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  • Committer: Jelmer Vernooij
  • Date: 2020-03-22 01:35:14 UTC
  • mfrom: (7490.7.6 work)
  • mto: This revision was merged to the branch mainline in revision 7499.
  • Revision ID: jelmer@jelmer.uk-20200322013514-7vw1ntwho04rcuj3
merge lp:brz/3.1.

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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
import itertools
 
21
from collections import defaultdict
 
22
import errno
 
23
from dulwich.ignore import (
 
24
    IgnoreFilterManager,
 
25
    )
 
26
from dulwich.config import ConfigFile as GitConfigFile
 
27
from dulwich.file import GitFile, FileLocked
 
28
from dulwich.index import (
 
29
    Index,
 
30
    SHA1Writer,
 
31
    build_index_from_tree,
 
32
    index_entry_from_path,
 
33
    index_entry_from_stat,
 
34
    FLAG_STAGEMASK,
 
35
    read_submodule_head,
 
36
    validate_path,
 
37
    write_index_dict,
 
38
    )
 
39
from dulwich.object_store import (
 
40
    tree_lookup_path,
 
41
    )
 
42
from dulwich.objects import (
 
43
    S_ISGITLINK,
 
44
    )
 
45
import os
 
46
import posixpath
 
47
import stat
 
48
import sys
 
49
 
 
50
from .. import (
 
51
    branch as _mod_branch,
 
52
    conflicts as _mod_conflicts,
 
53
    errors,
 
54
    controldir as _mod_controldir,
 
55
    globbing,
 
56
    ignores,
 
57
    lock,
 
58
    merge,
 
59
    osutils,
 
60
    revision as _mod_revision,
 
61
    trace,
 
62
    transport as _mod_transport,
 
63
    tree,
 
64
    urlutils,
 
65
    workingtree,
 
66
    )
 
67
from ..decorators import (
 
68
    only_raises,
 
69
    )
 
70
from ..mutabletree import (
 
71
    BadReferenceTarget,
 
72
    MutableTree,
 
73
    )
 
74
 
 
75
 
 
76
from .dir import (
 
77
    LocalGitDir,
 
78
    )
 
79
from .tree import (
 
80
    MutableGitIndexTree,
 
81
    )
 
82
from .mapping import (
 
83
    mode_kind,
 
84
    )
 
85
 
 
86
 
 
87
class GitWorkingTree(MutableGitIndexTree, workingtree.WorkingTree):
 
88
    """A Git working tree."""
 
89
 
 
90
    def __init__(self, controldir, repo, branch):
 
91
        MutableGitIndexTree.__init__(self)
 
92
        basedir = controldir.root_transport.local_abspath('.')
 
93
        self.basedir = osutils.realpath(basedir)
 
94
        self.controldir = controldir
 
95
        self.repository = repo
 
96
        self.store = self.repository._git.object_store
 
97
        self.mapping = self.repository.get_mapping()
 
98
        self._branch = branch
 
99
        self._transport = self.repository._git._controltransport
 
100
        self._format = GitWorkingTreeFormat()
 
101
        self.index = None
 
102
        self._index_file = None
 
103
        self.views = self._make_views()
 
104
        self._rules_searcher = None
 
105
        self._detect_case_handling()
 
106
        self._reset_data()
 
107
 
 
108
    def supports_tree_reference(self):
 
109
        return True
 
110
 
 
111
    def supports_rename_tracking(self):
 
112
        return False
 
113
 
 
114
    def _read_index(self):
 
115
        self.index = Index(self.control_transport.local_abspath('index'))
 
116
        self._index_dirty = False
 
117
 
 
118
    def _get_submodule_index(self, relpath):
 
119
        if not isinstance(relpath, bytes):
 
120
            raise TypeError(relpath)
 
121
        try:
 
122
            info = self._submodule_info()[relpath]
 
123
        except KeyError:
 
124
            index_path = os.path.join(self.basedir, relpath.decode('utf-8'), '.git', 'index')
 
125
        else:
 
126
            index_path = self.control_transport.local_abspath(
 
127
                posixpath.join('modules', info[1], 'index'))
 
128
        return Index(index_path)
 
129
 
 
130
    def lock_read(self):
 
131
        """Lock the repository for read operations.
 
132
 
 
133
        :return: A breezy.lock.LogicalLockResult.
 
134
        """
 
135
        if not self._lock_mode:
 
136
            self._lock_mode = 'r'
 
137
            self._lock_count = 1
 
138
            self._read_index()
 
139
        else:
 
140
            self._lock_count += 1
 
141
        self.branch.lock_read()
 
142
        return lock.LogicalLockResult(self.unlock)
 
143
 
 
144
    def _lock_write_tree(self):
 
145
        if not self._lock_mode:
 
146
            self._lock_mode = 'w'
 
147
            self._lock_count = 1
 
148
            try:
 
149
                self._index_file = GitFile(
 
150
                    self.control_transport.local_abspath('index'), 'wb')
 
151
            except FileLocked:
 
152
                raise errors.LockContention('index')
 
153
            self._read_index()
 
154
        elif self._lock_mode == 'r':
 
155
            raise errors.ReadOnlyError(self)
 
156
        else:
 
157
            self._lock_count += 1
 
158
 
 
159
    def lock_tree_write(self):
 
160
        self.branch.lock_read()
 
161
        try:
 
162
            self._lock_write_tree()
 
163
            return lock.LogicalLockResult(self.unlock)
 
164
        except BaseException:
 
165
            self.branch.unlock()
 
166
            raise
 
167
 
 
168
    def lock_write(self, token=None):
 
169
        self.branch.lock_write()
 
170
        try:
 
171
            self._lock_write_tree()
 
172
            return lock.LogicalLockResult(self.unlock)
 
173
        except BaseException:
 
174
            self.branch.unlock()
 
175
            raise
 
176
 
 
177
    def is_locked(self):
 
178
        return self._lock_count >= 1
 
179
 
 
180
    def get_physical_lock_status(self):
 
181
        return False
 
182
 
 
183
    def break_lock(self):
 
184
        try:
 
185
            self.control_transport.delete('index.lock')
 
186
        except errors.NoSuchFile:
 
187
            pass
 
188
        self.branch.break_lock()
 
189
 
 
190
    @only_raises(errors.LockNotHeld, errors.LockBroken)
 
191
    def unlock(self):
 
192
        if not self._lock_count:
 
193
            return lock.cant_unlock_not_held(self)
 
194
        try:
 
195
            self._cleanup()
 
196
            self._lock_count -= 1
 
197
            if self._lock_count > 0:
 
198
                return
 
199
            if self._index_file is not None:
 
200
                if self._index_dirty:
 
201
                    self._flush(self._index_file)
 
202
                    self._index_file.close()
 
203
                else:
 
204
                    # Something else already triggered a write of the index
 
205
                    # file by calling .flush()
 
206
                    self._index_file.abort()
 
207
                self._index_file = None
 
208
            self._lock_mode = None
 
209
            self.index = None
 
210
        finally:
 
211
            self.branch.unlock()
 
212
 
 
213
    def _cleanup(self):
 
214
        pass
 
215
 
 
216
    def _detect_case_handling(self):
 
217
        try:
 
218
            self._transport.stat(".git/cOnFiG")
 
219
        except errors.NoSuchFile:
 
220
            self.case_sensitive = True
 
221
        else:
 
222
            self.case_sensitive = False
 
223
 
 
224
    def get_transform(self, pb=None):
 
225
        from ..transform import TreeTransform
 
226
        return TreeTransform(self, pb=pb)
 
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(
 
240
                revid)[0] for revid in rhs_parent_ids]
 
241
        except errors.NoSuchRevision as e:
 
242
            raise errors.GhostRevisionUnusableHere(e.revision)
 
243
        if merges:
 
244
            self.control_transport.put_bytes(
 
245
                'MERGE_HEAD', b'\n'.join(merges),
 
246
                mode=self.controldir._get_file_mode())
 
247
        else:
 
248
            try:
 
249
                self.control_transport.delete('MERGE_HEAD')
 
250
            except errors.NoSuchFile:
 
251
                pass
 
252
 
 
253
    def set_parent_ids(self, revision_ids, allow_leftmost_as_ghost=False):
 
254
        """Set the parent ids to revision_ids.
 
