import re from django import template from django.utils import translation from django.template import defaultfilters register = template.Library() def _numdict(s): return dict([(unicode(num), code) for num, code in enumerate(s)]) LANGUAGE_DIGITS = { 'ar': _numdict(u'\u0660\u0661\u0662\u0663\u0664\u0665\u0666\u0667\u0668\u0669'), 'fa': _numdict(u'\u06f0\u06f1\u06f2\u06f3\u06f4\u06f5\u06f6\u06f7\u06f8\u06f9'), } digit = re.compile('\d') def i18n_digits(uc_str, lang=None): """ Translate the digits a unicode string into the digits used in the given language. If no language is given, the language code from the current language is used. """ if lang is None: lang = translation.get_language() if lang not in LANGUAGE_DIGITS: return uc_str table = LANGUAGE_DIGITS[lang] def replace_digit(m): return table[m.group()] return digit.sub(replace_digit, uc_str) i18n_digits = defaultfilters.stringfilter(i18n_digits) register.filter('i18n_digits', i18n_digits)