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  • Committer: Jelmer Vernooij
  • Date: 2020-04-05 19:11:34 UTC
  • mto: (7490.7.16 work)
  • mto: This revision was merged to the branch mainline in revision 7501.
  • Revision ID: jelmer@jelmer.uk-20200405191134-0aebh8ikiwygxma5
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Lines of Context:
 
1
# Copyright (C) 2008-2018 Jelmer Vernooij <jelmer@jelmer.uk>
 
2
#
 
3
# This program is free software; you can redistribute it and/or modify
 
4
# it under the terms of the GNU General Public License as published by
 
5
# the Free Software Foundation; either version 2 of the License, or
 
6
# (at your option) any later version.
 
7
#
 
8
# This program is distributed in the hope that it will be useful,
 
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
11
# GNU General Public License for more details.
 
12
#
 
13
# You should have received a copy of the GNU General Public License
 
14
# along with this program; if not, write to the Free Software
 
15
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 
16
 
 
17
 
 
18
"""An adapter between a Git index and a Bazaar Working Tree"""
 
19
 
 
20
from __future__ import absolute_import
 
21
 
 
22
import itertools
 
23
from collections import defaultdict
 
24
import errno
 
25
from dulwich.ignore import (
 
26
    IgnoreFilterManager,
 
27
    )
 
28
from dulwich.config import ConfigFile as GitConfigFile
 
29
from dulwich.file import GitFile, FileLocked
 
30
from dulwich.index import (
 
31
    Index,
 
32
    SHA1Writer,
 
33
    build_index_from_tree,
 
34
    index_entry_from_path,
 
35
    index_entry_from_stat,
 
36
    FLAG_STAGEMASK,
 
37
    read_submodule_head,
 
38
    validate_path,
 
39
    write_index_dict,
 
40
    )
 
41
from dulwich.object_store import (
 
42
    tree_lookup_path,
 
43
    )
 
44
from dulwich.objects import (
 
45
    S_ISGITLINK,
 
46
    )
 
47
import os
 
48
import posixpath
 
49
import stat
 
50
import sys
 
51
 
 
52
from .. import (
 
53
    branch as _mod_branch,
 
54
    conflicts as _mod_conflicts,
 
55
    errors,
 
56
    controldir as _mod_controldir,
 
57
    globbing,
 
58
    ignores,
 
59
    lock,
 
60
    merge,
 
61
    osutils,
 
62
    revision as _mod_revision,
 
63
    trace,
 
64
    transport as _mod_transport,
 
65
    tree,
 
66
    urlutils,
 
67
    workingtree,
 
68
    )
 
69
from ..decorators import (
 
70
    only_raises,
 
71
    )
 
72
from ..mutabletree import (
 
73
    BadReferenceTarget,
 
74
    MutableTree,
 
75
    )
 
76
from ..sixish import text_type
 
77
 
 
78
 
 
79
from .dir import (
 
80
    LocalGitDir,
 
81
    )
 
82
from .tree import (
 
83
    MutableGitIndexTree,
 
84
    )
 
85
from .mapping import (
 
86
    mode_kind,
 
87
    )
 
88
 
 
89
 
 
90
class GitWorkingTree(MutableGitIndexTree, workingtree.WorkingTree):
 
91
    """A Git working tree."""
 
92
 
 
93
    def __init__(self, controldir, repo, branch):
 
94
        MutableGitIndexTree.__init__(self)
 
95
        basedir = controldir.root_transport.local_abspath('.')
 
96
        self.basedir = osutils.realpath(basedir)
 
97
        self.controldir = controldir
 
98
        self.repository = repo
 
99
        self.store = self.repository._git.object_store
 
100
        self.mapping = self.repository.get_mapping()
 
101
        self._branch = branch
 
102
        self._transport = self.repository._git._controltransport
 
103
        self._format = GitWorkingTreeFormat()
 
104
        self.index = None
 
105
        self._index_file = None
 
106
        self.views = self._make_views()
 
107
        self._rules_searcher = None
 
108
        self._detect_case_handling()
 
109
        self._reset_data()
 
110
 
 
111
    def supports_tree_reference(self):
 
112
        return True
 
113
 
 
114
    def supports_rename_tracking(self):
 
115
        return False
 
116
 
 
117
    def _read_index(self):
 
118
        self.index = Index(self.control_transport.local_abspath('index'))
 
119
        self._index_dirty = False
 
120
 
 
121
    def _get_submodule_index(self, relpath):
 
122
        if not isinstance(relpath, bytes):
 
123
            raise TypeError(relpath)
 
124
        try:
 
125
            info = self._submodule_info()[relpath]
 
126
        except KeyError:
 
127
            index_path = os.path.join(self.basedir, relpath.decode('utf-8'), '.git', 'index')
 
128
        else:
 
129
            index_path = self.control_transport.local_abspath(
 
130
                posixpath.join('modules', info[1].decode('utf-8'), 'index'))
 
131
        return Index(index_path)
 
132
 
 
133
    def lock_read(self):
 
134
        """Lock the repository for read operations.
 
135
 
 
136
        :return: A breezy.lock.LogicalLockResult.
 
137
        """
 
138
        if not self._lock_mode:
 
139
            self._lock_mode = 'r'
 
140
            self._lock_count = 1
 
141
            self._read_index()
 
142
        else:
 
143
            self._lock_count += 1
 
144
        self.branch.lock_read()
 
145
        return lock.LogicalLockResult(self.unlock)
 
146
 
 
147
    def _lock_write_tree(self):
 
148
        if not self._lock_mode:
 
149
            self._lock_mode = 'w'
 
150
            self._lock_count = 1
 
151
            try:
 
152
                self._index_file = GitFile(
 
153
                    self.control_transport.local_abspath('index'), 'wb')
 
154
            except FileLocked:
 
155
                raise errors.LockContention('index')
 
156
            self._read_index()
 
157
        elif self._lock_mode == 'r':
 
158
            raise errors.ReadOnlyError(self)
 
159
        else:
 
160
            self._lock_count += 1
 
161
 
 
162
    def lock_tree_write(self):
 
163
        self.branch.lock_read()
 
164
        try:
 
165
            self._lock_write_tree()
 
166
            return lock.LogicalLockResult(self.unlock)
 
167
        except BaseException:
 
168
            self.branch.unlock()
 
169
            raise
 
170
 
 
171
    def lock_write(self, token=None):
 
172
        self.branch.lock_write()
 
173
        try:
 
174
            self._lock_write_tree()
 
175
            return lock.LogicalLockResult(self.unlock)
 
176
        except BaseException:
 
177
            self.branch.unlock()
 
178
            raise
 
179
 
 
180
    def is_locked(self):
 
181
        return self._lock_count >= 1
 
182
 
 
183
    def get_physical_lock_status(self):
 
184
        return False
 
185
 
 
186
    def break_lock(self):
 
187
        try:
 
188
            self.control_transport.delete('index.lock')
 
189
        except errors.NoSuchFile:
 
190
            pass
 
191
        self.branch.break_lock()
 
192
 
 
193
    @only_raises(errors.LockNotHeld, errors.LockBroken)
 
194
    def unlock(self):
 
195
        if not self._lock_count:
 
196
            return lock.cant_unlock_not_held(self)
 
197
        try:
 
198
            self._cleanup()
 
199
            self._lock_count -= 1
 
200
            if self._lock_count > 0:
 
201
                return
 
202
            if self._index_file is not None:
 
203
                if self._index_dirty:
 
204
                    self._flush(self._index_file)
 
205
                    self._index_file.close()
 
206
                else:
 
207
                    # Something else already triggered a write of the index
 
208
                    # file by calling .flush()
 
209
                    self._index_file.abort()
 
