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  • Committer: Jelmer Vernooij
  • Date: 2009-01-28 18:42:55 UTC
  • mto: This revision was merged to the branch mainline in revision 3968.
  • Revision ID: jelmer@samba.org-20090128184255-bdmklkvm83ltk191
https://launchpad.net/bugs/321183
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bzrlib/memorytree.py
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from copy import deepcopy
 
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import os
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from bzrlib import errors, mutabletree
 
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from bzrlib import (
 
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    errors,
 
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    mutabletree,
 
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    osutils,
 
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    revision as _mod_revision,
 
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    )
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from bzrlib.decorators import needs_read_lock, needs_write_lock
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from bzrlib.osutils import sha_file
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from bzrlib.mutabletree import needs_tree_write_lock
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    @staticmethod
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    def create_on_branch(branch):
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        """Create a MemoryTree for branch, using the last-revision of branch."""
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        return MemoryTree(branch, branch.last_revision())
 
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        revision_id = _mod_revision.ensure_null(branch.last_revision())
 
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        return MemoryTree(branch, revision_id)
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    def _gather_kinds(self, files, kinds):
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        """See MutableTree._gather_kinds.
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        missing files, so is a no-op.
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        """
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    def get_file(self, file_id):
 
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    def get_file(self, file_id, path=None):
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        """See Tree.get_file."""
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        return self._file_transport.get(self.id2path(file_id))
 
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        if path is None:
 
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            path = self.id2path(file_id)
 
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        return self._file_transport.get(path)
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    def get_file_sha1(self, file_id, path=None):
 
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    def get_file_sha1(self, file_id, path=None, stat_value=None):
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        """See Tree.get_file_sha1()."""
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        if path is None:
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            path = self.id2path(file_id)
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        stream = self._file_transport.get(path)
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        return sha_file(stream)
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    def get_root_id(self):
 
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        return self.path2id('')
 
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    def _comparison_data(self, entry, path):
 
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        """See Tree._comparison_data."""
 
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        if entry is None:
 
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            return None, False, None
 
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        return entry.kind, entry.executable, None
 
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    @needs_tree_write_lock
 
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    def rename_one(self, from_rel, to_rel):
 
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        file_id = self.path2id(from_rel)
 
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        to_dir, to_tail = os.path.split(to_rel)
 
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        to_parent_id = self.path2id(to_dir)
 
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        self._file_transport.move(from_rel, to_rel)
 
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        self._inventory.rename(file_id, to_parent_id, to_tail)
 
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    def path_content_summary(self, path):
 
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        """See Tree.path_content_summary."""
 
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        id = self.path2id(path)
 
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        if id is None:
 
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            return 'missing', None, None, None
 
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        kind = self.kind(id)
 
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        if kind == 'file':
 
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            bytes = self._file_transport.get_bytes(path)
 
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            size = len(bytes)
 
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            executable = self._inventory[id].executable
 
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            sha1 = None # no stat cache
 
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            return (kind, size, executable, sha1)
 
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        elif kind == 'directory':
 
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            # memory tree does not support nested trees yet.
 
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            return kind, None, None, None
 
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        elif kind == 'symlink':
 
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            raise NotImplementedError('symlink support')
 
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        else:
 
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            raise NotImplementedError('unknown kind')
 
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    def _file_size(self, entry, stat_value):
 
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        """See Tree._file_size."""
 
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        if entry is None:
 
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            return 0
 
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        return entry.text_size
 
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    @needs_read_lock
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    def get_parent_ids(self):
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        """See Tree.get_parent_ids.
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        """Populate the in-tree state from the branch."""
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        self._basis_tree = self.branch.repository.revision_tree(
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            self._branch_revision_id)
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        if self._branch_revision_id is None:
 
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        if self._branch_revision_id == _mod_revision.NULL_REVISION:
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            self._parent_ids = []
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        else:
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            self._parent_ids = [self._branch_revision_id]
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            else:
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                raise errors.NoSuchId(self, file_id)
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    def set_parent_ids(self, revision_ids, allow_leftmost_as_ghost=False):
 
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        """See MutableTree.set_parent_trees()."""
 
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        for revision_id in revision_ids:
 
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            _mod_revision.check_not_reserved_id(revision_id)
 
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        if len(revision_ids) == 0:
 
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            self._parent_ids = []
 
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            self._basis_tree = self.branch.repository.revision_tree(
 
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                                    _mod_revision.NULL_REVISION)
 
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        else:
 
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            self._parent_ids = revision_ids
 
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            self._basis_tree = self.branch.repository.revision_tree(
 
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                                    revision_ids[0])
 
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            self._branch_revision_id = revision_ids[0]
 
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    def set_parent_trees(self, parents_list, allow_leftmost_as_ghost=False):
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        """See MutableTree.set_parent_trees()."""
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        if len(parents_list) == 0:
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            self._parent_ids = []
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            self._basis_tree = self.branch.repository.revisiontree(None)
 
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            self._basis_tree = self.branch.repository.revision_tree(
 
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                                   _mod_revision.NULL_REVISION)
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        else:
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            if parents_list[0][1] is None and not allow_leftmost_as_ghost:
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                # a ghost in the left most parent
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                raise errors.GhostRevisionUnusableHere(parents_list[0][0])
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            self._parent_ids = [parent_id for parent_id, tree in parents_list]
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            if parents_list[0][1] is None:
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                self._basis_tree = self.branch.repository.revisiontree(None)
 
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            if parents_list[0][1] is None or parents_list[0][1] == 'null:':
 
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                self._basis_tree = self.branch.repository.revision_tree(
 
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                                       _mod_revision.NULL_REVISION)
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            else:
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                self._basis_tree = parents_list[0][1]
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            self._branch_revision_id = parents_list[0][0]