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# (C) 2005 Canonical Ltd
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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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ROOT_ID = "TREE_ROOT"
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import sys, os.path, types, re
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from cElementTree import Element, ElementTree, SubElement
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from elementtree.ElementTree import Element, ElementTree, SubElement
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from xml import XMLMixin
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from errors import bailout, BzrError, BzrCheckError
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from bzrlib.lazy_import import lazy_import
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lazy_import(globals(), """
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from bzrlib.osutils import uuid, quotefn, splitpath, joinpath, appendpath
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from bzrlib.errors import (
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from bzrlib.symbol_versioning import deprecated_method
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from bzrlib.trace import mutter
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class InventoryEntry(XMLMixin):
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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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* *name*: (only the basename within the directory, must not
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* *kind*: "directory" or "file"
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* *directory_id*: (if absent/null means the branch root directory)
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* *text_sha1*: only for files
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* *text_size*: in bytes, only for files
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* *text_id*: identifier for the text version, only for files
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InventoryEntries can also exist inside a WorkingTree
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inventory, in which case they are not yet bound to a
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particular revision of the file. In that case the text_sha1,
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text_size and text_id are absent.
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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 = Inventory()
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>>> i.add(InventoryEntry('123', 'src', 'directory', ROOT_ID))
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>>> i.add(InventoryEntry('2323', 'hello.c', 'file', parent_id='123'))
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>>> for j in i.iter_entries():
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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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('src', InventoryEntry('123', 'src', kind='directory', parent_id='TREE_ROOT'))
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('src/hello.c', InventoryEntry('2323', 'hello.c', kind='file', parent_id='123'))
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>>> i.add(InventoryEntry('2323', 'bye.c', 'file', '123'))
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Traceback (most recent call last):
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BzrError: ('inventory already contains entry with id {2323}', [])
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>>> i.add(InventoryEntry('2324', 'bye.c', 'file', '123'))
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>>> i.add(InventoryEntry('2325', 'wibble', 'directory', '123'))
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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(InventoryEntry('2326', 'wibble.c', 'file', '2325'))
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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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InventoryEntry('2326', 'wibble.c', kind='file', parent_id='2325')
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>>> for j in i.iter_entries():
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... assert i.path2id(j[0])
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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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src/wibble/wibble.c
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>>> i.id2path('2326')
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'src/wibble/wibble.c'
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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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# TODO: split InventoryEntry into subclasses for files,
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# directories, etc etc.
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def __init__(self, file_id, name, kind, parent_id, text_id=None):
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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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@deprecated_method(symbol_versioning.one_zero)
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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(symbol_versioning.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 = InventoryEntry('123', 'hello.c', 'file', ROOT_ID)
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>>> e = InventoryFile('123', 'hello.c', ROOT_ID)
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>>> e = InventoryEntry('123', 'src/hello.c', 'file', 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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BzrCheckError: InventoryEntry name 'src/hello.c' is invalid
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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 BzrCheckError('InventoryEntry name %r is invalid' % 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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if kind == 'directory':
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raise BzrError("unhandled entry kind %r" % kind)
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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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l = self.children.items()
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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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other = InventoryEntry(self.file_id, self.name, self.kind,
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self.parent_id, 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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"""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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def __repr__(self):
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return ("%s(%r, %r, kind=%r, parent_id=%r)"
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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 to_element(self):
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"""Convert to XML element"""
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e.set('name', self.name)
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e.set('file_id', self.file_id)
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e.set('kind', self.kind)
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if self.text_size != None:
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e.set('text_size', '%d' % self.text_size)
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for f in ['text_id', 'text_sha1']:
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# to be conservative, we don't externalize the root pointers
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# for now, leaving them as null in the xml form. in a future
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# version it will be implied by nested elements.
