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# Copyright (C) 2005, 2006 Canonical Ltd
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# -*- coding: UTF-8 -*-
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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# FIXME: This refactoring of the workingtree code doesn't seem to keep
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# the WorkingTree's copy of the inventory in sync with the branch. The
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# branch modifies its working inventory when it does a commit to make
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# missing files permanently removed.
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# TODO: Maybe also keep the full path of the entry, and the children?
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# But those depend on its position within a particular inventory, and
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# it would be nice not to need to hold the backpointer here.
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# This should really be an id randomly assigned when the tree is
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# created, but it's not for now.
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from bzrlib.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.trace import mutter
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class InventoryEntry(object):
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"""Inventories map files to their name in a revision."""
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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 osutils import uuid, quotefn, splitpath, joinpath, appendpath
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from trace import mutter
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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: 'src', 1: 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('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))
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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', 'root_directory')
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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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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 = 'root_directory'
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self.parent_id = None
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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"""
578
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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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):
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"""See InventoryEntry.detect_changes."""
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assert self.text_sha1 is not None
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assert old_entry.text_sha1 is not None
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text_modified = (self.text_sha1 != old_entry.text_sha1)
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meta_modified = (self.executable != old_entry.executable)
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return text_modified, meta_modified
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def _diff(self, text_diff, from_label, tree, to_label, to_entry, to_tree,
627
output_to, reverse=False):
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"""See InventoryEntry._diff."""
630
from_text = tree.get_file(self.file_id).readlines()
632
to_text = to_tree.get_file(to_entry.file_id).readlines()
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text_diff(from_label, from_text,
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to_label, to_text, output_to)
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text_diff(to_label, to_text,
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from_label, from_text, output_to)
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label_pair = (to_label, from_label)
645
label_pair = (from_label, to_label)
646
print >> output_to, "Binary files %s and %s differ" % label_pair
649
"""See InventoryEntry.has_text."""
652
def __init__(self, file_id, name, parent_id):
653
super(InventoryFile, self).__init__(file_id, name, parent_id)
656
def kind_character(self):
657
"""See InventoryEntry.kind_character."""
660
def _put_in_tar(self, item, tree):
661
"""See InventoryEntry._put_in_tar."""
662
item.type = tarfile.REGTYPE
663
fileobj = tree.get_file(self.file_id)
664
item.size = self.text_size
665
if tree.is_executable(self.file_id):
671
def _put_on_disk(self, fullpath, tree):
672
"""See InventoryEntry._put_on_disk."""
673
pumpfile(tree.get_file(self.file_id), file(fullpath, 'wb'))
674
if tree.is_executable(self.file_id):
675
os.chmod(fullpath, 0755)
677
def _read_tree_state(self, path, work_tree):
678
"""See InventoryEntry._read_tree_state."""
679
self.text_sha1 = work_tree.get_file_sha1(self.file_id, path=path)
680
# FIXME: 20050930 probe for the text size when getting sha1
681
# in _read_tree_state
682
self.executable = work_tree.is_executable(self.file_id, path=path)
684
135
def __repr__(self):
685
return ("%s(%r, %r, parent_id=%r, sha1=%r, len=%s)"
136
return ("%s(%r, %r, kind=%r, parent_id=%r)"
686
137
% (self.__class__.__name__,
693
def _forget_tree_state(self):
694
self.text_sha1 = None
696
def _snapshot_text(self, file_parents, work_tree, commit_builder):
697
"""See InventoryEntry._snapshot_text."""
698
def get_content_byte_lines():
699
return work_tree.get_file(self.file_id).readlines()
700
self.text_sha1, self.text_size = commit_builder.modified_file_text(
701
self.file_id, file_parents, get_content_byte_lines, self.text_sha1, self.text_size)
703
def _unchanged(self, previous_ie):
704
"""See InventoryEntry._unchanged."""
705
compatible = super(InventoryFile, self)._unchanged(previous_ie)
706
if self.text_sha1 != previous_ie.text_sha1:
709
# FIXME: 20050930 probe for the text size when getting sha1
710
# in _read_tree_state
711
self.text_size = previous_ie.text_size
712
if self.executable != previous_ie.executable:
717
class InventoryLink(InventoryEntry):
718
"""A file in an inventory."""
720
__slots__ = ['text_sha1', 'text_size', 'file_id', 'name', 'kind',
721
'text_id', 'parent_id', 'children', 'executable',
722
'revision', 'symlink_target']
724
def _check(self, checker, rev_id, tree):
725
"""See InventoryEntry._check"""
726
if self.text_sha1 is not None or self.text_size is not None or self.text_id is not None:
727
raise BzrCheckError('symlink {%s} has text in revision {%s}'
728
% (self.file_id, rev_id))
729
if self.symlink_target is None:
730
raise BzrCheckError('symlink {%s} has no target in revision {%s}'
731
% (self.file_id, rev_id))
734
other = InventoryLink(self.file_id, self.name, self.parent_id)
735
other.symlink_target = self.symlink_target
736
other.revision = self.revision
739
def detect_changes(self, old_entry):
740
"""See InventoryEntry.detect_changes."""
