uhh, attachments are not allowed here?
class Validate {
// characters allowed in e-mail addresses, not including the separators (@
and .)
public static var EMAIL_CHARS: String = "abcdefghijklmnopqrstuvwxyz_-";
// test a string for containing allowed characters only
public static function containsOnly(aStr: String, aChars: String): Boolean {
for (var i = 0; i < aStr.length && aChars.indexOf(aStr.charAt(i)) != -1;
i++);
return i >= aStr.length
}
// validate an e-mail address
public static function email(aEmail: String): Boolean {
var result: Boolean = false;
aEmail = aEmail.toLowerCase();
// split into parts at @ characters
var a: Array = aEmail.split("@");
// only a single @ is allowed
if (result = (a.length == 2)) {
// first take the string after the @ character
var a2: Array = a[1].split(".");
// it should contain at least one dot
if (result = (a2.length >= 2)) {
// iterate through parts separated by dots
for (var i = 0; i < a2.length && result; i++)
// check wheter the current part is not empty (or longer than one
character in the case
// of the last two which denote the TLD and domain name) and contains
valid characters only
result = (a2[i].length > (i >= a2.length - 2 ? 1 : 0) &&
containsOnly(a2[i], EMAIL_CHARS));
}
if (result) {
// take the string before the @ character - it can contain no dots
a2 = a[0].split(".");
// iterate through parts separated by dots
for (var i = 0; i < a2.length && result; i++)
// check wheter the current part is not empty and contains valid
characters only
result = (a2[i].length > 0 && containsOnly(a2[i], EMAIL_CHARS));
}
}
return result;
}
}
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