Function doh::util::percent_decode

pub fn percent_decode(s: &str) -> Option<Cow<str>>

Decode a percent-encoded string (like a part of a URL).

Example

assert_eq!(percent_decode("%D0%B0%D1%81%D0%B4%D1%84%20fdsa"), Some(Cow::from("асдф fdsa")));
assert_eq!(percent_decode("%D0%D1%81%D0%B4%D1%84%20fdsa"), None);