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  • Committer: Marius Kruger
  • Date: 2008-07-16 20:24:50 UTC
  • mto: This revision was merged to the branch mainline in revision 3633.
  • Revision ID: amanic@gmail.com-20080716202450-qxzsk7mpfkl5gset
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# Copyright (C) 2007-2010 Canonical Ltd
 
1
# Copyright (C) 2005, 2006, 2007, 2008 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
12
12
#
13
13
# You should have received a copy of the GNU General Public License
14
14
# along with this program; if not, write to the Free Software
15
 
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
16
16
 
17
17
"""WorkingTree4 format and implementation.
18
18
 
28
28
 
29
29
from bzrlib.lazy_import import lazy_import
30
30
lazy_import(globals(), """
 
31
from bisect import bisect_left
 
32
import collections
 
33
from copy import deepcopy
31
34
import errno
 
35
import itertools
 
36
import operator
32
37
import stat
 
38
from time import time
 
39
import warnings
33
40
 
34
41
import bzrlib
35
42
from bzrlib import (
36
43
    bzrdir,
37
44
    cache_utf8,
 
45
    conflicts as _mod_conflicts,
38
46
    debug,
 
47
    delta,
39
48
    dirstate,
40
49
    errors,
41
50
    generate_ids,
 
51
    globbing,
 
52
    ignores,
 
53
    merge,
42
54
    osutils,
43
55
    revision as _mod_revision,
44
56
    revisiontree,
 
57
    textui,
45
58
    trace,
46
59
    transform,
47
 
    views,
 
60
    urlutils,
 
61
    xml5,
 
62
    xml6,
48
63
    )
49
64
import bzrlib.branch
 
65
from bzrlib.transport import get_transport
50
66
import bzrlib.ui
51
67
""")
52
68
 
 
69
from bzrlib import symbol_versioning
53
70
from bzrlib.decorators import needs_read_lock, needs_write_lock
54
 
from bzrlib.filters import filtered_input_file, internal_size_sha_file_byname
55
 
from bzrlib.inventory import Inventory, ROOT_ID, entry_factory
56
 
from bzrlib.lock import LogicalLockResult
 
71
from bzrlib.inventory import InventoryEntry, Inventory, ROOT_ID, entry_factory
 
72
from bzrlib.lockable_files import LockableFiles, TransportLock
 
73
from bzrlib.lockdir import LockDir
 
74
import bzrlib.mutabletree
57
75
from bzrlib.mutabletree import needs_tree_write_lock
58
76
from bzrlib.osutils import (
59
77
    file_kind,
60
78
    isdir,
 
79
    normpath,
61
80
    pathjoin,
 
81
    rand_chars,
62
82
    realpath,
63
83
    safe_unicode,
 
84
    splitpath,
64
85
    )
65
 
from bzrlib.trace import mutter
 
86
from bzrlib.trace import mutter, note
66
87
from bzrlib.transport.local import LocalTransport
67
88
from bzrlib.tree import InterTree
 
89
from bzrlib.progress import DummyProgress, ProgressPhase
 
90
from bzrlib.revision import NULL_REVISION, CURRENT_REVISION
 
91
from bzrlib.rio import RioReader, rio_file, Stanza
 
92
from bzrlib.symbol_versioning import (deprecated_passed,
 
93
        deprecated_method,
 
94
        deprecated_function,
 
95
        DEPRECATED_PARAMETER,
 
96
        )
68
97
from bzrlib.tree import Tree
69
98
from bzrlib.workingtree import WorkingTree, WorkingTree3, WorkingTreeFormat3
70
99
 
71
100
 
72
 
class DirStateWorkingTree(WorkingTree3):
 
101
# This is the Windows equivalent of ENOTDIR
 
102
# It is defined in pywin32.winerror, but we don't want a strong dependency for
 
103
# just an error code.
 
104
ERROR_PATH_NOT_FOUND = 3
 
105
ERROR_DIRECTORY = 267
 
106
 
 
107
 
 
108
class WorkingTree4(WorkingTree3):
 
109
    """This is the Format 4 working tree.
 
110
 
 
111
    This differs from WorkingTree3 by:
 
112
     - Having a consolidated internal dirstate, stored in a
 
113
       randomly-accessible sorted file on disk.
 
114
     - Not having a regular inventory attribute.  One can be synthesized 
 
115
       on demand but this is expensive and should be avoided.
 
116
 
 
117
    This is new in bzr 0.15.
 
118
    """
 
119
 
73
120
    def __init__(self, basedir,
74
121
                 branch,
75
122
                 _control_files=None,
102
149
        self._setup_directory_is_tree_reference()
103
150
        self._detect_case_handling()
104
151
        self._rules_searcher = None
105
 
        self.views = self._make_views()
106
 
        #--- allow tests to select the dirstate iter_changes implementation
107
 
        self._iter_changes = dirstate._process_entry
108
152
 
109
153
    @needs_tree_write_lock
110
154
    def _add(self, files, ids, kinds):
138
182
    @needs_tree_write_lock
139
183
    def add_reference(self, sub_tree):
140
184
        # use standard implementation, which calls back to self._add
141
 
        #
 
185
        # 
142
186
        # So we don't store the reference_revision in the working dirstate,
143
 
        # it's just recorded at the moment of commit.
 
187
        # it's just recorded at the moment of commit. 
144
188
        self._add_reference(sub_tree)
145
189
 
146
190
    def break_lock(self):
185
229
            WorkingTree3._comparison_data(self, entry, path)
186
230
        # it looks like a plain directory, but it's really a reference -- see
187
231
        # also kind()
188
 
        if (self._repo_supports_tree_reference and kind == 'directory'
189
 
            and entry is not None and entry.kind == 'tree-reference'):
 
232
        if (self._repo_supports_tree_reference and
 
233
            kind == 'directory' and
 
234
            self._directory_is_tree_reference(path)):
190
235
            kind = 'tree-reference'
191
236
        return kind, executable, stat_value
192
237
 
218
263
            return self._dirstate
219
264
        local_path = self.bzrdir.get_workingtree_transport(None
220
265
            ).local_abspath('dirstate')
221
 
        self._dirstate = dirstate.DirState.on_file(local_path,
222
 
            self._sha1_provider())
 
266
        self._dirstate = dirstate.DirState.on_file(local_path)
223
267
        return self._dirstate
224
268
 
225
 
    def _sha1_provider(self):
226
 
        """A function that returns a SHA1Provider suitable for this tree.
227
 
 
228
 
        :return: None if content filtering is not supported by this tree.
229
 
          Otherwise, a SHA1Provider is returned that sha's the canonical
230
 
          form of files, i.e. after read filters are applied.
231
 
        """
232
 
        if self.supports_content_filtering():
233
 
            return ContentFilterAwareSHA1Provider(self)
234
 
        else:
235
 
            return None
236
 
 
237
269
    def filter_unversioned_files(self, paths):
238
270
        """Filter out paths that are versioned.
239
271
 
271
303
 
272
304
    def _generate_inventory(self):
273
305
        """Create and set self.inventory from the dirstate object.
274
 
 
 
306
        
275
307
        This is relatively expensive: we have to walk the entire dirstate.
276
308
        Ideally we would not, and can deprecate this function.
277
309
        """
322
354
                    parent_ies[(dirname + '/' + name).strip('/')] = inv_entry
323
355
                elif kind == 'tree-reference':
324
356
                    if not self._repo_supports_tree_reference:
325
 
                        raise errors.UnsupportedOperation(
326
 
                            self._generate_inventory,
327
 
                            self.branch.repository)
 
357
                        raise AssertionError(
 
358
                            "repository of %r "
 
359
                            "doesn't support tree references "
 
360
                            "required by entry %r"
 
361
                            % (self, name))
328
362
                    inv_entry.reference_revision = link_or_sha1 or None
329
363
                elif kind != 'symlink':
330
364
                    raise AssertionError("unknown kind %r" % kind)
345
379
        If either file_id or path is supplied, it is used as the key to lookup.
346
380
        If both are supplied, the fastest lookup is used, and an error is
347
381
        raised if they do not both point at the same row.
348
 
 
 
382
        
349
383
        :param file_id: An optional unicode file_id to be looked up.
350
384
        :param path: An optional unicode path to be looked up.
351
385
        :return: The dirstate row tuple for path/file_id, or (None, None)
375
409
                    return None
376
410
                else:
377
411
                    raise
378
 
        link_or_sha1 = dirstate.update_entry(state, entry, file_abspath,
379
 
            stat_value=stat_value)
 
412
        link_or_sha1 = state.update_entry(entry, file_abspath,
 
413
                                          stat_value=stat_value)
380
414
        if entry[1][0][0] == 'f':
381
 
            if link_or_sha1 is None:
382
 
                file_obj, statvalue = self.get_file_with_stat(file_id, path)
383
 
                try:
384
 
                    sha1 = osutils.sha_file(file_obj)
385
 
                finally:
386
 
                    file_obj.close()
387
 
                self._observed_sha1(file_id, path, (sha1, statvalue))
388
 
                return sha1
389
 
            else:
390
 
                return link_or_sha1
 
415
            return link_or_sha1
391
416
        return None
392
417
 
393
418
    def _get_inventory(self):
407
432
    @needs_read_lock
408
433
    def get_parent_ids(self):
409
434
        """See Tree.get_parent_ids.
410
 
 
 
435
        
411
436
        This implementation requests the ids list from the dirstate file.
412
437
        """
413
438
        return self.current_dirstate().get_parent_ids()
435
460
        return osutils.lexists(pathjoin(
436
461
                    self.basedir, row[0].decode('utf8'), row[1].decode('utf8')))
437
462
 
