#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# Author: C. BERGERON -
#
# Note: None
#
#
# (C) Copyright 1996-2016 ECMWF.
#
# This software is licensed under the terms of the Apache Licence Version 2.0
# which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
# In applying this licence, ECMWF does not waive the privileges and immunities
# granted to it by virtue of its status as an intergovernmental organisation nor
# does it submit to any jurisdiction.
#

from utils import functions as fct

from Cfbasicvar import Cfbasicvar


class Cfgridmappingvar(Cfbasicvar):

    @staticmethod
    def define(variables, logger):

        identifiedvars = {}
        comment = "This is a CF grid mapping variable"

        for varname, varclass in variables.iteritems():

            attr = getattr(varclass, 'grid_mapping', None)

            if attr:

                try:
                    klass = Cfgridmappingvar(attr, variables[attr])
                    klass.comment = comment
                    identifiedvars[attr] = klass
                except:
                    pass

        return identifiedvars
