hugo/RuDS
1
0
Fork 0
Code Issues 1 Pull Requests Actions Packages Projects Releases Wiki Activity

Replace hand-rolled i18n with Fluent.

Browse Source
This commit is contained in:
Chili Palmer
2026-07-18 14:34:40 +02:00
parent 16a210c0ad
commit 2e35afc731
24 changed files with 2338 additions and 2187 deletions
Download Patch File Download Diff File Expand all files Collapse all files

219
crates/bds-core/src/i18n/mod.rs
View File

@@ -1,3 +1,5 @@
use fluent_bundle::concurrent::FluentBundle;
use fluent_bundle::{FluentArgs, FluentResource};
use std::collections::HashMap;
use std::sync::LazyLock;
@@ -74,83 +76,127 @@ pub fn detect_os_locale() -> UiLocale {
}
}
type Catalog = HashMap<String, String>;
type Bundle = FluentBundle<FluentResource>;
fn parse_catalog(json: &str) -> Catalog {
serde_json::from_str(json).unwrap_or_default()
const UI_EN: &str = include_str!("../../../../locales/ui/en.ftl");
const RENDER_EN: &str = include_str!("../../../../locales/render/en.ftl");
fn resource(source: &str) -> FluentResource {
FluentResource::try_new(source.to_owned())
.unwrap_or_else(|(_, errors)| panic!("invalid Fluent catalog: {errors:?}"))
}
static CATALOG_EN: LazyLock<Catalog> =
LazyLock::new(|| parse_catalog(include_str!("../../../../locales/ui/en.json")));
static CATALOG_DE: LazyLock<Catalog> =
LazyLock::new(|| parse_catalog(include_str!("../../../../locales/ui/de.json")));
static CATALOG_FR: LazyLock<Catalog> =
LazyLock::new(|| parse_catalog(include_str!("../../../../locales/ui/fr.json")));
static CATALOG_IT: LazyLock<Catalog> =
LazyLock::new(|| parse_catalog(include_str!("../../../../locales/ui/it.json")));
static CATALOG_ES: LazyLock<Catalog> =
LazyLock::new(|| parse_catalog(include_str!("../../../../locales/ui/es.json")));
// ── Render catalogs (content/template locale, independent of UI locale) ──
static RENDER_EN: LazyLock<Catalog> =
LazyLock::new(|| parse_catalog(include_str!("../../../../locales/render/en.json")));
static RENDER_DE: LazyLock<Catalog> =
LazyLock::new(|| parse_catalog(include_str!("../../../../locales/render/de.json")));
static RENDER_FR: LazyLock<Catalog> =
LazyLock::new(|| parse_catalog(include_str!("../../../../locales/render/fr.json")));
static RENDER_IT: LazyLock<Catalog> =
LazyLock::new(|| parse_catalog(include_str!("../../../../locales/render/it.json")));
static RENDER_ES: LazyLock<Catalog> =
LazyLock::new(|| parse_catalog(include_str!("../../../../locales/render/es.json")));
fn render_catalog_for(code: &str) -> &'static Catalog {
let base = code.split(['-', '_']).next().unwrap_or("en").to_lowercase();
match base.as_str() {
"de" => &RENDER_DE,
"fr" => &RENDER_FR,
"it" => &RENDER_IT,
"es" => &RENDER_ES,
_ => &RENDER_EN,
fn bundle(locale: UiLocale, english: &str, localized: &str) -> Bundle {
let mut bundle = FluentBundle::new_concurrent(vec![
locale.code().parse().expect("supported locale is valid"),
]);
bundle.set_use_isolating(false);
bundle
.add_resource(resource(english))
.expect("English Fluent catalog has unique keys");
if locale != UiLocale::En {
bundle.add_resource_overriding(resource(localized));
}
bundle
}
fn catalog_for(locale: UiLocale) -> &'static Catalog {
static UI_CATALOGS: LazyLock<[Bundle; 5]> = LazyLock::new(|| {
[
bundle(UiLocale::En, UI_EN, UI_EN),
bundle(
UiLocale::De,
UI_EN,
include_str!("../../../../locales/ui/de.ftl"),
),
bundle(
UiLocale::Fr,
UI_EN,
include_str!("../../../../locales/ui/fr.ftl"),
),
bundle(
UiLocale::It,
UI_EN,
include_str!("../../../../locales/ui/it.ftl"),
),
bundle(
UiLocale::Es,
UI_EN,
include_str!("../../../../locales/ui/es.ftl"),
),
]
});
static RENDER_CATALOGS: LazyLock<[Bundle; 5]> = LazyLock::new(|| {
[
bundle(UiLocale::En, RENDER_EN, RENDER_EN),
bundle(
UiLocale::De,
RENDER_EN,
include_str!("../../../../locales/render/de.ftl"),
),
bundle(
UiLocale::Fr,
RENDER_EN,
include_str!("../../../../locales/render/fr.ftl"),
),
bundle(
UiLocale::It,
RENDER_EN,
include_str!("../../../../locales/render/it.ftl"),
),
bundle(
UiLocale::Es,
RENDER_EN,
include_str!("../../../../locales/render/es.ftl"),
