126 lines
3.7 KiB
Python
126 lines
3.7 KiB
Python
# The Mia! Accounting Flask Project.
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# Author: imacat@mail.imacat.idv.tw (imacat), 2023/1/25
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# Copyright (c) 2023 imacat.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""The localization for the accounting application.
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"""
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import json
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from pathlib import Path
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from flask import Flask, Response, Blueprint
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from flask_babel import LazyString, Domain
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from flask_babel_js import JAVASCRIPT, c2js
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translation_dir: Path = Path(__file__).parent / "translations"
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domain: Domain = Domain(translation_directories=[translation_dir],
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domain="accounting")
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def gettext(string, **variables) -> str:
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"""A replacement of the Babel gettext() function..
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:param string: The message to translate.
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:param variables: The variable substitution.
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:return: The translated message.
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"""
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return domain.gettext(string, **variables)
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def pgettext(context, string, **variables) -> str:
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"""A replacement of the Babel gettext() function..
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:param context: The context.
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:param string: The message to translate.
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:param variables: The variable substitution.
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:return: The translated message.
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"""
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return domain.pgettext(context, string, **variables)
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def lazy_gettext(string, **variables) -> LazyString:
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"""A replacement of the Babel lazy_gettext() function..
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:param string: The message to translate.
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:param variables: The variable substitution.
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:return: The translated message.
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"""
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return domain.lazy_gettext(string, **variables)
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def __babel_js_catalog_view() -> Response:
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"""A tweaked view taken from Flask-Babel-JS that returns the messages and
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with the A_() function instead of _().
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:return: The response.
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"""
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js = [
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""""use strict";
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(function() {
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var babel = {};
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babel.catalog = """
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]
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translations = domain.get_translations()
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# Here used to be an isinstance check for NullTranslations, but the
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# translation object that is "merged" by flask-babel is seen as an
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# instance of NullTranslations.
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catalog = translations._catalog.copy()
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# copy()ing the catalog here because we're modifying the original copy.
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for key, value in catalog.copy().items():
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if isinstance(key, tuple):
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text, plural = key
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if text not in catalog:
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catalog[text] = {}
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catalog[text][plural] = value
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del catalog[key]
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js.append(json.dumps(catalog, indent=4))
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js.append(";\n")
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js.append(JAVASCRIPT)
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metadata = translations.gettext("")
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if metadata:
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for m in metadata.splitlines():
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if m.lower().startswith("plural-forms:"):
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js.append(" babel.plural = ")
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js.append(c2js(m.lower().split("plural=")[1].rstrip(';')))
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js.append("""
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window.A_ = babel.gettext;
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})();
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""")
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resp = Response("".join(js))
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resp.headers["Content-Type"] = "text/javascript"
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return resp
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def init_app(app: Flask, bp: Blueprint) -> None:
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"""Initializes the application.
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:param app: The Flask application.
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:param bp: The blueprint of the accounting application.
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:return: None.
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"""
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bp.add_url_rule("/_jstrans.js", "babel_catalog",
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__babel_js_catalog_view)
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app.jinja_env.globals["A_"] = domain.gettext
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