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  • Committer: Jelmer Vernooij
  • Date: 2018-06-14 17:59:16 UTC
  • mto: This revision was merged to the branch mainline in revision 7065.
  • Revision ID: jelmer@jelmer.uk-20180614175916-a2e2xh5k533guq1x
Move breezy.plugins.git to breezy.git.

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breezy/git/tree.py
 
1
# Copyright (C) 2009-2018 Jelmer Vernooij <jelmer@jelmer.uk>
 
2
#
 
3
# This program is free software; you can redistribute it and/or modify
 
4
# it under the terms of the GNU General Public License as published by
 
5
# the Free Software Foundation; either version 2 of the License, or
 
6
# (at your option) any later version.
 
7
#
 
8
# This program is distributed in the hope that it will be useful,
 
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
 
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
11
# GNU General Public License for more details.
 
12
#
 
13
# You should have received a copy of the GNU General Public License
 
14
# along with this program; if not, write to the Free Software
 
15
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 
16
 
 
17
 
 
18
"""Git Trees."""
 
19
 
 
20
from __future__ import absolute_import
 
21
 
 
22
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
 
 
63
from .mapping import (
 
64
    mode_is_executable,
 
65
    mode_kind,
 
66
    GitFileIdMap,
 
67
    default_mapping,
 
68
    )
 
69
 
 
70
 
 
71
class GitTreeDirectory(_mod_tree.TreeDirectory):
 
72
 
 
73
    __slots__ = ['file_id', 'name', 'parent_id', 'children']
 
74
 
 
75
    def __init__(self, file_id, name, parent_id):
 
76
        self.file_id = file_id
 
77
        self.name = name
 
78
        self.parent_id = parent_id
 
79
        # TODO(jelmer)
 
80
        self.children = {}
 
81
 
 
82
    @property
 
83
    def kind(self):
 
84
        return 'directory'
 
85
 
 
86
    @property
 
87
    def executable(self):
 
88
        return False
 
89
 
 
90
    def copy(self):
 
91
        return self.__class__(
 
92
            self.file_id, self.name, self.parent_id)
 
93
 
 
94
    def __repr__(self):
 
95
        return "%s(file_id=%r, name=%r, parent_id=%r)" % (
 
96
            self.__class__.__name__, self.file_id, self.name,
 
97
            self.parent_id)
 
98
 
 
99
    def __eq__(self, other):
 
100
        return (self.kind == other.kind and
 
101
                self.file_id == other.file_id and
 
102
                self.name == other.name and
 
103
                self.parent_id == other.parent_id)
 
104
 
 
105
 
 
106
class GitTreeFile(_mod_tree.TreeFile):
 
107
 
 
108
    __slots__ = ['file_id', 'name', 'parent_id', 'text_size', 'text_sha1',
 
109
                 'executable']
 
110
 
 
111
    def __init__(self, file_id, name, parent_id, text_size=None,
 
112
                 text_sha1=None, executable=None):
 
113
        self.file_id = file_id
 
114
        self.name = name
 
115
        self.parent_id = parent_id
 
116
        self.text_size = text_size
 
117
        self.text_sha1 = text_sha1
 
118
        self.executable = executable
 
119
 
 
120
    @property
 
121
    def kind(self):
 
122
        return 'file'
 
123
 
 
124
    def __eq__(self, other):
 
125
        return (self.kind == other.kind and
 
126
                self.file_id == other.file_id and
 
127
                self.name == other.name and
 
128
                self.parent_id == other.parent_id and
 
129
                self.text_sha1 == other.text_sha1 and
 
130
                self.text_size == other.text_size and
 
131
                self.executable == other.executable)
 
132
 
 
133
    def __repr__(self):
 
134
        return "%s(file_id=%r, name=%r, parent_id=%r, text_size=%r, text_sha1=%r, executable=%r)" % (
 
135
            type(self).__name__, self.file_id, self.name, self.parent_id,
 
136
            self.text_size, self.text_sha1, self.executable)
 
137
 
 
138
    def copy(self):
 
139
        ret = self.__class__(
 
140
                self.file_id, self.name, self.parent_id)
 
141
        ret.text_sha1 = self.text_sha1
 
142
        ret.text_size = self.text_size
 
143
        ret.executable = self.executable
 
144
        return ret
 
145
 
 
146
 
 
147
class GitTreeSymlink(_mod_tree.TreeLink):
 
148
 
 
149
    __slots__ = ['file_id', 'name', 'parent_id', 'symlink_target']
 
150
 
 
151
    def __init__(self, file_id, name, parent_id,
 
152
                 symlink_target=None):
 
153
        self.file_id = file_id
 
154
        self.name = name
 
155
        self.parent_id = parent_id
 
156
        self.symlink_target = symlink_target
 
157
 
 
158
    @property
 
159
    def kind(self):
 
160
        return 'symlink'
 
161
 
 
162
    @property
 
163
    def executable(self):
 
164
        return False
 
165
 
 
166
    @property
 
167
    def text_size(self):
 
168
        return None
 
169
 
 
170
    def __repr__(self):
 
171
        return "%s(file_id=%r, name=%r, parent_id=%r, symlink_target=%r)" % (
 
172
            type(self).__name__, self.file_id, self.name, self.parent_id,
 
173
            self.symlink_target)
 
174
 
 
175
    def __eq__(self, other):
 
176
        return (self.kind == other.kind and
 
177
                self.file_id == other.file_id and
 
178
                self.name == other.name and
 
179
                self.parent_id == other.parent_id and
 
180
                self.symlink_target == other.symlink_target)
 
181
 
 
182
    def copy(self):
 
183
        return self.__class__(
 
184
                self.file_id, self.name, self.parent_id,
 
185
                self.symlink_target)
 
186
 
 
187
 
 
188
class GitTreeSubmodule(_mod_tree.TreeLink):
 
189
 
 
190
    __slots__ = ['file_id', 'name', 'parent_id', 'reference_revision']
 
191
 
 
192
    def __init__(self, file_id, name, parent_id, reference_revision=None):
 
193
        self.file_id = file_id
 
194
        self.name = name
 
195
        self.parent_id = parent_id
 
196
        self.reference_revision = reference_revision
 
197
 
 
198
    @property
 
199
    def kind(self):
 
200
        return 'tree-reference'
 
201
 
 
202
    def __repr__(self):
 
203
        return "%s(file_id=%r, name=%r, parent_id=%r, reference_revision=%r)" % (
 
204
            type(self).__name__, self.file_id, self.name, self.parent_id,
 
205
            self.reference_revision)
 
206
 
 
207
    def __eq__(self, other):
 
208
        return (self.kind == other.kind and
 
209
                self.file_id == other.file_id and
 
210
                self.name == other.name and
 
211
                self.parent_id == other.parent_id and
 
212
                self.reference_revision == other.reference_revision)
 
213
 
 
214
    def copy(self):
 
215
        return self.__class__(
 
216
                self.file_id, self.name, self.parent_id,
 
217
                self.reference_revision)
 
218
 
 
219
 
 
220
entry_factory = {
 
221
    'directory': GitTreeDirectory,
 
222
    'file': GitTreeFile,
 
223
    'symlink': GitTreeSymlink,
 
224
    'tree-reference': GitTreeSubmodule,
 
225
    }
 
226
 
 
227
 
 
228
def ensure_normalized_path(path):
 
229
    """Check whether path is normalized.
 
230
 
 
231
    :raises InvalidNormalization: When path is not normalized, and cannot be
 
232
        accessed on this platform by the normalized path.
 
