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- Committer: mbp at sourcefrog
- Date: 2005-03-30 22:27:17 UTC
- Revision ID: mbp@sourcefrog.net-20050330222717-027b5837127b938d
experiment with new nested inventory file format
not used by default yet
not used by default yet
- files added:
- bzrlib/tests.py
- files removed:
- .rsyncexclude
- bzrlib/plugins
- bzrlib/selftest
- bzrlib/store
- bzrlib/transport
- bzrlib/util
- bzrlib/util/effbot
- bzrlib/util/effbot/org
- bzrlib/util/urlgrabber
- contrib
- contrib/bash
- contrib/emacs
- contrib/zsh
- patches
- tools
- files renamed:
- contrib/newinventory.py => bzrlib/newinventory.py
- bzrlib/store/__init__.py => bzrlib/store.py
- bzrlib/util/elementtree/ => elementtree/
- files modified:
- .bzrignore
added
removed
bzrlib/inventory.py
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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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# 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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ROOT_ID = "TREE_ROOT"
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import os.path
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import re
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import sys
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import tarfile
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import types
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"""Inventories map files to their name in a revision."""
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# TODO: Maybe store inventory_id in the file? Not really needed.
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__copyright__ = "Copyright (C) 2005 Canonical Ltd."
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__author__ = "Martin Pool <mbp@canonical.com>"
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import sys, os.path, types
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from sets import Set
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try:
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from cElementTree import Element, ElementTree, SubElement
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except ImportError:
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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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import bzrlib
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from bzrlib.errors import BzrError, BzrCheckError
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from bzrlib.osutils import (pumpfile, quotefn, splitpath, joinpath,
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appendpath, sha_strings)
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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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from bzrlib.errors import NotVersionedError
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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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file_id
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name
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(within the parent directory)
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parent_id
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file_id of the parent directory, or ROOT_ID
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revision
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the revision_id in which this variation of this file was
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introduced.
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executable
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Indicates that this file should be executable on systems
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that support it.
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text_sha1
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sha-1 of the text of the file
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text_size
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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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* *file_id*
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* *name*: (only the basename within the directory, must not
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contain slashes)
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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.path2id('')
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'TREE_ROOT'
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>>> i.add(InventoryDirectory('123', 'src', ROOT_ID))
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InventoryDirectory('123', 'src', parent_id='TREE_ROOT')
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>>> i.add(InventoryFile('2323', 'hello.c', parent_id='123'))
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InventoryFile('2323', 'hello.c', parent_id='123')
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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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... print j
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...
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('src', InventoryDirectory('123', 'src', parent_id='TREE_ROOT'))
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('src/hello.c', InventoryFile('2323', 'hello.c', parent_id='123'))
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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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...
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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')
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>>> i.add(InventoryDirectory('2325', 'wibble', '123'))
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InventoryDirectory('2325', 'wibble', parent_id='123')
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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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'2325'
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>>> '2325' in i
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True
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>>> i.add(InventoryFile('2326', 'wibble.c', '2325'))
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InventoryFile('2326', 'wibble.c', parent_id='2325')
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>>> i.add(InventoryEntry('2326', 'wibble.c', parent_id='2325'))
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>>> i['2326']
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InventoryFile('2326', 'wibble.c', parent_id='2325')
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>>> for path, entry in i.iter_entries():
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... print path.replace('\\\\', '/') # for win32 os.sep
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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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... print j[0]
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... assert i.path2id(j[0])
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...
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src
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src/bye.c
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src/hello.c
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src/wibble
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src/wibble/wibble.c
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>>> i.id2path('2326').replace('\\\\', '/')
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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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"""
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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']
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def _add_text_to_weave(self, new_lines, parents, weave_store):
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weave_store.add_text(self.file_id, self.revision, new_lines, parents)
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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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"""
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return False, False
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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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"""
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self._read_tree_state(tree.id2path(self.file_id), tree)
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if to_entry:
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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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to_tree)
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self._diff(text_diff, from_label, tree, to_label, to_entry, to_tree,
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output_to, reverse)
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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, entry_weave):
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"""Return the revisions and entries that directly preceed 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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"""
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def get_ancestors(weave, entry):
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return set(map(weave.idx_to_name,
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weave.inclusions([weave.lookup(entry.revision)])))
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heads = {}
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head_ancestors = {}
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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 heads:
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assert heads[ie.revision] == ie
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else:
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# may want to add it.
