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  • Committer: Jelmer Vernooij
  • Date: 2020-05-06 02:13:25 UTC
  • mfrom: (7490.7.21 work)
  • mto: This revision was merged to the branch mainline in revision 7501.
  • Revision ID: jelmer@jelmer.uk-20200506021325-awbmmqu1zyorz7sj
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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].decode('utf-8'), '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
                    try:
 
818
                        ie = fk_entries[kind]()
 
819
                    except KeyError:
 
820
                        # unsupported kind
 
821
                        continue
 
822
                    yield (posixpath.relpath(path, from_dir),
 
823
                           ("I" if self.is_ignored(path) else "?"), kind, ie)
 
824
 
 
825
    def all_file_ids(self):
 
826
        raise errors.UnsupportedOperation(self.all_file_ids, self)
 
827
 
 
828
    def all_versioned_paths(self):
 
829
        with self.lock_read():
 
830
            paths = {u""}
 
831
            for path in self.index:
 
832
                if self.mapping.is_special_file(path):
 
833
                    continue
 
834
                path = path.decode("utf-8")
 
835
                paths.add(path)
 
836
                while path != "":
 
837
                    path = posixpath.dirname(path).strip("/")
 
838
                    if path in paths:
 
839
                        break
 
840
                    paths.add(path)
 
841
            return paths
 
842
 
 
843
    def iter_child_entries(self, path):
 
844
        encoded_path = path.encode('utf-8')
 
845
        with self.lock_read():
 
846
            parent_id = self.path2id(path)
 
847
            found_any = False
 
848
            for item_path, value in self.index.iteritems():
 
849
                decoded_item_path = item_path.decode('utf-8')
 
850
                if self.mapping.is_special_file(item_path):
 
851
                    continue
 
852
                if not osutils.is_inside(path, decoded_item_path):
 
853
                    continue
 
854
                found_any = True
 
855
                subpath = posixpath.relpath(decoded_item_path, path)
 
856
                if '/' in subpath:
 
857
                    dirname = subpath.split('/', 1)[0]
 
858
                    file_ie = self._get_dir_ie(
 
859
                        posixpath.join(path, dirname), parent_id)
 
860
                else:
 
861
                    (unused_parent, name) = posixpath.split(decoded_item_path)
 
862
                    file_ie = self._get_file_ie(
 
863
                        name, decoded_item_path, value, parent_id)
 
864
                yield file_ie
 
865
            if not found_any and path != u'':
 
866
                raise errors.NoSuchFile(path)
 
867
 
 
868
    def conflicts(self):
 
869
        with self.lock_read():
 
870
            conflicts = _mod_conflicts.ConflictList()
 
871
            for item_path, value in self.index.iteritems():
 
872
                if value.flags & FLAG_STAGEMASK:
 
873
                    conflicts.append(_mod_conflicts.TextConflict(
 
874
                        item_path.decode('utf-8')))
 
875
            return conflicts
 
876
 
 
877
    def set_conflicts(self, conflicts):
 
878
        by_path = set()
 
879
        for conflict in conflicts:
 
880
            if conflict.typestring in ('text conflict', 'contents conflict'):
 
881
                by_path.add(conflict.path.encode('utf-8'))
 
882
            else:
 
883
                raise errors.UnsupportedOperation(self.set_conflicts, self)
 
884
        with self.lock_tree_write():
 
885
            for path in self.index:
 
886
                self._set_conflicted(path, path in by_path)
 
887
 
 
888
    def _set_conflicted(self, path, conflicted):
 
889
        trace.mutter('change conflict: %r -> %r', path, conflicted)
 
890
        value = self.index[path]
 
891
        self._index_dirty = True
 
892
        if conflicted:
 
893
            self.index[path] = (value[:9] + (value[9] | FLAG_STAGEMASK, ))
 
894
        else:
 
895
            self.index[path] = (value[:9] + (value[9] & ~ FLAG_STAGEMASK, ))
 
896
 
 
897
    def add_conflicts(self, new_conflicts):
 
898
        with self.lock_tree_write():
 
899
            for conflict in new_conflicts:
 
900
                if conflict.typestring in ('text conflict',
 
901
                                           'contents conflict'):
 
902
                    try:
 
903
                        self._set_conflicted(
 
904
                            conflict.path.encode('utf-8'), True)
 
905
                    except KeyError:
 
906
                        raise errors.UnsupportedOperation(
 
907
                            self.add_conflicts, self)
 
908
                else:
 
909
                    raise errors.UnsupportedOperation(self.add_conflicts, self)
 
910
 
 
911
    def walkdirs(self, prefix=""):
 
912
        """Walk the directories of this tree.
 