233
    :return: The NFC normalised version of path.
 
234
    """
 
235
    norm_path, can_access = osutils.normalized_filename(path)
 
236
    if norm_path != path:
 
237
        if can_access:
 
238
            return norm_path
 
239
        else:
 
240
            raise errors.InvalidNormalization(path)
 
241
    return path
 
242
 
 
243
 
 
244
class GitRevisionTree(revisiontree.RevisionTree):
 
245
    """Revision tree implementation based on Git objects."""
 
246
 
 
247
    def __init__(self, repository, revision_id):
 
248
        self._revision_id = revision_id
 
249
        self._repository = repository
 
250
        self.store = repository._git.object_store
 
251
        if not isinstance(revision_id, bytes):
 
252
            raise TypeError(revision_id)
 
253
        self.commit_id, self.mapping = repository.lookup_bzr_revision_id(revision_id)
 
254
        if revision_id == NULL_REVISION:
 
255
            self.tree = None
 
256
            self.mapping = default_mapping
 
257
            self._fileid_map = GitFileIdMap(
 
258
                {},
 
259
                default_mapping)
 
260
        else:
 
261
            try:
 
262
                commit = self.store[self.commit_id]
 
263
            except KeyError:
 
264
                raise errors.NoSuchRevision(repository, revision_id)
 
265
            self.tree = commit.tree
 
266
            self._fileid_map = self.mapping.get_fileid_map(self.store.__getitem__, self.tree)
 
267
 
 
268
    def _get_nested_repository(self, path):
 
269
        nested_repo_transport = self._repository.user_transport.clone(path)
 
270
        nested_controldir = _mod_controldir.ControlDir.open_from_transport(nested_repo_transport)
 
271
        return nested_controldir.find_repository()
 
272
 
 
273
    def supports_rename_tracking(self):
 
274
        return False
 
275
 
 
276
    def get_file_revision(self, path, file_id=None):
 
277
        change_scanner = self._repository._file_change_scanner
 
278
        if self.commit_id == ZERO_SHA:
 
279
            return NULL_REVISION
 
280
        (path, commit_id) = change_scanner.find_last_change_revision(
 
281
            path.encode('utf-8'), self.commit_id)
 
282
        return self._repository.lookup_foreign_revision_id(commit_id, self.mapping)
 
283
 
 
284
    def get_file_mtime(self, path, file_id=None):
 
285
        try:
 
286
            revid = self.get_file_revision(path, file_id)
 
287
        except KeyError:
 
288
            raise _mod_tree.FileTimestampUnavailable(path)
 
289
        try:
 
290
            rev = self._repository.get_revision(revid)
 
291
        except errors.NoSuchRevision:
 
292
            raise _mod_tree.FileTimestampUnavailable(path)
 
293
        return rev.timestamp
 
294
 
 
295
    def id2path(self, file_id):
 
296
        try:
 
297
            path = self._fileid_map.lookup_path(file_id)
 
298
        except ValueError:
 
299
            raise errors.NoSuchId(self, file_id)
 
300
        path = path.decode('utf-8')
 
301
        if self.is_versioned(path):
 
302
            return path
 
303
        raise errors.NoSuchId(self, file_id)
 
304
 
 
305
    def is_versioned(self, path):
 
306
        return self.has_filename(path)
 
307
 
 
308
    def path2id(self, path):
 
309
        if self.mapping.is_special_file(path):
 
310
            return None
 
311
        return self._fileid_map.lookup_file_id(path.encode('utf-8'))
 
312
 
 
313
    def all_file_ids(self):
 
314
        return set(self._fileid_map.all_file_ids())
 
315
 
 
316
    def all_versioned_paths(self):
 
317
        ret = set()
 
318
        todo = set([(store, '', self.tree)])
 
319
        while todo:
 
320
            (store, path, tree_id) = todo.pop()
 
321
            if tree_id is None:
 
322
                continue
 
323
            tree = store[tree_id]
 
324
            for name, mode, hexsha in tree.items():
 
325
                subpath = posixpath.join(path, name)
 
326
                if stat.S_ISDIR(mode):
 
327
                    todo.add((store, subpath, hexsha))
 
328
                else:
 
329
                    ret.add(subpath)
 
330
        return ret
 
331
 
 
332
    def get_root_id(self):
 
333
        if self.tree is None:
 
334
            return None
 
335
        return self.path2id("")
 
336
 
 
337
    def has_or_had_id(self, file_id):
 
338
        try:
 
339
            path = self.id2path(file_id)
 
340
        except errors.NoSuchId:
 
341
            return False
 
342
        return True
 
343
 
 
344
    def has_id(self, file_id):
 
345
        try:
 
346
            path = self.id2path(file_id)
 
347
        except errors.NoSuchId:
 
348
            return False
 
349
        return self.has_filename(path)
 
350
 
 
351
    def _lookup_path(self, path):
 
352
        if self.tree is None:
 
353
            raise errors.NoSuchFile(path)
 
354
        try:
 
355
            (mode, hexsha) = tree_lookup_path(self.store.__getitem__, self.tree,
 
356
                path.encode('utf-8'))
 
357
        except KeyError:
 
358
            raise errors.NoSuchFile(self, path)
 
359
        else:
 
360
            return (self.store, mode, hexsha)
 
361
 
 
362
    def is_executable(self, path, file_id=None):
 
363
        (store, mode, hexsha) = self._lookup_path(path)
 
364
        if mode is None:
 
365
            # the tree root is a directory
 
366
            return False
 
367
        return mode_is_executable(mode)
 
368
 
 
369
    def kind(self, path, file_id=None):
 
370
        (store, mode, hexsha) = self._lookup_path(path)
 
371
        if mode is None:
 
372
            # the tree root is a directory
 
373
            return "directory"
 
374
        return mode_kind(mode)
 
375
 
 
376
    def has_filename(self, path):
 
377
        try:
 
378
            self._lookup_path(path)
 
379
        except errors.NoSuchFile:
 
380
            return False
 
381
        else:
 
382
            return True
 
383
 
 
384
    def list_files(self, include_root=False, from_dir=None, recursive=True):
 
385
        if self.tree is None:
 
386
            return
 
387
        if from_dir is None:
 
388
            from_dir = u""
 
389
        (store, mode, hexsha) = self._lookup_path(from_dir)
 
390
        if mode is None: # Root
 
391
            root_ie = self._get_dir_ie(b"", None)
 
392
        else:
 
393
            parent_path = posixpath.dirname(from_dir.encode("utf-8"))
 
394
            parent_id = self._fileid_map.lookup_file_id(parent_path)
 
395
            if mode_kind(mode) == 'directory':
 
396
                root_ie = self._get_dir_ie(from_dir.encode("utf-8"), parent_id)
 
397
            else:
 
398
                root_ie = self._get_file_ie(store, from_dir.encode("utf-8"),
 
399
                    posixpath.basename(from_dir), mode, hexsha)
 
400
        if from_dir != "" or include_root:
 
401
            yield (from_dir, "V", root_ie.kind, root_ie.file_id, root_ie)
 
402
        todo = set()
 
403
        if root_ie.kind == 'directory':
 
404
            todo.add((store, from_dir.encode("utf-8"), hexsha, root_ie.file_id))
 
405
        while todo:
 
406
            (store, path, hexsha, parent_id) = todo.pop()
 
407
            tree = store[hexsha]
 
408
            for name, mode, hexsha in tree.iteritems():
 
409
                if self.mapping.is_special_file(name):
 
