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# Copyright (C) 2005, 2006, 2007 Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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# FIXME: This refactoring of the workingtree code doesn't seem to keep
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# the WorkingTree's copy of the inventory in sync with the branch. The
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# branch modifies its working inventory when it does a commit to make
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# missing files permanently removed.
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# TODO: Maybe also keep the full path of the entry, and the children?
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# But those depend on its position within a particular inventory, and
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# it would be nice not to need to hold the backpointer here.
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# This should really be an id randomly assigned when the tree is
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# created, but it's not for now.
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from bzrlib.lazy_import import lazy_import
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lazy_import(globals(), """
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from bzrlib.errors import (
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from bzrlib.symbol_versioning import deprecated_method, zero_ninetyone
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from bzrlib.trace import mutter
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class InventoryEntry(object):
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"""Description of a versioned file.
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An InventoryEntry has the following fields, which are also
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present in the XML inventory-entry element:
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(within the parent directory)
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file_id of the parent directory, or ROOT_ID
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the revision_id in which this variation of this file was
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Indicates that this file should be executable on systems
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sha-1 of the text of the file
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size in bytes of the text of the file
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(reading a version 4 tree created a text_id field.)
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>>> i.add(InventoryDirectory('123', 'src', ROOT_ID))
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InventoryDirectory('123', 'src', parent_id='TREE_ROOT', revision=None)
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>>> i.add(InventoryFile('2323', 'hello.c', parent_id='123'))
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InventoryFile('2323', 'hello.c', parent_id='123', sha1=None, len=None)
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>>> shouldbe = {0: '', 1: 'src', 2: 'src/hello.c'}
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>>> for ix, j in enumerate(i.iter_entries()):
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... print (j[0] == shouldbe[ix], j[1])
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(True, InventoryDirectory('TREE_ROOT', u'', parent_id=None, revision=None))
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(True, InventoryDirectory('123', 'src', parent_id='TREE_ROOT', revision=None))
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(True, InventoryFile('2323', 'hello.c', parent_id='123', sha1=None, len=None))
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>>> i.add(InventoryFile('2324', 'bye.c', '123'))
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InventoryFile('2324', 'bye.c', parent_id='123', sha1=None, len=None)
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>>> i.add(InventoryDirectory('2325', 'wibble', '123'))
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InventoryDirectory('2325', 'wibble', parent_id='123', revision=None)
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>>> i.path2id('src/wibble')
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>>> i.add(InventoryFile('2326', 'wibble.c', '2325'))
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InventoryFile('2326', 'wibble.c', parent_id='2325', sha1=None, len=None)
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InventoryFile('2326', 'wibble.c', parent_id='2325', sha1=None, len=None)
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>>> for path, entry in i.iter_entries():
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... assert i.path2id(path)
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>>> i.id2path('2326')
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'src/wibble/wibble.c'
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# Constants returned by describe_change()
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# TODO: These should probably move to some kind of FileChangeDescription
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# class; that's like what's inside a TreeDelta but we want to be able to
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# generate them just for one file at a time.
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MODIFIED_AND_RENAMED = 'modified and renamed'
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def detect_changes(self, old_entry):
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"""Return a (text_modified, meta_modified) from this to old_entry.
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_read_tree_state must have been called on self and old_entry prior to
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calling detect_changes.
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def diff(self, text_diff, from_label, tree, to_label, to_entry, to_tree,
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output_to, reverse=False):
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"""Perform a diff from this to to_entry.
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text_diff will be used for textual difference calculation.
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This is a template method, override _diff in child classes.
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self._read_tree_state(tree.id2path(self.file_id), tree)
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# cannot diff from one kind to another - you must do a removal
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# and an addif they do not match.
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assert self.kind == to_entry.kind
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to_entry._read_tree_state(to_tree.id2path(to_entry.file_id),
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self._diff(text_diff, from_label, tree, to_label, to_entry, to_tree,
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def _diff(self, text_diff, from_label, tree, to_label, to_entry, to_tree,
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output_to, reverse=False):
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"""Perform a diff between two entries of the same kind."""
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def parent_candidates(self, previous_inventories):
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"""Find possible per-file graph parents.
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This is currently defined by:
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- Select the last changed revision in the parent inventory.
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- Do deal with a short lived bug in bzr 0.8's development two entries
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that have the same last changed but different 'x' bit settings are
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# revision:ie mapping for each ie found in previous_inventories.
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# identify candidate head revision ids.
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for inv in previous_inventories:
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if self.file_id in inv:
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ie = inv[self.file_id]
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assert ie.file_id == self.file_id
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if ie.revision in candidates:
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# same revision value in two different inventories:
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# correct possible inconsistencies:
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# * there was a bug in revision updates with 'x' bit
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if candidates[ie.revision].executable != ie.executable:
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candidates[ie.revision].executable = False
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ie.executable = False
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except AttributeError:
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# must now be the same.
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assert candidates[ie.revision] == ie
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# add this revision as a candidate.
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candidates[ie.revision] = ie
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@deprecated_method(zero_ninetyone)
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def find_previous_heads(self, previous_inventories,
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versioned_file_store,
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"""Return the revisions and entries that directly precede this.
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Returned as a map from revision to inventory entry.
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This is a map containing the file revisions in all parents
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for which the file exists, and its revision is not a parent of
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any other. If the file is new, the set will be empty.
