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# Copyright (C) 2005, 2006 Canonical Ltd
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# (C) 2005 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 warnings import warn
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"""Inventories map files to their name in a revision."""
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# TODO: Maybe store inventory_id in the file? Not really needed.
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__copyright__ = "Copyright (C) 2005 Canonical Ltd."
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__author__ = "Martin Pool <mbp@canonical.com>"
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import sys, os.path, types
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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
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from bzrlib import errors, osutils
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from bzrlib.osutils import (pumpfile, quotefn, splitpath, joinpath,
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pathjoin, sha_strings)
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from bzrlib.errors import (NotVersionedError, InvalidEntryName,
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BzrError, BzrCheckError, BinaryFile)
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from bzrlib.osutils import uuid, quotefn, splitpath, joinpath, appendpath
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from bzrlib.trace import mutter
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class InventoryEntry(object):
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class InventoryEntry(XMLMixin):
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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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* *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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>>> i = Inventory()
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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: pathjoin('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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>>> i.add(InventoryEntry('123', 'src', kind='directory'))
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>>> i.add(InventoryEntry('2323', 'hello.c', parent_id='123'))
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>>> for j in i.iter_entries():
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(True, InventoryDirectory('TREE_ROOT', '', 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('2323', 'bye.c', '123'))
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('src', InventoryEntry('123', 'src', kind='directory', parent_id=None))
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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', parent_id='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(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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BzrError: ('inventory already contains entry with id {2323}', [])
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>>> i.add(InventoryEntry('2324', 'bye.c', parent_id='123'))
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>>> i.add(InventoryEntry('2325', 'wibble', parent_id='123', kind='directory'))
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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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>>> i.add(InventoryEntry('2326', 'wibble.c', parent_id='2325'))
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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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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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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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# 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 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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def get_ancestors(weave, entry):
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return set(weave.get_ancestry(entry.revision))
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# revision:ie mapping for each ie found in previous_inventories.
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# revision:ie mapping with one revision for each head.
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# revision: ancestor list for each head
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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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# 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 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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heads[ie.revision] = ie
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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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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(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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def __init__(self, file_id, name, kind='file', 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 = InventoryEntry('123', 'hello.c')
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>>> e = InventoryFile('123', 'src/hello.c', ROOT_ID)
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>>> e = InventoryEntry('123', 'src/hello.c')
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Traceback (most recent call last):
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InvalidEntryName: Invalid entry name: src/hello.c
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BzrError: ("InventoryEntry name is not a simple filename: '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 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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if len(splitpath(name)) != 1:
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bailout('InventoryEntry name is not a simple filename: %r'
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self.file_id = file_id
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assert kind in ['file', 'directory']
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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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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 = 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'))
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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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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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# mutter('new parents of %s are %r', path, previous_entries)
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self._read_tree_state(path, work_tree)
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# TODO: Where should we determine whether to reuse a
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# previous revision id or create a new revision? 20060606
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if len(previous_entries) == 1:
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# cannot be unchanged unless there is only one parent file rev.
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parent_ie = previous_entries.values()[0]
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if self._unchanged(parent_ie):
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# mutter("found unchanged entry")
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self.revision = parent_ie.revision
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return self._snapshot_into_revision(revision, previous_entries,
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work_tree, commit_builder)
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def _snapshot_into_revision(self, revision, previous_entries, work_tree,
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"""Record this revision unconditionally into a store.
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The entry's last-changed revision property (`revision`) is updated to
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that of the new revision.
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:param revision: id of the new revision that is being recorded.
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:returns: String description of the commit (e.g. "merged", "modified"), etc.
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# mutter('new revision {%s} for {%s}', revision, self.file_id)
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self.revision = revision
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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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This default implementation simply adds an empty text.
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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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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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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']
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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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warn('RootEntry is deprecated as of bzr 0.10. Please use '
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'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']
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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']
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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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self.text_sha1 = None
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self.text_size = None
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if kind == 'directory':
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other = InventoryEntry(self.file_id, self.name, self.kind,
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self.text_id, self.parent_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):
626
"""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,
634
output_to, reverse=False):
635
"""See InventoryEntry._diff."""
637
from_text = tree.get_file(self.file_id).readlines()
639
to_text = to_tree.get_file(to_entry.file_id).readlines()
643
text_diff(from_label, from_text,
644
to_label, to_text, output_to)
646
text_diff(to_label, to_text,
647
from_label, from_text, output_to)
650
label_pair = (to_label, from_label)
652
label_pair = (from_label, to_label)
653
print >> output_to, "Binary files %s and %s differ" % label_pair
656
"""See InventoryEntry.has_text."""