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if self.parent_id != ROOT_ID:
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assert isinstance(self.parent_id, basestring)
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e.set('parent_id', self.parent_id)
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def from_element(cls, elt):
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assert elt.tag == 'entry'
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## original format inventories don't have a parent_id for
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## nodes in the root directory, but it's cleaner to use one
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parent_id = elt.get('parent_id')
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if parent_id == None:
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self = cls(elt.get('file_id'), elt.get('name'), elt.get('kind'), parent_id)
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self.text_id = elt.get('text_id')
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self.text_sha1 = elt.get('text_sha1')
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## mutter("read inventoryentry: %r" % (elt.attrib))
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v = elt.get('text_size')
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self.text_size = v and int(v)
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from_element = classmethod(from_element)
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def __cmp__(self, other):
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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 cmp(self.file_id, other.file_id) \
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or cmp(self.name, other.name) \
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or cmp(self.text_sha1, other.text_sha1) \
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or cmp(self.text_size, other.text_size) \
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or cmp(self.text_id, other.text_id) \
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or cmp(self.parent_id, other.parent_id) \
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or cmp(self.kind, other.kind)
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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.children = {}
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self.kind = 'root_directory'
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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 __cmp__(self, other):
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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 cmp(self.file_id, other.file_id) \
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or cmp(self.children, other.children)
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class Inventory(XMLMixin):
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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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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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'mismatched sha1 on {%s} in {%s} (%s != %s) %r' %
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(self.file_id, tree_revision_id, prev_sha, self.text_sha1,
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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
586
# progress, which overwrites the current progress,
587
# and doesn't look nice
589
checker.checked_weaves[self.file_id] = True
591
w = tree._get_weave(self.file_id)
593
mutter('check version {%s} of {%s}', tree_revision_id, self.file_id)
594
checker.checked_text_cnt += 1
595
# We can't check the length, because Weave doesn't store that
596
# information, and the whole point of looking at the weave's
597
# sha1sum is that we don't have to extract the text.
598
if self.text_sha1 != w.get_sha1(self.revision):
599
raise BzrCheckError('text {%s} version {%s} wrong sha1'
600
% (self.file_id, self.revision))
601
checker.checked_texts[t] = self.text_sha1
604
other = InventoryFile(self.file_id, self.name, self.parent_id)
605
other.executable = self.executable
606
other.text_id = self.text_id
607
other.text_sha1 = self.text_sha1
608
other.text_size = self.text_size
609
other.revision = self.revision
612
def detect_changes(self, old_entry):
613
"""See InventoryEntry.detect_changes."""
614
assert self.text_sha1 is not None
615
assert old_entry.text_sha1 is not None
616
text_modified = (self.text_sha1 != old_entry.text_sha1)
617
meta_modified = (self.executable != old_entry.executable)
618
return text_modified, meta_modified
620
def _diff(self, text_diff, from_label, tree, to_label, to_entry, to_tree,
621
output_to, reverse=False):
622
"""See InventoryEntry._diff."""
623
from bzrlib.diff import DiffText
624
from_file_id = self.file_id
626
to_file_id = to_entry.file_id
630
to_file_id, from_file_id = from_file_id, to_file_id
631
tree, to_tree = to_tree, tree
632
from_label, to_label = to_label, from_label
633
differ = DiffText(tree, to_tree, output_to, 'utf-8', '', '',
635
return differ.diff_text(from_file_id, to_file_id, from_label, to_label)
638
"""See InventoryEntry.has_text."""
641
def __init__(self, file_id, name, parent_id):
642
super(InventoryFile, self).__init__(file_id, name, parent_id)
645
def kind_character(self):
646
"""See InventoryEntry.kind_character."""
649
def _put_in_tar(self, item, tree):
650
"""See InventoryEntry._put_in_tar."""
651
item.type = tarfile.REGTYPE
652
fileobj = tree.get_file(self.file_id)
653
item.size = self.text_size
654
if tree.is_executable(self.file_id):
660
def _put_on_disk(self, fullpath, tree):
661
"""See InventoryEntry._put_on_disk."""
662
osutils.pumpfile(tree.get_file(self.file_id), file(fullpath, 'wb'))
663
if tree.is_executable(self.file_id):
664
os.chmod(fullpath, 0755)
666
def _read_tree_state(self, path, work_tree):
667
"""See InventoryEntry._read_tree_state."""
668
self.text_sha1 = work_tree.get_file_sha1(self.file_id, path=path)
669
# FIXME: 20050930 probe for the text size when getting sha1
670
# in _read_tree_state
671
self.executable = work_tree.is_executable(self.file_id, path=path)
674
return ("%s(%r, %r, parent_id=%r, sha1=%r, len=%s)"
675
% (self.__class__.__name__,
682
def _forget_tree_state(self):
683
self.text_sha1 = None
685
def _unchanged(self, previous_ie):
686
"""See InventoryEntry._unchanged."""
687
compatible = super(InventoryFile, self)._unchanged(previous_ie)
688
if self.text_sha1 != previous_ie.text_sha1:
691
# FIXME: 20050930 probe for the text size when getting sha1
692
# in _read_tree_state
693
self.text_size = previous_ie.text_size
694
if self.executable != previous_ie.executable:
699
class InventoryLink(InventoryEntry):
700
"""A file in an inventory."""
