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breezy/git/tree.py
 
1
# Copyright (C) 2009-2018 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
"""Git Trees."""
 
19
 
 
20
from __future__ import absolute_import
 
21
 
 
22
from collections import deque
 
23
import errno
 
24
from io import BytesIO
 
25
import os
 
26
 
 
27
from dulwich.index import (
 
28
    blob_from_path_and_stat,
 
29
    cleanup_mode,
 
30
    commit_tree,
 
31
    index_entry_from_stat,
 
32
    )
 
33
from dulwich.object_store import (
 
34
    tree_lookup_path,
 
35
    OverlayObjectStore,
 
36
    )
 
37
from dulwich.objects import (
 
38
    Blob,
 
39
    Tree,
 
40
    ZERO_SHA,
 
41
    S_IFGITLINK,
 
42
    S_ISGITLINK,
 
43
    )
 
44
import stat
 
45
import posixpath
 
46
 
 
47
from .. import (
 
48
    controldir as _mod_controldir,
 
49
    delta,
 
50
    errors,
 
51
    mutabletree,
 
52
    osutils,
 
53
    revisiontree,
 
54
    trace,
 
55
    tree as _mod_tree,
 
56
    workingtree,
 
57
    )
 
58
from ..revision import (
 
59
    CURRENT_REVISION,
 
60
    NULL_REVISION,
 
61
    )
 
62
from ..sixish import (
 
63
    text_type,
 
64
    viewitems,
 
65
    )
 
66
 
 
67
from .mapping import (
 
68
    mode_is_executable,
 
69
    mode_kind,
 
70
    GitFileIdMap,
 
71
    default_mapping,
 
72
    )
 
73
 
 
74
 
 
75
class GitTreeDirectory(_mod_tree.TreeDirectory):
 
76
 
 
77
    __slots__ = ['file_id', 'name', 'parent_id', 'children']
 
78
 
 
79
    def __init__(self, file_id, name, parent_id):
 
80
        self.file_id = file_id
 
81
        self.name = name
 
82
        self.parent_id = parent_id
 
83
        # TODO(jelmer)
 
84
        self.children = {}
 
85
 
 
86
    @property
 
87
    def kind(self):
 
88
        return 'directory'
 
89
 
 
90
    @property
 
91
    def executable(self):
 
92
        return False
 
93
 
 
94
    def copy(self):
 
95
        return self.__class__(
 
96
            self.file_id, self.name, self.parent_id)
 
97
 
 
98
    def __repr__(self):
 
99
        return "%s(file_id=%r, name=%r, parent_id=%r)" % (
 
100
            self.__class__.__name__, self.file_id, self.name,
 
101
            self.parent_id)
 
102
 
 
103
    def __eq__(self, other):
 
104
        return (self.kind == other.kind and
 
105
                self.file_id == other.file_id and
 
106
                self.name == other.name and
 
107
                self.parent_id == other.parent_id)
 
108
 
 
109
 
 
110
class GitTreeFile(_mod_tree.TreeFile):
 
111
 
 
112
    __slots__ = ['file_id', 'name', 'parent_id', 'text_size', 'text_sha1',
 
113
                 'executable']
 
114
 
 
115
    def __init__(self, file_id, name, parent_id, text_size=None,
 
116
                 text_sha1=None, executable=None):
 
117
        self.file_id = file_id
 
118
        self.name = name
 
119
        self.parent_id = parent_id
 
120
        self.text_size = text_size
 
121
        self.text_sha1 = text_sha1
 
122
        self.executable = executable
 
123
 
 
124
    @property
 
125
    def kind(self):
 
126
        return 'file'
 
127
 
 
128
    def __eq__(self, other):
 
129
        return (self.kind == other.kind and
 
130
                self.file_id == other.file_id and
 
131
                self.name == other.name and
 
132
                self.parent_id == other.parent_id and
 
133
                self.text_sha1 == other.text_sha1 and
 
134
                self.text_size == other.text_size and
 
135
                self.executable == other.executable)
 
136
 
 
137
    def __repr__(self):
 
138
        return ("%s(file_id=%r, name=%r, parent_id=%r, text_size=%r, "
 
139
                "text_sha1=%r, executable=%r)") % (
 
140
            type(self).__name__, self.file_id, self.name, self.parent_id,
 
141
            self.text_size, self.text_sha1, self.executable)
 
142
 
 
143
    def copy(self):
 
144
        ret = self.__class__(
 
145
            self.file_id, self.name, self.parent_id)
 
146
        ret.text_sha1 = self.text_sha1
 
147
        ret.text_size = self.text_size
 
148
        ret.executable = self.executable
 
149
        return ret
 
150
 
 
151
 
 
152
class GitTreeSymlink(_mod_tree.TreeLink):
 
153
 
 
154
    __slots__ = ['file_id', 'name', 'parent_id', 'symlink_target']
 
155
 
 
156
    def __init__(self, file_id, name, parent_id,
 
157
                 symlink_target=None):
 
158
        self.file_id = file_id
 
159
        self.name = name
 
160
        self.parent_id = parent_id
 
161
        self.symlink_target = symlink_target
 
162
 
 
163
    @property
 
164
    def kind(self):
 
165
        return 'symlink'
 
166
 
 
167
    @property
 
168
    def executable(self):
 
169
        return False
 
170
 
 
171
    @property
 
172
    def text_size(self):
 
173
        return None
 
174
 
 
175
    def __repr__(self):
 
176
        return "%s(file_id=%r, name=%r, parent_id=%r, symlink_target=%r)" % (
 
177
            type(self).__name__, self.file_id, self.name, self.parent_id,
 
178
            self.symlink_target)
 
179
 
 
180
    def __eq__(self, other):
 
181
        return (self.kind == other.kind and
 
182
                self.file_id == other.file_id and
 
183
                self.name == other.name and
 
184
                self.parent_id == other.parent_id and
 
185
                self.symlink_target == other.symlink_target)
 
186
 
 
187
    def copy(self):
 
188
        return self.__class__(
 
189
            self.file_id, self.name, self.parent_id,
 
190
            self.symlink_target)
 
191
 
 
192
 
 
193
class GitTreeSubmodule(_mod_tree.TreeLink):
 
194
 
 
195
    __slots__ = ['file_id', 'name', 'parent_id', 'reference_revision']
 
196
 
 
197
    def __init__(self, file_id, name, parent_id, reference_revision=None):
 
198
        self.file_id = file_id
 
199
        self.name = name
 
200
        self.parent_id = parent_id
 
201
        self.reference_revision = reference_revision
 
202
 
 
203
    @property
 
204
    def kind(self):
 
205
        return 'tree-reference'
 
206
 
 
207
    def __repr__(self):
 
208
        return ("%s(file_id=%r, name=%r, parent_id=%r, "
 
209
                "reference_revision=%r)") % (
 
210
            type(self).__name__, self.file_id, self.name, self.parent_id,
 
211
            self.reference_revision)
 
212
 
 
213
    def __eq__(self, other):
 
214
        return (self.kind == other.kind and
 
215
                self.file_id == other.file_id and
 
216
                self.name == other.name and
 
217
                self.parent_id == other.parent_id and
 
218
                self.reference_revision == other.reference_revision)
 
219
 
 
220
    def copy(self):
 
221
        return self.__class__(
 
222
            self.file_id, self.name, self.parent_id,
 
223
            self.reference_revision)
 
224
 
 
225
 
 
226
entry_factory = {
 
227
    'directory': GitTreeDirectory,
 
228
    'file': GitTreeFile,
 
229
    'symlink': GitTreeSymlink,
 
230
    'tree-reference': GitTreeSubmodule,
 
231
    }
 
232
 
 
233
 
 
234
def ensure_normalized_path(path):
 
235
    """Check whether path is normalized.
 
236
 
 
237
    :raises InvalidNormalization: When path is not normalized, and cannot be
 
238
        accessed on this platform by the normalized path.
 
239
    :return: The NFC normalised version of path.
 
