Contents.swift

//: Playground - noun: a place where people can play

import Foundation
import Darwin

let regex = UnsafeMutablePointer<regex_t>.alloc(1)
let regexString = "^[[:alnum:]]+$"
let regex_str = regexString.cStringUsingEncoding(NSUTF8StringEncoding)!

if (regcomp(regex, regex_str, REG_ICASE | REG_EXTENDED) != 0) {
    print("Error compile regex")
    exit(255)
}
let str = "11asdfas22".cStringUsingEncoding(NSUTF8StringEncoding)!
let errorcode = regexec(regex, str, 0, nil, 0)

if (errorcode == 0) {
    print("matches found.")
}
else if (errorcode == REG_NOMATCH) {
    print("No matches.")
}
else { // REG_ESPACE
    print("Out of memory!")
    exit(255)
}