865
1080
descend(child_ie, child_path)
866
1081
descend(self.root, u'')
869
def path2id(self, relpath):
870
"""Walk down through directories to return entry of last component.
872
:param relpath: may be either a list of path components, or a single
873
string, in which case it is automatically split.
875
This returns the entry of the last component in the path,
876
which may be either a file or a directory.
878
Returns None IFF the path is not found.
880
if isinstance(relpath, basestring):
881
names = osutils.splitpath(relpath)
887
except errors.NoSuchId:
888
# root doesn't exist yet so nothing else can
894
children = getattr(parent, 'children', None)
903
return parent.file_id
905
def filter(self, specific_fileids):
906
"""Get an inventory view filtered against a set of file-ids.
908
Children of directories and parents are included.
910
The result may or may not reference the underlying inventory
911
so it should be treated as immutable.
913
interesting_parents = set()
914
for fileid in specific_fileids:
916
interesting_parents.update(self.get_idpath(fileid))
917
except errors.NoSuchId:
918
# This fileid is not in the inventory - that's ok
920
entries = self.iter_entries()
921
if self.root is None:
922
return Inventory(root_id=None)
923
other = Inventory(entries.next()[1].file_id)
924
other.root.revision = self.root.revision
925
other.revision_id = self.revision_id
926
directories_to_expand = set()
927
for path, entry in entries:
928
file_id = entry.file_id
929
if (file_id in specific_fileids
930
or entry.parent_id in directories_to_expand):
931
if entry.kind == 'directory':
932
directories_to_expand.add(file_id)
933
elif file_id not in interesting_parents:
935
other.add(entry.copy())
938
def get_idpath(self, file_id):
939
"""Return a list of file_ids for the path to an entry.
941
The list contains one element for each directory followed by
942
the id of the file itself. So the length of the returned list
943
is equal to the depth of the file in the tree, counting the
944
root directory as depth 1.
947
for parent in self._iter_file_id_parents(file_id):
948
p.insert(0, parent.file_id)
952
class Inventory(CommonInventory):
953
"""Mutable dict based in-memory inventory.
955
We never store the full path to a file, because renaming a directory
956
implicitly moves all of its contents. This class internally maintains a
957
lookup tree that allows the children under a directory to be
960
>>> inv = Inventory()
961
>>> inv.add(InventoryFile('123-123', 'hello.c', ROOT_ID))
962
InventoryFile('123-123', 'hello.c', parent_id='TREE_ROOT', sha1=None, len=None, revision=None)
963
>>> inv['123-123'].name
966
Id's may be looked up from paths:
968
>>> inv.path2id('hello.c')
970
>>> inv.has_id('123-123')
973
There are iterators over the contents:
975
>>> [entry[0] for entry in inv.iter_entries()]
979
def __init__(self, root_id=ROOT_ID, revision_id=None):
980
"""Create or read an inventory.
982
If a working directory is specified, the inventory is read
983
from there. If the file is specified, read from that. If not,
984
the inventory is created empty.
986
The inventory is created with a default root directory, with
989
if root_id is not None:
990
self._set_root(InventoryDirectory(root_id, u'', None))
994
self.revision_id = revision_id
997
# More than one page of ouput is not useful anymore to debug
1000
contents = repr(self._byid)
1001
if len(contents) > max_len:
1002
contents = contents[:(max_len-len(closing))] + closing
1003
return "<Inventory object at %x, contents=%r>" % (id(self), contents)
1005
def apply_delta(self, delta):
1006
"""Apply a delta to this inventory.
1008
See the inventory developers documentation for the theory behind
1011
If delta application fails the inventory is left in an indeterminate
1012
state and must not be used.
1014
:param delta: A list of changes to apply. After all the changes are
1015
applied the final inventory must be internally consistent, but it
1016
is ok to supply changes which, if only half-applied would have an
1017
invalid result - such as supplying two changes which rename two
1018
files, 'A' and 'B' with each other : [('A', 'B', 'A-id', a_entry),
1019
('B', 'A', 'B-id', b_entry)].
1021
Each change is a tuple, of the form (old_path, new_path, file_id,
1024
When new_path is None, the change indicates the removal of an entry
1025
from the inventory and new_entry will be ignored (using None is
1026
appropriate). If new_path is not None, then new_entry must be an
1027
InventoryEntry instance, which will be incorporated into the
1028
inventory (and replace any existing entry with the same file id).
1030
When old_path is None, the change indicates the addition of
1031
a new entry to the inventory.
1033
When neither new_path nor old_path are None, the change is a
1034
modification to an entry, such as a rename, reparent, kind change
1037
The children attribute of new_entry is ignored. This is because
1038
this method preserves children automatically across alterations to
1039
the parent of the children, and cases where the parent id of a
1040
child is changing require the child to be passed in as a separate
1041
change regardless. E.g. in the recursive deletion of a directory -
1042
the directory's children must be included in the delta, or the
1043
final inventory will be invalid.
1045
Note that a file_id must only appear once within a given delta.
1046
An AssertionError is raised otherwise.
