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  • Committer: Jelmer Vernooij
  • Date: 2017-07-23 22:06:41 UTC
  • mfrom: (6738 trunk)
  • mto: This revision was merged to the branch mainline in revision 6739.
  • Revision ID: jelmer@jelmer.uk-20170723220641-69eczax9bmv8d6kk
Merge trunk, address review comments.

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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
14
14
# along with this program; if not, write to the Free Software
15
15
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
16
16
 
 
17
from __future__ import absolute_import
 
18
 
17
19
import os
18
20
import errno
19
21
from stat import S_ISREG, S_IEXEC
20
22
import time
21
23
 
22
 
from bzrlib.lazy_import import lazy_import
23
 
lazy_import(globals(), """
24
 
from bzrlib import (
 
24
from . import (
 
25
    config as _mod_config,
 
26
    errors,
 
27
    lazy_import,
 
28
    registry,
 
29
    trace,
 
30
    tree,
 
31
    )
 
32
lazy_import.lazy_import(globals(), """
 
33
from breezy import (
25
34
    annotate,
26
35
    bencode,
27
 
    bzrdir,
 
36
    controldir,
28
37
    commit,
 
38
    conflicts,
29
39
    delta,
30
 
    errors,
31
 
    inventory,
32
40
    multiparent,
33
41
    osutils,
34
42
    revision as _mod_revision,
35
43
    ui,
36
 
    )
 
44
    urlutils,
 
45
    )
 
46
from breezy.bzr import (
 
47
    inventory,
 
48
    inventorytree,
 
49
    )
 
50
from breezy.i18n import gettext
37
51
""")
38
 
from bzrlib.errors import (DuplicateKey, MalformedTransform, NoSuchFile,
39
 
                           ReusingTransform, CantMoveRoot,
40
 
                           ExistingLimbo, ImmortalLimbo, NoFinalPath,
41
 
                           UnableCreateSymlink)
42
 
from bzrlib.filters import filtered_output_bytes, ContentFilterContext
43
 
from bzrlib.inventory import InventoryEntry
44
 
from bzrlib.osutils import (
 
52
from .errors import (DuplicateKey, MalformedTransform,
 
53
                     ReusingTransform, CantMoveRoot,
 
54
                     ImmortalLimbo, NoFinalPath,
 
55
                     UnableCreateSymlink)
 
56
from .filters import filtered_output_bytes, ContentFilterContext
 
57
from .mutabletree import MutableTree
 
58
from .osutils import (
45
59
    delete_any,
46
60
    file_kind,
47
61
    has_symlinks,
48
 
    lexists,
49
62
    pathjoin,
50
63
    sha_file,
51
64
    splitpath,
52
 
    supports_executable,
53
 
)
54
 
from bzrlib.progress import ProgressPhase
55
 
from bzrlib.symbol_versioning import (
56
 
        deprecated_function,
57
 
        deprecated_in,
58
 
        )
59
 
from bzrlib.trace import mutter, warning
60
 
from bzrlib import tree
61
 
import bzrlib.ui
62
 
import bzrlib.urlutils as urlutils
 
65
    )
 
66
from .progress import ProgressPhase
 
67
from .sixish import (
 
68
    viewitems,
 
69
    viewvalues,
 
70
    )
63
71
 
64
72
 
65
73
ROOT_PARENT = "root-parent"
66
74
 
67
 
 
68
75
def unique_add(map, key, value):
69
76
    if key in map:
70
77
        raise DuplicateKey(key=key)
71
78
    map[key] = value
72
79
 
73
80
 
 
81
 
74
82
class _TransformResults(object):
75
83
    def __init__(self, modified_paths, rename_count):
76
84
        object.__init__(self)
100
108
        self._new_parent = {}
101
109
        # mapping of trans_id with new contents -> new file_kind
102
110
        self._new_contents = {}
 
111
        # mapping of trans_id => (sha1 of content, stat_value)
 
112
        self._observed_sha1s = {}
103
113
        # Set of trans_ids whose contents will be removed
104
114
        self._removed_contents = set()
105
115
        # Mapping of trans_id -> new execute-bit value
124
134
            self._new_root = self.trans_id_tree_file_id(root_id)
125
135
        else:
126
136
            self._new_root = None
127
 
        # Indictor of whether the transform has been applied
 
137
        # Indicator of whether the transform has been applied
128
138
        self._done = False
129
139
        # A progress bar
130
140
        self._pb = pb
133
143
        # A counter of how many files have been renamed
134
144
        self.rename_count = 0
135
145
 
 
146
    def __enter__(self):
 
147
        """Support Context Manager API."""
 
148
        return self
 
149
 
 
150
    def __exit__(self, exc_type, exc_val, exc_tb):
 
151
        """Support Context Manager API."""
 
152
        self.finalize()
 
153
 
136
154
    def finalize(self):
137
155
        """Release the working tree lock, if held.
138
156
 
141
159
        """
142
160
        if self._tree is None:
143
161
            return
 
162
        for hook in MutableTree.hooks['post_transform']:
 
163
            hook(self._tree, self)
144
164
        self._tree.unlock()
145
165
        self._tree = None
146
166
 
213
233
        This means that the old root trans-id becomes obsolete, so it is
214
234
        recommended only to invoke this after the root trans-id has become
215
235
        irrelevant.
 
236
 
216
237
        """
217
 
        new_roots = [k for k, v in self._new_parent.iteritems() if v is
218
 
                     ROOT_PARENT]
 
238
        new_roots = [k for k, v in viewitems(self._new_parent)
 
239
                     if v == ROOT_PARENT]
219
240
        if len(new_roots) < 1:
220
241
            return
221
242
        if len(new_roots) != 1:
224
245
            self._new_root = new_roots[0]
225
246
            return
226
247
        old_new_root = new_roots[0]
227
 
        # TODO: What to do if a old_new_root is present, but self._new_root is
228
 
        #       not listed as being removed? This code explicitly unversions
229
 
        #       the old root and versions it with the new file_id. Though that
230
 
        #       seems like an incomplete delta
231
 
 
232
248
        # unversion the new root's directory.
233
 
        file_id = self.final_file_id(old_new_root)
 
249
        if self.final_kind(self._new_root) is None:
 
250
            file_id = self.final_file_id(old_new_root)
 
251
        else:
 
252
            file_id = self.final_file_id(self._new_root)
234
253
        if old_new_root in self._new_id:
235
254
            self.cancel_versioning(old_new_root)
236
255
        else:
240
259
        if (self.tree_file_id(self._new_root) is not None and
241
260
            self._new_root not in self._removed_id):
242
261
            self.unversion_file(self._new_root)
243
 
        self.version_file(file_id, self._new_root)
 
262
        if file_id is not None:
 
263
            self.version_file(file_id, self._new_root)
244
264
 
245
265
        # Now move children of new root into old root directory.
246
266
        # Ensure all children are registered with the transaction, but don't
287
307
            return self._r_new_id[file_id]
288
308
        else:
289
309
            try:
290
 
                self._tree.iter_entries_by_dir([file_id]).next()
 
310
                next(self._tree.iter_entries_by_dir([file_id]))
291
311
            except StopIteration:
292
312
                if file_id in self._non_present_ids:
293
313
                    return self._non_present_ids[file_id]
315
335
 
316
336
    def delete_contents(self, trans_id):
317
337
        """Schedule the contents of a path entry for deletion"""
318
 
        # Ensure that the object exists in the WorkingTree, this will raise an
319
 
        # exception if there is a problem
320
 
        self.tree_kind(trans_id)
321
 
        self._removed_contents.add(trans_id)
 
338
        kind = self.tree_kind(trans_id)
 
339
        if kind is not None:
 
340
            self._removed_contents.add(trans_id)
322
341
 
323
342
    def cancel_deletion(self, trans_id):
324
343
        """Cancel a scheduled deletion"""
381
400
        return sorted(FinalPaths(self).get_paths(new_ids))
382
401
 
383
402
    def _inventory_altered(self):
384
 
        """Get the trans_ids and paths of files needing new inv entries."""
385
 
        new_ids = set()
386
 
        for id_set in [self._new_name, self._new_parent, self._new_id,
 
403
        """Determine which trans_ids need new Inventory entries.
 
404
 
 
405
        An new entry is needed when anything that would be reflected by an
 
406
        inventory entry changes, including file name, file_id, parent file_id,
 
407
        file kind, and the execute bit.
 
408
 
 
409
        Some care is taken to return entries with real changes, not cases
 
410
        where the value is deleted and then restored to its original value,
 
411
        but some actually unchanged values may be returned.
 
412
 
 
413
        :returns: A list of (path, trans_id) for all items requiring an
 
414
            inventory change. Ordered by path.
 
415
        """
 
416
        changed_ids = set()
 
417
        # Find entries whose file_ids are new (or changed).
 
418
        new_file_id = set(t for t in self._new_id
 
419
                          if self._new_id[t] != self.tree_file_id(t))
 
420
        for id_set in [self._new_name, self._new_parent, new_file_id,
387
421
                       self._new_executability]:
388
 
            new_ids.update(id_set)
 
422
            changed_ids.update(id_set)
 
423
        # removing implies a kind change
389
424
        changed_kind = set(self._removed_contents)
 
425
        # so does adding
390
426
        changed_kind.intersection_update(self._new_contents)
391
 
        changed_kind.difference_update(new_ids)
392
 
        changed_kind = (t for t in changed_kind if self.tree_kind(t) !=
393
 
                        self.final_kind(t))
394
 
        new_ids.update(changed_kind)
395
 
        return sorted(FinalPaths(self).get_paths(new_ids))
 
427
        # Ignore entries that are already known to have changed.
 
428
        changed_kind.difference_update(changed_ids)
 
429
        #  to keep only the truly changed ones
 
430
        changed_kind = (t for t in changed_kind
 
431
                        if self.tree_kind(t) != self.final_kind(t))
 
432
        # all kind changes will alter the inventory
 
433
        changed_ids.update(changed_kind)
 
434
        # To find entries with changed parent_ids, find parents which existed,
 
435
        # but changed file_id.
 
436
        changed_file_id = set(t for t in new_file_id if t in self._removed_id)
 
437
        # Now add all their children to the set.
 
