36
45
An InventoryEntry has the following fields, which are also
37
46
present in the XML inventory-entry element:
40
* *name*: (only the basename within the directory, must not
42
* *kind*: "directory" or "file"
43
* *directory_id*: (if absent/null means the branch root directory)
44
* *text_sha1*: only for files
45
* *text_size*: in bytes, only for files
46
* *text_id*: identifier for the text version, only for files
48
InventoryEntries can also exist inside a WorkingTree
49
inventory, in which case they are not yet bound to a
50
particular revision of the file. In that case the text_sha1,
51
text_size and text_id are absent.
51
(within the parent directory)
54
file_id of the parent directory, or ROOT_ID
57
the revision_id in which this variation of this file was
61
Indicates that this file should be executable on systems
65
sha-1 of the text of the file
68
size in bytes of the text of the file
70
(reading a version 4 tree created a text_id field.)
54
72
>>> i = Inventory()
57
>>> i.add(InventoryEntry('123', 'src', 'directory', ROOT_ID))
58
>>> i.add(InventoryEntry('2323', 'hello.c', 'file', parent_id='123'))
75
>>> i.add(InventoryDirectory('123', 'src', ROOT_ID))
76
InventoryDirectory('123', 'src', parent_id='TREE_ROOT')
77
>>> i.add(InventoryFile('2323', 'hello.c', parent_id='123'))
78
InventoryFile('2323', 'hello.c', parent_id='123')
59
79
>>> for j in i.iter_entries():
62
('src', InventoryEntry('123', 'src', kind='directory', parent_id='TREE_ROOT'))
63
('src/hello.c', InventoryEntry('2323', 'hello.c', kind='file', parent_id='123'))
64
>>> i.add(InventoryEntry('2323', 'bye.c', 'file', '123'))
82
('src', InventoryDirectory('123', 'src', parent_id='TREE_ROOT'))
83
('src/hello.c', InventoryFile('2323', 'hello.c', parent_id='123'))
84
>>> i.add(InventoryFile('2323', 'bye.c', '123'))
65
85
Traceback (most recent call last):
67
87
BzrError: inventory already contains entry with id {2323}
68
>>> i.add(InventoryEntry('2324', 'bye.c', 'file', '123'))
69
>>> i.add(InventoryEntry('2325', 'wibble', 'directory', '123'))
88
>>> i.add(InventoryFile('2324', 'bye.c', '123'))
89
InventoryFile('2324', 'bye.c', parent_id='123')
90
>>> i.add(InventoryDirectory('2325', 'wibble', '123'))
91
InventoryDirectory('2325', 'wibble', parent_id='123')
70
92
>>> i.path2id('src/wibble')
74
>>> i.add(InventoryEntry('2326', 'wibble.c', 'file', '2325'))
96
>>> i.add(InventoryFile('2326', 'wibble.c', '2325'))
97
InventoryFile('2326', 'wibble.c', parent_id='2325')
76
InventoryEntry('2326', 'wibble.c', kind='file', parent_id='2325')
77
>>> for j in i.iter_entries():
79
... assert i.path2id(j[0])
99
InventoryFile('2326', 'wibble.c', parent_id='2325')
100
>>> for path, entry in i.iter_entries():
101
... print path.replace('\\\\', '/') # for win32 os.sep
102
... assert i.path2id(path)
85
108
src/wibble/wibble.c
109
>>> i.id2path('2326').replace('\\\\', '/')
87
110
'src/wibble/wibble.c'
89
TODO: Maybe also keep the full path of the entry, and the children?
90
But those depend on its position within a particular inventory, and
91
it would be nice not to need to hold the backpointer here.
94
# TODO: split InventoryEntry into subclasses for files,
95
# directories, etc etc.
97
113
__slots__ = ['text_sha1', 'text_size', 'file_id', 'name', 'kind',
98
'text_id', 'parent_id', 'children', ]
100
def __init__(self, file_id, name, kind, parent_id, text_id=None):
114
'text_id', 'parent_id', 'children', 'executable',
117
def _add_text_to_weave(self, new_lines, parents, weave_store, transaction):
118
weave_store.add_text(self.file_id, self.revision, new_lines, parents,
121
def detect_changes(self, old_entry):
122
"""Return a (text_modified, meta_modified) from this to old_entry.
124
_read_tree_state must have been called on self and old_entry prior to
125
calling detect_changes.
129
def diff(self, text_diff, from_label, tree, to_label, to_entry, to_tree,
130
output_to, reverse=False):
131
"""Perform a diff from this to to_entry.
