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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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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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"""MemoryTree object.
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from copy import deepcopy
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from bzrlib import errors, mutabletree
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from bzrlib.decorators import needs_read_lock, needs_write_lock
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revision as _mod_revision,
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from bzrlib.decorators import needs_read_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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from bzrlib.transport.memory import MemoryTransport
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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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This implementation does not care about the file kind of
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missing files, so is a no-op.
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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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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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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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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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return 'missing', None, None, None
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bytes = self._file_transport.get_bytes(path)
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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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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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return entry.text_size
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def get_parent_ids(self):
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"""See Tree.get_parent_ids.
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def _populate_from_branch(self):
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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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self._parent_ids = [self._branch_revision_id]
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self._inventory = deepcopy(self._basis_tree._inventory)
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self._inventory = self._basis_tree._inventory._get_mutable_inventory()
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self._file_transport = MemoryTransport()
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# TODO copy the revision trees content, or do it lazy, or something.
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inventory_entries = self._inventory.iter_entries()
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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(None)
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self._branch_revision_id = _mod_revision.NULL_REVISION
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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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self._branch_revision_id = revision_ids[0]
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self._allow_leftmost_as_ghost = allow_leftmost_as_ghost
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def _set_basis(self):
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self._basis_tree = self.branch.repository.revision_tree(
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self._branch_revision_id)
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except errors.NoSuchRevision:
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if self._allow_leftmost_as_ghost:
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self._basis_tree = self.branch.repository.revision_tree(
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_mod_revision.NULL_REVISION)
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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.revision_tree(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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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.revision_tree(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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self._basis_tree = parents_list[0][1]
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self._branch_revision_id = parents_list[0][0]