1
# Copyright (C) 2005, 2006 Canonical Ltd
3
# This program is free software; you can redistribute it and/or modify
4
# it under the terms of the GNU General Public License as published by
5
# the Free Software Foundation; either version 2 of the License, or
6
# (at your option) any later version.
8
# This program is distributed in the hope that it will be useful,
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11
# GNU General Public License for more details.
13
# You should have received a copy of the GNU General Public License
14
# along with this program; if not, write to the Free Software
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17
# FIXME: This refactoring of the workingtree code doesn't seem to keep
18
# the WorkingTree's copy of the inventory in sync with the branch. The
19
# branch modifies its working inventory when it does a commit to make
20
# missing files permanently removed.
22
# TODO: Maybe also keep the full path of the entry, and the children?
23
# But those depend on its position within a particular inventory, and
24
# it would be nice not to need to hold the backpointer here.
26
# This should really be an id randomly assigned when the tree is
27
# created, but it's not for now.
39
from bzrlib.osutils import (pumpfile, quotefn, splitpath, joinpath,
40
pathjoin, sha_strings)
41
from bzrlib.errors import (NotVersionedError, InvalidEntryName,
42
BzrError, BzrCheckError, BinaryFile)
43
from bzrlib.trace import mutter
46
class InventoryEntry(object):
47
"""Description of a versioned file.
49
An InventoryEntry has the following fields, which are also
50
present in the XML inventory-entry element:
55
(within the parent directory)
58
file_id of the parent directory, or ROOT_ID
61
the revision_id in which this variation of this file was
65
Indicates that this file should be executable on systems
69
sha-1 of the text of the file
72
size in bytes of the text of the file
74
(reading a version 4 tree created a text_id field.)
79
>>> i.add(InventoryDirectory('123', 'src', ROOT_ID))
80
InventoryDirectory('123', 'src', parent_id='TREE_ROOT')
81
>>> i.add(InventoryFile('2323', 'hello.c', parent_id='123'))
82
InventoryFile('2323', 'hello.c', parent_id='123')
83
>>> shouldbe = {0: 'src', 1: pathjoin('src','hello.c')}
84
>>> for ix, j in enumerate(i.iter_entries()):
85
... print (j[0] == shouldbe[ix], j[1])
87
(True, InventoryDirectory('123', 'src', parent_id='TREE_ROOT'))
88
(True, InventoryFile('2323', 'hello.c', parent_id='123'))
89
>>> i.add(InventoryFile('2323', 'bye.c', '123'))
90
Traceback (most recent call last):
92
BzrError: inventory already contains entry with id {2323}
93
>>> i.add(InventoryFile('2324', 'bye.c', '123'))
94
InventoryFile('2324', 'bye.c', parent_id='123')
95
>>> i.add(InventoryDirectory('2325', 'wibble', '123'))
96
InventoryDirectory('2325', 'wibble', parent_id='123')
97
>>> i.path2id('src/wibble')
101
>>> i.add(InventoryFile('2326', 'wibble.c', '2325'))
102
InventoryFile('2326', 'wibble.c', parent_id='2325')
104
InventoryFile('2326', 'wibble.c', parent_id='2325')
105
>>> for path, entry in i.iter_entries():
107
... assert i.path2id(path)
114
>>> i.id2path('2326')
115
'src/wibble/wibble.c'
118
# Constants returned by describe_change()
120
# TODO: These should probably move to some kind of FileChangeDescription
121
# class; that's like what's inside a TreeDelta but we want to be able to
122
# generate them just for one file at a time.
124
MODIFIED_AND_RENAMED = 'modified and renamed'
126
__slots__ = ['text_sha1', 'text_size', 'file_id', 'name', 'kind',
127
'text_id', 'parent_id', 'children', 'executable',
130
def _add_text_to_weave(self, new_lines, parents, weave_store, transaction):
131
versionedfile = weave_store.get_weave_or_empty(self.file_id,
133
versionedfile.add_lines(self.revision, parents, new_lines)
134
versionedfile.clear_cache()
136
def detect_changes(self, old_entry):
137
"""Return a (text_modified, meta_modified) from this to old_entry.
139
_read_tree_state must have been called on self and old_entry prior to
140
calling detect_changes.
144
def diff(self, text_diff, from_label, tree, to_label, to_entry, to_tree,
145
output_to, reverse=False):
146
"""Perform a diff from this to to_entry.
148
text_diff will be used for textual difference calculation.
149
This is a template method, override _diff in child classes.