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# may already be covered:
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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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if already_present:
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# an ancestor of a known head.
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continue
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# definately a head:
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ancestors = get_ancestors(entry_weave, 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 head is not really a head
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heads.pop(head)
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head_ancestors[ie.revision] = ancestors
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heads[ie.revision] = ie
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return heads
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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(os.path.join(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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item.mtime = now
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fileobj = self._put_in_tar(item, tree)
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return item, fileobj
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def has_text(self):
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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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"""
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return False
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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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parent_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.name
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'hello.c'
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>>> e.file_id
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'123'
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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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BzrCheckError: InventoryEntry name 'src/hello.c' is invalid
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BzrError: ("InventoryEntry name is not a simple filename: 'src/hello.c'", [])
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"""
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assert isinstance(name, basestring), name
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if '/' in name or '\\' in name:
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raise BzrCheckError('InventoryEntry name %r is invalid' % name)
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self.executable = False
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self.revision = None
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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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% name)
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self.file_id = file_id
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self.name = name
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assert kind in ['file', 'directory']
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self.kind = kind
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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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"""
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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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"""
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fullpath = appendpath(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, 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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l = self.children.items()
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l.sort()
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return l
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@staticmethod
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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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tests.
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"""
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if self.parent_id != 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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(self.kind, rev_id))
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self.text_sha1 = None
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self.text_size = None
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if kind == 'directory':
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self.children = {}
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def copy(self):
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"""Clone this inventory entry."""
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raise NotImplementedError
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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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return other
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def _get_snapshot_change(self, previous_entries):
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if len(previous_entries) > 1:
299
return 'merged'
300
elif len(previous_entries) == 0:
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return 'added'
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else:
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return 'modified/renamed/reparented'
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def __repr__(self):
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return ("%s(%r, %r, parent_id=%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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self.file_id,
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self.name,
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self.kind,
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self.parent_id))
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def snapshot(self, revision, path, previous_entries,
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work_tree, weave_store):
314
"""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.
318
"""
319
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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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):
325
mutter("found unchanged entry")
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self.revision = parent_ie.revision
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return "unchanged"
328
return self.snapshot_revision(revision, previous_entries,
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work_tree, weave_store)
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def snapshot_revision(self, revision, previous_entries, work_tree,
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weave_store):
333
"""Record this revision unconditionally."""
334
mutter('new revision for {%s}', self.file_id)
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self.revision = revision
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change = self._get_snapshot_change(previous_entries)
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self._snapshot_text(previous_entries, work_tree, weave_store)
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return change
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def _snapshot_text(self, file_parents, work_tree, weave_store):
341
"""Record the 'text' of this entry, whatever form that takes.
342
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This default implementation simply adds an empty text.
344
"""
345
mutter('storing file {%s} in revision {%s}',
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self.file_id, self.revision)
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self._add_text_to_weave([], file_parents, weave_store)
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def __eq__(self, other):
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148
def to_element(self):
149
"""Convert to XML element"""
150
e = Element('entry')
151
152
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)
155
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if self.text_size is not None:
157
e.set('text_size', '%d' % self.text_size)
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for f in ['text_id', 'text_sha1', 'parent_id']:
160
v = getattr(self, f)
161
if v is not None:
162
e.set(f, v)
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e.tail = '\n'
165
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return e
167
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def from_element(cls, elt):
170
assert elt.tag == 'entry'
171
self = cls(elt.get('file_id'), elt.get('name'), elt.get('kind'))
172
self.text_id = elt.get('text_id')
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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')
179
self.text_size = v and int(v)
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return self
182
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from_element = classmethod(from_element)
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def __cmp__(self, other):
187
if self is other:
188
return 0
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if not isinstance(other, InventoryEntry):
351
190
return NotImplemented
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353
return ((self.file_id == other.file_id)
354
and (self.name == other.name)
355
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)
358
and (self.text_id == other.text_id)
359
and (self.parent_id == other.parent_id)
360
and (self.kind == other.kind)
361
and (self.revision == other.revision)
362
and (self.executable == other.executable)
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)
364
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def __ne__(self, other):
366
return not (self == other)
367
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def __hash__(self):
369
raise ValueError('not hashable')
370
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def _unchanged(self, previous_ie):
372
"""Has this entry changed relative to previous_ie.
373
374
This method should be overriden in child classes.
