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Viewing changes to breezy/git/workingtree.py

  • Committer: Jelmer Vernooij
  • Date: 2018-08-14 01:15:02 UTC
  • mto: This revision was merged to the branch mainline in revision 7078.
  • Revision ID: jelmer@jelmer.uk-20180814011502-5zaydaq02vc2qxo1
Fix tests.

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Lines of Context:
 
1
# Copyright (C) 2008-2018 Jelmer Vernooij <jelmer@jelmer.uk>
 
2
#
 
3
# This program is free software; you can redistribute it and/or modify
 
4
# it under the terms of the GNU General Public License as published by
 
5
# the Free Software Foundation; either version 2 of the License, or
 
6
# (at your option) any later version.
 
7
#
 
8
# This program is distributed in the hope that it will be useful,
 
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
11
# GNU General Public License for more details.
 
12
#
 
13
# You should have received a copy of the GNU General Public License
 
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
 
16
 
 
17
 
 
18
"""An adapter between a Git index and a Bazaar Working Tree"""
 
19
 
 
20
from __future__ import absolute_import
 
21
 
 
22
import itertools
 
23
from collections import defaultdict
 
24
import errno
 
25
from dulwich.ignore import (
 
26
    IgnoreFilterManager,
 
27
    )
 
28
from dulwich.file import GitFile, FileLocked
 
29
from dulwich.index import (
 
30
    Index,
 
31
    SHA1Writer,
 
32
    build_index_from_tree,
 
33
    changes_from_tree,
 
34
    index_entry_from_path,
 
35
    index_entry_from_stat,
 
36
    iter_fresh_entries,
 
37
    FLAG_STAGEMASK,
 
38
    read_submodule_head,
 
39
    validate_path,
 
40
    write_index_dict,
 
41
    )
 
42
from dulwich.object_store import (
 
43
    tree_lookup_path,
 
44
    )
 
45
from dulwich.objects import (
 
46
    Blob,
 
47
    Tree,
 
48
    S_IFGITLINK,
 
49
    S_ISGITLINK,
 
50
    ZERO_SHA,
 
51
    )
 
52
from dulwich.repo import (
 
53
    NotGitRepository,
 
54
    Repo as GitRepo,
 
55
    )
 
56
import os
 
57
import posixpath
 
58
import re
 
59
import stat
 
60
import sys
 
61
 
 
62
from .. import (
 
63
    conflicts as _mod_conflicts,
 
64
    errors,
 
65
    controldir as _mod_controldir,
 
66
    globbing,
 
67
    ignores,
 
68
    lock,
 
69
    merge,
 
70
    osutils,
 
71
    revision as _mod_revision,
 
72
    trace,
 
73
    transport as _mod_transport,
 
74
    tree,
 
75
    workingtree,
 
76
    )
 
77
from ..decorators import (
 
78
    only_raises,
 
79
    )
 
80
from ..bzr import (
 
81
    inventory,
 
82
    )
 
83
from ..mutabletree import (
 
84
    BadReferenceTarget,
 
85
    MutableTree,
 
86
    )
 
87
 
 
88
 
 
89
from .dir import (
 
90
    LocalGitDir,
 
91
    )
 
92
from .tree import (
 
93
    MutableGitIndexTree,
 
94
    )
 
95
from .mapping import (
 
96
    GitFileIdMap,
 
97
    mode_kind,
 
98
    )
 
99
 
 
100
IGNORE_FILENAME = ".gitignore"
 
101
 
 
102
 
 
103
class GitWorkingTree(MutableGitIndexTree,workingtree.WorkingTree):
 
104
    """A Git working tree."""
 
105
 
 
106
    def __init__(self, controldir, repo, branch):
 
107
        MutableGitIndexTree.__init__(self)
 
108
        basedir = controldir.root_transport.local_abspath('.')
 
109
        self.basedir = osutils.realpath(basedir)
 
110
        self.controldir = controldir
 
111
        self.repository = repo
 
112
        self.store = self.repository._git.object_store
 
113
        self.mapping = self.repository.get_mapping()
 
114
        self._branch = branch
 
115
        self._transport = controldir.transport
 
116
        self._format = GitWorkingTreeFormat()
 
117
        self.index = None
 
118
        self._index_file = None
 
119
        self.views = self._make_views()
 
120
        self._rules_searcher = None
 
121
        self._detect_case_handling()
 
122
        self._reset_data()
 
123
 
 
124
    def supports_tree_reference(self):
 
125
        return True
 
126
 
 
127
    def supports_rename_tracking(self):
 
128
        return False
 
129
 
 
130
    def _read_index(self):
 
131
        self.index = Index(self.control_transport.local_abspath('index'))
 
132
        self._index_dirty = False
 
133
 
 
134
    def lock_read(self):
 
135
        """Lock the repository for read operations.
 
136
 
 
137
        :return: A breezy.lock.LogicalLockResult.
 
138
        """
 
139
        if not self._lock_mode:
 
140
            self._lock_mode = 'r'
 
141
            self._lock_count = 1
 
142
            self._read_index()
 
143
        else:
 
144
            self._lock_count += 1
 
145
        self.branch.lock_read()
 
146
        return lock.LogicalLockResult(self.unlock)
 
147
 
 
148
    def _lock_write_tree(self):
 
149
        # TODO(jelmer): Actually create index.lock
 
150
        if not self._lock_mode:
 
151
            self._lock_mode = 'w'
 
152
            self._lock_count = 1
 
153
            try:
 
154
                self._index_file = GitFile(self.control_transport.local_abspath('index'), 'wb')
 
155
            except FileLocked:
 
156
                raise errors.LockContention('index')
 
157
            self._read_index()
 
158
        elif self._lock_mode == 'r':
 
159
            raise errors.ReadOnlyError(self)
 
160
        else:
 
161
            self._lock_count +=1
 
162
 
 
163
    def lock_tree_write(self):
 
164
        self.branch.lock_read()
 
165
        try:
 
166
            self._lock_write_tree()
 
167
            return lock.LogicalLockResult(self.unlock)
 
168
        except:
 
169
            self.branch.unlock()
 
170
            raise
 
171
 
 
172
    def lock_write(self, token=None):
 
173
        self.branch.lock_write()
 
174
        try:
 
175
            self._lock_write_tree()
 
176
            return lock.LogicalLockResult(self.unlock)
 
177
        except:
 
178
            self.branch.unlock()
 
179
            raise
 
180
 
 
181
    def is_locked(self):
 
182
        return self._lock_count >= 1
 
183
 
 
184
    def get_physical_lock_status(self):
 
185
        return False
 
186
 
 
187
    def break_lock(self):
 
188
        try:
 
189
            self.control_transport.delete('index.lock')
 
190
        except errors.NoSuchFile:
 
191
            pass
 
192
        self.branch.break_lock()
 
193
 
 
194
    @only_raises(errors.LockNotHeld, errors.LockBroken)
 
195
    def unlock(self):
 
196
        if not self._lock_count:
 
197
            return lock.cant_unlock_not_held(self)
 
198
        try:
 
199
            self._cleanup()
 
200
            self._lock_count -= 1
 
201
            if self._lock_count > 0:
 
202
                return
 
203
            if self._index_file is not None:
 
204
                if self._index_dirty:
 
205
                    self._flush(self._index_file)
 
206
                    self._index_file.close()
 
207
                else:
 
208
                    # Somebody else already wrote the index file
 
209
                    # by calling .flush()
 
