improve regex

src/json_schema/mod.rs

@@ -913,6 +913,8 @@ mod tests {
                     "username@com",                   // TLD must have at least 2 characters
                     "username@example,com",           // invalid character in domain
                     "[email protected]",          // leading dot in domain
+                    "[email protected]",          // domain cannot start with a hyphen
+                    "[email protected]",          // domain cannot end with a hyphen
                     "[email protected]",          // double dot in domain name
                     "[email protected]",         // multiple errors in domain
                 ]

src/json_schema/types.rs

@@ -35,8 +35,7 @@ pub static DATE: &str = r#""(?:\d{4})-(?:0[1-9]|1[0-2])-(?:0[1-9]|[1-2][0-9]|3[0
 pub static TIME: &str = r#""(2[0-3]|[01][0-9]):([0-5][0-9]):([0-5][0-9])(\\.[0-9]+)?(Z)?""#;
 pub static UUID: &str = r#""[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}""#;
 pub static URI: &str = r#"^(https?|ftp):\/\/([^\s:@]+(:[^\s:@]*)?@)?([a-zA-Z\d.-]+\.[a-zA-Z]{2,}|localhost)(:\d+)?(\/[^\s?#]*)?(\?[^\s#]*)?(#[^\s]*)?$|^urn:[a-zA-Z\d][a-zA-Z\d\-]{0,31}:[^\s]+$"#;
-pub static EMAIL: &str =
-    r"^[A-Za-z0-9]+(?:[._%+-][A-Za-z0-9]+)*@[A-Za-z0-9-]+(?:\.[A-Za-z0-9-]+)*\.[A-Za-z]{2,63}$";
+pub static EMAIL: &str = r#"^(?:[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*|"(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21\x23-\x5b\x5d-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])*")@(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\[(?:(?:(2(5[0-5]|[0-4][0-9])|1[0-9][0-9]|[1-9]?[0-9]))\.){3}(?:(2(5[0-5]|[0-4][0-9])|1[0-9][0-9]|[1-9]?[0-9])|[a-z0-9-]*[a-z0-9]:(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21-\x5a\x53-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])+)\])$"#;
 
 #[derive(Debug, PartialEq)]
 pub enum FormatType {