1
# Copyright (C) 2004, 2005 by Canonical Ltd
3
# This program is free software; you can redistribute it and/or modify
4
# it under the terms of the GNU General Public License as published by
5
# the Free Software Foundation; either version 2 of the License, or
6
# (at your option) any later version.
8
# This program is distributed in the hope that it will be useful,
9
# but WITHOUT ANY WARRANTY; without even the implied warranty of
10
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11
# GNU General Public License for more details.
13
# You should have received a copy of the GNU General Public License
14
# along with this program; if not, write to the Free Software
15
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17
# TODO: This could be done *much* more efficiently by just copying
18
# all the whole weaves and revisions, rather than getting one
24
from bzrlib.merge import build_working_dir
25
from bzrlib.branch import Branch
26
from bzrlib.trace import mutter
29
def copy_branch(branch_from, to_location, revision=None, basis_branch=None):
30
"""Copy branch_from into the existing directory to_location.
33
If not None, only revisions up to this point will be copied.
34
The head of the new branch will be that revision. Must be a
37
to_location -- The destination directory; must either exist and be
38
empty, or not exist, in which case it is created.
41
The revision to copy up to
44
A local branch to copy revisions from, related to branch_from
46
assert isinstance(branch_from, Branch)
47
assert isinstance(to_location, basestring)
48
if not os.path.exists(to_location):
50
br_to = Branch.initialize(to_location)
51
mutter("copy branch from %s to %s", branch_from, br_to)
52
if basis_branch is not None:
53
basis_branch.push_stores(br_to)
54
br_to.set_root_id(branch_from.get_root_id())
56
revision = branch_from.last_revision()
57
br_to.update_revisions(branch_from, stop_revision=revision)
58
build_working_dir(to_location)
59
br_to.set_parent(branch_from.base)