240
    """
 
241
    norm_path, can_access = osutils.normalized_filename(path)
 
242
    if norm_path != path:
 
243
        if can_access:
 
244
            return norm_path
 
245
        else:
 
246
            raise errors.InvalidNormalization(path)
 
247
    return path
 
248
 
 
249
 
 
250
class GitRevisionTree(revisiontree.RevisionTree):
 
251
    """Revision tree implementation based on Git objects."""
 
252
 
 
253
    def __init__(self, repository, revision_id):
 
254
        self._revision_id = revision_id
 
255
        self._repository = repository
 
256
        self.store = repository._git.object_store
 
257
        if not isinstance(revision_id, bytes):
 
258
            raise TypeError(revision_id)
 
259
        self.commit_id, self.mapping = repository.lookup_bzr_revision_id(
 
260
            revision_id)
 
261
        if revision_id == NULL_REVISION:
 
262
            self.tree = None
 
263
            self.mapping = default_mapping
 
264
            self._fileid_map = GitFileIdMap(
 
265
                {},
 
266
                default_mapping)
 
267
        else:
 
268
            try:
 
269
                commit = self.store[self.commit_id]
 
270
            except KeyError:
 
271
                raise errors.NoSuchRevision(repository, revision_id)
 
272
            self.tree = commit.tree
 
273
            self._fileid_map = self.mapping.get_fileid_map(
 
274
                self.store.__getitem__, self.tree)
 
275
 
 
276
    def _get_nested_repository(self, path):
 
277
        nested_repo_transport = self._repository.user_transport.clone(path)
 
278
        nested_controldir = _mod_controldir.ControlDir.open_from_transport(
 
279
            nested_repo_transport)
 
280
        return nested_controldir.find_repository()
 
281
 
 
282
    def supports_rename_tracking(self):
 
283
        return False
 
284
 
 
285
    def get_file_revision(self, path, file_id=None):
 
286
        change_scanner = self._repository._file_change_scanner
 
287
        if self.commit_id == ZERO_SHA:
 
288
            return NULL_REVISION
 
289
        (unused_path, commit_id) = change_scanner.find_last_change_revision(
 
290
            path.encode('utf-8'), self.commit_id)
 
291
        return self._repository.lookup_foreign_revision_id(
 
292
            commit_id, self.mapping)
 
293
 
 
294
    def get_file_mtime(self, path, file_id=None):
 
295
        try:
 
296
            revid = self.get_file_revision(path, file_id)
 
297
        except KeyError:
 
298
            raise errors.NoSuchFile(path)
 
299
        try:
 
300
            rev = self._repository.get_revision(revid)
 
301
        except errors.NoSuchRevision:
 
302
            raise _mod_tree.FileTimestampUnavailable(path)
 
303
        return rev.timestamp
 
304
 
 
305
    def id2path(self, file_id):
 
306
        try:
 
307
            path = self._fileid_map.lookup_path(file_id)
 
308
        except ValueError:
 
309
            raise errors.NoSuchId(self, file_id)
 
310
        if self.is_versioned(path):
 
311
            return path
 
312
        raise errors.NoSuchId(self, file_id)
 
313
 
 
314
    def is_versioned(self, path):
 
315
        return self.has_filename(path)
 
316
 
 
317
    def path2id(self, path):
 
318
        if self.mapping.is_special_file(path):
 
319
            return None
 
320
        if not self.is_versioned(path):
 
321
            return None
 
322
        return self._fileid_map.lookup_file_id(osutils.safe_unicode(path))
 
323
 
 
324
    def all_file_ids(self):
 
325
        return {self.path2id(path) for path in self.all_versioned_paths()}
 
326
 
 
327
    def all_versioned_paths(self):
 
328
        ret = {u''}
 
329
        todo = [(self.store, b'', self.tree)]
 
330
        while todo:
 
331
            (store, path, tree_id) = todo.pop()
 
332
            if tree_id is None:
 
333
                continue
 
334
            tree = store[tree_id]
 
335
            for name, mode, hexsha in tree.items():
 
336
                subpath = posixpath.join(path, name)
 
337
                ret.add(subpath.decode('utf-8'))
 
338
                if stat.S_ISDIR(mode):
 
339
                    todo.append((store, subpath, hexsha))
 
340
        return ret
 
341
 
 
342
    def get_root_id(self):
 
343
        if self.tree is None:
 
344
            return None
 
345
        return self.path2id("")
 
346
 
 
347
    def has_or_had_id(self, file_id):
 
348
        try:
 
349
            self.id2path(file_id)
 
350
        except errors.NoSuchId:
 
351
            return False
 
352
        return True
 
353
 
 
354
    def has_id(self, file_id):
 
355
        try:
 
356
            path = self.id2path(file_id)
 
357
        except errors.NoSuchId:
 
358
            return False
 
359
        return self.has_filename(path)
 
360
 
 
361
    def _lookup_path(self, path):
 
362
        if self.tree is None:
 
363
            raise errors.NoSuchFile(path)
 
364
        try:
 
365
            (mode, hexsha) = tree_lookup_path(
 
366
                self.store.__getitem__, self.tree, path.encode('utf-8'))
 
367
        except KeyError:
 
368
            raise errors.NoSuchFile(self, path)
 
369
        else:
 
370
            return (self.store, mode, hexsha)
 
371
 
 
372
    def is_executable(self, path, file_id=None):
 
373
        (store, mode, hexsha) = self._lookup_path(path)
 
374
        if mode is None:
 
375
            # the tree root is a directory
 
376
            return False
 
377
        return mode_is_executable(mode)
 
378
 
 
379
    def kind(self, path, file_id=None):
 
380
        (store, mode, hexsha) = self._lookup_path(path)
 
381
        if mode is None:
 
382
            # the tree root is a directory
 
383
            return "directory"
 
384
        return mode_kind(mode)
 
385
 
 
386
    def has_filename(self, path):
 
387
        try:
 
388
            self._lookup_path(path)
 
389
        except errors.NoSuchFile:
 
390
            return False
 
391
        else:
 
392
            return True
 
393
 
 
394
    def list_files(self, include_root=False, from_dir=None, recursive=True):
 
395
        if self.tree is None:
 
396
            return
 
397
        if from_dir is None:
 
398
            from_dir = u""
 
399
        (store, mode, hexsha) = self._lookup_path(from_dir)
 
400
        if mode is None:  # Root
 
401
            root_ie = self._get_dir_ie(b"", None)
 
402
        else:
 
403
            parent_path = posixpath.dirname(from_dir)
 
404
            parent_id = self._fileid_map.lookup_file_id(parent_path)
 
405
            if mode_kind(mode) == 'directory':
 
406
                root_ie = self._get_dir_ie(from_dir.encode("utf-8"), parent_id)
 
407
            else:
 
408
                root_ie = self._get_file_ie(
 
409
                    store, from_dir.encode("utf-8"),
 
410
                    posixpath.basename(from_dir), mode, hexsha)
 
411
        if include_root:
 
412
            yield (from_dir, "V", root_ie.kind, root_ie.file_id, root_ie)
 
413
        todo = []
 
414
        if root_ie.kind == 'directory':
 
415
            todo.append((store, from_dir.encode("utf-8"),
 
416
                         b"", hexsha, root_ie.file_id))
 
417
        while todo:
 
418
            (store, path, relpath, hexsha, parent_id) = todo.pop()
 
419
            tree = store[hexsha]
 
420
            for name, mode, hexsha in tree.iteritems():
 
421
                if self.mapping.is_special_file(name):
 
422
                    continue
 
423
                child_path = posixpath.join(path, name)
 
424
                child_relpath = posixpath.join(relpath, name)
 
425
                if stat.S_ISDIR(mode):
 
426
                    ie = self._get_dir_ie(child_path, parent_id)
 
427
                    if recursive:
 
428
                        todo.append(
 
429
                            (store, child_path, child_relpath, hexsha,
 
430
                             ie.file_id))
 
431
                else:
 
432
                    ie = self._get_file_ie(
 
433
                        store, child_path, name, mode, hexsha, parent_id)
 
434
                yield (child_relpath.decode('utf-8'), "V", ie.kind, ie.file_id,
 
