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  • Committer: Patch Queue Manager
  • Date: 2016-04-21 04:10:52 UTC
  • mfrom: (6616.1.1 fix-en-user-guide)
  • Revision ID: pqm@pqm.ubuntu.com-20160421041052-clcye7ns1qcl2n7w
(richard-wilbur) Ensure build of English use guide always uses English text
 even when user's locale specifies a different language. (Jelmer Vernooij)

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bzrlib/transform.py
1
 
# Copyright (C) 2006, 2007 Canonical Ltd
 
1
# Copyright (C) 2006-2011 Canonical Ltd
2
2
#
3
3
# This program is free software; you can redistribute it and/or modify
4
4
# it under the terms of the GNU General Public License as published by
12
12
#
13
13
# You should have received a copy of the GNU General Public License
14
14
# along with this program; if not, write to the Free Software
15
 
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
15
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 
16
 
 
17
from __future__ import absolute_import
16
18
 
17
19
import os
18
20
import errno
19
 
from stat import S_ISREG
 
21
from stat import S_ISREG, S_IEXEC
 
22
import time
20
23
 
21
 
from bzrlib.lazy_import import lazy_import
22
 
lazy_import(globals(), """
23
 
from bzrlib import (
24
 
    bzrdir,
 
24
from bzrlib import (
 
25
    config as _mod_config,
 
26
    errors,
 
27
    lazy_import,
 
28
    registry,
 
29
    trace,
 
30
    tree,
 
31
    )
 
32
lazy_import.lazy_import(globals(), """
 
33
from bzrlib import (
 
34
    annotate,
 
35
    bencode,
 
36
    controldir,
 
37
    commit,
 
38
    conflicts,
25
39
    delta,
26
 
    errors,
27
 
    inventory
 
40
    inventory,
 
41
    multiparent,
 
42
    osutils,
 
43
    revision as _mod_revision,
 
44
    ui,
 
45
    urlutils,
28
46
    )
 
47
from bzrlib.i18n import gettext
29
48
""")
30
 
from bzrlib.errors import (DuplicateKey, MalformedTransform, NoSuchFile,
31
 
                           ReusingTransform, NotVersionedError, CantMoveRoot,
32
 
                           ExistingLimbo, ImmortalLimbo, NoFinalPath)
33
 
from bzrlib.inventory import InventoryEntry
34
 
from bzrlib.osutils import (file_kind, supports_executable, pathjoin, lexists,
35
 
                            delete_any)
36
 
from bzrlib.progress import DummyProgress, ProgressPhase
 
49
from bzrlib.errors import (DuplicateKey, MalformedTransform,
 
50
                           ReusingTransform, CantMoveRoot,
 
51
                           ImmortalLimbo, NoFinalPath,
 
52
                           UnableCreateSymlink)
 
53
from bzrlib.filters import filtered_output_bytes, ContentFilterContext
 
54
from bzrlib.mutabletree import MutableTree
 
55
from bzrlib.osutils import (
 
56
    delete_any,
 
57
    file_kind,
 
58
    has_symlinks,
 
59
    pathjoin,
 
60
    sha_file,
 
61
    splitpath,
 
62
    )
 
63
from bzrlib.progress import ProgressPhase
37
64
from bzrlib.symbol_versioning import (
38
 
        deprecated_function,
39
 
        zero_fifteen,
40
 
        zero_ninety,
41
 
        )
42
 
from bzrlib.trace import mutter, warning
43
 
from bzrlib import tree
44
 
import bzrlib.ui
45
 
import bzrlib.urlutils as urlutils
 
65
    deprecated_function,
 
66
    deprecated_in,
 
67
    deprecated_method,
 
68
    )
46
69
 
47
70
 
48
71
ROOT_PARENT = "root-parent"
49
72
 
50
 
 
51
73
def unique_add(map, key, value):
52
74
    if key in map:
53
75
        raise DuplicateKey(key=key)
54
76
    map[key] = value
55
77
 
56
78
 
 
79
 
57
80
class _TransformResults(object):
58
81
    def __init__(self, modified_paths, rename_count):
59
82
        object.__init__(self)
61
84
        self.rename_count = rename_count
62
85
 
63
86
 
64
 
class TreeTransform(object):
65
 
    """Represent a tree transformation.
66
 
    
67
 
    This object is designed to support incremental generation of the transform,
68
 
    in any order.
69
 
 
70
 
    However, it gives optimum performance when parent directories are created
71
 
    before their contents.  The transform is then able to put child files
72
 
    directly in their parent directory, avoiding later renames.
73
 
    
74
 
    It is easy to produce malformed transforms, but they are generally
75
 
    harmless.  Attempting to apply a malformed transform will cause an
76
 
    exception to be raised before any modifications are made to the tree.  
77
 
 
78
 
    Many kinds of malformed transforms can be corrected with the 
79
 
    resolve_conflicts function.  The remaining ones indicate programming error,
80
 
    such as trying to create a file with no path.
81
 
 
82
 
    Two sets of file creation methods are supplied.  Convenience methods are:
83
 
     * new_file
84
 
     * new_directory
85
 
     * new_symlink
86
 
 
87
 
    These are composed of the low-level methods:
88
 
     * create_path
89
 
     * create_file or create_directory or create_symlink
90
 
     * version_file
91
 
     * set_executability
92
 
    """
93
 
    def __init__(self, tree, pb=DummyProgress()):
94
 
        """Note: a tree_write lock is taken on the tree.
95
 
        
96
 
        Use TreeTransform.finalize() to release the lock (can be omitted if
97
 
        TreeTransform.apply() called).
 
87
class TreeTransformBase(object):
 
88
    """The base class for TreeTransform and its kin."""
 
89
 
 
90
    def __init__(self, tree, pb=None,
 
91
                 case_sensitive=True):
 
92
        """Constructor.
 
93
 
 
94
        :param tree: The tree that will be transformed, but not necessarily
 
95
            the output tree.
 
96
        :param pb: ignored
 
97
        :param case_sensitive: If True, the target of the transform is
 
98
            case sensitive, not just case preserving.
98
99
        """
99
100
        object.__init__(self)
100
101
        self._tree = tree
101
 
        self._tree.lock_tree_write()
102
 
        try:
103
 
            control_files = self._tree._control_files
104
 
            self._limbodir = urlutils.local_path_from_url(
105
 
                control_files.controlfilename('limbo'))
106
 
            try:
107
 
                os.mkdir(self._limbodir)
108
 
            except OSError, e:
109
 
                if e.errno == errno.EEXIST:
110
 
                    raise ExistingLimbo(self._limbodir)
111
 
            self._deletiondir = urlutils.local_path_from_url(
112
 
                control_files.controlfilename('pending-deletion'))
113
 
            try:
114
 
                os.mkdir(self._deletiondir)
115
 
            except OSError, e:
116
 
                if e.errno == errno.EEXIST:
117
 
                    raise errors.ExistingPendingDeletion(self._deletiondir)
118
 
 
119
 
        except: 
120
 
            self._tree.unlock()
121
 
            raise
122
 
 
123
102
        self._id_number = 0
 
103
        # mapping of trans_id -> new basename
124
104
        self._new_name = {}
 
105
        # mapping of trans_id -> new parent trans_id
125
106
        self._new_parent = {}
 
107
        # mapping of trans_id with new contents -> new file_kind
126
108
        self._new_contents = {}
127
 
        # A mapping of transform ids to their limbo filename
128
 
        self._limbo_files = {}
129
 
        # A mapping of transform ids to a set of the transform ids of children
130
 
        # that their limbo directory has
131
 
        self._limbo_children = {}
132
 
        # Map transform ids to maps of child filename to child transform id
133
 
        self._limbo_children_names = {}
134
 
        # List of transform ids that need to be renamed from limbo into place
135
 
        self._needs_rename = set()
 
109
        # mapping of trans_id => (sha1 of content, stat_value)
 
110
        self._observed_sha1s = {}
 
111
        # Set of trans_ids whose contents will be removed
136
112
        self._removed_contents = set()
 
113
        # Mapping of trans_id -> new execute-bit value
137
114
        self._new_executability = {}
 
115
        # Mapping of trans_id -> new tree-reference value
138
116
        self._new_reference_revision = {}
 
117
        # Mapping of trans_id -> new file_id
139
118
        self._new_id = {}
 
119
        # Mapping of old file-id -> trans_id
140
120
        self._non_present_ids = {}
 
121
        # Mapping of new file_id -> trans_id
141
122
        self._r_new_id = {}
 
123
        # Set of trans_ids that will be removed
142
124
        self._removed_id = set()
 
125
        # Mapping of path in old tree -> trans_id
143
126
        self._tree_path_ids = {}
 
127
        # Mapping trans_id -> path in old tree
144
128
        self._tree_id_paths = {}
145
 
        # Cache of realpath results, to speed up canonical_path
146
 
        self._realpaths = {}
147
 
        # Cache of relpath results, to speed up canonical_path
148
 
        self._relpaths = {}
149
 
        self._new_root = self.trans_id_tree_file_id(tree.get_root_id())
150
 
        self.__done = False
 
129
        # The trans_id that will be used as the tree root
 
130
        root_id = tree.get_root_id()
 
131
        if root_id is not None:
 
132
            self._new_root = self.trans_id_tree_file_id(root_id)
 
133
        else:
 
134
            self._new_root = None
 
135
        # Indicator of whether the transform has been applied
 
136
        self._done = False
 
137
        # A progress bar
151
138
        self._pb = pb
 
139
        # Whether the target is case sensitive
 
140
        self._case_sensitive_target = case_sensitive
 
141
        # A counter of how many files have been renamed
152
142
        self.rename_count = 0
153
143
 
 
144
    def __enter__(self):
 
145
        """Support Context Manager API."""
 
146
        return self
 
147
 
 
148
    def __exit__(self, exc_type, exc_val, exc_tb):
 
149
        """Support Context Manager API."""
 
150
        self.finalize()
 
151
 
 
152
    def finalize(self):
 
153
        """Release the working tree lock, if held.
 
154
 
 
155
        This is required if apply has not been invoked, but can be invoked
 
156
        even after apply.
 
157
        """
 
158
        if self._tree is None:
 
159
            return
 
160
        for hook in MutableTree.hooks['post_transform']:
 
161
            hook(self._tree, self)
 
162
        self._tree.unlock()
 
163
        self._tree = None
 
164
 
154
165
    def __get_root(self):
155
166
        return self._new_root
156
167
 
157
168
    root = property(__get_root)
158
169
 
159
 
    def finalize(self):
160
 
        """Release the working tree lock, if held, clean up limbo dir.
161
 
 
162
 
        This is required if apply has not been invoked, but can be invoked
163
 
        even after apply.
164
 
        """
165
 
        if self._tree is None:
166
 
            return
167
 
        try:
168
 
            entries = [(self._limbo_name(t), t, k) for t, k in
169
 
                       self._new_contents.iteritems()]
170
 
            entries.sort(reverse=True)
171
 
            for path, trans_id, kind in entries:
172
 
                if kind == "directory":
173
 
                    os.rmdir(path)
174
 
                else:
175
 
                    os.unlink(path)
176
 
            try:
177
 
                os.rmdir(self._limbodir)
178
 
            except OSError:
179
 
                # We don't especially care *why* the dir is immortal.
180
 
                raise ImmortalLimbo(self._limbodir)
181
 
            try:
182
 
                os.rmdir(self._deletiondir)
183
 
            except OSError:
184
 
                raise errors.ImmortalPendingDeletion(self._deletiondir)
185
 
        finally:
186
 
            self._tree.unlock()
187
 
            self._tree = None
188
 
 
189
170
    def _assign_id(self):
190
171
        """Produce a new tranform id"""
191
172
        new_id = "new-%s" % self._id_number
201
182
 
202
183
    def adjust_path(self, name, parent, trans_id):
203
184
        """Change the path that is assigned to a transaction id."""
 
185
        if parent is None:
 
186
            raise ValueError("Parent trans-id may not be None")
204
187
        if trans_id == self._new_root:
205
188
            raise CantMoveRoot
206
 
        previous_parent = self._new_parent.get(trans_id)
207
 
        previous_name = self._new_name.get(trans_id)
208
189
        self._new_name[trans_id] = name
209
190
        self._new_parent[trans_id] = parent
210
 
        if (trans_id in self._limbo_files and
211
 
            trans_id not in self._needs_rename):
212
 
            self._rename_in_limbo([trans_id])
213
 
            self._limbo_children[previous_parent].remove(trans_id)
214
 
            del self._limbo_children_names[previous_parent][previous_name]
215
 
 
216
 
    def _rename_in_limbo(self, trans_ids):
217
 
        """Fix limbo names so that the right final path is produced.
218
 
 
219
 
        This means we outsmarted ourselves-- we tried to avoid renaming
220
 
        these files later by creating them with their final names in their
221
 
        final parents.  But now the previous name or parent is no longer
222
 
        suitable, so we have to rename them.
223
 
 
224
 
        Even for trans_ids that have no new contents, we must remove their
225
 
        entries from _limbo_files, because they are now stale.
226
 
        """
227
 
        for trans_id in trans_ids:
228
 
            old_path = self._limbo_files.pop(trans_id)
229
 
            if trans_id not in self._new_contents:
230
 
                continue
231
 
            new_path = self._limbo_name(trans_id)
232
 
            os.rename(old_path, new_path)
233
191
 
234
192
    def adjust_root_path(self, name, parent):
235
193
        """Emulate moving the root by moving all children, instead.
236
 
        
 
194
 
237
195
        We do this by undoing the association of root's transaction id with the
238
196
        current tree.  This allows us to create a new directory with that
239
 
        transaction id.  We unversion the root directory and version the 
 
197
        transaction id.  We unversion the root directory and version the
240
198
        physically new directory, and hope someone versions the tree root
241
199
        later.
242
200
        """
245
203
        # force moving all children of root
246
204
        for child_id in self.iter_tree_children(old_root):
247
205
            if child_id != parent:
248
 
                self.adjust_path(self.final_name(child_id), 
 
206
                self.adjust_path(self.final_name(child_id),
249
207
                                 self.final_parent(child_id), child_id)
250
208
            file_id = self.final_file_id(child_id)
251
209
            if file_id is not None:
252
210
                self.unversion_file(child_id)
253
211
            self.version_file(file_id, child_id)
254
 
        
 
212
 
255
213
        # the physical root needs a new transaction id
256
214
        self._tree_path_ids.pop("")
257
215
        self._tree_id_paths.pop(old_root)
263
221
        self.version_file(old_root_file_id, old_root)
264
222
        self.unversion_file(self._new_root)
265
223
 
 
224
    def fixup_new_roots(self):
 
225
        """Reinterpret requests to change the root directory
 
226
 
 
227
        Instead of creating a root directory, or moving an existing directory,
 
228
        all the attributes and children of the new root are applied to the
 
229
        existing root directory.
 
230
 
 
231
        This means that the old root trans-id becomes obsolete, so it is
 
232
        recommended only to invoke this after the root trans-id has become
 
233
        irrelevant.
 
234
 
 
235
        """
 
236
        new_roots = [k for k, v in self._new_parent.iteritems() if v ==
 
237
                     ROOT_PARENT]
 
238
        if len(new_roots) < 1:
 
239
            return
 
240
        if len(new_roots) != 1:
 
241
            raise ValueError('A tree cannot have two roots!')
 
242
        if self._new_root is None:
 
243
            self._new_root = new_roots[0]
 
244
            return
 
245
        old_new_root = new_roots[0]
 
246
        # unversion the new root's directory.
 
247
        if self.final_kind(self._new_root) is None:
 
248
            file_id = self.final_file_id(old_new_root)
 
249
        else:
 
250
            file_id = self.final_file_id(self._new_root)
 
251
        if old_new_root in self._new_id:
 
252
            self.cancel_versioning(old_new_root)
 
253
        else:
 
254
            self.unversion_file(old_new_root)
 
255
        # if, at this stage, root still has an old file_id, zap it so we can
 
256
        # stick a new one in.
 
257
        if (self.tree_file_id(self._new_root) is not None and
 
258
            self._new_root not in self._removed_id):
 
259
            self.unversion_file(self._new_root)
 
260
        if file_id is not None:
 
261
            self.version_file(file_id, self._new_root)
 
262
 
 
263
        # Now move children of new root into old root directory.
 
264
        # Ensure all children are registered with the transaction, but don't
 
265
        # use directly-- some tree children have new parents
 
266
        list(self.iter_tree_children(old_new_root))
 
267
        # Move all children of new root into old root directory.
 
268
        for child in self.by_parent().get(old_new_root, []):
 
269
            self.adjust_path(self.final_name(child), self._new_root, child)
 
270
 
 
271
        # Ensure old_new_root has no directory.
 
272
        if old_new_root in self._new_contents:
 
273
            self.cancel_creation(old_new_root)
 
274
        else:
 
275
            self.delete_contents(old_new_root)
 
276
 
 
277
        # prevent deletion of root directory.
 
278
        if self._new_root in self._removed_contents:
 
279
            self.cancel_deletion(self._new_root)
 
280
 
 
281
        # destroy path info for old_new_root.
 
282
        del self._new_parent[old_new_root]
 
283
        del self._new_name[old_new_root]
 
284
 
266
285
    def trans_id_tree_file_id(self, inventory_id):
267
286
        """Determine the transaction id of a working tree file.
268
 
        
 
287
 
269
288
        This reflects only files that already exist, not ones that will be
270
289
        added by transactions.
271
290
        """
272
 
        path = self._tree.inventory.id2path(inventory_id)
 
291
        if inventory_id is None:
 
292
            raise ValueError('None is not a valid file id')
 
293
        path = self._tree.id2path(inventory_id)
273
294
        return self.trans_id_tree_path(path)
274
295
 
275
296
    def trans_id_file_id(self, file_id):
278
299
        a transaction has been unversioned, it is deliberately still returned.
279
300
        (this will likely lead to an unversioned parent conflict.)
280
301
        """
 
302
        if file_id is None:
 
303
            raise ValueError('None is not a valid file id')
281
304
        if file_id in self._r_new_id and self._r_new_id[file_id] is not None:
282
305
            return self._r_new_id[file_id]
283
 
        elif file_id in self._tree.inventory:
284
 
            return self.trans_id_tree_file_id(file_id)
285
 
        elif file_id in self._non_present_ids:
286
 
            return self._non_present_ids[file_id]
287
 
        else:
288
 
            trans_id = self._assign_id()
289
 
            self._non_present_ids[file_id] = trans_id
290
 
            return trans_id
291
 
 
292
 
    def canonical_path(self, path):
293
 
        """Get the canonical tree-relative path"""
294
 
        # don't follow final symlinks
295
 
        abs = self._tree.abspath(path)
296
 
        if abs in self._relpaths:
297
 
            return self._relpaths[abs]
298
 
        dirname, basename = os.path.split(abs)
299
 
        if dirname not in self._realpaths:
300
 
            self._realpaths[dirname] = os.path.realpath(dirname)
301
 
        dirname = self._realpaths[dirname]
302
 
        abs = pathjoin(dirname, basename)
303
 
        if dirname in self._relpaths:
304
 
            relpath = pathjoin(self._relpaths[dirname], basename)
305
 
            relpath = relpath.rstrip('/\\')
306
 
        else:
307
 
            relpath = self._tree.relpath(abs)
308
 
        self._relpaths[abs] = relpath
309
 
        return relpath
 
306
        else:
 
307
            try:
 
308
                self._tree.iter_entries_by_dir([file_id]).next()
 
309
            except StopIteration:
 
310
                if file_id in self._non_present_ids:
 
311
                    return self._non_present_ids[file_id]
 
312
                else:
 
313
                    trans_id = self._assign_id()
 
314
                    self._non_present_ids[file_id] = trans_id
 
315
                    return trans_id
 
316
            else:
 
317
                return self.trans_id_tree_file_id(file_id)
310
318
 
311
319
    def trans_id_tree_path(self, path):
312
320
        """Determine (and maybe set) the transaction ID for a tree path."""
323
331
            return ROOT_PARENT
324
332
        return self.trans_id_tree_path(os.path.dirname(path))
325
333
 
326
 
    def create_file(self, contents, trans_id, mode_id=None):
327
 
        """Schedule creation of a new file.
328
 
 
329
 
        See also new_file.
330
 
        
331
 
        Contents is an iterator of strings, all of which will be written
332
 
        to the target destination.
333
 
 
334
 
        New file takes the permissions of any existing file with that id,
335
 
        unless mode_id is specified.
336
 
        """
337
 
        name = self._limbo_name(trans_id)
338
 
        f = open(name, 'wb')
339
 
        try:
340
 
            try:
341
 
                unique_add(self._new_contents, trans_id, 'file')
342
 
            except:
343
 
                # Clean up the file, it never got registered so
344
 
                # TreeTransform.finalize() won't clean it up.
345
 
                f.close()
346
 
                os.unlink(name)
347
 
                raise
348
 
 
349
 
            f.writelines(contents)
350
 
        finally:
351
 
            f.close()
352
 
        self._set_mode(trans_id, mode_id, S_ISREG)
353
 
 
354
 
    def _set_mode(self, trans_id, mode_id, typefunc):
355
 
        """Set the mode of new file contents.
356
 
        The mode_id is the existing file to get the mode from (often the same
357
 
        as trans_id).  The operation is only performed if there's a mode match
358
 
        according to typefunc.
359
 
        """
360
 
        if mode_id is None:
361
 
            mode_id = trans_id
362
 
        try:
363
 
            old_path = self._tree_id_paths[mode_id]
364
 
        except KeyError:
365
 
            return
366
 
        try:
367
 
            mode = os.stat(self._tree.abspath(old_path)).st_mode
368
 
        except OSError, e:
369
 
            if e.errno == errno.ENOENT:
370
 
                return
371
 
            else:
372
 
                raise
373
 
        if typefunc(mode):
374
 
            os.chmod(self._limbo_name(trans_id), mode)
375
 
 
376
 
    def create_directory(self, trans_id):
377
 
        """Schedule creation of a new directory.
378
 
        
379
 
        See also new_directory.
380
 
        """
381
 
        os.mkdir(self._limbo_name(trans_id))
382
 
        unique_add(self._new_contents, trans_id, 'directory')
383
 
 
384
 
    def create_symlink(self, target, trans_id):
385
 
        """Schedule creation of a new symbolic link.
386
 
 
387
 
        target is a bytestring.
388
 
        See also new_symlink.
389
 
        """
390
 
        os.symlink(target, self._limbo_name(trans_id))
391
 
        unique_add(self._new_contents, trans_id, 'symlink')
392
 
 
393
 
    def cancel_creation(self, trans_id):
394
 
        """Cancel the creation of new file contents."""
395
 
        del self._new_contents[trans_id]
396
 
        children = self._limbo_children.get(trans_id)
397
 
        # if this is a limbo directory with children, move them before removing
398
 
        # the directory
399
 
        if children is not None:
400
 
            self._rename_in_limbo(children)
401
 
            del self._limbo_children[trans_id]
402
 
            del self._limbo_children_names[trans_id]
403
 
        delete_any(self._limbo_name(trans_id))
404
 
 
405
334
    def delete_contents(self, trans_id):
406
335
        """Schedule the contents of a path entry for deletion"""
407
 
        self.tree_kind(trans_id)
408
 
        self._removed_contents.add(trans_id)
 
336
        kind = self.tree_kind(trans_id)
 
337
        if kind is not None:
 
338
            self._removed_contents.add(trans_id)
409
339
 
410
340
    def cancel_deletion(self, trans_id):
411
341
        """Cancel a scheduled deletion"""
435
365
 
436
366
    def version_file(self, file_id, trans_id):
437
367
        """Schedule a file to become versioned."""
438
 
        assert file_id is not None
 
368
        if file_id is None:
 
369
            raise ValueError()
439
370
        unique_add(self._new_id, trans_id, file_id)
440
371
        unique_add(self._r_new_id, file_id, trans_id)
441
372
 
445
376
        del self._new_id[trans_id]
446
377
        del self._r_new_id[file_id]
447
378
 
448
 
    def new_paths(self):
449
 
        """Determine the paths of all new and changed files"""
 
379
    def new_paths(self, filesystem_only=False):
 
380
        """Determine the paths of all new and changed files.
 