210
                self._index_file = None
 
211
            self._lock_mode = None
 
212
            self.index = None
 
213
        finally:
 
214
            self.branch.unlock()
 
215
 
 
216
    def _cleanup(self):
 
217
        pass
 
218
 
 
219
    def _detect_case_handling(self):
 
220
        try:
 
221
            self._transport.stat(".git/cOnFiG")
 
222
        except errors.NoSuchFile:
 
223
            self.case_sensitive = True
 
224
        else:
 
225
            self.case_sensitive = False
 
226
 
 
227
    def get_transform(self, pb=None):
 
228
        from ..transform import TreeTransform
 
229
        return TreeTransform(self, pb=pb)
 
230
 
 
231
    def merge_modified(self):
 
232
        return {}
 
233
 
 
234
    def set_merge_modified(self, modified_hashes):
 
235
        raise errors.UnsupportedOperation(self.set_merge_modified, self)
 
236
 
 
237
    def set_parent_trees(self, parents_list, allow_leftmost_as_ghost=False):
 
238
        self.set_parent_ids([p for p, t in parents_list])
 
239
 
 
240
    def _set_merges_from_parent_ids(self, rhs_parent_ids):
 
241
        try:
 
242
            merges = [self.branch.lookup_bzr_revision_id(
 
243
                revid)[0] for revid in rhs_parent_ids]
 
244
        except errors.NoSuchRevision as e:
 
245
            raise errors.GhostRevisionUnusableHere(e.revision)
 
246
        if merges:
 
247
            self.control_transport.put_bytes(
 
248
                'MERGE_HEAD', b'\n'.join(merges),
 
249
                mode=self.controldir._get_file_mode())
 
250
        else:
 
251
            try:
 
252
                self.control_transport.delete('MERGE_HEAD')
 
253
            except errors.NoSuchFile:
 
254
                pass
 
255
 
 
256
    def set_parent_ids(self, revision_ids, allow_leftmost_as_ghost=False):
 
257
        """Set the parent ids to revision_ids.
 
258
 
 
259
        See also set_parent_trees. This api will try to retrieve the tree data
 
260
        for each element of revision_ids from the trees repository. If you have
 
261
        tree data already available, it is more efficient to use
 
262
        set_parent_trees rather than set_parent_ids. set_parent_ids is however
 
263
        an easier API to use.
 
264
 
 
265
        :param revision_ids: The revision_ids to set as the parent ids of this
 
266
            working tree. Any of these may be ghosts.
 
267
        """
 
268
        with self.lock_tree_write():
 
269
            self._check_parents_for_ghosts(
 
270
                revision_ids, allow_leftmost_as_ghost=allow_leftmost_as_ghost)
 
271
            for revision_id in revision_ids:
 
272
                _mod_revision.check_not_reserved_id(revision_id)
 
273
 
 
274
            revision_ids = self._filter_parent_ids_by_ancestry(revision_ids)
 
275
 
 
276
            if len(revision_ids) > 0:
 
277
                self.set_last_revision(revision_ids[0])
 
278
            else:
 
279
                self.set_last_revision(_mod_revision.NULL_REVISION)
 
280
 
 
281
            self._set_merges_from_parent_ids(revision_ids[1:])
 
282
 
 
283
    def get_parent_ids(self):
 
284
        """See Tree.get_parent_ids.
 
285
 
 
286
        This implementation reads the pending merges list and last_revision
 
287
        value and uses that to decide what the parents list should be.
 
288
        """
 
289
        last_rev = _mod_revision.ensure_null(self._last_revision())
 
290
        if _mod_revision.NULL_REVISION == last_rev:
 
291
            parents = []
 
292
        else:
 
293
            parents = [last_rev]
 
294
        try:
 
295
            merges_bytes = self.control_transport.get_bytes('MERGE_HEAD')
 
296
        except errors.NoSuchFile:
 
297
            pass
 
298
        else:
 
299
            for l in osutils.split_lines(merges_bytes):
 
300
                revision_id = l.rstrip(b'\n')
 
301
                parents.append(
 
302
                    self.branch.lookup_foreign_revision_id(revision_id))
 
303
        return parents
 
304
 
 
305
    def check_state(self):
 
306
        """Check that the working state is/isn't valid."""
 
307
        pass
 
308
 
 
309
    def remove(self, files, verbose=False, to_file=None, keep_files=True,
 
310
               force=False):
 
311
        """Remove nominated files from the working tree metadata.
 
312
 
 
313
        :param files: File paths relative to the basedir.
 
314
        :param keep_files: If true, the files will also be kept.
 
315
        :param force: Delete files and directories, even if they are changed
 
316
            and even if the directories are not empty.
 
317
        """
 
318
        if not isinstance(files, list):
 
319
            files = [files]
 
320
 
 
321
        if to_file is None:
 
322
            to_file = sys.stdout
 
323
 
 
324
        def backup(file_to_backup):
 
325
            abs_path = self.abspath(file_to_backup)
 
326
            backup_name = self.controldir._available_backup_name(
 
327
                file_to_backup)
 
328
            osutils.rename(abs_path, self.abspath(backup_name))
 
329
            return "removed %s (but kept a copy: %s)" % (
 
330
                file_to_backup, backup_name)
 
331
 
 
332
        # Sort needed to first handle directory content before the directory
 
333
        files_to_backup = []
 
334
 
 
335
        all_files = set()
 
336
 
 
337
        def recurse_directory_to_add_files(directory):
 
338
            # Recurse directory and add all files
 
339
            # so we can check if they have changed.
 
340
            for parent_info, file_infos in self.walkdirs(directory):
 
341
                for relpath, basename, kind, lstat, fileid, kind in file_infos:
 
342
                    # Is it versioned or ignored?
 
343
                    if self.is_versioned(relpath):
 
344
                        # Add nested content for deletion.
 
345
                        all_files.add(relpath)
 
346
                    else:
 
347
                        # Files which are not versioned
 
348
                        # should be treated as unknown.
 
349
                        files_to_backup.append(relpath)
 
350
 
 
351
        with self.lock_tree_write():
 
352
            for filepath in files:
 
353
                # Get file name into canonical form.
 
354
                abspath = self.abspath(filepath)
 
355
                filepath = self.relpath(abspath)
 
356
 
 
357
                if filepath:
 
358
                    all_files.add(filepath)
 
359
                    recurse_directory_to_add_files(filepath)
 
360
 
 
361
            files = list(all_files)
 
362
 
 
363
            if len(files) == 0:
 
364
                return  # nothing to do
 
365
 
 
366
            # Sort needed to first handle directory content before the
 
367
            # directory
 
368
            files.sort(reverse=True)
 
369
 
 
370
            # Bail out if we are going to delete files we shouldn't
 
371
            if not keep_files and not force:
 
372
                for change in self.iter_changes(
 
373
                        self.basis_tree(), include_unchanged=True,
 
374
                        require_versioned=False, want_unversioned=True,
 
375
                        specific_files=files):
 
376
                    if change.versioned[0] is False:
 
377
                        # The record is unknown or newly added
 
378
                        files_to_backup.append(change.path[1])
 
379
                        files_to_backup.extend(
 
380
                            osutils.parent_directories(change.path[1]))
 
381
                    elif (change.changed_content and (change.kind[1] is not None)
 
382
                            and osutils.is_inside_any(files, change.path[1])):
 
383
                        # Versioned and changed, but not deleted, and still
 
384
                        # in one of the dirs to be deleted.
 
