initialised with COSMIC app template

src/i18n.rs

@@ -0,0 +1,52 @@
+// SPDX-License-Identifier: MPL-2.0
+
+//! Provides localization support for this crate.
+
+use i18n_embed::{
+    DefaultLocalizer, LanguageLoader, Localizer,
+    fluent::{FluentLanguageLoader, fluent_language_loader},
+    unic_langid::LanguageIdentifier,
+};
+use rust_embed::RustEmbed;
+use std::sync::LazyLock;
+
+/// Applies the requested language(s) to requested translations from the `fl!()` macro.
+pub fn init(requested_languages: &[LanguageIdentifier]) {
+    if let Err(why) = localizer().select(requested_languages) {
+        eprintln!("error while loading fluent localizations: {why}");
+    }
+}
+
+// Get the `Localizer` to be used for localizing this library.
+#[must_use]
+pub fn localizer() -> Box<dyn Localizer> {
+    Box::from(DefaultLocalizer::new(&*LANGUAGE_LOADER, &Localizations))
+}
+
+#[derive(RustEmbed)]
+#[folder = "i18n/"]
+struct Localizations;
+
+pub static LANGUAGE_LOADER: LazyLock<FluentLanguageLoader> = LazyLock::new(|| {
+    let loader: FluentLanguageLoader = fluent_language_loader!();
+
+    loader
+        .load_fallback_language(&Localizations)
+        .expect("Error while loading fallback language");
+
+    loader
+});
+
+
+/// Request a localized string by ID from the i18n/ directory.
+#[macro_export]
+macro_rules! fl {
+    ($message_id:literal) => {{
+        i18n_embed_fl::fl!($crate::i18n::LANGUAGE_LOADER, $message_id)
+    }};
+
+    ($message_id:literal, $($args:expr),*) => {{
+        i18n_embed_fl::fl!($crate::i18n::LANGUAGE_LOADER, $message_id, $($args), *)
+    }};
+}
+