Add parse::url::scheme function for parsing a url protocol/scheme

Closes #1304

lib/src/fnc/mod.rs

@@ -140,6 +140,7 @@ pub fn synchronous(ctx: &Context<'_>, name: &str, args: Vec<Value>) -> Result<Va
 		"parse::url::path" => parse::url::path,
 		"parse::url::port" => parse::url::port,
 		"parse::url::query" => parse::url::query,
+		"parse::url::scheme" => parse::url::scheme,
 		//
 		"rand::bool" => rand::bool,
 		"rand::enum" => rand::r#enum,

lib/src/fnc/parse.rs

@@ -110,4 +110,12 @@ pub mod url {
 			Err(_) => Ok(Value::None),
 		}
 	}
+
+	pub fn scheme((string,): (String,)) -> Result<Value, Error> {
+		// Parse the URL
+		match Url::parse(&string) {
+			Ok(v) => Ok(v.scheme().into()),
+			Err(_) => Ok(Value::None),
+		}
+	}
 }

lib/src/sql/function.rs

@@ -387,6 +387,7 @@ fn function_parse(i: &str) -> IResult<&str, &str> {
 		tag("parse::url::port"),
 		tag("parse::url::path"),
 		tag("parse::url::query"),
+		tag("parse::url::scheme"),
 	))(i)
 }