255
 
 
256
        See also set_parent_trees. This api will try to retrieve the tree data
 
257
        for each element of revision_ids from the trees repository. If you have
 
258
        tree data already available, it is more efficient to use
 
259
        set_parent_trees rather than set_parent_ids. set_parent_ids is however
 
260
        an easier API to use.
 
261
 
 
262
        :param revision_ids: The revision_ids to set as the parent ids of this
 
263
            working tree. Any of these may be ghosts.
 
264
        """
 
265
        with self.lock_tree_write():
 
266
            self._check_parents_for_ghosts(
 
267
                revision_ids, allow_leftmost_as_ghost=allow_leftmost_as_ghost)
 
268
            for revision_id in revision_ids:
 
269
                _mod_revision.check_not_reserved_id(revision_id)
 
270
 
 
271
            revision_ids = self._filter_parent_ids_by_ancestry(revision_ids)
 
272
 
 
273
            if len(revision_ids) > 0:
 
274
                self.set_last_revision(revision_ids[0])
 
275
            else:
 
276
                self.set_last_revision(_mod_revision.NULL_REVISION)
 
277
 
 
278
            self._set_merges_from_parent_ids(revision_ids[1:])
 
279
 
 
280
    def get_parent_ids(self):
 
281
        """See Tree.get_parent_ids.
 
282
 
 
283
        This implementation reads the pending merges list and last_revision
 
284
        value and uses that to decide what the parents list should be.
 
285
        """
 
286
        last_rev = _mod_revision.ensure_null(self._last_revision())
 
287
        if _mod_revision.NULL_REVISION == last_rev:
 
288
            parents = []
 
289
        else:
 
290
            parents = [last_rev]
 
291
        try:
 
292
            merges_bytes = self.control_transport.get_bytes('MERGE_HEAD')
 
293
        except errors.NoSuchFile:
 
294
            pass
 
295
        else:
 
296
            for l in osutils.split_lines(merges_bytes):
 
297
                revision_id = l.rstrip(b'\n')
 
298
                parents.append(
 
299
                    self.branch.lookup_foreign_revision_id(revision_id))
 
300
        return parents
 
301
 
 
302
    def check_state(self):
 
303
        """Check that the working state is/isn't valid."""
 
304
        pass
 
305
 
 
306
    def remove(self, files, verbose=False, to_file=None, keep_files=True,
 
307
               force=False):
 
308
        """Remove nominated files from the working tree metadata.
 
309
 
 
310
        :param files: File paths relative to the basedir.
 
311
        :param keep_files: If true, the files will also be kept.
 
312
        :param force: Delete files and directories, even if they are changed
 
313
            and even if the directories are not empty.
 
314
        """
 
315
        if not isinstance(files, list):
 
316
            files = [files]
 
317
 
 
318
        if to_file is None:
 
319
            to_file = sys.stdout
 
320
 
 
321
        def backup(file_to_backup):
 
322
            abs_path = self.abspath(file_to_backup)
 
323
            backup_name = self.controldir._available_backup_name(
 
324
                file_to_backup)
 
325
            osutils.rename(abs_path, self.abspath(backup_name))
 
326
            return "removed %s (but kept a copy: %s)" % (
 
327
                file_to_backup, backup_name)
 
328
 
 
329
        # Sort needed to first handle directory content before the directory
 
330
        files_to_backup = []
 
331
 
 
332
        all_files = set()
 
333
 
 
334
        def recurse_directory_to_add_files(directory):
 
335
            # Recurse directory and add all files
 
336
            # so we can check if they have changed.
 
337
            for parent_info, file_infos in self.walkdirs(directory):
 
338
                for relpath, basename, kind, lstat, fileid, kind in file_infos:
 
339
                    # Is it versioned or ignored?
 
340
                    if self.is_versioned(relpath):
 
341
                        # Add nested content for deletion.
 
342
                        all_files.add(relpath)
 
343
                    else:
 
344
                        # Files which are not versioned
 
345
                        # should be treated as unknown.
 
346
                        files_to_backup.append(relpath)
 
347
 
 
348
        with self.lock_tree_write():
 
349
            for filepath in files:
 
350
                # Get file name into canonical form.
 
351
                abspath = self.abspath(filepath)
 
352
                filepath = self.relpath(abspath)
 
353
 
 
354
                if filepath:
 
355
                    all_files.add(filepath)
 
356
                    recurse_directory_to_add_files(filepath)
 
357
 
 
358
            files = list(all_files)
 
359
 
 
360
            if len(files) == 0:
 
361
                return  # nothing to do
 
362
 
 
363
            # Sort needed to first handle directory content before the
 
364
            # directory
 
365
            files.sort(reverse=True)
 
366
 
 
367
            # Bail out if we are going to delete files we shouldn't
 
368
            if not keep_files and not force:
 
369
                for change in self.iter_changes(
 
370
                        self.basis_tree(), include_unchanged=True,
 
371
                        require_versioned=False, want_unversioned=True,
 
372
                        specific_files=files):
 
373
                    if change.versioned[0] is False:
 
374
                        # The record is unknown or newly added
 
375
                        files_to_backup.append(change.path[1])
 
376
                        files_to_backup.extend(
 
377
                            osutils.parent_directories(change.path[1]))
 
378
                    elif (change.changed_content and (change.kind[1] is not None)
 
379
                            and osutils.is_inside_any(files, change.path[1])):
 
380
                        # Versioned and changed, but not deleted, and still
 
381
                        # in one of the dirs to be deleted.
 
382
                        files_to_backup.append(change.path[1])
 
383
                        files_to_backup.extend(
 
384
                            osutils.parent_directories(change.path[1]))
 
385
 
 
386
            for f in files:
 
387
                if f == '':
 
388
                    continue
 
389
 
 
390
                try:
 
391
                    kind = self.kind(f)
 
392
                except errors.NoSuchFile:
 
393
                    kind = None
 
394
 
 
395
                abs_path = self.abspath(f)
 
396
                if verbose:
 
397
                    # having removed it, it must be either ignored or unknown
 
398
                    if self.is_ignored(f):
 
399
                        new_status = 'I'
 
400
                    else:
 
401
                        new_status = '?'
 
402
                    kind_ch = osutils.kind_marker(kind)
 
403
                    to_file.write(new_status + '       ' + f + kind_ch + '\n')
 
404
                if kind is None:
 
405
                    message = "%s does not exist" % (f, )
 
406
                else:
 
407
                    if not keep_files:
 
408
                        if f in files_to_backup and not force:
 
409
                            message = backup(f)
 
410
                        else:
 
411
                            if kind == 'directory':
 
412
                                osutils.rmtree(abs_path)
 
413
                            else:
 
414
                                osutils.delete_any(abs_path)
 
415
                            message = "deleted %s" % (f,)
 
416
                    else:
 
417
                        message = "removed %s" % (f,)
 
418
                self._unversion_path(f)
 
419
 
 
420
                # print only one message (if any) per file.
 