741
# FIXME: which _modified field should we use ? RBC 20051003
742
text_modified = (self.symlink_target != old_entry.symlink_target)
744
mutter(" symlink target changed")
745
meta_modified = False
746
return text_modified, meta_modified
748
def _diff(self, text_diff, from_label, tree, to_label, to_entry, to_tree,
749
output_to, reverse=False):
750
"""See InventoryEntry._diff."""
751
from_text = self.symlink_target
752
if to_entry is not None:
753
to_text = to_entry.symlink_target
758
print >>output_to, '=== target changed %r => %r' % (from_text, to_text)
761
print >>output_to, '=== target was %r' % self.symlink_target
763
print >>output_to, '=== target is %r' % self.symlink_target
765
def __init__(self, file_id, name, parent_id):
766
super(InventoryLink, self).__init__(file_id, name, parent_id)
767
self.kind = 'symlink'
769
def kind_character(self):
770
"""See InventoryEntry.kind_character."""
773
def _put_in_tar(self, item, tree):
774
"""See InventoryEntry._put_in_tar."""
775
item.type = tarfile.SYMTYPE
779
item.linkname = self.symlink_target
782
def _put_on_disk(self, fullpath, tree):
783
"""See InventoryEntry._put_on_disk."""
785
os.symlink(self.symlink_target, fullpath)
787
raise BzrError("Failed to create symlink %r -> %r, error: %s" % (fullpath, self.symlink_target, e))
789
def _read_tree_state(self, path, work_tree):
790
"""See InventoryEntry._read_tree_state."""
791
self.symlink_target = work_tree.get_symlink_target(self.file_id)
793
def _forget_tree_state(self):
794
self.symlink_target = None
796
def _unchanged(self, previous_ie):
797
"""See InventoryEntry._unchanged."""
798
compatible = super(InventoryLink, self)._unchanged(previous_ie)
799
if self.symlink_target != previous_ie.symlink_target:
803
def _snapshot_text(self, file_parents, work_tree, commit_builder):
804
"""See InventoryEntry._snapshot_text."""
805
commit_builder.modified_link(
806
self.file_id, file_parents, self.symlink_target)
809
class Inventory(object):
144
def to_element(self):
145
"""Convert to XML element"""
148
e.set('name', self.name)
149
e.set('file_id', self.file_id)
150
e.set('kind', self.kind)
152
if self.text_size is not None:
153
e.set('text_size', '%d' % self.text_size)
155
for f in ['text_id', 'text_sha1', 'parent_id']:
165
def from_element(cls, elt):
166
assert elt.tag == 'entry'
167
self = cls(elt.get('file_id'), elt.get('name'), elt.get('kind'))
168
self.text_id = elt.get('text_id')
169
self.text_sha1 = elt.get('text_sha1')
170
self.parent_id = elt.get('parent_id')
172
## mutter("read inventoryentry: %r" % (elt.attrib))
174
v = elt.get('text_size')
175
self.text_size = v and int(v)
180
from_element = classmethod(from_element)
182
def __cmp__(self, other):
185
if not isinstance(other, InventoryEntry):
186
return NotImplemented
188
return cmp(self.file_id, other.file_id) \
189
or cmp(self.name, other.name) \
190
or cmp(self.text_sha1, other.text_sha1) \
191
or cmp(self.text_size, other.text_size) \
192
or cmp(self.text_id, other.text_id) \
193
or cmp(self.parent_id, other.parent_id) \
194
or cmp(self.kind, other.kind)
198
class Inventory(XMLMixin):
810
199
"""Inventory of versioned files in a tree.
812
This describes which file_id is present at each point in the tree,
813
and possibly the SHA-1 or other information about the file.
814
Entries can be looked up either by path or by file_id.
201
An Inventory acts like a set of InventoryEntry items. You can
202
also look files up by their file_id or name.
204
May be read from and written to a metadata file in a tree. To
205
manipulate the inventory (for example to add a file), it is read
206
in, modified, and then written back out.
816
208
The inventory represents a typical unix file tree, with
817
209
directories containing files and subdirectories. We never store
839
236
May also look up by name:
841
238
>>> [x[0] for x in inv.iter_entries()]
843
>>> inv = Inventory('TREE_ROOT-12345678-12345678')
844
>>> inv.add(InventoryFile('123-123', 'hello.c', ROOT_ID))
845
InventoryFile('123-123', 'hello.c', parent_id='TREE_ROOT-12345678-12345678', sha1=None, len=None)
241
>>> inv.write_xml(sys.stdout)
243
<entry file_id="123-123" kind="file" name="hello.c" />
847
def __init__(self, root_id=ROOT_ID, revision_id=None):
248
## TODO: Clear up handling of files in subdirectories; we probably
249
## do want to be able to just look them up by name but this
250
## probably means gradually walking down the path, looking up as we go.
252
## TODO: Make sure only canonical filenames are stored.
254
## TODO: Do something sensible about the possible collisions on
255
## case-losing filesystems. Perhaps we should just always forbid
258
## _tree should probably just be stored as
259
## InventoryEntry._children on each directory.
848
262
"""Create or read an inventory.