438
 
    def has_or_had_id(self, file_id):
439
 
        state = self.current_dirstate()
440
 
        row, parents = self._get_entry(file_id=file_id)
441
 
        return row is not None
442
 
 
443
463
    @needs_read_lock
444
464
    def id2path(self, file_id):
445
465
        "Convert a file-id to a path."
528
548
                # path is missing on disk.
529
549
                continue
530
550
 
531
 
    def _observed_sha1(self, file_id, path, (sha1, statvalue)):
532
 
        """See MutableTree._observed_sha1."""
533
 
        state = self.current_dirstate()
534
 
        entry = self._get_entry(file_id=file_id, path=path)
535
 
        state._observed_sha1(entry, sha1, statvalue)
536
 
 
537
551
    def kind(self, file_id):
538
552
        """Return the kind of a file.
539
553
 
551
565
    def _kind(self, relpath):
552
566
        abspath = self.abspath(relpath)
553
567
        kind = file_kind(abspath)
554
 
        if (self._repo_supports_tree_reference and kind == 'directory'):
555
 
            entry = self._get_entry(path=relpath)
556
 
            if entry[1] is not None:
557
 
                if entry[1][0][0] == 't':
558
 
                    kind = 'tree-reference'
 
568
        if (self._repo_supports_tree_reference and
 
569
            kind == 'directory' and
 
570
            self._directory_is_tree_reference(relpath)):
 
571
            kind = 'tree-reference'
559
572
        return kind
560
573
 
561
574
    @needs_read_lock
568
581
            return _mod_revision.NULL_REVISION
569
582
 
570
583
    def lock_read(self):
571
 
        """See Branch.lock_read, and WorkingTree.unlock.
572
 
 
573
 
        :return: A bzrlib.lock.LogicalLockResult.
574
 
        """
 
584
        """See Branch.lock_read, and WorkingTree.unlock."""
575
585
        self.branch.lock_read()
576
586
        try:
577
587
            self._control_files.lock_read()
590
600
        except:
591
601
            self.branch.unlock()
592
602
            raise
593
 
        return LogicalLockResult(self.unlock)
594
603
 
595
604
    def _lock_self_write(self):
596
605
        """This should be called after the branch is locked."""
611
620
        except:
612
621
            self.branch.unlock()
613
622
            raise
614
 
        return LogicalLockResult(self.unlock)
615
623
 
616
624
    def lock_tree_write(self):
617
 
        """See MutableTree.lock_tree_write, and WorkingTree.unlock.
618
 
 
619
 
        :return: A bzrlib.lock.LogicalLockResult.
620
 
        """
 
625
        """See MutableTree.lock_tree_write, and WorkingTree.unlock."""
621
626
        self.branch.lock_read()
622
 
        return self._lock_self_write()
 
627
        self._lock_self_write()
623
628
 
624
629
    def lock_write(self):
625
 
        """See MutableTree.lock_write, and WorkingTree.unlock.
626
 
 
627
 
        :return: A bzrlib.lock.LogicalLockResult.
628
 
        """
 
630
        """See MutableTree.lock_write, and WorkingTree.unlock."""
629
631
        self.branch.lock_write()
630
 
        return self._lock_self_write()
 
632
        self._lock_self_write()
631
633
 
632
634
    @needs_tree_write_lock
633
635
    def move(self, from_paths, to_dir, after=False):
703
705
            from_entry = self._get_entry(path=from_rel)
704
706
            if from_entry == (None, None):
705
707
                raise errors.BzrMoveFailedError(from_rel,to_dir,
706
 
                    errors.NotVersionedError(path=from_rel))
 
708
                    errors.NotVersionedError(path=str(from_rel)))
707
709
 
708
710
            from_id = from_entry[0][2]
709
711
            to_rel = pathjoin(to_dir, from_tail)
884
886
        for tree in trees:
885
887
            if not (isinstance(tree, DirStateRevisionTree) and tree._revision_id in
886
888
                parents):
887
 
                return super(DirStateWorkingTree, self).paths2ids(paths,
888
 
                    trees, require_versioned)
 
889
                return super(WorkingTree4, self).paths2ids(paths, trees, require_versioned)
889
890
        search_indexes = [0] + [1 + parents.index(tree._revision_id) for tree in trees]
890
891
        # -- make all paths utf8 --
891
892
        paths_utf8 = set()
952
953
                raise errors.PathsNotVersionedError(paths)
953
954
        # -- remove redundancy in supplied paths to prevent over-scanning --
954
955
        search_paths = osutils.minimum_path_selection(paths)
955
 
        # sketch:
 
956
        # sketch: 
956
957
        # for all search_indexs in each path at or under each element of
957
958
        # search_paths, if the detail is relocated: add the id, and add the
958
959
        # relocated path as one to search if its not searched already. If the
1014
1015
 
1015
1016
    def read_working_inventory(self):
1016
1017
        """Read the working inventory.
1017
 
 
 
1018
        
1018
1019
        This is a meaningless operation for dirstate, but we obey it anyhow.
1019
1020
        """
1020
1021
        return self.inventory
1038
1039
    def set_last_revision(self, new_revision):
1039
1040
        """Change the last revision in the working tree."""
1040
1041
        parents = self.get_parent_ids()
1041
 
        if new_revision in (_mod_revision.NULL_REVISION, None):
 
1042
        if new_revision in (NULL_REVISION, None):
1042
1043
            if len(parents) >= 2:
1043
1044
                raise AssertionError(
1044
1045
                    "setting the last parent to none with a pending merge is "
1051
1052
    @needs_tree_write_lock
1052
1053
    def set_parent_ids(self, revision_ids, allow_leftmost_as_ghost=False):
1053
1054
        """Set the parent ids to revision_ids.
1054
 
 
 
1055
        
1055
1056
        See also set_parent_trees. This api will try to retrieve the tree data
1056
1057
        for each element of revision_ids from the trees repository. If you have
1057
1058
        tree data already available, it is more efficient to use
1109
1110
                real_trees.append((rev_id, tree))
1110
1111
            else:
1111
1112
                real_trees.append((rev_id,
1112
 
                    self.branch.repository.revision_tree(
1113
 
                        _mod_revision.NULL_REVISION)))
 
1113
                    self.branch.repository.revision_tree(None)))
1114
1114
                ghosts.append(rev_id)
1115
1115
            accepted_revisions.add(rev_id)
1116
1116
        dirstate.set_parent_trees(real_trees, ghosts=ghosts)
1211
1211
                # just forget the whole block.
1212
1212
                entry_index = 0
1213
1213
                while entry_index < len(block[1]):
 
1214
                    # Mark this file id as having been removed
1214
1215
                    entry = block[1][entry_index]
1215
 
                    if entry[1][0][0] in 'ar':
1216
 
                        # don't remove absent or renamed entries
 
1216
                    ids_to_unversion.discard(entry[0][2])
 
1217
                    if (entry[1][0][0] in 'ar' # don't remove absent or renamed
 
1218
                                               # entries
 
1219
                        or not state._make_absent(entry)):
1217
1220
                        entry_index += 1
1218
 
                    else:
1219
 
                        # Mark this file id as having been removed
1220
 
                        ids_to_unversion.discard(entry[0][2])
1221
 
                        if not state._make_absent(entry):
1222
 
                            # The block has not shrunk.
1223
 
                            entry_index += 1
1224
1221
                # go to the next block. (At the moment we dont delete empty
1225
1222
                # dirblocks)
1226
1223
                block_index += 1
1278
1275
        if self._dirty:
1279
1276
            raise AssertionError("attempting to write an inventory when the "
1280
1277
                "dirstate is dirty will lose pending changes")
1281
 
        had_inventory = self._inventory is not None
1282
 
        # Setting self._inventory = None forces the dirstate to regenerate the
1283
 
        # working inventory. We do this because self.inventory may be inv, or
1284
 
        # may have been modified, and either case would prevent a clean delta
1285
 
        # being created.
1286
 
        self._inventory = None
1287
 
        # generate a delta,
1288
 
        delta = inv._make_delta(self.inventory)
1289
 
        # and apply it.
1290
 
        self.apply_inventory_delta(delta)
1291
 
        if had_inventory:
 
1278
        self.current_dirstate().set_state_from_inventory(inv)
 
1279
        self._make_dirty(reset_inventory=False)
 
1280
        if self._inventory is not None:
1292
1281
            self._inventory = inv
1293
1282
        self.flush()
1294
1283
 
