/brz/remove-bazaar

To get this branch, use:
bzr branch http://gegoxaren.bato24.eu/bzr/brz/remove-bazaar

« back to all changes in this revision

Viewing changes to breezy/git/tree.py

  • Committer: Jelmer Vernooij
  • Date: 2020-07-18 23:14:00 UTC
  • mfrom: (7490.40.62 work)
  • mto: This revision was merged to the branch mainline in revision 7519.
  • Revision ID: jelmer@jelmer.uk-20200718231400-jaes9qltn8oi8xss
Merge lp:brz/3.1.

Show diffs side-by-side

added added

removed removed

Lines of Context:
breezy/git/tree.py
1
 
# Copyright (C) 2009 Jelmer Vernooij <jelmer@samba.org>
 
1
# Copyright (C) 2009-2018 Jelmer Vernooij <jelmer@jelmer.uk>
2
2
#
3
3
# This program is free software; you can redistribute it and/or modify
4
4
# it under the terms of the GNU General Public License as published by
12
12
#
13
13
# You should have received a copy of the GNU General Public License
14
14
# along with this program; if not, write to the Free Software
15
 
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
15
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
16
16
 
17
17
 
18
18
"""Git Trees."""
19
19
 
20
 
from bzrlib import (
 
20
from collections import deque
 
21
import errno
 
22
from io import BytesIO
 
23
import os
 
24
 
 
25
from dulwich.config import (
 
26
    parse_submodules,
 
27
    ConfigFile as GitConfigFile,
 
28
    )
 
29
from dulwich.diff_tree import tree_changes, RenameDetector
 
30
from dulwich.errors import NotTreeError
 
31
from dulwich.index import (
 
32
    blob_from_path_and_stat,
 
33
    cleanup_mode,
 
34
    commit_tree,
 
35
    index_entry_from_stat,
 
36
    Index,
 
37
    )
 
38
from dulwich.object_store import (
 
39
    tree_lookup_path,
 
40
    OverlayObjectStore,
 
41
    )
 
42
from dulwich.objects import (
 
43
    Blob,
 
44
    Tree,
 
45
    ZERO_SHA,
 
46
    S_IFGITLINK,
 
47
    S_ISGITLINK,
 
48
    )
 
49
import stat
 
50
import posixpath
 
51
 
 
52
from .. import (
 
53
    controldir as _mod_controldir,
21
54
    delta,
22
55
    errors,
 
56
    mutabletree,
 
57
    osutils,
23
58
    revisiontree,
24
 
    tree,
 
59
    trace,
 
60
    tree as _mod_tree,
 
61
    workingtree,
 
62
    )
 
63
from ..revision import (
 
64
    CURRENT_REVISION,
 
65
    NULL_REVISION,
25
66
    )
26
67
 
27
 
from bzrlib.plugins.git.inventory import (
28
 
    GitInventory,
29
 
    )
30
 
from bzrlib.plugins.git.mapping import (
 
68
from .mapping import (
 
69
    encode_git_path,
 
70
    decode_git_path,
31
71
    mode_is_executable,
32
72
    mode_kind,
33
 
    )
 
73
    default_mapping,
 
74
    )
 
75
from .transportgit import (
 
76
    TransportObjectStore,
 
77
    TransportRepo,
 
78
    )
 
79
 
 
80
 
 
81
class GitTreeDirectory(_mod_tree.TreeDirectory):
 
82
 
 
83
    __slots__ = ['file_id', 'name', 'parent_id', 'children']
 
84
 
 
85
    def __init__(self, file_id, name, parent_id):
 
86
        self.file_id = file_id
 
87
        self.name = name
 
88
        self.parent_id = parent_id
 
89
        # TODO(jelmer)
 
90
        self.children = {}
 
91
 
 
92
    @property
 
93
    def kind(self):
 
94
        return 'directory'
 
95
 
 
96
    @property
 
97
    def executable(self):
 
98
        return False
 
99
 
 
100
    def copy(self):
 
101
        return self.__class__(
 
102
            self.file_id, self.name, self.parent_id)
 
103
 
 
104
    def __repr__(self):
 
105
        return "%s(file_id=%r, name=%r, parent_id=%r)" % (
 
106
            self.__class__.__name__, self.file_id, self.name,
 
107
            self.parent_id)
 
108
 
 
109
    def __eq__(self, other):
 
110
        return (self.kind == other.kind and
 
111
                self.file_id == other.file_id and
 
112
                self.name == other.name and
 
113
                self.parent_id == other.parent_id)
 
114
 
 
115
 
 
116
class GitTreeFile(_mod_tree.TreeFile):
 
117
 
 
118
    __slots__ = ['file_id', 'name', 'parent_id', 'text_size', 'text_sha1',
 
119
                 'executable']
 
120
 
 
121
    def __init__(self, file_id, name, parent_id, text_size=None,
 
122
                 text_sha1=None, executable=None):
 
123
        self.file_id = file_id
 
124
        self.name = name
 
125
        self.parent_id = parent_id
 
126
        self.text_size = text_size
 
127
        self.text_sha1 = text_sha1
 
128
        self.executable = executable
 
129
 
 
130
    @property
 
131
    def kind(self):
 
132
        return 'file'
 
133
 
 
134
    def __eq__(self, other):
 
135
        return (self.kind == other.kind and
 
136
                self.file_id == other.file_id and
 
137
                self.name == other.name and
 
138
                self.parent_id == other.parent_id and
 
139
                self.text_sha1 == other.text_sha1 and
 
140
                self.text_size == other.text_size and
 
141
                self.executable == other.executable)
 
142
 
 
143
    def __repr__(self):
 
144
        return ("%s(file_id=%r, name=%r, parent_id=%r, text_size=%r, "
 
145
                "text_sha1=%r, executable=%r)") % (
 
146
            type(self).__name__, self.file_id, self.name, self.parent_id,
 
147
            self.text_size, self.text_sha1, self.executable)
 
148
 
 
149
    def copy(self):
 
150
        ret = self.__class__(
 
151
            self.file_id, self.name, self.parent_id)
 
152
        ret.text_sha1 = self.text_sha1
 
153
        ret.text_size = self.text_size
 
154
        ret.executable = self.executable
 
155
        return ret
 
156
 
 
157
 
 
158
class GitTreeSymlink(_mod_tree.TreeLink):
 
159
 
 
160
    __slots__ = ['file_id', 'name', 'parent_id', 'symlink_target']
 
161
 
 
162
    def __init__(self, file_id, name, parent_id,
 
163
                 symlink_target=None):
 
164
        self.file_id = file_id
 
165
        self.name = name
 
166
        self.parent_id = parent_id
 
167
        self.symlink_target = symlink_target
 
168
 
 
169
    @property
 
170
    def kind(self):
 
171
        return 'symlink'
 
172
 
 
173
    @property
 
174
    def executable(self):
 
175
        return False
 
176
 
 
177
    @property
 
178
    def text_size(self):
 
179
        return None
 
180
 
 
181
    def __repr__(self):
 
182
        return "%s(file_id=%r, name=%r, parent_id=%r, symlink_target=%r)" % (
 
183
            type(self).__name__, self.file_id, self.name, self.parent_id,
 
184
            self.symlink_target)
 
185
 
 
186
    def __eq__(self, other):
 
187
        return (self.kind == other.kind and
 
188
                self.file_id == other.file_id and
 
189
                self.name == other.name and
 
190
                self.parent_id == other.parent_id and
 
191
                self.symlink_target == other.symlink_target)
 
192
 
 
193
    def copy(self):
 
194
        return self.__class__(
 
195
            self.file_id, self.name, self.parent_id,
 
196
            self.symlink_target)
 
197
 
 
198
 
 
199
class GitTreeSubmodule(_mod_tree.TreeReference):
 
200
 
 
201
    __slots__ = ['file_id', 'name', 'parent_id', 'reference_revision']
 
202
 
 
203
    def __init__(self, file_id, name, parent_id, reference_revision=None):
 
204
        self.file_id = file_id
 
205
        self.name = name
 
206
        self.parent_id = parent_id
 
207
        self.reference_revision = reference_revision
 
208
 
 
209
    @property
 
210
    def executable(self):
 
211
        return False
 
212
 
 
213
    @property
 
214
    def kind(self):
 
215
        return 'tree-reference'
 
216
 
 
217
    def __repr__(self):
 
218
        return ("%s(file_id=%r, name=%r, parent_id=%r, "
 
219
                "reference_revision=%r)") % (
 
220
            type(self).__name__, self.file_id, self.name, self.parent_id,
 
221
            self.reference_revision)
 
222
 
 
223
    def __eq__(self, other):
 
224
        return (self.kind == other.kind and
 
225
                self.file_id == other.file_id and
 
226
                self.name == other.name and
 
227
                self.parent_id == other.parent_id and
 
228
                self.reference_revision == other.reference_revision)
 
229
 
 
230
    def copy(self):
 
231
        return self.__class__(
 
232
            self.file_id, self.name, self.parent_id,
 
233
            self.reference_revision)
 
234
 
 
235
 
 
236
entry_factory = {
 
237
    'directory': GitTreeDirectory,
 
238
    'file': GitTreeFile,
 
239
    'symlink': GitTreeSymlink,
 
240
    'tree-reference': GitTreeSubmodule,
 
241
    }
 
242
 
 
243
 
 
244
def ensure_normalized_path(path):
 
245
    """Check whether path is normalized.
 
246
 
 
247
    :raises InvalidNormalization: When path is not normalized, and cannot be
 
248
        accessed on this platform by the normalized path.
 
249
    :return: The NFC normalised version of path.
 