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:param versioned_file_store: A store where ancestry data on this
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file id can be queried.
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:param transaction: The transaction that queries to the versioned
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file store should be completed under.
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:param entry_vf: The entry versioned file, if its already available.
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candidates = self.parent_candidates(previous_inventories)
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# revision:ie mapping with one revision for each head.
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# common case optimisation
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if len(candidates) == 1:
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# if there is only one candidate revision found
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# then we can avoid opening the versioned file to access ancestry:
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# there cannot be any ancestors to eliminate when there is
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# only one revision available.
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# --- what follows is now encapsulated in repository.get_graph.heads(),
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# but that is not accessible from here as we have no repository
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# pointer. Note that the repository.get_graph.heads() call can return
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# different results *at the moment* because of the kind-changing check
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# we have in parent_candidates().
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# eliminate ancestors amongst the available candidates:
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# heads are those that are not an ancestor of any other candidate
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# - this provides convergence at a per-file level.
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def get_ancestors(weave, entry):
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return set(weave.get_ancestry(entry.revision, topo_sorted=False))
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# revision: ancestor list for each head
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for ie in candidates.values():
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# may be an ancestor of a known head:
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already_present = 0 != len(
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[head for head in heads
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if ie.revision in head_ancestors[head]])
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# an ancestor of an analyzed candidate.
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# not an ancestor of a known head:
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# load the versioned file for this file id if needed
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entry_vf = versioned_file_store.get_weave_or_empty(
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self.file_id, transaction)
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ancestors = get_ancestors(entry_vf, ie)
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# may knock something else out:
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check_heads = list(heads.keys())
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for head in check_heads:
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if head in ancestors:
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# this previously discovered 'head' is not
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# really a head - its an ancestor of the newly
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head_ancestors[ie.revision] = ancestors
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heads[ie.revision] = ie
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def get_tar_item(self, root, dp, now, tree):
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"""Get a tarfile item and a file stream for its content."""
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item = tarfile.TarInfo(osutils.pathjoin(root, dp).encode('utf8'))
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# TODO: would be cool to actually set it to the timestamp of the
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# revision it was last changed
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fileobj = self._put_in_tar(item, tree)
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"""Return true if the object this entry represents has textual data.
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Note that textual data includes binary content.
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Also note that all entries get weave files created for them.
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This attribute is primarily used when upgrading from old trees that
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did not have the weave index for all inventory entries.
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def __init__(self, file_id, name, parent_id, text_id=None):
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"""Create an InventoryEntry
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The filename must be a single component, relative to the
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parent directory; it cannot be a whole path or relative name.
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>>> e = InventoryFile('123', 'hello.c', ROOT_ID)
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>>> e = InventoryFile('123', 'src/hello.c', ROOT_ID)
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Traceback (most recent call last):
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InvalidEntryName: Invalid entry name: src/hello.c
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assert isinstance(name, basestring), name
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if '/' in name or '\\' in name:
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raise errors.InvalidEntryName(name=name)
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self.executable = False
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self.text_sha1 = None
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self.text_size = None
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self.file_id = file_id
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assert isinstance(file_id, (str, None.__class__)), \
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'bad type %r for %r' % (type(file_id), file_id)
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self.text_id = text_id
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self.parent_id = parent_id
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self.symlink_target = None
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self.reference_revision = None
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def kind_character(self):
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"""Return a short kind indicator useful for appending to names."""
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raise BzrError('unknown kind %r' % self.kind)
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known_kinds = ('file', 'directory', 'symlink')
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def _put_in_tar(self, item, tree):
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"""populate item for stashing in a tar, and return the content stream.
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If no content is available, return None.
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raise BzrError("don't know how to export {%s} of kind %r" %
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(self.file_id, self.kind))
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def put_on_disk(self, dest, dp, tree):
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"""Create a representation of self on disk in the prefix dest.
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This is a template method - implement _put_on_disk in subclasses.
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fullpath = osutils.pathjoin(dest, dp)
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self._put_on_disk(fullpath, tree)
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# mutter(" export {%s} kind %s to %s", self.file_id,
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# self.kind, fullpath)
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def _put_on_disk(self, fullpath, tree):
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"""Put this entry onto disk at fullpath, from tree tree."""
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raise BzrError("don't know how to export {%s} of kind %r" % (self.file_id, self.kind))
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def sorted_children(self):
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return sorted(self.children.items())
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def versionable_kind(kind):
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return (kind in ('file', 'directory', 'symlink', 'tree-reference'))
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def check(self, checker, rev_id, inv, tree):
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"""Check this inventory entry is intact.
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This is a template method, override _check for kind specific
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:param checker: Check object providing context for the checks;
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can be used to find out what parts of the repository have already
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:param rev_id: Revision id from which this InventoryEntry was loaded.
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Not necessarily the last-changed revision for this file.
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:param inv: Inventory from which the entry was loaded.
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:param tree: RevisionTree for this entry.
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if self.parent_id is not None:
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if not inv.has_id(self.parent_id):
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raise BzrCheckError('missing parent {%s} in inventory for revision {%s}'
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% (self.parent_id, rev_id))
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self._check(checker, rev_id, tree)
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def _check(self, checker, rev_id, tree):
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"""Check this inventory entry for kind specific errors."""
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raise BzrCheckError('unknown entry kind %r in revision {%s}' %
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"""Clone this inventory entry."""