385
                        files_to_backup.append(change.path[1])
 
386
                        files_to_backup.extend(
 
387
                            osutils.parent_directories(change.path[1]))
 
388
 
 
389
            for f in files:
 
390
                if f == '':
 
391
                    continue
 
392
 
 
393
                try:
 
394
                    kind = self.kind(f)
 
395
                except errors.NoSuchFile:
 
396
                    kind = None
 
397
 
 
398
                abs_path = self.abspath(f)
 
399
                if verbose:
 
400
                    # having removed it, it must be either ignored or unknown
 
401
                    if self.is_ignored(f):
 
402
                        new_status = 'I'
 
403
                    else:
 
404
                        new_status = '?'
 
405
                    kind_ch = osutils.kind_marker(kind)
 
406
                    to_file.write(new_status + '       ' + f + kind_ch + '\n')
 
407
                if kind is None:
 
408
                    message = "%s does not exist" % (f, )
 
409
                else:
 
410
                    if not keep_files:
 
411
                        if f in files_to_backup and not force:
 
412
                            message = backup(f)
 
413
                        else:
 
414
                            if kind == 'directory':
 
415
                                osutils.rmtree(abs_path)
 
416
                            else:
 
417
                                osutils.delete_any(abs_path)
 
418
                            message = "deleted %s" % (f,)
 
419
                    else:
 
420
                        message = "removed %s" % (f,)
 
421
                self._unversion_path(f)
 
422
 
 
423
                # print only one message (if any) per file.
 
424
                if message is not None:
 
425
                    trace.note(message)
 
426
            self._versioned_dirs = None
 
427
 
 
428
    def smart_add(self, file_list, recurse=True, action=None, save=True):
 
429
        if not file_list:
 
430
            file_list = [u'.']
 
431
 
 
432
        # expand any symlinks in the directory part, while leaving the
 
433
        # filename alone
 
434
        # only expanding if symlinks are supported avoids windows path bugs
 
435
        if self.supports_symlinks():
 
436
            file_list = list(map(osutils.normalizepath, file_list))
 
437
 
 
438
        conflicts_related = set()
 
439
        for c in self.conflicts():
 
440
            conflicts_related.update(c.associated_filenames())
 
441
 
 
442
        added = []
 
443
        ignored = {}
 
444
        user_dirs = []
 
445
 
 
446
        def call_action(filepath, kind):
 
447
            if filepath == '':
 
448
                return
 
449
            if action is not None:
 
450
                parent_path = posixpath.dirname(filepath)
 
451
                parent_id = self.path2id(parent_path)
 
452
                parent_ie = self._get_dir_ie(parent_path, parent_id)
 
453
                file_id = action(self, parent_ie, filepath, kind)
 
454
                if file_id is not None:
 
455
                    raise workingtree.SettingFileIdUnsupported()
 
456
 
 
457
        with self.lock_tree_write():
 
458
            for filepath in osutils.canonical_relpaths(
 
459
                    self.basedir, file_list):
 
460
                filepath, can_access = osutils.normalized_filename(filepath)
 
461
                if not can_access:
 
462
                    raise errors.InvalidNormalization(filepath)
 
463
 
 
464
                abspath = self.abspath(filepath)
 
465
                kind = osutils.file_kind(abspath)
 
466
                if kind in ("file", "symlink"):
 
467
                    (index, subpath) = self._lookup_index(
 
468
                        filepath.encode('utf-8'))
 
469
                    if subpath in index:
 
470
                        # Already present
 
471
                        continue
 
472
                    call_action(filepath, kind)
 
473
                    if save:
 
474
                        self._index_add_entry(filepath, kind)
 
475
                    added.append(filepath)
 
476
                elif kind == "directory":
 
477
                    (index, subpath) = self._lookup_index(
 
478
                        filepath.encode('utf-8'))
 
479
                    if subpath not in index:
 
480
                        call_action(filepath, kind)
 
481
                    if recurse:
 
482
                        user_dirs.append(filepath)
 
483
                else:
 
484
                    raise errors.BadFileKindError(filename=abspath, kind=kind)
 
485
            for user_dir in user_dirs:
 
486
                abs_user_dir = self.abspath(user_dir)
 
487
                if user_dir != '':
 
488
                    try:
 
489
                        transport = _mod_transport.get_transport_from_path(
 
490
                            abs_user_dir)
 
491
                        _mod_controldir.ControlDirFormat.find_format(transport)
 
492
                        subtree = True
 
493
                    except errors.NotBranchError:
 
494
                        subtree = False
 
495
                    except errors.UnsupportedFormatError:
 
496
                        subtree = False
 
497
                else:
 
498
                    subtree = False
 
499
                if subtree:
 
500
                    trace.warning('skipping nested tree %r', abs_user_dir)
 
501
                    continue
 
502
 
 
503
                for name in os.listdir(abs_user_dir):
 
504
                    subp = os.path.join(user_dir, name)
 
505
                    if (self.is_control_filename(subp) or
 
506
                            self.mapping.is_special_file(subp)):
 
507
                        continue
 
508
                    ignore_glob = self.is_ignored(subp)
 
509
                    if ignore_glob is not None:
 
510
                        ignored.setdefault(ignore_glob, []).append(subp)
 
511
                        continue
 
512
                    abspath = self.abspath(subp)
 
513
                    kind = osutils.file_kind(abspath)
 
514
                    if kind == "directory":
 
515
                        user_dirs.append(subp)
 
516
                    else:
 
517
                        (index, subpath) = self._lookup_index(
 
518
                            subp.encode('utf-8'))
 
519
                        if subpath in index:
 
520
                            # Already present
 
521
                            continue
 
522
                        if subp in conflicts_related:
 
523
                            continue
 
524
                        call_action(subp, kind)
 
525
                        if save:
 
526
                            self._index_add_entry(subp, kind)
 
527
                        added.append(subp)
 
528
            return added, ignored
 
529
 
 
530
    def has_filename(self, filename):
 
531
        return osutils.lexists(self.abspath(filename))
 
532
 
 
533
    def _iter_files_recursive(self, from_dir=None, include_dirs=False,
 
534
                              recurse_nested=False):
 
535
        if from_dir is None:
 
536
            from_dir = u""
 
537
        if not isinstance(from_dir, text_type):
 
538
            raise TypeError(from_dir)
 
539
        encoded_from_dir = self.abspath(from_dir).encode(osutils._fs_enc)
 
540
        for (dirpath, dirnames, filenames) in os.walk(encoded_from_dir):
 
541
            dir_relpath = dirpath[len(self.basedir):].strip(b"/")
 
542
            if self.controldir.is_control_filename(
 
543
                    dir_relpath.decode(osutils._fs_enc)):
 
544
                continue
 
545
            for name in list(dirnames):
 
546
                if self.controldir.is_control_filename(
 
547
                        name.decode(osutils._fs_enc)):
 
548
                    dirnames.remove(name)
 
549
                    continue
 
550
                relpath = os.path.join(dir_relpath, name)
 
551
                if not recurse_nested and self._directory_is_tree_reference(relpath.decode(osutils._fs_enc)):
 
552
                    dirnames.remove(name)
 
553
                if include_dirs:
 
554
                    try:
 
555
                        yield relpath.decode(osutils._fs_enc)
 
556
                    except UnicodeDecodeError:
 
557
                        raise errors.BadFilenameEncoding(
 
558
                            relpath, osutils._fs_enc)
 
559
                    if not self.is_versioned(relpath.decode(osutils._fs_enc)):
 
560
                        dirnames.remove(name)
 
561
            for name in filenames:
 
562
                if self.mapping.is_special_file(name):
 
563
                    continue
 
564
                if self.controldir.is_control_filename(
 
565
                        name.decode(osutils._fs_enc, 'replace')):
 
566
                    continue
 
567
                yp = os.path.join(dir_relpath, name)
 
568
                try:
 
569
                    yield yp.decode(osutils._fs_enc)
 
570
                except UnicodeDecodeError:
 
571
                    raise errors.BadFilenameEncoding(
 
572
                        yp, osutils._fs_enc)
 
573
 
 
574
    def extras(self):
 
575
        """Yield all unversioned files in this WorkingTree.
 
