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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.lazy_import import lazy_import
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lazy_import(globals(), """
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from bzrlib.errors import (
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from bzrlib.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 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: '', 1: 'src', 2: 'src/hello.c'}
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>>> for ix, j in enumerate(i.iter_entries()):
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... print (j[0] == shouldbe[ix], j[1])
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>>> i.add(InventoryEntry('123', 'src', kind='directory'))
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>>> i.add(InventoryEntry('2323', 'hello.c', parent_id='123'))
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>>> for j in i.iter_entries():
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(True, InventoryDirectory('TREE_ROOT', '', parent_id=None, revision=None))
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(True, InventoryDirectory('123', 'src', parent_id='TREE_ROOT', revision=None))
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(True, InventoryFile('2323', 'hello.c', parent_id='123', sha1=None, len=None))
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>>> i.add(InventoryFile('2323', 'bye.c', '123'))
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('src', InventoryEntry('123', 'src', kind='directory', parent_id=None))
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('src/hello.c', InventoryEntry('2323', 'hello.c', kind='file', parent_id='123'))
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>>> i.add(InventoryEntry('2323', 'bye.c', parent_id='123'))
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Traceback (most recent call last):
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BzrError: inventory already contains entry with id {2323}
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>>> i.add(InventoryFile('2324', 'bye.c', '123'))
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InventoryFile('2324', 'bye.c', parent_id='123', sha1=None, len=None)
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>>> i.add(InventoryDirectory('2325', 'wibble', '123'))
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InventoryDirectory('2325', 'wibble', parent_id='123', revision=None)
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BzrError: ('inventory already contains entry with id {2323}', [])
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>>> i.add(InventoryEntry('2324', 'bye.c', parent_id='123'))
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>>> i.add(InventoryEntry('2325', 'wibble', parent_id='123', kind='directory'))
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>>> i.path2id('src/wibble')
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>>> i.add(InventoryFile('2326', 'wibble.c', '2325'))
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InventoryFile('2326', 'wibble.c', parent_id='2325', sha1=None, len=None)
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>>> i.add(InventoryEntry('2326', 'wibble.c', parent_id='2325'))
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InventoryFile('2326', 'wibble.c', parent_id='2325', sha1=None, len=None)
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>>> for path, entry in i.iter_entries():
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... assert i.path2id(path)
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InventoryEntry('2326', 'wibble.c', kind='file', parent_id='2325')
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>>> for j in i.iter_entries():
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... assert i.path2id(j[0])
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src/wibble/wibble.c
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>>> i.id2path('2326')
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'src/wibble/wibble.c'
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:todo: Maybe also keep the full path of the entry, and the children?
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But those depend on its position within a particular inventory, and
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it would be nice not to need to hold the backpointer here.
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# Constants returned by describe_change()
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# TODO: These should probably move to some kind of FileChangeDescription
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# class; that's like what's inside a TreeDelta but we want to be able to
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# generate them just for one file at a time.
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MODIFIED_AND_RENAMED = 'modified and renamed'
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def detect_changes(self, old_entry):
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"""Return a (text_modified, meta_modified) from this to old_entry.
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_read_tree_state must have been called on self and old_entry prior to
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calling detect_changes.
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def diff(self, text_diff, from_label, tree, to_label, to_entry, to_tree,
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output_to, reverse=False):
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"""Perform a diff from this to to_entry.
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text_diff will be used for textual difference calculation.
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This is a template method, override _diff in child classes.
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self._read_tree_state(tree.id2path(self.file_id), tree)
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# cannot diff from one kind to another - you must do a removal
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# and an addif they do not match.
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assert self.kind == to_entry.kind
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to_entry._read_tree_state(to_tree.id2path(to_entry.file_id),
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self._diff(text_diff, from_label, tree, to_label, to_entry, to_tree,
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def _diff(self, text_diff, from_label, tree, to_label, to_entry, to_tree,
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output_to, reverse=False):
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"""Perform a diff between two entries of the same kind."""
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def find_previous_heads(self, previous_inventories,
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versioned_file_store,
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"""Return the revisions and entries that directly precede this.