410
                    continue
 
411
                child_path = posixpath.join(path, name)
 
412
                if stat.S_ISDIR(mode):
 
413
                    ie = self._get_dir_ie(child_path, parent_id)
 
414
                    if recursive:
 
415
                        todo.add((store, child_path, hexsha, ie.file_id))
 
416
                else:
 
417
                    ie = self._get_file_ie(store, child_path, name, mode, hexsha, parent_id)
 
418
                yield child_path.decode('utf-8'), "V", ie.kind, ie.file_id, ie
 
419
 
 
420
    def _get_file_ie(self, store, path, name, mode, hexsha, parent_id):
 
421
        if type(path) is not bytes:
 
422
            raise TypeError(path)
 
423
        if type(name) is not bytes:
 
424
            raise TypeError(name)
 
425
        kind = mode_kind(mode)
 
426
        file_id = self._fileid_map.lookup_file_id(path)
 
427
        ie = entry_factory[kind](file_id, name.decode("utf-8"), parent_id)
 
428
        if kind == 'symlink':
 
429
            ie.symlink_target = store[hexsha].data.decode('utf-8')
 
430
        elif kind == 'tree-reference':
 
431
            ie.reference_revision = self.mapping.revision_id_foreign_to_bzr(hexsha)
 
432
        else:
 
433
            data = store[hexsha].data
 
434
            ie.text_sha1 = osutils.sha_string(data)
 
435
            ie.text_size = len(data)
 
436
            ie.executable = mode_is_executable(mode)
 
437
        return ie
 
438
 
 
439
    def _get_dir_ie(self, path, parent_id):
 
440
        file_id = self._fileid_map.lookup_file_id(path)
 
441
        return GitTreeDirectory(file_id,
 
442
            posixpath.basename(path).decode("utf-8"), parent_id)
 
443
 
 
444
    def iter_child_entries(self, path, file_id=None):
 
445
        (store, mode, tree_sha) = self._lookup_path(path)
 
446
 
 
447
        if not stat.S_ISDIR(mode):
 
448
            return
 
449
 
 
450
        encoded_path = path.encode('utf-8')
 
451
        file_id = self.path2id(path)
 
452
        tree = store[tree_sha]
 
453
        for name, mode, hexsha in tree.iteritems():
 
454
            if self.mapping.is_special_file(name):
 
455
                continue
 
456
            child_path = posixpath.join(encoded_path, name)
 
457
            if stat.S_ISDIR(mode):
 
458
                yield self._get_dir_ie(child_path, file_id)
 
459
            else:
 
460
                yield self._get_file_ie(store, child_path, name, mode, hexsha,
 
461
                                        file_id)
 
462
 
 
463
    def iter_entries_by_dir(self, specific_files=None, yield_parents=False):
 
464
        if self.tree is None:
 
465
            return
 
466
        if yield_parents:
 
467
            # TODO(jelmer): Support yield parents
 
468
            raise NotImplementedError
 
469
        if specific_files is not None:
 
470
            if specific_files in ([""], []):
 
471
                specific_files = None
 
472
            else:
 
473
                specific_files = set([p.encode('utf-8') for p in specific_files])
 
474
        todo = set([(self.store, "", self.tree, None)])
 
475
        while todo:
 
476
            store, path, tree_sha, parent_id = todo.pop()
 
477
            ie = self._get_dir_ie(path, parent_id)
 
478
            if specific_files is None or path in specific_files:
 
479
                yield path.decode("utf-8"), ie
 
480
            tree = store[tree_sha]
 
481
            for name, mode, hexsha in tree.iteritems():
 
482
                if self.mapping.is_special_file(name):
 
483
                    continue
 
484
                child_path = posixpath.join(path, name)
 
485
                if stat.S_ISDIR(mode):
 
486
                    if (specific_files is None or
 
487
                        any(filter(lambda p: p.startswith(child_path), specific_files))):
 
488
                        todo.add((store, child_path, hexsha, ie.file_id))
 
489
                elif specific_files is None or child_path in specific_files:
 
490
                    yield (child_path.decode("utf-8"),
 
491
                            self._get_file_ie(store, child_path, name, mode, hexsha,
 
492
                           ie.file_id))
 
493
 
 
494
    def get_revision_id(self):
 
495
        """See RevisionTree.get_revision_id."""
 
496
        return self._revision_id
 
497
 
 
498
    def get_file_sha1(self, path, file_id=None, stat_value=None):
 
499
        if self.tree is None:
 
500
            raise errors.NoSuchFile(path)
 
501
        return osutils.sha_string(self.get_file_text(path, file_id))
 
502
 
 
503
    def get_file_verifier(self, path, file_id=None, stat_value=None):
 
504
        (store, mode, hexsha) = self._lookup_path(path)
 
505
        return ("GIT", hexsha)
 
506
 
 
507
    def get_file_text(self, path, file_id=None):
 
508
        """See RevisionTree.get_file_text."""
 
509
        (store, mode, hexsha) = self._lookup_path(path)
 
510
        if stat.S_ISREG(mode):
 
511
            return store[hexsha].data
 
512
        else:
 
513
            return b""
 
514
 
 
515
    def get_symlink_target(self, path, file_id=None):
 
516
        """See RevisionTree.get_symlink_target."""
 
517
        (store, mode, hexsha) = self._lookup_path(path)
 
518
        if stat.S_ISLNK(mode):
 
519
            return store[hexsha].data.decode('utf-8')
 
520
        else:
 
521
            return None
 
522
 
 
523
    def get_reference_revision(self, path, file_id=None):
 
524
        """See RevisionTree.get_symlink_target."""
 
525
        (store, mode, hexsha) = self._lookup_path(path)
 
526
        if S_ISGITLINK(mode):
 
527
            nested_repo = self._get_nested_repository(path)
 
528
            return nested_repo.lookup_foreign_revision_id(hexsha)
 
529
        else:
 
530
            return None
 
531
 
 
532
    def _comparison_data(self, entry, path):
 
533
        if entry is None:
 
534
            return None, False, None
 
535
        return entry.kind, entry.executable, None
 
536
 
 
537
    def path_content_summary(self, path):
 
538
        """See Tree.path_content_summary."""
 
539
        try:
 
540
            (store, mode, hexsha) = self._lookup_path(path)
 
541
        except errors.NoSuchFile:
 
542
            return ('missing', None, None, None)
 
543
        kind = mode_kind(mode)
 
544
        if kind == 'file':
 
545
            executable = mode_is_executable(mode)
 
546
            contents = store[hexsha].data
 
547
            return (kind, len(contents), executable, osutils.sha_string(contents))
 
548
        elif kind == 'symlink':
 
549
            return (kind, None, None, store[hexsha].data)
 
550
        elif kind == 'tree-reference':
 
551
            nested_repo = self._get_nested_repository(path)
 
552
            return (kind, None, None,
 
553
                    nested_repo.lookup_foreign_revision_id(hexsha))
 
554
        else:
 
555
            return (kind, None, None, None)
 
556
 
 
557
    def find_related_paths_across_trees(self, paths, trees=[],
 
558
            require_versioned=True):
 
559
        if paths is None:
 
560
            return None
 
561
        if require_versioned:
 
562
            trees = [self] + (trees if trees is not None else [])
 
563
            unversioned = set()
 
564
            for p in paths:
 
565
                for t in trees:
 
566
                    if t.is_versioned(p):
 
567
                        break
 
568
                else:
 
569
                    unversioned.add(p)
 
570
            if unversioned:
 
571
                raise errors.PathsNotVersionedError(unversioned)
 
572
        return filter(self.is_versioned, paths)
 
573
 
 
574
    def _iter_tree_contents(self, include_trees=False):
 
575
        if self.tree is None:
 
576
            return iter([])
 
577
        return self.store.iter_tree_contents(
 
578
                self.tree, include_trees=include_trees)
 
579
 
 
580
    def annotate_iter(self, path, file_id=None,
 
581
                      default_revision=CURRENT_REVISION):
 
582
        """Return an iterator of revision_id, line tuples.
 
