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# util.py -- Utility functions
# Copyright (C) 2008 Canonical Ltd.
#
# This file is part of bzr-builddeb.
#
# bzr-builddeb is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# bzr-builddeb is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with bzr-builddeb; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
from bzrlib.errors import NoSuchTag
from bzrlib.revisionspec import RevisionSpec, RevisionInfo
from bzrlib.plugins.builddeb.errors import (
UnknownVersion,
VersionNotSpecified,
)
class RevisionSpec_package(RevisionSpec):
"""Selects a revision based on the version of the package."""
help_txt = """Selects the revision corresponding to a version of a package.
Given a package version number this revision specifier will allow you
specify the revision corresponding to the upload of that version of
the package.
"""
prefix = 'package:'
def _match_on(self, branch, revs):
version_spec = self.spec
dist_spec = None
if version_spec == '':
raise VersionNotSpecified
try:
revision_id = branch.tags.lookup_tag(version_spec)
return RevisionInfo.from_revision_id(branch,
revision_id, revs)
except NoSuchTag:
raise UnknownVersion(version_spec)
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