1295
1284
 
1296
 
class ContentFilterAwareSHA1Provider(dirstate.SHA1Provider):
1297
 
 
1298
 
    def __init__(self, tree):
1299
 
        self.tree = tree
1300
 
 
1301
 
    def sha1(self, abspath):
1302
 
        """See dirstate.SHA1Provider.sha1()."""
1303
 
        filters = self.tree._content_filter_stack(
1304
 
            self.tree.relpath(osutils.safe_unicode(abspath)))
1305
 
        return internal_size_sha_file_byname(abspath, filters)[1]
1306
 
 
1307
 
    def stat_and_sha1(self, abspath):
1308
 
        """See dirstate.SHA1Provider.stat_and_sha1()."""
1309
 
        filters = self.tree._content_filter_stack(
1310
 
            self.tree.relpath(osutils.safe_unicode(abspath)))
1311
 
        file_obj = file(abspath, 'rb', 65000)
1312
 
        try:
1313
 
            statvalue = os.fstat(file_obj.fileno())
1314
 
            if filters:
1315
 
                file_obj = filtered_input_file(file_obj, filters)
1316
 
            sha1 = osutils.size_sha_file(file_obj)[1]
1317
 
        finally:
1318
 
            file_obj.close()
1319
 
        return statvalue, sha1
1320
 
 
1321
 
 
1322
 
class ContentFilteringDirStateWorkingTree(DirStateWorkingTree):
1323
 
    """Dirstate working tree that supports content filtering.
1324
 
 
1325
 
    The dirstate holds the hash and size of the canonical form of the file, 
1326
 
    and most methods must return that.
1327
 
    """
1328
 
 
1329
 
    def _file_content_summary(self, path, stat_result):
1330
 
        # This is to support the somewhat obsolete path_content_summary method
1331
 
        # with content filtering: see
1332
 
        # <https://bugs.edge.launchpad.net/bzr/+bug/415508>.
1333
 
        #
1334
 
        # If the dirstate cache is up to date and knows the hash and size,
1335
 
        # return that.
1336
 
        # Otherwise if there are no content filters, return the on-disk size
1337
 
        # and leave the hash blank.
1338
 
        # Otherwise, read and filter the on-disk file and use its size and
1339
 
        # hash.
1340
 
        #
1341
 
        # The dirstate doesn't store the size of the canonical form so we
1342
 
        # can't trust it for content-filtered trees.  We just return None.
1343
 
        dirstate_sha1 = self._dirstate.sha1_from_stat(path, stat_result)
1344
 
        executable = self._is_executable_from_path_and_stat(path, stat_result)
1345
 
        return ('file', None, executable, dirstate_sha1)
1346
 
 
1347
 
 
1348
 
class WorkingTree4(DirStateWorkingTree):
1349
 
    """This is the Format 4 working tree.
1350
 
 
1351
 
    This differs from WorkingTree3 by:
1352
 
     - Having a consolidated internal dirstate, stored in a
1353
 
       randomly-accessible sorted file on disk.
1354
 
     - Not having a regular inventory attribute.  One can be synthesized
1355
 
       on demand but this is expensive and should be avoided.
1356
 
 
1357
 
    This is new in bzr 0.15.
1358
 
    """
1359
 
 
1360
 
 
1361
 
class WorkingTree5(ContentFilteringDirStateWorkingTree):
1362
 
    """This is the Format 5 working tree.
1363
 
 
1364
 
    This differs from WorkingTree4 by:
1365
 
     - Supporting content filtering.
1366
 
 
1367
 
    This is new in bzr 1.11.
1368
 
    """
1369
 
 
1370
 
 
1371
 
class WorkingTree6(ContentFilteringDirStateWorkingTree):
1372
 
    """This is the Format 6 working tree.
1373
 
 
1374
 
    This differs from WorkingTree5 by:
1375
 
     - Supporting a current view that may mask the set of files in a tree
1376
 
       impacted by most user operations.
1377
 
 
1378
 
    This is new in bzr 1.14.
1379
 
    """
1380
 
 
1381
 
    def _make_views(self):
1382
 
        return views.PathBasedViews(self)
1383
 
 
1384
 
 
1385
 
class DirStateWorkingTreeFormat(WorkingTreeFormat3):
 
1285
class WorkingTreeFormat4(WorkingTreeFormat3):
 
1286
    """The first consolidated dirstate working tree format.
 
1287
 
 
1288
    This format:
 
1289
        - exists within a metadir controlling .bzr
 
1290
        - includes an explicit version marker for the workingtree control
 
1291
          files, separate from the BzrDir format
 
1292
        - modifies the hash cache format
 
1293
        - is new in bzr 0.15
 
1294
        - uses a LockDir to guard access to it.
 
1295
    """
 
1296
 
 
1297
    upgrade_recommended = False
 
1298
 
 
1299
    def get_format_string(self):
 
1300
        """See WorkingTreeFormat.get_format_string()."""
 
1301
        return "Bazaar Working Tree Format 4 (bzr 0.15)\n"
 
1302
 
 
1303
    def get_format_description(self):
 
1304
        """See WorkingTreeFormat.get_format_description()."""
 
1305
        return "Working tree format 4"
1386
1306
 
1387
1307
    def initialize(self, a_bzrdir, revision_id=None, from_branch=None,
1388
1308
                   accelerator_tree=None, hardlink=False):
1419
1339
        state = dirstate.DirState.initialize(local_path)
1420
1340
        state.unlock()
1421
1341
        del state
1422
 
        wt = self._tree_class(a_bzrdir.root_transport.local_abspath('.'),
 
1342
        wt = WorkingTree4(a_bzrdir.root_transport.local_abspath('.'),
1423
1343
                         branch,
1424
1344
                         _format=self,
1425
1345
                         _bzrdir=a_bzrdir,
1427
1347
        wt._new_tree()
1428
1348
        wt.lock_tree_write()
1429
1349
        try:
1430
 
            self._init_custom_control_files(wt)
1431
 
            if revision_id in (None, _mod_revision.NULL_REVISION):
 
1350
            if revision_id in (None, NULL_REVISION):
1432
1351
                if branch.repository.supports_rich_root():
1433
1352
                    wt._set_root_id(generate_ids.gen_root_id())
1434
1353
                else:
1445
1364
                    pass
1446
1365
            if basis is None:
1447
1366
                basis = branch.repository.revision_tree(revision_id)
1448
 
            if revision_id == _mod_revision.NULL_REVISION:
 
1367
            if revision_id == NULL_REVISION:
1449
1368
                parents_list = []
1450
1369
            else:
1451
1370
                parents_list = [(revision_id, basis)]
1459
1378
                if basis_root_id is not None:
1460
1379
                    wt._set_root_id(basis_root_id)
1461
1380
                    wt.flush()
1462
 
                if wt.supports_content_filtering():
1463
 
                    # The original tree may not have the same content filters
1464
 
                    # applied so we can't safely build the inventory delta from
1465
 
                    # the source tree.
1466
 
                    delta_from_tree = False
1467
 
                else:
1468
 
                    delta_from_tree = True
1469
1381
                # delta_from_tree is safe even for DirStateRevisionTrees,
1470
1382
                # because wt4.apply_inventory_delta does not mutate the input
1471
1383
                # inventory entries.
1472
1384
                transform.build_tree(basis, wt, accelerator_tree,
1473
 
                                     hardlink=hardlink,
1474
 
                                     delta_from_tree=delta_from_tree)
 
1385
                                     hardlink=hardlink, delta_from_tree=True)
1475
1386
            finally:
1476
1387
                basis.unlock()
1477
1388
        finally:
1479
1390
            wt.unlock()
1480
1391
        return wt
1481
1392
 
1482
 
    def _init_custom_control_files(self, wt):
1483
 
        """Subclasses with custom control files should override this method.
1484
 
 
1485
 
        The working tree and control files are locked for writing when this
1486
 
        method is called.
1487
 
 
1488
 
        :param wt: the WorkingTree object
1489
 
        """
1490
 
 
1491
1393
    def _open(self, a_bzrdir, control_files):
1492
1394
        """Open the tree itself.
1493
1395
 
1494
1396
        :param a_bzrdir: the dir for the tree.
1495
1397
        :param control_files: the control files for the tree.
1496
1398
        """
1497
 
        return self._tree_class(a_bzrdir.root_transport.local_abspath('.'),
 
1399
        return WorkingTree4(a_bzrdir.root_transport.local_abspath('.'),
1498
1400
                           branch=a_bzrdir.open_branch(),
1499
1401
                           _format=self,
1500
1402
                           _bzrdir=a_bzrdir,
1501
1403
                           _control_files=control_files)
1502
1404
 
1503
1405
    def __get_matchingbzrdir(self):
1504
 
        return self._get_matchingbzrdir()
1505
 
 
1506
 
    def _get_matchingbzrdir(self):
1507
 
        """Overrideable method to get a bzrdir for testing."""
1508
1406
        # please test against something that will let us do tree references
1509
1407
        return bzrdir.format_registry.make_bzrdir(
1510
1408
            'dirstate-with-subtree')
1512
1410
    _matchingbzrdir = property(__get_matchingbzrdir)
1513
1411
 
1514
1412
 
1515
 
class WorkingTreeFormat4(DirStateWorkingTreeFormat):
1516
 
    """The first consolidated dirstate working tree format.
1517
 
 
1518
 
    This format:
1519
 
        - exists within a metadir controlling .bzr
1520
 
        - includes an explicit version marker for the workingtree control
1521
 
          files, separate from the BzrDir format
1522
 
        - modifies the hash cache format
1523
 
        - is new in bzr 0.15
1524
 
        - uses a LockDir to guard access to it.
1525
 
    """
1526
 
 
1527
 
    upgrade_recommended = False
1528
 
 
1529
 
    _tree_class = WorkingTree4
1530
 
 
1531
 
    def get_format_string(self):
1532
 
        """See WorkingTreeFormat.get_format_string()."""
1533
 
        return "Bazaar Working Tree Format 4 (bzr 0.15)\n"
1534
 
 
1535
 
    def get_format_description(self):
1536
 
        """See WorkingTreeFormat.get_format_description()."""
1537
 
        return "Working tree format 4"
1538
 
 
1539
 
 
1540
 
class WorkingTreeFormat5(DirStateWorkingTreeFormat):
1541
 
    """WorkingTree format supporting content filtering.
1542
 
    """
1543
 
 
1544
 
    upgrade_recommended = False
1545
 
 
1546
 
    _tree_class = WorkingTree5
1547
 
 
1548
 
    def get_format_string(self):
1549
 
        """See WorkingTreeFormat.get_format_string()."""
1550
 
        return "Bazaar Working Tree Format 5 (bzr 1.11)\n"
1551
 
 
1552
 
    def get_format_description(self):
1553
 
        """See WorkingTreeFormat.get_format_description()."""
1554
 
        return "Working tree format 5"
1555
 
 
1556
 
    def supports_content_filtering(self):
1557
 
        return True
1558
 
 
1559
 
 
1560
 
class WorkingTreeFormat6(DirStateWorkingTreeFormat):
1561
 
    """WorkingTree format supporting views.
1562
 
    """
1563
 
 
1564
 
    upgrade_recommended = False
1565
 
 
1566
 
    _tree_class = WorkingTree6
1567
 
 
1568
 
    def get_format_string(self):
1569
 
        """See WorkingTreeFormat.get_format_string()."""
1570
 
        return "Bazaar Working Tree Format 6 (bzr 1.14)\n"
1571
 
 
1572
 
    def get_format_description(self):
1573
 
        """See WorkingTreeFormat.get_format_description()."""
1574
 
        return "Working tree format 6"
1575
 
 
1576
 
    def _init_custom_control_files(self, wt):
1577
 
        """Subclasses with custom control files should override this method."""
1578
 
        wt._transport.put_bytes('views', '', mode=wt.bzrdir._get_file_mode())
1579
 
 
1580
 
    def supports_content_filtering(self):
1581
 
        return True
1582
 
 
1583
 
    def supports_views(self):
1584
 
        return True
1585
 
 
1586
 
 
1587
1413
class DirStateRevisionTree(Tree):
1588
 
    """A revision tree pulling the inventory from a dirstate.
1589
 
    
1590
 
    Note that this is one of the historical (ie revision) trees cached in the
1591
 
    dirstate for easy access, not the workingtree.
1592
 
    """
 