576
        """
 
577
        with self.lock_read():
 
578
            index_paths = set(
 
579
                [p.decode('utf-8') for p, i in self._recurse_index_entries()])
 
580
            all_paths = set(self._iter_files_recursive(include_dirs=False))
 
581
            return iter(all_paths - index_paths)
 
582
 
 
583
    def _gather_kinds(self, files, kinds):
 
584
        """See MutableTree._gather_kinds."""
 
585
        with self.lock_tree_write():
 
586
            for pos, f in enumerate(files):
 
587
                if kinds[pos] is None:
 
588
                    fullpath = osutils.normpath(self.abspath(f))
 
589
                    try:
 
590
                        kind = osutils.file_kind(fullpath)
 
591
                    except OSError as e:
 
592
                        if e.errno == errno.ENOENT:
 
593
                            raise errors.NoSuchFile(fullpath)
 
594
                    if f != '' and self._directory_is_tree_reference(f):
 
595
                        kind = 'tree-reference'
 
596
                    kinds[pos] = kind
 
597
 
 
598
    def flush(self):
 
599
        if self._lock_mode != 'w':
 
600
            raise errors.NotWriteLocked(self)
 
601
        # TODO(jelmer): This shouldn't be writing in-place, but index.lock is
 
602
        # already in use and GitFile doesn't allow overriding the lock file
 
603
        # name :(
 
604
        f = open(self.control_transport.local_abspath('index'), 'wb')
 
605
        # Note that _flush will close the file
 
606
        self._flush(f)
 
607
 
 
608
    def _flush(self, f):
 
609
        try:
 
610
            shaf = SHA1Writer(f)
 
611
            write_index_dict(shaf, self.index)
 
612
            shaf.close()
 
613
        except BaseException:
 
614
            f.abort()
 
615
            raise
 
616
        self._index_dirty = False
 
617
 
 
618
    def get_file_mtime(self, path):
 
619
        """See Tree.get_file_mtime."""
 
620
        try:
 
621
            return self._lstat(path).st_mtime
 
622
        except OSError as e:
 
623
            if e.errno == errno.ENOENT:
 
624
                raise errors.NoSuchFile(path)
 
625
            raise
 
626
 
 
627
    def is_ignored(self, filename):
 
628
        r"""Check whether the filename matches an ignore pattern.
 
629
 
 
630
        If the file is ignored, returns the pattern which caused it to
 
631
        be ignored, otherwise None.  So this can simply be used as a
 
632
        boolean if desired."""
 
633
        if getattr(self, '_global_ignoreglobster', None) is None:
 
634
            ignore_globs = set()
 
635
            ignore_globs.update(ignores.get_runtime_ignores())
 
636
            ignore_globs.update(ignores.get_user_ignores())
 
637
            self._global_ignoreglobster = globbing.ExceptionGlobster(
 
638
                ignore_globs)
 
639
        match = self._global_ignoreglobster.match(filename)
 
640
        if match is not None:
 
641
            return match
 
642
        try:
 
643
            if self.kind(filename) == 'directory':
 
644
                filename += '/'
 
645
        except errors.NoSuchFile:
 
646
            pass
 
647
        filename = filename.lstrip('/')
 
648
        ignore_manager = self._get_ignore_manager()
 
649
        ps = list(ignore_manager.find_matching(filename))
 
650
        if not ps:
 
651
            return None
 
652
        if not ps[-1].is_exclude:
 
653
            return None
 
654
        return bytes(ps[-1])
 
655
 
 
656
    def _get_ignore_manager(self):
 
657
        ignoremanager = getattr(self, '_ignoremanager', None)
 
658
        if ignoremanager is not None:
 
659
            return ignoremanager
 
660
 
 
661
        ignore_manager = IgnoreFilterManager.from_repo(self.repository._git)
 
662
        self._ignoremanager = ignore_manager
 
663
        return ignore_manager
 
664
 
 
665
    def _flush_ignore_list_cache(self):
 
666
        self._ignoremanager = None
 
667
 
 
668
    def set_last_revision(self, revid):
 
669
        if _mod_revision.is_null(revid):
 
670
            self.branch.set_last_revision_info(0, revid)
 
671
            return False
 
672
        _mod_revision.check_not_reserved_id(revid)
 
673
        try:
 
674
            self.branch.generate_revision_history(revid)
 
675
        except errors.NoSuchRevision:
 
676
            raise errors.GhostRevisionUnusableHere(revid)
 
677
 
 
678
    def _reset_data(self):
 
679
        pass
 
680
 
 
681
    def get_file_verifier(self, path, stat_value=None):
 
682
        with self.lock_read():
 
683
            (index, subpath) = self._lookup_index(path.encode('utf-8'))
 
684
            try:
 
685
                return ("GIT", index[subpath].sha)
 
686
            except KeyError:
 
687
                if self._has_dir(path):
 
688
                    return ("GIT", None)
 
689
                raise errors.NoSuchFile(path)
 
690
 
 
691
    def get_file_sha1(self, path, stat_value=None):
 
692
        with self.lock_read():
 
693
            if not self.is_versioned(path):
 
694
                raise errors.NoSuchFile(path)
 
695
            abspath = self.abspath(path)
 
696
            try:
 
697
                return osutils.sha_file_by_name(abspath)
 
698
            except OSError as e:
 
699
                if e.errno in (errno.EISDIR, errno.ENOENT):
 
700
                    return None
 
701
                raise
 
702
 
 
703
    def revision_tree(self, revid):
 
704
        return self.repository.revision_tree(revid)
 
705
 
 
706
    def _is_executable_from_path_and_stat_from_stat(self, path, stat_result):
 
707
        mode = stat_result.st_mode
 
708
        return bool(stat.S_ISREG(mode) and stat.S_IEXEC & mode)
 
709
 
 
710
    def _is_executable_from_path_and_stat_from_basis(self, path, stat_result):
 
711
        return self.basis_tree().is_executable(path)
 
712
 
 
713
    def stored_kind(self, path):
 
714
        with self.lock_read():
 
715
            encoded_path = path.encode('utf-8')
 
716
            (index, subpath) = self._lookup_index(encoded_path)
 
717
            try:
 
718
                return mode_kind(index[subpath].mode)
 
719
            except KeyError:
 
720
                # Maybe it's a directory?
 
721
                if self._has_dir(encoded_path):
 
722
                    return "directory"
 
723
                raise errors.NoSuchFile(path)
 
724
 
 
725
    def _lstat(self, path):
 
726
        return os.lstat(self.abspath(path))
 
727
 
 
728
    def _live_entry(self, path):
 
729
        encoded_path = self.abspath(path.decode('utf-8')).encode(
 
730
            osutils._fs_enc)
 
731
        return index_entry_from_path(encoded_path)
 
732
 
 
733
    def is_executable(self, path):
 
734
        with self.lock_read():
 
735
            if self._supports_executable():
 
736
                mode = self._lstat(path).st_mode
 
737
            else:
 
738
                (index, subpath) = self._lookup_index(path.encode('utf-8'))
 
739
                try:
 
740
                    mode = index[subpath].mode
 
741
                except KeyError:
 
742
                    mode = 0
 
743
            return bool(stat.S_ISREG(mode) and stat.S_IEXEC & mode)
 
744
 
 
745
    def _is_executable_from_path_and_stat(self, path, stat_result):
 
746
        if self._supports_executable():
 
747
            return self._is_executable_from_path_and_stat_from_stat(path, stat_result)
 
748
        else:
 
749
            return self._is_executable_from_path_and_stat_from_basis(
 
750
                path, stat_result)
 