133
text_diff will be used for textual difference calculation.
134
This is a template method, override _diff in child classes.
136
self._read_tree_state(tree.id2path(self.file_id), tree)
138
# cannot diff from one kind to another - you must do a removal
139
# and an addif they do not match.
140
assert self.kind == to_entry.kind
141
to_entry._read_tree_state(to_tree.id2path(to_entry.file_id),
143
self._diff(text_diff, from_label, tree, to_label, to_entry, to_tree,
146
def _diff(self, text_diff, from_label, tree, to_label, to_entry, to_tree,
147
output_to, reverse=False):
148
"""Perform a diff between two entries of the same kind."""
150
def find_previous_heads(self, previous_inventories, entry_weave):
151
"""Return the revisions and entries that directly preceed this.
153
Returned as a map from revision to inventory entry.
155
This is a map containing the file revisions in all parents
156
for which the file exists, and its revision is not a parent of
157
any other. If the file is new, the set will be empty.
159
def get_ancestors(weave, entry):
160
return set(map(weave.idx_to_name,
161
weave.inclusions([weave.lookup(entry.revision)])))
164
for inv in previous_inventories:
165
if self.file_id in inv:
166
ie = inv[self.file_id]
167
assert ie.file_id == self.file_id
168
if ie.revision in heads:
169
assert heads[ie.revision] == ie
171
# may want to add it.
172
# may already be covered:
173
already_present = 0 != len(
174
[head for head in heads
175
if ie.revision in head_ancestors[head]])
177
# an ancestor of a known head.
180
ancestors = get_ancestors(entry_weave, ie)
181
# may knock something else out:
182
check_heads = list(heads.keys())
183
for head in check_heads:
184
if head in ancestors:
185
# this head is not really a head
187
head_ancestors[ie.revision] = ancestors
188
heads[ie.revision] = ie
191
def get_tar_item(self, root, dp, now, tree):
192
"""Get a tarfile item and a file stream for its content."""
193
item = tarfile.TarInfo(os.path.join(root, dp))
194
# TODO: would be cool to actually set it to the timestamp of the
195
# revision it was last changed
197
fileobj = self._put_in_tar(item, tree)
201
"""Return true if the object this entry represents has textual data.
203
Note that textual data includes binary content.
205
Also note that all entries get weave files created for them.
206
This attribute is primarily used when upgrading from old trees that
207
did not have the weave index for all inventory entries.
211
def __init__(self, file_id, name, parent_id, text_id=None):
101
212
"""Create an InventoryEntry
103
214
The filename must be a single component, relative to the
104
215
parent directory; it cannot be a whole path or relative name.
106
>>> e = InventoryEntry('123', 'hello.c', 'file', ROOT_ID)
217
>>> e = InventoryFile('123', 'hello.c', ROOT_ID)
111
>>> e = InventoryEntry('123', 'src/hello.c', 'file', ROOT_ID)
222
>>> e = InventoryFile('123', 'src/hello.c', ROOT_ID)
112
223
Traceback (most recent call last):
113
224
BzrCheckError: InventoryEntry name 'src/hello.c' is invalid
226
assert isinstance(name, basestring), name
115
227
if '/' in name or '\\' in name:
116
228
raise BzrCheckError('InventoryEntry name %r is invalid' % name)
230
self.executable = False
118
232
self.text_sha1 = None
119
233
self.text_size = None
121
234
self.file_id = file_id
124
236
self.text_id = text_id
125
237
self.parent_id = parent_id
126
if kind == 'directory':
131
raise BzrError("unhandled entry kind %r" % kind)
238
self.symlink_target = None
240
def kind_character(self):
241
"""Return a short kind indicator useful for appending to names."""
242
raise BzrError('unknown kind %r' % self.kind)
244
known_kinds = ('file', 'directory', 'symlink', 'root_directory')
246
def _put_in_tar(self, item, tree):
247
"""populate item for stashing in a tar, and return the content stream.
249
If no content is available, return None.
251
raise BzrError("don't know how to export {%s} of kind %r" %
252
(self.file_id, self.kind))
254
def put_on_disk(self, dest, dp, tree):
255
"""Create a representation of self on disk in the prefix dest.
257
This is a template method - implement _put_on_disk in subclasses.
259
fullpath = appendpath(dest, dp)
260
self._put_on_disk(fullpath, tree)
261
mutter(" export {%s} kind %s to %s" % (self.file_id, self.kind, fullpath))
263
def _put_on_disk(self, fullpath, tree):
264
"""Put this entry onto disk at fullpath, from tree tree."""