210
                    self._index_file.abort()
 
211
                self._index_file = None
 
212
            self._lock_mode = None
 
213
            self.index = None
 
214
        finally:
 
215
            self.branch.unlock()
 
216
 
 
217
    def _cleanup(self):
 
218
        pass
 
219
 
 
220
    def _detect_case_handling(self):
 
221
        try:
 
222
            self._transport.stat(".git/cOnFiG")
 
223
        except errors.NoSuchFile:
 
224
            self.case_sensitive = True
 
225
        else:
 
226
            self.case_sensitive = False
 
227
 
 
228
    def merge_modified(self):
 
229
        return {}
 
230
 
 
231
    def set_merge_modified(self, modified_hashes):
 
232
        raise errors.UnsupportedOperation(self.set_merge_modified, self)
 
233
 
 
234
    def set_parent_trees(self, parents_list, allow_leftmost_as_ghost=False):
 
235
        self.set_parent_ids([p for p, t in parents_list])
 
236
 
 
237
    def _set_merges_from_parent_ids(self, rhs_parent_ids):
 
238
        try:
 
239
            merges = [self.branch.lookup_bzr_revision_id(revid)[0] for revid in rhs_parent_ids]
 
240
        except errors.NoSuchRevision as e:
 
241
            raise errors.GhostRevisionUnusableHere(e.revision)
 
242
        if merges:
 
243
            self.control_transport.put_bytes('MERGE_HEAD', b'\n'.join(merges),
 
244
                mode=self.controldir._get_file_mode())
 
245
        else:
 
246
            try:
 
247
                self.control_transport.delete('MERGE_HEAD')
 
248
            except errors.NoSuchFile:
 
249
                pass
 
250
 
 
251
    def set_parent_ids(self, revision_ids, allow_leftmost_as_ghost=False):
 
252
        """Set the parent ids to revision_ids.
 
253
 
 
254
        See also set_parent_trees. This api will try to retrieve the tree data
 
255
        for each element of revision_ids from the trees repository. If you have
 
256
        tree data already available, it is more efficient to use
 
257
        set_parent_trees rather than set_parent_ids. set_parent_ids is however
 
258
        an easier API to use.
 
259
 
 
260
        :param revision_ids: The revision_ids to set as the parent ids of this
 
261
            working tree. Any of these may be ghosts.
 
262
        """
 
263
        with self.lock_tree_write():
 
264
            self._check_parents_for_ghosts(revision_ids,
 
265
                allow_leftmost_as_ghost=allow_leftmost_as_ghost)
 
266
            for revision_id in revision_ids:
 
267
                _mod_revision.check_not_reserved_id(revision_id)
 
268
 
 
269
            revision_ids = self._filter_parent_ids_by_ancestry(revision_ids)
 
270
 
 
271
            if len(revision_ids) > 0:
 
272
                self.set_last_revision(revision_ids[0])
 
273
            else:
 
274
                self.set_last_revision(_mod_revision.NULL_REVISION)
 
275
 
 
276
            self._set_merges_from_parent_ids(revision_ids[1:])
 
277
 
 
278
    def get_parent_ids(self):
 
279
        """See Tree.get_parent_ids.
 
280
 
 
281
        This implementation reads the pending merges list and last_revision
 
282
        value and uses that to decide what the parents list should be.
 
283
        """
 
284
        last_rev = _mod_revision.ensure_null(self._last_revision())
 
285
        if _mod_revision.NULL_REVISION == last_rev:
 
286
            parents = []
 
287
        else:
 
288
            parents = [last_rev]
 
289
        try:
 
290
            merges_bytes = self.control_transport.get_bytes('MERGE_HEAD')
 
291
        except errors.NoSuchFile:
 
292
            pass
 
293
        else:
 
294
            for l in osutils.split_lines(merges_bytes):
 
295
                revision_id = l.rstrip(b'\n')
 
296
                parents.append(self.branch.lookup_foreign_revision_id(revision_id))
 
297
        return parents
 
298
 
 
299
    def check_state(self):
 
300
        """Check that the working state is/isn't valid."""
 
301
        pass
 
302
 
 
303
    def remove(self, files, verbose=False, to_file=None, keep_files=True,
 
304
        force=False):
 
305
        """Remove nominated files from the working tree metadata.
 
306
 
 
307
        :param files: File paths relative to the basedir.
 
308
        :param keep_files: If true, the files will also be kept.
 
309
        :param force: Delete files and directories, even if they are changed
 
310
            and even if the directories are not empty.
 
311
        """
 
312
        if not isinstance(files, list):
 
313
            files = [files]
 
314
 
 
315
        if to_file is None:
 
316
            to_file = sys.stdout
 
317
 
 
318
        def backup(file_to_backup):
 
319
            abs_path = self.abspath(file_to_backup)
 
320
            backup_name = self.controldir._available_backup_name(file_to_backup)
 
321
            osutils.rename(abs_path, self.abspath(backup_name))
 
322
            return "removed %s (but kept a copy: %s)" % (
 
323
                file_to_backup, backup_name)
 
324
 
 
325
        # Sort needed to first handle directory content before the directory
 
326
        files_to_backup = []
 
327
 
 
328
        all_files = set()
 
329
 
 
330
        def recurse_directory_to_add_files(directory):
 
331
            # Recurse directory and add all files
 
332
            # so we can check if they have changed.
 
333
            for parent_info, file_infos in self.walkdirs(directory):
 
334
                for relpath, basename, kind, lstat, fileid, kind in file_infos:
 
335
                    # Is it versioned or ignored?
 
336
                    if self.is_versioned(relpath):
 
337
                        # Add nested content for deletion.
 
338
                        all_files.add(relpath)
 
339
                    else:
 
340
                        # Files which are not versioned
 
341
                        # should be treated as unknown.
 
342
                        files_to_backup.append(relpath)
 
343
 
 
344
        with self.lock_tree_write():
 
345
            for filepath in files:
 
346
                # Get file name into canonical form.
 
347
                abspath = self.abspath(filepath)
 
348
                filepath = self.relpath(abspath)
 
349
 
 
350
                if filepath:
 
351
                    all_files.add(filepath)
 
352
                    recurse_directory_to_add_files(filepath)
 
353
 
 
354
            files = list(all_files)
 
355
 
 
356
            if len(files) == 0:
 
357
                return # nothing to do
 
358
 
 
359
            # Sort needed to first handle directory content before the directory
 
360
            files.sort(reverse=True)
 
361
 
 
362
            # Bail out if we are going to delete files we shouldn't
 
363
            if not keep_files and not force:
 
364
                for (file_id, path, content_change, versioned, parent_id, name,
 
365
                     kind, executable) in self.iter_changes(self.basis_tree(),
 
366
                         include_unchanged=True, require_versioned=False,
 
367
                         want_unversioned=True, specific_files=files):
 
368
                    if versioned[0] == False:
 
369
                        # The record is unknown or newly added
 
370
                        files_to_backup.append(path[1])
 
371
                        files_to_backup.extend(osutils.parent_directories(path[1]))
 
372
                    elif (content_change and (kind[1] is not None) and
 
373
                            osutils.is_inside_any(files, path[1])):
 
374
                        # Versioned and changed, but not deleted, and still
 
375
                        # in one of the dirs to be deleted.
 