751
 
 
752
    def list_files(self, include_root=False, from_dir=None, recursive=True,
 
753
                   recurse_nested=False):
 
754
        if from_dir is None or from_dir == '.':
 
755
            from_dir = u""
 
756
        dir_ids = {}
 
757
        fk_entries = {'directory': tree.TreeDirectory,
 
758
                      'file': tree.TreeFile,
 
759
                      'symlink': tree.TreeLink,
 
760
                      'tree-reference': tree.TreeReference}
 
761
        with self.lock_read():
 
762
            root_ie = self._get_dir_ie(u"", None)
 
763
            if include_root and not from_dir:
 
764
                yield "", "V", root_ie.kind, root_ie
 
765
            dir_ids[u""] = root_ie.file_id
 
766
            if recursive:
 
767
                path_iterator = sorted(
 
768
                    self._iter_files_recursive(
 
769
                        from_dir, include_dirs=True,
 
770
                        recurse_nested=recurse_nested))
 
771
            else:
 
772
                encoded_from_dir = self.abspath(from_dir).encode(
 
773
                    osutils._fs_enc)
 
774
                path_iterator = sorted(
 
775
                    [os.path.join(from_dir, name.decode(osutils._fs_enc))
 
776
                     for name in os.listdir(encoded_from_dir)
 
777
                     if not self.controldir.is_control_filename(
 
778
                         name.decode(osutils._fs_enc)) and
 
779
                     not self.mapping.is_special_file(
 
780
                         name.decode(osutils._fs_enc))])
 
781
            for path in path_iterator:
 
782
                try:
 
783
                    encoded_path = path.encode("utf-8")
 
784
                except UnicodeEncodeError:
 
785
                    raise errors.BadFilenameEncoding(
 
786
                        path, osutils._fs_enc)
 
787
                (index, index_path) = self._lookup_index(encoded_path)
 
788
                try:
 
789
                    value = index[index_path]
 
790
                except KeyError:
 
791
                    value = None
 
792
                kind = self.kind(path)
 
793
                parent, name = posixpath.split(path)
 
794
                for dir_path, dir_ie in self._add_missing_parent_ids(
 
795
                        parent, dir_ids):
 
796
                    pass
 
797
                if kind == 'tree-reference' and recurse_nested:
 
798
                    ie = self._get_dir_ie(path, self.path2id(path))
 
799
                    yield (posixpath.relpath(path, from_dir), 'V', 'directory',
 
800
                           ie)
 
801
                    continue
 
802
                if kind == 'directory':
 
803
                    if path != from_dir:
 
804
                        if self._has_dir(encoded_path):
 
805
                            ie = self._get_dir_ie(path, self.path2id(path))
 
806
                            status = "V"
 
807
                        elif self.is_ignored(path):
 
808
                            status = "I"
 
809
                            ie = fk_entries[kind]()
 
810
                        else:
 
811
                            status = "?"
 
812
                            ie = fk_entries[kind]()
 
813
                        yield (posixpath.relpath(path, from_dir), status, kind,
 
814
                               ie)
 
815
                    continue
 
816
                if value is not None:
 
817
                    ie = self._get_file_ie(name, path, value, dir_ids[parent])
 
818
                    yield (posixpath.relpath(path, from_dir), "V", ie.kind, ie)
 
819
                else:
 
820
                    ie = fk_entries[kind]()
 
821
                    yield (posixpath.relpath(path, from_dir),
 
822
                           ("I" if self.is_ignored(path) else "?"), kind, ie)
 
823
 
 
824
    def all_file_ids(self):
 
825
        raise errors.UnsupportedOperation(self.all_file_ids, self)
 
826
 
 
827
    def all_versioned_paths(self):
 
828
        with self.lock_read():
 
829
            paths = {u""}
 
830
            for path in self.index:
 
831
                if self.mapping.is_special_file(path):
 
832
                    continue
 
833
                path = path.decode("utf-8")
 
834
                paths.add(path)
 
835
                while path != "":
 
836
                    path = posixpath.dirname(path).strip("/")
 
837
                    if path in paths:
 
838
                        break
 
839
                    paths.add(path)
 
840
            return paths
 
841
 
 
842
    def iter_child_entries(self, path):
 
843
        encoded_path = path.encode('utf-8')
 
844
        with self.lock_read():
 
845
            parent_id = self.path2id(path)
 
846
            found_any = False
 
847
            for item_path, value in self.index.iteritems():
 
848
                decoded_item_path = item_path.decode('utf-8')
 
849
                if self.mapping.is_special_file(item_path):
 
850
                    continue
 
851
                if not osutils.is_inside(path, decoded_item_path):
 
852
                    continue
 
853
                found_any = True
 
854
                subpath = posixpath.relpath(decoded_item_path, path)
 
855
                if '/' in subpath:
 
856
                    dirname = subpath.split('/', 1)[0]
 
857
                    file_ie = self._get_dir_ie(
 
858
                        posixpath.join(path, dirname), parent_id)
 
859
                else:
 
860
                    (unused_parent, name) = posixpath.split(decoded_item_path)
 
861
                    file_ie = self._get_file_ie(
 
862
                        name, decoded_item_path, value, parent_id)
 
863
                yield file_ie
 
864
            if not found_any and path != u'':
 
865
                raise errors.NoSuchFile(path)
 
866
 
 
867
    def conflicts(self):
 
868
        with self.lock_read():
 
869
            conflicts = _mod_conflicts.ConflictList()
 
870
            for item_path, value in self.index.iteritems():
 
871
                if value.flags & FLAG_STAGEMASK:
 
872
                    conflicts.append(_mod_conflicts.TextConflict(
 
873
                        item_path.decode('utf-8')))
 
874
            return conflicts
 
875
 
 
876
    def set_conflicts(self, conflicts):
 
877
        by_path = set()
 
878
        for conflict in conflicts:
 
879
            if conflict.typestring in ('text conflict', 'contents conflict'):
 
880
                by_path.add(conflict.path.encode('utf-8'))
 
881
            else:
 
882
                raise errors.UnsupportedOperation(self.set_conflicts, self)
 
883
        with self.lock_tree_write():
 
884
            for path in self.index:
 
885
                self._set_conflicted(path, path in by_path)
 
886
 
 
887
    def _set_conflicted(self, path, conflicted):
 
888
        trace.mutter('change conflict: %r -> %r', path, conflicted)
 
889
        value = self.index[path]
 
890
        self._index_dirty = True
 
891
        if conflicted:
 
892
            self.index[path] = (value[:9] + (value[9] | FLAG_STAGEMASK, ))
 
893
        else:
 
894
            self.index[path] = (value[:9] + (value[9] & ~ FLAG_STAGEMASK, ))
 
895
 
 
896
    def add_conflicts(self, new_conflicts):
 
897
        with self.lock_tree_write():
 
898
            for conflict in new_conflicts:
 
899
                if conflict.typestring in ('text conflict',
 
900
                                           'contents conflict'):
 
901
                    try:
 
902
                        self._set_conflicted(
 
903
                            conflict.path.encode('utf-8'), True)
 
904
                    except KeyError:
 
905
                        raise errors.UnsupportedOperation(
 
906
                            self.add_conflicts, self)
 
907
                else:
 
908
                    raise errors.UnsupportedOperation(self.add_conflicts, self)
 
909
 
 
910
    def walkdirs(self, prefix=""):
 
911
        """Walk the directories of this tree.
 
912
 
 
913
        returns a generator which yields items in the form:
 
914
                ((curren_directory_path, fileid),
 
915
                 [(file1_path, file1_name, file1_kind, (lstat), file1_id,
 
916
                   file1_kind), ... ])
 
917
 
 
918
        This API returns a generator, which is only valid during the current
 
919
        tree transaction - within a single lock_read or lock_write duration.
 