421
                if message is not None:
 
422
                    trace.note(message)
 
423
            self._versioned_dirs = None
 
424
 
 
425
    def smart_add(self, file_list, recurse=True, action=None, save=True):
 
426
        if not file_list:
 
427
            file_list = [u'.']
 
428
 
 
429
        # expand any symlinks in the directory part, while leaving the
 
430
        # filename alone
 
431
        # only expanding if symlinks are supported avoids windows path bugs
 
432
        if self.supports_symlinks():
 
433
            file_list = list(map(osutils.normalizepath, file_list))
 
434
 
 
435
        conflicts_related = set()
 
436
        for c in self.conflicts():
 
437
            conflicts_related.update(c.associated_filenames())
 
438
 
 
439
        added = []
 
440
        ignored = {}
 
441
        user_dirs = []
 
442
 
 
443
        def call_action(filepath, kind):
 
444
            if filepath == '':
 
445
                return
 
446
            if action is not None:
 
447
                parent_path = posixpath.dirname(filepath)
 
448
                parent_id = self.path2id(parent_path)
 
449
                parent_ie = self._get_dir_ie(parent_path, parent_id)
 
450
                file_id = action(self, parent_ie, filepath, kind)
 
451
                if file_id is not None:
 
452
                    raise workingtree.SettingFileIdUnsupported()
 
453
 
 
454
        with self.lock_tree_write():
 
455
            for filepath in osutils.canonical_relpaths(
 
456
                    self.basedir, file_list):
 
457
                filepath, can_access = osutils.normalized_filename(filepath)
 
458
                if not can_access:
 
459
                    raise errors.InvalidNormalization(filepath)
 
460
 
 
461
                abspath = self.abspath(filepath)
 
462
                kind = osutils.file_kind(abspath)
 
463
                if kind in ("file", "symlink"):
 
464
                    (index, subpath) = self._lookup_index(
 
465
                        filepath.encode('utf-8'))
 
466
                    if subpath in index:
 
467
                        # Already present
 
468
                        continue
 
469
                    call_action(filepath, kind)
 
470
                    if save:
 
471
                        self._index_add_entry(filepath, kind)
 
472
                    added.append(filepath)
 
473
                elif kind == "directory":
 
474
                    (index, subpath) = self._lookup_index(
 
475
                        filepath.encode('utf-8'))
 
476
                    if subpath not in index:
 
477
                        call_action(filepath, kind)
 
478
                    if recurse:
 
479
                        user_dirs.append(filepath)
 
480
                else:
 
481
                    raise errors.BadFileKindError(filename=abspath, kind=kind)
 
482
            for user_dir in user_dirs:
 
483
                abs_user_dir = self.abspath(user_dir)
 
484
                if user_dir != '':
 
485
                    try:
 
486
                        transport = _mod_transport.get_transport_from_path(
 
487
                            abs_user_dir)
 
488
                        _mod_controldir.ControlDirFormat.find_format(transport)
 
489
                        subtree = True
 
490
                    except errors.NotBranchError:
 
491
                        subtree = False
 
492
                    except errors.UnsupportedFormatError:
 
493
                        subtree = False
 
494
                else:
 
495
                    subtree = False
 
496
                if subtree:
 
497
                    trace.warning('skipping nested tree %r', abs_user_dir)
 
498
                    continue
 
499
 
 
500
                for name in os.listdir(abs_user_dir):
 
501
                    subp = os.path.join(user_dir, name)
 
502
                    if (self.is_control_filename(subp) or
 
503
                            self.mapping.is_special_file(subp)):
 
504
                        continue
 
505
                    ignore_glob = self.is_ignored(subp)
 
506
                    if ignore_glob is not None:
 
507
                        ignored.setdefault(ignore_glob, []).append(subp)
 
508
                        continue
 
509
                    abspath = self.abspath(subp)
 
510
                    kind = osutils.file_kind(abspath)
 
511
                    if kind == "directory":
 
512
                        user_dirs.append(subp)
 
513
                    else:
 
514
                        (index, subpath) = self._lookup_index(
 
515
                            subp.encode('utf-8'))
 
516
                        if subpath in index:
 
517
                            # Already present
 
518
                            continue
 
519
                        if subp in conflicts_related:
 
520
                            continue
 
521
                        call_action(subp, kind)
 
522
                        if save:
 
523
                            self._index_add_entry(subp, kind)
 
524
                        added.append(subp)
 
525
            return added, ignored
 
526
 
 
527
    def has_filename(self, filename):
 
528
        return osutils.lexists(self.abspath(filename))
 
529
 
 
530
    def _iter_files_recursive(self, from_dir=None, include_dirs=False,
 
531
                              recurse_nested=False):
 
532
        if from_dir is None:
 
533
            from_dir = u""
 
534
        if not isinstance(from_dir, str):
 
535
            raise TypeError(from_dir)
 
536
        encoded_from_dir = self.abspath(from_dir).encode(osutils._fs_enc)
 
537
        for (dirpath, dirnames, filenames) in os.walk(encoded_from_dir):
 
538
            dir_relpath = dirpath[len(self.basedir):].strip(b"/")
 
539
            if self.controldir.is_control_filename(
 
540
                    dir_relpath.decode(osutils._fs_enc)):
 
541
                continue
 
542
            for name in list(dirnames):
 
543
                if self.controldir.is_control_filename(
 
544
                        name.decode(osutils._fs_enc)):
 
545
                    dirnames.remove(name)
 
546
                    continue
 
547
                relpath = os.path.join(dir_relpath, name)
 
548
                if not recurse_nested and self._directory_is_tree_reference(relpath.decode(osutils._fs_enc)):
 
549
                    dirnames.remove(name)
 
550
                if include_dirs:
 
551
                    try:
 
552
                        yield relpath.decode(osutils._fs_enc)
 
553
                    except UnicodeDecodeError:
 
554
                        raise errors.BadFilenameEncoding(
 
555
                            relpath, osutils._fs_enc)
 
556
                    if not self.is_versioned(relpath.decode(osutils._fs_enc)):
 
557
                        dirnames.remove(name)
 
558
            for name in filenames:
 
559
                if self.mapping.is_special_file(name):
 
560
                    continue
 
561
                if self.controldir.is_control_filename(
 
562
                        name.decode(osutils._fs_enc, 'replace')):
 
563
                    continue
 
564
                yp = os.path.join(dir_relpath, name)
 
565
                try:
 
566
                    yield yp.decode(osutils._fs_enc)
 
567
                except UnicodeDecodeError:
 
568
                    raise errors.BadFilenameEncoding(
 
569
                        yp, osutils._fs_enc)
 
570
 
 
571
    def extras(self):
 
572
        """Yield all unversioned files in this WorkingTree.
 
573
        """
 
574
        with self.lock_read():
 
575
            index_paths = set(
 
576
                [p.decode('utf-8') for p, i in self._recurse_index_entries()])
 
577
            all_paths = set(self._iter_files_recursive(include_dirs=False))
 
578
            return iter(all_paths - index_paths)
 
579
 
 
580
    def _gather_kinds(self, files, kinds):
 
581
        """See MutableTree._gather_kinds."""
 
