How to use the xandikos.webdav.ET function in xandikos

# 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.

"""CardDAV support.

https://tools.ietf.org/html/rfc6352
"""
from xandikos import (
    collation as _mod_collation,
    davcommon,
    webdav,
)

ET = webdav.ET

WELLKNOWN_CARDDAV_PATH = "/.well-known/carddav"

NAMESPACE = 'urn:ietf:params:xml:ns:carddav'
ADDRESSBOOK_RESOURCE_TYPE = '{%s}addressbook' % NAMESPACE

# Feature to advertise presence of CardDAV support
FEATURE = 'addressbook'


class AddressbookHomeSetProperty(webdav.Property):
    """addressbook-home-set property

    See https://tools.ietf.org/html/rfc6352, section 7.1.1
    """

# 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.

"""Server info.

See https://www.ietf.org/archive/id/draft-douglass-server-info-03.txt
"""

import hashlib

from xandikos import version_string
from xandikos import webdav

ET = webdav.ET

# Feature to advertise server-info support.
FEATURE = 'server-info'
SERVER_INFO_MIME_TYPE = 'application/server-info+xml'


class ServerInfo(object):
    """Server info."""

    def __init__(self):
        self._token = None
        self._features = []
        self._applications = []

    def add_feature(self, feature):
        self._features.append(feature)

#
# 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.

"""Common functions for DAV implementations."""

from xandikos import webdav

ET = webdav.ET


class SubbedProperty(webdav.Property):
    """Property with sub-components that can be queried."""

    async def get_value_ext(self, href, resource, el, environ, requested):
        """Get the value of a data property.

        :param href: Resource href
        :param resource: Resource to get value for
        :param el: Element to fill in
        :param environ: WSGI environ dict
        :param requested: Requested property (including subelements)
        """
        raise NotImplementedError(self.get_value_ext)

https://tools.ietf.org/html/rfc4791
"""
import datetime
import itertools
import pytz

from .icalendar import (
    apply_time_range_vevent,
    as_tz_aware_ts,
)
from icalendar.cal import component_factory, Calendar as ICalendar, FreeBusy
from icalendar.prop import vDDDTypes, vPeriod, LocalTimezone

from xandikos import davcommon, webdav

ET = webdav.ET

PRODID = '-//Jelmer Vernooij//Xandikos//EN'
WELLKNOWN_CALDAV_PATH = "/.well-known/caldav"
EXTENDED_MKCOL_FEATURE = 'extended-mkcol'

NAMESPACE = 'urn:ietf:params:xml:ns:caldav'

# https://tools.ietf.org/html/rfc4791, section 4.2
CALENDAR_RESOURCE_TYPE = '{%s}calendar' % NAMESPACE

SUBSCRIPTION_RESOURCE_TYPE = '{http://calendarserver.org/ns/}subscribed'

# TODO(jelmer): These resource types belong in scheduling.py
SCHEDULE_INBOX_RESOURCE_TYPE = '{%s}schedule-inbox' % NAMESPACE
SCHEDULE_OUTBOX_RESOURCE_TYPE = '{%s}schedule-outbox' % NAMESPACE

# 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.

"""Access control.

See http://www.webdav.org/specs/rfc3744.html
"""

from xandikos import webdav

ET = webdav.ET

# Feature to advertise access control support.
FEATURE = 'access-control'


class CurrentUserPrivilegeSetProperty(webdav.Property):
    """current-user-privilege-set property

    See http://www.webdav.org/specs/rfc3744.html, section 3.7
    """

    name = '{DAV:}current-user-privilege-set'
    in_allprops = False
    live = True

    def get_value(self, href, resource, el, environ):

# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA  02110-1301, USA.

"""Calendar synchronisation.

See https://tools.ietf.org/html/rfc6578
"""

import itertools

import urllib.parse

from xandikos import webdav

ET = webdav.ET


FEATURE = 'sync-collection'


class SyncToken(object):
    """A sync token wrapper."""

    def __init__(self, token):
        self.token = token

    def aselement(self):
        ret = ET.Element('{DAV:}sync-token')
        ret.text = self.token
        return ret