438
        for parent_trans_id in new_file_id:
 
439
            changed_ids.update(self.iter_tree_children(parent_trans_id))
 
440
        return sorted(FinalPaths(self).get_paths(changed_ids))
396
441
 
397
442
    def final_kind(self, trans_id):
398
443
        """Determine the final file kind, after any changes applied.
399
444
 
400
 
        Raises NoSuchFile if the file does not exist/has no contents.
401
 
        (It is conceivable that a path would be created without the
402
 
        corresponding contents insertion command)
 
445
        :return: None if the file does not exist/has no contents.  (It is
 
446
            conceivable that a path would be created without the corresponding
 
447
            contents insertion command)
403
448
        """
404
449
        if trans_id in self._new_contents:
405
450
            return self._new_contents[trans_id]
406
451
        elif trans_id in self._removed_contents:
407
 
            raise NoSuchFile(None)
 
452
            return None
408
453
        else:
409
454
            return self.tree_kind(trans_id)
410
455
 
441
486
        file_id = self.tree_file_id(trans_id)
442
487
        if file_id is not None:
443
488
            return file_id
444
 
        for key, value in self._non_present_ids.iteritems():
 
489
        for key, value in viewitems(self._non_present_ids):
445
490
            if value == trans_id:
446
491
                return key
447
492
 
471
516
        Only new paths and parents of tree files with assigned ids are used.
472
517
        """
473
518
        by_parent = {}
474
 
        items = list(self._new_parent.iteritems())
475
 
        items.extend((t, self.final_parent(t)) for t in
476
 
                      self._tree_id_paths.keys())
 
519
        items = list(viewitems(self._new_parent))
 
520
        items.extend((t, self.final_parent(t))
 
521
            for t in list(self._tree_id_paths))
477
522
        for trans_id, parent_id in items:
478
523
            if parent_id not in by_parent:
479
524
                by_parent[parent_id] = set()
517
562
        Active parents are those which gain children, and those which are
518
563
        removed.  This is a necessary first step in detecting conflicts.
519
564
        """
520
 
        parents = self.by_parent().keys()
 
565
        parents = list(self.by_parent())
521
566
        parents.extend([t for t in self._removed_contents if
522
567
                        self.tree_kind(t) == 'directory'])
523
568
        for trans_id in self._removed_id:
524
569
            file_id = self.tree_file_id(trans_id)
525
570
            if file_id is not None:
526
 
                if self._tree.inventory[file_id].kind == 'directory':
 
571
                if self._tree.stored_kind(file_id) == 'directory':
527
572
                    parents.append(trans_id)
528
573
            elif self.tree_kind(trans_id) == 'directory':
529
574
                parents.append(trans_id)
532
577
            # ensure that all children are registered with the transaction
533
578
            list(self.iter_tree_children(parent_id))
534
579
 
535
 
    def has_named_child(self, by_parent, parent_id, name):
536
 
        try:
537
 
            children = by_parent[parent_id]
538
 
        except KeyError:
539
 
            children = []
540
 
        for child in children:
 
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:
541
594
            if self.final_name(child) == name:
542
595
                return True
543
 
        try:
544
 
            path = self._tree_id_paths[parent_id]
545
 
        except KeyError:
 
596
        parent_path = self._tree_id_paths.get(parent_id, None)
 
597
        if parent_path is None:
 
598
            # No parent... no children
546
599
            return False
547
 
        childpath = joinpath(path, name)
548
 
        child_id = self._tree_path_ids.get(childpath)
 
600
        child_path = joinpath(parent_path, name)
 
601
        child_id = self._tree_path_ids.get(child_path, None)
549
602
        if child_id is None:
550
 
            return lexists(self._tree.abspath(childpath))
 
603
            # Not known by the tree transform yet, check the filesystem
 
604
            return osutils.lexists(self._tree.abspath(child_path))
551
605
        else:
552
 
            if self.final_parent(child_id) != parent_id:
553
 
                return False
554
 
            if child_id in self._removed_contents:
555
 
                # XXX What about dangling file-ids?
556
 
                return False
557
 
            else:
558
 
                return True
 
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))
559
622
 
560
623
    def _parent_loops(self):
561
624
        """No entry should be its own ancestor"""
563
626
        for trans_id in self._new_parent:
564
627
            seen = set()
565
628
            parent_id = trans_id
566
 
            while parent_id is not ROOT_PARENT:
 
629
            while parent_id != ROOT_PARENT:
567
630
                seen.add(parent_id)
568
631
                try:
569
632
                    parent_id = self.final_parent(parent_id)
578
641
    def _unversioned_parents(self, by_parent):
579
642
        """If parent directories are versioned, children must be versioned."""
580
643
        conflicts = []
581
 
        for parent_id, children in by_parent.iteritems():
582
 
            if parent_id is ROOT_PARENT:
 
644
        for parent_id, children in viewitems(by_parent):
 
645
            if parent_id == ROOT_PARENT:
583
646
                continue
584
647
            if self.final_file_id(parent_id) is not None:
585
648
                continue
595
658
        However, existing entries with no contents are okay.
596
659
        """
597
660
        conflicts = []
598
 
        for trans_id in self._new_id.iterkeys():
599
 
            try:
600
 
                kind = self.final_kind(trans_id)
601
 
            except NoSuchFile:
 
661
        for trans_id in self._new_id:
 
662
            kind = self.final_kind(trans_id)
 
663
            if kind is None:
602
664
                conflicts.append(('versioning no contents', trans_id))
603
665
                continue
604
 
            if not InventoryEntry.versionable_kind(kind):
 
666
            if not inventory.InventoryEntry.versionable_kind(kind):
605
667
                conflicts.append(('versioning bad kind', trans_id, kind))
606
668
        return conflicts
607
669
 
618
680
            if self.final_file_id(trans_id) is None:
619
681
                conflicts.append(('unversioned executability', trans_id))
620
682
            else:
621
 
                try:
622
 
                    non_file = self.final_kind(trans_id) != "file"
623
 
                except NoSuchFile:
624
 
                    non_file = True
625
 
                if non_file is True:
 
683
                if self.final_kind(trans_id) != "file":
626
684
                    conflicts.append(('non-file executability', trans_id))
627
685
        return conflicts
628
686
 
630
688
        """Check for overwrites (not permitted on Win32)"""
631
689
        conflicts = []
632
690
        for trans_id in self._new_contents:
633
 
            try:
634
 
                self.tree_kind(trans_id)
635
 
            except NoSuchFile:
 
691
            if self.tree_kind(trans_id) is None:
636
692
                continue
637
693
            if trans_id not in self._removed_contents:
638
694
                conflicts.append(('overwrite', trans_id,
644
700
        conflicts = []
645
701
        if (self._new_name, self._new_parent) == ({}, {}):
646
702
            return conflicts
647
 
        for children in by_parent.itervalues():
648
 
            name_ids = [(self.final_name(t), t) for t in children]
649
 
            if not self._case_sensitive_target:
650
 
                name_ids = [(n.lower(), t) for n, t in name_ids]
 
703
        for children in viewvalues(by_parent):
 
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))
651
712
            name_ids.sort()
652
713
            last_name = None
653
714
            last_trans_id = None
654
715
            for name, trans_id in name_ids:
655
 
                try:
656
 
                    kind = self.final_kind(trans_id)
657
 
                except NoSuchFile:
658
 
                    kind = None
 
716
                kind = self.final_kind(trans_id)
659
717
                file_id = self.final_file_id(trans_id)
660
718
                if kind is None and file_id is None:
661
719
                    continue
673
731
                                self._removed_id))
674
732
        all_ids = self._tree.all_file_ids()
675
733
        active_tree_ids = all_ids.difference(removed_tree_ids)
676
 
        for trans_id, file_id in self._new_id.iteritems():
 
734
        for trans_id, file_id in viewitems(self._new_id):
677
735
            if file_id in active_tree_ids:
678
736
                old_trans_id = self.trans_id_tree_file_id(file_id)
679
737
                conflicts.append(('duplicate id', old_trans_id, trans_id))
680
738
        return conflicts
681
739
 
682
740
    def _parent_type_conflicts(self, by_parent):
683
 
        """parents must have directory 'contents'."""
 
741
        """Children must have a directory parent"""
684
742
        conflicts = []
685
 
        for parent_id, children in by_parent.iteritems():
686
 
            if parent_id is ROOT_PARENT:
687
 
                continue
688
 
            if not self._any_contents(children):
689
 
                continue
690
 
            for child in children:
691
 
                try:
692
 
                    self.final_kind(child)
693
 
                except NoSuchFile:
694
 
                    continue
695
 
            try:
696
 
                kind = self.final_kind(parent_id)
697
 
            except NoSuchFile:
698
 
                kind = None
 
743
        for parent_id, children in viewitems(by_parent):
 
744
            if parent_id == ROOT_PARENT:
 
745
                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:
 
752
                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)
699
756
            if kind is None:
 
757
                # The directory will be deleted
700
758
                conflicts.append(('missing parent', parent_id))
701
759
            elif kind != "directory":
 
760
                # Meh, we need a *directory* to put something in it
702
761
                conflicts.append(('non-directory parent', parent_id))
703
762
        return conflicts
704
763
 
705
 
    def _any_contents(self, trans_ids):
706
 
        """Return true if any of the trans_ids, will have contents."""
707
 
        for trans_id in trans_ids:
708
 
            try:
709
 
                kind = self.final_kind(trans_id)
710
 
            except NoSuchFile:
711
 
                continue
712
 
            return True
713
 
        return False
714
 
 
715
764
    def _set_executability(self, path, trans_id):
716
765
        """Set the executability of versioned files """
717
 
        if supports_executable():
 
766
        if self._tree._supports_executable():
718
767
            new_executability = self._new_executability[trans_id]
719
768
            abspath = self._tree.abspath(path)
720
769
            current_mode = os.stat(abspath).st_mode
721
770
            if new_executability:
722
771
                umask = os.umask(0)
723
772
                os.umask(umask)
724
 
                to_mode = current_mode | (0100 & ~umask)
 
773
                to_mode = current_mode | (0o100 & ~umask)
725
774
                # Enable x-bit for others only if they can read it.
726
 
                if current_mode & 0004:
727
 
                    to_mode |= 0001 & ~umask
728
 
                if current_mode & 0040:
729
 
                    to_mode |= 0010 & ~umask
 
775
                if current_mode & 0o004:
 
776
                    to_mode |= 0o001 & ~umask
 
777
                if current_mode & 0o040:
 
778
                    to_mode |= 0o010 & ~umask
730
779
            else:
731
 
                to_mode = current_mode & ~0111
732
 
            os.chmod(abspath, to_mode)
 
780
                to_mode = current_mode & ~0o111
 
781
            osutils.chmod_if_possible(abspath, to_mode)
733
782
 
734
783
    def _new_entry(self, name, parent_id, file_id):
735
784
        """Helper function to create a new filesystem entry."""
739
788
        return trans_id
740
789
 
741
790
    def new_file(self, name, parent_id, contents, file_id=None,
742
 
                 executable=None):
 
791
                 executable=None, sha1=None):
743
792
        """Convenience method to create files.
744
793
 
