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# Copyright (C) 2005, 2006 Canonical Ltd
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# (C) 2005 Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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# FIXME: This refactoring of the workingtree code doesn't seem to keep
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# the WorkingTree's copy of the inventory in sync with the branch. The
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# branch modifies its working inventory when it does a commit to make
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# missing files permanently removed.
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# TODO: Maybe also keep the full path of the entry, and the children?
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# But those depend on its position within a particular inventory, and
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# it would be nice not to need to hold the backpointer here.
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# This should really be an id randomly assigned when the tree is
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# created, but it's not for now.
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"""Inventories map files to their name in a revision."""
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# TODO: Maybe store inventory_id in the file? Not really needed.
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__copyright__ = "Copyright (C) 2005 Canonical Ltd."
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__author__ = "Martin Pool <mbp@canonical.com>"
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import sys, os.path, types, re
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from cElementTree import Element, ElementTree, SubElement
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from elementtree.ElementTree import Element, ElementTree, SubElement
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from xml import XMLMixin
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from errors import bailout
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from bzrlib import errors, osutils
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from bzrlib.osutils import (pumpfile, quotefn, splitpath, joinpath,
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pathjoin, sha_strings)
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from bzrlib.errors import (NotVersionedError, InvalidEntryName,
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BzrError, BzrCheckError, BinaryFile)
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from bzrlib.osutils import uuid, quotefn, splitpath, joinpath, appendpath
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from bzrlib.trace import mutter
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class InventoryEntry(object):
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class InventoryEntry(XMLMixin):
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"""Description of a versioned file.
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An InventoryEntry has the following fields, which are also
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present in the XML inventory-entry element:
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(within the parent directory)
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file_id of the parent directory, or ROOT_ID
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the revision_id in which this variation of this file was
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Indicates that this file should be executable on systems
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sha-1 of the text of the file
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size in bytes of the text of the file
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(reading a version 4 tree created a text_id field.)
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* *name*: (only the basename within the directory, must not
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* *kind*: "directory" or "file"
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* *directory_id*: (if absent/null means the branch root directory)
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* *text_sha1*: only for files
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* *text_size*: in bytes, only for files
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* *text_id*: identifier for the text version, only for files
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InventoryEntries can also exist inside a WorkingTree
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inventory, in which case they are not yet bound to a
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particular revision of the file. In that case the text_sha1,
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text_size and text_id are absent.
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>>> i = Inventory()
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>>> i.add(InventoryDirectory('123', 'src', ROOT_ID))
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InventoryDirectory('123', 'src', parent_id='TREE_ROOT', revision=None)
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>>> i.add(InventoryFile('2323', 'hello.c', parent_id='123'))
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InventoryFile('2323', 'hello.c', parent_id='123', sha1=None, len=None)
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>>> shouldbe = {0: '', 1: 'src', 2: pathjoin('src','hello.c')}
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>>> for ix, j in enumerate(i.iter_entries()):
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... print (j[0] == shouldbe[ix], j[1])
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>>> i.add(InventoryEntry('123', 'src', kind='directory'))
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>>> i.add(InventoryEntry('2323', 'hello.c', parent_id='123'))
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>>> for j in i.iter_entries():
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(True, RootEntry('TREE_ROOT', u'', parent_id=None, revision=None))
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(True, InventoryDirectory('123', 'src', parent_id='TREE_ROOT', revision=None))
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(True, InventoryFile('2323', 'hello.c', parent_id='123', sha1=None, len=None))
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>>> i.add(InventoryFile('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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# 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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self.text_sha1 = None
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self.text_size = None
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if kind == 'directory':
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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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l = self.children.items()
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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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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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def __repr__(self):