582
        with self.lock_tree_write():
 
583
            for pos, f in enumerate(files):
 
584
                if kinds[pos] is None:
 
585
                    fullpath = osutils.normpath(self.abspath(f))
 
586
                    try:
 
587
                        kind = osutils.file_kind(fullpath)
 
588
                    except OSError as e:
 
589
                        if e.errno == errno.ENOENT:
 
590
                            raise errors.NoSuchFile(fullpath)
 
591
                    if f != '' and self._directory_is_tree_reference(f):
 
592
                        kind = 'tree-reference'
 
593
                    kinds[pos] = kind
 
594
 
 
595
    def flush(self):
 
596
        if self._lock_mode != 'w':
 
597
            raise errors.NotWriteLocked(self)
 
598
        # TODO(jelmer): This shouldn't be writing in-place, but index.lock is
 
599
        # already in use and GitFile doesn't allow overriding the lock file
 
600
        # name :(
 
601
        f = open(self.control_transport.local_abspath('index'), 'wb')
 
602
        # Note that _flush will close the file
 
603
        self._flush(f)
 
604
 
 
605
    def _flush(self, f):
 
606
        try:
 
607
            shaf = SHA1Writer(f)
 
608
            write_index_dict(shaf, self.index)
 
609
            shaf.close()
 
610
        except BaseException:
 
611
            f.abort()
 
612
            raise
 
613
        self._index_dirty = False
 
614
 
 
615
    def get_file_mtime(self, path):
 
616
        """See Tree.get_file_mtime."""
 
617
        try:
 
618
            return self._lstat(path).st_mtime
 
619
        except OSError as e:
 
620
            if e.errno == errno.ENOENT:
 
621
                raise errors.NoSuchFile(path)
 
622
            raise
 
623
 
 
624
    def is_ignored(self, filename):
 
625
        r"""Check whether the filename matches an ignore pattern.
 
626
 
 
627
        If the file is ignored, returns the pattern which caused it to
 
628
        be ignored, otherwise None.  So this can simply be used as a
 
629
        boolean if desired."""
 
630
        if getattr(self, '_global_ignoreglobster', None) is None:
 
631
            ignore_globs = set()
 
632
            ignore_globs.update(ignores.get_runtime_ignores())
 
633
            ignore_globs.update(ignores.get_user_ignores())
 
634
            self._global_ignoreglobster = globbing.ExceptionGlobster(
 
635
                ignore_globs)
 
636
        match = self._global_ignoreglobster.match(filename)
 
637
        if match is not None:
 
638
            return match
 
639
        try:
 
640
            if self.kind(filename) == 'directory':
 
641
                filename += '/'
 
642
        except errors.NoSuchFile:
 
643
            pass
 
644
        filename = filename.lstrip('/')
 
645
        ignore_manager = self._get_ignore_manager()
 
646
        ps = list(ignore_manager.find_matching(filename))
 
647
        if not ps:
 
648
            return None
 
649
        if not ps[-1].is_exclude:
 
650
            return None
 
651
        return bytes(ps[-1])
 
652
 
 
653
    def _get_ignore_manager(self):
 
654
        ignoremanager = getattr(self, '_ignoremanager', None)
 
655
        if ignoremanager is not None:
 
656
            return ignoremanager
 
657
 
 
658
        ignore_manager = IgnoreFilterManager.from_repo(self.repository._git)
 
659
        self._ignoremanager = ignore_manager
 
660
        return ignore_manager
 
661
 
 
662
    def _flush_ignore_list_cache(self):
 
663
        self._ignoremanager = None
 
664
 
 
665
    def set_last_revision(self, revid):
 
666
        if _mod_revision.is_null(revid):
 
667
            self.branch.set_last_revision_info(0, revid)
 
668
            return False
 
669
        _mod_revision.check_not_reserved_id(revid)
 
670
        try:
 
671
            self.branch.generate_revision_history(revid)
 
672
        except errors.NoSuchRevision:
 
673
            raise errors.GhostRevisionUnusableHere(revid)
 
674
 
 
675
    def _reset_data(self):
 
676
        pass
 
677
 
 
678
    def get_file_verifier(self, path, stat_value=None):
 
679
        with self.lock_read():
 
680
            (index, subpath) = self._lookup_index(path.encode('utf-8'))
 
681
            try:
 
682
                return ("GIT", index[subpath].sha)
 
683
            except KeyError:
 
684
                if self._has_dir(path):
 
685
                    return ("GIT", None)
 
686
                raise errors.NoSuchFile(path)
 
687
 
 
688
    def get_file_sha1(self, path, stat_value=None):
 
689
        with self.lock_read():
 
690
            if not self.is_versioned(path):
 
691
                raise errors.NoSuchFile(path)
 
692
            abspath = self.abspath(path)
 
693
            try:
 
694
                return osutils.sha_file_by_name(abspath)
 
695
            except OSError as e:
 
696
                if e.errno in (errno.EISDIR, errno.ENOENT):
 
697
                    return None
 
698
                raise
 
699
 
 
700
    def revision_tree(self, revid):
 
701
        return self.repository.revision_tree(revid)
 
702
 
 
703
    def _is_executable_from_path_and_stat_from_stat(self, path, stat_result):
 
704
        mode = stat_result.st_mode
 
705
        return bool(stat.S_ISREG(mode) and stat.S_IEXEC & mode)
 
706
 
 
707
    def _is_executable_from_path_and_stat_from_basis(self, path, stat_result):
 
708
        return self.basis_tree().is_executable(path)
 
709
 
 
710
    def stored_kind(self, path):
 
711
        with self.lock_read():
 
712
            encoded_path = path.encode('utf-8')
 
713
            (index, subpath) = self._lookup_index(encoded_path)
 
714
            try:
 
715
                return mode_kind(index[subpath].mode)
 
716
            except KeyError:
 
717
                # Maybe it's a directory?
 
718
                if self._has_dir(encoded_path):
 
719
                    return "directory"
 
720
                raise errors.NoSuchFile(path)
 
721
 
 
722
    def _lstat(self, path):
 
723
        return os.lstat(self.abspath(path))
 
724
 
 
725
    def _live_entry(self, path):
 
726
        encoded_path = self.abspath(path.decode('utf-8')).encode(
 
727
            osutils._fs_enc)
 
728
        return index_entry_from_path(encoded_path)
 
729
 
 
730
    def is_executable(self, path):
 
731
        with self.lock_read():
 
732
            if self._supports_executable():
 
733
                mode = self._lstat(path).st_mode
 
734
            else:
 
735
                (index, subpath) = self._lookup_index(path.encode('utf-8'))
 
736
                try:
 
737
                    mode = index[subpath].mode
 
738
                except KeyError:
 
739
                    mode = 0
 
740
            return bool(stat.S_ISREG(mode) and stat.S_IEXEC & mode)
 
741
 
 
742
    def _is_executable_from_path_and_stat(self, path, stat_result):
 
743
        if self._supports_executable():
 
744
            return self._is_executable_from_path_and_stat_from_stat(path, stat_result)
 
745
        else:
 
746
            return self._is_executable_from_path_and_stat_from_basis(
 
747
                path, stat_result)
 
748
 
 
749
    def list_files(self, include_root=False, from_dir=None, recursive=True,
 
750
                   recurse_nested=False):
 
751
        if from_dir is None or from_dir == '.':
 
752
            from_dir = u""
 
753
        dir_ids = {}
 
754
        fk_entries = {'directory': tree.TreeDirectory,
 
755
                      'file': tree.TreeFile,
 
756
                      'symlink': tree.TreeLink,
 
757
                      'tree-reference': tree.TreeReference}
 
758
        with self.lock_read():
 
759
            root_ie = self._get_dir_ie(u"", None)
 
760
            if include_root and not from_dir:
 
761
                yield "", "V", root_ie.kind, root_ie
 
762
            dir_ids[u""] = root_ie.file_id
 
763
            if recursive:
 