913
 
 
914
        returns a generator which yields items in the form:
 
915
                ((curren_directory_path, fileid),
 
916
                 [(file1_path, file1_name, file1_kind, (lstat), file1_id,
 
917
                   file1_kind), ... ])
 
918
 
 
919
        This API returns a generator, which is only valid during the current
 
920
        tree transaction - within a single lock_read or lock_write duration.
 
921
 
 
922
        If the tree is not locked, it may cause an error to be raised,
 
923
        depending on the tree implementation.
 
924
        """
 
925
        from bisect import bisect_left
 
926
        import operator
 
927
        disk_top = self.abspath(prefix)
 
928
        if disk_top.endswith('/'):
 
929
            disk_top = disk_top[:-1]
 
930
        top_strip_len = len(disk_top) + 1
 
931
        inventory_iterator = self._walkdirs(prefix)
 
932
        disk_iterator = osutils.walkdirs(disk_top, prefix)
 
933
        try:
 
934
            current_disk = next(disk_iterator)
 
935
            disk_finished = False
 
936
        except OSError as e:
 
937
            if not (e.errno == errno.ENOENT
 
938
                    or (sys.platform == 'win32' and e.errno == ERROR_PATH_NOT_FOUND)):
 
939
                raise
 
940
            current_disk = None
 
941
            disk_finished = True
 
942
        try:
 
943
            current_inv = next(inventory_iterator)
 
944
            inv_finished = False
 
945
        except StopIteration:
 
946
            current_inv = None
 
947
            inv_finished = True
 
948
        while not inv_finished or not disk_finished:
 
949
            if current_disk:
 
950
                ((cur_disk_dir_relpath, cur_disk_dir_path_from_top),
 
951
                    cur_disk_dir_content) = current_disk
 
952
            else:
 
953
                ((cur_disk_dir_relpath, cur_disk_dir_path_from_top),
 
954
                    cur_disk_dir_content) = ((None, None), None)
 
955
            if not disk_finished:
 
956
                # strip out .bzr dirs
 
957
                if (cur_disk_dir_path_from_top[top_strip_len:] == ''
 
958
                        and len(cur_disk_dir_content) > 0):
 
959
                    # osutils.walkdirs can be made nicer -
 
960
                    # yield the path-from-prefix rather than the pathjoined
 
961
                    # value.
 
962
                    bzrdir_loc = bisect_left(cur_disk_dir_content,
 
963
                                             ('.git', '.git'))
 
964
                    if (bzrdir_loc < len(cur_disk_dir_content) and
 
965
                        self.controldir.is_control_filename(
 
966
                            cur_disk_dir_content[bzrdir_loc][0])):
 
967
                        # we dont yield the contents of, or, .bzr itself.
 
968
                        del cur_disk_dir_content[bzrdir_loc]
 
969
            if inv_finished:
 
970
                # everything is unknown
 
971
                direction = 1
 
972
            elif disk_finished:
 
973
                # everything is missing
 
974
                direction = -1
 
975
            else:
 
976
                direction = ((current_inv[0][0] > cur_disk_dir_relpath)
 
977
                             - (current_inv[0][0] < cur_disk_dir_relpath))
 
978
            if direction > 0:
 
979
                # disk is before inventory - unknown
 
980
                dirblock = [(relpath, basename, kind, stat, None, None) for
 
981
                            relpath, basename, kind, stat, top_path in
 
982
                            cur_disk_dir_content]
 
983
                yield (cur_disk_dir_relpath, None), dirblock
 
984
                try:
 
985
                    current_disk = next(disk_iterator)
 
986
                except StopIteration:
 
987
                    disk_finished = True
 
988
            elif direction < 0:
 
989
                # inventory is before disk - missing.
 