920
 
 
921
        If the tree is not locked, it may cause an error to be raised,
 
922
        depending on the tree implementation.
 
923
        """
 
924
        from bisect import bisect_left
 
925
        import operator
 
926
        disk_top = self.abspath(prefix)
 
927
        if disk_top.endswith('/'):
 
928
            disk_top = disk_top[:-1]
 
929
        top_strip_len = len(disk_top) + 1
 
930
        inventory_iterator = self._walkdirs(prefix)
 
931
        disk_iterator = osutils.walkdirs(disk_top, prefix)
 
932
        try:
 
933
            current_disk = next(disk_iterator)
 
934
            disk_finished = False
 
935
        except OSError as e:
 
936
            if not (e.errno == errno.ENOENT
 
937
                    or (sys.platform == 'win32' and e.errno == ERROR_PATH_NOT_FOUND)):
 
938
                raise
 
939
            current_disk = None
 
940
            disk_finished = True
 
941
        try:
 
942
            current_inv = next(inventory_iterator)
 
943
            inv_finished = False
 
944
        except StopIteration:
 
945
            current_inv = None
 
946
            inv_finished = True
 
947
        while not inv_finished or not disk_finished:
 
948
            if current_disk:
 
949
                ((cur_disk_dir_relpath, cur_disk_dir_path_from_top),
 
950
                    cur_disk_dir_content) = current_disk
 
951
            else:
 
952
                ((cur_disk_dir_relpath, cur_disk_dir_path_from_top),
 
953
                    cur_disk_dir_content) = ((None, None), None)
 
954
            if not disk_finished:
 
955
                # strip out .bzr dirs
 
956
                if (cur_disk_dir_path_from_top[top_strip_len:] == ''
 
957
                        and len(cur_disk_dir_content) > 0):
 
958
                    # osutils.walkdirs can be made nicer -
 
959
                    # yield the path-from-prefix rather than the pathjoined
 
960
                    # value.
 
961
                    bzrdir_loc = bisect_left(cur_disk_dir_content,
 
962
                                             ('.git', '.git'))
 
963
                    if (bzrdir_loc < len(cur_disk_dir_content) and
 
964
                        self.controldir.is_control_filename(
 
965
                            cur_disk_dir_content[bzrdir_loc][0])):
 
966
                        # we dont yield the contents of, or, .bzr itself.
 
967
                        del cur_disk_dir_content[bzrdir_loc]
 
968
            if inv_finished:
 
969
                # everything is unknown
 
970
                direction = 1
 
971
            elif disk_finished:
 
972
                # everything is missing
 
973
                direction = -1
 
974
            else:
 
975
                direction = ((current_inv[0][0] > cur_disk_dir_relpath)
 
976
                             - (current_inv[0][0] < cur_disk_dir_relpath))
 
977
            if direction > 0:
 
978
                # disk is before inventory - unknown
 
979
                dirblock = [(relpath, basename, kind, stat, None, None) for
 
980
                            relpath, basename, kind, stat, top_path in
 
981
                            cur_disk_dir_content]
 
982
                yield (cur_disk_dir_relpath, None), dirblock
 
983
                try:
 
984
                    current_disk = next(disk_iterator)
 
985
                except StopIteration:
 
986
                    disk_finished = True
 
987
            elif direction < 0:
 
988
                # inventory is before disk - missing.
 
989
                dirblock = [(relpath, basename, 'unknown', None, fileid, kind)
 
990
                            for relpath, basename, dkind, stat, fileid, kind in
 
991
                            current_inv[1]]
 
992
                yield (current_inv[0][0], current_inv[0][1]), dirblock
 
993
                try:
 
994
                    current_inv = next(inventory_iterator)
 
995
                except StopIteration:
 
996
                    inv_finished = True
 
997
            else:
 
998
                # versioned present directory
 
999
                # merge the inventory and disk data together
 
1000
                dirblock = []
 
1001
                for relpath, subiterator in itertools.groupby(sorted(
 
1002
                        current_inv[1] + cur_disk_dir_content,
 
1003
                        key=operator.itemgetter(0)), operator.itemgetter(1)):
 
1004
                    path_elements = list(subiterator)
 
1005
                    if len(path_elements) == 2:
 
1006
                        inv_row, disk_row = path_elements
 
1007
                        # versioned, present file
 
1008
                        dirblock.append((inv_row[0],
 
1009
                                         inv_row[1], disk_row[2],
 
1010
                                         disk_row[3], inv_row[4],
 
1011
                                         inv_row[5]))
 
1012
                    elif len(path_elements[0]) == 5:
 
1013
                        # unknown disk file
 
1014
                        dirblock.append(
 
1015
                            (path_elements[0][0], path_elements[0][1],
 
1016
                                path_elements[0][2], path_elements[0][3],
 
1017
                                None, None))
 
1018
                    elif len(path_elements[0]) == 6:
 
1019
                        # versioned, absent file.
 
1020
                        dirblock.append(
 
1021
                            (path_elements[0][0], path_elements[0][1],
 
1022
                                'unknown', None, path_elements[0][4],
 
1023
                                path_elements[0][5]))
 
1024
                    else:
 
1025
                        raise NotImplementedError('unreachable code')
 
1026
                yield current_inv[0], dirblock
 
1027
                try:
 
1028
                    current_inv = next(inventory_iterator)
 
1029
                except StopIteration:
 
1030
                    inv_finished = True
 
1031
                try:
 
1032
                    current_disk = next(disk_iterator)
 
1033
                except StopIteration:
 
1034
                    disk_finished = True
 
1035
 
 
1036
    def _walkdirs(self, prefix=u""):
 
1037
        if prefix != u"":
 
1038
            prefix += u"/"
 
1039
        prefix = prefix.encode('utf-8')
 
1040
        per_dir = defaultdict(set)
 
1041
        if prefix == b"":
 
1042
            per_dir[(u'', self.path2id(''))] = set()
 
1043
 
 
1044
        def add_entry(path, kind):
 
1045
            if path == b'' or not path.startswith(prefix):
 
1046
                return
 
1047
            (dirname, child_name) = posixpath.split(path)
 
1048
            add_entry(dirname, 'directory')
 
1049
            dirname = dirname.decode("utf-8")
 
1050
            dir_file_id = self.path2id(dirname)
 
1051
            if not isinstance(value, tuple) or len(value) != 10:
 
1052
                raise ValueError(value)
 
1053
            per_dir[(dirname, dir_file_id)].add(
 
1054
                (path.decode("utf-8"), child_name.decode("utf-8"),
 
1055
                 kind, None,
 
1056
                 self.path2id(path.decode("utf-8")),
 
1057
                 kind))
 
1058
        with self.lock_read():
 
1059
            for path, value in self.index.iteritems():
 
1060
                if self.mapping.is_special_file(path):
 
1061
                    continue
 
1062
                if not path.startswith(prefix):
 
1063
                    continue
 
1064
                add_entry(path, mode_kind(value.mode))
 
1065
        return ((k, sorted(v)) for (k, v) in sorted(per_dir.items()))
 
1066
 
 
1067
    def get_shelf_manager(self):
 
1068
        raise workingtree.ShelvingUnsupported()
 
1069
 
 
1070
    def store_uncommitted(self):
 
1071
        raise errors.StoringUncommittedNotSupported(self)
 
1072
 
 
1073
    def apply_inventory_delta(self, changes):
 
1074
        for (old_path, new_path, file_id, ie) in changes:
 
1075
            if old_path is not None:
 
1076
                (index, old_subpath) = self._lookup_index(
 
1077
                    old_path.encode('utf-8'))
 
1078
                try:
 
1079
                    self._index_del_entry(index, old_subpath)
 
1080
                except KeyError:
 
1081
                    pass
 
1082
                else:
 
1083
                    self._versioned_dirs = None
 
1084
            if new_path is not None and ie.kind != 'directory':
 
1085
                if ie.kind == 'tree-reference':
 
1086
                    self._index_add_entry(
 
1087
                        new_path, ie.kind,
 
1088
                        reference_revision=ie.reference_revision)
 
1089
                else:
 
1090
                    self._index_add_entry(new_path, ie.kind)
 
1091
        self.flush()
 
1092
 
 
1093
    def annotate_iter(self, path,
 
1094
                      default_revision=_mod_revision.CURRENT_REVISION):
 
1095
        """See Tree.annotate_iter
 
1096
 
 
1097
        This implementation will use the basis tree implementation if possible.
 
1098
        Lines not in the basis are attributed to CURRENT_REVISION
 
1099
 
 
1100
        If there are pending merges, lines added by those merges will be
 
1101
        incorrectly attributed to CURRENT_REVISION (but after committing, the
 
1102
        attribution will be correct).
 