376
                        files_to_backup.append(path[1])
 
377
                        files_to_backup.extend(osutils.parent_directories(path[1]))
 
378
 
 
379
            for f in files:
 
380
                if f == '':
 
381
                    continue
 
382
 
 
383
                try:
 
384
                    kind = self.kind(f)
 
385
                except errors.NoSuchFile:
 
386
                    kind = None
 
387
 
 
388
                abs_path = self.abspath(f)
 
389
                if verbose:
 
390
                    # having removed it, it must be either ignored or unknown
 
391
                    if self.is_ignored(f):
 
392
                        new_status = 'I'
 
393
                    else:
 
394
                        new_status = '?'
 
395
                    kind_ch = osutils.kind_marker(kind)
 
396
                    to_file.write(new_status + '       ' + f + kind_ch + '\n')
 
397
                if kind is None:
 
398
                    message = "%s does not exist" % (f, )
 
399
                else:
 
400
                    if not keep_files:
 
401
                        if f in files_to_backup and not force:
 
402
                            message = backup(f)
 
403
                        else:
 
404
                            if kind == 'directory':
 
405
                                osutils.rmtree(abs_path)
 
406
                            else:
 
407
                                osutils.delete_any(abs_path)
 
408
                            message = "deleted %s" % (f,)
 
409
                    else:
 
410
                        message = "removed %s" % (f,)
 
411
                self._unversion_path(f)
 
412
 
 
413
                # print only one message (if any) per file.
 
414
                if message is not None:
 
415
                    trace.note(message)
 
416
            self._versioned_dirs = None
 
417
 
 
418
    def smart_add(self, file_list, recurse=True, action=None, save=True):
 
419
        if not file_list:
 
420
            file_list = [u'.']
 
421
 
 
422
        # expand any symlinks in the directory part, while leaving the
 
423
        # filename alone
 
424
        # only expanding if symlinks are supported avoids windows path bugs
 
425
        if osutils.has_symlinks():
 
426
            file_list = list(map(osutils.normalizepath, file_list))
 
427
 
 
428
        conflicts_related = set()
 
429
        for c in self.conflicts():
 
430
            conflicts_related.update(c.associated_filenames())
 
431
 
 
432
        added = []
 
433
        ignored = {}
 
434
        user_dirs = []
 
435
        def call_action(filepath, kind):
 
436
            if action is not None:
 
437
                parent_path = posixpath.dirname(filepath)
 
438
                parent_id = self.path2id(parent_path)
 
439
                parent_ie = self._get_dir_ie(parent_path, parent_id)
 
440
                file_id = action(self, parent_ie, filepath, kind)
 
441
                if file_id is not None:
 
442
                    raise workingtree.SettingFileIdUnsupported()
 
443
 
 
444
        with self.lock_tree_write():
 
445
            for filepath in osutils.canonical_relpaths(self.basedir, file_list):
 
446
                filepath, can_access = osutils.normalized_filename(filepath)
 
447
                if not can_access:
 
448
                    raise errors.InvalidNormalization(filepath)
 
449
 
 
450
                abspath = self.abspath(filepath)
 
451
                kind = osutils.file_kind(abspath)
 
452
                if kind in ("file", "symlink"):
 
453
                    (index, subpath) = self._lookup_index(filepath.encode('utf-8'))
 
454
                    if subpath in index:
 
455
                        # Already present
 
456
                        continue
 
457
                    call_action(filepath, kind)
 
458
                    if save:
 
459
                        self._index_add_entry(filepath, kind)
 
460
                    added.append(filepath)
 
461
                elif kind == "directory":
 
462
                    (index, subpath) = self._lookup_index(filepath.encode('utf-8'))
 
463
                    if subpath not in index:
 
464
                        call_action(filepath, kind)
 
465
                    if recurse:
 
466
                        user_dirs.append(filepath)
 
467
                else:
 
468
                    raise errors.BadFileKindError(filename=abspath, kind=kind)
 
469
            for user_dir in user_dirs:
 
470
                abs_user_dir = self.abspath(user_dir)
 
471
                if user_dir != '':
 
472
                    try:
 
473
                        transport = _mod_transport.get_transport_from_path(abs_user_dir)
 
474
                        _mod_controldir.ControlDirFormat.find_format(transport)
 
475
                        subtree = True
 
476
                    except errors.NotBranchError:
 
477
                        subtree = False
 
478
                    except errors.UnsupportedFormatError:
 
479
                        subtree = False
 
480
                else:
 
481
                    subtree = False
 
482
                if subtree:
 
483
                    trace.warning('skipping nested tree %r', abs_user_dir)
 
484
                    continue
 
485
 
 
486
                for name in os.listdir(abs_user_dir):
 
487
                    subp = os.path.join(user_dir, name)
 
488
                    if self.is_control_filename(subp) or self.mapping.is_special_file(subp):
 
489
                        continue
 
490
                    ignore_glob = self.is_ignored(subp)
 
491
                    if ignore_glob is not None:
 
492
                        ignored.setdefault(ignore_glob, []).append(subp)
 
493
                        continue
 
494
                    abspath = self.abspath(subp)
 
495
                    kind = osutils.file_kind(abspath)
 
496
                    if kind == "directory":
 
497
                        user_dirs.append(subp)
 
498
                    else:
 
499
                        if subp in self.index:
 
500
                            # Already present
 
501
                            continue
 
502
                        if subp in conflicts_related:
 
503
                            continue
 
504
                        call_action(filepath, kind)
 
505
                        if save:
 
506
                            self._index_add_entry(subp, kind)
 
507
                        added.append(subp)
 
508
            return added, ignored
 
509
 
 
510
    def has_filename(self, filename):
 
511
        return osutils.lexists(self.abspath(filename))
 
512
 
 
513
    def _iter_files_recursive(self, from_dir=None, include_dirs=False):
 
514
        if from_dir is None:
 
515
            from_dir = u""
 
516
        for (dirpath, dirnames, filenames) in os.walk(self.abspath(from_dir).encode(osutils._fs_enc)):
 
517
            dir_relpath = dirpath[len(self.basedir):].strip(b"/")
 
518
            if self.controldir.is_control_filename(dir_relpath.decode(osutils._fs_enc)):
 
519
                continue
 
520
            for name in list(dirnames):
 
521
                if self.controldir.is_control_filename(name.decode(osutils._fs_enc)):
 
522
                    dirnames.remove(name)
 
523
                    continue
 
524
                relpath = os.path.join(dir_relpath, name)
 
525
                if include_dirs:
 
526
                    try:
 
527
                        yield relpath.decode(osutils._fs_enc)
 
528
                    except UnicodeDecodeError:
 
529
                        raise errors.BadFilenameEncoding(
 
530
                            relpath, osutils._fs_enc)
 
531
                if not self._has_dir(relpath):
 
532
                    dirnames.remove(name)
 
533
            for name in filenames:
 
534
                if not self.mapping.is_special_file(name):
 
535
                    yp = os.path.join(dir_relpath, name)
 
536
                    try:
 
537
                        yield yp.decode(osutils._fs_enc)
 
538
                    except UnicodeDecodeError:
 
539
                        raise errors.BadFilenameEncoding(
 
540
                            yp, osutils._fs_enc)
 
541
 
 
542
    def extras(self):
 
543
        """Yield all unversioned files in this WorkingTree.
 
544
        """
 
545
        with self.lock_read():
 
546
            index_paths = set([p.decode('utf-8') for p, i in self._recurse_index_entries()])
 
547
            all_paths = set(self._iter_files_recursive(include_dirs=True))
 
548
            for p in (all_paths - index_paths):
 
549
                if not self._has_dir(p.encode('utf-8')):
 
550
                    yield p
 
551
 
 
552
    def _gather_kinds(self, files, kinds):
 
553
        """See MutableTree._gather_kinds."""
 