990
                dirblock = [(relpath, basename, 'unknown', None, fileid, kind)
 
991
                            for relpath, basename, dkind, stat, fileid, kind in
 
992
                            current_inv[1]]
 
993
                yield (current_inv[0][0], current_inv[0][1]), dirblock
 
994
                try:
 
995
                    current_inv = next(inventory_iterator)
 
996
                except StopIteration:
 
997
                    inv_finished = True
 
998
            else:
 
999
                # versioned present directory
 
1000
                # merge the inventory and disk data together
 
1001
                dirblock = []
 
1002
                for relpath, subiterator in itertools.groupby(sorted(
 
1003
                        current_inv[1] + cur_disk_dir_content,
 
1004
                        key=operator.itemgetter(0)), operator.itemgetter(1)):
 
1005
                    path_elements = list(subiterator)
 
1006
                    if len(path_elements) == 2:
 
1007
                        inv_row, disk_row = path_elements
 
1008
                        # versioned, present file
 
1009
                        dirblock.append((inv_row[0],
 
1010
                                         inv_row[1], disk_row[2],
 
1011
                                         disk_row[3], inv_row[4],
 
1012
                                         inv_row[5]))
 
1013
                    elif len(path_elements[0]) == 5:
 
1014
                        # unknown disk file
 
1015
                        dirblock.append(
 
1016
                            (path_elements[0][0], path_elements[0][1],
 
1017
                                path_elements[0][2], path_elements[0][3],
 
1018
                                None, None))
 
1019
                    elif len(path_elements[0]) == 6:
 
1020
                        # versioned, absent file.
 
1021
                        dirblock.append(
 
1022
                            (path_elements[0][0], path_elements[0][1],
 
1023
                                'unknown', None, path_elements[0][4],
 
1024
                                path_elements[0][5]))
 
1025
                    else:
 
1026
                        raise NotImplementedError('unreachable code')
 
1027
                yield current_inv[0], dirblock
 
1028
                try:
 
1029
                    current_inv = next(inventory_iterator)
 
1030
                except StopIteration:
 
1031
                    inv_finished = True
 
1032
                try:
 
1033
                    current_disk = next(disk_iterator)
 
1034
                except StopIteration:
 
1035
                    disk_finished = True
 
1036
 
 
1037
    def _walkdirs(self, prefix=u""):
 
1038
        if prefix != u"":
 
1039
            prefix += u"/"
 
1040
        prefix = prefix.encode('utf-8')
 
1041
        per_dir = defaultdict(set)
 
1042
        if prefix == b"":
 
1043
            per_dir[(u'', self.path2id(''))] = set()
 
1044
 
 
1045
        def add_entry(path, kind):
 
1046
            if path == b'' or not path.startswith(prefix):
 
1047
                return
 
1048
            (dirname, child_name) = posixpath.split(path)
 
1049
            add_entry(dirname, 'directory')
 
1050
            dirname = dirname.decode("utf-8")
 
1051
            dir_file_id = self.path2id(dirname)
 
1052
            if not isinstance(value, tuple) or len(value) != 10:
 
1053
                raise ValueError(value)
 
1054
            per_dir[(dirname, dir_file_id)].add(
 
1055
                (path.decode("utf-8"), child_name.decode("utf-8"),
 
1056
                 kind, None,
 
1057
                 self.path2id(path.decode("utf-8")),
 
1058
                 kind))
 
1059
        with self.lock_read():
 
1060
            for path, value in self.index.iteritems():
 
1061
                if self.mapping.is_special_file(path):
 
1062
                    continue
 
1063
                if not path.startswith(prefix):
 
1064
                    continue
 
1065
                add_entry(path, mode_kind(value.mode))
 
1066
        return ((k, sorted(v)) for (k, v) in sorted(per_dir.items()))
 
1067
 
 
1068
    def get_shelf_manager(self):
 