1414
    """A revision tree pulling the inventory from a dirstate."""
1593
1415
 
1594
1416
    def __init__(self, dirstate, revision_id, repository):
1595
1417
        self._dirstate = dirstate
1664
1486
        If either file_id or path is supplied, it is used as the key to lookup.
1665
1487
        If both are supplied, the fastest lookup is used, and an error is
1666
1488
        raised if they do not both point at the same row.
1667
 
 
 
1489
        
1668
1490
        :param file_id: An optional unicode file_id to be looked up.
1669
1491
        :param path: An optional unicode path to be looked up.
1670
1492
        :return: The dirstate row tuple for path/file_id, or (None, None)
1767
1589
            return None
1768
1590
        parent_index = self._get_parent_index()
1769
1591
        last_changed_revision = entry[1][parent_index][4]
1770
 
        try:
1771
 
            rev = self._repository.get_revision(last_changed_revision)
1772
 
        except errors.NoSuchRevision:
1773
 
            raise errors.FileTimestampUnavailable(self.id2path(file_id))
1774
 
        return rev.timestamp
 
1592
        return self._repository.get_revision(last_changed_revision).timestamp
1775
1593
 
1776
1594
    def get_file_sha1(self, file_id, path=None, stat_value=None):
1777
1595
        entry = self._get_entry(file_id=file_id, path=path)
1784
1602
    def get_file(self, file_id, path=None):
1785
1603
        return StringIO(self.get_file_text(file_id))
1786
1604
 
 
1605
    def get_file_lines(self, file_id):
 
1606
        return osutils.split_lines(self.get_file_text(file_id))
 
1607
 
1787
1608
    def get_file_size(self, file_id):
1788
1609
        """See Tree.get_file_size"""
1789
1610
        return self.inventory[file_id].text_size
1790
1611
 
1791
 
    def get_file_text(self, file_id, path=None):
1792
 
        _, content = list(self.iter_files_bytes([(file_id, None)]))[0]
1793
 
        return ''.join(content)
 
1612
    def get_file_text(self, file_id):
 
1613
        return list(self.iter_files_bytes([(file_id, None)]))[0][1]
1794
1614
 
1795
1615
    def get_reference_revision(self, file_id, path=None):
1796
1616
        return self.inventory[file_id].reference_revision
1815
1635
        if entry[1][parent_index][0] != 'l':
1816
1636
            return None
1817
1637
        else:
1818
 
            target = entry[1][parent_index][1]
1819
 
            target = target.decode('utf8')
1820
 
            return target
 
1638
            # At present, none of the tree implementations supports non-ascii
 
1639
            # symlink targets. So we will just assume that the dirstate path is
 
1640
            # correct.
 
1641
            return entry[1][parent_index][1]
1821
1642
 
1822
1643
    def get_revision_id(self):
1823
1644
        """Return the revision id for this tree."""
1844
1665
        entry = self._get_entry(file_id=file_id)[1]
1845
1666
        if entry is None:
1846
1667
            raise errors.NoSuchId(tree=self, file_id=file_id)
1847
 
        parent_index = self._get_parent_index()
1848
 
        return dirstate.DirState._minikind_to_kind[entry[parent_index][0]]
 
1668
        return dirstate.DirState._minikind_to_kind[entry[1][0]]
1849
1669
 
1850
1670
    def stored_kind(self, file_id):
1851
1671
        """See Tree.stored_kind"""
1871
1691
            return None
1872
1692
        return ie.executable
1873
1693
 
1874
 
    def is_locked(self):
1875
 
        return self._locked
1876
 
 
1877
 
    def list_files(self, include_root=False, from_dir=None, recursive=True):
 
1694
    def list_files(self, include_root=False):
1878
1695
        # We use a standard implementation, because DirStateRevisionTree is
1879
1696
        # dealing with one of the parents of the current state
1880
1697
        inv = self._get_inventory()
1881
 
        if from_dir is None:
1882
 
            from_dir_id = None
1883
 
        else:
1884
 
            from_dir_id = inv.path2id(from_dir)
1885
 
            if from_dir_id is None:
1886
 
                # Directory not versioned
1887
 
                return
1888
 
        entries = inv.iter_entries(from_dir=from_dir_id, recursive=recursive)
1889
 
        if inv.root is not None and not include_root and from_dir is None:
 
1698
        entries = inv.iter_entries()
 
1699
        if self.inventory.root is not None and not include_root:
1890
1700
            entries.next()
1891
1701
        for path, entry in entries:
1892
1702
            yield path, 'V', entry.kind, entry.file_id, entry
1893
1703
 
1894
1704
    def lock_read(self):
1895
 
        """Lock the tree for a set of operations.
1896
 
 
1897
 
        :return: A bzrlib.lock.LogicalLockResult.
1898
 
        """
 
1705
        """Lock the tree for a set of operations."""
1899
1706
        if not self._locked:
1900
1707
            self._repository.lock_read()
1901
1708
            if self._dirstate._lock_token is None:
1902
1709
                self._dirstate.lock_read()
1903
1710
                self._dirstate_locked = True
1904
1711
        self._locked += 1
1905
 
        return LogicalLockResult(self.unlock)
1906
1712
 
1907
1713
    def _must_be_locked(self):
1908
1714
        if not self._locked:
1935
1741
 
1936
1742
    def walkdirs(self, prefix=""):
1937
1743
        # TODO: jam 20070215 This is the lazy way by using the RevisionTree
1938
 
        # implementation based on an inventory.
 
1744
        # implementation based on an inventory.  
1939
1745
        # This should be cleaned up to use the much faster Dirstate code
1940
1746
        # So for now, we just build up the parent inventory, and extract
1941
1747
        # it the same way RevisionTree does.
1970
1776
 
1971
1777
class InterDirStateTree(InterTree):
1972
1778
    """Fast path optimiser for changes_from with dirstate trees.
1973
 
 
1974
 
    This is used only when both trees are in the dirstate working file, and
1975
 
    the source is any parent within the dirstate, and the destination is
 
1779
    
 
1780
    This is used only when both trees are in the dirstate working file, and 
 
1781
    the source is any parent within the dirstate, and the destination is 
1976
1782
    the current working tree of the same dirstate.
1977
1783
    """
1978
1784
    # this could be generalized to allow comparisons between any trees in the
1991
1797
        target.set_parent_ids([revid])
1992
1798
        return target.basis_tree(), target
1993
1799
 
1994
 
    @classmethod
1995
 
    def make_source_parent_tree_python_dirstate(klass, test_case, source, target):
1996
 
        result = klass.make_source_parent_tree(source, target)
1997
 
        result[1]._iter_changes = dirstate.ProcessEntryPython
1998
 
        return result
1999
 
 
2000
 
    @classmethod
2001
 
    def make_source_parent_tree_compiled_dirstate(klass, test_case, source,
2002
 
                                                  target):
2003
 
        from bzrlib.tests.test__dirstate_helpers import \
2004
 
            compiled_dirstate_helpers_feature
2005
 
        test_case.requireFeature(compiled_dirstate_helpers_feature)
2006
 
        from bzrlib._dirstate_helpers_pyx import ProcessEntryC
2007
 
        result = klass.make_source_parent_tree(source, target)
2008
 
        result[1]._iter_changes = ProcessEntryC
2009
 
        return result
2010
 
 
2011
1800
    _matching_from_tree_format = WorkingTreeFormat4()
2012
1801
    _matching_to_tree_format = WorkingTreeFormat4()
2013
 
 
2014
 
    @classmethod
2015
 
    def _test_mutable_trees_to_test_trees(klass, test_case, source, target):
2016
 
        # This method shouldn't be called, because we have python and C
2017
 
        # specific flavours.
2018
 
        raise NotImplementedError
 
1802
    _test_mutable_trees_to_test_trees = make_source_parent_tree
2019
1803
 
2020
1804
    def iter_changes(self, include_unchanged=False,
2021
1805
                      specific_files=None, pb=None, extra_trees=[],
2039
1823
            output. An unversioned file is defined as one with (False, False)
2040
1824
            for the versioned pair.
2041
1825
        """
 
1826
        utf8_decode = cache_utf8._utf8_decode
 
1827
        _minikind_to_kind = dirstate.DirState._minikind_to_kind
 
1828
        cmp_by_dirs = dirstate.cmp_by_dirs
 
1829
        # NB: show_status depends on being able to pass in non-versioned files
 
