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use fluent_bundle::{FluentArgs, FluentBundle, FluentResource, FluentValue};
use fluent_syntax::ast;
use unic_langid::{langid, LanguageIdentifier};
const LANG_EN: LanguageIdentifier = langid!("en");
fn add_functions<R>(name: &'static str, bundle: &mut FluentBundle<R>) {
match name {
"preferences" => {
bundle
.add_function("PLATFORM", |_args, _named_args| {
return "linux".into();
})
.expect("Failed to add a function to the bundle.");
}
_ => {}
}
}
fn get_args(name: &str) -> Option<FluentArgs> {
match name {
"preferences" => {
let mut prefs_args = FluentArgs::new();
prefs_args.set("name", FluentValue::from("John"));
prefs_args.set("tabCount", FluentValue::from(5));
prefs_args.set("count", FluentValue::from(3));
prefs_args.set("version", FluentValue::from("65.0"));
prefs_args.set("path", FluentValue::from("/tmp"));
prefs_args.set("num", FluentValue::from(4));
prefs_args.set("email", FluentValue::from("john@doe.com"));
prefs_args.set("value", FluentValue::from(4.5));
prefs_args.set("unit", FluentValue::from("mb"));
prefs_args.set("service-name", FluentValue::from("Mozilla Disk"));
Some(prefs_args)
}
_ => None,
}
}
fn get_ids(res: &FluentResource) -> Vec<String> {
res.entries()
.filter_map(|entry| match entry {
ast::Entry::Message(ast::Message { id, .. }) => Some(id.name.to_owned()),
_ => None,
})
.collect()
}
fn iai_resolve_preferences() {
let files = &[include_str!("preferences.ftl")];
for source in files {
let res = FluentResource::try_new(source.to_string()).expect("failed to parse FTL.");
let ids = get_ids(&res);
let mut bundle = FluentBundle::new(vec![LANG_EN]);
bundle.add_resource(res).expect("Failed to add a resource.");
add_functions("preferences", &mut bundle);
let args = get_args("preferences");
let mut s = String::new();
for id in &ids {
let msg = bundle.get_message(id).expect("Message found");
let mut errors = vec![];
if let Some(value) = msg.value() {
bundle
.write_pattern(&mut s, value, args.as_ref(), &mut errors)
.expect("Failed to write a pattern.");
s.clear();
}
for attr in msg.attributes() {
bundle
.write_pattern(&mut s, attr.value(), args.as_ref(), &mut errors)
.expect("Failed to write a pattern.");
s.clear();
}
assert!(errors.len() == 0, "Resolver errors: {:#?}", errors);
}
}
}
iai::main!(iai_resolve_preferences);