pub struct LanguageIdentifier {
    pub language: Language,
    pub script: Option<Script>,
    pub region: Option<Region>,
    pub(crate) variants: Option<Box<[Variant]>>,
}
Expand description

LanguageIdentifier is a core struct representing a Unicode Language Identifier.

Examples

use unic_langid_impl::LanguageIdentifier;

let li: LanguageIdentifier = "en-US".parse()
    .expect("Failed to parse.");

assert_eq!(li.language, "en");
assert_eq!(li.script, None);
assert_eq!(li.region.as_ref().map(Into::into), Some("US"));
assert_eq!(li.variants().len(), 0);

Parsing

Unicode recognizes three levels of standard conformance for any language identifier:

  • well-formed - syntactically correct
  • valid - well-formed and only uses registered language subtags, extensions, keywords, types…
  • canonical - valid and no deprecated codes or structure.

At the moment parsing normalizes a well-formed language identifier converting _ separators to - and adjusting casing to conform to the Unicode standard.

Any bogus subtags will cause the parsing to fail with an error. No subtag validation is performed.

Examples:

use unic_langid_impl::LanguageIdentifier;

let li: LanguageIdentifier = "eN_latn_Us-Valencia".parse()
    .expect("Failed to parse.");

assert_eq!(li.language, "en");
assert_eq!(li.script.as_ref().map(Into::into), Some("Latn"));
assert_eq!(li.region.as_ref().map(Into::into), Some("US"));
assert_eq!(li.variants().map(|v| v.as_str()).collect::<Vec<_>>(), &["valencia"]);

Fields§

§language: Language§script: Option<Script>§region: Option<Region>§variants: Option<Box<[Variant]>>

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Size: 32 bytes