381
 
 
382
        :param filesystem_only: if True, only calculate values for files
 
383
            that require renames or execute bit changes.
 
384
        """
450
385
        new_ids = set()
451
 
        fp = FinalPaths(self)
452
 
        for id_set in (self._new_name, self._new_parent, self._new_contents,
453
 
                       self._new_id, self._new_executability):
 
386
        if filesystem_only:
 
387
            stale_ids = self._needs_rename.difference(self._new_name)
 
388
            stale_ids.difference_update(self._new_parent)
 
389
            stale_ids.difference_update(self._new_contents)
 
390
            stale_ids.difference_update(self._new_id)
 
391
            needs_rename = self._needs_rename.difference(stale_ids)
 
392
            id_sets = (needs_rename, self._new_executability)
 
393
        else:
 
394
            id_sets = (self._new_name, self._new_parent, self._new_contents,
 
395
                       self._new_id, self._new_executability)
 
396
        for id_set in id_sets:
454
397
            new_ids.update(id_set)
455
 
        new_paths = [(fp.get_path(t), t) for t in new_ids]
456
 
        new_paths.sort()
457
 
        return new_paths
458
 
 
459
 
    def tree_kind(self, trans_id):
460
 
        """Determine the file kind in the working tree.
461
 
 
462
 
        Raises NoSuchFile if the file does not exist
 
398
        return sorted(FinalPaths(self).get_paths(new_ids))
 
399
 
 
400
    def _inventory_altered(self):
 
401
        """Determine which trans_ids need new Inventory entries.
 
402
 
 
403
        An new entry is needed when anything that would be reflected by an
 
404
        inventory entry changes, including file name, file_id, parent file_id,
 
405
        file kind, and the execute bit.
 
406
 
 
407
        Some care is taken to return entries with real changes, not cases
 
408
        where the value is deleted and then restored to its original value,
 
409
        but some actually unchanged values may be returned.
 
410
 
 
411
        :returns: A list of (path, trans_id) for all items requiring an
 
412
            inventory change. Ordered by path.
463
413
        """
464
 
        path = self._tree_id_paths.get(trans_id)
465
 
        if path is None:
466
 
            raise NoSuchFile(None)
467
 
        try:
468
 
            return file_kind(self._tree.abspath(path))
469
 
        except OSError, e:
470
 
            if e.errno != errno.ENOENT:
471
 
                raise
472
 
            else:
473
 
                raise NoSuchFile(path)
 
414
        changed_ids = set()
 
415
        # Find entries whose file_ids are new (or changed).
 
416
        new_file_id = set(t for t in self._new_id
 
417
                          if self._new_id[t] != self.tree_file_id(t))
 
418
        for id_set in [self._new_name, self._new_parent, new_file_id,
 
419
                       self._new_executability]:
 
420
            changed_ids.update(id_set)
 
421
        # removing implies a kind change
 
422
        changed_kind = set(self._removed_contents)
 
423
        # so does adding
 
424
        changed_kind.intersection_update(self._new_contents)
 
425
        # Ignore entries that are already known to have changed.
 
426
        changed_kind.difference_update(changed_ids)
 
427
        #  to keep only the truly changed ones
 
428
        changed_kind = (t for t in changed_kind
 
429
                        if self.tree_kind(t) != self.final_kind(t))
 
430
        # all kind changes will alter the inventory
 
431
        changed_ids.update(changed_kind)
 
432
        # To find entries with changed parent_ids, find parents which existed,
 
433
        # but changed file_id.
 
434
        changed_file_id = set(t for t in new_file_id if t in self._removed_id)
 
435
        # Now add all their children to the set.
 
436
        for parent_trans_id in new_file_id:
 
437
            changed_ids.update(self.iter_tree_children(parent_trans_id))
 
438
        return sorted(FinalPaths(self).get_paths(changed_ids))
474
439
 
475
440
    def final_kind(self, trans_id):
476
441
        """Determine the final file kind, after any changes applied.
477
 
        
478
 
        Raises NoSuchFile if the file does not exist/has no contents.
479
 
        (It is conceivable that a path would be created without the
480
 
        corresponding contents insertion command)
 
442
 
 
443
        :return: None if the file does not exist/has no contents.  (It is
 
444
            conceivable that a path would be created without the corresponding
 
445
            contents insertion command)
481
446
        """
482
447
        if trans_id in self._new_contents:
483
448
            return self._new_contents[trans_id]
484
449
        elif trans_id in self._removed_contents:
485
 
            raise NoSuchFile(None)
 
450
            return None
486
451
        else:
487
452
            return self.tree_kind(trans_id)
488
453
 
496
461
        # the file is old; the old id is still valid
497
462
        if self._new_root == trans_id:
498
463
            return self._tree.get_root_id()
499
 
        return self._tree.inventory.path2id(path)
 
464
        return self._tree.path2id(path)
500
465
 
501
466
    def final_file_id(self, trans_id):
502
467
        """Determine the file id after any changes are applied, or None.
503
 
        
 
468
 
504
469
        None indicates that the file will not be versioned after changes are
505
470
        applied.
506
471
        """
507
472
        try:
508
 
            # there is a new id for this file
509
 
            assert self._new_id[trans_id] is not None
510
473
            return self._new_id[trans_id]
511
474
        except KeyError:
512
475
            if trans_id in self._removed_id:
547
510
 
548
511
    def by_parent(self):
549
512
        """Return a map of parent: children for known parents.
550
 
        
 
513
 
551
514
        Only new paths and parents of tree files with assigned ids are used.
552
515
        """
553
516
        by_parent = {}
554
517
        items = list(self._new_parent.iteritems())
555
 
        items.extend((t, self.final_parent(t)) for t in 
 
518
        items.extend((t, self.final_parent(t)) for t in
556
519
                      self._tree_id_paths.keys())
557
520
        for trans_id, parent_id in items:
558
521
            if parent_id not in by_parent:
569
532
 
570
533
    def find_conflicts(self):
571
534
        """Find any violations of inventory or filesystem invariants"""
572
 
        if self.__done is True:
 
535
        if self._done is True:
573
536
            raise ReusingTransform()
574
537
        conflicts = []
575
538
        # ensure all children of all existent parents are known
586
549
        conflicts.extend(self._overwrite_conflicts())
587
550
        return conflicts
588
551
 
 
552
    def _check_malformed(self):
 
553
        conflicts = self.find_conflicts()
 
554
        if len(conflicts) != 0:
 
555
            raise MalformedTransform(conflicts=conflicts)
 
556
 
589
557
    def _add_tree_children(self):
590
558
        """Add all the children of all active parents to the known paths.
591
559
 
593
561
        removed.  This is a necessary first step in detecting conflicts.
594
562
        """
595
563
        parents = self.by_parent().keys()
596
 
        parents.extend([t for t in self._removed_contents if 
 
564
        parents.extend([t for t in self._removed_contents if
597
565
                        self.tree_kind(t) == 'directory'])
598
566
        for trans_id in self._removed_id:
599
567
            file_id = self.tree_file_id(trans_id)
600
 
            if self._tree.inventory[file_id].kind == 'directory':
 
568
            if file_id is not None:
 
569
                if self._tree.stored_kind(file_id) == 'directory':
 
570
                    parents.append(trans_id)
 
571
            elif self.tree_kind(trans_id) == 'directory':
601
572
                parents.append(trans_id)
602
573
 
603
574
        for parent_id in parents:
604
575
            # ensure that all children are registered with the transaction
605
576
            list(self.iter_tree_children(parent_id))
606
577
 
607
 
    def iter_tree_children(self, parent_id):
608
 
        """Iterate through the entry's tree children, if any"""
609
 
        try:
610
 
            path = self._tree_id_paths[parent_id]
611
 
        except KeyError:
612
 
            return
613
 
        try:
614
 
            children = os.listdir(self._tree.abspath(path))
615
 
        except OSError, e:
616
 
            if e.errno != errno.ENOENT and e.errno != errno.ESRCH:
617
 
                raise
618
 
            return
619
 
            
620
 
        for child in children:
621
 
            childpath = joinpath(path, child)
622
 
            if self._tree.is_control_filename(childpath):
623
 
                continue
624
 
            yield self.trans_id_tree_path(childpath)
625
 
 
626
 
    def has_named_child(self, by_parent, parent_id, name):
627
 
        try:
628
 
            children = by_parent[parent_id]
629
 
        except KeyError:
630
 
            children = []
631
 
        for child in children:
 
578
    def _has_named_child(self, name, parent_id, known_children):
 
579
        """Does a parent already have a name child.
 
580
 
 
581
        :param name: The searched for name.
 
582
 
 
583
        :param parent_id: The parent for which the check is made.
 
584
 
 
585
        :param known_children: The already known children. This should have
 
586
            been recently obtained from `self.by_parent.get(parent_id)`
 
587
            (or will be if None is passed).
 
588
        """
 
589
        if known_children is None:
 
590
            known_children = self.by_parent().get(parent_id, [])
 
591
        for child in known_children:
632
592
            if self.final_name(child) == name:
633
593
                return True
634
 
        try:
635
 
            path = self._tree_id_paths[parent_id]
636
 
        except KeyError:
 
594
        parent_path = self._tree_id_paths.get(parent_id, None)
 
595
        if parent_path is None:
 
596
            # No parent... no children
637
597
            return False
638
 
        childpath = joinpath(path, name)
639
 
        child_id = self._tree_path_ids.get(childpath)
 
598
        child_path = joinpath(parent_path, name)
 
599
        child_id = self._tree_path_ids.get(child_path, None)
640
600
        if child_id is None:
641
 
            return lexists(self._tree.abspath(childpath))
 
601
            # Not known by the tree transform yet, check the filesystem
 
602
            return osutils.lexists(self._tree.abspath(child_path))
642
603
        else:
643
 
            if self.final_parent(child_id) != parent_id:
644
 
                return False
645
 
            if child_id in self._removed_contents:
646
 
                # XXX What about dangling file-ids?
647
 
                return False
648
 
            else:
649
 
                return True
 
604
            raise AssertionError('child_id is missing: %s, %s, %s'
 
605
                                 % (name, parent_id, child_id))
 
606
 
 
607
    def _available_backup_name(self, name, target_id):
 
608
        """Find an available backup name.
 
609
 
 
610
        :param name: The basename of the file.
 
611
 
 
612
        :param target_id: The directory trans_id where the backup should 
 
613
            be placed.
 
614
        """
 
615
        known_children = self.by_parent().get(target_id, [])
 
616
        return osutils.available_backup_name(
 
617
            name,
 
618
            lambda base: self._has_named_child(
 
619
                base, target_id, known_children))
650
620
 
651
621
    def _parent_loops(self):
652
622
        """No entry should be its own ancestor"""
654
624
        for trans_id in self._new_parent:
655
625
            seen = set()
656
626
            parent_id = trans_id
657
 
            while parent_id is not ROOT_PARENT:
 
627
            while parent_id != ROOT_PARENT:
658
628
                seen.add(parent_id)
659
629
                try:
660
630
                    parent_id = self.final_parent(parent_id)
670
640
        """If parent directories are versioned, children must be versioned."""
671
641
        conflicts = []
672
642
        for parent_id, children in by_parent.iteritems():
673
 
            if parent_id is ROOT_PARENT:
 
643
            if parent_id == ROOT_PARENT:
674
644
                continue
675
645
            if self.final_file_id(parent_id) is not None:
676
646
                continue
682
652
 
683
653
    def _improper_versioning(self):
684
654
        """Cannot version a file with no contents, or a bad type.
685
 
        
 
655
 
686
656
        However, existing entries with no contents are okay.
687
657
        """
688
658
        conflicts = []
689
659
        for trans_id in self._new_id.iterkeys():
690
 
            try:
691
 
                kind = self.final_kind(trans_id)
692
 
            except NoSuchFile:
 
660
            kind = self.final_kind(trans_id)
 
661
            if kind is None:
693
662
                conflicts.append(('versioning no contents', trans_id))
694
663
                continue
695
 
            if not InventoryEntry.versionable_kind(kind):
 
664
            if not inventory.InventoryEntry.versionable_kind(kind):
696
665
                conflicts.append(('versioning bad kind', trans_id, kind))
697
666
        return conflicts
698
667
 
699
668
    def _executability_conflicts(self):
700
669
        """Check for bad executability changes.
701
 
        
 
670
 
702
671
        Only versioned files may have their executability set, because
703
672
        1. only versioned entries can have executability under windows
704
673
        2. only files can be executable.  (The execute bit on a directory
709
678
            if self.final_file_id(trans_id) is None:
710
679
                conflicts.append(('unversioned executability', trans_id))
711
680
            else:
712
 
                try:
713
 
                    non_file = self.final_kind(trans_id) != "file"
714
 
                except NoSuchFile:
715
 
                    non_file = True
716
 
                if non_file is True:
 
681
                if self.final_kind(trans_id) != "file":
717
682
                    conflicts.append(('non-file executability', trans_id))
718
683
        return conflicts
719
684
 
721
686
        """Check for overwrites (not permitted on Win32)"""
722
687
        conflicts = []
723
688
        for trans_id in self._new_contents:
724
 
            try:
725
 
                self.tree_kind(trans_id)
726
 
            except NoSuchFile:
 
689
            if self.tree_kind(trans_id) is None:
727
690
                continue
728
691
            if trans_id not in self._removed_contents:
729
692
                conflicts.append(('overwrite', trans_id,
736
699
        if (self._new_name, self._new_parent) == ({}, {}):
737
700
            return conflicts
738
701
        for children in by_parent.itervalues():
739
 
            name_ids = [(self.final_name(t), t) for t in children]
 
702
            name_ids = []
 
703
            for child_tid in children:
 
704
                name = self.final_name(child_tid)
 
705
                if name is not None:
 
706
                    # Keep children only if they still exist in the end
 
707
                    if not self._case_sensitive_target:
 
708
                        name = name.lower()
 
709
                    name_ids.append((name, child_tid))
740
710
            name_ids.sort()
741
711
            last_name = None
742
712
            last_trans_id = None
743
713
            for name, trans_id in name_ids:
744
 
                try:
745
 
                    kind = self.final_kind(trans_id)
746
 
                except NoSuchFile:
747
 
                    kind = None
 
714
                kind = self.final_kind(trans_id)
748
715
                file_id = self.final_file_id(trans_id)
749
716
                if kind is None and file_id is None:
750
717
                    continue
760
727
        conflicts = []
761
728
        removed_tree_ids = set((self.tree_file_id(trans_id) for trans_id in
762
729
                                self._removed_id))
763
 
        active_tree_ids = set((f for f in self._tree.inventory if
764
 
                               f not in removed_tree_ids))
 
730
        all_ids = self._tree.all_file_ids()
 
731
        active_tree_ids = all_ids.difference(removed_tree_ids)
765
732
        for trans_id, file_id in self._new_id.iteritems():
766
733
            if file_id in active_tree_ids:
767
734
                old_trans_id = self.trans_id_tree_file_id(file_id)
769
736
        return conflicts
770
737
 
771
738
    def _parent_type_conflicts(self, by_parent):
772
 
        """parents must have directory 'contents'."""
 
739
        """Children must have a directory parent"""
773
740
        conflicts = []
774
741
        for parent_id, children in by_parent.iteritems():
775
 
            if parent_id is ROOT_PARENT:
776
 
                continue
777
 
            if not self._any_contents(children):
778
 
                continue
779
 
            for child in children:
780
 
                try:
781
 
                    self.final_kind(child)
782
 
                except NoSuchFile:
783
 
                    continue
784
 
            try:
785
 
                kind = self.final_kind(parent_id)
786
 
            except NoSuchFile:
787
 
                kind = None
 
742
            if parent_id == ROOT_PARENT:
 
743
                continue
 
744
            no_children = True
 
745
            for child_id in children:
 
746
                if self.final_kind(child_id) is not None:
 
747
                    no_children = False
 
748
                    break
 
749
            if no_children:
 
750
                continue
 
751
            # There is at least a child, so we need an existing directory to
 
752
            # contain it.
 