435
                       ie)
 
436
 
 
437
    def _get_file_ie(self, store, path, name, mode, hexsha, parent_id):
 
438
        if not isinstance(path, bytes):
 
439
            raise TypeError(path)
 
440
        if not isinstance(name, bytes):
 
441
            raise TypeError(name)
 
442
        kind = mode_kind(mode)
 
443
        path = path.decode('utf-8')
 
444
        name = name.decode("utf-8")
 
445
        file_id = self._fileid_map.lookup_file_id(path)
 
446
        ie = entry_factory[kind](file_id, name, parent_id)
 
447
        if kind == 'symlink':
 
448
            ie.symlink_target = store[hexsha].data.decode('utf-8')
 
449
        elif kind == 'tree-reference':
 
450
            ie.reference_revision = self.mapping.revision_id_foreign_to_bzr(
 
451
                hexsha)
 
452
        else:
 
453
            data = store[hexsha].data
 
454
            ie.text_sha1 = osutils.sha_string(data)
 
455
            ie.text_size = len(data)
 
456
            ie.executable = mode_is_executable(mode)
 
457
        return ie
 
458
 
 
459
    def _get_dir_ie(self, path, parent_id):
 
460
        path = path.decode('utf-8')
 
461
        file_id = self._fileid_map.lookup_file_id(path)
 
462
        return GitTreeDirectory(file_id, posixpath.basename(path), parent_id)
 
463
 
 
464
    def iter_child_entries(self, path, file_id=None):
 
465
        (store, mode, tree_sha) = self._lookup_path(path)
 
466
 
 
467
        if mode is not None and not stat.S_ISDIR(mode):
 
468
            return
 
469
 
 
470
        encoded_path = path.encode('utf-8')
 
471
        file_id = self.path2id(path)
 
472
        tree = store[tree_sha]
 
473
        for name, mode, hexsha in tree.iteritems():
 
474
            if self.mapping.is_special_file(name):
 
475
                continue
 
476
            child_path = posixpath.join(encoded_path, name)
 
477
            if stat.S_ISDIR(mode):
 
478
                yield self._get_dir_ie(child_path, file_id)
 
479
            else:
 
480
                yield self._get_file_ie(store, child_path, name, mode, hexsha,
 
481
                                        file_id)
 
482
 
 
483
    def iter_entries_by_dir(self, specific_files=None, yield_parents=False):
 
484
        if self.tree is None:
 
485
            return
 
486
        if yield_parents:
 
487
            # TODO(jelmer): Support yield parents
 
488
            raise NotImplementedError
 
489
        if specific_files is not None:
 
490
            if specific_files in ([""], []):
 
491
                specific_files = None
 
492
            else:
 
493
                specific_files = set([p.encode('utf-8')
 
494
                                      for p in specific_files])
 
495
        todo = deque([(self.store, b"", self.tree, self.get_root_id())])
 
496
        if specific_files is None or u"" in specific_files:
 
497
            yield u"", self._get_dir_ie(b"", None)
 
498
        while todo:
 
499
            store, path, tree_sha, parent_id = todo.popleft()
 
500
            tree = store[tree_sha]
 
501
            extradirs = []
 
502
            for name, mode, hexsha in tree.iteritems():
 
503
                if self.mapping.is_special_file(name):
 
504
                    continue
 
505
                child_path = posixpath.join(path, name)
 
506
                child_path_decoded = child_path.decode('utf-8')
 
507
                if stat.S_ISDIR(mode):
 
508
                    if (specific_files is None or
 
509
                            any([p for p in specific_files if p.startswith(
 
510
                                child_path)])):
 
511
                        extradirs.append(
 
512
                            (store, child_path, hexsha,
 
513
                             self.path2id(child_path_decoded)))
 
514
                if specific_files is None or child_path in specific_files:
 
515
                    if stat.S_ISDIR(mode):
 
516
                        yield (child_path_decoded,
 
517
                               self._get_dir_ie(child_path, parent_id))
 
518
                    else:
 
519
                        yield (child_path_decoded,
 
520
                               self._get_file_ie(store, child_path, name, mode,
 
521
                                                 hexsha, parent_id))
 
522
            todo.extendleft(reversed(extradirs))
 
523
 
 
524
    def iter_references(self):
 
525
        if self.supports_tree_reference():
 
526
            for path, entry in self.iter_entries_by_dir():
 
527
                if entry.kind == 'tree-reference':
 
528
                    yield path, self.mapping.generate_file_id(b'')
 
529
 
 
530
    def get_revision_id(self):
 
531
        """See RevisionTree.get_revision_id."""
 
532
        return self._revision_id
 
533
 
 
534
    def get_file_sha1(self, path, file_id=None, stat_value=None):
 
535
        if self.tree is None:
 
536
            raise errors.NoSuchFile(path)
 
537
        return osutils.sha_string(self.get_file_text(path, file_id))
 
538
 
 
539
    def get_file_verifier(self, path, file_id=None, stat_value=None):
 
540
        (store, mode, hexsha) = self._lookup_path(path)
 
541
        return ("GIT", hexsha)
 
542
 
 
543
    def get_file_size(self, path, file_id=None):
 
544
        (store, mode, hexsha) = self._lookup_path(path)
 
545
        if stat.S_ISREG(mode):
 
546
            return len(store[hexsha].data)
 
547
        return None
 
548
 
 
549
    def get_file_text(self, path, file_id=None):
 
550
        """See RevisionTree.get_file_text."""
 
551
        (store, mode, hexsha) = self._lookup_path(path)
 
552
        if stat.S_ISREG(mode):
 
553
            return store[hexsha].data
 
554
        else:
 
555
            return b""
 
556
 
 
557
    def get_symlink_target(self, path, file_id=None):
 
558
        """See RevisionTree.get_symlink_target."""
 
559
        (store, mode, hexsha) = self._lookup_path(path)
 
560
        if stat.S_ISLNK(mode):
 
561
            return store[hexsha].data.decode('utf-8')
 
562
        else:
 
563
            return None
 
564
 
 
565
    def get_reference_revision(self, path, file_id=None):
 
566
        """See RevisionTree.get_symlink_target."""
 
567
        (store, mode, hexsha) = self._lookup_path(path)
 
568
        if S_ISGITLINK(mode):
 
569
            nested_repo = self._get_nested_repository(path)
 
570
            return nested_repo.lookup_foreign_revision_id(hexsha)
 
571
        else:
 
572
            return None
 
573
 
 
574
    def _comparison_data(self, entry, path):
 
575
        if entry is None:
 
576
            return None, False, None
 
577
        return entry.kind, entry.executable, None
 
578
 
 
579
    def path_content_summary(self, path):
 
580
        """See Tree.path_content_summary."""
 
581
        try:
 
582
            (store, mode, hexsha) = self._lookup_path(path)
 
583
        except errors.NoSuchFile:
 
584
            return ('missing', None, None, None)
 
585
        kind = mode_kind(mode)
 
586
        if kind == 'file':
 
587
            executable = mode_is_executable(mode)
 
588
            contents = store[hexsha].data
 
589
            return (kind, len(contents), executable,
 
590
                    osutils.sha_string(contents))
 
591
        elif kind == 'symlink':
 
592
            return (kind, None, None, store[hexsha].data.decode('utf-8'))
 
593
        elif kind == 'tree-reference':
 
594
            nested_repo = self._get_nested_repository(path)
 
595
            return (kind, None, None,
 
596
                    nested_repo.lookup_foreign_revision_id(hexsha))
 
597
        else:
 
598
            return (kind, None, None, None)
 
599
 
 
600
    def find_related_paths_across_trees(self, paths, trees=[],
 
601
                                        require_versioned=True):
 
602
        if paths is None:
 
603
            return None
 
604
        if require_versioned:
 
605
            trees = [self] + (trees if trees is not None else [])
 
606
            unversioned = set()
 
607
            for p in paths:
 
608
                for t in trees:
 
609
                    if t.is_versioned(p):
 
610
                        break
 
611
                else:
 
612
                    unversioned.add(p)
 
613
            if unversioned:
 
614
                raise errors.PathsNotVersionedError(unversioned)
 
615
        return filter(self.is_versioned, paths)
 
616
 
 
617
    def _iter_tree_contents(self, include_trees=False):
 
618
        if self.tree is None:
 
619
            return iter([])
 
620
        return self.store.iter_tree_contents(
 
621
            self.tree, include_trees=include_trees)
 
622
 
 
623
    def annotate_iter(self, path, file_id=None,
 
624
                      default_revision=CURRENT_REVISION):
 
625
        """Return an iterator of revision_id, line tuples.
 