583
 
 
584
        For working trees (and mutable trees in general), the special
 
585
        revision_id 'current:' will be used for lines that are new in this
 
586
        tree, e.g. uncommitted changes.
 
587
        :param file_id: The file to produce an annotated version from
 
588
        :param default_revision: For lines that don't match a basis, mark them
 
589
            with this revision id. Not all implementations will make use of
 
590
            this value.
 
591
        """
 
592
        with self.lock_read():
 
593
            # Now we have the parents of this content
 
594
            from breezy.annotate import Annotator
 
595
            from .annotate import AnnotateProvider
 
596
            annotator = Annotator(AnnotateProvider(
 
597
                self._repository._file_change_scanner))
 
598
            this_key = (path, self.get_file_revision(path))
 
599
            annotations = [(key[-1], line)
 
600
                           for key, line in annotator.annotate_flat(this_key)]
 
601
            return annotations
 
602
 
 
603
 
 
604
def tree_delta_from_git_changes(changes, mapping,
 
605
        fileid_maps, specific_files=None,
 
606
        require_versioned=False, include_root=False,
 
607
        target_extras=None):
 
608
    """Create a TreeDelta from two git trees.
 
609
 
 
610
    source and target are iterators over tuples with:
 
611
        (filename, sha, mode)
 
612
    """
 
613
    (old_fileid_map, new_fileid_map) = fileid_maps
 
614
    if target_extras is None:
 
615
        target_extras = set()
 
616
    ret = delta.TreeDelta()
 
617
    for (oldpath, newpath), (oldmode, newmode), (oldsha, newsha) in changes:
 
618
        if newpath == u'' and not include_root:
 
619
            continue
 
620
        if not (specific_files is None or
 
621
                (oldpath is not None and osutils.is_inside_or_parent_of_any(specific_files, oldpath)) or
 
622
                (newpath is not None and osutils.is_inside_or_parent_of_any(specific_files, newpath))):
 
623
            continue
 
624
        if mapping.is_special_file(oldpath):
 
625
            oldpath = None
 
626
        if mapping.is_special_file(newpath):
 
627
            newpath = None
 
628
        if oldpath is None and newpath is None:
 
629
            continue
 
630
        if oldpath is None:
 
631
            if newpath in target_extras:
 
632
                ret.unversioned.append(
 
633
                    (osutils.normalized_filename(newpath)[0], None, mode_kind(newmode)))
 
634
            else:
 
635
                file_id = new_fileid_map.lookup_file_id(newpath)
 
636
                ret.added.append((newpath.decode('utf-8'), file_id, mode_kind(newmode)))
 
637
        elif newpath is None or newmode == 0:
 
638
            file_id = old_fileid_map.lookup_file_id(oldpath)
 
639
            ret.removed.append((oldpath.decode('utf-8'), file_id, mode_kind(oldmode)))
 
640
        elif oldpath != newpath:
 
641
            file_id = old_fileid_map.lookup_file_id(oldpath)
 
642
            ret.renamed.append(
 
643
                (oldpath.decode('utf-8'), newpath.decode('utf-8'), file_id,
 
644
                mode_kind(newmode), (oldsha != newsha),
 
645
                (oldmode != newmode)))
 
646
        elif mode_kind(oldmode) != mode_kind(newmode):
 
647
            file_id = new_fileid_map.lookup_file_id(newpath)
 
648
            ret.kind_changed.append(
 
649
                (newpath.decode('utf-8'), file_id, mode_kind(oldmode),
 
650
                mode_kind(newmode)))
 
651
        elif oldsha != newsha or oldmode != newmode:
 
652
            if stat.S_ISDIR(oldmode) and stat.S_ISDIR(newmode):
 
653
                continue
 
654
            file_id = new_fileid_map.lookup_file_id(newpath)
 
655
            ret.modified.append(
 
656
                (newpath.decode('utf-8'), file_id, mode_kind(newmode),
 
657
                (oldsha != newsha), (oldmode != newmode)))
 
658
        else:
 
659
            file_id = new_fileid_map.lookup_file_id(newpath)
 
660
            ret.unchanged.append((newpath.decode('utf-8'), file_id, mode_kind(newmode)))
 
661
 
 
662
    return ret
 
663
 
 
664
 
 
665
def changes_from_git_changes(changes, mapping, specific_files=None, include_unchanged=False,
 
666
                             target_extras=None):
 
667
    """Create a iter_changes-like generator from a git stream.
 
668
 
 
669
    source and target are iterators over tuples with:
 
670
        (filename, sha, mode)
 
671
    """
 
672
    if target_extras is None:
 
673
        target_extras = set()
 
674
    for (oldpath, newpath), (oldmode, newmode), (oldsha, newsha) in changes:
 
675
        if not (specific_files is None or
 
676
                (oldpath is not None and osutils.is_inside_or_parent_of_any(specific_files, oldpath)) or
 
677
                (newpath is not None and osutils.is_inside_or_parent_of_any(specific_files, newpath))):
 
678
            continue
 
679
        path = (oldpath, newpath)
 
680
        if oldpath is not None and mapping.is_special_file(oldpath):
 
681
            continue
 
682
        if newpath is not None and mapping.is_special_file(newpath):
 
683
            continue
 
684
        if oldpath is None:
 
685
            fileid = mapping.generate_file_id(newpath)
 
686
            oldexe = None
 
687
            oldkind = None
 
688
            oldname = None
 
689
            oldparent = None
 
690
            oldversioned = False
 
691
        else:
 
692
            oldversioned = True
 
693
            oldpath = oldpath.decode("utf-8")
 
694
            if oldmode:
 
695
                oldexe = mode_is_executable(oldmode)
 
696
                oldkind = mode_kind(oldmode)
 
697
            else:
 
698
                oldexe = False
 
699
                oldkind = None
 
700
            if oldpath == u'':
 
701
                oldparent = None
 
702
                oldname = ''
 
703
            else:
 
704
                (oldparentpath, oldname) = osutils.split(oldpath)
 
705
                oldparent = mapping.generate_file_id(oldparentpath)
 
706
            fileid = mapping.generate_file_id(oldpath)
 
707
        if newpath is None:
 
708
            newexe = None
 
709
            newkind = None
 
710
            newname = None
 
711
            newparent = None
 
712
            newversioned = False
 
713
        else:
 
714
            newversioned = (newpath not in target_extras)
 
715
            if newmode:
 
716
                newexe = mode_is_executable(newmode)
 
717
                newkind = mode_kind(newmode)
 
718
            else:
 
719
                newexe = False
 
720
                newkind = None
 
721
            newpath = newpath.decode("utf-8")
 
722
            if newpath == u'':
 
723
                newparent = None
 
724
                newname = u''
 
725
            else:
 
726
                newparentpath, newname = osutils.split(newpath)
 
727
                newparent = mapping.generate_file_id(newparentpath)
 
728
        if (not include_unchanged and
 
729
            oldkind == 'directory' and newkind == 'directory' and
 
730
            oldpath == newpath):
 
731
            continue
 
732
        yield (fileid, (oldpath, newpath), (oldsha != newsha),
 
733
             (oldversioned, newversioned),
 
734
             (oldparent, newparent), (oldname, newname),
 
735
             (oldkind, newkind), (oldexe, newexe))
 
736
 
 
737
 
 
738
class InterGitTrees(_mod_tree.InterTree):
 
739
    """InterTree that works between two git trees."""
 