151
self._read_tree_state(tree.id2path(self.file_id), tree)
153
# cannot diff from one kind to another - you must do a removal
154
# and an addif they do not match.
155
assert self.kind == to_entry.kind
156
to_entry._read_tree_state(to_tree.id2path(to_entry.file_id),
158
self._diff(text_diff, from_label, tree, to_label, to_entry, to_tree,
161
def _diff(self, text_diff, from_label, tree, to_label, to_entry, to_tree,
162
output_to, reverse=False):
163
"""Perform a diff between two entries of the same kind."""
165
def find_previous_heads(self, previous_inventories,
166
versioned_file_store,
169
"""Return the revisions and entries that directly preceed this.
171
Returned as a map from revision to inventory entry.
173
This is a map containing the file revisions in all parents
174
for which the file exists, and its revision is not a parent of
175
any other. If the file is new, the set will be empty.
177
:param versioned_file_store: A store where ancestry data on this
178
file id can be queried.
179
:param transaction: The transaction that queries to the versioned
180
file store should be completed under.
181
:param entry_vf: The entry versioned file, if its already available.
183
def get_ancestors(weave, entry):
184
return set(weave.get_ancestry(entry.revision))
185
# revision:ie mapping for each ie found in previous_inventories.
187
# revision:ie mapping with one revision for each head.
189
# revision: ancestor list for each head
191
# identify candidate head revision ids.
192
for inv in previous_inventories:
193
if self.file_id in inv:
194
ie = inv[self.file_id]
195
assert ie.file_id == self.file_id
196
if ie.revision in candidates:
197
# same revision value in two different inventories:
198
# correct possible inconsistencies:
199
# * there was a bug in revision updates with 'x' bit
202
if candidates[ie.revision].executable != ie.executable:
203
candidates[ie.revision].executable = False
204
ie.executable = False
205
except AttributeError:
207
# must now be the same.
208
assert candidates[ie.revision] == ie
210
# add this revision as a candidate.
211
candidates[ie.revision] = ie
213
# common case optimisation
214
if len(candidates) == 1:
215
# if there is only one candidate revision found
216
# then we can opening the versioned file to access ancestry:
217
# there cannot be any ancestors to eliminate when there is
218
# only one revision available.
219
heads[ie.revision] = ie
222
# eliminate ancestors amongst the available candidates:
223
# heads are those that are not an ancestor of any other candidate
224
# - this provides convergence at a per-file level.
225
for ie in candidates.values():
226
# may be an ancestor of a known head:
227
already_present = 0 != len(
228
[head for head in heads
229
if ie.revision in head_ancestors[head]])
231
# an ancestor of an analyzed candidate.
233
# not an ancestor of a known head:
234
# load the versioned file for this file id if needed
236
entry_vf = versioned_file_store.get_weave_or_empty(
237
self.file_id, transaction)
238
ancestors = get_ancestors(entry_vf, ie)
239
# may knock something else out:
240
check_heads = list(heads.keys())
241
for head in check_heads:
242
if head in ancestors:
243
# this previously discovered 'head' is not
244
# really a head - its an ancestor of the newly
247
head_ancestors[ie.revision] = ancestors
248
heads[ie.revision] = ie
251
def get_tar_item(self, root, dp, now, tree):
252
"""Get a tarfile item and a file stream for its content."""
253
item = tarfile.TarInfo(pathjoin(root, dp))
254
# TODO: would be cool to actually set it to the timestamp of the
255
# revision it was last changed
257
fileobj = self._put_in_tar(item, tree)
261
"""Return true if the object this entry represents has textual data.
263
Note that textual data includes binary content.
265
Also note that all entries get weave files created for them.
266
This attribute is primarily used when upgrading from old trees that
267
did not have the weave index for all inventory entries.
271
def __init__(self, file_id, name, parent_id, text_id=None):
272
"""Create an InventoryEntry
274
The filename must be a single component, relative to the
275
parent directory; it cannot be a whole path or relative name.
277
>>> e = InventoryFile('123', 'hello.c', ROOT_ID)
282
>>> e = InventoryFile('123', 'src/hello.c', ROOT_ID)
283
Traceback (most recent call last):
284
InvalidEntryName: Invalid entry name: src/hello.c
286
assert isinstance(name, basestring), name
287
if '/' in name or '\\' in name:
288
raise InvalidEntryName(name=name)
289
self.executable = False
291
self.text_sha1 = None
292
self.text_size = None
293
self.file_id = file_id
295
self.text_id = text_id
296
self.parent_id = parent_id
297
self.symlink_target = None
299
def kind_character(self):
300
"""Return a short kind indicator useful for appending to names."""