1830
        # and report them as unknown
2042
1831
        # TODO: handle extra trees in the dirstate.
2043
1832
        if (extra_trees or specific_files == []):
2044
1833
            # we can't fast-path these cases (yet)
2045
 
            return super(InterDirStateTree, self).iter_changes(
 
1834
            for f in super(InterDirStateTree, self).iter_changes(
2046
1835
                include_unchanged, specific_files, pb, extra_trees,
2047
 
                require_versioned, want_unversioned=want_unversioned)
 
1836
                require_versioned, want_unversioned=want_unversioned):
 
1837
                yield f
 
1838
            return
2048
1839
        parent_ids = self.target.get_parent_ids()
2049
1840
        if not (self.source._revision_id in parent_ids
2050
 
                or self.source._revision_id == _mod_revision.NULL_REVISION):
 
1841
                or self.source._revision_id == NULL_REVISION):
2051
1842
            raise AssertionError(
2052
1843
                "revision {%s} is not stored in {%s}, but %s "
2053
1844
                "can only be used for trees stored in the dirstate"
2054
1845
                % (self.source._revision_id, self.target, self.iter_changes))
2055
1846
        target_index = 0
2056
 
        if self.source._revision_id == _mod_revision.NULL_REVISION:
 
1847
        if self.source._revision_id == NULL_REVISION:
2057
1848
            source_index = None
2058
1849
            indices = (target_index,)
2059
1850
        else:
2067
1858
        if specific_files:
2068
1859
            specific_files_utf8 = set()
2069
1860
            for path in specific_files:
2070
 
                # Note, if there are many specific files, using cache_utf8
2071
 
                # would be good here.
2072
1861
                specific_files_utf8.add(path.encode('utf8'))
2073
1862
            specific_files = specific_files_utf8
2074
1863
        else:
2075
1864
            specific_files = set([''])
2076
1865
        # -- specific_files is now a utf8 path set --
2077
 
 
2078
1866
        # -- get the state object and prepare it.
2079
1867
        state = self.target.current_dirstate()
2080
1868
        state._read_dirblocks_if_needed()
 
1869
        def _entries_for_path(path):
 
1870
            """Return a list with all the entries that match path for all ids.
 
1871
            """
 
1872
            dirname, basename = os.path.split(path)
 
1873
            key = (dirname, basename, '')
 
1874
            block_index, present = state._find_block_index_from_key(key)
 
1875
            if not present:
 
1876
                # the block which should contain path is absent.
 
1877
                return []
 
1878
            result = []
 
1879
            block = state._dirblocks[block_index][1]
 
1880
            entry_index, _ = state._find_entry_index(key, block)
 
1881
            # we may need to look at multiple entries at this path: walk while the specific_files match.
 
1882
            while (entry_index < len(block) and
 
1883
                block[entry_index][0][0:2] == key[0:2]):
 
1884
                result.append(block[entry_index])
 
1885
                entry_index += 1
 
1886
            return result
2081
1887
        if require_versioned:
2082
1888
            # -- check all supplied paths are versioned in a search tree. --
2083
 
            not_versioned = []
 
1889
            all_versioned = True
2084
1890
            for path in specific_files:
2085
 
                path_entries = state._entries_for_path(path)
 
1891
                path_entries = _entries_for_path(path)
2086
1892
                if not path_entries:
2087
1893
                    # this specified path is not present at all: error
2088
 
                    not_versioned.append(path)
2089
 
                    continue
 
1894
                    all_versioned = False
 
1895
                    break
2090
1896
                found_versioned = False
2091
1897
                # for each id at this path
2092
1898
                for entry in path_entries:
2099
1905
                if not found_versioned:
2100
1906
                    # none of the indexes was not 'absent' at all ids for this
2101
1907
                    # path.
2102
 
                    not_versioned.append(path)
2103
 
            if len(not_versioned) > 0:
2104
 
                raise errors.PathsNotVersionedError(not_versioned)
 
1908
                    all_versioned = False
 
1909
                    break
 
1910
            if not all_versioned:
 
1911
                raise errors.PathsNotVersionedError(specific_files)
2105
1912
        # -- remove redundancy in supplied specific_files to prevent over-scanning --
2106
 
        search_specific_files = osutils.minimum_path_selection(specific_files)
 
1913
        search_specific_files = set()
 
1914
        for path in specific_files:
 
1915
            other_specific_files = specific_files.difference(set([path]))
 
1916
            if not osutils.is_inside_any(other_specific_files, path):
 
1917
                # this is a top level path, we must check it.
 
1918
                search_specific_files.add(path)
 
1919
        # sketch: 
 
1920
        # compare source_index and target_index at or under each element of search_specific_files.
 
1921
        # follow the following comparison table. Note that we only want to do diff operations when
 
1922
        # the target is fdl because thats when the walkdirs logic will have exposed the pathinfo 
 
1923
        # for the target.
 
1924
        # cases:
 
1925
        # 
 
1926
        # Source | Target | disk | action
 
1927
        #   r    | fdlt   |      | add source to search, add id path move and perform
 
1928
        #        |        |      | diff check on source-target
 
1929
        #   r    | fdlt   |  a   | dangling file that was present in the basis. 
 
1930
        #        |        |      | ???
 
1931
        #   r    |  a     |      | add source to search
 
1932
        #   r    |  a     |  a   | 
 
1933
        #   r    |  r     |      | this path is present in a non-examined tree, skip.
 
1934
        #   r    |  r     |  a   | this path is present in a non-examined tree, skip.
 
1935
        #   a    | fdlt   |      | add new id
 
1936
        #   a    | fdlt   |  a   | dangling locally added file, skip
 
1937
        #   a    |  a     |      | not present in either tree, skip
 
1938
        #   a    |  a     |  a   | not present in any tree, skip
 
1939
        #   a    |  r     |      | not present in either tree at this path, skip as it
 
1940
        #        |        |      | may not be selected by the users list of paths.
 
1941
        #   a    |  r     |  a   | not present in either tree at this path, skip as it
 
1942
        #        |        |      | may not be selected by the users list of paths.
 
1943
        #  fdlt  | fdlt   |      | content in both: diff them
 
1944
        #  fdlt  | fdlt   |  a   | deleted locally, but not unversioned - show as deleted ?
 
1945
        #  fdlt  |  a     |      | unversioned: output deleted id for now
 
1946
        #  fdlt  |  a     |  a   | unversioned and deleted: output deleted id
 
1947
        #  fdlt  |  r     |      | relocated in this tree, so add target to search.
 
1948
        #        |        |      | Dont diff, we will see an r,fd; pair when we reach
 
1949
        #        |        |      | this id at the other path.
 
1950
        #  fdlt  |  r     |  a   | relocated in this tree, so add target to search.
 
1951
        #        |        |      | Dont diff, we will see an r,fd; pair when we reach
 
1952
        #        |        |      | this id at the other path.
 
1953
 
 
1954
        # for all search_indexs in each path at or under each element of
 
1955
        # search_specific_files, if the detail is relocated: add the id, and add the
 
1956
        # relocated path as one to search if its not searched already. If the
 
1957
        # detail is not relocated, add the id.
 
1958
        searched_specific_files = set()
 
1959
        NULL_PARENT_DETAILS = dirstate.DirState.NULL_PARENT_DETAILS
 
1960
        # Using a list so that we can access the values and change them in
 
1961
        # nested scope. Each one is [path, file_id, entry]
 
1962
        last_source_parent = [None, None]
 
1963
        last_target_parent = [None, None]
2107
1964
 
2108
1965
        use_filesystem_for_exec = (sys.platform != 'win32')
2109
 
        iter_changes = self.target._iter_changes(include_unchanged,
2110
 
            use_filesystem_for_exec, search_specific_files, state,
2111
 
            source_index, target_index, want_unversioned, self.target)
2112
 
        return iter_changes.iter_changes()
 
1966
 
 
1967
        # Just a sentry, so that _process_entry can say that this
 
1968
        # record is handled, but isn't interesting to process (unchanged)
 
1969
        uninteresting = object()
 
1970
 
 
1971
 
 
1972
        old_dirname_to_file_id = {}
 
1973
        new_dirname_to_file_id = {}
 
1974
        # TODO: jam 20070516 - Avoid the _get_entry lookup overhead by
 
1975
        #       keeping a cache of directories that we have seen.
 
1976
 
 
1977
        def _process_entry(entry, path_info):
 
1978
            """Compare an entry and real disk to generate delta information.
 
1979
 
 
1980
            :param path_info: top_relpath, basename, kind, lstat, abspath for
 
1981
                the path of entry. If None, then the path is considered absent.
 
1982
                (Perhaps we should pass in a concrete entry for this ?)
 
1983
                Basename is returned as a utf8 string because we expect this
 
1984
                tuple will be ignored, and don't want to take the time to
 
1985
                decode.
 
1986
            :return: None if these don't match
 
1987
                     A tuple of information about the change, or
 
1988
                     the object 'uninteresting' if these match, but are
 
1989
                     basically identical.
 
1990
            """
 
1991
            if source_index is None:
 
1992
                source_details = NULL_PARENT_DETAILS
 
1993
            else:
 
1994
                source_details = entry[1][source_index]
 
1995
            target_details = entry[1][target_index]
 
1996
            target_minikind = target_details[0]
 
1997
            if path_info is not None and target_minikind in 'fdlt':
 
1998
                if not (target_index == 0):
 
1999
                    raise AssertionError()
 
2000
                link_or_sha1 = state.update_entry(entry, abspath=path_info[4],
 
2001
                                                  stat_value=path_info[3])
 
2002
                # The entry may have been modified by update_entry
 
2003
                target_details = entry[1][target_index]
 
2004
                target_minikind = target_details[0]
 
2005
            else:
 
2006
                link_or_sha1 = None
 
2007
            file_id = entry[0][2]
 
2008
            source_minikind = source_details[0]
 
2009
            if source_minikind in 'fdltr' and target_minikind in 'fdlt':
 
2010
                # claimed content in both: diff
 
2011
                #   r    | fdlt   |      | add source to search, add id path move and perform
 
2012
                #        |        |      | diff check on source-target
 
2013
                #   r    | fdlt   |  a   | dangling file that was present in the basis.
 