753
            kind = self.final_kind(parent_id)
788
754
            if kind is None:
 
755
                # The directory will be deleted
789
756
                conflicts.append(('missing parent', parent_id))
790
757
            elif kind != "directory":
 
758
                # Meh, we need a *directory* to put something in it
791
759
                conflicts.append(('non-directory parent', parent_id))
792
760
        return conflicts
793
761
 
794
 
    def _any_contents(self, trans_ids):
795
 
        """Return true if any of the trans_ids, will have contents."""
796
 
        for trans_id in trans_ids:
797
 
            try:
798
 
                kind = self.final_kind(trans_id)
799
 
            except NoSuchFile:
800
 
                continue
801
 
            return True
802
 
        return False
803
 
            
804
 
    def apply(self, no_conflicts=False, _mover=None):
805
 
        """Apply all changes to the inventory and filesystem.
806
 
        
807
 
        If filesystem or inventory conflicts are present, MalformedTransform
808
 
        will be thrown.
809
 
 
810
 
        If apply succeeds, finalize is not necessary.
811
 
 
812
 
        :param no_conflicts: if True, the caller guarantees there are no
813
 
            conflicts, so no check is made.
814
 
        :param _mover: Supply an alternate FileMover, for testing
815
 
        """
816
 
        if not no_conflicts:
817
 
            conflicts = self.find_conflicts()
818
 
            if len(conflicts) != 0:
819
 
                raise MalformedTransform(conflicts=conflicts)
820
 
        inv = self._tree.inventory
821
 
        inventory_delta = []
822
 
        child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
823
 
        try:
824
 
            if _mover is None:
825
 
                mover = _FileMover()
826
 
            else:
827
 
                mover = _mover
828
 
            try:
829
 
                child_pb.update('Apply phase', 0, 2)
830
 
                self._apply_removals(inv, inventory_delta, mover)
831
 
                child_pb.update('Apply phase', 1, 2)
832
 
                modified_paths = self._apply_insertions(inv, inventory_delta,
833
 
                                                        mover)
834
 
            except:
835
 
                mover.rollback()
836
 
                raise
837
 
            else:
838
 
                mover.apply_deletions()
839
 
        finally:
840
 
            child_pb.finished()
841
 
        self._tree.apply_inventory_delta(inventory_delta)
842
 
        self.__done = True
843
 
        self.finalize()
844
 
        return _TransformResults(modified_paths, self.rename_count)
845
 
 
846
 
    def _limbo_name(self, trans_id):
847
 
        """Generate the limbo name of a file"""
848
 
        limbo_name = self._limbo_files.get(trans_id)
849
 
        if limbo_name is not None:
850
 
            return limbo_name
851
 
        parent = self._new_parent.get(trans_id)
852
 
        # if the parent directory is already in limbo (e.g. when building a
853
 
        # tree), choose a limbo name inside the parent, to reduce further
854
 
        # renames.
855
 
        use_direct_path = False
856
 
        if self._new_contents.get(parent) == 'directory':
857
 
            filename = self._new_name.get(trans_id)
858
 
            if filename is not None:
859
 
                if parent not in self._limbo_children:
860
 
                    self._limbo_children[parent] = set()
861
 
                    self._limbo_children_names[parent] = {}
862
 
                    use_direct_path = True
863
 
                # the direct path can only be used if no other file has
864
 
                # already taken this pathname, i.e. if the name is unused, or
865
 
                # if it is already associated with this trans_id.
866
 
                elif (self._limbo_children_names[parent].get(filename)
867
 
                      in (trans_id, None)):
868
 
                    use_direct_path = True
869
 
        if use_direct_path:
870
 
            limbo_name = pathjoin(self._limbo_files[parent], filename)
871
 
            self._limbo_children[parent].add(trans_id)
872
 
            self._limbo_children_names[parent][filename] = trans_id
873
 
        else:
874
 
            limbo_name = pathjoin(self._limbodir, trans_id)
875
 
            self._needs_rename.add(trans_id)
876
 
        self._limbo_files[trans_id] = limbo_name
877
 
        return limbo_name
878
 
 
879
 
    def _apply_removals(self, inv, inventory_delta, mover):
880
 
        """Perform tree operations that remove directory/inventory names.
881
 
        
882
 
        That is, delete files that are to be deleted, and put any files that
883
 
        need renaming into limbo.  This must be done in strict child-to-parent
884
 
        order.
885
 
        """
886
 
        tree_paths = list(self._tree_path_ids.iteritems())
887
 
        tree_paths.sort(reverse=True)
888
 
        child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
889
 
        try:
890
 
            for num, data in enumerate(tree_paths):
891
 
                path, trans_id = data
892
 
                child_pb.update('removing file', num, len(tree_paths))
893
 
                full_path = self._tree.abspath(path)
894
 
                if trans_id in self._removed_contents:
895
 
                    mover.pre_delete(full_path, os.path.join(self._deletiondir,
896
 
                                     trans_id))
897
 
                elif trans_id in self._new_name or trans_id in \
898
 
                    self._new_parent:
899
 
                    try:
900
 
                        mover.rename(full_path, self._limbo_name(trans_id))
901
 
                    except OSError, e:
902
 
                        if e.errno != errno.ENOENT:
903
 
                            raise
904
 
                    else:
905
 
                        self.rename_count += 1
906
 
                if trans_id in self._removed_id:
907
 
                    if trans_id == self._new_root:
908
 
                        file_id = self._tree.get_root_id()
909
 
                    else:
910
 
                        file_id = self.tree_file_id(trans_id)
911
 
                    assert file_id is not None
912
 
                    inventory_delta.append((path, None, file_id, None))
913
 
        finally:
914
 
            child_pb.finished()
915
 
 
916
 
    def _apply_insertions(self, inv, inventory_delta, mover):
917
 
        """Perform tree operations that insert directory/inventory names.
918
 
        
919
 
        That is, create any files that need to be created, and restore from
920
 
        limbo any files that needed renaming.  This must be done in strict
921
 
        parent-to-child order.
922
 
        """
923
 
        new_paths = self.new_paths()
924
 
        modified_paths = []
925
 
        child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
926
 
        try:
927
 
            for num, (path, trans_id) in enumerate(new_paths):
928
 
                new_entry = None
929
 
                child_pb.update('adding file', num, len(new_paths))
930
 
                try:
931
 
                    kind = self._new_contents[trans_id]
932
 
                except KeyError:
933
 
                    kind = contents = None
934
 
                if trans_id in self._new_contents or \
935
 
                    self.path_changed(trans_id):
936
 
                    full_path = self._tree.abspath(path)
937
 
                    if trans_id in self._needs_rename:
938
 
                        try:
939
 
                            mover.rename(self._limbo_name(trans_id), full_path)
940
 
                        except OSError, e:
941
 
                            # We may be renaming a dangling inventory id
942
 
                            if e.errno != errno.ENOENT:
943
 
                                raise
944
 
                        else:
945
 
                            self.rename_count += 1
946
 
                    if trans_id in self._new_contents:
947
 
                        modified_paths.append(full_path)
948
 
                        del self._new_contents[trans_id]
949
 
 
950
 
                if trans_id in self._new_id:
951
 
                    if kind is None:
952
 
                        kind = file_kind(self._tree.abspath(path))
953
 
                    if trans_id in self._new_reference_revision:
954
 
                        new_entry = inventory.TreeReference(
955
 
                            self._new_id[trans_id],
956
 
                            self._new_name[trans_id], 
957
 
                            self.final_file_id(self._new_parent[trans_id]),
958
 
                            None, self._new_reference_revision[trans_id])
959
 
                    else:
960
 
                        new_entry = inventory.make_entry(kind,
961
 
                            self.final_name(trans_id),
962
 
                            self.final_file_id(self.final_parent(trans_id)),
963
 
                            self._new_id[trans_id])
964
 
                else:
965
 
                    if trans_id in self._new_name or trans_id in\
966
 
                        self._new_parent or\
967
 
                        trans_id in self._new_executability:
968
 
                        file_id = self.final_file_id(trans_id)
969
 
                        if file_id is not None:
970
 
                            entry = inv[file_id]
971
 
                            new_entry = entry.copy()
972
 
 
973
 
                    if trans_id in self._new_name or trans_id in\
974
 
                        self._new_parent:
975
 
                            if new_entry is not None:
976
 
                                new_entry.name = self.final_name(trans_id)
977
 
                                parent = self.final_parent(trans_id)
978
 
                                parent_id = self.final_file_id(parent)
979
 
                                new_entry.parent_id = parent_id
980
 
 
981
 
                if trans_id in self._new_executability:
982
 
                    self._set_executability(path, new_entry, trans_id)
983
 
                if new_entry is not None:
984
 
                    if new_entry.file_id in inv:
985
 
                        old_path = inv.id2path(new_entry.file_id)
986
 
                    else:
987
 
                        old_path = None
988
 
                    inventory_delta.append((old_path, path,
989
 
                                            new_entry.file_id,
990
 
                                            new_entry))
991
 
        finally:
992
 
            child_pb.finished()
993
 
        return modified_paths
994
 
 
995
 
    def _set_executability(self, path, entry, trans_id):
 
762
    def _set_executability(self, path, trans_id):
996
763
        """Set the executability of versioned files """
997
 
        new_executability = self._new_executability[trans_id]
998
 
        entry.executable = new_executability
999
 
        if supports_executable():
 
764
        if self._tree._supports_executable():
 
765
            new_executability = self._new_executability[trans_id]
1000
766
            abspath = self._tree.abspath(path)
1001
767
            current_mode = os.stat(abspath).st_mode
1002
768
            if new_executability:
1010
776
                    to_mode |= 0010 & ~umask
1011
777
            else:
1012
778
                to_mode = current_mode & ~0111
1013
 
            os.chmod(abspath, to_mode)
 
779
            osutils.chmod_if_possible(abspath, to_mode)
1014
780
 
1015
781
    def _new_entry(self, name, parent_id, file_id):
1016
782
        """Helper function to create a new filesystem entry."""
1019
785
            self.version_file(file_id, trans_id)
1020
786
        return trans_id
1021
787
 
1022
 
    def new_file(self, name, parent_id, contents, file_id=None, 
1023
 
                 executable=None):
 
788
    def new_file(self, name, parent_id, contents, file_id=None,
 
789
                 executable=None, sha1=None):
1024
790
        """Convenience method to create files.
1025
 
        
 
791
 
1026
792
        name is the name of the file to create.
1027
793
        parent_id is the transaction id of the parent directory of the file.
1028
794
        contents is an iterator of bytestrings, which will be used to produce
1033
799
        trans_id = self._new_entry(name, parent_id, file_id)
1034
800
        # TODO: rather than scheduling a set_executable call,
1035
801
        # have create_file create the file with the right mode.
1036
 
        self.create_file(contents, trans_id)
 
802
        self.create_file(contents, trans_id, sha1=sha1)
1037
803
        if executable is not None:
1038
804
            self.set_executability(executable, trans_id)
1039
805
        return trans_id
1048
814
        """
1049
815
        trans_id = self._new_entry(name, parent_id, file_id)
1050
816
        self.create_directory(trans_id)
1051
 
        return trans_id 
 
817
        return trans_id
1052
818
 
1053
819
    def new_symlink(self, name, parent_id, target, file_id=None):
1054
820
        """Convenience method to create symbolic link.
1055
 
        
 
821
 
1056
822
        name is the name of the symlink to create.
1057
823
        parent_id is the transaction id of the parent directory of the symlink.
1058
824
        target is a bytestring of the target of the symlink.
1062
828
        self.create_symlink(target, trans_id)
1063
829
        return trans_id
1064
830
 
 
831
    def new_orphan(self, trans_id, parent_id):
 
832
        """Schedule an item to be orphaned.
 
833
 
 
834
        When a directory is about to be removed, its children, if they are not
 
835
        versioned are moved out of the way: they don't have a parent anymore.
 
836
 
 
837
        :param trans_id: The trans_id of the existing item.
 
838
        :param parent_id: The parent trans_id of the item.
 
839
        """
 
840
        raise NotImplementedError(self.new_orphan)
 
841
 
 
842
    def _get_potential_orphans(self, dir_id):
 
843
        """Find the potential orphans in a directory.
 
844
 
 
845
        A directory can't be safely deleted if there are versioned files in it.
 
846
        If all the contained files are unversioned then they can be orphaned.
 
847
 
 
848
        The 'None' return value means that the directory contains at least one
 
849
        versioned file and should not be deleted.
 
850
 
 
851
        :param dir_id: The directory trans id.
 
852
 
 
853
        :return: A list of the orphan trans ids or None if at least one
 
854
             versioned file is present.
 
855
        """
 
856
        orphans = []
 
857
        # Find the potential orphans, stop if one item should be kept
 
858
        for child_tid in self.by_parent()[dir_id]:
 
859
            if child_tid in self._removed_contents:
 
860
                # The child is removed as part of the transform. Since it was
 
861
                # versioned before, it's not an orphan
 
862
                continue
 
863
            elif self.final_file_id(child_tid) is None:
 
864
                # The child is not versioned
 
865
                orphans.append(child_tid)
 
866
            else:
 
867
                # We have a versioned file here, searching for orphans is
 
868
                # meaningless.
 
869
                orphans = None
 
870
                break
 
871
        return orphans
 
872
 
1065
873
    def _affected_ids(self):
1066
874
        """Return the set of transform ids affected by the transform"""
1067
875
        trans_ids = set(self._removed_id)
1097
905
        from_path = self._tree_id_paths.get(from_trans_id)
1098
906
        if from_versioned:
1099
907
            # get data from working tree if versioned
1100
 
            from_entry = self._tree.inventory[file_id]
 
908
            from_entry = self._tree.iter_entries_by_dir([file_id]).next()[1]
1101
909
            from_name = from_entry.name
1102
910
            from_parent = from_entry.parent_id
1103
911
        else:
1126
934
        Return a (name, parent, kind, executable) tuple
1127
935
        """
1128
936
        to_name = self.final_name(to_trans_id)
1129
 
        try:
1130
 
            to_kind = self.final_kind(to_trans_id)
1131
 
        except NoSuchFile:
1132
 
            to_kind = None
 
937
        to_kind = self.final_kind(to_trans_id)
1133
938
        to_parent = self.final_file_id(self.final_parent(to_trans_id))
1134
939
        if to_trans_id in self._new_executability:
1135
940
            to_executable = self._new_executability[to_trans_id]
1139
944
            to_executable = False
1140
945
        return to_name, to_parent, to_kind, to_executable
1141
946
 
1142
 
    def _iter_changes(self):
1143
 
        """Produce output in the same format as Tree._iter_changes.
 
947
    def iter_changes(self):
 
948
        """Produce output in the same format as Tree.iter_changes.
1144
949
 
1145
950
        Will produce nonsensical results if invoked while inventory/filesystem
1146
951
        conflicts (as reported by TreeTransform.find_conflicts()) are present.
1201
1006
                   (from_executable, to_executable)))
1202
1007
        return iter(sorted(results, key=lambda x:x[1]))
1203
1008
 
 
1009
    def get_preview_tree(self):
 
1010
        """Return a tree representing the result of the transform.
 
1011
 
 
1012
        The tree is a snapshot, and altering the TreeTransform will invalidate
 
1013
        it.
 
1014
        """
 
1015
        return _PreviewTree(self)
 
1016
 
 
1017
    def commit(self, branch, message, merge_parents=None, strict=False,
 
1018
               timestamp=None, timezone=None, committer=None, authors=None,
 
1019
               revprops=None, revision_id=None):
 
1020
        """Commit the result of this TreeTransform to a branch.
 
1021
 
 
1022
        :param branch: The branch to commit to.
 
1023
        :param message: The message to attach to the commit.
 
1024
        :param merge_parents: Additional parent revision-ids specified by
 
1025
            pending merges.
 
1026
        :param strict: If True, abort the commit if there are unversioned
 
1027
            files.
 
1028
        :param timestamp: if not None, seconds-since-epoch for the time and
 
1029
            date.  (May be a float.)
 
1030
        :param timezone: Optional timezone for timestamp, as an offset in
 
1031
            seconds.
 
1032
        :param committer: Optional committer in email-id format.
 
1033
            (e.g. "J Random Hacker <jrandom@example.com>")
 
1034
        :param authors: Optional list of authors in email-id format.
 
1035
        :param revprops: Optional dictionary of revision properties.
 
1036
        :param revision_id: Optional revision id.  (Specifying a revision-id
 
1037
            may reduce performance for some non-native formats.)
 
1038
        :return: The revision_id of the revision committed.
 
1039
        """
 
1040
        self._check_malformed()
 
1041
        if strict:
 
1042
            unversioned = set(self._new_contents).difference(set(self._new_id))
 
1043
            for trans_id in unversioned:
 
1044
                if self.final_file_id(trans_id) is None:
 
1045
                    raise errors.StrictCommitFailed()
 
1046
 
 
1047
        revno, last_rev_id = branch.last_revision_info()
 
1048
        if last_rev_id == _mod_revision.NULL_REVISION:
 
1049
            if merge_parents is not None:
 
1050
                raise ValueError('Cannot supply merge parents for first'
 
1051
                                 ' commit.')
 
1052
            parent_ids = []
 
1053
        else:
 
1054
            parent_ids = [last_rev_id]
 
1055
            if merge_parents is not None:
 
1056
                parent_ids.extend(merge_parents)
 
1057
        if self._tree.get_revision_id() != last_rev_id:
 
1058
            raise ValueError('TreeTransform not based on branch basis: %s' %
 
1059
                             self._tree.get_revision_id())
 
1060
        revprops = commit.Commit.update_revprops(revprops, branch, authors)
 
1061
        builder = branch.get_commit_builder(parent_ids,
 
1062
                                            timestamp=timestamp,
 
1063
                                            timezone=timezone,
 
1064
                                            committer=committer,
 
1065
                                            revprops=revprops,
 
1066
                                            revision_id=revision_id)
 
1067
        preview = self.get_preview_tree()
 
1068
        list(builder.record_iter_changes(preview, last_rev_id,
 
1069
                                         self.iter_changes()))
 
1070
        builder.finish_inventory()
 
1071
        revision_id = builder.commit(message)
 
1072
        branch.set_last_revision_info(revno + 1, revision_id)
 
1073
        return revision_id
 
1074
 
 
1075
    def _text_parent(self, trans_id):
 
1076
        file_id = self.tree_file_id(trans_id)
 
1077
        try:
 
1078
            if file_id is None or self._tree.kind(file_id) != 'file':
 
1079
                return None
 
1080
        except errors.NoSuchFile:
 
1081
            return None
 
1082
        return file_id
 
1083
 
 
1084
    def _get_parents_texts(self, trans_id):
 
1085
        """Get texts for compression parents of this file."""
 
1086
        file_id = self._text_parent(trans_id)
 
1087
        if file_id is None:
 
1088
            return ()
 
1089
        return (self._tree.get_file_text(file_id),)
 
1090
 
 
1091
    def _get_parents_lines(self, trans_id):
 
1092
        """Get lines for compression parents of this file."""
 
1093
        file_id = self._text_parent(trans_id)
 
1094
        if file_id is None:
 
1095
            return ()
 
1096
        return (self._tree.get_file_lines(file_id),)
 
1097
 
 
1098
    def serialize(self, serializer):
 
1099
        """Serialize this TreeTransform.
 
1100
 
 
1101
        :param serializer: A Serialiser like pack.ContainerSerializer.
 
1102
        """
 
1103
        new_name = dict((k, v.encode('utf-8')) for k, v in
 
1104
                        self._new_name.items())
 
1105
        new_executability = dict((k, int(v)) for k, v in
 
1106
                                 self._new_executability.items())
 
1107
        tree_path_ids = dict((k.encode('utf-8'), v)
 
1108
                             for k, v in self._tree_path_ids.items())
 
1109
        attribs = {
 
1110
            '_id_number': self._id_number,
 
1111
            '_new_name': new_name,
 
1112
            '_new_parent': self._new_parent,
 
1113
            '_new_executability': new_executability,
 
1114
            '_new_id': self._new_id,
 
1115
            '_tree_path_ids': tree_path_ids,
 
1116
            '_removed_id': list(self._removed_id),
 
1117
            '_removed_contents': list(self._removed_contents),
 
1118
            '_non_present_ids': self._non_present_ids,
 
1119
            }
 
1120
        yield serializer.bytes_record(bencode.bencode(attribs),
 
1121
                                      (('attribs',),))
 
1122
        for trans_id, kind in self._new_contents.items():
 
1123
            if kind == 'file':
 
1124
                lines = osutils.chunks_to_lines(
 
1125
                    self._read_file_chunks(trans_id))
 
1126
                parents = self._get_parents_lines(trans_id)
 
1127
                mpdiff = multiparent.MultiParent.from_lines(lines, parents)
 
1128
                content = ''.join(mpdiff.to_patch())
 
1129
            if kind == 'directory':
 
1130
                content = ''
 
1131
            if kind == 'symlink':
 
1132
                content = self._read_symlink_target(trans_id)
 
1133
            yield serializer.bytes_record(content, ((trans_id, kind),))
 
1134
 
 
1135
    def deserialize(self, records):
 
1136
        """Deserialize a stored TreeTransform.
 
1137
 
 
1138
        :param records: An iterable of (names, content) tuples, as per
 
1139
            pack.ContainerPushParser.
 
1140
        """
 
1141
        names, content = records.next()
 
1142
        attribs = bencode.bdecode(content)
 
1143
        self._id_number = attribs['_id_number']
 
1144
        self._new_name = dict((k, v.decode('utf-8'))
 
1145
                            for k, v in attribs['_new_name'].items())
 
1146
        self._new_parent = attribs['_new_parent']
 
1147
        self._new_executability = dict((k, bool(v)) for k, v in
 
1148
            attribs['_new_executability'].items())
 
1149
        self._new_id = attribs['_new_id']
 
1150
        self._r_new_id = dict((v, k) for k, v in self._new_id.items())
 
1151
        self._tree_path_ids = {}
 
1152
        self._tree_id_paths = {}
 
1153
        for bytepath, trans_id in attribs['_tree_path_ids'].items():
 
1154
            path = bytepath.decode('utf-8')
 
1155
            self._tree_path_ids[path] = trans_id
 
1156
            self._tree_id_paths[trans_id] = path
 
1157
        self._removed_id = set(attribs['_removed_id'])
 
1158
        self._removed_contents = set(attribs['_removed_contents'])
 
1159
        self._non_present_ids = attribs['_non_present_ids']
 
1160
        for ((trans_id, kind),), content in records:
 
1161
            if kind == 'file':
 
1162
                mpdiff = multiparent.MultiParent.from_patch(content)
 
1163
                lines = mpdiff.to_lines(self._get_parents_texts(trans_id))
 
1164
                self.create_file(lines, trans_id)
 
1165
            if kind == 'directory':
 
1166
                self.create_directory(trans_id)
 
1167
            if kind == 'symlink':
 
1168
                self.create_symlink(content.decode('utf-8'), trans_id)
 
1169
 
 
1170
 
 
1171
class DiskTreeTransform(TreeTransformBase):
 
1172
    """Tree transform storing its contents on disk."""
 