375
"""
376
compatible = True
377
# different inv parent
378
if previous_ie.parent_id != self.parent_id:
379
compatible = False
380
# renamed
381
elif previous_ie.name != self.name:
382
compatible = False
383
return compatible
384
385
def _read_tree_state(self, path, work_tree):
386
"""Populate fields in the inventory entry from the given tree.
387
388
Note that this should be modified to be a noop on virtual trees
389
as all entries created there are prepopulated.
390
"""
391
392
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class RootEntry(InventoryEntry):
394
395
def _check(self, checker, rev_id, tree):
396
"""See InventoryEntry._check"""
397
398
def __init__(self, file_id):
399
self.file_id = file_id
400
self.children = {}
401
self.kind = 'root_directory'
402
self.parent_id = None
403
self.name = ''
404
405
def __eq__(self, other):
406
if not isinstance(other, RootEntry):
407
return NotImplemented
408
409
return (self.file_id == other.file_id) \
410
and (self.children == other.children)
411
412
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class InventoryDirectory(InventoryEntry):
414
"""A directory in an inventory."""
415
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def _check(self, checker, rev_id, tree):
417
"""See InventoryEntry._check"""
418
if self.text_sha1 != None or self.text_size != None or self.text_id != None:
419
raise BzrCheckError('directory {%s} has text in revision {%s}'
420
% (self.file_id, rev_id))
421
422
def copy(self):
423
other = InventoryDirectory(self.file_id, self.name, self.parent_id)
424
other.revision = self.revision
425
# note that children are *not* copied; they're pulled across when
426
# others are added
427
return other
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def __init__(self, file_id, name, parent_id):
430
super(InventoryDirectory, self).__init__(file_id, name, parent_id)
431
self.children = {}
432
self.kind = 'directory'
433
434
def kind_character(self):
435
"""See InventoryEntry.kind_character."""
436
return '/'
437
438
def _put_in_tar(self, item, tree):
439
"""See InventoryEntry._put_in_tar."""
440
item.type = tarfile.DIRTYPE
441
fileobj = None
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item.name += '/'
443
item.size = 0
444
item.mode = 0755
445
return fileobj
446
447
def _put_on_disk(self, fullpath, tree):
448
"""See InventoryEntry._put_on_disk."""
449
os.mkdir(fullpath)
450
451
452
class InventoryFile(InventoryEntry):
453
"""A file in an inventory."""
454
455
def _check(self, checker, rev_id, tree):
456
"""See InventoryEntry._check"""
457
revision = self.revision
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t = (self.file_id, revision)
459
if t in checker.checked_texts:
460
prev_sha = checker.checked_texts[t]
461
if prev_sha != self.text_sha1:
462
raise BzrCheckError('mismatched sha1 on {%s} in {%s}' %
463
(self.file_id, rev_id))
464
else:
465
checker.repeated_text_cnt += 1
466
return
467
mutter('check version {%s} of {%s}', rev_id, self.file_id)
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file_lines = tree.get_file_lines(self.file_id)
469
checker.checked_text_cnt += 1
470
if self.text_size != sum(map(len, file_lines)):
471
raise BzrCheckError('text {%s} wrong size' % self.text_id)
472
if self.text_sha1 != sha_strings(file_lines):
473
raise BzrCheckError('text {%s} wrong sha1' % self.text_id)
474
checker.checked_texts[t] = self.text_sha1
475
476
def copy(self):
477
other = InventoryFile(self.file_id, self.name, self.parent_id)
478
other.executable = self.executable
479
other.text_id = self.text_id
480
other.text_sha1 = self.text_sha1
481
other.text_size = self.text_size
482
other.revision = self.revision
483
return other
484
485
def detect_changes(self, old_entry):
486
"""See InventoryEntry.detect_changes."""
487
assert self.text_sha1 != None
488
assert old_entry.text_sha1 != None
489
text_modified = (self.text_sha1 != old_entry.text_sha1)
490
meta_modified = (self.executable != old_entry.executable)
491
return text_modified, meta_modified
492
493
def _diff(self, text_diff, from_label, tree, to_label, to_entry, to_tree,
494
output_to, reverse=False):
495
"""See InventoryEntry._diff."""
496
from_text = tree.get_file(self.file_id).readlines()
497
if to_entry:
498
to_text = to_tree.get_file(to_entry.file_id).readlines()
499
else:
500
to_text = []
501
if not reverse:
502
text_diff(from_label, from_text,
503
to_label, to_text, output_to)
504
else:
505
text_diff(to_label, to_text,
506
from_label, from_text, output_to)
507
508
def has_text(self):
509
"""See InventoryEntry.has_text."""