745
794
        name is the name of the file to create.
752
801
        trans_id = self._new_entry(name, parent_id, file_id)
753
802
        # TODO: rather than scheduling a set_executable call,
754
803
        # have create_file create the file with the right mode.
755
 
        self.create_file(contents, trans_id)
 
804
        self.create_file(contents, trans_id, sha1=sha1)
756
805
        if executable is not None:
757
806
            self.set_executability(executable, trans_id)
758
807
        return trans_id
781
830
        self.create_symlink(target, trans_id)
782
831
        return trans_id
783
832
 
 
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
 
784
875
    def _affected_ids(self):
785
876
        """Return the set of transform ids affected by the transform"""
786
877
        trans_ids = set(self._removed_id)
787
 
        trans_ids.update(self._new_id.keys())
 
878
        trans_ids.update(self._new_id)
788
879
        trans_ids.update(self._removed_contents)
789
 
        trans_ids.update(self._new_contents.keys())
790
 
        trans_ids.update(self._new_executability.keys())
791
 
        trans_ids.update(self._new_name.keys())
792
 
        trans_ids.update(self._new_parent.keys())
 
880
        trans_ids.update(self._new_contents)
 
881
        trans_ids.update(self._new_executability)
 
882
        trans_ids.update(self._new_name)
 
883
        trans_ids.update(self._new_parent)
793
884
        return trans_ids
794
885
 
795
886
    def _get_file_id_maps(self):
845
936
        Return a (name, parent, kind, executable) tuple
846
937
        """
847
938
        to_name = self.final_name(to_trans_id)
848
 
        try:
849
 
            to_kind = self.final_kind(to_trans_id)
850
 
        except NoSuchFile:
851
 
            to_kind = None
 
939
        to_kind = self.final_kind(to_trans_id)
852
940
        to_parent = self.final_file_id(self.final_parent(to_trans_id))
853
941
        if to_trans_id in self._new_executability:
854
942
            to_executable = self._new_executability[to_trans_id]
872
960
        from_trans_ids, to_trans_ids = self._get_file_id_maps()
873
961
        results = []
874
962
        # Now iterate through all active file_ids
875
 
        for file_id in set(from_trans_ids.keys() + to_trans_ids.keys()):
 
963
        for file_id in set(from_trans_ids).union(to_trans_ids):
876
964
            modified = False
877
965
            from_trans_id = from_trans_ids.get(file_id)
878
966
            # find file ids, and determine versioning state
1015
1103
        :param serializer: A Serialiser like pack.ContainerSerializer.
1016
1104
        """
1017
1105
        new_name = dict((k, v.encode('utf-8')) for k, v in
1018
 
                        self._new_name.items())
 
1106
                        viewitems(self._new_name))
1019
1107
        new_executability = dict((k, int(v)) for k, v in
1020
 
                                 self._new_executability.items())
 
1108
                                 viewitems(self._new_executability))
1021
1109
        tree_path_ids = dict((k.encode('utf-8'), v)
1022
 
                             for k, v in self._tree_path_ids.items())
 
1110
                             for k, v in viewitems(self._tree_path_ids))
1023
1111
        attribs = {
1024
1112
            '_id_number': self._id_number,
1025
1113
            '_new_name': new_name,
1033
1121
            }
1034
1122
        yield serializer.bytes_record(bencode.bencode(attribs),
1035
1123
                                      (('attribs',),))
1036
 
        for trans_id, kind in self._new_contents.items():
 
1124
        for trans_id, kind in viewitems(self._new_contents):
1037
1125
            if kind == 'file':
1038
1126
                lines = osutils.chunks_to_lines(
1039
1127
                    self._read_file_chunks(trans_id))
1052
1140
        :param records: An iterable of (names, content) tuples, as per
1053
1141
            pack.ContainerPushParser.
1054
1142
        """
1055
 
        names, content = records.next()
 
1143
        names, content = next(records)
1056
1144
        attribs = bencode.bdecode(content)
1057
1145
        self._id_number = attribs['_id_number']
1058
1146
        self._new_name = dict((k, v.decode('utf-8'))
1059
 
                            for k, v in attribs['_new_name'].items())
 
1147
                              for k, v in viewitems(attribs['_new_name']))
1060
1148
        self._new_parent = attribs['_new_parent']
1061
 
        self._new_executability = dict((k, bool(v)) for k, v in
1062
 
            attribs['_new_executability'].items())
 
1149
        self._new_executability = dict((k, bool(v))
 
1150
            for k, v in viewitems(attribs['_new_executability']))
1063
1151
        self._new_id = attribs['_new_id']
1064
 
        self._r_new_id = dict((v, k) for k, v in self._new_id.items())
 
1152
        self._r_new_id = dict((v, k) for k, v in viewitems(self._new_id))
1065
1153
        self._tree_path_ids = {}
1066
1154
        self._tree_id_paths = {}
1067
 
        for bytepath, trans_id in attribs['_tree_path_ids'].items():
 
1155
        for bytepath, trans_id in viewitems(attribs['_tree_path_ids']):
1068
1156
            path = bytepath.decode('utf-8')
1069
1157
            self._tree_path_ids[path] = trans_id
1070
1158
            self._tree_id_paths[trans_id] = path
1101
1189
        self._deletiondir = None
1102
1190
        # A mapping of transform ids to their limbo filename
1103
1191
        self._limbo_files = {}
 
1192
        self._possibly_stale_limbo_files = set()
1104
1193
        # A mapping of transform ids to a set of the transform ids of children
1105
1194
        # that their limbo directory has
1106
1195
        self._limbo_children = {}
1119
1208
        if self._tree is None:
1120
1209
            return
1121
1210
        try:
1122
 
            entries = [(self._limbo_name(t), t, k) for t, k in
1123
 
                       self._new_contents.iteritems()]
1124
 
            entries.sort(reverse=True)
1125
 
            for path, trans_id, kind in entries:
1126
 
                delete_any(path)
 
1211
            limbo_paths = list(viewvalues(self._limbo_files))
 
1212
            limbo_paths.extend(self._possibly_stale_limbo_files)
 
1213
            limbo_paths.sort(reverse=True)
 
1214
            for path in limbo_paths:
 
1215
                try:
 
1216
                    delete_any(path)
 
1217
                except OSError as 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?
1127
1223
            try:
1128
1224
                delete_any(self._limbodir)
1129
1225
            except OSError:
1137
1233
        finally:
1138
1234
            TreeTransformBase.finalize(self)
1139
1235
 
 
1236
    def _limbo_supports_executable(self):
 
1237
        """Check if the limbo path supports the executable bit."""
 
1238
        # FIXME: Check actual file system capabilities of limbodir
 
1239
        return osutils.supports_executable()
 
1240
 
1140
1241
    def _limbo_name(self, trans_id):
1141
1242
        """Generate the limbo name of a file"""
1142
1243
        limbo_name = self._limbo_files.get(trans_id)
1178
1279
        entries from _limbo_files, because they are now stale.
1179
1280
        """
1180
1281
        for trans_id in trans_ids:
1181
 
            old_path = self._limbo_files.pop(trans_id)
 
1282
            old_path = self._limbo_files[trans_id]
 
1283
            self._possibly_stale_limbo_files.add(old_path)
 
1284
            del self._limbo_files[trans_id]
1182
1285
            if trans_id not in self._new_contents:
1183
1286
                continue
1184
1287
            new_path = self._limbo_name(trans_id)
1185
 
            osutils.rename(old_path, new_path)
 
1288
            os.rename(old_path, new_path)
 
1289
            self._possibly_stale_limbo_files.remove(old_path)
1186
1290
            for descendant in self._limbo_descendants(trans_id):
1187
1291
                desc_path = self._limbo_files[descendant]
1188
1292
                desc_path = new_path + desc_path[len(old_path):]
1195
1299
            descendants.update(self._limbo_descendants(descendant))
1196
1300
        return descendants
1197
1301
 
1198
 
    def create_file(self, contents, trans_id, mode_id=None):
 
1302
    def create_file(self, contents, trans_id, mode_id=None, sha1=None):
1199
1303
        """Schedule creation of a new file.
1200
1304
 
1201
 
        See also new_file.
1202
 
 
1203
 
        Contents is an iterator of strings, all of which will be written
1204
 
        to the target destination.
1205
 
 
1206
 
        New file takes the permissions of any existing file with that id,
1207
 
        unless mode_id is specified.
 
1305
        :seealso: new_file.
 
1306
 
 
1307
        :param contents: an iterator of strings, all of which will be written
 
1308
            to the target destination.
 
1309
        :param trans_id: TreeTransform handle
 
1310
        :param mode_id: If not None, force the mode of the target file to match
 
1311
            the mode of the object referenced by mode_id.
 
1312
            Otherwise, we will try to preserve mode bits of an existing file.
 
1313
        :param sha1: If the sha1 of this content is already known, pass it in.
 
1314
            We can use it to prevent future sha1 computations.
1208
1315
        """
1209
1316
        name = self._limbo_name(trans_id)
1210
1317
        f = open(name, 'wb')
1211
1318
        try:
1212
 
            try:
1213
 
                unique_add(self._new_contents, trans_id, 'file')
1214
 
            except:
1215
 
                # Clean up the file, it never got registered so
1216
 
                # TreeTransform.finalize() won't clean it up.
1217
 
                f.close()
1218
 
                os.unlink(name)
1219
 
                raise
1220
 
 
 
1319
            unique_add(self._new_contents, trans_id, 'file')
1221
1320
            f.writelines(contents)
1222
1321
        finally:
1223
1322
            f.close()
1224
1323
        self._set_mtime(name)
1225
1324
        self._set_mode(trans_id, mode_id, S_ISREG)
 
1325
        # It is unfortunate we have to use lstat instead of fstat, but we just
 
1326
        # used utime and chmod on the file, so we need the accurate final
 
1327
        # details.
 