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raise NotImplementedError
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def describe_change(old_entry, new_entry):
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"""Describe the change between old_entry and this.
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This smells of being an InterInventoryEntry situation, but as its
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the first one, we're making it a static method for now.
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An entry with a different parent, or different name is considered
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to be renamed. Reparenting is an internal detail.
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Note that renaming the parent does not trigger a rename for the
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# TODO: Perhaps return an object rather than just a string
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if old_entry is new_entry:
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# also the case of both being None
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elif old_entry is None:
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elif new_entry is None:
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if old_entry.kind != new_entry.kind:
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text_modified, meta_modified = new_entry.detect_changes(old_entry)
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if text_modified or meta_modified:
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# TODO 20060511 (mbp, rbc) factor out 'detect_rename' here.
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if old_entry.parent_id != new_entry.parent_id:
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elif old_entry.name != new_entry.name:
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if renamed and not modified:
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return InventoryEntry.RENAMED
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if modified and not renamed:
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if modified and renamed:
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return InventoryEntry.MODIFIED_AND_RENAMED
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return ("%s(%r, %r, parent_id=%r, revision=%r)"
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% (self.__class__.__name__,
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def snapshot(self, revision, path, previous_entries,
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work_tree, commit_builder):
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"""Make a snapshot of this entry which may or may not have changed.
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This means that all its fields are populated, that it has its
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text stored in the text store or weave.
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:return: True if anything was recorded
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# cannot be unchanged unless there is only one parent file rev.
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self._read_tree_state(path, work_tree)
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if len(previous_entries) == 1:
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parent_ie = previous_entries.values()[0]
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if self._unchanged(parent_ie):
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self.revision = parent_ie.revision
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self.revision = revision
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return self._snapshot_text(previous_entries, work_tree, commit_builder)
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def _snapshot_text(self, file_parents, work_tree, commit_builder):
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"""Record the 'text' of this entry, whatever form that takes.
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:return: True if anything was recorded
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raise NotImplementedError(self._snapshot_text)
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def __eq__(self, other):
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if not isinstance(other, InventoryEntry):
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return NotImplemented
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return ((self.file_id == other.file_id)
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and (self.name == other.name)
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and (other.symlink_target == self.symlink_target)
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and (self.text_sha1 == other.text_sha1)
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and (self.text_size == other.text_size)
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and (self.text_id == other.text_id)
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and (self.parent_id == other.parent_id)
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and (self.kind == other.kind)
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and (self.revision == other.revision)
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and (self.executable == other.executable)
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and (self.reference_revision == other.reference_revision)
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def __ne__(self, other):
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return not (self == other)
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raise ValueError('not hashable')
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def _unchanged(self, previous_ie):
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"""Has this entry changed relative to previous_ie.
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This method should be overridden in child classes.
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# different inv parent
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if previous_ie.parent_id != self.parent_id:
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elif previous_ie.name != self.name:
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elif previous_ie.kind != self.kind:
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def _read_tree_state(self, path, work_tree):
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"""Populate fields in the inventory entry from the given tree.
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Note that this should be modified to be a noop on virtual trees
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as all entries created there are prepopulated.
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# TODO: Rather than running this manually, we should check the
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# working sha1 and other expensive properties when they're
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# first requested, or preload them if they're already known
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pass # nothing to do by default
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def _forget_tree_state(self):
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class RootEntry(InventoryEntry):
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__slots__ = ['text_sha1', 'text_size', 'file_id', 'name', 'kind',
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'text_id', 'parent_id', 'children', 'executable',
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'revision', 'symlink_target', 'reference_revision']
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def _check(self, checker, rev_id, tree):
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"""See InventoryEntry._check"""
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def __init__(self, file_id):
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self.file_id = file_id
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self.kind = 'directory'
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self.parent_id = None
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symbol_versioning.warn('RootEntry is deprecated as of bzr 0.10.'
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' Please use InventoryDirectory instead.',
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DeprecationWarning, stacklevel=2)
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def __eq__(self, other):
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if not isinstance(other, RootEntry):
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return NotImplemented
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return (self.file_id == other.file_id) \
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and (self.children == other.children)
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class InventoryDirectory(InventoryEntry):
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"""A directory in an inventory."""
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__slots__ = ['text_sha1', 'text_size', 'file_id', 'name', 'kind',
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'text_id', 'parent_id', 'children', 'executable',
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'revision', 'symlink_target', 'reference_revision']
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def _check(self, checker, rev_id, tree):
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"""See InventoryEntry._check"""
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if self.text_sha1 is not None or self.text_size is not None or self.text_id is not None:
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raise BzrCheckError('directory {%s} has text in revision {%s}'
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% (self.file_id, rev_id))
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other = InventoryDirectory(self.file_id, self.name, self.parent_id)
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other.revision = self.revision
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# note that children are *not* copied; they're pulled across when
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def __init__(self, file_id, name, parent_id):
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super(InventoryDirectory, self).__init__(file_id, name, parent_id)
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self.kind = 'directory'
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def kind_character(self):
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"""See InventoryEntry.kind_character."""
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def _put_in_tar(self, item, tree):
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"""See InventoryEntry._put_in_tar."""
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item.type = tarfile.DIRTYPE
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def _put_on_disk(self, fullpath, tree):
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"""See InventoryEntry._put_on_disk."""
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def _snapshot_text(self, file_parents, work_tree, commit_builder):
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"""See InventoryEntry._snapshot_text."""