1103
        """
 
1104
        with self.lock_read():
 
1105
            maybe_file_parent_keys = []
 
1106
            for parent_id in self.get_parent_ids():
 
1107
                try:
 
1108
                    parent_tree = self.revision_tree(parent_id)
 
1109
                except errors.NoSuchRevisionInTree:
 
1110
                    parent_tree = self.branch.repository.revision_tree(
 
1111
                        parent_id)
 
1112
                with parent_tree.lock_read():
 
1113
                    # TODO(jelmer): Use rename/copy tracker to find path name
 
1114
                    # in parent
 
1115
                    parent_path = path
 
1116
                    try:
 
1117
                        kind = parent_tree.kind(parent_path)
 
1118
                    except errors.NoSuchFile:
 
1119
                        continue
 
1120
                    if kind != 'file':
 
1121
                        # Note: this is slightly unnecessary, because symlinks
 
1122
                        # and directories have a "text" which is the empty
 
1123
                        # text, and we know that won't mess up annotations. But
 
1124
                        # it seems cleaner
 
1125
                        continue
 
1126
                    parent_text_key = (
 
1127
                        parent_path,
 
1128
                        parent_tree.get_file_revision(parent_path))
 
1129
                    if parent_text_key not in maybe_file_parent_keys:
 
1130
                        maybe_file_parent_keys.append(parent_text_key)
 
1131
            # Now we have the parents of this content
 
1132
            from breezy.annotate import Annotator
 
1133
            from .annotate import AnnotateProvider
 
1134
            annotate_provider = AnnotateProvider(
 
1135
                self.branch.repository._file_change_scanner)
 
1136
            annotator = Annotator(annotate_provider)
 
1137
 
 
1138
            from breezy.graph import Graph
 
1139
            graph = Graph(annotate_provider)
 
1140
            heads = graph.heads(maybe_file_parent_keys)
 
1141
            file_parent_keys = []
 
1142
            for key in maybe_file_parent_keys:
 
1143
                if key in heads:
 
1144
                    file_parent_keys.append(key)
 
1145
 
 
1146
            text = self.get_file_text(path)
 
1147
            this_key = (path, default_revision)
 
1148
            annotator.add_special_text(this_key, file_parent_keys, text)
 
1149
            annotations = [(key[-1], line)
 
1150
                           for key, line in annotator.annotate_flat(this_key)]
 
1151
            return annotations
 
1152
 
 
1153
    def _rename_one(self, from_rel, to_rel):
 
1154
        os.rename(self.abspath(from_rel), self.abspath(to_rel))
 
1155
 
 
1156
    def _build_checkout_with_index(self):
 
1157
        build_index_from_tree(
 
1158
            self.user_transport.local_abspath('.'),
 
1159
            self.control_transport.local_abspath("index"),
 
1160
            self.store,
 
1161
            None
 
1162
            if self.branch.head is None
 
1163
            else self.store[self.branch.head].tree,
 
1164
            honor_filemode=self._supports_executable())
 
1165
 
 
1166
    def reset_state(self, revision_ids=None):
 
1167
        """Reset the state of the working tree.
 
1168
 
 
1169
        This does a hard-reset to a last-known-good state. This is a way to
 
1170
        fix if something got corrupted (like the .git/index file)
 
1171
        """
 
1172
        with self.lock_tree_write():
 
1173
            if revision_ids is not None:
 
1174
                self.set_parent_ids(revision_ids)
 
1175
            self.index.clear()
 
1176
            self._index_dirty = True
 
1177
            if self.branch.head is not None:
 
1178
                for entry in self.store.iter_tree_contents(
 
1179
                        self.store[self.branch.head].tree):
 
1180
                    if not validate_path(entry.path):
 
1181
                        continue
 
1182
 
 
1183
                    if S_ISGITLINK(entry.mode):
 
1184
                        pass  # TODO(jelmer): record and return submodule paths
 
1185
                    else:
 
1186
                        # Let's at least try to use the working tree file:
 
1187
                        try:
 
1188
                            st = self._lstat(self.abspath(
 
1189
                                entry.path.decode('utf-8')))
 
1190
                        except OSError:
 
1191
                            # But if it doesn't exist, we'll make something up.
 
1192
                            obj = self.store[entry.sha]
 
1193
                            st = os.stat_result((entry.mode, 0, 0, 0,
 
1194
                                                 0, 0, len(
 
1195
                                                     obj.as_raw_string()), 0,
 
1196
                                                 0, 0))
 
1197
                    (index, subpath) = self._lookup_index(entry.path)
 
1198
                    index[subpath] = index_entry_from_stat(st, entry.sha, 0)
 
1199
 
 
1200
    def _update_git_tree(self, old_revision, new_revision, change_reporter=None,
 
1201
                         show_base=False):
 
1202
        basis_tree = self.revision_tree(old_revision)
 
1203
        if new_revision != old_revision:
 
1204
            with basis_tree.lock_read():
 
1205
                new_basis_tree = self.branch.basis_tree()
 
1206
                merge.merge_inner(
 
1207
                    self.branch,
 
1208
                    new_basis_tree,
 
1209
                    basis_tree,
 
1210
                    this_tree=self,
 
1211
                    change_reporter=change_reporter,
 
1212
                    show_base=show_base)
 
1213
 
 
1214
    def pull(self, source, overwrite=False, stop_revision=None,
 
1215
             change_reporter=None, possible_transports=None, local=False,
 
1216
             show_base=False, tag_selector=None):
 
1217
        with self.lock_write(), source.lock_read():
 
1218
            old_revision = self.branch.last_revision()
 
1219
            count = self.branch.pull(source, overwrite, stop_revision,
 
1220
                                     possible_transports=possible_transports,
 
1221
                                     local=local, tag_selector=tag_selector)
 
1222
            self._update_git_tree(
 
1223
                old_revision=old_revision,
 
1224
                new_revision=self.branch.last_revision(),
 
1225
                change_reporter=change_reporter,
 
1226
                show_base=show_base)
 
1227
            return count
 
1228
 
 
1229
    def add_reference(self, sub_tree):
 
1230
        """Add a TreeReference to the tree, pointing at sub_tree.
 
1231
 
 
1232
        :param sub_tree: subtree to add.
 
1233
        """
 
1234
        with self.lock_tree_write():
 
1235
            try:
 
1236
                sub_tree_path = self.relpath(sub_tree.basedir)
 
1237
            except errors.PathNotChild:
 
1238
                raise BadReferenceTarget(
 
1239
                    self, sub_tree, 'Target not inside tree.')
 