1069
        raise workingtree.ShelvingUnsupported()
 
1070
 
 
1071
    def store_uncommitted(self):
 
1072
        raise errors.StoringUncommittedNotSupported(self)
 
1073
 
 
1074
    def apply_inventory_delta(self, changes):
 
1075
        for (old_path, new_path, file_id, ie) in changes:
 
1076
            if old_path is not None:
 
1077
                (index, old_subpath) = self._lookup_index(
 
1078
                    old_path.encode('utf-8'))
 
1079
                try:
 
1080
                    self._index_del_entry(index, old_subpath)
 
1081
                except KeyError:
 
1082
                    pass
 
1083
                else:
 
1084
                    self._versioned_dirs = None
 
1085
            if new_path is not None and ie.kind != 'directory':
 
1086
                if ie.kind == 'tree-reference':
 
1087
                    self._index_add_entry(
 
1088
                        new_path, ie.kind,
 
1089
                        reference_revision=ie.reference_revision)
 
1090
                else:
 
1091
                    self._index_add_entry(new_path, ie.kind)
 
1092
        self.flush()
 
1093
 
 
1094
    def annotate_iter(self, path,
 
1095
                      default_revision=_mod_revision.CURRENT_REVISION):
 
1096
        """See Tree.annotate_iter
 
1097
 
 
1098
        This implementation will use the basis tree implementation if possible.
 
1099
        Lines not in the basis are attributed to CURRENT_REVISION
 
1100
 
 
1101
        If there are pending merges, lines added by those merges will be
 
1102
        incorrectly attributed to CURRENT_REVISION (but after committing, the
 
1103
        attribution will be correct).
 
1104
        """
 
1105
        with self.lock_read():
 
1106
            maybe_file_parent_keys = []
 
1107
            for parent_id in self.get_parent_ids():
 
1108
                try:
 
1109
                    parent_tree = self.revision_tree(parent_id)
 
1110
                except errors.NoSuchRevisionInTree:
 
1111
                    parent_tree = self.branch.repository.revision_tree(
 
1112
                        parent_id)
 
1113
                with parent_tree.lock_read():
 
1114
                    # TODO(jelmer): Use rename/copy tracker to find path name
 
1115
                    # in parent
 
1116
                    parent_path = path
 
1117
                    try:
 
1118
                        kind = parent_tree.kind(parent_path)
 
1119
                    except errors.NoSuchFile:
 
1120
                        continue
 
1121
                    if kind != 'file':
 
1122
                        # Note: this is slightly unnecessary, because symlinks
 
1123
                        # and directories have a "text" which is the empty
 
1124
                        # text, and we know that won't mess up annotations. But
 
1125
                        # it seems cleaner
 
1126
                        continue
 
1127
                    parent_text_key = (
 
1128
                        parent_path,
 
1129
                        parent_tree.get_file_revision(parent_path))
 
1130
                    if parent_text_key not in maybe_file_parent_keys:
 
1131
                        maybe_file_parent_keys.append(parent_text_key)
 
1132
            # Now we have the parents of this content
 
1133
            from breezy.annotate import Annotator
 
1134
            from .annotate import AnnotateProvider
 
1135
            annotate_provider = AnnotateProvider(
 
1136
                self.branch.repository._file_change_scanner)
 
1137
            annotator = Annotator(annotate_provider)
 
1138
 
 
1139
            from breezy.graph import Graph
 
1140
            graph = Graph(annotate_provider)
 
1141
            heads = graph.heads(maybe_file_parent_keys)
 
1142
            file_parent_keys = []
 
1143
            for key in maybe_file_parent_keys:
 
1144
                if key in heads:
 
1145
                    file_parent_keys.append(key)
 
1146
 
 
1147
            text = self.get_file_text(path)
 
1148
            this_key = (path, default_revision)
 
1149
            annotator.add_special_text(this_key, file_parent_keys, text)
 
1150
            annotations = [(key[-1], line)
 
1151
                           for key, line in annotator.annotate_flat(this_key)]
 