1328
        if sha1 is not None:
 
1329
            self._observed_sha1s[trans_id] = (sha1, osutils.lstat(name))
1226
1330
 
1227
1331
    def _read_file_chunks(self, trans_id):
1228
1332
        cur_file = open(self._limbo_name(trans_id), 'rb')
1248
1352
        name = self._limbo_name(trans_id)
1249
1353
        try:
1250
1354
            os.link(path, name)
1251
 
        except OSError, e:
 
1355
        except OSError as e:
1252
1356
            if e.errno != errno.EPERM:
1253
1357
                raise
1254
1358
            raise errors.HardLinkNotSupported(path)
1287
1391
    def cancel_creation(self, trans_id):
1288
1392
        """Cancel the creation of new file contents."""
1289
1393
        del self._new_contents[trans_id]
 
1394
        if trans_id in self._observed_sha1s:
 
1395
            del self._observed_sha1s[trans_id]
1290
1396
        children = self._limbo_children.get(trans_id)
1291
1397
        # if this is a limbo directory with children, move them before removing
1292
1398
        # the directory
1296
1402
            del self._limbo_children_names[trans_id]
1297
1403
        delete_any(self._limbo_name(trans_id))
1298
1404
 
 
1405
    def new_orphan(self, trans_id, parent_id):
 
1406
        conf = self._tree.get_config_stack()
 
1407
        handle_orphan = conf.get('bzr.transform.orphan_policy')
 
1408
        handle_orphan(self, trans_id, parent_id)
 
1409
 
 
1410
 
 
1411
class OrphaningError(errors.BzrError):
 
1412
 
 
1413
    # Only bugs could lead to such exception being seen by the user
 
1414
    internal_error = True
 
1415
    _fmt = "Error while orphaning %s in %s directory"
 
1416
 
 
1417
    def __init__(self, orphan, parent):
 
1418
        errors.BzrError.__init__(self)
 
1419
        self.orphan = orphan
 
1420
        self.parent = parent
 
1421
 
 
1422
 
 
1423
class OrphaningForbidden(OrphaningError):
 
1424
 
 
1425
    _fmt = "Policy: %s doesn't allow creating orphans."
 
1426
 
 
1427
    def __init__(self, policy):
 
1428
        errors.BzrError.__init__(self)
 
1429
        self.policy = policy
 
1430
 
 
1431
 
 
1432
def move_orphan(tt, orphan_id, parent_id):
 
1433
    """See TreeTransformBase.new_orphan.
 
1434
 
 
1435
    This creates a new orphan in the `brz-orphans` dir at the root of the
 
1436
    `TreeTransform`.
 
1437
 
 
1438
    :param tt: The TreeTransform orphaning `trans_id`.
 
1439
 
 
1440
    :param orphan_id: The trans id that should be orphaned.
 
1441
 
 
1442
    :param parent_id: The orphan parent trans id.
 
1443
    """
 
1444
    # Add the orphan dir if it doesn't exist
 
1445
    orphan_dir_basename = 'brz-orphans'
 
1446
    od_id = tt.trans_id_tree_path(orphan_dir_basename)
 
1447
    if tt.final_kind(od_id) is None:
 
1448
        tt.create_directory(od_id)
 
1449
    parent_path = tt._tree_id_paths[parent_id]
 
1450
    # Find a name that doesn't exist yet in the orphan dir
 
1451
    actual_name = tt.final_name(orphan_id)
 
1452
    new_name = tt._available_backup_name(actual_name, od_id)
 
1453
    tt.adjust_path(new_name, od_id, orphan_id)
 
1454
    trace.warning('%s has been orphaned in %s'
 
1455
                  % (joinpath(parent_path, actual_name), orphan_dir_basename))
 
1456
 
 
1457
 
 
1458
def refuse_orphan(tt, orphan_id, parent_id):
 
1459
    """See TreeTransformBase.new_orphan.
 
1460
 
 
1461
    This refuses to create orphan, letting the caller handle the conflict.
 
1462
    """
 
1463
    raise OrphaningForbidden('never')
 
1464
 
 
1465
 
 
1466
orphaning_registry = registry.Registry()
 
1467
orphaning_registry.register(
 
1468
    'conflict', refuse_orphan,
 
1469
    'Leave orphans in place and create a conflict on the directory.')
 
1470
orphaning_registry.register(
 
1471
    'move', move_orphan,
 
1472
    'Move orphans into the brz-orphans directory.')
 
1473
orphaning_registry._set_default_key('conflict')
 
1474
 
 
1475
 
 
1476
opt_transform_orphan = _mod_config.RegistryOption(
 
1477
    'bzr.transform.orphan_policy', orphaning_registry,
 
1478
    help='Policy for orphaned files during transform operations.',
 
1479
    invalid='warning')
 
1480
 
1299
1481
 
1300
1482
class TreeTransform(DiskTreeTransform):
1301
1483
    """Represent a tree transformation.
1373
1555
        try:
1374
1556
            limbodir = urlutils.local_path_from_url(
1375
1557
                tree._transport.abspath('limbo'))
1376
 
            try:
1377
 
                os.mkdir(limbodir)
1378
 
            except OSError, e:
1379
 
                if e.errno == errno.EEXIST:
1380
 
                    raise ExistingLimbo(limbodir)
 
1558
            osutils.ensure_empty_directory_exists(
 
1559
                limbodir,
 
1560
                errors.ExistingLimbo)
1381
1561
            deletiondir = urlutils.local_path_from_url(
1382
1562
                tree._transport.abspath('pending-deletion'))
1383
 
            try:
1384
 
                os.mkdir(deletiondir)
1385
 
            except OSError, e:
1386
 
                if e.errno == errno.EEXIST:
1387
 
                    raise errors.ExistingPendingDeletion(deletiondir)
 
1563
            osutils.ensure_empty_directory_exists(
 
1564
                deletiondir,
 
1565
                errors.ExistingPendingDeletion)
1388
1566
        except:
1389
1567
            tree.unlock()
1390
1568
            raise
1419
1597
    def tree_kind(self, trans_id):
1420
1598
        """Determine the file kind in the working tree.
1421
1599
 
1422
 
        Raises NoSuchFile if the file does not exist
 
1600
        :returns: The file kind or None if the file does not exist
1423
1601
        """
1424
1602
        path = self._tree_id_paths.get(trans_id)
1425
1603
        if path is None:
1426
 
            raise NoSuchFile(None)
 
1604
            return None
1427
1605
        try:
1428
1606
            return file_kind(self._tree.abspath(path))
1429
 
        except OSError, e:
1430
 
            if e.errno != errno.ENOENT:
1431
 
                raise
1432
 
            else:
1433
 
                raise NoSuchFile(path)
 
1607
        except errors.NoSuchFile:
 
1608
            return None
1434
1609
 
1435
1610
    def _set_mode(self, trans_id, mode_id, typefunc):
1436
1611
        """Set the mode of new file contents.
1446
1621
            return
1447
1622
        try:
1448
1623
            mode = os.stat(self._tree.abspath(old_path)).st_mode
1449
 
        except OSError, e:
 
1624
        except OSError as e:
1450
1625
            if e.errno in (errno.ENOENT, errno.ENOTDIR):
1451
1626
                # Either old_path doesn't exist, or the parent of the
1452
1627
                # target is not a directory (but will be one eventually)
1456
1631
            else:
1457
1632
                raise
1458
1633
        if typefunc(mode):
1459
 
            os.chmod(self._limbo_name(trans_id), mode)
 
1634
            osutils.chmod_if_possible(self._limbo_name(trans_id), mode)
1460
1635
 
1461
1636
    def iter_tree_children(self, parent_id):
1462
1637
        """Iterate through the entry's tree children, if any"""
1466
1641
            return
1467
1642
        try:
1468
1643
            children = os.listdir(self._tree.abspath(path))
1469
 
        except OSError, e:
 
1644
        except OSError as e:
1470
1645
            if not (osutils._is_error_enotdir(e)
1471
1646
                    or e.errno in (errno.ENOENT, errno.ESRCH)):
1472
1647
                raise
1508
1683
                        in (trans_id, None)):
1509
1684
                        use_direct_path = True
1510
1685
                else:
1511
 
                    for l_filename, l_trans_id in\
1512
 
                        self._limbo_children_names[parent].iteritems():
 
1686
                    for l_filename, l_trans_id in viewitems(
 
1687
                            self._limbo_children_names[parent]):
1513
1688
                        if l_trans_id == trans_id:
1514
1689
                            continue
1515
1690
                        if l_filename.lower() == filename.lower():
1540
1715
            calculating one.
1541
1716
        :param _mover: Supply an alternate FileMover, for testing
1542
1717
        """
 
1718
        for hook in MutableTree.hooks['pre_transform']:
 
1719
            hook(self._tree, self)
1543
1720
        if not no_conflicts:
1544
1721
            self._check_malformed()
1545
 
        child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
 
1722
        child_pb = ui.ui_factory.nested_progress_bar()
1546
1723
        try:
1547
1724
            if precomputed_delta is None:
1548
 
                child_pb.update('Apply phase', 0, 2)
 
1725
                child_pb.update(gettext('Apply phase'), 0, 2)
1549
1726
                inventory_delta = self._generate_inventory_delta()
1550
1727
                offset = 1
1551
1728
            else:
1556
1733
            else:
1557
1734
                mover = _mover
1558
1735
            try:
1559
 
                child_pb.update('Apply phase', 0 + offset, 2 + offset)
 
1736
                child_pb.update(gettext('Apply phase'), 0 + offset, 2 + offset)
1560
1737
                self._apply_removals(mover)
1561
 
                child_pb.update('Apply phase', 1 + offset, 2 + offset)
 
1738
                child_pb.update(gettext('Apply phase'), 1 + offset, 2 + offset)
1562
1739
                modified_paths = self._apply_insertions(mover)
1563
1740
            except:
1564
1741
                mover.rollback()
1567
1744
                mover.apply_deletions()
1568
1745
        finally:
1569
1746
            child_pb.finished()
 
1747
        if self.final_file_id(self.root) is None:
 
1748
            inventory_delta = [e for e in inventory_delta if e[0] != '']
1570
1749
        self._tree.apply_inventory_delta(inventory_delta)
 
1750
        self._apply_observed_sha1s()
1571
1751
        self._done = True
1572
1752
        self.finalize()
1573
1753
        return _TransformResults(modified_paths, self.rename_count)
1575
1755
    def _generate_inventory_delta(self):
1576
1756
        """Generate an inventory delta for the current transform."""
1577
1757
        inventory_delta = []
1578
 
        child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
 
1758
        child_pb = ui.ui_factory.nested_progress_bar()
1579
1759
        new_paths = self._inventory_altered()
1580
1760
        total_entries = len(new_paths) + len(self._removed_id)
1581
1761
        try:
1582
1762
            for num, trans_id in enumerate(self._removed_id):
1583
1763
                if (num % 10) == 0:
1584
 
                    child_pb.update('removing file', num, total_entries)
 
1764
                    child_pb.update(gettext('removing file'), num, total_entries)
1585
1765
                if trans_id == self._new_root:
1586
1766
                    file_id = self._tree.get_root_id()
1587
1767
                else:
1594
1774
            new_path_file_ids = dict((t, self.final_file_id(t)) for p, t in
1595
1775
                                     new_paths)
1596
1776
            entries = self._tree.iter_entries_by_dir(
1597
 
                new_path_file_ids.values())
 
1777
                viewvalues(new_path_file_ids))
1598
1778
            old_paths = dict((e.file_id, p) for p, e in entries)
1599
1779
            final_kinds = {}
1600
1780
            for num, (path, trans_id) in enumerate(new_paths):
1601
1781
                if (num % 10) == 0:
1602
 
                    child_pb.update('adding file',
 
1782
                    child_pb.update(gettext('adding file'),
1603
1783
                                    num + len(self._removed_id), total_entries)
1604
1784
                file_id = new_path_file_ids[trans_id]
1605
1785
                if file_id is None:
1606
1786
                    continue
1607
1787
                needs_entry = False
1608
 
                try:
1609
 
                    kind = self.final_kind(trans_id)
1610
 
                except NoSuchFile:
 
1788
                kind = self.final_kind(trans_id)
 
1789
                if kind is None:
1611
1790
                    kind = self._tree.stored_kind(file_id)
1612
1791
                parent_trans_id = self.final_parent(trans_id)
1613
1792
                parent_file_id = new_path_file_ids.get(parent_trans_id)
1642
1821
 
1643
1822
        If inventory_delta is None, no inventory delta generation is performed.
1644
1823
        """
1645
 
        tree_paths = list(self._tree_path_ids.iteritems())
1646
 
        tree_paths.sort(reverse=True)
1647
 
        child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
 
1824
        tree_paths = sorted(viewitems(self._tree_path_ids), reverse=True)
 
1825
        child_pb = ui.ui_factory.nested_progress_bar()
1648
1826
        try:
1649
 
            for num, data in enumerate(tree_paths):
1650
 
                path, trans_id = data
1651
 
                child_pb.update('removing file', num, len(tree_paths))
 
1827
            for num, (path, trans_id) in enumerate(tree_paths):
 
1828
                # do not attempt to move root into a subdirectory of itself.
 
