# Slixmpp: The Slick XMPP Library
# Copyright (C) 2011 Nathanael C. Fritz, Lance J.T. Stout
# This file is part of Slixmpp.
# See the file LICENSE for copying permission.
import datetime as dt
from slixmpp.plugins import BasePlugin, register_plugin
# =====================================================================
# To make it easier for stanzas without direct access to plugin objects
# to use the XEP-0082 utility methods, we will define them as top-level
# functions and then just reference them in the plugin itself.
def parse(time_str):
"""
Convert a string timestamp into a datetime object.
Arguments:
time_str -- A formatted timestamp string.
"""
try:
return dt.datetime.strptime(time_str, '%Y-%m-%dT%H:%M:%S.%f%z')
except ValueError:
return dt.datetime.strptime(time_str, '%Y-%m-%dT%H:%M:%S%z')
def format_date(time_obj):
"""
Return a formatted string version of a date object.
Format:
YYYY-MM-DD
Arguments:
time_obj -- A date or datetime object.
"""
if isinstance(time_obj, dt.datetime):
time_obj = time_obj.date()
return time_obj.isoformat()
def format_time(time_obj):
"""
Return a formatted string version of a time object.
format:
hh:mm:ss[.sss][TZD]
arguments:
time_obj -- A time or datetime object.
"""
if isinstance(time_obj, dt.datetime):
time_obj = time_obj.timetz()
timestamp = time_obj.isoformat()
if time_obj.tzinfo == dt.timezone.utc:
timestamp = timestamp[:-6]
return '%sZ' % timestamp
return timestamp
def format_datetime(time_obj):
"""
Return a formatted string version of a datetime object.
Format:
YYYY-MM-DDThh:mm:ss[.sss]TZD
arguments:
time_obj -- A datetime object.
"""
timestamp = time_obj.isoformat('T')
if time_obj.tzinfo == dt.timezone.utc:
timestamp = timestamp[:-6]
return '%sZ' % timestamp
return timestamp
def date(year=None, month=None, day=None, obj=False):
"""
Create a date only timestamp for the given instant.
Unspecified components default to their current counterparts.
Arguments:
year -- Integer value of the year (4 digits)
month -- Integer value of the month
day -- Integer value of the day of the month.
obj -- If True, return the date object instead
of a formatted string. Defaults to False.
"""
today = dt.datetime.utcnow()
if year is None:
year = today.year
if month is None:
month = today.month
if day is None:
day = today.day
value = dt.date(year, month, day)
if obj:
return value
return format_date(value)
def time(hour=None, min=None, sec=None, micro=None, offset=None, obj=False):
"""
Create a time only timestamp for the given instant.
Unspecified components default to their current counterparts.
Arguments:
hour -- Integer value of the hour.
min -- Integer value of the number of minutes.
sec -- Integer value of the number of seconds.
micro -- Integer value of the number of microseconds.
offset -- Either a positive or negative number of seconds
to offset from UTC to match a desired timezone,
or a tzinfo object.
obj -- If True, return the time object instead
of a formatted string. Defaults to False.
"""
now = dt.datetime.utcnow()
if hour is None:
hour = now.hour
if min is None:
min = now.minute
if sec is None:
sec = now.second
if micro is None:
micro = now.microsecond
if offset in (None, 0):
offset = dt.timezone.utc
elif not isinstance(offset, dt.tzinfo):
offset = dt.timezone(dt.timedelta(seconds=offset))
value = dt.time(hour, min, sec, micro, offset)
if obj:
return value
return format_time(value)
def datetime(year=None, month=None, day=None, hour=None,
min=None, sec=None, micro=None, offset=None,
separators=True, obj=False):
"""
Create a datetime timestamp for the given instant.
Unspecified components default to their current counterparts.
Arguments:
year -- Integer value of the year (4 digits)
month -- Integer value of the month
day -- Integer value of the day of the month.
hour -- Integer value of the hour.
min -- Integer value of the number of minutes.
sec -- Integer value of the number of seconds.
micro -- Integer value of the number of microseconds.
offset -- Either a positive or negative number of seconds
to offset from UTC to match a desired timezone,
or a tzinfo object.
obj -- If True, return the datetime object instead
of a formatted string. Defaults to False.
"""
now = dt.datetime.utcnow()
if year is None:
year = now.year
if month is None:
month = now.month
if day is None:
day = now.day
if hour is None:
hour = now.hour
if min is None:
min = now.minute
if sec is None:
sec = now.second
if micro is None:
micro = now.microsecond
if offset in (None, 0):
offset = dt.timezone.utc
elif not isinstance(offset, dt.tzinfo):
offset = dt.timezone(dt.timedelta(seconds=offset))
value = dt.datetime(year, month, day, hour,
min, sec, micro, offset)
if obj:
return value
return format_datetime(value)
[docs]
class XEP_0082(BasePlugin):
"""
XEP-0082: XMPP Date and Time Profiles
XMPP uses a subset of the formats allowed by ISO 8601 as a matter of
pragmatism based on the relatively few formats historically used by
the XMPP.
Also see <http://www.xmpp.org/extensions/xep-0082.html>.
Methods:
date -- Create a time stamp using the Date profile.
datetime -- Create a time stamp using the DateTime profile.
time -- Create a time stamp using the Time profile.
format_date -- Format an existing date object.
format_datetime -- Format an existing datetime object.
format_time -- Format an existing time object.
parse -- Convert a time string into a Python datetime object.
"""
name = 'xep_0082'
description = 'XEP-0082: XMPP Date and Time Profiles'
dependencies = set()
def plugin_init(self):
"""Start the XEP-0082 plugin."""
self.date = date
self.datetime = datetime
self.time = time
self.format_date = format_date
self.format_datetime = format_datetime
self.format_time = format_time
self.parse = parse
register_plugin(XEP_0082)