554
        with self.lock_tree_write():
 
555
            for pos, f in enumerate(files):
 
556
                if kinds[pos] is None:
 
557
                    fullpath = osutils.normpath(self.abspath(f))
 
558
                    try:
 
559
                         kind = osutils.file_kind(fullpath)
 
560
                    except OSError as e:
 
561
                        if e.errno == errno.ENOENT:
 
562
                            raise errors.NoSuchFile(fullpath)
 
563
                    if kind == 'directory' and f != '' and os.path.exists(os.path.join(fullpath, '.git')):
 
564
                        kind = 'tree-reference'
 
565
                    kinds[pos] = kind
 
566
 
 
567
    def flush(self):
 
568
        if self._lock_mode != 'w':
 
569
            raise errors.NotWriteLocked(self)
 
570
        # TODO(jelmer): This shouldn't be writing in-place, but index.lock is
 
571
        # already in use and GitFile doesn't allow overriding the lock file name :(
 
572
        f = open(self.control_transport.local_abspath('index'), 'wb')
 
573
        # Note that _flush will close the file
 
574
        self._flush(f)
 
575
 
 
576
    def _flush(self, f):
 
577
        try:
 
578
            shaf = SHA1Writer(f)
 
579
            write_index_dict(shaf, self.index)
 
580
            shaf.close()
 
581
        except:
 
582
            f.abort()
 
583
            raise
 
584
        self._index_dirty = False
 
585
 
 
586
    def has_or_had_id(self, file_id):
 
587
        if self.has_id(file_id):
 
588
            return True
 
589
        if self.had_id(file_id):
 
590
            return True
 
591
        return False
 
592
 
 
593
    def had_id(self, file_id):
 
594
        path = self._basis_fileid_map.lookup_path(file_id)
 
595
        try:
 
596
            head = self.repository._git.head()
 
597
        except KeyError:
 
598
            # Assume no if basis is not accessible
 
599
            return False
 
600
        try:
 
601
            root_tree = self.store[head].tree
 
602
        except KeyError:
 
603
            return False
 
604
        try:
 
605
            tree_lookup_path(self.store.__getitem__, root_tree, path.encode('utf-8'))
 
606
        except KeyError:
 
607
            return False
 
608
        else:
 
609
            return True
 
610
 
 
611
    def get_file_mtime(self, path, file_id=None):
 
612
        """See Tree.get_file_mtime."""
 
613
        try:
 
614
            return self._lstat(path).st_mtime
 
615
        except OSError as e:
 
616
            if e.errno == errno.ENOENT:
 
617
                raise errors.NoSuchFile(path)
 
618
            raise
 
619
 
 
620
    def is_ignored(self, filename):
 
621
        r"""Check whether the filename matches an ignore pattern.
 
622
 
 
623
        If the file is ignored, returns the pattern which caused it to
 
624
        be ignored, otherwise None.  So this can simply be used as a
 
625
        boolean if desired."""
 
626
        if getattr(self, '_global_ignoreglobster', None) is None:
 
627
            ignore_globs = set()
 
628
            ignore_globs.update(ignores.get_runtime_ignores())
 
629
            ignore_globs.update(ignores.get_user_ignores())
 
630
            self._global_ignoreglobster = globbing.ExceptionGlobster(ignore_globs)
 
631
        match = self._global_ignoreglobster.match(filename)
 
632
        if match is not None:
 
633
            return match
 
634
        encoded_filename = filename.encode('utf-8')
 
635
        try:
 
636
            if self.kind(filename) == 'directory':
 
637
                encoded_filename += b'/'
 
638
        except errors.NoSuchFile:
 
639
            pass
 
640
        encoded_filename = encoded_filename.lstrip(b'/')
 
641
        ignore_manager = self._get_ignore_manager()
 
642
        ps = list(ignore_manager.find_matching(filename))
 
643
        if not ps:
 
644
            return None
 
645
        if not ps[-1].is_exclude:
 
646
            return None
 
647
        return bytes(ps[-1])
 
648
 
 
649
    def _get_ignore_manager(self):
 
650
        ignoremanager = getattr(self, '_ignoremanager', None)
 
651
        if ignoremanager is not None:
 
652
            return ignoremanager
 
653
 
 
654
        ignore_manager = IgnoreFilterManager.from_repo(self.repository._git)
 
655
        self._ignoremanager = ignore_manager
 
656
        return ignore_manager
 
657
 
 
658
    def _flush_ignore_list_cache(self):
 
659
        self._ignoremanager = None
 
660
 
 
661
    def set_last_revision(self, revid):
 
662
        if _mod_revision.is_null(revid):
 
663
            self.branch.set_last_revision_info(0, revid)
 
664
            return False
 
665
        _mod_revision.check_not_reserved_id(revid)
 
666
        try:
 
667
            self.branch.generate_revision_history(revid)
 
668
        except errors.NoSuchRevision:
 
669
            raise errors.GhostRevisionUnusableHere(revid)
 
670
 
 
671
    def _reset_data(self):
 
672
        try:
 
673
            head = self.repository._git.head()
 
674
        except KeyError:
 
675
            self._basis_fileid_map = GitFileIdMap({}, self.mapping)
 
676
        else:
 
677
            self._basis_fileid_map = self.mapping.get_fileid_map(
 
678
                self.store.__getitem__, self.store[head].tree)
 
679
        self._fileid_map = self._basis_fileid_map.copy()
 
680
 
 
681
    def get_file_verifier(self, path, file_id=None, stat_value=None):
 
682
        with self.lock_read():
 
683
            (index, subpath) = self._lookup_index(path.encode('utf-8'))
 
684
            try:
 
685
                return ("GIT", index[subpath].sha)
 
686
            except KeyError:
 
687
                if self._has_dir(path):
 
688
                    return ("GIT", None)
 
689
                raise errors.NoSuchFile(path)
 
690
 
 
691
    def get_file_sha1(self, path, file_id=None, stat_value=None):
 
692
        with self.lock_read():
 
693
            if not self.is_versioned(path):
 
694
                raise errors.NoSuchFile(path)
 
695
            abspath = self.abspath(path)
 
696
            try:
 
697
                return osutils.sha_file_by_name(abspath)
 
698
            except OSError as e:
 
699
                if e.errno in (errno.EISDIR, errno.ENOENT):
 
700
                    return None
 
701
                raise
 
702
 
 
703
    def revision_tree(self, revid):
 
704
        return self.repository.revision_tree(revid)
 
705
 
 
706
    def _is_executable_from_path_and_stat_from_stat(self, path, stat_result):
 
707
        mode = stat_result.st_mode
 
708
        return bool(stat.S_ISREG(mode) and stat.S_IEXEC & mode)
 
709
 
 
710
    def _is_executable_from_path_and_stat_from_basis(self, path, stat_result):
 
711
        return self.basis_tree().is_executable(path)
 
712
 
 
713
    def stored_kind(self, path, file_id=None):
 
714
        with self.lock_read():
 
715
            encoded_path = path.encode('utf-8')
 
716
            (index, subpath) = self._lookup_index(encoded_path)
 
717
            try:
 
718
                return mode_kind(index[subpath].mode)
 
719
            except KeyError:
 
720
                # Maybe it's a directory?
 