702
__slots__ = ['text_sha1', 'text_size', 'file_id', 'name', 'kind',
703
'text_id', 'parent_id', 'children', 'executable',
704
'revision', 'symlink_target', 'reference_revision']
706
def _check(self, checker, rev_id, tree):
707
"""See InventoryEntry._check"""
708
if self.text_sha1 is not None or self.text_size is not None or self.text_id is not None:
709
raise BzrCheckError('symlink {%s} has text in revision {%s}'
710
% (self.file_id, rev_id))
711
if self.symlink_target is None:
712
raise BzrCheckError('symlink {%s} has no target in revision {%s}'
713
% (self.file_id, rev_id))
716
other = InventoryLink(self.file_id, self.name, self.parent_id)
717
other.symlink_target = self.symlink_target
718
other.revision = self.revision
721
def detect_changes(self, old_entry):
722
"""See InventoryEntry.detect_changes."""
723
# FIXME: which _modified field should we use ? RBC 20051003
724
text_modified = (self.symlink_target != old_entry.symlink_target)
726
mutter(" symlink target changed")
727
meta_modified = False
728
return text_modified, meta_modified
730
def _diff(self, text_diff, from_label, tree, to_label, to_entry, to_tree,
731
output_to, reverse=False):
732
"""See InventoryEntry._diff."""
733
from bzrlib.diff import DiffSymlink
734
old_target = self.symlink_target
735
if to_entry is not None:
736
new_target = to_entry.symlink_target
745
new_target, old_target = old_target, new_target
746
differ = DiffSymlink(old_tree, new_tree, output_to)
747
return differ.diff_symlink(old_target, new_target)
749
def __init__(self, file_id, name, parent_id):
750
super(InventoryLink, self).__init__(file_id, name, parent_id)
751
self.kind = 'symlink'
753
def kind_character(self):
754
"""See InventoryEntry.kind_character."""
757
def _put_in_tar(self, item, tree):
758
"""See InventoryEntry._put_in_tar."""
759
item.type = tarfile.SYMTYPE
763
item.linkname = self.symlink_target
766
def _put_on_disk(self, fullpath, tree):
767
"""See InventoryEntry._put_on_disk."""
769
os.symlink(self.symlink_target, fullpath)
771
raise BzrError("Failed to create symlink %r -> %r, error: %s" % (fullpath, self.symlink_target, e))
773
def _read_tree_state(self, path, work_tree):
774
"""See InventoryEntry._read_tree_state."""
775
self.symlink_target = work_tree.get_symlink_target(self.file_id)
777
def _forget_tree_state(self):
778
self.symlink_target = None
780
def _unchanged(self, previous_ie):
781
"""See InventoryEntry._unchanged."""
782
compatible = super(InventoryLink, self)._unchanged(previous_ie)
783
if self.symlink_target != previous_ie.symlink_target:
788
class TreeReference(InventoryEntry):
790
kind = 'tree-reference'
792
def __init__(self, file_id, name, parent_id, revision=None,
793
reference_revision=None):
794
InventoryEntry.__init__(self, file_id, name, parent_id)
795
self.revision = revision
796
self.reference_revision = reference_revision
799
return TreeReference(self.file_id, self.name, self.parent_id,
800
self.revision, self.reference_revision)
802
def _read_tree_state(self, path, work_tree):
803
"""Populate fields in the inventory entry from the given tree.
805
self.reference_revision = work_tree.get_reference_revision(
808
def _forget_tree_state(self):
809
self.reference_revision = None
811
def _unchanged(self, previous_ie):
812
"""See InventoryEntry._unchanged."""
813
compatible = super(TreeReference, self)._unchanged(previous_ie)
814
if self.reference_revision != previous_ie.reference_revision:
819
class Inventory(object):
247
820
"""Inventory of versioned files in a tree.
249
822
This describes which file_id is present at each point in the tree,
296
867
The inventory is created with a default root directory, with
299
self.root = RootEntry(ROOT_ID)
870
if root_id is not None:
871
assert root_id.__class__ == str
872
self._set_root(InventoryDirectory(root_id, u'', None))
876
self.revision_id = revision_id
879
return "<Inventory object at %x, contents=%r>" % (id(self), self._byid)
881
def apply_delta(self, delta):
882
"""Apply a delta to this inventory.
