Edit File: plurals.py
# -*- coding: utf-8 -*- # # Copyright (C) 2007 Edgewall Software # All rights reserved. # # This software is licensed as described in the file COPYING, which # you should have received as part of this distribution. The terms # are also available at http://babel.edgewall.org/wiki/License. # # This software consists of voluntary contributions made by many # individuals. For the exact contribution history, see the revision # history and logs, available at http://babel.edgewall.org/log/. """Plural form definitions.""" from babel.core import default_locale, Locale from babel.util import itemgetter LC_CTYPE = default_locale('LC_CTYPE') PLURALS = { # Afar # 'aa': (), # Abkhazian # 'ab': (), # Avestan # 'ae': (), # Afrikaans - From Pootle's PO's 'af': (2, '(n != 1)'), # Akan # 'ak': (), # Amharic # 'am': (), # Aragonese # 'an': (), # Arabic - From Pootle's PO's 'ar': (6, '(n==0 ? 0 : n==1 ? 1 : n==2 ? 2 : n>=3 && n<=10 ? 3 : n>=11 && n<=99 ? 4 : 5)'), # Assamese # 'as': (), # Avaric # 'av': (), # Aymara # 'ay': (), # Azerbaijani # 'az': (), # Bashkir # 'ba': (), # Belarusian # 'be': (), # Bulgarian - From Pootle's PO's 'bg': (2, '(n != 1)'), # Bihari # 'bh': (), # Bislama # 'bi': (), # Bambara # 'bm': (), # Bengali - From Pootle's PO's 'bn': (2, '(n != 1)'), # Tibetan - as discussed in private with Andrew West 'bo': (1, '0'), # Breton # 'br': (), # Bosnian # 'bs': (), # Catalan - From Pootle's PO's 'ca': (2, '(n != 1)'), # Chechen # 'ce': (), # Chamorro # 'ch': (), # Corsican # 'co': (), # Cree # 'cr': (), # Czech 'cs': (3, '(n%10==1 && n%100!=11 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2)'), # Church Slavic # 'cu': (), # Chuvash 'cv': (1, '0'), # Welsh 'cy': (5, '(n==1 ? 1 : n==2 ? 2 : n==3 ? 3 : n==6 ? 4 : 0)'), # Danish 'da': (2, '(n != 1)'), # German 'de': (2, '(n != 1)'), # Divehi # 'dv': (), # Dzongkha 'dz': (1, '0'), # Greek 'el': (2, '(n != 1)'), # English 'en': (2, '(n != 1)'), # Esperanto 'eo': (2, '(n != 1)'), # Spanish 'es': (2, '(n != 1)'), # Estonian 'et': (2, '(n != 1)'), # Basque - From Pootle's PO's 'eu': (2, '(n != 1)'), # Persian - From Pootle's PO's 'fa': (1, '0'), # Finnish 'fi': (2, '(n != 1)'), # French 'fr': (2, '(n > 1)'), # Friulian - From Pootle's PO's 'fur': (2, '(n > 1)'), # Irish 'ga': (3, '(n==1 ? 0 : n==2 ? 1 : 2)'), # Galician - From Pootle's PO's 'gl': (2, '(n != 1)'), # Hausa - From Pootle's PO's 'ha': (2, '(n != 1)'), # Hebrew 'he': (2, '(n != 1)'), # Hindi - From Pootle's PO's 'hi': (2, '(n != 1)'), # Croatian 'hr': (3, '(n%10==1 && n%100!=11 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2)'), # Hungarian 'hu': (1, '0'), # Armenian - From Pootle's PO's 'hy': (1, '0'), # Icelandic - From Pootle's PO's 'is': (2, '(n != 1)'), # Italian 'it': (2, '(n != 1)'), # Japanese 'ja': (1, '0'), # Georgian - From Pootle's PO's 'ka': (1, '0'), # Kongo - From Pootle's PO's 'kg': (2, '(n != 1)'), # Khmer - From Pootle's PO's 'km': (1, '0'), # Korean 'ko': (1, '0'), # Kurdish - From Pootle's PO's 'ku': (2, '(n != 1)'), # Lao - Another member of the Tai language family, like Thai. 