659
def __init__(self, file_id, name, parent_id):
660
super(InventoryFile, self).__init__(file_id, name, parent_id)
663
def kind_character(self):
664
"""See InventoryEntry.kind_character."""
667
def _put_in_tar(self, item, tree):
668
"""See InventoryEntry._put_in_tar."""
669
item.type = tarfile.REGTYPE
670
fileobj = tree.get_file(self.file_id)
671
item.size = self.text_size
672
if tree.is_executable(self.file_id):
678
def _put_on_disk(self, fullpath, tree):
679
"""See InventoryEntry._put_on_disk."""
680
pumpfile(tree.get_file(self.file_id), file(fullpath, 'wb'))
681
if tree.is_executable(self.file_id):
682
os.chmod(fullpath, 0755)
684
def _read_tree_state(self, path, work_tree):
685
"""See InventoryEntry._read_tree_state."""
686
self.text_sha1 = work_tree.get_file_sha1(self.file_id, path=path)
687
# FIXME: 20050930 probe for the text size when getting sha1
688
# in _read_tree_state
689
self.executable = work_tree.is_executable(self.file_id, path=path)
691
139
def __repr__(self):
692
return ("%s(%r, %r, parent_id=%r, sha1=%r, len=%s)"
140
return ("%s(%r, %r, kind=%r, parent_id=%r)"
693
141
% (self.__class__.__name__,
700
def _forget_tree_state(self):
701
self.text_sha1 = None
703
def _snapshot_text(self, file_parents, work_tree, commit_builder):
704
"""See InventoryEntry._snapshot_text."""
705
def get_content_byte_lines():
706
return work_tree.get_file(self.file_id).readlines()
707
self.text_sha1, self.text_size = commit_builder.modified_file_text(
708
self.file_id, file_parents, get_content_byte_lines, self.text_sha1, self.text_size)
710
def _unchanged(self, previous_ie):
711
"""See InventoryEntry._unchanged."""
712
compatible = super(InventoryFile, self)._unchanged(previous_ie)
713
if self.text_sha1 != previous_ie.text_sha1:
716
# FIXME: 20050930 probe for the text size when getting sha1
717
# in _read_tree_state
718
self.text_size = previous_ie.text_size
719
if self.executable != previous_ie.executable:
724
class InventoryLink(InventoryEntry):
725
"""A file in an inventory."""
727
__slots__ = ['text_sha1', 'text_size', 'file_id', 'name', 'kind',
728
'text_id', 'parent_id', 'children', 'executable',
729
'revision', 'symlink_target']
731
def _check(self, checker, rev_id, tree):
732
"""See InventoryEntry._check"""
733
if self.text_sha1 is not None or self.text_size is not None or self.text_id is not None:
734
raise BzrCheckError('symlink {%s} has text in revision {%s}'
735
% (self.file_id, rev_id))
736
if self.symlink_target is None:
737
raise BzrCheckError('symlink {%s} has no target in revision {%s}'
738
% (self.file_id, rev_id))
741
other = InventoryLink(self.file_id, self.name, self.parent_id)
742
other.symlink_target = self.symlink_target
743
other.revision = self.revision
746
def detect_changes(self, old_entry):
747
"""See InventoryEntry.detect_changes."""
748
# FIXME: which _modified field should we use ? RBC 20051003
749
text_modified = (self.symlink_target != old_entry.symlink_target)
751
mutter(" symlink target changed")
752
meta_modified = False
753
return text_modified, meta_modified
755
def _diff(self, text_diff, from_label, tree, to_label, to_entry, to_tree,
756
output_to, reverse=False):
757
"""See InventoryEntry._diff."""
758
from_text = self.symlink_target
759
if to_entry is not None:
760
to_text = to_entry.symlink_target
765
print >>output_to, '=== target changed %r => %r' % (from_text, to_text)
768
print >>output_to, '=== target was %r' % self.symlink_target
770
print >>output_to, '=== target is %r' % self.symlink_target
772
def __init__(self, file_id, name, parent_id):
773
super(InventoryLink, self).__init__(file_id, name, parent_id)
774
self.kind = 'symlink'
776
def kind_character(self):
777
"""See InventoryEntry.kind_character."""
