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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 xml import XMLMixin
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from ElementTree import ElementTree, Element
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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):
628
"""See InventoryEntry._diff."""
630
from_text = tree.get_file(self.file_id).readlines()
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to_text = to_tree.get_file(to_entry.file_id).readlines()
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text_diff(from_label, from_text,
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to_label, to_text, output_to)
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text_diff(to_label, to_text,
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from_label, from_text, output_to)
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label_pair = (to_label, from_label)
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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
131
def __repr__(self):
685
return ("%s(%r, %r, parent_id=%r, sha1=%r, len=%s)"
132
return ("%s(%r, %r, kind=%r, parent_id=%r)"
686
133
% (self.__class__.__name__,
693
def _forget_tree_state(self):
694
self.text_sha1 = None
695
self.executable = None
697
def _snapshot_text(self, file_parents, work_tree, commit_builder):
698
"""See InventoryEntry._snapshot_text."""
699
def get_content_byte_lines():
700
return work_tree.get_file(self.file_id).readlines()
701
self.text_sha1, self.text_size = commit_builder.modified_file_text(
702
self.file_id, file_parents, get_content_byte_lines, self.text_sha1, self.text_size)
704
def _unchanged(self, previous_ie):
705
"""See InventoryEntry._unchanged."""
706
compatible = super(InventoryFile, self)._unchanged(previous_ie)
707
if self.text_sha1 != previous_ie.text_sha1:
710
# FIXME: 20050930 probe for the text size when getting sha1
711
# in _read_tree_state
712
self.text_size = previous_ie.text_size
713
if self.executable != previous_ie.executable:
718
class InventoryLink(InventoryEntry):
719
"""A file in an inventory."""
721
__slots__ = ['text_sha1', 'text_size', 'file_id', 'name', 'kind',
722
'text_id', 'parent_id', 'children', 'executable',
723
'revision', 'symlink_target']
725
def _check(self, checker, rev_id, tree):
726
"""See InventoryEntry._check"""
727
if self.text_sha1 is not None or self.text_size is not None or self.text_id is not None:
728
raise BzrCheckError('symlink {%s} has text in revision {%s}'
729
% (self.file_id, rev_id))
730
if self.symlink_target is None:
731
raise BzrCheckError('symlink {%s} has no target in revision {%s}'
732
% (self.file_id, rev_id))
735
other = InventoryLink(self.file_id, self.name, self.parent_id)
736
other.symlink_target = self.symlink_target
737
other.revision = self.revision
740
def detect_changes(self, old_entry):
741
"""See InventoryEntry.detect_changes."""
742
# FIXME: which _modified field should we use ? RBC 20051003
743
text_modified = (self.symlink_target != old_entry.symlink_target)
745
mutter(" symlink target changed")
746
meta_modified = False
747
return text_modified, meta_modified
749
def _diff(self, text_diff, from_label, tree, to_label, to_entry, to_tree,
750
output_to, reverse=False):
751
"""See InventoryEntry._diff."""
752
from_text = self.symlink_target
753
if to_entry is not None:
754
to_text = to_entry.symlink_target
759
print >>output_to, '=== target changed %r => %r' % (from_text, to_text)
762
print >>output_to, '=== target was %r' % self.symlink_target
764
print >>output_to, '=== target is %r' % self.symlink_target
766
def __init__(self, file_id, name, parent_id):
767
super(InventoryLink, self).__init__(file_id, name, parent_id)
768
self.kind = 'symlink'
770
def kind_character(self):
771
"""See InventoryEntry.kind_character."""
774
def _put_in_tar(self, item, tree):
775
"""See InventoryEntry._put_in_tar."""
776
item.type = tarfile.SYMTYPE
780
item.linkname = self.symlink_target
783
def _put_on_disk(self, fullpath, tree):
784
"""See InventoryEntry._put_on_disk."""
786
os.symlink(self.symlink_target, fullpath)
788
raise BzrError("Failed to create symlink %r -> %r, error: %s" % (fullpath, self.symlink_target, e))
790
def _read_tree_state(self, path, work_tree):
791
"""See InventoryEntry._read_tree_state."""