1829
                if path == '':
 
1830
                    continue
 
1831
                child_pb.update(gettext('removing file'), num, len(tree_paths))
1652
1832
                full_path = self._tree.abspath(path)
1653
1833
                if trans_id in self._removed_contents:
1654
1834
                    delete_path = os.path.join(self._deletiondir, trans_id)
1657
1837
                      or trans_id in self._new_parent):
1658
1838
                    try:
1659
1839
                        mover.rename(full_path, self._limbo_name(trans_id))
1660
 
                    except OSError, e:
 
1840
                    except errors.TransformRenameFailed as e:
1661
1841
                        if e.errno != errno.ENOENT:
1662
1842
                            raise
1663
1843
                    else:
1679
1859
        modified_paths = []
1680
1860
        new_path_file_ids = dict((t, self.final_file_id(t)) for p, t in
1681
1861
                                 new_paths)
1682
 
        child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
 
1862
        child_pb = ui.ui_factory.nested_progress_bar()
1683
1863
        try:
1684
1864
            for num, (path, trans_id) in enumerate(new_paths):
1685
1865
                if (num % 10) == 0:
1686
 
                    child_pb.update('adding file', num, len(new_paths))
 
1866
                    child_pb.update(gettext('adding file'), num, len(new_paths))
1687
1867
                full_path = self._tree.abspath(path)
1688
1868
                if trans_id in self._needs_rename:
1689
1869
                    try:
1690
1870
                        mover.rename(self._limbo_name(trans_id), full_path)
1691
 
                    except OSError, e:
 
1871
                    except errors.TransformRenameFailed as e:
1692
1872
                        # We may be renaming a dangling inventory id
1693
1873
                        if e.errno != errno.ENOENT:
1694
1874
                            raise
1695
1875
                    else:
1696
1876
                        self.rename_count += 1
 
1877
                    # TODO: if trans_id in self._observed_sha1s, we should
 
1878
                    #       re-stat the final target, since ctime will be
 
1879
                    #       updated by the change.
1697
1880
                if (trans_id in self._new_contents or
1698
1881
                    self.path_changed(trans_id)):
1699
1882
                    if trans_id in self._new_contents:
1700
1883
                        modified_paths.append(full_path)
1701
1884
                if trans_id in self._new_executability:
1702
1885
                    self._set_executability(path, trans_id)
 
1886
                if trans_id in self._observed_sha1s:
 
1887
                    o_sha1, o_st_val = self._observed_sha1s[trans_id]
 
1888
                    st = osutils.lstat(full_path)
 
1889
                    self._observed_sha1s[trans_id] = (o_sha1, st)
1703
1890
        finally:
1704
1891
            child_pb.finished()
 
1892
        for path, trans_id in new_paths:
 
1893
            # new_paths includes stuff like workingtree conflicts. Only the
 
1894
            # stuff in new_contents actually comes from limbo.
 
1895
            if trans_id in self._limbo_files:
 
1896
                del self._limbo_files[trans_id]
1705
1897
        self._new_contents.clear()
1706
1898
        return modified_paths
1707
1899
 
 
1900
    def _apply_observed_sha1s(self):
 
1901
        """After we have finished renaming everything, update observed sha1s
 
1902
 
 
1903
        This has to be done after self._tree.apply_inventory_delta, otherwise
 
1904
        it doesn't know anything about the files we are updating. Also, we want
 
1905
        to do this as late as possible, so that most entries end up cached.
 
1906
        """
 
1907
        # TODO: this doesn't update the stat information for directories. So
 
1908
        #       the first 'bzr status' will still need to rewrite
 
1909
        #       .bzr/checkout/dirstate. However, we at least don't need to
 
1910
        #       re-read all of the files.
 
1911
        # TODO: If the operation took a while, we could do a time.sleep(3) here
 
1912
        #       to allow the clock to tick over and ensure we won't have any
 
1913
        #       problems. (we could observe start time, and finish time, and if
 
1914
        #       it is less than eg 10% overhead, add a sleep call.)
 
1915
        paths = FinalPaths(self)
 
1916
        for trans_id, observed in viewitems(self._observed_sha1s):
 
1917
            path = paths.get_path(trans_id)
 
1918
            # We could get the file_id, but dirstate prefers to use the path
 
1919
            # anyway, and it is 'cheaper' to determine.
 
1920
            # file_id = self._new_id[trans_id]
 
1921
            self._tree._observed_sha1(None, path, observed)
 
1922
 
1708
1923
 
1709
1924
class TransformPreview(DiskTreeTransform):
1710
1925
    """A TreeTransform for generating preview trees.
1725
1940
    def tree_kind(self, trans_id):
1726
1941
        path = self._tree_id_paths.get(trans_id)
1727
1942
        if path is None:
1728
 
            raise NoSuchFile(None)
1729
 
        file_id = self._tree.path2id(path)
1730
 
        return self._tree.kind(file_id)
 
1943
            return None
 
1944
        kind = self._tree.path_content_summary(path)[0]
 
1945
        if kind == 'missing':
 
1946
            kind = None
 
1947
        return kind
1731
1948
 
1732
1949
    def _set_mode(self, trans_id, mode_id, typefunc):
1733
1950
        """Set the mode of new file contents.
1753
1970
            childpath = joinpath(path, child)
1754
1971
            yield self.trans_id_tree_path(childpath)
1755
1972
 
1756
 
 
1757
 
class _PreviewTree(tree.Tree):
 
1973
    def new_orphan(self, trans_id, parent_id):
 
1974
        raise NotImplementedError(self.new_orphan)
 
1975
 
 
1976
 
 
1977
class _PreviewTree(inventorytree.InventoryTree):
1758
1978
    """Partial implementation of Tree to support show_diff_trees"""
1759
1979
 
1760
1980
    def __init__(self, transform):
1789
2009
                yield self._get_repository().revision_tree(revision_id)
1790
2010
 
1791
2011
    def _get_file_revision(self, file_id, vf, tree_revision):
1792
 
        parent_keys = [(file_id, self._file_revision(t, file_id)) for t in
 
2012
        parent_keys = [(file_id, t.get_file_revision(file_id)) for t in
1793
2013
                       self._iter_parent_trees()]
1794
2014
        vf.add_lines((file_id, tree_revision), parent_keys,
1795
 
                     self.get_file(file_id).readlines())
 
2015
                     self.get_file_lines(file_id))
1796
2016
        repo = self._get_repository()
1797
2017
        base_vf = repo.texts
1798
2018
        if base_vf not in vf.fallback_versionedfiles:
1799
2019
            vf.fallback_versionedfiles.append(base_vf)
1800
2020
        return tree_revision
1801
2021
 
1802
 
    def _stat_limbo_file(self, file_id):
1803
 
        trans_id = self._transform.trans_id_file_id(file_id)
 
2022
    def _stat_limbo_file(self, file_id=None, trans_id=None):
 
2023
        if trans_id is None:
 
2024
            trans_id = self._transform.trans_id_file_id(file_id)
1804
2025
        name = self._transform._limbo_name(trans_id)
1805
2026
        return os.lstat(name)
1806
2027
 
1831
2052
        pass
1832
2053
 
1833
2054
    @property
1834
 
    def inventory(self):
 
2055
    def root_inventory(self):
1835
2056
        """This Tree does not use inventory as its backing data."""
1836
 
        raise NotImplementedError(_PreviewTree.inventory)
 
2057
        raise NotImplementedError(_PreviewTree.root_inventory)
1837
2058
 
1838
2059
    def get_root_id(self):
1839
2060
        return self._transform.final_file_id(self._transform.root)
1842
2063
        tree_ids = set(self._transform._tree.all_file_ids())
1843
2064
        tree_ids.difference_update(self._transform.tree_file_id(t)
1844
2065
                                   for t in self._transform._removed_id)
1845
 
        tree_ids.update(self._transform._new_id.values())
 
2066
        tree_ids.update(viewvalues(self._transform._new_id))
1846
2067
        return tree_ids
1847
2068
 
1848
2069
    def __iter__(self):
1851
2072
    def _has_id(self, file_id, fallback_check):
1852
2073
        if file_id in self._transform._r_new_id:
1853
2074
            return True
1854
 
        elif file_id in set([self._transform.tree_file_id(trans_id) for
1855
 
            trans_id in self._transform._removed_id]):
 
2075
        elif file_id in {self._transform.tree_file_id(trans_id) for
 
2076
            trans_id in self._transform._removed_id}:
1856
2077
            return False
1857
2078
        else:
1858
2079
            return fallback_check(file_id)
1886
2107
        return cur_parent
1887
2108
 
1888
2109
    def path2id(self, path):
 
2110
        if isinstance(path, list):
 
2111
            if path == []:
 
2112
                path = [""]
 
2113
            path = osutils.pathjoin(*path)
1889
2114
        return self._transform.final_file_id(self._path2trans_id(path))
1890
2115
 
1891
2116
    def id2path(self, file_id):
1901
2126
            return children
1902
2127
        children = set(self._transform.iter_tree_children(trans_id))
1903
2128
        # children in the _new_parent set are provided by _by_parent.
1904
 
        children.difference_update(self._transform._new_parent.keys())
 