780
def _put_in_tar(self, item, tree):
781
"""See InventoryEntry._put_in_tar."""
782
item.type = tarfile.SYMTYPE
786
item.linkname = self.symlink_target
789
def _put_on_disk(self, fullpath, tree):
790
"""See InventoryEntry._put_on_disk."""
792
os.symlink(self.symlink_target, fullpath)
794
raise BzrError("Failed to create symlink %r -> %r, error: %s" % (fullpath, self.symlink_target, e))
796
def _read_tree_state(self, path, work_tree):
797
"""See InventoryEntry._read_tree_state."""
798
self.symlink_target = work_tree.get_symlink_target(self.file_id)
800
def _forget_tree_state(self):
801
self.symlink_target = None
803
def _unchanged(self, previous_ie):
804
"""See InventoryEntry._unchanged."""
805
compatible = super(InventoryLink, self)._unchanged(previous_ie)
806
if self.symlink_target != previous_ie.symlink_target:
810
def _snapshot_text(self, file_parents, work_tree, commit_builder):
811
"""See InventoryEntry._snapshot_text."""
812
commit_builder.modified_link(
813
self.file_id, file_parents, self.symlink_target)
816
class Inventory(object):
148
def to_element(self):
149
"""Convert to XML element"""
152
e.set('name', self.name)
153
e.set('file_id', self.file_id)
154
e.set('kind', self.kind)
156
if self.text_size is not None:
157
e.set('text_size', '%d' % self.text_size)
159
for f in ['text_id', 'text_sha1', 'parent_id']:
169
def from_element(cls, elt):
170
assert elt.tag == 'entry'
171
self = cls(elt.get('file_id'), elt.get('name'), elt.get('kind'))
172
self.text_id = elt.get('text_id')
173
self.text_sha1 = elt.get('text_sha1')
174
self.parent_id = elt.get('parent_id')
176
## mutter("read inventoryentry: %r" % (elt.attrib))
178
v = elt.get('text_size')
179
self.text_size = v and int(v)
184
from_element = classmethod(from_element)
186
def __cmp__(self, other):
189
if not isinstance(other, InventoryEntry):
190
return NotImplemented
192
return cmp(self.file_id, other.file_id) \
193
or cmp(self.name, other.name) \
194
or cmp(self.text_sha1, other.text_sha1) \
195
or cmp(self.text_size, other.text_size) \
196
or cmp(self.text_id, other.text_id) \
197
or cmp(self.parent_id, other.parent_id) \
198
or cmp(self.kind, other.kind)
202
class Inventory(XMLMixin):
817
203
"""Inventory of versioned files in a tree.
819
This describes which file_id is present at each point in the tree,
820
and possibly the SHA-1 or other information about the file.
821
Entries can be looked up either by path or by file_id.
205
An Inventory acts like a set of InventoryEntry items. You can
206
also look files up by their file_id or name.
208
May be read from and written to a metadata file in a tree. To
209
manipulate the inventory (for example to add a file), it is read
210
in, modified, and then written back out.
823
212
The inventory represents a typical unix file tree, with
824
213
directories containing files and subdirectories. We never store
846
237
May also look up by name:
848
239
>>> [x[0] for x in inv.iter_entries()]
850
>>> inv = Inventory('TREE_ROOT-12345678-12345678')
851
>>> inv.add(InventoryFile('123-123', 'hello.c', ROOT_ID))
852
InventoryFile('123-123', 'hello.c', parent_id='TREE_ROOT-12345678-12345678', sha1=None, len=None)
242
>>> inv.write_xml(sys.stdout)
244
<entry file_id="123-123" kind="file" name="hello.c" />
854
def __init__(self, root_id=ROOT_ID, revision_id=None):
249
## TODO: Make sure only canonical filenames are stored.
251
## TODO: Do something sensible about the possible collisions on
252
## case-losing filesystems. Perhaps we should just always forbid
255
## TODO: No special cases for root, rather just give it a file id
256
## like everything else.
258
## TODO: Probably change XML serialization to use nesting
855
261
"""Create or read an inventory.
857
263
If a working directory is specified, the inventory is read
858
264
from there. If the file is specified, read from that. If not,
859
265
the inventory is created empty.
