Swift equivalent to Objective-C FourCharCode single quote literals (e.g. 'TEXT')

Question

I am trying replicate some Objective C cocoa in Swift. All is good until I come across the following:

// Set a new type and creator:
unsigned long type = \'TEXT\         


        

Answer 1

Swift 5 Update:

extension String {
    func osType() -> OSType {
        return OSType(
            data(using: .macOSRoman)?
                .withUnsafeBytes {
                    $0.reduce(into: UInt(0)) { $0 = $0 << 8 + UInt($1) }
                } ?? 0
        )
    }
}