# Copyright 2007 Google Inc.
#
# This program 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.
#
# This program 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 this program; if not, write to the Free Software Foundation,
# Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
"""An implementation of an automount map for nsscache.

AutomountMap:  An implementation of NSS automount maps based on the Map
class.

AutomountMapEntry:  A automount map entry based on the MapEntry class.
"""

__author__ = 'vasilios@google.com (Vasilios Hoffman)'

from nss_cache.maps import maps


class AutomountMap(maps.Map):
    """This class represents an NSS automount map.

    Map data is stored as a list of MapEntry objects, see the abstract
    class Map.
    """

    def __init__(self, iterable=None):
        """Construct a AutomountMap object using optional iterable."""
        super(AutomountMap, self).__init__(iterable)

    def Add(self, entry):
        """Add a new object, verify it is a AutomountMapEntry object."""
        if not isinstance(entry, AutomountMapEntry):
            raise TypeError('Entry is not an AutomountMapEntry: %r' % entry)
        return super(AutomountMap, self).Add(entry)


class AutomountMapEntry(maps.MapEntry):
    """This class represents NSS automount map entries."""
    __slots__ = ('key', 'location', 'options')
    _KEY = 'key'
    _ATTRS = ('key', 'location', 'options')

    def __init__(self, data=None):
        """Construct a AutomountMapEntry."""
        self.key = None
        self.location = None
        self.options = None

        super(AutomountMapEntry, self).__init__(data)
