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https://gitlab.archlinux.org/archlinux/aurweb.git
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45fbf214b4
The possibly plural version of `tr`, `tn` provides a way to translate
strings into singular or plural form based on a given integer
being 1 or not 1.
Example use:
```
{{ 1 | tn("%d package found.", "%d packages found.") | format(1) }}
```
Signed-off-by: Kevin Morris <kevr@0cost.org>
113 lines
3.1 KiB
Python
113 lines
3.1 KiB
Python
import gettext
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import typing
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from collections import OrderedDict
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from fastapi import Request
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from jinja2 import pass_context
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import aurweb.config
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SUPPORTED_LANGUAGES = OrderedDict({
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"ar": "العربية",
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"ast": "Asturianu",
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"ca": "Català",
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"cs": "Český",
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"da": "Dansk",
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"de": "Deutsch",
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"el": "Ελληνικά",
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"en": "English",
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"es": "Español",
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"es_419": "Español (Latinoamérica)",
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"fi": "Suomi",
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"fr": "Français",
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"he": "עברית",
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"hr": "Hrvatski",
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"hu": "Magyar",
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"it": "Italiano",
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"ja": "日本語",
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"nb": "Norsk",
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"nl": "Nederlands",
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"pl": "Polski",
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"pt_BR": "Português (Brasil)",
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"pt_PT": "Português (Portugal)",
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"ro": "Română",
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"ru": "Русский",
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"sk": "Slovenčina",
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"sr": "Srpski",
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"tr": "Türkçe",
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"uk": "Українська",
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"zh_CN": "简体中文",
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"zh_TW": "正體中文"
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})
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class Translator:
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def __init__(self):
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self._localedir = aurweb.config.get('options', 'localedir')
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self._translator = {}
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def get_translator(self, lang: str):
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if lang not in self._translator:
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self._translator[lang] = gettext.translation("aurweb",
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self._localedir,
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languages=[lang],
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fallback=True)
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return self._translator.get(lang)
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def translate(self, s: str, lang: str):
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return self.get_translator(lang).gettext(s)
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# Global translator object.
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translator = Translator()
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def get_request_language(request: Request):
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if request.user.is_authenticated():
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return request.user.LangPreference
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default_lang = aurweb.config.get("options", "default_lang")
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return request.cookies.get("AURLANG", default_lang)
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def get_raw_translator_for_request(request: Request):
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lang = get_request_language(request)
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return translator.get_translator(lang)
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def get_translator_for_request(request: Request):
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"""
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Determine the preferred language from a FastAPI request object and build a
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translator function for it.
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"""
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lang = get_request_language(request)
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def translate(message):
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return translator.translate(message, lang)
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return translate
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@pass_context
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def tr(context: typing.Any, value: str):
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""" A translation filter; example: {{ "Hello" | tr("de") }}. """
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_ = get_translator_for_request(context.get("request"))
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return _(value)
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@pass_context
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def tn(context: typing.Dict[str, typing.Any], count: int,
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singular: str, plural: str) -> str:
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""" A singular and plural translation filter.
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Example:
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{{ some_integer | tn("singular %d", "plural %d") }}
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:param context: Response context
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:param count: The number used to decide singular or plural state
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:param singular: The singular translation
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:param plural: The plural translation
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:return: Translated string
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"""
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gettext = get_raw_translator_for_request(context.get("request"))
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return gettext.ngettext(singular, plural, count)
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