721
                if self._has_dir(encoded_path):
 
722
                    return "directory"
 
723
                raise errors.NoSuchFile(path)
 
724
 
 
725
    def _lstat(self, path):
 
726
        return os.lstat(self.abspath(path))
 
727
 
 
728
    def _live_entry(self, path):
 
729
        return index_entry_from_path(self.abspath(path.decode('utf-8')).encode(osutils._fs_enc))
 
730
 
 
731
    def is_executable(self, path, file_id=None):
 
732
        with self.lock_read():
 
733
            if getattr(self, "_supports_executable", osutils.supports_executable)():
 
734
                mode = self._lstat(path).st_mode
 
735
            else:
 
736
                (index, subpath) = self._lookup_index(path.encode('utf-8'))
 
737
                try:
 
738
                    mode = index[subpath].mode
 
739
                except KeyError:
 
740
                    mode = 0
 
741
            return bool(stat.S_ISREG(mode) and stat.S_IEXEC & mode)
 
742
 
 
743
    def _is_executable_from_path_and_stat(self, path, stat_result):
 
744
        if getattr(self, "_supports_executable", osutils.supports_executable)():
 
745
            return self._is_executable_from_path_and_stat_from_stat(path, stat_result)
 
746
        else:
 
747
            return self._is_executable_from_path_and_stat_from_basis(path, stat_result)
 
748
 
 
749
    def list_files(self, include_root=False, from_dir=None, recursive=True):
 
750
        if from_dir is None:
 
751
            from_dir = u""
 
752
        dir_ids = {}
 
753
        fk_entries = {'directory': tree.TreeDirectory,
 
754
                      'file': tree.TreeFile,
 
755
                      'symlink': tree.TreeLink,
 
756
                      'tree-reference': tree.TreeReference}
 
757
        with self.lock_read():
 
758
            root_ie = self._get_dir_ie(u"", None)
 
759
            if include_root and not from_dir:
 
760
                yield "", "V", root_ie.kind, root_ie.file_id, root_ie
 
761
            dir_ids[u""] = root_ie.file_id
 
762
            if recursive:
 
763
                path_iterator = sorted(self._iter_files_recursive(from_dir, include_dirs=True))
 
764
            else:
 
765
                path_iterator = sorted([os.path.join(from_dir, name.decode(osutils._fs_enc)) for name in
 
766
                    os.listdir(self.abspath(from_dir).encode(osutils._fs_enc))
 
767
                    if not self.controldir.is_control_filename(name.decode(osutils._fs_enc))
 
768
                    and not self.mapping.is_special_file(name.decode(osutils._fs_enc))])
 
769
            for path in path_iterator:
 
770
                try:
 
771
                    encoded_path = path.encode("utf-8")
 
772
                except UnicodeEncodeError:
 
773
                    raise errors.BadFilenameEncoding(
 
774
                        path, osutils._fs_enc)
 
775
                (index, index_path) = self._lookup_index(encoded_path)
 
776
                try:
 
777
                    value = index[index_path]
 
778
                except KeyError:
 
779
                    value = None
 
780
                kind = self.kind(path)
 
781
                parent, name = posixpath.split(path)
 
782
                for dir_path, dir_ie in self._add_missing_parent_ids(parent, dir_ids):
 
783
                    pass
 
784
                if kind in ('directory', 'tree-reference'):
 
785
                    if path != from_dir:
 
786
                        if self._has_dir(encoded_path):
 
787
                            ie = self._get_dir_ie(path, self.path2id(path))
 
788
                            status = "V"
 
789
                            file_id = ie.file_id
 
790
                        elif self.is_ignored(path):
 
791
                            status = "I"
 
792
                            ie = fk_entries[kind]()
 
793
                            file_id = None
 
794
                        else:
 
795
                            status = "?"
 
796
                            ie = fk_entries[kind]()
 
797
                            file_id = None
 
798
                        yield posixpath.relpath(path, from_dir), status, kind, file_id, ie
 
799
                    continue
 
800
                if value is not None:
 
801
                    ie = self._get_file_ie(name, path, value, dir_ids[parent])
 
802
                    yield posixpath.relpath(path, from_dir), "V", ie.kind, ie.file_id, ie
 
803
                else:
 
804
                    ie = fk_entries[kind]()
 
805
                    yield posixpath.relpath(path, from_dir), ("I" if self.is_ignored(path) else "?"), kind, None, ie
 
806
 
 
807
    def all_file_ids(self):
 
808
        with self.lock_read():
 
809
            ids = {u"": self.path2id("")}
 
810
            for path in self.index:
 
811
                if self.mapping.is_special_file(path):
 
812
                    continue
 
813
                path = path.decode("utf-8")
 
814
                parent = posixpath.dirname(path).strip("/")
 
815
                for e in self._add_missing_parent_ids(parent, ids):
 
816
                    pass
 
817
                ids[path] = self.path2id(path)
 
818
            return set(ids.values())
 
819
 
 
820
    def all_versioned_paths(self):
 
821
        with self.lock_read():
 
822
            paths = {u""}
 
823
            for path in self.index:
 
824
                if self.mapping.is_special_file(path):
 
825
                    continue
 
826
                path = path.decode("utf-8")
 
827
                paths.add(path)
 
828
                while path != "":
 
829
                    path = posixpath.dirname(path).strip("/")
 
830
                    if path in paths:
 
831
                        break
 
832
                    paths.add(path)
 
833
            return paths
 
834
 
 
835
    def iter_child_entries(self, path, file_id=None):
 
836
        encoded_path = path.encode('utf-8')
 
837
        with self.lock_read():
 
838
            parent_id = self.path2id(path)
 
839
            found_any = False
 
840
            seen_children = set()
 
841
            for item_path, value in self.index.iteritems():
 
842
                decoded_item_path = item_path.decode('utf-8')
 
843
                if self.mapping.is_special_file(item_path):
 
844
                    continue
 
845
                if not osutils.is_inside(path, decoded_item_path):
 
846
                    continue
 
847
                found_any = True
 
848
                subpath = posixpath.relpath(decoded_item_path, path)
 
849
                if '/' in subpath:
 
850
                    dirname = subpath.split('/', 1)[0]
 
851
                    file_ie = self._get_dir_ie(posixpath.join(path, dirname), parent_id)
 
852
                else:
 
853
                    (unused_parent, name) = posixpath.split(decoded_item_path)
 
854
                    file_ie = self._get_file_ie(
 
855
                        name, decoded_item_path, value, parent_id)
 
856
                yield file_ie
 
857
            if not found_any and path != u'':
 
858
                raise errors.NoSuchFile(path)
 
859
 
 
860
    def conflicts(self):
 
861
        with self.lock_read():
 
862
            conflicts = _mod_conflicts.ConflictList()
 
863
            for item_path, value in self.index.iteritems():
 
864
                if value.flags & FLAG_STAGEMASK:
 
865
                    conflicts.append(_mod_conflicts.TextConflict(item_path.decode('utf-8')))
 
866
            return conflicts
 
867
 
 
868
    def set_conflicts(self, conflicts):
 
869
        by_path = set()
 
870
        for conflict in conflicts:
 
871
            if conflict.typestring in ('text conflict', 'contents conflict'):
 
872
                by_path.add(conflict.path.encode('utf-8'))
 
873
            else:
 
874
                raise errors.UnsupportedOperation(self.set_conflicts, self)
 
875
        with self.lock_tree_write():
 