1240
 
 
1241
            self._add([sub_tree_path], [None], ['tree-reference'])
 
1242
 
 
1243
    def _read_submodule_head(self, path):
 
1244
        return read_submodule_head(self.abspath(path))
 
1245
 
 
1246
    def get_reference_revision(self, path, branch=None):
 
1247
        hexsha = self._read_submodule_head(path)
 
1248
        if hexsha is None:
 
1249
            return _mod_revision.NULL_REVISION
 
1250
        return self.branch.lookup_foreign_revision_id(hexsha)
 
1251
 
 
1252
    def get_nested_tree(self, path):
 
1253
        return workingtree.WorkingTree.open(self.abspath(path))
 
1254
 
 
1255
    def _directory_is_tree_reference(self, relpath):
 
1256
        # as a special case, if a directory contains control files then
 
1257
        # it's a tree reference, except that the root of the tree is not
 
1258
        return relpath and osutils.lexists(self.abspath(relpath) + u"/.git")
 
1259
 
 
1260
    def extract(self, sub_path, format=None):
 
1261
        """Extract a subtree from this tree.
 
1262
 
 
1263
        A new branch will be created, relative to the path for this tree.
 
1264
        """
 
1265
        def mkdirs(path):
 
1266
            segments = osutils.splitpath(path)
 
1267
            transport = self.branch.controldir.root_transport
 
1268
            for name in segments:
 
1269
                transport = transport.clone(name)
 
1270
                transport.ensure_base()
 
1271
            return transport
 
1272
 
 
1273
        with self.lock_tree_write():
 
1274
            self.flush()
 
1275
            branch_transport = mkdirs(sub_path)
 
1276
            if format is None:
 
1277
                format = self.controldir.cloning_metadir()
 
1278
            branch_transport.ensure_base()
 
1279
            branch_bzrdir = format.initialize_on_transport(branch_transport)
 
1280
            try:
 
1281
                repo = branch_bzrdir.find_repository()
 
1282
            except errors.NoRepositoryPresent:
 
1283
                repo = branch_bzrdir.create_repository()
 
1284
            if not repo.supports_rich_root():
 
1285
                raise errors.RootNotRich()
 
1286
            new_branch = branch_bzrdir.create_branch()
 
1287
            new_branch.pull(self.branch)
 
1288
            for parent_id in self.get_parent_ids():
 
1289
                new_branch.fetch(self.branch, parent_id)
 
1290
            tree_transport = self.controldir.root_transport.clone(sub_path)
 
1291
            if tree_transport.base != branch_transport.base:
 
1292
                tree_bzrdir = format.initialize_on_transport(tree_transport)
 
1293
                tree_bzrdir.set_branch_reference(new_branch)
 
1294
            else:
 
1295
                tree_bzrdir = branch_bzrdir
 
1296
            wt = tree_bzrdir.create_workingtree(_mod_revision.NULL_REVISION)
 
1297
            wt.set_parent_ids(self.get_parent_ids())
 
1298
            return wt
 
1299
 
 
1300
    def _get_check_refs(self):
 
1301
        """Return the references needed to perform a check of this tree.
 
1302
 
 
1303
        The default implementation returns no refs, and is only suitable for
 
1304
        trees that have no local caching and can commit on ghosts at any time.
 
1305
 
 
1306
        :seealso: breezy.check for details about check_refs.
 
1307
        """
 
1308
        return []
 
1309
 
 
1310
    def copy_content_into(self, tree, revision_id=None):
 
1311
        """Copy the current content and user files of this tree into tree."""
 
1312
        with self.lock_read():
 
1313
            if revision_id is None:
 
1314
                merge.transform_tree(tree, self)
 
1315
            else:
 
1316
                # TODO now merge from tree.last_revision to revision (to
 
1317
                # preserve user local changes)
 
1318
                try:
 
1319
                    other_tree = self.revision_tree(revision_id)
 
1320
                except errors.NoSuchRevision:
 
1321
                    other_tree = self.branch.repository.revision_tree(
 
1322
                        revision_id)
 
1323
 
 
1324
                merge.transform_tree(tree, other_tree)
 
1325
                if revision_id == _mod_revision.NULL_REVISION:
 
1326
                    new_parents = []
 
1327
                else:
 
1328
                    new_parents = [revision_id]
 
1329
                tree.set_parent_ids(new_parents)
 
1330
 
 
1331
    def reference_parent(self, path, possible_transports=None):
 
1332
        remote_url = self.get_reference_info(path)
 
1333
        if remote_url is None:
 
1334
            trace.warning("Unable to find submodule info for %s", path)
 
1335
            return None
 
1336
        return _mod_branch.Branch.open(remote_url, possible_transports=possible_transports)
 
1337
 
 
1338
    def get_reference_info(self, path):
 
1339
        submodule_info = self._submodule_info()
 
1340
        info = submodule_info.get(path.encode('utf-8'))
 
1341
        if info is None:
 
1342
            return None
 
1343
        return info[0].decode('utf-8')
 
1344
 
 
1345
    def set_reference_info(self, tree_path, branch_location):
 
1346
        path = self.abspath('.gitmodules')
 
1347
        try:
 
1348
            config = GitConfigFile.from_path(path)
 
1349
        except EnvironmentError as e:
 
1350
            if e.errno == errno.ENOENT:
 
1351
                config = GitConfigFile()
 
1352
            else:
 
1353
                raise
 
1354
        section = (b'submodule', tree_path.encode('utf-8'))
 
1355
        if branch_location is None:
 
1356
            try:
 
1357
                del config[section]
 
1358
            except KeyError:
 
1359
                pass
 
1360
        else:
 
1361
            branch_location = urlutils.join(
 
1362
                urlutils.strip_segment_parameters(self.branch.user_url),
 
1363
                branch_location)
 
1364
            config.set(
 
1365
                section,
 
1366
                b'path', tree_path.encode('utf-8'))
 
1367
            config.set(
 
1368
                section,
 
1369
                b'url', branch_location.encode('utf-8'))
 
1370
        config.write_to_path(path)
 
1371
        self.add('.gitmodules')
 
1372
 
 
1373
 
 
1374
class GitWorkingTreeFormat(workingtree.WorkingTreeFormat):
 
1375
 
 
1376
    _tree_class = GitWorkingTree
 
1377
 
 
1378
    supports_versioned_directories = False
 
1379
 
 
1380
    supports_setting_file_ids = False
 
1381
 
 
1382
    supports_store_uncommitted = False
 
1383
 
 
1384
    supports_leftmost_parent_id_as_ghost = False
 
1385
 
 
1386
    supports_righthand_parent_id_as_ghost = False
 
1387
 
 
1388
    requires_normalized_unicode_filenames = True
 
1389
 
 
1390
    supports_merge_modified = False
 
1391
 
 
1392
    ignore_filename = ".gitignore"
 
1393
 
 
1394
    @property
 
1395
    def _matchingcontroldir(self):
 
1396
        from .dir import LocalGitControlDirFormat
 
1397
        return LocalGitControlDirFormat()
 
1398
 
 
1399
    def get_format_description(self):
 
1400
        return "Git Working Tree"
 
1401
 
 
1402
    def initialize(self, a_controldir, revision_id=None, from_branch=None,
 
1403
                   accelerator_tree=None, hardlink=False):
 
1404
        """See WorkingTreeFormat.initialize()."""
 
1405
        if not isinstance(a_controldir, LocalGitDir):
 
1406
            raise errors.IncompatibleFormat(self, a_controldir)
 
1407
        branch = a_controldir.open_branch(nascent_ok=True)
 
1408
        if revision_id is not None:
 
1409
            branch.set_last_revision(revision_id)
 
1410
        wt = GitWorkingTree(
 
1411
            a_controldir, a_controldir.open_repository(), branch)
 
1412
        for hook in MutableTree.hooks['post_build_tree']:
 
1413
            hook(wt)
 
1414
        return wt