850
264
If a working directory is specified, the inventory is read
851
265
from there. If the file is specified, read from that. If not,
852
266
the inventory is created empty.
854
The inventory is created with a default root directory, with
857
# We are letting Branch.create() create a unique inventory
858
# root id. Rather than generating a random one here.
860
# root_id = bzrlib.branch.gen_file_id('TREE_ROOT')
861
self.root = RootEntry(root_id)
862
# FIXME: this isn't ever used, changing it to self.revision may break
863
# things. TODO make everything use self.revision_id
864
self.revision_id = revision_id
865
self._byid = {self.root.file_id: self.root}
868
# TODO: jam 20051218 Should copy also copy the revision_id?
869
other = Inventory(self.root.file_id)
870
# copy recursively so we know directories will be added before
871
# their children. There are more efficient ways than this...
872
for path, entry in self.iter_entries():
873
if entry == self.root:
875
other.add(entry.copy())
270
# _tree is indexed by parent_id; at each level a map from name
271
# to ie. The None entry is the root.
272
self._tree = {None: {}}
878
275
def __iter__(self):
879
276
return iter(self._byid)
881
279
def __len__(self):
882
280
"""Returns number of entries."""
883
281
return len(self._byid)
885
def iter_entries(self, from_dir=None):
284
def iter_entries(self, parent_id=None):
886
285
"""Return (path, entry) pairs, in order by name."""
890
elif isinstance(from_dir, basestring):
891
from_dir = self._byid[from_dir]
893
# unrolling the recursive called changed the time from
894
# 440ms/663ms (inline/total) to 116ms/116ms
895
children = from_dir.children.items()
897
children = collections.deque(children)
898
stack = [(u'', children)]
900
from_dir_relpath, children = stack[-1]
903
name, ie = children.popleft()
905
# we know that from_dir_relpath never ends in a slash
906
# and 'f' doesn't begin with one, we can do a string op, rather
907
# than the checks of pathjoin(), though this means that all paths
909
path = from_dir_relpath + '/' + name
913
if ie.kind != 'directory':
916
# But do this child first
917
new_children = ie.children.items()
919
new_children = collections.deque(new_children)
920
stack.append((path, new_children))
921
# Break out of inner loop, so that we start outer loop with child
924
# if we finished all children, pop it off the stack
927
def iter_entries_by_dir(self, from_dir=None):
928
"""Iterate over the entries in a directory first order.
930
This returns all entries for a directory before returning
931
the entries for children of a directory. This is not
932
lexicographically sorted order, and is a hybrid between
933
depth-first and breadth-first.
935
:return: This yields (path, entry) pairs
937
# TODO? Perhaps this should return the from_dir so that the root is
938
# yielded? or maybe an option?
942
elif isinstance(from_dir, basestring):
943
from_dir = self._byid[from_dir]
945
stack = [(u'', from_dir)]
947
cur_relpath, cur_dir = stack.pop()
950
for child_name, child_ie in sorted(cur_dir.children.iteritems()):
952
child_relpath = cur_relpath + child_name
954
yield child_relpath, child_ie
956
if child_ie.kind == 'directory':
957
child_dirs.append((child_relpath+'/', child_ie))
958
stack.extend(reversed(child_dirs))
961
"""Return list of (path, ie) for all entries except the root.
963
This may be faster than iter_entries.
966
def descend(dir_ie, dir_path):
967
kids = dir_ie.children.items()
969
for name, ie in kids:
970
child_path = pathjoin(dir_path, name)
971
accum.append((child_path, ie))
972
if ie.kind == 'directory':
973
descend(ie, child_path)
975
descend(self.root, u'')
978
def directories(self):
979
"""Return (path, entry) pairs for all directories, including the root.
982
def descend(parent_ie, parent_path):
983
accum.append((parent_path, parent_ie))
985
kids = [(ie.name, ie) for ie in parent_ie.children.itervalues() if ie.kind == 'directory']
988
for name, child_ie in kids:
989
child_path = pathjoin(parent_path, name)
990
descend(child_ie, child_path)
991
descend(self.root, u'')
286
kids = self._tree[parent_id].items()
288
for name, ie in kids:
290
if ie.kind == 'directory':
291
for cn, cie in self.iter_entries(parent_id=ie.file_id):
292
yield joinpath([name, cn]), cie
295
def directories(self, include_root=True):
296
"""Return (path, entry) pairs for all directories.
300
for path, entry in self.iter_entries():
301
if entry.kind == 'directory':
306
def children(self, parent_id):
307
"""Return entries that are direct children of parent_id."""
308
return self._tree[parent_id]
312
# TODO: return all paths and entries
994
315
def __contains__(self, file_id):
995
316
"""True if this entry contains a file with given id.
997
318
>>> inv = Inventory()
998
>>> inv.add(InventoryFile('123', 'foo.c', ROOT_ID))
999
InventoryFile('123', 'foo.c', parent_id='TREE_ROOT', sha1=None, len=None)
319
>>> inv.add(InventoryEntry('123', 'foo.c'))
1000
320
>>> '123' in inv
1002
322
>>> '456' in inv
added
removed
bzrlib/inventory.py