876
            for path in self.index:
 
877
                self._set_conflicted(path, path in by_path)
 
878
 
 
879
    def _set_conflicted(self, path, conflicted):
 
880
        trace.mutter('change conflict: %r -> %r', path, conflicted)
 
881
        value = self.index[path]
 
882
        self._index_dirty = True
 
883
        if conflicted:
 
884
            self.index[path] = (value[:9] + (value[9] | FLAG_STAGEMASK, ))
 
885
        else:
 
886
            self.index[path] = (value[:9] + (value[9] &~ FLAG_STAGEMASK, ))
 
887
 
 
888
    def add_conflicts(self, new_conflicts):
 
889
        with self.lock_tree_write():
 
890
            for conflict in new_conflicts:
 
891
                if conflict.typestring in ('text conflict', 'contents conflict'):
 
892
                    try:
 
893
                        self._set_conflicted(conflict.path.encode('utf-8'), True)
 
894
                    except KeyError:
 
895
                        raise errors.UnsupportedOperation(self.add_conflicts, self)
 
896
                else:
 
897
                    raise errors.UnsupportedOperation(self.add_conflicts, self)
 
898
 
 
899
    def walkdirs(self, prefix=""):
 
900
        """Walk the directories of this tree.
 
901
 
 
902
        returns a generator which yields items in the form:
 
903
                ((curren_directory_path, fileid),
 
904
                 [(file1_path, file1_name, file1_kind, (lstat), file1_id,
 
905
                   file1_kind), ... ])
 
906
 
 
907
        This API returns a generator, which is only valid during the current
 
908
        tree transaction - within a single lock_read or lock_write duration.
 
909
 
 
910
        If the tree is not locked, it may cause an error to be raised,
 
911
        depending on the tree implementation.
 
912
        """
 
913
        from bisect import bisect_left
 
914
        import operator
 
915
        disk_top = self.abspath(prefix)
 
916
        if disk_top.endswith('/'):
 
917
            disk_top = disk_top[:-1]
 
918
        top_strip_len = len(disk_top) + 1
 
919
        inventory_iterator = self._walkdirs(prefix)
 
920
        disk_iterator = osutils.walkdirs(disk_top, prefix)
 
921
        try:
 
922
            current_disk = next(disk_iterator)
 
923
            disk_finished = False
 
924
        except OSError as e:
 
925
            if not (e.errno == errno.ENOENT or
 
926
                (sys.platform == 'win32' and e.errno == ERROR_PATH_NOT_FOUND)):
 
927
                raise
 
928
            current_disk = None
 
929
            disk_finished = True
 
930
        try:
 
931
            current_inv = next(inventory_iterator)
 
932
            inv_finished = False
 
933
        except StopIteration:
 
934
            current_inv = None
 
935
            inv_finished = True
 
936
        while not inv_finished or not disk_finished:
 
937
            if current_disk:
 
938
                ((cur_disk_dir_relpath, cur_disk_dir_path_from_top),
 
939
                    cur_disk_dir_content) = current_disk
 
940
            else:
 
941
                ((cur_disk_dir_relpath, cur_disk_dir_path_from_top),
 
942
                    cur_disk_dir_content) = ((None, None), None)
 
943
            if not disk_finished:
 
944
                # strip out .bzr dirs
 
945
                if (cur_disk_dir_path_from_top[top_strip_len:] == '' and
 
946
                    len(cur_disk_dir_content) > 0):
 
947
                    # osutils.walkdirs can be made nicer -
 
948
                    # yield the path-from-prefix rather than the pathjoined
 
949
                    # value.
 
950
                    bzrdir_loc = bisect_left(cur_disk_dir_content,
 
951
                        ('.git', '.git'))
 
952
                    if (bzrdir_loc < len(cur_disk_dir_content)
 
953
                        and self.controldir.is_control_filename(
 
954
                            cur_disk_dir_content[bzrdir_loc][0])):
 
955
                        # we dont yield the contents of, or, .bzr itself.
 
956
                        del cur_disk_dir_content[bzrdir_loc]
 
957
            if inv_finished:
 
958
                # everything is unknown
 
959
                direction = 1
 
960
            elif disk_finished:
 
961
                # everything is missing
 
962
                direction = -1
 
963
            else:
 
964
                direction = ((current_inv[0][0] > cur_disk_dir_relpath) -
 
965
                             (current_inv[0][0] < cur_disk_dir_relpath))
 
966
            if direction > 0:
 
967
                # disk is before inventory - unknown
 
968
                dirblock = [(relpath, basename, kind, stat, None, None) for
 
969
                    relpath, basename, kind, stat, top_path in
 
970
                    cur_disk_dir_content]
 
971
                yield (cur_disk_dir_relpath, None), dirblock
 
972
                try:
 
973
                    current_disk = next(disk_iterator)
 
974
                except StopIteration:
 
975
                    disk_finished = True
 
976
            elif direction < 0:
 
977
                # inventory is before disk - missing.
 
978
                dirblock = [(relpath, basename, 'unknown', None, fileid, kind)
 
979
                    for relpath, basename, dkind, stat, fileid, kind in
 
980
                    current_inv[1]]
 
981
                yield (current_inv[0][0], current_inv[0][1]), dirblock
 
982
                try:
 
983
                    current_inv = next(inventory_iterator)
 
984
                except StopIteration:
 
985
                    inv_finished = True
 
986
            else:
 
987
                # versioned present directory
 
988
                # merge the inventory and disk data together
 
989
                dirblock = []
 
990
                for relpath, subiterator in itertools.groupby(sorted(
 
991
                    current_inv[1] + cur_disk_dir_content,
 
992
                    key=operator.itemgetter(0)), operator.itemgetter(1)):
 
993
                    path_elements = list(subiterator)
 
994
                    if len(path_elements) == 2:
 
995
                        inv_row, disk_row = path_elements
 
996
                        # versioned, present file
 
997
                        dirblock.append((inv_row[0],
 
998
                            inv_row[1], disk_row[2],
 
999
                            disk_row[3], inv_row[4],
 
1000
                            inv_row[5]))
 
1001
                    elif len(path_elements[0]) == 5:
 
1002
                        # unknown disk file
 
1003
                        dirblock.append((path_elements[0][0],
 
1004
                            path_elements[0][1], path_elements[0][2],
 
1005
                            path_elements[0][3], None, None))
 
1006
                    elif len(path_elements[0]) == 6:
 
1007
                        # versioned, absent file.
 
