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  • Committer: Robert Collins
  • Date: 2007-10-05 02:41:37 UTC
  • mto: (2592.3.166 repository)
  • mto: This revision was merged to the branch mainline in revision 2896.
  • Revision ID: robertc@robertcollins.net-20071005024137-kn7brcu07nu8cwl1
* The class ``bzrlib.repofmt.knitrepo.KnitRepository3`` has been folded into
  ``KnitRepository`` by parameters to the constructor. (Robert Collins)
* ``bzrlib.xml_serializer.Serializer`` is now responsible for checking that
  mandatory attributes are present on serialisation and deserialisation.
  This fixes some holes in API usage and allows better separation between
  physical storage and object serialisation. (Robert Collins)

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revspec.py
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# Copyright (C) 2009 Jelmer Vernooij <jelmer@samba.org>
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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 3 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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"""Custom revision specifier for Subversion."""
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from bzrlib.errors import (
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    BzrError,
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    InvalidRevisionId,
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    InvalidRevisionSpec,
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    NoSuchRevision,
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    )
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from bzrlib.revisionspec import (
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    RevisionInfo,
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    RevisionSpec,
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    )
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from bzrlib.plugins.git import (
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    lazy_check_versions,
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    )
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from bzrlib.plugins.git.mapping import (
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    mapping_registry,
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    )
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class RevisionSpec_git(RevisionSpec):
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    """Selects a revision using a Subversion revision number."""
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    help_txt = """Selects a revision using a Git revision sha1.
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    """
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    prefix = 'git:'
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    def _lookup_git_sha1(self, branch, sha1):
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        bzr_revid = branch.mapping.revision_id_foreign_to_bzr(git_sha1)
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        if branch.repository.has_revision(bzr_revid):
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            history = self._history(branch, bzr_revid)
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            return RevisionInfo.from_revision_id(branch, bzr_revid, history)
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        raise InvalidRevisionSpec(self.user_spec, branch)
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    def _history(self, branch, revid):
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        history = list(branch.repository.iter_reverse_revision_history(revid))
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        history.reverse()
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        return history
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    def _find_short_git_sha1(self, branch, sha1):
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        parse_revid = getattr(branch.repository, "lookup_git_revid",
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                              mapping_registry.parse_revision_id)
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        branch.repository.lock_read()
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        try:
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            graph = branch.repository.get_graph()
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            for revid, _ in graph.iter_ancestry([branch.last_revision()]):
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                try:
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                    foreign_revid, mapping = parse_revid(revid)
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                except InvalidRevisionId:
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                    continue
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                if foreign_revid.startswith(sha1):
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                    history = self._history(branch, revid)
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                    return RevisionInfo.from_revision_id(branch, revid, history)
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            raise InvalidRevisionSpec(self.user_spec, branch)
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        finally:
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            branch.repository.unlock()
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    def _match_on(self, branch, revs):
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        lazy_check_versions()
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        loc = self.spec.find(':')
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        git_sha1 = self.spec[loc+1:].encode("utf-8")
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        if len(git_sha1) == 40:
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            return self._lookup_git_sha1(branch, git_sha1)
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        elif len(git_sha1) > 40:
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            raise InvalidRevisionSpec(self.user_spec, branch)
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        else:
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            return self._find_short_git_sha1(branch, git_sha1)
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    def needs_branch(self):
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        return True
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    def get_branch(self):
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        return None