510
return True
511
512
def __init__(self, file_id, name, parent_id):
513
super(InventoryFile, self).__init__(file_id, name, parent_id)
514
self.kind = 'file'
515
516
def kind_character(self):
517
"""See InventoryEntry.kind_character."""
518
return ''
519
520
def _put_in_tar(self, item, tree):
521
"""See InventoryEntry._put_in_tar."""
522
item.type = tarfile.REGTYPE
523
fileobj = tree.get_file(self.file_id)
524
item.size = self.text_size
525
if tree.is_executable(self.file_id):
526
item.mode = 0755
527
else:
528
item.mode = 0644
529
return fileobj
530
531
def _put_on_disk(self, fullpath, tree):
532
"""See InventoryEntry._put_on_disk."""
533
pumpfile(tree.get_file(self.file_id), file(fullpath, 'wb'))
534
if tree.is_executable(self.file_id):
535
os.chmod(fullpath, 0755)
536
537
def _read_tree_state(self, path, work_tree):
538
"""See InventoryEntry._read_tree_state."""
539
self.text_sha1 = work_tree.get_file_sha1(self.file_id)
540
self.executable = work_tree.is_executable(self.file_id)
541
542
def _snapshot_text(self, file_parents, work_tree, weave_store):
543
"""See InventoryEntry._snapshot_text."""
544
mutter('storing file {%s} in revision {%s}',
545
self.file_id, self.revision)
546
# special case to avoid diffing on renames or
547
# reparenting
548
if (len(file_parents) == 1
549
and self.text_sha1 == file_parents.values()[0].text_sha1
550
and self.text_size == file_parents.values()[0].text_size):
551
previous_ie = file_parents.values()[0]
552
weave_store.add_identical_text(
553
self.file_id, previous_ie.revision,
554
self.revision, file_parents)
555
else:
556
new_lines = work_tree.get_file(self.file_id).readlines()
557
self._add_text_to_weave(new_lines, file_parents, weave_store)
558
self.text_sha1 = sha_strings(new_lines)
559
self.text_size = sum(map(len, new_lines))
560
561
562
def _unchanged(self, previous_ie):
563
"""See InventoryEntry._unchanged."""
564
compatible = super(InventoryFile, self)._unchanged(previous_ie)
565
if self.text_sha1 != previous_ie.text_sha1:
566
compatible = False
567
else:
568
# FIXME: 20050930 probe for the text size when getting sha1
569
# in _read_tree_state
570
self.text_size = previous_ie.text_size
571
return compatible
572
573
574
class InventoryLink(InventoryEntry):
575
"""A file in an inventory."""
576
577
__slots__ = ['symlink_target']
578
579
def _check(self, checker, rev_id, tree):
580
"""See InventoryEntry._check"""
581
if self.text_sha1 != None or self.text_size != None or self.text_id != None:
582
raise BzrCheckError('symlink {%s} has text in revision {%s}'
583
% (self.file_id, rev_id))
584
if self.symlink_target == None:
585
raise BzrCheckError('symlink {%s} has no target in revision {%s}'
586
% (self.file_id, rev_id))
587
588
def copy(self):
589
other = InventoryLink(self.file_id, self.name, self.parent_id)
590
other.symlink_target = self.symlink_target
591
other.revision = self.revision
592
return other
593
594
def detect_changes(self, old_entry):
595
"""See InventoryEntry.detect_changes."""
596
# FIXME: which _modified field should we use ? RBC 20051003
597
text_modified = (self.symlink_target != old_entry.symlink_target)
598
if text_modified:
599
mutter(" symlink target changed")
600
meta_modified = False
601
return text_modified, meta_modified
602
603
def _diff(self, text_diff, from_label, tree, to_label, to_entry, to_tree,
604
output_to, reverse=False):
605
"""See InventoryEntry._diff."""
606
from_text = self.symlink_target
607
if to_entry is not None:
608
to_text = to_entry.symlink_target
609
if reverse:
610
temp = from_text
611
from_text = to_text
612
to_text = temp
613
print >>output_to, '=== target changed %r => %r' % (from_text, to_text)
614
else:
615
if not reverse:
616
print >>output_to, '=== target was %r' % self.symlink_target
617
else:
618
print >>output_to, '=== target is %r' % self.symlink_target
619
620
def __init__(self, file_id, name, parent_id):
621
super(InventoryLink, self).__init__(file_id, name, parent_id)
622
self.kind = 'symlink'
623
624
def kind_character(self):
625
"""See InventoryEntry.kind_character."""