2014
                #        |        |      | ???
 
2015
                if source_minikind in 'r':
 
2016
                    # add the source to the search path to find any children it
 
2017
                    # has.  TODO ? : only add if it is a container ?
 
2018
                    if not osutils.is_inside_any(searched_specific_files,
 
2019
                                                 source_details[1]):
 
2020
                        search_specific_files.add(source_details[1])
 
2021
                    # generate the old path; this is needed for stating later
 
2022
                    # as well.
 
2023
                    old_path = source_details[1]
 
2024
                    old_dirname, old_basename = os.path.split(old_path)
 
2025
                    path = pathjoin(entry[0][0], entry[0][1])
 
2026
                    old_entry = state._get_entry(source_index,
 
2027
                                                 path_utf8=old_path)
 
2028
                    # update the source details variable to be the real
 
2029
                    # location.
 
2030
                    if old_entry == (None, None):
 
2031
                        raise errors.CorruptDirstate(state._filename,
 
2032
                            "entry '%s/%s' is considered renamed from %r"
 
2033
                            " but source does not exist\n"
 
2034
                            "entry: %s" % (entry[0][0], entry[0][1], old_path, entry))
 
2035
                    source_details = old_entry[1][source_index]
 
2036
                    source_minikind = source_details[0]
 
2037
                else:
 
2038
                    old_dirname = entry[0][0]
 
2039
                    old_basename = entry[0][1]
 
2040
                    old_path = path = None
 
2041
                if path_info is None:
 
2042
                    # the file is missing on disk, show as removed.
 
2043
                    content_change = True
 
2044
                    target_kind = None
 
2045
                    target_exec = False
 
2046
                else:
 
2047
                    # source and target are both versioned and disk file is present.
 
2048
                    target_kind = path_info[2]
 
2049
                    if target_kind == 'directory':
 
2050
                        if path is None:
 
2051
                            old_path = path = pathjoin(old_dirname, old_basename)
 
2052
                        new_dirname_to_file_id[path] = file_id
 
2053
                        if source_minikind != 'd':
 
2054
                            content_change = True
 
2055
                        else:
 
2056
                            # directories have no fingerprint
 
2057
                            content_change = False
 
2058
                        target_exec = False
 
2059
                    elif target_kind == 'file':
 
2060
                        if source_minikind != 'f':
 
2061
                            content_change = True
 
2062
                        else:
 
2063
                            # We could check the size, but we already have the
 
2064
                            # sha1 hash.
 
2065
                            content_change = (link_or_sha1 != source_details[1])
 
2066
                        # Target details is updated at update_entry time
 
2067
                        if use_filesystem_for_exec:
 
2068
                            # We don't need S_ISREG here, because we are sure
 
2069
                            # we are dealing with a file.
 
2070
                            target_exec = bool(stat.S_IEXEC & path_info[3].st_mode)
 
2071
                        else:
 
2072
                            target_exec = target_details[3]
 
2073
                    elif target_kind == 'symlink':
 
2074
                        if source_minikind != 'l':
 
2075
                            content_change = True
 
2076
                        else:
 
2077
                            content_change = (link_or_sha1 != source_details[1])
 
2078
                        target_exec = False
 
2079
                    elif target_kind == 'tree-reference':
 
2080
                        if source_minikind != 't':
 
2081
                            content_change = True
 
2082
                        else:
 
2083
                            content_change = False
 
2084
                        target_exec = False
 
2085
                    else:
 
2086
                        raise Exception, "unknown kind %s" % path_info[2]
 
2087
                if source_minikind == 'd':
 
2088
                    if path is None:
 
2089
                        old_path = path = pathjoin(old_dirname, old_basename)
 
2090
                    old_dirname_to_file_id[old_path] = file_id
 
2091
                # parent id is the entry for the path in the target tree
 
2092
                if old_dirname == last_source_parent[0]:
 
2093
                    source_parent_id = last_source_parent[1]
 
2094
                else:
 
2095
                    try:
 
2096
                        source_parent_id = old_dirname_to_file_id[old_dirname]
 
2097
                    except KeyError:
 
2098
                        source_parent_entry = state._get_entry(source_index,
 
2099
                                                               path_utf8=old_dirname)
 
2100
                        source_parent_id = source_parent_entry[0][2]
 
2101
                    if source_parent_id == entry[0][2]:
 
2102
                        # This is the root, so the parent is None
 
2103
                        source_parent_id = None
 
2104
                    else:
 
2105
                        last_source_parent[0] = old_dirname
 
2106
                        last_source_parent[1] = source_parent_id
 
2107
                new_dirname = entry[0][0]
 
2108
                if new_dirname == last_target_parent[0]:
 
2109
                    target_parent_id = last_target_parent[1]
 
2110
                else:
 
2111
                    try:
 
2112
                        target_parent_id = new_dirname_to_file_id[new_dirname]
 
2113
                    except KeyError:
 
2114
                        # TODO: We don't always need to do the lookup, because the
 
2115
                        #       parent entry will be the same as the source entry.
 
2116
                        target_parent_entry = state._get_entry(target_index,
 
2117
                                                               path_utf8=new_dirname)
 
2118
                        if target_parent_entry == (None, None):
 
2119
                            raise AssertionError(
 
2120
                                "Could not find target parent in wt: %s\nparent of: %s"
 
2121
                                % (new_dirname, entry))
 
2122
                        target_parent_id = target_parent_entry[0][2]
 
2123
                    if target_parent_id == entry[0][2]:
 
2124
                        # This is the root, so the parent is None
 
2125
                        target_parent_id = None
 
2126
                    else:
 
2127
                        last_target_parent[0] = new_dirname
 
2128
                        last_target_parent[1] = target_parent_id
 
2129
 
 
2130
                source_exec = source_details[3]
 
2131
                if (include_unchanged
 
2132
                    or content_change
 
2133
                    or source_parent_id != target_parent_id
 
2134
                    or old_basename != entry[0][1]
 
2135
                    or source_exec != target_exec
 
2136
                    ):
 
2137
                    if old_path is None:
 
2138
                        old_path = path = pathjoin(old_dirname, old_basename)
 
2139
                        old_path_u = utf8_decode(old_path)[0]
 
2140
                        path_u = old_path_u
 
2141
                    else:
 
2142
                        old_path_u = utf8_decode(old_path)[0]
 
2143
                        if old_path == path:
 
2144
                            path_u = old_path_u
 
2145
                        else:
 
2146
                            path_u = utf8_decode(path)[0]
 
2147
                    source_kind = _minikind_to_kind[source_minikind]
 
2148
                    return (entry[0][2],
 
2149
                           (old_path_u, path_u),
 
2150
                           content_change,
 
2151
                           (True, True),
 
2152
                           (source_parent_id, target_parent_id),
 
2153
                           (utf8_decode(old_basename)[0], utf8_decode(entry[0][1])[0]),
 
2154
                           (source_kind, target_kind),
 
2155
                           (source_exec, target_exec))
 
2156
                else:
 
2157
                    return uninteresting
 
2158
            elif source_minikind in 'a' and target_minikind in 'fdlt':
 
2159
                # looks like a new file
 
2160
                if path_info is not None:
 
2161
                    path = pathjoin(entry[0][0], entry[0][1])
 
2162
                    # parent id is the entry for the path in the target tree
 
2163
                    # TODO: these are the same for an entire directory: cache em.
 
2164
                    parent_id = state._get_entry(target_index,
 
2165
                                                 path_utf8=entry[0][0])[0][2]
 
2166
                    if parent_id == entry[0][2]:
 
2167
                        parent_id = None
 
2168
                    if use_filesystem_for_exec:
 
2169
                        # We need S_ISREG here, because we aren't sure if this
 
2170
                        # is a file or not.
 
2171
                        target_exec = bool(
 
2172
                            stat.S_ISREG(path_info[3].st_mode)
 
2173
                            and stat.S_IEXEC & path_info[3].st_mode)
 
2174
                    else:
 
2175
                        target_exec = target_details[3]
 
2176
                    return (entry[0][2],
 
2177
                           (None, utf8_decode(path)[0]),
 
2178
                           True,
 
2179
                           (False, True),
 
2180
                           (None, parent_id),
 
2181
                           (None, utf8_decode(entry[0][1])[0]),
 
2182
                           (None, path_info[2]),
 
2183
                           (None, target_exec))
 
2184
                else:
 
2185
                    # but its not on disk: we deliberately treat this as just
 
2186
                    # never-present. (Why ?! - RBC 20070224)
 
2187
                    pass
 
2188
            elif source_minikind in 'fdlt' and target_minikind in 'a':
 
2189
                # unversioned, possibly, or possibly not deleted: we dont care.
 
2190
                # if its still on disk, *and* theres no other entry at this
 
2191
                # path [we dont know this in this routine at the moment -
 
2192
                # perhaps we should change this - then it would be an unknown.
 