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return ("%s(%r, %r, parent_id=%r, revision=%r)"
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return ("%s(%r, %r, kind=%r, parent_id=%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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def to_element(self):
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"""Convert to XML element"""
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e.set('name', self.name)
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e.set('file_id', self.file_id)
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e.set('kind', self.kind)
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if self.text_size is not None:
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e.set('text_size', '%d' % self.text_size)
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for f in ['text_id', 'text_sha1', 'parent_id']:
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def from_element(cls, elt):
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assert elt.tag == 'entry'
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self = cls(elt.get('file_id'), elt.get('name'), elt.get('kind'))
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self.text_id = elt.get('text_id')
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self.text_sha1 = elt.get('text_sha1')
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self.parent_id = elt.get('parent_id')
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## mutter("read inventoryentry: %r" % (elt.attrib))
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v = elt.get('text_size')
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self.text_size = v and int(v)
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from_element = classmethod(from_element)
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def __cmp__(self, other):
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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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return cmp(self.file_id, other.file_id) \
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or cmp(self.name, other.name) \
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or cmp(self.text_sha1, other.text_sha1) \
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or cmp(self.text_size, other.text_size) \
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or cmp(self.text_id, other.text_id) \
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or cmp(self.parent_id, other.parent_id) \
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or cmp(self.kind, other.kind)
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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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209
def __init__(self, file_id):
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self.file_id = file_id
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self.children = {}
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self.kind = 'root_directory'
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213
self.parent_id = None
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def __eq__(self, other):
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def __cmp__(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):
533
"""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):
580
"""See InventoryEntry._check"""
581
t = (self.file_id, self.revision)
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if t in checker.checked_texts:
583
prev_sha = checker.checked_texts[t]
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if prev_sha != self.text_sha1:
585
raise BzrCheckError('mismatched sha1 on {%s} in {%s}' %
586
(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:
592
mutter('check weave {%s}', self.file_id)
593
w = tree.get_weave(self.file_id)
594
# Not passing a progress bar, because it creates a new
595
# progress, which overwrites the current progress,
596
# and doesn't look nice
598
checker.checked_weaves[self.file_id] = True
600
w = tree.get_weave(self.file_id)
602
mutter('check version {%s} of {%s}', tree_revision_id, self.file_id)
603
checker.checked_text_cnt += 1
604
# We can't check the length, because Weave doesn't store that
605
# information, and the whole point of looking at the weave's
606
# sha1sum is that we don't have to extract the text.
607
if self.text_sha1 != w.get_sha1(self.revision):
608
raise BzrCheckError('text {%s} version {%s} wrong sha1'
609
% (self.file_id, self.revision))
610
checker.checked_texts[t] = self.text_sha1
613
other = InventoryFile(self.file_id, self.name, self.parent_id)
614
other.executable = self.executable
615
other.text_id = self.text_id
616
other.text_sha1 = self.text_sha1
617
other.text_size = self.text_size
618
other.revision = self.revision
621
def detect_changes(self, old_entry):
622
"""See InventoryEntry.detect_changes."""
623
assert self.text_sha1 is not None
624
assert old_entry.text_sha1 is not None
625
text_modified = (self.text_sha1 != old_entry.text_sha1)
626
meta_modified = (self.executable != old_entry.executable)
627
return text_modified, meta_modified
629
def _diff(self, text_diff, from_label, tree, to_label, to_entry, to_tree,
630
output_to, reverse=False):
631
"""See InventoryEntry._diff."""
633
from_text = tree.get_file(self.file_id).readlines()
635
to_text = to_tree.get_file(to_entry.file_id).readlines()
639
text_diff(from_label, from_text,
640
to_label, to_text, output_to)
642
text_diff(to_label, to_text,
643
from_label, from_text, output_to)
646
label_pair = (to_label, from_label)
648
label_pair = (from_label, to_label)
649
print >> output_to, "Binary files %s and %s differ" % label_pair
652
"""See InventoryEntry.has_text."""
655
def __init__(self, file_id, name, parent_id):
656
super(InventoryFile, self).__init__(file_id, name, parent_id)
659
def kind_character(self):
660
"""See InventoryEntry.kind_character."""
663
def _put_in_tar(self, item, tree):
664
"""See InventoryEntry._put_in_tar."""
665
item.type = tarfile.REGTYPE
666
fileobj = tree.get_file(self.file_id)
667
item.size = self.text_size
668
if tree.is_executable(self.file_id):
674
def _put_on_disk(self, fullpath, tree):
675
"""See InventoryEntry._put_on_disk."""
676
pumpfile(tree.get_file(self.file_id), file(fullpath, 'wb'))
677
if tree.is_executable(self.file_id):
678
os.chmod(fullpath, 0755)
680
def _read_tree_state(self, path, work_tree):
681
"""See InventoryEntry._read_tree_state."""
682
self.text_sha1 = work_tree.get_file_sha1(self.file_id, path=path)
683
# FIXME: 20050930 probe for the text size when getting sha1
684
# in _read_tree_state
685
self.executable = work_tree.is_executable(self.file_id, path=path)
688
return ("%s(%r, %r, parent_id=%r, sha1=%r, len=%s)"
689
% (self.__class__.__name__,
696
def _forget_tree_state(self):
697
self.text_sha1 = None
699
def _snapshot_text(self, file_parents, work_tree, commit_builder):
700
"""See InventoryEntry._snapshot_text."""
701
def get_content_byte_lines():
702
return work_tree.get_file(self.file_id).readlines()
703
self.text_sha1, self.text_size = commit_builder.modified_file_text(
704
self.file_id, file_parents, get_content_byte_lines, self.text_sha1, self.text_size)
706
def _unchanged(self, previous_ie):
707
"""See InventoryEntry._unchanged."""
