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86 lines
2.2 KiB
Python
86 lines
2.2 KiB
Python
"""A wrapper for dates."""
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import datetime
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import math
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import apifunction
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import computedobject
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import ee_exception
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import ee_types as types
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import serializer
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# Using lowercase function naming to match the JavaScript names.
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# pylint: disable=g-bad-name
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class Date(computedobject.ComputedObject):
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"""An object to represent dates."""
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_initialized = False
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def __init__(self, date, opt_tz=None):
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"""Construct a date.
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This sends all inputs (except another Date) through the Date function.
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This constuctor accepts the following args:
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1) A bare date.
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2) An ISO string
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3) A integer number of milliseconds since the epoch.
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4) A ComputedObject.
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Args:
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date: The date to wrap.
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opt_tz: An optional timezone, only useable with a string date.
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"""
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self.initialize()
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func = apifunction.ApiFunction('Date')
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args = None
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varName = None
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if isinstance(date, datetime.datetime):
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args = {'value':
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math.floor(serializer.DatetimeToMicroseconds(date) / 1000)}
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elif types.isNumber(date):
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args = {'value': date}
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elif isinstance(date, basestring):
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args = {'value': date}
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if opt_tz:
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if isinstance(opt_tz, basestring):
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args['timeZone'] = opt_tz
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else:
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raise ee_exception.EEException(
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'Invalid argument specified for ee.Date(..., opt_tz): %s' % date)
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elif isinstance(date, computedobject.ComputedObject):
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if date.func != func:
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args = {'value': date}
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else:
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func = date.func
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args = date.args
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varName = date.varName
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else:
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raise ee_exception.EEException(
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'Invalid argument specified for ee.Date(): %s' % date)
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super(Date, self).__init__(func, args, varName)
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self._date = None
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@classmethod
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def initialize(cls):
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"""Imports API functions to this class."""
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if not cls._initialized:
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apifunction.ApiFunction.importApi(cls, 'Date', 'Date')
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cls._initialized = True
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@classmethod
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def reset(cls):
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"""Removes imported API functions from this class."""
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apifunction.ApiFunction.clearApi(cls)
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cls._initialized = False
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@staticmethod
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def name():
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return 'Date'
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