1152
            return annotations
 
1153
 
 
1154
    def _rename_one(self, from_rel, to_rel):
 
1155
        os.rename(self.abspath(from_rel), self.abspath(to_rel))
 
1156
 
 
1157
    def _build_checkout_with_index(self):
 
1158
        build_index_from_tree(
 
1159
            self.user_transport.local_abspath('.'),
 
1160
            self.control_transport.local_abspath("index"),
 
1161
            self.store,
 
1162
            None
 
1163
            if self.branch.head is None
 
1164
            else self.store[self.branch.head].tree,
 
1165
            honor_filemode=self._supports_executable())
 
1166
 
 
1167
    def reset_state(self, revision_ids=None):
 
1168
        """Reset the state of the working tree.
 
1169
 
 
1170
        This does a hard-reset to a last-known-good state. This is a way to
 
1171
        fix if something got corrupted (like the .git/index file)
 
1172
        """
 
1173
        with self.lock_tree_write():
 
1174
            if revision_ids is not None:
 
1175
                self.set_parent_ids(revision_ids)
 
1176
            self.index.clear()
 
1177
            self._index_dirty = True
 
1178
            if self.branch.head is not None:
 
1179
                for entry in self.store.iter_tree_contents(
 
1180
                        self.store[self.branch.head].tree):
 
1181
                    if not validate_path(entry.path):
 
1182
                        continue
 
1183
 
 
1184
                    if S_ISGITLINK(entry.mode):
 
1185
                        pass  # TODO(jelmer): record and return submodule paths
 
1186
                    else:
 
1187
                        # Let's at least try to use the working tree file:
 
1188
                        try:
 
1189
                            st = self._lstat(self.abspath(
 
1190
                                entry.path.decode('utf-8')))
 
1191
                        except OSError:
 
1192
                            # But if it doesn't exist, we'll make something up.
 
1193
                            obj = self.store[entry.sha]
 
1194
                            st = os.stat_result((entry.mode, 0, 0, 0,
 
1195
                                                 0, 0, len(
 
1196
                                                     obj.as_raw_string()), 0,
 
1197
                                                 0, 0))
 
1198
                    (index, subpath) = self._lookup_index(entry.path)
 
1199
                    index[subpath] = index_entry_from_stat(st, entry.sha, 0)
 
1200
 
 
1201
    def _update_git_tree(self, old_revision, new_revision, change_reporter=None,
 
1202
                         show_base=False):
 
1203
        basis_tree = self.revision_tree(old_revision)
 
1204
        if new_revision != old_revision:
 
1205
            with basis_tree.lock_read():
 
1206
                new_basis_tree = self.branch.basis_tree()
 
1207
                merge.merge_inner(
 
1208
                    self.branch,
 
1209
                    new_basis_tree,
 
1210
                    basis_tree,
 
1211
                    this_tree=self,
 
1212
                    change_reporter=change_reporter,
 
1213
                    show_base=show_base)
 
1214
 
 
1215
    def pull(self, source, overwrite=False, stop_revision=None,
 
1216
             change_reporter=None, possible_transports=None, local=False,
 
1217
             show_base=False, tag_selector=None):
 
1218
        with self.lock_write(), source.lock_read():
 
1219
            old_revision = self.branch.last_revision()
 
1220
            count = self.branch.pull(source, overwrite, stop_revision,
 
1221
                                     possible_transports=possible_transports,
 
1222
                                     local=local, tag_selector=tag_selector)
 
1223
            self._update_git_tree(
 
1224
                old_revision=old_revision,
 
1225
                new_revision=self.branch.last_revision(),
 
1226
                change_reporter=change_reporter,
 
1227
                show_base=show_base)
 
1228
            return count
 
1229
 
 
1230
    def add_reference(self, sub_tree):
 
1231
        """Add a TreeReference to the tree, pointing at sub_tree.
 
1232
 
 
1233
        :param sub_tree: subtree to add.
 
1234
        """
 
1235
        with self.lock_tree_write():
 
1236
            try:
 
1237
                sub_tree_path = self.relpath(sub_tree.basedir)
 
1238
            except errors.PathNotChild:
 
1239
                raise BadReferenceTarget(
 
1240
                    self, sub_tree, 'Target not inside tree.')
 