861
The inventory is created with a default root directory, with
864
# We are letting Branch.create() create a unique inventory
865
# root id. Rather than generating a random one here.
867
# root_id = bzrlib.branch.gen_file_id('TREE_ROOT')
868
if root_id is not None:
869
self._set_root(InventoryDirectory(root_id, '', None))
873
# FIXME: this isn't ever used, changing it to self.revision may break
874
# things. TODO make everything use self.revision_id
875
self.revision_id = revision_id
877
def _set_root(self, ie):
879
self._byid = {self.root.file_id: self.root}
882
# TODO: jam 20051218 Should copy also copy the revision_id?
883
entries = self.iter_entries()
884
other = Inventory(entries.next()[1].file_id)
885
# copy recursively so we know directories will be added before
886
# their children. There are more efficient ways than this...
887
for path, entry in entries():
888
other.add(entry.copy())
267
self._root = InventoryEntry(None, '', kind='directory')
268
self._byid = {None: self._root}
891
271
def __iter__(self):
892
272
return iter(self._byid)
894
275
def __len__(self):
895
276
"""Returns number of entries."""
896
277
return len(self._byid)
898
def iter_entries(self, from_dir=None):
280
def iter_entries(self, parent_id=None):
899
281
"""Return (path, entry) pairs, in order by name."""
904
elif isinstance(from_dir, basestring):
905
from_dir = self._byid[from_dir]
907
# unrolling the recursive called changed the time from
908
# 440ms/663ms (inline/total) to 116ms/116ms
909
children = from_dir.children.items()
911
children = collections.deque(children)
912
stack = [(u'', children)]
914
from_dir_relpath, children = stack[-1]
917
name, ie = children.popleft()
919
# we know that from_dir_relpath never ends in a slash
920
# and 'f' doesn't begin with one, we can do a string op, rather
921
# than the checks of pathjoin(), though this means that all paths
923
path = from_dir_relpath + '/' + name
927
if ie.kind != 'directory':
930
# But do this child first
931
new_children = ie.children.items()
933
new_children = collections.deque(new_children)
934
stack.append((path, new_children))
935
# Break out of inner loop, so that we start outer loop with child
938
# if we finished all children, pop it off the stack
941
def iter_entries_by_dir(self, from_dir=None):
942
"""Iterate over the entries in a directory first order.
944
This returns all entries for a directory before returning
945
the entries for children of a directory. This is not
946
lexicographically sorted order, and is a hybrid between
947
depth-first and breadth-first.
949
:return: This yields (path, entry) pairs
951
# TODO? Perhaps this should return the from_dir so that the root is
952
# yielded? or maybe an option?
957
elif isinstance(from_dir, basestring):
958
from_dir = self._byid[from_dir]
960
stack = [(u'', from_dir)]
962
cur_relpath, cur_dir = stack.pop()
965
for child_name, child_ie in sorted(cur_dir.children.iteritems()):
967
child_relpath = cur_relpath + child_name
969
yield child_relpath, child_ie
971
if child_ie.kind == 'directory':
972
child_dirs.append((child_relpath+'/', child_ie))
973
stack.extend(reversed(child_dirs))
976
"""Return list of (path, ie) for all entries except the root.
978
This may be faster than iter_entries.
981
def descend(dir_ie, dir_path):
982
kids = dir_ie.children.items()
984
for name, ie in kids:
985
child_path = pathjoin(dir_path, name)
986
accum.append((child_path, ie))
987
if ie.kind == 'directory':
988
descend(ie, child_path)
990
descend(self.root, u'')
993
def directories(self):
994
"""Return (path, entry) pairs for all directories, including the root.
997
def descend(parent_ie, parent_path):
998
accum.append((parent_path, parent_ie))
1000
kids = [(ie.name, ie) for ie in parent_ie.children.itervalues() if ie.kind == 'directory']
1003
for name, child_ie in kids:
1004
child_path = pathjoin(parent_path, name)
1005
descend(child_ie, child_path)
1006
descend(self.root, u'')
282
kids = self[parent_id].children.items()
284
for name, ie in kids:
286
if ie.kind == 'directory':
287
for cn, cie in self.iter_entries(parent_id=ie.file_id):
288
yield joinpath([name, cn]), cie
291
def directories(self, include_root=True):
292
"""Return (path, entry) pairs for all directories.
296
for path, entry in self.iter_entries():
297
if entry.kind == 'directory':
1009
302
def __contains__(self, file_id):
1010
303
"""True if this entry contains a file with given id.