301
raise BzrError('unknown kind %r' % self.kind)
303
known_kinds = ('file', 'directory', 'symlink', 'root_directory')
305
def _put_in_tar(self, item, tree):
306
"""populate item for stashing in a tar, and return the content stream.
308
If no content is available, return None.
310
raise BzrError("don't know how to export {%s} of kind %r" %
311
(self.file_id, self.kind))
313
def put_on_disk(self, dest, dp, tree):
314
"""Create a representation of self on disk in the prefix dest.
316
This is a template method - implement _put_on_disk in subclasses.
318
fullpath = pathjoin(dest, dp)
319
self._put_on_disk(fullpath, tree)
320
mutter(" export {%s} kind %s to %s", self.file_id,
323
def _put_on_disk(self, fullpath, tree):
324
"""Put this entry onto disk at fullpath, from tree tree."""
325
raise BzrError("don't know how to export {%s} of kind %r" % (self.file_id, self.kind))
327
def sorted_children(self):
328
l = self.children.items()
333
def versionable_kind(kind):
334
return kind in ('file', 'directory', 'symlink')
336
def check(self, checker, rev_id, inv, tree):
337
"""Check this inventory entry is intact.
339
This is a template method, override _check for kind specific
342
:param checker: Check object providing context for the checks;
343
can be used to find out what parts of the repository have already
345
:param rev_id: Revision id from which this InventoryEntry was loaded.
346
Not necessarily the last-changed revision for this file.
347
:param inv: Inventory from which the entry was loaded.
348
:param tree: RevisionTree for this entry.
350
if self.parent_id != None:
351
if not inv.has_id(self.parent_id):
352
raise BzrCheckError('missing parent {%s} in inventory for revision {%s}'
353
% (self.parent_id, rev_id))
354
self._check(checker, rev_id, tree)
356
def _check(self, checker, rev_id, tree):
357
"""Check this inventory entry for kind specific errors."""
358
raise BzrCheckError('unknown entry kind %r in revision {%s}' %
362
"""Clone this inventory entry."""
363
raise NotImplementedError
366
def describe_change(old_entry, new_entry):
367
"""Describe the change between old_entry and this.
369
This smells of being an InterInventoryEntry situation, but as its
370
the first one, we're making it a static method for now.
372
An entry with a different parent, or different name is considered
373
to be renamed. Reparenting is an internal detail.
374
Note that renaming the parent does not trigger a rename for the
377
# TODO: Perhaps return an object rather than just a string
378
if old_entry is new_entry:
379
# also the case of both being None
381
elif old_entry is None:
383
elif new_entry is None:
385
text_modified, meta_modified = new_entry.detect_changes(old_entry)
386
if text_modified or meta_modified:
390
# TODO 20060511 (mbp, rbc) factor out 'detect_rename' here.
391
if old_entry.parent_id != new_entry.parent_id:
393
elif old_entry.name != new_entry.name:
397
if renamed and not modified:
398
return InventoryEntry.RENAMED
399
if modified and not renamed:
401
if modified and renamed:
402
return InventoryEntry.MODIFIED_AND_RENAMED
406
return ("%s(%r, %r, parent_id=%r)"
407
% (self.__class__.__name__,
412
def snapshot(self, revision, path, previous_entries,
413
work_tree, weave_store, transaction):
414
"""Make a snapshot of this entry which may or may not have changed.
416
This means that all its fields are populated, that it has its
417
text stored in the text store or weave.
419
mutter('new parents of %s are %r', path, previous_entries)
420
self._read_tree_state(path, work_tree)
421
if len(previous_entries) == 1:
422
# cannot be unchanged unless there is only one parent file rev.
423
parent_ie = previous_entries.values()[0]
424
if self._unchanged(parent_ie):
425
mutter("found unchanged entry")
426
self.revision = parent_ie.revision
428
return self._snapshot_into_revision(revision, previous_entries,
429
work_tree, weave_store, transaction)
431
def _snapshot_into_revision(self, revision, previous_entries, work_tree,
432
weave_store, transaction):
433
"""Record this revision unconditionally into a store.
435
The entry's last-changed revision property (`revision`) is updated to
436
that of the new revision.
438
:param revision: id of the new revision that is being recorded.
440
:returns: String description of the commit (e.g. "merged", "modified"), etc.
442
mutter('new revision {%s} for {%s}', revision, self.file_id)
443
self.revision = revision
444
self._snapshot_text(previous_entries, work_tree, weave_store,
447
def _snapshot_text(self, file_parents, work_tree, weave_store, transaction):
448
"""Record the 'text' of this entry, whatever form that takes.