1048
# Check that the delta is legal. It would be nice if this could be
1049
# done within the loops below but it's safer to validate the delta
1050
# before starting to mutate the inventory, as there isn't a rollback
1052
list(_check_delta_unique_ids(_check_delta_unique_new_paths(
1053
_check_delta_unique_old_paths(_check_delta_ids_match_entry(
1054
_check_delta_ids_are_valid(
1055
_check_delta_new_path_entry_both_or_None(
1059
# Remove all affected items which were in the original inventory,
1060
# starting with the longest paths, thus ensuring parents are examined
1061
# after their children, which means that everything we examine has no
1062
# modified children remaining by the time we examine it.
1063
for old_path, file_id in sorted(((op, f) for op, np, f, e in delta
1064
if op is not None), reverse=True):
1065
# Preserve unaltered children of file_id for later reinsertion.
1066
file_id_children = getattr(self[file_id], 'children', {})
1067
if len(file_id_children):
1068
children[file_id] = file_id_children
1069
if self.id2path(file_id) != old_path:
1070
raise errors.InconsistentDelta(old_path, file_id,
1071
"Entry was at wrong other path %r." % self.id2path(file_id))
1072
# Remove file_id and the unaltered children. If file_id is not
1073
# being deleted it will be reinserted back later.
1074
self.remove_recursive_id(file_id)
1075
# Insert all affected which should be in the new inventory, reattaching
1076
# their children if they had any. This is done from shortest path to
1077
# longest, ensuring that items which were modified and whose parents in
1078
# the resulting inventory were also modified, are inserted after their
1080
for new_path, f, new_entry in sorted((np, f, e) for op, np, f, e in
1081
delta if np is not None):
1082
if new_entry.kind == 'directory':
1083
# Pop the child which to allow detection of children whose
1084
# parents were deleted and which were not reattached to a new
1086
replacement = InventoryDirectory(new_entry.file_id,
1087
new_entry.name, new_entry.parent_id)
1088
replacement.revision = new_entry.revision
1089
replacement.children = children.pop(replacement.file_id, {})
1090
new_entry = replacement
1093
except errors.DuplicateFileId:
1094
raise errors.InconsistentDelta(new_path, new_entry.file_id,
1095
"New id is already present in target.")
1096
except AttributeError:
1097
raise errors.InconsistentDelta(new_path, new_entry.file_id,
1098
"Parent is not a directory.")
1099
if self.id2path(new_entry.file_id) != new_path:
1100
raise errors.InconsistentDelta(new_path, new_entry.file_id,
1101
"New path is not consistent with parent path.")
1103
# Get the parent id that was deleted
1104
parent_id, children = children.popitem()
1105
raise errors.InconsistentDelta("<deleted>", parent_id,
1106
"The file id was deleted but its children were not deleted.")
1108
def create_by_apply_delta(self, inventory_delta, new_revision_id,
1109
propagate_caches=False):
1110
"""See CHKInventory.create_by_apply_delta()"""
1111
new_inv = self.copy()
1112
new_inv.apply_delta(inventory_delta)
1113
new_inv.revision_id = new_revision_id
1116
def _set_root(self, ie):
1118
self._byid = {self.root.file_id: self.root}
1121
# TODO: jam 20051218 Should copy also copy the revision_id?
1122
entries = self.iter_entries()
1123
if self.root is None:
1124
return Inventory(root_id=None)
1125
other = Inventory(entries.next()[1].file_id)
1126
other.root.revision = self.root.revision
1127
# copy recursively so we know directories will be added before
1128
# their children. There are more efficient ways than this...
1129
for path, entry in entries:
1130
other.add(entry.copy())
1134
"""Iterate over all file-ids."""
1135
return iter(self._byid)
1137
def iter_just_entries(self):
1138
"""Iterate over all entries.
1140
Unlike iter_entries(), just the entries are returned (not (path, ie))
1141
and the order of entries is undefined.
1084
def __contains__(self, file_id):
1085
"""True if this entry contains a file with given id.
1143
XXX: We may not want to merge this into bzr.dev.
1087
>>> inv = Inventory()
1088
>>> inv.add(InventoryFile('123', 'foo.c', ROOT_ID))
1089
InventoryFile('123', 'foo.c', parent_id='TREE_ROOT', sha1=None, len=None)
1145
if self.root is None:
1147
for _, ie in self._byid.iteritems():
1151
"""Returns number of entries."""
1152
return len(self._byid)
1095
file_id = osutils.safe_file_id(file_id)
1096
return (file_id in self._byid)
1154
1098
def __getitem__(self, file_id):
1155
1099
"""Return the entry for given file_id.
1157
1101
>>> inv = Inventory()
1158
1102
>>> inv.add(InventoryFile('123123', 'hello.c', ROOT_ID))
1159
InventoryFile('123123', 'hello.c', parent_id='TREE_ROOT', sha1=None, len=None, revision=None)
1103
InventoryFile('123123', 'hello.c', parent_id='TREE_ROOT', sha1=None, len=None)
1160
1104
>>> inv['123123'].name
1107
file_id = osutils.safe_file_id(file_id)
1164
1109
return self._byid[file_id]
1165
1110
except KeyError:
1368
1362
del old_parent.children[file_ie.name]
1369
1363
new_parent.children[new_name] = file_ie
1371
1365
file_ie.name = new_name
1372
1366
file_ie.parent_id = new_parent_id
1374
1368
def is_root(self, file_id):
1369
file_id = osutils.safe_file_id(file_id)
1375
1370
return self.root is not None and file_id == self.root.file_id
1378
class CHKInventory(CommonInventory):
1379
"""An inventory persisted in a CHK store.
1381
By design, a CHKInventory is immutable so many of the methods
1382
supported by Inventory - add, rename, apply_delta, etc - are *not*
1383
supported. To create a new CHKInventory, use create_by_apply_delta()
1384
or from_inventory(), say.
