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Diffstat (limited to 'slixmpp/plugins/xep_0082.py')
| -rw-r--r-- | slixmpp/plugins/xep_0082.py | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/slixmpp/plugins/xep_0082.py b/slixmpp/plugins/xep_0082.py new file mode 100644 index 00000000..24436622 --- /dev/null +++ b/slixmpp/plugins/xep_0082.py @@ -0,0 +1,228 @@ +""" + 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 +from slixmpp.thirdparty import tzutc, tzoffset, parse_iso + + +# ===================================================================== +# 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. + """ + return parse_iso(time_str) + + +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 == tzutc(): + 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 == tzutc(): + 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 is None: + offset = tzutc() + elif not isinstance(offset, dt.tzinfo): + offset = tzoffset(None, 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 is None: + offset = tzutc() + elif not isinstance(offset, dt.tzinfo): + offset = tzoffset(None, offset) + + value = dt.datetime(year, month, day, hour, + min, sec, micro, offset) + if obj: + return value + return format_datetime(value) + + +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) |