250
    """
 
251
    norm_path, can_access = osutils.normalized_filename(path)
 
252
    if norm_path != path:
 
253
        if can_access:
 
254
            return norm_path
 
255
        else:
 
256
            raise errors.InvalidNormalization(path)
 
257
    return path
34
258
 
35
259
 
36
260
class GitRevisionTree(revisiontree.RevisionTree):
39
263
    def __init__(self, repository, revision_id):
40
264
        self._revision_id = revision_id
41
265
        self._repository = repository
42
 
        store = repository._git.object_store
43
 
        assert isinstance(revision_id, str)
44
 
        git_id, self.mapping = repository.lookup_bzr_revision_id(revision_id)
45
 
        try:
46
 
            commit = store[git_id]
47
 
        except KeyError, r:
48
 
            raise errors.NoSuchRevision(repository, revision_id)
49
 
        self.tree = commit.tree
50
 
        fileid_map = self.mapping.get_fileid_map(store.__getitem__, self.tree)
51
 
        self._inventory = GitInventory(self.tree, self.mapping, fileid_map,
52
 
            store, revision_id)
 
266
        self._submodules = None
 
267
        self.store = repository._git.object_store
 
268
        if not isinstance(revision_id, bytes):
 
269
            raise TypeError(revision_id)
 
270
        self.commit_id, self.mapping = repository.lookup_bzr_revision_id(
 
271
            revision_id)
 
272
        if revision_id == NULL_REVISION:
 
273
            self.tree = None
 
274
            self.mapping = default_mapping
 
275
        else:
 
276
            try:
 
277
                commit = self.store[self.commit_id]
 
278
            except KeyError:
 
279
                raise errors.NoSuchRevision(repository, revision_id)
 
280
            self.tree = commit.tree
 
281
 
 
282
    def _submodule_info(self):
 
283
        if self._submodules is None:
 
284
            try:
 
285
                with self.get_file('.gitmodules') as f:
 
286
                    config = GitConfigFile.from_file(f)
 
287
                    self._submodules = {
 
288
                        path: (url, section)
 
289
                        for path, url, section in parse_submodules(config)}
 
290
            except errors.NoSuchFile:
 
291
                self._submodules = {}
 
292
        return self._submodules
 
293
 
 
294
    def _get_submodule_repository(self, relpath):
 
295
        if not isinstance(relpath, bytes):
 
296
            raise TypeError(relpath)
 
297
        try:
 
298
            info = self._submodule_info()[relpath]
 
299
        except KeyError:
 
300
            nested_repo_transport = self._repository.controldir.user_transport.clone(
 
301
                decode_git_path(relpath))
 
302
        else:
 
303
            nested_repo_transport = self._repository.controldir.control_transport.clone(
 
304
                posixpath.join('modules', decode_git_path(info[1])))
 
305
        nested_controldir = _mod_controldir.ControlDir.open_from_transport(
 
306
            nested_repo_transport)
 
307
        return nested_controldir.find_repository()
 
308
 
 
309
    def _get_submodule_store(self, relpath):
 
310
        return self._get_submodule_repository(relpath)._git.object_store
 
311
 
 
312
    def get_nested_tree(self, path):
 
313
        encoded_path = encode_git_path(path)
 
314
        nested_repo = self._get_submodule_repository(encoded_path)
 
315
        ref_rev = self.get_reference_revision(path)
 
316
        return nested_repo.revision_tree(ref_rev)
 
317
 
 
318
    def supports_rename_tracking(self):
 
319
        return False
 
320
 
 
321
    def get_file_revision(self, path):
 
322
        change_scanner = self._repository._file_change_scanner
 
323
        if self.commit_id == ZERO_SHA:
 
324
            return NULL_REVISION
 
325
        (unused_path, commit_id) = change_scanner.find_last_change_revision(
 
326
            encode_git_path(path), self.commit_id)
 
327
        return self._repository.lookup_foreign_revision_id(
 
328
            commit_id, self.mapping)
 
329
 
 
330
    def get_file_mtime(self, path):
 
331
        try:
 
332
            revid = self.get_file_revision(path)
 
333
        except KeyError:
 
334
            raise errors.NoSuchFile(path)
 
335
        try:
 
336
            rev = self._repository.get_revision(revid)
 
337
        except errors.NoSuchRevision:
 
338
            raise _mod_tree.FileTimestampUnavailable(path)
 
339
        return rev.timestamp
 
340
 
 
341
    def id2path(self, file_id, recurse='down'):
 
342
        try:
 
343
            path = self.mapping.parse_file_id(file_id)
 
344
        except ValueError:
 
345
            raise errors.NoSuchId(self, file_id)
 
346
        if self.is_versioned(path):
 
347
            return path
 
348
        raise errors.NoSuchId(self, file_id)
 
349
 
 
350
    def is_versioned(self, path):
 
351
        return self.has_filename(path)
 
352
 
 
353
    def path2id(self, path):
 
354
        if self.mapping.is_special_file(path):
 
355
            return None
 
356
        if not self.is_versioned(path):
 
357
            return None
 
358
        return self.mapping.generate_file_id(osutils.safe_unicode(path))
 
359
 
 
360
    def all_file_ids(self):
 
361
        raise errors.UnsupportedOperation(self.all_file_ids, self)
 
362
 
 
363
    def all_versioned_paths(self):
 
364
        ret = {u''}
 
365
        todo = [(self.store, b'', self.tree)]
 
366
        while todo:
 
367
            (store, path, tree_id) = todo.pop()
 
368
            if tree_id is None:
 
369
                continue
 
370
            tree = store[tree_id]
 
371
            for name, mode, hexsha in tree.items():
 
372
                subpath = posixpath.join(path, name)
 
373
                ret.add(decode_git_path(subpath))
 
374
                if stat.S_ISDIR(mode):
 
375
                    todo.append((store, subpath, hexsha))
 
376
        return ret
 
377
 
 
378
    def _lookup_path(self, path):
 
379
        if self.tree is None:
 
380
            raise errors.NoSuchFile(path)
 
381
 
 
382
        encoded_path = encode_git_path(path)
 
383
        parts = encoded_path.split(b'/')
 
384
        hexsha = self.tree
 
385
        store = self.store
 
386
        mode = None
 
387
        for i, p in enumerate(parts):
 
388
            if not p:
 
389
                continue
 
390
            obj = store[hexsha]
 
391
            if not isinstance(obj, Tree):
 
392
                raise NotTreeError(hexsha)
 
393
            try:
 
394
                mode, hexsha = obj[p]
 
395
            except KeyError:
 
396
                raise errors.NoSuchFile(path)
 
397
            if S_ISGITLINK(mode) and i != len(parts) - 1:
 
398
                store = self._get_submodule_store(b'/'.join(parts[:i + 1]))
 
399
                hexsha = store[hexsha].tree
 
400
        return (store, mode, hexsha)
 
401
 
 
402
    def is_executable(self, path):
 
403
        (store, mode, hexsha) = self._lookup_path(path)
 
404
        if mode is None:
 
405
            # the tree root is a directory
 
406
            return False
 
407
        return mode_is_executable(mode)
 
408
 
 
409
    def kind(self, path):
 
410
        (store, mode, hexsha) = self._lookup_path(path)
 
411
        if mode is None:
 
412
            # the tree root is a directory
 
413
            return "directory"
 
414
        return mode_kind(mode)
 
415
 
 
416
    def has_filename(self, path):
 
417
        try:
 
418
            self._lookup_path(path)
 
419
        except errors.NoSuchFile:
 
420
            return False
 
421
        else:
 
422
            return True
 
423
 
 
424
    def _submodule_info(self):
 
425
        if self._submodules is None:
 
426
            try:
 
427
                with self.get_file('.gitmodules') as f:
 
428
                    config = GitConfigFile.from_file(f)
 
429
                    self._submodules = {
 
430
                        path: (url, section)
 
431
                        for path, url, section in parse_submodules(config)}
 
432
            except errors.NoSuchFile:
 
433
                self._submodules = {}
 
434
        return self._submodules
 
435
 
 
436
    def list_files(self, include_root=False, from_dir=None, recursive=True,
 
437
                   recurse_nested=False):
 
438
        if self.tree is None:
 
439
            return
 
440
        if from_dir is None or from_dir == '.':
 
441
            from_dir = u""
 
442
        (store, mode, hexsha) = self._lookup_path(from_dir)
 
443
        if mode is None:  # Root
 
444
            root_ie = self._get_dir_ie(b"", None)
 
445
        else:
 
446
            parent_path = posixpath.dirname(from_dir)
 
447
            parent_id = self.mapping.generate_file_id(parent_path)
 
448
            if mode_kind(mode) == 'directory':
 
449
                root_ie = self._get_dir_ie(encode_git_path(from_dir), parent_id)
 
450
            else:
 
451
                root_ie = self._get_file_ie(
 
452
                    store, encode_git_path(from_dir),
 
453
                    posixpath.basename(from_dir), mode, hexsha)
 
454
        if include_root:
 
455
            yield (from_dir, "V", root_ie.kind, root_ie)
 
456
        todo = []
 
457
        if root_ie.kind == 'directory':
 
458
            todo.append((store, encode_git_path(from_dir),
 
459
                         b"", hexsha, root_ie.file_id))
 
460
        while todo:
 
461
            (store, path, relpath, hexsha, parent_id) = todo.pop()
 
462
            tree = store[hexsha]
 
463
            for name, mode, hexsha in tree.iteritems():
 
464
                if self.mapping.is_special_file(name):
 
465
                    continue
 
466
                child_path = posixpath.join(path, name)
 
467
                child_relpath = posixpath.join(relpath, name)
 
468
                if S_ISGITLINK(mode) and recurse_nested:
 
469
                    mode = stat.S_IFDIR
 
470
                    store = self._get_submodule_store(child_relpath)
 
471
                    hexsha = store[hexsha].tree
 
472
                if stat.S_ISDIR(mode):
 
473
                    ie = self._get_dir_ie(child_path, parent_id)
 
474
                    if recursive:
 
475
                        todo.append(
 
476
                            (store, child_path, child_relpath, hexsha,
 
477
                             ie.file_id))
 
478
                else:
 
479
                    ie = self._get_file_ie(
 
480
                        store, child_path, name, mode, hexsha, parent_id)
 
481
                yield (decode_git_path(child_relpath), "V", ie.kind, ie)
 
482
 
 
483
    def _get_file_ie(self, store, path, name, mode, hexsha, parent_id):
 
484
        if not isinstance(path, bytes):
 
485
            raise TypeError(path)
 
486
        if not isinstance(name, bytes):
 
487
            raise TypeError(name)
 
488
        kind = mode_kind(mode)
 
489
        path = decode_git_path(path)
 
490
        name = decode_git_path(name)
 
491
        file_id = self.mapping.generate_file_id(path)
 
492
        ie = entry_factory[kind](file_id, name, parent_id)
 
493
        if kind == 'symlink':
 
494
            ie.symlink_target = decode_git_path(store[hexsha].data)
 
495
        elif kind == 'tree-reference':
 
496
            ie.reference_revision = self.mapping.revision_id_foreign_to_bzr(
 
497
                hexsha)
 
498
        else:
 
499
            data = store[hexsha].data
 
500
            ie.text_sha1 = osutils.sha_string(data)
 
501
            ie.text_size = len(data)
 
502
            ie.executable = mode_is_executable(mode)
 
503
        return ie
 
504
 
 
505
    def _get_dir_ie(self, path, parent_id):
 
506
        path = decode_git_path(path)
 
507
        file_id = self.mapping.generate_file_id(path)
 
508
        return GitTreeDirectory(file_id, posixpath.basename(path), parent_id)
 
509
 
 
510
    def iter_child_entries(self, path):
 
511
        (store, mode, tree_sha) = self._lookup_path(path)
 
512
 
 
513
        if mode is not None and not stat.S_ISDIR(mode):
 
514
            return
 
515
 
 
516
        encoded_path = encode_git_path(path)
 
517
        file_id = self.path2id(path)
 