884
:param delta: A list of changes to apply. After all the changes are
885
applied the final inventory must be internally consistent, but it
886
is ok to supply changes which, if only half-applied would have an
887
invalid result - such as supplying two changes which rename two
888
files, 'A' and 'B' with each other : [('A', 'B', 'A-id', a_entry),
889
('B', 'A', 'B-id', b_entry)].
891
Each change is a tuple, of the form (old_path, new_path, file_id,
894
When new_path is None, the change indicates the removal of an entry
895
from the inventory and new_entry will be ignored (using None is
896
appropriate). If new_path is not None, then new_entry must be an
897
InventoryEntry instance, which will be incorporated into the
898
inventory (and replace any existing entry with the same file id).
900
When old_path is None, the change indicates the addition of
901
a new entry to the inventory.
903
When neither new_path nor old_path are None, the change is a
904
modification to an entry, such as a rename, reparent, kind change
907
The children attribute of new_entry is ignored. This is because
908
this method preserves children automatically across alterations to
909
the parent of the children, and cases where the parent id of a
910
child is changing require the child to be passed in as a separate
911
change regardless. E.g. in the recursive deletion of a directory -
912
the directory's children must be included in the delta, or the
913
final inventory will be invalid.
916
# Remove all affected items which were in the original inventory,
917
# starting with the longest paths, thus ensuring parents are examined
918
# after their children, which means that everything we examine has no
919
# modified children remaining by the time we examine it.
920
for old_path, file_id in sorted(((op, f) for op, np, f, e in delta
921
if op is not None), reverse=True):
922
if file_id not in self:
925
# Preserve unaltered children of file_id for later reinsertion.
926
children[file_id] = getattr(self[file_id], 'children', {})
927
# Remove file_id and the unaltered children. If file_id is not
928
# being deleted it will be reinserted back later.
929
self.remove_recursive_id(file_id)
930
# Insert all affected which should be in the new inventory, reattaching
931
# their children if they had any. This is done from shortest path to
932
# longest, ensuring that items which were modified and whose parents in
933
# the resulting inventory were also modified, are inserted after their
935
for new_path, new_entry in sorted((np, e) for op, np, f, e in
936
delta if np is not None):
937
if new_entry.kind == 'directory':
938
new_entry.children = children.get(new_entry.file_id, {})
941
def _set_root(self, ie):
300
943
self._byid = {self.root.file_id: self.root}
946
# TODO: jam 20051218 Should copy also copy the revision_id?
947
entries = self.iter_entries()
948
if self.root is None:
949
return Inventory(root_id=None)
950
other = Inventory(entries.next()[1].file_id)
951
# copy recursively so we know directories will be added before
952
# their children. There are more efficient ways than this...
953
for path, entry in entries:
954
other.add(entry.copy())
303
957
def __iter__(self):
304
958
return iter(self._byid)
307
960
def __len__(self):
308
961
"""Returns number of entries."""
309
962
return len(self._byid)
312
964
def iter_entries(self, from_dir=None):
313
965
"""Return (path, entry) pairs, in order by name."""
317
elif isinstance(from_dir, basestring):
318
from_dir = self._byid[from_dir]
320
kids = from_dir.children.items()
322
for name, ie in kids:
324
if ie.kind == 'directory':
325
for cn, cie in self.iter_entries(from_dir=ie.file_id):
326
yield os.path.join(name, cn), cie
967
if self.root is None:
971
elif isinstance(from_dir, basestring):
972
from_dir = self._byid[from_dir]
974
# unrolling the recursive called changed the time from
975
# 440ms/663ms (inline/total) to 116ms/116ms
976
children = from_dir.children.items()
978
children = collections.deque(children)
979
stack = [(u'', children)]
981
from_dir_relpath, children = stack[-1]
984
name, ie = children.popleft()
986
# we know that from_dir_relpath never ends in a slash
987
# and 'f' doesn't begin with one, we can do a string op, rather
988
# than the checks of pathjoin(), though this means that all paths
990
path = from_dir_relpath + '/' + name
994
if ie.kind != 'directory':
997
# But do this child first
998
new_children = ie.children.items()
1000
new_children = collections.deque(new_children)
1001
stack.append((path, new_children))
1002
# Break out of inner loop, so that we start outer loop with child
1005
# if we finished all children, pop it off the stack
1008
def iter_entries_by_dir(self, from_dir=None, specific_file_ids=None,
1009
yield_parents=False):
1010
"""Iterate over the entries in a directory first order.