1012
305
>>> inv = Inventory()
1013
>>> inv.add(InventoryFile('123', 'foo.c', ROOT_ID))
1014
InventoryFile('123', 'foo.c', parent_id='TREE_ROOT', sha1=None, len=None)
306
>>> inv.add(InventoryEntry('123', 'foo.c'))
1015
307
>>> '123' in inv
1017
309
>>> '456' in inv
1020
return (file_id in self._byid)
312
return file_id in self._byid
1022
315
def __getitem__(self, file_id):
1023
316
"""Return the entry for given file_id.
1025
318
>>> inv = Inventory()
1026
>>> inv.add(InventoryFile('123123', 'hello.c', ROOT_ID))
1027
InventoryFile('123123', 'hello.c', parent_id='TREE_ROOT', sha1=None, len=None)
319
>>> inv.add(InventoryEntry('123123', 'hello.c'))
1028
320
>>> inv['123123'].name
1032
return self._byid[file_id]
1035
raise BzrError("can't look up file_id None")
1037
raise BzrError("file_id {%s} not in inventory" % file_id)
323
return self._byid[file_id]
1039
def get_file_kind(self, file_id):
1040
return self._byid[file_id].kind
1042
326
def get_child(self, parent_id, filename):
1043
return self[parent_id].children.get(filename)
327
if parent_id == None:
328
return self._root.children.get(filename)
330
return self[parent_id].children.get(filename)
1045
333
def add(self, entry):
1046
334
"""Add entry to inventory.
1048
336
To add a file to a branch ready to be committed, use Branch.add,
1051
Returns the new entry object.
1053
338
if entry.file_id in self._byid:
1054
raise BzrError("inventory already contains entry with id {%s}" % entry.file_id)
1056
if entry.parent_id is None:
1057
assert self.root is None and len(self._byid) == 0
1058
self._set_root(entry)
1060
if entry.parent_id == ROOT_ID:
1061
assert self.root is not None, self
1062
entry.parent_id = self.root.file_id
1065
parent = self._byid[entry.parent_id]
1067
raise BzrError("parent_id {%s} not in inventory" % entry.parent_id)
1069
if entry.name in parent.children:
1070
raise BzrError("%s is already versioned" %
1071
pathjoin(self.id2path(parent.file_id), entry.name))
339
bailout("inventory already contains entry with id {%s}" % entry.file_id)
341
parent = self._byid[entry.parent_id]
342
if parent.kind != 'directory':
343
bailout("attempt to add under non-directory {%s}" % parent.file_id)
345
if parent.children.has_key(entry.name):
346
bailout("%s is already versioned" %
347
appendpath(self.id2path(parent.file_id), entry.name))
1073
349
self._byid[entry.file_id] = entry
1074
350
parent.children[entry.name] = entry
1077
def add_path(self, relpath, kind, file_id=None, parent_id=None):
353
def add_path(self, relpath, kind, file_id=None):
1078
354
"""Add entry from a path.
1080
The immediate parent must already be versioned.
1082
Returns the new entry object."""
1084
parts = osutils.splitpath(relpath)
356
The immediate parent must already be versioned"""
357
parts = bzrlib.osutils.splitpath(relpath)
1086
358
if len(parts) == 0:
1088
file_id = bzrlib.workingtree.gen_root_id()
1089
self.root = InventoryDirectory(file_id, '', None)
1090
self._byid = {self.root.file_id: self.root}
1093
parent_path = parts[:-1]
1094
parent_id = self.path2id(parent_path)
1095
if parent_id is None:
1096
raise NotVersionedError(path=parent_path)
1097
ie = make_entry(kind, parts[-1], parent_id, file_id)
359
bailout("cannot re-add root of inventory")
362
file_id = bzrlib.branch.gen_file_id(relpath)
364
parent_id = self.path2id(parts[:-1])
365
ie = InventoryEntry(file_id, parts[-1],
366
kind=kind, parent_id=parent_id)
1098
367
return self.add(ie)
1100
370
def __delitem__(self, file_id):
1101
371
"""Remove entry by id.
1103
373
>>> inv = Inventory()
1104
>>> inv.add(InventoryFile('123', 'foo.c', ROOT_ID))
1105
InventoryFile('123', 'foo.c', parent_id='TREE_ROOT', sha1=None, len=None)
374
>>> inv.add(InventoryEntry('123', 'foo.c'))
1106
375
>>> '123' in inv
1108
377
>>> del inv['123']
added
removed
bzrlib/inventory.py