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commit_builder.modified_directory(self.file_id, file_parents)
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class InventoryFile(InventoryEntry):
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"""A file in an inventory."""
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__slots__ = ['text_sha1', 'text_size', 'file_id', 'name', 'kind',
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'text_id', 'parent_id', 'children', 'executable',
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'revision', 'symlink_target', 'reference_revision']
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def _check(self, checker, tree_revision_id, tree):
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"""See InventoryEntry._check"""
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t = (self.file_id, self.revision)
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if t in checker.checked_texts:
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prev_sha = checker.checked_texts[t]
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if prev_sha != self.text_sha1:
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raise BzrCheckError('mismatched sha1 on {%s} in {%s}' %
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(self.file_id, tree_revision_id))
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checker.repeated_text_cnt += 1
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if self.file_id not in checker.checked_weaves:
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mutter('check weave {%s}', self.file_id)
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w = tree._get_weave(self.file_id)
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# Not passing a progress bar, because it creates a new
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# progress, which overwrites the current progress,
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# and doesn't look nice
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checker.checked_weaves[self.file_id] = True
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w = tree._get_weave(self.file_id)
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mutter('check version {%s} of {%s}', tree_revision_id, self.file_id)
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checker.checked_text_cnt += 1
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# We can't check the length, because Weave doesn't store that
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# information, and the whole point of looking at the weave's
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# sha1sum is that we don't have to extract the text.
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if self.text_sha1 != w.get_sha1(self.revision):
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raise BzrCheckError('text {%s} version {%s} wrong sha1'
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% (self.file_id, self.revision))
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checker.checked_texts[t] = self.text_sha1
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other = InventoryFile(self.file_id, self.name, self.parent_id)
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other.executable = self.executable
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other.text_id = self.text_id
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other.text_sha1 = self.text_sha1
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other.text_size = self.text_size
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other.revision = self.revision
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def detect_changes(self, old_entry):
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"""See InventoryEntry.detect_changes."""
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assert self.text_sha1 is not None
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assert old_entry.text_sha1 is not None
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text_modified = (self.text_sha1 != old_entry.text_sha1)
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meta_modified = (self.executable != old_entry.executable)
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return text_modified, meta_modified
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def _diff(self, text_diff, from_label, tree, to_label, to_entry, to_tree,
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output_to, reverse=False):
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"""See InventoryEntry._diff."""
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from_text = tree.get_file(self.file_id).readlines()
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to_text = to_tree.get_file(to_entry.file_id).readlines()
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text_diff(from_label, from_text,
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to_label, to_text, output_to)
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text_diff(to_label, to_text,
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from_label, from_text, output_to)
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except errors.BinaryFile:
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label_pair = (to_label, from_label)
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label_pair = (from_label, to_label)
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print >> output_to, \
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("Binary files %s and %s differ" % label_pair).encode('utf8')
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"""See InventoryEntry.has_text."""
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def __init__(self, file_id, name, parent_id):
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super(InventoryFile, self).__init__(file_id, name, parent_id)
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def kind_character(self):
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"""See InventoryEntry.kind_character."""
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def _put_in_tar(self, item, tree):
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"""See InventoryEntry._put_in_tar."""
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item.type = tarfile.REGTYPE
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fileobj = tree.get_file(self.file_id)
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item.size = self.text_size
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if tree.is_executable(self.file_id):
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def _put_on_disk(self, fullpath, tree):
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"""See InventoryEntry._put_on_disk."""
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osutils.pumpfile(tree.get_file(self.file_id), file(fullpath, 'wb'))
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if tree.is_executable(self.file_id):
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os.chmod(fullpath, 0755)
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def _read_tree_state(self, path, work_tree):
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"""See InventoryEntry._read_tree_state."""
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self.text_sha1 = work_tree.get_file_sha1(self.file_id, path=path)
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# FIXME: 20050930 probe for the text size when getting sha1
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# in _read_tree_state
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self.executable = work_tree.is_executable(self.file_id, path=path)
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return ("%s(%r, %r, parent_id=%r, sha1=%r, len=%s)"
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% (self.__class__.__name__,
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def _forget_tree_state(self):
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self.text_sha1 = None
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def snapshot(self, revision, path, previous_entries,
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work_tree, commit_builder):
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"""See InventoryEntry.snapshot."""
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# Note: We use a custom implementation of this method for files
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# because it's a performance critical part of commit.
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# If this is the initial commit for this file, we know the sha is
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# coming later so skip calculating it now (in _read_tree_state())
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if len(previous_entries) == 0:
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self.executable = work_tree.is_executable(self.file_id, path=path)
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self._read_tree_state(path, work_tree)
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# If nothing is changed from the sole parent, there's nothing to do
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if len(previous_entries) == 1:
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parent_ie = previous_entries.values()[0]
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if self._unchanged(parent_ie):
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self.revision = parent_ie.revision
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# Add the file to the repository
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self.revision = revision
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def get_content_byte_lines():
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return work_tree.get_file(self.file_id, path).readlines()
743
self.text_sha1, self.text_size = commit_builder.modified_file_text(
744
self.file_id, previous_entries, get_content_byte_lines,
745
self.text_sha1, self.text_size)
748
def _unchanged(self, previous_ie):
749
"""See InventoryEntry._unchanged."""