2193
                old_path = pathjoin(entry[0][0], entry[0][1])
 
2194
                # parent id is the entry for the path in the target tree
 
2195
                parent_id = state._get_entry(source_index, path_utf8=entry[0][0])[0][2]
 
2196
                if parent_id == entry[0][2]:
 
2197
                    parent_id = None
 
2198
                return (entry[0][2],
 
2199
                       (utf8_decode(old_path)[0], None),
 
2200
                       True,
 
2201
                       (True, False),
 
2202
                       (parent_id, None),
 
2203
                       (utf8_decode(entry[0][1])[0], None),
 
2204
                       (_minikind_to_kind[source_minikind], None),
 
2205
                       (source_details[3], None))
 
2206
            elif source_minikind in 'fdlt' and target_minikind in 'r':
 
2207
                # a rename; could be a true rename, or a rename inherited from
 
2208
                # a renamed parent. TODO: handle this efficiently. Its not
 
2209
                # common case to rename dirs though, so a correct but slow
 
2210
                # implementation will do.
 
2211
                if not osutils.is_inside_any(searched_specific_files, target_details[1]):
 
2212
                    search_specific_files.add(target_details[1])
 
2213
            elif source_minikind in 'ra' and target_minikind in 'ra':
 
2214
                # neither of the selected trees contain this file,
 
2215
                # so skip over it. This is not currently directly tested, but
 
2216
                # is indirectly via test_too_much.TestCommands.test_conflicts.
 
2217
                pass
 
2218
            else:
 
2219
                raise AssertionError("don't know how to compare "
 
2220
                    "source_minikind=%r, target_minikind=%r"
 
2221
                    % (source_minikind, target_minikind))
 
2222
                ## import pdb;pdb.set_trace()
 
2223
            return None
 
2224
 
 
2225
        while search_specific_files:
 
2226
            # TODO: the pending list should be lexically sorted?  the
 
2227
            # interface doesn't require it.
 
2228
            current_root = search_specific_files.pop()
 
2229
            current_root_unicode = current_root.decode('utf8')
 
2230
            searched_specific_files.add(current_root)
 
2231
            # process the entries for this containing directory: the rest will be
 
2232
            # found by their parents recursively.
 
2233
            root_entries = _entries_for_path(current_root)
 
2234
            root_abspath = self.target.abspath(current_root_unicode)
 
2235
            try:
 
2236
                root_stat = os.lstat(root_abspath)
 
2237
            except OSError, e:
 
2238
                if e.errno == errno.ENOENT:
 
2239
                    # the path does not exist: let _process_entry know that.
 
2240
                    root_dir_info = None
 
2241
                else:
 
2242
                    # some other random error: hand it up.
 
2243
                    raise
 
2244
            else:
 
2245
                root_dir_info = ('', current_root,
 
2246
                    osutils.file_kind_from_stat_mode(root_stat.st_mode), root_stat,
 
2247
                    root_abspath)
 
2248
                if root_dir_info[2] == 'directory':
 
2249
                    if self.target._directory_is_tree_reference(
 
2250
                        current_root.decode('utf8')):
 
2251
                        root_dir_info = root_dir_info[:2] + \
 
2252
                            ('tree-reference',) + root_dir_info[3:]
 
2253
 
 
2254
            if not root_entries and not root_dir_info:
 
2255
                # this specified path is not present at all, skip it.
 
2256
                continue
 
2257
            path_handled = False
 
2258
            for entry in root_entries:
 
2259
                result = _process_entry(entry, root_dir_info)
 
2260
                if result is not None:
 
2261
                    path_handled = True
 
2262
                    if result is not uninteresting:
 
2263
                        yield result
 
2264
            if want_unversioned and not path_handled and root_dir_info:
 
2265
                new_executable = bool(
 
2266
                    stat.S_ISREG(root_dir_info[3].st_mode)
 
2267
                    and stat.S_IEXEC & root_dir_info[3].st_mode)
 
2268
                yield (None,
 
2269
                       (None, current_root_unicode),
 
2270
                       True,
 
2271
                       (False, False),
 
2272
                       (None, None),
 
2273
                       (None, splitpath(current_root_unicode)[-1]),
 
2274
                       (None, root_dir_info[2]),
 
2275
                       (None, new_executable)
 
2276
                      )
 
2277
            initial_key = (current_root, '', '')
 
2278
            block_index, _ = state._find_block_index_from_key(initial_key)
 
2279
            if block_index == 0:
 
2280
                # we have processed the total root already, but because the
 
2281
                # initial key matched it we should skip it here.
 
2282
                block_index +=1
 
2283
            if root_dir_info and root_dir_info[2] == 'tree-reference':
 
2284
                current_dir_info = None
 
2285
            else:
 
2286
                dir_iterator = osutils._walkdirs_utf8(root_abspath, prefix=current_root)
 
2287
                try:
 
2288
                    current_dir_info = dir_iterator.next()
 
2289
                except OSError, e:
 
2290
                    # on win32, python2.4 has e.errno == ERROR_DIRECTORY, but
 
2291
                    # python 2.5 has e.errno == EINVAL,
 
2292
                    #            and e.winerror == ERROR_DIRECTORY
 
2293
                    e_winerror = getattr(e, 'winerror', None)
 
2294
                    win_errors = (ERROR_DIRECTORY, ERROR_PATH_NOT_FOUND)
 
2295
                    # there may be directories in the inventory even though
 
2296
                    # this path is not a file on disk: so mark it as end of
 
2297
                    # iterator
 
2298
                    if e.errno in (errno.ENOENT, errno.ENOTDIR, errno.EINVAL):
 
2299
                        current_dir_info = None
 
2300
                    elif (sys.platform == 'win32'
 
2301
                          and (e.errno in win_errors
 
2302
                               or e_winerror in win_errors)):
 
2303
                        current_dir_info = None
 
2304
                    else:
 
2305
                        raise
 
2306
                else:
 
2307
                    if current_dir_info[0][0] == '':
 
2308
                        # remove .bzr from iteration
 
2309
                        bzr_index = bisect_left(current_dir_info[1], ('.bzr',))
 
2310
                        if current_dir_info[1][bzr_index][0] != '.bzr':
 
2311
                            raise AssertionError()
 
2312
                        del current_dir_info[1][bzr_index]
 
2313
            # walk until both the directory listing and the versioned metadata
 
2314
            # are exhausted. 
 
2315
            if (block_index < len(state._dirblocks) and
 
2316
                osutils.is_inside(current_root, state._dirblocks[block_index][0])):
 
2317
                current_block = state._dirblocks[block_index]
 
2318
            else:
 
2319
                current_block = None
 
2320
            while (current_dir_info is not None or
 
2321
                   current_block is not None):
 
2322
                if (current_dir_info and current_block
 
2323
                    and current_dir_info[0][0] != current_block[0]):
 
2324
                    if cmp_by_dirs(current_dir_info[0][0], current_block[0]) < 0:
 
2325
                        # filesystem data refers to paths not covered by the dirblock.
 
2326
                        # this has two possibilities:
 
2327
                        # A) it is versioned but empty, so there is no block for it
 
2328
                        # B) it is not versioned.
 
2329
 
 
2330
                        # if (A) then we need to recurse into it to check for
 
2331
                        # new unknown files or directories.
 
2332
                        # if (B) then we should ignore it, because we don't
 
2333
                        # recurse into unknown directories.
 
2334
                        path_index = 0
 
2335
                        while path_index < len(current_dir_info[1]):
 
2336
                                current_path_info = current_dir_info[1][path_index]
 
2337
                                if want_unversioned:
 
2338
                                    if current_path_info[2] == 'directory':
 
2339
                                        if self.target._directory_is_tree_reference(
 
2340
                                            current_path_info[0].decode('utf8')):
 
2341
                                            current_path_info = current_path_info[:2] + \
 
2342
                                                ('tree-reference',) + current_path_info[3:]
 
2343
                                    new_executable = bool(
 
2344
                                        stat.S_ISREG(current_path_info[3].st_mode)
 
2345
                                        and stat.S_IEXEC & current_path_info[3].st_mode)
 
2346
                                    yield (None,
 
2347
                                        (None, utf8_decode(current_path_info[0])[0]),
 
2348
                                        True,
 
2349
                                        (False, False),
 
2350
                                        (None, None),
 
2351
                                        (None, utf8_decode(current_path_info[1])[0]),
 
2352
                                        (None, current_path_info[2]),
 
2353
                                        (None, new_executable))
 
2354
                                # dont descend into this unversioned path if it is
 
2355
                                # a dir
 
2356
                                if current_path_info[2] in ('directory',
 
2357
                                                            'tree-reference'):
 
2358
                                    del current_dir_info[1][path_index]
 
2359
                                    path_index -= 1
 
2360
                                path_index += 1
 
2361
 
 
2362
                        # This dir info has been handled, go to the next
 
2363
                        try:
 
2364
                            current_dir_info = dir_iterator.next()
 
2365
                        except StopIteration:
 
2366
                            current_dir_info = None
 
2367
                    else:
 
2368
                        # We have a dirblock entry for this location, but there
 
2369
                        # is no filesystem path for this. This is most likely
 
2370
                        # because a directory was removed from the disk.
 
2371
                        # We don't have to report the missing directory,
 
2372
                        # because that should have already been handled, but we
 
2373
                        # need to handle all of the files that are contained
 
2374
                        # within.
 
2375
                        for current_entry in current_block[1]:
 
2376
                            # entry referring to file not present on disk.
 
2377
                            # advance the entry only, after processing.
 