1386
Internally, a CHKInventory has one or two CHKMaps:
1388
* id_to_entry - a map from (file_id,) => InventoryEntry as bytes
1389
* parent_id_basename_to_file_id - a map from (parent_id, basename_utf8)
1392
The second map is optional and not present in early CHkRepository's.
1394
No caching is performed: every method call or item access will perform
1395
requests to the storage layer. As such, keep references to objects you
1399
def __init__(self, search_key_name):
1400
CommonInventory.__init__(self)
1401
self._fileid_to_entry_cache = {}
1402
self._fully_cached = False
1403
self._path_to_fileid_cache = {}
1404
self._search_key_name = search_key_name
1407
def __eq__(self, other):
1408
"""Compare two sets by comparing their contents."""
1409
if not isinstance(other, CHKInventory):
1410
return NotImplemented
1412
this_key = self.id_to_entry.key()
1413
other_key = other.id_to_entry.key()
1414
this_pid_key = self.parent_id_basename_to_file_id.key()
1415
other_pid_key = other.parent_id_basename_to_file_id.key()
1416
if None in (this_key, this_pid_key, other_key, other_pid_key):
1418
return this_key == other_key and this_pid_key == other_pid_key
1420
def _entry_to_bytes(self, entry):
1421
"""Serialise entry as a single bytestring.
1423
:param Entry: An inventory entry.
1424
:return: A bytestring for the entry.
1427
ENTRY ::= FILE | DIR | SYMLINK | TREE
1428
FILE ::= "file: " COMMON SEP SHA SEP SIZE SEP EXECUTABLE
1429
DIR ::= "dir: " COMMON
1430
SYMLINK ::= "symlink: " COMMON SEP TARGET_UTF8
1431
TREE ::= "tree: " COMMON REFERENCE_REVISION
1432
COMMON ::= FILE_ID SEP PARENT_ID SEP NAME_UTF8 SEP REVISION
1435
if entry.parent_id is not None:
1436
parent_str = entry.parent_id
1439
name_str = entry.name.encode("utf8")
1440
if entry.kind == 'file':
1441
if entry.executable:
1445
return "file: %s\n%s\n%s\n%s\n%s\n%d\n%s" % (
1446
entry.file_id, parent_str, name_str, entry.revision,
1447
entry.text_sha1, entry.text_size, exec_str)
1448
elif entry.kind == 'directory':
1449
return "dir: %s\n%s\n%s\n%s" % (
1450
entry.file_id, parent_str, name_str, entry.revision)
1451
elif entry.kind == 'symlink':
1452
return "symlink: %s\n%s\n%s\n%s\n%s" % (
1453
entry.file_id, parent_str, name_str, entry.revision,
1454
entry.symlink_target.encode("utf8"))
1455
elif entry.kind == 'tree-reference':
1456
return "tree: %s\n%s\n%s\n%s\n%s" % (
1457
entry.file_id, parent_str, name_str, entry.revision,
1458
entry.reference_revision)
1460
raise ValueError("unknown kind %r" % entry.kind)
1462
def _expand_fileids_to_parents_and_children(self, file_ids):
1463
"""Give a more wholistic view starting with the given file_ids.
1465
For any file_id which maps to a directory, we will include all children
1466
of that directory. We will also include all directories which are
1467
parents of the given file_ids, but we will not include their children.
1474
fringle # fringle-id
1478
if given [foo-id] we will include
1479
TREE_ROOT as interesting parents
1481
foo-id, baz-id, frob-id, fringle-id
1485
# TODO: Pre-pass over the list of fileids to see if anything is already
1486
# deserialized in self._fileid_to_entry_cache
1488
directories_to_expand = set()
1489
children_of_parent_id = {}
1490
# It is okay if some of the fileids are missing
1491
for entry in self._getitems(file_ids):
1492
if entry.kind == 'directory':
1493
directories_to_expand.add(entry.file_id)
1494
interesting.add(entry.parent_id)
1495
children_of_parent_id.setdefault(entry.parent_id, set()
1496
).add(entry.file_id)
1498
# Now, interesting has all of the direct parents, but not the
1499
# parents of those parents. It also may have some duplicates with
1501
remaining_parents = interesting.difference(file_ids)
1502
# When we hit the TREE_ROOT, we'll get an interesting parent of None,
1503
# but we don't actually want to recurse into that
1504
interesting.add(None) # this will auto-filter it in the loop
1505
remaining_parents.discard(None)
1506
while remaining_parents:
1507
next_parents = set()
1508
for entry in self._getitems(remaining_parents):
1509
next_parents.add(entry.parent_id)
1510
children_of_parent_id.setdefault(entry.parent_id, set()
1511
).add(entry.file_id)
1512
# Remove any search tips we've already processed
1513
remaining_parents = next_parents.difference(interesting)
1514
interesting.update(remaining_parents)
1515
# We should probably also .difference(directories_to_expand)
1516
interesting.update(file_ids)
1517
interesting.discard(None)
1518
while directories_to_expand:
1519
# Expand directories by looking in the
1520
# parent_id_basename_to_file_id map
1521
keys = [StaticTuple(f,).intern() for f in directories_to_expand]
1522
directories_to_expand = set()
1523
items = self.parent_id_basename_to_file_id.iteritems(keys)
1524
next_file_ids = set([item[1] for item in items])
1525
next_file_ids = next_file_ids.difference(interesting)
1526
interesting.update(next_file_ids)
1527
for entry in self._getitems(next_file_ids):
1528
if entry.kind == 'directory':
1529
directories_to_expand.add(entry.file_id)
1530
children_of_parent_id.setdefault(entry.parent_id, set()
1531
).add(entry.file_id)
1532
return interesting, children_of_parent_id
1534
def filter(self, specific_fileids):
1535
"""Get an inventory view filtered against a set of file-ids.