708
compatible = super(InventoryFile, self)._unchanged(previous_ie)
709
if self.text_sha1 != previous_ie.text_sha1:
712
# FIXME: 20050930 probe for the text size when getting sha1
713
# in _read_tree_state
714
self.text_size = previous_ie.text_size
715
if self.executable != previous_ie.executable:
720
class InventoryLink(InventoryEntry):
721
"""A file in an inventory."""
723
__slots__ = ['text_sha1', 'text_size', 'file_id', 'name', 'kind',
724
'text_id', 'parent_id', 'children', 'executable',
725
'revision', 'symlink_target']
727
def _check(self, checker, rev_id, tree):
728
"""See InventoryEntry._check"""
729
if self.text_sha1 is not None or self.text_size is not None or self.text_id is not None:
730
raise BzrCheckError('symlink {%s} has text in revision {%s}'
731
% (self.file_id, rev_id))
732
if self.symlink_target is None:
733
raise BzrCheckError('symlink {%s} has no target in revision {%s}'
734
% (self.file_id, rev_id))
737
other = InventoryLink(self.file_id, self.name, self.parent_id)
738
other.symlink_target = self.symlink_target
739
other.revision = self.revision
742
def detect_changes(self, old_entry):
743
"""See InventoryEntry.detect_changes."""
744
# FIXME: which _modified field should we use ? RBC 20051003
745
text_modified = (self.symlink_target != old_entry.symlink_target)
747
mutter(" symlink target changed")
748
meta_modified = False
749
return text_modified, meta_modified
751
def _diff(self, text_diff, from_label, tree, to_label, to_entry, to_tree,
752
output_to, reverse=False):
753
"""See InventoryEntry._diff."""
754
from_text = self.symlink_target
755
if to_entry is not None:
756
to_text = to_entry.symlink_target
761
print >>output_to, '=== target changed %r => %r' % (from_text, to_text)
764
print >>output_to, '=== target was %r' % self.symlink_target
766
print >>output_to, '=== target is %r' % self.symlink_target
768
def __init__(self, file_id, name, parent_id):
769
super(InventoryLink, self).__init__(file_id, name, parent_id)
770
self.kind = 'symlink'
772
def kind_character(self):
773
"""See InventoryEntry.kind_character."""
776
def _put_in_tar(self, item, tree):
777
"""See InventoryEntry._put_in_tar."""
778
item.type = tarfile.SYMTYPE
782
item.linkname = self.symlink_target
785
def _put_on_disk(self, fullpath, tree):
786
"""See InventoryEntry._put_on_disk."""
788
os.symlink(self.symlink_target, fullpath)
790
raise BzrError("Failed to create symlink %r -> %r, error: %s" % (fullpath, self.symlink_target, e))
792
def _read_tree_state(self, path, work_tree):
793
"""See InventoryEntry._read_tree_state."""
794
self.symlink_target = work_tree.get_symlink_target(self.file_id)
796
def _forget_tree_state(self):
797
self.symlink_target = None
799
def _unchanged(self, previous_ie):
800
"""See InventoryEntry._unchanged."""
801
compatible = super(InventoryLink, self)._unchanged(previous_ie)
802
if self.symlink_target != previous_ie.symlink_target:
806
def _snapshot_text(self, file_parents, work_tree, commit_builder):
807
"""See InventoryEntry._snapshot_text."""
808
commit_builder.modified_link(
809
self.file_id, file_parents, self.symlink_target)
812
class Inventory(object):
221
return cmp(self.file_id, other.file_id) \
222
or cmp(self.children, other.children)
226
class Inventory(XMLMixin):
813
227
"""Inventory of versioned files in a tree.
815
This describes which file_id is present at each point in the tree,
816
and possibly the SHA-1 or other information about the file.
817
Entries can be looked up either by path or by file_id.
229
An Inventory acts like a set of InventoryEntry items. You can
230
also look files up by their file_id or name.
232
May be read from and written to a metadata file in a tree. To
233
manipulate the inventory (for example to add a file), it is read
234
in, modified, and then written back out.
819
236
The inventory represents a typical unix file tree, with
820
237
directories containing files and subdirectories. We never store
857
291
The inventory is created with a default root directory, with
860
# We are letting Branch.create() create a unique inventory
861
# root id. Rather than generating a random one here.
863
# root_id = bzrlib.branch.gen_file_id('TREE_ROOT')
864
self.root = RootEntry(root_id)
865
# FIXME: this isn't ever used, changing it to self.revision may break
866
# things. TODO make everything use self.revision_id
867
self.revision_id = revision_id
868
self._byid = {self.root.file_id: self.root}
294
self.root = RootEntry(None)
295
self._byid = {None: self.root}
871
# TODO: jam 20051218 Should copy also copy the revision_id?
872
entries = self.iter_entries()
873
other = Inventory(entries.next()[1].file_id)
874
# copy recursively so we know directories will be added before
875
# their children. There are more efficient ways than this...
876
for path, entry in entries():
877
other.add(entry.copy())
880
298
def __iter__(self):
881
299
return iter(self._byid)
883
302
def __len__(self):
884
303
"""Returns number of entries."""
