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Current File : //lib/calibre/calibre/spell/__init__.py

#!/usr/bin/env python3


__license__ = 'GPL v3'
__copyright__ = '2014, Kovid Goyal <kovid at kovidgoyal.net>'

from collections import namedtuple

from calibre.utils.localization import canonicalize_lang

DictionaryLocale = namedtuple('DictionaryLocale', 'langcode countrycode')

ccodes, ccodemap, country_names = None, None, None


def get_codes():
    global ccodes, ccodemap, country_names
    if ccodes is None:
        from calibre.utils.serialize import msgpack_loads
        data = msgpack_loads(P('localization/iso3166.calibre_msgpack', allow_user_override=False, data=True))
        ccodes, ccodemap, country_names = data['codes'], data['three_map'], data['names']
    return ccodes, ccodemap


def parse_lang_code(raw):
    raw = raw or ''
    parts = raw.replace('_', '-').split('-')
    lc = canonicalize_lang(parts[0])
    if lc is None:
        raise ValueError('Invalid language code: %r' % raw)
    cc = None
    if len(parts) > 1:
        ccodes, ccodemap = get_codes()[:2]
        q = parts[1].upper()
        if q in ccodes:
            cc = q
        else:
            cc = ccodemap.get(q, None)
    return DictionaryLocale(lc, cc)

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