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Viewing changes to breezy/plugins/git/workingtree.py

  • Committer: Jelmer Vernooij
  • Date: 2018-07-17 21:20:55 UTC
  • mto: (7045.3.3 python3-r)
  • mto: This revision was merged to the branch mainline in revision 7050.
  • Revision ID: jelmer@jelmer.uk-20180717212055-apkv1s70oo6wpi6o
Fix a few more tests.

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