750
compatible = super(InventoryFile, self)._unchanged(previous_ie)
751
if self.text_sha1 != previous_ie.text_sha1:
754
# FIXME: 20050930 probe for the text size when getting sha1
755
# in _read_tree_state
756
self.text_size = previous_ie.text_size
757
if self.executable != previous_ie.executable:
762
class InventoryLink(InventoryEntry):
763
"""A file in an inventory."""
765
__slots__ = ['text_sha1', 'text_size', 'file_id', 'name', 'kind',
766
'text_id', 'parent_id', 'children', 'executable',
767
'revision', 'symlink_target', 'reference_revision']
769
def _check(self, checker, rev_id, tree):
770
"""See InventoryEntry._check"""
771
if self.text_sha1 is not None or self.text_size is not None or self.text_id is not None:
772
raise BzrCheckError('symlink {%s} has text in revision {%s}'
773
% (self.file_id, rev_id))
774
if self.symlink_target is None:
775
raise BzrCheckError('symlink {%s} has no target in revision {%s}'
776
% (self.file_id, rev_id))
779
other = InventoryLink(self.file_id, self.name, self.parent_id)
780
other.symlink_target = self.symlink_target
781
other.revision = self.revision
784
def detect_changes(self, old_entry):
785
"""See InventoryEntry.detect_changes."""
786
# FIXME: which _modified field should we use ? RBC 20051003
787
text_modified = (self.symlink_target != old_entry.symlink_target)
789
mutter(" symlink target changed")
790
meta_modified = False
791
return text_modified, meta_modified
793
def _diff(self, text_diff, from_label, tree, to_label, to_entry, to_tree,
794
output_to, reverse=False):
795
"""See InventoryEntry._diff."""
796
from_text = self.symlink_target
797
if to_entry is not None:
798
to_text = to_entry.symlink_target
803
print >>output_to, '=== target changed %r => %r' % (from_text, to_text)
806
print >>output_to, '=== target was %r' % self.symlink_target
808
print >>output_to, '=== target is %r' % self.symlink_target
810
def __init__(self, file_id, name, parent_id):
811
super(InventoryLink, self).__init__(file_id, name, parent_id)
812
self.kind = 'symlink'
814
def kind_character(self):
815
"""See InventoryEntry.kind_character."""
818
def _put_in_tar(self, item, tree):
819
"""See InventoryEntry._put_in_tar."""
820
item.type = tarfile.SYMTYPE
824
item.linkname = self.symlink_target
827
def _put_on_disk(self, fullpath, tree):
828
"""See InventoryEntry._put_on_disk."""
830
os.symlink(self.symlink_target, fullpath)
832
raise BzrError("Failed to create symlink %r -> %r, error: %s" % (fullpath, self.symlink_target, e))
834
def _read_tree_state(self, path, work_tree):
835
"""See InventoryEntry._read_tree_state."""
836
self.symlink_target = work_tree.get_symlink_target(self.file_id)
838
def _forget_tree_state(self):
839
self.symlink_target = None
841
def _unchanged(self, previous_ie):
842
"""See InventoryEntry._unchanged."""
843
compatible = super(InventoryLink, self)._unchanged(previous_ie)
844
if self.symlink_target != previous_ie.symlink_target:
848
def _snapshot_text(self, file_parents, work_tree, commit_builder):
849
"""See InventoryEntry._snapshot_text."""
850
commit_builder.modified_link(
851
self.file_id, file_parents, self.symlink_target)
855
class TreeReference(InventoryEntry):
857
kind = 'tree-reference'
859
def __init__(self, file_id, name, parent_id, revision=None,
860
reference_revision=None):
861
InventoryEntry.__init__(self, file_id, name, parent_id)
862
self.revision = revision
863
self.reference_revision = reference_revision
866
return TreeReference(self.file_id, self.name, self.parent_id,
867
self.revision, self.reference_revision)
869
def _snapshot_text(self, file_parents, work_tree, commit_builder):
870
commit_builder.modified_reference(self.file_id, file_parents)
873
def _read_tree_state(self, path, work_tree):
874
"""Populate fields in the inventory entry from the given tree.
876
self.reference_revision = work_tree.get_reference_revision(
879
def _forget_tree_state(self):
880
self.reference_revision = None
882
def _unchanged(self, previous_ie):
883
"""See InventoryEntry._unchanged."""
884
compatible = super(TreeReference, self)._unchanged(previous_ie)
885
if self.reference_revision != previous_ie.reference_revision:
890
class Inventory(object):
891
"""Inventory of versioned files in a tree.
893
This describes which file_id is present at each point in the tree,
894
and possibly the SHA-1 or other information about the file.
895
Entries can be looked up either by path or by file_id.
897
The inventory represents a typical unix file tree, with
898
directories containing files and subdirectories. We never store
899
the full path to a file, because renaming a directory implicitly
900
moves all of its contents. This class internally maintains a
901
lookup tree that allows the children under a directory to be
904
InventoryEntry objects must not be modified after they are
905
inserted, other than through the Inventory API.