518
        tree = store[tree_sha]
 
519
        for name, mode, hexsha in tree.iteritems():
 
520
            if self.mapping.is_special_file(name):
 
521
                continue
 
522
            child_path = posixpath.join(encoded_path, name)
 
523
            if stat.S_ISDIR(mode):
 
524
                yield self._get_dir_ie(child_path, file_id)
 
525
            else:
 
526
                yield self._get_file_ie(store, child_path, name, mode, hexsha,
 
527
                                        file_id)
 
528
 
 
529
    def iter_entries_by_dir(self, specific_files=None,
 
530
                            recurse_nested=False):
 
531
        if self.tree is None:
 
532
            return
 
533
        if specific_files is not None:
 
534
            if specific_files in ([""], []):
 
535
                specific_files = None
 
536
            else:
 
537
                specific_files = set([encode_git_path(p)
 
538
                                      for p in specific_files])
 
539
        todo = deque([(self.store, b"", self.tree, self.path2id(''))])
 
540
        if specific_files is None or u"" in specific_files:
 
541
            yield u"", self._get_dir_ie(b"", None)
 
542
        while todo:
 
543
            store, path, tree_sha, parent_id = todo.popleft()
 
544
            tree = store[tree_sha]
 
545
            extradirs = []
 
546
            for name, mode, hexsha in tree.iteritems():
 
547
                if self.mapping.is_special_file(name):
 
548
                    continue
 
549
                child_path = posixpath.join(path, name)
 
550
                child_path_decoded = decode_git_path(child_path)
 
551
                if recurse_nested and S_ISGITLINK(mode):
 
552
                    mode = stat.S_IFDIR
 
553
                    store = self._get_submodule_store(child_path)
 
554
                    hexsha = store[hexsha].tree
 
555
                if stat.S_ISDIR(mode):
 
556
                    if (specific_files is None or
 
557
                            any([p for p in specific_files if p.startswith(
 
558
                                child_path)])):
 
559
                        extradirs.append(
 
560
                            (store, child_path, hexsha,
 
561
                             self.path2id(child_path_decoded)))
 
562
                if specific_files is None or child_path in specific_files:
 
563
                    if stat.S_ISDIR(mode):
 
564
                        yield (child_path_decoded,
 
565
                               self._get_dir_ie(child_path, parent_id))
 
566
                    else:
 
567
                        yield (child_path_decoded,
 
568
                               self._get_file_ie(store, child_path, name, mode,
 
569
                                                 hexsha, parent_id))
 
570
            todo.extendleft(reversed(extradirs))
 
571
 
 
572
    def iter_references(self):
 
573
        if self.supports_tree_reference():
 
574
            for path, entry in self.iter_entries_by_dir():
 
575
                if entry.kind == 'tree-reference':
 
576
                    yield path
53
577
 
54
578
    def get_revision_id(self):
55
579
        """See RevisionTree.get_revision_id."""
56
580
        return self._revision_id
57
581
 
58
 
    def get_file_text(self, file_id, path=None):
 
582
    def get_file_sha1(self, path, stat_value=None):
 
583
        if self.tree is None:
 
584
            raise errors.NoSuchFile(path)
 
585
        return osutils.sha_string(self.get_file_text(path))
 
586
 
 
587
    def get_file_verifier(self, path, stat_value=None):
 
588
        (store, mode, hexsha) = self._lookup_path(path)
 
589
        return ("GIT", hexsha)
 
590
 
 
591
    def get_file_size(self, path):
 
592
        (store, mode, hexsha) = self._lookup_path(path)
 
593
        if stat.S_ISREG(mode):
 
594
            return len(store[hexsha].data)
 
595
        return None
 
596
 
 
597
    def get_file_text(self, path):
59
598
        """See RevisionTree.get_file_text."""
60
 
        if path is not None:
61
 
            entry = self._inventory._get_ie(path)
62
 
        else:
63
 
            entry = self._inventory[file_id]
64
 
        if entry.kind in ('directory', 'tree-reference'):
65
 
            return ""
66
 
        return entry.object.data
67
 
 
68
 
 
69
 
def tree_delta_from_git_changes(changes, mapping,
70
 
        (old_fileid_map, new_fileid_map), specific_file=None,
71
 
        require_versioned=False):
 
599
        (store, mode, hexsha) = self._lookup_path(path)
 
600
        if stat.S_ISREG(mode):
 
601
            return store[hexsha].data
 
602
        else:
 
603
            return b""
 
604
 
 
605
    def get_symlink_target(self, path):
 
606
        """See RevisionTree.get_symlink_target."""
 
607
        (store, mode, hexsha) = self._lookup_path(path)
 
608
        if stat.S_ISLNK(mode):
 
609
            return decode_git_path(store[hexsha].data)
 
610
        else:
 
611
            return None
 
612
 
 
613
    def get_reference_revision(self, path):
 
614
        """See RevisionTree.get_symlink_target."""
 
615
        (store, mode, hexsha) = self._lookup_path(path)
 
616
        if S_ISGITLINK(mode):
 
617
            try:
 
618
                nested_repo = self._get_submodule_repository(encode_git_path(path))
 
619
            except errors.NotBranchError:
 
620
                return self.mapping.revision_id_foreign_to_bzr(hexsha)
 
621
            else:
 
622
                return nested_repo.lookup_foreign_revision_id(hexsha)
 
623
        else:
 
624
            return None
 
625
 
 
626
    def _comparison_data(self, entry, path):
 
627
        if entry is None:
 
628
            return None, False, None
 
629
        return entry.kind, entry.executable, None
 
630
 
 
631
    def path_content_summary(self, path):
 
632
        """See Tree.path_content_summary."""
 
633
        try:
 
634
            (store, mode, hexsha) = self._lookup_path(path)
 
635
        except errors.NoSuchFile:
 
636
            return ('missing', None, None, None)
 
637
        kind = mode_kind(mode)
 
638
        if kind == 'file':
 
639
            executable = mode_is_executable(mode)
 
640
            contents = store[hexsha].data
 
641
            return (kind, len(contents), executable,
 
642
                    osutils.sha_string(contents))
 
643
        elif kind == 'symlink':
 
644
            return (kind, None, None, decode_git_path(store[hexsha].data))
 
645
        elif kind == 'tree-reference':
 
646
            nested_repo = self._get_submodule_repository(encode_git_path(path))
 
647
            return (kind, None, None,
 
648
                    nested_repo.lookup_foreign_revision_id(hexsha))
 
649
        else:
 
650
            return (kind, None, None, None)
 
651
 
 
652
    def find_related_paths_across_trees(self, paths, trees=[],
 
653
                                        require_versioned=True):
 
654
        if paths is None:
 
655
            return None
 
656
        if require_versioned:
 
657
            trees = [self] + (trees if trees is not None else [])
 
658
            unversioned = set()
 
659
            for p in paths:
 
660
                for t in trees:
 
661
                    if t.is_versioned(p):
 
662
                        break
 
663
                else:
 
664
                    unversioned.add(p)
 
665
            if unversioned:
 
666
                raise errors.PathsNotVersionedError(unversioned)
 
667
        return filter(self.is_versioned, paths)
 
668
 
 
669
    def _iter_tree_contents(self, include_trees=False):
 
670
        if self.tree is None:
 
671
            return iter([])
 
672
        return self.store.iter_tree_contents(
 
673
            self.tree, include_trees=include_trees)
 
674
 
 
675
    def annotate_iter(self, path, default_revision=CURRENT_REVISION):
 
676
        """Return an iterator of revision_id, line tuples.
 
677
 
 
678
        For working trees (and mutable trees in general), the special
 
679
        revision_id 'current:' will be used for lines that are new in this
 
680
        tree, e.g. uncommitted changes.
 
681
        :param default_revision: For lines that don't match a basis, mark them
 
682
            with this revision id. Not all implementations will make use of
 
683
            this value.
 
684
        """
 
685
        with self.lock_read():
 
686
            # Now we have the parents of this content
 
687
            from breezy.annotate import Annotator
 
688
            from .annotate import AnnotateProvider
 
689
            annotator = Annotator(AnnotateProvider(
 
690
                self._repository._file_change_scanner))
 
691
            this_key = (path, self.get_file_revision(path))
 
692
            annotations = [(key[-1], line)
 
693
                           for key, line in annotator.annotate_flat(this_key)]
 
694
            return annotations
 
695
 
 
696
    def _get_rules_searcher(self, default_searcher):
 
697
        return default_searcher
 
698
 
 
699
    def walkdirs(self, prefix=u""):
 
700
        (store, mode, hexsha) = self._lookup_path(prefix)
 
701
        todo = deque(
 
702
            [(store, encode_git_path(prefix), hexsha, self.path2id(prefix))])
 
703
        while todo:
 
704
            store, path, tree_sha, parent_id = todo.popleft()
 
705
            path_decoded = decode_git_path(path)
 
706
            tree = store[tree_sha]
 
707
            children = []
 
708
            for name, mode, hexsha in tree.iteritems():
 
709
                if self.mapping.is_special_file(name):
 
710
                    continue
 
711
                child_path = posixpath.join(path, name)
 
712
                file_id = self.path2id(decode_git_path(child_path))
 
713
                if stat.S_ISDIR(mode):
 
714
                    todo.append((store, child_path, hexsha, file_id))
 
715
                children.append(
 
716
                    (decode_git_path(child_path), decode_git_path(name),
 
717
                        mode_kind(mode), None,
 
718
                        file_id, mode_kind(mode)))
 
719
            yield (path_decoded, parent_id), children
 
720
 
 
721
    def preview_transform(self, pb=None):
 
722
        from .transform import GitTransformPreview
 
723
        return GitTransformPreview(self, pb=pb)
 
724
 
 
725
 
 
726
def tree_delta_from_git_changes(changes, mappings,
 
727
                                specific_files=None,
 
728
                                require_versioned=False, include_root=False,
 
729
                                source_extras=None, target_extras=None):
72
730
    """Create a TreeDelta from two git trees.
73
731
 
74
732
    source and target are iterators over tuples with:
75
733
        (filename, sha, mode)
76
734
    """
 
735
    (old_mapping, new_mapping) = mappings
 
736
    if target_extras is None:
 
737
        target_extras = set()
 
738
    if source_extras is None:
 
739
        source_extras = set()
77
740
    ret = delta.TreeDelta()
78
 
    for (oldpath, newpath), (oldmode, newmode), (oldsha, newsha) in changes:
79
 
        if mapping.is_control_file(oldpath):
 
741
    added = []
 
742
    for (change_type, old, new) in changes:
 
743
        (oldpath, oldmode, oldsha) = old
 
744
        (newpath, newmode, newsha) = new
 
745
        if newpath == b'' and not include_root:
 
746
            continue
 
747
        copied = (change_type == 'copy')
 
748
        if oldpath is not None:
 
