How to extract valid email from larger string in Scala

Question

My scala version 2.7.7

Im trying to extract an email adress from a larger string. the string itself follows no format. the code i've got:

import scala.util.matching.Regex
import scala.util.matching._
val Reg = """\b[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}\b""".r
"yo my name is joe : joe@gmail.com" match {
    case Reg(e) => println("match: " + e)
    case _ => println("fail")
}

the Regex passes in RegExBuilder but does not pass for scala. Also if there is another way to do this without regex that would be fine also. Thanks!

Answer 1

As Alan Moore pointed out, you need to add the (?i) to the beginning of the pattern to make it case-insensitive. Also note that using the Regex directly matches the whole string. If you want to find one within a larger string, you can call findFirstIn() or use one of the similar methods of Regex.

val reg = """(?i)\b[A-Z0-9._%+-]+@[A-Z0-9.-]+\.[A-Z]{2,4}\b""".r
reg findFirstIn "yo my name is joe : joe@gmail.com"  match {
    case Some(email) => println("match: " + email)
    case None => println("fail")
}