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Viewing changes to bzrlib/repofmt/pack_repo.py

Raise an error on duplicate pack name allocation.

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bzrlib/repofmt/pack_repo.py
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        """
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        self.ensure_loaded()
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        if a_new_pack.name in self._names:
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            # a collision with the packs we know about (not the only possible
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            # collision, see NewPack.finish() for some discussion). Remove our
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            # prior reference to it.
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            self._remove_pack_from_memory(a_new_pack)
 
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            raise errors.BzrError(
 
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                'Pack %r already exists in %s' % (a_new_pack.name, self))
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        self._names[a_new_pack.name] = tuple(a_new_pack.index_sizes)
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        self.add_pack_to_memory(a_new_pack)
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