626
return ''
627
628
def _put_in_tar(self, item, tree):
629
"""See InventoryEntry._put_in_tar."""
630
iterm.type = tarfile.SYMTYPE
631
fileobj = None
632
item.size = 0
633
item.mode = 0755
634
item.linkname = self.symlink_target
635
return fileobj
636
637
def _put_on_disk(self, fullpath, tree):
638
"""See InventoryEntry._put_on_disk."""
639
try:
640
os.symlink(self.symlink_target, fullpath)
641
except OSError,e:
642
raise BzrError("Failed to create symlink %r -> %r, error: %s" % (fullpath, self.symlink_target, e))
643
644
def _read_tree_state(self, path, work_tree):
645
"""See InventoryEntry._read_tree_state."""
646
self.symlink_target = work_tree.get_symlink_target(self.file_id)
647
648
def _unchanged(self, previous_ie):
649
"""See InventoryEntry._unchanged."""
650
compatible = super(InventoryLink, self)._unchanged(previous_ie)
651
if self.symlink_target != previous_ie.symlink_target:
652
compatible = False
653
return compatible
654
655
656
class Inventory(object):
192
return cmp(self.file_id, other.file_id) \
193
or cmp(self.name, other.name) \
194
or cmp(self.text_sha1, other.text_sha1) \
195
or cmp(self.text_size, other.text_size) \
196
or cmp(self.text_id, other.text_id) \
197
or cmp(self.parent_id, other.parent_id) \
198
or cmp(self.kind, other.kind)
199
200
201
202
class Inventory(XMLMixin):
657
203
"""Inventory of versioned files in a tree.
658
204
659
This describes which file_id is present at each point in the tree,
660
and possibly the SHA-1 or other information about the file.
661
Entries can be looked up either by path or by file_id.
205
An Inventory acts like a set of InventoryEntry items. You can
206
also look files up by their file_id or name.
207
208
May be read from and written to a metadata file in a tree. To
209
manipulate the inventory (for example to add a file), it is read
210
in, modified, and then written back out.
662
211
663
212
The inventory represents a typical unix file tree, with
664
213
directories containing files and subdirectories. We never store
668
217
returned quickly.
669
218
670
219
InventoryEntry objects must not be modified after they are
671
inserted, other than through the Inventory API.
220
inserted.
672
221
673
222
>>> inv = Inventory()
674
>>> inv.add(InventoryFile('123-123', 'hello.c', ROOT_ID))
675
InventoryFile('123-123', 'hello.c', parent_id='TREE_ROOT')
223
>>> inv.write_xml(sys.stdout)
224
<inventory>
225
</inventory>
226
>>> inv.add(InventoryEntry('123-123', 'hello.c'))
676
227
>>> inv['123-123'].name
677
228
'hello.c'
678
229
687
238
688
239
>>> [x[0] for x in inv.iter_entries()]
689
240
['hello.c']
690
>>> inv = Inventory('TREE_ROOT-12345678-12345678')
691
>>> inv.add(InventoryFile('123-123', 'hello.c', ROOT_ID))
692
InventoryFile('123-123', 'hello.c', parent_id='TREE_ROOT-12345678-12345678')
241
242
>>> inv.write_xml(sys.stdout)
243
<inventory>
244
<entry file_id="123-123" kind="file" name="hello.c" />
245
</inventory>
246
693
247
"""
694
def __init__(self, root_id=ROOT_ID):
248
249
## TODO: Make sure only canonical filenames are stored.
250
251
## TODO: Do something sensible about the possible collisions on
252
## case-losing filesystems. Perhaps we should just always forbid
253
## such collisions.
254
255
## TODO: No special cases for root, rather just give it a file id
256
## like everything else.
257
258
## TODO: Probably change XML serialization to use nesting
259
260
def __init__(self):
695
261
"""Create or read an inventory.
696
262
697
263
If a working directory is specified, the inventory is read
698
264
from there. If the file is specified, read from that. If not,
699
265
the inventory is created empty.
700
701
The inventory is created with a default root directory, with
702
an id of None.