792
self.symlink_target = work_tree.get_symlink_target(self.file_id)
794
def _forget_tree_state(self):
795
self.symlink_target = None
797
def _unchanged(self, previous_ie):
798
"""See InventoryEntry._unchanged."""
799
compatible = super(InventoryLink, self)._unchanged(previous_ie)
800
if self.symlink_target != previous_ie.symlink_target:
804
def _snapshot_text(self, file_parents, work_tree, commit_builder):
805
"""See InventoryEntry._snapshot_text."""
806
commit_builder.modified_link(
807
self.file_id, file_parents, self.symlink_target)
810
class Inventory(object):
140
def to_element(self):
141
"""Convert to XML element"""
144
e.set('name', self.name)
145
e.set('file_id', self.file_id)
146
e.set('kind', self.kind)
148
if self.text_size is not None:
149
e.set('text_size', '%d' % self.text_size)
151
for f in ['text_id', 'text_sha1', 'parent_id']:
161
def from_element(cls, elt):
162
assert elt.tag == 'entry'
163
self = cls(elt.get('file_id'), elt.get('name'), elt.get('kind'))
164
self.text_id = elt.get('text_id')
165
self.text_sha1 = elt.get('text_sha1')
166
self.parent_id = elt.get('parent_id')
168
## mutter("read inventoryentry: %r" % (elt.attrib))
170
v = elt.get('text_size')
171
self.text_size = v and int(v)
176
from_element = classmethod(from_element)
178
def __cmp__(self, other):
181
if not isinstance(other, InventoryEntry):
182
return NotImplemented
184
return cmp(self.file_id, other.file_id) \
185
or cmp(self.name, other.name) \
186
or cmp(self.text_sha1, other.text_sha1) \
187
or cmp(self.text_size, other.text_size) \
188
or cmp(self.text_id, other.text_id) \
189
or cmp(self.parent_id, other.parent_id) \
190
or cmp(self.kind, other.kind)
194
class Inventory(XMLMixin):
811
195
"""Inventory of versioned files in a tree.
813
This describes which file_id is present at each point in the tree,
814
and possibly the SHA-1 or other information about the file.
815
Entries can be looked up either by path or by file_id.
197
An Inventory acts like a set of InventoryEntry items. You can
198
also look files up by their file_id or name.
200
May be read from and written to a metadata file in a tree. To
201
manipulate the inventory (for example to add a file), it is read
202
in, modified, and then written back out.
817
204
The inventory represents a typical unix file tree, with
818
205
directories containing files and subdirectories. We never store
840
232
May also look up by name:
842
234
>>> [x[0] for x in inv.iter_entries()]
844
>>> inv = Inventory('TREE_ROOT-12345678-12345678')
845
>>> inv.add(InventoryFile('123-123', 'hello.c', ROOT_ID))
846
InventoryFile('123-123', 'hello.c', parent_id='TREE_ROOT-12345678-12345678', sha1=None, len=None)
237
>>> inv.write_xml(sys.stdout)
239
<entry file_id="123-123" kind="file" name="hello.c" />
848
def __init__(self, root_id=ROOT_ID, revision_id=None):
244
## TODO: Clear up handling of files in subdirectories; we probably
245
## do want to be able to just look them up by name but this
246
## probably means gradually walking down the path, looking up as we go.
248
## TODO: Make sure only canonical filenames are stored.
250
## TODO: Do something sensible about the possible collisions on
251
## case-losing filesystems. Perhaps we should just always forbid
254
## _tree should probably just be stored as
255
## InventoryEntry._children on each directory.
849
258
"""Create or read an inventory.
851
260
If a working directory is specified, the inventory is read
852
261
from there. If the file is specified, read from that. If not,
853
262
the inventory is created empty.