1537
Children of directories and parents are included.
1539
The result may or may not reference the underlying inventory
1540
so it should be treated as immutable.
1543
parent_to_children) = self._expand_fileids_to_parents_and_children(
1545
# There is some overlap here, but we assume that all interesting items
1546
# are in the _fileid_to_entry_cache because we had to read them to
1547
# determine if they were a dir we wanted to recurse, or just a file
1548
# This should give us all the entries we'll want to add, so start
1550
other = Inventory(self.root_id)
1551
other.root.revision = self.root.revision
1552
other.revision_id = self.revision_id
1553
if not interesting or not parent_to_children:
1554
# empty filter, or filtering entrys that don't exist
1555
# (if even 1 existed, then we would have populated
1556
# parent_to_children with at least the tree root.)
1558
cache = self._fileid_to_entry_cache
1559
remaining_children = collections.deque(parent_to_children[self.root_id])
1560
while remaining_children:
1561
file_id = remaining_children.popleft()
1563
if ie.kind == 'directory':
1564
ie = ie.copy() # We create a copy to depopulate the .children attribute
1565
# TODO: depending on the uses of 'other' we should probably alwyas
1566
# '.copy()' to prevent someone from mutating other and
1567
# invaliding our internal cache
1569
if file_id in parent_to_children:
1570
remaining_children.extend(parent_to_children[file_id])
1574
def _bytes_to_utf8name_key(bytes):
1575
"""Get the file_id, revision_id key out of bytes."""
1576
# We don't normally care about name, except for times when we want
1577
# to filter out empty names because of non rich-root...
1578
sections = bytes.split('\n')
1579
kind, file_id = sections[0].split(': ')
1580
return (sections[2], intern(file_id), intern(sections[3]))
1582
def _bytes_to_entry(self, bytes):
1583
"""Deserialise a serialised entry."""
1584
sections = bytes.split('\n')
1585
if sections[0].startswith("file: "):
1586
result = InventoryFile(sections[0][6:],
1587
sections[2].decode('utf8'),
1589
result.text_sha1 = sections[4]
1590
result.text_size = int(sections[5])
1591
result.executable = sections[6] == "Y"
1592
elif sections[0].startswith("dir: "):
1593
result = CHKInventoryDirectory(sections[0][5:],
1594
sections[2].decode('utf8'),
1596
elif sections[0].startswith("symlink: "):
1597
result = InventoryLink(sections[0][9:],
1598
sections[2].decode('utf8'),
1600
result.symlink_target = sections[4].decode('utf8')
1601
elif sections[0].startswith("tree: "):
1602
result = TreeReference(sections[0][6:],
1603
sections[2].decode('utf8'),
1605
result.reference_revision = sections[4]
1607
raise ValueError("Not a serialised entry %r" % bytes)
1608
result.file_id = intern(result.file_id)
1609
result.revision = intern(sections[3])
1610
if result.parent_id == '':
1611
result.parent_id = None
1612
self._fileid_to_entry_cache[result.file_id] = result
1615
def create_by_apply_delta(self, inventory_delta, new_revision_id,
1616
propagate_caches=False):
1617
"""Create a new CHKInventory by applying inventory_delta to this one.
1619
See the inventory developers documentation for the theory behind
1622
:param inventory_delta: The inventory delta to apply. See
1623
Inventory.apply_delta for details.
1624
:param new_revision_id: The revision id of the resulting CHKInventory.
1625
:param propagate_caches: If True, the caches for this inventory are
1626
copied to and updated for the result.
1627
:return: The new CHKInventory.
1629
split = osutils.split
1630
result = CHKInventory(self._search_key_name)
1631
if propagate_caches:
1632
# Just propagate the path-to-fileid cache for now
1633
result._path_to_fileid_cache = dict(self._path_to_fileid_cache.iteritems())
1634
search_key_func = chk_map.search_key_registry.get(self._search_key_name)
1635
self.id_to_entry._ensure_root()
1636
maximum_size = self.id_to_entry._root_node.maximum_size
1637
result.revision_id = new_revision_id
1638
result.id_to_entry = chk_map.CHKMap(
1639
self.id_to_entry._store,
1640
self.id_to_entry.key(),
1641
search_key_func=search_key_func)
1642
result.id_to_entry._ensure_root()
1643
result.id_to_entry._root_node.set_maximum_size(maximum_size)