1012
This returns all entries for a directory before returning
1013
the entries for children of a directory. This is not
1014
lexicographically sorted order, and is a hybrid between
1015
depth-first and breadth-first.
1017
:param yield_parents: If True, yield the parents from the root leading
1018
down to specific_file_ids that have been requested. This has no
1019
impact if specific_file_ids is None.
1020
:return: This yields (path, entry) pairs
1022
if specific_file_ids and not isinstance(specific_file_ids, set):
1023
specific_file_ids = set(specific_file_ids)
1024
# TODO? Perhaps this should return the from_dir so that the root is
1025
# yielded? or maybe an option?
1026
if from_dir is None:
1027
if self.root is None:
1029
# Optimize a common case
1030
if (not yield_parents and specific_file_ids is not None and
1031
len(specific_file_ids) == 1):
1032
file_id = list(specific_file_ids)[0]
1034
yield self.id2path(file_id), self[file_id]
1036
from_dir = self.root
1037
if (specific_file_ids is None or yield_parents or
1038
self.root.file_id in specific_file_ids):
1039
yield u'', self.root
1040
elif isinstance(from_dir, basestring):
1041
from_dir = self._byid[from_dir]
1043
if specific_file_ids is not None:
1044
# TODO: jam 20070302 This could really be done as a loop rather
1045
# than a bunch of recursive calls.
1048
def add_ancestors(file_id):
1049
if file_id not in byid:
1051
parent_id = byid[file_id].parent_id
1052
if parent_id is None:
1054
if parent_id not in parents:
1055
parents.add(parent_id)
1056
add_ancestors(parent_id)
1057
for file_id in specific_file_ids:
1058
add_ancestors(file_id)
1062
stack = [(u'', from_dir)]
1064
cur_relpath, cur_dir = stack.pop()
1067
for child_name, child_ie in sorted(cur_dir.children.iteritems()):
1069
child_relpath = cur_relpath + child_name
1071
if (specific_file_ids is None or
1072
child_ie.file_id in specific_file_ids or
1073
(yield_parents and child_ie.file_id in parents)):
1074
yield child_relpath, child_ie
1076
if child_ie.kind == 'directory':
1077
if parents is None or child_ie.file_id in parents:
1078
child_dirs.append((child_relpath+'/', child_ie))
1079
stack.extend(reversed(child_dirs))
1081
def make_entry(self, kind, name, parent_id, file_id=None):
1082
"""Simple thunk to bzrlib.inventory.make_entry."""
1083
return make_entry(kind, name, parent_id, file_id)
1086
"""Return list of (path, ie) for all entries except the root.
1088
This may be faster than iter_entries.
1091
def descend(dir_ie, dir_path):
1092
kids = dir_ie.children.items()
1094
for name, ie in kids:
1095
child_path = osutils.pathjoin(dir_path, name)
1096
accum.append((child_path, ie))
1097
if ie.kind == 'directory':
1098
descend(ie, child_path)
1100
descend(self.root, u'')
330
1103
def directories(self):
331
"""Return (path, entry) pairs for all directories.
1104
"""Return (path, entry) pairs for all directories, including the root.
333
def descend(parent_ie):
334
parent_name = parent_ie.name
335
yield parent_name, parent_ie
337
# directory children in sorted order
339
for ie in parent_ie.children.itervalues():
340
if ie.kind == 'directory':
341
dn.append((ie.name, ie))
1107
def descend(parent_ie, parent_path):
1108
accum.append((parent_path, parent_ie))
344
for name, child_ie in dn:
345
for sub_name, sub_ie in descend(child_ie):
346
yield appendpath(parent_name, sub_name), sub_ie
1110
kids = [(ie.name, ie) for ie in parent_ie.children.itervalues() if ie.kind == 'directory']
348
for name, ie in descend(self.root):
1113
for name, child_ie in kids:
1114
child_path = osutils.pathjoin(parent_path, name)
1115
descend(child_ie, child_path)
1116
descend(self.root, u'')
353
1119
def __contains__(self, file_id):
354
1120
"""True if this entry contains a file with given id.
356
1122
>>> inv = Inventory()
357
>>> inv.add(InventoryEntry('123', 'foo.c', 'file', ROOT_ID))
1123
>>> inv.add(InventoryFile('123', 'foo.c', ROOT_ID))
1124
InventoryFile('123', 'foo.c', parent_id='TREE_ROOT', sha1=None, len=None)
358
1125
>>> '123' in inv
360
1127
>>> '456' in inv
363
return file_id in self._byid
1130
return (file_id in self._byid)
366
1132
def __getitem__(self, file_id):
367
1133
"""Return the entry for given file_id.