1173
 
 
1174
    def __init__(self, tree, limbodir, pb=None,
 
1175
                 case_sensitive=True):
 
1176
        """Constructor.
 
1177
        :param tree: The tree that will be transformed, but not necessarily
 
1178
            the output tree.
 
1179
        :param limbodir: A directory where new files can be stored until
 
1180
            they are installed in their proper places
 
1181
        :param pb: ignored
 
1182
        :param case_sensitive: If True, the target of the transform is
 
1183
            case sensitive, not just case preserving.
 
1184
        """
 
1185
        TreeTransformBase.__init__(self, tree, pb, case_sensitive)
 
1186
        self._limbodir = limbodir
 
1187
        self._deletiondir = None
 
1188
        # A mapping of transform ids to their limbo filename
 
1189
        self._limbo_files = {}
 
1190
        self._possibly_stale_limbo_files = set()
 
1191
        # A mapping of transform ids to a set of the transform ids of children
 
1192
        # that their limbo directory has
 
1193
        self._limbo_children = {}
 
1194
        # Map transform ids to maps of child filename to child transform id
 
1195
        self._limbo_children_names = {}
 
1196
        # List of transform ids that need to be renamed from limbo into place
 
1197
        self._needs_rename = set()
 
1198
        self._creation_mtime = None
 
1199
 
 
1200
    def finalize(self):
 
1201
        """Release the working tree lock, if held, clean up limbo dir.
 
1202
 
 
1203
        This is required if apply has not been invoked, but can be invoked
 
1204
        even after apply.
 
1205
        """
 
1206
        if self._tree is None:
 
1207
            return
 
1208
        try:
 
1209
            limbo_paths = self._limbo_files.values() + list(
 
1210
                self._possibly_stale_limbo_files)
 
1211
            limbo_paths = sorted(limbo_paths, reverse=True)
 
1212
            for path in limbo_paths:
 
1213
                try:
 
1214
                    delete_any(path)
 
1215
                except OSError, e:
 
1216
                    if e.errno != errno.ENOENT:
 
1217
                        raise
 
1218
                    # XXX: warn? perhaps we just got interrupted at an
 
1219
                    # inconvenient moment, but perhaps files are disappearing
 
1220
                    # from under us?
 
1221
            try:
 
1222
                delete_any(self._limbodir)
 
1223
            except OSError:
 
1224
                # We don't especially care *why* the dir is immortal.
 
1225
                raise ImmortalLimbo(self._limbodir)
 
1226
            try:
 
1227
                if self._deletiondir is not None:
 
1228
                    delete_any(self._deletiondir)
 
1229
            except OSError:
 
1230
                raise errors.ImmortalPendingDeletion(self._deletiondir)
 
1231
        finally:
 
1232
            TreeTransformBase.finalize(self)
 
1233
 
 
1234
    def _limbo_supports_executable(self):
 
1235
        """Check if the limbo path supports the executable bit."""
 
1236
        # FIXME: Check actual file system capabilities of limbodir
 
1237
        return osutils.supports_executable()
 
1238
 
 
1239
    def _limbo_name(self, trans_id):
 
1240
        """Generate the limbo name of a file"""
 
1241
        limbo_name = self._limbo_files.get(trans_id)
 
1242
        if limbo_name is None:
 
1243
            limbo_name = self._generate_limbo_path(trans_id)
 
1244
            self._limbo_files[trans_id] = limbo_name
 
1245
        return limbo_name
 
1246
 
 
1247
    def _generate_limbo_path(self, trans_id):
 
1248
        """Generate a limbo path using the trans_id as the relative path.
 
1249
 
 
1250
        This is suitable as a fallback, and when the transform should not be
 
1251
        sensitive to the path encoding of the limbo directory.
 
1252
        """
 
1253
        self._needs_rename.add(trans_id)
 
1254
        return pathjoin(self._limbodir, trans_id)
 
1255
 
 
1256
    def adjust_path(self, name, parent, trans_id):
 
1257
        previous_parent = self._new_parent.get(trans_id)
 
1258
        previous_name = self._new_name.get(trans_id)
 
1259
        TreeTransformBase.adjust_path(self, name, parent, trans_id)
 
1260
        if (trans_id in self._limbo_files and
 
1261
            trans_id not in self._needs_rename):
 
1262
            self._rename_in_limbo([trans_id])
 
1263
            if previous_parent != parent:
 
1264
                self._limbo_children[previous_parent].remove(trans_id)
 
1265
            if previous_parent != parent or previous_name != name:
 
1266
                del self._limbo_children_names[previous_parent][previous_name]
 
1267
 
 
1268
    def _rename_in_limbo(self, trans_ids):
 
1269
        """Fix limbo names so that the right final path is produced.
 
1270
 
 
1271
        This means we outsmarted ourselves-- we tried to avoid renaming
 
1272
        these files later by creating them with their final names in their
 
1273
        final parents.  But now the previous name or parent is no longer
 
1274
        suitable, so we have to rename them.
 
1275
 
 
1276
        Even for trans_ids that have no new contents, we must remove their
 
1277
        entries from _limbo_files, because they are now stale.
 
1278
        """
 
1279
        for trans_id in trans_ids:
 
1280
            old_path = self._limbo_files[trans_id]
 
1281
            self._possibly_stale_limbo_files.add(old_path)
 
1282
            del self._limbo_files[trans_id]
 
1283
            if trans_id not in self._new_contents:
 
1284
                continue
 
1285
            new_path = self._limbo_name(trans_id)
 
1286
            os.rename(old_path, new_path)
 
1287
            self._possibly_stale_limbo_files.remove(old_path)
 
1288
            for descendant in self._limbo_descendants(trans_id):
 
1289
                desc_path = self._limbo_files[descendant]
 
1290
                desc_path = new_path + desc_path[len(old_path):]
 
1291
                self._limbo_files[descendant] = desc_path
 
1292
 
 
1293
    def _limbo_descendants(self, trans_id):
 
1294
        """Return the set of trans_ids whose limbo paths descend from this."""
 
1295
        descendants = set(self._limbo_children.get(trans_id, []))
 
1296
        for descendant in list(descendants):
 
1297
            descendants.update(self._limbo_descendants(descendant))
 
1298
        return descendants
 
1299
 
 
1300
    def create_file(self, contents, trans_id, mode_id=None, sha1=None):
 
1301
        """Schedule creation of a new file.
 
1302
 
 
1303
        :seealso: new_file.
 
1304
 
 
1305
        :param contents: an iterator of strings, all of which will be written
 
1306
            to the target destination.
 
1307
        :param trans_id: TreeTransform handle
 
1308
        :param mode_id: If not None, force the mode of the target file to match
 
1309
            the mode of the object referenced by mode_id.
 
1310
            Otherwise, we will try to preserve mode bits of an existing file.
 
1311
        :param sha1: If the sha1 of this content is already known, pass it in.
 
1312
            We can use it to prevent future sha1 computations.
 
1313
        """
 
1314
        name = self._limbo_name(trans_id)
 
1315
        f = open(name, 'wb')
 
1316
        try:
 
1317
            unique_add(self._new_contents, trans_id, 'file')
 
1318
            f.writelines(contents)
 
1319
        finally:
 
1320
            f.close()
 
1321
        self._set_mtime(name)
 
1322
        self._set_mode(trans_id, mode_id, S_ISREG)
 
1323
        # It is unfortunate we have to use lstat instead of fstat, but we just
 
1324
        # used utime and chmod on the file, so we need the accurate final
 
1325
        # details.
 
1326
        if sha1 is not None:
 
1327
            self._observed_sha1s[trans_id] = (sha1, osutils.lstat(name))
 
1328
 
 
1329
    def _read_file_chunks(self, trans_id):
 
1330
        cur_file = open(self._limbo_name(trans_id), 'rb')
 
1331
        try:
 
1332
            return cur_file.readlines()
 
1333
        finally:
 
1334
            cur_file.close()
 
1335
 
 
1336
    def _read_symlink_target(self, trans_id):
 
1337
        return os.readlink(self._limbo_name(trans_id))
 
1338
 
 
1339
    def _set_mtime(self, path):
 
1340
        """All files that are created get the same mtime.
 
1341
 
 
1342
        This time is set by the first object to be created.
 
1343
        """
 
1344
        if self._creation_mtime is None:
 
1345
            self._creation_mtime = time.time()
 
1346
        os.utime(path, (self._creation_mtime, self._creation_mtime))
 
1347
 
 
1348
    def create_hardlink(self, path, trans_id):
 
1349
        """Schedule creation of a hard link"""
 
1350
        name = self._limbo_name(trans_id)
 
1351
        try:
 
1352
            os.link(path, name)
 
1353
        except OSError, e:
 
1354
            if e.errno != errno.EPERM:
 
1355
                raise
 
1356
            raise errors.HardLinkNotSupported(path)
 
1357
        try:
 
1358
            unique_add(self._new_contents, trans_id, 'file')
 
1359
        except:
 
1360
            # Clean up the file, it never got registered so
 
1361
            # TreeTransform.finalize() won't clean it up.
 
1362
            os.unlink(name)
 
1363
            raise
 
1364
 
 
1365
    def create_directory(self, trans_id):
 
1366
        """Schedule creation of a new directory.
 
1367
 
 
1368
        See also new_directory.
 
1369
        """
 
1370
        os.mkdir(self._limbo_name(trans_id))
 
1371
        unique_add(self._new_contents, trans_id, 'directory')
 
1372
 
 
1373
    def create_symlink(self, target, trans_id):
 
1374
        """Schedule creation of a new symbolic link.
 
1375
 
 
1376
        target is a bytestring.
 
1377
        See also new_symlink.
 
1378
        """
 
1379
        if has_symlinks():
 
1380
            os.symlink(target, self._limbo_name(trans_id))
 
1381
            unique_add(self._new_contents, trans_id, 'symlink')
 
1382
        else:
 
1383
            try:
 
1384
                path = FinalPaths(self).get_path(trans_id)
 
1385
            except KeyError:
 
1386
                path = None
 
1387
            raise UnableCreateSymlink(path=path)
 
1388
 
 
1389
    def cancel_creation(self, trans_id):
 
1390
        """Cancel the creation of new file contents."""
 
1391
        del self._new_contents[trans_id]
 
1392
        if trans_id in self._observed_sha1s:
 
1393
            del self._observed_sha1s[trans_id]
 
1394
        children = self._limbo_children.get(trans_id)
 
1395
        # if this is a limbo directory with children, move them before removing
 
1396
        # the directory
 
1397
        if children is not None:
 
1398
            self._rename_in_limbo(children)
 
1399
            del self._limbo_children[trans_id]
 
1400
            del self._limbo_children_names[trans_id]
 
1401
        delete_any(self._limbo_name(trans_id))
 
1402
 
 
1403
    def new_orphan(self, trans_id, parent_id):
 
1404
        conf = self._tree.get_config_stack()
 
1405
        handle_orphan = conf.get('bzr.transform.orphan_policy')
 
1406
        handle_orphan(self, trans_id, parent_id)
 
1407
 
 
1408
 
 
1409
class OrphaningError(errors.BzrError):
 
1410
 
 
1411
    # Only bugs could lead to such exception being seen by the user
 
1412
    internal_error = True
 
1413
    _fmt = "Error while orphaning %s in %s directory"
 
1414
 
 
1415
    def __init__(self, orphan, parent):
 
1416
        errors.BzrError.__init__(self)
 
1417
        self.orphan = orphan
 
1418
        self.parent = parent
 
1419
 
 
1420
 
 
1421
class OrphaningForbidden(OrphaningError):
 
1422
 
 
1423
    _fmt = "Policy: %s doesn't allow creating orphans."
 
1424
 
 
1425
    def __init__(self, policy):
 
1426
        errors.BzrError.__init__(self)
 
1427
        self.policy = policy
 
1428
 
 
1429
 
 
1430
def move_orphan(tt, orphan_id, parent_id):
 
1431
    """See TreeTransformBase.new_orphan.
 
1432
 
 
1433
    This creates a new orphan in the `bzr-orphans` dir at the root of the
 
1434
    `TreeTransform`.
 
1435
 
 
1436
    :param tt: The TreeTransform orphaning `trans_id`.
 
1437
 
 
1438
    :param orphan_id: The trans id that should be orphaned.
 
1439
 
 
1440
    :param parent_id: The orphan parent trans id.
 
1441
    """
 
1442
    # Add the orphan dir if it doesn't exist
 
1443
    orphan_dir_basename = 'bzr-orphans'
 
1444
    od_id = tt.trans_id_tree_path(orphan_dir_basename)
 
1445
    if tt.final_kind(od_id) is None:
 
1446
        tt.create_directory(od_id)
 
1447
    parent_path = tt._tree_id_paths[parent_id]
 
1448
    # Find a name that doesn't exist yet in the orphan dir
 
1449
    actual_name = tt.final_name(orphan_id)
 
1450
    new_name = tt._available_backup_name(actual_name, od_id)
 
1451
    tt.adjust_path(new_name, od_id, orphan_id)
 
1452
    trace.warning('%s has been orphaned in %s'
 
1453
                  % (joinpath(parent_path, actual_name), orphan_dir_basename))
 
1454
 
 
1455
 
 
1456
def refuse_orphan(tt, orphan_id, parent_id):
 
1457
    """See TreeTransformBase.new_orphan.
 
1458
 
 
1459
    This refuses to create orphan, letting the caller handle the conflict.
 
1460
    """
 
1461
    raise OrphaningForbidden('never')
 
1462
 
 
1463
 
 
1464
orphaning_registry = registry.Registry()
 
1465
orphaning_registry.register(
 
1466
    'conflict', refuse_orphan,
 
1467
    'Leave orphans in place and create a conflict on the directory.')
 
1468
orphaning_registry.register(
 
1469
    'move', move_orphan,
 
1470
    'Move orphans into the bzr-orphans directory.')
 
1471
orphaning_registry._set_default_key('conflict')
 
1472
 
 
1473
 
 
1474
opt_transform_orphan = _mod_config.RegistryOption(
 
1475
    'bzr.transform.orphan_policy', orphaning_registry,
 
1476
    help='Policy for orphaned files during transform operations.',
 
1477
    invalid='warning')
 
1478
 
 
1479
 
 
1480
class TreeTransform(DiskTreeTransform):
 
1481
    """Represent a tree transformation.
 
1482
 
 
1483
    This object is designed to support incremental generation of the transform,
 
1484
    in any order.
 
1485
 
 
1486
    However, it gives optimum performance when parent directories are created
 
1487
    before their contents.  The transform is then able to put child files
 
1488
    directly in their parent directory, avoiding later renames.
 
1489
 
 
1490
    It is easy to produce malformed transforms, but they are generally
 
1491
    harmless.  Attempting to apply a malformed transform will cause an
 
1492
    exception to be raised before any modifications are made to the tree.
 
1493
 
 
1494
    Many kinds of malformed transforms can be corrected with the
 
1495
    resolve_conflicts function.  The remaining ones indicate programming error,
 
1496
    such as trying to create a file with no path.
 
1497
 
 
1498
    Two sets of file creation methods are supplied.  Convenience methods are:
 
1499
     * new_file
 
1500
     * new_directory
 
1501
     * new_symlink
 
1502
 
 
1503
    These are composed of the low-level methods:
 
1504
     * create_path
 
1505
     * create_file or create_directory or create_symlink
 
1506
     * version_file
 
1507
     * set_executability
 
1508
 
 
1509
    Transform/Transaction ids
 
1510
    -------------------------
 
1511
    trans_ids are temporary ids assigned to all files involved in a transform.
 
1512
    It's possible, even common, that not all files in the Tree have trans_ids.
 
1513
 
 
1514
    trans_ids are used because filenames and file_ids are not good enough
 
1515
    identifiers; filenames change, and not all files have file_ids.  File-ids
 
1516
    are also associated with trans-ids, so that moving a file moves its
 
1517
    file-id.
 
1518
 
 
1519
    trans_ids are only valid for the TreeTransform that generated them.
 
1520
 
 
1521
    Limbo
 
1522
    -----
 
1523
    Limbo is a temporary directory use to hold new versions of files.
 
1524
    Files are added to limbo by create_file, create_directory, create_symlink,
 
1525
    and their convenience variants (new_*).  Files may be removed from limbo
 
1526
    using cancel_creation.  Files are renamed from limbo into their final
 
1527
    location as part of TreeTransform.apply
 
1528
 
 
1529
    Limbo must be cleaned up, by either calling TreeTransform.apply or
 
1530
    calling TreeTransform.finalize.
 
1531
 
 
1532
    Files are placed into limbo inside their parent directories, where
 
1533
    possible.  This reduces subsequent renames, and makes operations involving
 
1534
    lots of files faster.  This optimization is only possible if the parent
 
1535
    directory is created *before* creating any of its children, so avoid
 
1536
    creating children before parents, where possible.
 
1537
 
 
1538
    Pending-deletion
 
1539
    ----------------
 
1540
    This temporary directory is used by _FileMover for storing files that are
 
1541
    about to be deleted.  In case of rollback, the files will be restored.
 
1542
    FileMover does not delete files until it is sure that a rollback will not
 
1543
    happen.
 
1544
    """
 
1545
    def __init__(self, tree, pb=None):
 
1546
        """Note: a tree_write lock is taken on the tree.
 
1547
 
 
1548
        Use TreeTransform.finalize() to release the lock (can be omitted if
 
1549
        TreeTransform.apply() called).
 
1550
        """
 
1551
        tree.lock_tree_write()
 
1552
 
 
1553
        try:
 
1554
            limbodir = urlutils.local_path_from_url(
 
1555
                tree._transport.abspath('limbo'))
 
1556
            osutils.ensure_empty_directory_exists(
 
1557
                limbodir,
 
1558
                errors.ExistingLimbo)
 
1559
            deletiondir = urlutils.local_path_from_url(
 
1560
                tree._transport.abspath('pending-deletion'))
 
1561
            osutils.ensure_empty_directory_exists(
 
1562
                deletiondir,
 
1563
                errors.ExistingPendingDeletion)
 
1564
        except:
 
1565
            tree.unlock()
 
1566
            raise
 
1567
 
 
1568
        # Cache of realpath results, to speed up canonical_path
 
1569
        self._realpaths = {}
 
1570
        # Cache of relpath results, to speed up canonical_path
 
1571
        self._relpaths = {}
 
1572
        DiskTreeTransform.__init__(self, tree, limbodir, pb,
 
1573
                                   tree.case_sensitive)
 
1574
        self._deletiondir = deletiondir
 
1575
 
 
1576
    def canonical_path(self, path):
 
1577
        """Get the canonical tree-relative path"""
 
1578
        # don't follow final symlinks
 
1579
        abs = self._tree.abspath(path)
 
1580
        if abs in self._relpaths:
 
1581
            return self._relpaths[abs]
 
1582
        dirname, basename = os.path.split(abs)
 
1583
        if dirname not in self._realpaths:
 
1584
            self._realpaths[dirname] = os.path.realpath(dirname)
 
1585
        dirname = self._realpaths[dirname]
 
1586
        abs = pathjoin(dirname, basename)
 
1587
        if dirname in self._relpaths:
 
1588
            relpath = pathjoin(self._relpaths[dirname], basename)
 
1589
            relpath = relpath.rstrip('/\\')
 
1590
        else:
 
1591
            relpath = self._tree.relpath(abs)
 
1592
        self._relpaths[abs] = relpath
 
1593
        return relpath
 
1594
 
 
1595
    def tree_kind(self, trans_id):
 
1596
        """Determine the file kind in the working tree.
 
1597
 
 
1598
        :returns: The file kind or None if the file does not exist
 
1599
        """
 
1600
        path = self._tree_id_paths.get(trans_id)
 
1601
        if path is None:
 
1602
            return None
 
1603
        try:
 
1604
            return file_kind(self._tree.abspath(path))
 
1605
        except errors.NoSuchFile:
 
1606
            return None
 
1607
 
 
1608
    def _set_mode(self, trans_id, mode_id, typefunc):
 
1609
        """Set the mode of new file contents.
 
1610
        The mode_id is the existing file to get the mode from (often the same
 
1611
        as trans_id).  The operation is only performed if there's a mode match
 
1612
        according to typefunc.
 