1644
# Change to apply to the parent_id_basename delta. The dict maps
1645
# (parent_id, basename) -> (old_key, new_value). We use a dict because
1646
# when a path has its id replaced (e.g. the root is changed, or someone
1647
# does bzr mv a b, bzr mv c a, we should output a single change to this
1648
# map rather than two.
1649
parent_id_basename_delta = {}
1650
if self.parent_id_basename_to_file_id is not None:
1651
result.parent_id_basename_to_file_id = chk_map.CHKMap(
1652
self.parent_id_basename_to_file_id._store,
1653
self.parent_id_basename_to_file_id.key(),
1654
search_key_func=search_key_func)
1655
result.parent_id_basename_to_file_id._ensure_root()
1656
self.parent_id_basename_to_file_id._ensure_root()
1657
result_p_id_root = result.parent_id_basename_to_file_id._root_node
1658
p_id_root = self.parent_id_basename_to_file_id._root_node
1659
result_p_id_root.set_maximum_size(p_id_root.maximum_size)
1660
result_p_id_root._key_width = p_id_root._key_width
1662
result.parent_id_basename_to_file_id = None
1663
result.root_id = self.root_id
1664
id_to_entry_delta = []
1665
# inventory_delta is only traversed once, so we just update the
1667
# Check for repeated file ids
1668
inventory_delta = _check_delta_unique_ids(inventory_delta)
1669
# Repeated old paths
1670
inventory_delta = _check_delta_unique_old_paths(inventory_delta)
1671
# Check for repeated new paths
1672
inventory_delta = _check_delta_unique_new_paths(inventory_delta)
1673
# Check for entries that don't match the fileid
1674
inventory_delta = _check_delta_ids_match_entry(inventory_delta)
1675
# Check for nonsense fileids
1676
inventory_delta = _check_delta_ids_are_valid(inventory_delta)
1677
# Check for new_path <-> entry consistency
1678
inventory_delta = _check_delta_new_path_entry_both_or_None(
1680
# All changed entries need to have their parents be directories and be
1681
# at the right path. This set contains (path, id) tuples.
1683
# When we delete an item, all the children of it must be either deleted
1684
# or altered in their own right. As we batch process the change via
1685
# CHKMap.apply_delta, we build a set of things to use to validate the
1689
for old_path, new_path, file_id, entry in inventory_delta:
1692
result.root_id = file_id
1693
if new_path is None:
1698
if propagate_caches:
1700
del result._path_to_fileid_cache[old_path]
1703
deletes.add(file_id)
1705
new_key = StaticTuple(file_id,)
1706
new_value = result._entry_to_bytes(entry)
1707
# Update caches. It's worth doing this whether
1708
# we're propagating the old caches or not.
1709
result._path_to_fileid_cache[new_path] = file_id
1710
parents.add((split(new_path)[0], entry.parent_id))
1711
if old_path is None:
1714
old_key = StaticTuple(file_id,)
1715
if self.id2path(file_id) != old_path:
1716
raise errors.InconsistentDelta(old_path, file_id,
1717
"Entry was at wrong other path %r." %
1718
self.id2path(file_id))
1719
altered.add(file_id)
1720
id_to_entry_delta.append(StaticTuple(old_key, new_key, new_value))
1721
if result.parent_id_basename_to_file_id is not None:
1722
# parent_id, basename changes
1723
if old_path is None:
1726
old_entry = self[file_id]
1727
old_key = self._parent_id_basename_key(old_entry)
1728
if new_path is None:
1732
new_key = self._parent_id_basename_key(entry)
1734
# If the two keys are the same, the value will be unchanged
1735
# as its always the file id for this entry.
1736
if old_key != new_key:
1737
# Transform a change into explicit delete/add preserving
1738
# a possible match on the key from a different file id.
1739
if old_key is not None:
1740
parent_id_basename_delta.setdefault(
1741
old_key, [None, None])[0] = old_key
1742
if new_key is not None:
1743
parent_id_basename_delta.setdefault(
1744
new_key, [None, None])[1] = new_value
1745
# validate that deletes are complete.
1746
for file_id in deletes:
1747
entry = self[file_id]
1748
if entry.kind != 'directory':
1750
# This loop could potentially be better by using the id_basename
1751
# map to just get the child file ids.
1752
for child in entry.children.values():
1753
if child.file_id not in altered:
1754
raise errors.InconsistentDelta(self.id2path(child.file_id),
1755
child.file_id, "Child not deleted or reparented when "
1757
result.id_to_entry.apply_delta(id_to_entry_delta)
1758
if parent_id_basename_delta:
1759
# Transform the parent_id_basename delta data into a linear delta
1760
# with only one record for a given key. Optimally this would allow
1761
# re-keying, but its simpler to just output that as a delete+add
1762
# to spend less time calculating the delta.
1764
for key, (old_key, value) in parent_id_basename_delta.iteritems():
1765
if value is not None:
1766
delta_list.append((old_key, key, value))
1768
delta_list.append((old_key, None, None))
1769
result.parent_id_basename_to_file_id.apply_delta(delta_list)
1770
parents.discard(('', None))
1771
for parent_path, parent in parents:
1773
if result[parent].kind != 'directory':
1774
raise errors.InconsistentDelta(result.id2path(parent), parent,
1775
'Not a directory, but given children')
1776
except errors.NoSuchId:
1777
raise errors.InconsistentDelta("<unknown>", parent,
1778
"Parent is not present in resulting inventory.")
1779
if result.path2id(parent_path) != parent:
1780
raise errors.InconsistentDelta(parent_path, parent,
1781
"Parent has wrong path %r." % result.path2id(parent_path))
1785
def deserialise(klass, chk_store, bytes, expected_revision_id):
1786
"""Deserialise a CHKInventory.
1788
:param chk_store: A CHK capable VersionedFiles instance.
1789
:param bytes: The serialised bytes.