764
                path_iterator = sorted(
 
765
                    self._iter_files_recursive(
 
766
                        from_dir, include_dirs=True,
 
767
                        recurse_nested=recurse_nested))
 
768
            else:
 
769
                encoded_from_dir = self.abspath(from_dir).encode(
 
770
                    osutils._fs_enc)
 
771
                path_iterator = sorted(
 
772
                    [os.path.join(from_dir, name.decode(osutils._fs_enc))
 
773
                     for name in os.listdir(encoded_from_dir)
 
774
                     if not self.controldir.is_control_filename(
 
775
                         name.decode(osutils._fs_enc)) and
 
776
                     not self.mapping.is_special_file(
 
777
                         name.decode(osutils._fs_enc))])
 
778
            for path in path_iterator:
 
779
                try:
 
780
                    encoded_path = path.encode("utf-8")
 
781
                except UnicodeEncodeError:
 
782
                    raise errors.BadFilenameEncoding(
 
783
                        path, osutils._fs_enc)
 
784
                (index, index_path) = self._lookup_index(encoded_path)
 
785
                try:
 
786
                    value = index[index_path]
 
787
                except KeyError:
 
788
                    value = None
 
789
                kind = self.kind(path)
 
790
                parent, name = posixpath.split(path)
 
791
                for dir_path, dir_ie in self._add_missing_parent_ids(
 
792
                        parent, dir_ids):
 
793
                    pass
 
794
                if kind == 'tree-reference' and recurse_nested:
 
795
                    ie = self._get_dir_ie(path, self.path2id(path))
 
796
                    yield (posixpath.relpath(path, from_dir), 'V', 'directory',
 
797
                           ie)
 
798
                    continue
 
799
                if kind == 'directory':
 
800
                    if path != from_dir:
 
801
                        if self._has_dir(encoded_path):
 
802
                            ie = self._get_dir_ie(path, self.path2id(path))
 
803
                            status = "V"
 
804
                        elif self.is_ignored(path):
 
805
                            status = "I"
 
806
                            ie = fk_entries[kind]()
 
807
                        else:
 
808
                            status = "?"
 
809
                            ie = fk_entries[kind]()
 
810
                        yield (posixpath.relpath(path, from_dir), status, kind,
 
811
                               ie)
 
812
                    continue
 
813
                if value is not None:
 
814
                    ie = self._get_file_ie(name, path, value, dir_ids[parent])
 
815
                    yield (posixpath.relpath(path, from_dir), "V", ie.kind, ie)
 
816
                else:
 
817
                    ie = fk_entries[kind]()
 
818
                    yield (posixpath.relpath(path, from_dir),
 
819
                           ("I" if self.is_ignored(path) else "?"), kind, ie)
 
820
 
 
821
    def all_file_ids(self):
 
822
        raise errors.UnsupportedOperation(self.all_file_ids, self)
 
823
 
 
824
    def all_versioned_paths(self):
 
825
        with self.lock_read():
 
826
            paths = {u""}
 
827
            for path in self.index:
 
828
                if self.mapping.is_special_file(path):
 
829
                    continue
 
830
                path = path.decode("utf-8")
 
831
                paths.add(path)
 
832
                while path != "":
 
833
                    path = posixpath.dirname(path).strip("/")
 
834
                    if path in paths:
 
835
                        break
 
836
                    paths.add(path)
 
837
            return paths
 
838
 
 
839
    def iter_child_entries(self, path):
 
840
        encoded_path = path.encode('utf-8')
 
841
        with self.lock_read():
 
842
            parent_id = self.path2id(path)
 
843
            found_any = False
 
844
            for item_path, value in self.index.iteritems():
 
845
                decoded_item_path = item_path.decode('utf-8')
 
846
                if self.mapping.is_special_file(item_path):
 
847
                    continue
 
848
                if not osutils.is_inside(path, decoded_item_path):
 
849
                    continue
 
850
                found_any = True
 
851
                subpath = posixpath.relpath(decoded_item_path, path)
 
852
                if '/' in subpath:
 
853
                    dirname = subpath.split('/', 1)[0]
 
854
                    file_ie = self._get_dir_ie(
 
855
                        posixpath.join(path, dirname), parent_id)
 
856
                else:
 
857
                    (unused_parent, name) = posixpath.split(decoded_item_path)
 
858
                    file_ie = self._get_file_ie(
 
859
                        name, decoded_item_path, value, parent_id)
 
860
                yield file_ie
 
861
            if not found_any and path != u'':
 
862
                raise errors.NoSuchFile(path)
 
863
 
 
864
    def conflicts(self):
 
865
        with self.lock_read():
 
866
            conflicts = _mod_conflicts.ConflictList()
 
867
            for item_path, value in self.index.iteritems():
 
868
                if value.flags & FLAG_STAGEMASK:
 
869
                    conflicts.append(_mod_conflicts.TextConflict(
 
870
                        item_path.decode('utf-8')))
 
871
            return conflicts
 
872
 
 
873
    def set_conflicts(self, conflicts):
 
874
        by_path = set()
 
875
        for conflict in conflicts:
 
876
            if conflict.typestring in ('text conflict', 'contents conflict'):
 
877
                by_path.add(conflict.path.encode('utf-8'))
 
878
            else:
 
879
                raise errors.UnsupportedOperation(self.set_conflicts, self)
 
880
        with self.lock_tree_write():
 
881
            for path in self.index:
 
882
                self._set_conflicted(path, path in by_path)
 
883
 
 
884
    def _set_conflicted(self, path, conflicted):
 
885
        trace.mutter('change conflict: %r -> %r', path, conflicted)
 
886
        value = self.index[path]
 
887
        self._index_dirty = True
 
888
        if conflicted:
 
889
            self.index[path] = (value[:9] + (value[9] | FLAG_STAGEMASK, ))
 
890
        else:
 
891
            self.index[path] = (value[:9] + (value[9] & ~ FLAG_STAGEMASK, ))
 
892
 
 
893
    def add_conflicts(self, new_conflicts):
 
894
        with self.lock_tree_write():
 
895
            for conflict in new_conflicts:
 
896
                if conflict.typestring in ('text conflict',
 
897
                                           'contents conflict'):
 
898
                    try:
 
899
                        self._set_conflicted(
 
900
                            conflict.path.encode('utf-8'), True)
 
901
                    except KeyError:
 
902
                        raise errors.UnsupportedOperation(
 
903
                            self.add_conflicts, self)
 
904
                else:
 
905
                    raise errors.UnsupportedOperation(self.add_conflicts, self)
 
906
 
 
907
    def walkdirs(self, prefix=""):
 
908
        """Walk the directories of this tree.
 
909
 
 
910
        returns a generator which yields items in the form:
 
911
                ((curren_directory_path, fileid),
 
912
                 [(file1_path, file1_name, file1_kind, (lstat), file1_id,
 
913
                   file1_kind), ... ])
 
914
 
 
915
        This API returns a generator, which is only valid during the current
 
916
        tree transaction - within a single lock_read or lock_write duration.
 
917
 
 
918
        If the tree is not locked, it may cause an error to be raised,
 
919
        depending on the tree implementation.
 