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Returned as a map from revision to inventory entry.
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This is a map containing the file revisions in all parents
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for which the file exists, and its revision is not a parent of
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any other. If the file is new, the set will be empty.
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:param versioned_file_store: A store where ancestry data on this
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file id can be queried.
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:param transaction: The transaction that queries to the versioned
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file store should be completed under.
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:param entry_vf: The entry versioned file, if its already available.
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def get_ancestors(weave, entry):
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return set(weave.get_ancestry(entry.revision))
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# revision:ie mapping for each ie found in previous_inventories.
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# revision:ie mapping with one revision for each head.
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# revision: ancestor list for each head
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# identify candidate head revision ids.
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for inv in previous_inventories:
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if self.file_id in inv:
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ie = inv[self.file_id]
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assert ie.file_id == self.file_id
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if ie.revision in candidates:
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# same revision value in two different inventories:
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# correct possible inconsistencies:
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# * there was a bug in revision updates with 'x' bit
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if candidates[ie.revision].executable != ie.executable:
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candidates[ie.revision].executable = False
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ie.executable = False
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except AttributeError:
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# must now be the same.
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assert candidates[ie.revision] == ie
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# add this revision as a candidate.
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candidates[ie.revision] = ie
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# common case optimisation
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if len(candidates) == 1:
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# if there is only one candidate revision found
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# then we can opening the versioned file to access ancestry:
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# there cannot be any ancestors to eliminate when there is
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# only one revision available.
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heads[ie.revision] = ie
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# eliminate ancestors amongst the available candidates:
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# heads are those that are not an ancestor of any other candidate
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# - this provides convergence at a per-file level.
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for ie in candidates.values():
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# may be an ancestor of a known head:
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already_present = 0 != len(
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[head for head in heads
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if ie.revision in head_ancestors[head]])
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# an ancestor of an analyzed candidate.
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# not an ancestor of a known head:
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# load the versioned file for this file id if needed
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entry_vf = versioned_file_store.get_weave_or_empty(
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self.file_id, transaction)
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ancestors = get_ancestors(entry_vf, ie)
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# may knock something else out:
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check_heads = list(heads.keys())
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for head in check_heads:
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if head in ancestors:
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# this previously discovered 'head' is not
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# really a head - its an ancestor of the newly
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head_ancestors[ie.revision] = ancestors
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heads[ie.revision] = ie
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def get_tar_item(self, root, dp, now, tree):
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"""Get a tarfile item and a file stream for its content."""
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item = tarfile.TarInfo(osutils.pathjoin(root, dp).encode('utf8'))
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# TODO: would be cool to actually set it to the timestamp of the
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# revision it was last changed
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fileobj = self._put_in_tar(item, tree)
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"""Return true if the object this entry represents has textual data.
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Note that textual data includes binary content.
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Also note that all entries get weave files created for them.
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This attribute is primarily used when upgrading from old trees that
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did not have the weave index for all inventory entries.
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def __init__(self, file_id, name, parent_id, text_id=None):
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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 errors.InvalidEntryName(name=name)
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self.executable = False
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self.text_sha1 = None
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self.text_size = None
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if len(splitpath(name)) != 1:
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bailout('InventoryEntry name is not a simple filename: %r'
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self.file_id = file_id
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assert kind in ['file', 'directory']
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self.text_id = text_id
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self.parent_id = parent_id
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self.symlink_target = None
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def kind_character(self):
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"""Return a short kind indicator useful for appending to names."""
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raise BzrError('unknown kind %r' % self.kind)
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known_kinds = ('file', 'directory', 'symlink')
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def _put_in_tar(self, item, tree):
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"""populate item for stashing in a tar, and return the content stream.
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If no content is available, return None.
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raise BzrError("don't know how to export {%s} of kind %r" %
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(self.file_id, self.kind))
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def put_on_disk(self, dest, dp, tree):
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"""Create a representation of self on disk in the prefix dest.
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This is a template method - implement _put_on_disk in subclasses.