1613
        """
 
1614
        if mode_id is None:
 
1615
            mode_id = trans_id
 
1616
        try:
 
1617
            old_path = self._tree_id_paths[mode_id]
 
1618
        except KeyError:
 
1619
            return
 
1620
        try:
 
1621
            mode = os.stat(self._tree.abspath(old_path)).st_mode
 
1622
        except OSError, e:
 
1623
            if e.errno in (errno.ENOENT, errno.ENOTDIR):
 
1624
                # Either old_path doesn't exist, or the parent of the
 
1625
                # target is not a directory (but will be one eventually)
 
1626
                # Either way, we know it doesn't exist *right now*
 
1627
                # See also bug #248448
 
1628
                return
 
1629
            else:
 
1630
                raise
 
1631
        if typefunc(mode):
 
1632
            osutils.chmod_if_possible(self._limbo_name(trans_id), mode)
 
1633
 
 
1634
    def iter_tree_children(self, parent_id):
 
1635
        """Iterate through the entry's tree children, if any"""
 
1636
        try:
 
1637
            path = self._tree_id_paths[parent_id]
 
1638
        except KeyError:
 
1639
            return
 
1640
        try:
 
1641
            children = os.listdir(self._tree.abspath(path))
 
1642
        except OSError, e:
 
1643
            if not (osutils._is_error_enotdir(e)
 
1644
                    or e.errno in (errno.ENOENT, errno.ESRCH)):
 
1645
                raise
 
1646
            return
 
1647
 
 
1648
        for child in children:
 
1649
            childpath = joinpath(path, child)
 
1650
            if self._tree.is_control_filename(childpath):
 
1651
                continue
 
1652
            yield self.trans_id_tree_path(childpath)
 
1653
 
 
1654
    def _generate_limbo_path(self, trans_id):
 
1655
        """Generate a limbo path using the final path if possible.
 
1656
 
 
1657
        This optimizes the performance of applying the tree transform by
 
1658
        avoiding renames.  These renames can be avoided only when the parent
 
1659
        directory is already scheduled for creation.
 
1660
 
 
1661
        If the final path cannot be used, falls back to using the trans_id as
 
1662
        the relpath.
 
1663
        """
 
1664
        parent = self._new_parent.get(trans_id)
 
1665
        # if the parent directory is already in limbo (e.g. when building a
 
1666
        # tree), choose a limbo name inside the parent, to reduce further
 
1667
        # renames.
 
1668
        use_direct_path = False
 
1669
        if self._new_contents.get(parent) == 'directory':
 
1670
            filename = self._new_name.get(trans_id)
 
1671
            if filename is not None:
 
1672
                if parent not in self._limbo_children:
 
1673
                    self._limbo_children[parent] = set()
 
1674
                    self._limbo_children_names[parent] = {}
 
1675
                    use_direct_path = True
 
1676
                # the direct path can only be used if no other file has
 
1677
                # already taken this pathname, i.e. if the name is unused, or
 
1678
                # if it is already associated with this trans_id.
 
1679
                elif self._case_sensitive_target:
 
1680
                    if (self._limbo_children_names[parent].get(filename)
 
1681
                        in (trans_id, None)):
 
1682
                        use_direct_path = True
 
1683
                else:
 
1684
                    for l_filename, l_trans_id in\
 
1685
                        self._limbo_children_names[parent].iteritems():
 
1686
                        if l_trans_id == trans_id:
 
1687
                            continue
 
1688
                        if l_filename.lower() == filename.lower():
 
1689
                            break
 
1690
                    else:
 
1691
                        use_direct_path = True
 
1692
 
 
1693
        if not use_direct_path:
 
1694
            return DiskTreeTransform._generate_limbo_path(self, trans_id)
 
1695
 
 
1696
        limbo_name = pathjoin(self._limbo_files[parent], filename)
 
1697
        self._limbo_children[parent].add(trans_id)
 
1698
        self._limbo_children_names[parent][filename] = trans_id
 
1699
        return limbo_name
 
1700
 
 
1701
 
 
1702
    def apply(self, no_conflicts=False, precomputed_delta=None, _mover=None):
 
1703
        """Apply all changes to the inventory and filesystem.
 
1704
 
 
1705
        If filesystem or inventory conflicts are present, MalformedTransform
 
1706
        will be thrown.
 
1707
 
 
1708
        If apply succeeds, finalize is not necessary.
 
1709
 
 
1710
        :param no_conflicts: if True, the caller guarantees there are no
 
1711
            conflicts, so no check is made.
 
1712
        :param precomputed_delta: An inventory delta to use instead of
 
1713
            calculating one.
 
1714
        :param _mover: Supply an alternate FileMover, for testing
 
1715
        """
 
1716
        for hook in MutableTree.hooks['pre_transform']:
 
1717
            hook(self._tree, self)
 
1718
        if not no_conflicts:
 
1719
            self._check_malformed()
 
1720
        child_pb = ui.ui_factory.nested_progress_bar()
 
1721
        try:
 
1722
            if precomputed_delta is None:
 
1723
                child_pb.update(gettext('Apply phase'), 0, 2)
 
1724
                inventory_delta = self._generate_inventory_delta()
 
1725
                offset = 1
 
1726
            else:
 
1727
                inventory_delta = precomputed_delta
 
1728
                offset = 0
 
1729
            if _mover is None:
 
1730
                mover = _FileMover()
 
1731
            else:
 
1732
                mover = _mover
 
1733
            try:
 
1734
                child_pb.update(gettext('Apply phase'), 0 + offset, 2 + offset)
 
1735
                self._apply_removals(mover)
 
1736
                child_pb.update(gettext('Apply phase'), 1 + offset, 2 + offset)
 
1737
                modified_paths = self._apply_insertions(mover)
 
1738
            except:
 
1739
                mover.rollback()
 
1740
                raise
 
1741
            else:
 
1742
                mover.apply_deletions()
 
1743
        finally:
 
1744
            child_pb.finished()
 
1745
        if self.final_file_id(self.root) is None:
 
1746
            inventory_delta = [e for e in inventory_delta if e[0] != '']
 
1747
        self._tree.apply_inventory_delta(inventory_delta)
 
1748
        self._apply_observed_sha1s()
 
1749
        self._done = True
 
1750
        self.finalize()
 
1751
        return _TransformResults(modified_paths, self.rename_count)
 
1752
 
 
1753
    def _generate_inventory_delta(self):
 
1754
        """Generate an inventory delta for the current transform."""
 
1755
        inventory_delta = []
 
1756
        child_pb = ui.ui_factory.nested_progress_bar()
 
1757
        new_paths = self._inventory_altered()
 
1758
        total_entries = len(new_paths) + len(self._removed_id)
 
1759
        try:
 
1760
            for num, trans_id in enumerate(self._removed_id):
 
1761
                if (num % 10) == 0:
 
1762
                    child_pb.update(gettext('removing file'), num, total_entries)
 
1763
                if trans_id == self._new_root:
 
1764
                    file_id = self._tree.get_root_id()
 
1765
                else:
 
1766
                    file_id = self.tree_file_id(trans_id)
 
1767
                # File-id isn't really being deleted, just moved
 
1768
                if file_id in self._r_new_id:
 
1769
                    continue
 
1770
                path = self._tree_id_paths[trans_id]
 
1771
                inventory_delta.append((path, None, file_id, None))
 
1772
            new_path_file_ids = dict((t, self.final_file_id(t)) for p, t in
 
1773
                                     new_paths)
 
1774
            entries = self._tree.iter_entries_by_dir(
 
1775
                new_path_file_ids.values())
 
1776
            old_paths = dict((e.file_id, p) for p, e in entries)
 
1777
            final_kinds = {}
 
1778
            for num, (path, trans_id) in enumerate(new_paths):
 
1779
                if (num % 10) == 0:
 
1780
                    child_pb.update(gettext('adding file'),
 
1781
                                    num + len(self._removed_id), total_entries)
 
1782
                file_id = new_path_file_ids[trans_id]
 
1783
                if file_id is None:
 
1784
                    continue
 
1785
                needs_entry = False
 
1786
                kind = self.final_kind(trans_id)
 
1787
                if kind is None:
 
1788
                    kind = self._tree.stored_kind(file_id)
 
1789
                parent_trans_id = self.final_parent(trans_id)
 
1790
                parent_file_id = new_path_file_ids.get(parent_trans_id)
 
1791
                if parent_file_id is None:
 
1792
                    parent_file_id = self.final_file_id(parent_trans_id)
 
1793
                if trans_id in self._new_reference_revision:
 
1794
                    new_entry = inventory.TreeReference(
 
1795
                        file_id,
 
1796
                        self._new_name[trans_id],
 
1797
                        self.final_file_id(self._new_parent[trans_id]),
 
1798
                        None, self._new_reference_revision[trans_id])
 
1799
                else:
 
1800
                    new_entry = inventory.make_entry(kind,
 
1801
                        self.final_name(trans_id),
 
1802
                        parent_file_id, file_id)
 
1803
                old_path = old_paths.get(new_entry.file_id)
 
1804
                new_executability = self._new_executability.get(trans_id)
 
1805
                if new_executability is not None:
 
1806
                    new_entry.executable = new_executability
 
1807
                inventory_delta.append(
 
1808
                    (old_path, path, new_entry.file_id, new_entry))
 
1809
        finally:
 
1810
            child_pb.finished()
 
1811
        return inventory_delta
 
1812
 
 
1813
    def _apply_removals(self, mover):
 
1814
        """Perform tree operations that remove directory/inventory names.
 
1815
 
 
1816
        That is, delete files that are to be deleted, and put any files that
 
1817
        need renaming into limbo.  This must be done in strict child-to-parent
 
1818
        order.
 
1819
 
 
1820
        If inventory_delta is None, no inventory delta generation is performed.
 
1821
        """
 
1822
        tree_paths = list(self._tree_path_ids.iteritems())
 
1823
        tree_paths.sort(reverse=True)
 
1824
        child_pb = ui.ui_factory.nested_progress_bar()
 
1825
        try:
 
1826
            for num, (path, trans_id) in enumerate(tree_paths):
 
1827
                # do not attempt to move root into a subdirectory of itself.
 
1828
                if path == '':
 
1829
                    continue
 
1830
                child_pb.update(gettext('removing file'), num, len(tree_paths))
 
1831
                full_path = self._tree.abspath(path)
 
1832
                if trans_id in self._removed_contents:
 
1833
                    delete_path = os.path.join(self._deletiondir, trans_id)
 
1834
                    mover.pre_delete(full_path, delete_path)
 
1835
                elif (trans_id in self._new_name
 
1836
                      or trans_id in self._new_parent):
 
1837
                    try:
 
1838
                        mover.rename(full_path, self._limbo_name(trans_id))
 
1839
                    except errors.TransformRenameFailed, e:
 
1840
                        if e.errno != errno.ENOENT:
 
1841
                            raise
 
1842
                    else:
 
1843
                        self.rename_count += 1
 
1844
        finally:
 
1845
            child_pb.finished()
 
1846
 
 
1847
    def _apply_insertions(self, mover):
 
1848
        """Perform tree operations that insert directory/inventory names.
 
1849
 
 
1850
        That is, create any files that need to be created, and restore from
 
1851
        limbo any files that needed renaming.  This must be done in strict
 
1852
        parent-to-child order.
 
1853
 
 
1854
        If inventory_delta is None, no inventory delta is calculated, and
 
1855
        no list of modified paths is returned.
 
1856
        """
 
1857
        new_paths = self.new_paths(filesystem_only=True)
 
1858
        modified_paths = []
 
1859
        new_path_file_ids = dict((t, self.final_file_id(t)) for p, t in
 
1860
                                 new_paths)
 
1861
        child_pb = ui.ui_factory.nested_progress_bar()
 
1862
        try:
 
1863
            for num, (path, trans_id) in enumerate(new_paths):
 
1864
                if (num % 10) == 0:
 
1865
                    child_pb.update(gettext('adding file'), num, len(new_paths))
 
1866
                full_path = self._tree.abspath(path)
 
1867
                if trans_id in self._needs_rename:
 
1868
                    try:
 
1869
                        mover.rename(self._limbo_name(trans_id), full_path)
 
1870
                    except errors.TransformRenameFailed, e:
 
1871
                        # We may be renaming a dangling inventory id
 
1872
                        if e.errno != errno.ENOENT:
 
1873
                            raise
 
1874
                    else:
 
1875
                        self.rename_count += 1
 
1876
                    # TODO: if trans_id in self._observed_sha1s, we should
 
1877
                    #       re-stat the final target, since ctime will be
 
1878
                    #       updated by the change.
 
1879
                if (trans_id in self._new_contents or
 
1880
                    self.path_changed(trans_id)):
 
1881
                    if trans_id in self._new_contents:
 
1882
                        modified_paths.append(full_path)
 
1883
                if trans_id in self._new_executability:
 
1884
                    self._set_executability(path, trans_id)
 
1885
                if trans_id in self._observed_sha1s:
 
1886
                    o_sha1, o_st_val = self._observed_sha1s[trans_id]
 
1887
                    st = osutils.lstat(full_path)
 
1888
                    self._observed_sha1s[trans_id] = (o_sha1, st)
 
1889
        finally:
 
1890
            child_pb.finished()
 
1891
        for path, trans_id in new_paths:
 
1892
            # new_paths includes stuff like workingtree conflicts. Only the
 
1893
            # stuff in new_contents actually comes from limbo.
 
1894
            if trans_id in self._limbo_files:
 
1895
                del self._limbo_files[trans_id]
 
1896
        self._new_contents.clear()
 
1897
        return modified_paths
 
1898
 
 
1899
    def _apply_observed_sha1s(self):
 
1900
        """After we have finished renaming everything, update observed sha1s
 
1901
 
 
1902
        This has to be done after self._tree.apply_inventory_delta, otherwise
 
1903
        it doesn't know anything about the files we are updating. Also, we want
 
1904
        to do this as late as possible, so that most entries end up cached.
 
1905
        """
 
1906
        # TODO: this doesn't update the stat information for directories. So
 
1907
        #       the first 'bzr status' will still need to rewrite
 
1908
        #       .bzr/checkout/dirstate. However, we at least don't need to
 
1909
        #       re-read all of the files.
 
1910
        # TODO: If the operation took a while, we could do a time.sleep(3) here
 
1911
        #       to allow the clock to tick over and ensure we won't have any
 
1912
        #       problems. (we could observe start time, and finish time, and if
 
1913
        #       it is less than eg 10% overhead, add a sleep call.)
 
1914
        paths = FinalPaths(self)
 
1915
        for trans_id, observed in self._observed_sha1s.iteritems():
 
1916
            path = paths.get_path(trans_id)
 
1917
            # We could get the file_id, but dirstate prefers to use the path
 
1918
            # anyway, and it is 'cheaper' to determine.
 
1919
            # file_id = self._new_id[trans_id]
 
1920
            self._tree._observed_sha1(None, path, observed)
 
1921
 
 
1922
 
 
1923
class TransformPreview(DiskTreeTransform):
 
1924
    """A TreeTransform for generating preview trees.
 
1925
 
 
1926
    Unlike TreeTransform, this version works when the input tree is a
 
1927
    RevisionTree, rather than a WorkingTree.  As a result, it tends to ignore
 
1928
    unversioned files in the input tree.
 
1929
    """
 
1930
 
 
1931
    def __init__(self, tree, pb=None, case_sensitive=True):
 
1932
        tree.lock_read()
 
1933
        limbodir = osutils.mkdtemp(prefix='bzr-limbo-')
 
1934
        DiskTreeTransform.__init__(self, tree, limbodir, pb, case_sensitive)
 
1935
 
 
1936
    def canonical_path(self, path):
 
1937
        return path
 
1938
 
 
1939
    def tree_kind(self, trans_id):
 
1940
        path = self._tree_id_paths.get(trans_id)
 
1941
        if path is None:
 
1942
            return None
 
1943
        kind = self._tree.path_content_summary(path)[0]
 
1944
        if kind == 'missing':
 
1945
            kind = None
 
1946
        return kind
 
1947
 
 
1948
    def _set_mode(self, trans_id, mode_id, typefunc):
 
1949
        """Set the mode of new file contents.
 
1950
        The mode_id is the existing file to get the mode from (often the same
 
1951
        as trans_id).  The operation is only performed if there's a mode match
 
1952
        according to typefunc.
 
1953
        """
 
1954
        # is it ok to ignore this?  probably
 
1955
        pass
 
1956
 
 
1957
    def iter_tree_children(self, parent_id):
 
1958
        """Iterate through the entry's tree children, if any"""
 
1959
        try:
 
1960
            path = self._tree_id_paths[parent_id]
 
1961
        except KeyError:
 
1962
            return
 
1963
        file_id = self.tree_file_id(parent_id)
 
1964
        if file_id is None:
 
1965
            return
 
1966
        entry = self._tree.iter_entries_by_dir([file_id]).next()[1]
 
1967
        children = getattr(entry, 'children', {})
 
1968
        for child in children:
 
1969
            childpath = joinpath(path, child)
 
1970
            yield self.trans_id_tree_path(childpath)
 
1971
 
 
1972
    def new_orphan(self, trans_id, parent_id):
 
1973
        raise NotImplementedError(self.new_orphan)
 
1974
 
 
1975
 
 
1976
class _PreviewTree(tree.InventoryTree):
 
1977
    """Partial implementation of Tree to support show_diff_trees"""
 
1978
 
 
1979
    def __init__(self, transform):
 
1980
        self._transform = transform
 
1981
        self._final_paths = FinalPaths(transform)
 
1982
        self.__by_parent = None
 
1983
        self._parent_ids = []
 
1984
        self._all_children_cache = {}
 
1985
        self._path2trans_id_cache = {}
 
1986
        self._final_name_cache = {}
 
1987
        self._iter_changes_cache = dict((c[0], c) for c in
 
1988
                                        self._transform.iter_changes())
 
1989
 
 
1990
    def _content_change(self, file_id):
 
1991
        """Return True if the content of this file changed"""
 
1992
        changes = self._iter_changes_cache.get(file_id)
 
1993
        # changes[2] is true if the file content changed.  See
 
1994
        # InterTree.iter_changes.
 
1995
        return (changes is not None and changes[2])
 
1996
 
 
1997
    def _get_repository(self):
 
1998
        repo = getattr(self._transform._tree, '_repository', None)
 
1999
        if repo is None:
 
2000
            repo = self._transform._tree.branch.repository
 
2001
        return repo
 
2002
 
 
2003
    def _iter_parent_trees(self):
 
2004
        for revision_id in self.get_parent_ids():
 
2005
            try:
 
2006
                yield self.revision_tree(revision_id)
 
2007
            except errors.NoSuchRevisionInTree:
 
2008
                yield self._get_repository().revision_tree(revision_id)
 
2009
 
 
2010
    def _get_file_revision(self, file_id, vf, tree_revision):
 
2011
        parent_keys = [(file_id, t.get_file_revision(file_id)) for t in
 
2012
                       self._iter_parent_trees()]
 
2013
        vf.add_lines((file_id, tree_revision), parent_keys,
 
2014
                     self.get_file_lines(file_id))
 
2015
        repo = self._get_repository()
 
2016
        base_vf = repo.texts
 
2017
        if base_vf not in vf.fallback_versionedfiles:
 
2018
            vf.fallback_versionedfiles.append(base_vf)
 
2019
        return tree_revision
 
2020
 
 
2021
    def _stat_limbo_file(self, file_id=None, trans_id=None):
 
2022
        if trans_id is None:
 
2023
            trans_id = self._transform.trans_id_file_id(file_id)
 
2024
        name = self._transform._limbo_name(trans_id)
 
2025
        return os.lstat(name)
 
2026
 
 
2027
    @property
 
2028
    def _by_parent(self):
 
2029
        if self.__by_parent is None:
 
2030
            self.__by_parent = self._transform.by_parent()
 
2031
        return self.__by_parent
 
2032
 
 
2033
    def _comparison_data(self, entry, path):
 
2034
        kind, size, executable, link_or_sha1 = self.path_content_summary(path)
 
2035
        if kind == 'missing':
 
2036
            kind = None
 
2037
            executable = False
 
2038
        else:
 
2039
            file_id = self._transform.final_file_id(self._path2trans_id(path))
 
2040
            executable = self.is_executable(file_id, path)
 
2041
        return kind, executable, None
 
2042
 
 
2043
    def is_locked(self):
 
2044
        return False
 
2045
 
 
2046
    def lock_read(self):
 
2047
        # Perhaps in theory, this should lock the TreeTransform?
 
2048
        return self
 
2049
 
 
2050
    def unlock(self):
 
2051
        pass
 
2052
 
 
2053
    @property
 
2054
    @deprecated_method(deprecated_in((2, 5, 0)))
 
2055
    def inventory(self):
 
2056
        """This Tree does not use inventory as its backing data."""
 
2057
        raise NotImplementedError(_PreviewTree.inventory)
 
2058
 
 
2059
    @property
 
2060
    def root_inventory(self):
 
2061
        """This Tree does not use inventory as its backing data."""
 
2062
        raise NotImplementedError(_PreviewTree.root_inventory)
 
2063
 
 
2064
    def get_root_id(self):
 
2065
        return self._transform.final_file_id(self._transform.root)
 
2066
 
 
2067
    def all_file_ids(self):
 
2068
        tree_ids = set(self._transform._tree.all_file_ids())
 
2069
        tree_ids.difference_update(self._transform.tree_file_id(t)
 
2070
                                   for t in self._transform._removed_id)
 
2071
        tree_ids.update(self._transform._new_id.values())
 
2072
        return tree_ids
 
2073
 
 
2074
    def __iter__(self):
 
2075
        return iter(self.all_file_ids())
 
2076
 
 
2077
    def _has_id(self, file_id, fallback_check):
 
2078
        if file_id in self._transform._r_new_id:
 
2079
            return True
 
2080
        elif file_id in set([self._transform.tree_file_id(trans_id) for
 
2081
            trans_id in self._transform._removed_id]):
 
2082
            return False
 
2083
        else:
 
2084
            return fallback_check(file_id)
 
2085
 
 
2086
    def has_id(self, file_id):
 
2087
        return self._has_id(file_id, self._transform._tree.has_id)
 
2088
 
 
2089
    def has_or_had_id(self, file_id):
 
2090
        return self._has_id(file_id, self._transform._tree.has_or_had_id)
 
2091
 
 
2092
    def _path2trans_id(self, path):
 
2093
        # We must not use None here, because that is a valid value to store.
 
