rust-language-tags

Typesafe BCP47 language tag handling.

See also http://www.w3.org/International/articles/language-tags/

To compile with testdata run cargo build --features testdata and cargo test --features testdata. Using real data takes a long time to compile because of enum matching.

Features

• Parsing and formatting tags ☑
• Parts
• Language ☑
• Extlang ☑
• Script ☑
• Region ☑
• Variant ☑
• Extension ☐
• Privateuse ☐
• Comparing tags ☑
• IANA registered tags ☑ (currently using real data takes many minutes to comile)
• Check if tag is valid ☐
• much more... ☐

How to use it

Create tags:

use std::default::Default;
let mut tag: LanguageTag = Default::default();
tag.language = Some(Language::De);
tag.region = Some(Region::De);
println!("{}", tag) // "de-DE", German as spoken in Germany

Parse tags:

// Parse Arabic written in Latin script
let tag: LanguageTag = "ar-Latn".parse().unwrap();
println!("{}", tag.script.unwrap()); // "Latn"