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fullpath = osutils.pathjoin(dest, dp)
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self._put_on_disk(fullpath, tree)
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# mutter(" export {%s} kind %s to %s", self.file_id,
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# self.kind, fullpath)
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def _put_on_disk(self, fullpath, tree):
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"""Put this entry onto disk at fullpath, from tree tree."""
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raise BzrError("don't know how to export {%s} of kind %r" % (self.file_id, self.kind))
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def sorted_children(self):
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return sorted(self.children.items())
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def versionable_kind(kind):
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return (kind in ('file', 'directory', 'symlink'))
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def check(self, checker, rev_id, inv, tree):
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"""Check this inventory entry is intact.
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This is a template method, override _check for kind specific
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:param checker: Check object providing context for the checks;
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can be used to find out what parts of the repository have already
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:param rev_id: Revision id from which this InventoryEntry was loaded.
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Not necessarily the last-changed revision for this file.
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:param inv: Inventory from which the entry was loaded.
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:param tree: RevisionTree for this entry.
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if self.parent_id is not None:
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if not inv.has_id(self.parent_id):
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raise BzrCheckError('missing parent {%s} in inventory for revision {%s}'
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% (self.parent_id, rev_id))
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self._check(checker, rev_id, tree)
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def _check(self, checker, rev_id, tree):
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"""Check this inventory entry for kind specific errors."""
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raise BzrCheckError('unknown entry kind %r in revision {%s}' %
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"""Clone this inventory entry."""
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raise NotImplementedError
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def describe_change(old_entry, new_entry):
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"""Describe the change between old_entry and this.
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This smells of being an InterInventoryEntry situation, but as its
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the first one, we're making it a static method for now.
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An entry with a different parent, or different name is considered
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to be renamed. Reparenting is an internal detail.
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Note that renaming the parent does not trigger a rename for the
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# TODO: Perhaps return an object rather than just a string
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if old_entry is new_entry:
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# also the case of both being None
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elif old_entry is None:
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elif new_entry is None:
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text_modified, meta_modified = new_entry.detect_changes(old_entry)
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if text_modified or meta_modified:
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# TODO 20060511 (mbp, rbc) factor out 'detect_rename' here.
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if old_entry.parent_id != new_entry.parent_id:
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elif old_entry.name != new_entry.name:
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if renamed and not modified:
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return InventoryEntry.RENAMED
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if modified and not renamed:
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if modified and renamed:
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return InventoryEntry.MODIFIED_AND_RENAMED
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return ("%s(%r, %r, parent_id=%r, revision=%r)"
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% (self.__class__.__name__,
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def snapshot(self, revision, path, previous_entries,
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work_tree, commit_builder):
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"""Make a snapshot of this entry which may or may not have changed.
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This means that all its fields are populated, that it has its
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text stored in the text store or weave.
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# mutter('new parents of %s are %r', path, previous_entries)
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self._read_tree_state(path, work_tree)
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# TODO: Where should we determine whether to reuse a
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# previous revision id or create a new revision? 20060606
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if len(previous_entries) == 1:
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# cannot be unchanged unless there is only one parent file rev.
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parent_ie = previous_entries.values()[0]
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if self._unchanged(parent_ie):
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# mutter("found unchanged entry")
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self.revision = parent_ie.revision
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return self._snapshot_into_revision(revision, previous_entries,
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work_tree, commit_builder)
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def _snapshot_into_revision(self, revision, previous_entries, work_tree,
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"""Record this revision unconditionally into a store.
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The entry's last-changed revision property (`revision`) is updated to
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that of the new revision.
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:param revision: id of the new revision that is being recorded.
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:returns: String description of the commit (e.g. "merged", "modified"), etc.
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# mutter('new revision {%s} for {%s}', revision, self.file_id)
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self.revision = revision
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self._snapshot_text(previous_entries, work_tree, commit_builder)
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def _snapshot_text(self, file_parents, work_tree, commit_builder):
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"""Record the 'text' of this entry, whatever form that takes.
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This default implementation simply adds an empty text.