369
1135
>>> inv = Inventory()
370
>>> inv.add(InventoryEntry('123123', 'hello.c', 'file', ROOT_ID))
1136
>>> inv.add(InventoryFile('123123', 'hello.c', ROOT_ID))
1137
InventoryFile('123123', 'hello.c', parent_id='TREE_ROOT', sha1=None, len=None)
371
1138
>>> inv['123123'].name
375
1142
return self._byid[file_id]
376
1143
except KeyError:
378
raise BzrError("can't look up file_id None")
380
raise BzrError("file_id {%s} not in inventory" % file_id)
1144
# really we're passing an inventory, not a tree...
1145
raise errors.NoSuchId(self, file_id)
1147
def get_file_kind(self, file_id):
1148
return self._byid[file_id].kind
383
1150
def get_child(self, parent_id, filename):
384
1151
return self[parent_id].children.get(filename)
1153
def _add_child(self, entry):
1154
"""Add an entry to the inventory, without adding it to its parent"""
1155
if entry.file_id in self._byid:
1156
raise BzrError("inventory already contains entry with id {%s}" %
1158
self._byid[entry.file_id] = entry
1159
for child in getattr(entry, 'children', {}).itervalues():
1160
self._add_child(child)
387
1163
def add(self, entry):
388
1164
"""Add entry to inventory.
390
1166
To add a file to a branch ready to be committed, use Branch.add,
1169
Returns the new entry object.
392
1171
if entry.file_id in self._byid:
393
bailout("inventory already contains entry with id {%s}" % entry.file_id)
396
parent = self._byid[entry.parent_id]
398
bailout("parent_id {%s} not in inventory" % entry.parent_id)
400
if parent.children.has_key(entry.name):
401
bailout("%s is already versioned" %
402
appendpath(self.id2path(parent.file_id), entry.name))
404
self._byid[entry.file_id] = entry
405
parent.children[entry.name] = entry
408
def add_path(self, relpath, kind, file_id=None):
1172
raise errors.DuplicateFileId(entry.file_id,
1173
self._byid[entry.file_id])
1175
if entry.parent_id is None:
1176
assert self.root is None and len(self._byid) == 0
1180
parent = self._byid[entry.parent_id]
1182
raise BzrError("parent_id {%s} not in inventory" %
1185
if entry.name in parent.children:
1186
raise BzrError("%s is already versioned" %
1187
osutils.pathjoin(self.id2path(parent.file_id),
1188
entry.name).encode('utf-8'))
1189
parent.children[entry.name] = entry
1190
return self._add_child(entry)
1192
def add_path(self, relpath, kind, file_id=None, parent_id=None):
409
1193
"""Add entry from a path.
411
The immediate parent must already be versioned"""
412
parts = bzrlib.osutils.splitpath(relpath)
1195
The immediate parent must already be versioned.
1197
Returns the new entry object."""
1199
parts = osutils.splitpath(relpath)
413
1201
if len(parts) == 0:
414
bailout("cannot re-add root of inventory")
417
file_id = bzrlib.branch.gen_file_id(relpath)
419
parent_id = self.path2id(parts[:-1])
420
assert parent_id != None
421
ie = InventoryEntry(file_id, parts[-1],
422
kind=kind, parent_id=parent_id)
1203
file_id = generate_ids.gen_root_id()
1204
self.root = InventoryDirectory(file_id, '', None)
1205
self._byid = {self.root.file_id: self.root}
1208
parent_path = parts[:-1]
1209
parent_id = self.path2id(parent_path)
1210
if parent_id is None:
1211
raise errors.NotVersionedError(path=parent_path)
1212
ie = make_entry(kind, parts[-1], parent_id, file_id)
423
1213
return self.add(ie)
426
1215
def __delitem__(self, file_id):
427
1216
"""Remove entry by id.
429
1218
>>> inv = Inventory()
430
>>> inv.add(InventoryEntry('123', 'foo.c', 'file', ROOT_ID))
1219
>>> inv.add(InventoryFile('123', 'foo.c', ROOT_ID))
1220
InventoryFile('123', 'foo.c', parent_id='TREE_ROOT', sha1=None, len=None)
431
1221
>>> '123' in inv
433
1223
>>> del inv['123']
added
removed
bzrlib/inventory.py