626
 
 
627
        For working trees (and mutable trees in general), the special
 
628
        revision_id 'current:' will be used for lines that are new in this
 
629
        tree, e.g. uncommitted changes.
 
630
        :param file_id: The file to produce an annotated version from
 
631
        :param default_revision: For lines that don't match a basis, mark them
 
632
            with this revision id. Not all implementations will make use of
 
633
            this value.
 
634
        """
 
635
        with self.lock_read():
 
636
            # Now we have the parents of this content
 
637
            from breezy.annotate import Annotator
 
638
            from .annotate import AnnotateProvider
 
639
            annotator = Annotator(AnnotateProvider(
 
640
                self._repository._file_change_scanner))
 
641
            this_key = (path, self.get_file_revision(path))
 
642
            annotations = [(key[-1], line)
 
643
                           for key, line in annotator.annotate_flat(this_key)]
 
644
            return annotations
 
645
 
 
646
    def _get_rules_searcher(self, default_searcher):
 
647
        return default_searcher
 
648
 
 
649
    def walkdirs(self, prefix=u""):
 
650
        (store, mode, hexsha) = self._lookup_path(prefix)
 
651
        todo = deque(
 
652
            [(store, prefix.encode('utf-8'), hexsha, self.path2id(prefix))])
 
653
        while todo:
 
654
            store, path, tree_sha, parent_id = todo.popleft()
 
655
            path_decoded = path.decode('utf-8')
 
656
            tree = store[tree_sha]
 
657
            children = []
 
658
            for name, mode, hexsha in tree.iteritems():
 
659
                if self.mapping.is_special_file(name):
 
660
                    continue
 
661
                child_path = posixpath.join(path, name)
 
662
                file_id = self.path2id(child_path.decode('utf-8'))
 
663
                if stat.S_ISDIR(mode):
 
664
                    todo.append((store, child_path, hexsha, file_id))
 
665
                children.append(
 
666
                    (child_path.decode('utf-8'), name.decode('utf-8'),
 
667
                        mode_kind(mode), None,
 
668
                        file_id, mode_kind(mode)))
 
669
            yield (path_decoded, parent_id), children
 
670
 
 
671
 
 
672
def tree_delta_from_git_changes(changes, mapping,
 
673
                                fileid_maps, specific_files=None,
 
674
                                require_versioned=False, include_root=False,
 
675
                                target_extras=None):
 
676
    """Create a TreeDelta from two git trees.
 
677
 
 
678
    source and target are iterators over tuples with:
 
679
        (filename, sha, mode)
 
680
    """
 
681
    (old_fileid_map, new_fileid_map) = fileid_maps
 
682
    if target_extras is None:
 
683
        target_extras = set()
 
684
    ret = delta.TreeDelta()
 
685
    for (oldpath, newpath), (oldmode, newmode), (oldsha, newsha) in changes:
 
686
        if newpath == b'' and not include_root:
 
687
            continue
 
688
        if oldpath is None:
 
689
            oldpath_decoded = None
 
690
        else:
 
691
            oldpath_decoded = oldpath.decode('utf-8')
 
692
        if newpath is None:
 
693
            newpath_decoded = None
 
694
        else:
 
695
            newpath_decoded = newpath.decode('utf-8')
 
696
        if not (specific_files is None or
 
697
                (oldpath is not None and
 
698
                    osutils.is_inside_or_parent_of_any(
 
699
                        specific_files, oldpath_decoded)) or
 
700
                (newpath is not None and
 
701
                    osutils.is_inside_or_parent_of_any(
 
702
                        specific_files, newpath_decoded))):
 
703
            continue
 
704
        if mapping.is_special_file(oldpath):
 
705
            oldpath = None
 
706
        if mapping.is_special_file(newpath):
 
707
            newpath = None
 
708
        if oldpath is None and newpath is None:
 
709
            continue
 
710
        if oldpath is None:
 
711
            if newpath in target_extras:
 
712
                ret.unversioned.append(
 
713
                    (osutils.normalized_filename(newpath)[0], None,
 
714
                     mode_kind(newmode)))
 
715
            else:
 
716
                file_id = new_fileid_map.lookup_file_id(newpath_decoded)
 
717
                ret.added.append(
 
718
                    (newpath_decoded, file_id, mode_kind(newmode)))
 
719
        elif newpath is None or newmode == 0:
 
720
            file_id = old_fileid_map.lookup_file_id(oldpath_decoded)
 
721
            ret.removed.append((oldpath_decoded, file_id, mode_kind(oldmode)))
 
722
        elif oldpath != newpath:
 
723
            file_id = old_fileid_map.lookup_file_id(oldpath_decoded)
 
724
            ret.renamed.append(
 
725
                (oldpath_decoded, newpath.decode('utf-8'), file_id,
 
726
                 mode_kind(newmode), (oldsha != newsha),
 
727
                 (oldmode != newmode)))
 
728
        elif mode_kind(oldmode) != mode_kind(newmode):
 
729
            file_id = new_fileid_map.lookup_file_id(newpath_decoded)
 
730
            ret.kind_changed.append(
 
731
                (newpath_decoded, file_id, mode_kind(oldmode),
 
732
                 mode_kind(newmode)))
 
733
        elif oldsha != newsha or oldmode != newmode:
 
734
            if stat.S_ISDIR(oldmode) and stat.S_ISDIR(newmode):
 
735
                continue
 
736
            file_id = new_fileid_map.lookup_file_id(newpath_decoded)
 
737
            ret.modified.append(
 
738
                (newpath_decoded, file_id, mode_kind(newmode),
 
739
                 (oldsha != newsha), (oldmode != newmode)))
 
740
        else:
 
741
            file_id = new_fileid_map.lookup_file_id(newpath_decoded)
 
742
            ret.unchanged.append(
 
743
                (newpath_decoded, file_id, mode_kind(newmode)))
 
744
 
 
745
    return ret
 
746
 
 
747
 
 
748
def changes_from_git_changes(changes, mapping, specific_files=None,
 
749
                             include_unchanged=False, target_extras=None):
 
750
    """Create a iter_changes-like generator from a git stream.
 
751
 
 
752
    source and target are iterators over tuples with:
 
753
        (filename, sha, mode)
 
754
    """
 
755
    if target_extras is None:
 
756
        target_extras = set()
 
757
    for (oldpath, newpath), (oldmode, newmode), (oldsha, newsha) in changes:
 
758
        if oldpath is not None:
 
759
            oldpath_decoded = oldpath.decode('utf-8')
 
760
        else:
 
761
            oldpath_decoded = None
 
762
        if newpath is not None:
 
763
            newpath_decoded = newpath.decode('utf-8')
 
764
        else:
 
765
            newpath_decoded = None
 
766
        if not (specific_files is None or
 
767
                (oldpath_decoded is not None and
 
768
                    osutils.is_inside_or_parent_of_any(
 
769
                        specific_files, oldpath_decoded)) or
 
770
                (newpath_decoded is not None and
 
771
                    osutils.is_inside_or_parent_of_any(
 
772
                        specific_files, newpath_decoded))):
 
773
            continue
 
774
        if oldpath is not None and mapping.is_special_file(oldpath):
 
775
            continue
 
776
        if newpath is not None and mapping.is_special_file(newpath):
 
777
            continue
 
778
        if oldpath_decoded is None:
 
779
            fileid = mapping.generate_file_id(newpath_decoded)
 
780
            oldexe = None
 
781
            oldkind = None
 
782
            oldname = None
 
783
            oldparent = None
 
784
            oldversioned = False
 
785
        else:
 
