root/trunk/languages/make_language_names.py

#!/usr/bin/env python

LANGUAGE_NAMES_PY_FILE = 'conf/language_names.py'

# Need to ensure that the i18n framework is enabled
from django.conf import settings
settings.configure(USE_I18N = True)

from django.utils import translation

def make_language_names(target=None):
    """
    Create a .py file with three variables:
    * language_names = ({'language_code': 'de',
                         'name': 'German',
                         'name_local': 'Deutsch'}, ...)
    * language_names_dict = {'de': {'name': 'German',
                                    'name_local': 'Deutsch'}, ...}
    * language_choices = (('de', 'Deutsch'), ...)

    ``target`` is the .py file path to write the definitions in.  The default
    path is django/conf/language_names.py, and the django/ directory is looked
    up from the module import paths.
    """
    if target is None:
        from os.path import join, abspath
        from imp import find_module
        django_root = find_module('django')[1]
        target = abspath(join(django_root, LANGUAGE_NAMES_PY_FILE))
    language_names = []
    for code, name in settings.LANGUAGES:
        try:
            translation.activate(code)
        except IndexError:
            print "Warning: Can't activate language %r, " \
                  "using English name %r." % (code, name)
            translation.activate('en')
        language_dict = dict(language_code=code,
                             name=name,
                             name_local=translation.ugettext(name))
        language_names.append(language_dict)

    f = file(target, 'w')
    print 'Writing language names list to\n%s' % target
    f.write('language_names = %r\n' % (tuple(language_names),))

    language_names_dict = dict(
        (l['language_code'], dict(name=l['name'], name_local=l['name_local']))
        for l in language_names)
    print 'Writing language names dict to\n%s' % target
    f.write('language_names_dict = %r\n' % language_names_dict)

    language_choices = tuple(
        (l['language_code'], l['name_local'])
        for l in language_names)
    print 'Writing language choices tuple to\n%s' % target
    f.write('language_choices = %r\n' % (language_choices,))

    f.close()

    print 'Done.'


if __name__ == "__main__":
    make_language_names()