749
            oldpath_decoded = decode_git_path(oldpath)
 
750
        else:
 
751
            oldpath_decoded = None
 
752
        if newpath is not None:
 
753
            newpath_decoded = decode_git_path(newpath)
 
754
        else:
 
755
            newpath_decoded = None
 
756
        if not (specific_files is None or
 
757
                (oldpath is not None and
 
758
                    osutils.is_inside_or_parent_of_any(
 
759
                        specific_files, oldpath_decoded)) or
 
760
                (newpath is not None and
 
761
                    osutils.is_inside_or_parent_of_any(
 
762
                        specific_files, newpath_decoded))):
 
763
            continue
 
764
 
 
765
        if oldpath is None:
 
766
            oldexe = None
 
767
            oldkind = None
 
768
            oldname = None
 
769
            oldparent = None
 
770
            oldversioned = False
 
771
        else:
 
772
            oldversioned = (oldpath not in source_extras)
 
773
            if oldmode:
 
774
                oldexe = mode_is_executable(oldmode)
 
775
                oldkind = mode_kind(oldmode)
 
776
            else:
 
777
                oldexe = False
 
778
                oldkind = None
 
779
            if oldpath == b'':
 
780
                oldparent = None
 
781
                oldname = u''
 
782
            else:
 
783
                (oldparentpath, oldname) = osutils.split(oldpath_decoded)
 
784
                oldparent = old_mapping.generate_file_id(oldparentpath)
 
785
        if newpath is None:
 
786
            newexe = None
 
787
            newkind = None
 
788
            newname = None
 
789
            newparent = None
 
790
            newversioned = False
 
791
        else:
 
792
            newversioned = (newpath not in target_extras)
 
793
            if newmode:
 
794
                newexe = mode_is_executable(newmode)
 
795
                newkind = mode_kind(newmode)
 
796
            else:
 
797
                newexe = False
 
798
                newkind = None
 
799
            if newpath_decoded == u'':
 
800
                newparent = None
 
801
                newname = u''
 
802
            else:
 
803
                newparentpath, newname = osutils.split(newpath_decoded)
 
804
                newparent = new_mapping.generate_file_id(newparentpath)
 
805
        if oldversioned and not copied:
 
806
            fileid = old_mapping.generate_file_id(oldpath_decoded)
 
807
        elif newversioned:
 
808
            fileid = new_mapping.generate_file_id(newpath_decoded)
 
809
        else:
 
810
            fileid = None
 
811
        if old_mapping.is_special_file(oldpath):
80
812
            oldpath = None
81
 
        if mapping.is_control_file(newpath):
 
813
        if new_mapping.is_special_file(newpath):
82
814
            newpath = None
83
815
        if oldpath is None and newpath is None:
84
816
            continue
85
 
        if oldpath is None:
86
 
            ret.added.append((newpath, new_fileid_map.lookup_file_id(newpath.encode("utf-8")), mode_kind(newmode)))
87
 
        elif newpath is None:
88
 
            ret.removed.append((oldpath, old_fileid_map.lookup_file_id(oldpath.encode("utf-8")), mode_kind(oldmode)))
89
 
        elif oldpath != newpath:
90
 
            ret.renamed.append((oldpath, newpath, old_fileid_map.lookup_file_id(oldpath.encode("utf-8")), mode_kind(newmode), (oldsha != newsha), (oldmode != newmode)))
 
817
        change = _mod_tree.TreeChange(
 
818
            fileid, (oldpath_decoded, newpath_decoded), (oldsha != newsha),
 
819
            (oldversioned, newversioned),
 
820
            (oldparent, newparent), (oldname, newname),
 
821
            (oldkind, newkind), (oldexe, newexe),
 
822
            copied=copied)
 
823
        if newpath is not None and not newversioned and newkind != 'directory':
 
824
            change.file_id = None
 
825
            ret.unversioned.append(change)
 
826
        elif change_type == 'add':
 
827
            added.append((newpath, newkind))
 
828
        elif newpath is None or newmode == 0:
 
829
            ret.removed.append(change)
 
830
        elif change_type == 'delete':
 
831
            ret.removed.append(change)
 
832
        elif change_type == 'copy':
 
833
            if stat.S_ISDIR(oldmode) and stat.S_ISDIR(newmode):
 
834
                continue
 
835
            ret.copied.append(change)
 
836
        elif change_type == 'rename':
 
837
            if stat.S_ISDIR(oldmode) and stat.S_ISDIR(newmode):
 
838
                continue
 
839
            ret.renamed.append(change)
91
840
        elif mode_kind(oldmode) != mode_kind(newmode):
92
 
            ret.kind_changed.append((newpath, new_fileid_map.lookup_file_id(newpath.encode("utf-8")), mode_kind(oldmode), mode_kind(newmode)))
 
841
            ret.kind_changed.append(change)
93
842
        elif oldsha != newsha or oldmode != newmode:
94
 
            ret.modified.append((newpath, new_fileid_map.lookup_file_id(newpath.encode("utf-8")), mode_kind(newmode), (oldsha != newsha), (oldmode != newmode)))
 
843
            if stat.S_ISDIR(oldmode) and stat.S_ISDIR(newmode):
 
844
                continue
 
845
            ret.modified.append(change)
95
846
        else:
96
 
            ret.unchanged.append((newpath, new_fileid_map.lookup_file_id(newpath.encode("utf-8")), mode_kind(newmode)))
 
847
            ret.unchanged.append(change)
 
848
 
 
849
    implicit_dirs = {b''}
 
850
    for path, kind in added:
 
851
        if kind == 'directory' or path in target_extras:
 
852
            continue
 
853
        implicit_dirs.update(osutils.parent_directories(path))
 
854
 
 
855
    for path, kind in added:
 
856
        if kind == 'directory' and path not in implicit_dirs:
 
857
            continue
 
858
        path_decoded = decode_git_path(path)
 
859
        parent_path, basename = osutils.split(path_decoded)
 
860
        parent_id = new_mapping.generate_file_id(parent_path)
 
861
        file_id = new_mapping.generate_file_id(path_decoded)
 
862
        ret.added.append(
 
863
            _mod_tree.TreeChange(
 
864
                file_id, (None, path_decoded), True,
 
865
                (False, True),
 
866
                (None, parent_id),
 
867
                (None, basename), (None, kind), (None, False)))
 
868
 
97
869
    return ret
98
870
 
99
871
 
100
 
def changes_from_git_changes(changes, mapping, specific_file=None,
101
 
                                require_versioned=False):
 
872
def changes_from_git_changes(changes, mapping, specific_files=None,
 
873
                             include_unchanged=False, source_extras=None,
 
874
                             target_extras=None):
102
875
    """Create a iter_changes-like generator from a git stream.
103
876
 
104
877
    source and target are iterators over tuples with:
105
878
        (filename, sha, mode)
106
879
    """
107
 
    for (oldpath, newpath), (oldmode, newmode), (oldsha, newsha) in changes:
108
 
        path = (oldpath, newpath)
 
880
    if target_extras is None:
 
881
        target_extras = set()
 
882
    if source_extras is None:
 
883
        source_extras = set()
 
884
    for (change_type, old, new) in changes:
 
885
        if change_type == 'unchanged' and not include_unchanged:
 
886
            continue
 
887
        (oldpath, oldmode, oldsha) = old
 
888
        (newpath, newmode, newsha) = new
 
889
        if oldpath is not None:
 
890
            oldpath_decoded = decode_git_path(oldpath)
 
891
        else:
 
892
            oldpath_decoded = None
 
893
        if newpath is not None:
 
894
            newpath_decoded = decode_git_path(newpath)
 
895
        else:
 
896
            newpath_decoded = None
 
897
        if not (specific_files is None or
 
898
                (oldpath_decoded is not None and
 
899
                    osutils.is_inside_or_parent_of_any(
 
900
                        specific_files, oldpath_decoded)) or
 
901
                (newpath_decoded is not None and
 
902
                    osutils.is_inside_or_parent_of_any(
 
903
                        specific_files, newpath_decoded))):
 
904
            continue
 
905
        if oldpath is not None and mapping.is_special_file(oldpath):
 
906
            continue
 
907
        if newpath is not None and mapping.is_special_file(newpath):
 
908
            continue
109
909
        if oldpath is None:
110
 
            fileid = mapping.generate_file_id(newpath)
111
910
            oldexe = None
112
911
            oldkind = None
113
912
            oldname = None
114
913
            oldparent = None
 
914
            oldversioned = False
115
915
        else:
116
 
            oldexe = mode_is_executable(oldmode)
117
 
            oldkind = mode_kind(oldmode)
118
 
            try:
119
 
                (oldparentpath, oldname) = oldpath.rsplit("/", 1)
120
 
            except ValueError:
 
916
            oldversioned = (oldpath not in source_extras)
 
917
            if oldmode:
 
918
                oldexe = mode_is_executable(oldmode)
 
919
                oldkind = mode_kind(oldmode)
 
920
            else:
 
921
                oldexe = False
 
922
                oldkind = None
 
923
            if oldpath_decoded == u'':
121
924
                oldparent = None
122
 
                oldname = oldpath
 
925
                oldname = u''
123
926
            else:
 
927
                (oldparentpath, oldname) = osutils.split(oldpath_decoded)
124
928
                oldparent = mapping.generate_file_id(oldparentpath)
125
 
            fileid = mapping.generate_file_id(oldpath)
126
929
        if newpath is None:
127
930
            newexe = None
128
931
            newkind = None
129
932
            newname = None
130
933
            newparent = None
 
934
            newversioned = False
131
935
        else:
132
 
            newexe = mode_is_executable(newmode)
133
 
            newkind = mode_kind(newmode)
134
 
            try:
135
 
                newparentpath, newname = newpath.rsplit("/", 1)
136
 
            except ValueError:
 
936
            newversioned = (newpath not in target_extras)
 
937
            if newmode:
 
938
                newexe = mode_is_executable(newmode)
 
939
                newkind = mode_kind(newmode)
 
940
            else:
 
941
                newexe = False
 
942
                newkind = None
 
943
            if newpath_decoded == u'':
137
944
                newparent = None
138
 
                newname = newpath
 
945
                newname = u''
139
946
            else:
 
947
                newparentpath, newname = osutils.split(newpath_decoded)
140
948
                newparent = mapping.generate_file_id(newparentpath)
141
 
        yield (fileid, (oldpath, newpath), (oldsha != newsha),
142
 
             (oldpath is not None, newpath is not None),
143
 
             (oldparent, newparent), (oldname, newname),
144
 
             (oldkind, newkind), (oldexe, newexe))
145
 
 
146
 
 
147
 
class InterGitRevisionTrees(tree.InterTree):
148
 
    """InterTree that works between two git revision trees."""
 