1241
 
 
1242
            self._add([sub_tree_path], [None], ['tree-reference'])
 
1243
 
 
1244
    def _read_submodule_head(self, path):
 
1245
        return read_submodule_head(self.abspath(path))
 
1246
 
 
1247
    def get_reference_revision(self, path, branch=None):
 
1248
        hexsha = self._read_submodule_head(path)
 
1249
        if hexsha is None:
 
1250
            return _mod_revision.NULL_REVISION
 
1251
        return self.branch.lookup_foreign_revision_id(hexsha)
 
1252
 
 
1253
    def get_nested_tree(self, path):
 
1254
        return workingtree.WorkingTree.open(self.abspath(path))
 
1255
 
 
1256
    def _directory_is_tree_reference(self, relpath):
 
1257
        # as a special case, if a directory contains control files then
 
1258
        # it's a tree reference, except that the root of the tree is not
 
1259
        return relpath and osutils.lexists(self.abspath(relpath) + u"/.git")
 
1260
 
 
1261
    def extract(self, sub_path, format=None):
 
1262
        """Extract a subtree from this tree.
 
1263
 
 
1264
        A new branch will be created, relative to the path for this tree.
 
1265
        """
 
1266
        def mkdirs(path):
 
1267
            segments = osutils.splitpath(path)
 
1268
            transport = self.branch.controldir.root_transport
 
1269
            for name in segments:
 
1270
                transport = transport.clone(name)
 
1271
                transport.ensure_base()
 
1272
            return transport
 
1273
 
 
1274
        with self.lock_tree_write():
 
1275
            self.flush()
 
1276
            branch_transport = mkdirs(sub_path)
 
1277
            if format is None:
 
1278
                format = self.controldir.cloning_metadir()
 
1279
            branch_transport.ensure_base()
 
1280
            branch_bzrdir = format.initialize_on_transport(branch_transport)
 
1281
            try:
 
1282
                repo = branch_bzrdir.find_repository()
 
1283
            except errors.NoRepositoryPresent:
 
1284
                repo = branch_bzrdir.create_repository()
 
1285
            if not repo.supports_rich_root():
 
1286
                raise errors.RootNotRich()
 
1287
            new_branch = branch_bzrdir.create_branch()
 
1288
            new_branch.pull(self.branch)
 
1289
            for parent_id in self.get_parent_ids():
 
1290
                new_branch.fetch(self.branch, parent_id)
 
1291
            tree_transport = self.controldir.root_transport.clone(sub_path)
 
1292
            if tree_transport.base != branch_transport.base:
 
1293
                tree_bzrdir = format.initialize_on_transport(tree_transport)
 
1294
                tree_bzrdir.set_branch_reference(new_branch)
 
1295
            else:
 
1296
                tree_bzrdir = branch_bzrdir
 
1297
            wt = tree_bzrdir.create_workingtree(_mod_revision.NULL_REVISION)
 
1298
            wt.set_parent_ids(self.get_parent_ids())
 
1299
            return wt
 
1300
 
 
1301
    def _get_check_refs(self):
 
1302
        """Return the references needed to perform a check of this tree.
 
1303
 
 
1304
        The default implementation returns no refs, and is only suitable for
 
1305
        trees that have no local caching and can commit on ghosts at any time.
 
1306
 
 
1307
        :seealso: breezy.check for details about check_refs.
 
1308
        """
 
1309
        return []
 
1310
 
 
1311
    def copy_content_into(self, tree, revision_id=None):
 
1312
        """Copy the current content and user files of this tree into tree."""
 