2378
                            result = _process_entry(current_entry, None)
 
2379
                            if result is not None:
 
2380
                                if result is not uninteresting:
 
2381
                                    yield result
 
2382
                        block_index +=1
 
2383
                        if (block_index < len(state._dirblocks) and
 
2384
                            osutils.is_inside(current_root,
 
2385
                                              state._dirblocks[block_index][0])):
 
2386
                            current_block = state._dirblocks[block_index]
 
2387
                        else:
 
2388
                            current_block = None
 
2389
                    continue
 
2390
                entry_index = 0
 
2391
                if current_block and entry_index < len(current_block[1]):
 
2392
                    current_entry = current_block[1][entry_index]
 
2393
                else:
 
2394
                    current_entry = None
 
2395
                advance_entry = True
 
2396
                path_index = 0
 
2397
                if current_dir_info and path_index < len(current_dir_info[1]):
 
2398
                    current_path_info = current_dir_info[1][path_index]
 
2399
                    if current_path_info[2] == 'directory':
 
2400
                        if self.target._directory_is_tree_reference(
 
2401
                            current_path_info[0].decode('utf8')):
 
2402
                            current_path_info = current_path_info[:2] + \
 
2403
                                ('tree-reference',) + current_path_info[3:]
 
2404
                else:
 
2405
                    current_path_info = None
 
2406
                advance_path = True
 
2407
                path_handled = False
 
2408
                while (current_entry is not None or
 
2409
                    current_path_info is not None):
 
2410
                    if current_entry is None:
 
2411
                        # the check for path_handled when the path is adnvaced
 
2412
                        # will yield this path if needed.
 
2413
                        pass
 
2414
                    elif current_path_info is None:
 
2415
                        # no path is fine: the per entry code will handle it.
 
2416
                        result = _process_entry(current_entry, current_path_info)
 
2417
                        if result is not None:
 
2418
                            if result is not uninteresting:
 
2419
                                yield result
 
2420
                    elif (current_entry[0][1] != current_path_info[1]
 
2421
                          or current_entry[1][target_index][0] in 'ar'):
 
2422
                        # The current path on disk doesn't match the dirblock
 
2423
                        # record. Either the dirblock is marked as absent, or
 
2424
                        # the file on disk is not present at all in the
 
2425
                        # dirblock. Either way, report about the dirblock
 
2426
                        # entry, and let other code handle the filesystem one.
 
2427
 
 
2428
                        # Compare the basename for these files to determine
 
2429
                        # which comes first
 
2430
                        if current_path_info[1] < current_entry[0][1]:
 
2431
                            # extra file on disk: pass for now, but only
 
2432
                            # increment the path, not the entry
 
2433
                            advance_entry = False
 
2434
                        else:
 
2435
                            # entry referring to file not present on disk.
 
2436
                            # advance the entry only, after processing.
 
2437
                            result = _process_entry(current_entry, None)
 
2438
                            if result is not None:
 
2439
                                if result is not uninteresting:
 
2440
                                    yield result
 
2441
                            advance_path = False
 
2442
                    else:
 
2443
                        result = _process_entry(current_entry, current_path_info)
 
2444
                        if result is not None:
 
2445
                            path_handled = True
 
2446
                            if result is not uninteresting:
 
2447
                                yield result
 
2448
                    if advance_entry and current_entry is not None:
 
2449
                        entry_index += 1
 
2450
                        if entry_index < len(current_block[1]):
 
2451
                            current_entry = current_block[1][entry_index]
 
2452
                        else:
 
2453
                            current_entry = None
 
2454
                    else:
 
2455
                        advance_entry = True # reset the advance flaga
 
2456
                    if advance_path and current_path_info is not None:
 
2457
                        if not path_handled:
 
2458
                            # unversioned in all regards
 
2459
                            if want_unversioned:
 
2460
                                new_executable = bool(
 
2461
                                    stat.S_ISREG(current_path_info[3].st_mode)
 
2462
                                    and stat.S_IEXEC & current_path_info[3].st_mode)
 
2463
                                try:
 
2464
                                    relpath_unicode = utf8_decode(current_path_info[0])[0]
 
2465
                                except UnicodeDecodeError:
 
2466
                                    raise errors.BadFilenameEncoding(
 
2467
                                        current_path_info[0], osutils._fs_enc)
 
2468
                                yield (None,
 
2469
                                    (None, relpath_unicode),
 
2470
                                    True,
 
2471
                                    (False, False),
 
2472
                                    (None, None),
 
2473
                                    (None, utf8_decode(current_path_info[1])[0]),
 
2474
                                    (None, current_path_info[2]),
 
2475
                                    (None, new_executable))
 
2476
                            # dont descend into this unversioned path if it is
 
2477
                            # a dir
 
2478
                            if current_path_info[2] in ('directory'):
 
2479
                                del current_dir_info[1][path_index]
 
2480
                                path_index -= 1
 
2481
                        # dont descend the disk iterator into any tree 
 
2482
                        # paths.
 
2483
                        if current_path_info[2] == 'tree-reference':
 
2484
                            del current_dir_info[1][path_index]
 
2485
                            path_index -= 1
 
2486
                        path_index += 1
 
2487
                        if path_index < len(current_dir_info[1]):
 
2488
                            current_path_info = current_dir_info[1][path_index]
 
2489
                            if current_path_info[2] == 'directory':
 
2490
                                if self.target._directory_is_tree_reference(
 
2491
                                    current_path_info[0].decode('utf8')):
 
2492
                                    current_path_info = current_path_info[:2] + \
 
2493
                                        ('tree-reference',) + current_path_info[3:]
 
2494
                        else:
 
2495
                            current_path_info = None
 
2496
                        path_handled = False
 
2497
                    else:
 
2498
                        advance_path = True # reset the advance flagg.
 
2499
                if current_block is not None:
 
2500
                    block_index += 1
 
2501
                    if (block_index < len(state._dirblocks) and
 
2502
                        osutils.is_inside(current_root, state._dirblocks[block_index][0])):
 
2503
                        current_block = state._dirblocks[block_index]
 
2504
                    else:
 
2505
                        current_block = None
 
2506
                if current_dir_info is not None:
 
2507
                    try:
 
2508
                        current_dir_info = dir_iterator.next()
 
2509
                    except StopIteration:
 
2510
                        current_dir_info = None
 
2511
 
2113
2512
 
2114
2513
    @staticmethod
2115
2514
    def is_compatible(source, target):
2116
2515
        # the target must be a dirstate working tree
2117
 
        if not isinstance(target, DirStateWorkingTree):
 
2516
        if not isinstance(target, WorkingTree4):
2118
2517
            return False
2119
 
        # the source must be a revtree or dirstate rev tree.
 
2518
        # the source must be a revtreee or dirstate rev tree.
2120
2519
        if not isinstance(source,
2121
2520
            (revisiontree.RevisionTree, DirStateRevisionTree)):
2122
2521
            return False
2123
2522
        # the source revid must be in the target dirstate
2124
 
        if not (source._revision_id == _mod_revision.NULL_REVISION or
 
2523
        if not (source._revision_id == NULL_REVISION or
2125
2524
            source._revision_id in target.get_parent_ids()):
2126
 
            # TODO: what about ghosts? it may well need to
 
2525
            # TODO: what about ghosts? it may well need to 
2127
2526
            # check for them explicitly.
2128
2527
            return False
2129
2528
        return True
2139
2538
 
2140
2539
    def convert(self, tree):
2141
2540
        # lock the control files not the tree, so that we dont get tree
2142
 
        # on-unlock behaviours, and so that noone else diddles with the
 
2541
        # on-unlock behaviours, and so that noone else diddles with the 
2143
2542
        # tree during upgrade.
2144
2543
        tree._control_files.lock_write()
2145
2544
        try:
2174
2573
        tree._transport.put_bytes('format',
2175
2574
            self.target_format.get_format_string(),
2176
2575
            mode=tree.bzrdir._get_file_mode())
2177
 
 
2178
 
 
2179
 
class Converter4to5(object):
2180
 
    """Perform an in-place upgrade of format 4 to format 5 trees."""
2181
 
 
2182
 
    def __init__(self):
2183
 
        self.target_format = WorkingTreeFormat5()
2184
 
 
2185
 
    def convert(self, tree):
2186
 
        # lock the control files not the tree, so that we don't get tree
2187
 
        # on-unlock behaviours, and so that no-one else diddles with the
2188
 
        # tree during upgrade.
2189
 
        tree._control_files.lock_write()
2190
 
        try:
2191
 
            self.update_format(tree)
2192
 
        finally:
2193
 
            tree._control_files.unlock()
2194
 
 
2195
 
    def update_format(self, tree):
2196
 
        """Change the format marker."""
2197
 
        tree._transport.put_bytes('format',
2198
 
            self.target_format.get_format_string(),
2199
 
            mode=tree.bzrdir._get_file_mode())
2200
 
 
2201
 
 
2202
 
class Converter4or5to6(object):
2203
 
    """Perform an in-place upgrade of format 4 or 5 to format 6 trees."""
2204
 
 
2205
 
    def __init__(self):
2206
 
        self.target_format = WorkingTreeFormat6()
2207
 
 
2208
 
    def convert(self, tree):
2209
 
        # lock the control files not the tree, so that we don't get tree
2210
 
        # on-unlock behaviours, and so that no-one else diddles with the
2211
 
        # tree during upgrade.
2212
 
        tree._control_files.lock_write()
2213
 
        try:
2214
 
            self.init_custom_control_files(tree)
2215
 
            self.update_format(tree)
2216
 
        finally:
2217
 
            tree._control_files.unlock()
2218
 
 
2219
 
    def init_custom_control_files(self, tree):
2220
 
        """Initialize custom control files."""
2221
 
        tree._transport.put_bytes('views', '',
2222
 
            mode=tree.bzrdir._get_file_mode())
2223
 
 
2224
 
    def update_format(self, tree):
2225
 
        """Change the format marker."""
2226
 
        tree._transport.put_bytes('format',
2227
 
            self.target_format.get_format_string(),
2228
 
            mode=tree.bzrdir._get_file_mode())