907
>>> inv = Inventory()
908
>>> inv.add(InventoryFile('123-123', 'hello.c', ROOT_ID))
909
InventoryFile('123-123', 'hello.c', parent_id='TREE_ROOT', sha1=None, len=None)
910
>>> inv['123-123'].name
913
May be treated as an iterator or set to look up file ids:
915
>>> bool(inv.path2id('hello.c'))
920
May also look up by name:
922
>>> [x[0] for x in inv.iter_entries()]
924
>>> inv = Inventory('TREE_ROOT-12345678-12345678')
925
>>> inv.add(InventoryFile('123-123', 'hello.c', ROOT_ID))
926
Traceback (most recent call last):
927
BzrError: parent_id {TREE_ROOT} not in inventory
928
>>> inv.add(InventoryFile('123-123', 'hello.c', 'TREE_ROOT-12345678-12345678'))
929
InventoryFile('123-123', 'hello.c', parent_id='TREE_ROOT-12345678-12345678', sha1=None, len=None)
931
def __init__(self, root_id=ROOT_ID, revision_id=None):
932
"""Create or read an inventory.
934
If a working directory is specified, the inventory is read
935
from there. If the file is specified, read from that. If not,
936
the inventory is created empty.
938
The inventory is created with a default root directory, with
941
if root_id is not None:
942
assert root_id.__class__ == str
943
self._set_root(InventoryDirectory(root_id, u'', None))
947
self.revision_id = revision_id
949
def _set_root(self, ie):
951
self._byid = {self.root.file_id: self.root}
954
# TODO: jam 20051218 Should copy also copy the revision_id?
955
entries = self.iter_entries()
956
other = Inventory(entries.next()[1].file_id)
957
# copy recursively so we know directories will be added before
958
# their children. There are more efficient ways than this...
959
for path, entry in entries():
960
other.add(entry.copy())
964
return iter(self._byid)
967
"""Returns number of entries."""
968
return len(self._byid)
970
def iter_entries(self, from_dir=None):
971
"""Return (path, entry) pairs, in order by name."""
973
if self.root is None:
977
elif isinstance(from_dir, basestring):
978
from_dir = self._byid[from_dir]
980
# unrolling the recursive called changed the time from
981
# 440ms/663ms (inline/total) to 116ms/116ms
982
children = from_dir.children.items()
984
children = collections.deque(children)
985
stack = [(u'', children)]
987
from_dir_relpath, children = stack[-1]
990
name, ie = children.popleft()
992
# we know that from_dir_relpath never ends in a slash
993
# and 'f' doesn't begin with one, we can do a string op, rather
994
# than the checks of pathjoin(), though this means that all paths
996
path = from_dir_relpath + '/' + name
1000
if ie.kind != 'directory':
1003
# But do this child first
1004
new_children = ie.children.items()
1006
new_children = collections.deque(new_children)
1007
stack.append((path, new_children))
1008
# Break out of inner loop, so that we start outer loop with child
1011
# if we finished all children, pop it off the stack
1014
def iter_entries_by_dir(self, from_dir=None, specific_file_ids=None):
1015
"""Iterate over the entries in a directory first order.
1017
This returns all entries for a directory before returning
1018
the entries for children of a directory. This is not
1019
lexicographically sorted order, and is a hybrid between
1020
depth-first and breadth-first.
1022
:return: This yields (path, entry) pairs
1024
if specific_file_ids:
1025
safe = osutils.safe_file_id
1026
specific_file_ids = set(safe(fid) for fid in specific_file_ids)
1027
# TODO? Perhaps this should return the from_dir so that the root is
1028
# yielded? or maybe an option?
1029
if from_dir is None:
1030
if self.root is None:
1032
# Optimize a common case
1033
if specific_file_ids is not None and len(specific_file_ids) == 1:
1034
file_id = list(specific_file_ids)[0]
1036
yield self.id2path(file_id), self[file_id]
1038
from_dir = self.root
1039
if (specific_file_ids is None or
1040
self.root.file_id in specific_file_ids):
1041
yield u'', self.root
1042
elif isinstance(from_dir, basestring):
1043
from_dir = self._byid[from_dir]
1045
if specific_file_ids is not None:
1046
# TODO: jam 20070302 This could really be done as a loop rather
1047
# than a bunch of recursive calls.
1050
def add_ancestors(file_id):
1051
if file_id not in byid:
1053
parent_id = byid[file_id].parent_id
1054
if parent_id is None:
1056
if parent_id not in parents:
1057
parents.add(parent_id)
1058
add_ancestors(parent_id)
1059
for file_id in specific_file_ids:
1060
add_ancestors(file_id)
1064
stack = [(u'', from_dir)]
1066
cur_relpath, cur_dir = stack.pop()
1069
for child_name, child_ie in sorted(cur_dir.children.iteritems()):
1071
child_relpath = cur_relpath + child_name
1073
if (specific_file_ids is None or
1074
child_ie.file_id in specific_file_ids):
1075
yield child_relpath, child_ie
1077
if child_ie.kind == 'directory':
1078
if parents is None or child_ie.file_id in parents:
1079
child_dirs.append((child_relpath+'/', child_ie))
1080
stack.extend(reversed(child_dirs))
1082
def make_entry(self, kind, name, parent_id, file_id=None):
1083
"""Simple thunk to bzrlib.inventory.make_entry."""
1084
return make_entry(kind, name, parent_id, file_id)
1087
"""Return list of (path, ie) for all entries except the root.
1089
This may be faster than iter_entries.