740
 
 
741
    _matching_from_tree_format = None
 
742
    _matching_to_tree_format = None
 
743
    _test_mutable_trees_to_test_trees = None
 
744
 
 
745
    @classmethod
 
746
    def is_compatible(cls, source, target):
 
747
        return (isinstance(source, GitRevisionTree) and
 
748
                isinstance(target, GitRevisionTree))
 
749
 
 
750
    def compare(self, want_unchanged=False, specific_files=None,
 
751
                extra_trees=None, require_versioned=False, include_root=False,
 
752
                want_unversioned=False):
 
753
        with self.lock_read():
 
754
            changes, target_extras = self._iter_git_changes(
 
755
                    want_unchanged=want_unchanged,
 
756
                    require_versioned=require_versioned,
 
757
                    specific_files=specific_files,
 
758
                    extra_trees=extra_trees,
 
759
                    want_unversioned=want_unversioned)
 
760
            source_fileid_map = self.source._fileid_map
 
761
            target_fileid_map = self.target._fileid_map
 
762
            return tree_delta_from_git_changes(changes, self.target.mapping,
 
763
                (source_fileid_map, target_fileid_map),
 
764
                specific_files=specific_files, include_root=include_root,
 
765
                target_extras=target_extras)
 
766
 
 
767
    def iter_changes(self, include_unchanged=False, specific_files=None,
 
768
                     pb=None, extra_trees=[], require_versioned=True,
 
769
                     want_unversioned=False):
 
770
        with self.lock_read():
 
771
            changes, target_extras = self._iter_git_changes(
 
772
                    want_unchanged=include_unchanged,
 
773
                    require_versioned=require_versioned,
 
774
                    specific_files=specific_files,
 
775
                    extra_trees=extra_trees,
 
776
                    want_unversioned=want_unversioned)
 
777
            return changes_from_git_changes(
 
778
                    changes, self.target.mapping,
 
779
                    specific_files=specific_files,
 
780
                    include_unchanged=include_unchanged,
 
781
                    target_extras=target_extras)
 
782
 
 
783
    def _iter_git_changes(self, want_unchanged=False, specific_files=None,
 
784
            require_versioned=False, extra_trees=None,
 
785
            want_unversioned=False):
 
786
        raise NotImplementedError(self._iter_git_changes)
 
787
 
 
788
 
 
789
class InterGitRevisionTrees(InterGitTrees):
 
790
    """InterTree that works between two git revision trees."""
 
791
 
 
792
    _matching_from_tree_format = None
 
793
    _matching_to_tree_format = None
 
794
    _test_mutable_trees_to_test_trees = None
 
795
 
 
796
    @classmethod
 
797
    def is_compatible(cls, source, target):
 
798
        return (isinstance(source, GitRevisionTree) and
 
799
                isinstance(target, GitRevisionTree))
 
800
 
 
801
    def _iter_git_changes(self, want_unchanged=False, specific_files=None,
 
802
            require_versioned=True, extra_trees=None,
 
803
            want_unversioned=False):
 
804
        trees = [self.source]
 
805
        if extra_trees is not None:
 
806
            trees.extend(extra_trees)
 
807
        if specific_files is not None:
 
808
            specific_files = self.target.find_related_paths_across_trees(
 
809
                    specific_files, trees,
 
810
                    require_versioned=require_versioned)
 
811
 
 
812
        if self.source._repository._git.object_store != self.target._repository._git.object_store:
 
813
            store = OverlayObjectStore([self.source._repository._git.object_store,
 
814
                                        self.target._repository._git.object_store])
 
815
        else:
 
816
            store = self.source._repository._git.object_store
 
817
        return self.source._repository._git.object_store.tree_changes(
 
818
            self.source.tree, self.target.tree, want_unchanged=want_unchanged,
 
819
            include_trees=True, change_type_same=True), set()
 
820
 
 
821
 
 
822
_mod_tree.InterTree.register_optimiser(InterGitRevisionTrees)
 
823
 
 
824
 
 
825
class MutableGitIndexTree(mutabletree.MutableTree):
 
826
 
 
827
    def __init__(self):
 
828
        self._lock_mode = None
 
829
        self._lock_count = 0
 
830
        self._versioned_dirs = None
 
831
        self._index_dirty = False
 
832
 
 
833
    def is_versioned(self, path):
 
834
        with self.lock_read():
 
835
            path = path.rstrip('/').encode('utf-8')
 
836
            (index, subpath) = self._lookup_index(path)
 
837
            return (subpath in index or self._has_dir(path))
 
838
 
 
839
    def _has_dir(self, path):
 
840
        if path == "":
 
841
            return True
 
842
        if self._versioned_dirs is None:
 
843
            self._load_dirs()
 
844
        return path in self._versioned_dirs
 
845
 
 
846
    def _load_dirs(self):
 
847
        if self._lock_mode is None:
 
848
            raise errors.ObjectNotLocked(self)
 
849
        self._versioned_dirs = set()
 
850
        # TODO(jelmer): Browse over all indexes
 
851
        for p, i in self._recurse_index_entries():
 
852
            self._ensure_versioned_dir(posixpath.dirname(p))
 
853
 
 
854
    def _ensure_versioned_dir(self, dirname):
 
855
        if dirname in self._versioned_dirs:
 
856
            return
 
857
        if dirname != "":
 
858
            self._ensure_versioned_dir(posixpath.dirname(dirname))
 
859
        self._versioned_dirs.add(dirname)
 
860
 
 
861
    def path2id(self, path):
 
862
        with self.lock_read():
 
863
            path = path.rstrip('/')
 
864
            if self.is_versioned(path.rstrip('/')):
 
865
                return self._fileid_map.lookup_file_id(path.encode("utf-8"))
 
866
            return None
 
867
 
 
868
    def has_id(self, file_id):
 
869
        try:
 
870
            self.id2path(file_id)
 
871
        except errors.NoSuchId:
 
872
            return False
 
873
        else:
 
874
            return True
 
875
 
 
876
    def id2path(self, file_id):
 
877
        if file_id is None:
 
878
            return ''
 
879
        if type(file_id) is not bytes:
 
880
            raise TypeError(file_id)
 
881
        with self.lock_read():
 
882
            try:
 
883
                path = self._fileid_map.lookup_path(file_id)
 
884
            except ValueError:
 
885
                raise errors.NoSuchId(self, file_id)
 
886
            path = path.decode('utf-8')
 
887
            if self.is_versioned(path):
 
888
                return path
 
889
            raise errors.NoSuchId(self, file_id)
 
890
 
 
891
    def _set_root_id(self, file_id):
 
892
        self._fileid_map.set_file_id("", file_id)
 
893
 
 
894
    def get_root_id(self):
 
895
        return self.path2id("")
 
896
 
 
897
    def _add(self, files, ids, kinds):
 
898
        for (path, file_id, kind) in zip(files, ids, kinds):
 
899
            if file_id is not None:
 
900
                raise workingtree.SettingFileIdUnsupported()
 
901
            path, can_access = osutils.normalized_filename(path)
 
902
            if not can_access:
 
