Model: IPAddressRange: Converting to and from String

Signed-off-by: Roopesh Chander <roop@roopc.net>
This commit is contained in:
Roopesh Chander 2018-10-19 09:15:37 +05:30
parent 921b81e89b
commit 8ec73025f2
1 changed files with 31 additions and 0 deletions

View File

@ -15,6 +15,37 @@ struct IPAddressRange {
var networkPrefixLength: UInt8
}
// MARK: Converting to and from String
// For use in the UI
extension IPAddressRange {
init?(from string: String) {
guard let indexOfSlash = string.lastIndex(of: "/") else { return nil }
let indexOfNetworkPrefixLength = string.index(after: indexOfSlash)
guard (indexOfNetworkPrefixLength < string.endIndex) else { return nil }
let addressString = String(string[string.startIndex ..< indexOfSlash])
if let addr = IPv4Address(addressString) {
address = addr
} else if let addr = IPv6Address(addressString) {
address = addr
} else {
return nil
}
let networkPrefixLengthSubstring = string[indexOfNetworkPrefixLength ..< string.endIndex]
if let npl = UInt8(networkPrefixLengthSubstring) {
networkPrefixLength = npl
} else {
return nil
}
}
func stringRepresentation() -> String {
return "\(address)/\(networkPrefixLength)"
}
}
// MARK: Codable
// For serializing to disk
@available(OSX 10.14, iOS 12.0, *)
extension IPAddressRange: Codable {
public func encode(to encoder: Encoder) throws {