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raise NotImplementedError(self._snapshot_text)
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def __eq__(self, other):
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if not isinstance(other, InventoryEntry):
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return NotImplemented
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return ((self.file_id == other.file_id)
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and (self.name == other.name)
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and (other.symlink_target == self.symlink_target)
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and (self.text_sha1 == other.text_sha1)
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and (self.text_size == other.text_size)
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and (self.text_id == other.text_id)
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and (self.parent_id == other.parent_id)
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and (self.kind == other.kind)
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and (self.revision == other.revision)
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and (self.executable == other.executable)
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def __ne__(self, other):
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return not (self == other)
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raise ValueError('not hashable')
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def _unchanged(self, previous_ie):
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"""Has this entry changed relative to previous_ie.
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This method should be overridden in child classes.
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# different inv parent
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if previous_ie.parent_id != self.parent_id:
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elif previous_ie.name != self.name:
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def _read_tree_state(self, path, work_tree):
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"""Populate fields in the inventory entry from the given tree.
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Note that this should be modified to be a noop on virtual trees
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as all entries created there are prepopulated.
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# TODO: Rather than running this manually, we should check the
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# working sha1 and other expensive properties when they're
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# first requested, or preload them if they're already known
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pass # nothing to do by default
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def _forget_tree_state(self):
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class RootEntry(InventoryEntry):
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__slots__ = ['text_sha1', 'text_size', 'file_id', 'name', 'kind',
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'text_id', 'parent_id', 'children', 'executable',
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'revision', 'symlink_target']
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def _check(self, checker, rev_id, tree):
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"""See InventoryEntry._check"""
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def __init__(self, file_id):
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self.file_id = file_id
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self.kind = 'directory'
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self.parent_id = None
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symbol_versioning.warn('RootEntry is deprecated as of bzr 0.10.'
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' Please use InventoryDirectory instead.',
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DeprecationWarning, stacklevel=2)
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def __eq__(self, other):
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if not isinstance(other, RootEntry):
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return NotImplemented
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return (self.file_id == other.file_id) \
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and (self.children == other.children)
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class InventoryDirectory(InventoryEntry):
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"""A directory in an inventory."""
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__slots__ = ['text_sha1', 'text_size', 'file_id', 'name', 'kind',
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'text_id', 'parent_id', 'children', 'executable',
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'revision', 'symlink_target']
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def _check(self, checker, rev_id, tree):
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"""See InventoryEntry._check"""
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if self.text_sha1 is not None or self.text_size is not None or self.text_id is not None:
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raise BzrCheckError('directory {%s} has text in revision {%s}'
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% (self.file_id, rev_id))
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other = InventoryDirectory(self.file_id, self.name, self.parent_id)
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other.revision = self.revision
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# note that children are *not* copied; they're pulled across when
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def __init__(self, file_id, name, parent_id):
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super(InventoryDirectory, self).__init__(file_id, name, parent_id)
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self.kind = 'directory'
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def kind_character(self):
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"""See InventoryEntry.kind_character."""
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def _put_in_tar(self, item, tree):
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"""See InventoryEntry._put_in_tar."""
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item.type = tarfile.DIRTYPE
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def _put_on_disk(self, fullpath, tree):
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"""See InventoryEntry._put_on_disk."""
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def _snapshot_text(self, file_parents, work_tree, commit_builder):
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"""See InventoryEntry._snapshot_text."""
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commit_builder.modified_directory(self.file_id, file_parents)
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class InventoryFile(InventoryEntry):
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"""A file in an inventory."""
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__slots__ = ['text_sha1', 'text_size', 'file_id', 'name', 'kind',
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'text_id', 'parent_id', 'children', 'executable',
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'revision', 'symlink_target']
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def _check(self, checker, tree_revision_id, tree):
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"""See InventoryEntry._check"""
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t = (self.file_id, self.revision)
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if t in checker.checked_texts:
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prev_sha = checker.checked_texts[t]
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if prev_sha != self.text_sha1:
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raise BzrCheckError('mismatched sha1 on {%s} in {%s}' %
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(self.file_id, tree_revision_id))
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checker.repeated_text_cnt += 1
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if self.file_id not in checker.checked_weaves:
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mutter('check weave {%s}', self.file_id)
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w = tree.get_weave(self.file_id)
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# Not passing a progress bar, because it creates a new
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# progress, which overwrites the current progress,
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# and doesn't look nice
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checker.checked_weaves[self.file_id] = True
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w = tree.get_weave(self.file_id)
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mutter('check version {%s} of {%s}', tree_revision_id, self.file_id)
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checker.checked_text_cnt += 1
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# We can't check the length, because Weave doesn't store that
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# information, and the whole point of looking at the weave's
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# sha1sum is that we don't have to extract the text.
