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# Copyright (C) 2004, 2005 by 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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# TODO: This could be done *much* more efficiently by just copying
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# all the whole weaves and revisions, rather than getting one
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# TODO: Do we really need to invoke merge() to build the working directory?
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# That seems a bit of an abstraction inversion.
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from bzrlib.merge import merge
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from bzrlib.branch import Branch
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from bzrlib.trace import mutter
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def copy_branch(branch_from, to_location, revision=None, basis_branch=None):
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"""Copy branch_from into the existing directory to_location.
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If not None, only revisions up to this point will be copied.
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The head of the new branch will be that revision. Must be a
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The name of a local directory that exists but is empty.
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The revision to copy up to
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A local branch to copy revisions from, related to branch_from
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assert isinstance(branch_from, Branch)
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assert isinstance(to_location, basestring)
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br_to = Branch.initialize(to_location)
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mutter("copy branch from %s to %s", branch_from, br_to)
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if basis_branch is not None:
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basis_branch.push_stores(br_to)
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br_to.set_root_id(branch_from.get_root_id())
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revision = branch_from.last_revision()
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br_to.update_revisions(branch_from, stop_revision=revision)
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merge((to_location, -1), (to_location, 0), this_dir=to_location,
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check_clean=False, ignore_zero=True)
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br_to.set_parent(branch_from.base)
added
removed
bzrlib/clone.py