1008
                        dirblock.append((path_elements[0][0],
 
1009
                            path_elements[0][1], 'unknown', None,
 
1010
                            path_elements[0][4], path_elements[0][5]))
 
1011
                    else:
 
1012
                        raise NotImplementedError('unreachable code')
 
1013
                yield current_inv[0], dirblock
 
1014
                try:
 
1015
                    current_inv = next(inventory_iterator)
 
1016
                except StopIteration:
 
1017
                    inv_finished = True
 
1018
                try:
 
1019
                    current_disk = next(disk_iterator)
 
1020
                except StopIteration:
 
1021
                    disk_finished = True
 
1022
 
 
1023
    def _walkdirs(self, prefix=u""):
 
1024
        if prefix != u"":
 
1025
            prefix += u"/"
 
1026
        prefix = prefix.encode('utf-8')
 
1027
        per_dir = defaultdict(set)
 
1028
        if prefix == b"":
 
1029
            per_dir[(u'', self.get_root_id())] = set()
 
1030
        def add_entry(path, kind):
 
1031
            if path == b'' or not path.startswith(prefix):
 
1032
                return
 
1033
            (dirname, child_name) = posixpath.split(path)
 
1034
            add_entry(dirname, 'directory')
 
1035
            dirname = dirname.decode("utf-8")
 
1036
            dir_file_id = self.path2id(dirname)
 
1037
            if not isinstance(value, tuple) or len(value) != 10:
 
1038
                raise ValueError(value)
 
1039
            per_dir[(dirname, dir_file_id)].add(
 
1040
                (path.decode("utf-8"), child_name.decode("utf-8"),
 
1041
                kind, None,
 
1042
                self.path2id(path.decode("utf-8")),
 
1043
                kind))
 
1044
        with self.lock_read():
 
1045
            for path, value in self.index.iteritems():
 
1046
                if self.mapping.is_special_file(path):
 
1047
                    continue
 
1048
                if not path.startswith(prefix):
 
1049
                    continue
 
1050
                add_entry(path, mode_kind(value.mode))
 
1051
        return ((k, sorted(v)) for (k, v) in sorted(per_dir.items()))
 
1052
 
 
1053
    def get_shelf_manager(self):
 
1054
        raise workingtree.ShelvingUnsupported()
 
1055
 
 
1056
    def store_uncommitted(self):
 
1057
        raise errors.StoringUncommittedNotSupported(self)
 
1058
 
 
1059
    def apply_inventory_delta(self, changes):
 
1060
        for (old_path, new_path, file_id, ie) in changes:
 
1061
            if old_path is not None:
 
1062
                (index, old_subpath) = self._lookup_index(old_path.encode('utf-8'))
 
1063
                try:
 
1064
                    self._index_del_entry(index, old_subpath)
 
1065
                except KeyError:
 
1066
                    pass
 
1067
                else:
 
1068
                    self._versioned_dirs = None
 
1069
            if new_path is not None and ie.kind != 'directory':
 
1070
                if ie.kind == 'tree-reference':
 
1071
                    self._index_add_entry(
 
1072
                            new_path, ie.kind,
 
1073
                            reference_revision=ie.reference_revision)
 
1074
                else:
 
1075
                    self._index_add_entry(new_path, ie.kind)
 
1076
        self.flush()
 
1077
 
 
1078
    def annotate_iter(self, path, file_id=None,
 
1079
                      default_revision=_mod_revision.CURRENT_REVISION):
 
1080
        """See Tree.annotate_iter
 
1081
 
 
1082
        This implementation will use the basis tree implementation if possible.
 
1083
        Lines not in the basis are attributed to CURRENT_REVISION
 
1084
 
 
1085
        If there are pending merges, lines added by those merges will be
 
1086
        incorrectly attributed to CURRENT_REVISION (but after committing, the
 
1087
        attribution will be correct).
 
1088
        """
 
1089
        with self.lock_read():
 
1090
            maybe_file_parent_keys = []
 
1091
            for parent_id in self.get_parent_ids():
 
1092
                try:
 
1093
                    parent_tree = self.revision_tree(parent_id)
 
1094
                except errors.NoSuchRevisionInTree:
 
1095
                    parent_tree = self.branch.repository.revision_tree(
 
1096
                            parent_id)
 
1097
                with parent_tree.lock_read():
 
1098
                    # TODO(jelmer): Use rename/copy tracker to find path name in parent
 
1099
                    parent_path = path
 
1100
                    try:
 
1101
                        kind = parent_tree.kind(parent_path)
 
1102
                    except errors.NoSuchFile:
 
1103
                        continue
 
1104
                    if kind != 'file':
 
1105
                        # Note: this is slightly unnecessary, because symlinks and
 
1106
                        # directories have a "text" which is the empty text, and we
 
1107
                        # know that won't mess up annotations. But it seems cleaner
 
1108
                        continue
 
1109
                    parent_text_key = (
 
1110
                        parent_path,
 
1111
                        parent_tree.get_file_revision(parent_path))
 
1112
                    if parent_text_key not in maybe_file_parent_keys:
 
1113
                        maybe_file_parent_keys.append(parent_text_key)
 
1114
            # Now we have the parents of this content
 
1115
            from breezy.annotate import Annotator
 
1116
            from .annotate import AnnotateProvider
 
1117
            annotate_provider = AnnotateProvider(
 
1118
                self.branch.repository._file_change_scanner)
 
1119
            annotator = Annotator(annotate_provider)
 
1120
 
 
1121
            from breezy.graph import Graph
 
1122
            graph = Graph(annotate_provider)
 
1123
            heads = graph.heads(maybe_file_parent_keys)
 
1124
            file_parent_keys = []
 
1125
            for key in maybe_file_parent_keys:
 
1126
                if key in heads:
 
1127
                    file_parent_keys.append(key)
 
1128
 
 
1129
            text = self.get_file_text(path)
 
1130
            this_key = (path, default_revision)
 
1131
            annotator.add_special_text(this_key, file_parent_keys, text)
 
1132
            annotations = [(key[-1], line)
 
1133
                           for key, line in annotator.annotate_flat(this_key)]
 
1134
            return annotations
 
1135
 
 
1136
    def _rename_one(self, from_rel, to_rel):
 
1137
        os.rename(self.abspath(from_rel), self.abspath(to_rel))
 
1138
 
 
1139
    def _build_checkout_with_index(self):
 
1140
        build_index_from_tree(
 
1141
            self.user_transport.local_abspath('.'),
 
1142
            self.control_transport.local_abspath("index"),
 
1143
            self.store,
 
1144
            None if self.branch.head is None else self.store[self.branch.head].tree)
 
1145
 
 
1146
    def reset_state(self, revision_ids=None):
 
1147
        """Reset the state of the working tree.
 
1148
 
 
1149
        This does a hard-reset to a last-known-good state. This is a way to
 
1150
        fix if something got corrupted (like the .git/index file)
 
1151
        """
 
1152
        with self.lock_tree_write():
 
1153
            if revision_ids is not None:
 
1154
                self.set_parent_ids(revision_ids)
 
1155
            self.index.clear()
 
1156
            self._index_dirty = True
 
1157
            if self.branch.head is not None:
 
1158
                for entry in self.store.iter_tree_contents(self.store[self.branch.head].tree):
 
1159
                    if not validate_path(entry.path):
 
1160
                        continue
 
1161
 
 
1162
                    if S_ISGITLINK(entry.mode):
 
1163
                        pass # TODO(jelmer): record and return submodule paths
 
1164
                    else:
 
1165
                        # Let's at least try to use the working tree file:
 
1166
                        try:
 
1167
                            st = self._lstat(self.abspath(entry.path.decode('utf-8')))
 
1168
                        except OSError:
 
1169
                            # But if it doesn't exist, we'll make something up.
 