786
            oldversioned = True
 
787
            if oldmode:
 
788
                oldexe = mode_is_executable(oldmode)
 
789
                oldkind = mode_kind(oldmode)
 
790
            else:
 
791
                oldexe = False
 
792
                oldkind = None
 
793
            if oldpath_decoded == u'':
 
794
                oldparent = None
 
795
                oldname = u''
 
796
            else:
 
797
                (oldparentpath, oldname) = osutils.split(oldpath_decoded)
 
798
                oldparent = mapping.generate_file_id(oldparentpath)
 
799
            fileid = mapping.generate_file_id(oldpath_decoded)
 
800
        if newpath_decoded is None:
 
801
            newexe = None
 
802
            newkind = None
 
803
            newname = None
 
804
            newparent = None
 
805
            newversioned = False
 
806
        else:
 
807
            newversioned = (newpath_decoded not in target_extras)
 
808
            if newmode:
 
809
                newexe = mode_is_executable(newmode)
 
810
                newkind = mode_kind(newmode)
 
811
            else:
 
812
                newexe = False
 
813
                newkind = None
 
814
            if newpath_decoded == u'':
 
815
                newparent = None
 
816
                newname = u''
 
817
            else:
 
818
                newparentpath, newname = osutils.split(newpath_decoded)
 
819
                newparent = mapping.generate_file_id(newparentpath)
 
820
        if (not include_unchanged and
 
821
            oldkind == 'directory' and newkind == 'directory' and
 
822
                oldpath_decoded == newpath_decoded):
 
823
            continue
 
824
        yield (fileid, (oldpath_decoded, newpath_decoded), (oldsha != newsha),
 
825
               (oldversioned, newversioned),
 
826
               (oldparent, newparent), (oldname, newname),
 
827
               (oldkind, newkind), (oldexe, newexe))
 
828
 
 
829
 
 
830
class InterGitTrees(_mod_tree.InterTree):
 
831
    """InterTree that works between two git trees."""
 
832
 
 
833
    _matching_from_tree_format = None
 
834
    _matching_to_tree_format = None
 
835
    _test_mutable_trees_to_test_trees = None
 
836
 
 
837
    @classmethod
 
838
    def is_compatible(cls, source, target):
 
839
        return (isinstance(source, GitRevisionTree) and
 
840
                isinstance(target, GitRevisionTree))
 
841
 
 
842
    def compare(self, want_unchanged=False, specific_files=None,
 
843
                extra_trees=None, require_versioned=False, include_root=False,
 
844
                want_unversioned=False):
 
845
        with self.lock_read():
 
846
            changes, target_extras = self._iter_git_changes(
 
847
                want_unchanged=want_unchanged,
 
848
                require_versioned=require_versioned,
 
849
                specific_files=specific_files,
 
850
                extra_trees=extra_trees,
 
851
                want_unversioned=want_unversioned)
 
852
            source_fileid_map = self.source._fileid_map
 
853
            target_fileid_map = self.target._fileid_map
 
854
            return tree_delta_from_git_changes(
 
855
                changes, self.target.mapping,
 
856
                (source_fileid_map, target_fileid_map),
 
857
                specific_files=specific_files,
 
858
                include_root=include_root, target_extras=target_extras)
 
859
 
 
860
    def iter_changes(self, include_unchanged=False, specific_files=None,
 
861
                     pb=None, extra_trees=[], require_versioned=True,
 
862
                     want_unversioned=False):
 
863
        with self.lock_read():
 
864
            changes, target_extras = self._iter_git_changes(
 
865
                want_unchanged=include_unchanged,
 
866
                require_versioned=require_versioned,
 
867
                specific_files=specific_files,
 
868
                extra_trees=extra_trees,
 
869
                want_unversioned=want_unversioned)
 
870
            return changes_from_git_changes(
 
871
                changes, self.target.mapping,
 
872
                specific_files=specific_files,
 
873
                include_unchanged=include_unchanged,
 
874
                target_extras=target_extras)
 
875
 
 
876
    def _iter_git_changes(self, want_unchanged=False, specific_files=None,
 
877
                          require_versioned=False, extra_trees=None,
 
878
                          want_unversioned=False):
 
879
        raise NotImplementedError(self._iter_git_changes)
 
880
 
 
881
 
 
882
class InterGitRevisionTrees(InterGitTrees):
 
883
    """InterTree that works between two git revision trees."""
 
884
 
 
885
    _matching_from_tree_format = None
 
886
    _matching_to_tree_format = None
 
887
    _test_mutable_trees_to_test_trees = None
 
888
 
 
889
    @classmethod
 
890
    def is_compatible(cls, source, target):
 
891
        return (isinstance(source, GitRevisionTree) and
 
892
                isinstance(target, GitRevisionTree))
 
893
 
 
894
    def _iter_git_changes(self, want_unchanged=False, specific_files=None,
 
895
                          require_versioned=True, extra_trees=None,
 
896
                          want_unversioned=False):
 
897
        trees = [self.source]
 
898
        if extra_trees is not None:
 
899
            trees.extend(extra_trees)
 
900
        if specific_files is not None:
 
901
            specific_files = self.target.find_related_paths_across_trees(
 
902
                specific_files, trees,
 
903
                require_versioned=require_versioned)
 
904
 
 
905
        if (self.source._repository._git.object_store !=
 
906
                self.target._repository._git.object_store):
 
907
            store = OverlayObjectStore(
 
908
                [self.source._repository._git.object_store,
 
909
                    self.target._repository._git.object_store])
 
910
        else:
 
911
            store = self.source._repository._git.object_store
 
912
        return store.tree_changes(
 
913
            self.source.tree, self.target.tree, want_unchanged=want_unchanged,
 
914
            include_trees=True, change_type_same=True), set()
 
915
 
 
916
 
 
917
_mod_tree.InterTree.register_optimiser(InterGitRevisionTrees)
 
918
 
 
919
 
 
920
class MutableGitIndexTree(mutabletree.MutableTree):
 
921
 
 
922
    def __init__(self):
 
923
        self._lock_mode = None
 
924
        self._lock_count = 0
 
925
        self._versioned_dirs = None
 
926
        self._index_dirty = False
 
927
 
 
928
    def is_versioned(self, path):
 
929
        with self.lock_read():
 
930
            path = path.rstrip('/').encode('utf-8')
 
931
            (index, subpath) = self._lookup_index(path)
 
932
            return (subpath in index or self._has_dir(path))
 
933
 
 
934
    def _has_dir(self, path):
 
935
        if not isinstance(path, bytes):
 
936
            raise TypeError(path)
 
937
        if path == b"":
 
938
            return True
 
939
        if self._versioned_dirs is None:
 
940
            self._load_dirs()
 
941
        return path in self._versioned_dirs
 
942
 
 
943
    def _load_dirs(self):
 
944
        if self._lock_mode is None:
 
945
            raise errors.ObjectNotLocked(self)
 
946
        self._versioned_dirs = set()
 
947
        # TODO(jelmer): Browse over all indexes
 
948
        for p, i in self._recurse_index_entries():
 
949
            self._ensure_versioned_dir(posixpath.dirname(p))
 
950
 
 
951
    def _ensure_versioned_dir(self, dirname):
 
952
        if not isinstance(dirname, bytes):
 
953
            raise TypeError(dirname)
 
954
        if dirname in self._versioned_dirs:
 
955
            return
 
956
        if dirname != b"":
 
957
            self._ensure_versioned_dir(posixpath.dirname(dirname))
 
958
        self._versioned_dirs.add(dirname)
 
959
 
 
960
    def path2id(self, path):
 
961
        with self.lock_read():
 
962
            path = path.rstrip('/')
 
963
            if self.is_versioned(path.rstrip('/')):
 
964
                return self._fileid_map.lookup_file_id(
 
965
                    osutils.safe_unicode(path))
 
966
            return None
 
967
 
 
968
    def has_id(self, file_id):
 
969
        try:
 
970
            self.id2path(file_id)
 
971
        except errors.NoSuchId:
 