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if self.text_sha1 != w.get_sha1(self.revision):
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raise BzrCheckError('text {%s} version {%s} wrong sha1'
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% (self.file_id, self.revision))
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checker.checked_texts[t] = self.text_sha1
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other = InventoryFile(self.file_id, self.name, self.parent_id)
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other.executable = self.executable
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other.text_id = self.text_id
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self.text_sha1 = None
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self.text_size = None
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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):
634
"""See InventoryEntry.detect_changes."""
635
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,
642
output_to, reverse=False):
643
"""See InventoryEntry._diff."""
645
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,
652
to_label, to_text, output_to)
654
text_diff(to_label, to_text,
655
from_label, from_text, output_to)
656
except errors.BinaryFile:
658
label_pair = (to_label, from_label)
660
label_pair = (from_label, to_label)
661
print >> output_to, "Binary files %s and %s differ" % label_pair
664
"""See InventoryEntry.has_text."""
667
def __init__(self, file_id, name, parent_id):
668
super(InventoryFile, self).__init__(file_id, name, parent_id)
671
def kind_character(self):
672
"""See InventoryEntry.kind_character."""
675
def _put_in_tar(self, item, tree):
676
"""See InventoryEntry._put_in_tar."""
677
item.type = tarfile.REGTYPE
678
fileobj = tree.get_file(self.file_id)
679
item.size = self.text_size
680
if tree.is_executable(self.file_id):
686
def _put_on_disk(self, fullpath, tree):
687
"""See InventoryEntry._put_on_disk."""
688
osutils.pumpfile(tree.get_file(self.file_id), file(fullpath, 'wb'))
689
if tree.is_executable(self.file_id):
690
os.chmod(fullpath, 0755)
692
def _read_tree_state(self, path, work_tree):
693
"""See InventoryEntry._read_tree_state."""
694
self.text_sha1 = work_tree.get_file_sha1(self.file_id, path=path)
695
# FIXME: 20050930 probe for the text size when getting sha1
696
# in _read_tree_state
697
self.executable = work_tree.is_executable(self.file_id, path=path)
699
135
def __repr__(self):
700
return ("%s(%r, %r, parent_id=%r, sha1=%r, len=%s)"
136
return ("%s(%r, %r, kind=%r, parent_id=%r)"
701
137
% (self.__class__.__name__,
708
def _forget_tree_state(self):
709
self.text_sha1 = None
711
def _snapshot_text(self, file_parents, work_tree, commit_builder):
712
"""See InventoryEntry._snapshot_text."""
713
def get_content_byte_lines():
714
return work_tree.get_file(self.file_id).readlines()
715
self.text_sha1, self.text_size = commit_builder.modified_file_text(
716
self.file_id, file_parents, get_content_byte_lines, self.text_sha1, self.text_size)
718
def _unchanged(self, previous_ie):
719
"""See InventoryEntry._unchanged."""
720
compatible = super(InventoryFile, self)._unchanged(previous_ie)
721
if self.text_sha1 != previous_ie.text_sha1:
724
# FIXME: 20050930 probe for the text size when getting sha1
725
# in _read_tree_state
726
self.text_size = previous_ie.text_size
727
if self.executable != previous_ie.executable:
732
class InventoryLink(InventoryEntry):
733
"""A file in an inventory."""