1170
                            obj = self.store[entry.sha]
 
1171
                            st = os.stat_result((entry.mode, 0, 0, 0,
 
1172
                                  0, 0, len(obj.as_raw_string()), 0,
 
1173
                                  0, 0))
 
1174
                    (index, subpath) = self._lookup_index(entry.path)
 
1175
                    index[subpath] = index_entry_from_stat(st, entry.sha, 0)
 
1176
 
 
1177
    def pull(self, source, overwrite=False, stop_revision=None,
 
1178
             change_reporter=None, possible_transports=None, local=False,
 
1179
             show_base=False):
 
1180
        with self.lock_write(), source.lock_read():
 
1181
            old_revision = self.branch.last_revision()
 
1182
            basis_tree = self.basis_tree()
 
1183
            count = self.branch.pull(source, overwrite, stop_revision,
 
1184
                                     possible_transports=possible_transports,
 
1185
                                     local=local)
 
1186
            new_revision = self.branch.last_revision()
 
1187
            if new_revision != old_revision:
 
1188
                with basis_tree.lock_read():
 
1189
                    new_basis_tree = self.branch.basis_tree()
 
1190
                    merge.merge_inner(
 
1191
                                self.branch,
 
1192
                                new_basis_tree,
 
1193
                                basis_tree,
 
1194
                                this_tree=self,
 
1195
                                change_reporter=change_reporter,
 
1196
                                show_base=show_base)
 
1197
            return count
 
1198
 
 
1199
    def add_reference(self, sub_tree):
 
1200
        """Add a TreeReference to the tree, pointing at sub_tree.
 
1201
 
 
1202
        :param sub_tree: subtree to add.
 
1203
        """
 
1204
        with self.lock_tree_write():
 
1205
            try:
 
1206
                sub_tree_path = self.relpath(sub_tree.basedir)
 
1207
            except errors.PathNotChild:
 
1208
                raise BadReferenceTarget(
 
1209
                        self, sub_tree, 'Target not inside tree.')
 
1210
 
 
1211
            self._add([sub_tree_path], [None], ['tree-reference'])
 
1212
 
 
1213
    def _read_submodule_head(self, path):
 
1214
        return read_submodule_head(self.abspath(path))
 
1215
 
 
1216
    def get_reference_revision(self, path, file_id=None):
 
1217
        hexsha = self._read_submodule_head(path)
 
1218
        if hexsha is None:
 
1219
            return _mod_revision.NULL_REVISION
 
1220
        return self.branch.lookup_foreign_revision_id(hexsha)
 
1221
 
 
1222
    def get_nested_tree(self, path, file_id=None):
 
1223
        return workingtree.WorkingTree.open(self.abspath(path))
 
1224
 
 
1225
    def _directory_is_tree_reference(self, relpath):
 
1226
        # as a special case, if a directory contains control files then
 
1227
        # it's a tree reference, except that the root of the tree is not
 
1228
        return relpath and osutils.lexists(self.abspath(relpath) + u"/.git")
 
1229
 
 
1230
    def extract(self, sub_path, file_id=None, format=None):
 
1231
        """Extract a subtree from this tree.
 
1232
 
 
1233
        A new branch will be created, relative to the path for this tree.
 
1234
        """
 
1235
        def mkdirs(path):
 
1236
            segments = osutils.splitpath(path)
 
1237
            transport = self.branch.controldir.root_transport
 
1238
            for name in segments:
 
1239
                transport = transport.clone(name)
 
1240
                transport.ensure_base()
 
1241
            return transport
 
1242
 
 
1243
        with self.lock_tree_write():
 
1244
            self.flush()
 
1245
            branch_transport = mkdirs(sub_path)
 
1246
            if format is None:
 
1247
                format = self.controldir.cloning_metadir()
 
1248
            branch_transport.ensure_base()
 
1249
            branch_bzrdir = format.initialize_on_transport(branch_transport)
 
1250
            try:
 
1251
                repo = branch_bzrdir.find_repository()
 
1252
            except errors.NoRepositoryPresent:
 
1253
                repo = branch_bzrdir.create_repository()
 
1254
            if not repo.supports_rich_root():
 
1255
                raise errors.RootNotRich()
 
1256
            new_branch = branch_bzrdir.create_branch()
 
1257
            new_branch.pull(self.branch)
 
1258
            for parent_id in self.get_parent_ids():
 
1259
                new_branch.fetch(self.branch, parent_id)
 
1260
            tree_transport = self.controldir.root_transport.clone(sub_path)
 
1261
            if tree_transport.base != branch_transport.base:
 
1262
                tree_bzrdir = format.initialize_on_transport(tree_transport)
 
1263
                tree_bzrdir.set_branch_reference(new_branch)
 
1264
            else:
 
1265
                tree_bzrdir = branch_bzrdir
 
1266
            wt = tree_bzrdir.create_workingtree(_mod_revision.NULL_REVISION)
 
1267
            wt.set_parent_ids(self.get_parent_ids())
 
1268
            return wt
 
1269
 
 
1270
    def _get_check_refs(self):
 
1271
        """Return the references needed to perform a check of this tree.
 
1272
 
 
1273
        The default implementation returns no refs, and is only suitable for
 
1274
        trees that have no local caching and can commit on ghosts at any time.
 
1275
 
 
1276
        :seealso: breezy.check for details about check_refs.
 
1277
        """
 
1278
        return []
 
1279
 
 
1280
    def copy_content_into(self, tree, revision_id=None):
 
1281
        """Copy the current content and user files of this tree into tree."""
 
1282
        with self.lock_read():
 
1283
            if revision_id is None:
 
1284
                merge.transform_tree(tree, self)
 
1285
            else:
 
1286
                # TODO now merge from tree.last_revision to revision (to
 
1287
                # preserve user local changes)
 
1288
                try:
 
1289
                    other_tree = self.revision_tree(revision_id)
 
1290
                except errors.NoSuchRevision:
 
1291
                    other_tree = self.branch.repository.revision_tree(
 
1292
                            revision_id)
 
1293
 
 
1294
                merge.transform_tree(tree, other_tree)
 
1295
                if revision_id == _mod_revision.NULL_REVISION:
 
1296
                    new_parents = []
 
1297
                else:
 
1298
                    new_parents = [revision_id]
 
1299
                tree.set_parent_ids(new_parents)
 
1300
 
 
1301
 
 
1302
class GitWorkingTreeFormat(workingtree.WorkingTreeFormat):
 
1303
 
 
1304
    _tree_class = GitWorkingTree
 
1305
 
 
1306
    supports_versioned_directories = False
 
1307
 
 
1308
    supports_setting_file_ids = False
 
1309
 
 
1310
    supports_store_uncommitted = False
 
1311
 
 
1312
    supports_leftmost_parent_id_as_ghost = False
 
1313
 
 
1314
    supports_righthand_parent_id_as_ghost = False
 
1315
 
 
1316
    requires_normalized_unicode_filenames = True
 
1317
 
 
1318
    supports_merge_modified = False
 
1319
 
 
1320
    @property
 
1321
    def _matchingcontroldir(self):
 
1322
        from .dir import LocalGitControlDirFormat
 
1323
        return LocalGitControlDirFormat()
 
1324
 
 
1325
    def get_format_description(self):
 
1326
        return "Git Working Tree"
 
1327
 
 
1328
    def initialize(self, a_controldir, revision_id=None, from_branch=None,
 
1329
                   accelerator_tree=None, hardlink=False):
 
1330
        """See WorkingTreeFormat.initialize()."""
 
1331
        if not isinstance(a_controldir, LocalGitDir):
 
1332
            raise errors.IncompatibleFormat(self, a_controldir)
 
1333
        branch = a_controldir.open_branch(nascent_ok=True)
 
1334
        if revision_id is not None:
 
1335
            branch.set_last_revision(revision_id)
 
1336
        wt = GitWorkingTree(
 
1337
                a_controldir, a_controldir.open_repository(), branch)
 
1338
        for hook in MutableTree.hooks['post_build_tree']:
 
1339
            hook(wt)
 
1340
        return wt