2094
        trans_id = self._path2trans_id_cache.get(path, object)
 
2095
        if trans_id is not object:
 
2096
            return trans_id
 
2097
        segments = splitpath(path)
 
2098
        cur_parent = self._transform.root
 
2099
        for cur_segment in segments:
 
2100
            for child in self._all_children(cur_parent):
 
2101
                final_name = self._final_name_cache.get(child)
 
2102
                if final_name is None:
 
2103
                    final_name = self._transform.final_name(child)
 
2104
                    self._final_name_cache[child] = final_name
 
2105
                if final_name == cur_segment:
 
2106
                    cur_parent = child
 
2107
                    break
 
2108
            else:
 
2109
                self._path2trans_id_cache[path] = None
 
2110
                return None
 
2111
        self._path2trans_id_cache[path] = cur_parent
 
2112
        return cur_parent
 
2113
 
 
2114
    def path2id(self, path):
 
2115
        if isinstance(path, list):
 
2116
            if path == []:
 
2117
                path = [""]
 
2118
            path = osutils.pathjoin(*path)
 
2119
        return self._transform.final_file_id(self._path2trans_id(path))
 
2120
 
 
2121
    def id2path(self, file_id):
 
2122
        trans_id = self._transform.trans_id_file_id(file_id)
 
2123
        try:
 
2124
            return self._final_paths._determine_path(trans_id)
 
2125
        except NoFinalPath:
 
2126
            raise errors.NoSuchId(self, file_id)
 
2127
 
 
2128
    def _all_children(self, trans_id):
 
2129
        children = self._all_children_cache.get(trans_id)
 
2130
        if children is not None:
 
2131
            return children
 
2132
        children = set(self._transform.iter_tree_children(trans_id))
 
2133
        # children in the _new_parent set are provided by _by_parent.
 
2134
        children.difference_update(self._transform._new_parent.keys())
 
2135
        children.update(self._by_parent.get(trans_id, []))
 
2136
        self._all_children_cache[trans_id] = children
 
2137
        return children
 
2138
 
 
2139
    def iter_children(self, file_id):
 
2140
        trans_id = self._transform.trans_id_file_id(file_id)
 
2141
        for child_trans_id in self._all_children(trans_id):
 
2142
            yield self._transform.final_file_id(child_trans_id)
 
2143
 
 
2144
    def extras(self):
 
2145
        possible_extras = set(self._transform.trans_id_tree_path(p) for p
 
2146
                              in self._transform._tree.extras())
 
2147
        possible_extras.update(self._transform._new_contents)
 
2148
        possible_extras.update(self._transform._removed_id)
 
2149
        for trans_id in possible_extras:
 
2150
            if self._transform.final_file_id(trans_id) is None:
 
2151
                yield self._final_paths._determine_path(trans_id)
 
2152
 
 
2153
    def _make_inv_entries(self, ordered_entries, specific_file_ids=None,
 
2154
        yield_parents=False):
 
2155
        for trans_id, parent_file_id in ordered_entries:
 
2156
            file_id = self._transform.final_file_id(trans_id)
 
2157
            if file_id is None:
 
2158
                continue
 
2159
            if (specific_file_ids is not None
 
2160
                and file_id not in specific_file_ids):
 
2161
                continue
 
2162
            kind = self._transform.final_kind(trans_id)
 
2163
            if kind is None:
 
2164
                kind = self._transform._tree.stored_kind(file_id)
 
2165
            new_entry = inventory.make_entry(
 
2166
                kind,
 
2167
                self._transform.final_name(trans_id),
 
2168
                parent_file_id, file_id)
 
2169
            yield new_entry, trans_id
 
2170
 
 
2171
    def _list_files_by_dir(self):
 
2172
        todo = [ROOT_PARENT]
 
2173
        ordered_ids = []
 
2174
        while len(todo) > 0:
 
2175
            parent = todo.pop()
 
2176
            parent_file_id = self._transform.final_file_id(parent)
 
2177
            children = list(self._all_children(parent))
 
2178
            paths = dict(zip(children, self._final_paths.get_paths(children)))
 
2179
            children.sort(key=paths.get)
 
2180
            todo.extend(reversed(children))
 
2181
            for trans_id in children:
 
2182
                ordered_ids.append((trans_id, parent_file_id))
 
2183
        return ordered_ids
 
2184
 
 
2185
    def iter_child_entries(self, file_id, path=None):
 
2186
        self.id2path(file_id)
 
2187
        trans_id = self._transform.trans_id_file_id(file_id)
 
2188
        todo = [(child_trans_id, trans_id) for child_trans_id in
 
2189
                self._all_children(trans_id)]
 
2190
        for entry, trans_id in self._make_inv_entries(todo):
 
2191
            yield entry
 
2192
 
 
2193
    def iter_entries_by_dir(self, specific_file_ids=None, yield_parents=False):
 
2194
        # This may not be a maximally efficient implementation, but it is
 
2195
        # reasonably straightforward.  An implementation that grafts the
 
2196
        # TreeTransform changes onto the tree's iter_entries_by_dir results
 
2197
        # might be more efficient, but requires tricky inferences about stack
 
2198
        # position.
 
2199
        ordered_ids = self._list_files_by_dir()
 
2200
        for entry, trans_id in self._make_inv_entries(ordered_ids,
 
2201
            specific_file_ids, yield_parents=yield_parents):
 
2202
            yield unicode(self._final_paths.get_path(trans_id)), entry
 
2203
 
 
2204
    def _iter_entries_for_dir(self, dir_path):
 
2205
        """Return path, entry for items in a directory without recursing down."""
 
2206
        dir_file_id = self.path2id(dir_path)
 
2207
        ordered_ids = []
 
2208
        for file_id in self.iter_children(dir_file_id):
 
2209
            trans_id = self._transform.trans_id_file_id(file_id)
 
2210
            ordered_ids.append((trans_id, file_id))
 
2211
        for entry, trans_id in self._make_inv_entries(ordered_ids):
 
2212
            yield unicode(self._final_paths.get_path(trans_id)), entry
 
2213
 
 
2214
    def list_files(self, include_root=False, from_dir=None, recursive=True):
 
2215
        """See WorkingTree.list_files."""
 
2216
        # XXX This should behave like WorkingTree.list_files, but is really
 
2217
        # more like RevisionTree.list_files.
 
2218
        if recursive:
 
2219
            prefix = None
 
2220
            if from_dir:
 
2221
                prefix = from_dir + '/'
 
2222
            entries = self.iter_entries_by_dir()
 
2223
            for path, entry in entries:
 
2224
                if entry.name == '' and not include_root:
 
2225
                    continue
 
2226
                if prefix:
 
2227
                    if not path.startswith(prefix):
 
2228
                        continue
 
2229
                    path = path[len(prefix):]
 
2230
                yield path, 'V', entry.kind, entry.file_id, entry
 
2231
        else:
 
2232
            if from_dir is None and include_root is True:
 
2233
                root_entry = inventory.make_entry('directory', '',
 
2234
                    ROOT_PARENT, self.get_root_id())
 
2235
                yield '', 'V', 'directory', root_entry.file_id, root_entry
 
2236
            entries = self._iter_entries_for_dir(from_dir or '')
 
2237
            for path, entry in entries:
 
2238
                yield path, 'V', entry.kind, entry.file_id, entry
 
2239
 
 
2240
    def kind(self, file_id):
 
2241
        trans_id = self._transform.trans_id_file_id(file_id)
 
2242
        return self._transform.final_kind(trans_id)
 
2243
 
 
2244
    def stored_kind(self, file_id):
 
2245
        trans_id = self._transform.trans_id_file_id(file_id)
 
2246
        try:
 
2247
            return self._transform._new_contents[trans_id]
 
2248
        except KeyError:
 
2249
            return self._transform._tree.stored_kind(file_id)
 
2250
 
 
2251
    def get_file_mtime(self, file_id, path=None):
 
2252
        """See Tree.get_file_mtime"""
 
2253
        if not self._content_change(file_id):
 
2254
            return self._transform._tree.get_file_mtime(file_id)
 
2255
        return self._stat_limbo_file(file_id).st_mtime
 
2256
 
 
2257
    def _file_size(self, entry, stat_value):
 
2258
        return self.get_file_size(entry.file_id)
 
2259
 
 
2260
    def get_file_size(self, file_id):
 
2261
        """See Tree.get_file_size"""
 
2262
        trans_id = self._transform.trans_id_file_id(file_id)
 
2263
        kind = self._transform.final_kind(trans_id)
 
2264
        if kind != 'file':
 
2265
            return None
 
2266
        if trans_id in self._transform._new_contents:
 
2267
            return self._stat_limbo_file(trans_id=trans_id).st_size
 
2268
        if self.kind(file_id) == 'file':
 
2269
            return self._transform._tree.get_file_size(file_id)
 
2270
        else:
 
2271
            return None
 
2272
 
 
2273
    def get_file_verifier(self, file_id, path=None, stat_value=None):
 
2274
        trans_id = self._transform.trans_id_file_id(file_id)
 
2275
        kind = self._transform._new_contents.get(trans_id)
 
2276
        if kind is None:
 
2277
            return self._transform._tree.get_file_verifier(file_id)
 
2278
        if kind == 'file':
 
2279
            fileobj = self.get_file(file_id)
 
2280
            try:
 
2281
                return ("SHA1", sha_file(fileobj))
 
2282
            finally:
 
2283
                fileobj.close()
 
2284
 
 
2285
    def get_file_sha1(self, file_id, path=None, stat_value=None):
 
2286
        trans_id = self._transform.trans_id_file_id(file_id)
 
2287
        kind = self._transform._new_contents.get(trans_id)
 
2288
        if kind is None:
 
2289
            return self._transform._tree.get_file_sha1(file_id)
 
2290
        if kind == 'file':
 
2291
            fileobj = self.get_file(file_id)
 
2292
            try:
 
2293
                return sha_file(fileobj)
 
2294
            finally:
 
2295
                fileobj.close()
 
2296
 
 
2297
    def is_executable(self, file_id, path=None):
 
2298
        if file_id is None:
 
2299
            return False
 
2300
        trans_id = self._transform.trans_id_file_id(file_id)
 
2301
        try:
 
2302
            return self._transform._new_executability[trans_id]
 
2303
        except KeyError:
 
2304
            try:
 
2305
                return self._transform._tree.is_executable(file_id, path)
 
2306
            except OSError, e:
 
2307
                if e.errno == errno.ENOENT:
 
2308
                    return False
 
2309
                raise
 
2310
            except errors.NoSuchId:
 
2311
                return False
 
2312
 
 
2313
    def has_filename(self, path):
 
2314
        trans_id = self._path2trans_id(path)
 
2315
        if trans_id in self._transform._new_contents:
 
2316
            return True
 
2317
        elif trans_id in self._transform._removed_contents:
 
2318
            return False
 
2319
        else:
 
2320
            return self._transform._tree.has_filename(path)
 
2321
 
 
2322
    def path_content_summary(self, path):
 
2323
        trans_id = self._path2trans_id(path)
 
2324
        tt = self._transform
 
2325
        tree_path = tt._tree_id_paths.get(trans_id)
 
2326
        kind = tt._new_contents.get(trans_id)
 
2327
        if kind is None:
 
2328
            if tree_path is None or trans_id in tt._removed_contents:
 
2329
                return 'missing', None, None, None
 
2330
            summary = tt._tree.path_content_summary(tree_path)
 
2331
            kind, size, executable, link_or_sha1 = summary
 
2332
        else:
 
2333
            link_or_sha1 = None
 
2334
            limbo_name = tt._limbo_name(trans_id)
 
2335
            if trans_id in tt._new_reference_revision:
 
2336
                kind = 'tree-reference'
 
2337
            if kind == 'file':
 
2338
                statval = os.lstat(limbo_name)
 
2339
                size = statval.st_size
 
2340
                if not tt._limbo_supports_executable():
 
2341
                    executable = False
 
2342
                else:
 
2343
                    executable = statval.st_mode & S_IEXEC
 
2344
            else:
 
2345
                size = None
 
2346
                executable = None
 
2347
            if kind == 'symlink':
 
2348
                link_or_sha1 = os.readlink(limbo_name).decode(osutils._fs_enc)
 
2349
        executable = tt._new_executability.get(trans_id, executable)
 
2350
        return kind, size, executable, link_or_sha1
 
2351
 
 
2352
    def iter_changes(self, from_tree, include_unchanged=False,
 
2353
                      specific_files=None, pb=None, extra_trees=None,
 
2354
                      require_versioned=True, want_unversioned=False):
 
2355
        """See InterTree.iter_changes.
 
2356
 
 
2357
        This has a fast path that is only used when the from_tree matches
 
2358
        the transform tree, and no fancy options are supplied.
 
2359
        """
 
2360
        if (from_tree is not self._transform._tree or include_unchanged or
 
2361
            specific_files or want_unversioned):
 
2362
            return tree.InterTree(from_tree, self).iter_changes(
 
2363
                include_unchanged=include_unchanged,
 
2364
                specific_files=specific_files,
 
2365
                pb=pb,
 
2366
                extra_trees=extra_trees,
 
2367
                require_versioned=require_versioned,
 
2368
                want_unversioned=want_unversioned)
 
2369
        if want_unversioned:
 
2370
            raise ValueError('want_unversioned is not supported')
 
2371
        return self._transform.iter_changes()
 
2372
 
 
2373
    def get_file(self, file_id, path=None):
 
2374
        """See Tree.get_file"""
 
2375
        if not self._content_change(file_id):
 
2376
            return self._transform._tree.get_file(file_id, path)
 
2377
        trans_id = self._transform.trans_id_file_id(file_id)
 
2378
        name = self._transform._limbo_name(trans_id)
 
2379
        return open(name, 'rb')
 
2380
 
 
2381
    def get_file_with_stat(self, file_id, path=None):
 
2382
        return self.get_file(file_id, path), None
 
2383
 
 
2384
    def annotate_iter(self, file_id,
 
2385
                      default_revision=_mod_revision.CURRENT_REVISION):
 
2386
        changes = self._iter_changes_cache.get(file_id)
 
2387
        if changes is None:
 
2388
            get_old = True
 
2389
        else:
 
2390
            changed_content, versioned, kind = (changes[2], changes[3],
 
2391
                                                changes[6])
 
2392
            if kind[1] is None:
 
2393
                return None
 
2394
            get_old = (kind[0] == 'file' and versioned[0])
 
2395
        if get_old:
 
2396
            old_annotation = self._transform._tree.annotate_iter(file_id,
 
2397
                default_revision=default_revision)
 
2398
        else:
 
2399
            old_annotation = []
 
2400
        if changes is None:
 
2401
            return old_annotation
 
2402
        if not changed_content:
 
2403
            return old_annotation
 
2404
        # TODO: This is doing something similar to what WT.annotate_iter is
 
2405
        #       doing, however it fails slightly because it doesn't know what
 
2406
        #       the *other* revision_id is, so it doesn't know how to give the
 
2407
        #       other as the origin for some lines, they all get
 
2408
        #       'default_revision'
 
2409
        #       It would be nice to be able to use the new Annotator based
 
2410
        #       approach, as well.
 
2411
        return annotate.reannotate([old_annotation],
 
2412
                                   self.get_file(file_id).readlines(),
 
2413
                                   default_revision)
 
2414
 
 
2415
    def get_symlink_target(self, file_id, path=None):
 
2416
        """See Tree.get_symlink_target"""
 
2417
        if not self._content_change(file_id):
 
2418
            return self._transform._tree.get_symlink_target(file_id)
 
2419
        trans_id = self._transform.trans_id_file_id(file_id)
 
2420
        name = self._transform._limbo_name(trans_id)
 
2421
        return osutils.readlink(name)
 
2422
 
 
2423
    def walkdirs(self, prefix=''):
 
2424
        pending = [self._transform.root]
 
2425
        while len(pending) > 0:
 
2426
            parent_id = pending.pop()
 
2427
            children = []
 
2428
            subdirs = []
 
2429
            prefix = prefix.rstrip('/')
 
2430
            parent_path = self._final_paths.get_path(parent_id)
 
2431
            parent_file_id = self._transform.final_file_id(parent_id)
 
2432
            for child_id in self._all_children(parent_id):
 
2433
                path_from_root = self._final_paths.get_path(child_id)
 
2434
                basename = self._transform.final_name(child_id)
 
2435
                file_id = self._transform.final_file_id(child_id)
 
2436
                kind  = self._transform.final_kind(child_id)
 
2437
                if kind is not None:
 
2438
                    versioned_kind = kind
 
2439
                else:
 
2440
                    kind = 'unknown'
 
2441
                    versioned_kind = self._transform._tree.stored_kind(file_id)
 
2442
                if versioned_kind == 'directory':
 
2443
                    subdirs.append(child_id)
 
2444
                children.append((path_from_root, basename, kind, None,
 
2445
                                 file_id, versioned_kind))
 
2446
            children.sort()
 
2447
            if parent_path.startswith(prefix):
 
2448
                yield (parent_path, parent_file_id), children
 
2449
            pending.extend(sorted(subdirs, key=self._final_paths.get_path,
 
2450
                                  reverse=True))
 
2451
 
 
2452
    def get_parent_ids(self):
 
2453
        return self._parent_ids
 
2454
 
 
2455
    def set_parent_ids(self, parent_ids):
 
2456
        self._parent_ids = parent_ids
 
2457
 
 
2458
    def get_revision_tree(self, revision_id):
 
2459
        return self._transform._tree.get_revision_tree(revision_id)
 
2460
 
1204
2461
 
1205
2462
def joinpath(parent, child):
1206
2463
    """Join tree-relative paths, handling the tree root specially"""
1222
2479
        self.transform = transform
1223
2480
 
1224
2481
    def _determine_path(self, trans_id):
1225
 
        if trans_id == self.transform.root:
 
2482
        if (trans_id == self.transform.root or trans_id == ROOT_PARENT):
1226
2483
            return ""
1227
2484
        name = self.transform.final_name(trans_id)
1228
2485
        parent_id = self.transform.final_parent(trans_id)
1237
2494
            self._known_paths[trans_id] = self._determine_path(trans_id)
1238
2495
        return self._known_paths[trans_id]
1239
2496
 
 
2497
    def get_paths(self, trans_ids):
 
2498
        return [(self.get_path(t), t) for t in trans_ids]
 
2499
 
 
2500
 
 
2501
 
1240
2502
def topology_sorted_ids(tree):
1241
2503
    """Determine the topological order of the ids in a tree"""
1242
2504
    file_ids = list(tree)
1244
2506
    return file_ids
1245
2507
 
1246
2508
 
1247
 
def build_tree(tree, wt):
 
2509
def build_tree(tree, wt, accelerator_tree=None, hardlink=False,
 
2510
               delta_from_tree=False):
1248
2511
    """Create working tree for a branch, using a TreeTransform.
1249
 
    
 
2512
 
1250
2513
    This function should be used on empty trees, having a tree root at most.
1251
2514
    (see merge and revert functionality for working with existing trees)
1252
2515
 
1253
2516
    Existing files are handled like so:
1254
 
    
 
2517
 
1255
2518
    - Existing bzrdirs take precedence over creating new items.  They are
1256
2519
      created as '%s.diverted' % name.
1257
2520
    - Otherwise, if the content on disk matches the content we are building,
1258
2521
      it is silently replaced.
1259
2522
    - Otherwise, conflict resolution will move the old file to 'oldname.moved'.
 
2523
 
 
2524
    :param tree: The tree to convert wt into a copy of
 
2525
    :param wt: The working tree that files will be placed into
 
2526
    :param accelerator_tree: A tree which can be used for retrieving file
 
2527
        contents more quickly than tree itself, i.e. a workingtree.  tree
 
2528
        will be used for cases where accelerator_tree's content is different.
 
2529
    :param hardlink: If true, hard-link files to accelerator_tree, where
 
2530
        possible.  accelerator_tree must implement abspath, i.e. be a
 
2531
        working tree.
 