1790
:param expected_revision_id: The revision ID we think this inventory is
1792
:return: A CHKInventory
1794
lines = bytes.split('\n')
1796
raise AssertionError('bytes to deserialize must end with an eol')
1798
if lines[0] != 'chkinventory:':
1799
raise ValueError("not a serialised CHKInventory: %r" % bytes)
1801
allowed_keys = frozenset(['root_id', 'revision_id', 'search_key_name',
1802
'parent_id_basename_to_file_id',
1804
for line in lines[1:]:
1805
key, value = line.split(': ', 1)
1806
if key not in allowed_keys:
1807
raise errors.BzrError('Unknown key in inventory: %r\n%r'
1810
raise errors.BzrError('Duplicate key in inventory: %r\n%r'
1813
revision_id = intern(info['revision_id'])
1814
root_id = intern(info['root_id'])
1815
search_key_name = intern(info.get('search_key_name', 'plain'))
1816
parent_id_basename_to_file_id = intern(info.get(
1817
'parent_id_basename_to_file_id', None))
1818
if not parent_id_basename_to_file_id.startswith('sha1:'):
1819
raise ValueError('parent_id_basename_to_file_id should be a sha1'
1820
' key not %r' % (parent_id_basename_to_file_id,))
1821
id_to_entry = info['id_to_entry']
1822
if not id_to_entry.startswith('sha1:'):
1823
raise ValueError('id_to_entry should be a sha1'
1824
' key not %r' % (id_to_entry,))
1826
result = CHKInventory(search_key_name)
1827
result.revision_id = revision_id
1828
result.root_id = root_id
1829
search_key_func = chk_map.search_key_registry.get(
1830
result._search_key_name)
1831
if parent_id_basename_to_file_id is not None:
1832
result.parent_id_basename_to_file_id = chk_map.CHKMap(
1833
chk_store, StaticTuple(parent_id_basename_to_file_id,),
1834
search_key_func=search_key_func)
1836
result.parent_id_basename_to_file_id = None
1838
result.id_to_entry = chk_map.CHKMap(chk_store,
1839
StaticTuple(id_to_entry,),
1840
search_key_func=search_key_func)
1841
if (result.revision_id,) != expected_revision_id:
1842
raise ValueError("Mismatched revision id and expected: %r, %r" %
1843
(result.revision_id, expected_revision_id))
1847
def from_inventory(klass, chk_store, inventory, maximum_size=0, search_key_name='plain'):
1848
"""Create a CHKInventory from an existing inventory.
1850
The content of inventory is copied into the chk_store, and a
1851
CHKInventory referencing that is returned.
1853
:param chk_store: A CHK capable VersionedFiles instance.
1854
:param inventory: The inventory to copy.
1855
:param maximum_size: The CHKMap node size limit.
1856
:param search_key_name: The identifier for the search key function
1858
result = klass(search_key_name)
1859
result.revision_id = inventory.revision_id
1860
result.root_id = inventory.root.file_id
1862
entry_to_bytes = result._entry_to_bytes
1863
parent_id_basename_key = result._parent_id_basename_key
1864
id_to_entry_dict = {}
1865
parent_id_basename_dict = {}
1866
for path, entry in inventory.iter_entries():
1867
key = StaticTuple(entry.file_id,).intern()
1868
id_to_entry_dict[key] = entry_to_bytes(entry)
1869
p_id_key = parent_id_basename_key(entry)
1870
parent_id_basename_dict[p_id_key] = entry.file_id
1872
result._populate_from_dicts(chk_store, id_to_entry_dict,
1873
parent_id_basename_dict, maximum_size=maximum_size)
1876
def _populate_from_dicts(self, chk_store, id_to_entry_dict,
1877
parent_id_basename_dict, maximum_size):
1878
search_key_func = chk_map.search_key_registry.get(self._search_key_name)
1879
root_key = chk_map.CHKMap.from_dict(chk_store, id_to_entry_dict,
1880
maximum_size=maximum_size, key_width=1,
1881
search_key_func=search_key_func)
1882
self.id_to_entry = chk_map.CHKMap(chk_store, root_key,
1884
root_key = chk_map.CHKMap.from_dict(chk_store,
1885
parent_id_basename_dict,
1886
maximum_size=maximum_size, key_width=2,
1887
search_key_func=search_key_func)
1888
self.parent_id_basename_to_file_id = chk_map.CHKMap(chk_store,
1889
root_key, search_key_func)
1891
def _parent_id_basename_key(self, entry):
1892
"""Create a key for a entry in a parent_id_basename_to_file_id index."""
1893
if entry.parent_id is not None:
1894
parent_id = entry.parent_id
1897
return StaticTuple(parent_id, entry.name.encode('utf8')).intern()
1899
def __getitem__(self, file_id):
1900
"""map a single file_id -> InventoryEntry."""
1902
raise errors.NoSuchId(self, file_id)
1903
result = self._fileid_to_entry_cache.get(file_id, None)
1904
if result is not None:
1907
return self._bytes_to_entry(
1908
self.id_to_entry.iteritems([StaticTuple(file_id,)]).next()[1])
1909
except StopIteration:
1910
# really we're passing an inventory, not a tree...
1911
raise errors.NoSuchId(self, file_id)
1913
def _getitems(self, file_ids):
1914
"""Similar to __getitem__, but lets you query for multiple.
1916
The returned order is undefined. And currently if an item doesn't
1917
exist, it isn't included in the output.
1921
for file_id in file_ids:
1922
entry = self._fileid_to_entry_cache.get(file_id, None)
1924
remaining.append(file_id)
1926
result.append(entry)
1927
file_keys = [StaticTuple(f,).intern() for f in remaining]
1928
for file_key, value in self.id_to_entry.iteritems(file_keys):
1929
entry = self._bytes_to_entry(value)
1930
result.append(entry)
1931
self._fileid_to_entry_cache[entry.file_id] = entry
1934
def has_id(self, file_id):
1935
# Perhaps have an explicit 'contains' method on CHKMap ?
1936
if self._fileid_to_entry_cache.get(file_id, None) is not None:
1939
self.id_to_entry.iteritems([StaticTuple(file_id,)]))) == 1
1941
def is_root(self, file_id):
1942
return file_id == self.root_id
1944
def _iter_file_id_parents(self, file_id):
1945
"""Yield the parents of file_id up to the root."""