703
266
"""
704
# We are letting Branch.initialize() create a unique inventory
705
# root id. Rather than generating a random one here.
706
#if root_id is None:
707
# root_id = bzrlib.branch.gen_file_id('TREE_ROOT')
708
self.root = RootEntry(root_id)
709
self._byid = {self.root.file_id: self.root}
710
711
712
def copy(self):
713
other = Inventory(self.root.file_id)
714
# copy recursively so we know directories will be added before
715
# their children. There are more efficient ways than this...
716
for path, entry in self.iter_entries():
717
if entry == self.root:
718
continue
719
other.add(entry.copy())
720
return other
267
self._root = InventoryEntry(None, '', kind='directory')
268
self._byid = {None: self._root}
721
269
722
270
723
271
def __iter__(self):
729
277
return len(self._byid)
730
278
731
279
732
def iter_entries(self, from_dir=None):
280
def iter_entries(self, parent_id=None):
733
281
"""Return (path, entry) pairs, in order by name."""
734
if from_dir == None:
735
assert self.root
736
from_dir = self.root
737
elif isinstance(from_dir, basestring):
738
from_dir = self._byid[from_dir]
739
740
kids = from_dir.children.items()
282
kids = self[parent_id].children.items()
741
283
kids.sort()
742
284
for name, ie in kids:
743
285
yield name, ie
744
286
if ie.kind == 'directory':
745
for cn, cie in self.iter_entries(from_dir=ie.file_id):
746
yield os.path.join(name, cn), cie
747
748
749
def entries(self):
750
"""Return list of (path, ie) for all entries except the root.
751
752
This may be faster than iter_entries.
753
"""
754
accum = []
755
def descend(dir_ie, dir_path):
756
kids = dir_ie.children.items()
757
kids.sort()
758
for name, ie in kids:
759
child_path = os.path.join(dir_path, name)
760
accum.append((child_path, ie))
761
if ie.kind == 'directory':
762
descend(ie, child_path)
763
764
descend(self.root, '')
765
return accum
287
for cn, cie in self.iter_entries(parent_id=ie.file_id):
288
yield joinpath([name, cn]), cie
766
289
767
290
768
291
def directories(self):
769
"""Return (path, entry) pairs for all directories, including the root.
292
"""Return (path, entry) pairs for all directories.
770
293
"""
771
accum = []
772
def descend(parent_ie, parent_path):
773
accum.append((parent_path, parent_ie))
774
775
kids = [(ie.name, ie) for ie in parent_ie.children.itervalues() if ie.kind == 'directory']
776
kids.sort()
777
778
for name, child_ie in kids:
779
child_path = os.path.join(parent_path, name)
780
descend(child_ie, child_path)
781
descend(self.root, '')
782
return accum
294
yield '', self._root
295
for path, entry in self.iter_entries():
296
if entry.kind == 'directory':
297
yield path, entry
783
298
784
299
785
300
787
302
"""True if this entry contains a file with given id.
788
303
789
304
>>> inv = Inventory()
790
>>> inv.add(InventoryFile('123', 'foo.c', ROOT_ID))
791
InventoryFile('123', 'foo.c', parent_id='TREE_ROOT')
305
>>> inv.add(InventoryEntry('123', 'foo.c'))
792
306
>>> '123' in inv
793
307
True
794
308
>>> '456' in inv
801
315
"""Return the entry for given file_id.
802
316
803
317
>>> inv = Inventory()
804
>>> inv.add(InventoryFile('123123', 'hello.c', ROOT_ID))
805
InventoryFile('123123', 'hello.c', parent_id='TREE_ROOT')
318
>>> inv.add(InventoryEntry('123123', 'hello.c'))
806
319
>>> inv['123123'].name
807
320
'hello.c'
808
321
"""
809
try:
810
return self._byid[file_id]
811
except KeyError:
812
if file_id == None:
813
raise BzrError("can't look up file_id None")
814
else:
815
raise BzrError("file_id {%s} not in inventory" % file_id)
816
817
818
def get_file_kind(self, file_id):
819
return self._byid[file_id].kind
322
return self._byid[file_id]
323
820
324
821
325
def get_child(self, parent_id, filename):
822
return self[parent_id].children.get(filename)
326
if parent_id == None:
327
return self._root.children.get(filename)
328
else:
329
return self[parent_id].children.get(filename)
823
330
824
331
825
332
def add(self, entry):
826
333
"""Add entry to inventory.
827
334
828
335
To add a file to a branch ready to be committed, use Branch.add,
829
which calls this.
830
831
Returns the new entry object.
832
"""
336
which calls this."""