735
__slots__ = ['text_sha1', 'text_size', 'file_id', 'name', 'kind',
736
'text_id', 'parent_id', 'children', 'executable',
737
'revision', 'symlink_target']
739
def _check(self, checker, rev_id, tree):
740
"""See InventoryEntry._check"""
741
if self.text_sha1 is not None or self.text_size is not None or self.text_id is not None:
742
raise BzrCheckError('symlink {%s} has text in revision {%s}'
743
% (self.file_id, rev_id))
744
if self.symlink_target is None:
745
raise BzrCheckError('symlink {%s} has no target in revision {%s}'
746
% (self.file_id, rev_id))
749
other = InventoryLink(self.file_id, self.name, self.parent_id)
750
other.symlink_target = self.symlink_target
751
other.revision = self.revision
754
def detect_changes(self, old_entry):
755
"""See InventoryEntry.detect_changes."""
756
# FIXME: which _modified field should we use ? RBC 20051003
757
text_modified = (self.symlink_target != old_entry.symlink_target)
759
mutter(" symlink target changed")
760
meta_modified = False
761
return text_modified, meta_modified
763
def _diff(self, text_diff, from_label, tree, to_label, to_entry, to_tree,
764
output_to, reverse=False):
765
"""See InventoryEntry._diff."""
766
from_text = self.symlink_target
767
if to_entry is not None:
768
to_text = to_entry.symlink_target
773
print >>output_to, '=== target changed %r => %r' % (from_text, to_text)
776
print >>output_to, '=== target was %r' % self.symlink_target
778
print >>output_to, '=== target is %r' % self.symlink_target
780
def __init__(self, file_id, name, parent_id):
781
super(InventoryLink, self).__init__(file_id, name, parent_id)
782
self.kind = 'symlink'
784
def kind_character(self):
785
"""See InventoryEntry.kind_character."""
788
def _put_in_tar(self, item, tree):
789
"""See InventoryEntry._put_in_tar."""
790
item.type = tarfile.SYMTYPE
794
item.linkname = self.symlink_target
797
def _put_on_disk(self, fullpath, tree):
798
"""See InventoryEntry._put_on_disk."""
800
os.symlink(self.symlink_target, fullpath)
802
raise BzrError("Failed to create symlink %r -> %r, error: %s" % (fullpath, self.symlink_target, e))
804
def _read_tree_state(self, path, work_tree):
805
"""See InventoryEntry._read_tree_state."""
806
self.symlink_target = work_tree.get_symlink_target(self.file_id)
808
def _forget_tree_state(self):
809
self.symlink_target = None
811
def _unchanged(self, previous_ie):
812
"""See InventoryEntry._unchanged."""
813
compatible = super(InventoryLink, self)._unchanged(previous_ie)
814
if self.symlink_target != previous_ie.symlink_target:
818
def _snapshot_text(self, file_parents, work_tree, commit_builder):
819
"""See InventoryEntry._snapshot_text."""
820
commit_builder.modified_link(
821
self.file_id, file_parents, self.symlink_target)
824
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):
825
199
"""Inventory of versioned files in a tree.
827
This describes which file_id is present at each point in the tree,
828
and possibly the SHA-1 or other information about the file.
829
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.
831
208
The inventory represents a typical unix file tree, with
832
209
directories containing files and subdirectories. We never store
854
236
May also look up by name:
856
238
>>> [x[0] for x in inv.iter_entries()]
858
>>> inv = Inventory('TREE_ROOT-12345678-12345678')
859
>>> inv.add(InventoryFile('123-123', 'hello.c', ROOT_ID))
860
Traceback (most recent call last):
861
BzrError: parent_id {TREE_ROOT} not in inventory
862
>>> inv.add(InventoryFile('123-123', 'hello.c', 'TREE_ROOT-12345678-12345678'))
863
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" />
865
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.
866
262
"""Create or read an inventory.
868
264
If a working directory is specified, the inventory is read
869
265
from there. If the file is specified, read from that. If not,
870
266
the inventory is created empty.