885
304
return len(self._byid)
887
307
def iter_entries(self, from_dir=None):
888
308
"""Return (path, entry) pairs, in order by name."""
893
elif isinstance(from_dir, basestring):
894
from_dir = self._byid[from_dir]
896
# unrolling the recursive called changed the time from
897
# 440ms/663ms (inline/total) to 116ms/116ms
898
children = from_dir.children.items()
900
children = collections.deque(children)
901
stack = [(u'', children)]
903
from_dir_relpath, children = stack[-1]
906
name, ie = children.popleft()
908
# we know that from_dir_relpath never ends in a slash
909
# and 'f' doesn't begin with one, we can do a string op, rather
910
# than the checks of pathjoin(), though this means that all paths
912
path = from_dir_relpath + '/' + name
916
if ie.kind != 'directory':
919
# But do this child first
920
new_children = ie.children.items()
922
new_children = collections.deque(new_children)
923
stack.append((path, new_children))
924
# Break out of inner loop, so that we start outer loop with child
927
# if we finished all children, pop it off the stack
930
def iter_entries_by_dir(self, from_dir=None):
931
"""Iterate over the entries in a directory first order.
933
This returns all entries for a directory before returning
934
the entries for children of a directory. This is not
935
lexicographically sorted order, and is a hybrid between
936
depth-first and breadth-first.
938
:return: This yields (path, entry) pairs
940
# TODO? Perhaps this should return the from_dir so that the root is
941
# yielded? or maybe an option?
946
elif isinstance(from_dir, basestring):
947
from_dir = self._byid[from_dir]
949
stack = [(u'', from_dir)]
951
cur_relpath, cur_dir = stack.pop()
954
for child_name, child_ie in sorted(cur_dir.children.iteritems()):
956
child_relpath = cur_relpath + child_name
958
yield child_relpath, child_ie
960
if child_ie.kind == 'directory':
961
child_dirs.append((child_relpath+'/', child_ie))
962
stack.extend(reversed(child_dirs))
965
"""Return list of (path, ie) for all entries except the root.
967
This may be faster than iter_entries.
970
def descend(dir_ie, dir_path):
971
kids = dir_ie.children.items()
973
for name, ie in kids:
974
child_path = pathjoin(dir_path, name)
975
accum.append((child_path, ie))
312
elif isinstance(from_dir, basestring):
313
from_dir = self._byid[from_dir]
315
kids = from_dir.children.items()
317
for name, ie in kids:
319
if ie.kind == 'directory':
320
for cn, cie in self.iter_entries(from_dir=ie.file_id):
321
yield '/'.join((name, cn)), cie
325
def directories(self, from_dir=None):
326
"""Return (path, entry) pairs for all directories.
328
def descend(parent_ie):
329
parent_name = parent_ie.name
330
yield parent_name, parent_ie
332
# directory children in sorted order
334
for ie in parent_ie.children.itervalues():
976
335
if ie.kind == 'directory':
977
descend(ie, child_path)
979
descend(self.root, u'')
982
def directories(self):
983
"""Return (path, entry) pairs for all directories, including the root.
986
def descend(parent_ie, parent_path):
987
accum.append((parent_path, parent_ie))
336
dn.append((ie.name, ie))
989
kids = [(ie.name, ie) for ie in parent_ie.children.itervalues() if ie.kind == 'directory']
339
for name, child_ie in dn:
340
for sub_name, sub_ie in descend(child_ie):
341
yield appendpath(parent_name, sub_name), sub_ie
992
for name, child_ie in kids:
993
child_path = pathjoin(parent_path, name)
994
descend(child_ie, child_path)
995
descend(self.root, u'')
343
for name, ie in descend(self.root):
998
348
def __contains__(self, file_id):
999
349
"""True if this entry contains a file with given id.
1001
351
>>> inv = Inventory()
1002
>>> inv.add(InventoryFile('123', 'foo.c', ROOT_ID))
1003
InventoryFile('123', 'foo.c', parent_id='TREE_ROOT', sha1=None, len=None)
352
>>> inv.add(InventoryEntry('123', 'foo.c'))
1004
353
>>> '123' in inv
1006
355
>>> '456' in inv
added
removed
bzrlib/inventory.py
