()
2622
2854
    try:
2623
2855
        if merge_modified is None:
2624
2856
            merge_modified = working_tree.merge_modified()
2627
2859
                                      merge_modified, basis_tree)
2628
2860
    finally:
2629
2861
        child_pb.finished()
2630
 
    child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
 
2862
    child_pb = ui.ui_factory.nested_progress_bar()
2631
2863
    try:
2632
2864
        raw_conflicts = resolve_conflicts(tt, child_pb,
2633
2865
            lambda t, c: conflict_pass(t, c, target_tree))
2641
2873
                 backups, merge_modified, basis_tree=None):
2642
2874
    if basis_tree is not None:
2643
2875
        basis_tree.lock_read()
2644
 
    change_list = target_tree.iter_changes(working_tree,
 
2876
    # We ask the working_tree for its changes relative to the target, rather
 
2877
    # than the target changes relative to the working tree. Because WT4 has an
 
2878
    # optimizer to compare itself to a target, but no optimizer for the
 
2879
    # reverse.
 
2880
    change_list = working_tree.iter_changes(target_tree,
2645
2881
        specific_files=specific_files, pb=pb)
2646
2882
    if target_tree.get_root_id() is None:
2647
2883
        skip_root = True
2651
2887
        deferred_files = []
2652
2888
        for id_num, (file_id, path, changed_content, versioned, parent, name,
2653
2889
                kind, executable) in enumerate(change_list):
2654
 
            if skip_root and file_id[0] is not None and parent[0] is None:
 
2890
            target_path, wt_path = path
 
2891
            target_versioned, wt_versioned = versioned
 
2892
            target_parent, wt_parent = parent
 
2893
            target_name, wt_name = name
 
2894
            target_kind, wt_kind = kind
 
2895
            target_executable, wt_executable = executable
 
2896
            if skip_root and wt_parent is None:
2655
2897
                continue
2656
2898
            trans_id = tt.trans_id_file_id(file_id)
2657
2899
            mode_id = None
2658
2900
            if changed_content:
2659
2901
                keep_content = False
2660
 
                if kind[0] == 'file' and (backups or kind[1] is None):
 
2902
                if wt_kind == 'file' and (backups or target_kind is None):
2661
2903
                    wt_sha1 = working_tree.get_file_sha1(file_id)
2662
2904
                    if merge_modified.get(file_id) != wt_sha1:
2663
2905
                        # acquire the basis tree lazily to prevent the
2669
2911
                        if file_id in basis_tree:
2670
2912
                            if wt_sha1 != basis_tree.get_file_sha1(file_id):
2671
2913
                                keep_content = True
2672
 
                        elif kind[1] is None and not versioned[1]:
 
2914
                        elif target_kind is None and not target_versioned:
2673
2915
                            keep_content = True
2674
 
                if kind[0] is not None:
 
2916
                if wt_kind is not None:
2675
2917
                    if not keep_content:
2676
2918
                        tt.delete_contents(trans_id)
2677
 
                    elif kind[1] is not None:
2678
 
                        parent_trans_id = tt.trans_id_file_id(parent[0])
2679
 
                        by_parent = tt.by_parent()
2680
 
                        backup_name = _get_backup_name(name[0], by_parent,
2681
 
                                                       parent_trans_id, tt)
 
2919
                    elif target_kind is not None:
 
2920
                        parent_trans_id = tt.trans_id_file_id(wt_parent)
 
2921
                        backup_name = tt._available_backup_name(
 
2922
                            wt_name, parent_trans_id)
2682
2923
                        tt.adjust_path(backup_name, parent_trans_id, trans_id)
2683
 
                        new_trans_id = tt.create_path(name[0], parent_trans_id)
2684
 
                        if versioned == (True, True):
 
2924
                        new_trans_id = tt.create_path(wt_name, parent_trans_id)
 
