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  • Committer: Martin Pool
  • Date: 2005-09-29 12:20:42 UTC
  • mto: (1185.12.2) (1393.1.12)
  • mto: This revision was merged to the branch mainline in revision 1396.
  • Revision ID: mbp@sourcefrog.net-20050929122042-8b647796489a06eb
- move copy_branch into bzrlib.clone

  it's not tightly coupled to the Branch class in bzrlib.branch

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Lines of Context:
bzrlib/branch.py
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    return gen_file_id('TREE_ROOT')
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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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    revision
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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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        revid or None.
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    to_location
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        The name of a local directory that exists but is empty.
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    revno
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        The revision to copy up to
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    basis_branch
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        A local branch to copy revisions from, related to branch_from
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    """
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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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    # revision at a time.
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    from bzrlib.merge import merge
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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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    if revision is None:
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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)
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    mutter("copied")
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    return br_to