1946
while file_id is not None:
1950
raise errors.NoSuchId(tree=self, file_id=file_id)
1952
file_id = ie.parent_id
1955
"""Iterate over all file-ids."""
1956
for key, _ in self.id_to_entry.iteritems():
1959
def iter_just_entries(self):
1960
"""Iterate over all entries.
1962
Unlike iter_entries(), just the entries are returned (not (path, ie))
1963
and the order of entries is undefined.
1965
XXX: We may not want to merge this into bzr.dev.
1967
for key, entry in self.id_to_entry.iteritems():
1969
ie = self._fileid_to_entry_cache.get(file_id, None)
1971
ie = self._bytes_to_entry(entry)
1972
self._fileid_to_entry_cache[file_id] = ie
1975
def _preload_cache(self):
1976
"""Make sure all file-ids are in _fileid_to_entry_cache"""
1977
if self._fully_cached:
1978
return # No need to do it again
1979
# The optimal sort order is to use iteritems() directly
1980
cache = self._fileid_to_entry_cache
1981
for key, entry in self.id_to_entry.iteritems():
1983
if file_id not in cache:
1984
ie = self._bytes_to_entry(entry)
1988
last_parent_id = last_parent_ie = None
1989
pid_items = self.parent_id_basename_to_file_id.iteritems()
1990
for key, child_file_id in pid_items:
1991
if key == ('', ''): # This is the root
1992
if child_file_id != self.root_id:
1993
raise ValueError('Data inconsistency detected.'
1994
' We expected data with key ("","") to match'
1995
' the root id, but %s != %s'
1996
% (child_file_id, self.root_id))
1998
parent_id, basename = key
1999
ie = cache[child_file_id]
2000
if parent_id == last_parent_id:
2001
parent_ie = last_parent_ie
2003
parent_ie = cache[parent_id]
2004
if parent_ie.kind != 'directory':
2005
raise ValueError('Data inconsistency detected.'
2006
' An entry in the parent_id_basename_to_file_id map'
2007
' has parent_id {%s} but the kind of that object'
2008
' is %r not "directory"' % (parent_id, parent_ie.kind))
2009
if parent_ie._children is None:
2010
parent_ie._children = {}
2011
basename = basename.decode('utf-8')
2012
if basename in parent_ie._children:
2013
existing_ie = parent_ie._children[basename]
2014
if existing_ie != ie:
2015
raise ValueError('Data inconsistency detected.'
2016
' Two entries with basename %r were found'
2017
' in the parent entry {%s}'
2018
% (basename, parent_id))
2019
if basename != ie.name:
2020
raise ValueError('Data inconsistency detected.'
2021
' In the parent_id_basename_to_file_id map, file_id'
2022
' {%s} is listed as having basename %r, but in the'
2023
' id_to_entry map it is %r'
2024
% (child_file_id, basename, ie.name))
2025
parent_ie._children[basename] = ie
2026
self._fully_cached = True
2028
def iter_changes(self, basis):
2029
"""Generate a Tree.iter_changes change list between this and basis.
2031
:param basis: Another CHKInventory.
2032
:return: An iterator over the changes between self and basis, as per
2033
tree.iter_changes().
2035
# We want: (file_id, (path_in_source, path_in_target),
2036
# changed_content, versioned, parent, name, kind,
2038
for key, basis_value, self_value in \
2039
self.id_to_entry.iter_changes(basis.id_to_entry):
2041
if basis_value is not None:
2042
basis_entry = basis._bytes_to_entry(basis_value)
2043
path_in_source = basis.id2path(file_id)
2044
basis_parent = basis_entry.parent_id
2045
basis_name = basis_entry.name
2046
basis_executable = basis_entry.executable
2048
path_in_source = None
2051
basis_executable = None
2052
if self_value is not None:
2053
self_entry = self._bytes_to_entry(self_value)
2054
path_in_target = self.id2path(file_id)
2055
self_parent = self_entry.parent_id
2056
self_name = self_entry.name
2057
self_executable = self_entry.executable
2059
path_in_target = None
2062
self_executable = None
2063
if basis_value is None:
2065
kind = (None, self_entry.kind)
2066
versioned = (False, True)
2067
elif self_value is None:
2069
kind = (basis_entry.kind, None)
2070
versioned = (True, False)
2072
kind = (basis_entry.kind, self_entry.kind)
2073
versioned = (True, True)
2074
changed_content = False
2075
if kind[0] != kind[1]:
2076
changed_content = True
2077
elif kind[0] == 'file':
2078
if (self_entry.text_size != basis_entry.text_size or
2079
self_entry.text_sha1 != basis_entry.text_sha1):
2080
changed_content = True
2081
elif kind[0] == 'symlink':
2082
if self_entry.symlink_target != basis_entry.symlink_target:
2083
changed_content = True
2084
elif kind[0] == 'tree-reference':
2085
if (self_entry.reference_revision !=
2086
basis_entry.reference_revision):
2087
changed_content = True
2088
parent = (basis_parent, self_parent)
2089
name = (basis_name, self_name)
2090
executable = (basis_executable, self_executable)
2091
if (not changed_content
2092
and parent[0] == parent[1]
2093
and name[0] == name[1]
2094
and executable[0] == executable[1]):
2095
# Could happen when only the revision changed for a directory
2098
yield (file_id, (path_in_source, path_in_target), changed_content,
2099
versioned, parent, name, kind, executable)
2102
"""Return the number of entries in the inventory."""