450
This default implementation simply adds an empty text.
452
mutter('storing file {%s} in revision {%s}',
453
self.file_id, self.revision)
454
self._add_text_to_weave([], file_parents.keys(), weave_store, transaction)
456
def __eq__(self, other):
457
if not isinstance(other, InventoryEntry):
458
return NotImplemented
460
return ((self.file_id == other.file_id)
461
and (self.name == other.name)
462
and (other.symlink_target == self.symlink_target)
463
and (self.text_sha1 == other.text_sha1)
464
and (self.text_size == other.text_size)
465
and (self.text_id == other.text_id)
466
and (self.parent_id == other.parent_id)
467
and (self.kind == other.kind)
468
and (self.revision == other.revision)
469
and (self.executable == other.executable)
472
def __ne__(self, other):
473
return not (self == other)
476
raise ValueError('not hashable')
478
def _unchanged(self, previous_ie):
479
"""Has this entry changed relative to previous_ie.
481
This method should be overriden in child classes.
484
# different inv parent
485
if previous_ie.parent_id != self.parent_id:
488
elif previous_ie.name != self.name:
492
def _read_tree_state(self, path, work_tree):
493
"""Populate fields in the inventory entry from the given tree.
495
Note that this should be modified to be a noop on virtual trees
496
as all entries created there are prepopulated.
498
# TODO: Rather than running this manually, we should check the
499
# working sha1 and other expensive properties when they're
500
# first requested, or preload them if they're already known
501
pass # nothing to do by default
503
def _forget_tree_state(self):
507
class RootEntry(InventoryEntry):
509
def _check(self, checker, rev_id, tree):
510
"""See InventoryEntry._check"""
512
def __init__(self, file_id):
513
self.file_id = file_id
515
self.kind = 'root_directory'
516
self.parent_id = None
519
def __eq__(self, other):
520
if not isinstance(other, RootEntry):
521
return NotImplemented
523
return (self.file_id == other.file_id) \
524
and (self.children == other.children)
527
class InventoryDirectory(InventoryEntry):
528
"""A directory in an inventory."""
530
def _check(self, checker, rev_id, tree):
531
"""See InventoryEntry._check"""
532
if self.text_sha1 != None or self.text_size != None or self.text_id != None:
533
raise BzrCheckError('directory {%s} has text in revision {%s}'
534
% (self.file_id, rev_id))
537
other = InventoryDirectory(self.file_id, self.name, self.parent_id)
538
other.revision = self.revision
539
# note that children are *not* copied; they're pulled across when
543
def __init__(self, file_id, name, parent_id):
544
super(InventoryDirectory, self).__init__(file_id, name, parent_id)
546
self.kind = 'directory'
548
def kind_character(self):
549
"""See InventoryEntry.kind_character."""
552
def _put_in_tar(self, item, tree):
553
"""See InventoryEntry._put_in_tar."""
554
item.type = tarfile.DIRTYPE
561
def _put_on_disk(self, fullpath, tree):
562
"""See InventoryEntry._put_on_disk."""
566
class InventoryFile(InventoryEntry):
567
"""A file in an inventory."""
569
def _check(self, checker, tree_revision_id, tree):
570
"""See InventoryEntry._check"""
571
t = (self.file_id, self.revision)
572
if t in checker.checked_texts:
573
prev_sha = checker.checked_texts[t]
574
if prev_sha != self.text_sha1:
575
raise BzrCheckError('mismatched sha1 on {%s} in {%s}' %
576
(self.file_id, tree_revision_id))
578
checker.repeated_text_cnt += 1
581
if self.file_id not in checker.checked_weaves:
582
mutter('check weave {%s}', self.file_id)
583
w = tree.get_weave(self.file_id)
584
# Not passing a progress bar, because it creates a new
585
# progress, which overwrites the current progress,
586
# and doesn't look nice
588
checker.checked_weaves[self.file_id] = True
590
w = tree.get_weave(self.file_id)
592
mutter('check version {%s} of {%s}', tree_revision_id, self.file_id)
593
checker.checked_text_cnt += 1
594
# We can't check the length, because Weave doesn't store that
595
# information, and the whole point of looking at the weave's
596
# sha1sum is that we don't have to extract the text.
597
if self.text_sha1 != w.get_sha1(self.revision):
598
raise BzrCheckError('text {%s} version {%s} wrong sha1'
599
% (self.file_id, self.revision))
600
checker.checked_texts[t] = self.text_sha1
603
other = InventoryFile(self.file_id, self.name, self.parent_id)
604
other.executable = self.executable
605
other.text_id = self.text_id
606
other.text_sha1 = self.text_sha1
607
other.text_size = self.text_size
608
other.revision = self.revision
611
def detect_changes(self, old_entry):
612
"""See InventoryEntry.detect_changes."""