265
raise BzrError("don't know how to export {%s} of kind %r" % (self.file_id, self.kind))
135
267
def sorted_children(self):
136
268
l = self.children.items()
273
def versionable_kind(kind):
274
return kind in ('file', 'directory', 'symlink')
276
def check(self, checker, rev_id, inv, tree):
277
"""Check this inventory entry is intact.
279
This is a template method, override _check for kind specific
282
if self.parent_id != None:
283
if not inv.has_id(self.parent_id):
284
raise BzrCheckError('missing parent {%s} in inventory for revision {%s}'
285
% (self.parent_id, rev_id))
286
self._check(checker, rev_id, tree)
288
def _check(self, checker, rev_id, tree):
289
"""Check this inventory entry for kind specific errors."""
290
raise BzrCheckError('unknown entry kind %r in revision {%s}' %
142
other = InventoryEntry(self.file_id, self.name, self.kind,
143
self.parent_id, text_id=self.text_id)
144
other.text_sha1 = self.text_sha1
145
other.text_size = self.text_size
146
# note that children are *not* copied; they're pulled across when
295
"""Clone this inventory entry."""
296
raise NotImplementedError
298
def _get_snapshot_change(self, previous_entries):
299
if len(previous_entries) > 1:
301
elif len(previous_entries) == 0:
304
return 'modified/renamed/reparented'
151
306
def __repr__(self):
152
return ("%s(%r, %r, kind=%r, parent_id=%r)"
307
return ("%s(%r, %r, parent_id=%r)"
153
308
% (self.__class__.__name__,
160
def to_element(self):
161
"""Convert to XML element"""
162
from bzrlib.xml import Element
166
e.set('name', self.name)
167
e.set('file_id', self.file_id)
168
e.set('kind', self.kind)
170
if self.text_size != None:
171
e.set('text_size', '%d' % self.text_size)
173
for f in ['text_id', 'text_sha1']:
178
# to be conservative, we don't externalize the root pointers
179
# for now, leaving them as null in the xml form. in a future
180
# version it will be implied by nested elements.
181
if self.parent_id != ROOT_ID:
182
assert isinstance(self.parent_id, basestring)
183
e.set('parent_id', self.parent_id)
190
def from_element(cls, elt):
191
assert elt.tag == 'entry'
193
## original format inventories don't have a parent_id for
194
## nodes in the root directory, but it's cleaner to use one
196
parent_id = elt.get('parent_id')
197
if parent_id == None:
200
self = cls(elt.get('file_id'), elt.get('name'), elt.get('kind'), parent_id)
201
self.text_id = elt.get('text_id')
202
self.text_sha1 = elt.get('text_sha1')
204
## mutter("read inventoryentry: %r" % (elt.attrib))
206
v = elt.get('text_size')
207
self.text_size = v and int(v)
212
from_element = classmethod(from_element)
313
def snapshot(self, revision, path, previous_entries,
314
work_tree, weave_store, transaction):
315
"""Make a snapshot of this entry which may or may not have changed.
317
This means that all its fields are populated, that it has its
318
text stored in the text store or weave.
320
mutter('new parents of %s are %r', path, previous_entries)
321
self._read_tree_state(path, work_tree)
322
if len(previous_entries) == 1:
323
# cannot be unchanged unless there is only one parent file rev.
324
parent_ie = previous_entries.values()[0]
325
if self._unchanged(parent_ie):
326
mutter("found unchanged entry")
327
self.revision = parent_ie.revision
329
return self.snapshot_revision(revision, previous_entries,
330
work_tree, weave_store, transaction)
332
def snapshot_revision(self, revision, previous_entries, work_tree,
333
weave_store, transaction):
334
"""Record this revision unconditionally."""
335
mutter('new revision for {%s}', self.file_id)
336
self.revision = revision
337
change = self._get_snapshot_change(previous_entries)
338
self._snapshot_text(previous_entries, work_tree, weave_store,
342
def _snapshot_text(self, file_parents, work_tree, weave_store, transaction):
343
"""Record the 'text' of this entry, whatever form that takes.
345
This default implementation simply adds an empty text.