2103
return len(self.id_to_entry)
2105
def _make_delta(self, old):
2106
"""Make an inventory delta from two inventories."""
2107
if type(old) != CHKInventory:
2108
return CommonInventory._make_delta(self, old)
2110
for key, old_value, self_value in \
2111
self.id_to_entry.iter_changes(old.id_to_entry):
2113
if old_value is not None:
2114
old_path = old.id2path(file_id)
2117
if self_value is not None:
2118
entry = self._bytes_to_entry(self_value)
2119
self._fileid_to_entry_cache[file_id] = entry
2120
new_path = self.id2path(file_id)
2124
delta.append((old_path, new_path, file_id, entry))
2127
def path2id(self, relpath):
2128
"""See CommonInventory.path2id()."""
2129
# TODO: perhaps support negative hits?
2130
result = self._path_to_fileid_cache.get(relpath, None)
2131
if result is not None:
2133
if isinstance(relpath, basestring):
2134
names = osutils.splitpath(relpath)
2137
current_id = self.root_id
2138
if current_id is None:
2140
parent_id_index = self.parent_id_basename_to_file_id
2142
for basename in names:
2143
if cur_path is None:
2146
cur_path = cur_path + '/' + basename
2147
basename_utf8 = basename.encode('utf8')
2148
file_id = self._path_to_fileid_cache.get(cur_path, None)
2150
key_filter = [StaticTuple(current_id, basename_utf8)]
2151
items = parent_id_index.iteritems(key_filter)
2152
for (parent_id, name_utf8), file_id in items:
2153
if parent_id != current_id or name_utf8 != basename_utf8:
2154
raise errors.BzrError("corrupt inventory lookup! "
2155
"%r %r %r %r" % (parent_id, current_id, name_utf8,
2160
self._path_to_fileid_cache[cur_path] = file_id
2161
current_id = file_id
2165
"""Serialise the inventory to lines."""
2166
lines = ["chkinventory:\n"]
2167
if self._search_key_name != 'plain':
2168
# custom ordering grouping things that don't change together
2169
lines.append('search_key_name: %s\n' % (self._search_key_name,))
2170
lines.append("root_id: %s\n" % self.root_id)
2171
lines.append('parent_id_basename_to_file_id: %s\n' %
2172
(self.parent_id_basename_to_file_id.key()[0],))
2173
lines.append("revision_id: %s\n" % self.revision_id)
2174
lines.append("id_to_entry: %s\n" % (self.id_to_entry.key()[0],))
2176
lines.append("revision_id: %s\n" % self.revision_id)
2177
lines.append("root_id: %s\n" % self.root_id)
2178
if self.parent_id_basename_to_file_id is not None:
2179
lines.append('parent_id_basename_to_file_id: %s\n' %
2180
(self.parent_id_basename_to_file_id.key()[0],))
2181
lines.append("id_to_entry: %s\n" % (self.id_to_entry.key()[0],))
2186
"""Get the root entry."""
2187
return self[self.root_id]
2190
class CHKInventoryDirectory(InventoryDirectory):
2191
"""A directory in an inventory."""
2193
__slots__ = ['_children', '_chk_inventory']
2195
def __init__(self, file_id, name, parent_id, chk_inventory):
2196
# Don't call InventoryDirectory.__init__ - it isn't right for this
2198
InventoryEntry.__init__(self, file_id, name, parent_id)
2199
self._children = None
2200
self._chk_inventory = chk_inventory
2204
"""Access the list of children of this directory.
2206
With a parent_id_basename_to_file_id index, loads all the children,
2207
without loads the entire index. Without is bad. A more sophisticated
2208
proxy object might be nice, to allow partial loading of children as
2209
well when specific names are accessed. (So path traversal can be
2210
written in the obvious way but not examine siblings.).
2212
if self._children is not None:
2213
return self._children
2214
# No longer supported
2215
if self._chk_inventory.parent_id_basename_to_file_id is None:
2216
raise AssertionError("Inventories without"
2217
" parent_id_basename_to_file_id are no longer supported")
2219
# XXX: Todo - use proxy objects for the children rather than loading
2220
# all when the attribute is referenced.
2221
parent_id_index = self._chk_inventory.parent_id_basename_to_file_id
2223
for (parent_id, name_utf8), file_id in parent_id_index.iteritems(
2224
key_filter=[StaticTuple(self.file_id,)]):
2225
child_keys.add(StaticTuple(file_id,))
2227
for file_id_key in child_keys:
2228
entry = self._chk_inventory._fileid_to_entry_cache.get(
2229
file_id_key[0], None)
2230
if entry is not None:
2231
result[entry.name] = entry
2232
cached.add(file_id_key)
2233
child_keys.difference_update(cached)
2234
# populate; todo: do by name
2235
id_to_entry = self._chk_inventory.id_to_entry
2236
for file_id_key, bytes in id_to_entry.iteritems(child_keys):
2237
entry = self._chk_inventory._bytes_to_entry(bytes)
2238
result[entry.name] = entry
2239
self._chk_inventory._fileid_to_entry_cache[file_id_key[0]] = entry
2240
self._children = result
2243
1373
entry_factory = {
2244
1374
'directory': InventoryDirectory,
2245
1375
'file': InventoryFile,
added
removed
bzrlib/inventory.py