920
        """
 
921
        from bisect import bisect_left
 
922
        import operator
 
923
        disk_top = self.abspath(prefix)
 
924
        if disk_top.endswith('/'):
 
925
            disk_top = disk_top[:-1]
 
926
        top_strip_len = len(disk_top) + 1
 
927
        inventory_iterator = self._walkdirs(prefix)
 
928
        disk_iterator = osutils.walkdirs(disk_top, prefix)
 
929
        try:
 
930
            current_disk = next(disk_iterator)
 
931
            disk_finished = False
 
932
        except OSError as e:
 
933
            if not (e.errno == errno.ENOENT
 
934
                    or (sys.platform == 'win32' and e.errno == ERROR_PATH_NOT_FOUND)):
 
935
                raise
 
936
            current_disk = None
 
937
            disk_finished = True
 
938
        try:
 
939
            current_inv = next(inventory_iterator)
 
940
            inv_finished = False
 
941
        except StopIteration:
 
942
            current_inv = None
 
943
            inv_finished = True
 
944
        while not inv_finished or not disk_finished:
 
945
            if current_disk:
 
946
                ((cur_disk_dir_relpath, cur_disk_dir_path_from_top),
 
947
                    cur_disk_dir_content) = current_disk
 
948
            else:
 
949
                ((cur_disk_dir_relpath, cur_disk_dir_path_from_top),
 
950
                    cur_disk_dir_content) = ((None, None), None)
 
951
            if not disk_finished:
 
952
                # strip out .bzr dirs
 
953
                if (cur_disk_dir_path_from_top[top_strip_len:] == ''
 
954
                        and len(cur_disk_dir_content) > 0):
 
955
                    # osutils.walkdirs can be made nicer -
 
956
                    # yield the path-from-prefix rather than the pathjoined
 
957
                    # value.
 
958
                    bzrdir_loc = bisect_left(cur_disk_dir_content,
 
959
                                             ('.git', '.git'))
 
960
                    if (bzrdir_loc < len(cur_disk_dir_content) and
 
961
                        self.controldir.is_control_filename(
 
962
                            cur_disk_dir_content[bzrdir_loc][0])):
 
963
                        # we dont yield the contents of, or, .bzr itself.
 
964
                        del cur_disk_dir_content[bzrdir_loc]
 
965
            if inv_finished:
 
966
                # everything is unknown
 
967
                direction = 1
 
968
            elif disk_finished:
 
969
                # everything is missing
 
970
                direction = -1
 
971
            else:
 
972
                direction = ((current_inv[0][0] > cur_disk_dir_relpath)
 
973
                             - (current_inv[0][0] < cur_disk_dir_relpath))
 
974
            if direction > 0:
 
975
                # disk is before inventory - unknown
 
976
                dirblock = [(relpath, basename, kind, stat, None, None) for
 
977
                            relpath, basename, kind, stat, top_path in
 
978
                            cur_disk_dir_content]
 
979
                yield (cur_disk_dir_relpath, None), dirblock
 
980
                try:
 
981
                    current_disk = next(disk_iterator)
 
982
                except StopIteration:
 
983
                    disk_finished = True
 
984
            elif direction < 0:
 
985
                # inventory is before disk - missing.
 
986
                dirblock = [(relpath, basename, 'unknown', None, fileid, kind)
 
987
                            for relpath, basename, dkind, stat, fileid, kind in
 
988
                            current_inv[1]]
 
989
                yield (current_inv[0][0], current_inv[0][1]), dirblock
 
990
                try:
 
991
                    current_inv = next(inventory_iterator)
 
992
                except StopIteration:
 
993
                    inv_finished = True
 
994
            else:
 
995
                # versioned present directory
 
996
                # merge the inventory and disk data together
 
997
                dirblock = []
 
998
                for relpath, subiterator in itertools.groupby(sorted(
 
999
                        current_inv[1] + cur_disk_dir_content,
 
1000
                        key=operator.itemgetter(0)), operator.itemgetter(1)):
 
1001
                    path_elements = list(subiterator)
 
1002
                    if len(path_elements) == 2:
 
1003
                        inv_row, disk_row = path_elements
 
1004
                        # versioned, present file
 
1005
                        dirblock.append((inv_row[0],
 
1006
                                         inv_row[1], disk_row[2],
 
1007
                                         disk_row[3], inv_row[4],
 
1008
                                         inv_row[5]))
 
1009
                    elif len(path_elements[0]) == 5:
 
1010
                        # unknown disk file
 
1011
                        dirblock.append(
 
1012
                            (path_elements[0][0], path_elements[0][1],
 
1013
                                path_elements[0][2], path_elements[0][3],
 
1014
                                None, None))
 
1015
                    elif len(path_elements[0]) == 6:
 
1016
                        # versioned, absent file.
 
1017
                        dirblock.append(
 
1018
                            (path_elements[0][0], path_elements[0][1],
 
1019
                                'unknown', None, path_elements[0][4],
 
1020
                                path_elements[0][5]))
 
1021
                    else:
 
1022
                        raise NotImplementedError('unreachable code')
 
1023
                yield current_inv[0], dirblock
 
1024
                try:
 
1025
                    current_inv = next(inventory_iterator)
 
1026
                except StopIteration:
 
1027
                    inv_finished = True
 
1028
                try:
 
1029
                    current_disk = next(disk_iterator)
 
1030
                except StopIteration:
 
1031
                    disk_finished = True
 
1032
 
 
1033
    def _walkdirs(self, prefix=u""):
 
1034
        if prefix != u"":
 
1035
            prefix += u"/"
 
1036
        prefix = prefix.encode('utf-8')
 
1037
        per_dir = defaultdict(set)
 
1038
        if prefix == b"":
 
1039
            per_dir[(u'', self.path2id(''))] = set()
 
1040
 
 
1041
        def add_entry(path, kind):
 
1042
            if path == b'' or not path.startswith(prefix):
 
1043
                return
 
1044
            (dirname, child_name) = posixpath.split(path)
 
1045
            add_entry(dirname, 'directory')
 
1046
            dirname = dirname.decode("utf-8")
 
1047
            dir_file_id = self.path2id(dirname)
 
1048
            if not isinstance(value, tuple) or len(value) != 10:
 
1049
                raise ValueError(value)
 
1050
            per_dir[(dirname, dir_file_id)].add(
 
1051
                (path.decode("utf-8"), child_name.decode("utf-8"),
 
1052
                 kind, None,
 
1053
                 self.path2id(path.decode("utf-8")),
 
1054
                 kind))
 
1055
        with self.lock_read():
 
1056
            for path, value in self.index.iteritems():
 
1057
                if self.mapping.is_special_file(path):
 
1058
                    continue
 
1059
                if not path.startswith(prefix):
 
1060
                    continue
 
1061
                add_entry(path, mode_kind(value.mode))
 
1062
        return ((k, sorted(v)) for (k, v) in sorted(per_dir.items()))
 
1063
 
 
1064
    def get_shelf_manager(self):
 
1065
        raise workingtree.ShelvingUnsupported()
 
1066
 
 
1067
    def store_uncommitted(self):
 
1068
        raise errors.StoringUncommittedNotSupported(self)
 
1069
 
 
1070
    def apply_inventory_delta(self, changes):
 
1071
        for (old_path, new_path, file_id, ie) in changes:
 
1072
            if old_path is not None:
 
1073
                (index, old_subpath) = self._lookup_index(
 
1074
                    old_path.encode('utf-8'))
 
1075
                try:
 
1076
                    self._index_del_entry(index, old_subpath)
 
1077
                except KeyError:
 
1078
                    pass
 
1079
                else:
 
1080
                    self._versioned_dirs = None
 
1081
            if new_path is not None and ie.kind != 'directory':
 
1082
                if ie.kind == 'tree-reference':
 
1083
                    self._index_add_entry(
 
1084
                        new_path, ie.kind,
 
1085
                        reference_revision=ie.reference_revision)
 
1086
                else:
 
1087
                    self._index_add_entry(new_path, ie.kind)
 
1088
        self.flush()
 
1089
 
 
1090
    def annotate_iter(self, path,
 
1091
                      default_revision=_mod_revision.CURRENT_REVISION):
 
1092
        """See Tree.annotate_iter
 
1093
 
 
1094
        This implementation will use the basis tree implementation if possible.
 
1095
        Lines not in the basis are attributed to CURRENT_REVISION
 
1096
 
 
1097
        If there are pending merges, lines added by those merges will be
 
1098
        incorrectly attributed to CURRENT_REVISION (but after committing, the
 
1099
        attribution will be correct).
 
