anki/ts/lib/i18n/utils.ts
Abdo 20d9a26a8c
Strip isolation chars from deck options warnings to fix RTL display (#1457)
Co-authored-by: Damien Elmes <dae@users.noreply.github.com>
2021-10-26 20:11:25 +10:00

92 lines
2.5 KiB
TypeScript

// Copyright: Ankitects Pty Ltd and contributors
// License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
import "intl-pluralrules";
import { FluentBundle, FluentResource } from "@fluent/bundle";
import { firstLanguage, setBundles } from "./bundles";
import type { ModuleName } from "./modules";
export function supportsVerticalText(): boolean {
const firstLang = firstLanguage();
return (
firstLang.startsWith("ja") ||
firstLang.startsWith("zh") ||
firstLang.startsWith("ko")
);
}
export function direction(): string {
const firstLang = firstLanguage();
if (
firstLang.startsWith("ar") ||
firstLang.startsWith("he") ||
firstLang.startsWith("fa")
) {
return "rtl";
} else {
return "ltr";
}
}
export function weekdayLabel(n: number): string {
const firstLang = firstLanguage();
const now = new Date();
const daysFromToday = -now.getDay() + n;
const desiredDay = new Date(now.getTime() + daysFromToday * 86_400_000);
return desiredDay.toLocaleDateString(firstLang, {
weekday: "narrow",
});
}
let langs: string[] = [];
export function toLocaleString(
date: Date,
options?: Intl.DateTimeFormatOptions,
): string {
return date.toLocaleDateString(langs, options);
}
export function localeCompare(
first: string,
second: string,
options?: Intl.CollatorOptions,
): number {
return first.localeCompare(second, langs, options);
}
/// Treat text like HTML, merging multiple spaces and converting
/// newlines to spaces.
export function withCollapsedWhitespace(s: string): string {
return s.replace(/\s+/g, " ");
}
export function withoutUnicodeIsolation(s: string): string {
return s.replace(/[\u2068-\u2069]+/g, "");
}
export async function setupI18n(args: { modules: ModuleName[] }): Promise<void> {
const resp = await fetch("/_anki/i18nResources", {
method: "POST",
body: JSON.stringify(args),
});
if (!resp.ok) {
throw Error(`unexpected reply: ${resp.statusText}`);
}
const json = await resp.json();
const newBundles: FluentBundle[] = [];
for (const i in json.resources) {
const text = json.resources[i];
const lang = json.langs[i];
const bundle = new FluentBundle([lang, "en-US"]);
const resource = new FluentResource(text);
bundle.addResource(resource);
newBundles.push(bundle);
}
setBundles(newBundles);
langs = json.langs;
}