903
                raise errors.InvalidNormalization(path)
 
904
            self._index_add_entry(path, kind)
 
905
 
 
906
    def _read_submodule_head(self, path):
 
907
        raise NotImplementedError(self._read_submodule_head)
 
908
 
 
909
    def _lookup_index(self, encoded_path):
 
910
        if not isinstance(encoded_path, bytes):
 
911
            raise TypeError(encoded_path)
 
912
        # TODO(jelmer): Look in other indexes
 
913
        return self.index, encoded_path
 
914
 
 
915
    def _index_del_entry(self, index, path):
 
916
        del index[path]
 
917
        # TODO(jelmer): Keep track of dirty per index
 
918
        self._index_dirty = True
 
919
 
 
920
    def _index_add_entry(self, path, kind, flags=0, reference_revision=None):
 
921
        if kind == "directory":
 
922
            # Git indexes don't contain directories
 
923
            return
 
924
        if kind == "file":
 
925
            blob = Blob()
 
926
            try:
 
927
                file, stat_val = self.get_file_with_stat(path)
 
928
            except (errors.NoSuchFile, IOError):
 
929
                # TODO: Rather than come up with something here, use the old index
 
930
                file = BytesIO()
 
931
                stat_val = os.stat_result(
 
932
                    (stat.S_IFREG | 0o644, 0, 0, 0, 0, 0, 0, 0, 0, 0))
 
933
            blob.set_raw_string(file.read())
 
934
            # Add object to the repository if it didn't exist yet
 
935
            if not blob.id in self.store:
 
936
                self.store.add_object(blob)
 
937
            hexsha = blob.id
 
938
        elif kind == "symlink":
 
939
            blob = Blob()
 
940
            try:
 
941
                stat_val = self._lstat(path)
 
942
            except EnvironmentError:
 
943
                # TODO: Rather than come up with something here, use the
 
944
                # old index
 
945
                stat_val = os.stat_result(
 
946
                    (stat.S_IFLNK, 0, 0, 0, 0, 0, 0, 0, 0, 0))
 
947
            blob.set_raw_string(
 
948
                self.get_symlink_target(path).encode("utf-8"))
 
949
            # Add object to the repository if it didn't exist yet
 
950
            if not blob.id in self.store:
 
951
                self.store.add_object(blob)
 
952
            hexsha = blob.id
 
953
        elif kind == "tree-reference":
 
954
            if reference_revision is not None:
 
955
                hexsha = self.branch.lookup_bzr_revision_id(reference_revision)[0]
 
956
            else:
 
957
                hexsha = self._read_submodule_head(path)
 
958
                if hexsha is None:
 
959
                    raise errors.NoCommits(path)
 
960
            try:
 
961
                stat_val = self._lstat(path)
 
962
            except EnvironmentError:
 
963
                stat_val = os.stat_result(
 
964
                    (S_IFGITLINK, 0, 0, 0, 0, 0, 0, 0, 0, 0))
 
965
            stat_val = os.stat_result((S_IFGITLINK, ) + stat_val[1:])
 
966
        else:
 
967
            raise AssertionError("unknown kind '%s'" % kind)
 
968
        # Add an entry to the index or update the existing entry
 
969
        ensure_normalized_path(path)
 
970
        encoded_path = path.encode("utf-8")
 
971
        if b'\r' in encoded_path or b'\n' in encoded_path:
 
972
            # TODO(jelmer): Why do we need to do this?
 
973
            trace.mutter('ignoring path with invalid newline in it: %r', path)
 
974
            return
 
975
        (index, index_path) = self._lookup_index(encoded_path)
 
976
        index[index_path] = index_entry_from_stat(stat_val, hexsha, flags)
 
977
        self._index_dirty = True
 
978
        if self._versioned_dirs is not None:
 
979
            self._ensure_versioned_dir(index_path)
 
980
 
 
981
    def _recurse_index_entries(self, index=None, basepath=""):
 
982
        # Iterate over all index entries
 
983
        with self.lock_read():
 
984
            if index is None:
 
985
                index = self.index
 
986
            for path, value in index.iteritems():
 
987
                yield (posixpath.join(basepath, path), value)
 
988
                (ctime, mtime, dev, ino, mode, uid, gid, size, sha, flags) = value
 
989
                if S_ISGITLINK(mode):
 
990
                    pass # TODO(jelmer): dive into submodule
 
991
 
 
992
 
 
993
    def iter_entries_by_dir(self, specific_files=None, yield_parents=False):
 
994
        if yield_parents:
 
995
            raise NotImplementedError(self.iter_entries_by_dir)
 
996
        with self.lock_read():
 
997
            if specific_files is not None:
 
998
                specific_files = set(specific_files)
 
999
            else:
 
1000
                specific_files = None
 
1001
            root_ie = self._get_dir_ie(u"", None)
 
1002
            ret = {}
 
1003
            if specific_files is None or u"" in specific_files:
 
1004
                ret[(None, u"")] = root_ie
 
1005
            dir_ids = {u"": root_ie.file_id}
 
1006
            for path, value in self._recurse_index_entries():
 
1007
                if self.mapping.is_special_file(path):
 
1008
                    continue
 
1009
                path = path.decode("utf-8")
 
1010
                if specific_files is not None and not path in specific_files:
 
1011
                    continue
 
1012
                (parent, name) = posixpath.split(path)
 
1013
                try:
 
1014
                    file_ie = self._get_file_ie(name, path, value, None)
 
1015
                except errors.NoSuchFile:
 
1016
                    continue
 
1017
                if yield_parents or specific_files is None:
 
1018
                    for (dir_path, dir_ie) in self._add_missing_parent_ids(parent,
 
1019
                            dir_ids):
 
1020
                        ret[(posixpath.dirname(dir_path), dir_path)] = dir_ie
 
1021
                file_ie.parent_id = self.path2id(parent)
 
1022
                ret[(posixpath.dirname(path), path)] = file_ie
 
1023
            return ((path, ie) for ((_, path), ie) in sorted(ret.items()))
 
1024
 
 
1025
    def iter_references(self):
 
1026
        # TODO(jelmer): Implement a more efficient version of this
 
1027
        for path, entry in self.iter_entries_by_dir():
 
1028
            if entry.kind == 'tree-reference':
 
1029
                yield path, self.mapping.generate_file_id(b'')
 
1030
 
 
1031
    def _get_dir_ie(self, path, parent_id):
 
1032
        file_id = self.path2id(path)
 
1033
        return GitTreeDirectory(file_id,
 
1034
            posixpath.basename(path).strip("/"), parent_id)
 
1035
 
 
1036
    def _get_file_ie(self, name, path, value, parent_id):
 
1037
        if type(name) is not unicode:
 
1038
            raise TypeError(name)
 
1039
        if type(path) is not unicode:
 
1040
            raise TypeError(path)
 
1041
        if not isinstance(value, tuple) or len(value) != 10:
 
1042
            raise TypeError(value)
 
1043
        (ctime, mtime, dev, ino, mode, uid, gid, size, sha, flags) = value
 
1044
        file_id = self.path2id(path)
 
1045
        if type(file_id) != str:
 
1046
            raise AssertionError
 
1047
        kind = mode_kind(mode)
 
1048
        ie = entry_factory[kind](file_id, name, parent_id)
 
1049
        if kind == 'symlink':
 
1050
            ie.symlink_target = self.get_symlink_target(path, file_id)
 
1051
        elif kind == 'tree-reference':
 