972
            return False
 
973
        else:
 
974
            return True
 
975
 
 
976
    def id2path(self, file_id):
 
977
        if file_id is None:
 
978
            return ''
 
979
        if type(file_id) is not bytes:
 
980
            raise TypeError(file_id)
 
981
        with self.lock_read():
 
982
            try:
 
983
                path = self._fileid_map.lookup_path(file_id)
 
984
            except ValueError:
 
985
                raise errors.NoSuchId(self, file_id)
 
986
            if self.is_versioned(path):
 
987
                return path
 
988
            raise errors.NoSuchId(self, file_id)
 
989
 
 
990
    def _set_root_id(self, file_id):
 
991
        self._fileid_map.set_file_id("", file_id)
 
992
 
 
993
    def get_root_id(self):
 
994
        return self.path2id(u"")
 
995
 
 
996
    def _add(self, files, ids, kinds):
 
997
        for (path, file_id, kind) in zip(files, ids, kinds):
 
998
            if file_id is not None:
 
999
                raise workingtree.SettingFileIdUnsupported()
 
1000
            path, can_access = osutils.normalized_filename(path)
 
1001
            if not can_access:
 
1002
                raise errors.InvalidNormalization(path)
 
1003
            self._index_add_entry(path, kind)
 
1004
 
 
1005
    def _read_submodule_head(self, path):
 
1006
        raise NotImplementedError(self._read_submodule_head)
 
1007
 
 
1008
    def _lookup_index(self, encoded_path):
 
1009
        if not isinstance(encoded_path, bytes):
 
1010
            raise TypeError(encoded_path)
 
1011
        # TODO(jelmer): Look in other indexes
 
1012
        return self.index, encoded_path
 
1013
 
 
1014
    def _index_del_entry(self, index, path):
 
1015
        del index[path]
 
1016
        # TODO(jelmer): Keep track of dirty per index
 
1017
        self._index_dirty = True
 
1018
 
 
1019
    def _index_add_entry(self, path, kind, flags=0, reference_revision=None):
 
1020
        if kind == "directory":
 
1021
            # Git indexes don't contain directories
 
1022
            return
 
1023
        if kind == "file":
 
1024
            blob = Blob()
 
1025
            try:
 
1026
                file, stat_val = self.get_file_with_stat(path)
 
1027
            except (errors.NoSuchFile, IOError):
 
1028
                # TODO: Rather than come up with something here, use the old
 
1029
                # index
 
1030
                file = BytesIO()
 
1031
                stat_val = os.stat_result(
 
1032
                    (stat.S_IFREG | 0o644, 0, 0, 0, 0, 0, 0, 0, 0, 0))
 
1033
            with file:
 
1034
                blob.set_raw_string(file.read())
 
1035
            # Add object to the repository if it didn't exist yet
 
1036
            if blob.id not in self.store:
 
1037
                self.store.add_object(blob)
 
1038
            hexsha = blob.id
 
1039
        elif kind == "symlink":
 
1040
            blob = Blob()
 
1041
            try:
 
1042
                stat_val = self._lstat(path)
 
1043
            except EnvironmentError:
 
1044
                # TODO: Rather than come up with something here, use the
 
1045
                # old index
 
1046
                stat_val = os.stat_result(
 
1047
                    (stat.S_IFLNK, 0, 0, 0, 0, 0, 0, 0, 0, 0))
 
1048
            blob.set_raw_string(
 
1049
                self.get_symlink_target(path).encode("utf-8"))
 
1050
            # Add object to the repository if it didn't exist yet
 
1051
            if blob.id not in self.store:
 
1052
                self.store.add_object(blob)
 
1053
            hexsha = blob.id
 
1054
        elif kind == "tree-reference":
 
1055
            if reference_revision is not None:
 
1056
                hexsha = self.branch.lookup_bzr_revision_id(
 
1057
                    reference_revision)[0]
 
1058
            else:
 
1059
                hexsha = self._read_submodule_head(path)
 
1060
                if hexsha is None:
 
1061
                    raise errors.NoCommits(path)
 
1062
            try:
 
1063
                stat_val = self._lstat(path)
 
1064
            except EnvironmentError:
 
1065
                stat_val = os.stat_result(
 
1066
                    (S_IFGITLINK, 0, 0, 0, 0, 0, 0, 0, 0, 0))
 
1067
            stat_val = os.stat_result((S_IFGITLINK, ) + stat_val[1:])
 
1068
        else:
 
1069
            raise AssertionError("unknown kind '%s'" % kind)
 
1070
        # Add an entry to the index or update the existing entry
 
1071
        ensure_normalized_path(path)
 
1072
        encoded_path = path.encode("utf-8")
 
1073
        if b'\r' in encoded_path or b'\n' in encoded_path:
 
1074
            # TODO(jelmer): Why do we need to do this?
 
1075
            trace.mutter('ignoring path with invalid newline in it: %r', path)
 
1076
            return
 
1077
        (index, index_path) = self._lookup_index(encoded_path)
 
1078
        index[index_path] = index_entry_from_stat(stat_val, hexsha, flags)
 
1079
        self._index_dirty = True
 
1080
        if self._versioned_dirs is not None:
 
1081
            self._ensure_versioned_dir(index_path)
 
1082
 
 
1083
    def _recurse_index_entries(self, index=None, basepath=b""):
 
1084
        # Iterate over all index entries
 
1085
        with self.lock_read():
 
1086
            if index is None:
 
1087
                index = self.index
 
1088
            for path, value in index.items():
 
1089
                yield (posixpath.join(basepath, path), value)
 
1090
                (ctime, mtime, dev, ino, mode, uid, gid, size, sha,
 
1091
                 flags) = value
 
1092
                if S_ISGITLINK(mode):
 
1093
                    pass  # TODO(jelmer): dive into submodule
 
1094
 
 
1095
    def iter_entries_by_dir(self, specific_files=None, yield_parents=False):
 
1096
        if yield_parents:
 
1097
            raise NotImplementedError(self.iter_entries_by_dir)
 
1098
        with self.lock_read():
 
1099
            if specific_files is not None:
 
1100
                specific_files = set(specific_files)
 
1101
            else:
 
1102
                specific_files = None
 
1103
            root_ie = self._get_dir_ie(u"", None)
 
1104
            ret = {}
 
1105
            if specific_files is None or u"" in specific_files:
 
1106
                ret[(u"", u"")] = root_ie
 
1107
            dir_ids = {u"": root_ie.file_id}
 
1108
            for path, value in self._recurse_index_entries():
 
1109
                if self.mapping.is_special_file(path):
 
1110
                    continue
 
1111
                path = path.decode("utf-8")
 
1112
                if specific_files is not None and path not in specific_files:
 
1113
                    continue
 
1114
                (parent, name) = posixpath.split(path)
 
1115
                try:
 
1116
                    file_ie = self._get_file_ie(name, path, value, None)
 
1117
                except errors.NoSuchFile:
 
1118
                    continue
 
1119
                if yield_parents or specific_files is None:
 
1120
                    for (dir_path, dir_ie) in self._add_missing_parent_ids(
 
1121
                            parent, dir_ids):
 
1122
                        ret[(posixpath.dirname(dir_path), dir_path)] = dir_ie
 
1123
                file_ie.parent_id = self.path2id(parent)
 
1124
                ret[(posixpath.dirname(path), path)] = file_ie
 
1125
            return ((path, ie) for ((_, path), ie) in sorted(viewitems(ret)))
 
1126
 
 
1127
    def iter_references(self):
 
1128
        # TODO(jelmer): Implement a more efficient version of this
 
1129
        for path, entry in self.iter_entries_by_dir():
 
1130
            if entry.kind == 'tree-reference':
 
1131
                yield path, self.mapping.generate_file_id(b'')
 
1132
 
 
1133
    def _get_dir_ie(self, path, parent_id):
 
1134
        file_id = self.path2id(path)
 
1135
        return GitTreeDirectory(file_id,
 
1136
                                posixpath.basename(path).strip("/"), parent_id)
 
1137
 
 
1138
    def _get_file_ie(self, name, path, value, parent_id):
 