949
        if (not include_unchanged and
 
950
                oldkind == 'directory' and newkind == 'directory' and
 
951
                oldpath_decoded == newpath_decoded):
 
952
            continue
 
953
        if oldversioned and change_type != 'copy':
 
954
            fileid = mapping.generate_file_id(oldpath_decoded)
 
955
        elif newversioned:
 
956
            fileid = mapping.generate_file_id(newpath_decoded)
 
957
        else:
 
958
            fileid = None
 
959
        yield _mod_tree.TreeChange(
 
960
            fileid, (oldpath_decoded, newpath_decoded), (oldsha != newsha),
 
961
            (oldversioned, newversioned),
 
962
            (oldparent, newparent), (oldname, newname),
 
963
            (oldkind, newkind), (oldexe, newexe),
 
964
            copied=(change_type == 'copy'))
 
965
 
 
966
 
 
967
class InterGitTrees(_mod_tree.InterTree):
 
968
    """InterTree that works between two git trees."""
149
969
 
150
970
    _matching_from_tree_format = None
151
971
    _matching_to_tree_format = None
159
979
    def compare(self, want_unchanged=False, specific_files=None,
160
980
                extra_trees=None, require_versioned=False, include_root=False,
161
981
                want_unversioned=False):
162
 
        if self.source._repository._git.object_store != self.target._repository._git.object_store:
163
 
            raise AssertionError
164
 
        changes = self.source._repository._git.object_store.tree_changes(
165
 
            self.source.tree, self.target.tree, want_unchanged=want_unchanged)
166
 
        source_fileid_map = self.source.mapping.get_fileid_map(
167
 
            self.source._repository._git.object_store.__getitem__,
168
 
            self.source.tree)
169
 
        target_fileid_map = self.target.mapping.get_fileid_map(
170
 
            self.target._repository._git.object_store.__getitem__,
171
 
            self.target.tree)
172
 
        return tree_delta_from_git_changes(changes, self.target.mapping,
173
 
            (source_fileid_map, target_fileid_map),
174
 
            specific_file=specific_files)
 
982
        with self.lock_read():
 
983
            changes, source_extras, target_extras = self._iter_git_changes(
 
984
                want_unchanged=want_unchanged,
 
985
                require_versioned=require_versioned,
 
986
                specific_files=specific_files,
 
987
                extra_trees=extra_trees,
 
988
                want_unversioned=want_unversioned)
 
989
            return tree_delta_from_git_changes(
 
990
                changes, (self.source.mapping, self.target.mapping),
 
991
                specific_files=specific_files,
 
992
                include_root=include_root,
 
993
                source_extras=source_extras, target_extras=target_extras)
175
994
 
176
995
    def iter_changes(self, include_unchanged=False, specific_files=None,
177
 
        pb=None, extra_trees=[], require_versioned=True,
178
 
        want_unversioned=False):
179
 
        if self.source._repository._git.object_store != self.target._repository._git.object_store:
180
 
            raise AssertionError
181
 
        changes = self.source._repository._git.object_store.tree_changes(
182
 
            self.source.tree, self.target.tree,
183
 
            want_unchanged=include_unchanged)
184
 
        return changes_from_git_changes(changes, self.target.mapping,
185
 
            specific_file=specific_files)
186
 
 
187
 
 
188
 
tree.InterTree.register_optimiser(InterGitRevisionTrees)
 
996
                     pb=None, extra_trees=[], require_versioned=True,
 
997
                     want_unversioned=False):
 
998
        with self.lock_read():
 
999
            changes, source_extras, target_extras = self._iter_git_changes(
 
1000
                want_unchanged=include_unchanged,
 
1001
                require_versioned=require_versioned,
 
1002
                specific_files=specific_files,
 
1003
                extra_trees=extra_trees,
 
1004
                want_unversioned=want_unversioned)
 
1005
            return changes_from_git_changes(
 
1006
                changes, self.target.mapping,
 
1007
                specific_files=specific_files,
 
1008
                include_unchanged=include_unchanged,
 
1009
                source_extras=source_extras,
 
1010
                target_extras=target_extras)
 
1011
 
 
1012
    def _iter_git_changes(self, want_unchanged=False, specific_files=None,
 
1013
                          require_versioned=False, extra_trees=None,
 
1014
                          want_unversioned=False, include_trees=True):
 
1015
        raise NotImplementedError(self._iter_git_changes)
 
1016
 
 
1017
    def find_target_path(self, path, recurse='none'):
 
1018
        ret = self.find_target_paths([path], recurse=recurse)
 
1019
        return ret[path]
 
1020
 
 
1021
    def find_source_path(self, path, recurse='none'):
 
1022
        ret = self.find_source_paths([path], recurse=recurse)
 
1023
        return ret[path]
 
1024
 
 
1025
    def find_target_paths(self, paths, recurse='none'):
 
1026
        paths = set(paths)
 
1027
        ret = {}
 
1028
        changes = self._iter_git_changes(
 
1029
            specific_files=paths, include_trees=False)[0]
 
1030
        for (change_type, old, new) in changes:
 
1031
            if old[0] is None:
 
1032
                continue
 
1033
            oldpath = decode_git_path(old[0])
 
1034
            if oldpath in paths:
 
1035
                ret[oldpath] = decode_git_path(new[0]) if new[0] else None
 
1036
        for path in paths:
 
1037
            if path not in ret:
 
1038
                if self.source.has_filename(path):
 
1039
                    if self.target.has_filename(path):
 
1040
                        ret[path] = path
 
1041
                    else:
 
1042
                        ret[path] = None
 
1043
                else:
 
1044
                    raise errors.NoSuchFile(path)
 
1045
        return ret
 
1046
 
 
1047
    def find_source_paths(self, paths, recurse='none'):
 
1048
        paths = set(paths)
 
1049
        ret = {}
 
1050
        changes = self._iter_git_changes(
 
1051
            specific_files=paths, include_trees=False)[0]
 
1052
        for (change_type, old, new) in changes:
 
1053
            if new[0] is None:
 
1054
                continue
 
1055
            newpath = decode_git_path(new[0])
 
1056
            if newpath in paths:
 
1057
                ret[newpath] = decode_git_path(old[0]) if old[0] else None
 
1058
        for path in paths:
 
1059
            if path not in ret:
 
1060
                if self.target.has_filename(path):
 
1061
                    if self.source.has_filename(path):
 
1062
                        ret[path] = path
 
1063
                    else:
 
1064
                        ret[path] = None
 
1065
                else:
 
1066
                    raise errors.NoSuchFile(path)
 
1067
        return ret
 
1068
 
 
1069
 
 
1070
class InterGitRevisionTrees(InterGitTrees):
 
1071
    """InterTree that works between two git revision trees."""
 
1072
 
 
1073
    _matching_from_tree_format = None
 
1074
    _matching_to_tree_format = None
 
1075
    _test_mutable_trees_to_test_trees = None
 
1076
 
 
1077
    @classmethod
 
1078
    def is_compatible(cls, source, target):
 
1079
        return (isinstance(source, GitRevisionTree) and
 
1080
                isinstance(target, GitRevisionTree))
 
1081
 
 
1082
    def _iter_git_changes(self, want_unchanged=False, specific_files=None,
 
1083
                          require_versioned=True, extra_trees=None,
 
1084
                          want_unversioned=False, include_trees=True):
 
1085
        trees = [self.source]
 
1086
        if extra_trees is not None:
 
1087
            trees.extend(extra_trees)
 
1088
        if specific_files is not None:
 
1089
            specific_files = self.target.find_related_paths_across_trees(
 
1090
                specific_files, trees,
 
1091
                require_versioned=require_versioned)
 
1092
 
 
1093
        if (self.source._repository._git.object_store !=
 
1094
                self.target._repository._git.object_store):
 
1095
            store = OverlayObjectStore(
 
1096
                [self.source._repository._git.object_store,
 
1097
                    self.target._repository._git.object_store])
 
1098
        else:
 
1099
            store = self.source._repository._git.object_store
 
1100
        rename_detector = RenameDetector(store)
 
1101
        changes = tree_changes(
 
1102
            store, self.source.tree, self.target.tree,
 
1103
            want_unchanged=want_unchanged, include_trees=include_trees,
 
1104
            change_type_same=True, rename_detector=rename_detector)
 
1105
        return changes, set(), set()
 
1106
 
 
1107
 
 
1108
_mod_tree.InterTree.register_optimiser(InterGitRevisionTrees)
 
1109
 
 
1110
 
 
1111
class MutableGitIndexTree(mutabletree.MutableTree):
 
1112
 
 
1113
    def __init__(self):
 
1114
        self._lock_mode = None
 
1115
        self._lock_count = 0
 
1116
        self._versioned_dirs = None
 
1117
        self._index_dirty = False
 
1118
        self._submodules = None
 
1119
 
 
1120
    def is_versioned(self, path):
 
1121
        with self.lock_read():
 
1122
            path = encode_git_path(path.rstrip('/'))
 
1123
            (index, subpath) = self._lookup_index(path)
 
1124
            return (subpath in index or self._has_dir(path))
 
1125
 
 
1126
    def _has_dir(self, path):
 
1127
        if not isinstance(path, bytes):
 
1128
            raise TypeError(path)
 
1129
        if path == b"":
 
1130
            return True
 
1131
        if self._versioned_dirs is None:
 
1132
            self._load_dirs()
 
1133
        return path in self._versioned_dirs
 
1134
 
 
1135
    def _load_dirs(self):
 
1136
        if self._lock_mode is None:
 
1137
            raise errors.ObjectNotLocked(self)
 
1138
        self._versioned_dirs = set()
 
1139
        for p, i in self._recurse_index_entries():
 
1140
            self._ensure_versioned_dir(posixpath.dirname(p))
 
1141
 
 
1142
    def _ensure_versioned_dir(self, dirname):
 
1143
        if not isinstance(dirname, bytes):
 
1144
            raise TypeError(dirname)
 
1145
        if dirname in self._versioned_dirs:
 
1146
            return
 
1147
        if dirname != b"":
 
1148
            self._ensure_versioned_dir(posixpath.dirname(dirname))
 
1149
        self._versioned_dirs.add(dirname)
 
1150
 
 
1151
    def path2id(self, path):
 
1152
        with self.lock_read():
 
1153
            path = path.rstrip('/')
 
1154
            if self.is_versioned(path.rstrip('/')):
 
1155
                return self.mapping.generate_file_id(
 
1156
                    osutils.safe_unicode(path))
 
1157
            return None
 
1158
 
 
1159
    def id2path(self, file_id, recurse='down'):
 
1160
        if file_id is None:
 
1161
            return ''
 
1162
        if type(file_id) is not bytes:
 
1163
            raise TypeError(file_id)
 
1164
        with self.lock_read():
 
1165
            try:
 
1166
                path = self.mapping.parse_file_id(file_id)
 
1167
            except ValueError:
 