833
337
if entry.file_id in self._byid:
834
raise BzrError("inventory already contains entry with id {%s}" % entry.file_id)
835
836
if entry.parent_id == ROOT_ID or entry.parent_id is None:
837
entry.parent_id = self.root.file_id
838
839
try:
840
parent = self._byid[entry.parent_id]
841
except KeyError:
842
raise BzrError("parent_id {%s} not in inventory" % entry.parent_id)
338
bailout("inventory already contains entry with id {%s}" % entry.file_id)
339
340
parent = self._byid[entry.parent_id]
341
if parent.kind != 'directory':
342
bailout("attempt to add under non-directory {%s}" % parent.file_id)
843
343
844
344
if parent.children.has_key(entry.name):
845
raise BzrError("%s is already versioned" %
345
bailout("%s is already versioned" %
846
346
appendpath(self.id2path(parent.file_id), entry.name))
847
347
848
348
self._byid[entry.file_id] = entry
849
349
parent.children[entry.name] = entry
850
return entry
851
350
852
351
853
352
def add_path(self, relpath, kind, file_id=None):
854
353
"""Add entry from a path.
855
354
856
The immediate parent must already be versioned.
857
858
Returns the new entry object."""
859
from bzrlib.branch import gen_file_id
860
355
The immediate parent must already be versioned"""
861
356
parts = bzrlib.osutils.splitpath(relpath)
862
357
if len(parts) == 0:
863
raise BzrError("cannot re-add root of inventory")
864
865
if file_id == None:
866
file_id = gen_file_id(relpath)
867
868
parent_path = parts[:-1]
869
parent_id = self.path2id(parent_path)
870
if parent_id == None:
871
raise NotVersionedError(parent_path)
872
873
if kind == 'directory':
874
ie = InventoryDirectory(file_id, parts[-1], parent_id)
875
elif kind == 'file':
876
ie = InventoryFile(file_id, parts[-1], parent_id)
877
elif kind == 'symlink':
878
ie = InventoryLink(file_id, parts[-1], parent_id)
879
else:
880
raise BzrError("unknown kind %r" % kind)
358
bailout("cannot re-add root of inventory")
359
360
if file_id is None:
361
file_id = bzrlib.branch.gen_file_id(relpath)
362
363
parent_id = self.path2id(parts[:-1])
364
ie = InventoryEntry(file_id, parts[-1],
365
kind=kind, parent_id=parent_id)
881
366
return self.add(ie)
882
367
883
368
885
370
"""Remove entry by id.
886
371
887
372
>>> inv = Inventory()
888
>>> inv.add(InventoryFile('123', 'foo.c', ROOT_ID))
889
InventoryFile('123', 'foo.c', parent_id='TREE_ROOT')
373
>>> inv.add(InventoryEntry('123', 'foo.c'))
890
374
>>> '123' in inv
891
375
True
892
376
>>> del inv['123']
908
392
del self[ie.parent_id].children[ie.name]
909
393
910
394
911
def __eq__(self, other):
395
def id_set(self):
396
return Set(self._byid)
397
398
399
def to_element(self):
400
"""Convert to XML Element"""
401
e = Element('inventory')
402
e.text = '\n'
403
for path, ie in self.iter_entries():
404
e.append(ie.to_element())
405
return e
406
407
408
def from_element(cls, elt):
409
"""Construct from XML Element
410
411
>>> inv = Inventory()
412
>>> inv.add(InventoryEntry('foo.c-123981239', 'foo.c'))
413
>>> elt = inv.to_element()
414
>>> inv2 = Inventory.from_element(elt)
415
>>> inv2 == inv
416
True
417
"""
418
assert elt.tag == 'inventory'
419
o = cls()
420
for e in elt:
421
o.add(InventoryEntry.from_element(e))
422
return o
423
424
from_element = classmethod(from_element)
425
426
427
def __cmp__(self, other):
912
428
"""Compare two sets by comparing their contents.
913
429
914
430
>>> i1 = Inventory()
915
431
>>> i2 = Inventory()
916
432
>>> i1 == i2
917
433
True
918
>>> i1.add(InventoryFile('123', 'foo', ROOT_ID))
919
InventoryFile('123', 'foo', parent_id='TREE_ROOT')
434
>>> i1.add(InventoryEntry('123', 'foo'))
920
435
>>> i1 == i2
921
436
False
922
>>> i2.add(InventoryFile('123', 'foo', ROOT_ID))
923
InventoryFile('123', 'foo', parent_id='TREE_ROOT')
437
>>> i2.add(InventoryEntry('123', 'foo'))
924
438
>>> i1 == i2
925
439
True
926
440
"""
441
if self is other:
442
return 0
443
927
444
if not isinstance(other, Inventory):
928
445
return NotImplemented
929
446
930
if len(self._byid) != len(other._byid):
931
# shortcut: obviously not the same
932
return False
933
934
return self._byid == other._byid
935
936
937
def __ne__(self, other):
938
return not self.__eq__(other)
939
940
941
def __hash__(self):
942
raise ValueError('not hashable')
943
944
945
def get_idpath(self, file_id):
946
"""Return a list of file_ids for the path to an entry.