872
The inventory is created with a default root directory, with
875
if root_id is not None:
876
self._set_root(InventoryDirectory(root_id, '', None))
880
self.revision_id = revision_id
882
def _set_root(self, ie):
884
self._byid = {self.root.file_id: self.root}
887
# TODO: jam 20051218 Should copy also copy the revision_id?
888
entries = self.iter_entries()
889
other = Inventory(entries.next()[1].file_id)
890
# copy recursively so we know directories will be added before
891
# their children. There are more efficient ways than this...
892
for path, entry in entries():
893
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: {}}
896
275
def __iter__(self):
897
276
return iter(self._byid)
899
279
def __len__(self):
900
280
"""Returns number of entries."""
901
281
return len(self._byid)
903
def iter_entries(self, from_dir=None):
284
def iter_entries(self, parent_id=None):
904
285
"""Return (path, entry) pairs, in order by name."""
906
if self.root is None:
910
elif isinstance(from_dir, basestring):
911
from_dir = self._byid[from_dir]
913
# unrolling the recursive called changed the time from
914
# 440ms/663ms (inline/total) to 116ms/116ms
915
children = from_dir.children.items()
917
children = collections.deque(children)
918
stack = [(u'', children)]
920
from_dir_relpath, children = stack[-1]
923
name, ie = children.popleft()
925
# we know that from_dir_relpath never ends in a slash
926
# and 'f' doesn't begin with one, we can do a string op, rather
927
# than the checks of pathjoin(), though this means that all paths
929
path = from_dir_relpath + '/' + name
933
if ie.kind != 'directory':
936
# But do this child first
937
new_children = ie.children.items()
939
new_children = collections.deque(new_children)
940
stack.append((path, new_children))
941
# Break out of inner loop, so that we start outer loop with child
944
# if we finished all children, pop it off the stack
947
def iter_entries_by_dir(self, from_dir=None, specific_file_ids=None):
948
"""Iterate over the entries in a directory first order.
950
This returns all entries for a directory before returning
951
the entries for children of a directory. This is not
952
lexicographically sorted order, and is a hybrid between
953
depth-first and breadth-first.
955
:return: This yields (path, entry) pairs
957
# TODO? Perhaps this should return the from_dir so that the root is
958
# yielded? or maybe an option?
960
if self.root is None:
962
# Optimize a common case
963
if specific_file_ids is not None and len(specific_file_ids) == 1:
964
file_id = list(specific_file_ids)[0]
966
yield self.id2path(file_id), self[file_id]
969
if (specific_file_ids is None or
970
self.root.file_id in specific_file_ids):
972
elif isinstance(from_dir, basestring):
973
from_dir = self._byid[from_dir]
975
if specific_file_ids is not None:
977
def add_ancestors(file_id):
978
if file_id not in self:
980
parent_id = self[file_id].parent_id
981
if parent_id is None:
983
if parent_id not in parents:
984
parents.add(parent_id)
985
add_ancestors(parent_id)
986
for file_id in specific_file_ids:
987
add_ancestors(file_id)
991
stack = [(u'', from_dir)]
993
cur_relpath, cur_dir = stack.pop()
996
for child_name, child_ie in sorted(cur_dir.children.iteritems()):
998
child_relpath = cur_relpath + child_name
1000
if (specific_file_ids is None or
1001
child_ie.file_id in specific_file_ids):
1002
yield child_relpath, child_ie
1004
if child_ie.kind == 'directory':
1005
if parents is None or child_ie.file_id in parents:
1006
child_dirs.append((child_relpath+'/', child_ie))
1007
stack.extend(reversed(child_dirs))
1010
"""Return list of (path, ie) for all entries except the root.
1012
This may be faster than iter_entries.
1015
def descend(dir_ie, dir_path):
1016
kids = dir_ie.children.items()
1018
for name, ie in kids:
1019
child_path = osutils.pathjoin(dir_path, name)
1020
accum.append((child_path, ie))
1021
if ie.kind == 'directory':
1022
descend(ie, child_path)
1024
descend(self.root, u'')
1027
def directories(self):
1028
"""Return (path, entry) pairs for all directories, including the root.
1031
def descend(parent_ie, parent_path):
1032
accum.append((parent_path, parent_ie))
1034
kids = [(ie.name, ie) for ie in parent_ie.children.itervalues() if ie.kind == 'directory']
1037
for name, child_ie in kids:
1038
child_path = osutils.pathjoin(parent_path, name)
1039
descend(child_ie, child_path)
1040
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
1043
315
def __contains__(self, file_id):
1044
316
"""True if this entry contains a file with given id.
