lib/python2.7/site-packages/setools/categoryquery.py

# Copyright 2015, Tresys Technology, LLC
#
# This file is part of SETools.
#
# SETools is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as
# published by the Free Software Foundation, either version 2.1 of
# the License, or (at your option) any later version.
#
# SETools 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 Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with SETools.  If not, see
# <http://www.gnu.org/licenses/>.
#
import logging

from . import compquery
from . import mixins


class CategoryQuery(mixins.MatchAlias, compquery.ComponentQuery):

    """
    Query MLS Categories

    Parameter:
    policy       The policy to query.

    Keyword Parameters/Class attributes:
    name         The name of the category to match.
    name_regex   If true, regular expression matching will
                 be used for matching the name.
    alias        The alias name to match.
    alias_regex  If true, regular expression matching
                 will be used on the alias names.
    """

    def results(self):
        """Generator which yields all matching categories."""
        self.log.info("Generating results from {0.policy}".format(self))
        self.log.debug("Name: {0.name!r}, regex: {0.name_regex}".format(self))
        self.log.debug("Alias: {0.alias}, regex: {0.alias_regex}".format(self))

        for cat in self.policy.categories():
            if not self._match_name(cat):
                continue

            if not self._match_alias(cat):
                continue

            yield cat