947
948
The list contains one element for each directory followed by
949
the id of the file itself. So the length of the returned list
950
is equal to the depth of the file in the tree, counting the
951
root directory as depth 1.
952
"""
447
if self.id_set() ^ other.id_set():
448
return 1
449
450
for file_id in self._byid:
451
c = cmp(self[file_id], other[file_id])
452
if c: return c
453
454
return 0
455
456
457
def id2path(self, file_id):
458
"""Return as a list the path to file_id."""
953
459
p = []
954
460
while file_id != None:
955
try:
956
ie = self._byid[file_id]
957
except KeyError:
958
raise BzrError("file_id {%s} not found in inventory" % file_id)
959
p.insert(0, ie.file_id)
461
ie = self._byid[file_id]
462
p.insert(0, ie.name)
960
463
file_id = ie.parent_id
961
return p
962
963
964
def id2path(self, file_id):
965
"""Return as a list the path to file_id.
966
967
>>> i = Inventory()
968
>>> e = i.add(InventoryDirectory('src-id', 'src', ROOT_ID))
969
>>> e = i.add(InventoryFile('foo-id', 'foo.c', parent_id='src-id'))
970
>>> print i.id2path('foo-id').replace(os.sep, '/')
971
src/foo.c
972
"""
973
# get all names, skipping root
974
p = [self._byid[fid].name for fid in self.get_idpath(file_id)[1:]]
975
return os.sep.join(p)
464
return '/'.join(p)
976
465
977
466
978
467
984
473
985
474
This returns the entry of the last component in the path,
986
475
which may be either a file or a directory.
987
988
Returns None iff the path is not found.
989
476
"""
990
477
if isinstance(name, types.StringTypes):
991
478
name = splitpath(name)
992
479
993
mutter("lookup path %r" % name)
994
995
parent = self.root
480
parent = self[None]
996
481
for f in name:
997
482
try:
998
483
cie = parent.children[f]
999
484
assert cie.name == f
1000
assert cie.parent_id == parent.file_id
1001
485
parent = cie
1002
486
except KeyError:
1003
487
# or raise an error?
1014
498
return self._byid.has_key(file_id)
1015
499
1016
500
1017
def rename(self, file_id, new_parent_id, new_name):
1018
"""Move a file within the inventory.
1019
1020
This can change either the name, or the parent, or both.
1021
1022
This does not move the working file."""
1023
if not is_valid_name(new_name):
1024
raise BzrError("not an acceptable filename: %r" % new_name)
1025
1026
new_parent = self._byid[new_parent_id]
1027
if new_name in new_parent.children:
1028
raise BzrError("%r already exists in %r" % (new_name, self.id2path(new_parent_id)))
1029
1030
new_parent_idpath = self.get_idpath(new_parent_id)
1031
if file_id in new_parent_idpath:
1032
raise BzrError("cannot move directory %r into a subdirectory of itself, %r"
1033
% (self.id2path(file_id), self.id2path(new_parent_id)))
1034
1035
file_ie = self._byid[file_id]
1036
old_parent = self._byid[file_ie.parent_id]
1037
1038
# TODO: Don't leave things messed up if this fails
1039
1040
del old_parent.children[file_ie.name]
1041
new_parent.children[new_name] = file_ie
1042
1043
file_ie.name = new_name
1044
file_ie.parent_id = new_parent_id
1045
1046
1047
1048
1049
_NAME_RE = None
1050
1051
def is_valid_name(name):
1052
global _NAME_RE
1053
if _NAME_RE == None:
1054
_NAME_RE = re.compile(r'^[^/\\]+$')
1055
1056
return bool(_NAME_RE.match(name))
501
502
503
504
if __name__ == '__main__':
505
import doctest, inventory
506
doctest.testmod(inventory)
Loggerhead is a web-based interface for Breezy
Version: 2.0.1