613
assert self.text_sha1 != None
614
assert old_entry.text_sha1 != None
615
text_modified = (self.text_sha1 != old_entry.text_sha1)
616
meta_modified = (self.executable != old_entry.executable)
617
return text_modified, meta_modified
619
def _diff(self, text_diff, from_label, tree, to_label, to_entry, to_tree,
620
output_to, reverse=False):
621
"""See InventoryEntry._diff."""
623
from_text = tree.get_file(self.file_id).readlines()
625
to_text = to_tree.get_file(to_entry.file_id).readlines()
629
text_diff(from_label, from_text,
630
to_label, to_text, output_to)
632
text_diff(to_label, to_text,
633
from_label, from_text, output_to)
636
label_pair = (to_label, from_label)
638
label_pair = (from_label, to_label)
639
print >> output_to, "Binary files %s and %s differ" % label_pair
642
"""See InventoryEntry.has_text."""
645
def __init__(self, file_id, name, parent_id):
646
super(InventoryFile, self).__init__(file_id, name, parent_id)
649
def kind_character(self):
650
"""See InventoryEntry.kind_character."""
653
def _put_in_tar(self, item, tree):
654
"""See InventoryEntry._put_in_tar."""
655
item.type = tarfile.REGTYPE
656
fileobj = tree.get_file(self.file_id)
657
item.size = self.text_size
658
if tree.is_executable(self.file_id):
664
def _put_on_disk(self, fullpath, tree):
665
"""See InventoryEntry._put_on_disk."""
666
pumpfile(tree.get_file(self.file_id), file(fullpath, 'wb'))
667
if tree.is_executable(self.file_id):
668
os.chmod(fullpath, 0755)
670
def _read_tree_state(self, path, work_tree):
671
"""See InventoryEntry._read_tree_state."""
672
self.text_sha1 = work_tree.get_file_sha1(self.file_id, path=path)
673
self.executable = work_tree.is_executable(self.file_id, path=path)
675
def _forget_tree_state(self):
676
self.text_sha1 = None
677
self.executable = None
679
def _snapshot_text(self, file_parents, work_tree, versionedfile_store, transaction):
680
"""See InventoryEntry._snapshot_text."""
681
mutter('storing text of file {%s} in revision {%s} into %r',
682
self.file_id, self.revision, versionedfile_store)
683
# special case to avoid diffing on renames or
685
if (len(file_parents) == 1
686
and self.text_sha1 == file_parents.values()[0].text_sha1
687
and self.text_size == file_parents.values()[0].text_size):
688
previous_ie = file_parents.values()[0]
689
versionedfile = versionedfile_store.get_weave(self.file_id, transaction)
690
versionedfile.clone_text(self.revision, previous_ie.revision, file_parents.keys())
692
new_lines = work_tree.get_file(self.file_id).readlines()
693
self._add_text_to_weave(new_lines, file_parents.keys(), versionedfile_store,
695
self.text_sha1 = sha_strings(new_lines)
696
self.text_size = sum(map(len, new_lines))
699
def _unchanged(self, previous_ie):
700
"""See InventoryEntry._unchanged."""
701
compatible = super(InventoryFile, self)._unchanged(previous_ie)
702
if self.text_sha1 != previous_ie.text_sha1:
705
# FIXME: 20050930 probe for the text size when getting sha1
706
# in _read_tree_state
707
self.text_size = previous_ie.text_size
708
if self.executable != previous_ie.executable:
713
class InventoryLink(InventoryEntry):
714
"""A file in an inventory."""
716
__slots__ = ['symlink_target']
718
def _check(self, checker, rev_id, tree):
719
"""See InventoryEntry._check"""
720
if self.text_sha1 != None or self.text_size != None or self.text_id != None:
721
raise BzrCheckError('symlink {%s} has text in revision {%s}'
722
% (self.file_id, rev_id))
723
if self.symlink_target == None:
724
raise BzrCheckError('symlink {%s} has no target in revision {%s}'
725
% (self.file_id, rev_id))
728
other = InventoryLink(self.file_id, self.name, self.parent_id)
729
other.symlink_target = self.symlink_target
730
other.revision = self.revision
733
def detect_changes(self, old_entry):
734
"""See InventoryEntry.detect_changes."""