1313
        with self.lock_read():
 
1314
            if revision_id is None:
 
1315
                merge.transform_tree(tree, self)
 
1316
            else:
 
1317
                # TODO now merge from tree.last_revision to revision (to
 
1318
                # preserve user local changes)
 
1319
                try:
 
1320
                    other_tree = self.revision_tree(revision_id)
 
1321
                except errors.NoSuchRevision:
 
1322
                    other_tree = self.branch.repository.revision_tree(
 
1323
                        revision_id)
 
1324
 
 
1325
                merge.transform_tree(tree, other_tree)
 
1326
                if revision_id == _mod_revision.NULL_REVISION:
 
1327
                    new_parents = []
 
1328
                else:
 
1329
                    new_parents = [revision_id]
 
1330
                tree.set_parent_ids(new_parents)
 
1331
 
 
1332
    def reference_parent(self, path, possible_transports=None):
 
1333
        remote_url = self.get_reference_info(path)
 
1334
        if remote_url is None:
 
1335
            trace.warning("Unable to find submodule info for %s", path)
 
1336
            return None
 
1337
        return _mod_branch.Branch.open(remote_url, possible_transports=possible_transports)
 
1338
 
 
1339
    def get_reference_info(self, path):
 
1340
        submodule_info = self._submodule_info()
 
1341
        info = submodule_info.get(path.encode('utf-8'))
 
1342
        if info is None:
 
1343
            return None
 
1344
        return info[0].decode('utf-8')
 
1345
 
 
1346
    def set_reference_info(self, tree_path, branch_location):
 
1347
        path = self.abspath('.gitmodules')
 
1348
        try:
 
1349
            config = GitConfigFile.from_path(path)
 
1350
        except EnvironmentError as e:
 
1351
            if e.errno == errno.ENOENT:
 
1352
                config = GitConfigFile()
 
1353
            else:
 
1354
                raise
 
1355
        section = (b'submodule', tree_path.encode('utf-8'))
 
1356
        if branch_location is None:
 
1357
            try:
 
1358
                del config[section]
 
1359
            except KeyError:
 
1360
                pass
 
1361
        else:
 
1362
            branch_location = urlutils.join(
 
1363
                urlutils.strip_segment_parameters(self.branch.user_url),
 
1364
                branch_location)
 
1365
            config.set(
 
1366
                section,
 
1367
                b'path', tree_path.encode('utf-8'))
 
1368
            config.set(
 
1369
                section,
 
1370
                b'url', branch_location.encode('utf-8'))
 
1371
        config.write_to_path(path)
 
1372
        self.add('.gitmodules')
 
1373
 
 
1374
 
 
1375
class GitWorkingTreeFormat(workingtree.WorkingTreeFormat):
 
1376
 
 
1377
    _tree_class = GitWorkingTree
 
1378
 
 
1379
    supports_versioned_directories = False
 
1380
 
 
1381
    supports_setting_file_ids = False
 
1382
 
 
1383
    supports_store_uncommitted = False
 
1384
 
 
1385
    supports_leftmost_parent_id_as_ghost = False
 
1386
 
 
1387
    supports_righthand_parent_id_as_ghost = False
 
1388
 
 
1389
    requires_normalized_unicode_filenames = True
 
1390
 
 
1391
    supports_merge_modified = False
 
1392
 
 
1393
    ignore_filename = ".gitignore"
 
1394
 
 
1395
    @property
 
1396
    def _matchingcontroldir(self):
 
1397
        from .dir import LocalGitControlDirFormat
 
1398
        return LocalGitControlDirFormat()
 
1399
 
 
1400
    def get_format_description(self):
 
1401
        return "Git Working Tree"
 
1402
 
 
1403
    def initialize(self, a_controldir, revision_id=None, from_branch=None,
 
1404
                   accelerator_tree=None, hardlink=False):
 
1405
        """See WorkingTreeFormat.initialize()."""
 
1406
        if not isinstance(a_controldir, LocalGitDir):
 
1407
            raise errors.IncompatibleFormat(self, a_controldir)
 
1408
        branch = a_controldir.open_branch(nascent_ok=True)
 
1409
        if revision_id is not None:
 
1410
            branch.set_last_revision(revision_id)
 
1411
        wt = GitWorkingTree(
 
1412
            a_controldir, a_controldir.open_repository(), branch)
 
1413
        for hook in MutableTree.hooks['post_build_tree']:
 
1414
            hook(wt)
 
1415
        return wt