1139
        if not isinstance(name, text_type):
 
1140
            raise TypeError(name)
 
1141
        if not isinstance(path, text_type):
 
1142
            raise TypeError(path)
 
1143
        if not isinstance(value, tuple) or len(value) != 10:
 
1144
            raise TypeError(value)
 
1145
        (ctime, mtime, dev, ino, mode, uid, gid, size, sha, flags) = value
 
1146
        file_id = self.path2id(path)
 
1147
        if not isinstance(file_id, bytes):
 
1148
            raise TypeError(file_id)
 
1149
        kind = mode_kind(mode)
 
1150
        ie = entry_factory[kind](file_id, name, parent_id)
 
1151
        if kind == 'symlink':
 
1152
            ie.symlink_target = self.get_symlink_target(path, file_id)
 
1153
        elif kind == 'tree-reference':
 
1154
            ie.reference_revision = self.get_reference_revision(path, file_id)
 
1155
        else:
 
1156
            try:
 
1157
                data = self.get_file_text(path, file_id)
 
1158
            except errors.NoSuchFile:
 
1159
                data = None
 
1160
            except IOError as e:
 
1161
                if e.errno != errno.ENOENT:
 
1162
                    raise
 
1163
                data = None
 
1164
            if data is None:
 
1165
                data = self.branch.repository._git.object_store[sha].data
 
1166
            ie.text_sha1 = osutils.sha_string(data)
 
1167
            ie.text_size = len(data)
 
1168
            ie.executable = bool(stat.S_ISREG(mode) and stat.S_IEXEC & mode)
 
1169
        return ie
 
1170
 
 
1171
    def _add_missing_parent_ids(self, path, dir_ids):
 
1172
        if path in dir_ids:
 
1173
            return []
 
1174
        parent = posixpath.dirname(path).strip("/")
 
1175
        ret = self._add_missing_parent_ids(parent, dir_ids)
 
1176
        parent_id = dir_ids[parent]
 
1177
        ie = self._get_dir_ie(path, parent_id)
 
1178
        dir_ids[path] = ie.file_id
 
1179
        ret.append((path, ie))
 
1180
        return ret
 
1181
 
 
1182
    def _comparison_data(self, entry, path):
 
1183
        if entry is None:
 
1184
            return None, False, None
 
1185
        return entry.kind, entry.executable, None
 
1186
 
 
1187
    def _unversion_path(self, path):
 
1188
        if self._lock_mode is None:
 
1189
            raise errors.ObjectNotLocked(self)
 
1190
        encoded_path = path.encode("utf-8")
 
1191
        count = 0
 
1192
        (index, subpath) = self._lookup_index(encoded_path)
 
1193
        try:
 
1194
            self._index_del_entry(index, encoded_path)
 
1195
        except KeyError:
 
1196
            # A directory, perhaps?
 
1197
            # TODO(jelmer): Deletes that involve submodules?
 
1198
            for p in list(index):
 
1199
                if p.startswith(subpath + b"/"):
 
1200
                    count += 1
 
1201
                    self._index_del_entry(index, p)
 
1202
        else:
 
1203
            count = 1
 
1204
        self._versioned_dirs = None
 
1205
        return count
 
1206
 
 
1207
    def unversion(self, paths, file_ids=None):
 
1208
        with self.lock_tree_write():
 
1209
            for path in paths:
 
1210
                if self._unversion_path(path) == 0:
 
1211
                    raise errors.NoSuchFile(path)
 
1212
            self._versioned_dirs = None
 
1213
            self.flush()
 
1214
 
 
1215
    def flush(self):
 
1216
        pass
 
1217
 
 
1218
    def update_basis_by_delta(self, revid, delta):
 
1219
        # TODO(jelmer): This shouldn't be called, it's inventory specific.
 
1220
        for (old_path, new_path, file_id, ie) in delta:
 
1221
            if old_path is not None:
 
1222
                (index, old_subpath) = self._lookup_index(
 
1223
                    old_path.encode('utf-8'))
 
1224
                if old_subpath in index:
 
1225
                    self._index_del_entry(index, old_subpath)
 
1226
                    self._versioned_dirs = None
 
1227
            if new_path is not None and ie.kind != 'directory':
 
1228
                self._index_add_entry(new_path, ie.kind)
 
1229
        self.flush()
 
1230
        self._set_merges_from_parent_ids([])
 
1231
 
 
1232
    def move(self, from_paths, to_dir=None, after=None):
 
1233
        rename_tuples = []
 
1234
        with self.lock_tree_write():
 
1235
            to_abs = self.abspath(to_dir)
 
1236
            if not os.path.isdir(to_abs):
 
1237
                raise errors.BzrMoveFailedError('', to_dir,
 
1238
                                                errors.NotADirectory(to_abs))
 
1239
 
 
1240
            for from_rel in from_paths:
 
1241
                from_tail = os.path.split(from_rel)[-1]
 
1242
                to_rel = os.path.join(to_dir, from_tail)
 
1243
                self.rename_one(from_rel, to_rel, after=after)
 
1244
                rename_tuples.append((from_rel, to_rel))
 
1245
            self.flush()
 
1246
            return rename_tuples
 
1247
 
 
1248
    def rename_one(self, from_rel, to_rel, after=None):
 
1249
        from_path = from_rel.encode("utf-8")
 
1250
        to_rel, can_access = osutils.normalized_filename(to_rel)
 
1251
        if not can_access:
 
1252
            raise errors.InvalidNormalization(to_rel)
 
1253
        to_path = to_rel.encode("utf-8")
 
1254
        with self.lock_tree_write():
 
1255
            if not after:
 
1256
                # Perhaps it's already moved?
 
1257
                after = (
 
1258
                    not self.has_filename(from_rel) and
 
1259
                    self.has_filename(to_rel) and
 
1260
                    not self.is_versioned(to_rel))
 
1261
            if after:
 
1262
                if not self.has_filename(to_rel):
 
1263
                    raise errors.BzrMoveFailedError(
 
1264
                        from_rel, to_rel, errors.NoSuchFile(to_rel))
 
1265
                if self.basis_tree().is_versioned(to_rel):
 
1266
                    raise errors.BzrMoveFailedError(
 
1267
                        from_rel, to_rel, errors.AlreadyVersionedError(to_rel))
 
1268
 
 
1269
                kind = self.kind(to_rel)
 
1270
            else:
 
1271
                try:
 
1272
                    to_kind = self.kind(to_rel)
 
1273
                except errors.NoSuchFile:
 
1274
                    exc_type = errors.BzrRenameFailedError
 
1275
                    to_kind = None
 
1276
                else:
 
1277
                    exc_type = errors.BzrMoveFailedError
 
1278
                if self.is_versioned(to_rel):
 
1279
                    raise exc_type(from_rel, to_rel,
 
1280
                                   errors.AlreadyVersionedError(to_rel))
 
1281
                if not self.has_filename(from_rel):
 
1282
                    raise errors.BzrMoveFailedError(
 
1283
                        from_rel, to_rel, errors.NoSuchFile(from_rel))
 
1284
                kind = self.kind(from_rel)
 
1285
                if not self.is_versioned(from_rel) and kind != 'directory':
 
1286
                    raise exc_type(from_rel, to_rel,
 
1287
                                   errors.NotVersionedError(from_rel))
 
1288
                if self.has_filename(to_rel):
 
1289
                    raise errors.RenameFailedFilesExist(
 
1290
                        from_rel, to_rel, errors.FileExists(to_rel))
 
1291
 
 
1292
                kind = self.kind(from_rel)
 
1293
 
 
1294
            if not after and kind != 'directory':
 
1295
                (index, from_subpath) = self._lookup_index(from_path)
 
1296
                if from_subpath not in index:
 
1297
                    # It's not a file
 
1298
                    raise errors.BzrMoveFailedError(
 
1299
                        from_rel, to_rel,
 
1300
                        errors.NotVersionedError(path=from_rel))
 
1301
 
 
1302
            if not after:
 
1303
                try:
 
1304
                    self._rename_one(from_rel, to_rel)
 