),
]
});
fn locale_index(locale: UiLocale) -> usize {
match locale {
UiLocale::En => &CATALOG_EN,
UiLocale::De => &CATALOG_DE,
UiLocale::Fr => &CATALOG_FR,
UiLocale::It => &CATALOG_IT,
UiLocale::Es => &CATALOG_ES,
UiLocale::En => 0,
UiLocale::De => 1,
UiLocale::Fr => 2,
UiLocale::It => 3,
UiLocale::Es => 4,
}
}
fn format(bundle: &Bundle, key: &str, params: &[(&str, &str)]) -> Option<String> {
let id = key.replace('.', "-");
let pattern = bundle.get_message(&id)?.value()?;
let mut args = FluentArgs::new();
for (name, value) in params {
args.set(*name, *value);
}
let mut errors = Vec::new();
let value = bundle
.format_pattern(pattern, Some(&args), &mut errors)
.into_owned();
Some(value)
}
fn ui_catalog_for(locale: UiLocale) -> &'static Bundle {
&UI_CATALOGS[locale_index(locale)]
}
fn render_catalog_for(language: &str) -> &'static Bundle {
&RENDER_CATALOGS[locale_index(normalize_language(language))]
}
/// Look up a translation key for the given locale.
///
/// Fallback chain: requested locale → English → key itself.
/// This implements the MenuTranslations invariant from i18n.allium.
pub fn translate(locale: UiLocale, key: &str) -> String {
if let Some(val) = catalog_for(locale).get(key) {
return val.clone();
}
if locale != UiLocale::En
&& let Some(val) = CATALOG_EN.get(key)
{
return val.clone();
}
key.to_string()
format(ui_catalog_for(locale), key, &[]).unwrap_or_else(|| key.to_owned())
}
/// Look up a translation key and substitute `{param}` placeholders.
///
/// Parameters are provided as `&[("param_name", "value")]`.
pub fn translate_with(locale: UiLocale, key: &str, params: &[(&str, &str)]) -> String {
let mut result = translate(locale, key);
for (name, value) in params {
let placeholder = format!("{{{name}}}");
result = result.replace(&placeholder, value);
}
result
format(ui_catalog_for(locale), key, params).unwrap_or_else(|| key.to_owned())
}
/// Look up a render/template translation key by content language code.
@@ -159,25 +205,64 @@ pub fn translate_with(locale: UiLocale, key: &str, params: &[(&str, &str)]) -> S
/// Fallback chain: requested language → English → key itself.
/// Implements the RenderTranslations invariant from i18n.allium.
pub fn translate_render(language: &str, key: &str) -> String {
let catalog = render_catalog_for(language);
if let Some(val) = catalog.get(key) {
return val.clone();
}
if !language.starts_with("en")
&& let Some(val) = RENDER_EN.get(key)
{
return val.clone();
}
key.to_string()
format(render_catalog_for(language), key, &[]).unwrap_or_else(|| key.to_owned())
}
/// Return the entire render translation map for a language.
///
/// Used to inject as `translations` into the Liquid template context.
pub fn get_render_translations(language: &str) -> &'static HashMap<String, String> {
render_catalog_for(language)
&RENDER_MAPS[locale_index(normalize_language(language))]
}
const RENDER_KEYS: &[&str] = &[
"render.archive",
"render.pagination.label",
"render.pagination.newer",
"render.pagination.older",
"render.notFound.message",
"render.notFound.back",
"render.photoArchive.empty",
"render.gallery.empty",
"render.tagCloud.empty",
"render.tagCloud.ariaLabel",
"render.calendar.open",
"render.calendar.close",
"render.calendar.title",
"render.calendar.loading",
"render.calendar.error",
"render.taxonomy.ariaLabel",
"render.backlinks.label",
"render.backlinks.ariaLabel",
"render.languageSwitcher.ariaLabel",
"render.video.youtubeTitle",
"render.video.vimeoTitle",
"render.month.1",
"render.month.2",
"render.month.3",
"render.month.4",
"render.month.5",
"render.month.6",
"render.month.7",
"render.month.8",
"render.month.9",
"render.month.10",
"render.month.11",
"render.month.12",
"render.search.placeholder",
"render.search.ariaLabel",
];
static RENDER_MAPS: LazyLock<[HashMap<String, String>; 5]> = LazyLock::new(|| {
std::array::from_fn(|index| {
let locale = UiLocale::all()[index];
RENDER_KEYS
.iter()
.map(|key| ((*key).to_owned(), translate_render(locale.code(), key)))
.collect()
})
});
#[cfg(test)]
mod tests {
use super::*;