735
# FIXME: which _modified field should we use ? RBC 20051003
736
text_modified = (self.symlink_target != old_entry.symlink_target)
738
mutter(" symlink target changed")
739
meta_modified = False
740
return text_modified, meta_modified
742
def _diff(self, text_diff, from_label, tree, to_label, to_entry, to_tree,
743
output_to, reverse=False):
744
"""See InventoryEntry._diff."""
745
from_text = self.symlink_target
746
if to_entry is not None:
747
to_text = to_entry.symlink_target
752
print >>output_to, '=== target changed %r => %r' % (from_text, to_text)
755
print >>output_to, '=== target was %r' % self.symlink_target
757
print >>output_to, '=== target is %r' % self.symlink_target
759
def __init__(self, file_id, name, parent_id):
760
super(InventoryLink, self).__init__(file_id, name, parent_id)
761
self.kind = 'symlink'
763
def kind_character(self):
764
"""See InventoryEntry.kind_character."""
767
def _put_in_tar(self, item, tree):
768
"""See InventoryEntry._put_in_tar."""
769
item.type = tarfile.SYMTYPE
773
item.linkname = self.symlink_target
776
def _put_on_disk(self, fullpath, tree):
777
"""See InventoryEntry._put_on_disk."""
779
os.symlink(self.symlink_target, fullpath)
781
raise BzrError("Failed to create symlink %r -> %r, error: %s" % (fullpath, self.symlink_target, e))
783
def _read_tree_state(self, path, work_tree):
784
"""See InventoryEntry._read_tree_state."""
785
self.symlink_target = work_tree.get_symlink_target(self.file_id)
787
def _forget_tree_state(self):
788
self.symlink_target = None
790
def _unchanged(self, previous_ie):
791
"""See InventoryEntry._unchanged."""
792
compatible = super(InventoryLink, self)._unchanged(previous_ie)
793
if self.symlink_target != previous_ie.symlink_target:
798
class Inventory(object):
799
"""Inventory of versioned files in a tree.
801
This describes which file_id is present at each point in the tree,
802
and possibly the SHA-1 or other information about the file.
803
Entries can be looked up either by path or by file_id.
805
The inventory represents a typical unix file tree, with
806
directories containing files and subdirectories. We never store
807
the full path to a file, because renaming a directory implicitly
808
moves all of its contents. This class internally maintains a
809
lookup tree that allows the children under a directory to be
812
InventoryEntry objects must not be modified after they are
813
inserted, other than through the Inventory API.
815
>>> inv = Inventory()
816
>>> inv.add(InventoryFile('123-123', 'hello.c', ROOT_ID))
817
InventoryFile('123-123', 'hello.c', parent_id='TREE_ROOT')
818
>>> inv['123-123'].name
821
May be treated as an iterator or set to look up file ids:
823
>>> bool(inv.path2id('hello.c'))
828
May also look up by name:
830
>>> [x[0] for x in inv.iter_entries()]
832
>>> inv = Inventory('TREE_ROOT-12345678-12345678')
833
>>> inv.add(InventoryFile('123-123', 'hello.c', ROOT_ID))
834
InventoryFile('123-123', 'hello.c', parent_id='TREE_ROOT-12345678-12345678')
836
def __init__(self, root_id=ROOT_ID, revision_id=None):
837
"""Create or read an inventory.
839
If a working directory is specified, the inventory is read
840
from there. If the file is specified, read from that. If not,
841
the inventory is created empty.
843
The inventory is created with a default root directory, with
846
# We are letting Branch.create() create a unique inventory
847
# root id. Rather than generating a random one here.
849
# root_id = bzrlib.branch.gen_file_id('TREE_ROOT')
850
self.root = RootEntry(root_id)
851
self.revision_id = revision_id
852
self._byid = {self.root.file_id: self.root}
856
# TODO: jam 20051218 Should copy also copy the revision_id?
857
other = Inventory(self.root.file_id)
858
# copy recursively so we know directories will be added before
859
# their children. There are more efficient ways than this...
860
for path, entry in self.iter_entries():
861
if entry == self.root:
863
other.add(entry.copy())
868
return iter(self._byid)
872
"""Returns number of entries."""
873
return len(self._byid)
876
def iter_entries(self, from_dir=None):
877
"""Return (path, entry) pairs, in order by name."""
