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bazarr/libs/babelfish/country.py

107 lines
3.2 KiB
Python

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