Encode and decode base64 from String

String+Base64.swift

extension String {

    var base64encoded: String? {
        if let data = self.data(using: .utf8) {
            return data.base64EncodedString(options: Data.Base64EncodingOptions(rawValue: 0))
        }
        return nil
    }

    var base64decoded: String? {
        if let data = Data(base64Encoded: self) {
            return String.init(data: data, encoding: .utf8)
        }
        return nil
    }
}

I'm sure somebody else has already shared a similar (if not the same) way to do this, but it's what I did in a project I'm working on where I needed to encode in base64 without a new line feed or carriage return.

The code was originally in Objective-C, and had a problem where the person who did the encoding, as there's not a Base64EncodingOption of the type none or something of the like, they used the option:

return data.base64EncodedString(options: .lineLength64Characters)

The problem was that this included a '\n\r' to the encoded text when the encoded length was above 64 characters, which our server didn't know how to interpret.

So, taking the opportunity to do a little refactoring, I created this extension in the project.