2129
        children.difference_update(self._transform._new_parent)
1905
2130
        children.update(self._by_parent.get(trans_id, []))
1906
2131
        self._all_children_cache[trans_id] = children
1907
2132
        return children
1929
2154
            if (specific_file_ids is not None
1930
2155
                and file_id not in specific_file_ids):
1931
2156
                continue
1932
 
            try:
1933
 
                kind = self._transform.final_kind(trans_id)
1934
 
            except NoSuchFile:
 
2157
            kind = self._transform.final_kind(trans_id)
 
2158
            if kind is None:
1935
2159
                kind = self._transform._tree.stored_kind(file_id)
1936
2160
            new_entry = inventory.make_entry(
1937
2161
                kind,
1953
2177
                ordered_ids.append((trans_id, parent_file_id))
1954
2178
        return ordered_ids
1955
2179
 
 
2180
    def iter_child_entries(self, file_id, path=None):
 
2181
        self.id2path(file_id)
 
2182
        trans_id = self._transform.trans_id_file_id(file_id)
 
2183
        todo = [(child_trans_id, trans_id) for child_trans_id in
 
2184
                self._all_children(trans_id)]
 
2185
        for entry, trans_id in self._make_inv_entries(todo):
 
2186
            yield entry
 
2187
 
1956
2188
    def iter_entries_by_dir(self, specific_file_ids=None, yield_parents=False):
1957
2189
        # This may not be a maximally efficient implementation, but it is
1958
2190
        # reasonably straightforward.  An implementation that grafts the
2022
2254
 
2023
2255
    def get_file_size(self, file_id):
2024
2256
        """See Tree.get_file_size"""
 
2257
        trans_id = self._transform.trans_id_file_id(file_id)
 
2258
        kind = self._transform.final_kind(trans_id)
 
2259
        if kind != 'file':
 
2260
            return None
 
2261
        if trans_id in self._transform._new_contents:
 
2262
            return self._stat_limbo_file(trans_id=trans_id).st_size
2025
2263
        if self.kind(file_id) == 'file':
2026
2264
            return self._transform._tree.get_file_size(file_id)
2027
2265
        else:
2028
2266
            return None
2029
2267
 
 
2268
    def get_file_verifier(self, file_id, path=None, stat_value=None):
 
2269
        trans_id = self._transform.trans_id_file_id(file_id)
 
2270
        kind = self._transform._new_contents.get(trans_id)
 
2271
        if kind is None:
 
2272
            return self._transform._tree.get_file_verifier(file_id)
 
2273
        if kind == 'file':
 
2274
            fileobj = self.get_file(file_id)
 
2275
            try:
 
2276
                return ("SHA1", sha_file(fileobj))
 
2277
            finally:
 
2278
                fileobj.close()
 
2279
 
2030
2280
    def get_file_sha1(self, file_id, path=None, stat_value=None):
2031
2281
        trans_id = self._transform.trans_id_file_id(file_id)
2032
2282
        kind = self._transform._new_contents.get(trans_id)
2048
2298
        except KeyError:
2049
2299
            try:
2050
2300
                return self._transform._tree.is_executable(file_id, path)
2051
 
            except OSError, e:
 
2301
            except OSError as e:
2052
2302
                if e.errno == errno.ENOENT:
2053
2303
                    return False
2054
2304
                raise
2055
2305
            except errors.NoSuchId:
2056
2306
                return False
2057
2307
 
 
2308
    def has_filename(self, path):
 
2309
        trans_id = self._path2trans_id(path)
 
2310
        if trans_id in self._transform._new_contents:
 
2311
            return True
 
2312
        elif trans_id in self._transform._removed_contents:
 
2313
            return False
 
2314
        else:
 
2315
            return self._transform._tree.has_filename(path)
 
2316
 
2058
2317
    def path_content_summary(self, path):
2059
2318
        trans_id = self._path2trans_id(path)
2060
2319
        tt = self._transform
2073
2332
            if kind == 'file':
2074
2333
                statval = os.lstat(limbo_name)
2075
2334
                size = statval.st_size
2076
 
                if not supports_executable():
 
2335
                if not tt._limbo_supports_executable():
2077
2336
                    executable = False
2078
2337
                else:
2079
2338
                    executable = statval.st_mode & S_IEXEC
2148
2407
                                   self.get_file(file_id).readlines(),
2149
2408
                                   default_revision)
2150
2409
 
2151
 
    def get_symlink_target(self, file_id):
 
2410
    def get_symlink_target(self, file_id, path=None):
2152
2411
        """See Tree.get_symlink_target"""
2153
2412
        if not self._content_change(file_id):
2154
2413
            return self._transform._tree.get_symlink_target(file_id)
2169
2428
                path_from_root = self._final_paths.get_path(child_id)
2170
2429
                basename = self._transform.final_name(child_id)
2171
2430
                file_id = self._transform.final_file_id(child_id)
2172
 
                try:
2173
 
                    kind = self._transform.final_kind(child_id)
 
2431
                kind  = self._transform.final_kind(child_id)
 
2432
                if kind is not None:
2174
2433
                    versioned_kind = kind
2175
 
                except NoSuchFile:
 
2434
                else:
2176
2435
                    kind = 'unknown'
2177
2436
                    versioned_kind = self._transform._tree.stored_kind(file_id)
2178
2437
                if versioned_kind == 'directory':
2291
2550
    for num, _unused in enumerate(wt.all_file_ids()):
2292
2551
        if num > 0:  # more than just a root
2293
2552
            raise errors.WorkingTreeAlreadyPopulated(base=wt.basedir)
2294
 
    existing_files = set()
2295
 
    for dir, files in wt.walkdirs():
2296
 
        existing_files.update(f[0] for f in files)
2297
2553
    file_trans_id = {}
2298
 
    top_pb = bzrlib.ui.ui_factory.nested_progress_bar()
 
2554
    top_pb = ui.ui_factory.nested_progress_bar()
2299
2555
    pp = ProgressPhase("Build phase", 2, top_pb)
2300
 
    if tree.inventory.root is not None:
 
2556
    if tree.get_root_id() is not None:
2301
2557
        # This is kind of a hack: we should be altering the root
2302
2558
        # as part of the regular tree shape diff logic.
2303
2559
        # The conditional test here is to avoid doing an
2314
2570
        pp.next_phase()
2315
2571
        file_trans_id[wt.get_root_id()] = \
2316
2572
            tt.trans_id_tree_file_id(wt.get_root_id())
2317
 
        pb = bzrlib.ui.ui_factory.nested_progress_bar()
 
2573
        pb = ui.ui_factory.nested_progress_bar()
2318
2574
        try:
2319
2575
            deferred_contents = []
2320
2576
            num = 0
2321
 
            total = len(tree.inventory)
 
2577
            total = len(tree.all_file_ids())
2322
2578
            if delta_from_tree:
2323
2579
                precomputed_delta = []
2324
2580
            else:
2325
2581
                precomputed_delta = None
 
2582
            # Check if tree inventory has content. If so, we populate
 
2583
            # existing_files with the directory content. If there are no
 
2584
            # entries we skip populating existing_files as its not used.
 
2585
            # This improves performance and unncessary work on large
 
2586
            # directory trees. (#501307)
 
2587
            if total > 0:
 
2588
                existing_files = set()
 
2589
                for dir, files in wt.walkdirs():
 
2590
                    existing_files.update(f[0] for f in files)
2326
2591
            for num, (tree_path, entry) in \
2327
 
                enumerate(tree.inventory.iter_entries_by_dir()):
2328
 
                pb.update("Building tree", num - len(deferred_contents), total)
 
2592
                enumerate(tree.iter_entries_by_dir()):
 
2593
                pb.update(gettext("Building tree"), num - len(deferred_contents), total)
2329
2594
                if entry.parent_id is None:
2330
2595
                    continue
2331
2596
                reparent = False
2337
2602
                    kind = file_kind(target_path)
2338
2603
                    if kind == "directory":
2339
2604
                        try:
2340
 
                            bzrdir.BzrDir.open(target_path)
 
2605
                            controldir.ControlDir.open(target_path)
2341
2606
                        except errors.NotBranchError:
2342
2607
                            pass
2343
2608
                        else:
2358
2623
                    executable = tree.is_executable(file_id, tree_path)
2359
2624
                    if executable:
2360
2625
                        tt.set_executability(executable, trans_id)
2361
 
                    trans_data = (trans_id, tree_path)
 
2626
                    trans_data = (trans_id, tree_path, entry.text_sha1)
2362
2627
                    deferred_contents.append((file_id, trans_data))
2363
2628
                else:
2364
2629
                    file_trans_id[file_id] = new_by_entry(tt, entry, parent_id,
2380
2645
            precomputed_delta = None
2381
2646
        conflicts = cook_conflicts(raw_conflicts, tt)
2382
2647
        for conflict in conflicts:
2383
 
            warning(conflict)
 
2648
            trace.warning(unicode(conflict))
2384
2649
        try:
2385
2650
            wt.add_conflicts(conflicts)
2386
2651
        except errors.UnsupportedOperation:
2405
2670
                     in iter if not (c or e[0] != e[1])]
2406
2671
        if accelerator_tree.supports_content_filtering():
2407
2672
            unchanged = [(f, p) for (f, p) in unchanged
2408
 
                         if not accelerator_tree.iter_search_rules([p]).next()]
 
2673
                         if not next(accelerator_tree.iter_search_rules([p]))]
2409
2674
        unchanged = dict(unchanged)
2410
2675
        new_desired_files = []
2411
2676
        count = 0
2412
 
        for file_id, (trans_id, tree_path) in desired_files:
 
2677
        for file_id, (trans_id, tree_path, text_sha1) in desired_files:
2413
2678
            accelerator_path = unchanged.get(file_id)
2414
2679
            if accelerator_path is None:
2415
 
                new_desired_files.append((file_id, (trans_id, tree_path)))
 
2680
                new_desired_files.append((file_id,
 
2681
                    (trans_id, tree_path, text_sha1)))
2416
2682
                continue
2417
 
            pb.update('Adding file contents', count + offset, total)
 
2683
            pb.update(gettext('Adding file contents'), count + offset, total)
2418
2684
            if hardlink:
2419
2685
                tt.create_hardlink(accelerator_tree.abspath(accelerator_path),
2420
2686
                                   trans_id)
2425
2691
                    contents = filtered_output_bytes(contents, filters,
2426
2692
                        ContentFilterContext(tree_path, tree))
2427
2693
                try:
2428
 
                    tt.create_file(contents, trans_id)
 