1052
            ie.reference_revision = self.get_reference_revision(path, file_id)
 
1053
        else:
 
1054
            try:
 
1055
                data = self.get_file_text(path, file_id)
 
1056
            except errors.NoSuchFile:
 
1057
                data = None
 
1058
            except IOError as e:
 
1059
                if e.errno != errno.ENOENT:
 
1060
                    raise
 
1061
                data = None
 
1062
            if data is None:
 
1063
                data = self.branch.repository._git.object_store[sha].data
 
1064
            ie.text_sha1 = osutils.sha_string(data)
 
1065
            ie.text_size = len(data)
 
1066
            ie.executable = bool(stat.S_ISREG(mode) and stat.S_IEXEC & mode)
 
1067
        return ie
 
1068
 
 
1069
    def _add_missing_parent_ids(self, path, dir_ids):
 
1070
        if path in dir_ids:
 
1071
            return []
 
1072
        parent = posixpath.dirname(path).strip("/")
 
1073
        ret = self._add_missing_parent_ids(parent, dir_ids)
 
1074
        parent_id = dir_ids[parent]
 
1075
        ie = self._get_dir_ie(path, parent_id)
 
1076
        dir_ids[path] = ie.file_id
 
1077
        ret.append((path, ie))
 
1078
        return ret
 
1079
 
 
1080
    def _comparison_data(self, entry, path):
 
1081
        if entry is None:
 
1082
            return None, False, None
 
1083
        return entry.kind, entry.executable, None
 
1084
 
 
1085
    def _unversion_path(self, path):
 
1086
        if self._lock_mode is None:
 
1087
            raise errors.ObjectNotLocked(self)
 
1088
        encoded_path = path.encode("utf-8")
 
1089
        count = 0
 
1090
        (index, subpath) = self._lookup_index(encoded_path)
 
1091
        try:
 
1092
            self._index_del_entry(index, encoded_path)
 
1093
        except KeyError:
 
1094
            # A directory, perhaps?
 
1095
            # TODO(jelmer): Deletes that involve submodules?
 
1096
            for p in list(index):
 
1097
                if p.startswith(subpath+b"/"):
 
1098
                    count += 1
 
1099
                    self._index_del_entry(index, p)
 
1100
        else:
 
1101
            count = 1
 
1102
        self._versioned_dirs = None
 
1103
        return count
 
1104
 
 
1105
    def unversion(self, paths, file_ids=None):
 
1106
        with self.lock_tree_write():
 
1107
            for path in paths:
 
1108
                if self._unversion_path(path) == 0:
 
1109
                    raise errors.NoSuchFile(path)
 
1110
            self._versioned_dirs = None
 
1111
            self.flush()
 
1112
 
 
1113
    def flush(self):
 
1114
        pass
 
1115
 
 
1116
    def update_basis_by_delta(self, revid, delta):
 
1117
        # TODO(jelmer): This shouldn't be called, it's inventory specific.
 
1118
        for (old_path, new_path, file_id, ie) in delta:
 
1119
            if old_path is not None:
 
1120
                (index, old_subpath) = self._lookup_index(old_path.encode('utf-8'))
 
1121
                if old_subpath in index:
 
1122
                    self._index_del_entry(index, old_subpath)
 
1123
                    self._versioned_dirs = None
 
1124
            if new_path is not None and ie.kind != 'directory':
 
1125
                self._index_add_entry(new_path, ie.kind)
 
1126
        self.flush()
 
1127
        self._set_merges_from_parent_ids([])
 
1128
 
 
1129
    def move(self, from_paths, to_dir=None, after=None):
 
1130
        rename_tuples = []
 
1131
        with self.lock_tree_write():
 
1132
            to_abs = self.abspath(to_dir)
 
1133
            if not os.path.isdir(to_abs):
 
1134
                raise errors.BzrMoveFailedError('', to_dir,
 
1135
                    errors.NotADirectory(to_abs))
 
1136
 
 
1137
            for from_rel in from_paths:
 
1138
                from_tail = os.path.split(from_rel)[-1]
 
1139
                to_rel = os.path.join(to_dir, from_tail)
 
1140
                self.rename_one(from_rel, to_rel, after=after)
 
1141
                rename_tuples.append((from_rel, to_rel))
 
1142
            self.flush()
 
1143
            return rename_tuples
 
1144
 
 
1145
    def rename_one(self, from_rel, to_rel, after=None):
 
1146
        from_path = from_rel.encode("utf-8")
 
1147
        to_rel, can_access = osutils.normalized_filename(to_rel)
 
1148
        if not can_access:
 
1149
            raise errors.InvalidNormalization(to_rel)
 
1150
        to_path = to_rel.encode("utf-8")
 
1151
        with self.lock_tree_write():
 
1152
            if not after:
 
1153
                # Perhaps it's already moved?
 
1154
                after = (
 
1155
                    not self.has_filename(from_rel) and
 
1156
                    self.has_filename(to_rel) and
 
1157
                    not self.is_versioned(to_rel))
 
1158
            if after:
 
1159
                if not self.has_filename(to_rel):
 
1160
                    raise errors.BzrMoveFailedError(from_rel, to_rel,
 
1161
                        errors.NoSuchFile(to_rel))
 
1162
                if self.basis_tree().is_versioned(to_rel):
 
1163
                    raise errors.BzrMoveFailedError(from_rel, to_rel,
 
1164
                        errors.AlreadyVersionedError(to_rel))
 
1165
 
 
1166
                kind = self.kind(to_rel)
 
1167
            else:
 
1168
                try:
 
1169
                    to_kind = self.kind(to_rel)
 
1170
                except errors.NoSuchFile:
 
1171
                    exc_type = errors.BzrRenameFailedError
 
1172
                    to_kind = None
 
1173
                else:
 
1174
                    exc_type = errors.BzrMoveFailedError
 
1175
                if self.is_versioned(to_rel):
 
1176
                    raise exc_type(from_rel, to_rel,
 
1177
                        errors.AlreadyVersionedError(to_rel))
 
1178
                if not self.has_filename(from_rel):
 
1179
                    raise errors.BzrMoveFailedError(from_rel, to_rel,
 
1180
                        errors.NoSuchFile(from_rel))
 
1181
                kind = self.kind(from_rel)
 
1182
                if not self.is_versioned(from_rel) and kind != 'directory':
 
1183
                    raise exc_type(from_rel, to_rel,
 
1184
                        errors.NotVersionedError(from_rel))
 
1185
                if self.has_filename(to_rel):
 
1186
                    raise errors.RenameFailedFilesExist(
 
1187
                        from_rel, to_rel, errors.FileExists(to_rel))
 
1188
 
 
1189
                kind = self.kind(from_rel)
 
1190
 
 
1191
            if not after and kind != 'directory':
 
1192
                (index, from_subpath) = self._lookup_index(from_path)
 
1193
                if from_subpath not in index:
 
1194
                    # It's not a file
 
1195
                    raise errors.BzrMoveFailedError(from_rel, to_rel,
 
1196
                        errors.NotVersionedError(path=from_rel))
 
1197
 
 
1198
            if not after:
 
1199
                try:
 
1200
                    self._rename_one(from_rel, to_rel)
 
1201
                except OSError as e:
 
1202
                    if e.errno == errno.ENOENT:
 
1203
                        raise errors.BzrMoveFailedError(from_rel, to_rel,
 
1204
                            errors.NoSuchFile(to_rel))
 
1205
                    raise
 
1206
            if kind != 'directory':
 
1207
                (index, from_index_path) = self._lookup_index(from_path)
 
