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  • Committer: Jelmer Vernooij
  • Date: 2018-06-29 21:21:43 UTC
  • mto: This revision was merged to the branch mainline in revision 7001.
  • Revision ID: jelmer@jelmer.uk-20180629212143-l5iyocbkjvwva1vm
Fix --list.

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