Created
December 22, 2014 12:15
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Email address validation (swift version)
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import Foundation | |
extension NSString { | |
/** | |
http://stackoverflow.com/questions/800123/what-are-best-practices-for-validating-email-addresses-in-objective-c-for-ios-2 | |
RFC 2822 http://tools.ietf.org/html/rfc2822 | |
*/ | |
func isEmail() -> Bool { | |
let sRegex = "(?:[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])?|\\[(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?|[a-z0-9-]*[a-z0-9]:(?:[\\x01-\\x08\\x0b\\x0c\\x0e-\\x1f\\x21-\\x5a\\x53-\\x7f]|\\\\[\\x01-\\x09\\x0b\\x0c\\x0e-\\x7f])+)\\])" | |
if let b = NSPredicate(format: "SELF MATCHES[c] %@", sRegex)?.evaluateWithObject(self) { | |
return b | |
} | |
return false | |
} | |
} |
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