1100
        """
 
1101
        with self.lock_read():
 
1102
            maybe_file_parent_keys = []
 
1103
            for parent_id in self.get_parent_ids():
 
1104
                try:
 
1105
                    parent_tree = self.revision_tree(parent_id)
 
1106
                except errors.NoSuchRevisionInTree:
 
1107
                    parent_tree = self.branch.repository.revision_tree(
 
1108
                        parent_id)
 
1109
                with parent_tree.lock_read():
 
1110
                    # TODO(jelmer): Use rename/copy tracker to find path name
 
1111
                    # in parent
 
1112
                    parent_path = path
 
1113
                    try:
 
1114
                        kind = parent_tree.kind(parent_path)
 
1115
                    except errors.NoSuchFile:
 
1116
                        continue
 
1117
                    if kind != 'file':
 
1118
                        # Note: this is slightly unnecessary, because symlinks
 
1119
                        # and directories have a "text" which is the empty
 
1120
                        # text, and we know that won't mess up annotations. But
 
1121
                        # it seems cleaner
 
1122
                        continue
 
1123
                    parent_text_key = (
 
1124
                        parent_path,
 
1125
                        parent_tree.get_file_revision(parent_path))
 
1126
                    if parent_text_key not in maybe_file_parent_keys:
 
1127
                        maybe_file_parent_keys.append(parent_text_key)
 
1128
            # Now we have the parents of this content
 
1129
            from breezy.annotate import Annotator
 
1130
            from .annotate import AnnotateProvider
 
1131
            annotate_provider = AnnotateProvider(
 
1132
                self.branch.repository._file_change_scanner)
 
1133
            annotator = Annotator(annotate_provider)
 
1134
 
 
1135
            from breezy.graph import Graph
 
1136
            graph = Graph(annotate_provider)
 
1137
            heads = graph.heads(maybe_file_parent_keys)
 
1138
            file_parent_keys = []
 
1139
            for key in maybe_file_parent_keys:
 
1140
                if key in heads:
 
1141
                    file_parent_keys.append(key)
 
1142
 
 
1143
            text = self.get_file_text(path)
 
1144
            this_key = (path, default_revision)
 
1145
            annotator.add_special_text(this_key, file_parent_keys, text)
 
1146
            annotations = [(key[-1], line)
 
1147
                           for key, line in annotator.annotate_flat(this_key)]
 
1148
            return annotations
 
1149
 
 
1150
    def _rename_one(self, from_rel, to_rel):
 
1151
        os.rename(self.abspath(from_rel), self.abspath(to_rel))
 
1152
 
 
1153
    def _build_checkout_with_index(self):
 
1154
        build_index_from_tree(
 
1155
            self.user_transport.local_abspath('.'),
 
1156
            self.control_transport.local_abspath("index"),
 
1157
            self.store,
 
1158
            None
 
1159
            if self.branch.head is None
 
1160
            else self.store[self.branch.head].tree,
 
1161
            honor_filemode=self._supports_executable())
 
1162
 
 
1163
    def reset_state(self, revision_ids=None):
 
1164
        """Reset the state of the working tree.
 
1165
 
 
1166
        This does a hard-reset to a last-known-good state. This is a way to
 
1167
        fix if something got corrupted (like the .git/index file)
 
1168
        """
 
1169
        with self.lock_tree_write():
 
1170
            if revision_ids is not None:
 
1171
                self.set_parent_ids(revision_ids)
 
1172
            self.index.clear()
 
1173
            self._index_dirty = True
 
1174
            if self.branch.head is not None:
 
1175
                for entry in self.store.iter_tree_contents(
 
1176
                        self.store[self.branch.head].tree):
 
1177
                    if not validate_path(entry.path):
 
1178
                        continue
 
1179
 
 
1180
                    if S_ISGITLINK(entry.mode):
 
1181
                        pass  # TODO(jelmer): record and return submodule paths
 
1182
                    else:
 
1183
                        # Let's at least try to use the working tree file:
 
1184
                        try:
 
1185
                            st = self._lstat(self.abspath(
 
1186
                                entry.path.decode('utf-8')))
 
1187
                        except OSError:
 
1188
                            # But if it doesn't exist, we'll make something up.
 
1189
                            obj = self.store[entry.sha]
 
1190
                            st = os.stat_result((entry.mode, 0, 0, 0,
 
1191
                                                 0, 0, len(
 
1192
                                                     obj.as_raw_string()), 0,
 
1193
                                                 0, 0))
 
1194
                    (index, subpath) = self._lookup_index(entry.path)
 
1195
                    index[subpath] = index_entry_from_stat(st, entry.sha, 0)
 
1196
 
 
1197
    def _update_git_tree(self, old_revision, new_revision, change_reporter=None,
 
1198
                         show_base=False):
 
1199
        basis_tree = self.revision_tree(old_revision)
 
1200
        if new_revision != old_revision:
 
1201
            with basis_tree.lock_read():
 
1202
                new_basis_tree = self.branch.basis_tree()
 
1203
                merge.merge_inner(
 
1204
                    self.branch,
 
1205
                    new_basis_tree,
 
1206
                    basis_tree,
 
1207
                    this_tree=self,
 
1208
                    change_reporter=change_reporter,
 
1209
                    show_base=show_base)
 
1210
 
 
1211
    def pull(self, source, overwrite=False, stop_revision=None,
 
1212
             change_reporter=None, possible_transports=None, local=False,
 
1213
             show_base=False, tag_selector=None):
 
1214
        with self.lock_write(), source.lock_read():
 
1215
            old_revision = self.branch.last_revision()
 
1216
            count = self.branch.pull(source, overwrite, stop_revision,
 
1217
                                     possible_transports=possible_transports,
 
1218
                                     local=local, tag_selector=tag_selector)
 
1219
            self._update_git_tree(
 
1220
                old_revision=old_revision,
 
1221
                new_revision=self.branch.last_revision(),
 
1222
                change_reporter=change_reporter,
 
1223
                show_base=show_base)
 
1224
            return count
 
1225
 
 
1226
    def add_reference(self, sub_tree):
 
1227
        """Add a TreeReference to the tree, pointing at sub_tree.
 
1228
 
 
1229
        :param sub_tree: subtree to add.
 
1230
        """
 
1231
        with self.lock_tree_write():
 
1232
            try:
 
1233
                sub_tree_path = self.relpath(sub_tree.basedir)
 
1234
            except errors.PathNotChild:
 
1235
                raise BadReferenceTarget(
 
1236
                    self, sub_tree, 'Target not inside tree.')
 