347
mutter('storing file {%s} in revision {%s}',
348
self.file_id, self.revision)
349
self._add_text_to_weave([], file_parents, weave_store, transaction)
214
351
def __eq__(self, other):
215
352
if not isinstance(other, InventoryEntry):
216
353
return NotImplemented
218
return (self.file_id == other.file_id) \
219
and (self.name == other.name) \
220
and (self.text_sha1 == other.text_sha1) \
221
and (self.text_size == other.text_size) \
222
and (self.text_id == other.text_id) \
223
and (self.parent_id == other.parent_id) \
224
and (self.kind == other.kind)
355
return ((self.file_id == other.file_id)
356
and (self.name == other.name)
357
and (other.symlink_target == self.symlink_target)
358
and (self.text_sha1 == other.text_sha1)
359
and (self.text_size == other.text_size)
360
and (self.text_id == other.text_id)
361
and (self.parent_id == other.parent_id)
362
and (self.kind == other.kind)
363
and (self.revision == other.revision)
364
and (self.executable == other.executable)
227
367
def __ne__(self, other):
228
368
return not (self == other)
248
412
and (self.children == other.children)
415
class InventoryDirectory(InventoryEntry):
416
"""A directory in an inventory."""
418
def _check(self, checker, rev_id, tree):
419
"""See InventoryEntry._check"""
420
if self.text_sha1 != None or self.text_size != None or self.text_id != None:
421
raise BzrCheckError('directory {%s} has text in revision {%s}'
422
% (self.file_id, rev_id))
425
other = InventoryDirectory(self.file_id, self.name, self.parent_id)
426
other.revision = self.revision
427
# note that children are *not* copied; they're pulled across when
431
def __init__(self, file_id, name, parent_id):
432
super(InventoryDirectory, self).__init__(file_id, name, parent_id)
434
self.kind = 'directory'
436
def kind_character(self):
437
"""See InventoryEntry.kind_character."""
440
def _put_in_tar(self, item, tree):
441
"""See InventoryEntry._put_in_tar."""
442
item.type = tarfile.DIRTYPE
449
def _put_on_disk(self, fullpath, tree):
450
"""See InventoryEntry._put_on_disk."""
454
class InventoryFile(InventoryEntry):
455
"""A file in an inventory."""
457
def _check(self, checker, rev_id, tree):
458
"""See InventoryEntry._check"""
459
revision = self.revision
460
t = (self.file_id, revision)
461
if t in checker.checked_texts:
462
prev_sha = checker.checked_texts[t]
463
if prev_sha != self.text_sha1:
464
raise BzrCheckError('mismatched sha1 on {%s} in {%s}' %
465
(self.file_id, rev_id))
467
checker.repeated_text_cnt += 1
469
mutter('check version {%s} of {%s}', rev_id, self.file_id)
470
file_lines = tree.get_file_lines(self.file_id)
471
checker.checked_text_cnt += 1
472
if self.text_size != sum(map(len, file_lines)):
473
raise BzrCheckError('text {%s} wrong size' % self.text_id)
474
if self.text_sha1 != sha_strings(file_lines):
475
raise BzrCheckError('text {%s} wrong sha1' % self.text_id)
476
checker.checked_texts[t] = self.text_sha1
479
other = InventoryFile(self.file_id, self.name, self.parent_id)
480
other.executable = self.executable
481
other.text_id = self.text_id
482
other.text_sha1 = self.text_sha1
483
other.text_size = self.text_size
484
other.revision = self.revision
487
def detect_changes(self, old_entry):
488
"""See InventoryEntry.detect_changes."""
489
assert self.text_sha1 != None
490
assert old_entry.text_sha1 != None
491
text_modified = (self.text_sha1 != old_entry.text_sha1)
492
meta_modified = (self.executable != old_entry.executable)
493
return text_modified, meta_modified
495
def _diff(self, text_diff, from_label, tree, to_label, to_entry, to_tree,
496
output_to, reverse=False):
497
"""See InventoryEntry._diff."""
498
from_text = tree.get_file(self.file_id).readlines()
500
to_text = to_tree.get_file(to_entry.file_id).readlines()
504
text_diff(from_label, from_text,
505
to_label, to_text, output_to)
507
text_diff(to_label, to_text,
508
from_label, from_text, output_to)
511
"""See InventoryEntry.has_text."""
514
def __init__(self, file_id, name, parent_id):
515
super(InventoryFile, self).__init__(file_id, name, parent_id)
518
def kind_character(self):
519
"""See InventoryEntry.kind_character."""
522
def _put_in_tar(self, item, tree):
523
"""See InventoryEntry._put_in_tar."""
524
item.type = tarfile.REGTYPE
525
fileobj = tree.get_file(self.file_id)
526
item.size = self.text_size
527
if tree.is_executable(self.file_id):
533
def _put_on_disk(self, fullpath, tree):
534
"""See InventoryEntry._put_on_disk."""