2925
                        if wt_versioned and target_versioned:
2685
2926
                            tt.unversion_file(trans_id)
2686
2927
                            tt.version_file(file_id, new_trans_id)
2687
2928
                        # New contents should have the same unix perms as old
2688
2929
                        # contents
2689
2930
                        mode_id = trans_id
2690
2931
                        trans_id = new_trans_id
2691
 
                if kind[1] in ('directory', 'tree-reference'):
 
2932
                if target_kind in ('directory', 'tree-reference'):
2692
2933
                    tt.create_directory(trans_id)
2693
 
                    if kind[1] == 'tree-reference':
 
2934
                    if target_kind == 'tree-reference':
2694
2935
                        revision = target_tree.get_reference_revision(file_id,
2695
 
                                                                      path[1])
 
2936
                                                                      target_path)
2696
2937
                        tt.set_tree_reference(revision, trans_id)
2697
 
                elif kind[1] == 'symlink':
 
2938
                elif target_kind == 'symlink':
2698
2939
                    tt.create_symlink(target_tree.get_symlink_target(file_id),
2699
2940
                                      trans_id)
2700
 
                elif kind[1] == 'file':
 
2941
                elif target_kind == 'file':
2701
2942
                    deferred_files.append((file_id, (trans_id, mode_id)))
2702
2943
                    if basis_tree is None:
2703
2944
                        basis_tree = working_tree.basis_tree()
2711
2952
                        merge_modified[file_id] = new_sha1
2712
2953
 
2713
2954
                    # preserve the execute bit when backing up
2714
 
                    if keep_content and executable[0] == executable[1]:
2715
 
                        tt.set_executability(executable[1], trans_id)
2716
 
                elif kind[1] is not None:
2717
 
                    raise AssertionError(kind[1])
2718
 
            if versioned == (False, True):
 
2955
                    if keep_content and wt_executable == target_executable:
 
2956
                        tt.set_executability(target_executable, trans_id)
 
2957
                elif target_kind is not None:
 
2958
                    raise AssertionError(target_kind)
 
2959
            if not wt_versioned and target_versioned:
2719
2960
                tt.version_file(file_id, trans_id)
2720
 
            if versioned == (True, False):
 
2961
            if wt_versioned and not target_versioned:
2721
2962
                tt.unversion_file(trans_id)
2722
 
            if (name[1] is not None and
2723
 
                (name[0] != name[1] or parent[0] != parent[1])):
2724
 
                if name[1] == '' and parent[1] is None:
 
2963
            if (target_name is not None and
 
2964
                (wt_name != target_name or wt_parent != target_parent)):
 
2965
                if target_name == '' and target_parent is None:
2725
2966
                    parent_trans = ROOT_PARENT
2726
2967
                else:
2727
 
                    parent_trans = tt.trans_id_file_id(parent[1])
2728
 
                if parent[0] is None and versioned[0]:
2729
 
                    tt.adjust_root_path(name[1], parent_trans)
 
2968
                    parent_trans = tt.trans_id_file_id(target_parent)
 
2969
                if wt_parent is None and wt_versioned:
 
2970
                    tt.adjust_root_path(target_name, parent_trans)
2730
2971
                else:
2731
 
                    tt.adjust_path(name[1], parent_trans, trans_id)
2732
 
            if executable[0] != executable[1] and kind[1] == "file":
2733
 
                tt.set_executability(executable[1], trans_id)
 
2972
                    tt.adjust_path(target_name, parent_trans, trans_id)
 
2973
            if wt_executable != target_executable and target_kind == "file":
 
2974
                tt.set_executability(target_executable, trans_id)
2734
2975
        if working_tree.supports_content_filtering():
2735
2976
            for index, ((trans_id, mode_id), bytes) in enumerate(
2736
2977
                target_tree.iter_files_bytes(deferred_files)):
2807
3048
 