'lo': (1, '0'), # Lithuanian 'lt': (3, '(n%10==1 && n%100!=11 ? 0 : n%10>=2 && (n%100<10 || n%100>=20) ? 1 : 2)'), # Latvian 'lv': (3, '(n%10==1 && n%100!=11 ? 0 : n != 0 ? 1 : 2)'), # Maltese - From Pootle's PO's 'mt': (4, '(n==1 ? 0 : n==0 || ( n%100>1 && n%100<11) ? 1 : (n%100>10 && n%100<20 ) ? 2 : 3)'), # Norwegian Bokmål 'nb': (2, '(n != 1)'), # Dutch 'nl': (2, '(n != 1)'), # Norwegian Nynorsk 'nn': (2, '(n != 1)'), # Norwegian 'no': (2, '(n != 1)'), # Punjabi - From Pootle's PO's 'pa': (2, '(n != 1)'), # Polish 'pl': (3, '(n==1 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2)'), # Portuguese 'pt': (2, '(n != 1)'), # Brazilian 'pt_BR': (2, '(n > 1)'), # Romanian - From Pootle's PO's 'ro': (3, '(n==1 ? 0 : (n==0 || (n%100 > 0 && n%100 < 20)) ? 1 : 2)'), # Russian 'ru': (3, '(n%10==1 && n%100!=11 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2)'), # Slovak 'sk': (3, '(n%10==1 && n%100!=11 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2)'), # Slovenian 'sl': (4, '(n%100==1 ? 0 : n%100==2 ? 1 : n%100==3 || n%100==4 ? 2 : 3)'), # Serbian - From Pootle's PO's 'sr': (3, '(n%10==1 && n%100!=11 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2)'), # Southern Sotho - From Pootle's PO's 'st': (2, '(n != 1)'), # Swedish 'sv': (2, '(n != 1)'), # Thai 'th': (1, '0'), # Turkish 'tr': (1, '0'), # Ukrainian 'uk': (3, '(n%10==1 && n%100!=11 ? 0 : n%10>=2 && n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2)'), # Venda - From Pootle's PO's 've': (2, '(n != 1)'), # Vietnamese - From Pootle's PO's 'vi': (1, '0'), # Xhosa - From Pootle's PO's 'xh': (2, '(n != 1)'), # Chinese - From Pootle's PO's 'zh_CN': (1, '0'), 'zh_HK': (1, '0'), 'zh_TW': (1, '0'), } DEFAULT_PLURAL = (2, '(n != 1)') class _PluralTuple(tuple): """A tuple with plural information.""" __slots__ = () num_plurals = property(itemgetter(0), doc=""" The number of plurals used by the locale.""") plural_expr = property(itemgetter(1), doc=""" The plural expression used by the locale.""") plural_forms = property(lambda x: 'npurals=%s; plural=%s' % x, doc=""" The plural expression used by the catalog or locale.""") def __str__(self): return self.plural_forms def get_plural(locale=LC_CTYPE): """A tuple with the information catalogs need to perform proper pluralization. The first item of the tuple is the number of plural forms, the second the plural expression. >>> get_plural(locale='en') (2, '(n != 1)') >>> get_plural(locale='ga') (3, '(n==1 ? 0 : n==2 ? 1 : 2)') The object returned is a special tuple with additional members: >>> tup = get_plural("ja") >>> tup.num_plurals 1 >>> tup.plural_expr '0' >>> tup.plural_forms 'npurals=1; plural=0' Converting the tuple into a string prints the plural forms for a gettext catalog: >>> str(tup) 'npurals=1; plural=0' """ locale = Locale.parse(locale) try: tup = PLURALS[str(locale)] except KeyError: try: tup = PLURALS[locale.language] except KeyError: tup = DEFAULT_PLURAL return _PluralTuple(tup)