1092
def descend(dir_ie, dir_path):
1093
kids = dir_ie.children.items()
1095
for name, ie in kids:
1096
child_path = osutils.pathjoin(dir_path, name)
1097
accum.append((child_path, ie))
1098
if ie.kind == 'directory':
1099
descend(ie, child_path)
1101
descend(self.root, u'')
1104
def directories(self):
1105
"""Return (path, entry) pairs for all directories, including the root.
1108
def descend(parent_ie, parent_path):
1109
accum.append((parent_path, parent_ie))
1111
kids = [(ie.name, ie) for ie in parent_ie.children.itervalues() if ie.kind == 'directory']
1114
for name, child_ie in kids:
1115
child_path = osutils.pathjoin(parent_path, name)
1116
descend(child_ie, child_path)
1117
descend(self.root, u'')
1120
def __contains__(self, file_id):
1121
"""True if this entry contains a file with given id.
1123
>>> inv = Inventory()
1124
>>> inv.add(InventoryFile('123', 'foo.c', ROOT_ID))
1125
InventoryFile('123', 'foo.c', parent_id='TREE_ROOT', sha1=None, len=None)
1131
file_id = osutils.safe_file_id(file_id)
1132
return (file_id in self._byid)
1134
def __getitem__(self, file_id):
1135
"""Return the entry for given file_id.
1137
>>> inv = Inventory()
1138
>>> inv.add(InventoryFile('123123', 'hello.c', ROOT_ID))
1139
InventoryFile('123123', 'hello.c', parent_id='TREE_ROOT', sha1=None, len=None)
1140
>>> inv['123123'].name
1143
file_id = osutils.safe_file_id(file_id)
1145
return self._byid[file_id]
1147
# really we're passing an inventory, not a tree...
1148
raise errors.NoSuchId(self, file_id)
1150
def get_file_kind(self, file_id):
1151
file_id = osutils.safe_file_id(file_id)
1152
return self._byid[file_id].kind
1154
def get_child(self, parent_id, filename):
1155
parent_id = osutils.safe_file_id(parent_id)
1156
return self[parent_id].children.get(filename)
1158
def _add_child(self, entry):
1159
"""Add an entry to the inventory, without adding it to its parent"""
1160
if entry.file_id in self._byid:
1161
raise BzrError("inventory already contains entry with id {%s}" %
1163
self._byid[entry.file_id] = entry
1164
for child in getattr(entry, 'children', {}).itervalues():
1165
self._add_child(child)
1168
def add(self, entry):
1169
"""Add entry to inventory.
1171
To add a file to a branch ready to be committed, use Branch.add,
1174
Returns the new entry object.
1176
if entry.file_id in self._byid:
1177
raise errors.DuplicateFileId(entry.file_id,
1178
self._byid[entry.file_id])
1180
if entry.parent_id is None:
1181
assert self.root is None and len(self._byid) == 0
1185
parent = self._byid[entry.parent_id]
1187
raise BzrError("parent_id {%s} not in inventory" %
1190
if entry.name in parent.children:
1191
raise BzrError("%s is already versioned" %
1192
osutils.pathjoin(self.id2path(parent.file_id),
1193
entry.name).encode('utf-8'))
1194
parent.children[entry.name] = entry
1195
return self._add_child(entry)
1197
def add_path(self, relpath, kind, file_id=None, parent_id=None):
1198
"""Add entry from a path.
1200
The immediate parent must already be versioned.
1202
Returns the new entry object."""
1204
parts = osutils.splitpath(relpath)
1208
file_id = generate_ids.gen_root_id()
1210
file_id = osutils.safe_file_id(file_id)
1211
self.root = InventoryDirectory(file_id, '', None)
1212
self._byid = {self.root.file_id: self.root}
1215
parent_path = parts[:-1]
1216
parent_id = self.path2id(parent_path)
1217
if parent_id is None:
1218
raise errors.NotVersionedError(path=parent_path)
1219
ie = make_entry(kind, parts[-1], parent_id, file_id)
1222
def __delitem__(self, file_id):
1223
"""Remove entry by id.
1225
>>> inv = Inventory()
1226
>>> inv.add(InventoryFile('123', 'foo.c', ROOT_ID))
1227
InventoryFile('123', 'foo.c', parent_id='TREE_ROOT', sha1=None, len=None)
1234
file_id = osutils.safe_file_id(file_id)
1237
assert ie.parent_id is None or \
1238
self[ie.parent_id].children[ie.name] == ie
1240
del self._byid[file_id]
1241
if ie.parent_id is not None:
1242
del self[ie.parent_id].children[ie.name]
1244
def __eq__(self, other):
1245
"""Compare two sets by comparing their contents.
1247
>>> i1 = Inventory()
1248
>>> i2 = Inventory()
1251
>>> i1.add(InventoryFile('123', 'foo', ROOT_ID))
1252
InventoryFile('123', 'foo', parent_id='TREE_ROOT', sha1=None, len=None)
1255
>>> i2.add(InventoryFile('123', 'foo', ROOT_ID))
1256
InventoryFile('123', 'foo', parent_id='TREE_ROOT', sha1=None, len=None)
1260
if not isinstance(other, Inventory):
1261
return NotImplemented
1263
return self._byid == other._byid
1265
def __ne__(self, other):
1266
return not self.__eq__(other)
1269
raise ValueError('not hashable')
1271
def _iter_file_id_parents(self, file_id):
1272
"""Yield the parents of file_id up to the root."""