881
elif isinstance(from_dir, basestring):
882
from_dir = self._byid[from_dir]
884
children = from_dir.children.items()
886
children = collections.deque(children)
887
stack = [(u'', children)]
889
from_dir_relpath, children = stack[-1]
892
name, ie = children.popleft()
894
# we know that from_dir_relpath never ends in a slash
895
# and 'f' doesn't begin with one, we can do a string op, rather
896
# than the checks of pathjoin(), though this means that all paths
898
path = from_dir_relpath + '/' + name
902
if ie.kind != 'directory':
905
# But do this child first
906
new_children = ie.children.items()
908
new_children = collections.deque(new_children)
909
stack.append((path, new_children))
910
# Break out of inner loop, so that we start outer loop with child
913
# if we finished all children, pop it off the stack
918
"""Return list of (path, ie) for all entries except the root.
920
This may be faster than iter_entries.
923
def descend(dir_ie, dir_path):
924
kids = dir_ie.children.items()
926
for name, ie in kids:
927
child_path = pathjoin(dir_path, name)
928
accum.append((child_path, ie))
929
if ie.kind == 'directory':
930
descend(ie, child_path)
932
descend(self.root, u'')
936
def directories(self):
937
"""Return (path, entry) pairs for all directories, including the root.
940
def descend(parent_ie, parent_path):
941
accum.append((parent_path, parent_ie))
943
kids = [(ie.name, ie) for ie in parent_ie.children.itervalues() if ie.kind == 'directory']
946
for name, child_ie in kids:
947
child_path = pathjoin(parent_path, name)
948
descend(child_ie, child_path)
949
descend(self.root, u'')
954
def __contains__(self, file_id):
955
"""True if this entry contains a file with given id.
957
>>> inv = Inventory()
958
>>> inv.add(InventoryFile('123', 'foo.c', ROOT_ID))
959
InventoryFile('123', 'foo.c', parent_id='TREE_ROOT')
965
return file_id in self._byid
968
def __getitem__(self, file_id):
969
"""Return the entry for given file_id.
971
>>> inv = Inventory()
972
>>> inv.add(InventoryFile('123123', 'hello.c', ROOT_ID))
973
InventoryFile('123123', 'hello.c', parent_id='TREE_ROOT')
974
>>> inv['123123'].name
978
return self._byid[file_id]
981
raise BzrError("can't look up file_id None")
983
raise BzrError("file_id {%s} not in inventory" % file_id)
986
def get_file_kind(self, file_id):
987
return self._byid[file_id].kind
989
def get_child(self, parent_id, filename):
990
return self[parent_id].children.get(filename)
993
def add(self, entry):
994
"""Add entry to inventory.
996
To add a file to a branch ready to be committed, use Branch.add,
999
Returns the new entry object.
1001
if entry.file_id in self._byid:
1002
raise BzrError("inventory already contains entry with id {%s}" % entry.file_id)
1004
if entry.parent_id == ROOT_ID or entry.parent_id is None:
1005
entry.parent_id = self.root.file_id
1008
parent = self._byid[entry.parent_id]
1010
raise BzrError("parent_id {%s} not in inventory" % entry.parent_id)
1012
if parent.children.has_key(entry.name):
1013
raise BzrError("%s is already versioned" %
1014
pathjoin(self.id2path(parent.file_id), entry.name))
1016
self._byid[entry.file_id] = entry
1017
parent.children[entry.name] = entry
1021
def add_path(self, relpath, kind, file_id=None, parent_id=None):
1022
"""Add entry from a path.
1024
The immediate parent must already be versioned.
1026
Returns the new entry object."""
1028
parts = bzrlib.osutils.splitpath(relpath)
1032
file_id = bzrlib.workingtree.gen_root_id()
1033
self.root = RootEntry(file_id)
1034
self._byid = {self.root.file_id: self.root}
1037
parent_path = parts[:-1]
1038
parent_id = self.path2id(parent_path)
1039
if parent_id == None:
1040
raise NotVersionedError(path=parent_path)
1041
ie = make_entry(kind, parts[-1], parent_id, file_id)
1044
def __delitem__(self, file_id):
1045
"""Remove entry by id.
1047
>>> inv = Inventory()
1048
>>> inv.add(InventoryFile('123', 'foo.c', ROOT_ID))
1049
InventoryFile('123', 'foo.c', parent_id='TREE_ROOT')
1058
assert ie.parent_id is None or \
1059
self[ie.parent_id].children[ie.name] == ie
1061
del self._byid[file_id]
1062
if ie.parent_id is not None:
1063
del self[ie.parent_id].children[ie.name]
1066
def __eq__(self, other):
1067
"""Compare two sets by comparing their contents.