2694
                    tt.create_file(contents, trans_id, sha1=text_sha1)
2429
2695
                finally:
2430
2696
                    try:
2431
2697
                        contents.close()
2434
2700
                        pass
2435
2701
            count += 1
2436
2702
        offset += count
2437
 
    for count, ((trans_id, tree_path), contents) in enumerate(
 
2703
    for count, ((trans_id, tree_path, text_sha1), contents) in enumerate(
2438
2704
            tree.iter_files_bytes(new_desired_files)):
2439
2705
        if wt.supports_content_filtering():
2440
2706
            filters = wt._content_filter_stack(tree_path)
2441
2707
            contents = filtered_output_bytes(contents, filters,
2442
2708
                ContentFilterContext(tree_path, tree))
2443
 
        tt.create_file(contents, trans_id)
2444
 
        pb.update('Adding file contents', count + offset, total)
 
2709
        tt.create_file(contents, trans_id, sha1=text_sha1)
 
2710
        pb.update(gettext('Adding file contents'), count + offset, total)
2445
2711
 
2446
2712
 
2447
2713
def _reparent_children(tt, old_parent, new_parent):
2448
2714
    for child in tt.iter_tree_children(old_parent):
2449
2715
        tt.adjust_path(tt.final_name(child), new_parent, child)
2450
2716
 
 
2717
 
2451
2718
def _reparent_transform_children(tt, old_parent, new_parent):
2452
2719
    by_parent = tt.by_parent()
2453
2720
    for child in by_parent[old_parent]:
2454
2721
        tt.adjust_path(tt.final_name(child), new_parent, child)
2455
2722
    return by_parent[old_parent]
2456
2723
 
 
2724
 
2457
2725
def _content_match(tree, entry, file_id, kind, target_path):
2458
2726
    if entry.kind != kind:
2459
2727
        return False
2460
2728
    if entry.kind == "directory":
2461
2729
        return True
2462
2730
    if entry.kind == "file":
2463
 
        if tree.get_file(file_id).read() == file(target_path, 'rb').read():
2464
 
            return True
 
2731
        f = file(target_path, 'rb')
 
2732
        try:
 
2733
            if tree.get_file_text(file_id) == f.read():
 
2734
                return True
 
2735
        finally:
 
2736
            f.close()
2465
2737
    elif entry.kind == "symlink":
2466
2738
        if tree.get_symlink_target(file_id) == os.readlink(target_path):
2467
2739
            return True
2519
2791
        raise errors.BadFileKindError(name, kind)
2520
2792
 
2521
2793
 
2522
 
@deprecated_function(deprecated_in((1, 9, 0)))
2523
 
def create_by_entry(tt, entry, tree, trans_id, lines=None, mode_id=None):
2524
 
    """Create new file contents according to an inventory entry.
2525
 
 
2526
 
    DEPRECATED.  Use create_from_tree instead.
2527
 
    """
2528
 
    if entry.kind == "file":
2529
 
        if lines is None:
2530
 
            lines = tree.get_file(entry.file_id).readlines()
2531
 
        tt.create_file(lines, trans_id, mode_id=mode_id)
2532
 
    elif entry.kind == "symlink":
2533
 
        tt.create_symlink(tree.get_symlink_target(entry.file_id), trans_id)
2534
 
    elif entry.kind == "directory":
2535
 
        tt.create_directory(trans_id)
2536
 
 
2537
 
 
2538
2794
def create_from_tree(tt, trans_id, tree, file_id, bytes=None,
2539
2795
    filter_tree_path=None):
2540
2796
    """Create new file contents according to tree contents.
2571
2827
        tt.set_executability(entry.executable, trans_id)
2572
2828
 
2573
2829
 
2574
 
def get_backup_name(entry, by_parent, parent_trans_id, tt):
2575
 
    return _get_backup_name(entry.name, by_parent, parent_trans_id, tt)
2576
 
 
2577
 
 
2578
 
def _get_backup_name(name, by_parent, parent_trans_id, tt):
2579
 
    """Produce a backup-style name that appears to be available"""
2580
 
    def name_gen():
2581
 
        counter = 1
2582
 
        while True:
2583
 
            yield "%s.~%d~" % (name, counter)
2584
 
            counter += 1
2585
 
    for new_name in name_gen():
2586
 
        if not tt.has_named_child(by_parent, parent_trans_id, new_name):
2587
 
            return new_name
2588
 
 
2589
 
 
2590
 
def _entry_changes(file_id, entry, working_tree):
2591
 
    """Determine in which ways the inventory entry has changed.
2592
 
 
2593
 
    Returns booleans: has_contents, content_mod, meta_mod
2594
 
    has_contents means there are currently contents, but they differ
2595
 
    contents_mod means contents need to be modified
2596
 
    meta_mod means the metadata needs to be modified
2597
 
    """
2598
 
    cur_entry = working_tree.inventory[file_id]
2599
 
    try:
2600
 
        working_kind = working_tree.kind(file_id)
2601
 
        has_contents = True
2602
 
    except NoSuchFile:
2603
 
        has_contents = False
2604
 
        contents_mod = True
2605
 
        meta_mod = False
2606
 
    if has_contents is True:
2607
 
        if entry.kind != working_kind:
2608
 
            contents_mod, meta_mod = True, False
2609
 
        else:
2610
 
            cur_entry._read_tree_state(working_tree.id2path(file_id),
2611
 
                                       working_tree)
2612
 
            contents_mod, meta_mod = entry.detect_changes(cur_entry)
2613
 
            cur_entry._forget_tree_state()
2614
 
    return has_contents, contents_mod, meta_mod
2615
 
 
2616
 
 
2617
2830
def revert(working_tree, target_tree, filenames, backups=False,
2618
2831
           pb=None, change_reporter=None):
2619
2832
    """Revert a working tree's contents to those of a target tree."""
2629
2842
                unversioned_filter=working_tree.is_ignored)
2630
2843
            delta.report_changes(tt.iter_changes(), change_reporter)
2631
2844
        for conflict in conflicts:
2632
 
            warning(conflict)
 
2845
            trace.warning(unicode(conflict))
2633
2846
        pp.next_phase()
2634
2847
        tt.apply()
2635
2848
        working_tree.set_merge_modified(merge_modified)
2643
2856
def _prepare_revert_transform(working_tree, target_tree, tt, filenames,
2644
2857
                              backups, pp, basis_tree=None,
2645
2858
                              merge_modified=None):
2646
 
    child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
 
2859
    child_pb = ui.ui_factory.nested_progress_bar()
2647
2860
    try:
2648
2861
        if merge_modified is None:
2649
2862
            merge_modified = working_tree.merge_modified()
2652
2865
                                      merge_modified, basis_tree)
2653
2866
    finally:
2654
2867
        child_pb.finished()
2655
 
    child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
 
2868
    child_pb = ui.ui_factory.nested_progress_bar()
2656
2869
    try:
2657
2870
        raw_conflicts = resolve_conflicts(tt, child_pb,
2658
2871
            lambda t, c: conflict_pass(t, c, target_tree))
2666
2879
                 backups, merge_modified, basis_tree=None):
2667
2880
    if basis_tree is not None:
2668
2881
        basis_tree.lock_read()
2669
 
    change_list = target_tree.iter_changes(working_tree,
 
2882
    # We ask the working_tree for its changes relative to the target, rather
 
2883
    # than the target changes relative to the working tree. Because WT4 has an
 
2884
    # optimizer to compare itself to a target, but no optimizer for the
 
2885
    # reverse.
 
2886
    change_list = working_tree.iter_changes(target_tree,
2670
2887
        specific_files=specific_files, pb=pb)
2671
2888
    if target_tree.get_root_id() is None:
2672
2889
        skip_root = True
2676
2893
        deferred_files = []
2677
2894
        for id_num, (file_id, path, changed_content, versioned, parent, name,
2678
2895
                kind, executable) in enumerate(change_list):
2679
 
            if skip_root and file_id[0] is not None and parent[0] is None:
 
2896
            target_path, wt_path = path
 
2897
            target_versioned, wt_versioned = versioned
 
2898
            target_parent, wt_parent = parent
 
2899
            target_name, wt_name = name
 
2900
            target_kind, wt_kind = kind
 
2901
            target_executable, wt_executable = executable
 
2902
            if skip_root and wt_parent is None:
2680
2903
                continue
2681
2904
            trans_id = tt.trans_id_file_id(file_id)
2682
2905
            mode_id = None
2683
2906
            if changed_content:
2684
2907
                keep_content = False
2685
 
                if kind[0] == 'file' and (backups or kind[1] is None):
 
2908
                if wt_kind == 'file' and (backups or target_kind is None):
2686
2909
                    wt_sha1 = working_tree.get_file_sha1(file_id)
2687
2910
                    if merge_modified.get(file_id) != wt_sha1:
2688
2911
                        # acquire the basis tree lazily to prevent the
2691
2914
                        if basis_tree is None:
2692
2915
                            basis_tree = working_tree.basis_tree()
2693
2916
                            basis_tree.lock_read()
2694
 
                        if file_id in basis_tree:
 
2917
                        if basis_tree.has_id(file_id):
2695
2918
                            if wt_sha1 != basis_tree.get_file_sha1(file_id):
2696
2919
                                keep_content = True
2697
 
                        elif kind[1] is None and not versioned[1]:
 
2920
                        elif target_kind is None and not target_versioned:
2698
2921
                            keep_content = True
2699
 
                if kind[0] is not None:
 
2922
                if wt_kind is not None:
2700
2923
                    if not keep_content:
2701
2924
                        tt.delete_contents(trans_id)
2702
 
                    elif kind[1] is not None:
2703
 
                        parent_trans_id = tt.trans_id_file_id(parent[0])
2704
 
                        by_parent = tt.by_parent()
2705
 
                        backup_name = _get_backup_name(name[0], by_parent,
2706
 
                                                       parent_trans_id, tt)
 
2925
                    elif target_kind is not None:
 
2926
                        parent_trans_id = tt.trans_id_file_id(wt_parent)
 
2927
                        backup_name = tt._available_backup_name(
 
2928
                            wt_name, parent_trans_id)
2707
2929
                        tt.adjust_path(backup_name, parent_trans_id, trans_id)
2708
 
                        new_trans_id = tt.create_path(name[0], parent_trans_id)
2709
 
                        if versioned == (True, True):
 
2930
                        new_trans_id = tt.create_path(wt_name, parent_trans_id)
 
2931
                        if wt_versioned and target_versioned:
2710
2932
                            tt.unversion_file(trans_id)
2711
2933
                            tt.version_file(file_id, new_trans_id)
2712
2934
                        # New contents should have the same unix perms as old
2713
2935
                        # contents
2714
2936
                        mode_id = trans_id
2715
2937
                        trans_id = new_trans_id
2716
 
                if kind[1] in ('directory', 'tree-reference'):
 