2808
3049
        elif c_type == 'missing parent':
2809
3050
            trans_id = conflict[1]
2810
 
            try:
2811
 
                tt.cancel_deletion(trans_id)
2812
 
                new_conflicts.add(('deleting parent', 'Not deleting',
2813
 
                                   trans_id))
2814
 
            except KeyError:
 
3051
            if trans_id in tt._removed_contents:
 
3052
                cancel_deletion = True
 
3053
                orphans = tt._get_potential_orphans(trans_id)
 
3054
                if orphans:
 
3055
                    cancel_deletion = False
 
3056
                    # All children are orphans
 
3057
                    for o in orphans:
 
3058
                        try:
 
3059
                            tt.new_orphan(o, trans_id)
 
3060
                        except OrphaningError:
 
3061
                            # Something bad happened so we cancel the directory
 
3062
                            # deletion which will leave it in place with a
 
3063
                            # conflict. The user can deal with it from there.
 
3064
                            # Note that this also catch the case where we don't
 
3065
                            # want to create orphans and leave the directory in
 
3066
                            # place.
 
3067
                            cancel_deletion = True
 
3068
                            break
 
3069
                if cancel_deletion:
 
3070
                    # Cancel the directory deletion
 
3071
                    tt.cancel_deletion(trans_id)
 
3072
                    new_conflicts.add(('deleting parent', 'Not deleting',
 
3073
                                       trans_id))
 
3074
            else:
2815
3075
                create = True
2816
3076
                try:
2817
3077
                    tt.final_name(trans_id)
2820
3080
                        file_id = tt.final_file_id(trans_id)
2821
3081
                        if file_id is None:
2822
3082
                            file_id = tt.inactive_file_id(trans_id)
2823
 
                        entry = path_tree.inventory[file_id]
 
3083
                        _, entry = path_tree.iter_entries_by_dir(
 
3084
                            [file_id]).next()
2824
3085
                        # special-case the other tree root (move its
2825
3086
                        # children to current root)
2826
3087
                        if entry.parent_id is None:
2842
3103
            file_id = tt.inactive_file_id(conflict[1])
2843
3104
            # special-case the other tree root (move its children instead)
2844
3105
            if path_tree and file_id in path_tree:
2845
 
                if path_tree.inventory[file_id].parent_id is None:
 
3106
                if path_tree.path2id('') == file_id:
 
3107
                    # This is the root entry, skip it
2846
3108
                    continue
2847
3109
            tt.version_file(file_id, conflict[1])
2848
3110
            new_conflicts.add((c_type, 'Versioned directory', conflict[1]))
2900
3162
    def rename(self, from_, to):
2901
3163
        """Rename a file from one path to another."""
2902
3164
        try:
2903
 
            osutils.rename(from_, to)
 
3165
            os.rename(from_, to)
2904
3166
        except OSError, e:
2905
3167
            if e.errno in (errno.EEXIST, errno.ENOTEMPTY):
2906
3168
                raise errors.FileExists(to, str(e))
2907
 
            raise
 
3169
            # normal OSError doesn't include filenames so it's hard to see where
 
3170
            # the problem is, see https://bugs.launchpad.net/bzr/+bug/491763
 
3171
            raise errors.TransformRenameFailed(from_, to, str(e), e.errno)
2908
3172
        self.past_renames.append((from_, to))
2909
3173
 
2910
3174
    def pre_delete(self, from_, to):
2920
3184
    def rollback(self):
2921
3185
        """Reverse all renames that have been performed"""
2922
3186
        for from_, to in reversed(self.past_renames):
2923
 
            osutils.rename(to, from_)
 
3187
            try:
 
3188
                os.rename(to, from_)
 
3189
            except OSError, e:
 
3190
                raise errors.TransformRenameFailed(to, from_, str(e), e.errno)
2924
3191
        # after rollback, don't reuse _FileMover
2925
3192
        past_renames = None
2926
3193
        pending_deletions = None