1305
                except OSError as e:
 
1306
                    if e.errno == errno.ENOENT:
 
1307
                        raise errors.BzrMoveFailedError(
 
1308
                            from_rel, to_rel, errors.NoSuchFile(to_rel))
 
1309
                    raise
 
1310
            if kind != 'directory':
 
1311
                (index, from_index_path) = self._lookup_index(from_path)
 
1312
                try:
 
1313
                    self._index_del_entry(index, from_path)
 
1314
                except KeyError:
 
1315
                    pass
 
1316
                self._index_add_entry(to_rel, kind)
 
1317
            else:
 
1318
                todo = [(p, i) for (p, i) in self._recurse_index_entries()
 
1319
                        if p.startswith(from_path + b'/')]
 
1320
                for child_path, child_value in todo:
 
1321
                    (child_to_index, child_to_index_path) = self._lookup_index(
 
1322
                        posixpath.join(to_path, posixpath.relpath(child_path, from_path)))
 
1323
                    child_to_index[child_to_index_path] = child_value
 
1324
                    # TODO(jelmer): Mark individual index as dirty
 
1325
                    self._index_dirty = True
 
1326
                    (child_from_index, child_from_index_path) = self._lookup_index(
 
1327
                        child_path)
 
1328
                    self._index_del_entry(
 
1329
                        child_from_index, child_from_index_path)
 
1330
 
 
1331
            self._versioned_dirs = None
 
1332
            self.flush()
 
1333
 
 
1334
    def find_related_paths_across_trees(self, paths, trees=[],
 
1335
                                        require_versioned=True):
 
1336
        if paths is None:
 
1337
            return None
 
1338
 
 
1339
        if require_versioned:
 
1340
            trees = [self] + (trees if trees is not None else [])
 
1341
            unversioned = set()
 
1342
            for p in paths:
 
1343
                for t in trees:
 
1344
                    if t.is_versioned(p):
 
1345
                        break
 
1346
                else:
 
1347
                    unversioned.add(p)
 
1348
            if unversioned:
 
1349
                raise errors.PathsNotVersionedError(unversioned)
 
1350
 
 
1351
        return filter(self.is_versioned, paths)
 
1352
 
 
1353
    def path_content_summary(self, path):
 
1354
        """See Tree.path_content_summary."""
 
1355
        try:
 
1356
            stat_result = self._lstat(path)
 
1357
        except OSError as e:
 
1358
            if getattr(e, 'errno', None) == errno.ENOENT:
 
1359
                # no file.
 
1360
                return ('missing', None, None, None)
 
1361
            # propagate other errors
 
1362
            raise
 
1363
        kind = mode_kind(stat_result.st_mode)
 
1364
        if kind == 'file':
 
1365
            return self._file_content_summary(path, stat_result)
 
1366
        elif kind == 'directory':
 
1367
            # perhaps it looks like a plain directory, but it's really a
 
1368
            # reference.
 
1369
            if self._directory_is_tree_reference(path):
 
1370
                kind = 'tree-reference'
 
1371
            return kind, None, None, None
 
1372
        elif kind == 'symlink':
 
1373
            target = osutils.readlink(self.abspath(path))
 
1374
            return ('symlink', None, None, target)
 
1375
        else:
 
1376
            return (kind, None, None, None)
 
1377
 
 
1378
    def kind(self, relpath, file_id=None):
 
1379
        kind = osutils.file_kind(self.abspath(relpath))
 
1380
        if kind == 'directory':
 
1381
            (index, index_path) = self._lookup_index(relpath.encode('utf-8'))
 
1382
            if index is None:
 
1383
                return kind
 
1384
            try:
 
1385
                mode = index[index_path].mode
 
1386
            except KeyError:
 
1387
                return kind
 
1388
            else:
 
1389
                if S_ISGITLINK(mode):
 
1390
                    return 'tree-reference'
 
1391
                return 'directory'
 
1392
        else:
 
1393
            return kind
 
1394
 
 
1395
    def _live_entry(self, relpath):
 
1396
        raise NotImplementedError(self._live_entry)
 
1397
 
 
1398
 
 
1399
class InterIndexGitTree(InterGitTrees):
 
1400
    """InterTree that works between a Git revision tree and an index."""
 
1401
 
 
1402
    def __init__(self, source, target):
 
1403
        super(InterIndexGitTree, self).__init__(source, target)
 
1404
        self._index = target.index
 
1405
 
 
1406
    @classmethod
 
1407
    def is_compatible(cls, source, target):
 
1408
        return (isinstance(source, GitRevisionTree) and
 
1409
                isinstance(target, MutableGitIndexTree))
 
1410
 
 
1411
    def _iter_git_changes(self, want_unchanged=False, specific_files=None,
 
1412
                          require_versioned=False, extra_trees=None,
 
1413
                          want_unversioned=False):
 
1414
        trees = [self.source]
 
1415
        if extra_trees is not None:
 
1416
            trees.extend(extra_trees)
 
1417
        if specific_files is not None:
 
1418
            specific_files = self.target.find_related_paths_across_trees(
 
1419
                specific_files, trees,
 
1420
                require_versioned=require_versioned)
 
1421
        # TODO(jelmer): Restrict to specific_files, for performance reasons.
 
1422
        with self.lock_read():
 
1423
            return changes_between_git_tree_and_working_copy(
 
1424
                self.source.store, self.source.tree,
 
1425
                self.target, want_unchanged=want_unchanged,
 
1426
                want_unversioned=want_unversioned)
 
1427
 
 
1428
 
 
1429
_mod_tree.InterTree.register_optimiser(InterIndexGitTree)
 
1430
 
 
1431
 
 
1432
def changes_between_git_tree_and_working_copy(store, from_tree_sha, target,
 
1433
                                              want_unchanged=False,
 
1434
                                              want_unversioned=False):
 
1435
    """Determine the changes between a git tree and a working tree with index.
 
1436
 
 
1437
    """
 
1438
    extras = set()
 
1439
    blobs = {}
 
1440
    # Report dirified directories to commit_tree first, so that they can be
 
1441
    # replaced with non-empty directories if they have contents.
 
1442
    dirified = []
 
1443
    for path, index_entry in target._recurse_index_entries():
 
1444
        try:
 
1445
            live_entry = target._live_entry(path)
 
1446
        except EnvironmentError as e:
 
1447
            if e.errno == errno.ENOENT:
 
1448
                # Entry was removed; keep it listed, but mark it as gone.
 
1449
                blobs[path] = (ZERO_SHA, 0)
 
1450
            elif e.errno == errno.EISDIR:
 
1451
                # Entry was turned into a directory
 
1452
                dirified.append((path, Tree().id, stat.S_IFDIR))
 
1453
                store.add_object(Tree())
 
1454
            else:
 
1455
                raise
 
1456
        else:
 
1457
            blobs[path] = (live_entry.sha, cleanup_mode(live_entry.mode))
 
1458
    if want_unversioned:
 
1459
        for e in target.extras():
 
1460
            st = target._lstat(e)
 
1461
            try:
 
1462
                np, accessible = osutils.normalized_filename(e)
 
1463
            except UnicodeDecodeError:
 
1464
                raise errors.BadFilenameEncoding(
 
1465
                    e, osutils._fs_enc)
 
1466
            if stat.S_ISDIR(st.st_mode):
 
1467
                blob = Tree()
 
1468
            else:
 
1469
                blob = blob_from_path_and_stat(
 
1470
                    target.abspath(e).encode(osutils._fs_enc), st)
 
1471
            store.add_object(blob)
 
1472
            np = np.encode('utf-8')
 
1473
            blobs[np] = (blob.id, cleanup_mode(st.st_mode))
 
1474
            extras.add(np)
 
1475
    to_tree_sha = commit_tree(
 
1476
        store, dirified + [(p, s, m) for (p, (s, m)) in blobs.items()])
 
1477
    return store.tree_changes(
 
1478
        from_tree_sha, to_tree_sha, include_trees=True,
 
1479
        want_unchanged=want_unchanged, change_type_same=True), extras