1069
>>> i1 = Inventory()
1070
>>> i2 = Inventory()
1073
>>> i1.add(InventoryFile('123', 'foo', ROOT_ID))
1074
InventoryFile('123', 'foo', parent_id='TREE_ROOT')
1077
>>> i2.add(InventoryFile('123', 'foo', ROOT_ID))
1078
InventoryFile('123', 'foo', parent_id='TREE_ROOT')
1082
if not isinstance(other, Inventory):
1083
return NotImplemented
1085
if len(self._byid) != len(other._byid):
1086
# shortcut: obviously not the same
1089
return self._byid == other._byid
1092
def __ne__(self, other):
1093
return not self.__eq__(other)
1097
raise ValueError('not hashable')
1099
def _iter_file_id_parents(self, file_id):
1100
"""Yield the parents of file_id up to the root."""
1101
while file_id != None:
1103
ie = self._byid[file_id]
1105
raise BzrError("file_id {%s} not found in inventory" % file_id)
1107
file_id = ie.parent_id
1109
def get_idpath(self, file_id):
1110
"""Return a list of file_ids for the path to an entry.
1112
The list contains one element for each directory followed by
1113
the id of the file itself. So the length of the returned list
1114
is equal to the depth of the file in the tree, counting the
1115
root directory as depth 1.
1118
for parent in self._iter_file_id_parents(file_id):
1119
p.insert(0, parent.file_id)
1122
def id2path(self, file_id):
1123
"""Return as a string the path to file_id.
1126
>>> e = i.add(InventoryDirectory('src-id', 'src', ROOT_ID))
1127
>>> e = i.add(InventoryFile('foo-id', 'foo.c', parent_id='src-id'))
1128
>>> print i.id2path('foo-id')
1131
# get all names, skipping root
1132
return '/'.join(reversed(
1133
[parent.name for parent in
1134
self._iter_file_id_parents(file_id)][:-1]))
1136
def path2id(self, name):
1137
"""Walk down through directories to return entry of last component.
1139
names may be either a list of path components, or a single
1140
string, in which case it is automatically split.
1142
This returns the entry of the last component in the path,
1143
which may be either a file or a directory.
1145
Returns None IFF the path is not found.
1147
if isinstance(name, types.StringTypes):
1148
name = splitpath(name)
1150
# mutter("lookup path %r" % name)
1155
cie = parent.children[f]
1156
assert cie.name == f
1157
assert cie.parent_id == parent.file_id
1160
# or raise an error?
1163
return parent.file_id
1166
def has_filename(self, names):
1167
return bool(self.path2id(names))
1170
def has_id(self, file_id):
1171
return self._byid.has_key(file_id)
1174
def rename(self, file_id, new_parent_id, new_name):
1175
"""Move a file within the inventory.
1177
This can change either the name, or the parent, or both.
1179
This does not move the working file."""
1180
if not is_valid_name(new_name):
1181
raise BzrError("not an acceptable filename: %r" % new_name)
1183
new_parent = self._byid[new_parent_id]
1184
if new_name in new_parent.children:
1185
raise BzrError("%r already exists in %r" % (new_name, self.id2path(new_parent_id)))
1187
new_parent_idpath = self.get_idpath(new_parent_id)
1188
if file_id in new_parent_idpath:
1189
raise BzrError("cannot move directory %r into a subdirectory of itself, %r"
1190
% (self.id2path(file_id), self.id2path(new_parent_id)))
1192
file_ie = self._byid[file_id]
1193
old_parent = self._byid[file_ie.parent_id]
1195
# TODO: Don't leave things messed up if this fails
1197
del old_parent.children[file_ie.name]
1198
new_parent.children[new_name] = file_ie
1200
file_ie.name = new_name
1201
file_ie.parent_id = new_parent_id
1204
def make_entry(kind, name, parent_id, file_id=None):
1205
"""Create an inventory entry.
1207
:param kind: the type of inventory entry to create.
1208
:param name: the basename of the entry.
1209
:param parent_id: the parent_id of the entry.
1210
:param file_id: the file_id to use. if None, one will be created.
1213
file_id = bzrlib.workingtree.gen_file_id(name)
1214
if kind == 'directory':
1215
return InventoryDirectory(file_id, name, parent_id)
1216
elif kind == 'file':
1217
return InventoryFile(file_id, name, parent_id)
1218
elif kind == 'symlink':
1219
return InventoryLink(file_id, name, parent_id)
1221
raise BzrError("unknown kind %r" % kind)
1227
def is_valid_name(name):
1229
if _NAME_RE == None:
1230
_NAME_RE = re.compile(r'^[^/\\]+$')
1232
return bool(_NAME_RE.match(name))
added
removed
bzrlib/inventory.py