1208
                try:
 
1209
                    self._index_del_entry(index, from_path)
 
1210
                except KeyError:
 
1211
                    pass
 
1212
                self._index_add_entry(to_rel, kind)
 
1213
            else:
 
1214
                todo = [(p, i) for (p, i) in self._recurse_index_entries() if p.startswith(from_path+'/')]
 
1215
                for child_path, child_value in todo:
 
1216
                    (child_to_index, child_to_index_path) = self._lookup_index(
 
1217
                            posixpath.join(to_path, posixpath.relpath(child_path, from_path)))
 
1218
                    child_to_index[child_to_index_path] = child_value
 
1219
                    # TODO(jelmer): Mark individual index as dirty
 
1220
                    self._index_dirty = True
 
1221
                    (child_from_index, child_from_index_path) = self._lookup_index(child_path)
 
1222
                    self._index_del_entry(child_from_index, child_from_index_path)
 
1223
 
 
1224
            self._versioned_dirs = None
 
1225
            self.flush()
 
1226
 
 
1227
    def find_related_paths_across_trees(self, paths, trees=[],
 
1228
            require_versioned=True):
 
1229
        if paths is None:
 
1230
            return None
 
1231
 
 
1232
        if require_versioned:
 
1233
            trees = [self] + (trees if trees is not None else [])
 
1234
            unversioned = set()
 
1235
            for p in paths:
 
1236
                for t in trees:
 
1237
                    if t.is_versioned(p):
 
1238
                        break
 
1239
                else:
 
1240
                    unversioned.add(p)
 
1241
            if unversioned:
 
1242
                raise errors.PathsNotVersionedError(unversioned)
 
1243
 
 
1244
        return filter(self.is_versioned, paths)
 
1245
 
 
1246
    def path_content_summary(self, path):
 
1247
        """See Tree.path_content_summary."""
 
1248
        try:
 
1249
            stat_result = self._lstat(path)
 
1250
        except OSError as e:
 
1251
            if getattr(e, 'errno', None) == errno.ENOENT:
 
1252
                # no file.
 
1253
                return ('missing', None, None, None)
 
1254
            # propagate other errors
 
1255
            raise
 
1256
        kind = mode_kind(stat_result.st_mode)
 
1257
        if kind == 'file':
 
1258
            return self._file_content_summary(path, stat_result)
 
1259
        elif kind == 'directory':
 
1260
            # perhaps it looks like a plain directory, but it's really a
 
1261
            # reference.
 
1262
            if self._directory_is_tree_reference(path):
 
1263
                kind = 'tree-reference'
 
1264
            return kind, None, None, None
 
1265
        elif kind == 'symlink':
 
1266
            target = osutils.readlink(self.abspath(path))
 
1267
            return ('symlink', None, None, target)
 
1268
        else:
 
1269
            return (kind, None, None, None)
 
1270
 
 
1271
    def kind(self, relpath, file_id=None):
 
1272
        kind = osutils.file_kind(self.abspath(relpath))
 
1273
        if kind == 'directory':
 
1274
            (index, index_path) = self._lookup_index(relpath.encode('utf-8'))
 
1275
            try:
 
1276
                mode = index[index_path].mode
 
1277
            except KeyError:
 
1278
                return kind
 
1279
            else:
 
1280
                if S_ISGITLINK(mode):
 
1281
                    return 'tree-reference'
 
1282
                return 'directory'
 
1283
        else:
 
1284
            return kind
 
1285
 
 
1286
    def _live_entry(self, relpath):
 
1287
        raise NotImplementedError(self._live_entry)
 
1288
 
 
1289
 
 
1290
class InterIndexGitTree(InterGitTrees):
 
1291
    """InterTree that works between a Git revision tree and an index."""
 
1292
 
 
1293
    def __init__(self, source, target):
 
1294
        super(InterIndexGitTree, self).__init__(source, target)
 
1295
        self._index = target.index
 
1296
 
 
1297
    @classmethod
 
1298
    def is_compatible(cls, source, target):
 
1299
        return (isinstance(source, GitRevisionTree) and
 
1300
                isinstance(target, MutableGitIndexTree))
 
1301
 
 
1302
    def _iter_git_changes(self, want_unchanged=False, specific_files=None,
 
1303
            require_versioned=False, extra_trees=None,
 
1304
            want_unversioned=False):
 
1305
        trees = [self.source]
 
1306
        if extra_trees is not None:
 
1307
            trees.extend(extra_trees)
 
1308
        if specific_files is not None:
 
1309
            specific_files = self.target.find_related_paths_across_trees(
 
1310
                    specific_files, trees,
 
1311
                    require_versioned=require_versioned)
 
1312
        # TODO(jelmer): Restrict to specific_files, for performance reasons.
 
1313
        with self.lock_read():
 
1314
            return changes_between_git_tree_and_working_copy(
 
1315
                self.source.store, self.source.tree,
 
1316
                self.target, want_unchanged=want_unchanged,
 
1317
                want_unversioned=want_unversioned)
 
1318
 
 
1319
 
 
1320
_mod_tree.InterTree.register_optimiser(InterIndexGitTree)
 
1321
 
 
1322
 
 
1323
def changes_between_git_tree_and_working_copy(store, from_tree_sha, target,
 
1324
        want_unchanged=False, want_unversioned=False):
 
1325
    """Determine the changes between a git tree and a working tree with index.
 
1326
 
 
1327
    """
 
1328
    extras = set()
 
1329
    blobs = {}
 
1330
    # Report dirified directories to commit_tree first, so that they can be
 
1331
    # replaced with non-empty directories if they have contents.
 
1332
    dirified = []
 
1333
    for path, index_entry in target._recurse_index_entries():
 
1334
        try:
 
1335
            live_entry = target._live_entry(path)
 
1336
        except EnvironmentError as e:
 
1337
            if e.errno == errno.ENOENT:
 
1338
                # Entry was removed; keep it listed, but mark it as gone.
 
1339
                blobs[path] = (ZERO_SHA, 0)
 
1340
            elif e.errno == errno.EISDIR:
 
1341
                # Entry was turned into a directory
 
1342
                dirified.append((path, Tree().id, stat.S_IFDIR))
 
1343
                store.add_object(Tree())
 
1344
            else:
 
1345
                raise
 
1346
        else:
 
1347
            blobs[path] = (live_entry.sha, cleanup_mode(live_entry.mode))
 
1348
    if want_unversioned:
 
1349
        for e in target.extras():
 
1350
            st = target._lstat(e)
 
1351
            try:
 
1352
                np, accessible = osutils.normalized_filename(e)
 
1353
            except UnicodeDecodeError:
 
1354
                raise errors.BadFilenameEncoding(
 
1355
                    e, osutils._fs_enc)
 
1356
            if stat.S_ISDIR(st.st_mode):
 
1357
                blob = Tree()
 
1358
            else:
 
1359
                blob = blob_from_path_and_stat(target.abspath(e).encode(osutils._fs_enc), st)
 
1360
            store.add_object(blob)
 
1361
            np = np.encode('utf-8')
 
1362
            blobs[np] = (blob.id, cleanup_mode(st.st_mode))
 
1363
            extras.add(np)
 
1364
    to_tree_sha = commit_tree(store, dirified + [(p, s, m) for (p, (s, m)) in blobs.items()])
 
1365
    return store.tree_changes(
 
1366
        from_tree_sha, to_tree_sha, include_trees=True,
 
1367
        want_unchanged=want_unchanged, change_type_same=True), extras