1273
file_id = osutils.safe_file_id(file_id)
1274
while file_id is not None:
1276
ie = self._byid[file_id]
1278
raise errors.NoSuchId(tree=None, file_id=file_id)
1280
file_id = ie.parent_id
1282
def get_idpath(self, file_id):
1283
"""Return a list of file_ids for the path to an entry.
1285
The list contains one element for each directory followed by
1286
the id of the file itself. So the length of the returned list
1287
is equal to the depth of the file in the tree, counting the
1288
root directory as depth 1.
1290
file_id = osutils.safe_file_id(file_id)
1292
for parent in self._iter_file_id_parents(file_id):
1293
p.insert(0, parent.file_id)
1296
def id2path(self, file_id):
1297
"""Return as a string the path to file_id.
1300
>>> e = i.add(InventoryDirectory('src-id', 'src', ROOT_ID))
1301
>>> e = i.add(InventoryFile('foo-id', 'foo.c', parent_id='src-id'))
1302
>>> print i.id2path('foo-id')
1305
file_id = osutils.safe_file_id(file_id)
1306
# get all names, skipping root
1307
return '/'.join(reversed(
1308
[parent.name for parent in
1309
self._iter_file_id_parents(file_id)][:-1]))
1311
def path2id(self, name):
1312
"""Walk down through directories to return entry of last component.
1314
names may be either a list of path components, or a single
1315
string, in which case it is automatically split.
1317
This returns the entry of the last component in the path,
1318
which may be either a file or a directory.
1320
Returns None IFF the path is not found.
1322
if isinstance(name, basestring):
1323
name = osutils.splitpath(name)
1325
# mutter("lookup path %r" % name)
1332
children = getattr(parent, 'children', None)
1333
if children is None:
1336
assert cie.name == f
1337
assert cie.parent_id == parent.file_id
1340
# or raise an error?
1343
return parent.file_id
1345
def has_filename(self, names):
1346
return bool(self.path2id(names))
1348
def has_id(self, file_id):
1349
file_id = osutils.safe_file_id(file_id)
1350
return (file_id in self._byid)
1352
def remove_recursive_id(self, file_id):
1353
"""Remove file_id, and children, from the inventory.
1355
:param file_id: A file_id to remove.
1357
file_id = osutils.safe_file_id(file_id)
1358
to_find_delete = [self._byid[file_id]]
1360
while to_find_delete:
1361
ie = to_find_delete.pop()
1362
to_delete.append(ie.file_id)
1363
if ie.kind == 'directory':
1364
to_find_delete.extend(ie.children.values())
1365
for file_id in reversed(to_delete):
1367
del self._byid[file_id]
1368
if ie.parent_id is not None:
1369
del self[ie.parent_id].children[ie.name]
1373
def rename(self, file_id, new_parent_id, new_name):
1374
"""Move a file within the inventory.
1376
This can change either the name, or the parent, or both.
1378
This does not move the working file.
1380
file_id = osutils.safe_file_id(file_id)
1381
if not is_valid_name(new_name):
1382
raise BzrError("not an acceptable filename: %r" % new_name)
1384
new_parent = self._byid[new_parent_id]
1385
if new_name in new_parent.children:
1386
raise BzrError("%r already exists in %r" % (new_name, self.id2path(new_parent_id)))
1388
new_parent_idpath = self.get_idpath(new_parent_id)
1389
if file_id in new_parent_idpath:
1390
raise BzrError("cannot move directory %r into a subdirectory of itself, %r"
1391
% (self.id2path(file_id), self.id2path(new_parent_id)))
1393
file_ie = self._byid[file_id]
1394
old_parent = self._byid[file_ie.parent_id]
1396
# TODO: Don't leave things messed up if this fails
1398
del old_parent.children[file_ie.name]
1399
new_parent.children[new_name] = file_ie
1401
file_ie.name = new_name
1402
file_ie.parent_id = new_parent_id
1404
def is_root(self, file_id):
1405
file_id = osutils.safe_file_id(file_id)
1406
return self.root is not None and file_id == self.root.file_id
1410
'directory': InventoryDirectory,
1411
'file': InventoryFile,
1412
'symlink': InventoryLink,
1413
'tree-reference': TreeReference
1416
def make_entry(kind, name, parent_id, file_id=None):
1417
"""Create an inventory entry.
1419
:param kind: the type of inventory entry to create.
1420
:param name: the basename of the entry.
1421
:param parent_id: the parent_id of the entry.
1422
:param file_id: the file_id to use. if None, one will be created.
1425
file_id = generate_ids.gen_file_id(name)
1427
file_id = osutils.safe_file_id(file_id)
1429
#------- This has been copied to bzrlib.dirstate.DirState.add, please
1430
# keep them synchronised.
1431
# we dont import normalized_filename directly because we want to be
1432
# able to change the implementation at runtime for tests.
1433
norm_name, can_access = osutils.normalized_filename(name)
1434
if norm_name != name:
1438
# TODO: jam 20060701 This would probably be more useful
1439
# if the error was raised with the full path
1440
raise errors.InvalidNormalization(name)
1443
factory = entry_factory[kind]
1445
raise BzrError("unknown kind %r" % kind)
1446
return factory(file_id, name, parent_id)
1451
def is_valid_name(name):
1453
if _NAME_RE is None:
1454
_NAME_RE = re.compile(r'^[^/\\]+$')
1456
return bool(_NAME_RE.match(name))
added
removed
bzrlib/inventory.py