2938
                if target_kind in ('directory', 'tree-reference'):
2717
2939
                    tt.create_directory(trans_id)
2718
 
                    if kind[1] == 'tree-reference':
 
2940
                    if target_kind == 'tree-reference':
2719
2941
                        revision = target_tree.get_reference_revision(file_id,
2720
 
                                                                      path[1])
 
2942
                                                                      target_path)
2721
2943
                        tt.set_tree_reference(revision, trans_id)
2722
 
                elif kind[1] == 'symlink':
 
2944
                elif target_kind == 'symlink':
2723
2945
                    tt.create_symlink(target_tree.get_symlink_target(file_id),
2724
2946
                                      trans_id)
2725
 
                elif kind[1] == 'file':
 
2947
                elif target_kind == 'file':
2726
2948
                    deferred_files.append((file_id, (trans_id, mode_id)))
2727
2949
                    if basis_tree is None:
2728
2950
                        basis_tree = working_tree.basis_tree()
2729
2951
                        basis_tree.lock_read()
2730
2952
                    new_sha1 = target_tree.get_file_sha1(file_id)
2731
 
                    if (file_id in basis_tree and new_sha1 ==
2732
 
                        basis_tree.get_file_sha1(file_id)):
 
2953
                    if (basis_tree.has_id(file_id) and
 
2954
                        new_sha1 == basis_tree.get_file_sha1(file_id)):
2733
2955
                        if file_id in merge_modified:
2734
2956
                            del merge_modified[file_id]
2735
2957
                    else:
2736
2958
                        merge_modified[file_id] = new_sha1
2737
2959
 
2738
2960
                    # preserve the execute bit when backing up
2739
 
                    if keep_content and executable[0] == executable[1]:
2740
 
                        tt.set_executability(executable[1], trans_id)
2741
 
                elif kind[1] is not None:
2742
 
                    raise AssertionError(kind[1])
2743
 
            if versioned == (False, True):
 
2961
                    if keep_content and wt_executable == target_executable:
 
2962
                        tt.set_executability(target_executable, trans_id)
 
2963
                elif target_kind is not None:
 
2964
                    raise AssertionError(target_kind)
 
2965
            if not wt_versioned and target_versioned:
2744
2966
                tt.version_file(file_id, trans_id)
2745
 
            if versioned == (True, False):
 
2967
            if wt_versioned and not target_versioned:
2746
2968
                tt.unversion_file(trans_id)
2747
 
            if (name[1] is not None and
2748
 
                (name[0] != name[1] or parent[0] != parent[1])):
2749
 
                if name[1] == '' and parent[1] is None:
 
2969
            if (target_name is not None and
 
2970
                (wt_name != target_name or wt_parent != target_parent)):
 
2971
                if target_name == '' and target_parent is None:
2750
2972
                    parent_trans = ROOT_PARENT
2751
2973
                else:
2752
 
                    parent_trans = tt.trans_id_file_id(parent[1])
2753
 
                if parent[0] is None and versioned[0]:
2754
 
                    tt.adjust_root_path(name[1], parent_trans)
 
2974
                    parent_trans = tt.trans_id_file_id(target_parent)
 
2975
                if wt_parent is None and wt_versioned:
 
2976
                    tt.adjust_root_path(target_name, parent_trans)
2755
2977
                else:
2756
 
                    tt.adjust_path(name[1], parent_trans, trans_id)
2757
 
            if executable[0] != executable[1] and kind[1] == "file":
2758
 
                tt.set_executability(executable[1], trans_id)
 
2978
                    tt.adjust_path(target_name, parent_trans, trans_id)
 
2979
            if wt_executable != target_executable and target_kind == "file":
 
2980
                tt.set_executability(target_executable, trans_id)
2759
2981
        if working_tree.supports_content_filtering():
2760
2982
            for index, ((trans_id, mode_id), bytes) in enumerate(
2761
2983
                target_tree.iter_files_bytes(deferred_files)):
2787
3009
    pb = ui.ui_factory.nested_progress_bar()
2788
3010
    try:
2789
3011
        for n in range(10):
2790
 
            pb.update('Resolution pass', n+1, 10)
 
3012
            pb.update(gettext('Resolution pass'), n+1, 10)
2791
3013
            conflicts = tt.find_conflicts()
2792
3014
            if len(conflicts) == 0:
2793
3015
                return new_conflicts
2817
3039
                existing_file, new_file = conflict[2], conflict[1]
2818
3040
            else:
2819
3041
                existing_file, new_file = conflict[1], conflict[2]
2820
 
            new_name = tt.final_name(existing_file)+'.moved'
 
3042
            new_name = tt.final_name(existing_file) + '.moved'
2821
3043
            tt.adjust_path(new_name, final_parent, existing_file)
2822
3044
            new_conflicts.add((c_type, 'Moved existing file to',
2823
3045
                               existing_file, new_file))
2832
3054
 
2833
3055
        elif c_type == 'missing parent':
2834
3056
            trans_id = conflict[1]
2835
 
            try:
2836
 
                tt.cancel_deletion(trans_id)
2837
 
                new_conflicts.add(('deleting parent', 'Not deleting',
2838
 
                                   trans_id))
2839
 
            except KeyError:
 
3057
            if trans_id in tt._removed_contents:
 
3058
                cancel_deletion = True
 
3059
                orphans = tt._get_potential_orphans(trans_id)
 
3060
                if orphans:
 
3061
                    cancel_deletion = False
 
3062
                    # All children are orphans
 
3063
                    for o in orphans:
 
3064
                        try:
 
3065
                            tt.new_orphan(o, trans_id)
 
3066
                        except OrphaningError:
 
3067
                            # Something bad happened so we cancel the directory
 
3068
                            # deletion which will leave it in place with a
 
3069
                            # conflict. The user can deal with it from there.
 
3070
                            # Note that this also catch the case where we don't
 
3071
                            # want to create orphans and leave the directory in
 
3072
                            # place.
 
3073
                            cancel_deletion = True
 
3074
                            break
 
3075
                if cancel_deletion:
 
3076
                    # Cancel the directory deletion
 
3077
                    tt.cancel_deletion(trans_id)
 
3078
                    new_conflicts.add(('deleting parent', 'Not deleting',
 
3079
                                       trans_id))
 
3080
            else:
2840
3081
                create = True
2841
3082
                try:
2842
3083
                    tt.final_name(trans_id)
2845
3086
                        file_id = tt.final_file_id(trans_id)
2846
3087
                        if file_id is None:
2847
3088
                            file_id = tt.inactive_file_id(trans_id)
2848
 
                        entry = path_tree.inventory[file_id]
 
3089
                        _, entry = next(path_tree.iter_entries_by_dir(
 
3090
                            [file_id]))
2849
3091
                        # special-case the other tree root (move its
2850
3092
                        # children to current root)
2851
3093
                        if entry.parent_id is None:
2866
3108
        elif c_type == 'unversioned parent':
2867
3109
            file_id = tt.inactive_file_id(conflict[1])
2868
3110
            # special-case the other tree root (move its children instead)
2869
 
            if path_tree and file_id in path_tree:
2870
 
                if path_tree.inventory[file_id].parent_id is None:
 
3111
            if path_tree and path_tree.has_id(file_id):
 
3112
                if path_tree.path2id('') == file_id:
 
3113
                    # This is the root entry, skip it
2871
3114
                    continue
2872
3115
            tt.version_file(file_id, conflict[1])
2873
3116
            new_conflicts.add((c_type, 'Versioned directory', conflict[1]))
2889
3132
 
2890
3133
def cook_conflicts(raw_conflicts, tt):
2891
3134
    """Generate a list of cooked conflicts, sorted by file path"""
2892
 
    from bzrlib.conflicts import Conflict
2893
3135
    conflict_iter = iter_cook_conflicts(raw_conflicts, tt)
2894
 
    return sorted(conflict_iter, key=Conflict.sort_key)
 
3136
    return sorted(conflict_iter, key=conflicts.Conflict.sort_key)
2895
3137
 
2896
3138
 
2897
3139
def iter_cook_conflicts(raw_conflicts, tt):
2898
 
    from bzrlib.conflicts import Conflict
2899
3140
    fp = FinalPaths(tt)
2900
3141
    for conflict in raw_conflicts:
2901
3142
        c_type = conflict[0]
2903
3144
        modified_path = fp.get_path(conflict[2])
2904
3145
        modified_id = tt.final_file_id(conflict[2])
2905
3146
        if len(conflict) == 3:
2906
 
            yield Conflict.factory(c_type, action=action, path=modified_path,
2907
 
                                     file_id=modified_id)
 
3147
            yield conflicts.Conflict.factory(
 
3148
                c_type, action=action, path=modified_path, file_id=modified_id)
2908
3149
 
2909
3150
        else:
2910
3151
            conflicting_path = fp.get_path(conflict[3])
2911
3152
            conflicting_id = tt.final_file_id(conflict[3])
2912
 
            yield Conflict.factory(c_type, action=action, path=modified_path,
2913
 
                                   file_id=modified_id,
2914
 
                                   conflict_path=conflicting_path,
2915
 
                                   conflict_file_id=conflicting_id)
 
3153
            yield conflicts.Conflict.factory(
 
3154
                c_type, action=action, path=modified_path,
 
3155
                file_id=modified_id,
 
3156
                conflict_path=conflicting_path,
 
3157
                conflict_file_id=conflicting_id)
2916
3158
 
2917
3159
 
2918
3160
class _FileMover(object):
2925
3167
    def rename(self, from_, to):
2926
3168
        """Rename a file from one path to another."""
2927
3169
        try:
2928
 
            osutils.rename(from_, to)
2929
 
        except OSError, e:
 
3170
            os.rename(from_, to)
 
3171
        except OSError as e:
2930
3172
            if e.errno in (errno.EEXIST, errno.ENOTEMPTY):
2931
3173
                raise errors.FileExists(to, str(e))
2932
 
            raise
 
3174
            # normal OSError doesn't include filenames so it's hard to see where
 
3175
            # the problem is, see https://bugs.launchpad.net/bzr/+bug/491763
 
3176
            raise errors.TransformRenameFailed(from_, to, str(e), e.errno)
2933
3177
        self.past_renames.append((from_, to))
2934
3178
 
2935
3179
    def pre_delete(self, from_, to):
2945
3189
    def rollback(self):
2946
3190
        """Reverse all renames that have been performed"""
2947
3191
        for from_, to in reversed(self.past_renames):
2948
 
            osutils.rename(to, from_)
 
3192
            try:
 
3193
                os.rename(to, from_)
 
3194
            except OSError as e:
 
3195
                raise errors.TransformRenameFailed(to, from_, str(e), e.errno)
2949
3196
        # after rollback, don't reuse _FileMover
2950
3197
        past_renames = None
2951
3198
        pending_deletions = None