1168
                raise errors.NoSuchId(self, file_id)
 
1169
            if self.is_versioned(path):
 
1170
                return path
 
1171
            raise errors.NoSuchId(self, file_id)
 
1172
 
 
1173
    def _set_root_id(self, file_id):
 
1174
        raise errors.UnsupportedOperation(self._set_root_id, self)
 
1175
 
 
1176
    def _add(self, files, ids, kinds):
 
1177
        for (path, file_id, kind) in zip(files, ids, kinds):
 
1178
            if file_id is not None:
 
1179
                raise workingtree.SettingFileIdUnsupported()
 
1180
            path, can_access = osutils.normalized_filename(path)
 
1181
            if not can_access:
 
1182
                raise errors.InvalidNormalization(path)
 
1183
            self._index_add_entry(path, kind)
 
1184
 
 
1185
    def _read_submodule_head(self, path):
 
1186
        raise NotImplementedError(self._read_submodule_head)
 
1187
 
 
1188
    def _submodule_info(self):
 
1189
        if self._submodules is None:
 
1190
            try:
 
1191
                with self.get_file('.gitmodules') as f:
 
1192
                    config = GitConfigFile.from_file(f)
 
1193
                    self._submodules = {
 
1194
                        path: (url, section)
 
1195
                        for path, url, section in parse_submodules(config)}
 
1196
            except errors.NoSuchFile:
 
1197
                self._submodules = {}
 
1198
        return self._submodules
 
1199
 
 
1200
    def _lookup_index(self, encoded_path):
 
1201
        if not isinstance(encoded_path, bytes):
 
1202
            raise TypeError(encoded_path)
 
1203
        # Common case:
 
1204
        if encoded_path in self.index:
 
1205
            return self.index, encoded_path
 
1206
        # TODO(jelmer): Perhaps have a cache with paths under which some
 
1207
        # submodules exist?
 
1208
        index = self.index
 
1209
        remaining_path = encoded_path
 
1210
        while True:
 
1211
            parts = remaining_path.split(b'/')
 
1212
            for i in range(1, len(parts)):
 
1213
                basepath = b'/'.join(parts[:i])
 
1214
                try:
 
1215
                    (ctime, mtime, dev, ino, mode, uid, gid, size, sha,
 
1216
                     flags) = index[basepath]
 
1217
                except KeyError:
 
1218
                    continue
 
1219
                else:
 
1220
                    if S_ISGITLINK(mode):
 
1221
                        index = self._get_submodule_index(basepath)
 
1222
                        remaining_path = b'/'.join(parts[i:])
 
1223
                        break
 
1224
                    else:
 
1225
                        return index, remaining_path
 
1226
            else:
 
1227
                return index, remaining_path
 
1228
        return index, remaining_path
 
1229
 
 
1230
    def _index_del_entry(self, index, path):
 
1231
        del index[path]
 
1232
        # TODO(jelmer): Keep track of dirty per index
 
1233
        self._index_dirty = True
 
1234
 
 
1235
    def _index_add_entry(self, path, kind, flags=0, reference_revision=None):
 
1236
        if kind == "directory":
 
1237
            # Git indexes don't contain directories
 
1238
            return
 
1239
        if kind == "file":
 
1240
            blob = Blob()
 
1241
            try:
 
1242
                file, stat_val = self.get_file_with_stat(path)
 
1243
            except (errors.NoSuchFile, IOError):
 
1244
                # TODO: Rather than come up with something here, use the old
 
1245
                # index
 
1246
                file = BytesIO()
 
1247
                stat_val = os.stat_result(
 
1248
                    (stat.S_IFREG | 0o644, 0, 0, 0, 0, 0, 0, 0, 0, 0))
 
1249
            with file:
 
1250
                blob.set_raw_string(file.read())
 
1251
            # Add object to the repository if it didn't exist yet
 
1252
            if blob.id not in self.store:
 
1253
                self.store.add_object(blob)
 
1254
            hexsha = blob.id
 
1255
        elif kind == "symlink":
 
1256
            blob = Blob()
 
1257
            try:
 
1258
                stat_val = self._lstat(path)
 
1259
            except EnvironmentError:
 
1260
                # TODO: Rather than come up with something here, use the
 
1261
                # old index
 
1262
                stat_val = os.stat_result(
 
1263
                    (stat.S_IFLNK, 0, 0, 0, 0, 0, 0, 0, 0, 0))
 
1264
            blob.set_raw_string(encode_git_path(self.get_symlink_target(path)))
 
1265
            # Add object to the repository if it didn't exist yet
 
1266
            if blob.id not in self.store:
 
1267
                self.store.add_object(blob)
 
1268
            hexsha = blob.id
 
1269
        elif kind == "tree-reference":
 
1270
            if reference_revision is not None:
 
1271
                hexsha = self.branch.lookup_bzr_revision_id(
 
1272
                    reference_revision)[0]
 
1273
            else:
 
1274
                hexsha = self._read_submodule_head(path)
 
1275
                if hexsha is None:
 
1276
                    raise errors.NoCommits(path)
 
1277
            try:
 
1278
                stat_val = self._lstat(path)
 
1279
            except EnvironmentError:
 
1280
                stat_val = os.stat_result(
 
1281
                    (S_IFGITLINK, 0, 0, 0, 0, 0, 0, 0, 0, 0))
 
1282
            stat_val = os.stat_result((S_IFGITLINK, ) + stat_val[1:])
 
1283
        else:
 
1284
            raise AssertionError("unknown kind '%s'" % kind)
 
1285
        # Add an entry to the index or update the existing entry
 
1286
        ensure_normalized_path(path)
 
1287
        encoded_path = encode_git_path(path)
 
1288
        if b'\r' in encoded_path or b'\n' in encoded_path:
 
1289
            # TODO(jelmer): Why do we need to do this?
 
1290
            trace.mutter('ignoring path with invalid newline in it: %r', path)
 
1291
            return
 
1292
        (index, index_path) = self._lookup_index(encoded_path)
 
1293
        index[index_path] = index_entry_from_stat(stat_val, hexsha, flags)
 
1294
        self._index_dirty = True
 
1295
        if self._versioned_dirs is not None:
 
1296
            self._ensure_versioned_dir(index_path)
 
1297
 
 
1298
    def _recurse_index_entries(self, index=None, basepath=b"",
 
1299
                               recurse_nested=False):
 
1300
        # Iterate over all index entries
 
1301
        with self.lock_read():
 
1302
            if index is None:
 
1303
                index = self.index
 
1304
            for path, value in index.items():
 
1305
                (ctime, mtime, dev, ino, mode, uid, gid, size, sha,
 
1306
                 flags) = value
 
1307
                if S_ISGITLINK(mode) and recurse_nested:
 
1308
                    subindex = self._get_submodule_index(path)
 
1309
                    for entry in self._recurse_index_entries(
 
1310
                            index=subindex, basepath=path,
 
1311
                            recurse_nested=recurse_nested):
 
1312
                        yield entry
 
1313
                else:
 
1314
                    yield (posixpath.join(basepath, path), value)
 
1315
 
 
1316
    def iter_entries_by_dir(self, specific_files=None,
 
1317
                            recurse_nested=False):
 
1318
        with self.lock_read():
 
1319
            if specific_files is not None:
 
1320
                specific_files = set(specific_files)
 
1321
            else:
 
1322
                specific_files = None
 
1323
            root_ie = self._get_dir_ie(u"", None)
 
1324
            ret = {}
 
1325
            if specific_files is None or u"" in specific_files:
 
1326
                ret[(u"", u"")] = root_ie
 
1327
            dir_ids = {u"": root_ie.file_id}
 
1328
            for path, value in self._recurse_index_entries(
 
1329
                    recurse_nested=recurse_nested):
 
1330
                if self.mapping.is_special_file(path):
 
1331
                    continue
 
1332
                path = decode_git_path(path)
 
1333
                if specific_files is not None and path not in specific_files:
 
1334
                    continue
 
1335
                (parent, name) = posixpath.split(path)
 
1336
                try:
 
1337
                    file_ie = self._get_file_ie(name, path, value, None)
 
1338
                except errors.NoSuchFile:
 
1339
                    continue
 
1340
                if specific_files is None:
 
1341
                    for (dir_path, dir_ie) in self._add_missing_parent_ids(
 
1342
                            parent, dir_ids):
 
1343
                        ret[(posixpath.dirname(dir_path), dir_path)] = dir_ie
 
1344
                file_ie.parent_id = self.path2id(parent)
 
1345
                ret[(posixpath.dirname(path), path)] = file_ie
 
1346
            # Special casing for directories
 
1347
            if specific_files:
 
1348
                for path in specific_files:
 
1349
                    key = (posixpath.dirname(path), path)
 
1350
                    if key not in ret and self.is_versioned(path):
 
1351
                        ret[key] = self._get_dir_ie(path, self.path2id(key[0]))
 
1352
            return ((path, ie) for ((_, path), ie) in sorted(ret.items()))
 
1353
 
 
1354
    def iter_references(self):
 
1355
        if self.supports_tree_reference():
 
1356
            # TODO(jelmer): Implement a more efficient version of this
 
1357
            for path, entry in self.iter_entries_by_dir():
 
1358
                if entry.kind == 'tree-reference':
 
1359
                    yield path
 
1360
 
 
1361
    def _get_dir_ie(self, path, parent_id):
 
1362
        file_id = self.path2id(path)
 
1363
        return GitTreeDirectory(file_id,
 
1364
                                posixpath.basename(path).strip("/"), parent_id)
 
1365
 
 
1366
    def _get_file_ie(self, name, path, value, parent_id):
 
1367
        if not isinstance(name, str):
 
1368
            raise TypeError(name)
 
1369
        if not isinstance(path, str):
 
1370
            raise TypeError(path)
 
1371
        if not isinstance(value, tuple) or len(value) != 10:
 
1372
            raise TypeError(value)
 
1373
        (ctime, mtime, dev, ino, mode, uid, gid, size, sha, flags) = value
 
1374
        file_id = self.path2id(path)
 
1375
        if not isinstance(file_id, bytes):
 
1376
            raise TypeError(file_id)
 
1377
        kind = mode_kind(mode)
 
1378
        ie = entry_factory[kind](file_id, name, parent_id)
 
1379
        if kind == 'symlink':
 
1380
            ie.symlink_target = self.get_symlink_target(path)
 
1381
        elif kind == 'tree-reference':
 
1382
            ie.reference_revision = self.get_reference_revision(path)
 
1383
        else:
 
1384
            try:
 
1385
                data = self.get_file_text(path)
 
1386
            except errors.NoSuchFile:
 
1387
                data = None
 
1388
            except IOError as e:
 
1389
                if e.errno != errno.ENOENT:
 
1390
                    raise
 
1391
                data = None
 
1392
            if data is None:
 
1393
                data = self.branch.repository._git.object_store[sha].data
 
1394
            ie.text_sha1 = osutils.sha_string(data)
 
1395
            ie.text_size = len(data)
 
1396
            ie.executable = bool(stat.S_ISREG(mode) and stat.S_IEXEC & mode)
 
1397
        return ie
 
1398
 
 
1399
    def _add_missing_parent_ids(self, path, dir_ids):
 
1400
        if path in dir_ids:
 
1401
            return []
 
1402
        parent = posixpath.dirname(path).strip("/")
 
1403
        ret = self._add_missing_parent_ids(parent, dir_ids)
 
1404
        parent_id = dir_ids[parent]
 
1405
        ie = self._get_dir_ie(path, parent_id)
 
1406
        dir_ids[path] = ie.file_id
 
1407
        ret.append((path, ie))
 
1408
        return ret
 
1409
 
 
1410
    def _comparison_data(self, entry, path):
 
1411
        if entry is None:
 
1412
            return None, False, None
 
1413
        return entry.kind, entry.executable, None
 
1414
 
 
1415
    def _unversion_path(self, path):
 
1416
        if self._lock_mode is None:
 
1417
            raise errors.ObjectNotLocked(self)
 
1418
        encoded_path = encode_git_path(path)
 
1419
        count = 0
 
1420
        (index, subpath) = self._lookup_index(encoded_path)
 
1421
        try:
 
1422
            self._index_del_entry(index, encoded_path)
 
1423
        except KeyError:
 
1424
            # A directory, perhaps?
 
