92 lines
2.7 KiB
Rust
92 lines
2.7 KiB
Rust
// SPDX-License-Identifier: GPL-3.0-only
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use std::str::FromStr;
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use i18n_embed::{
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fluent::{fluent_language_loader, FluentLanguageLoader},
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DefaultLocalizer, LanguageLoader, Localizer,
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};
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use icu::locid::Locale;
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use icu_collator::{Collator, CollatorOptions, Numeric};
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use icu_provider::DataLocale;
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use once_cell::sync::Lazy;
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use rust_embed::RustEmbed;
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#[derive(RustEmbed)]
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#[folder = "i18n/"]
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struct Localizations;
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pub static LANGUAGE_LOADER: Lazy<FluentLanguageLoader> = Lazy::new(|| {
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let loader: FluentLanguageLoader = fluent_language_loader!();
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loader
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.load_fallback_language(&Localizations)
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.expect("Error while loading fallback language");
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loader
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});
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pub static LANGUAGE_SORTER: Lazy<Collator> = Lazy::new(|| {
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let mut options = CollatorOptions::new();
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options.numeric = Some(Numeric::On);
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DataLocale::from_str(&LANGUAGE_LOADER.current_language().to_string())
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.or_else(|_| DataLocale::from_str(&LANGUAGE_LOADER.fallback_language().to_string()))
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.ok()
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.and_then(|locale| Collator::try_new(&locale, options).ok())
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.or_else(|| {
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let locale = DataLocale::from_str("en-US").expect("en-US is a valid BCP-47 tag");
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Collator::try_new(&locale, options).ok()
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})
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.expect("Creating a collator from the system's current language, the fallback language, or American English should succeed")
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});
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pub static LOCALE: Lazy<Locale> = Lazy::new(|| {
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fn get_local() -> Result<Locale, Box<dyn std::error::Error>> {
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let locale = std::env::var("LC_TIME").or_else(|_| std::env::var("LANG"))?;
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let locale = locale
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.split('.')
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.next()
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.ok_or(format!("Can't split the locale {locale}"))?;
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let locale = Locale::from_str(locale).map_err(|e| format!("{e:?}"))?;
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Ok(locale)
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}
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match get_local() {
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Ok(locale) => locale,
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Err(e) => {
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log::error!("can't get locale {e}");
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Locale::default()
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}
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}
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});
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#[macro_export]
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macro_rules! fl {
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($message_id:literal) => {{
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i18n_embed_fl::fl!($crate::localize::LANGUAGE_LOADER, $message_id)
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}};
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($message_id:literal, $($args:expr),*) => {{
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i18n_embed_fl::fl!($crate::localize::LANGUAGE_LOADER, $message_id, $($args), *)
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}};
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}
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// Get the `Localizer` to be used for localizing this library.
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pub fn localizer() -> Box<dyn Localizer> {
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Box::from(DefaultLocalizer::new(&*LANGUAGE_LOADER, &Localizations))
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}
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pub fn localize() {
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let localizer = localizer();
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let requested_languages = i18n_embed::DesktopLanguageRequester::requested_languages();
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if let Err(error) = localizer.select(&requested_languages) {
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eprintln!("Error while loading language for App List {}", error);
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}
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}
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