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# Copyright (C) 2009 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, see <http://www.gnu.org/licenses/>.
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"""An object that maps git ref names to bzr branch names. Note that it is not
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used to map git ref names to bzr tag names."""
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from __future__ import absolute_import
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class BranchMapper(object):
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_GIT_TRUNK_RE = re.compile('(?:git-)*trunk')
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def git_to_bzr(self, ref_name):
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"""Map a git reference name to a Bazaar branch name.
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parts = ref_name.split('/')
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if parts[0] == 'refs':
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category = parts.pop(0)
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if category == 'heads':
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git_name = '/'.join(parts)
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bazaar_name = self._git_to_bzr_name(git_name)
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if category == 'remotes' and parts[0] == 'origin':
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git_name = '/'.join(parts)
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if category.endswith('s'):
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category = category[:-1]
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name_no_ext = self._git_to_bzr_name(git_name)
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bazaar_name = "%s.%s" % (name_no_ext, category)
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def _git_to_bzr_name(self, git_name):
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# Make a simple name more bzr-like, by mapping git 'master' to bzr 'trunk'.
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# To avoid collision, map git 'trunk' to bzr 'git-trunk'. Likewise
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# 'git-trunk' to 'git-git-trunk' and so on, such that the mapping is
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# one-to-one in both directions.
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if git_name == 'master':
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elif self._GIT_TRUNK_RE.match(git_name):
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bazaar_name = 'git-%s' % (git_name,)
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bazaar_name = git_name