855
The inventory is created with a default root directory, with
858
# We are letting Branch.create() create a unique inventory
859
# root id. Rather than generating a random one here.
861
# root_id = bzrlib.branch.gen_file_id('TREE_ROOT')
862
self.root = RootEntry(root_id)
863
# FIXME: this isn't ever used, changing it to self.revision may break
864
# things. TODO make everything use self.revision_id
865
self.revision_id = revision_id
866
self._byid = {self.root.file_id: self.root}
869
# TODO: jam 20051218 Should copy also copy the revision_id?
870
other = Inventory(self.root.file_id)
871
# copy recursively so we know directories will be added before
872
# their children. There are more efficient ways than this...
873
for path, entry in self.iter_entries():
874
if entry == self.root:
876
other.add(entry.copy())
266
# _tree is indexed by parent_id; at each level a map from name
267
# to ie. The None entry is the root.
268
self._tree = {None: {}}
879
271
def __iter__(self):
880
272
return iter(self._byid)
882
275
def __len__(self):
883
276
"""Returns number of entries."""
884
277
return len(self._byid)
886
def iter_entries(self, from_dir=None):
280
def iter_entries(self, parent_id=None):
887
281
"""Return (path, entry) pairs, in order by name."""
891
elif isinstance(from_dir, basestring):
892
from_dir = self._byid[from_dir]
894
# unrolling the recursive called changed the time from
895
# 440ms/663ms (inline/total) to 116ms/116ms
896
children = from_dir.children.items()
898
children = collections.deque(children)
899
stack = [(u'', children)]
901
from_dir_relpath, children = stack[-1]
904
name, ie = children.popleft()
906
# we know that from_dir_relpath never ends in a slash
907
# and 'f' doesn't begin with one, we can do a string op, rather
908
# than the checks of pathjoin(), though this means that all paths
910
path = from_dir_relpath + '/' + name
914
if ie.kind != 'directory':
917
# But do this child first
918
new_children = ie.children.items()
920
new_children = collections.deque(new_children)
921
stack.append((path, new_children))
922
# Break out of inner loop, so that we start outer loop with child
925
# if we finished all children, pop it off the stack
928
def iter_entries_by_dir(self, from_dir=None):
929
"""Iterate over the entries in a directory first order.
931
This returns all entries for a directory before returning
932
the entries for children of a directory. This is not
933
lexicographically sorted order, and is a hybrid between
934
depth-first and breadth-first.
936
:return: This yields (path, entry) pairs
938
# TODO? Perhaps this should return the from_dir so that the root is
939
# yielded? or maybe an option?
943
elif isinstance(from_dir, basestring):
944
from_dir = self._byid[from_dir]
946
stack = [(u'', from_dir)]
948
cur_relpath, cur_dir = stack.pop()
951
for child_name, child_ie in sorted(cur_dir.children.iteritems()):
953
child_relpath = cur_relpath + child_name
955
yield child_relpath, child_ie
957
if child_ie.kind == 'directory':
958
child_dirs.append((child_relpath+'/', child_ie))
959
stack.extend(reversed(child_dirs))
962
"""Return list of (path, ie) for all entries except the root.
964
This may be faster than iter_entries.
967
def descend(dir_ie, dir_path):
968
kids = dir_ie.children.items()
970
for name, ie in kids:
971
child_path = pathjoin(dir_path, name)
972
accum.append((child_path, ie))
973
if ie.kind == 'directory':
974
descend(ie, child_path)
976
descend(self.root, u'')
979
def directories(self):
980
"""Return (path, entry) pairs for all directories, including the root.
983
def descend(parent_ie, parent_path):
984
accum.append((parent_path, parent_ie))
986
kids = [(ie.name, ie) for ie in parent_ie.children.itervalues() if ie.kind == 'directory']
989
for name, child_ie in kids:
990
child_path = pathjoin(parent_path, name)
991
descend(child_ie, child_path)
992
descend(self.root, u'')
282
kids = self._tree[parent_id].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':
302
def children(self, parent_id):
303
"""Return entries that are direct children of parent_id."""
304
return self._tree[parent_id]
308
# TODO: return all paths and entries
995
311
def __contains__(self, file_id):
996
312
"""True if this entry contains a file with given id.
998
314
>>> inv = Inventory()
999
>>> inv.add(InventoryFile('123', 'foo.c', ROOT_ID))
1000
InventoryFile('123', 'foo.c', parent_id='TREE_ROOT', sha1=None, len=None)
315
>>> inv.add(InventoryEntry('123', 'foo.c'))
1001
316
>>> '123' in inv
1003
318
>>> '456' in inv
added
removed
bzrlib/inventory.py