1425
            # TODO(jelmer): Deletes that involve submodules?
 
1426
            for p in list(index):
 
1427
                if p.startswith(subpath + b"/"):
 
1428
                    count += 1
 
1429
                    self._index_del_entry(index, p)
 
1430
        else:
 
1431
            count = 1
 
1432
        self._versioned_dirs = None
 
1433
        return count
 
1434
 
 
1435
    def unversion(self, paths):
 
1436
        with self.lock_tree_write():
 
1437
            for path in paths:
 
1438
                if self._unversion_path(path) == 0:
 
1439
                    raise errors.NoSuchFile(path)
 
1440
            self._versioned_dirs = None
 
1441
            self.flush()
 
1442
 
 
1443
    def flush(self):
 
1444
        pass
 
1445
 
 
1446
    def update_basis_by_delta(self, revid, delta):
 
1447
        # TODO(jelmer): This shouldn't be called, it's inventory specific.
 
1448
        for (old_path, new_path, file_id, ie) in delta:
 
1449
            if old_path is not None:
 
1450
                (index, old_subpath) = self._lookup_index(
 
1451
                    encode_git_path(old_path))
 
1452
                if old_subpath in index:
 
1453
                    self._index_del_entry(index, old_subpath)
 
1454
                    self._versioned_dirs = None
 
1455
            if new_path is not None and ie.kind != 'directory':
 
1456
                self._index_add_entry(new_path, ie.kind)
 
1457
        self.flush()
 
1458
        self._set_merges_from_parent_ids([])
 
1459
 
 
1460
    def move(self, from_paths, to_dir=None, after=None):
 
1461
        rename_tuples = []
 
1462
        with self.lock_tree_write():
 
1463
            to_abs = self.abspath(to_dir)
 
1464
            if not os.path.isdir(to_abs):
 
1465
                raise errors.BzrMoveFailedError('', to_dir,
 
1466
                                                errors.NotADirectory(to_abs))
 
1467
 
 
1468
            for from_rel in from_paths:
 
1469
                from_tail = os.path.split(from_rel)[-1]
 
1470
                to_rel = os.path.join(to_dir, from_tail)
 
1471
                self.rename_one(from_rel, to_rel, after=after)
 
1472
                rename_tuples.append((from_rel, to_rel))
 
1473
            self.flush()
 
1474
            return rename_tuples
 
1475
 
 
1476
    def rename_one(self, from_rel, to_rel, after=None):
 
1477
        from_path = encode_git_path(from_rel)
 
1478
        to_rel, can_access = osutils.normalized_filename(to_rel)
 
1479
        if not can_access:
 
1480
            raise errors.InvalidNormalization(to_rel)
 
1481
        to_path = encode_git_path(to_rel)
 
1482
        with self.lock_tree_write():
 
1483
            if not after:
 
1484
                # Perhaps it's already moved?
 
1485
                after = (
 
1486
                    not self.has_filename(from_rel) and
 
1487
                    self.has_filename(to_rel) and
 
1488
                    not self.is_versioned(to_rel))
 
1489
            if after:
 
1490
                if not self.has_filename(to_rel):
 
1491
                    raise errors.BzrMoveFailedError(
 
1492
                        from_rel, to_rel, errors.NoSuchFile(to_rel))
 
1493
                if self.basis_tree().is_versioned(to_rel):
 
1494
                    raise errors.BzrMoveFailedError(
 
1495
                        from_rel, to_rel, errors.AlreadyVersionedError(to_rel))
 
1496
 
 
1497
                kind = self.kind(to_rel)
 
1498
            else:
 
1499
                try:
 
1500
                    to_kind = self.kind(to_rel)
 
1501
                except errors.NoSuchFile:
 
1502
                    exc_type = errors.BzrRenameFailedError
 
1503
                    to_kind = None
 
1504
                else:
 
1505
                    exc_type = errors.BzrMoveFailedError
 
1506
                if self.is_versioned(to_rel):
 
1507
                    raise exc_type(from_rel, to_rel,
 
1508
                                   errors.AlreadyVersionedError(to_rel))
 
1509
                if not self.has_filename(from_rel):
 
1510
                    raise errors.BzrMoveFailedError(
 
1511
                        from_rel, to_rel, errors.NoSuchFile(from_rel))
 
1512
                kind = self.kind(from_rel)
 
1513
                if not self.is_versioned(from_rel) and kind != 'directory':
 
1514
                    raise exc_type(from_rel, to_rel,
 
1515
                                   errors.NotVersionedError(from_rel))
 
1516
                if self.has_filename(to_rel):
 
1517
                    raise errors.RenameFailedFilesExist(
 
1518
                        from_rel, to_rel, errors.FileExists(to_rel))
 
1519
 
 
1520
                kind = self.kind(from_rel)
 
1521
 
 
1522
            if not after and kind != 'directory':
 
1523
                (index, from_subpath) = self._lookup_index(from_path)
 
1524
                if from_subpath not in index:
 
1525
                    # It's not a file
 
1526
                    raise errors.BzrMoveFailedError(
 
1527
                        from_rel, to_rel,
 
1528
                        errors.NotVersionedError(path=from_rel))
 
1529
 
 
1530
            if not after:
 
1531
                try:
 
1532
                    self._rename_one(from_rel, to_rel)
 
1533
                except OSError as e:
 
1534
                    if e.errno == errno.ENOENT:
 
1535
                        raise errors.BzrMoveFailedError(
 
1536
                            from_rel, to_rel, errors.NoSuchFile(to_rel))
 
1537
                    raise
 
1538
            if kind != 'directory':
 
1539
                (index, from_index_path) = self._lookup_index(from_path)
 
1540
                try:
 
1541
                    self._index_del_entry(index, from_path)
 
1542
                except KeyError:
 
1543
                    pass
 
1544
                self._index_add_entry(to_rel, kind)
 
1545
            else:
 
1546
                todo = [(p, i) for (p, i) in self._recurse_index_entries()
 
1547
                        if p.startswith(from_path + b'/')]
 
1548
                for child_path, child_value in todo:
 
1549
                    (child_to_index, child_to_index_path) = self._lookup_index(
 
1550
                        posixpath.join(to_path, posixpath.relpath(child_path, from_path)))
 
1551
                    child_to_index[child_to_index_path] = child_value
 
1552
                    # TODO(jelmer): Mark individual index as dirty
 
1553
                    self._index_dirty = True
 
1554
                    (child_from_index, child_from_index_path) = self._lookup_index(
 
1555
                        child_path)
 
1556
                    self._index_del_entry(
 
1557
                        child_from_index, child_from_index_path)
 
1558
 
 
1559
            self._versioned_dirs = None
 
1560
            self.flush()
 
1561
 
 
1562
    def find_related_paths_across_trees(self, paths, trees=[],
 
1563
                                        require_versioned=True):
 
1564
        if paths is None:
 
1565
            return None
 
1566
 
 
1567
        if require_versioned:
 
1568
            trees = [self] + (trees if trees is not None else [])
 
1569
            unversioned = set()
 
1570
            for p in paths:
 
1571
                for t in trees:
 
1572
                    if t.is_versioned(p):
 
1573
                        break
 
1574
                else:
 
1575
                    unversioned.add(p)
 
1576
            if unversioned:
 
1577
                raise errors.PathsNotVersionedError(unversioned)
 
1578
 
 
1579
        return filter(self.is_versioned, paths)
 
1580
 
 
1581
    def path_content_summary(self, path):
 
1582
        """See Tree.path_content_summary."""
 
1583
        try:
 
1584
            stat_result = self._lstat(path)
 
1585
        except OSError as e:
 
1586
            if getattr(e, 'errno', None) == errno.ENOENT:
 
1587
                # no file.
 
1588
                return ('missing', None, None, None)
 
1589
            # propagate other errors
 
1590
            raise
 
1591
        kind = mode_kind(stat_result.st_mode)
 
1592
        if kind == 'file':
 
1593
            return self._file_content_summary(path, stat_result)
 
1594
        elif kind == 'directory':
 
1595
            # perhaps it looks like a plain directory, but it's really a
 
1596
            # reference.
 
1597
            if self._directory_is_tree_reference(path):
 
1598
                kind = 'tree-reference'
 
1599
            return kind, None, None, None
 
1600
        elif kind == 'symlink':
 
1601
            target = osutils.readlink(self.abspath(path))
 
1602
            return ('symlink', None, None, target)
 
1603
        else:
 
1604
            return (kind, None, None, None)
 
1605
 
 
1606
    def stored_kind(self, relpath):
 
1607
        (index, index_path) = self._lookup_index(encode_git_path(relpath))
 
1608
        if index is None:
 
1609
            return kind
 
1610
        try:
 
1611
            mode = index[index_path].mode
 
1612
        except KeyError:
 
1613
            return kind
 
1614
        else:
 
1615
            if S_ISGITLINK(mode):
 
1616
                return 'tree-reference'
 
1617
            return 'directory'
 
1618
 
 
1619
    def kind(self, relpath):
 
1620
        kind = osutils.file_kind(self.abspath(relpath))
 
1621
        if kind == 'directory':
 
1622
            if self._directory_is_tree_reference(relpath):
 
1623
                return 'tree-reference'
 
1624
            return 'directory'
 
1625
        else:
 
1626
            return kind
 
1627
 
 
1628
    def _live_entry(self, relpath):
 
1629
        raise NotImplementedError(self._live_entry)
 
1630
 
 
1631
    def transform(self, pb=None):
 
1632
        from .transform import GitTreeTransform
 
1633
        return GitTreeTransform(self, pb=pb)
 
1634
 
 
1635
    def preview_transform(self, pb=None):
 
1636
        from .transform import GitTransformPreview
 
1637
        return GitTransformPreview(self, pb=pb)
 
1638
 
 
1639
 
 
1640
class InterToIndexGitTree(InterGitTrees):
 
1641
    """InterTree that works between a Git revision tree and an index."""
 
