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use crate::{InputType, InputValueError};
use once_cell::sync::Lazy;
use regex::Regex;
static EMAIL_RE: Lazy<Regex> = Lazy::new(|| {
Regex::new("^(([0-9A-Za-z!#$%&'*+-/=?^_`{|}~&&[^@]]+)|(\"([0-9A-Za-z!#$%&'*+-/=?^_`{|}~ \"(),:;<>@\\[\\\\\\]]+)\"))@").unwrap()
});
pub fn email<T: AsRef<str> + InputType>(value: &T) -> Result<(), InputValueError<T>> {
if EMAIL_RE.is_match(value.as_ref()) {
Ok(())
} else {
Err("invalid email".into())
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_email() {
let test_cases = [
("plainaddress", true),
("@example.com", true),
("Joe Smith <email@example.com>", true),
("email.example.com", true),
("あいうえお@example.com", true),
("email@example.com", false),
("firstname.lastname@example.com", false),
("email@subdomain.example.com", false),
("firstname+lastname@example.com", false),
("email@123.123.123.123", false),
("email@[123.123.123.123]", false),
("1234567890@example.com", false),
("email@example-one.com", false),
("_______@example.com", false),
("email@example.name", false),
("email@example.museum", false),
("email@example.co.jp", false),
("firstname-lastname@example.com", false),
];
for (s, res) in test_cases {
assert_eq!(email(&s.to_string()).is_err(), res);
}
}
}