2532
    :param delta_from_tree: If true, build_tree may use the input Tree to
 
2533
        generate the inventory delta.
1260
2534
    """
1261
2535
    wt.lock_tree_write()
1262
2536
    try:
1263
2537
        tree.lock_read()
1264
2538
        try:
1265
 
            return _build_tree(tree, wt)
 
2539
            if accelerator_tree is not None:
 
2540
                accelerator_tree.lock_read()
 
2541
            try:
 
2542
                return _build_tree(tree, wt, accelerator_tree, hardlink,
 
2543
                                   delta_from_tree)
 
2544
            finally:
 
2545
                if accelerator_tree is not None:
 
2546
                    accelerator_tree.unlock()
1266
2547
        finally:
1267
2548
            tree.unlock()
1268
2549
    finally:
1269
2550
        wt.unlock()
1270
2551
 
1271
 
def _build_tree(tree, wt):
 
2552
 
 
2553
def _build_tree(tree, wt, accelerator_tree, hardlink, delta_from_tree):
1272
2554
    """See build_tree."""
1273
 
    if len(wt.inventory) > 1:  # more than just a root
1274
 
        raise errors.WorkingTreeAlreadyPopulated(base=wt.basedir)
 
2555
    for num, _unused in enumerate(wt.all_file_ids()):
 
2556
        if num > 0:  # more than just a root
 
2557
            raise errors.WorkingTreeAlreadyPopulated(base=wt.basedir)
1275
2558
    file_trans_id = {}
1276
 
    top_pb = bzrlib.ui.ui_factory.nested_progress_bar()
 
2559
    top_pb = ui.ui_factory.nested_progress_bar()
1277
2560
    pp = ProgressPhase("Build phase", 2, top_pb)
1278
 
    if tree.inventory.root is not None:
 
2561
    if tree.get_root_id() is not None:
1279
2562
        # This is kind of a hack: we should be altering the root
1280
2563
        # as part of the regular tree shape diff logic.
1281
2564
        # The conditional test here is to avoid doing an
1292
2575
        pp.next_phase()
1293
2576
        file_trans_id[wt.get_root_id()] = \
1294
2577
            tt.trans_id_tree_file_id(wt.get_root_id())
1295
 
        pb = bzrlib.ui.ui_factory.nested_progress_bar()
 
2578
        pb = ui.ui_factory.nested_progress_bar()
1296
2579
        try:
1297
2580
            deferred_contents = []
 
2581
            num = 0
 
2582
            total = len(tree.all_file_ids())
 
2583
            if delta_from_tree:
 
2584
                precomputed_delta = []
 
2585
            else:
 
2586
                precomputed_delta = None
 
2587
            # Check if tree inventory has content. If so, we populate
 
2588
            # existing_files with the directory content. If there are no
 
2589
            # entries we skip populating existing_files as its not used.
 
2590
            # This improves performance and unncessary work on large
 
2591
            # directory trees. (#501307)
 
2592
            if total > 0:
 
2593
                existing_files = set()
 
2594
                for dir, files in wt.walkdirs():
 
2595
                    existing_files.update(f[0] for f in files)
1298
2596
            for num, (tree_path, entry) in \
1299
 
                enumerate(tree.inventory.iter_entries_by_dir()):
1300
 
                pb.update("Building tree", num - len(deferred_contents),
1301
 
                          len(tree.inventory))
 
2597
                enumerate(tree.iter_entries_by_dir()):
 
2598
                pb.update(gettext("Building tree"), num - len(deferred_contents), total)
1302
2599
                if entry.parent_id is None:
1303
2600
                    continue
1304
2601
                reparent = False
1305
2602
                file_id = entry.file_id
1306
 
                target_path = wt.abspath(tree_path)
1307
 
                try:
 
2603
                if delta_from_tree:
 
2604
                    precomputed_delta.append((None, tree_path, file_id, entry))
 
2605
                if tree_path in existing_files:
 
2606
                    target_path = wt.abspath(tree_path)
1308
2607
                    kind = file_kind(target_path)
1309
 
                except NoSuchFile:
1310
 
                    pass
1311
 
                else:
1312
2608
                    if kind == "directory":
1313
2609
                        try:
1314
 
                            bzrdir.BzrDir.open(target_path)
 
2610
                            controldir.ControlDir.open(target_path)
1315
2611
                        except errors.NotBranchError:
1316
2612
                            pass
1317
2613
                        else:
1322
2618
                        tt.delete_contents(tt.trans_id_tree_path(tree_path))
1323
2619
                        if kind == 'directory':
1324
2620
                            reparent = True
1325
 
                if entry.parent_id not in file_trans_id:
1326
 
                    raise AssertionError(
1327
 
                        'entry %s parent id %r is not in file_trans_id %r'
1328
 
                        % (entry, entry.parent_id, file_trans_id))
1329
2621
                parent_id = file_trans_id[entry.parent_id]
1330
2622
                if entry.kind == 'file':
1331
2623
                    # We *almost* replicate new_by_entry, so that we can defer
1332
2624
                    # getting the file text, and get them all at once.
1333
2625
                    trans_id = tt.create_path(entry.name, parent_id)
1334
2626
                    file_trans_id[file_id] = trans_id
1335
 
                    tt.version_file(entry.file_id, trans_id)
1336
 
                    executable = tree.is_executable(entry.file_id, tree_path)
1337
 
                    if executable is not None:
 
2627
                    tt.version_file(file_id, trans_id)
 
2628
                    executable = tree.is_executable(file_id, tree_path)
 
2629
                    if executable:
1338
2630
                        tt.set_executability(executable, trans_id)
1339
 
                    deferred_contents.append((entry.file_id, trans_id))
 
2631
                    trans_data = (trans_id, tree_path, entry.text_sha1)
 
2632
                    deferred_contents.append((file_id, trans_data))
1340
2633
                else:
1341
2634
                    file_trans_id[file_id] = new_by_entry(tt, entry, parent_id,
1342
2635
                                                          tree)
1344
2637
                    new_trans_id = file_trans_id[file_id]
1345
2638
                    old_parent = tt.trans_id_tree_path(tree_path)
1346
2639
                    _reparent_children(tt, old_parent, new_trans_id)
1347
 
            for num, (trans_id, bytes) in enumerate(
1348
 
                tree.iter_files_bytes(deferred_contents)):
1349
 
                tt.create_file(bytes, trans_id)
1350
 
                pb.update('Adding file contents',
1351
 
                          (num + len(tree.inventory) - len(deferred_contents)),
1352
 
                          len(tree.inventory))
 
2640
            offset = num + 1 - len(deferred_contents)
 
2641
            _create_files(tt, tree, deferred_contents, pb, offset,
 
2642
                          accelerator_tree, hardlink)
1353
2643
        finally:
1354
2644
            pb.finished()
1355
2645
        pp.next_phase()
1356
2646
        divert_trans = set(file_trans_id[f] for f in divert)
1357
2647
        resolver = lambda t, c: resolve_checkout(t, c, divert_trans)
1358
2648
        raw_conflicts = resolve_conflicts(tt, pass_func=resolver)
 
2649
        if len(raw_conflicts) > 0:
 
2650
            precomputed_delta = None
1359
2651
        conflicts = cook_conflicts(raw_conflicts, tt)
1360
2652
        for conflict in conflicts:
1361
 
            warning(conflict)
 
2653
            trace.warning(unicode(conflict))
1362
2654
        try:
1363
2655
            wt.add_conflicts(conflicts)
1364
2656
        except errors.UnsupportedOperation:
1365
2657
            pass
1366
 
        result = tt.apply()
 
2658
        result = tt.apply(no_conflicts=True,
 
2659
                          precomputed_delta=precomputed_delta)
1367
2660
    finally:
1368
2661
        tt.finalize()
1369
2662
        top_pb.finished()
1370
2663
    return result
1371
2664
 
1372
2665
 
 
2666
def _create_files(tt, tree, desired_files, pb, offset, accelerator_tree,
 
2667
                  hardlink):
 
2668
    total = len(desired_files) + offset
 
2669
    wt = tt._tree
 
2670
    if accelerator_tree is None:
 
2671
        new_desired_files = desired_files
 
2672
    else:
 
2673
        iter = accelerator_tree.iter_changes(tree, include_unchanged=True)
 
2674
        unchanged = [(f, p[1]) for (f, p, c, v, d, n, k, e)
 
2675
                     in iter if not (c or e[0] != e[1])]
 
2676
        if accelerator_tree.supports_content_filtering():
 
2677
            unchanged = [(f, p) for (f, p) in unchanged
 
2678
                         if not accelerator_tree.iter_search_rules([p]).next()]
 
2679
        unchanged = dict(unchanged)
 
2680
        new_desired_files = []
 
2681
        count = 0
 
2682
        for file_id, (trans_id, tree_path, text_sha1) in desired_files:
 
2683
            accelerator_path = unchanged.get(file_id)
 
2684
            if accelerator_path is None:
 
2685
                new_desired_files.append((file_id,
 
2686
                    (trans_id, tree_path, text_sha1)))
 
2687
                continue
 
2688
            pb.update(gettext('Adding file contents'), count + offset, total)
 
2689
            if hardlink:
 
2690
                tt.create_hardlink(accelerator_tree.abspath(accelerator_path),
 
2691
                                   trans_id)
 
2692
            else:
 
2693
                contents = accelerator_tree.get_file(file_id, accelerator_path)
 
2694
                if wt.supports_content_filtering():
 
2695
                    filters = wt._content_filter_stack(tree_path)
 
2696
                    contents = filtered_output_bytes(contents, filters,
 
2697
                        ContentFilterContext(tree_path, tree))
 
2698
                try:
 
2699
                    tt.create_file(contents, trans_id, sha1=text_sha1)
 
2700
                finally:
 
2701
                    try:
 
2702
                        contents.close()
 
2703
                    except AttributeError:
 
2704
                        # after filtering, contents may no longer be file-like
 
2705
                        pass
 
2706
            count += 1
 
2707
        offset += count
 
2708
    for count, ((trans_id, tree_path, text_sha1), contents) in enumerate(
 
2709
            tree.iter_files_bytes(new_desired_files)):
 
2710
        if wt.supports_content_filtering():
 
2711
            filters = wt._content_filter_stack(tree_path)
 
2712
            contents = filtered_output_bytes(contents, filters,
 
2713
                ContentFilterContext(tree_path, tree))
 
2714
        tt.create_file(contents, trans_id, sha1=text_sha1)
 
2715
        pb.update(gettext('Adding file contents'), count + offset, total)
 
2716
 
 
2717
 
1373
2718
def _reparent_children(tt, old_parent, new_parent):
1374
2719
    for child in tt.iter_tree_children(old_parent):
1375
2720
        tt.adjust_path(tt.final_name(child), new_parent, child)
1376
2721
 
1377
2722
 
 
2723
def _reparent_transform_children(tt, old_parent, new_parent):
 
2724
    by_parent = tt.by_parent()
 
2725
    for child in by_parent[old_parent]:
 
2726
        tt.adjust_path(tt.final_name(child), new_parent, child)
 
2727
    return by_parent[old_parent]
 
2728
 
 
2729
 
1378
2730
def _content_match(tree, entry, file_id, kind, target_path):
1379
2731
    if entry.kind != kind:
1380
2732
        return False
1381
2733
    if entry.kind == "directory":
1382
2734
        return True
1383
2735
    if entry.kind == "file":
1384
 
        if tree.get_file(file_id).read() == file(target_path, 'rb').read():
1385
 
            return True
 
2736
        f = file(target_path, 'rb')
 
2737
        try:
 
2738
            if tree.get_file_text(file_id) == f.read():
 
2739
                return True
 
2740
        finally:
 
2741
            f.close()
1386
2742
    elif entry.kind == "symlink":
1387
2743
        if tree.get_symlink_target(file_id) == os.readlink(target_path):
1388
2744
            return True
1393
2749
    new_conflicts = set()
1394
2750
    for c_type, conflict in ((c[0], c) for c in conflicts):
1395
2751
        # Anything but a 'duplicate' would indicate programmer error
1396
 
        assert c_type == 'duplicate', c_type
 
2752
        if c_type != 'duplicate':
 
2753
            raise AssertionError(c_type)
1397
2754
        # Now figure out which is new and which is old
1398
2755
        if tt.new_contents(conflict[1]):
1399
2756
            new_file = conflict[1]
1425
2782
    if kind == 'file':
1426
2783
        contents = tree.get_file(entry.file_id).readlines()
1427
2784
        executable = tree.is_executable(entry.file_id)
1428
 
        return tt.new_file(name, parent_id, contents, entry.file_id, 
 
2785
        return tt.new_file(name, parent_id, contents, entry.file_id,
1429
2786
                           executable)
1430
2787
    elif kind in ('directory', 'tree-reference'):
1431
2788
        trans_id = tt.new_directory(name, parent_id, entry.file_id)
1432
2789
        if kind == 'tree-reference':
1433
2790
            tt.set_tree_reference(entry.reference_revision, trans_id)
1434
 
        return trans_id 
 
2791
        return trans_id
1435
2792
    elif kind == 'symlink':
1436
2793
        target = tree.get_symlink_target(entry.file_id)
1437
2794
        return tt.new_symlink(name, parent_id, target, entry.file_id)
1438
2795
    else:
1439
2796
        raise errors.BadFileKindError(name, kind)
1440
2797
 
1441
 
def create_by_entry(tt, entry, tree, trans_id, lines=None, mode_id=None):
1442
 
    """Create new file contents according to an inventory entry."""
1443
 
    if entry.kind == "file":
1444
 
        if lines is None:
1445
 
            lines = tree.get_file(entry.file_id).readlines()
1446
 
        tt.create_file(lines, trans_id, mode_id=mode_id)
1447
 
    elif entry.kind == "symlink":
1448
 
        tt.create_symlink(tree.get_symlink_target(entry.file_id), trans_id)
1449
 
    elif entry.kind == "directory":
 
2798
 
 
2799
def create_from_tree(tt, trans_id, tree, file_id, bytes=None,
 
2800
    filter_tree_path=None):
 
2801
    """Create new file contents according to tree contents.
 
2802
    
 
2803
    :param filter_tree_path: the tree path to use to lookup
 
2804
      content filters to apply to the bytes output in the working tree.
 
2805
      This only applies if the working tree supports content filtering.
 
2806
    """
 
2807
    kind = tree.kind(file_id)
 
2808
    if kind == 'directory':
1450
2809
        tt.create_directory(trans_id)
 
2810
    elif kind == "file":
 
2811
        if bytes is None:
 
2812
            tree_file = tree.get_file(file_id)
 
2813
            try:
 
2814
                bytes = tree_file.readlines()
 
2815
            finally:
 
2816
                tree_file.close()
 
2817
        wt = tt._tree
 
2818
        if wt.supports_content_filtering() and filter_tree_path is not None:
 
2819
            filters = wt._content_filter_stack(filter_tree_path)
 
2820
            bytes = filtered_output_bytes(bytes, filters,
 
2821
                ContentFilterContext(filter_tree_path, tree))
 
2822
        tt.create_file(bytes, trans_id)
 
2823
    elif kind == "symlink":
 
2824
        tt.create_symlink(tree.get_symlink_target(file_id), trans_id)
 
2825
    else:
 
2826
        raise AssertionError('Unknown kind %r' % kind)
 
2827
 
1451
2828
 
1452
2829
def create_entry_executability(tt, entry, trans_id):
1453
2830
    """Set the executability of a trans_id according to an inventory entry"""
1455
2832
        tt.set_executability(entry.executable, trans_id)
1456
2833
 
1457
2834
 
1458
 
@deprecated_function(zero_fifteen)
1459
 
def find_interesting(working_tree, target_tree, filenames):
1460
 
    """Find the ids corresponding to specified filenames.
1461
 
    
1462
 
    Deprecated: Please use tree1.paths2ids(filenames, [tree2]).
1463
 
    """
1464
 
    working_tree.lock_read()
1465
 
    try:
1466
 
        target_tree.lock_read()
1467
 
        try:
1468
 
            return working_tree.paths2ids(filenames, [target_tree])
1469
 
        finally:
1470
 
            target_tree.unlock()
1471
 
    finally:
1472
 
        working_tree.unlock()
1473
 
 
1474
 
 
1475
 
@deprecated_function(zero_ninety)
1476
 
def change_entry(tt, file_id, working_tree, target_tree, 
1477
 
                 trans_id_file_id, backups, trans_id, by_parent):
1478
 
    """Replace a file_id's contents with those from a target tree."""
1479
 
    if file_id is None and target_tree is None:
1480
 
        # skip the logic altogether in the deprecation test
1481
 
        return
1482
 
    e_trans_id = trans_id_file_id(file_id)
1483
 
    entry = target_tree.inventory[file_id]
1484
 
    has_contents, contents_mod, meta_mod, = _entry_changes(file_id, entry, 
1485
 
                                                           working_tree)
1486
 
    if contents_mod:
1487
 
        mode_id = e_trans_id
1488
 
        if has_contents:
1489
 
            if not backups:
1490
 
                tt.delete_contents(e_trans_id)
1491
 
            else:
1492
 
                parent_trans_id = trans_id_file_id(entry.parent_id)
1493
 
                backup_name = get_backup_name(entry, by_parent,
1494
 
                                              parent_trans_id, tt)
1495
 
                tt.adjust_path(backup_name, parent_trans_id, e_trans_id)
1496
 
                tt.unversion_file(e_trans_id)
1497
 
                e_trans_id = tt.create_path(entry.name, parent_trans_id)
1498
 
                tt.version_file(file_id, e_trans_id)
1499
 
                trans_id[file_id] = e_trans_id
1500
 
        create_by_entry(tt, entry, target_tree, e_trans_id, mode_id=mode_id)
1501
 
        create_entry_executability(tt, entry, e_trans_id)
1502
 
 
1503
 
    elif meta_mod:
1504
 
        tt.set_executability(entry.executable, e_trans_id)
1505
 
    if tt.final_name(e_trans_id) != entry.name:
1506
 
        adjust_path  = True
1507
 
    else:
1508
 
        parent_id = tt.final_parent(e_trans_id)
1509
 
        parent_file_id = tt.final_file_id(parent_id)
1510
 
        if parent_file_id != entry.parent_id:
1511
 
            adjust_path = True
1512
 
        else:
1513
 
            adjust_path = False
1514
 
    if adjust_path:
1515
 
        parent_trans_id = trans_id_file_id(entry.parent_id)
1516
 
        tt.adjust_path(entry.name, parent_trans_id, e_trans_id)
1517
 
 
1518
 
 
1519
 
def get_backup_name(entry, by_parent, parent_trans_id, tt):
1520
 
    return _get_backup_name(entry.name, by_parent, parent_trans_id, tt)
1521
 
 
1522
 
 
1523
 
def _get_backup_name(name, by_parent, parent_trans_id, tt):
1524
 
    """Produce a backup-style name that appears to be available"""
1525
 
    def name_gen():
1526
 
        counter = 1
1527
 
        while True:
1528
 
            yield "%s.~%d~" % (name, counter)
1529
 
            counter += 1
1530
 
    for new_name in name_gen():
1531
 
        if not tt.has_named_child(by_parent, parent_trans_id, new_name):
1532
 
            return new_name
1533
 
 
1534
 
 
1535
 
def _entry_changes(file_id, entry, working_tree):
1536
 
    """Determine in which ways the inventory entry has changed.
1537
 
 
1538
 
    Returns booleans: has_contents, content_mod, meta_mod
1539
 
    has_contents means there are currently contents, but they differ
1540
 
    contents_mod means contents need to be modified
1541
 
    meta_mod means the metadata needs to be modified
1542
 
    """
1543
 
    cur_entry = working_tree.inventory[file_id]
1544
 
    try:
1545
 
        working_kind = working_tree.kind(file_id)
1546
 
        has_contents = True
1547
 
    except NoSuchFile:
1548
 
        has_contents = False
1549
 
        contents_mod = True
1550
 
        meta_mod = False
1551
 
    if has_contents is True:
1552
 
        if entry.kind != working_kind:
1553
 
            contents_mod, meta_mod = True, False
1554
 
        else:
1555
 
            cur_entry._read_tree_state(working_tree.id2path(file_id), 
1556
 
                                       working_tree)
1557
 
            contents_mod, meta_mod = entry.detect_changes(cur_entry)
1558
 
            cur_entry._forget_tree_state()
1559
 
    return has_contents, contents_mod, meta_mod
1560
 
 
1561
 
 
1562
2835
def revert(working_tree, target_tree, filenames, backups=False,
1563
 
           pb=DummyProgress(), change_reporter=None):
 
2836
           pb=None, change_reporter=None):
1564
2837
    """Revert a working tree's contents to those of a target tree."""
1565
2838
    target_tree.lock_read()
 
2839
    pb = ui.ui_factory.nested_progress_bar()
1566
2840
    tt = TreeTransform(working_tree, pb)
1567
2841
    try:
1568
2842
        pp = ProgressPhase("Revert phase", 3, pb)
1569
 
        pp.next_phase()
1570
 
        child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1571
 
        try:
1572
 
            merge_modified = _alter_files(working_tree, target_tree, tt,
1573
 
                                          child_pb, filenames, backups)
1574
 
        finally:
1575
 
            child_pb.finished()
1576
 
        pp.next_phase()
1577
 
        child_pb = bzrlib.ui.ui_factory.nested_progress_bar()
1578
 
        try:
1579
 
            raw_conflicts = resolve_conflicts(tt, child_pb)
1580
 
        finally:
1581
 
            child_pb.finished()
1582
 
        conflicts = cook_conflicts(raw_conflicts, tt)
 
2843
        conflicts, merge_modified = _prepare_revert_transform(
 
2844
            working_tree, target_tree, tt, filenames, backups, pp)
1583
2845
        if change_reporter:
1584
2846
            change_reporter = delta._ChangeReporter(
1585
2847
                unversioned_filter=working_tree.is_ignored)
1586
 
            delta.report_changes(tt._iter_changes(), change_reporter)
 
2848
            delta.report_changes(tt.iter_changes(), change_reporter)
1587
2849
        for conflict in conflicts:
1588
 
            warning(conflict)
 
2850
            trace.warning(unicode(conflict))
1589
2851
        pp.next_phase()
1590
2852
        tt.apply()
1591
2853
        working_tree.set_merge_modified(merge_modified)
1596
2858
    return conflicts
1597
2859
 
1598
2860
 
 
2861
def _prepare_revert_transform(working_tree, target_tree, tt, filenames,
 
2862
                              backups, pp, basis_tree=None,
 
2863
                              merge_modified=None):
 
2864
    child_pb = ui.ui_factory.nested_progress_bar()
 
2865
    try:
 
2866
        if merge_modified is None:
 
2867
            merge_modified = working_tree.merge_modified()
 
2868
        merge_modified = _alter_files(working_tree, target_tree, tt,
 
2869
                                      child_pb, filenames, backups,
 
2870
                                      merge_modified, basis_tree)
 
2871
    finally:
 
2872
        child_pb.finished()
 
2873
    child_pb = ui.ui_factory.nested_progress_bar()
 
2874
    try:
 
2875
        raw_conflicts = resolve_conflicts(tt, child_pb,
 
2876
            lambda t, c: conflict_pass(t, c, target_tree))
 
2877
    finally:
 
2878
        child_pb.finished()
 
2879
    conflicts = cook_conflicts(raw_conflicts, tt)
 
2880
    return conflicts, merge_modified
 
2881
 
 
2882
 
1599
2883
def _alter_files(working_tree, target_tree, tt, pb, specific_files,
1600
 
                 backups):
1601
 
    merge_modified = working_tree.merge_modified()
1602
 
    change_list = target_tree._iter_changes(working_tree,
 
2884
                 backups, merge_modified, basis_tree=None):
 
2885
    if basis_tree is not None:
 
2886
        basis_tree.lock_read()
 
2887
    # We ask the working_tree for its changes relative to the target, rather
 
2888
    # than the target changes relative to the working tree. Because WT4 has an
 
2889
    # optimizer to compare itself to a target, but no optimizer for the
 
2890
    # reverse.
 
