Function parse_language_id 

pub fn parse_language_id(
    lang_id: &str,
) -> Result<UnicodeLanguageIdentifier, ParserError>

Parse the given string as an Unicode Language Identifier.

This function parses according to unicode_language_id EBNF defined in UTS #35.

Examples

use unicode_locale_parser::parse_language_id;

let res = parse_language_id("en-US").unwrap();
assert_eq!("en", res.language);
assert_eq!(None, res.script);
assert_eq!(Some("US".to_string()), res.region);
assert_eq!(None, res.variants);

Errors

This function returns an error in the following cases:

• ParserError::Missing if the given language id is empty.
• ParserError::InvalidLanguage if the given language id is not a valid language identifier.
• ParserError::InvalidSubtag if the given language id is not a valid subtag.