535
pumpfile(tree.get_file(self.file_id), file(fullpath, 'wb'))
536
if tree.is_executable(self.file_id):
537
os.chmod(fullpath, 0755)
539
def _read_tree_state(self, path, work_tree):
540
"""See InventoryEntry._read_tree_state."""
541
self.text_sha1 = work_tree.get_file_sha1(self.file_id)
542
self.executable = work_tree.is_executable(self.file_id)
544
def _snapshot_text(self, file_parents, work_tree, weave_store, transaction):
545
"""See InventoryEntry._snapshot_text."""
546
mutter('storing file {%s} in revision {%s}',
547
self.file_id, self.revision)
548
# special case to avoid diffing on renames or
550
if (len(file_parents) == 1
551
and self.text_sha1 == file_parents.values()[0].text_sha1
552
and self.text_size == file_parents.values()[0].text_size):
553
previous_ie = file_parents.values()[0]
554
weave_store.add_identical_text(
555
self.file_id, previous_ie.revision,
556
self.revision, file_parents, transaction)
558
new_lines = work_tree.get_file(self.file_id).readlines()
559
self._add_text_to_weave(new_lines, file_parents, weave_store,
561
self.text_sha1 = sha_strings(new_lines)
562
self.text_size = sum(map(len, new_lines))
565
def _unchanged(self, previous_ie):
566
"""See InventoryEntry._unchanged."""
567
compatible = super(InventoryFile, self)._unchanged(previous_ie)
568
if self.text_sha1 != previous_ie.text_sha1:
571
# FIXME: 20050930 probe for the text size when getting sha1
572
# in _read_tree_state
573
self.text_size = previous_ie.text_size
577
class InventoryLink(InventoryEntry):
578
"""A file in an inventory."""
580
__slots__ = ['symlink_target']
582
def _check(self, checker, rev_id, tree):
583
"""See InventoryEntry._check"""
584
if self.text_sha1 != None or self.text_size != None or self.text_id != None:
585
raise BzrCheckError('symlink {%s} has text in revision {%s}'
586
% (self.file_id, rev_id))
587
if self.symlink_target == None:
588
raise BzrCheckError('symlink {%s} has no target in revision {%s}'
589
% (self.file_id, rev_id))
592
other = InventoryLink(self.file_id, self.name, self.parent_id)
593
other.symlink_target = self.symlink_target
594
other.revision = self.revision
597
def detect_changes(self, old_entry):
598
"""See InventoryEntry.detect_changes."""
599
# FIXME: which _modified field should we use ? RBC 20051003
600
text_modified = (self.symlink_target != old_entry.symlink_target)
602
mutter(" symlink target changed")
603
meta_modified = False
604
return text_modified, meta_modified
606
def _diff(self, text_diff, from_label, tree, to_label, to_entry, to_tree,
607
output_to, reverse=False):
608
"""See InventoryEntry._diff."""
609
from_text = self.symlink_target
610
if to_entry is not None:
611
to_text = to_entry.symlink_target
616
print >>output_to, '=== target changed %r => %r' % (from_text, to_text)
619
print >>output_to, '=== target was %r' % self.symlink_target
621
print >>output_to, '=== target is %r' % self.symlink_target
623
def __init__(self, file_id, name, parent_id):
624
super(InventoryLink, self).__init__(file_id, name, parent_id)
625
self.kind = 'symlink'
627
def kind_character(self):
628
"""See InventoryEntry.kind_character."""
631
def _put_in_tar(self, item, tree):
632
"""See InventoryEntry._put_in_tar."""
633
iterm.type = tarfile.SYMTYPE
637
item.linkname = self.symlink_target
640
def _put_on_disk(self, fullpath, tree):
641
"""See InventoryEntry._put_on_disk."""
643
os.symlink(self.symlink_target, fullpath)
645
raise BzrError("Failed to create symlink %r -> %r, error: %s" % (fullpath, self.symlink_target, e))
647
def _read_tree_state(self, path, work_tree):
648
"""See InventoryEntry._read_tree_state."""
649
self.symlink_target = work_tree.get_symlink_target(self.file_id)
651
def _unchanged(self, previous_ie):
652
"""See InventoryEntry._unchanged."""
653
compatible = super(InventoryLink, self)._unchanged(previous_ie)
654
if self.symlink_target != previous_ie.symlink_target:
252
659
class Inventory(object):
253
660
"""Inventory of versioned files in a tree.