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  • Committer: Canonical.com Patch Queue Manager
  • Date: 2011-03-03 06:02:49 UTC
  • mfrom: (5672.1.7 branch-revs-to-fetch)
  • Revision ID: pqm@pqm.ubuntu.com-20110303060249-l2zou9i59742nrqf
(spiv) Add Branch.heads_to_fetch API and HPSS request. (Andrew Bennetts)

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bzrlib/branch.py
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        else:
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            raise AssertionError("invalid heads: %r" % (heads,))
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    def heads_to_fetch(self):
 
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        """Return the heads that must and that should be fetched to copy this
 
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        branch into another repo.
 
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        :returns: a 2-tuple of (must_fetch, if_present_fetch).  must_fetch is a
 
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            set of heads that must be fetched.  if_present_fetch is a set of
 
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            heads that must be fetched if present, but no error is necessary if
 
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            they are not present.
 
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        """
 
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        # For bzr native formats must_fetch is just the tip, and if_present_fetch
 
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        # are the tags.
 
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        must_fetch = set([self.last_revision()])
 
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        try:
 
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            if_present_fetch = set(self.tags.get_reverse_tag_dict())
 
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        except errors.TagsNotSupported:
 
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            if_present_fetch = set()
 
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        must_fetch.discard(_mod_revision.NULL_REVISION)
 
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        if_present_fetch.discard(_mod_revision.NULL_REVISION)
 
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        return must_fetch, if_present_fetch
 
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class BranchFormat(controldir.ControlComponentFormat):
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    """An encapsulation of the initialization and open routines for a format.