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Diffstat (limited to 'babel/messages/plurals.py')
| -rw-r--r-- | babel/messages/plurals.py | 256 |
1 files changed, 256 insertions, 0 deletions
diff --git a/babel/messages/plurals.py b/babel/messages/plurals.py new file mode 100644 index 0000000..9eb48e5 --- /dev/null +++ b/babel/messages/plurals.py @@ -0,0 +1,256 @@ +# -*- 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 operator import itemgetter +from babel.core import default_locale, Locale + + +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) |