1237
 
 
1238
            self._add([sub_tree_path], [None], ['tree-reference'])
 
1239
 
 
1240
    def _read_submodule_head(self, path):
 
1241
        return read_submodule_head(self.abspath(path))
 
1242
 
 
1243
    def get_reference_revision(self, path, branch=None):
 
1244
        hexsha = self._read_submodule_head(path)
 
1245
        if hexsha is None:
 
1246
            return _mod_revision.NULL_REVISION
 
1247
        return self.branch.lookup_foreign_revision_id(hexsha)
 
1248
 
 
1249
    def get_nested_tree(self, path):
 
1250
        return workingtree.WorkingTree.open(self.abspath(path))
 
1251
 
 
1252
    def _directory_is_tree_reference(self, relpath):
 
1253
        # as a special case, if a directory contains control files then
 
1254
        # it's a tree reference, except that the root of the tree is not
 
1255
        return relpath and osutils.lexists(self.abspath(relpath) + u"/.git")
 
1256
 
 
1257
    def extract(self, sub_path, format=None):
 
1258
        """Extract a subtree from this tree.
 
1259
 
 
1260
        A new branch will be created, relative to the path for this tree.
 
1261
        """
 
1262
        def mkdirs(path):
 
1263
            segments = osutils.splitpath(path)
 
1264
            transport = self.branch.controldir.root_transport
 
1265
            for name in segments:
 
1266
                transport = transport.clone(name)
 
1267
                transport.ensure_base()
 
1268
            return transport
 
1269
 
 
1270
        with self.lock_tree_write():
 
1271
            self.flush()
 
1272
            branch_transport = mkdirs(sub_path)
 
1273
            if format is None:
 
1274
                format = self.controldir.cloning_metadir()
 
1275
            branch_transport.ensure_base()
 
1276
            branch_bzrdir = format.initialize_on_transport(branch_transport)
 
1277
            try:
 
1278
                repo = branch_bzrdir.find_repository()
 
1279
            except errors.NoRepositoryPresent:
 
1280
                repo = branch_bzrdir.create_repository()
 
1281
            if not repo.supports_rich_root():
 
1282
                raise errors.RootNotRich()
 
1283
            new_branch = branch_bzrdir.create_branch()
 
1284
            new_branch.pull(self.branch)
 
1285
            for parent_id in self.get_parent_ids():
 
1286
                new_branch.fetch(self.branch, parent_id)
 
1287
            tree_transport = self.controldir.root_transport.clone(sub_path)
 
1288
            if tree_transport.base != branch_transport.base:
 
1289
                tree_bzrdir = format.initialize_on_transport(tree_transport)
 
1290
                tree_bzrdir.set_branch_reference(new_branch)
 
1291
            else:
 
1292
                tree_bzrdir = branch_bzrdir
 
1293
            wt = tree_bzrdir.create_workingtree(_mod_revision.NULL_REVISION)
 
1294
            wt.set_parent_ids(self.get_parent_ids())
 
1295
            return wt
 
1296
 
 
1297
    def _get_check_refs(self):
 
1298
        """Return the references needed to perform a check of this tree.
 
1299
 
 
1300
        The default implementation returns no refs, and is only suitable for
 
1301
        trees that have no local caching and can commit on ghosts at any time.
 
1302
 
 
1303
        :seealso: breezy.check for details about check_refs.
 
1304
        """
 
1305
        return []
 
1306
 
 
1307
    def copy_content_into(self, tree, revision_id=None):
 
1308
        """Copy the current content and user files of this tree into tree."""
 
1309
        with self.lock_read():
 
1310
            if revision_id is None:
 
1311
                merge.transform_tree(tree, self)
 
1312
            else:
 
1313
                # TODO now merge from tree.last_revision to revision (to
 
1314
                # preserve user local changes)
 
1315
                try:
 
1316
                    other_tree = self.revision_tree(revision_id)
 
1317
                except errors.NoSuchRevision:
 
1318
                    other_tree = self.branch.repository.revision_tree(
 
1319
                        revision_id)
 
1320
 
 
1321
                merge.transform_tree(tree, other_tree)
 
1322
                if revision_id == _mod_revision.NULL_REVISION:
 
1323
                    new_parents = []
 
1324
                else:
 
1325
                    new_parents = [revision_id]
 
1326
                tree.set_parent_ids(new_parents)
 
1327
 
 
1328
    def reference_parent(self, path, possible_transports=None):
 
1329
        remote_url = self.get_reference_info(path)
 
1330
        if remote_url is None:
 
1331
            trace.warning("Unable to find submodule info for %s", path)
 
1332
            return None
 
1333
        return _mod_branch.Branch.open(remote_url, possible_transports=possible_transports)
 
1334
 
 
1335
    def get_reference_info(self, path):
 
1336
        submodule_info = self._submodule_info()
 
1337
        info = submodule_info.get(path.encode('utf-8'))
 
1338
        if info is None:
 
1339
            return None
 
1340
        return info[0].decode('utf-8')
 
1341
 
 
1342
    def set_reference_info(self, tree_path, branch_location):
 
1343
        path = self.abspath('.gitmodules')
 
1344
        try:
 
1345
            config = GitConfigFile.from_path(path)
 
1346
        except EnvironmentError as e:
 
1347
            if e.errno == errno.ENOENT:
 
1348
                config = GitConfigFile()
 
1349
            else:
 
1350
                raise
 
1351
        section = (b'submodule', tree_path.encode('utf-8'))
 
1352
        if branch_location is None:
 
1353
            try:
 
1354
                del config[section]
 
1355
            except KeyError:
 
1356
                pass
 
1357
        else:
 
1358
            branch_location = urlutils.join(
 
1359
                urlutils.strip_segment_parameters(self.branch.user_url),
 
1360
                branch_location)
 
1361
            config.set(
 
1362
                section,
 
1363
                b'path', tree_path.encode('utf-8'))
 
1364
            config.set(
 
1365
                section,
 
1366
                b'url', branch_location.encode('utf-8'))
 
1367
        config.write_to_path(path)
 
1368
        self.add('.gitmodules')
 
1369
 
 
1370
 
 
1371
class GitWorkingTreeFormat(workingtree.WorkingTreeFormat):
 
1372
 
 
1373
    _tree_class = GitWorkingTree
 
1374
 
 
1375
    supports_versioned_directories = False
 
1376
 
 
1377
    supports_setting_file_ids = False
 
1378
 
 
1379
    supports_store_uncommitted = False
 
1380
 
 
1381
    supports_leftmost_parent_id_as_ghost = False
 
1382
 
 
1383
    supports_righthand_parent_id_as_ghost = False
 
1384
 
 
1385
    requires_normalized_unicode_filenames = True
 
1386
 
 
1387
    supports_merge_modified = False
 
1388
 
 
1389
    ignore_filename = ".gitignore"
 
1390
 
 
1391
    @property
 
1392
    def _matchingcontroldir(self):
 
1393
        from .dir import LocalGitControlDirFormat
 
1394
        return LocalGitControlDirFormat()
 
1395
 
 
1396
    def get_format_description(self):
 
1397
        return "Git Working Tree"
 
1398
 
 
1399
    def initialize(self, a_controldir, revision_id=None, from_branch=None,
 
1400
                   accelerator_tree=None, hardlink=False):
 
1401
        """See WorkingTreeFormat.initialize()."""
 
1402
        if not isinstance(a_controldir, LocalGitDir):
 
1403
            raise errors.IncompatibleFormat(self, a_controldir)
 
1404
        branch = a_controldir.open_branch(nascent_ok=True)
 
1405
        if revision_id is not None:
 
1406
            branch.set_last_revision(revision_id)
 
1407
        wt = GitWorkingTree(
 
1408
            a_controldir, a_controldir.open_repository(), branch)
 
1409
        for hook in MutableTree.hooks['post_build_tree']:
 
1410
            hook(wt)
 
1411
        return wt