2891
    change_list = working_tree.iter_changes(target_tree,
1603
2892
        specific_files=specific_files, pb=pb)
1604
 
    if target_tree.inventory.root is None:
 
2893
    if target_tree.get_root_id() is None:
1605
2894
        skip_root = True
1606
2895
    else:
1607
2896
        skip_root = False
1608
 
    basis_tree = None
1609
2897
    try:
1610
2898
        deferred_files = []
1611
2899
        for id_num, (file_id, path, changed_content, versioned, parent, name,
1612
2900
                kind, executable) in enumerate(change_list):
1613
 
            if skip_root and file_id[0] is not None and parent[0] is None:
 
2901
            target_path, wt_path = path
 
2902
            target_versioned, wt_versioned = versioned
 
2903
            target_parent, wt_parent = parent
 
2904
            target_name, wt_name = name
 
2905
            target_kind, wt_kind = kind
 
2906
            target_executable, wt_executable = executable
 
2907
            if skip_root and wt_parent is None:
1614
2908
                continue
1615
2909
            trans_id = tt.trans_id_file_id(file_id)
1616
2910
            mode_id = None
1617
2911
            if changed_content:
1618
2912
                keep_content = False
1619
 
                if kind[0] == 'file' and (backups or kind[1] is None):
 
2913
                if wt_kind == 'file' and (backups or target_kind is None):
1620
2914
                    wt_sha1 = working_tree.get_file_sha1(file_id)
1621
2915
                    if merge_modified.get(file_id) != wt_sha1:
1622
2916
                        # acquire the basis tree lazily to prevent the
1625
2919
                        if basis_tree is None:
1626
2920
                            basis_tree = working_tree.basis_tree()
1627
2921
                            basis_tree.lock_read()
1628
 
                        if file_id in basis_tree:
 
2922
                        if basis_tree.has_id(file_id):
1629
2923
                            if wt_sha1 != basis_tree.get_file_sha1(file_id):
1630
2924
                                keep_content = True
1631
 
                        elif kind[1] is None and not versioned[1]:
 
2925
                        elif target_kind is None and not target_versioned:
1632
2926
                            keep_content = True
1633
 
                if kind[0] is not None:
 
2927
                if wt_kind is not None:
1634
2928
                    if not keep_content:
1635
2929
                        tt.delete_contents(trans_id)
1636
 
                    elif kind[1] is not None:
1637
 
                        parent_trans_id = tt.trans_id_file_id(parent[0])
1638
 
                        by_parent = tt.by_parent()
1639
 
                        backup_name = _get_backup_name(name[0], by_parent,
1640
 
                                                       parent_trans_id, tt)
 
2930
                    elif target_kind is not None:
 
2931
                        parent_trans_id = tt.trans_id_file_id(wt_parent)
 
2932
                        backup_name = tt._available_backup_name(
 
2933
                            wt_name, parent_trans_id)
1641
2934
                        tt.adjust_path(backup_name, parent_trans_id, trans_id)
1642
 
                        new_trans_id = tt.create_path(name[0], parent_trans_id)
1643
 
                        if versioned == (True, True):
 
2935
                        new_trans_id = tt.create_path(wt_name, parent_trans_id)
 
2936
                        if wt_versioned and target_versioned:
1644
2937
                            tt.unversion_file(trans_id)
1645
2938
                            tt.version_file(file_id, new_trans_id)
1646
2939
                        # New contents should have the same unix perms as old
1647
2940
                        # contents
1648
2941
                        mode_id = trans_id
1649
2942
                        trans_id = new_trans_id
1650
 
                if kind[1] == 'directory':
 
2943
                if target_kind in ('directory', 'tree-reference'):
1651
2944
                    tt.create_directory(trans_id)
1652
 
                elif kind[1] == 'symlink':
 
2945
                    if target_kind == 'tree-reference':
 
2946
                        revision = target_tree.get_reference_revision(file_id,
 
2947
                                                                      target_path)
 
2948
                        tt.set_tree_reference(revision, trans_id)
 
2949
                elif target_kind == 'symlink':
1653
2950
                    tt.create_symlink(target_tree.get_symlink_target(file_id),
1654
2951
                                      trans_id)
1655
 
                elif kind[1] == 'file':
 
2952
                elif target_kind == 'file':
1656
2953
                    deferred_files.append((file_id, (trans_id, mode_id)))
1657
2954
                    if basis_tree is None:
1658
2955
                        basis_tree = working_tree.basis_tree()
1659
2956
                        basis_tree.lock_read()
1660
2957
                    new_sha1 = target_tree.get_file_sha1(file_id)
1661
 
                    if (file_id in basis_tree and new_sha1 ==
1662
 
                        basis_tree.get_file_sha1(file_id)):
 
2958
                    if (basis_tree.has_id(file_id) and
 
2959
                        new_sha1 == basis_tree.get_file_sha1(file_id)):
1663
2960
                        if file_id in merge_modified:
1664
2961
                            del merge_modified[file_id]
1665
2962
                    else:
1666
2963
                        merge_modified[file_id] = new_sha1
1667
2964
 
1668
2965
                    # preserve the execute bit when backing up
1669
 
                    if keep_content and executable[0] == executable[1]:
1670
 
                        tt.set_executability(executable[1], trans_id)
1671
 
                else:
1672
 
                    assert kind[1] is None
1673
 
            if versioned == (False, True):
 
2966
                    if keep_content and wt_executable == target_executable:
 
2967
                        tt.set_executability(target_executable, trans_id)
 
2968
                elif target_kind is not None:
 
2969
                    raise AssertionError(target_kind)
 
2970
            if not wt_versioned and target_versioned:
1674
2971
                tt.version_file(file_id, trans_id)
1675
 
            if versioned == (True, False):
 
2972
            if wt_versioned and not target_versioned:
1676
2973
                tt.unversion_file(trans_id)
1677
 
            if (name[1] is not None and 
1678
 
                (name[0] != name[1] or parent[0] != parent[1])):
1679
 
                tt.adjust_path(
1680
 
                    name[1], tt.trans_id_file_id(parent[1]), trans_id)
1681
 
            if executable[0] != executable[1] and kind[1] == "file":
1682
 
                tt.set_executability(executable[1], trans_id)
1683
 
        for (trans_id, mode_id), bytes in target_tree.iter_files_bytes(
1684
 
            deferred_files):
1685
 
            tt.create_file(bytes, trans_id, mode_id)
 
2974
            if (target_name is not None and
 
2975
                (wt_name != target_name or wt_parent != target_parent)):
 
2976
                if target_name == '' and target_parent is None:
 
2977
                    parent_trans = ROOT_PARENT
 
2978
                else:
 
2979
                    parent_trans = tt.trans_id_file_id(target_parent)
 
2980
                if wt_parent is None and wt_versioned:
 
2981
                    tt.adjust_root_path(target_name, parent_trans)
 
2982
                else:
 
2983
                    tt.adjust_path(target_name, parent_trans, trans_id)
 
2984
            if wt_executable != target_executable and target_kind == "file":
 
2985
                tt.set_executability(target_executable, trans_id)
 
2986
        if working_tree.supports_content_filtering():
 
2987
            for index, ((trans_id, mode_id), bytes) in enumerate(
 
2988
                target_tree.iter_files_bytes(deferred_files)):
 
2989
                file_id = deferred_files[index][0]
 
2990
                # We're reverting a tree to the target tree so using the
 
2991
                # target tree to find the file path seems the best choice
 
2992
                # here IMO - Ian C 27/Oct/2009
 
2993
                filter_tree_path = target_tree.id2path(file_id)
 
2994
                filters = working_tree._content_filter_stack(filter_tree_path)
 
2995
                bytes = filtered_output_bytes(bytes, filters,
 
2996
                    ContentFilterContext(filter_tree_path, working_tree))
 
2997
                tt.create_file(bytes, trans_id, mode_id)
 
2998
        else:
 
2999
            for (trans_id, mode_id), bytes in target_tree.iter_files_bytes(
 
3000
                deferred_files):
 
3001
                tt.create_file(bytes, trans_id, mode_id)
 
3002
        tt.fixup_new_roots()
1686
3003
    finally:
1687
3004
        if basis_tree is not None:
1688
3005
            basis_tree.unlock()
1689
3006
    return merge_modified
1690
3007
 
1691
3008
 
1692
 
def resolve_conflicts(tt, pb=DummyProgress(), pass_func=None):
 
3009
def resolve_conflicts(tt, pb=None, pass_func=None):
1693
3010
    """Make many conflict-resolution attempts, but die if they fail"""
1694
3011
    if pass_func is None:
1695
3012
        pass_func = conflict_pass
1696
3013
    new_conflicts = set()
 
3014
    pb = ui.ui_factory.nested_progress_bar()
1697
3015
    try:
1698
3016
        for n in range(10):
1699
 
            pb.update('Resolution pass', n+1, 10)
 
3017
            pb.update(gettext('Resolution pass'), n+1, 10)
1700
3018
            conflicts = tt.find_conflicts()
1701
3019
            if len(conflicts) == 0:
1702
3020
                return new_conflicts
1703
3021
            new_conflicts.update(pass_func(tt, conflicts))
1704
3022
        raise MalformedTransform(conflicts=conflicts)
1705
3023
    finally:
1706
 
        pb.clear()
 
3024
        pb.finished()
1707
3025
 
1708
3026
 
1709
3027
def conflict_pass(tt, conflicts, path_tree=None):
1721
3039
                               conflict[1], conflict[2], ))
1722
3040
        elif c_type == 'duplicate':
1723
3041
            # files that were renamed take precedence
1724
 
            new_name = tt.final_name(conflict[1])+'.moved'
1725
3042
            final_parent = tt.final_parent(conflict[1])
1726
3043
            if tt.path_changed(conflict[1]):
1727
 
                tt.adjust_path(new_name, final_parent, conflict[2])
1728
 
                new_conflicts.add((c_type, 'Moved existing file to', 
1729
 
                                   conflict[2], conflict[1]))
 
3044
                existing_file, new_file = conflict[2], conflict[1]
1730
3045
            else:
1731
 
                tt.adjust_path(new_name, final_parent, conflict[1])
1732
 
                new_conflicts.add((c_type, 'Moved existing file to', 
1733
 
                                  conflict[1], conflict[2]))
 
3046
                existing_file, new_file = conflict[1], conflict[2]
 
3047
            new_name = tt.final_name(existing_file) + '.moved'
 
3048
            tt.adjust_path(new_name, final_parent, existing_file)
 
3049
            new_conflicts.add((c_type, 'Moved existing file to',
 
3050
                               existing_file, new_file))
1734
3051
        elif c_type == 'parent loop':
1735
3052
            # break the loop by undoing one of the ops that caused the loop
1736
3053
            cur = conflict[1]
1739
3056
            new_conflicts.add((c_type, 'Cancelled move', cur,
1740
3057
                               tt.final_parent(cur),))
1741
3058
            tt.adjust_path(tt.final_name(cur), tt.get_tree_parent(cur), cur)
1742
 
            
 
3059
 
1743
3060
        elif c_type == 'missing parent':
1744
3061
            trans_id = conflict[1]
1745
 
            try:
1746
 
                tt.cancel_deletion(trans_id)
1747
 
                new_conflicts.add(('deleting parent', 'Not deleting', 
1748
 
                                   trans_id))
1749
 
            except KeyError:
1750
 
                tt.create_directory(trans_id)
1751
 
                new_conflicts.add((c_type, 'Created directory', trans_id))
 
3062
            if trans_id in tt._removed_contents:
 
3063
                cancel_deletion = True
 
3064
                orphans = tt._get_potential_orphans(trans_id)
 
3065
                if orphans:
 
3066
                    cancel_deletion = False
 
3067
                    # All children are orphans
 
3068
                    for o in orphans:
 
3069
                        try:
 
3070
                            tt.new_orphan(o, trans_id)
 
3071
                        except OrphaningError:
 
3072
                            # Something bad happened so we cancel the directory
 
3073
                            # deletion which will leave it in place with a
 
3074
                            # conflict. The user can deal with it from there.
 
3075
                            # Note that this also catch the case where we don't
 
3076
                            # want to create orphans and leave the directory in
 
3077
                            # place.
 
3078
                            cancel_deletion = True
 
3079
                            break
 
3080
                if cancel_deletion:
 
3081
                    # Cancel the directory deletion
 
3082
                    tt.cancel_deletion(trans_id)
 
3083
                    new_conflicts.add(('deleting parent', 'Not deleting',
 
3084
                                       trans_id))
 
3085
            else:
 
3086
                create = True
1752
3087
                try:
1753
3088
                    tt.final_name(trans_id)
1754
3089
                except NoFinalPath:
1755
 
                    file_id = tt.final_file_id(trans_id)
1756
 
                    entry = path_tree.inventory[file_id]
1757
 
                    parent_trans_id = tt.trans_id_file_id(entry.parent_id)
1758
 
                    tt.adjust_path(entry.name, parent_trans_id, trans_id)
 
3090
                    if path_tree is not None:
 
3091
                        file_id = tt.final_file_id(trans_id)
 
3092
                        if file_id is None:
 
3093
                            file_id = tt.inactive_file_id(trans_id)
 
3094
                        _, entry = path_tree.iter_entries_by_dir(
 
3095
                            [file_id]).next()
 
3096
                        # special-case the other tree root (move its
 
3097
                        # children to current root)
 
3098
                        if entry.parent_id is None:
 
3099
                            create = False
 
3100
                            moved = _reparent_transform_children(
 
3101
                                tt, trans_id, tt.root)
 
3102
                            for child in moved:
 
3103
                                new_conflicts.add((c_type, 'Moved to root',
 
3104
                                                   child))
 
3105
                        else:
 
3106
                            parent_trans_id = tt.trans_id_file_id(
 
3107
                                entry.parent_id)
 
3108
                            tt.adjust_path(entry.name, parent_trans_id,
 
3109
                                           trans_id)
 
3110
                if create:
 
3111
                    tt.create_directory(trans_id)
 
3112
                    new_conflicts.add((c_type, 'Created directory', trans_id))
1759
3113
        elif c_type == 'unversioned parent':
1760
 
            tt.version_file(tt.inactive_file_id(conflict[1]), conflict[1])
 
3114
            file_id = tt.inactive_file_id(conflict[1])
 
3115
            # special-case the other tree root (move its children instead)
 
3116
            if path_tree and path_tree.has_id(file_id):
 
3117
                if path_tree.path2id('') == file_id:
 
3118
                    # This is the root entry, skip it
 
3119
                    continue
 
3120
            tt.version_file(file_id, conflict[1])
1761
3121
            new_conflicts.add((c_type, 'Versioned directory', conflict[1]))
 
3122
        elif c_type == 'non-directory parent':
 
3123
            parent_id = conflict[1]
 
3124
            parent_parent = tt.final_parent(parent_id)
 
3125
            parent_name = tt.final_name(parent_id)
 
3126
            parent_file_id = tt.final_file_id(parent_id)
 
3127
            new_parent_id = tt.new_directory(parent_name + '.new',
 
3128
                parent_parent, parent_file_id)
 
3129
            _reparent_transform_children(tt, parent_id, new_parent_id)
 
3130
            if parent_file_id is not None:
 
3131
                tt.unversion_file(parent_id)
 
3132
            new_conflicts.add((c_type, 'Created directory', new_parent_id))
 
3133
        elif c_type == 'versioning no contents':
 
3134
            tt.cancel_versioning(conflict[1])
1762
3135
    return new_conflicts
1763
3136
 
1764
3137
 
1765
3138
def cook_conflicts(raw_conflicts, tt):
1766
3139
    """Generate a list of cooked conflicts, sorted by file path"""
1767
 
    from bzrlib.conflicts import Conflict
1768
3140
    conflict_iter = iter_cook_conflicts(raw_conflicts, tt)
1769
 
    return sorted(conflict_iter, key=Conflict.sort_key)
 
3141
    return sorted(conflict_iter, key=conflicts.Conflict.sort_key)
1770
3142
 
1771
3143
 
1772
3144
def iter_cook_conflicts(raw_conflicts, tt):
1773
 
    from bzrlib.conflicts import Conflict
1774
3145
    fp = FinalPaths(tt)
1775
3146
    for conflict in raw_conflicts:
1776
3147
        c_type = conflict[0]
1778
3149
        modified_path = fp.get_path(conflict[2])
1779
3150
        modified_id = tt.final_file_id(conflict[2])
1780
3151
        if len(conflict) == 3:
1781
 
            yield Conflict.factory(c_type, action=action, path=modified_path,
1782
 
                                     file_id=modified_id)
1783
 
             
 
3152
            yield conflicts.Conflict.factory(
 
3153
                c_type, action=action, path=modified_path, file_id=modified_id)
 
3154
 
1784
3155
        else:
1785
3156
            conflicting_path = fp.get_path(conflict[3])
1786
3157
            conflicting_id = tt.final_file_id(conflict[3])
1787
 
            yield Conflict.factory(c_type, action=action, path=modified_path,
1788
 
                                   file_id=modified_id, 
1789
 
                                   conflict_path=conflicting_path,
1790
 
                                   conflict_file_id=conflicting_id)
 
3158
            yield conflicts.Conflict.factory(
 
3159
                c_type, action=action, path=modified_path,
 
3160
                file_id=modified_id,
 
3161
                conflict_path=conflicting_path,
 
3162
                conflict_file_id=conflicting_id)
1791
3163
 
1792
3164
 
1793
3165
class _FileMover(object):
1798
3170
        self.pending_deletions = []
1799
3171
 
1800
3172
    def rename(self, from_, to):
1801
 
        """Rename a file from one path to another.  Functions like os.rename"""
1802
 
        os.rename(from_, to)
 
3173
        """Rename a file from one path to another."""
 
3174
        try:
 
3175
            os.rename(from_, to)
 
3176
        except OSError, e:
 
3177
            if e.errno in (errno.EEXIST, errno.ENOTEMPTY):
 
3178
                raise errors.FileExists(to, str(e))
 
3179
            # normal OSError doesn't include filenames so it's hard to see where
 
3180
            # the problem is, see https://bugs.launchpad.net/bzr/+bug/491763
 
3181
            raise errors.TransformRenameFailed(from_, to, str(e), e.errno)
1803
3182
        self.past_renames.append((from_, to))
1804
3183
 
1805
3184
    def pre_delete(self, from_, to):
1815
3194
    def rollback(self):
1816
3195
        """Reverse all renames that have been performed"""
1817
3196
        for from_, to in reversed(self.past_renames):
1818
 
            os.rename(to, from_)
 
3197
            try:
 
3198
                os.rename(to, from_)
 
3199
            except OSError, e:
 
3200
                raise errors.TransformRenameFailed(to, from_, str(e), e.errno)
1819
3201
        # after rollback, don't reuse _FileMover
1820
3202
        past_renames = None
1821
3203
        pending_deletions = None