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  • Committer: Jelmer Vernooij
  • Date: 2018-11-21 22:07:46 UTC
  • mto: This revision was merged to the branch mainline in revision 7208.
  • Revision ID: jelmer@jelmer.uk-20181121220746-l1tynnionjpjrdzn
Handle overflow errors on Python 2.

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