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107 lines
3.1 KiB
107 lines
3.1 KiB
6 years ago
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# -*- coding: utf-8 -*-
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#
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# Copyright (c) 2013 the BabelFish authors. All rights reserved.
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# Use of this source code is governed by the 3-clause BSD license
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# that can be found in the LICENSE file.
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#
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from collections import namedtuple
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from functools import partial
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from pkg_resources import resource_stream # @UnresolvedImport
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from .converters import ConverterManager
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from . import basestr
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COUNTRIES = {}
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COUNTRY_MATRIX = []
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#: The namedtuple used in the :data:`COUNTRY_MATRIX`
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IsoCountry = namedtuple('IsoCountry', ['name', 'alpha2'])
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f = resource_stream('babelfish', 'data/iso-3166-1.txt')
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f.readline()
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for l in f:
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iso_country = IsoCountry(*l.decode('utf-8').strip().split(';'))
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COUNTRIES[iso_country.alpha2] = iso_country.name
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COUNTRY_MATRIX.append(iso_country)
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f.close()
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class CountryConverterManager(ConverterManager):
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""":class:`~babelfish.converters.ConverterManager` for country converters"""
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entry_point = 'babelfish.country_converters'
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internal_converters = ['name = babelfish.converters.countryname:CountryNameConverter']
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country_converters = CountryConverterManager()
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class CountryMeta(type):
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"""The :class:`Country` metaclass
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Dynamically redirect :meth:`Country.frommycode` to :meth:`Country.fromcode` with the ``mycode`` `converter`
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"""
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def __getattr__(cls, name):
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if name.startswith('from'):
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return partial(cls.fromcode, converter=name[4:])
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return type.__getattribute__(cls, name)
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class Country(CountryMeta(str('CountryBase'), (object,), {})):
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"""A country on Earth
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A country is represented by a 2-letter code from the ISO-3166 standard
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:param string country: 2-letter ISO-3166 country code
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"""
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def __init__(self, country):
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if country not in COUNTRIES:
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raise ValueError('%r is not a valid country' % country)
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#: ISO-3166 2-letter country code
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self.alpha2 = country
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@classmethod
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def fromcode(cls, code, converter):
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"""Create a :class:`Country` by its `code` using `converter` to
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:meth:`~babelfish.converters.CountryReverseConverter.reverse` it
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:param string code: the code to reverse
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:param string converter: name of the :class:`~babelfish.converters.CountryReverseConverter` to use
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:return: the corresponding :class:`Country` instance
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:rtype: :class:`Country`
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"""
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return cls(country_converters[converter].reverse(code))
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def __getstate__(self):
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return self.alpha2
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def __setstate__(self, state):
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self.alpha2 = state
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def __getattr__(self, name):
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try:
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return country_converters[name].convert(self.alpha2)
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except KeyError:
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raise AttributeError(name)
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def __hash__(self):
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return hash(self.alpha2)
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def __eq__(self, other):
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if isinstance(other, basestr):
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return str(self) == other
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if not isinstance(other, Country):
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return False
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return self.alpha2 == other.alpha2
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def __ne__(self, other):
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return not self == other
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def __repr__(self):
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return '<Country [%s]>' % self
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def __str__(self):
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return self.alpha2
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