1046
318
>>> inv = Inventory()
1047
>>> inv.add(InventoryFile('123', 'foo.c', ROOT_ID))
1048
InventoryFile('123', 'foo.c', parent_id='TREE_ROOT', sha1=None, len=None)
319
>>> inv.add(InventoryEntry('123', 'foo.c'))
1049
320
>>> '123' in inv
1051
322
>>> '456' in inv
1054
return (file_id in self._byid)
325
return file_id in self._byid
1056
328
def __getitem__(self, file_id):
1057
329
"""Return the entry for given file_id.
1059
331
>>> inv = Inventory()
1060
>>> inv.add(InventoryFile('123123', 'hello.c', ROOT_ID))
1061
InventoryFile('123123', 'hello.c', parent_id='TREE_ROOT', sha1=None, len=None)
332
>>> inv.add(InventoryEntry('123123', 'hello.c'))
1062
333
>>> inv['123123'].name
1066
return self._byid[file_id]
1068
# really we're passing an inventory, not a tree...
1069
raise errors.NoSuchId(self, file_id)
1071
def get_file_kind(self, file_id):
1072
return self._byid[file_id].kind
1074
def get_child(self, parent_id, filename):
1075
return self[parent_id].children.get(filename)
336
return self._byid[file_id]
1077
339
def add(self, entry):
1078
340
"""Add entry to inventory.
1080
342
To add a file to a branch ready to be committed, use Branch.add,
1083
Returns the new entry object.
1085
if entry.file_id in self._byid:
1086
raise BzrError("inventory already contains entry with id {%s}" % entry.file_id)
1088
if entry.parent_id is None:
1089
assert self.root is None and len(self._byid) == 0
1090
self._set_root(entry)
1093
parent = self._byid[entry.parent_id]
1095
raise BzrError("parent_id {%s} not in inventory" % entry.parent_id)
1097
if entry.name in parent.children:
1098
raise BzrError("%s is already versioned" %
1099
osutils.pathjoin(self.id2path(parent.file_id), entry.name))
344
if entry.file_id in self:
345
bailout("inventory already contains entry with id {%s}" % entry.file_id)
347
if entry.parent_id != None:
348
if entry.parent_id not in self:
349
bailout("parent_id %s of new entry not found in inventory"
352
if self._tree[entry.parent_id].has_key(entry.name):
353
bailout("%s is already versioned"
354
% appendpath(self.id2path(entry.parent_id), entry.name))
1101
356
self._byid[entry.file_id] = entry
1102
parent.children[entry.name] = entry
1105
def add_path(self, relpath, kind, file_id=None, parent_id=None):
1106
"""Add entry from a path.
1108
The immediate parent must already be versioned.
1110
Returns the new entry object."""
1112
parts = osutils.splitpath(relpath)
1116
file_id = generate_ids.gen_root_id()
1117
self.root = InventoryDirectory(file_id, '', None)
1118
self._byid = {self.root.file_id: self.root}
1121
parent_path = parts[:-1]
1122
parent_id = self.path2id(parent_path)
1123
if parent_id is None:
1124
raise errors.NotVersionedError(path=parent_path)
1125
ie = make_entry(kind, parts[-1], parent_id, file_id)
357
self._tree[entry.parent_id][entry.name] = entry
359
if entry.kind == 'directory':
360
self._tree[entry.file_id] = {}
1128
363
def __delitem__(self, file_id):
1129
364
"""Remove entry by id.
1131
366
>>> inv = Inventory()
1132
>>> inv.add(InventoryFile('123', 'foo.c', ROOT_ID))
1133
InventoryFile('123', 'foo.c', parent_id='TREE_ROOT', sha1=None, len=None)
367
>>> inv.add(InventoryEntry('123', 'foo.c'))
1134
368
>>> '123' in inv
1136
370
>>> del inv['123']
added
removed
bzrlib/inventory.py