1642
 
 
1643
    def __init__(self, source, target):
 
1644
        super(InterToIndexGitTree, self).__init__(source, target)
 
1645
        if self.source.store == self.target.store:
 
1646
            self.store = self.source.store
 
1647
        else:
 
1648
            self.store = OverlayObjectStore(
 
1649
                [self.source.store, self.target.store])
 
1650
        self.rename_detector = RenameDetector(self.store)
 
1651
 
 
1652
    @classmethod
 
1653
    def is_compatible(cls, source, target):
 
1654
        return (isinstance(source, GitRevisionTree) and
 
1655
                isinstance(target, MutableGitIndexTree))
 
1656
 
 
1657
    def _iter_git_changes(self, want_unchanged=False, specific_files=None,
 
1658
                          require_versioned=False, extra_trees=None,
 
1659
                          want_unversioned=False, include_trees=True):
 
1660
        trees = [self.source]
 
1661
        if extra_trees is not None:
 
1662
            trees.extend(extra_trees)
 
1663
        if specific_files is not None:
 
1664
            specific_files = self.target.find_related_paths_across_trees(
 
1665
                specific_files, trees,
 
1666
                require_versioned=require_versioned)
 
1667
        # TODO(jelmer): Restrict to specific_files, for performance reasons.
 
1668
        with self.lock_read():
 
1669
            changes, target_extras = changes_between_git_tree_and_working_copy(
 
1670
                self.source.store, self.source.tree,
 
1671
                self.target, want_unchanged=want_unchanged,
 
1672
                want_unversioned=want_unversioned,
 
1673
                rename_detector=self.rename_detector,
 
1674
                include_trees=include_trees)
 
1675
            return changes, set(), target_extras
 
1676
 
 
1677
 
 
1678
_mod_tree.InterTree.register_optimiser(InterToIndexGitTree)
 
1679
 
 
1680
 
 
1681
class InterFromIndexGitTree(InterGitTrees):
 
1682
    """InterTree that works between a Git revision tree and an index."""
 
1683
 
 
1684
    def __init__(self, source, target):
 
1685
        super(InterFromIndexGitTree, self).__init__(source, target)
 
1686
        if self.source.store == self.target.store:
 
1687
            self.store = self.source.store
 
1688
        else:
 
1689
            self.store = OverlayObjectStore(
 
1690
                [self.source.store, self.target.store])
 
1691
        self.rename_detector = RenameDetector(self.store)
 
1692
 
 
1693
    @classmethod
 
1694
    def is_compatible(cls, source, target):
 
1695
        return (isinstance(target, GitRevisionTree) and
 
1696
                isinstance(source, MutableGitIndexTree))
 
1697
 
 
1698
    def _iter_git_changes(self, want_unchanged=False, specific_files=None,
 
1699
                          require_versioned=False, extra_trees=None,
 
1700
                          want_unversioned=False, include_trees=True):
 
1701
        trees = [self.source]
 
1702
        if extra_trees is not None:
 
1703
            trees.extend(extra_trees)
 
1704
        if specific_files is not None:
 
1705
            specific_files = self.target.find_related_paths_across_trees(
 
1706
                specific_files, trees,
 
1707
                require_versioned=require_versioned)
 
1708
        # TODO(jelmer): Restrict to specific_files, for performance reasons.
 
1709
        with self.lock_read():
 
1710
            from_tree_sha, extras = snapshot_workingtree(self.source, want_unversioned=want_unversioned)
 
1711
            return tree_changes(
 
1712
                self.store, from_tree_sha, self.target.tree,
 
1713
                include_trees=include_trees,
 
1714
                rename_detector=self.rename_detector,
 
1715
                want_unchanged=want_unchanged, change_type_same=True), extras
 
1716
 
 
1717
 
 
1718
_mod_tree.InterTree.register_optimiser(InterFromIndexGitTree)
 
1719
 
 
1720
 
 
1721
class InterIndexGitTree(InterGitTrees):
 
1722
    """InterTree that works between a Git revision tree and an index."""
 
1723
 
 
1724
    def __init__(self, source, target):
 
1725
        super(InterIndexGitTree, self).__init__(source, target)
 
1726
        if self.source.store == self.target.store:
 
1727
            self.store = self.source.store
 
1728
        else:
 
1729
            self.store = OverlayObjectStore(
 
1730
                [self.source.store, self.target.store])
 
1731
        self.rename_detector = RenameDetector(self.store)
 
1732
 
 
1733
    @classmethod
 
1734
    def is_compatible(cls, source, target):
 
1735
        return (isinstance(target, MutableGitIndexTree) and
 
1736
                isinstance(source, MutableGitIndexTree))
 
1737
 
 
1738
    def _iter_git_changes(self, want_unchanged=False, specific_files=None,
 
1739
                          require_versioned=False, extra_trees=None,
 
1740
                          want_unversioned=False, include_trees=True):
 
1741
        trees = [self.source]
 
1742
        if extra_trees is not None:
 
1743
            trees.extend(extra_trees)
 
1744
        if specific_files is not None:
 
1745
            specific_files = self.target.find_related_paths_across_trees(
 
1746
                specific_files, trees,
 
1747
                require_versioned=require_versioned)
 
1748
        # TODO(jelmer): Restrict to specific_files, for performance reasons.
 
1749
        with self.lock_read():
 
1750
            from_tree_sha, from_extras = snapshot_workingtree(
 
1751
                self.source, want_unversioned=want_unversioned)
 
1752
            to_tree_sha, to_extras = snapshot_workingtree(
 
1753
                self.target, want_unversioned=want_unversioned)
 
1754
            changes = tree_changes(
 
1755
                self.store, from_tree_sha, to_tree_sha,
 
1756
                include_trees=include_trees,
 
1757
                rename_detector=self.rename_detector,
 
1758
                want_unchanged=want_unchanged, change_type_same=True)
 
1759
            return changes, from_extras, to_extras
 
1760
 
 
1761
 
 
1762
_mod_tree.InterTree.register_optimiser(InterIndexGitTree)
 
1763
 
 
1764
 
 
1765
def snapshot_workingtree(target, want_unversioned=False):
 
1766
    extras = set()
 
1767
    blobs = {}
 
1768
    # Report dirified directories to commit_tree first, so that they can be
 
1769
    # replaced with non-empty directories if they have contents.
 
1770
    dirified = []
 
1771
    trust_executable = target._supports_executable()
 
1772
    for path, index_entry in target._recurse_index_entries():
 
1773
        try:
 
1774
            live_entry = target._live_entry(path)
 
1775
        except EnvironmentError as e:
 
1776
            if e.errno == errno.ENOENT:
 
1777
                # Entry was removed; keep it listed, but mark it as gone.
 
1778
                blobs[path] = (ZERO_SHA, 0)
 
1779
            else:
 
1780
                raise
 
1781
        else:
 
1782
            if live_entry is None:
 
1783
                # Entry was turned into a directory.
 
1784
                # Maybe it's just a submodule that's not checked out?
 
1785
                if S_ISGITLINK(index_entry.mode):
 
1786
                    blobs[path] = (index_entry.sha, index_entry.mode)
 
1787
                else:
 
1788
                    dirified.append((path, Tree().id, stat.S_IFDIR))
 
1789
                    target.store.add_object(Tree())
 
1790
            else:
 
1791
                mode = live_entry.mode
 
1792
                if not trust_executable:
 
1793
                    if mode_is_executable(index_entry.mode):
 
1794
                        mode |= 0o111
 
1795
                    else:
 
1796
                        mode &= ~0o111
 
1797
                if live_entry.sha != index_entry.sha:
 
1798
                    rp = decode_git_path(path)
 
1799
                    if stat.S_ISREG(live_entry.mode):
 
1800
                        blob = Blob()
 
1801
                        with target.get_file(rp) as f:
 
1802
                            blob.data = f.read()
 
1803
                    elif stat.S_ISLNK(live_entry.mode):
 
1804
                        blob = Blob()
 
1805
                        blob.data = target.get_symlink_target(rp).encode(osutils._fs_enc)
 
1806
                    else:
 
1807
                        blob = None
 
1808
                    if blob is not None:
 
1809
                        target.store.add_object(blob)
 
1810
                blobs[path] = (live_entry.sha, cleanup_mode(live_entry.mode))
 
1811
    if want_unversioned:
 
1812
        for e in target._iter_files_recursive(include_dirs=False):
 
1813
            try:
 
1814
                e, accessible = osutils.normalized_filename(e)
 
1815
            except UnicodeDecodeError:
 
1816
                raise errors.BadFilenameEncoding(
 
1817
                    e, osutils._fs_enc)
 
1818
            np = encode_git_path(e)
 
1819
            if np in blobs:
 
1820
                continue
 
1821
            st = target._lstat(e)
 
1822
            if stat.S_ISDIR(st.st_mode):
 
1823
                blob = Tree()
 
1824
            elif stat.S_ISREG(st.st_mode) or stat.S_ISLNK(st.st_mode):
 
1825
                blob = blob_from_path_and_stat(
 
1826
                    target.abspath(e).encode(osutils._fs_enc), st)
 
1827
            else:
 
1828
                continue
 
1829
            target.store.add_object(blob)
 
1830
            blobs[np] = (blob.id, cleanup_mode(st.st_mode))
 
1831
            extras.add(np)
 
1832
    return commit_tree(
 
1833
        target.store, dirified + [(p, s, m) for (p, (s, m)) in blobs.items()]), extras
 
1834
 
 
1835
 
 
1836
def changes_between_git_tree_and_working_copy(source_store, from_tree_sha, target,
 
1837
                                              want_unchanged=False,
 
1838
                                              want_unversioned=False,
 
1839
                                              rename_detector=None,
 
1840
                                              include_trees=True):
 
1841
    """Determine the changes between a git tree and a working tree with index.
 
1842
 
 
1843
    """
 
1844
    to_tree_sha, extras = snapshot_workingtree(target, want_unversioned=want_unversioned)
 
1845
    store = OverlayObjectStore([source_store, target.store])
 
1846
    return tree_changes(
 
1847
        store, from_tree_sha, to_tree_sha, include_trees=include_trees,
 
1848
        rename_detector=rename_detector,
 
1849
        want_unchanged=want_unchanged, change_type_same=True), extras